FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Bambal, AS Gardner, T Kugler, EL Dadyburjora, DB AF Bambal, Ashish S. Gardner, Todd Kugler, Edwin L. Dadyburjora, Dady B. TI Influence of a chelating agent on activity of SiO2-supported cobalt catalyst in Fischer-Tropsch synthesis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 W Virginia Univ, Morgantown, WV 26506 USA. Natl Energy Technol Lab, Morgantown, WV USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 14-PETR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304156 ER PT J AU Beavers, CM AF Beavers, Christine M. TI Chemical crystallography at the Advanced Light Source: Synchrotron light illuminates exciting science SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Beavers, Christine M.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 205-ANYL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300304 ER PT J AU Beckham, GT Matthews, JF Himmel, ME Adney, WS Crowley, MF AF Beckham, Gregg T. Matthews, James F. Himmel, Michael E. Adney, William S. Crowley, Michael F. TI Understanding the molecular-level basis for cellulose recalcitrance with atomistic simulation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA. Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA. RI crowley, michael/A-4852-2013 OI crowley, michael/0000-0001-5163-9398 NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 245-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301016 ER PT J AU Bergman, RG AF Bergman, Robert G. TI Selective stoichiometric and catalytic reactions in water-soluble host-guest supramolecular systems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bergman, Robert G.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Bergman, Robert G.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 537-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303217 ER PT J AU Berryman, JS AF Berryman, Jill S. TI Spectroscopy of (257)Rf SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Berryman, Jill S.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 28-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303621 ER PT J AU Bickmore, BR Rosso, KM AF Bickmore, Barry R. Rosso, Kevin M. TI Gibbsite surface structure and reactivity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brigham Young Univ, Dept Geol Sci, Provo, UT 84602 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 60-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302691 ER PT J AU Bigi, JP Chang, CJ AF Bigi, Julian P. Chang, Christopher J. TI Earth-abundant metal complexes supported by water-compatible polypyridyl ligands for catalytic production of hydrogen from water SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UC Berkeley, Lawrence Berkeley Natl Lab, Dept Chem, Berkeley, CA USA. UC Berkeley, Lawrence Berkeley Natl Lab, Howard Hughes Med Inst, Berkeley, CA USA. UC Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1117-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302818 ER PT J AU Biswas, A Brooks, SC Miller, CL Drake, MM Yin, XPL AF Biswas, Abir Brooks, Scott C. Miller, Carrie L. Drake, Meghan M. Yin, Xiangping L. TI Effects of natural organic matter on methylmercury production by pure cultures of Desulfovibrio desulfuricans ND-132 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN USA. RI Drake, Meghan/A-6446-2011; Brooks, Scott/B-9439-2012 OI Drake, Meghan/0000-0001-7969-4823; Brooks, Scott/0000-0002-8437-9788 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 197-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302257 ER PT J AU Boltalina, OV Shustova, NB Kuvychko, IV Strauss, SH Popov, AA Chen, YS Mackey, MM Coumbe, CE Phillips, JP Stevenson, S AF Boltalina, Olga V. Shustova, Natalia B. Kuvychko, Igor V. Strauss, Steven H. Popov, Alexey A. Chen, Yu Sheng Mackey, Mary M. Coumbe, Curtis E. Phillips, J. Paige Stevenson, Steven TI Effect of metal cluster on perfluoroalkylation of metallic nitride fullerenes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Moscow MV Lomonosov State Univ, Dept Chem, Moscow, Russia. Univ So Mississippi, Dept Chem, Hattiesburg, MS 39406 USA. ChemMetCARS Beam Line Adv Photon Source, Argonne, IL USA. RI Popov, Alexey/A-9937-2011 OI Popov, Alexey/0000-0002-7596-0378 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 4-FLUO PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302475 ER PT J AU Bomble, YJ Crowley, MF Nimlos, MR Himmel, ME AF Bomble, Yannick J. Crowley, Michael F. Nimlos, Mark R. Himmel, Michael E. TI Understanding the cellulosome and its assembly: Toward improving consolidated bioprocessing SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA. Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA. RI crowley, michael/A-4852-2013 OI crowley, michael/0000-0001-5163-9398 NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 492-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300634 ER PT J AU Bond, EM Moody, WA Vieira, DJ Slemmons, AK AF Bond, Evelyn M. Moody, W. Allen Vieira, David J. Slemmons, Alice K. TI Separation of americium and curium for nuclear chemistry experiments SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, C NR, Los Alamos, NM USA. Los Alamos Natl Lab, C AAC, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 88-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303641 ER PT J AU Brown, D Park, J Verma, R Tomar, N Jayasinghe, R Colon-Mercado, H Elvington, M Hobbs, D Sharif, I DesMarteau, D Creager, S Smith, DW AF Brown, Dakarai Park, Jiyoung Verma, Rajneesh Tomar, Neetu Jayasinghe, Rahula Colon-Mercado, Hector Elvington, Mark Hobbs, David Sharif, Iqbal DesMarteau, Darryl Creager, Stephen Smith, Dennis W., Jr. TI Phase separation of TFVE base block copolymers and their applications SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Clemson Univ, Dept Chem, Clemson, SC 29634 USA. Tetramer Technol, Pendleton, SC USA. Savannah River Natl Lab, Aiken, SC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 283-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304745 ER PT J AU Bryant, JL AF Bryant, Janet L. TI Maximizing productivity in an unbalanced world: Effects of corporate policy and personal style on the bottom line SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Bryant, Janet L.] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 32-SCHB PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304886 ER PT J AU Buenermann, O Kornilov, O Gessner, O Leone, SR Neumark, DM AF Buenermann, Oliver Kornilov, Oleg Gessner, Oliver Leone, Stephen R. Neumark, Daniel M. TI Femtosecond time-resolved EUV photoion imaging studies of pure helium nanodroplets SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 200-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304239 ER PT J AU Burkhard, GF Cates, NC Gysel, R Beiley, Z Hoke, ET Scully, SR Miller, CE Toney, MF Heeney, M McCullough, I McGehee, MD AF Burkhard, George F. Cates, Nichole C. Gysel, Roman Beiley, Zachary Hoke, Eric T. Scully, Shawn R. Miller, Chad E. Toney, Michael F. Heeney, Martin McCullough, Iain McGehee, Michael D. TI Effects of bulk heterojunction nanostructure on solar cell performance SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. Stanford Synchrotron Radiat Lab, Menlo Pk, CA USA. Univ London, Dept Mat, London, England. Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 296-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304560 ER PT J AU Butt, JN Hartshorne, RS Gates, AJ Clarke, TA Mills, PC Richardson, DJ Shi, L Beliaev, AS Marshall, MJ Reardon, CL Fredrickson, JK Zachara, JM Tien, M Ross, D Nuester, J Brantley, S AF Butt, Julea N. Hartshorne, Robert S. Gates, Andrew J. Clarke, Thomas A. Mills, Paul C. Richardson, David J. Shi, Liang Beliaev, Alex S. Marshall, Matthew J. Reardon, Catherine L. Fredrickson, Jim K. Zachara, John M. Tien, Ming Ross, Daniel Nuester, Jochen Brantley, Susan TI Characterization of a trans-outermembrane icosaheme complex for electron exchange between bacteria and their environment SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ E Anglia, Sch Chem Sci, Norwich NR4 7TJ, Norfolk, England. Univ E Anglia, Sch Biol Sci, Norwich NR4 7TJ, Norfolk, England. Pacific NW Natl Lab, Richland, WA 99352 USA. Penn State Univ, Dept Biochem & Mol Biol, University Pk, PA 16802 USA. Penn State Univ, Dept Geosci, University Pk, PA 16802 USA. RI clarke, tom/D-1837-2009; Butt, Julea/E-2133-2011 OI clarke, tom/0000-0002-6234-1914; Butt, Julea/0000-0002-9624-5226 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 193-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302254 ER PT J AU Cadigan, CA Richards, RM Yung, M Magrini, K AF Cadigan, Christopher A. Richards, Ryan M. Yung, Matthew Magrini, Kim TI Catalyst engineering for thermochemical biomass conversions to fuels SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado Sch Mines, Golden, CO 80401 USA. Natl Renewable Energy Lab, Golden, CO USA. RI Richards, Ryan/B-3513-2008 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 182-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300784 ER PT J AU Calderon, CP AF Calderon, Christopher P. TI Characterizing nanoscale dynamics: Pathwise approaches that avoid excessive coarse-graining SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Calderon, Christopher P.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 69-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304445 ER PT J AU Campbell, K Bertoia, J Martin, L Mincher, B Paviet-Hartmann, P AF Campbell, Keri Bertoia, Julie Martin, Leigh Mincher, Bruce Paviet-Hartmann, Patricia TI Radiolysis of TALSPEAK solvents: Identification of degradation products SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA. Idaho Natl Lab, Dept Aqueous Separat & Radiochem, Idaho Falls, ID 83415 USA. Univ Nevada, Harry Reid Ctr, Las Vegas, NV 89154 USA. RI Mincher, Bruce/C-7758-2017 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 131-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303586 ER PT J AU Cao, Y Dong, HT Li, JL Nimlos, M Qian, XH AF Cao, Yu Dong, Haitao Li, Ji-lai Nimlos, Mark Qian, Xianghong TI Mechanism and energetics of glucose conversion to hydromethylfurfural SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Mech Engn, Ft Collins, CO 80523 USA. Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 358-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302591 ER PT J AU Celina, MC Giron, NH Trujillo, AB Aubert, JH AF Celina, Mathew C. Giron, Nicholas H. Trujillo, Ana B. Aubert, James H. TI New generation of high temperature foams based on cyanate esters with intrinsic high char formation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Celina, Mathew C.; Giron, Nicholas H.; Trujillo, Ana B.; Aubert, James H.] Sandia Natl Labs, Organ Mat Dept 1821, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 521-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304830 ER PT J AU Cetinkol, OP Dibble, DC Gang, C Kent, MS Knierim, B Auer, M Wemmer, DE Pelton, JG Melnichenko, YB Ralph, J Simmons, BA Holmes, BM AF Cetinkol, Ozgul Persil Dibble, Dean C. Gang, Cheng Kent, Michael S. Knierim, Bernhard Auer, Manfred Wemmer, David E. Pelton, Jeffrey G. Melnichenko, Yuri B. Ralph, John Simmons, Blake A. Holmes, Bradley M. TI Harnessing the effect of ionic liquid pretreatment on Eucalyptus SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Joint BioEnergy Inst, Deconstruct Div, Emeryville, CA USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Sandia Natl Labs, Livermore, CA USA. Joint BioEnergy Inst, Div Technol, Emeryville, CA USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Inst Quantitat Biosci, Berkeley, CA 94720 USA. Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN USA. DOE Great Lakes BioEnergy Res Ctr, Madison, WI USA. Univ Wisconsin, Dept Biochem, Madison, WI 53705 USA. Univ Wisconsin, Dept Biol Syst Engn, Madison, WI 53705 USA. NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 330-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301055 ER PT J AU Chan, EM Mao, AW Xu, CX Owen, JS Milliron, DJ AF Chan, Emory M. Mao, Alvin W. Xu, Chenxu Owen, Jonathan S. Milliron, Delia J. TI High-throughput optimization and characterization of colloidal nanocrystals in an automated synthesis robot SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 79-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303323 ER PT J AU Chappaz, A Dhenain, A Druschel, G Fitts, JP Kim, CS Lyons, TW AF Chappaz, Anthony Dhenain, Aurelie Druschel, Greg Fitts, Jeffrey P. Kim, Christopher S. Lyons, Timothy W. TI New insights in Mo(VI) speciation in sulfidic waters: Importance of natural organic matter SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA. Univ Vermont, Dept Geol, Burlington, VT USA. Brookhaven Natl Lab, Dept Environm Sci, Upton, NY 11973 USA. Chapman Univ, Dept Chem, Orange, CA USA. RI Fitts, Jeffrey/J-3633-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 238-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302276 ER PT J AU Click, D AF Click, Damon TI Particle size analysis of sludge waste to support sludge preparation for the Defense Waste Processing Facility SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Click, Damon] Savannah River Natl Lab, Savannah, GA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 176-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303607 ER PT J AU Closser, KD Head-Gordon, M AF Closser, Kristina D. Head-Gordon, Martin TI Ab initio investigations of the excited states of small helium clusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 368-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304310 ER PT J AU Cohen, BW Polyansky, D Zong, RF Achord, P Cabelli, D Muckerman, JT Thummel, RP Fujita, E AF Cohen, Brian W. Polyansky, Dmitry Zong, Ruifa Achord, Patrick Cabelli, Diane Muckerman, James T. Thummel, Randolph P. Fujita, Etsuko TI Reactivity of a photochemically and radiolytically produced regenerable inorganic hydride donor SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Univ Houston, Dept Chem, Houston, TX USA. RI Muckerman, James/D-8752-2013; Fujita, Etsuko/D-8814-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 35-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300817 ER PT J AU Copping, R Jeon, B Teat, S Janousch, M Tyliszczak, T Gronbech-Jensen, N Canning, A Butorin, S Kvashnina, K Nordgren, J Shuh, DK AF Copping, Roy Jeon, Byyoungseon Teat, Simon Janousch, Markus Tyliszczak, Tolek Gronbech-Jensen, Niels Canning, Andrew Butorin, Sergei Kvashnina, Kristina Nordgren, Joseph Shuh, David K. TI Soft X-ray spectroscopy to elucidate the role of 5f electrons in actinide complexes and materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Actinide Chem Grp,Glenn T Seaborg Ctr, Berkeley, CA 94720 USA. Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source Div, Berkeley, CA 94720 USA. Paul Scherrer Inst, Lab Synchrotron Radiat, Villigen, Switzerland. Uppsala Univ, Dept Phys, Uppsala, Sweden. RI Janousch, Markus/B-3285-2010; Kvashnina, Kristina/O-2374-2016 OI Kvashnina, Kristina/0000-0003-4447-4542 NR 0 TC 0 Z9 0 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 164-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303600 ER PT J AU Cordaro, JV AF Cordaro, Joseph V. TI High resolution mass spectrometer electronics upgrade SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cordaro, Joseph V.] Savannah River Natl Lab, Dept Robot, Aiken, SC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 160-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303598 ER PT J AU Cordeiro, PJ Tilley, TD AF Cordeiro, Paul J. Tilley, T. Don TI Influence of surface functionalization on catalytic titanium and tantalum species supported on mesoporous SBA15. SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1035-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302786 ER PT J AU Crowley, MF Beckham, GT Bu, LT Nimlos, MR Adney, WS Himmel, ME AF Crowley, Michael F. Beckham, Gregg T. Bu, Lintao Nimlos, Mark R. Adney, William S. Himmel, Michael E. TI Understanding cellobiohydrolase processivity: Computational study of underlying mechanisms SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Crowley, Michael F.; Beckham, Gregg T.; Bu, Lintao; Nimlos, Mark R.; Adney, William S.; Himmel, Michael E.] Natl Renewable Energy Lab, Chem & Biosci Ctr, Golden, CO USA. RI crowley, michael/A-4852-2013 OI crowley, michael/0000-0001-5163-9398 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 241-AGFD PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300065 ER PT J AU Curtiss, LA Greeley, J Redfern, P Zapol, P Vajda, S Zygmunt, S AF Curtiss, Larry A. Greeley, Jeffrey Redfern, Paul Zapol, Peter Vajda, Stefan Zygmunt, Stanislaus TI Density functional studies of subnanometer clusters: The role of size and support on their catalytic activity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. Valparaiso Univ, Dept Phys, Valparaiso, IN 46383 USA. RI Zapol, Peter/G-1810-2012 OI Zapol, Peter/0000-0003-0570-9169 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 23-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300809 ER PT J AU Custelcean, R Bock, A Bosano, J Remy, P Bonnesen, PV Hay, BP Moyer, BA AF Custelcean, Radu Bock, Aurelien Bosano, Jerome Remy, Priscilla Bonnesen, Peter V. Hay, Benjamin P. Moyer, Bruce A. TI Self-assembled cage receptors for anion recognition and separation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Custelcean, Radu; Bock, Aurelien; Bosano, Jerome; Remy, Priscilla; Bonnesen, Peter V.; Hay, Benjamin P.; Moyer, Bruce A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. RI Moyer, Bruce/L-2744-2016 OI Moyer, Bruce/0000-0001-7484-6277 NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1003-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302774 ER PT J AU Cygan, RT AF Cygan, Randall T. TI Advances in the molecular simulation of natural zeolites SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cygan, Randall T.] Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 70-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302695 ER PT J AU Cygan, RT AF Cygan, Randall T. TI Large-scale molecular simulations of the clay-water interface SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Cygan, Randall T.] Sandia Natl Labs, Dept Geochem, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 106-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302633 ER PT J AU Dadmun, M Henry, N Yin, W Xiao, K AF Dadmun, Mark Henry, Nathan Yin, Wen Xiao, Kai TI PCBM:P3HT miscibility and interfacial structure as determined by neutron scattering SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 238-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304536 ER PT J AU Darling, SB Botiz, I Martinson, AB Tepavcevic, S Sibener, SJ Rajh, T Dimitrijevic, N AF Darling, Seth B. Botiz, Ioan Martinson, Alex B. Tepavcevic, Sanja Sibener, Steven J. Rajh, Tijana Dimitrijevic, Nada TI Rational design of nanostructured hybrid materials for photovoltaics SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Univ Chicago, James Franck Inst, Dept Chem, Chicago, IL 60637 USA. Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. RI Botiz, Ioan/I-3209-2012 OI Botiz, Ioan/0000-0002-8555-1084 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 185-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304510 ER PT J AU Davis, JA Waychunas, GA AF Davis, James A. Waychunas, Glenn A. TI Past, present, and future of surface complexation modeling SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. US Geol Survey, Menlo Pk, CA 94025 USA. RI Davis, James/G-2788-2015 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 8-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302697 ER PT J AU Delmau, LH Hay, BP Masselin, C Sloop, FV Gorden, AEV AF Delmau, Laetitia H. Hay, Benjamin P. Masselin, Charles Sloop, Frederick V., Jr. Gorden, Anne E. V. TI New ligands for trivalent actinides/lanthanides separation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. Auburn Univ, Dept Chem, Auburn, AL 36849 USA. RI Gorden, Anne/D-2477-2011; Sloop, Jr., Frederick/J-2301-2016 OI Gorden, Anne/0000-0001-6623-9880; Sloop, Jr., Frederick/0000-0001-6473-9507 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 81-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303637 ER PT J AU DePaolo, D AF DePaolo, Donald TI Geochemical enhancement of geologic carbon sequestration SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [DePaolo, Donald] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302630 ER PT J AU Dietrich, JA Shis, D Keasling, JD AF Dietrich, Jeffrey A. Shis, David Keasling, Jay D. TI Design and characterization of a butanol responsive, transcription factor-based biosensor SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Joint BioEnergy Inst, Fuels Synth Div, Emeryville, CA USA. Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. RI Keasling, Jay/J-9162-2012 OI Keasling, Jay/0000-0003-4170-6088 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 44-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300616 ER PT J AU Dukovic, G Peng, P Saykally, R Alivisatos, P AF Dukovic, Gordana Peng, Paul Saykally, Richard Alivisatos, Paul TI Efficient charge transfer in metal-semiconductor nanoheterostructures SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1355-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303048 ER PT J AU Duncan, NC Custelcean, R Hay, B AF Duncan, Nathan C. Custelcean, Radu Hay, Benjamin TI Design, synthesis, and evaluation of self-assembled organic polyhedra and frameworks SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Duncan, Nathan C.; Custelcean, Radu; Hay, Benjamin] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 757-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304054 ER PT J AU Dunlevy, MW Gelis, A Brown, MA Lumetta, G Vandegrift, GF AF Dunlevy, Michael W. Gelis, Artem Brown, M. Alex Lumetta, Gregg Vandegrift, George F. TI Separation and speciation of actinides, lanthanides, and transition metals using a single process for solvent extraction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, CSE Div, Argonne, IL 60439 USA. Oregon State Univ, Dept NE RHP, Corvallis, OR 97331 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 118-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303575 ER PT J AU Edwards, JV Goheen, S Bopp, A Prevost, N Condon, B Costable, C AF Edwards, J. Vincent Goheen, Steve Bopp, Alvin Prevost, Nicolette Condon, Brian Costable, Carmen TI Immobilization of lysozyme on cotton fabrics; Synthesis, characterization, and activity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 So Reg Res Ctr, Dept Cotton Chem Utilizat, New Orleans, LA USA. Batelle Pacific NW Div, Dept Phys, Richland, WA USA. Batelle Pacific NW Div, Div Chem Sci, Richland, WA USA. So Univ New Orleans, Dept Nat Sci, New Orleans, LA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 35-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301057 ER PT J AU Engtrakul, C Blackburn, JL Bult, JB O'Neill, KJ Barker, JG Rocha, JDR Gennett, T Simpson, LJ AF Engtrakul, Chaiwat Blackburn, Jeffrey L. Bult, Justin B. O'Neill, Kevin J. Barker, Jacob G. Rocha, John-David R. Gennett, Thomas Simpson, Lin J. TI Stabilization of lithium atoms on supported BCx materials for novel hydrogen sorption materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Engtrakul, Chaiwat; Blackburn, Jeffrey L.; Bult, Justin B.; O'Neill, Kevin J.; Barker, Jacob G.; Rocha, John-David R.; Gennett, Thomas; Simpson, Lin J.] Natl Renewable Energy Lab, Golden, CO USA. RI Blackburn, Jeffrey/D-7344-2012; Rocha, John-David/A-3186-2013 OI Rocha, John-David/0000-0001-6394-4349 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 248-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302549 ER PT J AU Escude, NC Larson, BW Rance, WL Wells, MJ Whitaker, JB Bailey, TS Boltalina, OV Chen, EY Kopidakis, N Strauss, SH AF Escude, Nicole C. Larson, Bryon W. Rance, William L. Wells, Michael J. Whitaker, James B. Bailey, Travis S. Boltalina, Olga V. Chen, Eugene Y. Kopidakis, Nikos Strauss, Steven H. TI Redox-tunable perfluoroalkylfullerene-based polymers with highly variable donor/acceptor domain morphologies for opv active layers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Natl Renewable Energy Lab, Ctr Basic Sci, Golden, CO USA. Colorado State Univ, Dept Chem & Biol Engn, Ft Collins, CO 80523 USA. RI Kopidakis, Nikos/N-4777-2015 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 101-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302479 ER PT J AU Fendorf, S Masue-Slowey, Y Seyfferth, AL Kocar, BD Nico, PS AF Fendorf, Scott Masue-Slowey, Yoko Seyfferth, Angelia L. Kocar, Benjamin D. Nico, Peter S. TI Deciphering processes controlling the transport and plant uptake of arsenic in soils and sediments SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Earth Syst Sci Dept, Stanford, CA 94305 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. RI Nico, Peter/F-6997-2010 OI Nico, Peter/0000-0002-4180-9397 NR 0 TC 0 Z9 0 U1 2 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 196-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302675 ER PT J AU Fonnesbeck, JE Berg, JF Bakhtiar, SN AF Fonnesbeck, Jacqueline E. Berg, Jeffrey F. Bakhtiar, Steven N. TI Advanced gas reactor iodine separation method development SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Fonnesbeck, Jacqueline E.; Berg, Jeffrey F.; Bakhtiar, Steven N.] Idaho Natl Lab, Dept Nucl Mat Characterizat, Idaho Falls, ID 83415 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 135-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303589 ER PT J AU Fujita, E Muckerman, JT AF Fujita, Etsuko Muckerman, James T. TI Redox catalysis for solar fuel generation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RI Muckerman, James/D-8752-2013; Fujita, Etsuko/D-8814-2013 NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 268-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302553 ER PT J AU Gardner, T Kugler, E Hissam, J Campos, A Spivey, J Roy, A Abdelsayed, V Johnson, JB AF Gardner, Todd Kugler, Edwin Hissam, Jason Campos, Andrew Spivey, James Roy, Amitava Abdelsayed, Victor Johnson, J. Bennett TI Catalytic dry reforming of CH4 over Ni-substituted hexaaluminate catalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Natl Energy Technol Lab, Morgantown, WV USA. W Virginia Univ, Dept Chem Engn, Morgantown, WV 26506 USA. Louisiana State Univ, Cain Dept Chem Engn, Baton Rouge, LA 70803 USA. Louisiana State Univ, Ctr Adv Microstruct & Devices, Baton Rouge, LA 70803 USA. Parsons RDS LLC, Morgantown, WV USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 26-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300810 ER PT J AU Gelis, A Gerald, R Vandegrift, G Lumetta, G AF Gelis, Artem Gerald, Rex Vandegrift, George Lumetta, Gregg TI Actinide and lanthanide separation in TALSPEAK and in combined TRUEX-TALSPEAK processes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 48-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303628 ER PT J AU George, A Benke, PI Tran, K Simmons, BA Holmes, BM AF George, Anthe Benke, Peter I. Kim Tran Simmons, Blake A. Holmes, Bradley M. TI Influence of the ionic liquid cation on the dissolution of isolated lignins and biomass for biofuel production SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [George, Anthe; Benke, Peter I.; Kim Tran; Simmons, Blake A.; Holmes, Bradley M.] Joint BioEnergy Inst, Deconstruct Div, Emeryville, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 332-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301056 ER PT J AU Grafe, M Landers, M Tappero, RV Klauber, C Gan, B Hutomo, G Austin, P Davies, I Morrell, S AF Grafe, Markus Landers, Matthew Tappero, Ryan V. Klauber, Craig Gan, Bee Hutomo, Grace Austin, Peter Davies, Ian Morrell, Sophia TI Metal speciation and distribution in bauxite residues SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 CSIRO, Div Proc Sci & Engn, Waterford, WA, Australia. CSIRO, LightMetals Flagship, Waterford, WA, Australia. Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 1 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 49-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302688 ER PT J AU Greeley, JP Torres-Rangel, D AF Greeley, Jeffrey P. Torres-Rangel, Daniel TI Electronic and structural effects on subnanometer metal catalysis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Greeley, Jeffrey P.; Torres-Rangel, Daniel] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 277-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302556 ER PT J AU Grills, DC Doherty, MD Fujita, E AF Grills, David C. Doherty, Mark D. Fujita, Etsuko TI New catalysts for the photochemical reduction of CO2 in supercritical CO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Grills, David C.; Doherty, Mark D.; Fujita, Etsuko] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. RI Fujita, Etsuko/D-8814-2013; Grills, David/F-7196-2016 OI Grills, David/0000-0001-8349-9158 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 88-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302624 ER PT J AU Hagaman, EW Jiao, J Ma, Z Yin, HF Dai, S AF Hagaman, Edward W. Jiao, Jian Ma, Zhen Yin, Hongfeng Dai, Sheng TI Nature of the aluminum phases in aluminum oxide-coated titanium oxide particles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hagaman, Edward W.; Jiao, Jian; Ma, Zhen; Yin, Hongfeng; Dai, Sheng] Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Dai, Sheng/K-8411-2015 OI Dai, Sheng/0000-0002-8046-3931 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 121-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302490 ER PT J AU Hakala, JA Keating, E Gardiner, J Capo, R Stewart, B Newell, D AF Hakala, J. Alexandra Keating, Elizabeth Gardiner, James Capo, Rosemary Stewart, Brian Newell, Dennis TI Influence of local redox conditions on element mobility in CO2-rich groundwater aquifers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Geosci Div, Pittsburgh, PA USA. Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. Univ Pittsburgh, Dept Geol & Planetary Sci, Pittsburgh, PA 15260 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 52-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302689 ER PT J AU Han, G Wu, SW Chan, E Milliron, D Talapin, D Cohen, B Schuck, J AF Han, Gang Wu, Shiwei Chan, Emory Milliron, Delia Talapin, Dmitri Cohen, Bruce Schuck, Jim TI Single lanthanide-doped upconversion nanocrystals as bioimaging probes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Chicago, Dept Chem, Chicago, IL 60637 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1153-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302840 ER PT J AU Hay, BP Custelcean, R Duncan, NC AF Hay, Benjamin P. Custelcean, Radu Duncan, Nathan C. TI De novo structure-based design of high symmetry assemblies SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Hay, Benjamin P.; Custelcean, Radu; Duncan, Nathan C.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 663-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303271 ER PT J AU Head-Gordon, M AF Head-Gordon, Martin TI Unraveling the nature of intermolecular interactions from electronic structure calculations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Head-Gordon, Martin] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 126-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302083 ER PT J AU Henderson, MA AF Henderson, Michael A. TI Selectivity in photochemical reactions on rutile TiO2(110) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Henderson, Michael A.] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 63-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300828 ER PT J AU Horvath, A Masanet, E McKone, T Lobscheid, A Mishra, U Fingerman, K Lipman, T Auffhammer, M AF Horvath, Arpad Masanet, Eric McKone, Thomas Lobscheid, Agnes Mishra, Umakant Fingerman, Kevin Lipman, Tim Auffhammer, Maximilian TI Large-scale advanced biofuel implementation: A case study of Illinois and Indiana SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Energy Biosci Inst, Berkeley, CA 94720 USA. Univ Calif Berkeley, Energy & Resources Grp, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Agr & Resource Econ, Berkeley, CA 94720 USA. RI Masanet, Eric /I-5649-2012 NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 146-AGRO PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300126 ER PT J AU Huang, WY Tsung, CK Kuhn, JN Somorjai, GA AF Huang, Wenyu Tsung, Chia-Kuang Kuhn, John N. Somorjai, Gabor A. TI Selectivity of bimetallic rhodium platinum nanoparticles on cyclohexene hydrogenation and dehydrogenation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Univ S Florida, Dept Chem & Biomed Engn, Tampa, FL USA. NR 0 TC 0 Z9 0 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 913-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303369 ER PT J AU Huber, HJ Herman, DT AF Huber, Heinz J. Herman, David T. TI Actual waste testing with a single disk SpinTek rotary microfilter SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Washington River Protect Solut, Richland, WA USA. Savannah River Natl Lab, Aiken, SC USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 174-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303606 ER PT J AU Jain, A Shaw, W Linehan, JC Dubois, DL AF Jain, Avijita Shaw, Wendy Linehan, John C. Dubois, Daniel L. TI Bio-Inspired electrocatalysts for hydrogen production SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Jain, Avijita; Shaw, Wendy; Linehan, John C.; Dubois, Daniel L.] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 492-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303192 ER PT J AU Jensen, HM Malley, K Ajo-Franklin, C AF Jensen, Heather M. Malley, Kostia Ajo-Franklin, Caroline TI Electrifying E. coli: Splicing electron transfer pathways SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 43-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300609 ER PT J AU Jiang, P Porsgaard, S Borondics, F Kober, M Caballero, A Bluhm, H Besenbacher, F Salmeron, M AF Jiang, Peng Porsgaard, Soeren Borondics, Ferenc Kober, Mariana Caballero, Alfonso Bluhm, Hendrik Besenbacher, Flemming Salmeron, Miquel TI Activation of O-2 by gold nanoparticles? In situ ambient-pressure X-ray photoelectron spectroscopy study SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, Aarhus, Denmark. RI Borondics, Ferenc/A-7616-2008 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 111-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300748 ER PT J AU Johnson, DK Adney, WS Brunecky, R Ding, SY Donohoe, BS Mittal, A Park, S Vinzant, TB Himmel, ME AF Johnson, David K. Adney, William S. Brunecky, Roman Ding, Shi-You Donohoe, Bryon S. Mittal, Ashutosh Park, Sunkyu Vinzant, Todd B. Himmel, Michael E. TI Improved digestibility in dilute acid pretreated corn stover SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Johnson, David K.; Adney, William S.; Brunecky, Roman; Ding, Shi-You; Donohoe, Bryon S.; Mittal, Ashutosh; Park, Sunkyu; Vinzant, Todd B.; Himmel, Michael E.] Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA. RI Ding, Shi-You/O-1209-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 317-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301047 ER PT J AU Johnson, MJA Macnaughtan, ML Caskey, SR Kampf, JW AF Johnson, Marc J. A. Macnaughtan, Marisa L. Caskey, Stephen R. Kampf, Jeff W. TI Adventures with fluorinated ligands in multiple-bond metathesis reactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA. Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 16-FLUO PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302460 ER PT J AU Kadossov, EB Justin, J Lu, M Rosenmann, D Ocola, L Cabrini, S Burghaus, U AF Kadossov, Evgueni B. Justin, John Lu, Ming Rosenmann, Daniel Ocola, Leonidas Cabrini, Stefano Burghaus, Uwe TI Adsorption dynamics of CO on silica-supported Au nanoclusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 N Dakota State Univ, Dept Chem & Mol Biol, Fargo, ND 58105 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 137-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301831 ER PT J AU Katz, JE Gilbert, B Zhang, XY Attenkofer, K Falcone, RW Waychunas, GA AF Katz, Jordan E. Gilbert, Benjamin Zhang, Xiaoyi Attenkofer, Klaus Falcone, Roger W. Waychunas, Glenn A. TI Ultrafast time-resolved X-ray absorption measurements of the reductive dissolution of iron oxide nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. Argonne Natl Lab, Div X Ray Sci, Argonne, IL 60439 USA. RI Katz, Jordan/J-5599-2016; Gilbert, Benjamin/E-3182-2010 OI Katz, Jordan/0000-0002-6242-2124; NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 145-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302649 ER PT J AU Kaya, S Kendelewicz, T Mbuga, F Newberg, JT Bluhm, H Brown, GE Nilsson, A AF Kaya, Sarp Kendelewicz, Tom Mbuga, Felix Newberg, John Todd Bluhm, Hendrik Brown, Gordon E. Nilsson, Anders TI In-situ characterization of arsenic on iron oxide surfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SSRL SLAC Nat Accel Lab, Menlo Pk, CA USA. Stanford Univ, Dept Geol Environ Sci, Stanford, CA 94305 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 42-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302051 ER PT J AU Kiplinger, JL AF Kiplinger, Jaqueline L. TI New developments in actinide organometallic chemistry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kiplinger, Jaqueline L.] Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 19-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303615 ER PT J AU Klaehn, JR Orme, CJ Luther, TA Peterson, ES Urban-Klaehn, JM AF Klaehn, John R. Orme, Christopher J. Luther, Thomas A. Peterson, Eric S. Urban-Klaehn, Jagoda M. TI High temperature gas separations using high performance polymers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Lab, Idaho Falls, ID 83415 USA. Idaho Accelerator Ctr, Pocatello, ID USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 79-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302617 ER PT J AU Klein-Marcuschamer, D Simmons, B Blanch, H AF Klein-Marcuschamer, Daniel Simmons, Blake Blanch, Harvey TI Techno-economic analysis of lignocellulosic ethanol production based on experimental data SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Joint Bioenergy Inst, Emeryville, CA USA. Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Sandia Natl Labs, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 286-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300551 ER PT J AU Knight, DA Zidan, R Fewox, C Lascola, R Motyka, T Mohtadi, R Sivasubramanian, P AF Knight, Douglas A. Zidan, Ragaiy Fewox, Chris Lascola, Robert Motyka, Ted Mohtadi, Rana Sivasubramanian, PremKumar TI Adduct-stabilized aluminum borohydride as advanced hydrogen storage materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Savannah River Natl Lab, Hydrogen Technol Res Lab, Aiken, SC USA. Toyota Res Inst N Amer, Mat Res Dept, Ann Arbor, MI USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 678-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303278 ER PT J AU Koh, CJ Kwak, K Kostko, O Chambreau, SD Vaghjiani, GL Leone, SR AF Koh, Christine J. Kwak, Kyungwon Kostko, Oleg Chambreau, Steven D. Vaghjiani, Ghanshyam L. Leone, Stephen R. TI Ultrafast photodissociation dynamics of an imidazolium based ionic liquid SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. USAF, Res Lab Edwards, Air Force Base Edwards, CA USA. RI Kostko, Oleg/B-3822-2009 OI Kostko, Oleg/0000-0003-2068-4991 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 588-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304398 ER PT J AU Kondratyuk, P Miller, JB Morreale, BD Shukla, S Gellman, AJ AF Kondratyuk, Petro Miller, James B. Morreale, Bryan D. Shukla, Shantanu Gellman, Andrew J. TI Spatially resolved measurements of catalytic activity with a microfluidic reactor array SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Energy Technol Lab, Pittsburgh, PA USA. Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 81-PETR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304183 ER PT J AU Kornilov, O Buenermann, O Wang, C Lin, MF Gessner, O Leone, S Neumark, D AF Kornilov, Oleg Buenermann, Oliver Wang, Chia Lin, Ming Fu Gessner, Oliver Leone, Stephen Neumark, Daniel TI Femtosecond excited state dynamics of pure helium droplets: Probing competition between autoionization and electornic relaxation pathways by time-resolved photoelectron spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. UC Berkeley, Dept Chem, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 340-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304300 ER PT J AU Krishnamurthy, J Kerr, JB AF Krishnamurthy, Jailakshmi Kerr, John B. TI Imidazole tethered styrene backbone polymers as anhydrous proton conducting membranes for high temperature PEM fuel cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Krishnamurthy, Jailakshmi; Kerr, John B.] EETD Lawrence Berkeley Natl Labs, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 454-PMSE PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304626 ER PT J AU Kukkadapu, R AF Kukkadapu, Ravi TI Nature and reactivity of various Fe(II) species in aquifers contaminated with radionuclides SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Kukkadapu, Ravi] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 703-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303295 ER PT J AU Kwon, MJ Antonopoulos, D Boyanov, M Brulc, J Long, P Mishra, B Skinner, K Williams, K Kemner, K O'Loughlin, E AF Kwon, Man Jae Antonopoulos, Dionysios Boyanov, Maxim Brulc, Jennifer Long, Philip Mishra, Bhoopesh Skinner, Kelly Williams, Kenneth Kemner, Kenneth O'Loughlin, Edward TI Electron donor effects on the biological reduction of iron oxides under sulfate-rich conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Biosci Div, Lemont, IL USA. Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Williams, Kenneth/O-5181-2014; Long, Philip/F-5728-2013 OI Williams, Kenneth/0000-0002-3568-1155; Long, Philip/0000-0003-4152-5682 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 202-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302677 ER PT J AU Lai, B AF Lai, Barry TI Bacterial biogeochemistry revealed by submicron XRF microprobe SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lai, Barry] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 22-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302679 ER PT J AU Lee, HY Issa, JB Isied, SS Castner, EW Wishart, JF AF Lee, Heather Y. Issa, Joseph B. Isied, Stephan S. Castner, Edward W., Jr. Wishart, James F. TI Electron-transfer dynamics in ionic liquids vs. neutral solvents SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 730-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304470 ER PT J AU Lee, IY AF Lee, I-Yang TI Sessions and organizers final.xls status and science opportunities of the gamma-ray tracking detector array GRETINA SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lee, I-Yang] LBNL, Div Nucl Sci, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 14-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303592 ER PT J AU Lee, TS Chan, R Kim, SW Keasling, JD AF Lee, Taek Soon Chan, Rossana Kim, Seon Won Keasling, Jay D. TI Metabolic engineering of mevalonate pathway SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Joint BioEnergy Inst, Fuels Synth Div, Emeryville, CA USA. Gyeongsang Natl Univ, Div Appl Life Sci, Jinju, South Korea. RI Keasling, Jay/J-9162-2012 OI Keasling, Jay/0000-0003-4170-6088 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 236-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300535 ER PT J AU Lee, TS Krupa, R Hajimorad, M Prasad, N Lee, SK Keasling, JD AF Lee, Taek Soon Krupa, Rachel Hajimorad, Meghdad Prasad, Nilu Lee, Sung Kuk Keasling, Jay D. TI Biobrick vectors and datasheets: A synthetic biology platform for metabolic engineering SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lee, Taek Soon; Krupa, Rachel; Hajimorad, Meghdad; Prasad, Nilu; Lee, Sung Kuk; Keasling, Jay D.] Joint BioEnergy Inst, Fuels Synth Div, Emeryville, CA USA. RI Keasling, Jay/J-9162-2012 OI Keasling, Jay/0000-0003-4170-6088 NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 219-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300523 ER PT J AU Lee, YJ AF Lee, Young Jin TI Mass spectrometric characterization of biorenewables SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lee, Young Jin] Iowa State Univ, Dept Chem, Ames, IA USA. [Lee, Young Jin] US DOE, Ames Lab, Ames, IA 50011 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 200-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300795 ER PT J AU Levitskaia, TG Billing, JM Bryan, SA Casella, AJ Jonsen, AM Lines, AM Lines, AM Peterson, JM Thomas, EM AF Levitskaia, Tatiana G. Billing, Justin M. Bryan, Samuel A. Casella, Amanda J. Jonsen, Amanda M. Lines, Amanda M. Lines, Amanda M. Peterson, James M. Thomas, Elisabeth M. TI On-line monitoring of spent fuel reprocessing streams SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Levitskaia, Tatiana G.; Billing, Justin M.; Bryan, Samuel A.; Casella, Amanda J.; Jonsen, Amanda M.; Lines, Amanda M.; Lines, Amanda M.; Peterson, James M.; Thomas, Elisabeth M.] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 154-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303596 ER PT J AU Levitskaia, TG Bryan, SA Casella, AJ Peterson, JM AF Levitskaia, Tatiana G. Bryan, Samuel A. Casella, Amanda J. Peterson, James M. TI Neptunium redox speciation in aqueous-TBP/dodecane separation system SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Levitskaia, Tatiana G.; Bryan, Samuel A.; Casella, Amanda J.; Peterson, James M.] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 136-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303590 ER PT J AU Levitskaia, TG Casella, AJ Peterson, JM AF Levitskaia, Tatiana G. Casella, Amanda J. Peterson, James M. TI Chitosan for separation and capture of CO2 from flue gas SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Levitskaia, Tatiana G.; Casella, Amanda J.; Peterson, James M.] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 365-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302595 ER PT J AU Li, Y Robinette, ML Sumpter, BG Abboud, KA Castellano, RK AF Li, Yan Robinette, Michelle L. Sumpter, Bobby G. Abboud, Khalil A. Castellano, Ronald K. TI Benzotrifuranones: Synthesis, structures, and access to polycyclic heteroaromatics SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Florida, Dept Chem, Gainesville, FL 32611 USA. Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA. Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. RI Castellano, Ronald/C-5082-2012; Sumpter, Bobby/C-9459-2013 OI Sumpter, Bobby/0000-0001-6341-0355 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 269-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303773 ER PT J AU Liang, S Wang, YA Veser, G AF Liang, Shuang Wang, Yanan Veser, Goetz TI Nanostructuring mixed Ce/La oxides for water-gas-shift catalysis SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA USA. Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA. RI Veser, Goetz/I-5727-2013 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1283-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303024 ER PT J AU Lin, MF AF Lin, Min-Fu TI Ultrafast phenomena in C-6 F-6: Dynamics along a conical intersection probed by transient X-ray absorption spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Lin, Min-Fu] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Lin, Min-Fu] Lawrence Berkeley Natl Lab, Div Chem Sci, Berekeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 617-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304413 ER PT J AU Lin, Y Drozd, V Chen, JH Daemen, LL Mao, HK Mao, WL AF Lin, Yu Drozd, Vadym Chen, Jiuhua Daemen, Luke L. Mao, Ho-kwang Mao, Wendy L. TI Ammonia borane and a new ammonia borane-hydrogen compound at high pressure SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA. Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA. Florida Int Univ, Miami, FL 33199 USA. Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM USA. SLAC Natl Accelerator Lab, Menlo Pk, CA USA. RI Lujan Center, LANL/G-4896-2012; Drozd, Vadym/B-2518-2009; Mao, Hokwang/K-8013-2013 NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 221-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302535 ER PT J AU Liu, CL Smith, JD Che, DL Ahmed, M Leone, SR Wilson, KR AF Liu, Chen-Lin Smith, Jared D. Che, Dung L. Ahmed, Musahid Leone, Stephen R. Wilson, Kevin R. TI Heterogeneous reaction of squalane particles initiated by Cl atoms: The direct observation of secondary chemistry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 532-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304380 ER PT J AU Liu, LV Chow, MS Bell, CB Wong, SD Zhao, JY Solomon, EI AF Liu, Lei V. Chow, Marina S. Bell, Caleb B., III Wong, Shaun D. Zhao, Jiyong Solomon, Edward I. TI Spectroscopic and DFT studies of activated bleomycin and its reactivity SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Chem, Stanford, CA 94305 USA. Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RI Liu, Lei/H-4942-2011 NR 0 TC 0 Z9 0 U1 2 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 757-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303311 ER PT J AU Liu, Y Klivansky, LM Koshkakaryan, G Cao, D AF Liu, Yi Klivansky, Liana M. Koshkakaryan, Gayane Cao, Dennis TI Selective formation of desymmetrized [2]catenanes by dynamic clipping SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Liu, Yi; Klivansky, Liana M.; Koshkakaryan, Gayane; Cao, Dennis] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 498-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303851 ER PT J AU Luna, J Zajickova, Z AF Luna, Joao Zajickova, Zuzana TI Separation of alkylbenzenes by monolithic silica capillary column modified with pentafluoropropyl methacrylate via single step photografting SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Barry Univ Miami, Dept Phys Sci, Shores, FL USA. Mol Foundry Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 310-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301464 ER PT J AU Maier, S Stass, I Feng, XF Salmeron, M AF Maier, Sabine Stass, Ingeborg Feng, Xiaofeng Salmeron, Miquel TI Dehydrogenation of single ammonia molecules on ruthenium SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 216-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301863 ER PT J AU Maiti, A AF Maiti, Amitesh TI In silico screening of ionic liquids for carbon capture and stable energetic materials SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Maiti, Amitesh] Lawrence Livermore Natl Lab, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 269-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304268 ER PT J AU Mante, M Campbell, BD Smith, ME Knauss, KG Higgins, SR AF Mante, Michael Campbell, Brittany D. Smith, Michael E. Knauss, Kevin G. Higgins, Steven R. TI Near equilibrium dissolution of calcite using a flow-through reactor: Implications for long-term modeling of mineral dissolution in geologic formations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Wright State Univ, Dept Chem, Dayton, OH 45435 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. RI knauss, kevin/K-2827-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 156-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302656 ER PT J AU Marsh, D Mirzadeh, S Schweitzer, G AF Marsh, Daniel Mirzadeh, Saed Schweitzer, George TI Calculation of ionic parameters for Ac-225 from electrodeposition data using the Nernst-Brunner Equation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Oak Ridge, TN USA. Bechtel Jacobs Co LLC, Oak Ridge, TN USA. Univ Tennessee, Knoxville, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 125-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303581 ER PT J AU Marshall, CL Mader, EA Setthapun, W Miller, JT AF Marshall, Christopher L. Mader, Elizabeth A. Setthapun, Worajit Miller, Jeffrey T. TI In situ characterization of catalysts using synchrotron radiation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Marshall, Christopher L.; Mader, Elizabeth A.; Setthapun, Worajit; Miller, Jeffrey T.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 174-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300778 ER PT J AU Martin, AN Love, AH Alcaraz, A AF Martin, Audrey N. Love, Adam H. Alcaraz, Armando TI Sampling and analysis of chemical attribution signatures of forensic value SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Forens Sci Ctr, Livermore, CA USA. Johnson Wright Inc, Lafayette, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 161-ANYL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300279 ER PT J AU Martin, RL AF Martin, Richard L. TI On the localization/delocalization dilemma in the electronic structure of f-element oxides SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Martin, Richard L.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 119-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303576 ER PT J AU Matteson, BS Paulenova, A Precek, M Tkac, P AF Matteson, Brent S. Paulenova, Alena Precek, Martin Tkac, Peter TI Reduction and complexation chemistry of acetohydroxamic acid with actinides and other metals under acidic conditions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA. Oregon State Univ, Ctr Radiat, Corvallis, OR 97331 USA. Argonne Natl Lab, Argonne, IL 60439 USA. RI Precek, Martin/G-5648-2014 OI Precek, Martin/0000-0002-5790-5543 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 137-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303591 ER PT J AU Matthews, JF Bergenstrahle, M Wohlert, J Brady, JW Himmel, ME Crowley, MF AF Matthews, James F. Bergenstrahle, Malin Wohlert, Jakob Brady, John W. Himmel, Michael E. Crowley, Michael F. TI Simulations of cellulose microfibrils with several molecular mechanics force fields SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Golden, CO USA. Cornell Univ, Dept Food Sci, Ithaca, NY 14853 USA. RI crowley, michael/A-4852-2013 OI crowley, michael/0000-0001-5163-9398 NR 0 TC 0 Z9 0 U1 0 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 176-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300873 ER PT J AU Mayes, R Ma, Z Dai, S AF Mayes, Richard Ma, Zhen Dai, Sheng TI Carbon-supported catalysts: Phosphorylated mesoporous carbon SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Mayes, Richard; Ma, Zhen; Dai, Sheng] Oak Ridge Natl Lab, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 912-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303368 ER PT J AU McClendon, CL Friedland, G Jacobson, MP AF McClendon, Christopher L. Friedland, Gregory Jacobson, Matthew P. TI Quantifying correlations between allosteric sites in thermodynamic ensembles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif San Francisco, Grad Grp Biophys, San Francisco, CA 94143 USA. Univ Calif San Francisco, Dept Pharmaceut Chem, San Francisco, CA USA. Sandia Natl Labs, Joint Bioenergy Inst, Emeryville, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 285-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302143 ER PT J AU Mezger, M Schroder, H Schramm, S Reichert, H Deutsch, M Ocko, BM Honkimaki, V Dosch, H AF Mezger, Markus Schroeder, Heiko Schramm, Sebastian Reichert, Harald Deutsch, Moshe Ocko, Benjamin M. Honkimaeki, Veijo Dosch, Helmut TI What determines the interfacial structure of room temperature ionic liquids at a solid wall? SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Max Planck Inst fA R Met Forsch, Stuttgart, Germany. European Synchrotron Radiat Facil, F-38043 Grenoble, France. Bar Ilan Univ, Dept Phys, Ramat Gan, Israel. Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA. NR 2 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 172-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304224 ER PT J AU Michel, FM Barron, V Torrent, J Morales, MP Serna, JC Boily, JF Liu, QS Ambrosini, A Cismasu, CA Brown, GE AF Michel, F. Marc Barron, Vidal Torrent, Jose Morales, Maria P. Serna, Jose C. Boily, Jean-Francois Liu, Qingsong Ambrosini, Andrea Cismasu, Cristina A. Brown, Gordon E., Jr. TI Ferrimagnetic form of ferrihydrite reveals links between structure, composition and magnetism SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA. SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lab, Menlo Pk, CA USA. Univ Cordoba, Dept Ciencias & Recursos AgrA Colas & Forest, Cordoba, Spain. Umea Univ, Dept Chem, Umea, Sweden. Inst Ciencia Mat, E-28006 Madrid, Spain. Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China. Sandia Natl Labs, Albuquerque, NM USA. RI Barron, Vidal/G-4483-2013; Torrent, Jose/K-5293-2014 OI Barron, Vidal/0000-0003-1484-1655; Torrent, Jose/0000-0001-7725-105X NR 0 TC 0 Z9 0 U1 1 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 146-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302650 ER PT J AU Miller, JT Guo, N Williams, WD Fingland, BR Kispersky, VF Bollmann, L Delgass, WN Ribeiro, FH Meyer, RJ AF Miller, Jeffrey T. Guo, Neng Williams, W. Damion Fingland, Bradley R. Kispersky, Vincent F. Bollmann, Luis Delgass, W. Nicholas Ribeiro, Fabio H. Meyer, Randall J. TI Influence of adsorbates on the EXAFS and XANES spectra during water-gas shift reaction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Argonne, IL 60439 USA. Purdue Univ, Dept Chem Engn, W Lafayette, IN 47907 USA. Univ Illinois, Dept Chem Engn, Chicago, IL 60680 USA. RI Guo, Neng/A-3223-2013 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 20-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300794 ER PT J AU Moore, K Forsberg, B Arnold, B Baer, D Penn, L AF Moore, Kirsten Forsberg, Brady Arnold, Bill Baer, Don Penn, Lee TI Impact of iron salt anion identity on the reactivity of synthesized iron nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Minnesota, Minneapolis, MN 55455 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 153-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302234 ER PT J AU Morss, LR AF Morss, Lester R. TI Actinide halides in perspective SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Morss, Lester R.] US DOE, Off Basic Energy Sci, Washington, DC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 78-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303635 ER PT J AU Murdachaew, G Mundy, CJ Schenter, GK AF Murdachaew, Garold Mundy, Christopher J. Schenter, Gregory K. TI Improving the DFT description of liquid water by the SCP-DFT method SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Murdachaew, Garold; Mundy, Christopher J.; Schenter, Gregory K.] Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. RI Schenter, Gregory/I-7655-2014 OI Schenter, Gregory/0000-0001-5444-5484 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 386-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304320 ER PT J AU Murph, SEH Fox, EB Serkiz, SM Colon-Mercado, H AF Murph, Simona E. Hunyadi Fox, Elise B. Serkiz, Steve M. Colon-Mercado, Hector TI Self-assembly of shape selective Nano-Catalyst impregnated membranes: Toward direct methanol fuel cells (DMFC) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl & Homeland Secur Savannah River Natl Lab, Aiken, SC USA. Savannah River Natl Lab, Aiken, SC USA. RI Fox, Elise/G-5438-2013 OI Fox, Elise/0000-0002-4527-5820 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 571-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303235 ER PT J AU Najera, M Solunke, RD Gardner, T Veser, G AF Najera, Michelle Solunke, Rahul D. Gardner, Todd Veser, Goetz TI Catalytic CO2 reduction via chemical looping dry reforming SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA. Univ Pittsburgh, Mascaro Ctr Sustainable Innovat, Pittsburgh, PA 15261 USA. US DOE, Natl Technol Lab, Pittsburgh, PA USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 12-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300753 ER PT J AU Nam, KT Shelby, SA Marciel, AB Choi, PH Chen, R Chu, TK Mesch, RA Lee, BC Connolly, MD Kisielowski, C Zuckermann, RN AF Nam, Ki Tae Shelby, Sarah A. Marciel, Amanda B. Choi, Philip H. Chen, Ritchie Chu, Tammy K. Mesch, Ryan A. Lee, Byoung-Chul Connolly, Michael D. Kisielowski, Christian Zuckermann, Ronald N. TI Water-soluble crystalline nanosheets from peptoid polymers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Biol Nanostruct Facil, Mol Foundry, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 560-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303881 ER PT J AU Narula, CK Chen, XQ Stocks, MG AF Narula, Chaitanya K. Chen, Xingqiu Stocks, Malcolm G. TI First-principles studies of the structure and bonding of metal atoms supported on q-alumina SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Oak Ridge Natl Lab, Phys Chem Mat MSTD, Oak Ridge, TN USA. Oak Ridge Natl Lab, Mat Theory MSTD, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1302-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303032 ER PT J AU Negru, B Park, D Neumark, DM AF Negru, Bogdan Park, Dayoung Neumark, Daniel M. TI Photodissociation dynamics of the tert-butyl radical via photofragment translational spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 392-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304324 ER PT J AU Nelson, AGD Bray, TH Albrecht-Schmitt, TE AF Nelson, Anna-Gay D. Bray, Travis H. Albrecht-Schmitt, Thomas E. TI Periodic trends in actinide phosphonates: Divergence and convergence bewteen uranium and transuranium systems SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Notre Dame, Dept Civil Engn & Geol Sci, Notre Dame, IN 46556 USA. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Univ Notre Dame, Dept Chem & Biochem, Notre Dame, IN 46556 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 109-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303570 ER PT J AU Newhouse, R Stavila, V Hwang, S Zhang, J AF Newhouse, Rebecca Stavila, Vitalie Hwang, Sonjong Zhang, Jin TI Catalyzed magnesium borohydride: Hydrogen desorption and rehydrogenation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA 95064 USA. Sandia Natl Labs, Livermore, CA USA. CALTECH, Pasadena, CA 91125 USA. RI Stavila, Vitalie/B-6464-2008 OI Stavila, Vitalie/0000-0003-0981-0432 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 433-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304339 ER PT J AU O'Loughlin, E Gorski, C Kemner, K Boyanov, M Cook, R Scherer, M AF O'Loughlin, Edward Gorski, Chris Kemner, Ken Boyanov, Maxim Cook, Russ Scherer, Michelle TI Effects of phosphate doping on the bioreduction of iron oxide SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. Univ Iowa, Dept Civil & Environm Engn, Iowa City, IA 52242 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 191-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302252 ER PT J AU O'Neill, H Cardoso, MB Chathoth, SM Mamontov, E Baker, GA Urban, VS AF O'Neill, Hugh Cardoso, Mateus B. Chathoth, Suresh Mavila Mamontov, Eugene Baker, Gary A. Urban, Volker S. TI Neutron characterization of a sol-gel drug delivery system SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [O'Neill, Hugh; Cardoso, Mateus B.; Chathoth, Suresh Mavila; Mamontov, Eugene; Baker, Gary A.; Urban, Volker S.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RI Mavila Chathoth, Suresh/E-7560-2010; Cardoso, Mateus/A-7926-2015; Urban, Volker/N-5361-2015; Mamontov, Eugene/Q-1003-2015 OI Mavila Chathoth, Suresh/0000-0002-4120-6959; Cardoso, Mateus/0000-0003-2102-1225; Urban, Volker/0000-0002-7962-3408; Mamontov, Eugene/0000-0002-5684-2675 NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 46-MEDI PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303519 ER PT J AU Odom, SA Abouimrane, A Long, BR Esser-Kahn, AP Prokup, A Kryger, MJ Gewirth, AA Amine, K Moore, JS AF Odom, Susan A. Abouimrane, Ali Long, Brandon R. Esser-Kahn, Aaron P. Prokup, Alex Kryger, Matthew J. Gewirth, Andrew A. Amine, Khalil Moore, Jeffrey S. TI Redox shuttles and encapsulated additives for overcharge protection of lithium ion batteries SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Illinois, Dept Chem, Urbana, IL USA. Univ Illinois, Beckman Inst, Urbana, IL USA. Argonne Natl Lab, Ctr Elect Energy Storage, Argonne, IL 60439 USA. RI Amine, Khalil/K-9344-2013 NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 541-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303869 ER PT J AU Ozcubukcu, S Mandal, K Wegner, S Jensen, MP Kent, S He, CA AF Oezcubukcu, Salih Mandal, Kalyaneswar Wegner, Seraphine Jensen, Mark P. Kent, Stephen He, Chuan TI Peptides for actinide separation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Chicago, Dept Chem, Chicago, IL 60637 USA. Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 742-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303305 ER PT J AU Parilla, PA O'Neill, K Knott, R Gennett, T Blackburn, JL Engtrakul, C Bult, J Simpson, LJ AF Parilla, Philip A. O'Neill, Kevin Knott, Richard Gennett, Thomas Blackburn, Jeffery L. Engtrakul, Chaiwat Bult, Justin Simpson, Lin J. TI Measuring hydrogen adsorption on high surface area samples: Avoiding calibration errors SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Parilla, Philip A.; O'Neill, Kevin; Knott, Richard; Gennett, Thomas; Blackburn, Jeffery L.; Engtrakul, Chaiwat; Bult, Justin; Simpson, Lin J.] Natl Renewable Energy Lab, Golden, CO USA. RI Blackburn, Jeffrey/D-7344-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 334-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302579 ER PT J AU Park, D Negru, B Neumark, DM AF Park, Dayoung Negru, Bogdan Neumark, Daniel M. TI Photofragment translational spectroscopy of 2-methylpropene at 193 nm SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1294-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301204 ER PT J AU Park, J Zheng, HM Jun, YW Alivisatos, AP AF Park, Jungwon Zheng, Haimei Jun, Young-wook Alivisatos, A. Paul TI Hetero-epitaxial anion exchange yields single-crystalline hollow nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Park, Jungwon/O-1153-2016 OI Park, Jungwon/0000-0003-2927-4331 NR 0 TC 0 Z9 0 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 321-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303132 ER PT J AU Park, S Johnson, DK Davis, MF AF Park, Sunkyu Johnson, David K. Davis, Mark F. TI Cellulose crystallinity index measured by solid state C-13 nuclear magnetic resonance and X-ray diffraction SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 N Carolina State Univ, Dept Wood & Paper Sci, Raleigh, NC 27695 USA. Natl Renewable Energy Lab, Biosci Ctr, Golden, CO USA. Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 104-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300848 ER PT J AU Park, TJ Levchenko, AA Zhou, HJ Wong, SS Navrotsky, A Rock, PA AF Park, Tae-Jin Levchenko, Andrey A. Zhou, Hongjun Wong, Stanislaus S. Navrotsky, Alexandra Rock, Peter A. TI Shape-dependent surface energetics and hydration of nanocrystalline TiO2 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Thermochem Lab & NEAT ORU, Davis, CA 95616 USA. SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA. Brookhaven Natl Lab, Mat & Chem Sci Dept, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 368-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303149 ER PT J AU Paterson, DJ de Jonge, MD Howard, DL Ryan, CG Kirkham, R Siddons, DP AF Paterson, David J. de Jonge, Martin D. Howard, Daryl L. Ryan, Chris G. Kirkham, Robin Siddons, D. P. TI Ultrafast scanning X-ray fluorescence enabling high definition elemental mapping and micro-XANES imaging SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Australian Synchrotron, Clayton, Vic, Australia. CSIRO, Clayton, Vic 3168, Australia. Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RI de Jonge, Martin/C-3400-2011 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 16-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302657 ER PT J AU Perroud, TD Wu, MY Branda, CS Kanouff, MP Renzi, RF Patel, KD Singh, AK AF Perroud, Thomas D. Wu, Meiye Branda, Catherine S. Kanouff, Michael P. Renzi, Ronald F. Patel, Kamlesh D. Singh, Anup K. TI High-content, multiplexed microfluidic-based cell analysis platform to study host-pathogen interactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Perroud, Thomas D.; Wu, Meiye; Branda, Catherine S.; Kanouff, Michael P.; Renzi, Ronald F.; Patel, Kamlesh D.; Singh, Anup K.] Sandia Natl Labs, Biosyst R&D, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 22-ANYL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300313 ER PT J AU Phair, L Moretto, LG Lake, PT AF Phair, Larry Moretto, Luciano G. Lake, Peter T. TI Phase transitions in systems big and small SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Phair, Larry; Moretto, Luciano G.; Lake, Peter T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 13-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303584 ER PT J AU Pickel, JM AF Pickel, Joseph M. TI Safe use of organolithium compounds in the synthesis of polymers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Pickel, Joseph M.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 33-CHAS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301120 ER PT J AU Poineau, FM Weck, P Forster, PM Sattelberger, AP Czerwinski, KR Johnstone, E AF Poineau, Frederic M. Weck, Philippe Forster, Paul M. Sattelberger, Alfred P. Czerwinski, Ken R. Johnstone, Erik TI Technetium bromides as precursors for the synthesis of low valent complexes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNLV, Dept Chem, Las Vegas, NV USA. ANL, Energy Sci & Engn Directorate, Argonne, IL USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1125-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302821 ER PT J AU Pruski, M AF Pruski, Marek TI Characterization of nanostructured catalytic materials using advanced solid-state NMR spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Pruski, Marek] Iowa State Univ, Ames Lab, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 216-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300803 ER PT J AU Rapko, B Sinkov, S Lumetta, G Warner, M Pittman, J AF Rapko, Brian Sinkov, Sergey Lumetta, Gregg Warner, Marvin Pittman, Jonathan TI Stereognostically optimized ligands as selective complexants for trans-dioxo actinide cations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Rapko, Brian; Sinkov, Sergey; Lumetta, Gregg; Warner, Marvin; Pittman, Jonathan] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 132-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303587 ER PT J AU Raymond, KN Durbin-Heavey, P Abergel, RJ Shuh, DK AF Raymond, Kenneth N. Durbin-Heavey, Patricia Abergel, Rebecca J. Shuh, David K. TI Actinide-specific sequestering agents SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Raymond, Kenneth N.; Durbin-Heavey, Patricia; Abergel, Rebecca J.; Shuh, David K.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Glenn T Seaborg Ctr, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 61-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303631 ER PT J AU Read, C Bowman, B Gardiner, M Ordaz, G Stetson, N Dillich, S AF Read, C. Bowman, B. Gardiner, M. Ordaz, G. Stetson, N. Dillich, S. TI Achievements and perspectives of the US National Program on Hydrogen Storage R SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Washington, DC 20585 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 219-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302534 ER PT J AU Reinecke, BN Ogasawara, H Nilsson, A Jaramillo, TF AF Reinecke, Benjamin N. Ogasawara, Hirohito Nilsson, Anders Jaramillo, Thomas F. TI Nanoscale effects on the electrocatalytic activity of supported gold nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Stanford Univ, Stanford, CA 94305 USA. Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. Stockholm Univ, AlbaNova Univ Ctr FYSIKUM, S-10691 Stockholm, Sweden. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 171-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300777 ER PT J AU Rinehart, JD Kozimor, SA Bartlett, BM Long, JR AF Rinehart, Jeffrey D. Kozimor, Stosh A. Bartlett, Bart M. Long, Jeffrey R. TI Uranium complexes as single-molecule magnets SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. Los Alamos Natl Lab, Div Chem, Los Alamos, NM USA. Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1045-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302789 ER PT J AU Robinson, DB Buffleben, GM Langham, ME Zuckermann, RN AF Robinson, David B. Buffleben, George M. Langham, Mary E. Zuckermann, Ronald N. TI Peptoids as versatile, tunable nanoparticle ligands SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Energy Nanomat Dept, Livermore, CA USA. Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 431-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304797 ER PT J AU Robinson, DB Langham, ME Buffleben, GM Zuckermann, RN AF Robinson, David B. Langham, Mary E. Buffleben, George M. Zuckermann, Ronald N. TI Peptoids are versatile, tunable surfactants that stabilize nanoparticles SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Energy Nanomat Dept, Livermore, CA USA. Mol Foundry Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 6-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302061 ER PT J AU Robinson, DB Gittard, SD Wu, CAM Narayan, RJ AF Robinson, David B. Gittard, Shaun D. Wu, C. -A. Max Narayan, Roger J. TI Electrically triggered drug delivery using nanoporous electrodes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Energy Nanomat Dept, Livermore, CA USA. N Carolina State Univ, Joint Dept Biomed Engn, Raleigh, NC 27695 USA. Univ N Carolina Chapel Hill, Raleigh, NC USA. RI Narayan, Roger/J-2789-2013 OI Narayan, Roger/0000-0002-4876-9869 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 184-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300504 ER PT J AU Robinson, TA Czerwinski, KR Levitskaia, TG Bryan, SA AF Robinson, Troy A. Czerwinski, Ken R. Levitskaia, Tatiana G. Bryan, Sam A. TI Separation modeling of 8-hydroxyquinoline and europium in the water/triton x-114 mixed solvent system SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Nevada, Dept Radiochem, Las Vegas, NV 89154 USA. Pacific NW Natl Lab, Radiochem Sci & Engn Grp, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 101-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303566 ER PT J AU Rocha, JDR Zhao, D Bult, JB Engtrakul, C O'Neill, KJ Barker, JG Simpson, LJ Zhou, HC Heben, MJ Blackburn, JL AF Rocha, John-David R. Zhao, Daniel Bult, Justin B. Engtrakul, Chaiwat O'Neill, Kevin J. Barker, Jacob G. Simpson, Lin J. Zhou, Hong-Cai Heben, Michael J. Blackburn, Jeffrey L. TI High-throughput detection of hydrogen sorption on carbon-based materials using Raman and infrared spectroscopies SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO USA. Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA. Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA. RI Blackburn, Jeffrey/D-7344-2012; Rocha, John-David/A-3186-2013 OI Rocha, John-David/0000-0001-6394-4349 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 247-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302548 ER PT J AU Rodgers, JM Whitelam, S Smit, B AF Rodgers, Jocelyn M. Whitelam, Stephen Smit, Berend TI Simulating the lipid-mediated aggregation of transmembrane proteins SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Rodgers, Jocelyn M.; Whitelam, Stephen; Smit, Berend] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 523-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304376 ER PT J AU Roe, D Zemla, A Zhou, C Elmer, S Schoeniger, J AF Roe, Diana Zemla, Adam Zhou, Carol Elmer, Sidney Schoeniger, Joe TI Classifying proteins by common conserved motifs SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Sandia Natl Labs, Biosyst Res Dept, Livermore, CA USA. Lawrence Livermore, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 291-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302147 ER PT J AU Rose, V Provis, JL Bernal, SA Holt, MV Winarski, RP Maser, J van Deventer, JSJ AF Rose, Volker Provis, John L. Bernal, Susan A. Holt, Martin V. Winarski, Robert P. Maser, Jorg van Deventer, Jannie S. J. TI High-resolution nanoprobe X-ray fluorescence characterization of heterogeneous calcium and heavy metal distributions in alkali-activated fly ash SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Univ Melbourne, Dept Chem & Biomol Engn, Melbourne, Vic, Australia. Univ Valle, Dept Mat Engn, Cali, Colombia. RI Maser, Jorg/K-6817-2013; Provis, John/A-7631-2008 OI Provis, John/0000-0003-3372-8922 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 43-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302685 ER PT J AU Rubi, E Zajickova, Z Svec, F AF Rubi, Emir Zajickova, Zuzana Svec, Frantisek TI Alumina-based monolithic capillaries SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Barry Univ Miami, Dept Phys Sci, Shores, FL USA. Mol Foundry Lawrence Berkeley Natl Lab, Berkeley, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 309-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301462 ER PT J AU Russell, D Tillotson, R Peterman, DR AF Russell, Dale Tillotson, Richard Peterman, Dean R. TI Electrochemical analysis of lanthanide and actinide complexes of selective ligands SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Boise State Univ, Dept Chem & Biochem, Boise, ID 83725 USA. Idaho Natl Lab, Dept Aqueous Separat & Radiochem, Idaho Falls, ID USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 95-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303644 ER PT J AU Sabio, EM Chi, MF Browning, N Osterloh, F AF Sabio, Erwin M. Chi, Miaofang Browning, Nigel Osterloh, Frank TI Labeling the active sites on the HCa2Nb3O10 nanosheet water-splitting photocatalyst SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA. RI Chi, Miaofang/Q-2489-2015 OI Chi, Miaofang/0000-0003-0764-1567 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1200-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302863 ER PT J AU Sadatmousavi, P Williamson, MJ Nimlos, MR Crowley, MF Beckham, G Himmel, ME Walker, RC AF Sadatmousavi, Parastou Williamson, Mark J. Nimlos, Mark R. Crowley, Michael F. Beckham, Gregg Himmel, Michael E. Walker, Ross C. TI Recent advances in understanding the mechanism of action of the catalytic binding module of CBH I cellulase through advanced MD simulations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif San Diego, San Diego Supercomp Ctr, San Diego, CA 92103 USA. Natl Renewable Energy Lab, Golden, CO USA. RI crowley, michael/A-4852-2013 OI crowley, michael/0000-0001-5163-9398 NR 0 TC 0 Z9 0 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 95-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301085 ER PT J AU Sadow, AD AF Sadow, Aaron D. TI Activation of SiH groups in rare earth organometallic compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sadow, Aaron D.] Iowa State Univ, Ames Lab, Ames, IA USA. [Sadow, Aaron D.] Iowa State Univ, Dept Chem, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 151-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303061 ER PT J AU Santos, CS Manpadi, M Baranowski, A Williams, LJ Wishart, JF Castner, EW AF Santos, Cherry S. Manpadi, Madhuri Baranowski, Alex Williams, Lawrence J. Wishart, James F. Castner, Edward W., Jr. TI Electron-transfer from electron-donating ionic liquids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ USA. Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. NR 2 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 727-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304466 ER PT J AU Sarkar, SK Kim, JY Goldstein, DN Neale, NR Zhu, K Elliott, CM Frank, AJ George, SM AF Sarkar, Shaibal K. Kim, Jin Young Goldstein, David N. Neale, Nathan R. Zhu, Kai Elliott, C. Michael Frank, Arthur J. George, Steven M. TI In2S3 atomic layer deposition and its application as a sensitizer on TiO2 nanotube arrays for solar energy conversion SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO USA. Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA. Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA. RI George, Steven/O-2163-2013 OI George, Steven/0000-0003-0253-9184 NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 636-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303262 ER PT J AU Scherer, M Handler, R Johnson, C Beard, B Gorski, C Rosso, K AF Scherer, Michelle Handler, Robert Johnson, Clark Beard, Brian Gorski, Christopher Rosso, Kevin TI Redox driven atom exchange in goethite and magnetite SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Iowa, Dept Civil & Environm Engn, Iowa City, IA 52242 USA. Univ Wisconsin, Dept Geol & Geophys, Madison, WI 53706 USA. Pacific NW Natl Lab, Chem & Mat Sci Div, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 154-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302235 ER PT J AU Scroggins, ST Chi, YG Frechet, JMJ AF Scroggins, Steven T. Chi, Yonggui Frechet, Jean M. J. TI Polarity-directed chemoselectivity in one-pot reactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA USA. RI Chi, Yonggui Robin/B-7023-2011 OI Chi, Yonggui Robin/0000-0003-0573-257X NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 453-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303835 ER PT J AU Segalman, RA AF Segalman, Rachel A. TI Self-assembly of rod-coil block copolymers and applications to semiconducting and bioinspired molecules SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Segalman, Rachel A.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Segalman, Rachel A.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 151-POLY PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304700 ER PT J AU Selig, MJ Tucker, MP Himmel, ME Law, C Decker, SR AF Selig, Michael J. Tucker, Melvin P. Himmel, Michael E. Law, Cody Decker, Steve R. TI High throughput screening of lignocellulosic biomass populations for recalcitrance differences SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Natl Renewable Energy Lab, Chem & Biosci Ctr, Golden, CO USA. Natl Renewable Energy Lab, Natl Bioenergy Ctr, Golden, CO USA. Colorado State Univ, Ft Collins, CO 80523 USA. NR 0 TC 0 Z9 0 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 296-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301036 ER PT J AU Sgarlata, C Arena, G Raymond, KN AF Sgarlata, Carmelo Arena, Giuseppe Raymond, Kenneth N. TI Deconvoluting the external and internal guest binding thermodynamics of a supramolecular host in water SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 866-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303353 ER PT J AU Sheikholeslami, SN Jun, Y Jain, P Alivisatos, AP AF Sheikholeslami, Sassan N. Jun, Youngwook Jain, Prashant Alivisatos, A. Paul TI Single particle SERS studies of DNA assembled silver nanoparticle dimers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Sheikholeslami, Sassan N.; Jun, Youngwook; Jain, Prashant; Alivisatos, A. Paul] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 2 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 547-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304384 ER PT J AU Shenoy, G AF Shenoy, Gopal TI MAssbauer spectroscopy: Challenges and opportunities in the next 50 years SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Shenoy, Gopal] Argonne Natl Lab, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 629-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302767 ER PT J AU Shi, Y Choi, BY Salmeron, M AF Shi, Yu Choi, Byoung Y. Salmeron, Miquel TI Imaging submonolayers of water on surfaces with non-contact atomic force microscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 229-COLL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301868 ER PT J AU Singer, DM Banfield, JF Waychunas, GA AF Singer, David M. Banfield, Jill F. Waychunas, Glenn A. TI Identification of U(VI) sorption products on magnetite by grazing incidence X-ray scattering and X-ray absorption spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 135-GEOC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302642 ER PT J AU Slowing, II Zhao, Y Valenstein, J Trewyn, BG Chung, PW Lin, VSY AF Slowing, Igor I. Zhao, Yannan Valenstein, Justin Trewyn, Brian G. Chung, Po W. Lin, Victor S. -Y. TI Mesoporous nanoparticles for catalytic applications in cellular environments SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Ames Lab, Ames, IA USA. Iowa State Univ, Dept Chem, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 213-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300801 ER PT J AU Smith, EA Mckee, K AF Smith, Emily A. McKee, Kristopher TI Scanning angle total internal reflection Raman microspectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Dept Chem, Ames, IA USA. Ames Lab, Dept Energy, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 196-ANYL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300297 ER PT J AU Solunke, RD Veser, G AF Solunke, Rahul D. Veser, Goetz TI Simultaneous desulfurization and CO2-capture in chemical-looping combustion of sulfur-contaminated synthesis gas SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US DOE, Natl Energy Technol Lab, Pittsburgh, PA USA. Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 283-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302558 ER PT J AU Stair, PC AF Stair, Peter C. TI Award Address (George A. Olah Award in Hydrocarbon or Petroleum Chemistry Sponsored by the George A. Olah Endowment). From metal surfaces to oxides and back again SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Stair, Peter C.] Northwestern Univ, Dept Chem, Evanston, IL USA. [Stair, Peter C.] Argonne Natl Lab, Dept Sci & Chem Engn, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 125-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300755 ER PT J AU Steen, EJ Kang, YS Bokinsky, G Keasling, JD AF Steen, Eric J. Kang, Yisheng Bokinsky, Gregory Keasling, Jay D. TI Metabolic engineering of Escherichia coli for the production of fatty acid-derived chemicals from plant biomass SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 US JBEI, Dept Energy, Emeryville, CA USA. UC San Francisco, UC Berkeley, Dept Bioengn, San Francisco, CA USA. RI Keasling, Jay/J-9162-2012 OI Keasling, Jay/0000-0003-4170-6088 NR 0 TC 0 Z9 0 U1 0 U2 9 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 232-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300532 ER PT J AU Stewart, BJ Kuhn, E Navid, A Ognibene, T Bench, G AF Stewart, Benjamin J. Kuhn, Edward Navid, Ali Ognibene, Ted Bench, Graham TI Yeast metabolic flux measurement by accelerator mass spectrometry SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA 94550 USA. Lawrence Livermore Natl Lab, Biosci & Biotechnol Div, Livermore, CA 94550 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 214-BIOT PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300520 ER PT J AU Sui, S Cairns, E AF Sui, Sheng Cairns, Elton TI Effects of anode diffusion on direct methanol fuel cell (DMFC) performance SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Shanghai Jiao Tong Univ, Inst Fuel Cell, Shanghai 200030, Peoples R China. Lawrence Berkeley Natl Lab, Berkeley, CA USA. Univ Calif Berkely, Berkeley, CA USA. RI Cairns, Elton/E-8873-2012 OI Cairns, Elton/0000-0002-1179-7591 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 70-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302611 ER PT J AU Sulc, R Blackwell, JM Younkin, TR Callahan, R Janik, I Bartels, D AF Sulc, Robert Blackwell, James M. Younkin, Todd R. Callahan, Ryan Janik, Ireneusz Bartels, David TI Understanding mechanisms for acid production from neutral aryl sulfonates using pulse radiolysis and e-beam irradiation as a proxy for EUV radiation SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, LBNL Mol Foundry, Intels Mol Adv Patterning MAP Program, Berkeley, CA 94720 USA. Intel Corp, Hillsboro, OR 97124 USA. FUJIFILM Elect Mat USA Inc, Fujifilm N Kingstown, RI USA. Univ Notre Dame, Radiat Lab, Notre Dame, IN 46556 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 35-ORGN PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303803 ER PT J AU Sun, L Li, CL Chuck, G Dibble, DC Simmons, BA Singh, S AF Sun, Lan Li, Chenlin Chuck, George Dibble, Dean C. Simmons, Blake A. Singh, Seema TI Genetic enhancement of bioenergy feedstocks for efficient biofuel production SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Joint BioEnergy Inst, Dept Deconstruct, Emeryville, CA USA. Sandia Natl Labs, Dept Biomass Sci & Convers Technol, Livermore, CA USA. USDA, Dept Agr Res Serv, Albany, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 266-CELL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301025 ER PT J AU Taylor, WA Vieira, DJ Nortier, FM AF Taylor, Wayne A. Vieira, David J. Nortier, Francois M. TI Recovery and purification of lutetium radioisotopes from proton irradiated hafnium targets SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Taylor, Wayne A.; Vieira, David J.; Nortier, Francois M.] Los Alamos Natl Lab, Dept Chem Div, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 187-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303613 ER PT J AU Teague, CM AF Teague, Craig M. TI Nanoscience: An advanced undergraduate course for science majors SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Teague, Craig M.] Cornell Coll, Dept Chem, Mt Vernon, IA 52314 USA. [Teague, Craig M.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 155-CHED PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189301328 ER PT J AU Thiel, PA AF Thiel, Patricia A. TI Award Address (Arthur W. Adamson Award for Distinguished Service in the Advancement of Surface Chemistry Sponsored by the ACS). Nanostructure coarsening on silver surfaces and the effect of adsorbates: Finding elusive agents of change SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Thiel, Patricia A.] Iowa State Univ, Dept Chem, Ames, IA USA. [Thiel, Patricia A.] Iowa State Univ, Ames Lab, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 191-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304234 ER PT J AU Thomas, D Den Auwer, C Gaelle, D Fillaux, C Shuh, D Tylliszczak, T AF Thomas, Dumas Den Auwer, Christophe Gaelle, Dupony Fillaux, Clara Shuh, David Tylliszczak, Tolek TI X-ray absorption spectroscopic studies of hexacyanoferrate-actinide molecular compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Radiochmistry Proc CEA, Bagnols Sur Ceze, France. Berkeley Lab, Div Chem Sci, Berkeley, CA USA. NR 4 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 165-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303601 ER PT J AU Tian, GX Rao, LF AF Tian, Guoxin Rao, Linfeng TI Selective separation of actinide ions using N,N-di-2-ethyl-hexyl-3-oxa-glutaramic acid SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Tian, Guoxin; Rao, Linfeng] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 85-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303640 ER PT J AU Tiede, DM Mulfort, KL Bender, SL Poluektov, OG AF Tiede, David M. Mulfort, Karen L. Bender, Shana L. Poluektov, Oleg G. TI Characterizing cobaloxime function as a catalyst in supramolecular and hybrid biomimetic architectures for solar hydrogen production SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Tiede, David M.; Mulfort, Karen L.; Bender, Shana L.; Poluektov, Oleg G.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 34-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300816 ER PT J AU Titov, AV Zapol, P Kral, P Liu, DJ Curtiss, L AF Titov, Alexey V. Zapol, Peter Kral, Petr Liu, Di-Jia Curtiss, Larry TI Catalytic Fe-xN sites in carbon nanotubes and graphene SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Illinois, Dept Chem, Chicago, IL 60680 USA. Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. RI Zapol, Peter/G-1810-2012 OI Zapol, Peter/0000-0003-0570-9169 NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 190-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300787 ER PT J AU Trewyn, BG Lin, VSY AF Trewyn, Brian G. Lin, Victor S. -Y. TI Mesoporous nanomaterials for the uptake of fuel relevant molecules from biosystems and the conversion to biofuel SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Iowa State Univ, Dept Chem, Ames, IA USA. US DOE, Ames Lab, Ames, IA USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 218-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300805 ER PT J AU Tsai, MK Fujita, E Muckerman, JT AF Tsai, Ming-Kang Fujita, Etsuko Muckerman, James T. TI Water oxidation by molecular catalysts with non-innocent ligands SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RI Muckerman, James/D-8752-2013; Fujita, Etsuko/D-8814-2013 NR 2 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 53-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303214 ER PT J AU Tsung, CK Huang, WY Li, YM Kuhn, JN Somorjai, GA Yang, PD AF Tsung, Chia-Kuang Huang, Wenyu Li, Yimin Kuhn, John N. Somorjai, Gabor A. Yang, Peidong TI Catalytic studies for sub-10 nm platinum alloy nanocrystals with size control SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Li, Yimin/F-5817-2012 NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 888-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303359 ER PT J AU Tsung, CK Huang, WY Kuhn, JN Li, YM Somorjai, GA Yang, PD AF Tsung, Chia-Kuang Huang, Wenyu Kuhn, John N. Li, Yimin Somorjai, Gabor A. Yang, Peidong TI Shaped platinum alloy nanocrystals with composition control: Catalytic studies for hydrogenation and dehydrogenation reactions SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Li, Yimin/F-5817-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1247-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302887 ER PT J AU Turick, CE Ekechukwu, AA Milliken, CE Dadachova, E AF Turick, Charles E. Ekechukwu, Amy A. Milliken, Charlie E. Dadachova, Ekaterina TI Microbial fuel cell technology in nuclear environments SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Savannah River Natl Lab, Aiken, SC USA. Yeshiva Univ, Albert Einstein Coll Med, Bronx, NY USA. RI Dadachova, Ekaterina/I-7838-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 172-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303605 ER PT J AU Uchida, M McDermott, G Wetzler, M LeGros, MA Myllys, M Knoechel, C Barron, AE Larabell, CA AF Uchida, Maho McDermott, Gerry Wetzler, Modi LeGros, Mark A. Myllys, Markko Knoechel, Christian Barron, Annelise E. Larabell, Carolyn A. TI Soft X-ray tomography of Candida albicans treated with antifungal peptoids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif San Francisco, Dept Anat, San Francisco, CA 94143 USA. Stanford Univ, Dept Bioengn, Stanford, CA 94305 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 222-BIOL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300411 ER PT J AU Van Orden, A Shepherd, D Whitcomb, K Gelfand, M Goodwin, PM AF Van Orden, Alan Shepherd, Douglas Whitcomb, Kevin Gelfand, Martin Goodwin, Peter M. TI Single molecule studies of electronic coupling in semiconductor nanocrystal clusters SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA. Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA. Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 350-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302587 ER PT J AU Vazquez-Mayagoitia, A Sherrill, DC Apra, E Sumpter, BG AF Vazquez-Mayagoitia, Alvaro Sherrill, David C. Apra, Edoardo Sumpter, Bobby G. TI Density functional methods for potential energy curves of non-bonded interactions: The XYG3 and B97-D approximations SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. Georgia Inst Technol, Ctr Computat Mol Sci & Technol, Atlanta, GA 30332 USA. Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA. RI Sumpter, Bobby/C-9459-2013; Vazquez-Mayagoitia, Alvaro/A-9755-2010 OI Sumpter, Bobby/0000-0001-6341-0355; NR 2 TC 0 Z9 0 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 628-PHYS PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189304419 ER PT J AU Vijayan, B Shapiro, DF DeSario, PA Dimitrijevic, N Gray, KA AF Vijayan, Baiju Shapiro, Daniel Finkelstein DeSario, Paul A. Dimitrijevic, Nada Gray, Kimberly A. TI Photocatalytic reduction of carbon dioxide to fuel using hydrothermally synthesized titania nanotubes SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA. Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 43-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302603 ER PT J AU Wang, C Stamenkovic, V Markovic, N AF Wang, Chao Stamenkovic, Vojislav Markovic, Nenad TI Nanostructure engineering of PtNi nanoparticles for electrocatalytic reduction of oxygen SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wang, Chao; Stamenkovic, Vojislav; Markovic, Nenad] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 166-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300775 ER PT J AU Wang, HM Wu, ZC Plaseied, A Jenkins, P Simpson, L Engtrakul, C Ren, ZY AF Wang, Heming Wu, Zhuangchun Plaseied, Atousa Jenkins, Peter Simpson, Lin Engtrakul, Chaiwat Ren, Zhiyong TI Carbon nanofiber modified air cathodes for improving electricity production in microbial fuel cells SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Colorado, Dept Civil Engn, Denver, CO 80202 USA. Univ Colorado, Dept Mech Engn, Denver, CO 80202 USA. Natl Renewable Energy Lab, Carbon Nanosci Div, Golden, CO USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 455-ENVR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302391 ER PT J AU Wang, JH Vukovic, S Philpott, MR Zubarev, DY Austin, B Lester, WA Cui, T Kawazoe, Y AF Wang, Jinhua Vukovic, Sinisa Philpott, Michael R. Zubarev, Dmitry Yu. Austin, Brian Lester, William A., Jr. Cui, Tian Kawazoe, Yoshiyuki TI Ab initio methods in graphene modeling SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Jilin Univ, State Key Lab Superhard Mat, Changchun 130023, Jilin, Peoples R China. Univ Calif Berkeley, Dept Chem, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RI Vukovic, Sinisa/J-3106-2013 OI Vukovic, Sinisa/0000-0002-7682-0705 NR 0 TC 0 Z9 0 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 257-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302136 ER PT J AU Wang, Y AF Wang, Yong TI Bimetallic catalysts for reforming of bio-derived liquids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wang, Yong] Pacific NW Natl Lab, Inst Interfacial Catalysis, Richland, WA 99352 USA. [Wang, Yong] Washington State Univ, Voiland Sch Chem Engn & Bioengn, Pullman, WA 99164 USA. RI Wang, Yong/C-2344-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 178-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300781 ER PT J AU Welch, KD DuBois, DL Bullock, RM AF Welch, Kevin D. DuBois, Daniel L. Bullock, R. Morris TI Manganese(I) complexes containing diphosphine ligands with pendant amine bases as functional mimics of hydrogenase SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Welch, Kevin D.; DuBois, Daniel L.; Bullock, R. Morris] Pacific NW Natl Lab, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 927-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303374 ER PT J AU Werkema, E Andersen, R AF Werkema, Evan Andersen, Richard TI Reactions of [1,2,4-(Me3C)(3)C5H2](2)CeH and Cp(A)over-cap cent[(Me3C)(2)C5H2C(Me-2)CH2]Ce with methyl halides and ethers SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1327-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303038 ER PT J AU White, TL Wiedenman, BJ Dobos, JG Sexton, WC AF White, Thomas L. Wiedenman, Boyd J. Dobos, James G. Sexton, William C. TI Characterization of amine capture glassware for ion chromatography sample preparation at the Savannah River Site SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [White, Thomas L.; Wiedenman, Boyd J.; Dobos, James G.; Sexton, William C.] Savannah River Natl Lab, Aiken, SC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 177-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303608 ER PT J AU Wiedenman, BJ Pierce, RA Coleman, CJ AF Wiedenman, Boyd J. Pierce, Robert A. Coleman, Charles J. TI Characterization of trace impurities in plutonium feed materials for the mixed oxide facility at the Savannah River Site SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wiedenman, Boyd J.; Pierce, Robert A.; Coleman, Charles J.] Savannah River Natl Lab, Aiken, SC USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 159-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303597 ER PT J AU Wilkerson, MP Berg, JM Boland, KS Clark, DL Conradson, SD Kozimor, SA Scott, BL AF Wilkerson, Marianne P. Berg, John M. Boland, Kevin S. Clark, David L. Conradson, Steven D. Kozimor, Stosh A. Scott, Brian L. TI Near-infrared photoluminescence and ligand K-edge X-ray absorption spectroscopies of AnO(2)Cl(4)(2-) (An: U, Np, Pu) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Los Alamos Natl Lab, Div Chem, Los Alamos, NM USA. Los Alamos Natl Lab, Plutonium Mfg & Technol Div, Los Alamos, NM USA. Los Alamos Natl Lab, Stockpile Mfg & Support Directorate, Los Alamos, NM USA. Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 161-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303599 ER PT J AU Wong, SS AF Wong, Stanislaus S. TI Template-based synthesis of nanostructures SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wong, Stanislaus S.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Wong, Stanislaus S.] Brookhaven Natl Lab, Upton, NY 11973 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 27-IEC PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302740 ER PT J AU Worsley, MA Kuntz, JD Han, TYJ Cervantes, O Pauzauskie, PJ Satcher, JH Baumann, TF AF Worsley, Marcus A. Kuntz, Joshua D. Han, T. Yong-Jin Cervantes, Octavio Pauzauskie, Peter J. Satcher, Joe H. Baumann, Theodore F. TI High surface area nanocarbon-supported metal oxide aerogels SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Worsley, Marcus A.; Kuntz, Joshua D.; Han, T. Yong-Jin; Cervantes, Octavio; Pauzauskie, Peter J.; Satcher, Joe H.; Baumann, Theodore F.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA USA. RI Worsley, Marcus/G-2382-2014 OI Worsley, Marcus/0000-0002-8012-7727 NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 19-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300786 ER PT J AU Wu, HW Volponi, JV Singh, S AF Wu, Huawen Volponi, Joanne V. Singh, Seema TI Single-cell diesel mining: Direct and quantitative monitoring of microalgal oil production in vivo by laser-trapping Raman spectroscopy SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Wu, Huawen; Volponi, Joanne V.; Singh, Seema] Sandia Natl Labs, Dept Biomass Sci & Convers Technol, Livermore, CA USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 8-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302618 ER PT J AU Xu, Y AF Xu, Ye TI Selective hydrogenolysis of small oxygenates on transition metal surfaces SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Xu, Ye] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 208-FUEL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302529 ER PT J AU Xun, SD Zheng, HH Song, XY Battaglia, V Liu, G AF Xun, Shidi Zheng, Honghe Song, Xiangyun Battaglia, Vince Liu, Gao TI Electrochemical properties of Si nanocomposite anode for lithium ion battery SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Xun, Shidi; Zheng, Honghe; Song, Xiangyun; Battaglia, Vince; Liu, Gao] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RI xun, shidi/D-5679-2012 NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1179-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302853 ER PT J AU Yang, JY Bullock, M DuBois, MR DuBois, DL AF Yang, Jenny Y. Bullock, Morris DuBois, Mary Rakowski DuBois, Daniel L. TI Role of proton relays in molecular electrocatalysts for hydrogen oxidation and production SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Yang, Jenny Y.; Bullock, Morris; DuBois, Mary Rakowski; DuBois, Daniel L.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 928-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303375 ER PT J AU Yang, JY Bullock, M DuBois, MR DuBois, DL AF Yang, Jenny Y. Bullock, Morris DuBois, Mary Rakowski DuBois, Daniel L. TI Role of pendant amines in the design of oxygen reduction electrocatalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 [Yang, Jenny Y.; Bullock, Morris; DuBois, Mary Rakowski; DuBois, Daniel L.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. NR 0 TC 0 Z9 0 U1 1 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 91-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303367 ER PT J AU Yoon, CW Hirsekorn, K Neidig, M Tilley, D AF Yoon, Chang Won Hirsekorn, Kurt Neidig, Michael Tilley, Don TI Influence of surface modification and additives for the decomposition of aqueous hydrogen peroxide over heterogeneous TiSBA15 and TS-1 catalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. Dow Chem Co USA, Core R&D Chem & Catalysis, Midland, MI 48674 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 909-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303366 ER PT J AU Zalupski, P Nash, K Martin, L AF Zalupski, Peter Nash, Ken Martin, Leigh TI Calorimetric studies of liquid-liquid distribution of actinides, lanthanides and other fission products SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Idaho Natl Lab, Scoville, ID USA. Washington State Univ, Pullman, ID USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 39-NUCL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303625 ER PT J AU Zhang, ZC Zhao, HB Su, Y Brown, HM Holladay, JE Huang, XW Zhou, XD Li, GS Amonette, JE Fulton, JL Jia, SY Cox, B Guo, XW Ekerdt, JG AF Zhang, Z. Conrad Zhao, Haibo Su, Yu Brown, Heather M. Holladay, Johnathan E. Huang, Xiwen Zhou, Xiao-Dong Li, Guosheng Amonette, James E. Fulton, John L. Jia, Songyan Cox, Blair Guo, Xinwen Ekerdt, John G. TI Catalysis of cellulose and lignin in liquid solvents SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 KiOR Inc, Pasadena, CA USA. Pacific NW Natl Lab, Richland, WA 99352 USA. Univ Texas Austin, Austin, TX 78712 USA. NR 0 TC 0 Z9 0 U1 1 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 154-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300768 ER PT J AU Zhao, H Baker, GA Cowins, JV Song, ZY Olubajo, O AF Zhao, Hua Baker, Gary A. Cowins, Janet V. Song, Zhiyan Olubajo, Olarongbe TI Improving the hydrolysis and derivatization of cellulose using ionic liquids SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Savannah State Univ, Dept Chem, Savannah, GA USA. Oak Ridge Natl Lab, Oak Ridge, TN USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 123-AGFD PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300014 ER PT J AU Zhao, X Corcoran, SG Kelley, MJ AF Zhao, Xin Corcoran, Sean G. Kelley, Michael J. TI Fluoride-free electropolishing of niobium cavities for next-generation particle accelerators SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Virginia Tech, Dept Mat Sci & Engn, Blacksburg, VA USA. Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. Coll William & Mary, Dept Appl Sci, Williamsburg, VA USA. RI zhao, xin/I-2896-2012 OI zhao, xin/0000-0003-0175-6363 NR 1 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 1171-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302851 ER PT J AU Zhou, ZH Wang, HX Shilov, S Pelmenschikov, V Mitra, D Cramer, SP AF Zhou, Zhao-Hui Wang, Hongxin Shilov, Sergey Pelmenschikov, Vladmir Mitra, Devrani Cramer, Stephen P. TI Spectroscopic investigation of isotopic and chiral homocitrate and molybdenum compounds SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen, Fujian, Peoples R China. Bruker Opt, Billerica, MA USA. Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA. RI SKL, PCOSS/D-4395-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 753-INOR PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189303310 ER PT J AU Zhu, XB Greeley, J Strasser, P AF Zhu, Xiaobing Greeley, Jeffrey Strasser, Peter TI Adsorption-driven surface segregation effects in core-shell fuel cell nanoparticle electrocatalysts SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Houston, Dept Chem & Biomol Engn, Houston, TX USA. Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. Tech Univ Berlin, Dept Chem, Berlin, Germany. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RI Zhu, Xiaobing/C-6122-2013; Strasser, Peter/A-1868-2012 NR 0 TC 0 Z9 0 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 205-CATL PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189300799 ER PT J AU Zubarev, DY Clark, GNI Head-Gordon, T Lester, WA AF Zubarev, Dmitry Yu. Clark, Gary N. I. Head-Gordon, Teresa Lester, William A., Jr. TI Beyond a single solvated electron: Hybrid quantum Monte Carlo and molecular mechanics approach SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 Univ Calif Berkeley, Dept Chem, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD MAR 21 PY 2010 VL 239 MA 385-COMP PG 1 WC Chemistry, Multidisciplinary SC Chemistry GA V21DW UT WOS:000208189302185 ER PT J AU Chandler, DW AF Chandler, David W. TI Cold and ultracold molecules: Spotlight on orbiting resonances SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article DE atom-molecule collisions; predissociation; rotational states; translational states; van der Waals forces; vibrational states ID ROTATIONAL PREDISSOCIATION; VIBRATIONAL-RELAXATION; INFRARED-SPECTROSCOPY; THERMAL ENERGIES; INTERNAL ROTOR; CROSS-SECTION; ATOMIC GASES; SCATTERING; COLLISIONS; VAN AB There is great interest in the production of cold molecules, at temperatures below 1 K, and ultracold molecules, at temperatures below 1 mK. Such molecules have potential applications in areas ranging from precision measurement to quantum information storage and processing, and quantum gases of ultracold polar molecules are expected to exhibit novel quantum phases. In addition, cold molecules open up a new domain for collision physics, dominated by long-range forces and scattering resonances. There have been major recent advances both in cooling molecules from room temperature and in forming molecules in ultracold atomic gases. As these techniques mature, and cold and ultracold samples are more accessible, collision studies at previously unavailable energies will be possible. This spotlight article will highlight some of the background and motivation for studying collisions at low energies and will direct readers to recent articles on the recent experimental advancements. C1 Sandia Natl Labs, Livermore, CA 94550 USA. RP Chandler, DW (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM chand@sandia.gov FU U.S. Department of Energy, Office of Basic Energy Science FX Funding for this work was provided by the U.S. Department of Energy, Office of Basic Energy Science. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Co., for the U.S. Department of Energy. NR 75 TC 45 Z9 45 U1 4 U2 26 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD MAR 21 PY 2010 VL 132 IS 11 AR 110901 DI 10.1063/1.3357286 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 572IZ UT WOS:000275825500001 PM 20331270 ER PT J AU Hurley, K Rowlinson, A Bellm, E Perley, D Mitrofanov, IG Golovin, DV Kozyrev, AS Litvak, ML Sanin, AB Boynton, W Fellows, C Harshmann, K Ohno, M Yamaoka, K Nakagawa, YE Smith, DM Cline, T Tanvir, NR O'Brien, PT Wiersema, K Rol, E Levan, A Rhoads, J Fruchter, A Bersier, D Kavelaars, JJ Gehrels, N Krimm, H Palmer, DM Duncan, RC Wigger, C Hajdas, W Atteia, JL Ricker, G Vanderspek, R Rau, A von Kienlin, A AF Hurley, K. Rowlinson, A. Bellm, E. Perley, D. Mitrofanov, I. G. Golovin, D. V. Kozyrev, A. S. Litvak, M. L. Sanin, A. B. Boynton, W. Fellows, C. Harshmann, K. Ohno, M. Yamaoka, K. Nakagawa, Y. E. Smith, D. M. Cline, T. Tanvir, N. R. O'Brien, P. T. Wiersema, K. Rol, E. Levan, A. Rhoads, J. Fruchter, A. Bersier, D. Kavelaars, J. J. Gehrels, N. Krimm, H. Palmer, D. M. Duncan, R. C. Wigger, C. Hajdas, W. Atteia, J. -L. Ricker, G. Vanderspek, R. Rau, A. von Kienlin, A. TI A new analysis of the short-duration, hard-spectrum GRB 051103, a possible extragalactic soft gamma repeater giant flare SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE stars: neutron; gamma-rays: bursts ID RAY BURST CATALOG; 2004 DECEMBER 27; SUPERNOVA-REMNANTS; HOST GALAXY; INTERPLANETARY NETWORK; IMAGE SUBTRACTION; NEUTRON-STARS; SGR 1806-20; SGR-1806-20; AFTERGLOW AB GRB 051103 is considered to be a candidate soft gamma repeater (SGR) extragalactic giant magnetar flare by virtue of its proximity on the sky to M81/M82, as well as its time history, localization and energy spectrum. We have derived a refined interplanetary network localization for this burst which reduces the size of the error box by over a factor of 2. We examine its time history for evidence of a periodic component, which would be one signature of an SGR giant flare, and conclude that this component is neither detected nor detectable under reasonable assumptions. We analyse the time-resolved energy spectra of this event with improved time and energy resolution, and conclude that although the spectrum is very hard its temporal evolution at late times cannot be determined, which further complicates the giant flare association. We also present new optical observations reaching limiting magnitudes of R > 24.5, about 4-mag deeper than previously reported. In tandem with serendipitous observations of M81 taken immediately before and 1 month after the burst, these place strong constraints on any rapidly variable sources in the region of the refined error ellipse proximate to M81. We do not find any convincing afterglow candidates from either background galaxies or sources in M81, although within the refined error region we do locate two UV bright star-forming regions which may host SGRs. A supernova remnant (SNR) within the error ellipse could provide further support for an SGR giant flare association, but we were unable to identify any SNR within the error ellipse. These data still do not allow strong constraints on the nature of the GRB 051103 progenitor, and suggest that candidate extragalactic SGR giant flares will be difficult, although not impossible, to confirm. C1 [Hurley, K.; Bellm, E.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Rowlinson, A.; Tanvir, N. R.; O'Brien, P. T.; Wiersema, K.; Rol, E.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. [Perley, D.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Mitrofanov, I. G.; Golovin, D. V.; Kozyrev, A. S.; Litvak, M. L.; Sanin, A. B.] Inst Space Res, Moscow 117997, Russia. [Boynton, W.; Fellows, C.; Harshmann, K.] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA. [Ohno, M.] JAXA, ISAS, Sagamihara, Kanagawa 2298510, Japan. [Yamaoka, K.] Aoyama Gakuin Univ, Dept Math & Phys, Kanagawa 2298558, Japan. [Nakagawa, Y. E.] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. [Smith, D. M.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA. [Smith, D. M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. [Cline, T.; Gehrels, N.; Krimm, H.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Rol, E.] Univ Amsterdam, NL-1098 SJ Amsterdam, Netherlands. [Levan, A.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Rhoads, J.] Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA. [Fruchter, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Bersier, D.] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 1LD, Merseyside, England. [Kavelaars, J. J.] Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada. [Palmer, D. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Duncan, R. C.] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA. [Wigger, C.; Hajdas, W.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland. [Atteia, J. -L.] Observ Midi Pyrenees, Astrophys Lab, F-31400 Toulouse, France. [Ricker, G.; Vanderspek, R.] MIT, Kavli Inst Astrophys & Space Res, Cambridge, MA 02139 USA. [Rau, A.; von Kienlin, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. RP Hurley, K (reprint author), Univ Calif Berkeley, Space Sci Lab, 7 Gauss Way, Berkeley, CA 94720 USA. EM khurley@ssl.berkeley.edu RI Gehrels, Neil/D-2971-2012; OI Bellm, Eric/0000-0001-8018-5348 FU NASA [NASA NNG04GQ84G, NAG5-12706, NNX06AI36G]; JPL [1282046]; MIT [SC-A-293291]; Science and Technology Funding Council; Science and Technology Facilities Council and through the EU; NRC; CNRS; US Government [NAG W-2166] FX KH is grateful for IPN support from the NASA Guest Investigator programmes for Swift (NASA NNG04GQ84G), INTEGRAL (NAG5-12706) and Suzaku (NNX06AI36G); for support under the Mars Odyssey Participating Scientist Program, JPL Contract 1282046 and under the HETE-II co-investigator program, MIT Contract SC-A-293291. We are also grateful to the Konus-Wind team - E. Mazets, S. Golenetskii, D. Frederiks, V. Pal'shin and R. Aptekar - for contributing the Konus data to this study.; AR, KW and ER, NRT and AL would like to acknowledge funding from the Science and Technology Funding Council.; This research has made use of data obtained using, or software provided by, the UK's AstroGrid Virtual Observatory Project, which is funded by the Science and Technology Facilities Council and through the EU's Framework 6 programme.; The National Optical Astronomy Observatory (NOAO) consists of Kitt Peak National Observatory near Tucson, Arizona, Cerro Tololo Inter-American Observatory near La Serena, Chilie and the NOAO Gemini Science Centre. NOAO is operated by the Association of the Universities for Research in Astronomy under a cooperative agreement with the National Science Foundation.; Based on observations with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the CFHT which is operated by the National Research Council (NRC) of Canada, the Institut National des Sceicne de l'Univers of the Centre National de la Recherche Scientifique (CNRS) of France and the University of Hawaii. This work is based in part on data products produced at TERAPIX and the Canadian Astronomy Data Centre as part of the CFHT Legacy Survey, a collaborative project of NRC and CNRS.; The Digitized Sky Surveys were produced at the Space Telescope Science Institute under US Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope. The plates were processed into the present compressed digital form with the permission of these institutions.; Based on observations made through the Isaac Newton Group's Wide Field Camera Survey Programme with the INT operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofsica de Canarias. NR 96 TC 21 Z9 21 U1 0 U2 0 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD MAR 21 PY 2010 VL 403 IS 1 BP 342 EP 352 DI 10.1111/j.1365-2966.2009.16118.x PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 579EW UT WOS:000276351600046 ER PT J AU Allen, J Awes, T Badala, A Baumgart, S Bellwied, R Benhabib, L Bernard, C Bianchi, N Blanco, F Bortoli, Y Bourdaud, G Bourrion, O Boyer, B Bruna, E Butterworth, J Caines, H Aldagalan, DCD Capitani, GP Carcagno, Y Diaz, AC Cherney, M Balbastre, GC Cormier, TM Mendez, LC Delagrange, H Del Franco, M Dialinas, M Di Nezza, P Donoghue, A Elnimr, M Enokizono, A Estienne, M Faivre, J Fantoni, A Fichera, F Foglio, B Fresneau, S Fujita, J Furget, C Gadrat, S Garishvili, I Germain, M Giudice, N Gorbunov, Y Grimaldi, A Guardone, N Guernane, R Hadjidakis, C Hamblen, J Harris, JW Hasch, D Heinz, M Hille, PT Hornback, D Ichou, R Jacobs, P Jangal, S Jayananda, K Klay, JL Knospe, AG Kox, S Kral, J Laloux, P LaPointe, S La Rocca, P Lewis, S Li, Q Librizzi, F Don, DM Martashvili, I Mayes, B Milletto, T Muccifora, V Muller, H Muraz, JF Nattrass, C Noto, F Novitzky, N Odyniec, G Orlandi, A Palmeri, A Pappalardo, GS Pavlinov, A Pesci, W Petrov, V Petta, C Pichot, P Pinsky, L Ploskon, M Pompei, F Pulvirenti, A Putschke, J Pruneau, CA Rak, J Rasson, J Read, KF Real, JS Reolon, AR Riggi, F Riso, J Ronchetti, F Roy, C Roy, D Salemi, M Salur, S Sharma, M Silvermyr, D Smirnov, N Soltz, R Sparti, V Stutzmann, JS Symons, TJM Martinez, AT Tarini, L Thomen, R Timmins, A van Leeuwen, M Vieira, R Viticchie, A Voloshin, S Wang, D Wang, Y Ward, RM AF Allen, J. Awes, T. Badala, A. Baumgart, S. Bellwied, R. Benhabib, L. Bernard, C. Bianchi, N. Blanco, F. Bortoli, Y. Bourdaud, G. Bourrion, O. Boyer, B. Bruna, E. Butterworth, J. Caines, H. Diaz Aldagalan, D. Calvo Capitani, G. P. Carcagno, Y. Diaz, A. Casanova Cherney, M. Balbastre, G. Conesa Cormier, T. M. Mendez, L. Cunqueiro Delagrange, H. Del Franco, M. Dialinas, M. Di Nezza, P. Donoghue, A. Elnimr, M. Enokizono, A. Estienne, M. Faivre, J. Fantoni, A. Fichera, F. Foglio, B. Fresneau, S. Fujita, J. Furget, C. Gadrat, S. Garishvili, I. Germain, M. Giudice, N. Gorbunov, Y. Grimaldi, A. Guardone, N. Guernane, R. Hadjidakis, C. Hamblen, J. Harris, J. W. Hasch, D. Heinz, M. Hille, P. T. Hornback, D. Ichou, R. Jacobs, P. Jangal, S. Jayananda, K. Klay, J. L. Knospe, A. G. Kox, S. Kral, J. Laloux, P. LaPointe, S. La Rocca, P. Lewis, S. Li, Q. Librizzi, F. Don, D. Madagodahettige Martashvili, I. Mayes, B. Milletto, T. Muccifora, V. Muller, H. Muraz, J. F. Nattrass, C. Noto, F. Novitzky, N. Odyniec, G. Orlandi, A. Palmeri, A. Pappalardo, G. S. Pavlinov, A. Pesci, W. Petrov, V. Petta, C. Pichot, P. Pinsky, L. Ploskon, M. Pompei, F. Pulvirenti, A. Putschke, J. Pruneau, C. A. Rak, J. Rasson, J. Read, K. F. Real, J. S. Reolon, A. R. Riggi, F. Riso, J. Ronchetti, F. Roy, C. Roy, D. Salemi, M. Salur, S. Sharma, M. Silvermyr, D. Smirnov, N. Soltz, R. Sparti, V. Stutzmann, J. -S. Symons, T. J. M. Tarazona Martinez, A. Tarini, L. Thomen, R. Timmins, A. van Leeuwen, M. Vieira, R. Viticchie, A. Voloshin, S. Wang, D. Wang, Y. Ward, R. M. TI Performance of prototypes for the ALICE electromagnetic calorimeter SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Electromagnetic calorimeter; Sampling calorimeter; Energy resolution; Position resolution; Hadron rejection factor AB The performance of prototypes for the ALICE electromagnetic sampling calorimeter has been studied in test beam measurements at FNAL and CERN. A 4 x 4 array of final design modules showed an energy resolution of about 11%/root E(GeV) circle plus 1.7% with a uniformity of the response to electrons of 1% and a good linearity in the energy range from 10 to 100 GeV. The electromagnetic shower position resolution was found to be described by 1.5 min circle plus 5.3 mm/root E(GeV). For an electron identification efficiency of 90% a hadron rejection factor of >600 was obtained. (C) 2009 Elsevier B.V. All rights reserved. C1 [Allen, J.; Bianchi, N.; Capitani, G. P.; Diaz, A. Casanova; Balbastre, G. Conesa; Mendez, L. Cunqueiro; Del Franco, M.; Di Nezza, P.; Fantoni, A.; Hasch, D.; Muccifora, V.; Orlandi, A.; Pesci, W.; Reolon, A. R.; Ronchetti, F.; Vieira, R.; Viticchie, A.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Jacobs, P.; Odyniec, G.; Ploskon, M.; Rasson, J.; Salur, S.; Symons, T. J. M.; van Leeuwen, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Blanco, F.; Giudice, N.; Guardone, N.; La Rocca, P.; Noto, F.; Petta, C.; Pulvirenti, A.; Riggi, F.] Univ Catania, Dipartimento Fis & Astron, I-95123 Catania, Italy. [Badala, A.; Blanco, F.; Fichera, F.; Giudice, N.; Grimaldi, A.; Guardone, N.; La Rocca, P.; Librizzi, F.; Noto, F.; Palmeri, A.; Pappalardo, G. S.; Petta, C.; Pulvirenti, A.; Riggi, F.; Salemi, M.; Sparti, V.] Sezione Ist Nazl Fis Nucl, I-95123 Catania, Italy. [Bellwied, R.; Cormier, T. M.; Elnimr, M.; LaPointe, S.; Li, Q.; Pavlinov, A.; Petrov, V.; Pompei, F.; Pruneau, C. A.; Riso, J.; Sharma, M.; Tarini, L.; Timmins, A.; Voloshin, S.] Wayne State Univ, Detroit, MI 48202 USA. [Muller, H.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland. [Bernard, C.; Bourrion, O.; Boyer, B.; Carcagno, Y.; Faivre, J.; Foglio, B.; Furget, C.; Gadrat, S.; Guernane, R.; Kox, S.; Muraz, J. F.; Real, J. S.] Univ Grenoble 1, LPSC, IN2P3, CNRS,INPG, F-38026 Grenoble, France. [Blanco, F.; Don, D. Madagodahettige; Mayes, B.; Pinsky, L.] Univ Houston, Houston, TX 77204 USA. [Kral, J.; Novitzky, N.; Rak, J.] HIP, Jyvaskyla 40351, Finland. [Kral, J.; Novitzky, N.; Rak, J.] Univ Jyvaskyla, SF-40351 Jyvaskyla, Finland. [Garishvili, I.; Hamblen, J.; Hornback, D.; Martashvili, I.; Nattrass, C.; Read, K. F.] Univ Tennessee, Knoxville, TN 37996 USA. [Soltz, R.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Benhabib, L.; Bortoli, Y.; Bourdaud, G.; Delagrange, H.; Dialinas, M.; Estienne, M.; Fresneau, S.; Germain, M.; Hadjidakis, C.; Ichou, R.; Laloux, P.; Milletto, T.; Pichot, P.; Roy, D.; Stutzmann, J. -S.] Univ Nantes, Ecole Mines Nantes, SUBATECH, CNRS,IN2P3, F-44307 Nantes 3, France. [Baumgart, S.; Bruna, E.; Caines, H.; Harris, J. W.; Heinz, M.; Hille, P. T.; Knospe, A. G.; Nattrass, C.; Putschke, J.; Smirnov, N.] Yale Univ, New Haven, CT 06511 USA. [Awes, T.; Enokizono, A.; Silvermyr, D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Butterworth, J.; Cherney, M.; Fujita, J.; Gorbunov, Y.; Jayananda, K.; Thomen, R.] Creighton Univ, Omaha, NE 68178 USA. [La Rocca, P.] Museo Stor Fis, I-00184 Rome, Italy. [La Rocca, P.] Ctr Studi & Ric Enrico Fermi, I-00184 Rome, Italy. [Donoghue, A.; Klay, J. L.; Lewis, S.; Ward, R. M.] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA. [Jangal, S.; Roy, C.] Univ Strasbourg, IPHC, CNRS, IN2P3, F-67037 Strasbourg 2, France. [Diaz Aldagalan, D. Calvo] Univ Valencia, Valencia 46010, Spain. [Tarazona Martinez, A.] Univ Politecn Valencia, Valencia 46022, Spain. [Wang, D.; Wang, Y.] Huazhong Normal Univ, Wuhan 430079, Peoples R China. RP Hasch, D (reprint author), Ist Nazl Fis Nucl, Lab Nazl Frascati, POB 13, I-00044 Frascati, Italy. EM delia.hasch@lnf.infn.it RI Petta, Catia/A-7023-2012; Voloshin, Sergei/I-4122-2013; Calvo, David/H-9834-2015; Nattrass, Christine/J-6752-2016; OI Riggi, Francesco/0000-0002-0030-8377; Nattrass, Christine/0000-0002-8768-6468; Read, Kenneth/0000-0002-3358-7667; van Leeuwen, Marco/0000-0002-5222-4888; Noto, Francesco/0000-0003-2926-7342 FU Helsinki Institute of Physics; Academy of Finnland; 'Region Pays de Loire'; 'Region Alsace'; 'Region Auvergne'; CEA, France; Istituto Nazionale di Fisica Nucleare (INFN) of Italy; Office of Nuclear Physics; United States National Science Foundation; [CNRS/IN2P3/INPG] FX We gratefully acknowledge the CERN and the FNAL accelerator devisions for the good working conditions in the testbeam facilities. We would like to thank all engineers and technicians of the participating laboratories for their invaluable contribution to the construction of the EMCal. This work was supported by the Helsinki Institute of Physics and the Academy of Finnland; the French CNRS/IN2P3/INPG, the 'Region Pays de Loire', 'Region Alsace','Region Auvergne' and CEA, France; the Istituto Nazionale di Fisica Nucleare (INFN) of Italy; the Office of Nuclear Physics within the United States DOE Office of Science and the United States National Science Foundation. NR 11 TC 12 Z9 13 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 EI 1872-9576 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 21 PY 2010 VL 615 IS 1 BP 6 EP 13 DI 10.1016/j.nima.2009.12.061 PG 8 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 576MO UT WOS:000276148800002 ER PT J AU Graf, N Lebedev, A Abrams, RJ Akgun, U Aydin, G Baker, W Barnes, PD Bergfeld, T Beverly, L Bujak, A Carey, D Dukes, C Duru, F Feldman, GJ Godley, A Gulmez, E Gunaydin, YO Gustafson, HR Gutay, L Hartouni, E Hanlet, P Hansen, S Heffner, M Johnstone, C Kaplan, D Kamaev, O Kilmer, J Klay, J Kostin, M Lange, D Ling, J Longo, MJ Lu, LC Materniak, C Messier, MD Meyer, H Miller, DE Mishra, SR Nelson, K Nigmanov, T Norman, A Onel, Y Paley, JM Park, HK Penzo, A Peterson, RJ Raja, R Rajaram, D Ratnikov, D Rosenfeld, C Rubin, H Seun, S Solomey, N Soltz, R Swallow, E Schmitt, R Subbarao, P Torun, Y Tope, TE Wilson, K Wright, D Wu, K AF Graf, N. Lebedev, A. Abrams, R. J. Akgun, U. Aydin, G. Baker, W. Barnes, P. D., Jr. Bergfeld, T. Beverly, L. Bujak, A. Carey, D. Dukes, C. Duru, F. Feldman, G. J. Godley, A. Gulmez, E. Gunaydin, Y. O. Gustafson, H. R. Gutay, L. Hartouni, E. Hanlet, P. Hansen, S. Heffner, M. Johnstone, C. Kaplan, D. Kamaev, O. Kilmer, J. Klay, J. Kostin, M. Lange, D. Ling, J. Longo, M. J. Lu, L. C. Materniak, C. Messier, M. D. Meyer, H. Miller, D. E. Mishra, S. R. Nelson, K. Nigmanov, T. Norman, A. Onel, Y. Paley, J. M. Park, H. K. Penzo, A. Peterson, R. J. Raja, R. Rajaram, D. Ratnikov, D. Rosenfeld, C. Rubin, H. Seun, S. Solomey, N. Soltz, R. Swallow, E. Schmitt, R. Subbarao, P. Torun, Y. Tope, T. E. Wilson, K. Wright, D. Wu, K. TI Charged kaon mass measurement using the Cherenkov effect SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Cherenkov effect; Charged kaon mass; RICH detector ID RICH DETECTOR AB The two most recent and precise measurements of the charged kaon mass use X-rays from kaonic atoms and report uncertainties of 14 and 22 ppm yet differ from each other by 122 ppm. We describe the possibility of an independent mass measurement using the measurement of Cherenkov light from a narrow-band beam of kaons, pions, and protons. This technique was demonstrated using data taken opportunistically by the Main Injector Particle Production experiment at Fermi National Accelerator Laboratory which recorded beams of protons, kaons, and pions ranging in momentum from +37 to +63 GeV/c. The measured value is 491.3 +/- 1.7 MeV/c(2), which is within 1.4 sigma of the world average. An improvement of two orders of magnitude in precision would make this technique useful for resolving the ambiguity in the X-ray data and may be achievable in a dedicated experiment. (C) 2010 Elsevier B.V. All rights reserved. C1 [Graf, N.; Messier, M. D.; Paley, J. M.] Indiana Univ, Bloomington, IN 47403 USA. [Swallow, E.] Elmhurst Coll, Elmhurst, IL 60126 USA. [Baker, W.; Beverly, L.; Carey, D.; Hansen, S.; Johnstone, C.; Kilmer, J.; Kostin, M.; Meyer, H.; Raja, R.; Schmitt, R.; Tope, T. E.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Lebedev, A.; Feldman, G. J.; Seun, S.] Harvard Univ, Cambridge, MA 02138 USA. [Hanlet, P.; Kaplan, D.; Kamaev, O.; Ratnikov, D.; Rubin, H.; Solomey, N.; Torun, Y.] IIT, Chicago, IL 60616 USA. [Barnes, P. D., Jr.; Hartouni, E.; Heffner, M.; Klay, J.; Lange, D.; Soltz, R.; Wright, D.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Bujak, A.; Gutay, L.; Miller, D. E.] Purdue Univ, W Lafayette, IN 47907 USA. [Peterson, R. J.] Univ Colorado, Boulder, CO 80309 USA. [Akgun, U.; Aydin, G.; Duru, F.; Gulmez, E.; Gunaydin, Y. O.; Onel, Y.; Penzo, A.] Univ Iowa, Iowa City, IA 52242 USA. [Abrams, R. J.; Gustafson, H. R.; Longo, M. J.; Nigmanov, T.; Park, H. K.; Rajaram, D.; Subbarao, P.] Univ Michigan, Ann Arbor, MI 48109 USA. [Bergfeld, T.; Godley, A.; Ling, J.; Mishra, S. R.; Rosenfeld, C.; Wilson, K.; Wu, K.] Univ S Carolina, Columbia, SC 29201 USA. [Dukes, C.; Lu, L. C.; Materniak, C.; Nelson, K.; Norman, A.] Univ Virginia, Charlottesville, VA 22904 USA. [Gulmez, E.] Bogazici Univ, Istanbul, Turkey. RP Graf, N (reprint author), Indiana Univ, Bloomington, IN 47403 USA. EM ngraf@umail.iu.edu RI Gunaydin, Yusuf/F-7300-2014; Lu, Lanchun/E-3551-2011; Gulmez, Erhan/P-9518-2015; Ling, Jiajie/I-9173-2014; OI Hartouni, Edward/0000-0001-9869-4351; Gunaydin, Yusuf/0000-0002-0514-6936; Gulmez, Erhan/0000-0002-6353-518X; Ling, Jiajie/0000-0003-2982-0670; Norman, Andrew/0000-0001-8572-956X; Torun, Yagmur/0000-0003-2336-6585 FU United States Department of Energy [DE-AC02-07CH11359] FX Fermilab is operated by Fermi Research Alliance, LLC under Contract no. DE-AC02-07CH11359 with the United States Department of Energy. NR 14 TC 6 Z9 6 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 21 PY 2010 VL 615 IS 1 BP 27 EP 32 DI 10.1016/j.nima.2009.12.082 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 576MO UT WOS:000276148800004 ER PT J AU Gehman, VM Elliott, SR Mei, DM AF Gehman, V. M. Elliott, S. R. Mei, D. -M. TI Systematic effects in pulse shape analysis of HPGe detector signals for 0 nu beta beta SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Neutrinoless double-beta decay; Pulse shape analysis; Germanium detectors ID DOUBLE-BETA-DECAY; GRAN-SASSO 1990-2003; GE-76 AB Pulse shape analysis is an important background reduction and signal identification technique for next generation of Ge-76 0 nu beta beta experiments. We present a study of the systematic uncertainties in one such parametric pulse-shape analysis technique for separating multi-site background from single-site signal events. We examined systematic uncertainties for events in full-energy gamma peaks (predominantly multi-site), double-escape peaks (predominantly single-site) and the Compton continuum near Q(beta beta) (which will be the dominant background for most 0 nu beta beta searches). In short, we find total (statistical plus systematic) fractional uncertainties in the pulse shape cut survival probabilities of: 6.6%, 1.5% and 3.8% for double-escape, continuum and gamma-ray events. respectively. Published by Elsevier B.V. C1 [Gehman, V. M.; Elliott, S. R.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Gehman, V. M.] Univ Washington, Dept Phys, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Mei, D. -M.] Univ S Dakota, Dept Phys, Vermillion, SD 57069 USA. RP Gehman, VM (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM vmg@lanl.gov FU Los Alamos National Laboratory's Laboratory-Directed Research and Development [LA-UR 09-04235] FX This work was supported by Los Alamos National Laboratory's Laboratory-Directed Research and Development program and released under report number LA-UR 09-04235. The authors would like to thank Kareem Kazkaz and John Wilkerson for careful reading and constructive comments, as well as the entire MAJORANA collaboration for their support in the preparation of this article. NR 31 TC 2 Z9 2 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 21 PY 2010 VL 615 IS 1 BP 83 EP 92 DI 10.1016/j.nima.2010.01.033 PG 10 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 576MO UT WOS:000276148800014 ER PT J AU Swinhoe, MT Iwamoto, T Tamura, T AF Swinhoe, M. T. Iwamoto, T. Tamura, T. TI Determination of Pu-242 by correlation with Pu-239 only SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE Plutonium isotopic composition; Pu-242 correlation; High resolution gamma spectroscopy; Nuclear safeguards AB Correlations are used to determine the Pu-242 content of material using high resolution gamma measurements on the other plutonium isotopes because Pu-242 itself has no practically detectable gamma emission lines. This paper presents an improved correlation that is particularly useful because, unlike some previous correlations, no prior knowledge of the reactor type or initial enrichment is required. This correlation has been shown to perform well over a range of plutonium from commercial BWR and PWR reactors. The agreement of the calculated Pu-242 values with IDMS values is within 1% for Pu-239 content of less than 70% and within 4% for Pu-239 content of less than 80%. This simple form of the correlation is somewhat surprising given the complex behavior of 239/240 and 242/240 ratios. (C) 2010 Elsevier B.V. All rights reserved. C1 [Swinhoe, M. T.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Iwamoto, T.; Tamura, T.] Japan Nucl Fuels Ltd, Rokkasho Reproc Plant, Aomori, Japan. RP Swinhoe, MT (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM Swinhoe@lanl.gov OI Swinhoe, Martyn/0000-0002-7620-4654 NR 5 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 21 PY 2010 VL 615 IS 1 BP 136 EP 137 DI 10.1016/j.nima.2010.01.003 PG 2 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 576MO UT WOS:000276148800020 ER PT J AU Butter, D AF Butter, Daniel TI Background field formalism for chiral matter and gauge fields conformally coupled to supergravity SO NUCLEAR PHYSICS B LA English DT Article DE Supergravity; Superspace; Background field formalism ID COVARIANT SUPERGRAPHS AB We expand the generic model involving chiral matter, super-Yang-Mills gauge fields, and supergravity to second order in the gravity and gauge prepotentials in a manifestly covariant and conformal way. Such a class of models includes conventional chiral matter coupled to supergravity via a conformal compensator. This is a first step toward calculating one-loop effects in supergravity in a way that does not require a perturbative expansion in the inverse Planck scale or a recourse to component level calculations to handle the coupling of the Kahler potential to the gravity sector. We also consider a more restrictive model involving a linear superfield in the role of the conformal compensator and investigate the similarities it has to the dual chiral model. (C) 2009 Elsevier B.V. All rights reserved. C1 [Butter, Daniel] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Butter, Daniel] Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA. RP Butter, D (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM dbutter@berkeley.edu NR 17 TC 6 Z9 6 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD MAR 21 PY 2010 VL 828 IS 1-2 BP 233 EP 272 DI 10.1016/j.nuclphysb.2009.11.018 PG 40 WC Physics, Particles & Fields SC Physics GA 544QK UT WOS:000273673600007 ER PT J AU Tremblay, AE Tan, N Whittle, E Hodgson, DJ Dawson, B Buist, PH Shanklin, J AF Tremblay, Amy E. Tan, Nigel Whittle, Ed Hodgson, Derek J. Dawson, Brian Buist, Peter H. Shanklin, John TI Stereochemistry of 10-sulfoxidation catalyzed by a soluble Delta(9) desaturase SO ORGANIC & BIOMOLECULAR CHEMISTRY LA English DT Article ID STEAROYL-ACP DESATURASE; ACYL CARRIER PROTEIN; ENZYMATIC OXIDATION; FATTY-ACIDS; SULFOXIDES; MODELS; ANALOG; SHIFT; PROBE AB The stereochemistry of castor stearoyl-ACP Delta(9) desaturase-mediated 10-sulfoxidation has been determined. This was accomplished by F-19 NMR analysis of a fluorine-tagged product, 18-fluoro-10-thiastearoyl ACP S-oxide, in combination with a chiral solvating agent, (R)-AMA. Sulfoxidation proceeds with the same stereoselectivity as hydrogen removal from the parent stearoyl substrate. These data validate the use of thia probes to determine the stereochemistry and cryptoregiochemistry of desaturase-mediated oxidations. C1 [Tremblay, Amy E.; Tan, Nigel; Buist, Peter H.] Carleton Univ, Dept Chem, Ottawa, ON K1S 5B6, Canada. [Whittle, Ed; Shanklin, John] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. [Hodgson, Derek J.; Dawson, Brian] Hlth Canada, Biol Res Ctr, Biol & Genet Therapies Directorate, Ottawa, ON K1A 0L2, Canada. RP Buist, PH (reprint author), Carleton Univ, Dept Chem, 1125 Colonel Dr, Ottawa, ON K1S 5B6, Canada. FU NSERC [PGS1, OGP-2528]; Office of Basic Energy Sciences of the United States Department of Energy FX This work was supported by an NSERC PGS1 (to A. T), NSERC USRA(toN. T.); N. S. E. R. C. GrantOGP-2528 (to P. H. B.); by the Office of Basic Energy Sciences of the United States Department of Energy (to J. S.). We are grateful Dr Jose Abad (IIQAB, CSIC, Barcelona, SP) for initially providing us with samples of (S)-and (R)-AMA and procedures for their preparation. NR 30 TC 3 Z9 3 U1 2 U2 7 PU ROYAL SOC CHEMISTRY PI CAMBRIDGE PA THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND SN 1477-0520 J9 ORG BIOMOL CHEM JI Org. Biomol. Chem. PD MAR 21 PY 2010 VL 8 IS 6 BP 1322 EP 1328 DI 10.1039/b921753c PG 7 WC Chemistry, Organic SC Chemistry GA 564BU UT WOS:000275187000014 PM 20204203 ER PT J AU Gaul, EW Martinez, M Blakeney, J Jochmann, A Ringuette, M Hammond, D Borger, T Escamilla, R Douglas, S Henderson, W Dyer, G Erlandson, A Cross, R Caird, J Ebbers, C Ditmire, T AF Gaul, Erhard W. Martinez, Mikael Blakeney, Joel Jochmann, Axel Ringuette, Martin Hammond, Doug Borger, Ted Escamilla, Ramiro Douglas, Skylar Henderson, Watson Dyer, Gilliss Erlandson, Alvin Cross, Rick Caird, John Ebbers, Christopher Ditmire, Todd TI Demonstration of a 1.1 petawatt laser based on a hybrid optical parametric chirped pulse amplification/mixed Nd:glass amplifier SO APPLIED OPTICS LA English DT Article ID PLASMA ACCELERATORS; ENERGY; FUSION; OPTIMIZATION; GENERATION; BEAMS AB We present the design and performance of the Texas Petawatt Laser, which produces a 186 J 167 fs pulse based on the combination of optical parametric chirped pulse amplification (OPCPA) and mixed Nd:glass amplification. OPCPA provides the majority of the gain and is used to broaden and shape the seed spectrum, while amplification in Nd: glass accounts for >99% of the final pulse energy. Compression is achieved with highly efficient multilayer dielectric gratings. (C) 2010 Optical Society of America C1 [Gaul, Erhard W.; Martinez, Mikael; Blakeney, Joel; Jochmann, Axel; Ringuette, Martin; Hammond, Doug; Borger, Ted; Escamilla, Ramiro; Douglas, Skylar; Henderson, Watson; Dyer, Gilliss; Ditmire, Todd] Univ Texas Austin, Texas Ctr High Intens Laser Sci, Austin, TX 78712 USA. [Erlandson, Alvin; Cross, Rick; Caird, John; Ebbers, Christopher] Lawrence Livermore Natl Lab, Natl Ignit Facil Directorate, Livermore, CA 94550 USA. RP Gaul, EW (reprint author), Univ Texas Austin, Texas Ctr High Intens Laser Sci, 1 Univ Stn,Mail Stop C1510, Austin, TX 78712 USA. EM gaul@physics.utexas.edu RI Jochmann, Axel/B-7616-2013 FU National Nuclear Security Administration [DE-FC52-03NA00156] FX This work was supported by the National Nuclear Security Administration under cooperative agreement DE-FC52-03NA00156. NR 28 TC 103 Z9 110 U1 0 U2 28 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1559-128X EI 2155-3165 J9 APPL OPTICS JI Appl. Optics PD MAR 20 PY 2010 VL 49 IS 9 BP 1676 EP 1681 DI 10.1364/AO.49.001676 PG 6 WC Optics SC Optics GA 571HS UT WOS:000275743500027 PM 20300167 ER PT J AU Whalen, D Hueckstaedt, RM McConkie, TO AF Whalen, Daniel Hueckstaedt, Robert M. McConkie, Thomas O. TI RADIATIVE AND KINETIC FEEDBACK BY LOW-MASS PRIMORDIAL STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE cosmology: theory; early universe; galaxies: high-redshift; H II regions; intergalactic medium; radiative transfer ID POPULATION-III-STARS; 1ST SUPERNOVA EXPLOSIONS; HII-REGIONS; IONIZATION FRONTS; COSMOLOGICAL REIONIZATION; COSMIC REIONIZATION; MOLECULAR CLOUDS; EARLY UNIVERSE; HIGH-REDSHIFT; CDM UNIVERSE AB Ionizing UV radiation and supernova (SN) flows amidst clustered minihalos at high redshift regulated the rise of the first stellar populations in the universe. Previous studies have addressed the effects of very massive primordial stars on the collapse of nearby halos into new stars, but the absence of the odd-even nucleosynthetic signature of pair-instability SNe in ancient metal-poor stars suggests that Population III stars may have been less than 100 M(circle dot). We extend our earlier survey of local UV feedback on star formation to 25-80 M(circle dot) stars and include kinetic feedback by SNe for 25-40 M(circle dot) stars. We find radiative feedback to be relatively uniform over this mass range, primarily because the larger fluxes of more massive stars are offset by their shorter lifetimes. Our models demonstrate that prior to the rise of global UV backgrounds, Lyman-Werner (LW) photons from nearby stars cannot prevent halos from forming new stars. These calculations also reveal that violent dynamical instabilities can erupt in the UV radiation front enveloping a primordial halo, but that they ultimately have no effect on the formation of a star. Finally, our simulations suggest that relic H II regions surrounding partially evaporated halos may expel LW backgrounds at lower redshifts, allowing stars to form that were previously suppressed. We provide fits to radiative and kinetic feedback on star formation for use in both semianalytic models and numerical simulations. C1 [Whalen, Daniel] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. [Whalen, Daniel; Hueckstaedt, Robert M.; McConkie, Thomas O.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [McConkie, Thomas O.] Brigham Young Univ, Dept Phys & Astron, Provo, UT 84602 USA. RP Whalen, D (reprint author), Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. EM dwhalen@lanl.gov FU U.S. Department of Energy [DE-AC52-06NA25396] FX This work was carried out under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract DE-AC52-06NA25396. The simulations were performed on the open cluster Coyote at Los Alamos National Laboratory. NR 66 TC 30 Z9 30 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 2010 VL 712 IS 1 BP 101 EP 111 DI 10.1088/0004-637X/712/1/101 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564NX UT WOS:000275222900009 ER PT J AU Yu, C Li, H Li, S Lubow, SH Lin, DNC AF Yu, C. Li, H. Li, S. Lubow, S. H. Lin, D. N. C. TI TYPE I PLANET MIGRATION IN NEARLY LAMINAR DISKS: LONG-TERM BEHAVIOR SO ASTROPHYSICAL JOURNAL LA English DT Article DE accretion, accretion disks; hydrodynamics; methods: numerical; protoplanetary disks ID ROSSBY-WAVE INSTABILITY; THIN ACCRETION DISKS; PROTOPLANETARY DISKS; GIANT PLANETS; GAP FORMATION; PROPAGATION; COROTATION; TURBULENCE; TORQUES; NEBULA AB We carry out two-dimensional high-resolution numerical simulations of type I planet migration with different disk viscosities. We find that the planet migration is strongly dependent on disk viscosities. Two kinds of density wave damping mechanisms are discussed. Accordingly, the angular momentum transport can be either viscosity dominated or shock dominated, depending on the disk viscosities. The long-term migration behavior is different as well. Influences of the Rossby vortex instability on planet migration are also discussed. In addition, we investigate very weak shock generation in inviscid disks by small mass planets and compare the results with prior analytic results. C1 [Yu, C.] Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China. [Yu, C.; Li, H.; Li, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Lubow, S. H.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Lin, D. N. C.] Univ Calif Santa Cruz, UCO, Lick Observ, Santa Cruz, CA 95064 USA. RP Yu, C (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Astron Observ, Kunming 650011, Peoples R China. EM congyu@lanl.gov; hli@lanl.gov; sli@lanl.gov; lubow@stsci.edu; lin@ucolick.org OI Li, Shengtai/0000-0002-4142-3080 NR 31 TC 31 Z9 32 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 2010 VL 712 IS 1 BP 198 EP 208 DI 10.1088/0004-637X/712/1/198 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564NX UT WOS:000275222900018 ER PT J AU Hayden, BT Garnavich, PM Kessler, R Frieman, JA Jha, SW Bassett, B Cinabro, D Dilday, B Kasen, D Marriner, J Nichol, RC Riess, AG Sako, M Schneider, DP Smith, M Sollerman, J AF Hayden, Brian T. Garnavich, Peter M. Kessler, Richard Frieman, Joshua A. Jha, Saurabh W. Bassett, Bruce Cinabro, David Dilday, Benjamin Kasen, Daniel Marriner, John Nichol, Robert C. Riess, Adam G. Sako, Masao Schneider, Donald P. Smith, Mathew Sollerman, Jesper TI THE RISE AND FALL OF TYPE Ia SUPERNOVA LIGHT CURVES IN THE SDSS-II SUPERNOVA SURVEY SO ASTROPHYSICAL JOURNAL LA English DT Article DE methods: data analysis; supernovae: general; white dwarfs ID DIGITAL SKY SURVEY; HUBBLE-SPACE-TELESCOPE; HIGH-REDSHIFT SUPERNOVAE; DELAYED-DETONATION MODEL; LEGACY SURVEY; DARK ENERGY; COSMOLOGICAL PARAMETERS; STAR-FORMATION; HOST GALAXIES; MAXIMUM LIGHT AB We analyze the rise and fall times of Type Ia supernova (SN Ia) light curves discovered by the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. From a set of 391 light curves k-corrected to the rest-frame B and V bands, we find a smaller dispersion in the rising portion of the light curve compared to the decline. This is in qualitative agreement with computer models which predict that variations in radioactive nickel yield have less impact on the rise than on the spread of the decline rates. The differences we find in the rise and fall properties suggest that a single "stretch" correction to the light curve phase does not properly model the range of SN Ia light curve shapes. We select a subset of 105 light curves well observed in both rise and fall portions of the light curves and develop a "2-stretch" fit algorithm which estimates the rise and fall times independently. We find the average time from explosion to B-band peak brightness is 17.38 +/- 0.17 days, but with a spread of rise times which range from 13 days to 23 days. Our average rise time is shorter than the 19.5 days found in previous studies; this reflects both the different light curve template used and the application of the 2-stretch algorithm. The SDSS-II supernova set and the local SNe Ia with well-observed early light curves show no significant differences in their average rise-time properties. We find that slow-declining events tend to have fast rise times, but that the distribution of rise minus fall time is broad and single peaked. This distribution is in contrast to the bimodality in this parameter that was first suggested by Strovink from an analysis of a small set of local SNe Ia. We divide the SDSS-II sample in half based on the rise minus fall value, t(r) - t(f) <= 2 days and t(r) - t(f) > 2 days, to search for differences in their host galaxy properties and Hubble residuals; we find no difference in host galaxy properties or Hubble residuals in our sample. C1 [Hayden, Brian T.; Garnavich, Peter M.] Univ Notre Dame, Notre Dame, IN 46556 USA. [Kessler, Richard; Frieman, Joshua A.] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Kessler, Richard] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Frieman, Joshua A.] Univ Chicago, Dept Phys & Astron, Chicago, IL 60637 USA. [Frieman, Joshua A.; Marriner, John] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA. [Jha, Saurabh W.] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA. [Jha, Saurabh W.; Dilday, Benjamin] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Bassett, Bruce; Smith, Mathew] Univ Cape Town, Dept Math & Appl Math, ZA-7701 Rondebosch, South Africa. [Bassett, Bruce] S African Astron Observ, ZA-7935 Cape Town, South Africa. [Cinabro, David] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48202 USA. [Kasen, Daniel] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Nichol, Robert C.] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England. [Riess, Adam G.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [Riess, Adam G.] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Sako, Masao] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. [Schneider, Donald P.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Sollerman, Jesper] Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen O, Denmark. [Sollerman, Jesper] Stockholm Univ, Dept Astron, Oskar Klein Ctr, S-10691 Stockholm, Sweden. RP Hayden, BT (reprint author), Univ Notre Dame, 225 Nieuwland Sci Hall, Notre Dame, IN 46556 USA. OI Bassett, Bruce/0000-0001-7700-1069; Sollerman, Jesper/0000-0003-1546-6615 FU Alfred P. Sloan Foundation; National Science Foundation; U.S. Department of Energy [DE-FG02-08ER41562]; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England; W. M. Keck Foundation; Danish National Research Foundation; The Swedish Research Council; Knut and Alice Wallenberg Foundation; U.S. National Science Foundation [AST-0507475] FX Funding for the creation and distribution of the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web site is http://www.sdss.org/. The SDSS is managed by the Astrophysical Research Consortium for the Participating Institutions. The Participating Institutions are the American Museum of Natural History, Astrophysical Institute Potsdam, University of Basel, Cambridge University, Case Western Reserve University, University of Chicago, Drexel University, Fermilab, the Institute for Advanced Study, the Japan Participation Group, Johns Hopkins University, the Joint Institute for Nuclear Astrophysics, the Kavli Institute for Particle Astrophysics and Cosmology, the Korean Scientist Group, the Chinese Academy of Sciences (LAMOST), Los Alamos National Laboratory, the Max-Planck Institute for Astronomy (MPA), the Max-Planck-Institute for Astrophysics (MPiA), NewMexico State University, Ohio State University, University of Pittsburgh, University of Portsmouth, Princeton University, the United States Naval Observatory, and the University of Washington. This work is based in part on observations made at the following telescopes. The Hobby-Eberly Telescope (HET) is a joint project of the University of Texas at Austin, the Pennsylvania State University, Stanford University, Ludwig-Maximillians Universitat Munchen, and Georg-August-Universitat Gottingen. The HET is named in honor of its principal benefactors, William P. Hobby and Robert E. Eberly. The Marcario Low-resolution Spectrograph is named for Mike Marcario of High Lonesome Optics, who fabricated several optical elements for the instrument but died before its completion; it is a joint project of the Hobby-Eberly Telescope partnership and the Instituto de Astronomia de la Universidad Nacional Autonoma de Mexico. The Apache Point Observatory 3.5 m telescope is owned and operated by the Astrophysical Research Consortium. We thank the observatory director, Suzanne Hawley, and site manager, Bruce Gillespie, for their support of this project. The Subaru Telescope is operated by the National Astronomical Observatory of Japan. The William Herschel Telescope is operated by the Isaac Newton Group, and the Nordic Optical Telescope is operated jointly by Denmark, Finland, Iceland, Norway, and Sweden, both on the island of La Palma in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. Observations at the ESO New Technology Telescope at La Silla Observatory were made under program IDs 77.A-0437, 78.A-0325, and 79.A-0715. Kitt Peak National Observatory, National Optical Astronomy Observatory, is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation. The WIYN Observatory is a joint facility of the University of Wisconsin-Madison, Indiana University, Yale University, and the National Optical Astronomy Observatories. The W. M. Keck Observatory is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W. M. Keck Foundation.; The South African Large Telescope of the South African Astronomical Observatory is operatd by a partnership between the National Research Foundation of South Africa, Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences, the Hobby-Eberly Telescope Board, Rutgers University, Georg-August-Universitat Gottingen, University of Wisconsin-Madison, University of Canterbury, University of North Carolina-Chapel Hill, Dartmouth College, Carnegie Mellon University, and the United Kingdom SALT consortium. The Italian Telescopio Nazionale Galileo is operated on the island of La Palma by the Fundacion Galileo Galilei of the Instituto Nazionale di Astrofisica at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. DARK is funded by the Danish National Research Foundation. The Oskar Klein Centre is funded by The Swedish Research Council. Jesper Sollerman is a Royal Academy of Sciences Research Fellow supported by a grant from the Knut and Alice Wallenberg Foundation. This research is supported at Rutgers University by the US Department of Energy grant DE-FG02-08ER41562 (PI: S.W.J). Work is partially supported by U.S. National Science Foundation through grant AST-0507475 (ESSENCE). NR 97 TC 58 Z9 58 U1 0 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 2010 VL 712 IS 1 BP 350 EP 366 DI 10.1088/0004-637X/712/1/350 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564NX UT WOS:000275222900030 ER PT J AU Abdo, AA Ackermann, M Ajello, M Asano, K Atwood, WB Axelsson, M Baldini, L Ballet, J Barbiellini, G Bastieri, D Baughman, BM Bechtol, K Bellazzini, R Berenji, B Bhat, PN Bissaldi, E Blandford, RD Bloom, ED Bonamente, E Borgland, AW Bouvier, A Bregeon, J Brez, A Briggs, MS Brigida, M Bruel, P Burgess, JM Burnett, TH Buson, S Caliandro, GA Cameron, RA Caraveo, PA Carrigan, S Casandjian, JM Cecchi, C Celik, O Chaplin, V Charles, E Chekhtman, A Chiang, J Ciprini, S Claus, R Cohen-Tanugi, J Cominsky, LR Connaughton, V Conrad, J Cutini, S Dermer, CD de Angelis, A de Palma, F Digel, SW Silva, EDE Drell, PS Dubois, R Dumora, D Farnier, C Favuzzi, C Fegan, SJ Fishman, G Focke, WB Fortin, P Frailis, M Fukazawa, Y Funk, S Fusco, P Gargano, F Gasparrini, D Gehrels, N Germani, S Giebels, B Giglietto, N Giommi, P Giordano, F Glanzman, T Godfrey, G Granot, J Grenier, IA Grondin, MH Grove, JE Guillemot, L Guiriec, S Hanabata, Y Harding, AK Hayashida, M Haynes, RH Hays, E Horan, D Hughes, RE Jackson, MS Johannesson, G Johnson, AS Johnson, WN Kamae, T Katagiri, H Kataoka, J Kawai, N Kerr, M Kippen, RM Knodlseder, J Kocevski, D Kocian, ML Komin, N Kouveliotou, C Kuehn, F Kuss, M Lande, J Latronico, L Lemoine-Goumard, M Longo, F Loparco, F Lott, B Lovellette, MN Lubrano, P Madejski, GM Makeev, A Mazziotta, MN McBreen, S McEnery, JE McGlynn, S Meegan, C Meszaros, P Meurer, C Michelson, PF Mitthumsiri, W Mizuno, T Moiseev, AA Monte, C Monzani, ME Moretti, E Morselli, A Moskalenko, IV Murgia, S Nakamori, T Nolan, PL Norris, JP Nuss, E Ohno, M Ohsugi, T Omodei, N Orlando, E Ormes, JF Paciesas, WS Paneque, D Panetta, JH Parent, D Pelassa, V Pepe, M Pesce-Rollins, M Piron, F Porter, TA Preece, R Raino, S Rando, R Razzano, M Razzaque, S Reimer, A Reimer, O Reposeur, T Ripken, J Ritz, S Rochester, LS Rodriguez, AY Roth, M Ryde, F Sadrozinski, HFW Sanchez, D Sander, A Parkinson, PMS Scargle, JD Schalk, TL Sgro, C Siskind, EJ Smith, DA Smith, PD Spandre, G Spinelli, P Stamatikos, M Strickman, MS Suson, DJ Tagliaferri, G Tajima, H Takahashi, H Tanaka, T Thayer, JB Thayer, JG Thompson, DJ Tibaldo, L Toma, K Torres, DF Tosti, G Tramacere, A Troja, E Uchiyama, Y Usher, TL van der Horst, AJ Vasileiou, V Vilchez, N Vitale, V von Kienlin, A Waite, AP Wang, P Wilson-Hodge, C Winer, BL Wood, KS Wu, XF Yamazaki, R Ylinen, T Ziegler, M AF Abdo, A. A. Ackermann, M. Ajello, M. Asano, K. Atwood, W. B. Axelsson, M. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. M. Bechtol, K. Bellazzini, R. Berenji, B. Bhat, P. N. Bissaldi, E. Blandford, R. D. Bloom, E. D. Bonamente, E. Borgland, A. W. Bouvier, A. Bregeon, J. Brez, A. Briggs, M. S. Brigida, M. Bruel, P. Burgess, J. M. Burnett, T. H. Buson, S. Caliandro, G. A. Cameron, R. A. Caraveo, P. A. Carrigan, S. Casandjian, J. M. Cecchi, C. Celik, Oe Chaplin, V. Charles, E. Chekhtman, A. Chiang, J. Ciprini, S. Claus, R. Cohen-Tanugi, J. Cominsky, L. R. Connaughton, V. Conrad, J. Cutini, S. Dermer, C. D. de Angelis, A. de Palma, F. Digel, S. W. do Couto e Silva, E. Drell, P. S. Dubois, R. Dumora, D. Farnier, C. Favuzzi, C. Fegan, S. J. Fishman, G. Focke, W. B. Fortin, P. Frailis, M. Fukazawa, Y. Funk, S. Fusco, P. Gargano, F. Gasparrini, D. Gehrels, N. Germani, S. Giebels, B. Giglietto, N. Giommi, P. Giordano, F. Glanzman, T. Godfrey, G. Granot, J. Grenier, I. A. Grondin, M-H. Grove, J. E. Guillemot, L. Guiriec, S. Hanabata, Y. Harding, A. K. Hayashida, M. Haynes, R. H. Hays, E. Horan, D. Hughes, R. E. Jackson, M. S. Johannesson, G. Johnson, A. S. Johnson, W. N. Kamae, T. Katagiri, H. Kataoka, J. Kawai, N. Kerr, M. Kippen, R. M. Knoedlseder, J. Kocevski, D. Kocian, M. L. Komin, N. Kouveliotou, C. Kuehn, F. Kuss, M. Lande, J. Latronico, L. Lemoine-Goumard, M. Longo, F. Loparco, F. Lott, B. Lovellette, M. N. Lubrano, P. Madejski, G. M. Makeev, A. Mazziotta, M. N. McBreen, S. McEnery, J. E. McGlynn, S. Meegan, C. Meszaros, P. Meurer, C. Michelson, P. F. Mitthumsiri, W. Mizuno, T. Moiseev, A. A. Monte, C. Monzani, M. E. Moretti, E. Morselli, A. Moskalenko, I. V. Murgia, S. Nakamori, T. Nolan, P. L. Norris, J. P. Nuss, E. Ohno, M. Ohsugi, T. Omodei, N. Orlando, E. Ormes, J. F. Paciesas, W. S. Paneque, D. Panetta, J. H. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Piron, F. Porter, T. A. Preece, R. Raino, S. Rando, R. Razzano, M. Razzaque, S. Reimer, A. Reimer, O. Reposeur, T. Ripken, J. Ritz, S. Rochester, L. S. Rodriguez, A. Y. Roth, M. Ryde, F. Sadrozinski, H. F-W. Sanchez, D. Sander, A. Parkinson, P. M. Saz Scargle, J. D. Schalk, T. L. Sgro, C. Siskind, E. J. Smith, D. A. Smith, P. D. Spandre, G. Spinelli, P. Stamatikos, M. Strickman, M. S. Suson, D. J. Tagliaferri, G. Tajima, H. Takahashi, H. Tanaka, T. Thayer, J. B. Thayer, J. G. Thompson, D. J. Tibaldo, L. Toma, K. Torres, D. F. Tosti, G. Tramacere, A. Troja, E. Uchiyama, Y. Usher, T. L. van der Horst, A. J. Vasileiou, V. Vilchez, N. Vitale, V. von Kienlin, A. Waite, A. P. Wang, P. Wilson-Hodge, C. Winer, B. L. Wood, K. S. Wu, X. F. Yamazaki, R. Ylinen, T. Ziegler, M. TI FERMI DETECTION DELAYED GeV EMISSION FROM THE SHORT GAMMA-RAY BURST 081024B SO ASTROPHYSICAL JOURNAL LA English DT Article DE gamma-ray burst: general; gamma-ray burst: individual (GRB 081024B) ID MERGING NEUTRON-STARS; HIGH-ENERGY NEUTRINOS; 28 FEBRUARY 1997; BATSE OBSERVATIONS; PROTONS; SPECTRA; CATALOG AB We report on the detailed analysis of the high-energy extended emission from the short gamma-ray burst (GRB) 081024B detected by the Fermi Gamma-ray Space Telescope. Historically, this represents the first clear detection of temporal extended emission from a short GRB. The light curve observed by the Fermi Gamma-ray Burst Monitor lasts approximately 0.8 s whereas the emission in the Fermi Large Area Telescope lasts for about 3 s. Evidence of longer lasting high-energy emission associated with long bursts has been already reported by previous experiments. Our observations, together with the earlier reported study of the bright short GRB 090510, indicate similarities in the high-energy emission of short and long GRBs and open the path to new interpretations. C1 [Abdo, A. A.; Chekhtman, A.; Dermer, C. D.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Razzaque, S.; Strickman, M. S.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. [Abdo, A. A.; Razzaque, S.] Natl Acad Sci, Natl Res Council Res Associate, Washington, DC 20001 USA. [Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocevski, D.; Kocian, M. L.; Lande, J.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Waite, A. P.; Wang, P.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA. [Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Bouvier, A.; Cameron, R. A.; Charles, E.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Hayashida, M.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocevski, D.; Kocian, M. L.; Lande, J.; Madejski, G. M.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Panetta, J. H.; Reimer, A.; Reimer, O.; Rochester, L. S.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Waite, A. P.; Wang, P.] Stanford Univ, SLAC Natl Accelerator Lab, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA. [Asano, K.] Tokyo Inst Technol, Interact Res Ctr Sci, Meguro, Tokyo 1528551, Japan. [Atwood, W. B.; Porter, T. A.; Ritz, S.; Sadrozinski, H. F-W.; Parkinson, P. M. Saz; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Phys, Santa Cruz, CA 95064 USA. [Atwood, W. B.; Porter, T. A.; Ritz, S.; Sadrozinski, H. F-W.; Parkinson, P. M. Saz; Schalk, T. L.; Ziegler, M.] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Axelsson, M.] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden. [Axelsson, M.; Conrad, J.; Jackson, M. S.; McGlynn, S.; Meurer, C.; Ripken, J.; Ryde, F.; Ylinen, T.] Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden. [Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Omodei, N.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy. [Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Komin, N.; Tibaldo, L.] Univ Paris Diderot, Lab AIM, CEA IRFU, CNRS,Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France. [Barbiellini, G.; Longo, F.; Moretti, E.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy. [Barbiellini, G.; Longo, F.; Moretti, E.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Bastieri, D.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Bastieri, D.; Buson, S.; Carrigan, S.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy. [Baughman, B. M.; Hughes, R. E.; Kuehn, F.; Sander, A.; Smith, P. D.; Stamatikos, M.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA. [Bhat, P. N.; Briggs, M. S.; Burgess, J. M.; Chaplin, V.; Connaughton, V.; Guiriec, S.; Paciesas, W. S.; Preece, R.] Univ Alabama, CSPAR, Huntsville, AL 35899 USA. [Bissaldi, E.; McBreen, S.; Orlando, E.; von Kienlin, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Bonamente, E.; Cecchi, C.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy. [Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy. [Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy. [Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Politecn Bari, I-70126 Bari, Italy. [Brigida, M.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy. [Bruel, P.; Fegan, S. J.; Fortin, P.; Giebels, B.; Horan, D.; Sanchez, D.] Ecole Polytech, CNRS, Lab Leprince Ringuet, IN2P3, F-91128 Palaiseau, France. [Burnett, T. H.; Kerr, M.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Caliandro, G. A.; Rodriguez, A. Y.; Torres, D. F.] CSIC, Inst Ciencias Espai, IEEC, Barcelona 08193, Spain. [Caraveo, P. A.] Ist Astrofis Spaziale & Fis Cosm, INAF, I-20133 Milan, Italy. [Celik, Oe; Gehrels, N.; Harding, A. K.; Hays, E.; McEnery, J. E.; Moiseev, A. A.; Stamatikos, M.; Thompson, D. J.; Troja, E.; Vasileiou, V.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Celik, Oe; Moiseev, A. A.; Vasileiou, V.] CRESST, Greenbelt, MD 20771 USA. [Celik, Oe; Vasileiou, V.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA. [Celik, Oe; Vasileiou, V.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA. [Chekhtman, A.; Makeev, A.] George Mason Univ, Fairfax, VA 22030 USA. [Cohen-Tanugi, J.; Farnier, C.; Komin, N.; Nuss, E.; Pelassa, V.; Piron, F.] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS, IN2P3, Montpellier, France. [Cominsky, L. R.] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA. [Conrad, J.; Meurer, C.; Ripken, J.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. [Cutini, S.; Gasparrini, D.; Giommi, P.] Sci Data Ctr, ASI, I-00044 Frascati, Roma, Italy. [de Angelis, A.; Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy. [de Angelis, A.; Frailis, M.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy. [Dumora, D.; Grondin, M-H.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France. [Dumora, D.; Grondin, M-H.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Ctr Etud Nucl Bordeaux Gradignan, CNRS, IN2P3, UMR 5797, F-33175 Gradignan, France. [Fishman, G.; Kouveliotou, C.; van der Horst, A. J.; Wilson-Hodge, C.] NASA, Marshall Space Flight Ctr, Duluth, MN 55812 USA. [Fukazawa, Y.; Hanabata, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.; Yamazaki, R.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan. [Gehrels, N.; Meszaros, P.; Toma, K.; Wu, X. F.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Gehrels, N.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Gehrels, N.; McEnery, J. E.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Granot, J.] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Guillemot, L.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Haynes, R. H.] Univ Virginia, Charlottesville, VA 22904 USA. [Jackson, M. S.; McGlynn, S.; Ryde, F.; Ylinen, T.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden. [Kataoka, J.] Waseda Univ, Shinjuku Ku, Tokyo 1698050, Japan. [Kawai, N.; Nakamori, T.; Troja, E.] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan. [Kawai, N.] RIKEN, Cosm Radiat Lab, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan. [Kippen, R. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Knoedlseder, J.; Vilchez, N.] UPS, Ctr Etud Spatiale Rayonnements, CNRS, F-31028 Toulouse 4, France. [McBreen, S.] Natl Univ Ireland Univ Coll Dublin, Dublin 4, Ireland. [Meegan, C.] USRA, Columbia, MD 21044 USA. [Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy. [Norris, J. P.; Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA. [Ohno, M.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria. [Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA. [Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA. [Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA. [Tagliaferri, G.] INAF Osservatorio Astron Brera, I-23807 Merate, Italy. [Torres, D. F.] ICREA, Barcelona, Spain. [Tramacere, A.] CIFS, I-10133 Turin, Italy. [Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy. [Wu, X. F.] J CPNPC, Nanjing 210093, Peoples R China. [Wu, X. F.] Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China. [Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden. RP Abdo, AA (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. EM asano@phys.titech.ac.jp; narayana.bhat@nasa.gov; nicola.omodei@gmail.com RI Komin, Nukri/J-6781-2015; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015; Johannesson, Gudlaugur/O-8741-2015; Gargano, Fabio/O-8934-2015; Loparco, Francesco/O-8847-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Bissaldi, Elisabetta/K-7911-2016; Wu, Xuefeng/G-5316-2015; Torres, Diego/O-9422-2016; Hays, Elizabeth/D-3257-2012; Johnson, Neil/G-3309-2014; Thompson, David/D-2939-2012; Harding, Alice/D-3160-2012; Gehrels, Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012; lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Nolan, Patrick/A-5582-2009; Kuss, Michael/H-8959-2012; giglietto, nicola/I-8951-2012; Tosti, Gino/E-9976-2013; Rando, Riccardo/M-7179-2013 OI Moretti, Elena/0000-0001-5477-9097; Cutini, Sara/0000-0002-1271-2924; Berenji, Bijan/0000-0002-4551-772X; Gasparrini, Dario/0000-0002-5064-9495; Tramacere, Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726; Tagliaferri, Gianpiero/0000-0003-0121-0723; giommi, paolo/0000-0002-2265-5003; De Angelis, Alessandro/0000-0002-3288-2517; Frailis, Marco/0000-0002-7400-2135; Caraveo, Patrizia/0000-0003-2478-8018; Komin, Nukri/0000-0003-3280-0582; Preece, Robert/0000-0003-1626-7335; Burgess, James/0000-0003-3345-9515; Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577; Pesce-Rollins, Melissa/0000-0003-1790-8018; Axelsson, Magnus/0000-0003-4378-8785; McBreen, Sheila/0000-0002-1477-618X; Reimer, Olaf/0000-0001-6953-1385; Funk, Stefan/0000-0002-2012-0080; Johannesson, Gudlaugur/0000-0003-1458-7036; Gargano, Fabio/0000-0002-5055-6395; Loparco, Francesco/0000-0002-1173-5673; Moskalenko, Igor/0000-0001-6141-458X; Mazziotta, Mario /0000-0001-9325-4672; Bissaldi, Elisabetta/0000-0001-9935-8106; Wu, Xuefeng/0000-0002-6299-1263; Torres, Diego/0000-0002-1522-9065; Sgro', Carmelo/0000-0001-5676-6214; Rando, Riccardo/0000-0001-6992-818X; Thompson, David/0000-0001-5217-9135; lubrano, pasquale/0000-0003-0221-4806; Morselli, Aldo/0000-0002-7704-9553; giglietto, nicola/0000-0002-9021-2888; FU NASA; DOE; CEA/Irfu; IN2P3/CNRS; ASI; INFN; MEXT; KEK; JAXA; K. A. Wallenberg Foundation; Swedish Research Council; National Space Board in Sweden; INAF; CNES FX The Fermi LAT Collaboration acknowledges support from a number of agencies and institutes for both development and the operation of the LAT as well as scientific data analysis. These include NASA and DOE in the United States, CEA/Irfu and IN2P3/CNRS in France, ASI and INFN in Italy, MEXT, KEK, and JAXA in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the National Space Board in Sweden. Additional support from INAF in Italy and CNES in France for science analysis during the operations phase is also gratefully acknowledged. NR 49 TC 47 Z9 47 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 2010 VL 712 IS 1 BP 558 EP 564 DI 10.1088/0004-637X/712/1/558 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564NX UT WOS:000275222900049 ER PT J AU Podesta, JJ Borovsky, JE Gary, SP AF Podesta, J. J. Borovsky, J. E. Gary, S. P. TI A KINETIC ALFVEN WAVE CASCADE SUBJECT TO COLLISIONLESS DAMPING CANNOT REACH ELECTRON SCALES IN THE SOLAR WIND AT 1 AU SO ASTROPHYSICAL JOURNAL LA English DT Article DE solar wind; turbulence; waves ID ASTROPHYSICAL GYROKINETICS; DISSIPATION RANGE; ACCRETION FLOWS; MAGNETIC-FIELD; LINEAR-THEORY; TURBULENCE; FLUCTUATIONS; DYNAMICS; SPECTRA AB Turbulence in the solar wind is believed to generate an energy cascade that is supported primarily by Alfven waves or Alfvenic fluctuations at MHD scales and by kinetic Alfven waves (KAWs) at kinetic scales k(vertical bar)rho(i) greater than or similar to 1. Linear Landau damping of KAWs increases with increasing wavenumber and at some point the damping becomes so strong that the energy cascade is completely dissipated. A model of the energy cascade process that includes the effects of linear collisionless damping of KAWs and the associated compounding of this damping throughout the cascade process is used to determine the wavenumber where the energy cascade terminates. It is found that this wavenumber occurs approximately when |gamma/omega| similar or equal to 0.25, where omega(k) and gamma(k) are, respectively, the real frequency and damping rate of KAWs and the ratio gamma/omega is evaluated in the limit as k(perpendicular to) >> k(parallel to). For plasma parameters typical of high-speed solar wind streams at 1 AU, the model suggests that the KAW cascade in the solar wind is almost completely dissipated before reaching the wavenumber k(perpendicular to)rho(i) similar or equal to 25. Consequently, an energy cascade consisting solely of KAWs cannot reach scales on the order of the electron gyro-radius, k(perpendicular to)rho(e) similar to 1. This conclusion has important ramifications for the interpretation of solar wind magnetic field measurements. It implies that power-law spectra in the regime of electron scales must be supported by wave modes other than the KAW. C1 [Podesta, J. J.; Borovsky, J. E.; Gary, S. P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Podesta, JJ (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM jpodesta@solar.stanford.edu FU NASA Solar and Heliospheric Physics Program; NASA Heliospheric Guest-Investigator Program; NSF SHINE Program; Los Alamos National Laboratory LDRD Program FX This work was supported by the NASA Solar and Heliospheric Physics Program, the NASA Heliospheric Guest-Investigator Program, the NSF SHINE Program, and by the Los Alamos National Laboratory LDRD Program. NR 35 TC 51 Z9 51 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 2010 VL 712 IS 1 BP 685 EP 691 DI 10.1088/0004-637X/712/1/685 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564NX UT WOS:000275222900061 ER PT J AU Carollo, D Beers, TC Chiba, M Norris, JE Freeman, KC Lee, YS Ivezic, Z Rockosi, CM Yanny, B AF Carollo, Daniela Beers, Timothy C. Chiba, Masashi Norris, John E. Freeman, Ken C. Lee, Young Sun Ivezic, Zeljko Rockosi, Constance M. Yanny, Brian TI STRUCTURE AND KINEMATICS OF THE STELLAR HALOS AND THICK DISKS OF THE MILKY WAY BASED ON CALIBRATION STARS FROM SLOAN DIGITAL SKY SURVEY DR7 SO ASTROPHYSICAL JOURNAL LA English DT Article DE Galaxy: disk; Galaxy: formation; Galaxy: halo; Galaxy: kinematics and dynamics; methods: data analysis; stars: abundances ID METAL-POOR STARS; HORIZONTAL-BRANCH STARS; DWARF SPHEROIDAL GALAXY; NORTH GALACTIC POLE; PROPER-MOTION STARS; HIGH-RESOLUTION SPECTROSCOPY; GLOBULAR-CLUSTER SYSTEM; SURFACE MASS DENSITY; RR LYRAE STARS; DATA RELEASE AB The structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and kinematic quantities for 32360 "calibration stars" from the Sloan Digital Sky Survey (SDSS) and its first extension, SDSS-II, which included the sub-survey Sloan Extension for Galactic Understanding and Exploration (SEGUE). Full space motions for a sub-sample of 16,920 stars, exploring a local volume within 4 kpc of the Sun, are used to derive velocity ellipsoids for the inner- and outer-halo components of the Galaxy, as well as for the canonical thick-disk and proposed metal-weak thick-disk (MWTD) populations. This new sample of calibration stars represents an increase of 60% relative to the numbers used in a previous analysis. We first examine the question of whether the data require the presence of at least a two-component halo in order to account for the rotational behavior of likely halo stars in the local volume, and whether more than two components are needed. We also address the question of whether the proposed MWTD is kinematically and chemically distinct from the canonical thick disk, and point out that the Galactocentric rotational velocity inferred for the MWTD, as well as its mean metallicity, appear quite similar to the values derived previously for the Monoceros stream, suggesting a possible association between these structures. In addition, we consider the fractions of each component required to understand the nature of the observed kinematic behavior of the stellar populations of the Galaxy as a function of distance from the plane. Scale lengths and scale heights for the thick-disk and MWTD components are determined. Spatial density profiles for the inner- and outer-halo populations are inferred from a Jeans theorem analysis. The full set of calibration stars (including those outside the local volume) is used to test for the expected changes in the observed stellar metallicity distribution function with distance above the Galactic plane in situ, due to the changing contributions from the underlying stellar populations. The above issues are considered, in concert with theoretical and observational constraints from other Milky-Way-like galaxies, in light of modern cold dark matter galaxy formation models. C1 [Carollo, Daniela; Norris, John E.; Freeman, Ken C.] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia. [Carollo, Daniela] Osserv Astron Torino, INAF, I-10025 Pino Torinese, Italy. [Beers, Timothy C.; Lee, Young Sun] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Beers, Timothy C.; Lee, Young Sun] Michigan State Univ, JINA Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA. [Chiba, Masashi] Tohoku Univ, Astron Inst, Sendai, Miyagi 9808578, Japan. [Ivezic, Zeljko] Univ Washington, Dept Astron, Seattle, WA 98195 USA. [Rockosi, Constance M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Yanny, Brian] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Carollo, D (reprint author), Australian Natl Univ, Res Sch Astron & Astrophys, Cotter Rd, Weston, ACT 2611, Australia. EM carollo@mso.anu.edu.au; beers@pa.msu.edu; chiba@astr.tohoku.ac.jp; jen@mso.anu.edu.au; kcf@mso.anu.edu.au; lee@pa.msu.edu; ivezic@astro.washington.edu; crockosi@ucolick.org; yanny@fnal.gov FU RSAA ANU; U.S. National Science Foundation [PHY 02-16783, PHY 08-22648]; Ministry of Education, Culture, Sports, Science and Technology in Japan [20340039]; Australian Research Council [DP0663562, DP0984924]; NSF [AST 06-15991, AAST-07 07901]; [AST 05-51161] FX D. C. acknowledges funding from RSAA ANU to pursue her research. She is particularly grateful to W. E. Harris for useful discussions on the mixture-modeling analysis and the R-Mix package, during his visit to Mount Stromlo Observatory. She also is grateful for partial support from JINA, which funded her multiple visits to MSU, and for the hospitality of its faculty, staff, and students during her stays. T. C. B. and Y.S.L. acknowledge partial funding of this work from grants PHY 02-16783 and PHY 08-22648: Physics Frontier Center/Joint Institute for Nuclear Astrophysics (JINA), awarded by the U.S. National Science Foundation. M.C. acknowledges support from a Grant-in-Aid for Scientific Research (20340039) of the Ministry of Education, Culture, Sports, Science and Technology in Japan. Studies at ANU of the most metal-poor populations of the Milky Way are supported by Australian Research Council grants DP0663562 and DP0984924. Z.I. acknowledges support from NSF grants AST 06-15991 and AAST-07 07901, as well as from grant AST 05-51161 to LSST for design and development activities. T. C. B. is grateful for the assistance and hospitality of the faculty, staff, and students at Mount Stromlo Observatory, during a recent research leave. NR 145 TC 229 Z9 231 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 2010 VL 712 IS 1 BP 692 EP 727 DI 10.1088/0004-637X/712/1/692 PG 36 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564NX UT WOS:000275222900062 ER PT J AU Morley, SK Friedel, RHW Cayton, TE Noveroske, E AF Morley, S. K. Friedel, R. H. W. Cayton, T. E. Noveroske, E. TI A rapid, global and prolonged electron radiation belt dropout observed with the Global Positioning System constellation SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID ION-CYCLOTRON WAVES; PITCH-ANGLE SCATTERING; GEOMAGNETIC STORMS; SOLAR-WIND; RELATIVISTIC ELECTRONS; ACCELERATION; LOCATION; CRRES; MODEL AB A rapid loss of energetic (>230 keV) electrons from the outer radiation belt was observed with the GPS constellation between 1430 and 1730 UTC on 7 May 2007. The rapid loss occurred from 4 < L* < 6 over all measured energies above 230 keV. Currently accepted rapid loss mechanisms include magnetopause shadowing and/or outward diffusion, and precipitation to the atmosphere due to wave-particle interactions. Here the loss timescale is similar to 2 hr, and the magnetopause is near L = 8, which requires unrealistically high outward diffusion rates. Current estimates of the loss timescales associated with EMIC waves, plasmaspheric hiss and whistler-mode chorus are too long, even in combination, to explain the observed losses inside L* similar or equal to 6. Citation: Morley, S. K., R. H. W. Friedel, T. E. Cayton, and E. Noveroske (2010), A rapid, global and prolonged electron radiation belt dropout observed with the Global Positioning System constellation, Geophys. Res. Lett., 37, L06102, doi: 10.1029/2010GL042772. C1 [Morley, S. K.; Friedel, R. H. W.; Cayton, T. E.] Los Alamos Natl Lab, Space Sci & Applicat Int Space & Res Div, Los Alamos, NM 87545 USA. [Noveroske, E.] Los Alamos Natl Lab, Space Data Syst Int Space & Res Div, Los Alamos, NM 87545 USA. RP Morley, SK (reprint author), Los Alamos Natl Lab, Space Sci & Applicat Int Space & Res Div, MS D466, Los Alamos, NM 87545 USA. EM smorley@lanl.gov RI Morley, Steven/A-8321-2008; Friedel, Reiner/D-1410-2012 OI Morley, Steven/0000-0001-8520-0199; Friedel, Reiner/0000-0002-5228-0281 FU U.S. Department of Energy FX This work was performed under the auspices of the U.S. Department of Energy. Geophysical indices were obtained from the WDC for Geomagnetism, Kyoto and the sudden storm commencement timing was taken from the U. S. National Geophysical Data Center. The authors thank Josef Koller, Geoff Reeves and John Steinberg (LANL) for useful discussions. NR 27 TC 25 Z9 25 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAR 20 PY 2010 VL 37 AR L06102 DI 10.1029/2010GL042772 PG 5 WC Geosciences, Multidisciplinary SC Geology GA 572TW UT WOS:000275857100002 ER PT J AU Fisher, JB Sitch, S Malhi, Y Fisher, RA Huntingford, C Tan, SY AF Fisher, J. B. Sitch, S. Malhi, Y. Fisher, R. A. Huntingford, C. Tan, S. -Y. TI Carbon cost of plant nitrogen acquisition: A mechanistic, globally applicable model of plant nitrogen uptake, retranslocation, and fixation SO GLOBAL BIOGEOCHEMICAL CYCLES LA English DT Article ID CLIMATE-CHANGE; TERRESTRIAL CARBON; FOREST ECOSYSTEMS; SOIL-NITROGEN; ROOT BIOMASS; NUTRIENT RETRANSLOCATION; ATMOSPHERIC CARBON; VEGETATION MODELS; SENESCING LEAVES; SIMULATION-MODEL AB Nitrogen (N) generally limits plant growth and controls biosphere responses to climate change. We introduce a new mathematical model of plant N acquisition, called Fixation and Uptake of Nitrogen (FUN), based on active and passive soil N uptake, leaf N retranslocation, and biological N fixation. This model is unified under the theoretical framework of carbon (C) cost economics, or resource optimization. FUN specifies C allocated to N acquisition as well as remaining C for growth, or N-limitation to growth. We test the model with data from a wide range of sites (observed versus predicted N uptake r(2) is 0.89, and RMSE is 0.003 kg N m(-2).yr(-1)). Four model tests are performed: (1) fixers versus nonfixers under primary succession; (2) response to N fertilization; (3) response to CO2 fertilization; and (4) changes in vegetation C from potential soil N trajectories for five DGVMs (HYLAND, LPJ, ORCHIDEE, SDGVM, and TRIFFID) under four IPCC scenarios. Nonfixers surpass the productivity of fixers after similar to 150-180 years in this scenario. FUN replicates the N uptake response in the experimental N fertilization from a modeled N fertilization. However, FUN cannot replicate the N uptake response in the experimental CO2 fertilization from a modeled CO2 fertilization; nonetheless, the correct response is obtained when differences in root biomass are included. Finally, N-limitation decreases biomass by 50 Pg C on average globally for the DGVMs. We propose this model as being suitable for inclusion in the new generation of Earth system models that aim to describe the global N cycle. C1 [Fisher, J. B.; Malhi, Y.; Tan, S. -Y.] Univ Oxford, Environm Change Inst, Sch Geog & Environm, Oxford OX1 3QY, England. [Fisher, R. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Huntingford, C.] Ctr Ecol & Hydrol, Wallingford OX10 8BB, Oxon, England. [Sitch, S.] Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England. RP Fisher, JB (reprint author), Univ Oxford, Environm Change Inst, Sch Geog & Environm, S Parks Rd, Oxford OX1 3QY, England. EM joshbfisher@gmail.com RI Huntingford, Chris/A-4307-2008; Sitch, Stephen/F-8034-2015 OI Sitch, Stephen/0000-0003-1821-8561 FU U.K. Natural Environment Research Council (NERC), Quantifying Ecosystem Roles in the Carbon Cycle (QUERCC); Quantifying and Understanding the Earth System (QUEST) FX Support was provided by the U.K. Natural Environment Research Council (NERC) under the Quantifying Ecosystem Roles in the Carbon Cycle (QUERCC) and Quantifying and Understanding the Earth System (QUEST) programs. D. Clark, R. Muetzelfeldt, R. Wania, and anonymous reviewers provided useful suggestions. NR 94 TC 42 Z9 43 U1 9 U2 71 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0886-6236 J9 GLOBAL BIOGEOCHEM CY JI Glob. Biogeochem. Cycle PD MAR 20 PY 2010 VL 24 AR GB1014 DI 10.1029/2009GB003621 PG 17 WC Environmental Sciences; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Geology; Meteorology & Atmospheric Sciences GA 572TX UT WOS:000275857200003 ER PT J AU Green, D AF Green, D. TI HOW PHYSICS DEFINES THE LHC ENVIRONMENT AND DETECTORS SO INTERNATIONAL JOURNAL OF MODERN PHYSICS A LA English DT Review ID HADRON C1 Fermilab Natl Accelerator Lab, CMS Dept, Batavia, IL 60510 USA. RP Green, D (reprint author), Fermilab Natl Accelerator Lab, CMS Dept, Batavia, IL 60510 USA. EM dgreen@fnal.gov NR 7 TC 1 Z9 1 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-751X J9 INT J MOD PHYS A JI Int. J. Mod. Phys. A PD MAR 20 PY 2010 VL 25 IS 7 BP 1279 EP 1313 DI 10.1142/S0217751X10049104 PG 35 WC Physics, Nuclear; Physics, Particles & Fields SC Physics GA 583OJ UT WOS:000276687300001 ER PT J AU Zimmerman, JA Jones, RE Templeton, JA AF Zimmerman, Jonathan A. Jones, Reese E. Templeton, Jeremy A. TI A material frame approach for evaluating continuum variables in atomistic simulations SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article DE Continuum; Mechanics; Atomistic simulation; Stress; Microcontinuum ID MOLECULAR-DYNAMICS SIMULATIONS; INTERATOMIC POTENTIALS; MICROMORPHIC THEORY; STRESS CALCULATION; PARTICLE-SYSTEMS; VIRIAL-THEOREM; SHOCK-WAVES; DEFORMATION; MECHANICS; SOLIDS AB We present a material frame formulation analogous to the spatial frame formulation developed by Hardy, whereby expressions for continuum mechanical variables such as stress and heat flux are derived from atomic-scale quantities intrinsic to molecular simulation. This formulation is ideally suited for developing an atomistic-to-continuum correspondence for solid mechanics problems. We derive expressions for the first Piola-Kirchhoff (P-K) stress tensor and the material frame heat flux vector directly from the momentum and energy balances using localization functions in a reference configuration. The resulting P-K stress tensor, unlike the Cauchy expression, has no explicit kinetic contribution. The referential heat flux vector likewise lacks the kinetic contribution appearing in its spatial frame counterpart. Using a proof for a special case and molecular dynamics simulations, we show that our P-K stress expression nonetheless represents a full measure of stress that is consistent with both the system virial and the Cauchy stress expression developed by Hardy. We also present an expanded formulation to define continuum variables from micromorphic continuum theory, which is suitable for the analysis of materials represented by directional bonding at the atomic scale. (C) 2009 Elsevier Inc. All rights reserved. C1 [Zimmerman, Jonathan A.; Jones, Reese E.] Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94551 USA. [Templeton, Jeremy A.] Sandia Natl Labs, Thermal Fluid Sci & Engn Dept, Livermore, CA 94551 USA. RP Zimmerman, JA (reprint author), Sandia Natl Labs, Mech Mat Dept, Livermore, CA 94551 USA. EM jzimmer@sandia.gov RI Zimmerman, Jonathan/A-8019-2012 FU Sandia Corporation; Lockheed Martin Company; United States Department of Energy [DE-AC04-94AL85000] FX The authors acknowledge helpful discussions with Douglas J. Bammann,Youping Chen, Terry J. Delph, James W. Foulk III, Robert J. Hardy, Richard B. Lehoucq, Alejandro Mota, Aidan P. Thompson, Gregory J. Wagner and Edmund B. Webb III. Sandia is a multi-program laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 51 TC 39 Z9 40 U1 1 U2 19 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD MAR 20 PY 2010 VL 229 IS 6 BP 2364 EP 2389 DI 10.1016/j.jcp.2009.11.039 PG 26 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA 562YN UT WOS:000275092000023 ER PT J AU Webb-Robertson, BJM Ratuiste, KG Oehmen, CS AF Webb-Robertson, Bobbie-Jo M. Ratuiste, Kyle G. Oehmen, Christopher S. TI Physicochemical property distributions for accurate and rapid pairwise protein homology detection SO BMC BIOINFORMATICS LA English DT Article ID LATENT SEMANTIC ANALYSIS; NETWORK PROPAGATION; FOLD RECOGNITION; ALIGNMENT; SEQUENCE; CLASSIFICATION; DATABASE; KERNELS; RANKING AB Background: The challenge of remote homology detection is that many evolutionarily related sequences have very little similarity at the amino acid level. Kernel-based discriminative methods, such as support vector machines (SVMs), that use vector representations of sequences derived from sequence properties have been shown to have superior accuracy when compared to traditional approaches for the task of remote homology detection. Results: We introduce a new method for feature vector representation based on the physicochemical properties of the primary protein sequence. A distribution of physicochemical property scores are assembled from 4-mers of the sequence and normalized based on the null distribution of the property over all possible 4-mers. With this approach there is little computational cost associated with the transformation of the protein into feature space, and overall performance in terms of remote homology detection is comparable with current state-of-the-art methods. We demonstrate that the features can be used for the task of pairwise remote homology detection with improved accuracy versus sequence-based methods such as BLAST and other feature-based methods of similar computational cost. Conclusions: A protein feature method based on physicochemical properties is a viable approach for extracting features in a computationally inexpensive manner while retaining the sensitivity of SVM protein homology detection. Furthermore, identifying features that can be used for generic pairwise homology detection in lieu of family-based homology detection is important for applications such as large database searches and comparative genomics. C1 [Webb-Robertson, Bobbie-Jo M.; Oehmen, Christopher S.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Ratuiste, Kyle G.] Gonzaga Univ, Dept Chem, Spokane, WA 99258 USA. RP Webb-Robertson, BJM (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM bj@pnl.gov FU Laboratory Directed Research and Development at PNNL; National Science Foundation [074553] FX We would like to thank Lee Ann McCue for her helpful comments about this methodology development effort. The Pacific Northwest National Laboratory (PNNL) is operated by Battelle for the U.S. Department of Energy under contract DE-AC-76RL01830. This material is based upon work supported by Laboratory Directed Research and Development at PNNL and the National Science Foundation under Grant No. 074553 (contract 53836A). NR 33 TC 10 Z9 10 U1 0 U2 0 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2105 J9 BMC BIOINFORMATICS JI BMC Bioinformatics PD MAR 19 PY 2010 VL 11 AR 145 DI 10.1186/1471-2105-11-145 PG 8 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Mathematical & Computational Biology GA 580YI UT WOS:000276486600001 PM 20302613 ER PT J AU Nishi, K Lee, HJ Park, SY Bae, SJ Lee, SE Adams, PD Rhee, JH Kim, JS AF Nishi, Kosuke Lee, Hyun-Ju Park, Suk-Youl Bae, Soo Jang Lee, Shee Eun Adams, Paul D. Rhee, Joon Haeng Kim, Jeong-Sun TI Crystal structure of the transcriptional activator HlyU from Vibrio vulnificus CMCP6 SO FEBS LETTERS LA English DT Article DE Crystal structure; HlyU; rtxA; Vibrio vulnificus ID VIRULENCE; REGULATOR; PROTEINS; CYTOTOXICITY; EXPRESSION; MECHANISM; REPRESSOR; CHOLERAE; MODEL AB HlyU is a transcription factor of the ArsR/SmtB family and activates the expression of the pathogenic Vibrio vulnificus RTX toxin. In contrast to the other metal-responding ArsR/SmtB proteins, HlyU does not sense metal ions. To provide its structural information, we elucidated the crystal structure of HlyU from V. vulnificus CMCP6 (HlyU_Vv). The monomeric HlyU_Vv architecture of five alpha-helices and two beta-strands, some of which constitute a typical DNA-binding winged helix-turn-helix (wHTH) motif, is very similar to that of other transcription regulators. Nonetheless, the homo-dimeric HlyU_Vv structure shows several different, three-dimensional features in the spatial position and the detailed dimeric interaction, which were not observed in the modeling study based on the same protein family and sequence similarity. Structured summary: MINT-7710072, MINT-7710086: HlyU_Vv ( uniprotkb: Q8DES3) and HlyU_Vv (uniprotkb: Q8DES3) bind (MI: 0407) by X-ray crystallography (MI: 0114) (C) 2010 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved. C1 [Nishi, Kosuke; Lee, Hyun-Ju; Park, Suk-Youl; Kim, Jeong-Sun] Chonnam Natl Univ, Dept Chem, Kwangju 500757, South Korea. [Bae, Soo Jang; Rhee, Joon Haeng] Chonnam Natl Univ, Sch Med, Res Inst Vibrio Infect, Clin Vaccine R&D Ctr, Kwangju 501746, South Korea. [Bae, Soo Jang; Rhee, Joon Haeng] Chonnam Natl Univ, Sch Med, Dept Microbiol, Kwangju 501746, South Korea. [Lee, Shee Eun] Chonnam Natl Univ, Coll Dent, Dept Dent Pharmacol, Kwangju 500757, South Korea. [Adams, Paul D.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Kim, JS (reprint author), Chonnam Natl Univ, Dept Chem, 300 Yongbong Dong, Kwangju 500757, South Korea. EM jsunkim@chonnam.ac.kr RI Adams, Paul/A-1977-2013; OI Adams, Paul/0000-0001-9333-8219; Nishi, Kosuke/0000-0003-4205-8465 FU Ministry of Science and Technology, Republic of Korea; Regional Technology Innovation Program of the Ministry of Knowledge Economy (MKE) [RTI05-0101] FX This work was supported by the Ministry of Science and Technology, Republic of Korea (21C Frontier Microbial Genomics and Application Center Program) to J.S.K., and by Grant No. RTI05-0101 from the Regional Technology Innovation Program of the Ministry of Knowledge Economy (MKE) to J.H.R. NR 22 TC 7 Z9 7 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0014-5793 J9 FEBS LETT JI FEBS Lett. PD MAR 19 PY 2010 VL 584 IS 6 BP 1097 EP 1102 DI 10.1016/j.febslet.2010.02.052 PG 6 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 571GC UT WOS:000275738700005 PM 20178784 ER PT J AU Maceira, M Rowe, CA Beroza, G Anderson, D AF Maceira, M. Rowe, C. A. Beroza, G. Anderson, D. TI Identification of low-frequency earthquakes in non-volcanic tremor using the subspace detector method SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID CASCADIA SUBDUCTION ZONE; EPISODIC TREMOR; SOUTHERN CALIFORNIA; SOUTHWEST JAPAN; SILENT SLIP; INTERFACE AB Shelly et al. identified 188 low frequency earthquakes (LFEs) in a one-hour episode of tremor recorded at Japanese Hi-Net borehole stations. Later they proposed that nonvolcanic tremor may consist entirely of a sequence of LFEs. We search for additional LFEs using the subspace detector technique. This method uses a matrix of template waveforms and, via singular value decomposition, builds a set of basis vectors that, in some linear combination, can reproduce the templates or similar events that fall within the subspace. We explore the utility of the method to search for additional LFEs within the subspace spanned by our basis vectors. The results compare well with previous LFE detections. We also compare our results with an independent measure of signal polarization and find that the polarization takes on a distinct character during times of known LFEs. This suggests that signal polarization may also have potential for tremor detection, characterization, and monitoring. Citation: Maceira, M., C. A. Rowe, G. Beroza, and D. Anderson (2010), Identification of low-frequency earthquakes in non-volcanic tremor using the subspace detector method, Geophys. Res. Lett., 37, L06303, doi:10.1029/2009GL041876. C1 [Maceira, M.; Rowe, C. A.; Anderson, D.] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA. [Beroza, G.] Stanford Univ, Dept Geophys, Stanford, CA 94305 USA. RP Maceira, M (reprint author), Los Alamos Natl Lab, Div Earth & Environm Sci, EES 17,MS D443, Los Alamos, NM 87545 USA. EM mmaceira@lanl.gov OI Maceira, Monica/0000-0003-1248-2185; Rowe, Charlotte/0000-0001-5803-0147 FU Institute of Geophysics and Planetary Physics (IGPP) program; University of California; National Nuclear Security Administration (NNSA); National Science Foundation [EAR-0710835] FX This work was supported by the Institute of Geophysics and Planetary Physics (IGPP) program administered by Los Alamos National Laboratory and the University of California, with additional support from the National Nuclear Security Administration (NNSA) and the National Science Foundation through NSF grant EAR-0710835. We are indebted to R. Aster for the subspace detector initial scripts, D. Shelly for helpful discussions and S. Ide for help with the data. We thank K. Creager, the editor, and an anonymous reviewer for their constructive comments and suggestions that helped to improve this manuscript. Analyses and figures were generated using MATLAB. This is Los Alamos National Laboratory publication LA-UR09-07573. NR 27 TC 12 Z9 13 U1 0 U2 7 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAR 19 PY 2010 VL 37 AR L06303 DI 10.1029/2009GL041876 PG 5 WC Geosciences, Multidisciplinary SC Geology GA 572TV UT WOS:000275857000002 ER PT J AU Hendricks, TR Ivanov, IN Schaeffer, DA Menchhofer, PA Simpson, JT AF Hendricks, Troy R. Ivanov, Ilia N. Schaeffer, Daniel A. Menchhofer, Paul A. Simpson, John T. TI Processing of loose carbon nanotubes into isolated, high density submicron channels SO NANOTECHNOLOGY LA English DT Article ID ARRAY GLASS; FIBERS; VOLTAMMETRY; MICROSCOPY AB Loose multi-wall carbon nanotubes (MWNTs) were processed into a bundle of 19 600 individual channels with an individual channel diameter of 0.4 mu m using a fiber drawing process. First, a powder of sodium silicate solution containing purified MWNTs was created. A glass capillary tube was filled with the powder and drawn into fibers. The fibers were cut into segments, bundled and redrawn multiple times to create fibers with multiple channels containing MWNTs. This processing approach created thousands of uniformly ordered channels containing dispersed MWNTs in a glass matrix while simultaneously aligning the MWNTs. The bulk resistivity of the MWNT-silicate channel has been improved by 38% after two consecutive draws as a result of the increased MWNT fraction. C1 [Hendricks, Troy R.; Schaeffer, Daniel A.; Simpson, John T.] Oak Ridge Natl Lab, Measurement Sci & Syst Engn Div, Oak Ridge, TN USA. [Ivanov, Ilia N.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. [Menchhofer, Paul A.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN USA. RP Hendricks, TR (reprint author), Oak Ridge Natl Lab, Measurement Sci & Syst Engn Div, Oak Ridge, TN USA. EM hendrickstr@ornl.gov; ivanovin@ornl.gov RI Schaeffer, Daniel/B-2327-2013; ivanov, ilia/D-3402-2015; Schaeffer, Daniel/N-5774-2015; Menchhofer, Paul/E-1529-2017 OI ivanov, ilia/0000-0002-6726-2502; Schaeffer, Daniel/0000-0002-1868-6632; Menchhofer, Paul/0000-0001-9475-314X FU Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy [DE-AC05-00OR22725] FX This research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC for the US Department of Energy under contract no. DE-AC05-00OR22725. A portion of this research at Oak Ridge National Laboratory's Center for Nanophase Materials Sciences was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. NR 24 TC 4 Z9 4 U1 1 U2 7 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD MAR 19 PY 2010 VL 21 IS 11 AR 115301 DI 10.1088/0957-4484/21/11/115301 PG 7 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 560WZ UT WOS:000274936700011 PM 20173230 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D Datta, M Davies, T de Barbaro, P De Cecco, S Deisher, A De Lorenzo, G Dell'Orso, M Deluca, C Demortier, L Deng, J Deninno, M d'Errico, M Di Canto, A di Giovanni, GP Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Frank, MJ Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Garosi, P Gerberich, H Gerdes, D Gessler, A Giagu, S Giakoumopoulou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Giurgiu, G Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U da Costa, JG Gunay-Unalan, Z Haber, C Hahn, SR Halkiadakis, E Han, BY Han, JY Happacher, F Hara, K Hare, D Hare, M Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M Heijboer, A Heinrich, J Henderson, C Herndon, M Heuser, J Hewamanage, S Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Hughes, RE Hurwitz, M Husemann, U Hussein, M Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A James, E Jang, D Jayatilaka, B Jeon, EJ Jha, MK Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Ketchum, W Keung, J Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V Kuhr, T Kulkarni, NP Kurata, M Kwang, S Laasanen, AT Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, E Lee, HS Lee, JS Lee, SW Leone, S Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, V Martinez, M Martinez-Ballarin, R Mastrandrea, P Mathis, M Mattson, ME Mazzanti, P McFarland, KS McIntyre, P McNulty, R Mehta, A Mehtala, P Menzione, A Mesropian, C Miao, T Mietlicki, D Miladinovic, N Miller, R Mills, C Milnik, M Mitra, A Mitselmakher, G Miyake, H Moed, S Moggi, N Mondragon, MN Moon, CS Moore, R Morello, MJ Morlock, J Fernandez, PM Mulmenstadt, J Mukherjee, A Muller, T Murat, P Mussini, M Nachtman, J Nagai, Y Naganoma, J Nakamura, K Nakano, I Napier, A Nett, J Neu, C Neubauer, MS Neubauer, S Nielsen, J Nodulman, L Norman, M Norniella, O Nurse, E Oakes, L Oh, SH Oh, YD Oksuzian, I Okusawa, T Orava, R Osterberg, K Griso, SP Pagliarone, C Palencia, E Papadimitriou, V Papaikonomou, A Paramanov, AA Parks, B Pashapour, S Patrick, J Pauletta, G Paulini, M Paus, C Peiffer, T Pellett, DE Penzo, A Phillips, TJ Piacentino, G Pianori, E Pinera, L Pitts, K Plager, C Pondrom, L Potamianos, K Poukhov, O Prokoshin, F Pronko, A Ptohos, F Pueschel, E Punzi, G Pursley, J Rademacker, J Rahaman, A Ramakrishnan, V Ranjan, N Redondo, I Renton, P Renz, M Rescigno, M Richter, S Rimondi, F Ristori, L Robson, A Rodrigo, T Rodriguez, T Rogers, E Rolli, S Roser, R Rossi, M Rossin, R Roy, P Ruiz, A Russ, J Rusu, V Rutherford, B Saarikko, H Safonov, A Sakumoto, WK Santi, L Sartori, L Sato, K Savoy-Navarro, A Schlabach, P Schmidt, A Schmidt, EE Schmidt, MA Schmidt, MP Schmitt, M Schwarz, T Scodellaro, L Scribano, A Scuri, F Sedov, A Seidel, S Seiya, Y Semenov, A Sexton-Kennedy, L Sforza, F Sfyrla, A Shalhout, SZ Shears, T Shepard, PF Shimojima, M Shiraishi, S Shochet, M Shon, Y Shreyber, I Simonenko, A Sinervo, P Sisakyan, A Slaughter, AJ Slaunwhite, J Sliwa, K Smith, JR Snider, FD Snihur, R Soha, A Somalwar, S Sorin, V Squillacioti, P Stanitzki, M Denis, RS Stelzer, B Stelzer-Chilton, O Stentz, D Strologas, J Strycker, GL Suh, JS Sukhanov, A Suslov, I Taffard, A Takashima, R Takeuchi, Y Tanaka, R Tang, J Tecchio, M Teng, PK Thom, J Thome, J Thompson, GA Thomson, E Tipton, P Ttito-Guzman, P Tkaczyk, S Toback, D Tokar, S Tollefson, K Tomura, T Tonelli, D Torre, S Torretta, D Totaro, P Tourneur, S Trovato, M Tsai, SY Tu, Y Turini, N Ukegawa, F Uozumi, S van Remortel, N Varganov, A Vataga, E Vazquez, F Velev, G Vellidis, C Vidal, M Vila, I Vilar, R Vogel, M Volobouev, I Volpi, G Wagner, P Wagner, RG Wagner, RL Wagner, W Wagner-Kuhr, J Wakisaka, T Wallny, R Wang, SM Warburton, A Waters, D Weinberger, M Weinelt, J Wester, WC Whitehouse, B Whiteson, D Wicklund, AB Wicklund, E Wilbur, S Williams, G Williams, HH Wilson, P Winer, BL Wittich, P Wolbers, S Wolfe, C Wolfe, H Wright, T Wu, X Wurthwein, F Yagil, A Yamamoto, K Yamaoka, J Yang, UK Yang, YC Yao, WM Yeh, GP Yi, K Yoh, J Yorita, K Yoshida, T Yu, GB Yu, I Yu, SS Yun, JC Zanetti, A Zeng, Y Zhang, X Zheng, Y Zucchelli, S AF Aaltonen, T. Adelman, J. Alvarez Gonzalez, B. Amerio, S. Amidei, D. Anastassov, A. Annovi, A. Antos, J. Apollinari, G. Apresyan, A. Arisawa, T. Artikov, A. Asaadi, J. Ashmanskas, W. Attal, A. Aurisano, A. Azfar, F. Badgett, W. Barbaro-Galtieri, A. Barnes, V. E. Barnett, B. A. Barria, P. Bartos, P. Bauer, G. Beauchemin, P. -H. Bedeschi, F. Beecher, D. Behari, S. Bellettini, G. Bellinger, J. Benjamin, D. Beretvas, A. Bhatti, A. Binkley, M. Bisello, D. Bizjak, I. Blair, R. E. Blocker, C. Blumenfeld, B. Bocci, A. Bodek, A. Boisvert, V. Bortoletto, D. Boudreau, J. Boveia, A. Brau, B. Bridgeman, A. Brigliadori, L. Bromberg, C. Brubaker, E. Budagov, J. Budd, H. S. Budd, S. Burkett, K. Busetto, G. Bussey, P. Buzatu, A. Byrum, K. L. Cabrera, S. Calancha, C. Camarda, S. Campanelli, M. Campbell, M. Canelli, F. Canepa, A. Carls, B. Carlsmith, D. Carosi, R. Carrillo, S. Carron, S. Casal, B. Casarsa, M. Castro, A. Catastini, P. Cauz, D. Cavaliere, V. Cavalli-Sforza, M. Cerri, A. Cerrito, L. Chang, S. H. Chen, Y. C. Chertok, M. Chiarelli, G. Chlachidze, G. Chlebana, F. Cho, K. Chokheli, D. Chou, J. P. Chung, K. Chung, W. H. Chung, Y. S. Chwalek, T. Ciobanu, C. I. Ciocci, M. A. Clark, A. Clark, D. Compostella, G. Convery, M. E. Conway, J. Corbo, M. Cordelli, M. Cox, C. A. Cox, D. J. Crescioli, F. Almenar, C. Cuenca Cuevas, J. Culbertson, R. Cully, J. C. Dagenhart, D. Datta, M. Davies, T. de Barbaro, P. De Cecco, S. Deisher, A. De Lorenzo, G. Dell'Orso, M. Deluca, C. Demortier, L. Deng, J. Deninno, M. d'Errico, M. Di Canto, A. di Giovanni, G. P. Di Ruzza, B. Dittmann, J. R. D'Onofrio, M. Donati, S. Dong, P. Dorigo, T. Dube, S. Ebina, K. Elagin, A. Erbacher, R. Errede, D. Errede, S. Ershaidat, N. Eusebi, R. Fang, H. C. Farrington, S. Fedorko, W. T. Feild, R. G. Feindt, M. Fernandez, J. P. Ferrazza, C. Field, R. Flanagan, G. Forrest, R. Frank, M. J. Franklin, M. Freeman, J. C. Furic, I. Gallinaro, M. Galyardt, J. Garberson, F. Garcia, J. E. Garfinkel, A. F. Garosi, P. Gerberich, H. Gerdes, D. Gessler, A. Giagu, S. Giakoumopoulou, V. Giannetti, P. Gibson, K. Gimmell, J. L. Ginsburg, C. M. Giokaris, N. Giordani, M. Giromini, P. Giunta, M. Giurgiu, G. Glagolev, V. Glenzinski, D. Gold, M. Goldschmidt, N. Golossanov, A. Gomez, G. Gomez-Ceballos, G. Goncharov, M. Gonzalez, O. Gorelov, I. Goshaw, A. T. Goulianos, K. Gresele, A. Grinstein, S. Grosso-Pilcher, C. Group, R. C. Grundler, U. da Costa, J. Guimaraes Gunay-Unalan, Z. Haber, C. Hahn, S. R. Halkiadakis, E. Han, B. -Y. Han, J. Y. Happacher, F. Hara, K. Hare, D. Hare, M. Harr, R. F. Hartz, M. Hatakeyama, K. Hays, C. Heck, M. Heijboer, A. Heinrich, J. Henderson, C. Herndon, M. Heuser, J. Hewamanage, S. Hidas, D. Hill, C. S. Hirschbuehl, D. Hocker, A. Hou, S. Houlden, M. Hsu, S. -C. Hughes, R. E. Hurwitz, M. Husemann, U. Hussein, M. Huston, J. Incandela, J. Introzzi, G. Iori, M. Ivanov, A. James, E. Jang, D. Jayatilaka, B. Jeon, E. J. Jha, M. K. Jindariani, S. Johnson, W. Jones, M. Joo, K. K. Jun, S. Y. Jung, J. E. Junk, T. R. Kamon, T. Kar, D. Karchin, P. E. Kato, Y. Kephart, R. Ketchum, W. Keung, J. Khotilovich, V. Kilminster, B. Kim, D. H. Kim, H. S. Kim, H. W. Kim, J. E. Kim, M. J. Kim, S. B. Kim, S. H. Kim, Y. K. Kimura, N. Kirsch, L. Klimenko, S. Kondo, K. Kong, D. J. Konigsberg, J. Korytov, A. Kotwal, A. V. Kreps, M. Kroll, J. Krop, D. Krumnack, N. Kruse, M. Krutelyov, V. Kuhr, T. Kulkarni, N. P. Kurata, M. Kwang, S. Laasanen, A. T. Lami, S. Lammel, S. Lancaster, M. Lander, R. L. Lannon, K. Lath, A. Latino, G. Lazzizzera, I. LeCompte, T. Lee, E. Lee, H. S. Lee, J. S. Lee, S. W. Leone, S. Lewis, J. D. Lin, C. -J. Linacre, J. Lindgren, M. Lipeles, E. Lister, A. Litvintsev, D. O. Liu, C. Liu, T. Lockyer, N. S. Loginov, A. Lovas, L. Lucchesi, D. Lueck, J. Lujan, P. Lukens, P. Lungu, G. Lys, J. Lysak, R. MacQueen, D. Madrak, R. Maeshima, K. Makhoul, K. Maksimovic, P. Malde, S. Malik, S. Manca, G. Manousakis-Katsikakis, A. Margaroli, F. Marino, C. Marino, C. P. Martin, A. Martin, V. Martinez, M. Martinez-Ballarin, R. Mastrandrea, P. Mathis, M. Mattson, M. E. Mazzanti, P. McFarland, K. S. McIntyre, P. McNulty, R. Mehta, A. Mehtala, P. Menzione, A. Mesropian, C. Miao, T. Mietlicki, D. Miladinovic, N. Miller, R. Mills, C. Milnik, M. Mitra, A. Mitselmakher, G. Miyake, H. Moed, S. Moggi, N. Mondragon, M. N. Moon, C. S. Moore, R. Morello, M. J. Morlock, J. Fernandez, P. Movilla Muelmenstaedt, J. Mukherjee, A. Muller, Th. Murat, P. Mussini, M. Nachtman, J. Nagai, Y. Naganoma, J. Nakamura, K. Nakano, I. Napier, A. Nett, J. Neu, C. Neubauer, M. S. Neubauer, S. Nielsen, J. Nodulman, L. Norman, M. Norniella, O. Nurse, E. Oakes, L. Oh, S. H. Oh, Y. D. Oksuzian, I. Okusawa, T. Orava, R. Osterberg, K. Griso, S. Pagan Pagliarone, C. Palencia, E. Papadimitriou, V. Papaikonomou, A. Paramanov, A. A. Parks, B. Pashapour, S. Patrick, J. Pauletta, G. Paulini, M. Paus, C. Peiffer, T. Pellett, D. E. Penzo, A. Phillips, T. J. Piacentino, G. Pianori, E. Pinera, L. Pitts, K. Plager, C. Pondrom, L. Potamianos, K. Poukhov, O. Prokoshin, F. Pronko, A. Ptohos, F. Pueschel, E. Punzi, G. Pursley, J. Rademacker, J. Rahaman, A. Ramakrishnan, V. Ranjan, N. Redondo, I. Renton, P. Renz, M. Rescigno, M. Richter, S. Rimondi, F. Ristori, L. Robson, A. Rodrigo, T. Rodriguez, T. Rogers, E. Rolli, S. Roser, R. Rossi, M. Rossin, R. Roy, P. Ruiz, A. Russ, J. Rusu, V. Rutherford, B. Saarikko, H. Safonov, A. Sakumoto, W. K. Santi, L. Sartori, L. Sato, K. Savoy-Navarro, A. Schlabach, P. Schmidt, A. Schmidt, E. E. Schmidt, M. A. Schmidt, M. P. Schmitt, M. Schwarz, T. Scodellaro, L. Scribano, A. Scuri, F. Sedov, A. Seidel, S. Seiya, Y. Semenov, A. Sexton-Kennedy, L. Sforza, F. Sfyrla, A. Shalhout, S. Z. Shears, T. Shepard, P. F. Shimojima, M. Shiraishi, S. Shochet, M. Shon, Y. Shreyber, I. Simonenko, A. Sinervo, P. Sisakyan, A. Slaughter, A. J. Slaunwhite, J. Sliwa, K. Smith, J. R. Snider, F. D. Snihur, R. Soha, A. Somalwar, S. Sorin, V. Squillacioti, P. Stanitzki, M. Denis, R. St. Stelzer, B. Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. Suh, J. S. Sukhanov, A. Suslov, I. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tang, J. Tecchio, M. Teng, P. K. Thom, J. Thome, J. Thompson, G. A. Thomson, E. Tipton, P. Ttito-Guzman, P. Tkaczyk, S. Toback, D. Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. Torre, S. Torretta, D. Totaro, P. Tourneur, S. Trovato, M. Tsai, S. -Y. Tu, Y. Turini, N. Ukegawa, F. Uozumi, S. van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Vidal, M. Vila, I. Vilar, R. Vogel, M. Volobouev, I. Volpi, G. Wagner, P. Wagner, R. G. Wagner, R. L. Wagner, W. Wagner-Kuhr, J. Wakisaka, T. Wallny, R. Wang, S. M. Warburton, A. Waters, D. Weinberger, M. Weinelt, J. Wester, W. C., III Whitehouse, B. Whiteson, D. Wicklund, A. B. Wicklund, E. Wilbur, S. Williams, G. Williams, H. H. Wilson, P. Winer, B. L. Wittich, P. Wolbers, S. Wolfe, C. Wolfe, H. Wright, T. Wu, X. Wuerthwein, F. Yagil, A. Yamamoto, K. Yamaoka, J. Yang, U. K. Yang, Y. C. Yao, W. M. Yeh, G. P. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. CA CDF Collaboration TI Search for Technicolor Particles Produced in Association with a W Boson at CDF SO PHYSICAL REVIEW LETTERS LA English DT Article ID SYMMETRY-BREAKING; DYNAMICS C1 [Aaltonen, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland. [Aaltonen, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Helsinki Inst Phys, FIN-00014 Helsinki, Finland. [Chen, Y. C.; Hou, S.; Martin, V.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan. [Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Paramanov, A. A.; Wagner, R. G.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA. [Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece. [Attal, A.; Camarda, S.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Grinstein, S.; Martinez, M.; Sorin, V.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain. [Dittmann, J. R.; Frank, M. J.; Hatakeyama, K.; Hewamanage, S.; Krumnack, N.] Baylor Univ, Waco, TX 76798 USA. [Brigliadori, L.; Castro, A.; Deninno, M.; Jha, M. K.; Mazzanti, P.; Moggi, N.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Ist Nazl Fis Nucl, I-40127 Bologna, Italy. [Brigliadori, L.; Castro, A.; Mussini, M.; Rimondi, F.; Zucchelli, S.] Univ Bologna, I-40127 Bologna, Italy. [Blocker, C.; Clark, D.; Kirsch, L.; Miladinovic, N.] Brandeis Univ, Waltham, MA 02254 USA. [Chertok, M.; Conway, J.; Cox, C. A.; Cox, D. J.; Erbacher, R.; Forrest, R.; Ivanov, A.; Johnson, W.; Lander, R. L.; Pellett, D. E.; Schwarz, T.; Smith, J. R.] Univ Calif Davis, Davis, CA 95616 USA. [Plager, C.; Wallny, R.; Zheng, Y.] Univ Calif Los Angeles, Los Angeles, CA 90024 USA. [Norman, M.; Wuerthwein, F.; Yagil, A.] Univ Calif San Diego, La Jolla, CA 92093 USA. [Boveia, A.; Brau, B.; Garberson, F.; Hill, C. S.; Incandela, J.; Krutelyov, V.; Rossin, R.] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA. [Alvarez Gonzalez, B.; Casal, B.; Cuevas, J.; Gomez, G.; Rodrigo, T.; Ruiz, A.; Scodellaro, L.; Vila, I.; Vilar, R.] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain. [Galyardt, J.; Jang, D.; Jun, S. Y.; Paulini, M.; Pueschel, E.; Russ, J.; Thome, J.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA. [Adelman, J.; Brubaker, E.; Canelli, F.; Fedorko, W. T.; Grosso-Pilcher, C.; Hurwitz, M.; Ketchum, W.; Kim, Y. K.; Krop, D.; Kwang, S.; Lee, H. S.; Schmidt, M. A.; Shiraishi, S.; Shochet, M.; Tang, J.; Wilbur, S.; Wolfe, C.; Yang, U. K.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Antos, J.; Bartos, P.; Lovas, L.; Lysak, R.; Tokar, S.] Comenius Univ, Bratislava 84248, Slovakia. [Antos, J.; Bartos, P.; Lovas, L.; Lysak, R.; Tokar, S.] Inst Expt Phys, Kosice 04001, Slovakia. [Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Poukhov, O.; Prokoshin, F.; Semenov, A.; Simonenko, A.; Sisakyan, A.; Suslov, I.] Joint Inst Nucl Res, RU-141980 Dubna, Russia. [Benjamin, D.; Bocci, A.; Cabrera, S.; Deng, J.; Goshaw, A. T.; Jayatilaka, B.; Kotwal, A. V.; Kruse, M.; Oh, S. H.; Phillips, T. J.; Yamaoka, J.; Yu, G. B.; Zeng, Y.] Duke Univ, Durham, NC 27708 USA. [Apollinari, G.; Ashmanskas, W.; Badgett, W.; Beretvas, A.; Binkley, M.; Burkett, K.; Canelli, F.; Carron, S.; Casarsa, M.; Chlachidze, G.; Chlebana, F.; Chung, K.; Convery, M. E.; Culbertson, R.; Dagenhart, D.; Datta, M.; Dong, P.; Freeman, J. C.; Ginsburg, C. M.; Glenzinski, D.; Golossanov, A.; Group, R. C.; Hahn, S. R.; Hocker, A.; James, E.; Jindariani, S.; Junk, T. R.; Kephart, R.; Kilminster, B.; Lammel, S.; Lewis, J. D.; Lindgren, M.; Litvintsev, D. O.; Liu, T.; Lukens, P.; Madrak, R.; Maeshima, K.; Miao, T.; Mondragon, M. N.; Moore, R.; Fernandez, P. Movilla; Mukherjee, A.; Murat, P.; Nachtman, J.; Palencia, E.; Papadimitriou, V.; Patrick, J.; Pronko, A.; Ptohos, F.; Roser, R.; Rusu, V.; Rutherford, B.; Schlabach, P.; Schmidt, E. E.; Sexton-Kennedy, L.; Slaughter, A. J.; Snider, F. D.; Soha, A.; Thom, J.; Tkaczyk, S.; Tonelli, D.; Torretta, D.; Velev, G.; Wagner, R. L.; Wester, W. C., III; Wicklund, E.; Wilson, P.; Wittich, P.; Wolbers, S.; Yeh, G. P.; Yi, K.; Yoh, J.; Yu, S. S.; Yun, J. C.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Carrillo, S.; Field, R.; Furic, I.; Goldschmidt, N.; Kar, D.; Klimenko, S.; Konigsberg, J.; Korytov, A.; Mitselmakher, G.; Oksuzian, I.; Pinera, L.; Sukhanov, A.; Vazquez, F.] Univ Florida, Gainesville, FL 32611 USA. [Annovi, A.; Cordelli, M.; Giromini, P.; Happacher, F.; Kim, M. J.; Torre, S.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy. [Clark, A.; Garcia, J. E.; Lister, A.; Wu, X.] Univ Geneva, CH-1211 Geneva 4, Switzerland. [Bussey, P.; Davies, T.; Martin, V.; Robson, A.; Denis, R. St.] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland. [Chou, J. P.; Franklin, M.; da Costa, J. Guimaraes; Mills, C.; Moed, S.] Harvard Univ, Cambridge, MA 02138 USA. [Bridgeman, A.; Budd, S.; Carls, B.; Errede, D.; Errede, S.; Gerberich, H.; Grundler, U.; Marino, C. P.; Neubauer, M. S.; Norniella, O.; Pitts, K.; Rogers, E.; Sfyrla, A.; Taffard, A.; Thompson, G. A.; Zhang, X.] Univ Illinois, Urbana, IL 61801 USA. [Barnett, B. A.; Behari, S.; Blumenfeld, B.; Giurgiu, G.; Maksimovic, P.; Mathis, M.] Johns Hopkins Univ, Baltimore, MD 21218 USA. [Chwalek, T.; Feindt, M.; Gessler, A.; Heck, M.; Heuser, J.; Hirschbuehl, D.; Kreps, M.; Kuhr, T.; Lueck, J.; Marino, C.; Milnik, M.; Morlock, J.; Muller, Th.; Neubauer, S.; Papaikonomou, A.; Peiffer, T.; Renz, M.; Richter, S.; Schmidt, A.; Wagner, W.; Wagner-Kuhr, J.; Weinelt, J.] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Seoul Natl Univ, Seoul 151742, South Korea. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Sungkyunkwan Univ, Suwon 440746, South Korea. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Chonnam Natl Univ, Kwangju 500757, South Korea. [Chang, S. H.; Cho, K.; Jeon, E. J.; Joo, K. K.; Jung, J. E.; Kim, D. H.; Kim, H. S.; Kim, H. W.; Kim, J. E.; Kim, S. B.; Kong, D. J.; Lee, J. S.; Moon, C. S.; Oh, Y. D.; Suh, J. S.; Uozumi, S.; Yang, Y. C.; Yu, I.] Chonbuk Natl Univ, Jeonju 561756, South Korea. [Barbaro-Galtieri, A.; Cerri, A.; Deisher, A.; Fang, H. C.; Haber, C.; Hsu, S. -C.; Lin, C. -J.; Lujan, P.; Lys, J.; Muelmenstaedt, J.; Nielsen, J.; Volobouev, I.; Yao, W. M.] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Houlden, M.; Manca, G.; McNulty, R.; Mehta, A.; Shears, T.] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England. [Beecher, D.; Bizjak, I.; Campanelli, M.; Cerrito, L.; Lancaster, M.; Malik, S.; Nurse, E.; Waters, D.] UCL, London WC1E 6BT, England. [Calancha, C.; Fernandez, J. P.; Gonzalez, O.; Martinez-Ballarin, R.; Redondo, I.; Ttito-Guzman, P.; Vidal, M.] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain. [Bauer, G.; Gomez-Ceballos, G.; Goncharov, M.; Henderson, C.; Makhoul, K.; Paus, C.] MIT, Cambridge, MA 02139 USA. [Beauchemin, P. -H.; Buzatu, A.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada. [Beauchemin, P. -H.; Buzatu, A.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada. [Beauchemin, P. -H.; Buzatu, A.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] Univ Toronto, Toronto, ON M5S 1A7, Canada. [Beauchemin, P. -H.; Buzatu, A.; MacQueen, D.; Pashapour, S.; Roy, P.; Sinervo, P.; Snihur, R.; Stelzer, B.; Stelzer-Chilton, O.; Warburton, A.; Williams, G.] TRIUMF, Vancouver, BC V6T 2A3, Canada. [Amidei, D.; Campbell, M.; Cully, J. C.; Gerdes, D.; Mietlicki, D.; Strycker, G. L.; Tecchio, M.; Varganov, A.; Wright, T.] Univ Michigan, Ann Arbor, MI 48109 USA. [Bromberg, C.; Gunay-Unalan, Z.; Hussein, M.; Huston, J.; Miller, R.; Tollefson, K.] Michigan State Univ, E Lansing, MI 48824 USA. [Shreyber, I.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Gold, M.; Gorelov, I.; Seidel, S.; Strologas, J.; Vogel, M.] Univ New Mexico, Albuquerque, NM 87131 USA. [Anastassov, A.; Schmitt, M.; Stentz, D.] Northwestern Univ, Evanston, IL 60208 USA. [Hughes, R. E.; Lannon, K.; Parks, B.; Slaunwhite, J.; Winer, B. L.; Wolfe, H.] Ohio State Univ, Columbus, OH 43210 USA. [Nakano, I.; Takashima, R.; Tanaka, R.] Okayama Univ, Okayama 7008530, Japan. [Kato, Y.; Okusawa, T.; Seiya, Y.; Wakisaka, T.; Yamamoto, K.; Yoshida, T.] Osaka City Univ, Osaka 588, Japan. [Azfar, F.; Farrington, S.; Hays, C.; Linacre, J.; Malde, S.; Oakes, L.; Rademacker, J.; Renton, P.] Univ Oxford, Oxford OX1 3RH, England. [Amerio, S.; Bisello, D.; Busetto, G.; Compostella, G.; d'Errico, M.; Dorigo, T.; Gresele, A.; Lazzizzera, I.; Lucchesi, D.; Griso, S. Pagan] Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy. [Amerio, S.; Bisello, D.; Busetto, G.; d'Errico, M.; Gresele, A.; Lazzizzera, I.; Lucchesi, D.; Griso, S. Pagan] Univ Padua, I-35131 Padua, Italy. [Ciobanu, C. I.; Corbo, M.; di Giovanni, G. P.; Ershaidat, N.; Savoy-Navarro, A.; Tourneur, S.] Univ Paris 06, CNRS, IN2P3, LPNHE,UMR7585, F-75252 Paris, France. [Canepa, A.; Heijboer, A.; Heinrich, J.; Keung, J.; Kroll, J.; Lipeles, E.; Lockyer, N. S.; Neu, C.; Pianori, E.; Rodriguez, T.; Thomson, E.; Tu, Y.; Wagner, P.; Whiteson, D.; Williams, H. H.] Univ Penn, Philadelphia, PA 19104 USA. [Barria, P.; Bedeschi, F.; Bellettini, G.; Carosi, R.; Catastini, P.; Cavaliere, V.; Chiarelli, G.; Ciocci, M. A.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Di Ruzza, B.; Donati, S.; Ferrazza, C.; Garosi, P.; Giannetti, P.; Giunta, M.; Introzzi, G.; Lami, S.; Latino, G.; Leone, S.; Menzione, A.; Morello, M. J.; Piacentino, G.; Punzi, G.; Ristori, L.; Sartori, L.; Scribano, A.; Scuri, F.; Sforza, F.; Squillacioti, P.; Trovato, M.; Turini, N.; Vataga, E.; Volpi, G.] Ist Nazl Fis Nucl, I-56127 Pisa, Italy. [Bellettini, G.; Crescioli, F.; Dell'Orso, M.; Di Canto, A.; Donati, S.; Punzi, G.; Sforza, F.; Volpi, G.] Univ Pisa, I-56127 Pisa, Italy. [Barria, P.; Catastini, P.; Cavaliere, V.; Ciocci, M. A.; Garosi, P.; Latino, G.; Scribano, A.; Squillacioti, P.; Turini, N.] Univ Siena, I-56127 Pisa, Italy. [Ferrazza, C.; Trovato, M.; Vataga, E.] Scuola Normale Super Pisa, I-56127 Pisa, Italy. [Boudreau, J.; Gibson, K.; Hartz, M.; Liu, C.; Rahaman, A.; Shepard, P. F.] Univ Pittsburgh, Pittsburgh, PA 15260 USA. [Apresyan, A.; Barnes, V. E.; Bortoletto, D.; Flanagan, G.; Garfinkel, A. F.; Jones, M.; Laasanen, A. T.; Margaroli, F.; Potamianos, K.; Ranjan, N.; Sedov, A.] Purdue Univ, W Lafayette, IN 47907 USA. [Bodek, A.; Boisvert, V.; Budd, H. S.; Chung, Y. S.; de Barbaro, P.; Gimmell, J. L.; Han, B. -Y.; Han, J. Y.; McFarland, K. S.; Sakumoto, W. K.] Univ Rochester, Rochester, NY 14627 USA. [Bhatti, A.; Demortier, L.; Gallinaro, M.; Goulianos, K.; Lungu, G.; Mesropian, C.] Rockefeller Univ, New York, NY 10021 USA. [De Cecco, S.; Giagu, S.; Iori, M.; Mastrandrea, P.; Rescigno, M.] Ist Nazl Fis Nucl, Sez Roma 1, Milan, Italy. [Iori, M.] Univ Roma La Sapienza, I-00185 Rome, Italy. [Dube, S.; Halkiadakis, E.; Hare, D.; Hidas, D.; Lath, A.; Somalwar, S.] Rutgers State Univ, Piscataway, NJ 08855 USA. [Asaadi, J.; Aurisano, A.; Elagin, A.; Eusebi, R.; Kamon, T.; Khotilovich, V.; Lee, E.; Lee, S. W.; McIntyre, P.; Safonov, A.; Toback, D.; Weinberger, M.] Texas A&M Univ, College Stn, TX 77843 USA. [Cauz, D.; Giordani, M.; Pagliarone, C.; Pauletta, G.; Penzo, A.; Rossi, M.; Santi, L.; Totaro, P.; Zanetti, A.] Ist Nazl Fis Nucl Trieste Udine, I-34100 Trieste, Italy. [Giordani, M.; Pauletta, G.; Santi, L.; Totaro, P.] Univ Trieste Udine, I-33100 Udine, Italy. [Hara, K.; Kim, S. H.; Kurata, M.; Miyake, H.; Nagai, Y.; Naganoma, J.; Nakamura, K.; Sato, K.; Shimojima, M.; Takeuchi, Y.; Tomura, T.; Ukegawa, F.] Univ Tsukuba, Tsukuba, Ibaraki 305, Japan. [Hare, M.; Napier, A.; Rolli, S.; Sliwa, K.; Whitehouse, B.] Tufts Univ, Medford, MA 02155 USA. [Arisawa, T.; Ebina, K.; Kimura, N.; Kondo, K.; Yorita, K.] Waseda Univ, Tokyo 169, Japan. [Harr, R. F.; Karchin, P. E.; Kulkarni, N. P.; Mattson, M. E.; Shalhout, S. Z.] Wayne State Univ, Detroit, MI 48201 USA. [Bellinger, J.; Carlsmith, D.; Chung, W. H.; Herndon, M.; Nett, J.; Pondrom, L.; Pursley, J.; Ramakrishnan, V.; Shon, Y.] Univ Wisconsin, Madison, WI 53706 USA. [Almenar, C. Cuenca; Feild, R. G.; Husemann, U.; Loginov, A.; Martin, A.; Schmidt, M. P.; Stanitzki, M.; Tipton, P.] Yale Univ, New Haven, CT 06520 USA. RP Aaltonen, T (reprint author), Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland. RI Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; Scodellaro, Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; vilar, rocio/P-8480-2014; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012; Muelmenstaedt, Johannes/K-2432-2015; Ivanov, Andrew/A-7982-2013; Kim, Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; Moon, Chang-Seong/J-3619-2014; Ruiz, Alberto/E-4473-2011; manca, giulia/I-9264-2012; Punzi, Giovanni/J-4947-2012; Amerio, Silvia/J-4605-2012; Annovi, Alberto/G-6028-2012; Zeng, Yu/C-1438-2013; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Warburton, Andreas/N-8028-2013 OI Hays, Chris/0000-0003-2371-9723; Farrington, Sinead/0000-0001-5350-9271; Robson, Aidan/0000-0002-1659-8284; Gallinaro, Michele/0000-0003-1261-2277; Torre, Stefano/0000-0002-7565-0118; Turini, Nicola/0000-0002-9395-5230; Osterberg, Kenneth/0000-0003-4807-0414; Giordani, Mario/0000-0002-0792-6039; Casarsa, Massimo/0000-0002-1353-8964; Latino, Giuseppe/0000-0002-4098-3502; iori, maurizio/0000-0002-6349-0380; Vidal Marono, Miguel/0000-0002-2590-5987; Lancaster, Mark/0000-0002-8872-7292; Nielsen, Jason/0000-0002-9175-4419; Jun, Soon Yung/0000-0003-3370-6109; Toback, David/0000-0003-3457-4144; Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli, Florencia/0000-0001-6361-2117; Lami, Stefano/0000-0001-9492-0147; Margaroli, Fabrizio/0000-0002-3869-0153; Group, Robert/0000-0002-4097-5254; Simonenko, Alexander/0000-0001-6580-3638; Scodellaro, Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Muelmenstaedt, Johannes/0000-0003-1105-6678; Ivanov, Andrew/0000-0002-9270-5643; Moon, Chang-Seong/0000-0001-8229-7829; Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052; Annovi, Alberto/0000-0002-4649-4398; Warburton, Andreas/0000-0002-2298-7315 NR 14 TC 5 Z9 5 U1 1 U2 14 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 19 PY 2010 VL 104 IS 11 AR 111802 DI 10.1103/PhysRevLett.104.111802 PG 7 WC Physics, Multidisciplinary SC Physics GA 572BX UT WOS:000275802600006 ER PT J AU Lee, J Tsang, MB Bazin, D Coupland, D Henzl, V Henzlova, D Kilburn, M Lynch, WG Rogers, AM Sanetullaev, A Signoracci, A Sun, ZY Youngs, M Chae, KY Charity, RJ Cheung, HK Famiano, M Hudan, S O'Malley, P Peters, WA Schmitt, K Shapira, D Sobotka, LG AF Lee, Jenny Tsang, M. B. Bazin, D. Coupland, D. Henzl, V. Henzlova, D. Kilburn, M. Lynch, W. G. Rogers, A. M. Sanetullaev, A. Signoracci, A. Sun, Z. Y. Youngs, M. Chae, K. Y. Charity, R. J. Cheung, H. K. Famiano, M. Hudan, S. O'Malley, P. Peters, W. A. Schmitt, K. Shapira, D. Sobotka, L. G. TI Neutron-Proton Asymmetry Dependence of Spectroscopic Factors in Ar Isotopes SO PHYSICAL REVIEW LETTERS LA English DT Article ID NUCLEI; MATTER; SHELL; MODEL AB Spectroscopic factors have been extracted for proton-rich (34)Ar and neutron-rich (46)Ar using the (p, d) neutron transfer reaction. The experimental results show little reduction of the ground state neutron spectroscopic factor of the proton-rich nucleus (34)Ar compared to that of (46)Ar. The results suggest that correlations, which generally reduce such spectroscopic factors, do not depend strongly on the neutronproton asymmetry of the nucleus in this isotopic region as was reported in knockout reactions. The present results are consistent with results from systematic studies of transfer reactions but inconsistent with the trends observed in knockout reaction measurements. C1 [Lee, Jenny; Tsang, M. B.; Bazin, D.; Coupland, D.; Henzl, V.; Henzlova, D.; Kilburn, M.; Lynch, W. G.; Rogers, A. M.; Sanetullaev, A.; Signoracci, A.; Sun, Z. Y.; Youngs, M.] Michigan State Univ, NSCL, E Lansing, MI 48824 USA. [Lee, Jenny; Tsang, M. B.; Bazin, D.; Coupland, D.; Henzl, V.; Henzlova, D.; Kilburn, M.; Lynch, W. G.; Rogers, A. M.; Sanetullaev, A.; Signoracci, A.; Sun, Z. Y.; Youngs, M.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Sun, Z. Y.] CAS, Inst Modern Phys, Lanzhou 730000, Peoples R China. [Chae, K. Y.; Schmitt, K.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Charity, R. J.; Sobotka, L. G.] Washington Univ, Dept Chem, St Louis, MO 63130 USA. [Cheung, H. K.] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China. [Famiano, M.] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA. [Hudan, S.] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA. [O'Malley, P.; Peters, W. A.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. [Shapira, D.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Lee, J (reprint author), Michigan State Univ, NSCL, E Lansing, MI 48824 USA. RI Peters, William/B-3214-2012; Sun, Zhiyu/B-3922-2012; Lynch, William/I-1447-2013 OI Peters, William/0000-0002-3022-4924; Sun, Zhiyu/0000-0002-7667-3178; Lynch, William/0000-0003-4503-176X FU National Science Foundation [PHY-0606007]; Chinese University of Hong Kong; Chinese Academy of Sciences; MSU FX The authors would like to thank Professors B. A. Brown and J. Tostevin for the use of the programs Oxbash and TWOFNR. This work is supported by the National Science Foundation under Grant No. PHY-0606007. Cheung acknowledges the support of the Summer Undergraduate Research Experience (SURE) program sponsored by the Chinese University of Hong Kong. Sun acknowledges support from the Chinese Academy of Sciences and MSU during his stay at NSCL in 2008. NR 27 TC 47 Z9 47 U1 1 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 19 PY 2010 VL 104 IS 11 AR 112701 DI 10.1103/PhysRevLett.104.112701 PG 4 WC Physics, Multidisciplinary SC Physics GA 572BX UT WOS:000275802600012 PM 20366470 ER PT J AU Parker, CV Pushp, A Pasupathy, AN Gomes, KK Wen, JS Xu, ZJ Ono, S Gu, G Yazdani, A AF Parker, Colin V. Pushp, Aakash Pasupathy, Abhay N. Gomes, Kenjiro K. Wen, Jinsheng Xu, Zhijun Ono, Shimpei Gu, Genda Yazdani, Ali TI Nanoscale Proximity Effect in the High-Temperature Superconductor Bi2Sr2CaCu2O8+delta Using a Scanning Tunneling Microscope SO PHYSICAL REVIEW LETTERS LA English DT Article ID ATOMIC-SCALE AB High-temperature cuprate superconductors exhibit extremely local nanoscale phenomena and strong sensitivity to doping. While other experiments have looked at nanoscale interfaces between layers of different dopings, we focus on the interplay between naturally inhomogeneous nanoscale regions. Using scanning tunneling microscopy to carefully track the same region of the sample as a function of temperature, we show that regions with weak superconductivity can persist to elevated temperatures if bordered by regions of strong superconductivity. This suggests that it may be possible to increase the maximum possible transition temperature by controlling the distribution of dopants. C1 [Parker, Colin V.; Pushp, Aakash; Pasupathy, Abhay N.; Gomes, Kenjiro K.; Yazdani, Ali] Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA. [Pushp, Aakash] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [Parker, Colin V.; Pushp, Aakash; Pasupathy, Abhay N.; Gomes, Kenjiro K.; Yazdani, Ali] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA. [Wen, Jinsheng; Xu, Zhijun; Gu, Genda] Brookhaven Natl Lab, Upton, NY 11973 USA. [Ono, Shimpei] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan. RP Parker, CV (reprint author), Princeton Univ, Joseph Henry Labs, Princeton, NJ 08544 USA. RI Wen, Jinsheng/F-4209-2010; Pushp, Aakash/G-6626-2011; xu, zhijun/A-3264-2013 OI Wen, Jinsheng/0000-0001-5864-1466; xu, zhijun/0000-0001-7486-2015 NR 20 TC 20 Z9 20 U1 0 U2 14 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 19 PY 2010 VL 104 IS 11 AR 117001 DI 10.1103/PhysRevLett.104.117001 PG 4 WC Physics, Multidisciplinary SC Physics GA 572BX UT WOS:000275802600039 PM 20366497 ER PT J AU Pennycook, TJ Beck, MJ Varga, K Varela, M Pennycook, SJ Pantelides, ST AF Pennycook, Timothy J. Beck, Matthew J. Varga, Kalman Varela, Maria Pennycook, Stephen J. Pantelides, Sokrates T. TI Origin of Colossal Ionic Conductivity in Oxide Multilayers: Interface Induced Sublattice Disorder SO PHYSICAL REVIEW LETTERS LA English DT Article ID MOLECULAR-DYNAMICS; HETEROSTRUCTURES AB Oxide ionic conductors typically operate at high temperatures, which limits their usefulness. Colossal room-temperature ionic conductivity was recently discovered in multilayers of yttria-stabilized zirconia (YSZ) and SrTiO3. Here we report density-functional calculations that trace the origin of the effect to a combination of lattice-mismatch strain and O-sublattice incompatibility. Strain alone in bulk YSZ enhances O mobility at high temperatures by inducing extreme O disorder. In multilayer structures, O-sublattice incompatibility causes the same extreme disorder at room temperature. C1 [Pennycook, Timothy J.; Beck, Matthew J.; Varga, Kalman; Pennycook, Stephen J.; Pantelides, Sokrates T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Pennycook, Timothy J.; Varela, Maria; Pennycook, Stephen J.; Pantelides, Sokrates T.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. RP Pennycook, TJ (reprint author), Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. EM t.pennycook@vanderbilt.edu RI Varela, Maria/H-2648-2012; Varga, Kalman/A-7102-2013; Pennycook, Timothy/B-4946-2014; Varela, Maria/E-2472-2014; Albe, Karsten/F-1139-2011 OI Pennycook, Timothy/0000-0002-0008-6516; Varela, Maria/0000-0002-6582-7004; FU U.S. Department of Energy [DE-FG02-09ER46554]; McMinn Endowment FX The authors thank Jacobo Santamaria and his group for fruitful discussions. Research at Oak Ridge National Laboratory was sponsored by the Division of Materials Sciences and Engineering of the U.S. Department of Energy. Research at Vanderbilt was supported in part by the U.S. Department of Energy Grant DE-FG02-09ER46554 and the McMinn Endowment. Computations were performed at the National Energy Research Scientific Computing Center at Lawrence Berkeley National Laboratory. NR 18 TC 57 Z9 57 U1 3 U2 55 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 19 PY 2010 VL 104 IS 11 AR 115901 DI 10.1103/PhysRevLett.104.115901 PG 4 WC Physics, Multidisciplinary SC Physics GA 572BX UT WOS:000275802600028 PM 20366486 ER PT J AU Zhang, LX Song, Q Zhang, SB AF Zhang, Lixin Song, Qing Zhang, S. B. TI Exceptionally Strong Hydrogen Bonds Affect the Surface Energy of Colloidal Nanocrystals: Methylamine and Water Adsorption on PbS SO PHYSICAL REVIEW LETTERS LA English DT Article ID INITIO MOLECULAR-DYNAMICS; NANOWIRES; SILICON; ATTACHMENT; CHEMISTRY; GERMANIUM AB First-principles calculations for colloidal PbS nanocrystals reveal a sizable dependence of surface energy on the solution environment. In vacuum, the bare (100) surface is more stable than the bare (111) surface. Methylamine adsorption, however, preferentially lowers the energy of the unreconstructed (111), but the lowering is insufficient to reverse the energy order. Methylamine coadsorption with water can make the (111) surface most stable. The energy lowering is explained in terms of an exceptionally strong hydrogen bonding at the solution-solid interface. C1 [Zhang, Lixin; Song, Qing] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Zhang, S. B.] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA. RP Zhang, LX (reprint author), Nankai Univ, Tianjin 300071, Peoples R China. RI Krausnick, Jennifer/D-6291-2013; Zhang, Shengbai/D-4885-2013 OI Zhang, Shengbai/0000-0003-0833-5860 FU DOE BES [DE-AC36-08GO28308] FX This work was supported by the DOE BES under Contract No. DE-AC36-08GO28308 to NREL. NR 26 TC 11 Z9 11 U1 0 U2 21 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 19 PY 2010 VL 104 IS 11 AR 116101 DI 10.1103/PhysRevLett.104.116101 PG 4 WC Physics, Multidisciplinary SC Physics GA 572BX UT WOS:000275802600029 PM 20366487 ER PT J AU Inskeep, WP Rusch, DB Jay, ZJ Herrgard, MJ Kozubal, MA Richardson, TH Macur, RE Hamamura, N Jennings, RD Fouke, BW Reysenbach, AL Roberto, F Young, M Schwartz, A Boyd, ES Badger, JH Mathur, EJ Ortmann, AC Bateson, M Geesey, G Frazier, M AF Inskeep, William P. Rusch, Douglas B. Jay, Zackary J. Herrgard, Markus J. Kozubal, Mark A. Richardson, Toby H. Macur, Richard E. Hamamura, Natsuko Jennings, Ryan deM. Fouke, Bruce W. Reysenbach, Anna-Louise Roberto, Frank Young, Mark Schwartz, Ariel Boyd, Eric S. Badger, Jonathan H. Mathur, Eric J. Ortmann, Alice C. Bateson, Mary Geesey, Gill Frazier, Marvin TI Metagenomes from High-Temperature Chemotrophic Systems Reveal Geochemical Controls on Microbial Community Structure and Function SO PLOS ONE LA English DT Article ID YELLOWSTONE-NATIONAL-PARK; CRENARCHAEON PYROBACULUM-AEROPHILUM; ARCHAEON ACIDIANUS-AMBIVALENS; BACTERIAL NITRATE REDUCTASES; MAMMOTH HOT-SPRINGS; HYPERTHERMOPHILIC ARCHAEON; GENOME SEQUENCE; GEOTHERMAL SPRINGS; SULFUR OXIDATION; SP NOV. AB The Yellowstone caldera contains the most numerous and diverse geothermal systems on Earth, yielding an extensive array of unique high-temperature environments that host a variety of deeply-rooted and understudied Archaea, Bacteria and Eukarya. The combination of extreme temperature and chemical conditions encountered in geothermal environments often results in considerably less microbial diversity than other terrestrial habitats and offers a tremendous opportunity for studying the structure and function of indigenous microbial communities and for establishing linkages between putative metabolisms and element cycling. Metagenome sequence (14-15,000 Sanger reads per site) was obtained for five high-temperature (>65 degrees C) chemotrophic microbial communities sampled from geothermal springs (or pools) in Yellowstone National Park (YNP) that exhibit a wide range in geochemistry including pH, dissolved sulfide, dissolved oxygen and ferrous iron. Metagenome data revealed significant differences in the predominant phyla associated with each of these geochemical environments. Novel members of the Sulfolobales are dominant in low pH environments, while other Crenarchaeota including distantly-related Thermoproteales and Desulfurococcales populations dominate in suboxic sulfidic sediments. Several novel archaeal groups are well represented in an acidic (pH 3) Fe-oxyhydroxide mat, where a higher O(2) influx is accompanied with an increase in archaeal diversity. The presence or absence of genes and pathways important in S oxidation-reduction, H(2)-oxidation, and aerobic respiration (terminal oxidation) provide insight regarding the metabolic strategies of indigenous organisms present in geothermal systems. Multiple-pathway and protein-specific functional analysis of metagenome sequence data corroborated results from phylogenetic analyses and clearly demonstrate major differences in metabolic potential across sites. The distribution of functional genes involved in electron transport is consistent with the hypothesis that geochemical parameters (e.g., pH, sulfide, Fe, O(2)) control microbial community structure and function in YNP geothermal springs. C1 [Inskeep, William P.; Jay, Zackary J.; Kozubal, Mark A.; Macur, Richard E.; Jennings, Ryan deM.; Young, Mark; Boyd, Eric S.; Bateson, Mary; Geesey, Gill] Montana State Univ, Thermal Biol Inst, Bozeman, MT 59717 USA. [Inskeep, William P.; Jay, Zackary J.; Kozubal, Mark A.; Macur, Richard E.; Jennings, Ryan deM.] Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA. [Rusch, Douglas B.; Badger, Jonathan H.; Frazier, Marvin] J Craig Venter Inst, Rockville, MD USA. [Herrgard, Markus J.; Richardson, Toby H.; Schwartz, Ariel; Mathur, Eric J.] Synthet Genom Inc, La Jolla, CA USA. [Hamamura, Natsuko; Reysenbach, Anna-Louise] Ehime Univ, Ctr Marine Environm Studies, Matsuyama, Ehime, Japan. [Fouke, Bruce W.] Univ Illinois, Urbana, IL 61801 USA. [Roberto, Frank] Idaho Natl Lab, Idaho Falls, ID USA. [Young, Mark; Bateson, Mary] Montana State Univ, Dept Plant Sci & Plant Pathol, Bozeman, MT 59717 USA. [Boyd, Eric S.; Geesey, Gill] Montana State Univ, Dept Microbiol, Bozeman, MT 59717 USA. [Ortmann, Alice C.] Univ S Alabama, Dept Marine Sci, Mobile, AL 36688 USA. RP Inskeep, WP (reprint author), Montana State Univ, Thermal Biol Inst, Bozeman, MT 59717 USA. EM binskeep@montana.edu; drusch@jcvi.org RI Hamamura, Natsuko/D-8837-2013 FU U.S. National Aeronautics and Space Administration [NAG5-8807, NNG04GR46G]; U.S. National Science Foundation [BIO 0342269]; Montana Agricultural Experiment Station [911398] FX This work was supported by the Thermal Biology Institute via projects from the U.S. National Aeronautics and Space Administration (Exobiology Program NAG5-8807, NNG04GR46G), Dr. William Apel (Idaho National Laboratory, Idaho Falls, Idaho, USA), the U.S. National Science Foundation Research Coordination Network (BIO 0342269) focused on Yellowstone National Park, and the Montana Agricultural Experiment Station (Project 911398). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 101 TC 88 Z9 88 U1 6 U2 56 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAR 19 PY 2010 VL 5 IS 3 AR e9773 DI 10.1371/journal.pone.0009773 PG 15 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 572EH UT WOS:000275809700012 PM 20333304 ER PT J AU Colman, JJ Roussel-Dupre, RA Triplett, L AF Colman, J. J. Roussel-Dupre, R. A. Triplett, L. TI Temporally self-similar electron distribution functions in atmospheric breakdown: The thermal runaway regime SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID GAMMA-RAY FLASHES; DIFFUSION-COEFFICIENT; CROSS-SECTIONS; VIBRATIONAL POPULATIONS; N-2 EMISSIONS; AIR BREAKDOWN; HIGH VALUES; DRY AIR; NITROGEN; IONIZATION AB Detailed Boltzmann kinetic calculations of the electron distribution functions resulting from thermal runaway in a constant electric field are presented. Thermal runaway is considered to occur when an initially thermal electron is accelerated above the 150 eV peak in the dynamical friction force in air and becomes a runaway electron. We investigate the role of runaway breakdown in situations where thermal runaway, as well as conventional breakdown, is occurring. The electric field strengths studied span the range from the threshold for runaway breakdown in air (similar to 0.3 MV/m at sea level) through conventional breakdown (2.4-3.2 MV/m at sea level) and exceeding the Dreicer field (25 MV/m at sea level), above which all electrons are runaways. We initiate our simulations with a population of pseudothermal electrons or with a combination of thermal and runaway (similar to 1 MeV) electrons. We find that when thermal runaway occurs the self-similar electron distribution function is identical in the presence or absence of a seed runaway population. We show that attempts to obtain the electric field from remote measurements of optical line ratios are ambiguous both in the context of the absolute field and in the underlying kinetics. By considering the runaway electrons as a separate population we conclude that the avalanche rate of low-energy electrons is equivalent to that of runaway electrons at a reduced field of 140 Td (3.8 MV/m at standard temperature and pressure). Above that field the conventional avalanche rate will control the avalanche rate of the entire population. Below that field the runaway avalanche rate will control the avalanche rate of the entire population. C1 [Roussel-Dupre, R. A.] SciTech Solut LLC, Santa Fe, NM 87506 USA. [Triplett, L.] Los Alamos Natl Lab, EES Div, Los Alamos, NM 87545 USA. [Colman, J. J.] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA. RP Colman, JJ (reprint author), USAF, Res Lab, Space Vehicles Directorate, Kirtland AFB, NM 87117 USA. EM jonah.colman@kirtland.af.mil FU NNSA; AFRL FX This research was supported by the NNSA and AFRL; we gratefully acknowledge that support. NR 63 TC 12 Z9 12 U1 1 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD MAR 18 PY 2010 VL 115 AR A00E16 DI 10.1029/2009JA014509 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 572VD UT WOS:000275860700001 ER PT J AU Grozdanov, D Herascu, N Reinot, T Jankowiak, R Zazubovich, V AF Grozdanov, Daniel Herascu, Nicoleta Reinot, Tonu Jankowiak, Ryszard Zazubovich, Valter TI Low-Temperature Protein Dynamics of the B800 Molecules in the LH2 Light-Harvesting Complex: Spectral Hole Burning Study and Comparison with Single Photosynthetic Complex Spectroscopy SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID HYPERQUENCHED GLASSY WATER; DEPENDENT ELECTRON-PHONON; ACIDOPHILA STRAIN 10050; RED ANTENNA STATES; RHODOPSEUDOMONAS-ACIDOPHILA; PURPLE BACTERIA; ENERGY-TRANSFER; GROWTH-KINETICS; PHOTOSYSTEM-I; GREEN PLANTS AB Previously published and new spectral hole burning (SHB) data on the B800 band of LH2 light-harvesting antenna complex of Rps. acidophila are analyzed in light of recent single photosynthetic complex spectroscopy (SPCS) results (for a review, see Berlin et al. Phys. Life Rev. 2007, 4, 64.). It is demonstrated that, in general, SHB-related phenomena observed for the B800 hand are in qualitative agreement with the SPCS data and the protein models involving multiwell multitier protein energy landscapes. Regarding the quantitative agreement, we argue that the single-molecule behavior associated with the fastest Spectral diffusion (smallest barrier) tier of the protein energy landscape is inconsistent with the SHB data, The latter discrepancy can be attributed to SPCS probing not only the dynamics of of the protein complex per Se, but also that of the Surrounding amorphous host and/or of the host-protein interface. It is argued that SHB (once improved models are developed) should also be able to provide the average magnitudes and probability distributions of light-induced spectral shifts and Could be used to determine whether SPCS probes,I set of protein complexes that are both intact and statistically relevant. SHB results are consistent with the B800 -> B850 energy-transfer models including consideration of the whole B850 density of states. C1 [Grozdanov, Daniel; Herascu, Nicoleta; Zazubovich, Valter] Concordia Univ, Dept Phys, Montreal, PQ H4B 1R6, Canada. [Reinot, Tonu] US DOE, Ames Lab, Ames, IA 50011 USA. [Reinot, Tonu] US DOE, IPRT, Ames, IA 50011 USA. [Jankowiak, Ryszard] Kansas State Univ, Dept Chem, Manhattan, KS 66506 USA. RP Zazubovich, V (reprint author), Concordia Univ, Dept Phys, 7141 Sherbrooke St W, Montreal, PQ H4B 1R6, Canada. EM vzazubov@alcor.concordia.ca FU NSERC; NSF [CHE-0907958] FX This research was supported by NSERC, including a Discovery grant (V.Z. and N.H.) and all Undergraduate Summer Research Fellowship (D.G.). R.J. was Supported by all NSF grant (CHE-0907958). The authors are thankful to Mike Reppert (KSU) for fruitful discussions. NR 59 TC 13 Z9 13 U1 1 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD MAR 18 PY 2010 VL 114 IS 10 BP 3426 EP 3438 DI 10.1021/jp9089358 PG 13 WC Chemistry, Physical SC Chemistry GA 565XB UT WOS:000275328400003 PM 20166717 ER PT J AU Govindasamy, A Muthukumar, K Yu, JJ Xu, Y Guliants, VV AF Govindasamy, Agalya Muthukumar, Kaliappan Yu, Junjun Xu, Ye Guliants, Vadim V. TI Adsorption of Propane, Isopropyl, and Hydrogen on Cluster Models of the M1 Phase of Mo-V-Te-Nb-O Mixed Metal Oxide Catalyst SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID INITIO MOLECULAR-DYNAMICS; OXIDATIVE DEHYDROGENATION; SELECTIVE AMMOXIDATION; ACTIVE-CENTERS; (AMM)OXIDATION CATALYSTS; V2O5(001) SURFACE; VANADIUM-OXIDE; ACRYLIC-ACID; DENSITY; TRANSFORMATION AB The Mo-V-Te-Nb-O mixed metal oxide catalyst possessing the M1 phase structure is uniquely capable of directly converting propane into acrylonitrile. However, the mechanism of this complex eight-electron transformation, which includes a series of oxidative H-abstraction and N-insertion steps, remains poorly Understood. We have conducted a density functional theory study of cluster models of the proposed active and selective site for propane ammoxidation, including the adsorption of propane, isopropyl (CH(3)CHCH(3)) and H which are involved in the first step of this transformation, that is, the methylene C-H bond scission ill propane, on these active site models. Among, the surface oxygen species, the telluryl oxo (Te=O) is found to be the most nucleophilic. Whereas the adsorption of propane is weak regardless of the MO., species involved, isopropyl and H adsorption exhibits strong preference in the order of Te=O > V=O > bridging oxygens > empty Mo apical site, suggesting the importance of TeO(x), species for H abstraction. The adsorption energies of isopropyl and H and consequently the reaction energy of the initial dehydrogenation of propane are strongly dependent on the number of ab planes included in the cluster, which points to the need to employ multilayer cluster models to correctly capture the energetics of surface chemistry on this mixed metal oxide catalyst. C1 [Xu, Ye] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Govindasamy, Agalya; Muthukumar, Kaliappan; Yu, Junjun; Guliants, Vadim V.] Univ Cincinnati, Dept Chem & Mat Engn, Cincinnati, OH 45221 USA. RP Xu, Y (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. EM xuy2@ornl.gov; Vadim.Guliants@uc.edu RI Xu, Ye/B-5447-2009; Kaliappan, Muthukumar/B-2364-2008 OI Xu, Ye/0000-0002-6406-7832; Kaliappan, Muthukumar/0000-0002-8644-7668 FU Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy [DE-FG02-04ER15604] FX This research was supported by the Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy Under Grant No DE-FG02-04ER15604. A portion of this research Was conducted at the Center for Nanophase Materials Sciences, which is sponsored tit Oak Ridge National Laboratory by the Division of Scientific User Facilities, U.S. Department of Energy. We gratefully acknowledge NER-SC, ORNL, and Ohio Supercomputing Center for providing computational resources. NR 47 TC 15 Z9 15 U1 0 U2 18 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1932-7447 J9 J PHYS CHEM C JI J. Phys. Chem. C PD MAR 18 PY 2010 VL 114 IS 10 BP 4544 EP 4549 DI 10.1021/jp910382x PG 6 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 565XD UT WOS:000275328700042 ER PT J AU Myung, ST Lee, KS Yoon, CS Sun, YK Amine, K Yashiro, H AF Myung, Seung-Taek Lee, Ki-Soo Yoon, Chong Seung Sun, Yang-Kook Amine, Khalil Yashiro, Hitoshi TI Effect of AlF3 Coating on rhermal Behavior of Chemically Delithiated Li-0.35[Ni1/3Co1/3Mn1/3]O-2 SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID LITHIUM-ION BATTERIES; LINI0.5MN0.5O2 CATHODE MATERIAL; COATED LINI0.5MN1.5O4 SPINEL; ELECTROCHEMICAL PROPERTIES; SECONDARY BATTERIES; SURFACE MODIFICATION; THERMAL-STABILITY; NATURAL GRAPHITE; CYCLING BEHAVIOR; LICOO2 CATHODE AB The thermal behavior of chemically delithiated Li-0.35[Ni1/3Co1/3Mn1/3]O-2 and the AlF3-coated material was studied ill the temperature range from room temperature to 600 degrees C. Thermogravimetric analysis results showed that the uncoated and the AlF3-COated Li-0.35[Ni1/3Co1/3Mn1/3]O-2 powders experienced distinct Weight loss with increasing temperature, Of which the weight loss was ascribed to oxygen release from the active materials. The released oxygen amount was less for the AlF3-coated Li-0.35[Ni1/3Co1/3Mn1/3]O-2 than the uncoated material, probably due to the blocking of the oxygen evolution by the AlF3 coating. The weight loss was associated with the irreversible phase transformation from a rhombohedral layer (R3 (m) over bar) Structure to a cubic spinel (Fd3m) Structure, as confirmed by in situ high-temperature X-ray diffraction. The reduced oxygen release brought about by the AlF3 coating delayed the phase transformation to the Cubic spinel Structure. This entailed shifts of the main exothermic reactions to higher temperatures for the active material in the presence of ail electrolyte. The AlF3 Coating remained oil the Surface of the active material to 300 degrees C. Thereafter, the layer changed to Li-Al-O with increasing temperature, as observed by the time-of-night secondary ion mass spectroscopy. The improved thermal properties of the chemically delithiated AlF3-coated Li-0.35[Ni1/3Co1/3Mn1/3]O-2 were ascribed to the Suppression of oxygen release from the active material, and this, ill turn, retarded the formation of the Cubic spinel phase. C1 [Myung, Seung-Taek; Yashiro, Hitoshi] Iwate Univ, Dept Chem Engn, Morioka, Iwate 0208551, Japan. [Lee, Ki-Soo; Sun, Yang-Kook] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea. [Yoon, Chong Seung] Hanyang Univ, Dept Mat Sci & Engn, Seoul 133791, South Korea. [Amine, Khalil] Argonne Natl Lab, Electrochem Technol Program, Chem Sci & Engn Div, Argonne, IL 60439 USA. RP Myung, ST (reprint author), Iwate Univ, Dept Chem Engn, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan. EM smyung@iwate-u.ac.jp; yksun@hanyang.ac.kr RI Sun, Yang-Kook/B-9157-2013; Amine, Khalil/K-9344-2013; OI Sun, Yang-Kook/0000-0002-0117-0170; Myung, Seung-Taek/0000-0001-6888-5376 FU WCU; Ministry of education, Science, and Technology [R31-2008-000-10092]; U.S. Department of Energy [AC02-06CH11357] FX The authors thank Mr. S. Takahashi and N. Takahashi, Iwate University, for his helpful assistance in the experimental work. This research Was supported by the WCU (World Class University) program through the Korea Science and Engineering Foundation funded by the Ministry of education, Science, and Technology (R31-2008-000-10092). Argonne is managed by UChicago Argonne, LLC, for the U.S. Department of Energy under Contract DE-AC02-06CH11357. NR 42 TC 51 Z9 52 U1 9 U2 84 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1932-7447 J9 J PHYS CHEM C JI J. Phys. Chem. C PD MAR 18 PY 2010 VL 114 IS 10 BP 4710 EP 4718 DI 10.1021/jp9082322 PG 9 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 565XD UT WOS:000275328700064 ER PT J AU Tao, GH Miller, WH AF Tao, Guohua Miller, William H. TI Semiclassical Description of Electronic Excitation Population Transfer in a Model Photosynthetic System SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS LA English DT Article ID INITIAL-VALUE REPRESENTATION; NONADIABATIC QUANTUM DYNAMICS; MOLECULAR-DYNAMICS; COHERENCE; TEMPERATURE AB Recently, Fleming's group observed direct evidence that:the electronic excitation energy (and population) transfers coherently rather than through incoherent hopping motions in the Fenna-Mathews-Olson pigment protein complex. Ishizaki and Fleming further developed a hierarchy equation approach to describe this excitation population transfer dynamics in a model photosynthetic system. Here, we treat this same model system via the linearized approximation to the semiclassical (SC) initial value representation (IVR) for time correlation functions, in combination with the Meyer-Miller-Stock-Thoss model for the electronic, degrees of freedom. Our approach is able to describe the long-lived quantum coherent dynamics, in excellent agreement with Ishizaki-Fleming's results. Moreover, the advantage of the linearlized SC-IVR approach is that it can be applied to any. molecular model for which classical MD simulations are feasible, all the way. up to a full all-atom MD simulation, while at the same time treating the electronic and nuclear dynamics in a consistent fashion. C1 [Miller, William H.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Miller, WH (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM millerwh@berkeley.edu FU National Science Foundation [CHE-0809073]; Director, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. U.S. Department of Energy [DE-AC02-05CH11231] FX G.T. is grateful to Akihito Ishizaki for many useful discussions. This work was supported by the National Science Foundation Grant No. CHE-0809073 and by the Director, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We also acknowledge a generous allocation of supercomputing time from the National Energy Research Scientific Computing Center (NERSC). NR 23 TC 53 Z9 53 U1 2 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1948-7185 J9 J PHYS CHEM LETT JI J. Phys. Chem. Lett. PD MAR 18 PY 2010 VL 1 IS 6 BP 891 EP 894 DI 10.1021/jz1000825 PG 4 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Atomic, Molecular & Chemical SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 588BM UT WOS:000277041200001 ER PT J AU Goel, S Velizhanin, KA Piryatinski, A Tretiak, S Ivanov, SA AF Goel, Satyender Velizhanin, Kirill A. Piryatinski, Andrei Tretiak, Sergei Ivanov, Sergei A. TI DFT Study of Ligand Binding to Small Gold Clusters SO JOURNAL OF PHYSICAL CHEMISTRY LETTERS LA English DT Article ID DENSITY-FUNCTIONAL THEORY; EFFECTIVE CORE POTENTIALS; ZETA-VALENCE QUALITY; GAUSSIAN-BASIS SETS; THEORETICAL CHEMISTRY; ELECTRONIC-STRUCTURE; AB-INITIO; ENERGY; EXCHANGE; ATOMS AB The Influence of ligands on electronic structure of small gold clusters. (Au-2, Au-4) has been investigated by density functional theory (DFT). Specifically, we study the effect of bonding of four donor ligands (NH3, NMe3, PH3, and PMe3) on cluster geometries and energetics in gas phase and in solution. Performance-of five generations of OFT functionals and five different basis sets is assessed. Our results benchmark the importance of the OFT functional model and polarization functions in the basis set for calculations of ligated gold cluster systems. We obtain NMe3 approximate to NH3 < PH3 < PMe3 order of ligand binding energies and observe shallow potential energy surfaces in all molecules. The latter is likely to lead to a conformational freedom in larger clusters with many ligands in solution at ambient conditions. The study suggests appropriate quantum-chemical methodology to reliably model small noble metal clusters in a realistic ligand environment typically present in experiments. C1 [Tretiak, Sergei; Ivanov, Sergei A.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. [Goel, Satyender; Velizhanin, Kirill A.; Piryatinski, Andrei] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Goel, Satyender; Velizhanin, Kirill A.; Piryatinski, Andrei; Tretiak, Sergei] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. [Goel, Satyender] Univ Cent Florida, NanoSci Technol Ctr, Orlando, FL 32826 USA. RP Ivanov, SA (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87545 USA. EM ivanov@lanl.gov RI Velizhanin, Kirill/C-4835-2008; Piryatinski, Andrei/B-5543-2009; Ivanov, Sergei/B-5505-2011; Tretiak, Sergei/B-5556-2009 OI Tretiak, Sergei/0000-0001-5547-3647 FU Los Alamos Directed Research and Development (LDRD); Center for Nonlinear Studies (CNLS); U.S. Department of Energy [DE-AC52-06NA25396] FX This work was supported by the Los Alamos Directed Research and Development (LDRD) funds. We acknowledge support of the Center for Nonlinear Studies (CNLS). This work was performed, in part, at the Center for Integrated Nanotechnologies, a U.S. Department. of Energy. Office of Basic Energy Sciences, user facility. Los Alamos National Laboratory is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under Contract DE-AC52-06NA25396. NR 43 TC 34 Z9 34 U1 2 U2 28 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1948-7185 J9 J PHYS CHEM LETT JI J. Phys. Chem. Lett. PD MAR 18 PY 2010 VL 1 IS 6 BP 927 EP 931 DI 10.1021/jz1000193 PG 5 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Atomic, Molecular & Chemical SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 588BM UT WOS:000277041200008 ER PT J AU Ma, LJ van der Does, HC Borkovich, KA Coleman, JJ Daboussi, MJ Di Pietro, A Dufresne, M Freitag, M Grabherr, M Henrissat, B Houterman, PM Kang, S Shim, WB Woloshuk, C Xie, XH Xu, JR Antoniw, J Baker, SE Bluhm, BH Breakspear, A Brown, DW Butchko, RAE Chapman, S Coulson, R Coutinho, PM Danchin, EGJ Diener, A Gale, LR Gardiner, DM Goff, S Hammond-Kosack, KE Hilburn, K Hua-Van, A Jonkers, W Kazan, K Kodira, CD Koehrsen, M Kumar, L Lee, YH Li, LD Manners, JM Miranda-Saavedra, D Mukherjee, M Park, G Park, J Park, SY Proctor, RH Regev, A Ruiz-Roldan, MC Sain, D Sakthikumar, S Sykes, S Schwartz, DC Turgeon, BG Wapinski, I Yoder, O Young, S Zeng, QD Zhou, SG Galagan, J Cuomo, CA Kistler, HC Rep, M AF Ma, Li-Jun van der Does, H. Charlotte Borkovich, Katherine A. Coleman, Jeffrey J. Daboussi, Marie-Josee Di Pietro, Antonio Dufresne, Marie Freitag, Michael Grabherr, Manfred Henrissat, Bernard Houterman, Petra M. Kang, Seogchan Shim, Won-Bo Woloshuk, Charles Xie, Xiaohui Xu, Jin-Rong Antoniw, John Baker, Scott E. Bluhm, Burton H. Breakspear, Andrew Brown, Daren W. Butchko, Robert A. E. Chapman, Sinead Coulson, Richard Coutinho, Pedro M. Danchin, Etienne G. J. Diener, Andrew Gale, Liane R. Gardiner, Donald M. Goff, Stephen Hammond-Kosack, Kim E. Hilburn, Karen Hua-Van, Aurelie Jonkers, Wilfried Kazan, Kemal Kodira, Chinnappa D. Koehrsen, Michael Kumar, Lokesh Lee, Yong-Hwan Li, Liande Manners, John M. Miranda-Saavedra, Diego Mukherjee, Mala Park, Gyungsoon Park, Jongsun Park, Sook-Young Proctor, Robert H. Regev, Aviv Carmen Ruiz-Roldan, M. Sain, Divya Sakthikumar, Sharadha Sykes, Sean Schwartz, David C. Turgeon, B. Gillian Wapinski, Ilan Yoder, Olen Young, Sarah Zeng, Qiandong Zhou, Shiguo Galagan, James Cuomo, Christina A. Kistler, H. Corby Rep, Martijn TI Comparative genomics reveals mobile pathogenicity chromosomes in Fusarium SO NATURE LA English DT Article ID MAXIMUM-LIKELIHOOD; OXYSPORUM; GENE; SEQUENCE; TOMATO; EXPRESSION; RESISTANCE; POLYMORPHISM; ANNOTATION; INFECTION AB Fusarium species are among the most important phytopathogenic and toxigenic fungi. To understand the molecular underpinnings of pathogenicity in the genus Fusarium, we compared the genomes of three phenotypically diverse species: Fusarium graminearum, Fusarium verticillioides and Fusarium oxysporum f. sp. lycopersici. Our analysis revealed lineage-specific (LS) genomic regions in F. oxysporum that include four entire chromosomes and account for more than one-quarter of the genome. LS regions are rich in transposons and genes with distinct evolutionary profiles but related to pathogenicity, indicative of horizontal acquisition. Experimentally, we demonstrate the transfer of two LS chromosomes between strains of F. oxysporum, converting a non-pathogenic strain into a pathogen. Transfer of LS chromosomes between otherwise genetically isolated strains explains the polyphyletic origin of host specificity and the emergence of new pathogenic lineages in F. oxysporum. These findings put the evolution of fungal pathogenicity into a new perspective. C1 [Breakspear, Andrew; Gale, Liane R.; Hilburn, Karen; Kistler, H. Corby] Univ Minnesota, USDA ARS, St Paul, MN 55108 USA. [Ma, Li-Jun; Grabherr, Manfred; Chapman, Sinead; Kodira, Chinnappa D.; Koehrsen, Michael; Kumar, Lokesh; Regev, Aviv; Sakthikumar, Sharadha; Sykes, Sean; Wapinski, Ilan; Young, Sarah; Zeng, Qiandong; Galagan, James; Cuomo, Christina A.] Broad Inst, Cambridge, MA 02141 USA. [van der Does, H. Charlotte; Houterman, Petra M.; Jonkers, Wilfried; Rep, Martijn] Univ Amsterdam, NL-1098 XH Amsterdam, Netherlands. [Borkovich, Katherine A.; Li, Liande; Park, Gyungsoon; Sain, Divya] Univ Calif Riverside, Riverside, CA 92521 USA. [Coleman, Jeffrey J.] Univ Arizona, Tucson, AZ 85721 USA. [Daboussi, Marie-Josee; Hua-Van, Aurelie] Univ Paris 11, F-91405 Paris, France. [Di Pietro, Antonio; Carmen Ruiz-Roldan, M.] Univ Cordoba, E-14071 Cordoba, Spain. [Freitag, Michael] Oregon State Univ, Corvallis, OR 97331 USA. [Henrissat, Bernard; Coutinho, Pedro M.; Danchin, Etienne G. J.] Univ Aix Marseille, CNRS, F-13628 Aix En Provence, France. [Kang, Seogchan; Park, Sook-Young] Penn State Univ, University Pk, PA 16802 USA. [Shim, Won-Bo; Mukherjee, Mala] Texas A&M Univ, College Stn, TX 77843 USA. [Woloshuk, Charles; Xu, Jin-Rong; Bluhm, Burton H.] Purdue Univ, W Lafayette, IN 47907 USA. [Xie, Xiaohui] Univ Calif Irvine, Irvine, CA 92697 USA. [Antoniw, John; Hammond-Kosack, Kim E.] Ctr Sustainable Pest & Dis Management, Harpenden AL5 2JQ, Herts, England. [Baker, Scott E.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Brown, Daren W.; Butchko, Robert A. E.; Proctor, Robert H.] USDA ARS NCAUR, Peoria, IL 61604 USA. [Coulson, Richard] European Bioinformat Inst, Cambridge CB10 1SD, England. [Diener, Andrew] Univ Calif Los Angeles, Los Angeles, CA 90095 USA. [Gardiner, Donald M.; Kazan, Kemal; Manners, John M.] CSIRO Plant Ind, Brisbane, Qld 4067, Australia. [Goff, Stephen] Univ Arizona, Inst BIO5, Tucson, AZ 85721 USA. [Lee, Yong-Hwan; Park, Jongsun] Seoul Natl Univ, Seoul 151742, South Korea. [Miranda-Saavedra, Diego] Cambridge Inst Med Res, Cambridge CB2 0XY, England. [Schwartz, David C.; Zhou, Shiguo] Univ Wisconsin, Madison, WI 53706 USA. [Turgeon, B. Gillian] Cornell Univ, Ithaca, NY 14853 USA. RP Kistler, HC (reprint author), Univ Minnesota, USDA ARS, St Paul, MN 55108 USA. EM hckist@umn.edu; m.rep@uva.nl RI Di Pietro, Antonio/K-9220-2014; Gardiner, Donald/A-1297-2010; li, liande/C-9985-2011; Biology, Transformational/D-5787-2011; Miranda-Saavedra, Diego/C-2707-2012; Manners, John/A-4922-2008; Kazan, Kemal/B-8032-2008; Henrissat, Bernard/J-2475-2012; Danchin, Etienne/A-6648-2008; Zhou, Shiguo/B-3832-2011; Hua-Van, Aurelie/N-3495-2013; Coleman, Jeffrey/E-2981-2015; OI Di Pietro, Antonio/0000-0001-5930-5763; Ma, Li-Jun/0000-0002-2733-3708; Gardiner, Donald/0000-0002-2162-8716; Danchin, Etienne/0000-0003-4146-5608; Zhou, Shiguo/0000-0001-7421-2506; Galagan, James/0000-0003-0542-3291; Coleman, Jeffrey/0000-0001-8579-1996; Ruiz Roldan, M. Carmen/0000-0003-3427-2998; Broz, Karen/0000-0001-7928-7216; Park, Jongsun/0000-0003-0786-4701; Kistler, Harold/0000-0001-5312-6297; Kang, Seogchan/0000-0003-2291-5634; Cuomo, Christina/0000-0002-5778-960X FU USDA's National Institute of Food and Agriculture [2005-35600-16405] FX The 4 X sequence of F. verticillioides was provided by Syngenta Biotechnology Inc. Generation of the other 4 X sequence of F. verticillioides and 6.83 sequence of F. oxysporum f. sp. lycopersici was funded by the National Research Initiative of USDA's National Institute of Food and Agriculture through the Microbial Genome Sequencing Program (2005-35600-16405) and conducted by the Broad Institute Sequencing Platform. Wayne Xu and the Minnesota Supercomputing Institute for Advanced Computational Research are also acknowledged for their support. The authors thank Leslie Gaffney at the Broad Institute for graphic design and editing and Tracy E. Anderson of the University of Minnesota, College of Biological Sciences Imaging Center for spore micrographs. NR 37 TC 487 Z9 746 U1 21 U2 183 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAR 18 PY 2010 VL 464 IS 7287 BP 367 EP 373 DI 10.1038/nature08850 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 570FG UT WOS:000275657100037 PM 20237561 ER PT J AU Visel, A Zhu, YW May, D Afzal, V Gong, E Attanasio, C Blow, MJ Cohen, JC Rubin, EM Pennacchio, LA AF Visel, Axel Zhu, Yiwen May, Dalit Afzal, Veena Gong, Elaine Attanasio, Catia Blow, Matthew J. Cohen, Jonathan C. Rubin, Edward M. Pennacchio, Len A. TI Targeted deletion of the 9p21 non-coding coronary artery disease risk interval in mice SO NATURE LA English DT Article ID CHROMOSOME 9P21; MYOCARDIAL-INFARCTION; TUMOR SUPPRESSION; APOLIPOPROTEIN-E; HEART-DISEASE; INK4A LOCUS; ATHEROSCLEROSIS; ASSOCIATION; EXPRESSION; HYPERCHOLESTEROLEMIA AB Sequence polymorphisms in a 58-kilobase (kb) interval on chromosome 9p21 confer a markedly increased risk of coronary artery disease (CAD), the leading cause of death worldwide(1,2). The variants have a substantial effect on the epidemiology of CAD and other life-threatening vascular conditions because nearly one-quarter of Caucasians are homozygous for risk alleles. However, the risk interval is devoid of protein-coding genes and the mechanism linking the region to CAD risk has remained enigmatic. Here we show that deletion of the orthologous 70-kb non-coding interval on mouse chromosome 4 affects cardiac expression of neighbouring genes, as well as proliferation properties of vascular cells. Chr4(Delta 70kb/Delta 70kb) mice are viable, but show increased mortality both during development and as adults. Cardiac expression of two genes near the non-coding interval, Cdkn2a and Cdkn2b, is severely reduced in chr4(Delta 70kb/Delta 70kb) mice, indicating that distant-acting gene regulatory functions are located in the non-coding CAD risk interval. Allele-specific expression of Cdkn2b transcripts in heterozygous mice showed that the deletion affects expression through a cis-acting mechanism. Primary cultures of chr4(Delta 70kb/Delta 70kb) aortic smooth muscle cells exhibited excessive proliferation and diminished senescence, a cellular phenotype consistent with accelerated CAD pathogenesis. Taken together, our results provide direct evidence that the CAD risk interval has a pivotal role in regulation of cardiac Cdkn2a/b expression, and suggest that this region affects CAD progression by altering the dynamics of vascular cell proliferation. C1 [Visel, Axel; Zhu, Yiwen; May, Dalit; Afzal, Veena; Gong, Elaine; Attanasio, Catia; Blow, Matthew J.; Rubin, Edward M.; Pennacchio, Len A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, Berkeley, CA 94720 USA. [Visel, Axel; Blow, Matthew J.; Rubin, Edward M.; Pennacchio, Len A.] Joint Genome Inst, US DOE, Walnut Creek, CA 94598 USA. [Cohen, Jonathan C.] Univ Texas SW Med Ctr Dallas, Dept Internal Med, Dept Mol Genet, Dallas, TX 75390 USA. [Cohen, Jonathan C.] Univ Texas SW Med Ctr Dallas, Ctr Human Nutr, Dallas, TX 75390 USA. RP Pennacchio, LA (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Genom Div, MS 84-171, Berkeley, CA 94720 USA. EM LAPennacchio@lbl.gov RI Visel, Axel/A-9398-2009; Blow, Matthew/G-6369-2012; attanasio, catia/D-5042-2017 OI Visel, Axel/0000-0002-4130-7784; Blow, Matthew/0000-0002-8844-9149; FU National Heart, Lung, and Blood Institute; EMBO; Department of Energy, University of California [DE-AC02-05CH11231]; MMPC [DK59630] FX We thank G. Owens for critical suggestions and discussion, T. Ley for providing vector pTURBO-Cre, and D. Lee for help with plasma lipid analysis. L. A. P., E. M. R. and J.C.C. were supported by the National Heart, Lung, and Blood Institute, D. M. and C. A. by EMBO long-term fellowships and L. A. P. by the National Human Genome Research Institute. Research was conducted at the E.O. Lawrence Berkeley National Laboratory and performed under Department of Energy Contract DE-AC02-05CH11231, University of California. Plasma lipid analysis at the University of Cincinnati Mouse Metabolic Phenotyping Center was supported by MMPC DK59630. All animal work was reviewed and approved by the LBNL Animal Welfare and Research Committee. NR 31 TC 247 Z9 256 U1 2 U2 22 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAR 18 PY 2010 VL 464 IS 7287 BP 409 EP U103 DI 10.1038/nature08801 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 570FG UT WOS:000275657100046 PM 20173736 ER PT J AU Williams, JS Williams, RS Dovey, CL Guenther, G Tainer, JA Russell, P AF Williams, Jessica S. Williams, R. Scott Dovey, Claire L. Guenther, Grant Tainer, John A. Russell, Paul TI gamma H2A binds Brc1 to maintain genome integrity during S-phase SO EMBO JOURNAL LA English DT Article DE chromatin; DNA replication; genome stability; Schizosaccharomyces pombe; X-ray crystal structure ID DOUBLE-STRAND BREAKS; X-RAY SOLUTION; HISTONE H2AX PHOSPHORYLATION; REPLICATION FORK ARREST; CHECKPOINT PROTEIN CRB2; DNA-DAMAGE-RESPONSE; FISSION YEAST; RIBOSOMAL DNA; SCHIZOSACCHAROMYCES-POMBE; MACROMOLECULAR STRUCTURES AB ATM(Tel1) and ATR(Rad3) checkpoint kinases phosphorylate the C-terminus of histone H2AX (H2A in yeasts) in chromatin flanking DNA damage, establishing a recruitment platform for checkpoint and repair proteins. Phospho-H2A/X (gamma H2A/X)-binding proteins at double-strand breaks (DSBs) have been characterized, but those required for replication stress responses are unknown. Here, we present genetic, biochemical, small angle X-ray scattering (SAXS), and X-ray structural studies of the Schizosaccharomyces pombe Brc1, a 6-BRCT-domain protein that is structurally related to Saccharomyces cerevisiae Rtt107 and mammalian PTIP. Brc1 binds gamma H2A to form spontaneous and DNA damage-induced nuclear foci. Spontaneous Brc1 foci colocalize with ribosomal DNA repeats, a region prone to fork pausing and genomic instability, whereas DNA damage-induced Brc1 foci colocalize with DSB response factors. gamma H2A binding is critical for Brc1 function. The 1.45 angstrom resolution crystal structure of Brc1-gamma H2A complex shows how variable BRCT insertion loops sculpt tandem-BRCT phosphoprotein-binding pockets to facilitate unique phosphoprotein-interaction specificities, and unveils an acidic DNA-mimicking Brc1 surface. From these results, Brc1 docking to gamma H2A emerges as a critical chromatin-specific response to replication-associated DNA damage. The EMBO Journal (2010) 29, 1136-1148. doi: 10.1038/emboj.2009.413; Published online 21 January 2010 C1 [Williams, Jessica S.; Williams, R. Scott; Dovey, Claire L.; Guenther, Grant; Tainer, John A.; Russell, Paul] Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA. [Williams, R. Scott; Guenther, Grant; Tainer, John A.] Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA. [Russell, Paul] Scripps Res Inst, Dept Cell Biol, La Jolla, CA 92037 USA. [Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Mol Biol, Div Life Sci, Berkeley, CA 94720 USA. RP Tainer, JA (reprint author), Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA. EM jat@scripps.edu; prussell@scripps.edu RI Williams, Robert/A-6059-2015 FU Canadian Institutes of Health Research (CIHR); Alberta Heritage Foundation for Medical Research (AHFMR); Skaggs Institute for Chemical Biology; National Cancer Institute [CA117638, GM59447, CA77325]; Integrated Diffraction Analysis Technologies (IDAT) under DOE [DE-AC02-05CH11231] FX We thank Oliver Limbo for plasmid construction, Charly Chahwan and Eishi Noguchi for helpful suggestions, Li-Lin Du for strains, and the Russell and Tainer laboratories members plus the Scripps Cell Cycle Group for discussions. RSW is supported by postdoctoral fellowships from the Canadian Institutes of Health Research (CIHR), the Alberta Heritage Foundation for Medical Research (AHFMR), and the Skaggs Institute for Chemical Biology. Work on Brc1 in the laboratories is supported in part by National Cancer Institute grants CA117638, GM59447 and CA77325. Support for SAXS at the SIBYLS beamline of the Advanced Light Source came from the program Integrated Diffraction Analysis Technologies (IDAT) under DOE contract DE-AC02-05CH11231. NR 58 TC 43 Z9 43 U1 2 U2 6 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0261-4189 EI 1460-2075 J9 EMBO J JI Embo J. PD MAR 17 PY 2010 VL 29 IS 6 BP 1136 EP 1148 DI 10.1038/emboj.2009.413 PG 13 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 570NP UT WOS:000275685300012 PM 20094029 ER PT J AU Ding, BQ Deng, ZT Yan, H Cabrini, S Zuckermann, RN Bokor, J AF Ding, Baoquan Deng, Zhengtao Yan, Hao Cabrini, Stefano Zuckermann, Ronald N. Bokor, Jeffrey TI Gold Nanoparticle Self-Similar Chain Structure Organized by DNA Origami SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID ARRAYS AB Here we demonstrate Au nanoparticle self-similar chain structure organized by triangle DNA origami with well-controlled orientation and <10 nm spacing. We show for the first time that a large DNA complex (origami) and multiple AuNP conjugates can be well-assembled and purified with reliable yields. The assembled structure could be used to generate high local-field enhancement. The same method can be used to precisely localize multiple components on a DNA template for potential applications in nanophotonic, nanomagnctic, and nanoelectronic devices. C1 [Ding, Baoquan; Cabrini, Stefano; Zuckermann, Ronald N.; Bokor, Jeffrey] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Deng, Zhengtao; Yan, Hao] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA. [Deng, Zhengtao; Yan, Hao] Arizona State Univ, Biodesign Inst, Tempe, AZ 85287 USA. RP Ding, BQ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM BDing@lbl.gov; JBokor@eecs.berkeley.edu RI Deng, Zhengtao/F-8581-2010; Zuckermann, Ronald/A-7606-2014; Bokor, Jeffrey/A-2683-2011 OI Deng, Zhengtao/0000-0002-8428-8982; Zuckermann, Ronald/0000-0002-3055-8860; FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-05CH11231, DE-SC0001016]; ONR; ARO; NIH; Sloan Research Foundation FX Work at the Molecular Foundry was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-05CH11231. H.Y. acknowledges funding from ONR, ARO, NSF, DOE, NIH, and the Sloan Research Foundation and was supported as part of the Center for Bio-Inspired Solar Fuel Production, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Award DE-SC0001016 NR 11 TC 278 Z9 280 U1 52 U2 276 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 17 PY 2010 VL 132 IS 10 BP 3248 EP + DI 10.1021/ja9101198 PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA 570GP UT WOS:000275660600009 PM 20163139 ER PT J AU Ulmschneider, MB Doux, JPF Killian, JA Smith, JC Ulmschneider, JP AF Ulmschneider, Martin B. Doux, Jacques P. F. Killian, J. Antoinette Smith, Jeremy C. Ulmschneider, Jakob P. TI Mechanism and Kinetics of Peptide Partitioning into Membranes from All-Atom Simulations of Thermostable Peptides SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CIRCULAR-DICHROISM SPECTRA; PROTEIN SECONDARY STRUCTURE; MOLECULAR-DYNAMICS SIMULATIONS; ALPHA-HELICAL PEPTIDES; LIPID-BILAYER; TRANSMEMBRANE HELICES; AMINO-ACIDS; COMPUTER-SIMULATIONS; SEC61 TRANSLOCON; 2-STAGE MODEL AB Partitioning properties of transmembrane (TM) polypeptide segments directly determine membrane protein folding, stability, and function, and their understanding is vital for rational design of membrane active peptides. However, direct determination of water-to-bilayer transfer of TM peptides has proved difficult. Experimentally, sufficiently hydrophobic peptides tend to aggregate, while atomistic computer simulations at physiological temperatures cannot yet reach the long time scales required to capture partitioning. Elevating temperatures to accelerate the dynamics has been avoided, as this was thought to lead to rapid denaturing. However, we show here that model TM peptides (WALP) are exceptionally thermostable. Circular dichroism experiments reveal that the peptides remain inserted into the lipid bilayer and are fully helical, even at 90 degrees C. At these temperatures, sampling is similar to 50-500 times faster, sufficient to directly simulate spontaneous partitioning at atomic resolution. A folded insertion pathway is observed, consistent with three-stage partitioning theory. Elevated temperature simulation ensembles further allow the direct calculation of the insertion kinetics, which is found to be first-order for all systems. Insertion barriers are Delta H(in)(double dagger) = 15 kcal/mol for a general hydrophobic peptide and similar to 23 kcal/mol for the tryptophan-flanked WALP peptides. The corresponding insertion times at room temperature range from 8.5 mu s to 163 ms. High-temperature simulations of experimentally validated thermostable systems suggest a new avenue for systematic exploration of peptide partitioning properties. C1 [Ulmschneider, Martin B.; Doux, Jacques P. F.; Killian, J. Antoinette] Univ Utrecht, Dept Chem, NL-3584 CH Utrecht, Netherlands. [Smith, Jeremy C.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Smith, Jeremy C.; Ulmschneider, Jakob P.] Univ Heidelberg, IWR, D-6900 Heidelberg, Germany. RP Ulmschneider, MB (reprint author), Univ Utrecht, Dept Chem, Padualaan 8, NL-3584 CH Utrecht, Netherlands. EM martin@ulmschneider.com; jakob@ulmschneider.com RI smith, jeremy/B-7287-2012; Ulmschneider, Martin/J-4374-2012; Killian, J. Antoinette/I-3001-2016; Ulmschneider, Jakob/D-6217-2017 OI smith, jeremy/0000-0002-2978-3227; FU Human Frontier Science Program; Netherlands Organization for Scientific Research [700.54.303]; U.S. Department of Energy FX We thank Tania Rutters-Meijneke for help with W16 synthesis. This research was supported by the Human Frontier Science Program (M.B.U.), BIOMS (J.P.U.) and The Netherlands Organization for Scientific Research (NWO-Top grant 700.54.303 to J.P.F.D.). J.C.S. was supported by a Laboratory Directed Research and Development award from the U.S. Department of Energy. NR 62 TC 42 Z9 42 U1 2 U2 21 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 17 PY 2010 VL 132 IS 10 BP 3452 EP 3460 DI 10.1021/ja909347x PG 9 WC Chemistry, Multidisciplinary SC Chemistry GA 570GP UT WOS:000275660600047 PM 20163187 ER PT J AU Bera, TK Jang, JI Song, JH Malliakas, CD Freeman, AJ Ketterson, JB Kanatzidis, MG AF Bera, Tarun K. Jang, Joon I. Song, Jung-Hwan Malliakas, Christos D. Freeman, Arthur J. Ketterson, John B. Kanatzidis, Mercouri G. TI Soluble Semiconductors AAsSe(2) (A = Li, Na) with a Direct-Band-Gap and Strong Second Harmonic Generation: A Combined Experimental and Theoretical Study SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID NONLINEAR-OPTICAL-MATERIALS; STRUCTURAL-CHARACTERIZATION; INTERMEDIATE TEMPERATURES; CRYSTAL-STRUCTURE; SINGLE-CRYSTAL; RB; CS; SE; CHALCOGENIDES; COORDINATION AB AAsSe(2) (A = Li, Na) have been identified as a new class of polar direct-band gap semiconductors. These I-V-VI2 ternary alkali-metal chalcoarsenates have infinite single chains of (1/infinity)[AsQ(2)(-)] derived from corner-sharing pyramidal AsQ(3) units with stereochemically active lone pairs of electrons on arsenic. The conformations and packing of the chains depend on the structure-directing alkali metals. This results in at least four different structural types for the Li1-xNaxAsSe2 stoichoimetry (alpha-LiAsSe2, beta-LiAsSe2, gamma-NaAsSe2, and delta-NaAsSe2). Single-crystal X-ray diffraction studies showed an average cubic NaCl-type structure for alpha-LiAsSe2, which was further demonstrated to be locally distorted by pair distribution function (PDF) analysis. The beta and gamma forms have polar structures built of different (1/infinity)[AsSe2-] chain conformations, whereas the delta form has nonpolar packing. A wide range of direct band gaps are observed, depending on composition: namely, 1.11 eV for alpha-LiAsSe2, 1.60 eV for LiAsS2, 1.75 eV for gamma-NaAsSe2, 2.23 eV for NaAsS2. The AAsQ(2) materials are soluble in common solvents such as methanol, which makes them promising candidates for solution processing. Band structure calculations performed with the highly precise screened-exchange sX-LDA FLAPW method confirm the direct-gap nature and agree well with experiment. The polar gamma-NaAsSe2 shows very large nonlinear optical (NLO) second harmonic generation (SHG) response in the wavelength range of 600-950 nm. The theoretical studies confirm the experimental results and show that gamma-NaAsSe2 has the highest static SHG coefficient known to date, 337.9 pm/V, among materials with band gaps larger than 1.0 eV. C1 [Bera, Tarun K.; Malliakas, Christos D.; Kanatzidis, Mercouri G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. [Jang, Joon I.; Song, Jung-Hwan; Freeman, Arthur J.; Ketterson, John B.] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA. [Kanatzidis, Mercouri G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP Kanatzidis, MG (reprint author), Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. EM m-kanatzidis@northwestern.edu RI Ketterson, John/B-7234-2009 FU National Science Foundation [DMR-0801855]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [W-7405-Eng-82] FX Financial support from the National Science Foundation (Grant DMR-0801855) is gratefully acknowledged. This work made use of the SEM facilities at the Electron Probe Instrumentation Center (EPIC), Northwestern University. FT-Raman spectroscopic study was done at the Analytical Service Laboratory (ASL), Northwestern University. The PDF work was conducted at the Midwest Universities Collaborative Access Team (MUCAT) sector 6-ID-D at the APS that is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, through the Ames Laboratory under Contract No. W-7405-Eng-82. NR 88 TC 103 Z9 104 U1 1 U2 60 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 17 PY 2010 VL 132 IS 10 BP 3484 EP 3495 DI 10.1021/ja9094846 PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA 570GP UT WOS:000275660600050 PM 20170184 ER PT J AU Allan, PK Xiao, B Teat, SJ Knight, JW Morris, RE AF Allan, Phoebe K. Xiao, Bo Teat, Simon J. Knight, Jason W. Morris, Russell E. TI In Situ Single-Crystal Diffraction Studies of the Structural Transition of Metal-Organic Framework Copper 5-Sulfoisophthalate, Cu-SIP-3 SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID X-RAY-DIFFRACTION; COORDINATION POLYMER; HYDROGEN ADSORPTION; POROUS MATERIAL; GAS-ADSORPTION; GUEST EXCHANGE; STORAGE; CATALYSIS; TRANSFORMATIONS; SEPARATION AB The flexibility of the metal-organic framework Cu(2)(OH)(C(8)H(3)O(7)S)(H(2)O)center dot 2H(2)O (Cu-SIP-3) toward reversible single-crystal to single-crystal transformations is demonstrated using in situ diffraction methods at variable temperature. At temperatures below a dehydration-induced phase transition (T < 370 K) the structure is confirmed as being hydrated. In the temperature range where the transition takes place (370 K < T < 405 K) no discrete, sharp Bragg peaks can be seen in the single-crystal X-ray diffraction pattern, indicating significant loss of long-range order. At temperatures higher than 405 K, the Bragg peaks return and the structure can be refined as dehydrated Cu-SIP-3. The loss of guest water molecules can be followed at temperatures below the phase transition giving insight into the mechanism of the dehydration. Addition of nitric oxide gas to the material above the gating opening pressure of 275 mbar also leads to loss of Bragg scattering in the diffraction pattern. C1 [Allan, Phoebe K.; Xiao, Bo; Morris, Russell E.] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland. [Teat, Simon J.; Knight, Jason W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. RP Morris, RE (reprint author), Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland. EM rem1@st-andrews.ac.uk RI Morris, Russell/G-4285-2010 OI Morris, Russell/0000-0001-7809-0315 FU Office of Science, Office of Basic Energy Sciences; U.S. Department of Energy [DE-AC02-05CH11231]; EPSRC; Royal Society Wolfson Merit Award Holder FX The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. We thank the GEMI fund and the EPSRC for funding. R.E.M. is a Royal Society Wolfson Merit Award Holder NR 39 TC 60 Z9 60 U1 2 U2 55 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 17 PY 2010 VL 132 IS 10 BP 3605 EP 3611 DI 10.1021/ja910600b PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 570GP UT WOS:000275660600062 PM 20170157 ER PT J AU Hines, WC Bazarov, AV Mukhopadhyay, R Yaswen, P AF Hines, William C. Bazarov, Alexey V. Mukhopadhyay, Rituparna Yaswen, Paul TI BORIS (CTCFL) Is Not Expressed in Most Human Breast Cell Lines and High Grade Breast Carcinomas SO PLOS ONE LA English DT Article ID COMPARATIVE GENOMIC HYBRIDIZATION; CANCER-TESTIS GENE; FREQUENT AMPLIFICATION; METHYLATION; EPIGENETICS; DEREPRESSION; CTCFL/BORIS; REGULATOR; MELANOMA; MAGE-A1 AB BORIS (CTCFL) is the only known paralog of the versatile regulatory protein CTCF, a multifunctional DNA binding protein that mediates distinct gene regulatory functions involved in cell growth, differentiation, and apoptosis. Unlike CTCF, the expression of BORIS is normally restricted to specific cells in testes (the only cells where CTCF is not expressed), where it may play a role in reprogramming the methylation pattern of male germ line DNA. Frequent amplification of the 20q13.2 region, which contains the BORIS gene, and expression of BORIS transcripts in diverse human tumors and cell lines have led to the hypothesis that aberrant expression of BORIS may play a role in tumorigenesis by interfering with CTCF functions. However, recent studies using more quantitative methods indicate low frequency of BORIS expression in melanoma, ovarian, prostate, and bladder carcinomas. To investigate the relationship between chromosome 20q13 amplification and BORIS mRNA levels within breast cancer cell lines and tissues, we developed a quantitative RT-PCR assay to measure the levels of BORIS mRNA. Endpoint RT-PCR assays were also used to investigate the possible expression of alternatively spliced variants. Using multiple primer sets and controls, we found that neither mature BORIS transcripts nor spliced variants are commonly expressed at detectable levels in malignant breast cells or tissues, although endogenous BORIS transcripts can be induced in MCF-7 cells following 5-aza-29-deoxycytidine treatment. In conclusion, in most breast cancer cells, endogenous BORIS is unlikely to be expressed at sufficient levels to interfere with CTCF functions. Thus it is improbable that aberrant BORIS expression plays a role in most human breast cancers. C1 [Hines, William C.; Mukhopadhyay, Rituparna; Yaswen, Paul] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. [Bazarov, Alexey V.] Univ Calif San Francisco, Dept Lab Med, San Francisco, CA 94143 USA. RP Hines, WC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. EM P_Yaswen@lbl.gov FU California Breast Cancer Research Program [9WB-0193]; Department of Defense Breast Cancer Research Program [W81XWH-04-1-0283]; Office of Health and Environmental Research, Health Effects Division, United States Department of Energy [DE-AC02-05CH11231]; Komen Foundation [PDF0707408, BCTR0707231]; Flight Attendant Medical Research Institute [032122] FX This work was funded by grants from the California Breast Cancer Research Program (9WB-0193), the Department of Defense Breast Cancer Research Program (W81XWH-04-1-0283), and by the Office of Health and Environmental Research, Health Effects Division, United States Department of Energy (contract no. DE-AC02-05CH11231). W. C. Hines and A. Bazarov received support from the Komen Foundation (fellowship PDF0707408 & grant BCTR0707231) and the Flight Attendant Medical Research Institute (032122). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 29 TC 10 Z9 11 U1 0 U2 2 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAR 17 PY 2010 VL 5 IS 3 AR e9738 DI 10.1371/journal.pone.0009738 PG 8 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 572EG UT WOS:000275809600010 PM 20305816 ER PT J AU Zhou, CZ Trionfi, A Jones, JC Hsu, JWP Walker, AV AF Zhou, Chuanzhen Trionfi, Aaron Jones, Jason C. Hsu, Julia W. P. Walker, Amy V. TI Comparison of Chemical Lithography Using Alkanethiolate Self-Assembled Monolayers on GaAs (001) and Au SO LANGMUIR LA English DT Article ID ELECTRON-BEAM LITHOGRAPHY; SURFACE COVERAGE MEASUREMENTS; BARE SEMICONDUCTOR SURFACES; NEAR-FIELD PHOTOLITHOGRAPHY; DIP-PEN NANOLITHOGRAPHY; ION MASS-SPECTROMETRY; UV PHOTOOXIDATION; STATIC SIMS; HOMOLOGOUS SERIES; CO ADSORPTION AB We have investigated the efficiency of bifunctional pattern formation in alkanethiolate self-assembled monolayers (SAMs) adsorbed on GaAs (001) and Au, using time-of-flight secondary ion mass spectrometry. Two patterning techniques were employed: electron beam lithography and UV photopatterning. Previous work has always assumed that complete degradation of the SAM was necessary for the Formation of well-defined multi functional patterned surfaces, requiring large electron doses or long UV irradiation times. We demonstrate that well-defined Multifunctional patterned surfaces can be produced on GaAs (001) with only partial degradation of the SAM, allowing greatly reduced electron beam doses and UV irradiation times to be used. Using electron beam lithography we observe that sharp well-defined patterns can form after an electron dose as low as 450 mu C cm(-2). We also demonstrate that only 50% of the monolayer must be photooxidized in UV photopatterning, reducing the exposure time needed by a factor of 3. In contrast, patterning of alkanethiolate SAMs adsorbed on Au requires much higher electron doses (>= 1250 mu C cm(-2)) and photooxidation times (2 h). The substantial differences observed on these two substrates appear to arise from differences in the SAM Structure on GaAs and Au. These results suggest that alkanethiolate SAM resists may be a suitable technology for nanometer scale lithography of GaAs and possibly other semiconductors. C1 [Zhou, Chuanzhen; Walker, Amy V.] Washington Univ, Dept Chem, St Louis, MO 63130 USA. [Zhou, Chuanzhen; Walker, Amy V.] Washington Univ, Ctr Mat Innovat, St Louis, MO 63130 USA. [Trionfi, Aaron; Jones, Jason C.; Hsu, Julia W. P.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA. RP Walker, AV (reprint author), Univ Texas Dallas, Dept Mat Sci & Engn, 800 W Campbell Rd,RL 10, Richardson, TX 75080 USA. EM amy.walker@utdallas.edu RI zhou, chuanzhen/E-8773-2010 FU National Science Foundation; US Department of Energy, Center for Integrated Nanotechnologies, at Los Alamos; Sandia National Laboratories; US Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000] FX A.V.W. acknowledges the financial support of the National Science Foundation. This work was performed in part at the US Department of Energy, Center for Integrated Nanotechnologies, at Los Alamos and Sandia National Laboratories. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed-Martin Company, for the US Department of Energy's National Nuclear Security Administration under Contract No. DE-AC04-94AL85000. NR 56 TC 8 Z9 8 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD MAR 16 PY 2010 VL 26 IS 6 BP 4523 EP 4528 DI 10.1021/la9033029 PG 6 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 564PE UT WOS:000275226700108 PM 20000435 ER PT J AU Auld, DS Lovell, S Thorne, N Lea, WA Maloney, DJ Shen, M Rai, G Battaile, KP Thomas, CJ Simeonov, A Hanzlik, RP Inglese, J AF Auld, Douglas S. Lovell, Scott Thorne, Natasha Lea, Wendy A. Maloney, David J. Shen, Min Rai, Ganesha Battaile, Kevin P. Thomas, Craig J. Simeonov, Anton Hanzlik, Robert P. Inglese, James TI Molecular basis for the high-affinity binding and stabilization of firefly luciferase by PTC124 SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE Ataluren; multisubstrate adduct inhibitor; protein stability; reporter gene assay; X-ray crystallography ID MULTISUBSTRATE ADDUCT INHIBITOR; CRYSTAL-STRUCTURE; BIOLUMINESCENCE; MECHANISM; REPORTER; ENZYME; ASSAYS; TRANSFORMYLASE; IDENTIFICATION; SPECIFICITY AB Firefly luciferase (FLuc), an ATP-dependent bioluminescent reporter enzyme, is broadly used in chemical biology and drug discovery assays. PTC124 (Ataluren; (3-[5-(2-fluorophenyl)-1,2,4-oxadiazol-3-yl] benzoic acid) discovered in an FLuc-based assay targeting nonsense codon suppression, is an unusually potent FLuc-inhibitor. Paradoxically, PTC124 and related analogs increase cellular FLuc activity levels by posttranslational stabilization. In this study, we show that FLuc inhibition and stabilization is the result of an inhibitory product formed during the FLuc-catalyzed reaction between its natural substrate, ATP, and PTC124. A 2.0 angstrom cocrystal structure revealed the inhibitor to be the acyl-AMP mixed-anhydride adduct PTC124-AMP, which was subsequently synthesized and shown to be a high-affinity multisubstrate adduct inhibitor (MAI; K(D) = 120 pM) of FLuc. Biochemical assays, liquid chromatography/mass spectrometry, and near-attack conformer modeling demonstrate that formation of this novel MAI is absolutely dependent upon the precise positioning and reactivity of a key meta-carboxylate of PTC124 within the FLuc active site. We also demonstrate that the inhibitory activity of PTC124-AMP is relieved by free coenzyme A, a component present at high concentrations in luciferase detection reagents used for cell-based assays. This explains why PTC124 can appear to increase, instead of inhibit, FLuc activity in cell-based reporter gene assays. To our knowledge, this is an unusual example in which the "off-target" effect of a small molecule is mediated by an MAI mechanism. C1 [Auld, Douglas S.; Thorne, Natasha; Lea, Wendy A.; Maloney, David J.; Shen, Min; Rai, Ganesha; Thomas, Craig J.; Simeonov, Anton; Inglese, James] NIH, Chem Genom Ctr, Bethesda, MD 20892 USA. [Lovell, Scott; Hanzlik, Robert P.] Univ Kansas, Struct Biol Ctr, Lawrence, KS 66047 USA. [Battaile, Kevin P.] Argonne Natl Lab, Adv Photon Source, Ind Macromol Crystallog Assoc Collaborat Access T, Argonne, IL 60439 USA. RP Inglese, J (reprint author), NIH, Chem Genom Ctr, Bldg 10, Bethesda, MD 20892 USA. EM jinglese@mail.nih.gov OI Battaile, Kevin/0000-0003-0833-3259 FU Molecular Libraries Initiative of the National Institutes of Health (NIH) Roadmap for Medical Research; NIH Center of Biomedical Research [5P20 RR17708] FX This research was supported by the Molecular Libraries Initiative of the National Institutes of Health (NIH) Roadmap for Medical Research, and an NIH Center of Biomedical Research Excellence Award (5P20 RR17708) to the University of Kansas (KU). We thank Nadya Galeva from the KU Mass Spectrometry Laboratory for her assistance with the Matrix Assisted Laser Desorption-Ionization-Mass Spectrometry analysis, and Bill Leister of the NIH Chemical Genomics Center for analytical chemistry support. NR 31 TC 89 Z9 93 U1 0 U2 24 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 16 PY 2010 VL 107 IS 11 BP 4878 EP 4883 DI 10.1073/pnas.0909141107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 570YI UT WOS:000275714300017 PM 20194791 ER PT J AU Cong, Y Baker, ML Jakana, J Woolford, D Miller, EJ Reissmann, S Kumar, RN Redding-Johanson, AM Batth, TS Mukhopadhyay, A Ludtke, SJ Frydman, J Chiu, W AF Cong, Yao Baker, Matthew L. Jakana, Joanita Woolford, David Miller, Erik J. Reissmann, Stefanie Kumar, Ramya N. Redding-Johanson, Alyssa M. Batth, Tanveer S. Mukhopadhyay, Aindrila Ludtke, Steven J. Frydman, Judith Chiu, Wah TI 4.0-angstrom resolution cryo-EM structure of the mammalian chaperonin TRiC/CCT reveals its unique subunit arrangement SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE asymmetric reconstruction; atomic model; subunit structure ID PARTICLE ELECTRON CRYOMICROSCOPY; EUKARYOTIC CYTOSOLIC CHAPERONIN; PROTEIN-FOLDING MACHINE; GROUP-II CHAPERONINS; CRYSTAL-STRUCTURE; SUBSTRATE-BINDING; IN-VIVO; MECHANISM; CCT; AGGREGATION AB The essential double-ring eukaryotic chaperonin TRiC/CCT (TCP1-ring complex or chaperonin containing TCP1) assists the folding of similar to 5-10% of the cellular proteome. Many TRiC substrates cannot be folded by other chaperonins from prokaryotes or archaea. These unique folding properties are likely linked to TRiC's unique hetero-oligomeric subunit organization, whereby each ring consists of eight different paralogous subunits in an arrangement that remains uncertain. Using single particle cryo-EM without imposing symmetry, we determined the mammalian TRiC structure at 4.7 angstrom resolution. This revealed the existence of a 2-fold axis between its two rings resulting in two homotypic subunit interactions across the rings. A subsequent 2-fold symmetrized map yielded a 4.0-angstrom resolution structure that evinces the densities of a large fraction of side chains, loops, and insertions. These features permitted unambiguous identification of all eight individual subunits, despite their sequence similarity. Independent biochemical near-neighbor analysis supports our cryo-EM derived TRiC subunit arrangement. We obtained a C alpha backbone model for each subunit from an initial homology model refined against the cryo-EM density. A subsequently optimized atomic model for a subunit showed similar to 95% of the main chain dihedral angles in the allowable regions of the Ramachandran plot. The determination of the TRiC subunit arrangement opens the way to understand its unique function and mechanism. In particular, an unevenly distributed positively charged wall lining the closed folding chamber of TRiC differs strikingly from that of prokaryotic and archaeal chaperonins. These interior surface chemical properties likely play an important role in TRiC's cellular substrate specificity. C1 [Cong, Yao; Baker, Matthew L.; Jakana, Joanita; Woolford, David; Ludtke, Steven J.; Chiu, Wah] Baylor Coll Med, Verna & Marrs Mclean Dept Biochem & Mol Biol, Natl Ctr Macromol Imaging, Houston, TX 77030 USA. [Miller, Erik J.; Reissmann, Stefanie; Kumar, Ramya N.; Frydman, Judith] Stanford Univ, Dept Biol, Stanford, CA 94305 USA. [Miller, Erik J.; Reissmann, Stefanie; Kumar, Ramya N.; Frydman, Judith] Stanford Univ, BioX Program, Stanford, CA 94305 USA. [Redding-Johanson, Alyssa M.; Batth, Tanveer S.; Mukhopadhyay, Aindrila] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. RP Chiu, W (reprint author), Baylor Coll Med, Verna & Marrs Mclean Dept Biochem & Mol Biol, Natl Ctr Macromol Imaging, Houston, TX 77030 USA. EM wah@bcm.edu FU National Institutes of Health [PN1EY016525, P41RR02250, GMR01-074074]; National Science Foundation [IIS-0705644]; Department of Energy [DE-AC02-05CH11231] FX We would like to thank Dr. Michael F. Schmid for very helpful discussions and suggestions. This research is supported by grants from National Institutes of Health (PN1EY016525, P41RR02250, and GMR01-074074) and National Science Foundation (IIS-0705644), and Department of Energy Contract DE-AC02-05CH11231. NR 48 TC 78 Z9 80 U1 1 U2 14 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 16 PY 2010 VL 107 IS 11 BP 4967 EP 4972 DI 10.1073/pnas.0913774107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 570YI UT WOS:000275714300032 PM 20194787 ER PT J AU Amthor, JS Hanson, PJ Norby, RJ Wullschleger, SD AF Amthor, Jeffrey S. Hanson, Paul J. Norby, Richard J. Wullschleger, Stan D. TI A comment on "Appropriate experimental ecosystem warming methods by ecosystem, objective, and practicality" by Aronson and McNulty SO AGRICULTURAL AND FOREST METEOROLOGY LA English DT Editorial Material C1 [Amthor, Jeffrey S.] US DOE, Washington, DC 20585 USA. [Hanson, Paul J.; Norby, Richard J.; Wullschleger, Stan D.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. RP Amthor, JS (reprint author), US DOE, SC-23 Germantown Bldg,1000 Independence Ave,SW, Washington, DC 20585 USA. EM jeff.amthor@science.doe.gov; hansonpj@ornl.gov; norbyrj@ornl.gov; wullschlegsd@ornl.gov RI Hanson, Paul J./D-8069-2011; Wullschleger, Stan/B-8297-2012; Norby, Richard/C-1773-2012; Amthor, Jeffrey/F-2696-2016 OI Hanson, Paul J./0000-0001-7293-3561; Wullschleger, Stan/0000-0002-9869-0446; Norby, Richard/0000-0002-0238-9828; Amthor, Jeffrey/0000-0002-1410-6100 NR 5 TC 31 Z9 33 U1 5 U2 32 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-1923 J9 AGR FOREST METEOROL JI Agric. For. Meteorol. PD MAR 15 PY 2010 VL 150 IS 3 BP 497 EP 498 DI 10.1016/j.agrformet.2009.11.020 PG 2 WC Agronomy; Forestry; Meteorology & Atmospheric Sciences SC Agriculture; Forestry; Meteorology & Atmospheric Sciences GA 576CV UT WOS:000276122500019 ER PT J AU Liu, C Luo, Y Maxwell, EJ Fang, N Chen, DDY AF Liu, Chang Luo, Yong Maxwell, E. Jane Fang, Ning Chen, David D. Y. TI Reverse of Mixing Process with a Two-Dimensional Electro-Fluid-Dynamic Device SO ANALYTICAL CHEMISTRY LA English DT Article ID FREE-FLOW ELECTROPHORESIS; PARTICLE SEPARATION; CAPILLARIES; PROTEINS; CHIP AB Mixing of two solutions into one is a spontaneous process with a net increase in entropy. However, the reverse of the mixing process is usually not possible unless certain conditions are met. A continuous solution stream containing a mixture of two compounds can be separated into two channels, each containing a pure compound, thus reversing the mixing process using a two-dimensional microfluidic electro-fluid-dynamic (EFD) device. When the electric field is strategically applied in the interconnecting channels of an EFD device, the pressure required to direct an analyte into a certain channel can be calculated by using the solutions of electric field and fluid dynamics in the mass balance equation. If the pressure and electric potential at various inlets and outlets satisfy these predetermined conditions, the reverse of a mixing process is observed. Conventional microfluidic devices have been used to introduce samples from interconnecting channels or efficiently mix different solutions into a single channel. The EFD devices expand the spatial separation of analytes from one dimension to two using both the differential migration behavior of analytes and the velocity field distribution in different channel geometries. The devices designed according to these basic physicochemical principles can be used for complete processing of minute samples and to obtain pure chemical species from complex mixtures. C1 [Liu, Chang; Maxwell, E. Jane; Chen, David D. Y.] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada. [Luo, Yong; Fang, Ning] Iowa State Univ, Ames Lab, US Dept Energy, Dept Chem, Ames, IA 50011 USA. RP Chen, DDY (reprint author), Univ British Columbia, Dept Chem, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada. EM chen@chem.ubc.ca RI Liu, Chang/F-5472-2011; Chen, David/B-4849-2012; Fang, Ning/A-8456-2011; OI Chen, David/0000-0002-3669-6041; Liu, Chang/0000-0003-0508-4357 FU Natural Sciences and Engineering Research Council of Canada; Director of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, U.S. Department of Energy (DOE) [DE-AC02-07CH11358] FX The first two authors contributed equally to this work. .D.D.Y.C. was supported by the Natural Sciences and Engineering Research Council of Canada, and N.F. was supported by the Director of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, U.S. Department of Energy (DOE). The Ames Laboratory is operated for DOE by Iowa State University under Contract No. DE-AC02-07CH11358. NR 14 TC 7 Z9 7 U1 2 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 15 PY 2010 VL 82 IS 6 BP 2182 EP 2185 DI 10.1021/ac902938g PG 4 WC Chemistry, Analytical SC Chemistry GA 566NN UT WOS:000275379300005 PM 20166719 ER PT J AU Kim, SH Kelly, PB Ortalan, V Browning, ND Clifford, AJ AF Kim, Seung-Hyun Kelly, Peter B. Ortalan, Volkan Browning, Nigel D. Clifford, Andrew J. TI Quality of Graphite Target for Biological/Biomedical/Environmental Applications of C-14-Accelerator Mass Spectrometry SO ANALYTICAL CHEMISTRY LA English DT Article ID X-RAY-DIFFRACTION; RAMAN-SPECTROSCOPY; CARBON NANOCAPSULES; BIOCHEMICAL SAMPLES; REDUCTION METHOD; ION SOURCES; AMS; C-14; GRAPHITIZATION; PRECISION AB Catalytic graphitization for C-14-accelerator mass spectrometry (C-14-AMS) produced various forms of elemental carbon. Our high-throughput Zn reduction method (C/Fe = 1:5, 500 degrees C, 3 h) produced the AMS target of graphite-coated iron powder (GCIP), a mix of non-graphitic carbon and Fe3C. Crystallinity of the AMS targets of GCIP (nongraphitic carbon) was increased to turbostratic carbon by raising the C/Fe ratio from 1:5 to 1:1 and the graphitization temperature from 500 to 585 degrees C. The AMS target of GCIP containing turbostratic carbon had a large isotopic fractionation and a low AMS ion current. The AMS target of GCIP containing turbostratic carbon also yielded less accurate/precise C-14-AMS measurements because of the lower graphitization yield and lower thermal conductivity that were caused by the higher C/Fe ratio of 1:1. On the other hand, the AMS target of GCIP containing nongraphitic carbon had higher graphitization yield and better thermal conductivity over the AMS target of GCIP containing turbostratic carbon due to optimal surface area provided by die iron powder. Finally, graphitization yield and thermal conductivity were stronger determinants (over graphite crystallinity) for accurate/precise/high-throughput biological, biomedical, and environmental C-14-AMS applications such as absorption, distribution, metabolism, elimination (ADME), and physiologically based pharmacokinetics (PBPK) of nutrients, drugs, phytochemicals, and environmental chemicals. C1 [Kim, Seung-Hyun; Clifford, Andrew J.] Univ Calif Davis, Dept Nutr, Davis, CA 95616 USA. [Kelly, Peter B.] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA. [Ortalan, Volkan; Browning, Nigel D.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. [Browning, Nigel D.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Sci Div, Livermore, CA 94550 USA. RP Clifford, AJ (reprint author), Univ Calif Davis, Dept Nutr, Davis, CA 95616 USA. EM ajclifford@ucdavis.edu OI Browning, Nigel/0000-0003-0491-251X FU NIH [DK-078001, DK-081551, DK-45939, DK-48307]; California Agricultural Experiment Station [W-143]; Chemistry Department, UC Davis [NSF-MRI-DMR-0723118, NSF-MRI-DMR 0421521]; U.S. Department of Energy; Office of Science, Office of Basic Energy Sciences, Division of Materials Science and Engineering [DE-AC52-07NA27344]; NIH National Center [RR13461]; Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy [FG02-03.ER46057] FX The authors thank the reviewers for their perceptive and helpful comments. This work was supported by NIH DK-078001, DK-081551, DK-45939, DK-48307, and the USDA Regional Research W-143 from the California Agricultural Experiment Station. Raman spectra were made at the Spectral Imaging Facility of the NEAT-ORU, Chemistry Department, UC Davis supported by NSF-MRI-DMR-0723118 and NSF-MRI-DMR 0421521. Graphitization yield and isotopic fractionation was measured by Dr. David Harris at Stable Isotope Facility, Plant Science Department, UC Davis. Aspects of this work were performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory and supported by the Office of Science, Office of Basic Energy Sciences, Division of Materials Science and Engineering under contract DE-AC52-07NA27344 and NIH National Center for Research Resources Grant RR13461. This work was supported in part by the Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy under Grant Number DE-FG02-03.ER46057. The authors appreciated Professor Haiyan Wang and Mr. Joon Hwan Lee at Texas A&M University and Michael Dunlap at UC Merced for fruitful discussion on HRTEM measurement. Authors thank Professor Nilesh W. Gaikwad at UC Davis for reviewing the semifinal manuscript. NR 46 TC 7 Z9 7 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 15 PY 2010 VL 82 IS 6 BP 2243 EP 2252 DI 10.1021/ac9020769 PG 10 WC Chemistry, Analytical SC Chemistry GA 566NN UT WOS:000275379300013 PM 20163100 ER PT J AU Sun, W Marchuk, K Wang, GF Fang, N AF Sun, Wei Marchuk, Kyle Wang, Gufeng Fang, Ning TI Autocalibrated Scanning-Angle Prism-Type Total Internal Reflection Fluorescence Microscopy for Nanometer-Precision Axial Position Determination SO ANALYTICAL CHEMISTRY LA English DT Article ID SINGLE-PROTEIN MOLECULES; LIQUID-SOLID INTERFACE; SECRETORY GRANULES; EVANESCENT-WAVE; DNA-MOLECULES; DYNAMICS; SURFACE; CELLS; MEMBRANE; MOTION AB An automatic calibration and scanning-angle prism-type total internal reflection fluorescence microscope (TIRFM) was constructed and tested for the highest vertical resolution. The angle of the incident laser beam can be changed automatically and reliably from subcritical angles to nearly 90 degrees with intervals smaller than 0.2 degrees, and the laser illumination spot in the sample can be calibrated to automatically overlap with the center of the microscope's field of view. By scanning through a wide range of incident angles with different evanescent-field layer thicknesses, the fluorescence intensity decay curves of randomly distributed fluorescent nanospheres in agarose gel were obtained and fitted with the theoretical decay functions to determine their vertical positions. The best axial resolution was demonstrated to be better than 10 nm under the rigorous statistical analysis of confidence levels and by the Monte Carlo simulation. ne new setup was further utilized to determine the tilting angle of the microtubules buried in agarose gel and to find the precise surface plasmon resonance (SPR) angle for gold film enhanced TIRFM. We demonstrate the new microscope's unique capability to find the best illumination configuration for complex systems automatically and reproducibly. C1 [Fang, Ning] US DOE, Ames Lab, Ames, IA 50011 USA. Iowa State Univ, Dept Chem, Ames, IA 50011 USA. RP Fang, N (reprint author), US DOE, Ames Lab, Ames, IA 50011 USA. EM nfang@iastate.edu RI Wang, Gufeng/B-3972-2011; Fang, Ning/A-8456-2011 FU U.S. Department of Energy by Iowa State University [DE-AC02-07CH11358]; Director of Science, Office of Basic Energy Sciences, Division of Chemical Sciences FX The Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. This work was supported by the Director of Science, Office of Basic Energy Sciences, Division of Chemical Sciences. The authors thank Dr. Edward S. Yeung for valuable discussions. NR 24 TC 14 Z9 14 U1 0 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 15 PY 2010 VL 82 IS 6 BP 2441 EP 2447 DI 10.1021/ac902789z PG 7 WC Chemistry, Analytical SC Chemistry GA 566NN UT WOS:000275379300039 PM 20184351 ER PT J AU Shvartsburg, AA Danielson, WF Smith, RD AF Shvartsburg, Alexandre A. Danielson, William F. Smith, Richard D. TI High-Resolution Differential Ion Mobility Separations Using Helium-Rich Gases SO ANALYTICAL CHEMISTRY LA English DT Article ID ESI-FAIMS-MS; SPECTROMETRY-MASS SPECTROMETRY; PHASE SEPARATIONS; PEAK-CAPACITY; FIELD; CONFORMERS; PROTEOMICS; SENSITIVITY; UBIQUITIN; PEPTIDE AB Analyses of complex mixtures and characterization of ions increasingly involve gas-phase separations by ion mobility spectrometry (IMS) and particularly differential or field asymmetric waveform IMS (FAIMS) based on the difference of ion mobility in strong and weak electric fields. The key advantage of FAIMS is substantial orthogonality to mass spectrometry (MS), which makes FAIMS/MS hybrid a powerful analytical platform of broad utility. However, the potential of FAIMS has been constrained by limited resolution. Here, we report that the use of gas mixtures comprising up to 75% He dramatically increases the FAIMS separation capability, with the resolving power for peptides and peak capacity for protein digests reaching and exceeding 100. The resolution gains extend to small molecules, where previously unresolved isomers can now be separated. These performance levels open major new applications of FAIMS in proteomic and other biomolecular analyses. C1 [Shvartsburg, Alexandre A.; Danielson, William F.; Smith, Richard D.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. RP Shvartsburg, AA (reprint author), Pacific NW Natl Lab, Div Biol Sci, POB 999, Richland, WA 99352 USA. RI Smith, Richard/J-3664-2012 OI Smith, Richard/0000-0002-2381-2349 FU Battelle; NIH NCRR [RR18522]; USDoE Office of Biological and Environmental Research FX We thank Ron Moore, Karl Weitz, Carrie Nicora, Gordon Anderson, David Prior, Dr. Satendra Prasad, Dr. Keqi Tang for experimental help, and Dr. Vlad Petyuk and Dr. Matt Monroe for aid in the data analysis. Portions of this research were supported by Battelle and NIH NCRR (RR18522). The work was performed in the PNNL Environmental Molecular Sciences Laboratory, supported by the USDoE Office of Biological and Environmental Research. NR 43 TC 52 Z9 52 U1 2 U2 26 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 15 PY 2010 VL 82 IS 6 BP 2456 EP 2462 DI 10.1021/ac902852a PG 7 WC Chemistry, Analytical SC Chemistry GA 566NN UT WOS:000275379300041 PM 20151640 ER PT J AU Han, YH Levkin, P Abarientos, I Liu, HW Svec, F Frechet, JMJ AF Han, Yehua Levkin, Pavel Abarientos, Irene Liu, Huwei Svec, Frantisek Frechet, Jean M. J. TI Monolithic Superhydrophobic Polymer Layer with Photopatterned Virtual Channel for the Separation of Peptides Using Two-Dimensional Thin Layer Chromatography-Desorption Electrospray Ionization Mass Spectrometry SO ANALYTICAL CHEMISTRY LA English DT Article ID POLAR STATIONARY-PHASE; TRYPTIC PROTEIN DIGESTS; 10 UREA HERBICIDES; PLANAR CHROMATOGRAPHY; QUANTITATIVE-ANALYSIS; ADSORBENT GRADIENT; PHENOLIC-ACIDS; 2D TLC; CAPILLARY ELECTROCHROMATOGRAPHY; RETENTION PARAMETERS AB Superhydrophobic monolithic porous polymer layers with a photopatterned hydrophilic channel have been prepared. These layers were used for two-dimensional thin layer chromatography of peptides. The 50 mu m thin poly(butyl methacrylate-co-ethylene dimethacrylate) layers supported onto 4.0 x 3.3 cm glass plates were prepared using UV-initiated polymerization in a simple glass mold. Photografting of a mixture of 2-actylamido-2-methyl-1-propanesulfonic acid and 2-hydroxyethyl methacrylate carried out through a mask afforded a 600 mu m wide virtual channel along one side of the layer. Ibis channel, which contains ionizable functionalities, enabled the first dimension separation in ion exchange mode. The aqueous mobile phase migrates only through the channel due to the large difference in surface tension at the interface of the hydrophilic channel and the superhydrophobic monolith. The unmodified part of the layer featuring hydrophobic chemistry was then used for the reversed phase separation in the orthogonal second dimension. Practical application of our technique was demonstrated with a rapid 2D separation of a mixture of model peptides differing in hydrophobicity and isoelectric point using a combination of ion-exchange and reversed phase modes. In the former mode, the peptides migrated 11 mm in less than 1 min. Detection of fluorescently labeled peptides was achieved through UV fight visualization. Separation of the native peptides was monitored directly using a desorption electrospray ionization (DESI) source coupled to a mass spectrometer. Unidirectional surface scanning with the DESI source was found suitable to determine both the location of each separated peptide and its molecular mass. C1 [Levkin, Pavel; Svec, Frantisek; Frechet, Jean M. J.] Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. [Han, Yehua; Abarientos, Irene; Svec, Frantisek; Frechet, Jean M. J.] EO Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Han, Yehua; Liu, Huwei] Peking Univ, Dept Chem, Beijing 10087, Peoples R China. RP Frechet, JMJ (reprint author), Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. EM frechet@berkeley.edu RI Levkin, Pavel/E-5804-2011; OI Levkin, Pavel/0000-0002-5975-948X; Frechet, Jean /0000-0001-6419-0163 FU National Institute Institutes of Health [GM48364]; Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC02-05CH11231]; China Scholarship Council affiliated with the Ministry of Education of China FX This work was supported by a grant of the National Institute Institutes of Health (GM48364), which is gratefully acknowledged. F.S., I.A., and all analytical work performed at the Molecular Foundry, Lawrence Berkeley National Laboratory, were supported by the Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy, under Contract No. DE-AC02-05CH11231. Financial support of Y.H. by the China Scholarship Council affiliated with the Ministry of Education of China is also acknowledged. NR 88 TC 47 Z9 48 U1 3 U2 51 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 15 PY 2010 VL 82 IS 6 BP 2520 EP 2528 DI 10.1021/ac100010h PG 9 WC Chemistry, Analytical SC Chemistry GA 566NN UT WOS:000275379300049 PM 20151661 ER PT J AU Gich, M Gazquez, J Roig, A Crespi, A Fontcuberta, J Idrobo, JC Pennycook, SJ Varela, M Skumryev, V Varela, M AF Gich, M. Gazquez, J. Roig, A. Crespi, A. Fontcuberta, J. Idrobo, J. C. Pennycook, S. J. Varela, M. Skumryev, V. Varela, M. TI Epitaxial stabilization of epsilon-Fe2O3 (00l) thin films on SrTiO3 (111) SO APPLIED PHYSICS LETTERS LA English DT Article DE coercive force; iron compounds; magnetic epitaxial layers; magnetoelectric effects; strontium compounds ID NANORODS; GROWTH AB Thin films of the metastable and elusive epsilon-Fe2O3 have been epitaxially stabilized on SrTiO3 (111) substrates. The epsilon-Fe2O3 films present a (001) orientation perpendicular to the substrate and three in-plane domains measuring a few nanometers and showing atomically sharp interfaces. We argue that this domain structure, rather than the epitaxial-strain, plays an essential role in stabilizing the epsilon-Fe2O3 by minimizing the energy of (100) surfaces. The epsilon-Fe2O3 films show a large in-plane coercivity similar to 8 kOe which combined with the magnetoelectric character claimed for this oxide may lead to novel applications in spintronics. C1 [Gich, M.; Roig, A.; Crespi, A.; Fontcuberta, J.] CSIC, ICMAB, Bellaterra 08193, Catalunya, Spain. [Gazquez, J.; Idrobo, J. C.; Pennycook, S. J.; Varela, M.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. [Idrobo, J. C.; Pennycook, S. J.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Skumryev, V.] Univ Autonoma Barcelona, ICREA, Bellaterra 08193, Catalunya, Spain. [Skumryev, V.] Univ Autonoma Barcelona, Dept Fis, Bellaterra 08193, Catalunya, Spain. [Varela, M.] Univ Barcelona, Dept Fis Aplicada & Opt, Barcelona 08002, Catalunya, Spain. RP Gich, M (reprint author), CSIC, ICMAB, Bellaterra 08193, Catalunya, Spain. EM marti.gich@gmail.com; roig@icmab.es RI Varela, Manuel/L-1812-2014; Gazquez, Jaume/C-5334-2012; Varela, Maria/H-2648-2012; ROIG, ANNA/E-7616-2011; Hernandez, Tonia/J-9335-2012; Fontcuberta, Josep /A-7114-2013; Varela, Maria/E-2472-2014; Gich, Marti/H-7179-2012; Idrobo, Juan/H-4896-2015 OI Varela, Manuel/0000-0001-8668-317X; Gazquez, Jaume/0000-0002-2561-328X; ROIG, ANNA/0000-0001-6464-7573; Varela, Maria/0000-0002-6582-7004; Gich, Marti/0000-0001-9958-0057; Idrobo, Juan/0000-0001-7483-9034 FU Ministerio de Ciencia e Innovacion [MAT2009-08024, CSD2007-00041]; Office of Basic Energy Sciences, Division of Materials Sciences and Engineering; U. S. Department of Energy; SHaRE User Facility FX This research was partially supported by the Ministerio de Ciencia e Innovacion (Grant Nos. MAT2009-08024 and CSD2007-00041), the Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, U. S. Department of Energy (S.J.P and M. V.), and the SHaRE User Facility (J. G. and J. C. I.) NR 23 TC 23 Z9 23 U1 7 U2 51 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 15 PY 2010 VL 96 IS 11 AR 112508 DI 10.1063/1.3360217 PG 3 WC Physics, Applied SC Physics GA 572IW UT WOS:000275825200037 ER PT J AU Mihajlovic, G Patrick, MS Pearson, JE Novosad, V Bader, SD Field, M Sullivan, GJ Hoffmann, A AF Mihajlovic, G. Patrick, M. S. Pearson, J. E. Novosad, V. Bader, S. D. Field, M. Sullivan, G. J. Hoffmann, A. TI Temperature dependent nucleation and annihilation of individual magnetic vortices SO APPLIED PHYSICS LETTERS LA English DT Article DE discs (structures); ferromagnetic materials; Hall effect; magnetisation reversal; Permalloy ID ELEMENTS AB We studied the temperature dependence of the magnetization reversal in individual submicron permalloy disks with micro-Hall and bend-resistance magnetometry. The nucleation field exhibits a nonmonotonic dependence with positive and negative slopes at low and high temperatures, respectively, while the annihilation field monotonically decreases with increasing temperature, but with distinctly different slopes at low and high temperatures. Our analysis suggests that at low temperatures vortex nucleation and annihilation proceeds via thermal activation over an energy barrier, while at high temperatures they are governed by a temperature dependence of the saturation magnetization. C1 [Mihajlovic, G.; Patrick, M. S.; Pearson, J. E.; Novosad, V.; Bader, S. D.; Hoffmann, A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Bader, S. D.; Hoffmann, A.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Field, M.; Sullivan, G. J.] Teledyne Sci Co LLC, Thousand Oaks, CA 90360 USA. RP Mihajlovic, G (reprint author), Hitachi Global Storage Technol, San Jose Res Ctr, San Jose, CA 95135 USA. EM goran.mihajlovic@hitachigst.com RI Bader, Samuel/A-2995-2013; Hoffmann, Axel/A-8152-2009; Novosad, Valentyn/C-2018-2014; Novosad, V /J-4843-2015 OI Hoffmann, Axel/0000-0002-1808-2767; FU U. S. DOEBES [DE-AC02-06CH11357] FX The work at Argonne was supported by the U. S. DOEBES, under Contract No. DE-AC02-06CH11357. NR 18 TC 23 Z9 23 U1 2 U2 18 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 15 PY 2010 VL 96 IS 11 AR 112501 DI 10.1063/1.3360841 PG 3 WC Physics, Applied SC Physics GA 572IW UT WOS:000275825200030 ER PT J AU Ovchinnikov, O Jesse, S Guo, S Seal, K Bintachitt, P Fujii, I Trolier-McKinstry, S Kalinin, SV AF Ovchinnikov, O. Jesse, S. Guo, S. Seal, K. Bintachitt, P. Fujii, I. Trolier-McKinstry, S. Kalinin, S. V. TI Local measurements of Preisach density in polycrystalline ferroelectric capacitors using piezoresponse force spectroscopy SO APPLIED PHYSICS LETTERS LA English DT Article DE electromechanical effects; ferroelectric capacitors; simulated annealing ID DEPENDENCE AB Polarization switching in polycrystalline ferroelectric capacitors is explored using piezoresponse force microscopy (PFM) based first-order reversal curve (FORC) measurements. The band excitation method facilitates decoupling the electromechanical responses from variations in surface elastic properties. A simulated annealing method is developed to estimate the Preisach densities from PFM FORC data. Microscopic and macroscopic Preisach densities are compared, illustrating good agreement between the two. C1 [Ovchinnikov, O.; Jesse, S.; Guo, S.; Seal, K.; Kalinin, S. V.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Ovchinnikov, O.; Jesse, S.; Guo, S.; Seal, K.; Kalinin, S. V.] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. [Ovchinnikov, O.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Bintachitt, P.; Fujii, I.; Trolier-McKinstry, S.] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA. [Bintachitt, P.; Fujii, I.; Trolier-McKinstry, S.] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. RP Jesse, S (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. EM sjesse@ornl.gov; sergei2@ornl.gov RI Kalinin, Sergei/I-9096-2012; Jesse, Stephen/D-3975-2016; Fujii, Ichiro/O-6257-2015; OI Kalinin, Sergei/0000-0001-5354-6152; Jesse, Stephen/0000-0002-1168-8483; Trolier-McKinstry, Susan/0000-0002-7267-9281 FU Center for Dielectric Studies; National Security Science and Engineering Faculty Fellowship; Royal Thai Government FX The research was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U. S. Department of Energy. O.O. acknowledges the ORNL SULI Program. P. B., I. F., and S. T. M. gratefully recognize support from the Center for Dielectric Studies, a National Security Science and Engineering Faculty Fellowship, and the Royal Thai Government. S. V. K. is grateful for Asylum Research Corporation for providing the beta-site for the HV PFM module. NR 15 TC 17 Z9 17 U1 0 U2 14 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 15 PY 2010 VL 96 IS 11 AR 112906 DI 10.1063/1.3360220 PG 3 WC Physics, Applied SC Physics GA 572IW UT WOS:000275825200046 ER PT J AU Regan, W Alem, N Aleman, B Geng, BS Girit, C Maserati, L Wang, F Crommie, M Zettl, A AF Regan, William Alem, Nasim Aleman, Benjamin Geng, Baisong Girit, Caglar Maserati, Lorenzo Wang, Feng Crommie, Michael Zettl, A. TI A direct transfer of layer-area graphene SO APPLIED PHYSICS LETTERS LA English DT Article DE copper; graphene; substrates; transmission electron microscopy ID GRAPHITE; FILMS; MEMBRANES AB A facile method is reported for the direct (polymer-free) transfer of layer-area graphene from metal growth substrates to selected target substrates. The direct route, by avoiding several wet chemical steps and accompanying mechanical stresses and contamination common to all presently reported layer-area graphene transfer methods, enables fabrication of layer-area graphene devices with unprecedented quality. To demonstrate, we directly transfer layer-area graphene from Cu growth substrates to holey amorphous carbon transmission electron microscopy (TEM) grids, resulting in robust, clean, full-coverage graphene grids ideal for high resolution TEM. C1 [Regan, William; Alem, Nasim; Aleman, Benjamin; Geng, Baisong; Girit, Caglar; Maserati, Lorenzo; Wang, Feng; Crommie, Michael; Zettl, A.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Regan, William; Alem, Nasim; Aleman, Benjamin; Girit, Caglar; Wang, Feng; Crommie, Michael; Zettl, A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Alem, Nasim; Aleman, Benjamin; Wang, Feng; Crommie, Michael; Zettl, A.] COINS, Ctr Integrated Nanomech Syst, Berkeley, CA 94720 USA. [Geng, Baisong] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China. [Maserati, Lorenzo] Politecn Milan, I-20133 Milan, Italy. RP Regan, W (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM azettl@physics.berkeley.edu RI Girit, Caglar/D-4845-2014; Zettl, Alex/O-4925-2016; wang, Feng/I-5727-2015; OI Girit, Caglar/0000-0001-8953-9261; Zettl, Alex/0000-0001-6330-136X; Regan, William/0000-0003-0143-9827; Maserati, Lorenzo/0000-0002-9938-8935 FU Office of Naval Research MURI program [N00014-09-1-1066]; U. S. Department of Energy [DE-AC02-05CH11231]; National Science Foundation [EEC-0832819, DMR 0906539]; UC Berkeley A. J. Macchi Fellowship; China Scholarship Council FX We thank W. Gannett for assistance with experiments and B. Kessler and M. Rousseas for helpful discussions. This work was supported in part by the Office of Naval Research MURI program under Grant no. N00014-09-1-1066 which provided for development of the fabrication method, by the Director, Office of Energy Research, Materials Sciences and Engineering Division, of the U. S. Department of Energy under Contract No. DE-AC02-05CH11231 through the sp2-bonded Materials Program which provided for growth facilities, and by the National Science Foundation through the Center of Integrated Nanomechanical Systems under Grant No. EEC-0832819, and through Grant No. DMR 0906539, which provided for microscopy and diffraction characterization. W. R. acknowledges support through a National Science Foundation Graduate Research Fellowship, B. A. acknowledges support from the UC Berkeley A. J. Macchi Fellowship Fund in the Physical Sciences, and B. G. acknowledges support from the China Scholarship Council. NR 14 TC 139 Z9 141 U1 20 U2 207 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 15 PY 2010 VL 96 IS 11 AR 113102 DI 10.1063/1.3337091 PG 3 WC Physics, Applied SC Physics GA 572IW UT WOS:000275825200049 ER PT J AU Rumaiz, AK Woicik, JC Wang, WG Jordan-Sweet, J Jaffari, GH Ni, C Xiao, JQ Chien, CL AF Rumaiz, Abdul K. Woicik, J. C. Wang, W. G. Jordan-Sweet, Jean Jaffari, G. H. Ni, C. Xiao, John Q. Chien, C. L. TI Effects of annealing on the local structure of Fe and Co in CoFeB/MgO/CoFeB tunnel junctions: An extended x-ray-absorption fine structure study SO APPLIED PHYSICS LETTERS LA English DT Article DE annealing; boron alloys; cobalt alloys; crystallisation; Debye-Waller factors; EXAFS; iron alloys; magnesium compounds; magnetic structure; tunnelling magnetoresistance ID ROOM-TEMPERATURE; MAGNETORESISTANCE AB Extended x-ray-absorption fine structure (EXAFS) was used to study the evolution of the local structure of Fe and Co as a function of annealing time in CoFeB/MgO/CoFeB magnetic tunnel junctions. EXAFS indicates B depletion and crystallization of the CoFeB layers within a few seconds of the post growth high temperature anneal. The decrease in first-shell Debye-Waller factor and hence the increase in structural order during annealing explains the increase in tunnel magnetoresistance observed as a result of post deposition annealing. C1 [Rumaiz, Abdul K.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. [Woicik, J. C.] NIST, Gaithersburg, MD 20899 USA. [Wang, W. G.; Chien, C. L.] Johns Hopkins Univ, Dept Phys, Baltimore, MD 21218 USA. [Jordan-Sweet, Jean] IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA. [Jaffari, G. H.; Xiao, John Q.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA. [Ni, C.] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA. RP Rumaiz, AK (reprint author), Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. EM rumaiz@bnl.gov RI Wang, Weigang /C-1341-2010; Ni, Chaoying/B-7300-2012; Rumaiz, Abdul/J-5084-2012 FU U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886] FX A. K. R. would like to thank Peter Siddons NSLS) for support and Joseph Dvorak (NSLS) for discussions. Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. NR 24 TC 18 Z9 18 U1 1 U2 19 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 15 PY 2010 VL 96 IS 11 AR 112502 DI 10.1063/1.3364137 PG 3 WC Physics, Applied SC Physics GA 572IW UT WOS:000275825200031 ER PT J AU Mace, DL Varnado, N Zhang, WP Frise, E Ohler, U AF Mace, Daniel L. Varnado, Nicole Zhang, Weiping Frise, Erwin Ohler, Uwe TI Extraction and comparison of gene expression patterns from 2D RNA in situ hybridization images SO BIOINFORMATICS LA English DT Article ID TRANSCRIPTION FACTOR EXPRESSION; DROSOPHILA BLASTODERM; CELLULAR RESOLUTION; QUANTIFICATION; SEGMENTATION; ELEGANS; EMBRYOS AB Motivation: Recent advancements in high-throughput imaging have created new large datasets with tens of thousands of gene expression images. Methods for capturing these spatial and/or temporal expression patterns include in situ hybridization or fluorescent reporter constructs or tags, and results are still frequently assessed by subjective qualitative comparisons. In order to deal with available large datasets, fully automated analysis methods must be developed to properly normalize and model spatial expression patterns. Results: We have developed image segmentation and registration methods to identify and extract spatial gene expression patterns from RNA in situ hybridization experiments of Drosophila embryos. These methods allow us to normalize and extract expression information for 78 621 images from 3724 genes across six time stages. The similarity between gene expression patterns is computed using four scoring metrics: mean squared error, Haar wavelet distance, mutual information and spatial mutual information (SMI). We additionally propose a strategy to calculate the significance of the similarity between two expression images, by generating surrogate datasets with similar spatial expression patterns using a Monte Carlo swap sampler. On data from an early development time stage, we show that SMI provides the most biologically relevant metric of comparison, and that our significance testing generalizes metrics to achieve similar performance. We exemplify the application of spatial metrics on the well-known Drosophila segmentation network. C1 [Mace, Daniel L.; Varnado, Nicole; Zhang, Weiping; Ohler, Uwe] Duke Univ, Inst Genome Sci & Policy, Durham, NC 27708 USA. [Mace, Daniel L.] Duke Univ, Computat Biol & Bioinformat Grad Program, Durham, NC 27708 USA. [Frise, Erwin] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Genome & Computat Biol, Berkeley, CA 94720 USA. RP Ohler, U (reprint author), Duke Univ, Inst Genome Sci & Policy, Durham, NC 27708 USA. EM uwe.ohler@duke.edu FU National Science Foundation [MCB 0618304]; Human Frontier Science Program FX National Science Foundation (grant # MCB 0618304); the Human Frontier Science Program. NR 41 TC 17 Z9 18 U1 0 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 1367-4803 EI 1460-2059 J9 BIOINFORMATICS JI Bioinformatics PD MAR 15 PY 2010 VL 26 IS 6 BP 761 EP 769 DI 10.1093/bioinformatics/btp658 PG 9 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Computer Science, Interdisciplinary Applications; Mathematical & Computational Biology; Statistics & Probability SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Computer Science; Mathematical & Computational Biology; Mathematics GA 564UO UT WOS:000275243500008 PM 19942587 ER PT J AU Thompson, A Steefel, CI Perdrial, N Chorover, J AF Thompson, Aaron Steefel, Carl I. Perdrial, Nicolas Chorover, Jon TI Contaminant Desorption during Long-Term Leaching of Hydroxide-Weathered Hanford Sediments SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID SIMULATED TANK-WASTE; VADOSE ZONE; SUBSURFACE SEDIMENTS; CESIUM; CANCRINITE; STRONTIUM; SITE; KAOLINITE; SODALITE; TRANSFORMATIONS AB Mineral sorption/coprecipitation is thought to be a principal sequestration mechanism for radioactive (90)Sr and (137)Cs in sediments impacted by hyperalkaline, high-level radioactive waste (HLRW) at the DOE's Hanford site. However, the long-term persistence of neo-formed, contaminant bearing phases after removal of the HLRW source is unknown. We subjected pristine Hanford sediments to hyperalkaline Na-Al-NO(3)-OH solutions containing Sr, Cs, and I at 10(-5), 10(-5), and 10(-7) molal, respectively, for 182 days with either <10 ppmv or 385 ppmv pCO(2). This resulted in the formation of feldspathoid minerals. We leached these weathered sediments with dilute, neutral-pH solutions. After 500 pore volumes (PVs), effluent Sr, Cs, NO(3), Al, Si, and pH reached a steady-state with concentrations elevated above those of feedwater. Reactive transport modeling suggests that even after 500 PV, Cs desorption can be explained by ion exchange reactions, whereas Sr desorption is best described by dissolution of Sr-substituted, neo-formed minerals. While, pCO(2) had no effect on Sr or Cs sorption, sediments weathered at <10 ppmv pCO(2) did desorb more Sr (66% vs 28%) and Cs (13% vs 8%) during leaching than those weathered at 385 ppmv pCO(2). Thus, the dissolution of neo-formed aluminosilicates may represent a long-term, low-level supply of (90)Sr at the Hanford site. C1 [Thompson, Aaron; Perdrial, Nicolas; Chorover, Jon] Univ Arizona, Dept Soil Water & Environm Sci, Tucson, AZ 85721 USA. [Steefel, Carl I.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Thompson, A (reprint author), Univ Georgia, Dept Crop & Soil Sci, Athens, GA 30602 USA. EM AaronT@uga.edu RI Steefel, Carl/B-7758-2010 FU U.S. Department of Energy [DE-FG02-06ER64190, DE-AC02-05CH11231] FX We thank R. Jeff Serne for his invaluable assistance in selection Of Suitable sediment material. We thank Mary Kay Amistadi for ICP-MS analysis and Philip Anderson for TEM support. Comments from three anonymous reviewers greatly improved die quality of this manuscript. This work was supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research (Subsurface Environmental System-Sciences Program), Under Grant No. DE-FG02-06ER64190 and Contract No. DE-AC02-05CH11231. NR 32 TC 15 Z9 15 U1 0 U2 19 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD MAR 15 PY 2010 VL 44 IS 6 BP 1992 EP 1997 DI 10.1021/es902043e PG 6 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 565WG UT WOS:000275325600020 PM 20170202 ER PT J AU Bourg, IC Sposito, G AF Bourg, Ian C. Sposito, Garrison TI Connecting the Molecular Scale to the Continuum Scale for Diffusion Processes in Smectite-Rich Porous Media SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID COMPACTED SODIUM MONTMORILLONITE; MONTE-CARLO-SIMULATION; ACTIVATION-ENERGY; SELF-DIFFUSION; DRY DENSITY; EXCHANGEABLE CATIONS; DYNAMICS SIMULATIONS; INTERLAYER STRUCTURE; NEUTRON-SCATTERING; AQUEOUS-SOLUTIONS AB In this paper, we address the manner in which the continuum-scale diffusive properties of smectite-rich porous media arise from their molecular- and pore-scale features. Our starting point is a successful model of the continuum-scale apparent diffusion coefficient for water tracers and cations, which decomposes it as a sum of pore-scale terms describing diffusion in macropore and interlayer "compartments." We then apply molecular dynamics (MD) simulations to determine molecular-scale diffusion coefficients D-interlayer of water tracers and representative cations (Na+, Cs+, Sr2+) in Na-smectite interlayers. We find that a remarkably simple expression relates D-interlayer to the pore-scale parameter delta(nanopole) <= 1, a constrictivity factor that accounts for the lower mobility in interlayers as compared to macropores: delta(nanopora) = D-interlayer/D-0r where D-0 is the diffusion coefficient in bulk liquid water. Using this scaling expression, we can accurately predict the apparent diffusion coefficients of tracers H2O, Na+, Sr2+, and Cs+ in compacted Na-smectite-rich materials. C1 [Bourg, Ian C.; Sposito, Garrison] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Dept Geochem, Berkeley, CA 94720 USA. RP Bourg, IC (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Dept Geochem, Berkeley, CA 94720 USA. EM icbourg@lbl.gov RI Bourg, Ian/A-6405-2013; OI Bourg, Ian/0000-0002-5265-7229 FU U.S. Department of Energy [DE-AC02-05CH11231] FX The research reported in this paper was supported by the Director, Office of Energy Research, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract DE-AC02-05CH11231. This research used resources of the National Energy Research Scientific Computing Center, which is Supported by the Office of Science, U.S. Department of Energy under Contract DE-AC02-05CH11231. NR 74 TC 42 Z9 42 U1 1 U2 44 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD MAR 15 PY 2010 VL 44 IS 6 BP 2085 EP 2091 DI 10.1021/es903645a PG 7 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA 565WG UT WOS:000275325600034 PM 20146523 ER PT J AU Lee, SS Park, C Fenter, P Sturchio, NC Nagy, KL AF Lee, Sang Soo Park, Changyong Fenter, Paul Sturchio, Nell C. Nagy, Kathryn L. TI Competitive adsorption of strontium and fulvic acid at the muscovite-solution interface observed with resonant anomalous X-ray reflectivity SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID AQUATIC HUMIC SUBSTANCES; METAL OXIDE INTERFACES; NATURAL ORGANIC-MATTER; ABSORPTION SPECTROSCOPY; AGRICULTURAL SOIL; WATER INTERFACES; MINERAL SURFACES; ALUMINUM-OXIDE; LAKE WATER; SORPTION AB Molecular-scale distributions of Sr(2+) and fulvic acid (FA) adsorbed on the muscovite (0 0 1) surface were investigated using in situ specular X-ray reflectivity (XR) and resonant anomalous X-ray reflectivity (RAXR). The total amount of Sr(2+) adsorbed from a 1 x 10(-2) mol/kg SrCl(2) and 100 mg/kg Elliott Soil Fulvic Acid 11 (ESFA 11) solution at pH 5.5 compensated 81 +/- 5% of the muscovite surface charge, less than previously measured (118 5%) in an ESFA II-free solution with the same Sr concentration and pH. Inner-sphere (IS) and outer-sphere (OS) Sr2+ constituted 87% of the total adsorbed species in IS:OS proportions of 19:81 compared to 42:58 in the solution without FA, suggesting that adsorbed FA competes with the IS Sr2+ for surface sites. The coverage of both IS and OS Sr(2+) decreased even more in a pH 3.5 solution containing the same concentration of FA and 0.5 x 10(-2) mol/kg Sr(NO(3))(2), whereas a significant amount of Sr(2+) accumulated farther from the surface in the FA layer. The amount of Sr incorporated in the similar to 10 angstrom thick FA layer decreased by 79% with decreasing FA concentration (100 I mg/kg) and increasing Sr(2+) concentration (0.5 x 10(-2) -> x 10(-2) mol/kg) and pH (3.5 -> 3.6). These results indicate not only that adsorbed FA molecules (and perhaps also H(3)O(+)) displace Sr(2+) near the muscovite surface, but also that the sorbed FA film provides binding sites for additional Sr(2+) away from the surface. When a muscovite crystal pre-coated with FA after reaction in a 100 mg/kg ESFA 11 solution for 50 h was subsequently reacted with a 0.5 x 10(-2) mol/kg Sr(NO(3))(2) and 100 mg/kg ESFA II solution at pH 3.7, a significant fraction of Sr2+ was distributed in the outer part of the FA film similar to that observed on fresh muscovite reacted at pH 3.5 with a pre-mixed Sr-FA solution at the same concentrations. However, this Sr(2+) sorbed in the pre-adsorbed organic film was more widely distributed and had a lower coverage, suggesting that pre-sorbed FA may undergo fractionation and/or conformational changes that diminish its capacity, and that of the muscovite (0 0 1) surface, for adsorbing the aqueous Sr cation. (C) 2009 Elsevier Ltd. All rights reserved. C1 [Lee, Sang Soo; Sturchio, Nell C.; Nagy, Kathryn L.] Univ Illinois, Dept Earth & Environm Sci, Chicago, IL 60607 USA. [Fenter, Paul; Sturchio, Nell C.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. RP Lee, SS (reprint author), Univ Illinois, Dept Earth & Environm Sci, 845 W Taylor St MC 186, Chicago, IL 60607 USA. EM sslee@anl.gov RI Lee, Sang Soo/B-9046-2012; Park, Changyong/A-8544-2008 OI Park, Changyong/0000-0002-3363-5788 NR 61 TC 23 Z9 23 U1 5 U2 36 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD MAR 15 PY 2010 VL 74 IS 6 BP 1762 EP 1776 DI 10.1016/j.gca.2009.12.010 PG 15 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 558DY UT WOS:000274722200002 ER PT J AU Maggi, F Riley, WJ AF Maggi, Federico Riley, William J. TI Mathematical treatment of isotopologue and isotopomer speciation and fractionation in biochemical kinetics SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID DENITRIFICATION; N2O; NITRIFICATION; TRANSPORT; MODEL; SOIL AB We present a mathematical treatment of the kinetic equations that describe isotopologue and isotopomer speciation and fractionation during enzyme-catalyzed biochemical reactions. These equations, presented here with the name GEBIK (general equations for biochemical isotope kinetics) and GEBIF (general equations for biochemical isotope fractionation), take into account microbial biomass and enzyme dynamics, reaction stoichiometry, isotope substitution number, and isotope location within each isotopologue and isotopomer. In addition to solving the complete GEBIK and GEBIF, we also present and discuss two approximations to the full solutions under the assumption of biomass-free and enzyme steady-state, and under the quasi-steady-state assumption as applied to the complexation rate. The complete and approximate approaches are applied to observations of biological denitrification in soils. Our analysis highlights that the full GEBIK and GEBIF provide a more accurate description of concentrations and isotopic compositions of substrates and products throughout the reaction than do the approximate forms. We demonstrate that the isotopic effects of a biochemical reaction depend, in the most general case, on substrate and complex concentrations and, therefore, the fractionation factor is a function of time. We also demonstrate that inverse isotopic effects can occur for values of the fractionation factor smaller than 1, and that reactions that do not discriminate isotopes do not necessarily imply a fractionation factor equal to 1. (C) 2009 Elsevier Ltd. All rights reserved. C1 [Maggi, Federico] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia. [Riley, William J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Maggi, F (reprint author), Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia. EM f.maggi@usyd.edu.au RI Riley, William/D-3345-2015 OI Riley, William/0000-0002-4615-2304 FU Office of Science, of the U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by Laboratory Directed Research and Development (LDRD) funding from Berkeley Lab, provided by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 21 TC 14 Z9 14 U1 0 U2 18 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD MAR 15 PY 2010 VL 74 IS 6 BP 1823 EP 1835 DI 10.1016/j.gca.2009.12.021 PG 13 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 558DY UT WOS:000274722200007 ER PT J AU Dambournet, D Belharouak, I Amine, K AF Dambournet, Damien Belharouak, Ilias Amine, Khalil TI MLi2Ti6O14 (M = Sr, Ba, 2Na) Lithium Insertion Titanate Materials: A Comparative Study SO INORGANIC CHEMISTRY LA English DT Article AB MLi2Ti6O14 (M = Sr, Ba, 2Na) titanates have been investigated as lithium insertion materials for lithium-ion batteries. A comparative study has been undertaken based on the structure, morphology, and electrochemical properties of the titanate materials, which were prepared by sol-gel synthesis. Their lithium insertion behavior was analyzed by crystallographic considerations. While Na2Li2Ti6O14 can reversibly host two Li+ ions, SrLi2Ti6O14 and BaLi2Ti6O14 can reversibly insert almost four lithium ions per unit formula. Among the three materials, SrLi2Ti6O14 showed superior capacity and rate capability. It was concluded that this class of materials could be of practical use in high-power lithium batteries for transportation applications. C1 [Dambournet, Damien; Belharouak, Ilias; Amine, Khalil] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. RP Dambournet, D (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM dambournet@anl.gov; belharouak@anl.gov RI Amine, Khalil/K-9344-2013; OI Belharouak, Ilias/0000-0002-3985-0278 FU U.S. Department of Energy; FreedomCAR; Vehicle Technologies Office; U.S. Department of Energy by UChicago Argonne, LLC [DE-AC02-06CH11357] FX This research was funded by the U.S. Department of Energy, FreedomCAR, and Vehicle Technologies Office. Argonne National Laboratory is operated for the U.S. Department of Energy by UChicago Argonne, LLC, under Contract DE-AC02-06CH11357, NR 8 TC 39 Z9 39 U1 8 U2 34 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD MAR 15 PY 2010 VL 49 IS 6 BP 2822 EP 2826 DI 10.1021/ic90222g PG 5 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 563WC UT WOS:000275164900033 PM 20163149 ER PT J AU Jakubikova, E Martin, RL Batista, ER AF Jakubikova, Elena Martin, Richard L. Batista, Enrique R. TI Systematic Study of Modifications to Ruthenium(II) Polypyridine Dyads for Electron Injection Enhancement SO INORGANIC CHEMISTRY LA English DT Article ID ROOM-TEMPERATURE LUMINESCENCE; DENSITY-FUNCTIONAL THEORY; EFFECTIVE CORE POTENTIALS; TRIDENTATE LIGANDS; ARTIFICIAL PHOTOSYNTHESIS; ELECTROCHEMICAL OXIDATION; PHOTOPHYSICAL PROPERTIES; EXCITATION-ENERGIES; ABSORPTION-SPECTRA; CHARGE SEPARATION AB Spatial localization of excited-state electrons in transition-metal complexes used as photocatalysts or dye sensitizers in solar cells is important for efficient electron injection into the metal oxide nanoparticles. We use density functional theory to investigate the excited states in a prototype catalyst-chromophore assembly [(bpy)(H2O)Ru(tpy-tpy)Ru(tpy)](4+) ([Ru(tpy)-(bpy)(H2O)](2+) = catalyst, [Ru(tpy)(2)](2+) = chromophore, tpy = 2,2':6',2 ''-terpyridine, and bpy = 2,2'-bipyridine) and a series of related compounds. We explore several bridging ligand and terminal tpy ligand modifications of the prototype assembly, with the aim of inducing electronic excitations into the terminal tpy ligand upon irradiation with visible light. The excitations into the terminal ligand (i.e., ligand covalently attached to the semiconductor in the photocatalytic synthetic cell) should, in turn, enhance electron injection into the semiconductor. Our results suggest that both introduction of a spacer group (such as phenylene or alkane) into the tpy-tpy bridge and replacement of the terminal tpy group by a more extended pi-conjugated ligand are necessary to shift the electronic excitations from the bridging ligand into the terminal ligand. These results have implications for the design of photocatalysts and dye-sensitizer assemblies based on ruthenium(II) terpyridine compounds. C1 [Jakubikova, Elena; Martin, Richard L.; Batista, Enrique R.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Batista, ER (reprint author), Los Alamos Natl Lab, Div Theoret, MS B268, Los Alamos, NM 87545 USA. EM erb@lanl.gov FU Laboratory Directed Research and Development (LDRD); U.S. Department of Energy [DE-AC52-06NA25396] FX This work was supported by the Laboratory Directed Research and Development (LDRD) program at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under Contract DE-AC52-06NA25396. NR 50 TC 24 Z9 24 U1 1 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0020-1669 EI 1520-510X J9 INORG CHEM JI Inorg. Chem. PD MAR 15 PY 2010 VL 49 IS 6 BP 2975 EP 2982 DI 10.1021/ic902504y PG 8 WC Chemistry, Inorganic & Nuclear SC Chemistry GA 563WC UT WOS:000275164900050 PM 20141117 ER PT J AU Allison, SW Gillies, GT AF Allison, S. W. Gillies, G. T. TI Dual-doped thermographic phosphor particles as surrogates for green fluorescent protein-labeled cells in tests of cytometric neurocatheters SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE brain; catheters; cellular transport; europium; fluorescence; gadolinium compounds; lanthanum compounds; molecular biophysics; neurophysiology; phosphors; proteins; slurries ID PHANTOM; INSTRUMENTATION; THERMOMETRY; INFUSION AB We investigated the laser-induced fluorescence of particles of a compound thermographic phosphor La(2)O(2)S:Eu(1%) and Gd(2)O(2)S:Eu(1%) to see if they can serve as a surrogate for cells transfected with the green fluorescent protein, in tests of neurocatheters used for intraparenchymal cell delivery. At an excitation wavelength of 337 nm and a concentration of approximate to 2x10(6) particles ml(-1), the resulting slurries produced fluorescence intensities at 625 nm that were within a factor of 2 of those produced by similar number densities of relevant cells, thus suggesting the utility of this approach. C1 [Allison, S. W.] Oak Ridge Natl Lab, Sensors & Controls Res Grp, Oak Ridge, TN 37831 USA. [Gillies, G. T.] Univ Virginia, Dept Mech & Aerosp Engn, Charlottesville, VA 22904 USA. [Gillies, G. T.] Virginia Commonwealth Univ, Dept Neurosurg, Richmond, VA 23298 USA. RP Allison, SW (reprint author), Oak Ridge Natl Lab, Sensors & Controls Res Grp, Oak Ridge, TN 37831 USA. EM allisonsw@ornl.gov FU U.S. Department of Energy [DE-AC05-00OR22725]; Kopf Family Foundation, Inc.; University of Virginia Patent Foundation FX The authors thank their colleagues B. M. Evans, S. M. Goedeke and M. R. Cates (ORNL) and H. L. Fillmore and W. C. Broaddus, M. D. (VCU) for their interest in this work and for several useful discussions. Research sponsored in part by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. The work at the University of Virginia was funded in part by the Kopf Family Foundation, Inc. and the Royalty Distribution Program of the University of Virginia Patent Foundation. NR 17 TC 0 Z9 0 U1 1 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 064904 DI 10.1063/1.3359656 PG 5 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800115 ER PT J AU Cawkwell, MJ Ramos, KJ Hooks, DE Sewell, TD AF Cawkwell, M. J. Ramos, K. J. Hooks, D. E. Sewell, Thomas D. TI Homogeneous dislocation nucleation in cyclotrimethylene trinitramine under shock loading SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE dislocation loops; dislocation nucleation; elasticity; molecular configurations; molecular dynamics method; organic compounds; plasticity; shock wave effects; stacking faults; stress effects ID PENTAERYTHRITOL TETRANITRATE; CRYSTAL-STRUCTURE; SINGLE-CRYSTALS; HIGH-PRESSURE; FORCE-FIELD; RDX; SIMULATIONS; ORIENTATION; INITIATION; ENERGIES AB The propagation of shock waves normal to (111) in the energetic molecular crystal cyclotrimethylene trinitramine (RDX) has been studied using large-scale molecular dynamics simulations. Partial dislocation loops with Burgers vector 0.16[010] are nucleated homogeneously on (001) at Rankine-Hugoniot shock pressures greater than 1.3 GPa. Calculations of the [010] cross-section of the (001) generalized stacking fault energy surface as a function of applied pressure along [001] reveals that the stacking fault enclosed by the partial dislocation loops is rendered metastable by a stress-induced change in molecular conformation. Furthermore, large-scale molecular dynamics simulations performed on quasi-two-dimensional (111)-oriented single crystals show a two-wave elastic-plastic response with a "galloping" plastic wave. We propose that the onset of homogeneous dislocation nucleation accounts for the abrupt change in the elastic-plastic response of macroscopic (111)-oriented RDX single crystals observed in recent experiments by giving rise to an anomalous plastic hardening. C1 [Cawkwell, M. J.] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Ramos, K. J.; Hooks, D. E.] Los Alamos Natl Lab, Dynam & Energet Mat Div, Los Alamos, NM 87545 USA. [Sewell, Thomas D.] Univ Missouri, Dept Chem, Columbia, MO 65211 USA. RP Cawkwell, MJ (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM cawkwell@lanl.gov OI Cawkwell, Marc/0000-0002-8919-3368 NR 39 TC 47 Z9 48 U1 1 U2 22 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 063512 DI 10.1063/1.3305630 PG 11 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800038 ER PT J AU Chen, K Tamura, N Tang, W Kunz, M Chou, YC Tu, KN Lai, YS AF Chen, Kai Tamura, N. Tang, Wei Kunz, M. Chou, Yi-Chia Tu, K. N. Lai, Yi-Shao TI High precision thermal stress study on flip chips by synchrotron polychromatic x-ray microdiffraction SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE flip-chip devices; internal stresses; stress-strain relations; thermal stresses; X-ray diffraction ID THIN FILM/SUBSTRATE SYSTEMS; MISFIT STRAIN DISTRIBUTIONS; ARBITRARY FILM THICKNESS; SOLDER JOINTS; CURVATURE; RESOLUTION; UNDERFILL; NONUNIFORM; SI AB The bending and residual stress of flip chips caused by the mismatch of thermal expansion between the chip and the substrate have been measured by polychromatic microfocused synchrotron x-ray beam. Precise orientation information as a function of position on the chip was obtained from Laue diffraction patterns, so that the bending angle with respect to a reference position at the center of the chip can be calculated at each position. This in turn allows deducing the local curvature of the entire flip chip. Local stress distribution was then mapped by applying a modified Stoney's stress-strain equation to the measured curvature. Our study shows that thermal stress on the circuits and the solder joints in a flip chip strongly depend on temperature and the distance from the center of the chip, indicating that interconnects at the corner and edge of a flip chip are of reliability concerns. C1 [Chen, Kai; Tamura, N.; Kunz, M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Chen, Kai; Tang, Wei; Chou, Yi-Chia; Tu, K. N.] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA. [Lai, Yi-Shao] Adv Semicond Engn, Kaohsiung 811, Taiwan. RP Chen, K (reprint author), Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA. EM kchen@lbl.gov RI Lai, Yi-Shao/B-2905-2008; Kunz, Martin/K-4491-2012; Chen, Kai/O-5662-2014; Tang, Wei/A-6917-2015; OI Kunz, Martin/0000-0001-9769-9900; Chen, Kai/0000-0002-4917-4445; Tang, Wei/0000-0001-6113-7201; /0000-0002-7775-2927 FU SRC [KJ-1772]; Seoul Technopark; U.S. Department of Energy [DE-AC02-05CH11231]; NSF [0416243] FX The authors at UCLA would like to acknowledge the support from SRC contract KJ-1772 and Seoul Technopark. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Science Division, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory. The microdiffraction program at the ALS on beamline 12.3.2 was made possible by NSF (Grant No. 0416243). NR 27 TC 10 Z9 10 U1 0 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 063502 DI 10.1063/1.3309750 PG 5 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800028 ER PT J AU Hurley, DH Reese, SJ Park, SK Utegulov, Z Kennedy, JR Telschow, KL AF Hurley, D. H. Reese, S. J. Park, S. K. Utegulov, Z. Kennedy, J. R. Telschow, K. L. TI In situ laser-based resonant ultrasound measurements of microstructure mediated mechanical property evolution SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE copper; crystal microstructure; dislocation density; dislocation pinning; electron backscattering; measurement by laser beam; recrystallisation; recrystallisation annealing; texture; ultrasonic measurement ID INTERNAL-FRICTION; POLYCRYSTALLINE COPPER; NEUTRON IRRADIATION; ELASTIC-CONSTANTS; RECRYSTALLIZATION; SPECTROSCOPY; CRYSTALS; MODULUS AB In situ laser-based resonant ultrasound spectroscopy is used to characterize the development of a recrystallized microstructure in a high purity copper sample. The modal shapes, used for mode identification, of several resonant modes are determined before and after annealing by raster scanning the laser interferometric probe. This information is used to isolate the motion of individual modes during high temperature annealing. The evolution of a particular mode during annealing is examined in detail. During recrystallization, the center frequency of this mode shifts by approximately 20% of the original value. Using electron backscatter data it is shown that the majority of this shift is due to changes in the polycrystal average elastic stiffness tensor, driven by changes in texture, and that changes in dislocation density and pinning length are secondary influences. C1 [Hurley, D. H.; Reese, S. J.; Utegulov, Z.; Kennedy, J. R.; Telschow, K. L.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Park, S. K.] Korea Atom Energy Res Inst, Taejon 305353, South Korea. RP Hurley, DH (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM david.hurley@inl.gov OI Reese, Stephen/0000-0003-1390-292X NR 33 TC 12 Z9 12 U1 1 U2 7 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 063510 DI 10.1063/1.3327428 PG 5 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800036 ER PT J AU Meinert, M Schmalhorst, JM Ebke, D Liu, NN Thomas, A Reiss, G Kanak, J Stobiecki, T Arenholz, E AF Meinert, Markus Schmalhorst, Jan-Michael Ebke, Daniel Liu, Ning-Ning Thomas, Andy Reiss, Guenter Kanak, Jaroslaw Stobiecki, Tomasz Arenholz, Elke TI Structural and magnetic properties of Co-Mn-Sb thin films SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE alumina; cobalt compounds; crystal structure; interface magnetism; magnetic circular dichroism; magnetic moments; magnetic thin films; magnetic tunnelling; magnetoresistance; manganese compounds; X-ray absorption spectra ID FULL-HEUSLER ALLOYS; TUNNEL-JUNCTIONS; CIRCULAR-DICHROISM; MAGNETORESISTANCE AB Thin Co-Mn-Sb films of different compositions were investigated and utilized as electrodes in alumina based magnetic tunnel junctions with CoFe counterelectrode. The preparation conditions were optimized with respect to magnetic and structural properties. The Co-Mn-Sb/Al-O interface was analyzed by x-ray absorption spectroscopy and magnetic circular dichroism with particular focus on the element-specific magnetic moments. Co-Mn-Sb crystallizes in different complex cubic structures depending on its composition. The magnetic moments of Co and Mn are ferromagnetically coupled in all cases. A tunnel magnetoresistance ratio of up to 24% at 13 K was found and indicates that Co-Mn-Sb is not a ferromagnetic half-metal. These results are compared to recent works on the structure and predictions of the electronic properties. C1 [Meinert, Markus; Schmalhorst, Jan-Michael; Ebke, Daniel; Liu, Ning-Ning; Thomas, Andy; Reiss, Guenter] Univ Bielefeld, Dept Phys Thin Films & Phys Nanostruct, D-33501 Bielefeld, Germany. [Kanak, Jaroslaw; Stobiecki, Tomasz] Univ Sci & Technol, Dept Elect, PL-30059 Krakow, Poland. [Arenholz, Elke] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Meinert, M (reprint author), Univ Bielefeld, Dept Phys Thin Films & Phys Nanostruct, D-33501 Bielefeld, Germany. EM meinert@physik.uni-bielefeld.de; jschmalh@physik.uni-bielefeld.de RI Ebke, Daniel/A-4357-2010; Meinert, Markus/E-8794-2011; Schmalhorst, Jan/E-9951-2011; Thomas, Andy/C-7210-2008; Reiss, Gunter/A-3423-2010; Kanak, Jaroslaw/N-4668-2015 OI Meinert, Markus/0000-0002-7813-600X; Thomas, Andy/0000-0001-8594-9060; Reiss, Gunter/0000-0002-0918-5940; FU Deutsche Forschungsgemeinschaft (DFG); Deutscher Akademischer Austausch Dienst (DAAD); U.S. Department of Energy [DE-AC02-05CH11231]; XRD [DAAD/10/2006] FX The authors gratefully acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) and the Deutscher Akademischer Austausch Dienst (DAAD) and the opportunity to work at BL 6.3.1 of the Advanced Light Source, Berkeley, USA. The ALS is supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. For financial support of the XRD measurements under Contract No. DAAD/10/2006 M. M., T. S., and J. K. gratefully acknowledge the Ministry of Science and Higher Education of Poland. NR 43 TC 0 Z9 0 U1 0 U2 12 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-8979 EI 1089-7550 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 063901 DI 10.1063/1.3294643 PG 7 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800064 ER PT J AU Patterson, WM Sheik-Bahae, M Epstein, RI Hehlen, MP AF Patterson, W. M. Sheik-Bahae, M. Epstein, R. I. Hehlen, M. P. TI Model of laser-induced temperature changes in solid-state optical refrigerators SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE laser cooling; optical pumping; photoluminescence; quantum optics ID GOLD NANOPARTICLES; SCATTERING AB We present an efficient and numerically stable method to calculate time-dependent, laser-induced temperature distributions in solids and provide a detailed description of the computational procedure and its implementation. This study combines the two-dimensional heat equation with laser-induced heat generation and temperature-dependent luminescence. The time-dependent optical response of a system is obtained numerically by the Crank-Nicolson method. This general model is applied to the specific case of optical refrigeration in ytterbium (Yb(3+)) doped fluorozirconate glass (ZBLAN). The laser-induced temperature change upon optical pumping and the respective transient luminescence response are calculated and compared to experimental data. The model successfully predicts the zero-crossing temperature, the net quantum efficiency, and the functional shape of the transients. We find that the laser-cooling transients have a fast and a slow component that are determined by the excited-state lifetime of the luminescent ion and the thermal properties of the bulk, respectively. The tools presented here may find application in the design of a wide range of optical and optoelectronic devices. C1 [Patterson, W. M.; Sheik-Bahae, M.] Univ New Mexico, Albuquerque, NM 87131 USA. [Epstein, R. I.; Hehlen, M. P.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Patterson, WM (reprint author), Univ New Mexico, 800 Yale Blvd NE, Albuquerque, NM 87131 USA. EM wendy5@unm.edu OI Patterson, Wendy/0000-0002-8761-8457 FU Air Force Office of Scientific Research; U.S. Department of Energy [DE-AC52-06NA25396] FX We gratefully acknowledge the support of the Air Force Office of Scientific Research under the Multidisciplinary University Research Initiative (MURI) program and the U.S. Department of Energy through the LANL/LDRD Program for this work. Los Alamos National Laboratory, an affirmative action equal opportunity employer, is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under Contract No. DE-AC52-06NA25396. NR 27 TC 4 Z9 4 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 063108 DI 10.1063/1.3277009 PG 9 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800016 ER PT J AU Scrymgeour, DA Highstrete, C Lee, YJ Hsu, JWP Lee, M AF Scrymgeour, David A. Highstrete, Clark Lee, Yun-Ju Hsu, Julia W. -P. Lee, Mark TI High frequency impedance spectroscopy on ZnO nanorod arrays SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE capacitors; contact resistance; electrical resistivity; electrochemical impedance spectroscopy; electrophoresis; II-VI semiconductors; nanofabrication; nanorods; semiconductor growth; wide band gap semiconductors; zinc compounds ID NETWORK-ANALYZER CALIBRATION; ELECTRICAL-PROPERTIES; NANOWIRE ARRAYS; BULK ZNO; FABRICATION AB The radio-frequency (rf)-to-microwave impedance spectra of solution grown ZnO nanorods have been measured from 0.1 to 50 GHz using vector network analysis. To increase interaction with rf/microwave fields, the nanorods were assembled by dielectrophoresis into arrays on coplanar waveguides. The average complex impedance frequency response per nanorod in an array was accurately modeled as a simple three-element circuit composed of the inherent nanorod resistance in series with a parallel resistor-capacitor representing the contact. The nanorod resistance dominates at high frequencies while the contact impedance dominates at low frequencies, permitting a quantitative separation of contact effects from nanorod properties. The average inherent resistivity of a nanorod was found to be similar to 10(-2) cm, indicating the nanorods were unintentionally highly doped. Accuracy of the inherent resistance measurement was limited by the highly conductive nature of the nanorods used and the upper limit of the experimental frequency range. Determination of the nanorod resistance becomes more accurate for higher resistivity nanorods, so high frequency impedance spectroscopy will provide an increasingly valuable electrical characterization technique as the ability to synthesize more intrinsic (i.e., lower unintentional dopant density) ZnO nanorods improves. C1 [Scrymgeour, David A.; Hsu, Julia W. -P.] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA. RP Scrymgeour, DA (reprint author), Sandia Natl Labs, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA. EM dscrymg@sandia.gov RI Scrymgeour, David/C-1981-2008 FU National Security Science and Engineering; Sandia Laboratory Directed Research and Development program; Center for Integrated Nanotechnologies; United States Department of Energy [DE-AC04-94AL-5000] FX We thank R. Grubbs for coating the ZnO nanorods with TiO2 films by ALD and E. Spoerke for synthesis CdS coated ZnO nanorods. D. A. S acknowledges an appointment to the Sandia National Laboratories Truman Fellowship in National Security Science and Engineering. This work is also supported in part from the Sandia Laboratory Directed Research and Development program and from the Center for Integrated Nanotechnologies. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Co., for the United States Department of Energy's National Nuclear Security Administration under Contract No. DE-AC04-94AL-5000. NR 23 TC 4 Z9 4 U1 2 U2 17 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 064312 DI 10.1063/1.3319555 PG 6 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800092 ER PT J AU Varlioglu, M Ustundag, E Tamura, N Jones, JL AF Varlioglu, Mesut Ustundag, Ersan Tamura, Nobumichi Jones, Jacob L. TI Evolution of ferroelectric domain structures embedded inside polycrystalline BaTiO(3) during heating SO JOURNAL OF APPLIED PHYSICS LA English DT Article DE barium compounds; electric domains; ferroelectric ceramics; ferroelectric Curie temperature; X-ray diffraction ID X-RAY MICRODIFFRACTION; BARIUM-TITANATE; TRIAXIAL STRAIN; WHITE-BEAM; CERAMICS; TEXTURE; SURFACE; DIFFRACTION; PHASE AB The evolution of ferroelectric domains inside a single grain of a polycrystalline BaTiO(3) ceramic was investigated under quasistatic heating by using polychromatic scanning x-ray microdiffraction. Four domain orientations were observed, three of which exhibited a classic of similar to 90 degrees ferroelastic relationship. The fourth domain orientation was found to be crystallographically related with one of the other orientations by a rotation of either 180.47 degrees or 0.47 degrees. While heating the polycrystalline BaTiO(3) from room temperature to above the Curie temperature (125 degrees C), all four ferroelectric domain orientations rotated toward a paraelectric cubic orientation which was found to be at an intermediate orientation relative to the four domain orientations. The crystallographic relationships of the domains with respect to paraelectric phase were explained using a domain structure model by Nepochatenko. C1 [Varlioglu, Mesut; Ustundag, Ersan] Iowa State Univ, Ames, IA 50011 USA. [Tamura, Nobumichi] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Jones, Jacob L.] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA. RP Varlioglu, M (reprint author), Iowa State Univ, Ames, IA 50011 USA. EM varlmes@iastate.edu; ustundag@iastate.edu RI Jones, Jacob/A-8361-2008; Ustundag, Ersan/C-1258-2009 OI Ustundag, Ersan/0000-0002-0812-7028 FU U.S. DOE [W-31-109-ENG-38, DE-AC02-05CH11231]; University of California, Berkeley, California; National Science Foundation [DMR-0746902] FX This project is funded by the APS which is supported by the U.S. DOE under Contract No. W-31-109-ENG-38. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory and University of California, Berkeley, California. One of the authors (J. L. J.) acknowledges the support from the National Science Foundation under Award No. DMR-0746902. The authors would like to thank Dr. Ulrich Lienert (APS) for helpful discussions and Seung-Yub Lee (ISU), Guillaume Geandier (ALS), and Sirine Fakra (ALS) for help in the experiments. NR 30 TC 3 Z9 3 U1 3 U2 12 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAR 15 PY 2010 VL 107 IS 6 AR 064101 DI 10.1063/1.3311565 PG 7 WC Physics, Applied SC Physics GA 577GP UT WOS:000276210800073 ER PT J AU Domeier, L Nissen, A Goods, S Whinnery, L McElhanon, J AF Domeier, Linda Nissen, April Goods, Steven Whinnery, LeRoy McElhanon, James TI Thermomechanical Characterization of Thermoset Urethane Shape-Memory Polymer Foams SO JOURNAL OF APPLIED POLYMER SCIENCE LA English DT Article DE macroporous polymers; mechanical properties; polyurethanes; stimuli-sensitive polymers; thermosets ID COMMERCIAL APPLICATIONS; CONSTITUTIVE THEORY; HOLDING CONDITIONS; POLYURETHANE; RECOVERY; BEHAVIOR; DEFORMATIONS; COMPOSITES; NETWORKS; STRESS AB The shape-memory polymer performance of urethane foams compressed under a variety of conditions was characterized. The foams were water-blown thermosets with a closed-cell structure and ranged in density from about 0.25 to 0.75 g/cm(3). Compressive deformations were carried out over a range of strain levels, temperatures, and lateral constraints. Recovery stresses measured between fixed platens were as high as 4 MPa. Recovery strains, measured against loads up to 0.13 MPa, demonstrated the effects of various parameters. The results suggest that compression near the foam glass-transition temperature provided optimal performance. Foams with densities of about 0.5 g/cc and compressed 50% provided a useful balance (time, strain, and load) in the recovery performance. (C) 2009 Wiley Periodicals, Inc.(dagger) J Appl Polym Sci 115: 3217-3229, 2010 C1 [Domeier, Linda; Nissen, April; Goods, Steven; Whinnery, LeRoy; McElhanon, James] Sandia Natl Labs, Livermore, CA 94550 USA. RP Domeier, L (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM ladomei@sandai.gov FU U.S. Department of Energy [DE-AC04-94AL85000] FX Many useful discussions were held with Jonathan Zimmerman (Sandia National Laboratories) and T. D. Nguyen (formerly at Sandia and now at Johns Hopkins University). Technical assistance from Roger Watson and Patrick Keifer is gratefully acknowledged. Sandia is a multiprogram laboratory operated by Sandia Corp., a Lockheed Martin Co., for the U.S. Department of Energy under contract DE-AC04-94AL85000. NR 32 TC 12 Z9 12 U1 3 U2 13 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0021-8995 EI 1097-4628 J9 J APPL POLYM SCI JI J. Appl. Polym. Sci. PD MAR 15 PY 2010 VL 115 IS 6 BP 3217 EP 3229 DI 10.1002/app.31413 PG 13 WC Polymer Science SC Polymer Science GA 549QP UT WOS:000274069000010 ER PT J AU Grimm, F Cort, JR Dahl, C AF Grimm, Frauke Cort, John R. Dahl, Christiane TI DsrR, a Novel IscA-Like Protein Lacking Iron- and Fe-S-Binding Functions, Involved in the Regulation of Sulfur Oxidation in Allochromatium vinosum SO JOURNAL OF BACTERIOLOGY LA English DT Article ID CLUSTER ASSEMBLY PROTEIN; ESCHERICHIA-COLI; CHROMATIUM-VINOSUM; CRYSTAL-STRUCTURE; NMR STRUCTURE; SULFITE REDUCTASE; GENOME SEQUENCE; GENE-EXPRESSION; BIOSYNTHESIS; BACTERIUM AB In the purple sulfur bacterium Allochromatium vinosum, the reverse-acting dissimilatory sulfite reductase (DsrAB) is the key enzyme responsible for the oxidation of intracellular sulfur globules. The genes dsrAB are the first and the gene dsrR is the penultimate of the 15 genes of the dsr operon in A. vinosum. Genes homologous to dsrR occur in a number of other environmentally important sulfur-oxidizing bacteria utilizing Dsr proteins. DsrR exhibits sequence similarities to A-type scaffolds, like IscA, that partake in the maturation of protein-bound iron-sulfur clusters. We used nuclear magnetic resonance (NMR) spectroscopy to solve the solution structure of DsrR and to show that the protein is indeed structurally highly similar to A-type scaffolds. However, DsrR does not retain the Fe-S-or the iron-binding ability of these proteins, which is due to the lack of all three highly conserved cysteine residues of IscA-like scaffolds. Taken together, these findings suggest a common function for DsrR and IscA-like proteins different from direct participation in iron-sulfur cluster maturation. An A. vinosum Delta dsrR deletion strain showed a significantly reduced sulfur oxidation rate that was fully restored upon complementation with dsrR in trans. Immunoblot analyses revealed a reduced level of DsrE and DsrL in the Delta dsrR strain. These proteins are absolutely essential for sulfur oxidation. Transcriptional and translational gene fusion experiments suggested the participation of DsrR in the posttranscriptional control of the dsr operon, similar to the alternative function of cyanobacterial IscA as part of the sense and/or response cascade set into action upon iron limitation. C1 [Grimm, Frauke; Dahl, Christiane] Univ Bonn, Inst Mikrobiol & Biotechnol, D-53115 Bonn, Germany. [Cort, John R.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. [Cort, John R.] Washington State Univ, Richland, WA 99354 USA. RP Dahl, C (reprint author), Univ Bonn, Inst Mikrobiol & Biotechnol, Meckenheimer Allee 168, D-53115 Bonn, Germany. EM ChDahl@uni-bonn.de OI Dahl, Christiane/0000-0001-8288-7546 FU Deutsche Forschungsgemeinschaft (DFG) [Da 351/3-4, Da 351/3-5]; NIH Protein Structure Initiative [P50GM62413-02] FX The NMR spectra were acquired in the Environmental Molecular Sciences Laboratory (a national scientific user facility sponsored by the U. S. Department of Energy Office of Biological and Environmental Research) located at Pacific Northwest National Laboratory. We thank Jacob Bitoun for the guidelines to iron-binding assays, Bernd Masepohl for his helpful tips concerning gene fusion, Fabian Grein for introduction into and upkeep of the anaerobic chamber, and Bettina Franz for insightful discussions.; This work was supported by Deutsche Forschungsgemeinschaft (DFG) grants Da 351/3-4 and Da 351/3-5 to C. D. J. R. C. acknowledges support from the NIH Protein Structure Initiative (grant P50GM62413-02). DsrR is community-selected target OP5 of the Northeast Structural Genomics Consortium. NR 67 TC 6 Z9 7 U1 0 U2 8 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0021-9193 EI 1098-5530 J9 J BACTERIOL JI J. Bacteriol. PD MAR 15 PY 2010 VL 192 IS 6 BP 1652 EP 1661 DI 10.1128/JB.01269-09 PG 10 WC Microbiology SC Microbiology GA 560GW UT WOS:000274891300020 PM 20061482 ER PT J AU Kane, SR Ashby, PD Pruitt, LA AF Kane, Sheryl R. Ashby, Paul D. Pruitt, Lisa A. TI Characterization and tribology of PEG-like coatings on UHMWPE for total hip replacements SO JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A LA English DT Article DE UHMWPE; poly(ethylene glycol); hip replacement; coating; wear ID MOLECULAR-WEIGHT POLYETHYLENE; IMMERSION ION-IMPLANTATION; TOTAL JOINT REPLACEMENTS; NANOMECHANICAL PROPERTIES; CROSS-LINKING; WEAR DEBRIS; MECHANICAL-PROPERTIES; SURFACE; ARTHROPLASTY; COMPONENTS AB A crosslinked hydrogel coating similar to poly(ethylene glycol) (PEG) was covalently bonded to the surface of ultrahigh molecular weight polyethylene (UHMWPE) to improve the lubricity and wear resistance of the UHWMPE for use in total joint replacements. The chemistry, hydrophilicity, and protein adsorption resistance of the coatings were determined, and the wear behavior of the PEG-like coating was examined by two methods: pin-on-disk tribometry to evaluate macroscale behavior, and atomic force microscopy (AFM) to simulate asperity wear. As expected, the coating was found to be highly PEG-like, with similar to 83% ether content by x-ray photoelectron spectroscopy and more hydrophilic and resistant to protein adsorption than uncoated UHMWPE. Pin-on-disk testing showed that the PEG-like coating could survive 3 MPa of contact pressure, comparable to that experienced by total hip replacements. AFM nanoscratching experiments uncovered three damage mechanisms for the coatings: adhesion/microfracture, pure adhesion, and delamination. The latter two mechanisms appear to correlate well with wear patterns induced by pin-on-disk testing and evaluated by attenuated total reflection Fourier transform infrared spectroscopy mapping. Understanding the mechanisms by which the PEG-like coatings wear is critical for improving the behavior of subsequent generations of wear-resistant hydrogel coatings. (C) 2009 Wiley Periodicals, Inc. J Biomed Mater Res 92A: 1500-1509, 2010 C1 [Kane, Sheryl R.; Pruitt, Lisa A.] Univ Calif Berkeley, Joint Grad Grp Bioengn, Berkeley, CA 94720 USA. [Ashby, Paul D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Pruitt, Lisa A.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. RP Pruitt, LA (reprint author), Univ Calif Berkeley, Joint Grad Grp Bioengn, Berkeley, CA 94720 USA. EM lpruitt@me.berkeley.edu FU NSF; American Association of University Women Fellowship FX This work was supported by a NSF Graduate Research Fellowship (SRK) and the American Association of University Women Fellowship (SRK). ATR-FTIR mapping was performed at the Advanced Light Source at Lawrence Berkeley National Laboratory with assistance from Michael Martin and Hans Bechtel. The authors thank Kyriakos Komvopoulos for his advice and the use of his pin-on-disk tribometer. In addition, the authors would like to acknowledge Stephanie Uhlich and Amy Walters for their contributions to the contact angle and protein adsorption experiments, and Stephen Kaplan and 4th State Inc. NR 33 TC 7 Z9 9 U1 5 U2 21 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1549-3296 J9 J BIOMED MATER RES A JI J. Biomed. Mater. Res. Part A PD MAR 15 PY 2010 VL 92A IS 4 BP 1500 EP 1509 DI 10.1002/jbm.a.32484 PG 10 WC Engineering, Biomedical; Materials Science, Biomaterials SC Engineering; Materials Science GA 555UM UT WOS:000274541500029 PM 19425047 ER PT J AU Spindler, KR Welton, AR Lim, ES Duvvuru, S Althaus, IW Imperiale, JE Daoud, AI Chesler, EJ AF Spindler, Katherine R. Welton, Amanda R. Lim, Efrem S. Duvvuru, Suman Althaus, Irene W. Imperiale, Jennifer E. Daoud, Adam I. Chesler, Elissa J. TI The Major Locus for Mouse Adenovirus Susceptibility Maps to Genes of the Hematopoietic Cell Surface-Expressed LY6 Family SO JOURNAL OF IMMUNOLOGY LA English DT Article ID MURINE LYMPHOCYTE ALLOANTIGENS; QUANTITATIVE TRAIT LOCI; RESTING T-CELLS; LY-6 FAMILY; INFLAMMATORY MONOCYTES; SELECTIVE EXPRESSION; CHROMOSOMAL GENE; TYPE-1 INFECTION; INTERFERON-GAMMA; RESISTANCE GENE AB Susceptibility to mouse adenovirus type I is associated with the major quantitative trait locus Msq1.Msq1 was originally mapped to a 13-Mb region of mouse chromosome (Chr) 15 in crosses between SJL/J and BALB/cJ inbred mice. We have now narrowed Msq1 to a 0.75-Mb interval from 74.68 to 75.43 Mb, defined by two anonymous markers, rs8259436 and D15Spn14, using data from 1396 backcross mice. The critical interval includes 14 Ly6 or Ly6-related genes, including Ly6a (encoding Sca-1/TAP), Ly6e (Sca-2/Tsa1), Ly6g (Gr-1), and gpihbp1 (GPI-anchored high-density lipoprotein-binding protein 1), as well as the gene encoding an aldosterone synthase (Cyp11b2). The Ly6 family members are attractive candidates for virus susceptibility genes because their products are GPI-anchored membrane proteins expressed on lymphoid and myeloid cells, with proposed functions in cell adhesion and cell signaling. To determine interstrain variation in susceptibility and produce additional resources for cloning Msq1, we assayed the susceptibility phenotype of four previously untested inbred mouse strains. Susceptibility of strain 129S6/SvEvTac was subsequently localized to the Ly6 complex region, using polymorphic genetic markers on Chr 15 in a population of 271 (129S6/SvEvTac x BALB/cJ)F(1) x BALB/cJ backcross mice. We identified a major 129S6/SvEvTac susceptibility allele, Msq1(129S6), on Chr 15 in the same region as Msq1(SJL). The results indicate that a major host factor in mouse adenovirus type 1 susceptibility is likely to be a member of the Ly6 gene family. The Journal of Immunology, 2010, 184: 3055-3062. C1 [Spindler, Katherine R.] Univ Michigan, Sch Med, Dept Microbiol & Immunol, Ann Arbor, MI 48109 USA. [Duvvuru, Suman] Univ Tennessee, Oak Ridge Natl Lab, Genome Sci & Technol Program, Oak Ridge, TN 37831 USA. [Chesler, Elissa J.] Univ Tennessee, Oak Ridge Natl Lab, Syst Genet Grp, Biosci Div, Oak Ridge, TN 37831 USA. [Chesler, Elissa J.] Jackson Lab, Bar Harbor, ME 04609 USA. RP Spindler, KR (reprint author), Univ Michigan, Sch Med, Dept Microbiol & Immunol, 1150 W Med Ctr Dr,SPC 5620,6723 Med Sci Bldg 2, Ann Arbor, MI 48109 USA. EM krspin@umich.edu FU National Institutes of Health [A1068645] FX This work was supported by National Institutes of Health Grant A1068645 (to K.R.S.). NR 71 TC 11 Z9 11 U1 0 U2 2 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD MAR 15 PY 2010 VL 184 IS 6 BP 3055 EP 3062 DI 10.4049/jimmunol.0903363 PG 8 WC Immunology SC Immunology GA 566QW UT WOS:000275389000034 PM 20164425 ER PT J AU Perdew, JP Tao, JM AF Perdew, John P. Tao, Jianmin TI When does static correlation scale to the high-density limit as exchange does? SO JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM LA English DT Article DE DFT; Exchange and correlation; Adiabatic connection; Static correlation; Uniform density scaling; High-density limit ID GENERALIZED GRADIENT APPROXIMATION; CORRELATION-ENERGY; FUNCTIONALS; EXPANSION; MOLECULES; SOLIDS; ATOMS; HOLE AB In density functional theory, the exchange-correlation energy is usually decomposed as the sum of exchange and correlation contributions. In the absence of static correlation, this decomposition can be made by uniform coordinate scaling to the high-density limit, because the exchange part dominates in this limit. The estimate of static correlation provided by semilocal, global hybrid, and some more-advanced approximate exchange-correlation functionals scales up as exchange does in this limit. Here we argue that a proper estimate of static correlation should scale up in magnitude less strongly than exchange in the high-density limit, except in special circumstances. Such a special circumstance can occur when there is an exact degeneracy at the non-interacting Fermi level, or when another limit is taken first, in which a degeneracy develops between occupied and unoccupied Kohn-Sham orbital energies. Examples of the latter case are the H(2) molecule as the bond length is stretched to infinity, and the four-electron atomic ion as the nuclear charge tends to infinity. Published by Elsevier B.V. C1 [Tao, Jianmin] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. [Tao, Jianmin] Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USA. [Perdew, John P.] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA. [Perdew, John P.] Tulane Univ, Quantum Theory Grp, New Orleans, LA 70118 USA. RP Tao, JM (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. EM jtao@lanl.gov FU NSF [DMR-0501588, DMR-0854769]; DOE [DE-AC52-06NA25396] FX We thank Emil Proynov for valuable suggestions and comments, and Gustavo E. Scuseria and Viktor Staroverov for useful discussion. This work was supported by NSF under Grant Nos. DMR-0501588 and DMR-0854769 (J.P.P.) and by DOE under Grant No. DE-AC52-06NA25396 (J.T.) NR 28 TC 7 Z9 7 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-1280 J9 J MOL STRUC-THEOCHEM JI Theochem-J. Mol. Struct. PD MAR 15 PY 2010 VL 943 IS 1-3 SI SI BP 19 EP 22 DI 10.1016/j.theochem.2009.09.006 PG 4 WC Chemistry, Physical SC Chemistry GA 569HQ UT WOS:000275587600003 ER PT J AU Kendrick, BK AF Kendrick, Brian K. TI An iterative finite difference method for solving the quantum hydrodynamic equations of motion SO JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM LA English DT Article DE Quantum hydrodynamics; Quantum trajectories; Wave packets; Quantum dynamics; Finite difference ID WAVE-PACKET DYNAMICS; WAVEPACKET DYNAMICS; REACTIVE SCATTERING; TRAJECTORIES; GRIDS; EQUIDISTRIBUTION; BARRIER; STATES AB A new stable computational method is presented for the direct numerical solution of the quantum hydrodynamic equations of motion associated with the de Broglie-Bohm formulation of quantum mechanics. The methodology is based on an iterative solution of the coupled non-linear hydrodynamic equations using a finite difference approximation for evaluating the numerical derivatives. The method is 2nd-order accurate in both space and time and exhibits exponential convergence with respect to the iteration count. The method is applied to a one-dimensional Gaussian wave packet: freely moving and scattering from an Eckart barrier. Excellent agreement is obtained between the numerical and analytic solutions for the free Gaussian wave packet. Accurate transmission probabilities are computed for the Eckart scattering problem which are in excellent agreement with two other computational methods. This method represents the first successful implementation of a stable finite difference approach for directly solving the quantum hydrodynamic equations of motion. (C) 2009 Elsevier B.V. All rights reserved. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Kendrick, BK (reprint author), Los Alamos Natl Lab, Div Theoret, T-1,MS-B268, Los Alamos, NM 87545 USA. EM bkendric@lanl.gov FU US Department of Energy [DE-AC52-06NA25396] FX This work was done under the auspices of the US Department of Energy at Los Alamos National Laboratory. Los Alamos National Laboratory is operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the US Department of Energy under contract DE-AC52-06NA25396. NR 35 TC 6 Z9 6 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-1280 J9 J MOL STRUC-THEOCHEM JI Theochem-J. Mol. Struct. PD MAR 15 PY 2010 VL 943 IS 1-3 SI SI BP 158 EP 167 DI 10.1016/j.theochem.2009.12.004 PG 10 WC Chemistry, Physical SC Chemistry GA 569HQ UT WOS:000275587600023 ER PT J AU Fabian, M Svab, E Proffen, T Veress, E AF Fabian, Margit Svab, Erzsebet Proffen, Thomas Veress, Erzsebet TI Neutron diffraction and reverse Monte Carlo modelling of nu-B2O3 and 75B(2)O(3)-25Na(2)O glasses SO JOURNAL OF NON-CRYSTALLINE SOLIDS LA English DT Article DE Neutron diffraction/scattering; Monte Carlo simulations; Borates; Short-range order ID SODIUM-BORATE GLASSES; VITREOUS BORON-OXIDE; MOLECULAR-DYNAMICS; CRYSTAL STRUCTURE; B2O3; LITHIUM; SCATTERING; SPECTRA; MELTS AB A neutron diffraction study has been performed on newly synthesized nu-B2O3 and 75B(2)O(3)-25Na(2)O glasses. The structure factor has been measured over a broad momentum transfer range, 0.4-30 angstrom(-1), which made fine r-space resolution available for real space analyses. The reverse Monte Carlo (RMC) method was successfully applied to calculate a possible 3-dimensional atomic configuration that is consistent with the measured structure factor. The partial atomic pair-correlation functions, nearest neighbor atomic distances, coordination number distributions, average coordination number values and three-particle bond angle distributions have been revealed. It was established that addition of 25 mol% Na2O to nu-B2O3 transforms 41% of the 3-fold oxygen coordinated boron atoms into 4-fold coordinated ones. The first neighbor B-O distance is at 1.37 angstrom in nu-B2O3, while two well resolved distances are at 1.38 and 1.50 angstrom in the 75B(2)O(3)-25Na(2)O glass. The three-particle < O-B-O > and < B-O-B > bond angle distributions show an extra peak at around 90 degrees in the 75B(2)O(3)-25Na(2)O glass, which may be attributed to the BO4 units, in addition to the peak at 120 degrees characteristic for BO3 trigonal units. The ring size distribution of the nu-B2O3 network indicate that only 12% of boron atoms form boroxol group (B3O6), while the fraction of the larger 7-11 boron membered rings is 52%, and a tail of the distribution extends up to 20-membered rings. (C) 2009 Elsevier B.V. All rights reserved. C1 [Fabian, Margit; Svab, Erzsebet] Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary. [Proffen, Thomas] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. [Veress, Erzsebet] Univ Babes Bolyai, Fac Chem, RO-3400 Cluj Napoca, Romania. RP Fabian, M (reprint author), Res Inst Solid State Phys & Opt, POB 49, H-1525 Budapest, Hungary. EM fabian@szfki.hu RI Fabian, Margit/C-7210-2011; Lujan Center, LANL/G-4896-2012; Proffen, Thomas/B-3585-2009 OI Proffen, Thomas/0000-0002-1408-6031 FU EC [226507-NMI3]; DOE [DE-AC52-06NA25396, DMR 00-76488] FX The authors are indebted to Drs L. Koszegi and Gy. Meszaros for their helpful contribution in this work. This research project has been supported by the EC under the FP7 Grant Agreement N 226507-NMI3. This work has benefited from the use of NPDF at the Lujan Center at Los Alamos Neutron Science Center under DOE Contract DE-AC52-06NA25396 and Grant DMR 00-76488. NR 28 TC 6 Z9 6 U1 0 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3093 J9 J NON-CRYST SOLIDS JI J. Non-Cryst. Solids PD MAR 15 PY 2010 VL 356 IS 9-10 BP 441 EP 446 DI 10.1016/j.jnoncrysol.2009.12.013 PG 6 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA 571QO UT WOS:000275769800002 ER PT J AU Palumbo, O Paolone, A Rispoli, P Cantelli, R Autrey, T AF Palumbo, Oriele Paolone, Annalisa Rispoli, Pasquale Cantelli, Rosario Autrey, Tom TI Decomposition of NH3BH3 at sub-ambient pressures: A combined thermogravimetry-differential thermal analysis-mass spectrometry study SO JOURNAL OF POWER SOURCES LA English DT Article DE TGA; DTA; Mass spectrometry; Hydrogen storage ID AMMONIA BORANE DEHYDROGENATION; CHEMICAL HYDROGEN STORAGE; CATALYZED DEHYDROGENATION; RELEASE; PHASE; AMINOBORANE; TRANSITION; EFFICIENT; DIBORANE; NMR AB We report a systematic study of the isothermal decomposition of ammonia borane, NH3BH3, at 363 K as a function of argon pressure ranging between 50 and 1040 mbar using thermogravimetry and differential thermal analysis Coupled with mass analysis of the volatile species During thermal aging at 363 K, evolution of hydrogen, aminoborane and borazine is monitored, with the relative mass loss strongly depending on the pressure in the react ion chamber. Furthermore, I lie induction period required for hydrogen release at 363 K decreases with decreasing pressure (C) 2009 Elsevier B V. All rights reserved. C1 [Palumbo, Oriele; Paolone, Annalisa; Rispoli, Pasquale; Cantelli, Rosario] Sapienza Univ Roma, Dipartimento Fis, I-00185 Rome, Italy. [Palumbo, Oriele] CNR ISC, Ist Sistemi Complessi, I-00185 Rome, Italy. [Paolone, Annalisa] CNR INFM, Lab Reg SuperMAT, Salerno, Italy. [Cantelli, Rosario] CNR INFM, I-00185 Rome, Italy. [Autrey, Tom] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Palumbo, O (reprint author), Sapienza Univ Roma, Dipartimento Fis, Piazzale A Moro 2, I-00185 Rome, Italy. RI Palumbo, Oriele/B-7694-2015; Paolone, Annalisa/B-7701-2015; OI Paolone, Annalisa/0000-0002-4839-7815; Palumbo, Oriele/0000-0003-4968-1049 FU Ministero dell'Ambiente; U.S. Department of Energy (DOE) FX The present study was Supported by the Italian "Ministero dell'Ambiente". TA wishes to acknowledge Support from the U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy. PNNL is operated by Battelle for the U.S. DOE. NR 25 TC 21 Z9 21 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD MAR 15 PY 2010 VL 195 IS 6 SI SI BP 1615 EP 1618 DI 10.1016/j.jpowsour.2009.09.042 PG 4 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 530HU UT WOS:000272580900013 ER PT J AU Zhang, JG Liu, J Wang, DH Choi, D Fifield, LS Wang, CM Xia, G Nie, ZM Yang, ZG Pederson, LR Graff, G AF Zhang, Ji-Guang Liu, Jun Wang, Donghai Choi, Daiwon Fifield, Leonard S. Wang, Chongmin Xia, Gordon Nie, Zimin Yang, Zhenguo Pederson, Larry R. Graff, Gordon TI Vapor-induced solid-liquid-solid process for silicon-based nanowire growth SO JOURNAL OF POWER SOURCES LA English DT Article DE Lithium ion batteries; Silicon; Nanowire; Energy storage; SiC; PHEV ID LITHIUM ION BATTERIES; ANODES AB Silicon-based nanowires have been grown from commercial silicon powders Under conditions with different oxygen and carbon activities. Nanowires grown in the presence of carbon sources consisted of a crystalline SiC core with an amorphous SiO(x) shell. The thickness of the SiO(x) shell decreased as the oxygen concentration in the precursor gases decreased. Nanowires grown in a carbon-free environment consisted of amorphous silicon oxide with a typical composition of SiO(1 8). The growth rate of nanowires decreased with decreasing oxygen content in the precursor gases. SiO(1 8) nanowires exhibited an Initial discharge capacity of similar to 1300 mAhg(-1) and better stability than those of silicon powders A vapor-induced solid-liquid-solid (VI-SI-S) mechanism is proposed to explain the nanowire growth (Including silicon and other metal-based nanowires) from powder Sources In this approach, both a gas source and a solid-powder source are required for nanowire growth This mechanism is consistent with experimental observations and also can be used to guide the design and growth of other nanowires Published by Elsevier B V C1 [Zhang, Ji-Guang; Liu, Jun; Wang, Donghai; Choi, Daiwon; Fifield, Leonard S.; Wang, Chongmin; Xia, Gordon; Nie, Zimin; Yang, Zhenguo; Graff, Gordon] Pacific NW Natl Lab, Richland, WA 99354 USA. [Pederson, Larry R.] N Dakota State Univ, Fargo, ND 58102 USA. RP Zhang, JG (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA. RI Fifield, Leonard/E-9773-2010; Choi, Daiwon/B-6593-2008; Wang, Donghai/L-1150-2013 OI Fifield, Leonard/0000-0002-7432-5356; Wang, Donghai/0000-0001-7261-8510 FU Pacific Northwest National Laboratory; Department of Energy FX The authors thank Laxmikant V. Saraf and James E. Coleman for their help with the SEM analysis. This work is supported by the Laboratory Directed Research and Development (LDRD) Program of Pacific Northwest National Laboratory and by the Department of Energy through the Office of Vehicle Technology. Part of the research was performed in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by DOE's Office of Biological and Environmental Research and located at PNNL. NR 11 TC 13 Z9 13 U1 3 U2 37 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD MAR 15 PY 2010 VL 195 IS 6 BP 1691 EP 1697 DI 10.1016/j.jpowsour.2009.09.068 PG 7 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 530HU UT WOS:000272580900023 ER PT J AU Yang, L Furczon, MM Xiao, A Lucht, BL Zhang, Z Abraham, DP AF Yang, L. Furczon, M. M. Xiao, A. Lucht, B. L. Zhang, Z. Abraham, D. P. TI Effect of impurities and moisture on lithium bisoxalatoborate (LiBOB) electrolyte performance in lithium-ion cells SO JOURNAL OF POWER SOURCES LA English DT Article DE LiB(C2O4)(2); Reference electrode; NMR; FTIR ID GRAPHITE; BATTERIES; LIPF6 AB Electrolytes containing LiB(C2O4)(2) (LiBOB) sal is are of increasing interest for lithium-ion cells for several reasons that include their ability to form a stable solid electrolyte interphase on graphite electrodes. However, cells containing these electrolytes often show inconsistent performance because of impurities in the LiBOB salt. In this work we compare cycling and impedance data from cells containing electrolytes with LiBOB that was obtained commercially and LiBOB purified by a rigorous recrystallization procedure. We relate the difference in performance to a lithium oxalate impurity that may be a residual from the salt manufacturing process. We also examine the reaction of LiBOB with water to determine the effect of salt storage in high-humidity environments. Although LiBOB electrolytes containing trace amounts (similar to 100 ppm) Of Moisture appear relatively stable, higher moisture contents (similar to 1 wt%) lead to observable salt decomposition resulting in the generation of B(C2O4)(OH) and LiB(C2O4)(OH)(2) compounds that do not dissolve in typical carbonate solutions and impair lithium-ion cell performance. (C) 2009 Elsevier B V. All rights reserved. C1 [Furczon, M. M.; Zhang, Z.; Abraham, D. P.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. [Yang, L.; Xiao, A.; Lucht, B. L.] Univ Rhode Isl, Dept Chem, Kingston, RI 02881 USA. RP Abraham, DP (reprint author), Argonne Natl Lab, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM abraham@anl.gov FU U.S. Department of Energy (DOE) [DE-AC02-06CH11357] FX This work was supported by the U.S. Department of Energy (DOE), Office of Vehicle Technologies. We are grateful for the support of Dave Howell at DOE, and Gary Henriksen, Dennis Dees and Andrew Jansen at Argonne. This manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. NR 21 TC 29 Z9 32 U1 2 U2 34 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-7753 EI 1873-2755 J9 J POWER SOURCES JI J. Power Sources PD MAR 15 PY 2010 VL 195 IS 6 SI SI BP 1698 EP 1705 DI 10.1016/j.jpowsour.2009.09.056 PG 8 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA 530HU UT WOS:000272580900024 ER PT J AU Ding, ZF Yanag, DL Currier, RP Obrey, SJ Zhao, YS AF Ding, Zhongfen Yanag, Dali Currier, Robert P. Obrey, Stephen J. Zhao, Yusheng TI Polyaniline Morphology and Detectable Intermediate Aggregates SO MACROMOLECULAR CHEMISTRY AND PHYSICS LA English DT Article DE acid concentration; morphology control; nanofibers vs. nanotubes; polyaniline detectable reaction intermediates; UV-Vis spectroscopy ID CONDUCTING POLYMER NANOSTRUCTURES; OXIDATIVE POLYMERIZATION; CHEMICAL POLYMERIZATION; MOLECULAR-WEIGHT; GAS SENSORS; ANILINE; NANOTUBES; NANOFIBERS; SPECTROSCOPY; MECHANISM AB Formation of detectable intermediate aggregates is found to affect the morphologies of PANI nanomaterials, leading to either tubular or rod structures with striated growth and rough surfaces. By simply varying the ratio of initial proton and aniline concentration, a wide range of product morphologies can be synthesized. The intermediates form visible aggregates that can be separated by centrifugation or filtration. In addition to UV-Vis monitoring of the intermediate aggregates, OCP and pH measurements are used to monitor the reaction process. GPC measurements show that the corresponding final products formed typically are not homogeneous. The correlation of intermediates formation and aggregation with product morphology suggests a route to controlled synthesis of PANI nanomaterials. C1 [Ding, Zhongfen] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA. [Yanag, Dali] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA. [Currier, Robert P.; Obrey, Stephen J.] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. [Zhao, Yusheng] Los Alamos Natl Lab, Los Alamos Neutron Scattering Ctr, Los Alamos, NM 87545 USA. RP Ding, ZF (reprint author), Los Alamos Natl Lab, Mat Phys & Applicat Div, MS D429, Los Alamos, NM 87545 USA. EM zding@lanl.gov; dyang@lanl.gov RI Lujan Center, LANL/G-4896-2012 FU Los Alamos National Laboratory FX We would like to thank Dr. Ross E. Muenchausen (LANL MST-8) for UV-Vis access and Dr. Rob Dickerson and Dr. Rod McCabe (LANL MST-6) for SEM and TEM access and Dr. Debra Wrobleski for GPC access. We also would like to thank Prof. Richard B. Kaner (UCLA) and Dr. Hsing-Lin Wang (LANL) for thoughtful discussions. This work was supported by the Laboratory Directed Research and Development Program at Los Alamos National Laboratory. NR 73 TC 15 Z9 17 U1 1 U2 14 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1022-1352 J9 MACROMOL CHEM PHYS JI Macromol. Chem. Phys. PD MAR 15 PY 2010 VL 211 IS 6 BP 627 EP 634 DI 10.1002/macp.200900444 PG 8 WC Polymer Science SC Polymer Science GA 580GP UT WOS:000276436300003 ER PT J AU Muransky, O Barnett, MR Luzin, V Vogel, S AF Muransky, O. Barnett, M. R. Luzin, V. Vogel, S. TI On the correlation between deformation twinning and Luders-like deformation in an extruded Mg alloy: In situ neutron diffraction and EPSC.4 modelling SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE Magnesium; Twinning; Luders-like deformation; Neutron diffraction; EPSC modelling ID MAGNESIUM ALLOY; GRAIN-SIZE; MECHANICAL-BEHAVIOR; STRAIN-RATE; ZN ALLOY; TEXTURE; POLYCRYSTALS; TEMPERATURE; SLIP; AZ31 AB The current work focuses on the yielding and immediate post-yielding deformation of fine-grained and coarse-grained ZM20 Mg alloys obtained by extrusion. Compressive deformations along the extrusion direction, known to be governed by profuse twinning are examined in detail. It is shown that the fine-grained alloy exhibits Luders-like plateaux suggesting heterogeneous transition from elastic to plastic deformation. This is due to the cooperative twinning of neighbouring grains which is promoted in the fine-grained alloy by the high internal stresses borne by the parent grain families in the vicinity of yielding, and the auto-catalytic nature of twin nucleation. The elasto-plastic response of tested alloys was also simulated using version 4 of the Elasto-Plastic Self-Consistent (EPSC) model. The finite initial fraction (FIF) assumption is employed to account for the stress relaxation related to the twin nucleation process. It is shown that the new EPSC.4 model is superior to its previous version as it enables realistic predictions of the development of elastic lattice strains in variously oriented grain families and the macroscopic stress-strain response of a polycrystalline aggregate undergoing profuse twinning. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved. C1 [Muransky, O.] ANSTO, Inst Mat Engn, Menai, NSW 2234, Australia. [Barnett, M. R.] Deakin Univ, Sch Engn, Geelong, Vic 3217, Australia. [Luzin, V.] ANSTO, Bragg Inst, Menai, NSW 2234, Australia. [Vogel, S.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Muransky, O (reprint author), ANSTO, Inst Mat Engn, PMB 1, Menai, NSW 2234, Australia. EM ondrej.muransky@ansto.gov.au RI Lujan Center, LANL/G-4896-2012; OI Vogel, Sven C./0000-0003-2049-0361 FU ISIS Facility, STFC Rutherford Appleton Laboratory, UK [RB910487]; LANSCE-LC, Los Alamos National Laboratory, USA [235145] FX The authors would like to gratefully acknowledge the support from the ISIS Facility, STFC Rutherford Appleton Laboratory, UK (Proposal No. RB910487) and LANSCE-LC, Los Alamos National Laboratory, USA (Proposal No. 235145). The authors thank to D.G. Carr from ANSTO, Australia and E.C. Oliver from ISIS Facility, UK for their help with the neutron diffraction experiments. O. Muransky further wishes to thank Dr. P. Sittner from Institute of Phycis, Czech Republic for helpful discussion, as well as Dr. B. Clausen and Dr. C.N. Tome from Los Alamos National Laboratory, USA for providing their current EPSC.4 (version 4) model as well as their help and discussion during the modelling work. The help of M. Saleh from ANSTO, Australia in reading and commenting on the manuscript is also very gratefully acknowledged. NR 42 TC 39 Z9 39 U1 0 U2 25 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD MAR 15 PY 2010 VL 527 IS 6 BP 1383 EP 1394 DI 10.1016/j.msea.2009.10.018 PG 12 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA 571TO UT WOS:000275778900011 ER PT J AU Fu, EG Carter, J Martin, M Xie, GQ Zhang, X Wang, YQ Littleton, R McDeavitt, S Shao, L AF Fu, E. G. Carter, Jesse Martin, Michael Xie, Guoqiang Zhang, X. Wang, Y. Q. Littleton, Rick McDeavitt, Sean Shao, Lin TI Ar-ion-milling-induced structural changes of Cu50Zr45Ti5 metallic glass SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE Metallic glass; Irradiation effect; Ion milling; Nanocrystal ID ELECTRON-IRRADIATION; AMORPHOUS-ALLOYS; CRYSTALLIZATION; NANOCRYSTALLIZATION; TEMPERATURE AB We have systematically studied Ar-ion-milling-induced microstructural evolution in Cu50Zr45Ti5 metallic glass (MG) during specimen preparation for transmission electron microscopy (TEM). We have observed the formation of a Cu10Zr7 intermetallic phase in samples prepared using low energy ion milling (2 key) but without evident crystallization. We also observed the formation of nanocrystalline Cu10Zr7 phase (with a possibility of being mixed with other minor phases) in samples prepared using high energy ion milling (>= 3 key). In contrast, the MG samples remained in the glassy state without any microstructural changes when prepared by either electropolishing or low energy ion milling with liquid nitrogen cooling (2 key). Further, our study suggests that chemical decomposition might be a necessary intermediate stage for crystallization. In situ TEM electron irradiation shows ion-milling-induced phase segregation and preferred nanocrystallization in the precipitated regions. (C) 2009 Elsevier B.V. All rights reserved. C1 [Carter, Jesse; Martin, Michael; McDeavitt, Sean; Shao, Lin] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA. [Fu, E. G.; Zhang, X.] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA. [Xie, Guoqiang] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan. [Wang, Y. Q.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Littleton, Rick] Texas A&M Univ, Microscopy & Imaging Ctr, College Stn, TX 77843 USA. RP Shao, L (reprint author), Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA. EM lshao@mailaps.org RI Xie, Guoqiang/A-8619-2011; Zhang, Xinghang/H-6764-2013 OI Zhang, Xinghang/0000-0002-8380-8667 FU Siemens Power Generation Emerging Technologies; NRC; DOE Center for Integrated Nanotechnologies at Los Alamos National Laboratory; NSF [0846835]; DOE [DE-FC07-05ID14657] FX This work was financially supported by the University Embryonic Technologies Program from Siemens Power Generation Emerging Technologies. L. Shao would like to acknowledge the support from the NRC Early Career Development Grant and DOE Center for Integrated Nanotechnologies at Los Alamos National Laboratory, and NSF Career Award under grant number 0846835. X. Zhang acknowledges the support by DOE under grant number DE-FC07-05ID14657. NR 24 TC 11 Z9 11 U1 2 U2 21 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAR 15 PY 2010 VL 268 IS 6 BP 545 EP 549 DI 10.1016/j.nimb.2009.12.007 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 575GA UT WOS:000276053700001 ER PT J AU Usov, IO Arendt, PN Sickafus, KE AF Usov, I. O. Arendt, P. N. Sickafus, K. E. TI Relationship between radiation damage anisotropy in MgO and YSZ single crystals and the Ion/Atom ratio deposition parameter in biaxially-textured MgO and YSZ thin films fabricated by ion beam assisted deposition SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE Magnesia; Yttria-stabilized zirconia; Irradiation damage; Ion beam assisted deposition ID YTTRIA-STABILIZED-ZIRCONIA; COATED CONDUCTORS; CUBIC ZIRCONIA; ORIENTATION; IMPLANTATION; MECHANISM; GROWTH; BOMBARDMENT; ALIGNMENT; PROFILES AB To elucidate the underlying physics of ion beam assisted deposition (IBAD), irradiation damage effects in magnesia (MgO) and yttria-stabilized zirconia (YSZ) were investigated. Ion irradiations were performed on MgO and YSZ single crystals of three low-index crystallographic orientations using 100 and 150 key Ar(+) ions over a fluence range from 1 x 10(14) to 5 x 10(16) Ar/cm(2). Damage accumulation was analyzed using Rutherford backscattering spectrometry combined with ion channeling. Damage evolution with increasing ion fluence proceeded via several characteristic stages and the total damage exhibited a strong dependence on crystallographic orientation. For both MgO and YSZ, damage anisotropy was maximal at a stage when the damage saturated, with the (1 1 0) crystallographic orientation being the most radiation damage resistant. The Ion/Atom ratio deposition parameter reported for IBAD of MgO and YSZ films was found to correlate with the damage plateau stage described above. Finally, the role of the Ion/Atom ratio is discussed in terms of radiation damage anisotropy mechanism. (C) 2010 Elsevier B.V. All rights reserved. C1 [Usov, I. O.; Arendt, P. N.; Sickafus, K. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Usov, IO (reprint author), Los Alamos Natl Lab, Mailstop K763, Los Alamos, NM 87544 USA. EM iusov@lanl.gov FU US Department of Energy Office of Basic Energy Sciences, Division of Materials Sciences and Engineering FX This work was supported by the US Department of Energy Office of Basic Energy Sciences, Division of Materials Sciences and Engineering and US Department of Energy's High Temperature Superconductivity (HTS) Program. NR 36 TC 12 Z9 12 U1 0 U2 9 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAR 15 PY 2010 VL 268 IS 6 BP 622 EP 626 DI 10.1016/j.nimb.2009.12.018 PG 5 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 575GA UT WOS:000276053700013 ER PT J AU Insepov, Z Norem, J Veitzer, S AF Insepov, Z. Norem, J. Veitzer, S. TI Atomistic self-sputtering mechanisms of rf breakdown in high-gradient linacs SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article DE Molecular dynamics; Sputtering; Solid; Liquid surfaces; Taylor cone; Coulomb explosion ID MOLECULAR-DYNAMICS SIMULATION; TRANSITION-METALS; ENERGY-DEPENDENCE; ION; BOMBARDMENT; PSEUDOSPARK; DEPOSITION; SURFACES; SOLIDS; YIELDS AB Molecular dynamics (MD) models of sputtering solid and liquid surfaces - including the surfaces charged by interaction with plasma, Coulomb explosion, and Taylor cone formation - were developed. MD simulations of self-sputtering of a crystalline (1 0 0) copper surface by Cu(+) ions in a wide range of ion energies (50 eV-50 key) were performed. In order to accommodate energetic ion impacts on a target, a computational model was developed that utilizes MD to simulate rapid atomic collisions in the central impact zone, and a finite-difference method to absorb the energy and shock wave for the collisional processes occurring at a longer time scales. The sputtering yield increases if the surface temperature rises and the surface melts as a result of heat from plasma. Electrostatic charging of the surface under bombardment with plasma ions is another mechanism that can dramatically increase the sputtering yield because it reduces the surface binding energy and the surface tension. An MD model of Taylor cone formation at a sharp tip placed in a high electric field was developed, and the model was used to simulate Taylor cone formation for the first time. Good agreement was obtained between the calculated Taylor cone angle (104.3 degrees) and the experimental one (98.6 degrees). A Coulomb explosion (CE) was proposed as the main surface failure mechanism triggering breakdown, and the dynamics of CE was studied by MD. (C) 2009 Elsevier B.V. All rights reserved. C1 [Insepov, Z.; Norem, J.] Argonne Natl Lab, Argonne, IL 60439 USA. [Veitzer, S.] Tech X, Boulder, CO 80303 USA. RP Insepov, Z (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM insepov@anl.gov RI Insepov, Zinetula/L-2095-2013 OI Insepov, Zinetula/0000-0002-8079-6293 FU US Dept. of Energy [DE-AC01-06CH11357]; SBIR FX This work was supported in part by the US Dept. of Energy under Contract DE-AC01-06CH11357 and in part by SBIR with Tech-X Corp. NR 30 TC 10 Z9 10 U1 0 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD MAR 15 PY 2010 VL 268 IS 6 BP 642 EP 650 DI 10.1016/j.nimb.2009.12.016 PG 9 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 575GA UT WOS:000276053700017 ER PT J AU Li, ZF Caglayan, H Colak, E Zhou, JF Soukoulis, CM Ozbay, E AF Li, Zhaofeng Caglayan, Humeyra Colak, Evrim Zhou, Jiangfeng Soukoulis, Costas M. Ozbay, Ekmel TI Coupling effect between two adjacent chiral structure layers SO OPTICS EXPRESS LA English DT Article ID NEGATIVE-INDEX METAMATERIALS; REFRACTION AB A pair of mutually twisted metallic cross-wires can produce giant optical activity. When this single chiral layer is stacked layer by layer in order to build a thick chiral metamaterial, strong coupling effects are found between the two adjacent chiral layers. We studied these coupling effects numerically and experimentally. The results show that the existing coupling between chiral layers can make the chiral properties of a two-layered chiral metamaterial different from the constituting single chiral layers. It is explained qualitatively that the coupling effects are generated from the coupling of metallic cross-wires belonging to different chiral layers. Our experimental results are in good agreement with the simulation results. (C) 2010 Optical Society of America C1 [Li, Zhaofeng; Ozbay, Ekmel] Bilkent Univ, Nanotechnol Res Ctr, Dept Phys, TR-06800 Ankara, Turkey. [Ozbay, Ekmel] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey. [Zhou, Jiangfeng; Soukoulis, Costas M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. [Zhou, Jiangfeng; Soukoulis, Costas M.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Soukoulis, Costas M.] Fdn Res & Technol Hellas, Inst Elect Struct & Laser, Iraklion 71110, Greece. [Soukoulis, Costas M.] Univ Crete, Dept Mat Sci & Technol, Iraklion 71110, Greece. RP Li, ZF (reprint author), Bilkent Univ, Nanotechnol Res Ctr, Dept Phys, TR-06800 Ankara, Turkey. EM zhaofengli@bilkent.edu.tr RI Caglayan, Humeyra/G-5786-2012; Soukoulis, Costas/A-5295-2008; Zhou, Jiangfeng/D-4292-2009; Colak, Evrim/K-5405-2015 OI Zhou, Jiangfeng/0000-0002-6958-3342; Colak, Evrim/0000-0002-4961-5060 FU European Union; TUBITAK [107A004, 107A012]; Turkish Academy of Sciences FX This work is supported by the European Union under the projects EU-PHOME, and EUECONAM, and TUBITAK under Project Nos., 107A004, and 107A012. One of the authors (E. O.) also acknowledges partial support from the Turkish Academy of Sciences. NR 32 TC 36 Z9 37 U1 3 U2 26 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1094-4087 J9 OPT EXPRESS JI Opt. Express PD MAR 15 PY 2010 VL 18 IS 6 BP 5375 EP 5383 DI 10.1364/OE.18.005375 PG 9 WC Optics SC Optics GA 574PE UT WOS:000276002500003 PM 20389552 ER PT J AU Kirian, RA Wang, XY Weierstall, U Schmidt, KE Spence, JCH Hunter, M Fromme, P White, T Chapman, HN Holton, J AF Kirian, Richard A. Wang, Xiaoyu Weierstall, Uwe Schmidt, Kevin E. Spence, John C. H. Hunter, Mark Fromme, Petra White, Thomas Chapman, Henry N. Holton, James TI Femtosecond protein nanocrystallography-data analysis methods SO OPTICS EXPRESS LA English DT Article ID X-RAY-SCATTERING; ANGSTROM RESOLUTION; RADIATION-DAMAGE; PHOTOSYSTEM-I; CRYSTALS; DIFFRACTION; CRYSTALLOGRAPHY; WATER AB X-ray diffraction patterns may be obtained from individual submicron protein nanocrystals using a femtosecond pulse from a free-electron X-ray laser. Many "single-shot" patterns are read out every second from a stream of nanocrystals lying in random orientations. The short pulse terminates before significant atomic (or electronic) motion commences, minimizing radiation damage. Simulated patterns for Photosystem I nanocrystals are used to develop a method for recovering structure factors from tens of thousands of snapshot patterns from nanocrystals varying in size, shape and orientation. We determine the number of shots needed for a required accuracy in structure factor measurement and resolution, and investigate the convergence of our Monte-Carlo integration method. (C) 2010 Optical Society of America C1 [Kirian, Richard A.; Wang, Xiaoyu; Weierstall, Uwe; Schmidt, Kevin E.; Spence, John C. H.] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA. [Hunter, Mark; Fromme, Petra] Arizona State Univ, Dept Biochem, Tempe, AZ 85287 USA. [White, Thomas; Chapman, Henry N.] Univ Hamburg, DESY, Ctr Free Electron Laser Sci, D-22607 Hamburg, Germany. [Chapman, Henry N.] Univ Hamburg, D-22761 Hamburg, Germany. [Holton, James] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Holton, James] Univ Calif San Francisco, Dept Biochem & Biophys, San Francisco, CA 94158 USA. RP Kirian, RA (reprint author), Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA. EM spence@asu.edu RI Chapman, Henry/G-2153-2010; Weierstall, Uwe/B-3568-2011; Kirian, Richard/M-3750-2013; OI Chapman, Henry/0000-0002-4655-1743; Kirian, Richard/0000-0001-7197-3086 FU Department of Energy (DOE) [DE-SC0002141]; National Science Foundation (NSF) [MCB 0919195, 0417142] FX Supported by Department of Energy (DOE) award DE-SC0002141, National Science Foundation (NSF) awards MCB 0919195 and 0417142. We are grateful to Drs. R. Doak, A. Barty, I. Schlichting, S. Marchesini, and F. Maia for useful discussions. NR 30 TC 107 Z9 109 U1 4 U2 32 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1094-4087 J9 OPT EXPRESS JI Opt. Express PD MAR 15 PY 2010 VL 18 IS 6 BP 5713 EP 5723 DI 10.1364/OE.18.005713 PG 11 WC Optics SC Optics GA 574PE UT WOS:000276002500038 PM 20389587 ER PT J AU Zhang, S Park, YS Liu, YM Zentgraf, T Zhang, X AF Zhang, Shuang Park, Yong-Shik Liu, Yongmin Zentgraf, Thomas Zhang, Xiang TI Far-field measurement of ultra-small plasmonic mode volume SO OPTICS EXPRESS LA English DT Article ID OPTICAL ANTENNAS; METAMATERIALS; ENHANCEMENT; CAPACITANCE; RESONATORS AB Light-matter interaction can be greatly enhanced in nano-scale plasmonic cavities with tightly confined optical mode, where the mode volume determines the interaction strength. The experimental determination of the mode volume of plasmonic elements is therefore of fundamental importance. Mapping the electric field distribution using near-field scanning optical microscopy (NSOM) may disturb the field distribution hence prevent a reliable measurement of the mode volume. Here, we develop a non-pertubative technique to experimentally determine the mode volume of plasmonic resonators in the far field through a unique optical force method. (C) 2010 Optical Society of America C1 [Zhang, Shuang; Park, Yong-Shik; Liu, Yongmin; Zentgraf, Thomas; Zhang, Xiang] Univ Calif Berkeley, Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA. [Zhang, Xiang] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Zhang, S (reprint author), Univ Calif Berkeley, Nanoscale Sci & Engn Ctr, 3112 Etcheverry Hall, Berkeley, CA 94720 USA. EM xiang@berekeley.edu RI Liu, Yongmin/F-5322-2010; Zhang, Xiang/F-6905-2011; zhang, shuang/G-5224-2011; Zentgraf, Thomas/G-8848-2013 OI Zentgraf, Thomas/0000-0002-8662-1101 FU U.S. Army Research Office (ARO) MURI [50432PH-MUR] FX This work was supported by the U.S. Army Research Office (ARO) MURI program 50432PH-MUR. NR 23 TC 7 Z9 7 U1 0 U2 13 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 1094-4087 J9 OPT EXPRESS JI Opt. Express PD MAR 15 PY 2010 VL 18 IS 6 BP 6048 EP 6055 DI 10.1364/OE.18.006048 PG 8 WC Optics SC Optics GA 574PE UT WOS:000276002500075 PM 20389625 ER PT J AU Albuquerque, IFM de los Heros, CP AF Albuquerque, Ivone F. M. de los Heros, Carlos Perez TI Closing the window on strongly interacting dark matter with IceCube SO PHYSICAL REVIEW D LA English DT Article ID MASSIVE PARTICLES; LIMITS; CAPTURE AB We use the recent results on dark matter searches of the 22-string IceCube detector to probe the remaining allowed window for strongly interacting dark matter in the mass range 10(4) < m(X) < 10(15) GeV. We calculate the expected signal in the 22-string IceCube detector from the annihilation of such particles captured in the Sun and compare it to the detected background. As a result, the remaining allowed region in the mass versus cross section parameter space is ruled out. We also show the expected sensitivity of the complete IceCube detector with 86 strings. C1 [Albuquerque, Ivone F. M.] Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, Batavia, IL 60510 USA. [Albuquerque, Ivone F. M.] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil. [de los Heros, Carlos Perez] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden. RP Albuquerque, IFM (reprint author), Fermilab Natl Accelerator Lab, Ctr Particle Astrophys, POB 500, Batavia, IL 60510 USA. RI Albuquerque, Ivone/H-4645-2012; OI Albuquerque, Ivone/0000-0001-7328-0136; Perez de los Heros, Carlos/0000-0002-2084-5866 FU U. S. Department of Energy [DE-AC02-07CH11359]; Brazilian National Counsel for Scientific Research (CNPq) FX We thank T. Sjostrand for his kind help with PYTHIA. I. A. was partially funded by the U. S. Department of Energy under Contract No. DE-AC02-07CH11359 and the Brazilian National Counsel for Scientific Research (CNPq). NR 22 TC 7 Z9 7 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD MAR 15 PY 2010 VL 81 IS 6 AR 063510 DI 10.1103/PhysRevD.81.063510 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 577BL UT WOS:000276195700027 ER PT J AU Bai, Y Carena, M Ponton, E AF Bai, Yang Carena, Marcela Ponton, Eduardo TI Planck scale from top condensation SO PHYSICAL REVIEW D LA English DT Article ID ELECTROWEAK SYMMETRY-BREAKING; STANDARD MODEL; HIGGS-BOSON; DYNAMICAL MODEL; BULK FIELDS; QUARK MASS; SUPERCONDUCTIVITY; PHENOMENOLOGY; STABILIZATION; DIMENSIONS AB We propose a scenario in which the Planck scale is dynamically linked to the electroweak scale induced by top condensation. The standard model field content, without the Higgs, is promoted to a 5D warped background. There is also an additional 5D fermion with the quantum numbers of the right-handed top. Localization of the zero-modes leads, at low-energies, to a Nambu-Jona-Lasinio model that also stabilizes the radion field dynamically thus explaining the hierarchy between the Planck scale and v(EW) = 174 GeV. The top mass arises dynamically from the electroweak breaking condensate. The other standard model fermion masses arise naturally from higher-dimension operators, and the fermion mass hierarchies and flavor structure can be explained from the localization of the zero-modes in the extra dimension. If other contributions to the radion potential except those directly related to electroweak symmetry breaking are engineered to be suppressed, the KK scale is predicted to be about 2 orders of magnitude above the electroweak scale, rendering the model easily consistent with electroweak precision data. The model predicts a heavy (composite) Higgs with a mass of about 500 GeV and standard-model-like properties, and a vectorlike quark with non-negligible mixing with the top quark and mass in the 1.6-2.9 TeV range. Both can be within the reach of the LHC. It also predicts a radion with a mass of a few GeV that is very weakly coupled to standard model matter. C1 [Bai, Yang; Carena, Marcela] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Carena, Marcela] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Ponton, Eduardo] Columbia Univ, Dept Phys, New York, NY 10027 USA. RP Bai, Y (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RI Ponton, Eduardo/I-4125-2013 OI Ponton, Eduardo/0000-0003-3138-1136 FU United States Department of Energy [DE-AC02-07CH11359, DE-FG02-92ER-40699] FX We thank Thomas Appelquist, Bogdan Dobrescu, Christopher Hill, Markus Luty, and Carlos Wagner for useful comments, and, in particular, Bill Bardeen for illuminating discussions. E. P. wishes to thank the Fermilab Theory Group for hospitality during various stages of this work. Fermilab is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy. E. P. was supported by DOE under contract DE-FG02-92ER-40699. NR 59 TC 9 Z9 9 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 15 PY 2010 VL 81 IS 6 AR 065004 DI 10.1103/PhysRevD.81.065004 PG 24 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 577BL UT WOS:000276195700087 ER PT J AU Baldauf, T Smith, RE Seljak, U Mandelbaum, R AF Baldauf, Tobias Smith, Robert E. Seljak, Uros Mandelbaum, Rachel TI Algorithm for the direct reconstruction of the dark matter correlation function from weak lensing and galaxy clustering SO PHYSICAL REVIEW D LA English DT Article ID DIGITAL SKY SURVEY; HALO OCCUPATION DISTRIBUTION; LARGE-SCALE STRUCTURE; REDSHIFT-SPACE DISTORTIONS; PROBE WMAP OBSERVATIONS; LUMINOUS RED GALAXIES; COSMOLOGICAL PARAMETERS; POWER-SPECTRUM; INITIAL CONDITIONS; REAL-SPACE AB The clustering of matter on cosmological scales is an essential probe for studying the physical origin and composition of our Universe. To date, most of the direct studies have focused on shear-shear weak lensing correlations, but it is also possible to extract the dark matter clustering by combining galaxy-clustering and galaxy-galaxy-lensing measurements. In order to extract the required information, one must relate the observable galaxy distribution to the underlying dark matter distribution. In this study we develop in detail a method that can constrain the dark matter correlation function from galaxy clustering and galaxy-galaxy-lensing measurements, by focusing on the correlation coefficient between the galaxy and matter overdensity fields. Our goal is to develop an estimator that maximally correlates the two. To generate a mock galaxy catalogue for testing purposes, we use the halo occupation distribution approach applied to a large ensemble of N-body simulations to model preexisting SDSS luminous red galaxy sample observations. Using this mock catalogue, we show that a direct comparison between the excess surface mass density measured by lensing and its corresponding galaxy clustering quantity is not optimal. We develop a new statistic that suppresses the small-scale contributions to these observations and show that this new statistic leads to a cross-correlation coefficient that is within a few percent of unity down to 5h(-1) Mpc. Furthermore, the residual incoherence between the galaxy and matter fields can be explained using a theoretical model for scale-dependent galaxy bias, giving us a final estimator that is unbiased to within 1%, so that we can reconstruct the dark matter clustering power spectrum at this accuracy up to k similar to 1h Mpc(-1). We also perform a comprehensive study of other physical effects that can affect the analysis, such as redshift space distortions and differences in radial windows between galaxy clustering and weak lensing observations. We apply the method to a range of cosmological models and explicitly show the viability of our new statistic to distinguish between cosmological models. C1 [Baldauf, Tobias; Smith, Robert E.; Seljak, Uros] Univ Zurich, Inst Theoret Phys, CH-8001 Zurich, Switzerland. [Seljak, Uros] Univ Calif Berkeley, Dept Phys, Dept Astron, Berkeley, CA 94720 USA. [Seljak, Uros] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Seljak, Uros] Ewha Womans Univ, Seoul 120750, South Korea. [Mandelbaum, Rachel] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA. RP Baldauf, T (reprint author), Univ Zurich, Inst Theoret Phys, Schonberggasse 9, CH-8001 Zurich, Switzerland. EM baldauf@physik.uzh.ch RI Mandelbaum, Rachel/N-8955-2014 OI Mandelbaum, Rachel/0000-0003-2271-1527 FU Swiss National Foundation [200021-116696/1]; Packard Foundation; WCU [R32-2008-000-10130-0] FX We acknowledge V. Desjacques, P. McDonald, and J. Tinker for helpful discussions; V. Springel for making public GADGET-II and for providing his B-FOF halo finder; R. Scoccimarro for making public his 2LPT code. This work is partly supported by the Swiss National Foundation under Contract No. 200021-116696/1, the Packard Foundation, and WCU Grant No. R32-2008-000-10130-0. NR 75 TC 55 Z9 55 U1 0 U2 3 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 15 PY 2010 VL 81 IS 6 AR 063531 DI 10.1103/PhysRevD.81.063531 PG 22 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 577BL UT WOS:000276195700048 ER PT J AU Bousso, R Leichenauer, S AF Bousso, Raphael Leichenauer, Stefan TI Predictions from star formation in the multiverse SO PHYSICAL REVIEW D LA English DT Article ID COSMOLOGICAL CONSTANT; ETERNAL INFLATION AB We compute trivariate probability distributions in the landscape, scanning simultaneously over the cosmological constant, the primordial density contrast, and spatial curvature. We consider two different measures for regulating the divergences of eternal inflation, and three different models for observers. In one model, observers are assumed to arise in proportion to the entropy produced by stars; in the others, they arise at a fixed time (5 or 10 x 10(9) years) after star formation. The star formation rate, which underlies all our observer models, depends sensitively on the three scanning parameters. We employ a recently developed model of star formation in the multiverse, a considerable refinement over previous treatments of the astrophysical and cosmological properties of different pocket universes. For each combination of observer model and measure, we display all single and bivariate probability distributions, both with the remaining parameter(s) held fixed and marginalized. Our results depend only weakly on the observer model but more strongly on the measure. Using the causal diamond measure, the observed parameter values (or bounds) lie within the central 2 sigma of nearly all probability distributions we compute, and always within 3 sigma. This success is encouraging and rather nontrivial, considering the large size and dimension of the parameter space. The causal patch measure gives similar results as long as curvature is negligible. If curvature dominates, the causal patch leads to a novel runaway: it prefers a negative value of the cosmological constant, with the smallest magnitude available in the landscape. C1 [Bousso, Raphael] Univ Calif Berkeley, Ctr Theoret Phys, Dept Phys, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Bousso, R (reprint author), Univ Calif Berkeley, Ctr Theoret Phys, Dept Phys, Berkeley, CA 94720 USA. FU Berkeley Center for Theoretical Physics; National Science Foundation; fqxi [RFP2-08-06]; U. S. Department of Energy [DE-AC02-05CH11231] FX We are grateful to B. Freivogel, R. Harnik, and J. Niemeyer for discussions. This work was supported by the Berkeley Center for Theoretical Physics, by a CAREER grant of the National Science Foundation, by fqxi Grant No. RFP2-08-06, and by the U. S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 51 TC 22 Z9 22 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1550-7998 J9 PHYS REV D JI Phys. Rev. D PD MAR 15 PY 2010 VL 81 IS 6 AR 063524 DI 10.1103/PhysRevD.81.063524 PG 38 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 577BL UT WOS:000276195700041 ER PT J AU Cortes, M Linder, EV AF Cortes, Marina Linder, Eric V. TI Old dark energy SO PHYSICAL REVIEW D LA English DT Article ID SCALAR FIELD; QUINTESSENCE; COSMOLOGY AB Dark energy dynamics in the recent universe is influenced by its evolution through the long, matter-dominated expansion history. A particular dynamical property, the flow variable, remains constant in several classes of scalar field models as long as matter dominates; the dark energy is only free to change this behavior at recent times. This gives natural initial conditions for Monte Carlo studies of dark energy dynamics. We propose a parametrization for the later evolution that covers a wide range of possible behaviors, is tractable in making predictions, and can be constrained by observations. We compare the approach to directly parametrizing the potential, which does not take into account the history of the dark energy dynamics. C1 [Cortes, Marina; Linder, Eric V.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Linder, Eric V.] Ewha Womans Univ, Inst Early Universe, Seoul, South Korea. RP Cortes, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. OI Cortes, Marina/0000-0003-0485-3767 FU U. S. Department of Energy [DE-AC02-05CH11231]; World Class University [R32-2008-000-10130-0] FX We thank Sarah Bridle, Dragan Huterer, Andrew Liddle, Hiranya Peiris, and Anze Slosar for discussions, and are especially grateful to Martin Kunz and David Parkinson for helpful advice. M. C. thanks the Institute for the Early Universe at Ewha University and IPMU Japan, Shinji Tsujikawa, and the Tokyo University of Science for hospitality. We acknowledge the use of the computer system at the Astronomy Centre at the University of Sussex. This work has been supported in part by the Director, Office of Science, Office of High Energy Physics, of the U. S. Department of Energy under Contract No. DE-AC02-05CH11231 and by the World Class University grant R32-2008-000-10130-0. NR 37 TC 2 Z9 2 U1 0 U2 0 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2470-0010 EI 2470-0029 J9 PHYS REV D JI Phys. Rev. D PD MAR 15 PY 2010 VL 81 IS 6 AR 063004 DI 10.1103/PhysRevD.81.063004 PG 10 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 577BL UT WOS:000276195700013 ER PT J AU Xiao, JF Zhuang, QL Law, BE Chen, JQ Baldocchi, DD Cook, DR Oren, R Richardson, AD Wharton, S Ma, SY Martin, TA Verma, SB Suyker, AE Scott, RL Monson, RK Litvak, M Hollinger, DY Sun, G Davis, KJ Bolstad, PV Burns, SP Curtis, PS Drake, BG Falk, M Fischer, ML Foster, DR Gu, LH Hadley, JL Katul, GG Roser, Y McNulty, S Meyers, TP Munger, JW Noormets, A Oechel, WC Paw, KT Schmid, HP Starr, G Torn, MS Wofsy, SC AF Xiao, Jingfeng Zhuang, Qianlai Law, Beverly E. Chen, Jiquan Baldocchi, Dennis D. Cook, David R. Oren, Ram Richardson, Andrew D. Wharton, Sonia Ma, Siyan Martin, Timothy A. Verma, Shashi B. Suyker, Andrew E. Scott, Russell L. Monson, Russell K. Litvak, Marcy Hollinger, David Y. Sun, Ge Davis, Kenneth J. Bolstad, Paul V. Burns, Sean P. Curtis, Peter S. Drake, Bert G. Falk, Matthias Fischer, Marc L. Foster, David R. Gu, Lianhong Hadley, Julian L. Katul, Gabriel G. Matamala, Roser McNulty, Steve Meyers, Tilden P. Munger, J. William Noormets, Asko Oechel, Walter C. Paw U, Kyaw Tha Schmid, Hans Peter Starr, Gregory Torn, Margaret S. Wofsy, Steven C. TI A continuous measure of gross primary production for the conterminous United States derived from MODIS and AmeriFlux data SO REMOTE SENSING OF ENVIRONMENT LA English DT Article DE Gross primary productivity; MODIS; AmeriFlux; Eddy covariance; Regression tree; US; Carbon fluxes; Interannual variability; Satellite data; Biomes ID CARBON-DIOXIDE EXCHANGE; NET ECOSYSTEM EXCHANGE; EDDY-COVARIANCE MEASUREMENTS; ELEVATED ATMOSPHERIC CO2; DIFFERENCE WATER INDEX; NORTHERN GREAT-PLAINS; LIGHT-USE EFFICIENCY; FOREST ECOSYSTEMS; PONDEROSA PINE; DECIDUOUS FOREST AB The quantification of carbon fluxes between the terrestrial biosphere and the atmosphere is of scientific importance and also relevant to climate-policy making. Eddy covariance flux towers provide continuous measurements of ecosystem-level exchange of carbon dioxide spanning diurnal, synoptic, seasonal, and interannual time scales. However, these measurements only represent the fluxes at the scale of the tower footprint. Here we used remotely sensed data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to upscale gross primary productivity (GPP) data from eddy covariance flux towers to the continental scale. We first combined GPP and MODIS data for 42 AmeriFlux towers encompassing a wide range of ecosystem and climate types to develop a predictive GPP model using a regression tree approach. The predictive model was trained using observed GPP over the period 2000-2004, and was validated using observed GPP over the period 2005-2006 and leave-one-out cross-validation. Our model predicted GPP fairly well at the site level. We then used the model to estimate GPP for each I km x I km cell across the U.S. for each 8-day interval over the period from February 2000 to December 2006 using MODIS data. Our GPP estimates provide a spatially and temporally continuous measure of gross primary production for the U.S. that is a highly constrained by eddy covariance flux data. Our study demonstrated that our empirical approach is effective for upscaling eddy flux GPP data to the continental scale and producing continuous GPP estimates across multiple biomes. With these estimates, we then examined the patterns, magnitude, and interannual variability of GPP. We estimated a gross carbon uptake between 6.91 and 7.33 Pg C yr(-1) for the conterminous U.S. Drought, fires, and hurricanes reduced annual GPP at regional scales and could have a significant impact on the U.S. net ecosystem carbon exchange. The sources of the interannual variability of U.S. GPP were dominated by these extreme climate events and disturbances. (C) 2009 Elsevier Inc. All rights reserved. C1 [Xiao, Jingfeng] Purdue Univ, Purdue Climate Change Res Ctr, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA. [Zhuang, Qianlai] Purdue Univ, Purdue Climate Change Res Ctr, Dept Earth & Atmospher Sci, Dept Agron, W Lafayette, IN 47907 USA. [Law, Beverly E.] Oregon State Univ, Coll Forestry, Corvallis, OR 97331 USA. [Chen, Jiquan] Univ Toledo, Dept Environm Sci, Toledo, OH 43606 USA. [Baldocchi, Dennis D.; Ma, Siyan] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Ecosyst Sci Div, Berkeley, CA 94720 USA. [Cook, David R.] Argonne Natl Lab, Div Environm Sci, Argonne, IL 60439 USA. [Oren, Ram; Katul, Gabriel G.] Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA. [Richardson, Andrew D.] Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA. [Wharton, Sonia; Falk, Matthias; Paw U, Kyaw Tha] Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA. [Martin, Timothy A.] Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA. [Verma, Shashi B.; Suyker, Andrew E.] Univ Nebraska, Sch Nat Resources, Lincoln, NE 68583 USA. [Scott, Russell L.] USDA ARS, SW Watershed Res Ctr, Tucson, AZ 85719 USA. [Monson, Russell K.; Burns, Sean P.] Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA. [Litvak, Marcy] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA. [Hollinger, David Y.] US Forest Serv, USDA, NE Res Stn, Durham, NH 03824 USA. [Sun, Ge; McNulty, Steve] US Forest Serv, USDA, So Res Stn, Raleigh, NC 27606 USA. [Davis, Kenneth J.] Univ New Hampshire, Complex Syst Res Ctr, Durham, NH 03824 USA. [Bolstad, Paul V.] Univ Minnesota, Dept Forest Resources, St Paul, MN 55108 USA. [Curtis, Peter S.] Ohio State Univ, Dept Evolut Ecol & Organismal Biol, Columbus, OH 43210 USA. [Drake, Bert G.] Smithsonian Environm Res Ctr, Edgewater, MD 21037 USA. [Fischer, Marc L.] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Dept Atmospher Sci, Berkeley, CA 94720 USA. [Foster, David R.] Harvard Univ, Dept Organism & Evolutionary Biol, Petersham, MA 01366 USA. [Gu, Lianhong] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Matamala, Roser] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. [Meyers, Tilden P.] NOAA, ARL, Atmospher Turbulence & Diffus Div, Oak Ridge, TN 37831 USA. [Wofsy, Steven C.] Harvard Univ, Dept Earth & Planetary Sci, Div Engn & Appl Sci, Cambridge, MA 02138 USA. [Noormets, Asko] N Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27695 USA. [Noormets, Asko] N Carolina State Univ, So Global Change Program, Raleigh, NC 27695 USA. [Oechel, Walter C.] San Diego State Univ, Dept Biol, San Diego, CA 92182 USA. [Schmid, Hans Peter] Indiana Univ, Dept Geog, Bloomington, IN 47405 USA. [Schmid, Hans Peter] FZK IMK IFU, Res Ctr Karlsruhe, Inst Meteorol & Climate Res, D-82467 Garmisch Partenkirchen, Germany. [Starr, Gregory] Univ Alabama, Dept Biol Sci, Tuscaloosa, AL 35487 USA. [Torn, Margaret S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. RP Xiao, JF (reprint author), Penn State Univ, Dept Meteorol, 503 Walker Bldg, University Pk, PA 16802 USA. EM j.xiao@unh.edu RI Munger, J/H-4502-2013; Oechel, Walter/F-9361-2010; Gu, Lianhong/H-8241-2014; Chen, Jiquan/D-1955-2009; Noormets, Asko/A-7257-2009; Katul, Gabriel/A-7210-2008; Meyers, Tilden/C-6633-2016; Richardson, Andrew/F-5691-2011; Hollinger, David/G-7185-2012; Schmid, Hans Peter/I-1224-2012; Garmisch-Pa, Ifu/H-9902-2014; Baldocchi, Dennis/A-1625-2009; Torn, Margaret/D-2305-2015 OI Munger, J/0000-0002-1042-8452; Oechel, Walter/0000-0002-3504-026X; Gu, Lianhong/0000-0001-5756-8738; Law, Beverly/0000-0002-1605-1203; Martin, Timothy/0000-0002-7872-4194; Noormets, Asko/0000-0003-2221-2111; Katul, Gabriel/0000-0001-9768-3693; Richardson, Andrew/0000-0002-0148-6714; Schmid, Hans Peter/0000-0001-9076-4466; Baldocchi, Dennis/0000-0003-3496-4919; FU National Science Foundation (NSF) [EAR-0630319] FX This research was partly supported by the National Science Foundation (NSF) Carbon and Water Program (EAR-0630319). We thank the principal investigators of the MODIS data products including Drs. A.R. Huete, R.B. Myneni, S.W. Running, E.F. Vermote, and Z. Wan. We also thank D.A. Sims, T.A. Boden, S.K.S. Vannan, M. Zhao, Z. Wan, and L Delp for helpful discussion. The MODIS data products were obtained from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC) and the Earth Observing System (EOS) Data Gateway for making these products available. The PRISM climate database was provided by the PRISM Group, Oregon State University (http://www.prismclimate.org). NR 102 TC 112 Z9 119 U1 8 U2 65 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0034-4257 EI 1879-0704 J9 REMOTE SENS ENVIRON JI Remote Sens. Environ. PD MAR 15 PY 2010 VL 114 IS 3 BP 576 EP 591 DI 10.1016/j.rse.2009.10.013 PG 16 WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology GA 559JP UT WOS:000274820700012 ER PT J AU Dale, VH Tharp, ML Lannom, KO Hodges, DG AF Dale, Virginia H. Tharp, M. Lynn Lannom, Karen O. Hodges, Donald G. TI Modeling transient response of forests to climate change SO SCIENCE OF THE TOTAL ENVIRONMENT LA English DT Article DE Climate change; Diversity; Ecosystem model; Effects of global warming; Southeastern forests; Tennessee ID SOUTHEASTERN UNITED-STATES; EASTERN NORTH-AMERICA; GLOBAL CHANGE; US FORESTS; GAP MODELS; ECOSYSTEM RESPONSES; CONTINENTAL-SCALE; RADIAL GROWTH; WHITE OAK; TREE AB Our hypothesis is that a high diversity of dominant life forms in Tennessee forests conveys resilience to disturbance such as climate change. Because of uncertainty in climate change and their effects, three climate change scenarios for 2030 and 2080 from three General Circulation Models (GCMs) were used to simulate a range of potential climate conditions for the state. These climate changes derive from the Intergovernmental Panel on Climate Change (IPCC) "A1B" storyline that assumes rapid global economic growth. The precipitation and temperature projections from the three GCMs for 2030 and 2080 were related to changes in five ecological provinces using the monthly record of temperature and precipitation from 1980 to 1997 for each 1 km cell across the state as aggregated into the provinces. Temperatures are projected to increase in all ecological provinces in all months for all three GCMs for both 2030 and 2080. Precipitation differences from the long-term average are more complex but less striking. The forest ecosystem model LINKAGES was used to simulate conditions for five ecological provinces from 1989 to 2300. Average output projects changes in tree diversity and species composition in all ecological provinces in Tennessee with the greatest changes in the Southern Mixed Forest province. Projected declines in total tree biomass are followed by biomass recovery as species replacement occurs in stands. The Southern Mixed Forest province results in less diversity in dominant trees as well as lower overall biomass than projections for the other four provinces. The biomass and composition changes projected in this study differ from forest dynamics expected without climate change. These results suggest that biomass recovery following climate change is linked to dominant tree diversity in the southeastern forest of the US. The generality of this observation warrants further investigation, for it relates to ways that forest management may influence climate change effects. (C) 2009 Elsevier B.V. All rights reserved. C1 [Dale, Virginia H.] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA. [Tharp, M. Lynn] CompSci Consulting LLC, Mcrae, GA USA. [Lannom, Karen O.; Hodges, Donald G.] Univ Tennessee, Dept Forestry Wildlife & Fisheries, Knoxville, TN USA. RP Dale, VH (reprint author), Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA. EM dalevh@ornl.gov OI Hodges, Donald/0000-0001-6751-0927 FU National Commission on Energy Policy; U.S. Department of Energy [DE-AC05-00OR22725] FX This research was supported by a grant from the National Commission on Energy Policy. Paul Hanson, Mac Post, Joel Smith, Stan Wullschleger, and two anonymous reviewers provided useful suggestions for this study. The General Circulation Model data and PDFs were supplied by Seth McGinnis of the National Center on Atmospheric Research to Stratus Consulting Inc. and then to this project Oak Ridge National Laboratory is managed by the UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. NR 87 TC 15 Z9 18 U1 2 U2 18 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0048-9697 J9 SCI TOTAL ENVIRON JI Sci. Total Environ. PD MAR 15 PY 2010 VL 408 IS 8 BP 1888 EP 1901 DI 10.1016/j.scitotenv.2009.11.050 PG 14 WC Environmental Sciences SC Environmental Sciences & Ecology GA 582IU UT WOS:000276591300015 PM 20163827 ER PT J AU Tsetseris, L Logothetidis, S Pantelides, ST AF Tsetseris, L. Logothetidis, S. Pantelides, S. T. TI Atomic-scale mechanisms for diffusion of impurities in transition-metal nitrides SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT Symposium on Protective Coatings and Thin Films held at the 2009 E-MRS Spring Meeting CY JUN 08-12, 2009 CL Strasbourg, FRANCE SP European Mat Res Soc DE Ab initio; Diffusion; Barrier; Nitrides; Transition-metal; Activation ID CU/SI CONTACT SYSTEMS; AUGMENTED-WAVE METHOD; THIN-FILMS; PREFERRED ORIENTATION; THERMAL-STABILITY; MOS DEVICES; TIN FILMS; BARRIER; CU; COPPER AB We use results from first-principles calculations based on density-functional theory to evaluate the performance of ZrN, HfN, and TiN as diffusion barrier materials. We examine primarily migration of Cu impurities through the bulk or through inter-grain voids of nitride films and we elucidate the conditions that favor moderate diffusion in the former case and very rapid migration in the latter. Migration activation energies for Cu interstitials in the bulk of the materials lie in the range of 0.9-1.4 eV, while the corresponding values for surface diffusion of Cu adatoms vary between 0.1 and 0.55 eV. Based on the agreement between the calculated activation energies and available measured values we resolve previous conflicting suggestions that were used to interpret various experimental data. Overall, our findings highlight the role of native point defects, impurities, and film texture on the performance of nitride diffusion barrier materials. (C) 2009 Elsevier B.V. All rights reserved. C1 [Tsetseris, L.; Logothetidis, S.] Aristotle Univ Thessaloniki, Dept Phys, GR-54124 Thessaloniki, Greece. [Tsetseris, L.; Pantelides, S. T.] Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA. [Pantelides, S. T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Tsetseris, L (reprint author), Aristotle Univ Thessaloniki, Dept Phys, GR-54124 Thessaloniki, Greece. EM leonidas.tsetseris@vanderbilt.edu NR 40 TC 6 Z9 6 U1 4 U2 25 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD MAR 15 PY 2010 VL 204 IS 12-13 BP 2089 EP 2094 DI 10.1016/j.surfcoat.2009.09.002 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA 570QE UT WOS:000275692100047 ER PT J AU Kuntova, Z Tringides, MC Binz, SM Hupalo, M Chvoj, Z AF Kuntova, Z. Tringides, M. C. Binz, S. M. Hupalo, M. Chvoj, Z. TI Controlling nucleation rates in nanostructures with electron confinement SO SURFACE SCIENCE LA English DT Article DE Monte Carlo simulations; Models of surface kinetics; Scanning tunneling microscopy; Nucleation; Quantum size effects ID GROWTH; HOMOEPITAXY AB One of the goals for growing low dimensional structures is to explore their electronic structure variation with size due to confinement. Recent experiments in Pb adsorption on Pb islands of stable and unstable height at low temperatures have shown a spectacular variation in the nucleated island density (similar to 60 times) as a function of height. With Monte Carlo simulations we can faithfully reproduce the observed morphologies with a single assumption that i(c) is different on stable and unstable islands. This shows that confinement can result in large oscillations of nucleation rates and adsorption. (C) 2009 Elsevier B.V. All rights reserved. C1 [Kuntova, Z.; Chvoj, Z.] Acad Sci Czech Republic, Inst Phys, Vvi, Prague 18221 8, Czech Republic. [Tringides, M. C.; Binz, S. M.; Hupalo, M.] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA. RP Kuntova, Z (reprint author), Acad Sci Czech Republic, Inst Phys, Vvi, Na Slovance 2, Prague 18221 8, Czech Republic. EM kuntova@fzu.cz RI Chromcova, Zdenka/H-3101-2014 FU Grant Agency of Academy of Sciences of the Czech Republic [IAA100100903]; Institute Research Plan [AV0Z10100521]; Grant of MSMT of Czech Republic [ME 09048]; Department of Energy Basic Sciences [DEAC0207CH11358]; [NSFINT0308505] FX This work has been supported by the Grant Agency of Academy of Sciences of the Czech Republic, No. IAA100100903, by the Institute Research Plan No. AV0Z10100521 and Grant of MSMT of Czech Republic No. ME 09048. Work at the Ames Laboratory was supported by the Department of Energy Basic Sciences under Contract DEAC0207CH11358. Financial support for the collaboration was also provided by the Grant NSFINT0308505 USA. NR 18 TC 1 Z9 1 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD MAR 15 PY 2010 VL 604 IS 5-6 BP 519 EP 522 DI 10.1016/j.susc.2009.12.015 PG 4 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 578MF UT WOS:000276297000011 ER PT J AU Chen, DA Ratliff, JS Hu, XF Gordon, WO Senanayake, SD Mullins, DR AF Chen, Donna A. Ratliff, Jay S. Hu, Xiaofeng Gordon, Wesley O. Senanayake, Sanjaya D. Mullins, David R. TI Dimethyl methylphosphonate decomposition on fully oxidized and partially reduced ceria thin films SO SURFACE SCIENCE LA English DT Article DE Soft X-ray photoelectron spectroscopy; Thermal desorption spectroscopy; Catalysis; Surface chemical reaction; Phosphorus ID TEMPERATURE-PROGRAMMED DESORPTION; RAY PHOTOELECTRON-SPECTROSCOPY; SCANNING-TUNNELING-MICROSCOPY; MANGANESE OXIDE CATALYSTS; TREATED MAGNESIUM-OXIDE; WARFARE AGENT SIMULANT; METAL-OXIDES; ORGANOPHOSPHORUS COMPOUNDS; RELEASE PROPERTIES; OXYGEN STORAGE AB The thermal decomposition of dimethyl methylphosphonate (DMMP) on crystalline ceria thin films grown on Ru(0001) was studied by temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS) and infrared absorption reflection spectroscopy (IRAS). TPD experiments show that methanol and formaldehyde desorb as the two main products at 575 K, while water, formaldehyde and CO are produced above 800 K. IRAS studies demonstrate that DMMP adsorbs via the phosphoryl oxygen at 200 K, but the P=O bond converts to a bridging O-P-O species at 300 K. DMMP decomposition initially occurs via P-OCH(3) bond scission to form methyl methylphosphonate (MMP) and methyl phosphonate (MP) between 300 and 500 K; XPS and IRAS data are consistent with a methoxy intermediate on the surface at these temperatures. The more stable P-CH(3) bonds remain intact up to 700 K, and the only surface intermediate at higher temperatures is believed to be PO(x). Although the presence of PO(x) decreases activity for DMMP decomposition, some activity on the ceria surface remains even after 7 cycles of adsorption and reaction. The ceria films become reduced by multiple DMMP adsorption-reaction cycles, with the Ce(+4) content dropping to 30% after seven cycles. Investigations of DMMP reaction on reduced ceria surfaces show that CO and H(2) are produced in addition to methanol and formaldehyde. Furthermore, DMMP decomposition activity on the reduced ceria films is almost completely inhibited after only 3 adsorption-reaction cycles. Similarities between DMMP and methanol chemistry on the ceria films suggest that methoxy is a key surface intermediate in both reactions. (C) 2009 Elsevier B.V. All rights reserved. C1 [Chen, Donna A.; Ratliff, Jay S.; Hu, Xiaofeng] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA. [Gordon, Wesley O.; Senanayake, Sanjaya D.; Mullins, David R.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Chen, DA (reprint author), Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA. EM chen@mail.chem.sc.edu RI Senanayake, Sanjaya/D-4769-2009; OI Senanayake, Sanjaya/0000-0003-3991-4232; Chen, Donna A./0000-0003-4962-5530 FU US Army Research Office [W911NF-05-1-0184]; Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy [DE-AC05-000R22725, DE-AC02-98CH10886] FX We gratefully acknowledge financial support from the US Army Research Office (W911NF-05-1-0184). D.R.M., W.O.G. and S.D.S. are supported by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy, under Contract DE-AC05-000R22725 with Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC. Use of the National Synchrotron Light Source, Brookhaven National Laboratory, was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. NR 66 TC 18 Z9 18 U1 1 U2 45 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PD MAR 15 PY 2010 VL 604 IS 5-6 BP 574 EP 587 DI 10.1016/j.susc.2009.12.028 PG 14 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA 578MF UT WOS:000276297000020 ER PT J AU Hill, AA Lipert, RJ Porter, MD AF Hill, April A. Lipert, Robert J. Porter, Marc D. TI Determination of colloidal and dissolved silver in water samples using colorimetric solid-phase extraction SO TALANTA LA English DT Article DE Solid-phase extraction; Diffuse reflectance spectroscopy; Colloidal silver; Silver(I) ID REFLECTANCE SPECTROSCOPY; DRINKING-WATER; NICKEL(II); IODINE AB The increase in bacterial resistance to antibiotics has led to resurgence in the use of silver as a biocidal agent in applications ranging from washing machine additives to the drinking water treatment system on the International Space Station (ISS) However, growing concerns about the possible toxicity of colloidal silver to bacteria, aquatic organisms and humans have led to recently issued regulations by the US EPA and FDA regarding the usage of silver. As part of an ongoing project, we have developed a rapid, simple method for determining total silver, both ionic (silver(I)) and colloidal, in 0.1-1 mg/L aqueous samples, which spans the ISS potable water target of 03-0.5 mg/L (total silver) and meets the US EPA limit of 0 1 mg/L in drinking water. The method is based on colorimetric solid-phase extraction (C-SPE) and involves the extraction of silver(I) from water samples by passage through a solid-phase membrane impregnated with the colorimetric reagent DMABR (5-[4-(dimethylamino)benzylidene]rhodanine) Silver(I) exhaustively reacts with impregnated DMABR to form a colored compound, which is quantified using a handheld diffuse reflectance spectrophotometer. Total silver is determined by first passing the sample through a cartridge containing Oxone, which exhaustively oxidizes colloidal silver to dissolved silver(I). The method, which takes less than 2 min to complete and requires only similar to 1 mL of sample, has been validated through a series of tests, including a comparison with the ICP-MS analysis of a water sample from ISS that contained both silver(I) and colloidal silver. Potential earth-bound applications are also briefly discussed. (C) 2009 Elsevier B.V. All rights reserved. C1 [Porter, Marc D.] Univ Utah, Dept Chem, Salt Lake City, UT 84108 USA. [Porter, Marc D.] Univ Utah, Dept Chem Engn Bioengn & Pathol, Salt Lake City, UT 84108 USA. [Hill, April A.; Lipert, Robert J.] US DOE, Ames Lab, Ames, IA 50011 USA. [Hill, April A.; Lipert, Robert J.] Iowa State Univ, Inst Combinatorial Discovery, Dept Chem, Ames, IA 50011 USA. [Hill, April A.; Lipert, Robert J.] Iowa State Univ, Inst Combinatorial Discovery, Dept Chem & Biol Engn, Ames, IA 50011 USA. RP Porter, MD (reprint author), Univ Utah, Dept Chem, Salt Lake City, UT 84108 USA. RI Lipert, Robert/A-8571-2009 FU NASA [NAG91510]; U.S. Department of Energy [DE-AC02-07CH11358] FX The authors would like to acknowledge Jeff Rutz, Dan Gazda and John Schultz of Wyle Laboratories for insightful discussions and for providing the ISS water sample. The expert input and assistance of Lorraine Siperko of the University of Utah is also noted. This work was supported by NASA contract NAG91510. The Ames Laboratory is operated by Iowa State University under U.S. Department of Energy contract DE-AC02-07CH11358. NR 31 TC 16 Z9 16 U1 3 U2 22 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-9140 J9 TALANTA JI Talanta PD MAR 15 PY 2010 VL 80 IS 5 BP 1606 EP 1610 DI 10.1016/j.talanta.2009.09.056 PG 5 WC Chemistry, Analytical SC Chemistry GA 569QG UT WOS:000275612500003 PM 20152384 ER PT J AU Cho, H de Jong, WA Soderquist, CZ AF Cho, Herman de Jong, Wibe A. Soderquist, Chuck Z. TI Probing the oxygen environment in UO22+ by solid-state O-17 nuclear magnetic resonance spectroscopy and relativistic density functional calculations (vol 132, 084501, 2010) SO JOURNAL OF CHEMICAL PHYSICS LA English DT Correction DE density functional theory; HF calculations C1 [Cho, Herman; de Jong, Wibe A.; Soderquist, Chuck Z.] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. RP Cho, H (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, POB 999, Richland, WA 99352 USA. EM hm.cho@pnl.gov RI DE JONG, WIBE/A-5443-2008 OI DE JONG, WIBE/0000-0002-7114-8315 NR 1 TC 0 Z9 0 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD MAR 14 PY 2010 VL 132 IS 10 AR 109901 DI 10.1063/1.3342063 PG 1 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 569IL UT WOS:000275589700049 PM 20232988 ER PT J AU Graciani, J Plata, JJ Sanz, JF Liu, P Rodriguez, JA AF Graciani, Jesus Plata, Jose J. Fdez Sanz, Javier Liu, Ping Rodriguez, Jose A. TI A theoretical insight into the catalytic effect of a mixed-metal oxide at the nanometer level: The case of the highly active metal/CeOx/TiO2(110) catalysts SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article DE association; catalysis; catalysts; cerium compounds; density functional theory; electron detachment; Hubbard model; nanoparticles; reduction (chemical); scanning tunnelling microscopy; surface chemistry; surface states; titanium compounds ID GAS SHIFT REACTION; DENSITY-FUNCTIONAL THEORY; AUTOMOTIVE POLLUTION-CONTROL; LOW-INDEX SURFACES; LOW-TEMPERATURE; ELECTRONIC-STRUCTURE; HYDROGEN-PRODUCTION; WATER DISSOCIATION; RUTILE TIO2(110); GOLD CATALYSTS AB The structural and electronic properties of CeOx species supported on the rutile TiO2(110) surface have been examined by means of periodic density-functional calculations that use a generalized gradient approximation functional including a Hubbard-like type correction. Deposition of Ce atoms leads in a first step to Ce3+ ions bound to the surface through bridge and in-plane oxygen atoms, the released electrons occupying the Ti 3d empty orbitals. Further addition of Ce and molecular oxygen gives place to Ce2O3 dimers diagonally arranged on the surface, in agreement with the spots observed in the scanning tunnel microscope images. The formation process of CeOx nanoparticles (NPs) on the TiO2 surface is highly exothermic and our calculations show that the redox properties of the Ce(III)-Ce(IV) couple are significantly altered when it is supported on TiO2. In particular the reactivity against CO/O-2 indicates that on the surface the presence of Ce(III) is favored over Ce(IV) species. Our results also indicate that the CeOx/TiO2 interface should be seen like a real mixed-metal oxide rather than a supported NP of ceria. Finally, in the context of the high catalytic activity of the M/CeOx/TiO2 (M=Au,Cu,Pt) systems in the water-gas shift reaction, we have examined the dissociation of water on the CeOx/TiO2 surface and estimated a barrier as small as 0.04 eV, i.e. similar to 8 times smaller than that computed for a TiO2 oxygen vacancy. This result agrees with the experimental superior catalytic activity of the M/CeOx/TiO2 systems over M/TiO2. C1 [Graciani, Jesus; Liu, Ping; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. [Graciani, Jesus; Plata, Jose J.; Fdez Sanz, Javier] Univ Seville, Dept Quim Fis, Fac Quim, E-41012 Seville, Spain. RP Graciani, J (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM graciani@us.es RI Graciani, Jesus/B-1136-2009; Plata Ramos, Jose Javier/D-4096-2011 OI Plata Ramos, Jose Javier/0000-0002-0859-0450 FU Spanish Ministerio de Ciencia e Innovacion, MICINN [MAT2005-01872, CSD2008-0023]; Junta de Andalucia [FQM-132]; U.S. Department of Energy, Division of Chemical Sciences [DE-AC02-98CH10886] FX This work was supported by the Spanish Ministerio de Ciencia e Innovacion, MICINN, (Grant Nos. MAT2005-01872 and CSD2008-0023), and Junta de Andalucia (Grant No. FQM-132). The work done at the Brookhaven Nat. Lab was funded by the U.S. Department of Energy, Division of Chemical Sciences (Grant No. DE-AC02-98CH10886). We also thank the computational resources provided by the Barcelona Supercomputing Center-Centro Nacional de Supercomputacion (Spain). NR 63 TC 51 Z9 51 U1 6 U2 50 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD MAR 14 PY 2010 VL 132 IS 10 AR 104703 DI 10.1063/1.3337918 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 569IL UT WOS:000275589700041 PM 20232980 ER PT J AU Pan, H Gu, BH Eres, G Zhang, ZY AF Pan, Hui Gu, Baohua Eres, Gyula Zhang, Zhenyu TI Ab initio study on noncompensated CrO codoping of GaN for enhanced solar energy conversion SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article DE ab initio calculations; carrier density; carrier mobility; catalysis; catalysts; chromium compounds; conduction bands; energy gap; gallium compounds; III-V semiconductors; localised states; photochemistry; semiconductor doping; solar energy conversion ID SOLID-SOLUTION; DOPED TIO2; WATER; PHOTOCATALYST; NANOWIRES; HYDROGEN AB We describe a novel photocatalyst obtained by codoping GaN with CrO, according to a new "noncompensated" codoping concept based on first-principles calculations. The approach enables controllable narrowing of the GaN band gap with significantly enhanced carrier mobility and photocatalytic activity in the visible light region and thus offers immense potential for application in solar energy conversion, water splitting, and a variety of solar-assisted photocatalysis. Our calculations indicate that the formation energy for the cation doping is greatly reduced by noncompensated codoping with an anion. Although Cr doping alone can split the band gap with the formation of an intermediate band, the mobility is low due to carrier trapping by the localized states. The first-principles calculations also demonstrate that CrO codoping of GaN shifts the Fermi level into the conduction band resulting in high carrier density and mobility. C1 [Pan, Hui; Eres, Gyula; Zhang, Zhenyu] Oak Ridge Natl Lab, Div Mat Sci, Oak Ridge, TN 37831 USA. [Eres, Gyula; Zhang, Zhenyu] Oak Ridge Natl Lab, Div Technol, Oak Ridge, TN 37831 USA. [Zhang, Zhenyu] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Pan, H (reprint author), Oak Ridge Natl Lab, Div Mat Sci, Oak Ridge, TN 37831 USA. EM panh@ihpc.a-star.edu.sg RI Gu, Baohua/B-9511-2012; Dom, Rekha/B-7113-2012; Pan, Hui/A-2702-2009; Eres, Gyula/C-4656-2017 OI Gu, Baohua/0000-0002-7299-2956; Pan, Hui/0000-0002-6515-4970; Eres, Gyula/0000-0003-2690-5214 FU Office of Basic Energy Sciences, Division of Materials Science and Engineering, U.S. Department of Energy (DOE); DOE [DE-AC05-00OR22725] FX This work was sponsored in part by the Office of Basic Energy Sciences, Division of Materials Science and Engineering, U.S. Department of Energy (DOE), and by the Laboratory Directed Research and Development (LDRD) Program of Oak Ridge National Laboratory (ORNL), which is managed by UT-Battelle LLC for DOE under Contract No. DE-AC05-00OR22725. The first-principles calculations were performed at ORNL Computational Center of Science (CCS) NR 25 TC 20 Z9 20 U1 3 U2 25 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD MAR 14 PY 2010 VL 132 IS 10 AR 104501 DI 10.1063/1.3337919 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 569IL UT WOS:000275589700026 PM 20232965 ER PT J AU Yao, JM Le, AP Gray, SK Moore, JS Rogers, JA Nuzzo, RG AF Yao, Jimin Le, An-Phong Gray, Stephen K. Moore, Jeffrey S. Rogers, John A. Nuzzo, Ralph G. TI Functional Nanostructured Plasmonic Materials SO ADVANCED MATERIALS LA English DT Article ID ENHANCED RAMAN-SCATTERING; SUBWAVELENGTH HOLE ARRAYS; EXTRAORDINARY OPTICAL-TRANSMISSION; SELF-ASSEMBLED MONOLAYERS; LIGHT TRANSMISSION; SOFT LITHOGRAPHY; RESONANCE SPECTROSCOPY; NANOSPHERE LITHOGRAPHY; GOLD SURFACES; IMPRINT LITHOGRAPHY AB Plasmonic crystals fabricated with precisely controlled arrays of subwave-length metal nanostructures provide a promising platform for sensing and imaging of surface binding events with micrometer spatial resolution over large areas. Soft nanoimprint lithography provides a robust, cost-effective method for producing highly uniform plasmonic crystals of this type with predictable optical properties. The tunable multimode plasmonic resonances of these crystals and their ability for integration into lab-on-a-chip microfluidic systems can both be harnessed to achieve exceptionally high analytical sensitivities down to submonolayer levels using even a common optical microscope, circumventing numerous technical limitations of more conventional surface plasmon resonance techniques. In this article, we highlight some recent advances in this field with an emphasis on the fabrication and characterization of these integrated devices and their demonstrated applications. C1 [Le, An-Phong; Moore, Jeffrey S.; Nuzzo, Ralph G.] Univ Illinois, Dept Chem, Urbana, IL 61801 USA. [Gray, Stephen K.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Rogers, John A.] Univ Illinois, Dept Mat Sci & Engn, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA. RP Nuzzo, RG (reprint author), Univ Illinois, Dept Chem, 600 S Mathews Ave, Urbana, IL 61801 USA. EM r-nuzzo@illinois.edu RI Rogers, John /L-2798-2016 FU U.S. Department of Energy, Materials Science Division [DE-FG02-07ER46471]; Frederick Seitz Materials Research Laboratory (FSMRL); U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX The authors acknowledge the support of the U.S. Department of Energy, Materials Science Division under award number DE-FG02-07ER46471, through the Frederick Seitz Materials Research Laboratory (FSMRL) at the University of Illinois. The authors gratefully acknowledge use of the FSMRL Central Facilities, including the Center for Microanalysis of Materials. Use of the Center for Nanoscale Materials was supported by the U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under contract number DE-AC02-06CH11357. NR 102 TC 81 Z9 82 U1 11 U2 112 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR 12 PY 2010 VL 22 IS 10 SI SI BP 1102 EP 1110 DI 10.1002/adma.200904097 PG 9 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573UB UT WOS:000275939300007 PM 20401934 ER PT J AU Bareno, J Lei, CH Wen, JG Kang, SH Petrov, I Abraham, DP AF Bareno, J. Lei, C. H. Wen, J. G. Kang, S-H Petrov, I. Abraham, D. P. TI Local Structure of Layered Oxide Electrode Materials for Lithium-Ion Batteries SO ADVANCED MATERIALS LA English DT Article ID CELLS; LI2MNO3; DIFFRACTION; MICROSCOPY; ELECTROCHEMISTRY; PARTICLES; MN; NI; CO AB Li-ion batteries are promising candidates for electrical energy storage in applications ranging from portable electronics to hybrid and electric vehicles. In this context, layered compounds in the Li(1+delta)(TM(x)Mn(1-x))(1-delta)O(2) family (TM=transition metal) have received much attention due to their high capacity and stability. In this Research News article we describe recent advances on structural characterization of Li-ion electrode materials using state-of-the-art electron microscopy. Direct evidence of the monoclinic nature of Li(2)MnO(3) has been provided. It has been demonstrated that differences in Z-contrast imaging between Li(2)MnO(3) and LiTMO(2) may be used to screen samples for phase separation in the 10-100 nm scale. C1 [Bareno, J.; Lei, C. H.; Wen, J. G.; Petrov, I.] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA. [Bareno, J.; Kang, S-H; Abraham, D. P.] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA. RP Petrov, I (reprint author), Univ Illinois, Frederick Seitz Mat Res Lab, 104 S Goodwin Ave, Urbana, IL 61801 USA. EM petrov@illinois.edu; abraham@anl.gov RI Kang, Sun-Ho/E-7570-2010; Petrov, Ivan/D-4910-2011; OI Petrov, Ivan/0000-0002-2955-4897; Bareno, Javier/0000-0003-1230-9278 FU U.S. Department of Energy [E-FG02-07ER46453, DE-FG02-07ER46471, DE-AC02-06CH11357] FX We acknowledge the use of the Center for Microanalysis of Materials (CMM) at the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign (Illinois), which is partially supported by the U.S. Department of Energy under grant DE-FG02-07ER46453 and DE-FG02-07ER46471. Argonne National Laboratory is a U.S. Department of Energy Office of Science laboratory operated by UChicago Argonne LLC under contract DE-AC02-06CH11357. We are grateful to M. Balasubramanian at the Advance Photon Source, Argonne and M. Sardela at CMM-Illinois for their experimental contributions and ideas; and to J.A. Lewis at MRL-Illinois for her critical reading and comments on the manuscript. NR 27 TC 92 Z9 96 U1 9 U2 130 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR 12 PY 2010 VL 22 IS 10 SI SI BP 1122 EP 1127 DI 10.1002/adma.200904247 PG 6 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573UB UT WOS:000275939300009 PM 20401936 ER PT J AU Abbamonte, P Wong, GCL Cahill, DG Reed, JP Coridon, RH Schmidt, NW Lai, GH Il Joe, Y Casa, D AF Abbamonte, Peter Wong, Gerard C. L. Cahill, David G. Reed, James P. Coridon, Robert H. Schmidt, Nathan W. Lai, Ghee Hwee Il Joe, Young Casa, Diego TI Ultrafast Imaging and the Phase Problem for Inelastic X-Ray Scattering SO ADVANCED MATERIALS LA English DT Article ID LIQUID WATER; COLLECTIVE DYNAMICS; ENERGY RESOLUTION; SPECTROSCOPY; BOND; RECONSTRUCTION; SCIENCE AB A new method for imaging ultrafast dynamics in condensed matter using inelastic X-ray scattering (IXS) is described. Using the concepts of causality and irreversibility a general solution to the inverse scattering problem (or "phase problem") for IXS is illustrated, which enables direct imaging of dynamics of the electron density with resolutions of similar to 1 attosecond (10(-18) s) in time and <1 angstrom in space. This method is not just Fourier transformation of the IXS data, but a means to impose causality on the data and reconstruct the charge propagator. The method can also be applied to inelastic electron or neutron scattering. A general outline of phenomena that can and cannot be studied with this technique and an outlook for the future is provided. C1 [Abbamonte, Peter; Wong, Gerard C. L.; Cahill, David G.; Reed, James P.; Coridon, Robert H.; Schmidt, Nathan W.; Lai, Ghee Hwee; Il Joe, Young] Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA. [Casa, Diego] Argonne Natl Lab, Adv Photon Source, Argonne, IL USA. RP Abbamonte, P (reprint author), Univ Illinois, Frederick Seitz Mat Res Lab, Urbana, IL 61801 USA. EM abbamonte@mrl.uiuc.edu RI Cahill, David/B-3495-2014; Casa, Diego/F-9060-2016 FU Office of Basic Energy Sciences, U.S. Department of Energy [DE-FG02-07ER46459, DE-AC02-O6CH11357]; NSF Water CAMPWS; RPI-UIUC NSEC [DMR-0117792, DMR-0642573] FX We acknowledge Thomas Gog, Michael Krisch, and Alfred Baron for important scientific and technical input. This work was supported by the Office of Basic Energy Sciences, U.S. Department of Energy, DE-FG02-07ER46459, through the Frederick Seitz Materials Research Laboratory. Use of the APS was supported by the DOE Contract DE-AC02-O6CH11357. G.W. is supported by the NSF Water CAMPWS and the RPI-UIUC NSEC (DMR-0117792, DMR-0642573). NR 43 TC 9 Z9 9 U1 2 U2 14 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR 12 PY 2010 VL 22 IS 10 SI SI BP 1141 EP 1147 DI 10.1002/adma.200904098 PG 7 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573UB UT WOS:000275939300012 PM 20401938 ER PT J AU Shah, AB Ramasse, QM Zhai, XF Wen, JG May, SJ Petrov, I Bhattacharya, A Abbamonte, P Eckstein, JN Zuo, JM AF Shah, Amish B. Ramasse, Quentin M. Zhai, Xiaofang Wen, Jian Guo May, Steve J. Petrov, Ivan Bhattacharya, Anand Abbamonte, Peter Eckstein, James N. Zuo, Jian-Min TI Probing Interfacial Electronic Structures in Atomic Layer LaMnO3 and SrTiO3 Superlattices SO ADVANCED MATERIALS LA English DT Article ID X-RAY-ABSORPTION; OXIDES; SPECTROSCOPY; FILMS AB The interfacial electronic structure characterization of a mx(LaMnO3)/nx(SrTiO3) superlattice based on scanning transmission electron microscopy and electron energy loss spectroscopy. Evidence of interfacial band alignment and electron transfer are presented based on the observation of O K edge of individual transition metal and oxygen atomic columns. Electron probe aberration correction was essential for the high spatial resolution mapping of interfacial electronic states. C1 [Shah, Amish B.; Zuo, Jian-Min] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA. [Shah, Amish B.; Zhai, Xiaofang; Wen, Jian Guo; Petrov, Ivan; Abbamonte, Peter; Eckstein, James N.; Zuo, Jian-Min] Univ Illinois, Fredrick Seitz Mat Res Lab, Urbana, IL 61801 USA. [Ramasse, Quentin M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA. [Zhai, Xiaofang; Abbamonte, Peter; Eckstein, James N.] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. [May, Steve J.; Bhattacharya, Anand] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [May, Steve J.; Bhattacharya, Anand] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Zuo, JM (reprint author), Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA. EM jianzuo@illinois.edu RI Bhattacharya, Anand/G-1645-2011; May, Steven/D-8563-2011; Petrov, Ivan/D-4910-2011 OI Bhattacharya, Anand/0000-0002-6839-6860; May, Steven/0000-0002-8097-1549; Petrov, Ivan/0000-0002-2955-4897 FU U.S. Department of Energy, Division of Materials Sciences [DEFG02-91ER45439, DE-AC02-06CH11357, DE-FG02-07ER46453, DE-FG02-07ER46471, DE-AC02-05CH11231] FX Research is supported by the U.S. Department of Energy, Division of Materials Sciences under grant DEFG02-91ER45439 and Argonne National Laboratory under the U.S. Department of Energy grant DE-AC02-06CH11357 Digital Synthesis FWP. Microscopy was carried out at the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois, which is partially supported by the U.S. Department of Energy under grants DE-FG02-07ER46453 and DE-FG02-07ER46471, and the National Center for Electron Microscopy, Lawrence Berkeley Lab, which is supported by the U.S. Department of Energy under grant DE-AC02-05CH11231. JMZ thanks Dr. Maria Varela for sharing a preprint of Advanced Materials and helpful discussions. NR 35 TC 39 Z9 39 U1 3 U2 70 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR 12 PY 2010 VL 22 IS 10 SI SI BP 1156 EP + DI 10.1002/adma.200904198 PG 6 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573UB UT WOS:000275939300014 PM 20401940 ER PT J AU Brewer, LN Follstaedt, DM Hattar, K Knapp, JA Rodriguez, MA Robertson, IM AF Brewer, L. N. Follstaedt, D. M. Hattar, K. Knapp, J. A. Rodriguez, M. A. Robertson, I. M. TI Competitive Abnormal Grain Growth between Allotropic Phases in Nanocrystalline Nickel SO ADVANCED MATERIALS LA English DT Article ID LASER DEPOSITED NICKEL; MAGNETIC-PROPERTIES; NI NANOPARTICLES; CLUSTER-SIZE; STABILITY; FILMS; HCP; NANOCLUSTERS AB Electron backscatter diffraction-generated phase map showing the distribution of the abnormally grown grains for both the face centered cubic (red) and hexagonal close packed (blue) phases. Annealing condition was 17 h at 548 K. C1 [Brewer, L. N.; Follstaedt, D. M.; Hattar, K.; Knapp, J. A.; Rodriguez, M. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Hattar, K.; Robertson, I. M.] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA. RP Brewer, LN (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. EM lnbrewe@sandia.gov FU National Science Foundation, Division of Materials Research [02037400]; U.S. Department of Energy [DE-FG02-07ER46453, DE-FG02-07ER46471] FX Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. This research was partially supported by a grant from National Science Foundation, Division of Materials Research, Award No. 02037400 (IMR and KH) and was carried out in part in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois, which are partially supported by the U.S. Department of Energy under grants DE-FG02-07ER46453 and DE-FG02-07ER46471. Supporting Information is available online from Wiley InterScience or from the author. NR 21 TC 12 Z9 12 U1 0 U2 31 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR 12 PY 2010 VL 22 IS 10 SI SI BP 1161 EP + DI 10.1002/adma.200904245 PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573UB UT WOS:000275939300015 PM 20401941 ER PT J AU Morgado, L Fernandes, AP Londer, YY Bruix, M Salgueiro, CA AF Morgado, Leonor Fernandes, Ana P. Londer, Yuri Y. Bruix, Marta Salgueiro, Carlos A. TI One simple step in the identification of the cofactors signals, one giant leap for the solution structure determination of multiheme proteins SO BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS LA English DT Article DE Multiheme proteins; Cytochromes; NMR; Isotopic labeling; Protein structure ID DESULFOVIBRIO-VULGARIS HILDENBOROUGH; AXIAL LIGAND ORIENTATION; TETRAHEME CYTOCHROME-C; GEOBACTER-SULFURREDUCENS; ESCHERICHIA-COLI; DESULFUROMONAS-ACETOXIDANS; SHEWANELLA-FRIGIDIMARINA; FERRICYTOCHROME C(3); ELECTRONIC-STRUCTURE; REDOX PROPERTIES AB Multiheme proteins play major roles in various biological systems. Structural information on these systems in solution is crucial to understand their functional mechanisms. However, the presence of numerous proton-containing groups in the heme cofactors and the magnetic properties of the heme iron, in particular in the oxidised state, complicates significantly the assignment of the NMR signals. Consequently, the multiheme proteins superfamily is extremely under-represented in structural databases, which constitutes a severe bottleneck in the elucidation of their structural-functional relationships. In this work, we present a strategy that simplifies the assignment of the NMR signals in multiheme proteins and, concomitantly, their solution structure determination, using the triheme cytochrome PpcA from the bacterium Geobacter sulfurreducens as a model. Cost-effective isotopic labeling was used to double label ((13)C/(15)N) the protein in its polypeptide chain, with the correct folding and heme post-translational modifications. The combined analysis of (1)H-(13)C HSQC NMR spectra obtained for labeled and unlabeled samples of PpcA allowed a straight discrimination between the heme cofactors and the polypeptide chain signals and their confident assignment. The results presented here will be the foundations to assist solution structure determination of multiheme proteins, which are still very scarce in the literature. (C) 2010 Elsevier Inc. All rights reserved. C1 [Morgado, Leonor; Fernandes, Ana P.; Salgueiro, Carlos A.] Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, Requimte CQFB, P-2829516 Caparica, Portugal. [Londer, Yuri Y.] Argonne Natl Lab, Biosci Div, Argonne, IL 60439 USA. [Bruix, Marta] CSIC, Inst Quim Fis Rocasolano, Dept Espectroscopia & Estructura Mol, Madrid 28006, Spain. RP Salgueiro, CA (reprint author), Univ Nova Lisboa, Fac Ciencias & Tecnol, Dept Quim, Requimte CQFB, Campus Caparica, P-2829516 Caparica, Portugal. EM csalgueiro@dq.fct.unl.pt RI Bruix, Marta/H-4161-2011; REQUIMTE, AL/H-9106-2013; Chaves, Pedro/K-1288-2013; REQUIMTE, SMB/M-5694-2013; REQUIMTE, UCIBIO/N-9846-2013; Fernandes, Ana/B-2940-2014; Salgueiro, Carlos/A-4522-2013; Morgado, Leonor/D-7387-2013; Caparica, cqfb_staff/H-2611-2013 OI Bruix, Marta/0000-0002-0096-3558; Fernandes, Ana/0000-0002-5201-7993; Salgueiro, Carlos/0000-0003-1136-809X; Morgado, Leonor/0000-0002-3760-5180; FU FCT (Portugal) [PTDC/QUI/70182/2006, PTDC/BIA-PRO/74498/2006]; Fundacao das Universidades Portuguesas (Portugal) [E-69/07]; Ministerio de Educacion y Ciencia (Spain) [HP2006-0047]; Fundacao para a Ciencia e a Tecnologia [SFRH/BD/37415/2007]; [CTQ2008-0080/BQU] FX This work was supported by project Grants PTDC/QUI/70182/2006 and PTDC/BIA-PRO/74498/2006 from FCT (Portugal) and Accao lntegrada E-69/07 from Fundacao das Universidades Portuguesas (Portugal); CTQ2008-0080/BQU and Hispanic-Portuguese Project HP2006-0047 from Ministerio de Educacion y Ciencia (Spain). L.M. is supported by Fundacao para a Ciencia e a Tecnologia Grant SFRH/BD/37415/2007. The authors are grateful to Dr. M. Schiffer and Dr. P.R. Pokkuluri for critical reading of the manuscript. NR 39 TC 6 Z9 6 U1 0 U2 6 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0006-291X J9 BIOCHEM BIOPH RES CO JI Biochem. Biophys. Res. Commun. PD MAR 12 PY 2010 VL 393 IS 3 BP 466 EP 470 DI 10.1016/j.bbrc.2010.02.024 PG 5 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA 574GW UT WOS:000275978400023 PM 20152799 ER PT J AU Fang, QM Kanugula, S Tubbs, JL Tainer, JA Pegg, AE AF Fang, Qingming Kanugula, Sreenivas Tubbs, Julie L. Tainer, John A. Pegg, Anthony E. TI Repair of O-4-Alkylthymine by O-6-Alkylguanine-DNA Alkyltransferases SO JOURNAL OF BIOLOGICAL CHEMISTRY LA English DT Article ID NUCLEOTIDE EXCISION-REPAIR; HUMAN O(6)-ALKYLGUANINE-DNA ALKYLTRANSFERASE; SITE-SPECIFIC MUTAGENESIS; DNA-BINDING MECHANISM; ESCHERICHIA-COLI ADA; O-6-METHYLGUANINE-DNA METHYLTRANSFERASE; O6-ALKYLGUANINE-DNA ALKYLTRANSFERASE; DIFFERENTIAL INACTIVATION; DAMAGE RECOGNITION; ALKYLATING-AGENTS AB O-6-Alkylguanine-DNA alkyltransferase (AGT) plays a major role in repair of the cytotoxic and mutagenic lesion O-6-methylguanine (m(6)G) in DNA. Unlike the Escherichia coli alkyltransferase Ogt that also repairs O-4-methylthymine (m(4)T) efficiently, the human AGT (hAGT) acts poorly on m(4)T. Here we made several hAGT mutants in which residues near the cysteine acceptor site were replaced by corresponding residues from Ogt to investigate the basis for the inefficiency of hAGT in repair of m(4)T. Construct hAGT-03 (where hAGT sequence-V(149)CSSGAVGN(157)- was replaced with the corresponding Ogt - I(143)GRNGTMTG(151)-) exhibited enhanced m(4)T repair activity in vitro compared with hAGT. Three AGT proteins (hAGT, hAGT-03, and Ogt) exhibited similar protection from killing by N-methyl-N'-nitro-N-nitrosoguanidine and caused a reduction in m(6)G-induced G: C to A: T mutations in both nucleotide excision repair (NER)-proficient and -deficient Escherichia coli strains that lack endogenous AGTs. hAGT-03 resembled Ogt in totally reducing the m(4)T-induced T: A to C: G mutations in NER proficient and -deficient strains. Surprisingly, wild type hAGT expression caused a significant but incomplete decrease in NER-deficient strains but a slight increase in T: A to C: G mutation frequency in NER-proficient strains. The T: A to C: G mutations due to O-4-alkylthymine formed by ethylating and propylating agents were also efficiently reduced by either hAGT-03 or Ogt, whereas hAGT had little effect irrespective of NER status. These results show that specific alterations in the hAGT active site facilitate efficient recognition and repair of O-4-alkylthymines and reveal damage-dependent interactions of base and nucleotide excision repair. C1 [Fang, Qingming] Penn State Univ, Coll Med, Dept Cellular & Mol Physiol, Hershey, PA 17033 USA. [Tubbs, Julie L.; Tainer, John A.] Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA. [Tubbs, Julie L.; Tainer, John A.] Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA. [Tainer, John A.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Fang, QM (reprint author), Penn State Univ, Coll Med, Dept Cellular & Mol Physiol, Hershey, PA 17033 USA. EM quf2@psu.edu; aep1@psu.edu RI Fang, Qingming/B-6839-2008 OI Fang, Qingming/0000-0002-4006-0636 FU National Institutes of Health United States Public Health Service [R01-CA018137, CA-097209, CA-071976] FX This work was supported, in whole or in part, by National Institutes of Health United States Public Health Service Grants R01-CA018137, CA-097209, and CA-071976. NR 74 TC 19 Z9 19 U1 1 U2 10 PU AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3996 USA SN 0021-9258 J9 J BIOL CHEM JI J. Biol. Chem. PD MAR 12 PY 2010 VL 285 IS 11 BP 8185 EP 8195 DI 10.1074/jbc.M109.045518 PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 567AE UT WOS:000275413800037 PM 20026607 ER PT J AU Miyabe, K Guiochon, G AF Miyabe, Kanji Guiochon, Georges TI Surface diffusion in reversed-phase liquid chromatography SO JOURNAL OF CHROMATOGRAPHY A LA English DT Review DE Surface diffusion; Molecular diffusivity; Pore diffusion; Mass transfer kinetics; RPLC; HETP equations; Hole-making process; Jumping process ID MASS-TRANSFER KINETICS; OCTADECYLSILYL-SILICA GEL; TRANSFER RATE COEFFICIENT; IMPRINTED STATIONARY-PHASE; NUCLEAR-MAGNETIC-RESONANCE; POROUS POLYMER PACKINGS; DIFFERENT STRUCTURAL CHARACTERISTICS; ENTHALPY-ENTROPY COMPENSATION; ANION-EXCHANGE CHROMATOGRAPHY; INTRAPARTICLE SORPTION RATE AB More than 40 years ago, Giddings pointed out in "Dynamics of Chrornatography" that surface diffusion should become an important research topic in the kinetics of chromatographic phenomena However, few studies on Surface diffusion in adsorbents used in chromatography were published since then. Most scientists use ordinary rate equations to Study mass transfer kinetics in chromatography. They take no account of surface diffusion and overlook the significant contributions of this mass transfer process to chromatographic behavior and to column efficiency at high mobile phase flow rate. Only recently did the significance Of Surface diffusion in separation processes begin to be recognized in connection with the development of new techniques of fist flow, high efficiency chromatography In this review, we revisit the reports on experimental data oil surface diffusion and introduce a surface-restricted molecular diffusion model. derived as a first approximation for the mechanism of surface diffusion, Oil the basis of the absolute rate theory. We also explain how this model accounts for many intrinsic characteristics of surface diffusion that cannot properly be explained by the conventional models Of Surface diffusion (C) 2009 Elsevier B.V. All rights reserved. C1 [Guiochon, Georges] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Miyabe, Kanji] Toyama Univ, Grad Sch Sci & Engn Res, Toyama 9308555, Japan. [Guiochon, Georges] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. RP Guiochon, G (reprint author), Univ Tennessee, Dept Chem, 552 Buehler Hall, Knoxville, TN 37996 USA. NR 159 TC 51 Z9 52 U1 2 U2 40 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD MAR 12 PY 2010 VL 1217 IS 11 BP 1713 EP 1734 DI 10.1016/j.chroma.2009.12.054 PG 22 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 566EV UT WOS:000275353800001 PM 20137790 ER PT J AU Chim, N Riley, R The, J Im, S Segelke, B Lekin, T Yu, MM Hung, LW Terwilliger, T Whitelegge, JP Goulding, CW AF Chim, Nicholas Riley, Robert The, Juliana Im, Soyeon Segelke, Brent Lekin, Tim Yu, Minmin Hung, Li We Terwilliger, Tom Whitelegge, Julian P. Goulding, Celia W. TI An Extracellular Disulfide Bond Forming Protein (DsbF) from Mycobacterium tuberculosis: Structural, Biochemical, and Gene Expression Analysis SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE Mycobacterium tuberculosis; disulfide bond forming protein; structure-function; gene expression data; X-ray crystallography ID THIOREDOXIN-LIKE PROTEIN; ESCHERICHIA-COLI; IN-VIVO; CRYSTAL-STRUCTURE; REDOX PROPERTIES; FOLDING CATALYST; FORMATION INVIVO; DRUG-RESISTANCE; VIBRIO-CHOLERAE; ISOMERASE AB Disulfide bond forming (Dsb) proteins ensure correct folding and disulfide bond formation of secreted proteins. Previously, we showed that Mycobacterium tuberculosis DsbE (Mtb DsbE, Rv2878c) aids in vitro oxidative folding of proteins. Here, we present structural, biochemical, and gene expression analyses of another putative Mtb secreted disulfide bond isomerase protein homologous to Mtb DsbE, Mtb DsbF (Rv1677). The X, ray crystal structure of Mtb DsbF reveals a conserved thioredoxin fold although the active-site cysteines may be modeled in both oxidized and reduced forms, in contrast to the solely reduced form in Mtb DsbE. Furthermore, the shorter loop region in Mtb DsbF results in a more solvent-exposed active site. Biochemical analyses show that, similar to Mtb DsbE, Mtb DsbF can oxidatively refold reduced, unfolded hirudin and has a comparable pK(a) for the active-site solvent-exposed cysteine. However, contrary to Mtb DsbE, the Mtb DsbF redox potential is more oxidizing and its reduced state is more stable. From computational genomics analysis of the M. tuberculosis genome, we identified a potential Mtb DsbF interaction partner, Rv1676, a predicted peroxiredoxin. Complex formation is supported by protein coexpression studies and inferred by gene expression profiles, whereby Mtb DsbF and Rv1676 are upregulated under similar environments. Additionally, comparison of Mtb DsbF and Mtb DsbE gene expression data indicates anticorrelated gene expression patterns, suggesting that these two proteins and their functionally linked partners constitute analogous pathways that may function under different conditions. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Chim, Nicholas; Goulding, Celia W.] UCI, Dept Mol Biol & Biochem, Irvine, CA 92697 USA. [Riley, Robert] Univ Calif Los Angeles, David Geffen Sch Med, Dept Human Genet, Los Angeles, CA 90095 USA. [The, Juliana; Im, Soyeon] Univ Calif Los Angeles, DOE Inst Genom & Prote, Los Angeles, CA 90095 USA. [Segelke, Brent; Lekin, Tim] Lawrence Livermore Natl Lab, Biol & Biotechnol Program, Livermore, CA 94551 USA. [Yu, Minmin] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Terwilliger, Tom] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. [Hung, Li We] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. [Whitelegge, Julian P.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA. [Whitelegge, Julian P.] Univ Calif Los Angeles, Pasarow Mass Spectrometry Lab, NPI Semel Inst, David Geffen Sch Med, Los Angeles, CA 90095 USA. [Goulding, Celia W.] UCI, Dept Pharmaceut Sci, Irvine, CA 92697 USA. RP Goulding, CW (reprint author), UCI, Dept Mol Biol & Biochem, Irvine, CA 92697 USA. EM celia.goulding@uci.edu RI Terwilliger, Thomas/K-4109-2012; OI Terwilliger, Thomas/0000-0001-6384-0320; Hung, Li-Wei/0000-0001-6690-8458 FU National Institutes of Health (NIH) [P01AIO68135]; DOE-BER; HHMI; Colorado State University, NIH, NIAID [NO1 A1-75320] FX This work has been supported by a grant from the National Institutes of Health (NIH), DOE-BER and HHMI (for D.E.) and NTH (P01AIO68135, subcontract for C.W.G.) The authors thank Dr. John T. Belisle, Colorado State University, NIH, NIAID Contract NO1 A1-75320 for generous supply of M. tuberculosis H37Rv genomic DNA. We also thank Drs. Michael Sawaya and Duilio Cascio for invaluable help with data collection and general crystallography. Finally, special thanks to Morgan Beeby for helpful comments. NR 70 TC 14 Z9 15 U1 0 U2 4 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD MAR 12 PY 2010 VL 396 IS 5 BP 1211 EP 1226 DI 10.1016/j.jmb.2009.12.060 PG 16 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 570PZ UT WOS:000275691500003 PM 20060836 ER PT J AU Sadre-Bazzaz, K Whitby, FG Robinson, H Formosa, T Hill, CP AF Sadre-Bazzaz, Kianoush Whitby, Frank G. Robinson, Howard Formosa, Tim Hill, Christopher P. TI Structure of a Blm10 Complex Reveals Common Mechanisms for Proteasome Binding and Gate Opening SO MOLECULAR CELL LA English DT Article ID 20S PROTEASOME; ANGSTROM RESOLUTION; ACTIVATOR PA200; S-PROTEASOME; YEAST; CONFORMATION; ACIDOPHILUM; ATPASES; SUBUNIT; TERMINI AB The proteasome is an abundant protease that is critically important for numerous cellular pathways. Proteasomes are activated in vitro by three known classes of proteins/complexes, including Blm10/PA200. Here, we report a 3.4 angstrom resolution crystal structure of a proteasome-Blm10 complex, which reveals that Blm10 surrounds the proteasome entry pore in the 1.2 MDa complex to form a largely closed dome that is expected to restrict access of potential substrates. This architecture and the observation that Blm10 induces a disordered proteasome gate structure challenge the assumption that Blm10 functions as an activator of proteolysis in vivo. The Blm10 C terminus binds in the same manner as seen for 11S activators and inferred for 19S/PAN activators and indicates a unified model for gate opening. We also demonstrate that Blm10 acts to maintain mitochondrial function. Consistent with the structural data, the C-terminal residues of Blm10 are needed for this activity. C1 [Sadre-Bazzaz, Kianoush; Whitby, Frank G.; Formosa, Tim; Hill, Christopher P.] Univ Utah, Sch Med, Dept Biochem, Salt Lake City, UT 84112 USA. [Robinson, Howard] Brookhaven Natl Lab, Dept Biol, Upton, NY 11973 USA. RP Hill, CP (reprint author), Univ Utah, Sch Med, Dept Biochem, Salt Lake City, UT 84112 USA. FU Offices of Biological and Environmental Research and of Basic Energy Sciences of the US Department of Energy; National Center for Research Resources of the National Institutes of Health; National Institutes of Health [R01 GM059135] FX We thank Chansse Kettelkamp and Hua Xin for technical assistance, Pavel Afonine for running Phenix calculations, Heidi Schubert for assistance and advice on aspects of the crystallography, Daniel Finley and David Legett for providing the yeast strain 5DL135 that expresses the protein A-tagged Pre1 proteasome subunit, David Stillman and Yaxin Yu for MSH1 mRNA data. and Martin Rechsteiner and Beth Stadtmueller for critical comments on the manuscript We gratefully acknowledge the DNA Synthesis and Sequencing Core Facilities at the University of Utah X-ray diffraction data for this study were measured at beamline X29 of the National Synchrotron Light Source (NSLS) Financial support for NSLS comes principally from the Offices of Biological and Environmental Research and of Basic Energy Sciences of the US Department of Energy and from the National Center for Research Resources of the National Institutes of Health This work was supported by National Institutes of Health Grant R01 GM059135 NR 28 TC 63 Z9 78 U1 0 U2 5 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 1097-2765 J9 MOL CELL JI Mol. Cell PD MAR 12 PY 2010 VL 37 IS 5 BP 728 EP 735 DI 10.1016/j.molcel.2010.02.002 PG 8 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 570UB UT WOS:000275702500016 PM 20227375 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D Datta, M Davies, T de Barbaro, P De Cecco, S Deisher, A De Lorenzo, G Dell'Orso, M Deluca, C Demortier, L Deng, J Deninno, M d'Errico, M Di Canto, A di Giovanni, GP Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Frank, MJ Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Garosi, P Gerberich, H Gerdes, D Gessler, A Giagu, S Giakoumopoulou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Giurgiu, G Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U da Costa, JG Gunay-Unalan, Z Haber, C Hahn, SR Halkiadakis, E Han, BY Han, JY Happacher, F Hara, K Hare, D Hare, M Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M Heinrich, J Herndon, M Heuser, J Hewamanage, S Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Hughes, RE Hurwitz, M Husemann, U Hussein, M Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A James, E Jang, D Jayatilaka, B Jeon, EJ Jha, MK Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Ketchum, W Keung, J Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V Kuhr, T Kulkarni, NP Kurata, M Kwang, S Laasanen, AT Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, E Lee, HS Lee, JS Lee, SW Leone, S Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, V Martinez, M Martinez-Ballarin, R Mastrandrea, P Mathis, M Mattson, ME Mazzanti, P McFarland, KS McIntyre, P McNulty, R Mehta, A Mehtala, P Menzione, A Mesropian, C Miao, T Mietlicki, D Miladinovic, N Miller, R Mills, C Milnik, M Mitra, A Mitselmakher, G Miyake, H Moed, S Moggi, N Mondragon, MN Moon, CS Moore, R Morello, MJ Morlock, J Fernandez, PM Mulmenstadt, J Mukherjee, A Muller, T Murat, P Mussini, M Nachtman, J Nagai, Y Naganoma, J Nakamura, K Nakano, I Napier, A Nett, J Neu, C Neubauer, MS Neubauer, S Nielsen, J Nodulman, L Norman, M Norniella, O Nurse, E Oakes, L Oh, SH Oh, YD Oksuzian, I Okusawa, T Orava, R Osterberg, K Griso, SP Pagliarone, C Palencia, E Papadimitriou, V Papaikonomou, A Paramanov, AA Parks, B Pashapour, S Patrick, J Pauletta, G Paulini, M Paus, C Peiffer, T Pellett, DE Penzo, A Phillips, TJ Piacentino, G Pianori, E Pinera, L Pitts, K Plager, C Pondrom, L Potamianos, K Poukhov, O Prokoshin, F Pronko, A Ptohos, F Pueschel, E Punzi, G Pursley, J Rademacker, J Rahaman, A Ramakrishnan, V Ranjan, N Redondo, I Renton, P Renz, M Rescigno, M Richter, S Rimondi, F Ristori, L Robson, A Rodrigo, T Rodriguez, T Rogers, E Rolli, S Roser, R Rossi, M Rossin, R Roy, P Ruiz, A Russ, J Rusu, V Rutherford, B Saarikko, H Safonov, A Sakumoto, WK Santi, L Sartori, L Sato, K Savoy-Navarro, A Schlabach, P Schmidt, A Schmidt, EE Schmidt, MA Schmidt, MP Schmitt, M Schwarz, T Scodellaro, L Scribano, A Scuri, F Sedov, A Seidel, S Seiya, Y Semenov, A Sexton-Kennedy, L Sforza, F Sfyrla, A Shalhout, SZ Shears, T Shepard, PF Shimojima, M Shiraishi, S Shochet, M Shon, Y Shreyber, I Simonenko, A Sinervo, P Sisakyan, A Slaughter, AJ Slaunwhite, J Sliwa, K Smith, JR Snider, FD Snihur, R Soha, A Somalwar, S Sorin, V Squillacioti, P Stanitzki, M Denis, RS Stelzer, B Stelzer-Chilton, O Stentz, D Strologas, J Strycker, GL Suh, JS Sukhanov, A Suslov, I Taffard, A Takashima, R Takeuchi, Y Tanaka, R Tang, J Tecchio, M Teng, PK Thom, J Thome, J Thompson, GA Thomson, E Tipton, P Ttito-Guzman, P Tkaczyk, S Toback, D Tokar, S Tollefson, K Tomura, T Tonelli, D Torre, S Torretta, D Totaro, P Tourneur, S Trovato, M Tsai, SY Tu, Y Turini, N Ukegawa, F Uozumi, S van Remortel, N Varganov, A Vataga, E Vazquez, F Velev, G Vellidis, C Vidal, M Vila, I Vilar, R Vogel, M Volobouev, I Volpi, G Wagner, P Wagner, RG Wagner, RL Wagner, W Wagner-Kuhr, J Wakisaka, T Wallny, R Wang, SM Warburton, A Waters, D Weinberger, M Weinelt, J Wester, WC Whitehouse, B Whiteson, D Wicklund, AB Wicklund, E Wilbur, S Williams, G Williams, HH Wilson, P Winer, BL Wittich, P Wolbers, S Wolfe, C Wolfe, H Wright, T Wu, X Wurthwein, F Yagil, A Yamamoto, K Yamaoka, J Yang, UK Yang, YC Yao, WM Yeh, GP Yi, K Yoh, J Yorita, K Yoshida, T Yu, GB Yu, I Yu, SS Yun, JC Zanetti, A Zeng, Y Zhang, X Zheng, Y Zucchelli, S AF Aaltonen, T. Adelman, J. Alvarez Gonzalez, B. Amerio, S. Amidei, D. Anastassov, A. Annovi, A. Antos, J. Apollinari, G. Apresyan, A. Arisawa, T. Artikov, A. Asaadi, J. Ashmanskas, W. Attal, A. Aurisano, A. Azfar, F. Badgett, W. Barbaro-Galtieri, A. Barnes, V. E. Barnett, B. A. Barria, P. Bartos, P. Bauer, G. Beauchemin, P. -H. Bedeschi, F. Beecher, D. Behari, S. Bellettini, G. Bellinger, J. Benjamin, D. Beretvas, A. Bhatti, A. Binkley, M. Bisello, D. Bizjak, I. Blair, R. E. Blocker, C. Blumenfeld, B. Bocci, A. Bodek, A. Boisvert, V. Bortoletto, D. Boudreau, J. Boveia, A. Brau, B. Bridgeman, A. Brigliadori, L. Bromberg, C. Brubaker, E. Budagov, J. Budd, H. S. Budd, S. Burkett, K. Busetto, G. Bussey, P. Buzatu, A. Byrum, K. L. Cabrera, S. Calancha, C. Camarda, S. Campanelli, M. Campbell, M. Canelli, F. Canepa, A. Carls, B. Carlsmith, D. Carosi, R. Carrillo, S. Carron, S. Casal, B. Casarsa, M. Castro, A. Catastini, P. Cauz, D. Cavaliere, V. Cavalli-Sforza, M. Cerri, A. Cerrito, L. Chang, S. H. Chen, Y. C. Chertok, M. Chiarelli, G. Chlachidze, G. Chlebana, F. Cho, K. Chokheli, D. Chou, J. P. Chung, K. Chung, W. H. Chung, Y. S. Chwalek, T. Ciobanu, C. I. Ciocci, M. A. Clark, A. Clark, D. Compostella, G. Convery, M. E. Conway, J. Corbo, M. Cordelli, M. Cox, C. A. Cox, D. J. Crescioli, F. Almenar, C. Cuenca Cuevas, J. Culbertson, R. Cully, J. C. Dagenhart, D. Datta, M. Davies, T. de Barbaro, P. De Cecco, S. Deisher, A. De Lorenzo, G. Dell'Orso, M. Deluca, C. Demortier, L. Deng, J. Deninno, M. d'Errico, M. Di Canto, A. di Giovanni, G. P. Di Ruzza, B. Dittmann, J. R. D'Onofrio, M. Donati, S. Dong, P. Dorigo, T. Dube, S. Ebina, K. Elagin, A. Erbacher, R. Errede, D. Errede, S. Ershaidat, N. Eusebi, R. Fang, H. C. Farrington, S. Fedorko, W. T. Feild, R. G. Feindt, M. Fernandez, J. P. Ferrazza, C. Field, R. Flanagan, G. Forrest, R. Frank, M. J. Franklin, M. Freeman, J. C. Furic, I. Gallinaro, M. Galyardt, J. Garberson, F. Garcia, J. E. Garfinkel, A. F. Garosi, P. Gerberich, H. Gerdes, D. Gessler, A. Giagu, S. Giakoumopoulou, V. Giannetti, P. Gibson, K. Gimmell, J. L. Ginsburg, C. M. Giokaris, N. Giordani, M. Giromini, P. Giunta, M. Giurgiu, G. Glagolev, V. Glenzinski, D. Gold, M. Goldschmidt, N. Golossanov, A. Gomez, G. Gomez-Ceballos, G. Goncharov, M. Gonzalez, O. Gorelov, I. Goshaw, A. T. Goulianos, K. Gresele, A. Grinstein, S. Grosso-Pilcher, C. Group, R. C. Grundler, U. da Costa, J. Guimaraes Gunay-Unalan, Z. Haber, C. Hahn, S. R. Halkiadakis, E. Han, B. -Y. Han, J. Y. Happacher, F. Hara, K. Hare, D. Hare, M. Harr, R. F. Hartz, M. Hatakeyama, K. Hays, C. Heck, M. Heinrich, J. Herndon, M. Heuser, J. Hewamanage, S. Hidas, D. Hill, C. S. Hirschbuehl, D. Hocker, A. Hou, S. Houlden, M. Hsu, S. -C. Hughes, R. E. Hurwitz, M. Husemann, U. Hussein, M. Huston, J. Incandela, J. Introzzi, G. Iori, M. Ivanov, A. James, E. Jang, D. Jayatilaka, B. Jeon, E. J. Jha, M. K. Jindariani, S. Johnson, W. Jones, M. Joo, K. K. Jun, S. Y. Jung, J. E. Junk, T. R. Kamon, T. Kar, D. Karchin, P. E. Kato, Y. Kephart, R. Ketchum, W. Keung, J. Khotilovich, V. Kilminster, B. Kim, D. H. Kim, H. S. Kim, H. W. Kim, J. E. Kim, M. J. Kim, S. B. Kim, S. H. Kim, Y. K. Kimura, N. Kirsch, L. Klimenko, S. Kondo, K. Kong, D. J. Konigsberg, J. Korytov, A. Kotwal, A. V. Kreps, M. Kroll, J. Krop, D. Krumnack, N. Kruse, M. Krutelyov, V. Kuhr, T. Kulkarni, N. P. Kurata, M. Kwang, S. Laasanen, A. T. Lami, S. Lammel, S. Lancaster, M. Lander, R. L. Lannon, K. Lath, A. Latino, G. Lazzizzera, I. LeCompte, T. Lee, E. Lee, H. S. Lee, J. S. Lee, S. W. Leone, S. Lewis, J. D. Lin, C. -J. Linacre, J. Lindgren, M. Lipeles, E. Lister, A. Litvintsev, D. O. Liu, C. Liu, T. Lockyer, N. S. Loginov, A. Lovas, L. Lucchesi, D. Lueck, J. Lujan, P. Lukens, P. Lungu, G. Lys, J. Lysak, R. MacQueen, D. Madrak, R. Maeshima, K. Makhoul, K. Maksimovic, P. Malde, S. Malik, S. Manca, G. Manousakis-Katsikakis, A. Margaroli, F. Marino, C. Marino, C. P. Martin, A. Martin, V. Martinez, M. Martinez-Ballarin, R. Mastrandrea, P. Mathis, M. Mattson, M. E. Mazzanti, P. McFarland, K. S. McIntyre, P. McNulty, R. Mehta, A. Mehtala, P. Menzione, A. Mesropian, C. Miao, T. Mietlicki, D. Miladinovic, N. Miller, R. Mills, C. Milnik, M. Mitra, A. Mitselmakher, G. Miyake, H. Moed, S. Moggi, N. Mondragon, M. N. Moon, C. S. Moore, R. Morello, M. J. Morlock, J. Fernandez, P. Movilla Mulmenstadt, J. Mukherjee, A. Muller, Th. Murat, P. Mussini, M. Nachtman, J. Nagai, Y. Naganoma, J. Nakamura, K. Nakano, I. Napier, A. Nett, J. Neu, C. Neubauer, M. S. Neubauer, S. Nielsen, J. Nodulman, L. Norman, M. Norniella, O. Nurse, E. Oakes, L. Oh, S. H. Oh, Y. D. Oksuzian, I. Okusawa, T. Orava, R. Osterberg, K. Griso, S. Pagan Pagliarone, C. Palencia, E. Papadimitriou, V. Papaikonomou, A. Paramanov, A. A. Parks, B. Pashapour, S. Patrick, J. Pauletta, G. Paulini, M. Paus, C. Peiffer, T. Pellett, D. E. Penzo, A. Phillips, T. J. Piacentino, G. Pianori, E. Pinera, L. Pitts, K. Plager, C. Pondrom, L. Potamianos, K. Poukhov, O. Prokoshin, F. Pronko, A. Ptohos, F. Pueschel, E. Punzi, G. Pursley, J. Rademacker, J. Rahaman, A. Ramakrishnan, V. Ranjan, N. Redondo, I. Renton, P. Renz, M. Rescigno, M. Richter, S. Rimondi, F. Ristori, L. Robson, A. Rodrigo, T. Rodriguez, T. Rogers, E. Rolli, S. Roser, R. Rossi, M. Rossin, R. Roy, P. Ruiz, A. Russ, J. Rusu, V. Rutherford, B. Saarikko, H. Safonov, A. Sakumoto, W. K. Santi, L. Sartori, L. Sato, K. Savoy-Navarro, A. Schlabach, P. Schmidt, A. Schmidt, E. E. Schmidt, M. A. Schmidt, M. P. Schmitt, M. Schwarz, T. Scodellaro, L. Scribano, A. Scuri, F. Sedov, A. Seidel, S. Seiya, Y. Semenov, A. Sexton-Kennedy, L. Sforza, F. Sfyrla, A. Shalhout, S. Z. Shears, T. Shepard, P. F. Shimojima, M. Shiraishi, S. Shochet, M. Shon, Y. Shreyber, I. Simonenko, A. Sinervo, P. Sisakyan, A. Slaughter, A. J. Slaunwhite, J. Sliwa, K. Smith, J. R. Snider, F. D. Snihur, R. Soha, A. Somalwar, S. Sorin, V. Squillacioti, P. Stanitzki, M. Denis, R. St. Stelzer, B. Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. Suh, J. S. Sukhanov, A. Suslov, I. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tang, J. Tecchio, M. Teng, P. K. Thom, J. Thome, J. Thompson, G. A. Thomson, E. Tipton, P. Ttito-Guzman, P. Tkaczyk, S. Toback, D. Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. Torre, S. Torretta, D. Totaro, P. Tourneur, S. Trovato, M. Tsai, S. -Y. Tu, Y. Turini, N. Ukegawa, F. Uozumi, S. van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Vidal, M. Vila, I. Vilar, R. Vogel, M. Volobouev, I. Volpi, G. Wagner, P. Wagner, R. G. Wagner, R. L. Wagner, W. Wagner-Kuhr, J. Wakisaka, T. Wallny, R. Wang, S. M. Warburton, A. Waters, D. Weinberger, M. Weinelt, J. Wester, W. C., III Whitehouse, B. Whiteson, D. Wicklund, A. B. Wicklund, E. Wilbur, S. Williams, G. Williams, H. H. Wilson, P. Winer, B. L. Wittich, P. Wolbers, S. Wolfe, C. Wolfe, H. Wright, T. Wu, X. Wuerthwein, F. Yagil, A. Yamamoto, K. Yamaoka, J. Yang, U. K. Yang, Y. C. Yao, W. M. Yeh, G. P. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. TI Measurement of the WW plus WZ Production Cross Section Using the lepton plus jets Final State at CDF II SO PHYSICAL REVIEW LETTERS LA English DT Article AB We report two complementary measurements of the WW + WZ cross section in the final state consisting of an electron or muon, missing transverse energy, and jets, performed using p (p) over bar collision data at root s = 1.96 TeV collected by the CDF II detector. The first method uses the dijet invariant mass distribution while the second more sensitive method uses matrix-element calculations. The result from the second method has a signal significance of 5.4 sigma and is the first observation of WW + WZ production using this signature. Combining the results gives sigma(WW+WZ) = 16.0 +/- 3.3 pb, in agreement with the standard model prediction. 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RI Scodellaro, Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan, zeynep/C-6660-2015; Lazzizzera, Ignazio/E-9678-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012; Muelmenstaedt, Johannes/K-2432-2015; Moon, Chang-Seong/J-3619-2014; Ivanov, Andrew/A-7982-2013; Ruiz, Alberto/E-4473-2011; Punzi, Giovanni/J-4947-2012; manca, giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Annovi, Alberto/G-6028-2012; Zeng, Yu/C-1438-2013; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014; Introzzi, Gianluca/K-2497-2015; Martinez Ballarin, Roberto/K-9209-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; OI Scodellaro, Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611; Lazzizzera, Ignazio/0000-0001-5092-7531; ciocci, maria agnese /0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Muelmenstaedt, Johannes/0000-0003-1105-6678; Moon, Chang-Seong/0000-0001-8229-7829; Ivanov, Andrew/0000-0002-9270-5643; Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052; Annovi, Alberto/0000-0002-4649-4398; Warburton, Andreas/0000-0002-2298-7315; Farrington, Sinead/0000-0001-5350-9271; Robson, Aidan/0000-0002-1659-8284; Gallinaro, Michele/0000-0003-1261-2277; Torre, Stefano/0000-0002-7565-0118; Turini, Nicola/0000-0002-9395-5230; Introzzi, Gianluca/0000-0002-1314-2580; Martinez Ballarin, Roberto/0000-0003-0588-6720; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli, Florencia/0000-0001-6361-2117; Osterberg, Kenneth/0000-0003-4807-0414; Hays, Chris/0000-0003-2371-9723 FU U.S. Department of Energy and National Science Foundation; Italian Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science and Technology of Japan; Natural Sciences and Engineering Research Council of Canada; National Science Council of the Republic of China; Swiss National Science Foundation; A.P. Sloan Foundation; Bundesministerium fur Bildung und Forschung, Germany; World Class University Program, the National Research Foundation of Korea; Science and Technology Facilities Council and the Royal Society, United Kingdom; Institut National de Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation for Basic Research; Ministerio de Ciencia e Innovacion, and Programa ConsoliderIngenio 2010, Spain; Slovak RD Agency; Academy of Finland FX We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium fur Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, United Kingdom; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovacion, and Programa ConsoliderIngenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland. NR 24 TC 10 Z9 10 U1 2 U2 14 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 101801 DI 10.1103/PhysRevLett.104.101801 PG 8 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500009 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D Datta, M Davies, T de Barbaro, P De Cecco, S Deisher, A De Lorenzo, G Dell'Orso, M Deluca, C Demortier, L Deng, J Deninno, M d'Errico, M Di Canto, A di Giovanni, GP Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Frank, MJ Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Garosi, P Gerberich, H Gerdes, D Gessler, A Giagu, S Giakoumopoulou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Giurgiu, G Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U da Costa, JG Gunay-Unalan, Z Haber, C Hahn, SR Halkiadakis, E Han, BY Han, JY Happacher, F Hara, K Hare, D Hare, M Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M Heinrich, J Herndon, M Heuser, J Hewamanage, S Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Hughes, RE Hurwitz, M Husemann, U Hussein, M Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A James, E Jang, D Jayatilaka, B Jeon, EJ Jha, MK Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Ketchum, W Keung, J Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V Kuhr, T Kulkarni, NP Kurata, M Kwang, S Laasanen, AT Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, E Lee, HS Lee, JS Lee, SW Leone, S Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, MS Martin, V Martinez, M Martinez-Ballarin, R Mastrandrea, P Mathis, M Mattson, ME Mazzanti, P McFarland, KS McIntyre, P McNulty, R Mehta, A Mehtala, P Menzione, A Mesropian, C Miao, T Mietlicki, D Miladinovic, N Miller, R Mills, C Milnik, M Mitra, A Mitselmakher, G Miyake, H Moed, S Moggi, N Mondragon, MN Moon, CS Moore, R Morello, MJ Morlock, J Fernandez, PM Mulmenstadt, J Mukherjee, A Muller, T Mumford, R Murat, P Mussini, M Nachtman, J Nagai, Y Naganoma, J Nakamura, K Nakano, I Napier, A Nett, J Neu, C Neubauer, MS Neubauer, S Nielsen, J Nodulman, L Norman, M Norniella, O Nurse, E Oakes, L Oh, SH Oh, YD Oksuzian, I Okusawa, T Orava, R Osterberg, K Griso, SP Pagliarone, C Palencia, E Papadimitriou, V Papaikonomou, A Paramanov, AA Parks, B Pashapour, S Patrick, J Pauletta, G Paulini, M Paus, C Peiffer, T Pellett, DE Penzo, A Phillips, TJ Piacentino, G Pianori, E Pinera, L Pitts, K Plager, C Pondrom, L Potamianos, K Poukhov, O Prokoshin, F Pronko, A Ptohos, F Pueschel, E Punzi, G Pursley, J Rademacker, J Rahaman, A Ramakrishnan, V Ranjan, N Redondo, I Renton, P Renz, M Rescigno, M Richter, S Rimondi, F Ristori, L Robson, A Rodrigo, T Rodriguez, T Rogers, E Rolli, S Roser, R Rossi, M Rossin, R Roy, P Ruiz, A Russ, J Rusu, V Rutherford, B Saarikko, H Safonov, A Sakumoto, WK Santi, L Sartori, L Sato, K Savoy-Navarro, A Schlabach, P Schmidt, A Schmidt, EE Schmidt, MA Schmidt, MP Schmitt, M Schwarz, T Scodellaro, L Scribano, A Scuri, F Sedov, A Seidel, S Seiya, Y Semenov, A Sexton-Kennedy, L Sforza, F Sfyrla, A Shalhout, SZ Shears, T Shepard, PF Shimojima, M Shiraishi, S Shochet, M Shon, Y Shreyber, I Simonenko, A Sinervo, P Sisakyan, A Slaughter, AJ Slaunwhite, J Sliwa, K Smith, JR Snider, FD Snihur, R Soha, A Somalwar, S Sorin, V Squillacioti, P Stanitzki, M St Denis, R Stelzer, B Stelzer-Chilton, O Stentz, D Strologas, J Strycker, GL Suh, JS Sukhanov, A Suslov, I Taffard, A Takashima, R Takeuchi, Y Tanaka, R Tang, J Tecchio, M Teng, PK Thom, J Thome, J Thompson, GA Thomson, E Tipton, P Ttito-Guzman, P Tkaczyk, S Toback, D Tokar, S Tollefson, K Tomura, T Tonelli, D Torre, S Torretta, D Totaro, P Tourneur, S Trovato, M Tsai, SY Tu, Y Turini, N Ukegawa, F Uozumi, S van Remortel, N Varganov, A Vataga, E Vazquez, F Velev, G Vellidis, C Vidal, M Vila, I Vilar, R Vogel, M Volobouev, I Volpi, G Wagner, P Wagner, RG Wagner, RL Wagner, W Wagner-Kuhr, J Wakisaka, T Wallny, R Wang, SM Warburton, A Waters, D Weinberger, M Weinelt, J Wester, WC Whitehouse, B Whiteson, D Wicklund, AB Wicklund, E Wilbur, S Williams, G Williams, HH Wilson, P Winer, BL Wittich, P Wolbers, S Wolfe, C Wolfe, H Wright, T Wu, X Wurthwein, F Yagil, A Yamamoto, K Yamaoka, J Yang, UK Yang, YC Yao, WM Yeh, GP Yi, K Yoh, J Yorita, K Yoshida, T Yu, GB Yu, I Yu, SS Yun, JC Zanetti, A Zeng, Y Zhang, X Zheng, Y Zucchelli, S AF Aaltonen, T. Adelman, J. Alvarez Gonzalez, B. Amerio, S. Amidei, D. Anastassov, A. Annovi, A. Antos, J. Apollinari, G. Apresyan, A. Arisawa, T. Artikov, A. Asaadi, J. Ashmanskas, W. Attal, A. Aurisano, A. Azfar, F. Badgett, W. Barbaro-Galtieri, A. Barnes, V. E. Barnett, B. A. Barria, P. Bartos, P. Bauer, G. Beauchemin, P. -H. Bedeschi, F. Beecher, D. Behari, S. Bellettini, G. Bellinger, J. Benjamin, D. Beretvas, A. Bhatti, A. Binkley, M. Bisello, D. Bizjak, I. Blair, R. E. Blocker, C. Blumenfeld, B. Bocci, A. Bodek, A. Boisvert, V. Bortoletto, D. Boudreau, J. Boveia, A. Brau, B. Bridgeman, A. Brigliadori, L. Bromberg, C. Brubaker, E. Budagov, J. Budd, H. S. Budd, S. Burkett, K. Busetto, G. Bussey, P. Buzatu, A. Byrum, K. L. Cabrera, S. Calancha, C. Camarda, S. Campanelli, M. Campbell, M. Canelli, F. Canepa, A. Carls, B. Carlsmith, D. Carosi, R. Carrillo, S. Carron, S. Casal, B. Casarsa, M. Castro, A. Catastini, P. Cauz, D. Cavaliere, V. Cavalli-Sforza, M. Cerri, A. Cerrito, L. Chang, S. H. Chen, Y. C. Chertok, M. Chiarelli, G. Chlachidze, G. Chlebana, F. Cho, K. Chokheli, D. Chou, J. P. Chung, K. Chung, W. H. Chung, Y. S. Chwalek, T. Ciobanu, C. I. Ciocci, M. A. Clark, A. Clark, D. Compostella, G. Convery, M. E. Conway, J. Corbo, M. Cordelli, M. Cox, C. A. Cox, D. J. Crescioli, F. Almenar, C. Cuenca Cuevas, J. Culbertson, R. Cully, J. C. Dagenhart, D. Datta, M. Davies, T. de Barbaro, P. De Cecco, S. Deisher, A. De Lorenzo, G. Dell'Orso, M. Deluca, C. Demortier, L. Deng, J. Deninno, M. d'Errico, M. Di Canto, A. di Giovanni, G. P. Di Ruzza, B. Dittmann, J. R. D'Onofrio, M. Donati, S. Dong, P. Dorigo, T. Dube, S. Ebina, K. Elagin, A. Erbacher, R. Errede, D. Errede, S. Ershaidat, N. Eusebi, R. Fang, H. C. Farrington, S. Fedorko, W. T. Feild, R. G. Feindt, M. Fernandez, J. P. Ferrazza, C. Field, R. Flanagan, G. Forrest, R. Frank, M. J. Franklin, M. Freeman, J. C. Furic, I. Gallinaro, M. Galyardt, J. Garberson, F. Garcia, J. E. Garfinkel, A. F. Garosi, P. Gerberich, H. Gerdes, D. Gessler, A. Giagu, S. Giakoumopoulou, V. Giannetti, P. Gibson, K. Gimmell, J. L. Ginsburg, C. M. Giokaris, N. Giordani, M. Giromini, P. Giunta, M. Giurgiu, G. Glagolev, V. Glenzinski, D. Gold, M. Goldschmidt, N. Golossanov, A. Gomez, G. Gomez-Ceballos, G. Goncharov, M. Gonzalez, O. Gorelov, I. Goshaw, A. T. Goulianos, K. Gresele, A. Grinstein, S. Grosso-Pilcher, C. Group, R. C. Grundler, U. da Costa, J. Guimaraes Gunay-Unalan, Z. Haber, C. Hahn, S. R. Halkiadakis, E. Han, B. -Y. Han, J. Y. Happacher, F. Hara, K. Hare, D. Hare, M. Harr, R. F. Hartz, M. Hatakeyama, K. Hays, C. Heck, M. Heinrich, J. Herndon, M. Heuser, J. Hewamanage, S. Hidas, D. Hill, C. S. Hirschbuehl, D. Hocker, A. Hou, S. Houlden, M. Hsu, S. -C. Hughes, R. E. Hurwitz, M. Husemann, U. Hussein, M. Huston, J. Incandela, J. Introzzi, G. Iori, M. Ivanov, A. James, E. Jang, D. Jayatilaka, B. Jeon, E. J. Jha, M. K. Jindariani, S. Johnson, W. Jones, M. Joo, K. K. Jun, S. Y. Jung, J. E. Junk, T. R. Kamon, T. Kar, D. Karchin, P. E. Kato, Y. Kephart, R. Ketchum, W. Keung, J. Khotilovich, V. Kilminster, B. Kim, D. H. Kim, H. S. Kim, H. W. Kim, J. E. Kim, M. J. Kim, S. B. Kim, S. H. Kim, Y. K. Kimura, N. Kirsch, L. Klimenko, S. Kondo, K. Kong, D. J. Konigsberg, J. Korytov, A. Kotwal, A. V. Kreps, M. Kroll, J. Krop, D. Krumnack, N. Kruse, M. Krutelyov, V. Kuhr, T. Kulkarni, N. P. Kurata, M. Kwang, S. Laasanen, A. T. Lami, S. Lammel, S. Lancaster, M. Lander, R. L. Lannon, K. Lath, A. Latino, G. Lazzizzera, I. LeCompte, T. Lee, E. Lee, H. S. Lee, J. S. Lee, S. W. Leone, S. Lewis, J. D. Lin, C. -J. Linacre, J. Lindgren, M. Lipeles, E. Lister, A. Litvintsev, D. O. Liu, C. Liu, T. Lockyer, N. S. Loginov, A. Lovas, L. Lucchesi, D. Lueck, J. Lujan, P. Lukens, P. Lungu, G. Lys, J. Lysak, R. MacQueen, D. Madrak, R. Maeshima, K. Makhoul, K. Maksimovic, P. Malde, S. Malik, S. Manca, G. Manousakis-Katsikakis, A. Margaroli, F. Marino, C. Marino, C. P. Martin, A. Martin, M. S. Martin, V. Martinez, M. Martinez-Ballarin, R. Mastrandrea, P. Mathis, M. Mattson, M. E. Mazzanti, P. McFarland, K. S. McIntyre, P. McNulty, R. Mehta, A. Mehtala, P. Menzione, A. Mesropian, C. Miao, T. Mietlicki, D. Miladinovic, N. Miller, R. Mills, C. Milnik, M. Mitra, A. Mitselmakher, G. Miyake, H. Moed, S. Moggi, N. Mondragon, M. N. Moon, C. S. Moore, R. Morello, M. J. Morlock, J. Fernandez, P. Movilla Mulmenstadt, J. Mukherjee, A. Muller, Th. Mumford, R. Murat, P. Mussini, M. Nachtman, J. Nagai, Y. Naganoma, J. Nakamura, K. Nakano, I. Napier, A. Nett, J. Neu, C. Neubauer, M. S. Neubauer, S. Nielsen, J. Nodulman, L. Norman, M. Norniella, O. Nurse, E. Oakes, L. Oh, S. H. Oh, Y. D. Oksuzian, I. Okusawa, T. Orava, R. Osterberg, K. Griso, S. Pagan Pagliarone, C. Palencia, E. Papadimitriou, V. Papaikonomou, A. Paramanov, A. A. Parks, B. Pashapour, S. Patrick, J. Pauletta, G. Paulini, M. Paus, C. Peiffer, T. Pellett, D. E. Penzo, A. Phillips, T. J. Piacentino, G. Pianori, E. Pinera, L. Pitts, K. Plager, C. Pondrom, L. Potamianos, K. Poukhov, O. Prokoshin, F. Pronko, A. Ptohos, F. Pueschel, E. Punzi, G. Pursley, J. Rademacker, J. Rahaman, A. Ramakrishnan, V. Ranjan, N. Redondo, I. Renton, P. Renz, M. Rescigno, M. Richter, S. Rimondi, F. Ristori, L. Robson, A. Rodrigo, T. Rodriguez, T. Rogers, E. Rolli, S. Roser, R. Rossi, M. Rossin, R. Roy, P. Ruiz, A. Russ, J. Rusu, V. Rutherford, B. Saarikko, H. Safonov, A. Sakumoto, W. K. Santi, L. Sartori, L. Sato, K. Savoy-Navarro, A. Schlabach, P. Schmidt, A. Schmidt, E. E. Schmidt, M. A. Schmidt, M. P. Schmitt, M. Schwarz, T. Scodellaro, L. Scribano, A. Scuri, F. Sedov, A. Seidel, S. Seiya, Y. Semenov, A. Sexton-Kennedy, L. Sforza, F. Sfyrla, A. Shalhout, S. Z. Shears, T. Shepard, P. F. Shimojima, M. Shiraishi, S. Shochet, M. Shon, Y. Shreyber, I. Simonenko, A. Sinervo, P. Sisakyan, A. Slaughter, A. J. Slaunwhite, J. Sliwa, K. Smith, J. R. Snider, F. D. Snihur, R. Soha, A. Somalwar, S. Sorin, V. Squillacioti, P. Stanitzki, M. St. Denis, R. Stelzer, B. Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. Suh, J. S. Sukhanov, A. Suslov, I. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tang, J. Tecchio, M. Teng, P. K. Thom, J. Thome, J. Thompson, G. A. Thomson, E. Tipton, P. Ttito-Guzman, P. Tkaczyk, S. Toback, D. Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. Torre, S. Torretta, D. Totaro, P. Tourneur, S. Trovato, M. Tsai, S. -Y. Tu, Y. Turini, N. Ukegawa, F. Uozumi, S. van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Vidal, M. Vila, I. Vilar, R. Vogel, M. Volobouev, I. Volpi, G. Wagner, P. Wagner, R. G. Wagner, R. L. Wagner, W. Wagner-Kuhr, J. Wakisaka, T. Wallny, R. Wang, S. M. Warburton, A. Waters, D. Weinberger, M. Weinelt, J. Wester, W. C., III Whitehouse, B. Whiteson, D. Wicklund, A. B. Wicklund, E. Wilbur, S. Williams, G. Williams, H. H. Wilson, P. Winer, B. L. Wittich, P. Wolbers, S. Wolfe, C. Wolfe, H. Wright, T. Wu, X. Wuerthwein, F. Yagil, A. Yamamoto, K. Yamaoka, J. Yang, U. K. Yang, Y. C. Yao, W. M. Yeh, G. P. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. TI Measurement of the Lambda(0)(b) Lifetime in Lambda(0)(b) -> Lambda(+)(c)pi(-) Decays in p(p)over-bar Collisions at root s=1.96 TeV SO PHYSICAL REVIEW LETTERS LA English DT Article ID PARTICLE PHYSICS; CDF; UPGRADE; BARYON AB We report a measurement of the lifetime of the Lambda(0)(b) baryon in decays to the Lambda(+)(c)pi(-) final state in a sample corresponding to 1.1 fb(-1) collected in p (p) over bar collisions at root s = 1.96 TeV by the CDF II detector at the Tevatron collider. Using a sample of about 3000 fully reconstructed Lambda(0)(b) events we measure tau(Lambda(0)(b) ) = 1.401 +/- 0.046(stat) +/- 0.035(syst) ps (corresponding to c tau(Lambda(0)(b)) = 420.1 +/- 13.7(stat) +/- 10.6(syst) mu m, where c is the speed of light). The ratio of this result and the world average B-0 lifetime yields tau(Lambda(0)(b))/tau(B-0) = 0.918 +/- 0.038 (stat) and (syst), in good agreement with recent theoretical predictions. C1 [Aaltonen, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; van Remortel, N.] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland. [Chen, Y. C.; Hou, S.; Mitra, A.; Teng, P. K.; Tsai, S. -Y.; Wang, S. M.] Acad Sinica, Inst Phys, Taipei 11529, Taiwan. [Blair, R. E.; Byrum, K. L.; LeCompte, T.; Nodulman, L.; Paramanov, A. A.; Wagner, R. G.; Wicklund, A. B.] Argonne Natl Lab, Argonne, IL 60439 USA. [Giakoumopoulou, V.; Giokaris, N.; Manousakis-Katsikakis, A.; Vellidis, C.] Univ Athens, GR-15771 Athens, Greece. [Attal, A.; Camarda, S.; Cavalli-Sforza, M.; De Lorenzo, G.; Deluca, C.; D'Onofrio, M.; Grinstein, S.; Martinez, M.; Sorin, V.] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain. [Dittmann, J. R.; Frank, M. 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RI Introzzi, Gianluca/K-2497-2015; Gorelov, Igor/J-9010-2015; Prokoshin, Fedor/E-2795-2012; Canelli, Florencia/O-9693-2016; Moon, Chang-Seong/J-3619-2014; Scodellaro, Luca/K-9091-2014; Grinstein, Sebastian/N-3988-2014; Paulini, Manfred/N-7794-2014; Russ, James/P-3092-2014; unalan, zeynep/C-6660-2015; Cabrera Urban, Susana/H-1376-2015; Garcia, Jose /H-6339-2015; ciocci, maria agnese /I-2153-2015; Cavalli-Sforza, Matteo/H-7102-2015; Chiarelli, Giorgio/E-8953-2012; Muelmenstaedt, Johannes/K-2432-2015; Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; manca, giulia/I-9264-2012; Amerio, Silvia/J-4605-2012; Punzi, Giovanni/J-4947-2012; Zeng, Yu/C-1438-2013; Annovi, Alberto/G-6028-2012; Ivanov, Andrew/A-7982-2013; Warburton, Andreas/N-8028-2013; Kim, Soo-Bong/B-7061-2014; Lysak, Roman/H-2995-2014 OI Introzzi, Gianluca/0000-0002-1314-2580; Gorelov, Igor/0000-0001-5570-0133; Prokoshin, Fedor/0000-0001-6389-5399; Canelli, Florencia/0000-0001-6361-2117; Moon, Chang-Seong/0000-0001-8229-7829; Scodellaro, Luca/0000-0002-4974-8330; Grinstein, Sebastian/0000-0002-6460-8694; Paulini, Manfred/0000-0002-6714-5787; Russ, James/0000-0001-9856-9155; unalan, zeynep/0000-0003-2570-7611; ciocci, maria agnese /0000-0003-0002-5462; Chiarelli, Giorgio/0000-0001-9851-4816; Muelmenstaedt, Johannes/0000-0003-1105-6678; Ruiz, Alberto/0000-0002-3639-0368; Punzi, Giovanni/0000-0002-8346-9052; Annovi, Alberto/0000-0002-4649-4398; Ivanov, Andrew/0000-0002-9270-5643; Warburton, Andreas/0000-0002-2298-7315; FU U.S. Department of Energy and National Science Foundation; Italian Istituto Nazionale di Fisica Nucleare; Ministry of Education, Culture, Sports, Science and Technology of Japan; Natural Sciences and Engineering Research Council of Canada; National Science Council of the Republic of China; Swiss National Science Foundation; A.P. Sloan Foundation; Bundesministerium fur Bildung und Forschung, Germany; National Research Foundation of Korea; Science and Technology Facilities Council and the Royal Society, UK; Institut National de Physique Nucleaire et Physique des Particules/CNRS; Russian Foundation for Basic Research; Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain; Slovak RD Agency; Academy of Finland FX We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium fur Bildung und Forschung, Germany; the World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, UK; the Institut National de Physique Nucleaire et Physique des Particules/CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; and the Academy of Finland. NR 22 TC 26 Z9 26 U1 1 U2 14 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 EI 1079-7114 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 102002 DI 10.1103/PhysRevLett.104.102002 PG 8 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500011 PM 20366415 ER PT J AU Elsen, A Murphy, BM Ocko, BM Tamam, L Deutsch, M Kuzmenko, I Magnussen, OM AF Elsen, A. Murphy, B. M. Ocko, B. M. Tamam, L. Deutsch, M. Kuzmenko, I. Magnussen, O. M. TI Surface Layering at the Mercury-Electrolyte Interface SO PHYSICAL REVIEW LETTERS LA English DT Article ID X-RAY REFLECTIVITY; CAPILLARY WAVES; LIQUID MERCURY; METALS AB X-ray reflectometry reveals atomic layering at a liquid-liquid interface-mercury in a 0.01 M NaF solution. The interface width exceeds capillary wave theory predictions and displays an anomalous dependence on the voltage applied across it, displaying a minimum positive of the potential of zero charge. The latter is explained by electrocapillary effects and an additional intrinsic broadening of the interface profile, tentatively assigned to polarization of the conduction electrons due to the electric field of the electrochemical double layer at the interface. C1 [Elsen, A.; Murphy, B. M.; Magnussen, O. M.] Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany. [Ocko, B. M.] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA. [Tamam, L.; Deutsch, M.] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel. [Tamam, L.; Deutsch, M.] Bar Ilan Univ, Inst Nanotechnol & Adv Mat, IL-52900 Ramat Gan, Israel. [Kuzmenko, I.] Argonne Natl Lab, Adv Photon Source, CMC CAT, Argonne, IL 60439 USA. RP Elsen, A (reprint author), Univ Kiel, Inst Expt & Appl Phys, Olshaussenstr 40, D-24098 Kiel, Germany. EM murphy@physik.uni-kiel.de FU BMBF [05KS7FK3]; USA-Israel BSF, Jerusalem; DOE [DE-AC02-76CH0016, W-31-109-Eng-38] FX We thank BMBF ( project 05KS7FK3) and USA-Israel BSF, Jerusalem for funding. BNL and APS are supported by DOE contracts DE-AC02-76CH0016 and W-31-109-Eng-38, respectively. NR 22 TC 21 Z9 21 U1 0 U2 11 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 105501 DI 10.1103/PhysRevLett.104.105501 PG 4 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500030 PM 20366434 ER PT J AU Hofmann, T Tasinkevych, M Checco, A Dobisz, E Dietrich, S Ocko, BM AF Hofmann, T. Tasinkevych, M. Checco, A. Dobisz, E. Dietrich, S. Ocko, B. M. TI Wetting of Nanopatterned Grooved Surfaces SO PHYSICAL REVIEW LETTERS LA English DT Article AB The wetting by perfluoromethylcyclohexane of a well-defined silicon grating with a channel width of 16 nm has been studied using transmission small angle x-ray scattering. Prefilling, capillary filling, and postfilling wetting regimes have been identified. A detailed comparison of the data with theory reveals the importance of long-ranged substrate-fluid and fluid-fluid interactions for determining the wetting behavior on these length scales, especially at the onset of capillary condensation and in the prefilling regime. C1 [Hofmann, T.; Checco, A.; Ocko, B. M.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Tasinkevych, M.; Dietrich, S.] Max Planck Inst Met Res, D-70569 Stuttgart, Germany. [Tasinkevych, M.; Dietrich, S.] Univ Stuttgart, Inst Theoret & Angew Phys, D-70569 Stuttgart, Germany. [Dobisz, E.] Hitachi San Jose Res Ctr, San Jose, CA 95135 USA. RP Hofmann, T (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. RI Tasinkevych, Mykola/I-5134-2015 OI Tasinkevych, Mykola/0000-0001-6689-1844 FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-AC02-76CH0016] FX Work at BNL is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Grant No. DE-AC02-76CH0016. We thank Lin Yang and Elaine DiMasi for their assistance. NR 18 TC 30 Z9 30 U1 2 U2 20 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 106102 DI 10.1103/PhysRevLett.104.106102 PG 4 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500034 PM 20366438 ER PT J AU Ivankin, A Kuzmenko, I Gidalevitz, D AF Ivankin, Andrey Kuzmenko, Ivan Gidalevitz, David TI Cholesterol-Phospholipid Interactions: New Insights from Surface X-Ray Scattering Data SO PHYSICAL REVIEW LETTERS LA English DT Article ID LIPID RAFTS; MEMBRANES; REFLECTIVITY; MONOLAYERS; BILAYERS AB We report a structural study of cholesterol-DPPC (1,2-dipalmitoyl-sn-glycero-3-phophocholine) monolayers using x-ray reflectivity and grazing incidence x-ray diffraction. Reflectivity reveals that the vertical position of cholesterol relative to phospholipids strongly depends on its mole fraction (chi(CHOL)). Moreover, we find that at a broad range of chi(CHOL) cholesterol and DPPC form alloylike mixed domains of short-range order and the same stoichiometry as that of the film. Based on the data presented, we propose a new model of cholesterol-phospholipid organization in mixed monolayers. C1 [Ivankin, Andrey; Gidalevitz, David] IIT, Ctr Mol Study Condensed Soft Matter CoSM, Chicago, IL 60616 USA. [Ivankin, Andrey; Gidalevitz, David] IIT, Div Phys, BCPS Dept, Chicago, IL 60616 USA. [Kuzmenko, Ivan] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Gidalevitz, D (reprint author), IIT, Ctr Mol Study Condensed Soft Matter CoSM, 3440 S Dearborn St, Chicago, IL 60616 USA. EM gidalevitz@iit.edu RI Gidalevitz, David/D-6717-2012 FU NIH [R01 AI073892]; ICDD; DOE [W-31-109-Eng-38] FX This research was supported by NIH R01 AI073892 grant. A. I. was partially supported by the ICDD. We are indebted to Steve Danauskas and Ka Yee C. Lee for their help with the Langmuir trough setup and software development. We thank Tom Irving, Joseph Orgel, Larry Scott, and Jay Schieber who read the manuscript for their comments. Use of the APS was supported by DOE under Contract No. W-31-109-Eng-38. NR 22 TC 41 Z9 41 U1 3 U2 29 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 108101 DI 10.1103/PhysRevLett.104.108101 PG 4 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500050 PM 20366454 ER PT J AU Malace, SP Kahn, Y Melnitchouk, W Keppel, CE AF Malace, S. P. Kahn, Y. Melnitchouk, W. Keppel, C. E. TI Confirmation of Quark-Hadron Duality in the Neutron F-2 Structure Function SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRON-SCATTERING; LARGE-X AB We apply a recently developed technique to extract for the first time the neutron F-2(n) structure function from inclusive proton and deuteron data in the nucleon resonance region, and test the validity of quark-hadron duality in the neutron. We establish the accuracy of duality in the low-lying neutron resonance regions over a range of Q(2), and compare with the corresponding results on the proton and with theoretical expectations. The confirmation of duality in both the neutron and proton opens the possibility of using resonance region data to constrain parton distributions at large x. C1 [Malace, S. P.] Univ S Carolina, Columbia, SC 29208 USA. [Kahn, Y.] Northwestern Univ, Evanston, IL 60208 USA. [Kahn, Y.; Melnitchouk, W.; Keppel, C. E.] Jefferson Lab, Newport News, VA 23606 USA. [Keppel, C. E.] Hampton Univ, Hampton, VA 23668 USA. RP Malace, SP (reprint author), Univ S Carolina, Columbia, SC 29208 USA. FU DOE [DE-AC05-06OR23177]; NSF [PHY-0856010] FX We thank S. Alekhin, S. Kulagin, and G. Watt for helpful communications. This work was supported by the DOE Contract No. DE-AC05-06OR23177, under which Jefferson Science Associates, LLC operates Jefferson Lab, and by NSF Grant No. PHY-0856010. NR 33 TC 14 Z9 14 U1 0 U2 1 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 102001 DI 10.1103/PhysRevLett.104.102001 PG 4 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500010 PM 20366414 ER PT J AU Neumann, N Hant, D Schmidt, LPH Titze, J Jahnke, T Czasch, A Schoffler, MS Kreidi, K Jagutzki, O Schmidt-Bocking, H Dorner, R AF Neumann, N. Hant, D. Schmidt, L. Ph. H. Titze, J. Jahnke, T. Czasch, A. Schoeffler, M. S. Kreidi, K. Jagutzki, O. Schmidt-Boecking, H. Doerner, R. TI Fragmentation Dynamics of CO23+ Investigated by Multiple Electron Capture in Collisions with Slow Highly Charged Ions SO PHYSICAL REVIEW LETTERS LA English DT Article ID INTENSE LASER FIELDS; DISSOCIATIVE IONIZATION; MOLECULE FRAGMENTATION; MOMENTUM SPECTROSCOPY; COULOMB EXPLOSION; RECOIL-ION; IMPACT; PHOTOIONIZATION; SINGLE; SYSTEM AB Fragmentation of highly charged molecular ions or clusters consisting of more than two atoms can proceed in a one step synchronous manner where all bonds break simultaneously or sequentially by emitting one ion after the other. We separated these decay channels for the fragmentation of CO23+ ions by measuring the momenta of the ionic fragments. We show that the total energy deposited in the molecular ion is a control parameter which switches between three distinct fragmentation pathways: the sequential fragmentation in which the emission of an O+ ion leaves a rotating CO2+ ion behind that fragments after a time delay, the Coulomb explosion and an in-between fragmentation-the asynchronous dissociation. These mechanisms are directly distinguishable in Dalitz plots and Newton diagrams of the fragment momenta. The CO23+ ions are produced by multiple electron capture in collisions with 3.2 keV/u Ar8+ ions. C1 [Neumann, N.; Hant, D.; Schmidt, L. Ph. H.; Titze, J.; Jahnke, T.; Czasch, A.; Schoeffler, M. S.; Kreidi, K.; Jagutzki, O.; Schmidt-Boecking, H.; Doerner, R.] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany. [Schoeffler, M. S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Neumann, N (reprint author), Goethe Univ Frankfurt, Inst Kernphys, Max von Laue Str 1, D-60438 Frankfurt, Germany. EM doerner@atom.uni-frankfurt.de RI Doerner, Reinhard/A-5340-2008; Schoeffler, Markus/B-6261-2008 OI Doerner, Reinhard/0000-0002-3728-4268; Schoeffler, Markus/0000-0001-9214-6848 NR 27 TC 51 Z9 51 U1 2 U2 18 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 103201 DI 10.1103/PhysRevLett.104.103201 PG 4 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500017 PM 20366421 ER PT J AU Ross, JS Glenzer, SH Palastro, JP Pollock, BB Price, D Divol, L Tynan, GR Froula, DH AF Ross, J. S. Glenzer, S. H. Palastro, J. P. Pollock, B. B. Price, D. Divol, L. Tynan, G. R. Froula, D. H. TI Observation of Relativistic Effects in Collective Thomson Scattering SO PHYSICAL REVIEW LETTERS LA English DT Article ID STIMULATED BRILLOUIN-SCATTERING; PLASMAS; TEMPERATURE; GAS AB We observe relativistic modifications to the Thomson scattering spectrum in a traditionally classical regime: nu(osc)/c eE(0)/cm omega(0) << 1 and T(e) < 1 keV. The modifications result from scattering off electron-plasma fluctuations with relativistic phase velocities. Normalized phase velocities nu/c between 0.03 and 0.12 have been achieved in a N(2) gas-jet plasma by varying the plasma density from 3 x 10(18) cm(-3) to 7 x 10(19) cm(-3) and electron temperature between 85 and 700 eV. For these conditions, the complete temporally resolved Thomson scattering spectrum including the electron and ion features has been measured. A relativistic treatment of the Thomson scattering form factor shows excellent agreement with the experimental data. C1 [Ross, J. S.; Glenzer, S. H.; Palastro, J. P.; Pollock, B. B.; Price, D.; Divol, L.; Froula, D. H.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Ross, J. S.; Pollock, B. B.; Tynan, G. R.] Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA. RP Ross, JS (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. FU U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Laboratory Directed Research and Development Program [08-LW-070] FX I would like to acknowledge contributions from J. Sheffield and C. Clayton. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344 and was partially funded by the Laboratory Directed Research and Development Program under project tracking code 08-LW-070. NR 22 TC 14 Z9 14 U1 0 U2 5 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 12 PY 2010 VL 104 IS 10 AR 105001 DI 10.1103/PhysRevLett.104.105001 PG 4 WC Physics, Multidisciplinary SC Physics GA 568SR UT WOS:000275543500029 PM 20366433 ER PT J AU Srivastava, S Santos, A Critchley, K Kim, KS Podsiadlo, P Sun, K Lee, J Xu, CL Lilly, GD Glotzer, SC Kotov, NA AF Srivastava, Sudhanshu Santos, Aaron Critchley, Kevin Kim, Ki-Sub Podsiadlo, Paul Sun, Kai Lee, Jaebeom Xu, Chuanlai Lilly, G. Daniel Glotzer, Sharon C. Kotov, Nicholas A. TI Light-Controlled Self-Assembly of Semiconductor Nanoparticles into Twisted Ribbons SO SCIENCE LA English DT Article ID CDTE NANOCRYSTALS; NANOWIRES; PHOTOLUMINESCENCE; MECHANISM; SHEETS; GROWTH; FILMS AB The collective properties of nanoparticles manifest in their ability to self-organize into complex microscale structures. Slow oxidation of tellurium ions in cadmium telluride (CdTe) nanoparticles results in the assembly of 1- to 4-micrometer-long flat ribbons made of several layers of individual cadmium sulfide (CdS)/CdTe nanocrystals. Twisting of the ribbons with an equal distribution of left and right helices was induced by illumination with visible light. The pitch lengths (250 to 1500 nanometers) varied with illumination dose, and the twisting was associated with the relief of mechanical shear stress in assembled ribbons caused by photooxidation of CdS. Unusual shapes of multiparticle assemblies, such as ellipsoidal clouds, dog-bone agglomerates, and ribbon bunches, were observed as intermediate stages. Computer simulations revealed that the balance between attraction and electrostatic repulsion determines the resulting geometry and dimensionality of the nanoparticle assemblies. C1 [Srivastava, Sudhanshu; Santos, Aaron; Critchley, Kevin; Kim, Ki-Sub; Podsiadlo, Paul; Lee, Jaebeom; Xu, Chuanlai; Lilly, G. Daniel; Glotzer, Sharon C.; Kotov, Nicholas A.] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA. [Critchley, Kevin] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Kim, Ki-Sub] Chungju Natl Univ, Dept Chem & Biol Engn, Chungju 380702, Chungbuk, South Korea. [Podsiadlo, Paul] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [Sun, Kai; Kotov, Nicholas A.] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA. [Glotzer, Sharon C.; Kotov, Nicholas A.] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA. [Lee, Jaebeom; Kotov, Nicholas A.] Pusan Natl Univ, Coll Nanosci & Nanoengn, Dept Nanomed Engn, Miryang 627706, South Korea. [Xu, Chuanlai] Jiangnan Univ, Sch Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China. RP Glotzer, SC (reprint author), Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA. EM sglotzer@umich.edu; kotov@umich.edu OI Critchley, Kevin/0000-0002-0112-8626; Kotov, Nicholas/0000-0002-6864-5804 FU Air Force Office of Scientific Research [FA9550-06-1-0337]; Fannie and John Hertz Foundation; Ministry of Education, Science and Technology [R33-2008-000-10021-0]; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-06CH11357]; Argonne National Laboratory; NSF [DMR-9871177, DMR-0320740]; J. S. McDonnell Foundation for the development of BUBBA; Marie Curie Actions [MOIF-CT-2006-039636] FX We acknowledge joint financial support by the Air Force Office of Scientific Research under Multiuniversity Research Initiative grant FA9550-06-1-0337. P. P. thanks the Fannie and John Hertz Foundation for support of his work through a graduate fellowship. This research was supported by the World Class University program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology (grant R33-2008-000-10021-0). We thank J. Kim (Univ. of Michigan) for helpful suggestions and discussions and W. Chen (JiangNan University) for assistance with some TEM data. P. P.'s work at the Center for Nanoscale Materials was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under contract no. DE-AC02-06CH11357. P. P. acknowledges the support of the Willard Frank Libby postdoctoral fellowship from Argonne National Laboratory. The transmission electron microscope used in the study was supported by NSF grant DMR-9871177, and the scanning electron microscope used was supported by NSF grant DMR-0320740. S. C. G. and A. S. acknowledge the support of the J. S. McDonnell Foundation for the development of BUBBA. K. C. thanks Marie Curie Actions MOIF-CT-2006-039636 for financial support. NR 25 TC 203 Z9 205 U1 43 U2 310 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 12 PY 2010 VL 327 IS 5971 BP 1355 EP 1359 DI 10.1126/science.1177218 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 567CA UT WOS:000275418700035 PM 20150443 ER PT J AU Salaita, K Nair, PM Petit, RS Neve, RM Das, D Gray, JW Groves, JT AF Salaita, Khalid Nair, Pradeep M. Petit, Rebecca S. Neve, Richard M. Das, Debopriya Gray, Joe W. Groves, Jay T. TI Restriction of Receptor Movement Alters Cellular Response: Physical Force Sensing by EphA2 SO SCIENCE LA English DT Article ID IMMUNOLOGICAL SYNAPSE; BREAST-CANCER; LIGANDS; REORGANIZATION; RECOGNITION; MECHANISMS; MICROSCOPY; SUBSTRATE; EPHRIN-A5; MIGRATION AB Activation of the EphA2 receptor tyrosine kinase by ephrin-A1 ligands presented on apposed cell surfaces plays important roles in development and exhibits poorly understood functional alterations in cancer. We reconstituted this intermembrane signaling geometry between live EphA2-expressing human breast cancer cells and supported membranes displaying laterally mobile ephrin-A1. Receptor-ligand binding, clustering, and subsequent lateral transport within this junction were observed. EphA2 transport can be blocked by physical barriers nanofabricated onto the underlying substrate. This physical reorganization of EphA2 alters the cellular response to ephrin-A1, as observed by changes in cytoskeleton morphology and recruitment of a disintegrin and metalloprotease 10. Quantitative analysis of receptor-ligand spatial organization across a library of 26 mammary epithelial cell lines reveals characteristic differences that strongly correlate with invasion potential. These observations reveal a mechanism for spatio-mechanical regulation of EphA2 signaling pathways. C1 [Salaita, Khalid; Nair, Pradeep M.; Petit, Rebecca S.; Groves, Jay T.] Univ Calif Berkeley, Dept Chem, Howard Hughes Med Inst, Berkeley, CA 94720 USA. [Salaita, Khalid; Nair, Pradeep M.; Petit, Rebecca S.; Groves, Jay T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Salaita, Khalid; Nair, Pradeep M.; Petit, Rebecca S.; Groves, Jay T.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Neve, Richard M.; Das, Debopriya; Gray, Joe W.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. [Gray, Joe W.] Univ Calif San Francisco, Dept Lab Med & Radiat Oncol, San Francisco, CA 94143 USA. [Groves, Jay T.] Natl Univ Singapore, Res Ctr Excellence Mechanobiol, Singapore 117543, Singapore. RP Groves, JT (reprint author), Univ Calif Berkeley, Dept Chem, Howard Hughes Med Inst, Berkeley, CA 94720 USA. EM jtgroves@lbl.gov FU Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division; Materials Sciences and Engineering Division; U.S. Department of Energy (DOE) [DE-AC0205CH11231]; Office of Science, Office of Basic Energy Sciences, Scientific User Facilities Division, of the U.S. DOE [DE-AC02-05CH11231]; U.S. Army Medical Research Acquisition Activity [BC076701, W81XWH-08-1-0677]; National Cancer Institute (NCI) [U54 CA143836]; Office of Science, Office of Biological and Environmental Research, of the DOE [DE-AC02-05CH11231]; NIH [U54 CA 112970]; NCI [P50 CA 58207] FX We thank N. Bayani for assistance in performing Western blotting, A. Smoligovets and C.-H. Yu for performing transfection and imaging with EGFP-actin-expressing MDA-MB-231 cells, and A. Bershadsky for helpful discussions. This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division (K. S., P. M. N.; hybrid synthetic-live cell interfaces) and the Materials Sciences and Engineering Division (R. S. P.; supported membrane substrates) of the U.S. Department of Energy (DOE) under contract no. DE-AC0205CH11231. Patterned substrate fabrication was performed, in part, at the Molecular Foundry, Lawrence Berkeley National Laboratory (LBNL), and was supported by the Office of Science, Office of Basic Energy Sciences, Scientific User Facilities Division, of the U.S. DOE under contract no. DE-AC02-05CH11231. This work was also supported by the Laboratory Directed Research and Development Program of LBNL under U.S. DOE contract no. DE-AC02-05CH11231. Seed support for biomedical aspects of this work was provided by the U.S. Department of Defense Breast Cancer Research Program Concept Award BC076701 under U.S. Army Medical Research Acquisition Activity no. W81XWH-08-1-0677, with follow-on support provided by Award U54 CA143836 from the National Cancer Institute (NCI) beginning in 2009. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NCI or the NIH. J. W. G. acknowledges support from the Director, Office of Science, Office of Biological and Environmental Research, of the DOE under conract no. DE-AC02-05CH11231; the NIH; NCI grant P50 CA 58207; and the NIH NCI Integrative Cancer Biology Program grant number U54 CA 112970 to J. W. G. (bioinformatics and cell lines). The Regents of the University of California have filed a related patent application through LBNL. NR 37 TC 170 Z9 171 U1 4 U2 54 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 12 PY 2010 VL 327 IS 5971 BP 1380 EP 1385 DI 10.1126/science.1181729 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 567CA UT WOS:000275418700042 PM 20223987 ER PT J AU Jensen, LMR Sanishvili, R Davidson, VL Wilmot, CM AF Jensen, Lyndal M. R. Sanishvili, Ruslan Davidson, Victor L. Wilmot, Carrie M. TI In Crystallo Posttranslational Modification Within a MauG/Pre-Methylamine Dehydrogenase Complex SO SCIENCE LA English DT Article ID TRYPTOPHAN TRYPTOPHYLQUINONE BIOSYNTHESIS; OXYGEN ACTIVATION; COFACTOR; PEROXIDASES; BIOGENESIS; ENZYMOLOGY; MECHANISM AB MauG is a diheme enzyme responsible for the posttranslational modification of two tryptophan residues to form the tryptophan tryptophylquinone (TTQ) cofactor of methylamine dehydrogenase (MADH). MauG converts preMADH, containing monohydroxylated beta Trp(57), to fully functional MADH by catalyzing the insertion of a second oxygen atom into the indole ring and covalently linking beta Trp(57) to beta Trp(108). We have solved the x-ray crystal structure of MauG complexed with preMADH to 2.1 angstroms. The c-type heme irons and the nascent TTQ site are separated by long distances over which electron transfer must occur to achieve catalysis. In addition, one of the hemes has an atypical His-Tyr axial ligation. The crystalline protein complex is catalytically competent; upon addition of hydrogen peroxide, MauG-dependent TTQ synthesis occurs. C1 [Jensen, Lyndal M. R.; Wilmot, Carrie M.] Univ Minnesota, Dept Biochem Mol Biol & Biophys, Minneapolis, MN 55455 USA. [Sanishvili, Ruslan] Argonne Natl Lab, Biosci Div, Collaborat Access Team, Gen Med Inst, Argonne, IL 60439 USA. [Sanishvili, Ruslan] Argonne Natl Lab, Biosci Div, Collaborat Access Team, Inst Canc, Argonne, IL 60439 USA. [Davidson, Victor L.] Univ Mississippi, Med Ctr, Dept Biochem, Jackson, MS 39216 USA. RP Wilmot, CM (reprint author), Univ Minnesota, Dept Biochem Mol Biol & Biophys, Minneapolis, MN 55455 USA. EM wilmo004@umn.edu OI Davidson, Victor/0000-0002-1966-7302 FU NIH [GM66569, GM41574]; Minnesota Partnership for Biotechnology and Medical Genomics [SPAP-05-0013-P-FY06]; National Cancer Institute [Y1-CO-1020]; National Institute of General Medical Sciences [Y1-GM-1104]; U.S. Department of Energy, Basic Energy Sciences, Office of Science [DE-AC02-06CH11357] FX Supported by NIH grants GM66569 (C. M. W.) and GM41574 (V. L. D.) and Minnesota Partnership for Biotechnology and Medical Genomics grant SPAP-05-0013-P-FY06. Computer resources were provided by the Basic Sciences Computing Laboratory of the University of Minnesota Supercomputing Institute, and we thank C. Ergenekan for his support. X-ray data were collected at the Kahlert Structural Biology Laboratory (KSBL) at the University of Minnesota and GM/CA-CAT at the Advanced Photon Source (APS), Argonne National Laboratory, Argonne, IL. GM/CA-CAT is funded by National Cancer Institute grant Y1-CO-1020 and National Institute of General Medical Sciences grant Y1-GM-1104. Use of the Advanced Photon Source was supported by the U.S. Department of Energy, Basic Energy Sciences, Office of Science, under contract DE-AC02-06CH11357. We thank E. Hoeffner for KSBL support and the staff at Sector 23, APS, for their support, especially M. Becker, S. Corcoran, V. Nagarajan, and D. Yoder. We thank S. Shin for performing the experiment shown in fig. S4. Coordinates and structure factors have been deposited in the Protein Data Bank with acquisition codes 3L4M (MauG-preMADH complex) and 3L4O (MauG-preMADH complex treated with H2O2). NR 19 TC 67 Z9 69 U1 0 U2 9 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 12 PY 2010 VL 327 IS 5971 BP 1392 EP 1394 DI 10.1126/science.1182492 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 567CA UT WOS:000275418700045 PM 20223990 ER PT J AU Liu, J Guo, XH Mohandas, N Chasis, JA An, XL AF Liu, Jing Guo, Xinhua Mohandas, Narla Chasis, Joel A. An, Xiuli TI Membrane remodeling during reticulocyte maturation SO BLOOD LA English DT Article ID BLOOD-CELL MEMBRANE; ERYTHROCYTE-MEMBRANE; VOLUME CHANGES; IN-VITRO; BAND 4.1; SPECTRIN; STABILITY; ERYTHROPOIESIS; CYTOSKELETON; MODULATION AB The transition of reticulocytes into erythrocytes is accompanied by extensive changes in the structure and properties of the plasma membrane. These changes include an increase in shear resistance, loss of surface area, and acquisition of a biconcave shape. The processes by which these changes are effected have remained largely undefined. Here we examine how the expression of 30 distinct membrane proteins and their interactions change during murine reticulocyte maturation. We show that tubulin and cytosolic actin are lost, whereas the membrane content of myosin, tropomyosin, intercellular adhesion molecule-4, glucose transporter-4, Na-K-ATPase, sodium/hydrogen exchanger 1, glycophorin A, CD47, Duffy, and Kell is reduced. The degradation of tubulin and actin is, at least in part, through the ubiquitin-proteasome degradation pathway. In regard to the protein-protein interactions, the formation of membrane-associated spectrin tetramers from dimers is unperturbed, whereas the interactions responsible for the formation of the membrane-skeletal junctions are weaker in reticulocytes, as is the attachment of transmembrane proteins to these structures. This weakness, in part, results from the elevated phosphorylation of 4.1R in reticulocytes, which leads to a decrease in shear resistance by reducing its interaction with spectrin and actin. These observations begin to unravel the mechanistic basis of crucial changes accompanying reticulocyte maturation. (Blood. 2010; 115: 2021-2027) C1 [Liu, Jing; Guo, Xinhua; Mohandas, Narla; An, Xiuli] New York Blood Ctr, Red Cell Physiol Lab, New York, NY 10065 USA. [Chasis, Joel A.] Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA USA. [An, Xiuli] Peking Univ, Hlth Sci Ctr, Dept Biophys, Beijing 100871, Peoples R China. RP An, XL (reprint author), New York Blood Ctr, Red Cell Physiol Lab, 310 E 67th St, New York, NY 10065 USA. EM xan@nybloodcenter.org FU National Institutes of Health [DK26263, DK32094, HL31579, DK56267] FX This work was supported in part by National Institutes of Health grants DK26263, DK32094, HL31579, and DK56267. NR 31 TC 71 Z9 72 U1 3 U2 14 PU AMER SOC HEMATOLOGY PI WASHINGTON PA 1900 M STREET. NW SUITE 200, WASHINGTON, DC 20036 USA SN 0006-4971 J9 BLOOD JI Blood PD MAR 11 PY 2010 VL 115 IS 10 BP 2021 EP 2027 DI 10.1182/blood-2009-08-241182 PG 7 WC Hematology SC Hematology GA 571KS UT WOS:000275751300026 PM 20038785 ER PT J AU Hontama, N Inokuchi, Y Ebata, T Dedonder-Lardeux, C Jouvet, C Xantheas, SS AF Hontama, Naoya Inokuchi, Yoshiya Ebata, Takayuki Dedonder-Lardeux, Claude Jouvet, Christophe Xantheas, Sotiris S. TI Structure of the Calix[4]arene-(H2O) Cluster: The World's Smallest Cup of Water SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID BASIS-SETS; MASS-SPECTROMETRY; ORGANIC-MOLECULES; CALIXARENES; NMR; COMPLEXES; AFFINITIES; HYDROGEN; AMINES AB The structure of the calix[4]arene(C4A)-(H2O) cluster formed in a supersonic beam has been investigated by mass-selected resonant tow-photon ionization (R2PI) spectroscopy. IR-UV double resonance spectroscopy, IR photodissociation (IRPD) specctroscopy and by high-level quantum chemical calculations. The IR-UV double resonance spectrum of C4A-H2O) exhibits a broad and strong hydrogen-bonded OH stretching band at 3160 cm(-1) and a weak asymmetric OH stretching band at 3700 cm(-1) The IRPD measurement of the cluster produced a value of 3140 cm(-1) for the C4A-(H2O) -> C4A + H2O disscoiation energy High-level electronic structure calculations at the MP2 level of theory with basis sets up to quadruple-zeta quality suggest that the endo-isomer (water inside the C4A cavity) is similar to 1100 cm(-1) more stable then the exo-isomer (water hydrogen bonded to the rim of C4A). The endo-isomer has a best-computed (at the MP2/aug-cc-pVQZ level) value of 3127 cm(-1) for the binding energy, just similar to 15 cm(-1) shy of the experimentally determined threshold and an IR spectrum in excellent agreement with the experimentally observed on. In contrast, the B3LYP density functional fails to even predict a stable structure for the endo-isomer demonstrating the inability of that level of theory to describe the delicate balance between structures exhibiting cumulative OH-pi H-bonding and dipole-dipole interactions (endo-isomer) when compared to the ones emanating from maximizing the cooperative effects associated with the formation of hydrogen bonded homodromic betworks (exo-isomer). The comparison of the experimental results with the ones from high-level electronic structure calculations therefore unambiguously assign the endo-isomer as the global minimum of the C4A-H2O) cluster, world's smallest cup of water. C1 [Hontama, Naoya; Inokuchi, Yoshiya; Ebata, Takayuki] Hiroshima Univ, Dept Chem, Grad Sch Sci, Higashihiroshima 7398526, Japan. [Dedonder-Lardeux, Claude; Jouvet, Christophe] Univ Paris 11, Photophys Mol Lab, CNRS, F-91405 Orsay, France. [Dedonder-Lardeux, Claude; Jouvet, Christophe] Univ Paris 11, Ctr Laser, F-91405 Orsay, France. [Xantheas, Sotiris S.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Ebata, T (reprint author), Hiroshima Univ, Dept Chem, Grad Sch Sci, Higashihiroshima 7398526, Japan. RI jouvet, christophe/E-6985-2011; Inokuchi, Yoshiya/D-4681-2013; Xantheas, Sotiris/L-1239-2015 OI Inokuchi, Yoshiya/0000-0001-7959-5315; FU JSPS [18205003]; MAE; MEXT [477]; Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, U.S. Department of Enegy FX Part of this work is supported by JSPS and MAE under the Japanese-France Integrated Action Program (SAKURA) T.E. also acknowledges JSPS for the support through a Grant-in-Aid project (No. 18205003) and MEXT for the support through a Grant-in-Aid for the Scientific Research on Priority Area "Molecular Science for Supra Functional Systems" (No. 477). Part of this work is supported by the Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, U.S. Department of Enegy. Battelle operates the Pacific Northwest National Laboratory for the U.S. Department of Energy. This research was performed in part using the Molecular Science Computing Facility (MSCF) in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research NR 26 TC 25 Z9 27 U1 0 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 11 PY 2010 VL 114 IS 9 BP 2967 EP 2972 DI 10.1021/jp902967q PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 562JP UT WOS:000275046600003 PM 19694445 ER PT J AU Zubarev, DY Domin, D Lester, WA AF Zubarev, Dmitry Yu. Domin, Dominik Lester, William A., Jr. TI Quantitative Characteristics of Qualitative Localized Bonding Patterns SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID ELECTRON LOCALIZATION; TOPOLOGICAL ANALYSIS; AROMATIC-MOLECULES; FUNCTION ELF; AB-INITIO; SHARING INDEXES; BORON CLUSTERS; WAVE-FUNCTIONS; CHEMICAL-BOND; ORDER AB Patterns of localized and delocalized chemical bonding obtained Using (lie recently proposed adaptive natural density partitioning (AdNDP) provide a qualitative description of electronic structure but miss ally quantitative information. Descriptors. such as the election localization functions (ELF), provide quantitative characteristics of bonding and can enhance the usefulness Of qualitative patterns In the present study, We Used ELF and a related construct. charge-density-weighted ELF (ELE rho), to characterize localized and delocalized bonding in a variety of systems It is demonstrated that ELF rho yields a more detailed description than ELF when used to analyze bonding in aromatic. conflicting aromatic. and antiaromatic systems Both canonical molecular orbitals (CMOs) and localized multicenter two-electron (nc-2e) bonds obtained in the latter case by AdNDP localization are used to calculate ELF rho C1 [Zubarev, Dmitry Yu.; Domin, Dominik; Lester, William A., Jr.] Univ Calif Berkeley, Dept Chem, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. [Domin, Dominik; Lester, William A., Jr.] Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Lester, WA (reprint author), Univ Calif Berkeley, Dept Chem, Kenneth S Pitzer Ctr Theoret Chem, Berkeley, CA 94720 USA. FU National Science Foundation [CHE-0809969]; Director. Office of Energy Research, Office of Basic Energy Sciences. Chemical Sciences. Geosciences and Bioscience Division [DE-AC03-76F00098] FX Dmitry Y Zubarev was supported by the National Science Foundation under grant NSF CHE-0809969 Dominik Domin and William A Lester, Ji. were supported by the Director. Office of Energy Research, Office of Basic Energy Sciences. Chemical Sciences. Geosciences and Bioscience Division of the US Department of Energy, under Contract No DE-AC03-76F00098 NR 55 TC 1 Z9 1 U1 1 U2 10 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 11 PY 2010 VL 114 IS 9 BP 3074 EP 3079 DI 10.1021/jp906914y PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 562JP UT WOS:000275046600015 PM 19817374 ER PT J AU Kostko, O Leone, SR Duncan, MA Ahmed, M AF Kostko, Oleg Leone, Stephen R. Duncan, Michael A. Ahmed, Musahid TI Determination of Ionization Energies of Small Silicon Clusters with Vacuum Ultraviolet Radiation SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID SI-N; PHOTOIONIZATION; POTENTIALS; SPECTROSCOPY; GEOMETRIES; SPECTRUM; CATIONS; ANIONS AB In this work we report oil Single photon vacuum Ultraviolet photoionization of small silicon clusters (17 1 similar to 7) produced via laser ablation of Si The adiabatic ionization energies (AIE) are extracted from experimental photoionization efficiency (PIE) curves with the help of Franck-Condon simulations. used to interpret the shape and onset of the PIE curves. The obtained AIEs are (all energies are ill eV) Si (8.13 +/- 0.05), Si(2) (7.92 +/- 0.05), Si(3) (8.12 +/- 0.05), Si(4) (8.2 +/- 0.1), Si(5) (7.96 +/- 0.07), Si(6) (7.8 +/- 0.1), and Si(7) (7.8 +/- 0.1). Most of the experimental AIE values are ill good it agreement with density functional electronic structure calculations To explain observed deviations between the experimental and theoretical AIEs for Si(4) and Si(6), 11 theoretical search of different isomers of these species is performed Electronic structure calculations aid ill (lie interpretation of the a(2)Pi(a) state of Si(2)(+) dimer in the PIE spectrum. Time-dependent density functional theory calculations are performed to reveal the energies of electronically excited states ill the cations for a number of Si clusters. C1 [Kostko, Oleg; Leone, Stephen R.; Ahmed, Musahid] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. [Leone, Stephen R.] Univ Calif Berkeley, Dept Chem & Phys, Berkeley, CA 94720 USA. [Duncan, Michael A.] Univ Georgia, Dept Chem, Athens, GA 30602 USA. RP Ahmed, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, MS 6R-2100,1 Cyclotron Rd, Berkeley, CA 94720 USA. RI Ahmed, Musahid/A-8733-2009; Kostko, Oleg/A-3693-2010; Kostko, Oleg/B-3822-2009 OI Kostko, Oleg/0000-0003-2068-4991 FU Director. Office of Energy Research. Office of Basic Energy Sciences, and Chemical Sciences Division of the U.S Department Of Energy [DE-AC02-05CH11231]; Air Force office of Scientific Research FX This work was supported by the Director. Office of Energy Research. Office of Basic Energy Sciences, and Chemical Sciences Division of the U.S Department Of Energy Under Contract No DE-AC02-05CH11231 OK acknowledges Jia Zhou for numerous helpful discussions. M.A.D acknowledges support from the Air Force office of Scientific Research. NR 43 TC 27 Z9 27 U1 1 U2 17 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 11 PY 2010 VL 114 IS 9 BP 3176 EP 3181 DI 10.1021/jp9091688 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 562JP UT WOS:000275046600027 PM 20017531 ER PT J AU Yen, TA Garand, E Shreve, AT Neumark, DM AF Yen, Terry A. Garand, Etienne Shreve, Alexander T. Neumark, Daniel M. TI Anion Photoelectron Spectroscopy of C3N- and C5N- SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID AB-INITIO; LABORATORY DETECTION; MATRIX-ISOLATION; NEGATIVE-IONS; CLUSTERS; MOLECULES; RADICALS; STATES; PHOTODETACHMENT; IDENTIFICATION AB Anion photoelectron spectroscopy of C3N- and C5N- is performed using slow electron velocity-map imaging (SEVI) and field-free time-of-flight (TOF), respectively. The SEVI spectrum exhibits well-resolved vibrational transitions from the linear C3N- ground state to the corresponding C3N- ground state. The TOF spectrum comprises transitions arising from the linear C5N- ground state to the corresponding neutral ground and excited states. This study yields the adiabatic electron affinities of C3N- and C5N- to be 4.305 +/- 0.001 and 4.45 +/- 0.03 eV, respectively, and a term value of 560 +/- 120 cm(-1) for the (A) over tilde (2)Pi state of C5N-. Vibrational frequencies for the degenerate cis and trans bending modes of C3N- are also extracted. C1 [Yen, Terry A.; Garand, Etienne; Shreve, Alexander T.; Neumark, Daniel M.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Neumark, Daniel M.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Neumark, DM (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Neumark, Daniel/B-9551-2009 OI Neumark, Daniel/0000-0002-3762-9473 FU National Science Foundation [CHE-0649647]; National Science and Engineering Research Council of Canada (NSERC) FX This work was supported by the National Science Foundation under Grant No. CHE-0649647. E G thanks the National Science and Engineering Research Council of Canada (NSERC) for a postgraduate scholarship NR 52 TC 14 Z9 14 U1 2 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 11 PY 2010 VL 114 IS 9 BP 3215 EP 3220 DI 10.1021/jp9093996 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 562JP UT WOS:000275046600032 PM 20000480 ER PT J AU Soorkia, S Trevitt, AJ Selby, TM Osborn, DL Taatjes, CA Wilson, KR Leone, SR AF Soorkia, Satchin Trevitt, Adam J. Selby, Talitha M. Osborn, David L. Taatjes, Craig A. Wilson, Kevin R. Leone, Stephen R. TI Reaction of the C2H Radical with 1-Butyne (C4H6): Low-Temperature Kinetics and Isomer-Specific Product Detection SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID LAVAL NOZZLE APPARATUS; VOYAGER INFRARED OBSERVATIONS; POLYCYCLIC AROMATIC-HYDROCARBONS; SET MODEL CHEMISTRY; TITANS ATMOSPHERE; RATE COEFFICIENTS; HAZE FORMATION; GAS-PHASE; COUPLING PHOTOCHEMISTRY; ALLENE CH2=C=CH2 AB The rate coefficient for the reaction of the ethynyl radical (C2H) with 1-butyne (H-C C-CH2-CH3) is measured in a pulsed Laval nozzle apparatus. Ethynyl radicals are formed by laser photolysis of acetylene (C2H2) at 193 nm and detected via chemiluminescence (C2H + O-2 -> CH (A(2)Delta) + CO2). The rate coefficients are measured over the temperature range of 74-295 K. The C2H + 1-butyne reaction exhibits no barrier and occurs with rate constants close to the collision limit. The temperature-dependent rate coefficients can be fit within experimental uncertainties by the expression k = (2.4 +/- 0.5) x 10(-10)(T/295 K)(-(0.04+/-0.03)) cm(3) molecule(-1) s(-1). Reaction products are detected at room temperature (295 K) and 533 Pa using a multiplexed photoionization mass spectrometer (MPIMS) coupled to the tunable vacuum ultraviolet synchrotron radiation from the Advanced Light Source at the Lawrence Berkeley National Laboratory. Two product channels are identified for this reaction: m/z = 64 (C5H4) and m/z = 78 (C6H6) corresponding to the CH3-loss and H-loss channels, respectively. Photoionization efficiency (PIE) curves are used to analyze the isomeric composition of both product channels. The C5H4 products are found to be exclusively linear isomers composed of ethynylallene and methyldiacetylene in a 4:1 ratio. In contrast, the C6H6 product channel includes two cyclic isomers, fulvene 18(+/-5)% and 3,4-dimethylenecyclobut-1-ene (DMCB) 32(+/-8)%, as well as three linear isomers, 2-ethynyl-1,3-butadiene 8(+/-5)%, 3,4-hexadiene-1-yne 28(+/-8)%, and 1,3-hexadiyne 14(+/-5)%. Within experimental uncertainties, we do not see appreciable amounts of benzene and an upper limit of 10% is estimated. Diacetylene (C4H2) formation via the C2H5-loss channel is also thermodynamically possible but cannot be observed due to experimental limitations. The implications of these results for modeling of planetary atmospheres, especially of Saturn's largest moon Titan and the relationships to combustion reactions, are discussed. C1 [Soorkia, Satchin; Leone, Stephen R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Soorkia, Satchin; Leone, Stephen R.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Wilson, Kevin R.; Leone, Stephen R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. [Trevitt, Adam J.] Univ Wollongong, Sch Chem, Wollongong, NSW 2522, Australia. [Selby, Talitha M.] Univ Wisconsin Washington County, Dept Chem, W Bend, WI 53095 USA. [Osborn, David L.; Taatjes, Craig A.] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. RP Leone, SR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RI Trevitt, Adam/A-2915-2009 OI Trevitt, Adam/0000-0003-2525-3162 FU National Aeronautics and Space Administration [NNX09AB60G]; Division of Chemical Sciences, Geosciences and Bio-sciences, the Office of Basic Energy Sciences, the U.S Department of Energy; National Nuclear Security Administration [DE-AC04-94-AL85000]; Director, Office of Science, Office of Basic Energy Sciences of the U.S Department of Energy [DE-AC02-05CH11231]; International Synchrotron Access Program (ISAP); Federal Government of Australia FX The support of personnel (S.S) for this research by the National Aeronautics and Space Administration (Grant No. NNX09AB60G) is gratefully acknowledged We thank Mr Howard Johnsen for excellent technical support Sandia authors and instrumentation for this work are supported by the Division of Chemical Sciences, Geosciences and Bio-sciences, the Office of Basic Energy Sciences, the U.S Department of Energy. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the National Nuclear Security Administration under Contract No DE-AC04-94-AL85000 The Advanced Light Source and Chemical Sciences Division (K.R.W and S.R.L) are supported by the Director, Office of Science, Office of Basic Energy Sciences of the U.S Department of Energy under Contract No DE-AC02-05CH11231 at the Lawrence Berkeley National Laboratory A.J.T acknowledges travel funding provided by the International Synchrotron Access Program (ISAP) managed by the Australian Synchrotron. The ISAP is funded by a National Collaborative Research Infrastructure Strategy grant provided by the Federal Government of Australia. NR 75 TC 36 Z9 36 U1 3 U2 48 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 11 PY 2010 VL 114 IS 9 BP 3340 EP 3354 DI 10.1021/jp911132r PG 15 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 562JP UT WOS:000275046600048 PM 20141190 ER PT J AU Taatjes, CA Osborn, DL Selby, TM Meloni, G Trevitt, AJ Epifanovsky, E Krylov, AI Sirjean, B Dames, E Wang, H AF Taatjes, Craig A. Osborn, David L. Selby, Talitha M. Meloni, Giovanni Trevitt, Adam J. Epifanovsky, Evgeny Krylov, Anna I. Sirjean, Baptiste Dames, Enoch Wang, Hai TI Products of the Benzene + O(P-3) Reaction SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID PHOTOIONIZATION MASS-SPECTROMETRY; POTENTIAL-ENERGY SURFACES; CROSSED MOLECULAR-BEAMS; ABSOLUTE RATE CONSTANTS; COUPLED-CLUSTER METHODS; GAS-PHASE; AROMATIC-HYDROCARBONS; O(P-3) ATOMS; SYNCHROTRON-PHOTOIONIZATION; PREMIXED ACETYLENE AB The gas-phase reaction of benzene with O(P-3) is of considerable interest for modeling of aromatic oxidation, and also because there exist fundamental questions concerning the prominence of intersystem crossing in the reaction. While its overall rate constant has been studied extensively, there are still significant uncertainties in the product distribution. The reaction proceeds mainly through the addition of the O atom to benzene, forming an initial triplet diradical adduct, which can either dissociate to form the phenoxy radical and H atom or undergo intersystem crossing onto a singlet surface, followed by a multiplicity of internal isomerizations, leading to several possible reaction products. In this work, we examined the product branching ratios of the reaction between benzene and O(P-3) over the temperature range 300-1000 K and pressure range 1-10 Torr. The reactions were initiated by pulsed-laser photolysis of NO2 in the presence of benzene and helium buffer in a slow-flow reactor, and reaction products were identified by using the multiplexed chemical kinetics photoionization mass spectrometer operating at the Advanced Light Source (ALS) of Lawrence Berkeley National Laboratory. Phenol and phenoxy radical were detected and quantified. Cyclopentadiene and cyclopentadienyl radical were directly identified for the first time. Finally, ab initio calculations and master equation/RRKM modeling were used to reproduce the experimental branching ratios, yielding pressure-dependent rate expressions for the reaction channels, including phenoxy + H, phenol, cyclopentadiene + CO, which are proposed for kinetic modeling of benzene oxidation. C1 [Taatjes, Craig A.; Osborn, David L.; Selby, Talitha M.; Meloni, Giovanni] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA. [Trevitt, Adam J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Berkeley, CA 94720 USA. [Trevitt, Adam J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Phys, Berkeley, CA 94720 USA. [Epifanovsky, Evgeny; Krylov, Anna I.] Univ So Calif, Dept Chem, Los Angeles, CA 90089 USA. [Sirjean, Baptiste; Dames, Enoch; Wang, Hai] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA. RP Taatjes, CA (reprint author), Sandia Natl Labs, Combust Res Facil, Mailstop 9055, Livermore, CA 94551 USA. EM haiw@usc.edu RI Wang, Hai/A-1292-2009; Trevitt, Adam/A-2915-2009; Dames, Enoch/F-9505-2011 OI Wang, Hai/0000-0001-6507-5503; Trevitt, Adam/0000-0003-2525-3162; FU Division of Chemical Sciences, Geosciences, and Biosciences, the Office of Basic Energy Sciences, the U.S. Department of Energy; Sandia Corporation, a Lockheed Martin Company [DE-AC04-94-AL85000]; Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division, of the U.S. Department of Energy [DE-AC02-05CH11231]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001198]; National Aeronautics and Space Administration [NAGS-13339]; Air Force of Scientific Research [FA9550-07-1-0168]; Strategic Environmental Research and Developmental Program (SERDP); Department of Energy [DE-FG02-05ER1-5685] FX This work is supported by the Division of Chemical Sciences, Geosciences, and Biosciences, the Office of Basic Energy Sciences, the U.S. Department of Energy. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the National Nuclear Security Administration under contract DE-AC04-94-AL85000. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 at Lawrence Berkeley National Laboratory. B.S, E.D, and H.W. acknowledge support for the part of the work concerning master equation modeling by the Combustion Energy Frontier Research Center (CEFRC), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001198. The support of personnel (A.J.T.), for this research by the National Aeronautics and Space Administration (grant NAGS-13339) is gratefully acknowledged. H.W. also acknowledges partial support by the Air Force of Scientific Research (Grant No. FA9550-07-1-0168) and by the Strategic Environmental Research and Developmental Program (SERDP). A.I.K. and E.E. acknowledge support of the Department of Energy (DE-FG02-05ER1-5685). NR 69 TC 41 Z9 41 U1 7 U2 48 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 11 PY 2010 VL 114 IS 9 BP 3355 EP 3370 DI 10.1021/jp9114145 PG 16 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 562JP UT WOS:000275046600049 PM 20099861 ER PT J AU Katan, C Charlot, M Mongin, O Le Droumaguet, C Jouikov, V Terenziani, F Badaeva, E Tretiak, S Blanchard-Desce, M AF Katan, Claudine Charlot, Marina Mongin, Olivier Le Droumaguet, Celine Jouikov, Viatcheslav Terenziani, Francesca Badaeva, Ekaterina Tretiak, Sergei Blanchard-Desce, Mireille TI Simultaneous Control of Emission Localization and Two-Photon Absorption Efficiency in Dissymmetrical Chromophores SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID STRUCTURE-PROPERTY RELATIONSHIPS; INTRAMOLECULAR CHARGE-TRANSFER; NONLINEAR-OPTICAL PROPERTIES; PUSH-PULL MOLECULES; EXCITATION CROSS-SECTIONS; SYMMETRY-BREAKING; SINGLET OXYGEN; EXCITED-STATE; QUANTUM DOTS; IN-VIVO AB The aim of the present work is to demonstrate that combined spatial tuning of fluorescence and two-photon absorption (TPA) properties of multipolar chromophores can be achieved by introduction of slight electronic chemical dissymmetry. In that perspective, two model series of structurally related chromophores have been designed and investigated. One is based oil rod-like quadrupolar chromophores bearing either two identical or different electron-donating (D) end groups and the other on three-branched octupolar chromophores built from a trigonal donating moiety bearing identical or different acceptor (A) peripheral groups. The influence of the electronic dissymmetry is investigated by combined experimental and theoretical studies of the linear and nonlinear optical properties of dissymmetrical chromophores compared to their symmetrical counterparts. In both types of systems (i.e., quadrupoles and octupoles), experiments and theory reveal that excitation is essentially delocalized and that excitation involves synchronized charge redistribution (i.e., concerted intramolecular charge transfer) between the different D and A moieties within the multipolar structure. In contrast, the emission sterns only from a particular dipolar subunit bearing the strongest D or A moiety due to fast excitation localization after excitation, prior to emission. Hence, control of emission characteristics (polarization and emission spectrum), can be achieved, in addition to localization, by controlled introduction of electronic dissymmetry (i,e., replacement of one of the D or A end-groups by a slightly stronger D' or A' unit). Interestingly, slight dissymmetrical functionalization of both quadrupolar and octupolar compounds does not lead to significant loss in TPA responses and can even be beneficial due to the spectral broadening and peak position tuning that it allows. This study thus reveals an original molecular engineering route allowing TPA enhancement in multipolar Structures, due to concerted core-to-periphery or periphery-to-core intramolecular charge redistribution upon excitation, while providing for control of emission localization. Such a route could be extended to more intricate (dendritic) and multipolar (3D) systems. C1 [Tretiak, Sergei] Los Alamos Natl Lab, Div Theoret, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. [Katan, Claudine; Charlot, Marina; Mongin, Olivier; Le Droumaguet, Celine; Jouikov, Viatcheslav; Blanchard-Desce, Mireille] CNRS, Chim & Photon Mol UMR 6510, F-35042 Rennes, France. [Katan, Claudine; Charlot, Marina; Mongin, Olivier; Le Droumaguet, Celine; Jouikov, Viatcheslav; Blanchard-Desce, Mireille] Univ Rennes 1, UMR 6510, F-35042 Rennes, France. [Terenziani, Francesca] Univ Parma, Dipartimento Chim GIAF, I-43100 Parma, Italy. [Terenziani, Francesca] UdR Parma, INSTM, I-43100 Parma, Italy. [Badaeva, Ekaterina] Univ Washington, Dept Chem, Seattle, WA 98195 USA. RP Tretiak, S (reprint author), Los Alamos Natl Lab, Div Theoret, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA. EM serg@lanl.gov; mireille.blan-chard-desce@univ-rennes1.fr RI Tretiak, Sergei/B-5556-2009; Terenziani, Francesca/K-2951-2015; KATAN, Claudine/I-9446-2012 OI Tretiak, Sergei/0000-0001-5547-3647; Terenziani, Francesca/0000-0001-5162-9210; KATAN, Claudine/0000-0002-2017-5823 FU Italo-French University; Egide; US Department of Energy, Center for Integrated Nanotechnologies (CINT), at Los Alamos National Laboratory (LANL) [DE-AC52-06NA25396]; DGA [00.34.070.00.470.75.653]; Rennes Metropole; Center for Nonlinear Studies (CNLS) at LANL; MIUR [PRIN2006-031511]; GENCI-CINES [2007-[c20070822414], 2008-[x20080825087]] FX M.B.-D. and S.T. gratefully acknowledge CNRS for an invited research associate position to S.T. M.B.-D., C.K., and F.T. acknowledge the Italo-French University and Egide for funding through the Galileo Project. This work was performed in part at the US Department of Energy, Center for Integrated Nanotechnologies (CINT), at Los Alamos National Laboratory (LANL) (contract DE-AC52-06NA25396). M.B.-D. acknowledges financial support from DGA (grant 00.34.070.00.470.75.653) and Rennes Metropole (equipment grant "Allocation Specifique d'Installation"). M.C. received a fellowship from DGA. We acknowledge Support of Center for Nonlinear Studies (CNLS) at LANL. We thank E. Leroux for technical assistance in the synthesis, S. Soualmi in electrochemical measurements, and M. H. V. Werts for help in the TPEF measurements. F.T. acknowledges MIUR for funding through PRIN2006-031511. A portion of the calculations was performed using HPC resources from GENCI-CINES (grant 2007-[c20070822414] and 2008-[x20080825087]). NR 104 TC 33 Z9 33 U1 1 U2 24 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD MAR 11 PY 2010 VL 114 IS 9 BP 3152 EP 3169 DI 10.1021/jp911445m PG 18 WC Chemistry, Physical SC Chemistry GA 562KB UT WOS:000275047900009 PM 20163097 ER PT J AU Calderon, CP AF Calderon, Christopher P. TI Detection of Subtle Dynamical Changes Induced by Unresolved "Conformational Coordinates" in Single-Molecule Trajectories via Goodness-of-Fit Tests SO JOURNAL OF PHYSICAL CHEMISTRY B LA English DT Article ID FORCE SPECTROSCOPY; DIFFUSION-MODELS; SIMULATIONS; SPECIFICATION; FLUCTUATIONS; EQUILIBRIUM; TRANSITIONS; INFERENCE; PROTEINS AB Single-molecule experiments are allowing researchers to track the evolution of a few order parameters characterizing complex biomolecules. At fine temporal resolution, artifacts of unresolved degrees of freedom, for example, those induced by collective molecular motion, often influence the dynamics. Reliably detecting subtle changes in dynamics at the nanoscale call be difficult due to the inherent stochasticity, but such changes call have relevance to understanding complex enzyme kinetics. Surrogate models can be used to summarize the information content in single-molecule time series (containing fluctuations occurring over multiple time scales). The focus ill this article is oil detecting slow time scale changes through the use of the surrogates. The conditional density, associated with the surrogates, allows one to formulate quantitative hypothesis tests which call detect the influence of unresolved coordinates in cases where the dynamics are modulated subtly. The relevance of quantitative (and appropriate) testing methods to analyze single-molecule]e time series is discussed and demonstrated. A brief discussion oil some merits Of using frequentist (versus Bayesian) time series methods to analyze single-molecule data is also presented. Idealized simulations mimicking features relevant to some enzyme systems where an "unresolved conformational coordinate" slowly evolves (1) with inertia and (2) diffusively are Studied in the nonstationary (nonergodic) setting; however, the findings are also relevant to experimentally measured time series and stationary signals. C1 Univ Calif Berkeley, Lawrence Berkeley Lab, High Performance Comp Res Dept, Berkeley, CA 94720 USA. RP Calderon, CP (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, High Performance Comp Res Dept, Berkeley, CA 94720 USA. EM CPCalderon@lbl.gov FU Director, Office of Advanced Scientific Computing Research of the U.S. Department of Energy [DE-AC02-05CH11231] FX The author extends his gratitude to an anonymous referee for helpful comments and references. This research was supported in part by the Director, Office of Advanced Scientific Computing Research of the U.S. Department of Energy under Contract DE-AC02-05CH11231. NR 43 TC 6 Z9 6 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1520-6106 J9 J PHYS CHEM B JI J. Phys. Chem. B PD MAR 11 PY 2010 VL 114 IS 9 BP 3242 EP 3253 DI 10.1021/jp911124z PG 12 WC Chemistry, Physical SC Chemistry GA 562KB UT WOS:000275047900017 PM 20148536 ER PT J AU Odbadrakh, K Lewis, JP Nicholson, DM Petrova, T Michalkova, A Lesczynski, J AF Odbadrakh, Khorgolkhuu Lewis, James P. Nicholson, Donald M. Petrova, Tetyana Michalkova, Andrea Lesczynski, Jerzy TI Interactions of Cyclotrimethylene Trinitramine (RDX) with Metal-Organic Framework IRMOF-1 SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID DENSITY-FUNCTIONAL-THEORY; MOLECULAR-DYNAMICS; SORPTION PROPERTIES; HYDROGEN STORAGE; DESIGN; VAN; SIMULATIONS; ADSORPTION; TEMPERATURE; DIFFUSION AB In this paper, we report on the interactions of 1,3,5-trinitro-s-triazine, or cyclotrimethylene trinitramine (RDX), a highly explosive (HE) molecule, with the metal-organic frameworks (MOF) called IRMOF1. IRMOFs are predicted to act as preconcentrators for explosive molecules or other adsorbates because of their high porosity and selectivity through changeable organic linkers. We choose IRMOF-1 as a benchmark test case for further investigations of MOF-HE interactions. We use the density-functional-theory-based code FIREBALL to estimate physisorption energies for the RDX molecules both in the interior and on surfaces of IRMOF-1 cages. Our calculations show that the RDX molecules interact more strongly with the exterior IRMOF-1 surface than with the interior one, suggesting an important role of steric hindrance inside periodic IRMOF-1 cages. We extended our investigations to molecular-dynamics simulations at room temperature to see if any trapping configurations of RDX molecule result from the configurations at zero temperature. C1 [Odbadrakh, Khorgolkhuu; Lewis, James P.] W Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA. [Nicholson, Donald M.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. [Petrova, Tetyana; Michalkova, Andrea] Jackson State Univ, Dept Chem, Computat Ctr Mol Struct & Interact, Jackson, MS 39217 USA. RP Odbadrakh, K (reprint author), W Virginia Univ, Dept Phys & Astron, Box 6315, Morgantown, WV 26506 USA. EM od.odbadrakh@mail.wvu.edu; james.lewis@mail.wvu.edu NR 42 TC 8 Z9 8 U1 1 U2 21 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1932-7447 J9 J PHYS CHEM C JI J. Phys. Chem. C PD MAR 11 PY 2010 VL 114 IS 9 BP 3732 EP 3736 DI 10.1021/jp905459h PG 5 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 562JG UT WOS:000275045600002 ER PT J AU Kwak, JH Hu, JZ Hoyt, DW Sears, JA Wang, CM Rosso, KM Felmy, AR AF Kwak, Ja Hun Hu, Jian Zhi Hoyt, David W. Sears, Jesse A. Wang, Chongming Rosso, Kevin M. Felmy, Andrew R. TI Metal Carbonation of Forsterite in Supercritical CO2 and H2O Using Solid State Si-29, C-13 NMR Spectroscopy SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID HIGH-RESOLUTION; DISSOLUTION RATES; GEOLOGICAL MEDIA; SEQUESTRATION; MINERALS; DIOXIDE; TEMPERATURE; DYPINGITE; OLIVINE; STORAGE AB Ex situ natural abundance magic angle spinning (MAS) NMR was used for the first time to Study fundamental mineral carbonation processes and reaction extent relevant to geologic carbon sequestration (GCS) using a model silicate mineral forsterite (Mg2SiO4)+supercritical CO2 with and Without H2O. Run conditions were 80 degrees C and 96 atm. With H2O but without CO2, Si-29 MAS NMR reveals that the reaction products contain only two peaks of similar intensities located at about -84.8 and -91.8 ppm, which can be assigned to surface Q1 and Q2 species, i.e., SiO4 tetrahedra sharing one and two corners with other tetrahedra, respectively. Using scCO(2) without H2O, no reaction is observed within 7 days. Using both scCO(2) and H2O, the surface reaction products for silica are mainly Q4 species (-111.6 ppm) accompanied by a lesser amount of Q3 (-102 ppm) and Q2 (-91.8 ppm) species. No Surface Q1 species were detected, indicating the carbonic acid formation and magnesite (MgCO3) precipitation reactions are faster than the forsterite hydrolysis process. Thus, it call be Concluded that the Mg2SiO4 hydrolysis process is the rate limiting step of the overall mineral carbonation process. Si-29 NMR combined with XRD, TEM, SAED, and EDX further reveals that the reaction is a surface reaction with the Mg2SiO4 Crystallite in the core and with condensed Q2, Q3, and Q4 species forming highly Porous amorphous surface layers. C-13 MAS NMR unambiguously identified a reaction intermediate as Mg-5(CO3)(4)(OH)(2)center dot 5H(2)O, i.e., the dypingite. C1 [Kwak, Ja Hun; Hu, Jian Zhi; Hoyt, David W.; Sears, Jesse A.; Wang, Chongming; Rosso, Kevin M.; Felmy, Andrew R.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Hu, JZ (reprint author), Pacific NW Natl Lab, POB 999,MS K8-98, Richland, WA 99352 USA. EM Jianzhi.Hu@pnl.gov RI Hu, Jian Zhi/F-7126-2012; Hoyt, David/H-6295-2013; Kwak, Ja Hun/J-4894-2014 FU Carbon Sequestration Initiative; Laboratory Directed Research and Development at Pacific Northwest National Laboratory (PNNL); U.S. Department of Energy (DOE) [DE-AC06-76RLO-1830] FX This work was supported by the Carbon Sequestration Initiative and funded by Laboratory Directed Research and Development at Pacific Northwest National Laboratory (PNNL) and the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, through a Single Investigator Small Group Research (SISGR) grant. All of the experiments were performed at the Environmental Molecular Science Laboratory, a national Scientific User facility sponsored by the DOE Office of Biological and Environmental Research, and located at PNNL. PNNL is operated for DOE by Battelle Memorial Institute under Contract No. DE-AC06-76RLO-1830. Dr. Herbert T. Schact is acknowledged for donating the MgCO3 crystal for the 13C MAS NMR given in Figure 6f. NR 30 TC 49 Z9 49 U1 3 U2 42 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1932-7447 J9 J PHYS CHEM C JI J. Phys. Chem. C PD MAR 11 PY 2010 VL 114 IS 9 BP 4126 EP 4134 DI 10.1021/jp1001308 PG 9 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 562JG UT WOS:000275045600060 ER PT J AU Moore, JE AF Moore, Joel E. TI The birth of topological insulators SO NATURE LA English DT Article ID HGTE QUANTUM-WELLS; SINGLE DIRAC CONE; SURFACE-STATES; REALIZATION; BI2TE3; MODES; PHASE AB Certain insulators have exotic metallic states on their surfaces. These states are formed by topological effects that also render the electrons travelling on such surfaces insensitive to scattering by impurities. Such topological insulators may provide new routes to generating novel phases and particles, possibly finding uses in technological applications in spintronics and quantum computing. C1 [Moore, Joel E.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Moore, Joel E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Moore, JE (reprint author), Univ Calif Berkeley, Dept Phys, 366 Le Conte 7300, Berkeley, CA 94720 USA. EM jemoore@berkeley.edu RI Moore, Joel/O-4959-2016 OI Moore, Joel/0000-0002-4294-5761 FU US National Science Foundation FX I have benefited from conversations about topological insulators with L. Balents, B. A. Bernevig, A. Essin, M. Franz, D. Haldane, Z. Hasan, C. Kane, D.-H. Lee, A. Ludwig, L. Molenkamp, S. Ryu, D. Vanderbilt, A. Vishwanath, X.-G. Wen, C. Xu and S.-C. Zhang. My work on topological insulators is supported by the US National Science Foundation. NR 41 TC 1163 Z9 1170 U1 60 U2 468 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAR 11 PY 2010 VL 464 IS 7286 BP 194 EP 198 DI 10.1038/nature08916 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 566JO UT WOS:000275366100032 PM 20220837 ER PT J AU Reyes, R Mandelbaum, R Seljak, U Baldauf, T Gunn, JE Lombriser, L Smith, RE AF Reyes, Reinabelle Mandelbaum, Rachel Seljak, Uros Baldauf, Tobias Gunn, James E. Lombriser, Lucas Smith, Robert E. TI Confirmation of general relativity on large scales from weak lensing and galaxy velocities SO NATURE LA English DT Article ID DIGITAL SKY SURVEY; REDSHIFT DISTORTIONS AB Although general relativity underlies modern cosmology, its applicability on cosmological length scales has yet to be stringently tested. Such a test has recently been proposed(1), using a quantity, E(G), that combines measures of large-scale gravitational lensing, galaxy clustering and structure growth rate. The combination is insensitive to 'galaxy bias' (the difference between the clustering of visible galaxies and invisible dark matter) and is thus robust to the uncertainty in this parameter. Modified theories of gravity generally predict values of E(G) different from the general relativistic prediction because, in these theories, the 'gravitational slip' (the difference between the two potentials that describe perturbations in the gravitational metric) is non-zero, which leads to changes in the growth of structure(2) and the strength of the gravitational lensing effect(3). Here we report that E(G) = 0.39 +/- 0.06 on length scales of tens of megaparsecs, in agreement with the general relativistic prediction of E(G) approximate to 0.4. The measured value excludes a model(1) within the tensor-vector-scalar gravity theory(4,5), which modifies both Newtonian and Einstein gravity. However, the relatively large uncertainty still permits models within f(R) theory(6), which is an extension of general relativity. A fivefold decrease in uncertainty is needed to rule out these models. C1 [Reyes, Reinabelle; Mandelbaum, Rachel; Gunn, James E.] Princeton Univ Observ, Princeton, NJ 08544 USA. [Seljak, Uros; Baldauf, Tobias; Lombriser, Lucas; Smith, Robert E.] Univ Zurich, Inst Theoret Phys, CH-8057 Zurich, Switzerland. [Seljak, Uros] Univ Calif Berkeley, Dept Phys & Astron, Berkeley, CA 94720 USA. [Seljak, Uros] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Seljak, Uros] Ewha Womans Univ, Inst Early Universe, Seoul 120750, South Korea. RP Reyes, R (reprint author), Princeton Univ Observ, Peyton Hall, Princeton, NJ 08544 USA. EM rreyes@astro.princeton.edu RI Mandelbaum, Rachel/N-8955-2014 OI Mandelbaum, Rachel/0000-0003-2271-1527 FU NASA; Space Telescope Science Institute; Swiss National Foundation; German National Academic Foundation FX R. M. was supported for the duration of this work by NASA through a Hubble Fellowship grant awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA. U.S. acknowledges the Swiss National Foundation. T. B. acknowledges support by a grant from the German National Academic Foundation during the initial phase of this project. NR 22 TC 167 Z9 169 U1 1 U2 9 PU NATURE PUBLISHING GROUP PI LONDON PA MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND SN 0028-0836 J9 NATURE JI Nature PD MAR 11 PY 2010 VL 464 IS 7286 BP 256 EP 258 DI 10.1038/nature08857 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 566JO UT WOS:000275366100041 PM 20220843 ER PT J AU Aharrouche, M Adam-Bourdarios, C Aleksa, M Banfi, D Benchekroun, D Benslama, K Boonekamp, M Carli, T Carminati, L Chen, H Citterio, M Dannheim, D Delmastro, M Derue, F Di Girolamo, B El Kacimi, M Fanti, M Froeschl, R Fournier, D Grahn, KJ Kado, M Kerschen, N Lafaye, R Laforge, B Lampl, W Laplace, S Lechowski, M Lelas, D Liang, Z Loureiro, K Lund-Jensen, B Ma, H Mandelli, L Mazzanti, M McPherson, R Meng, Z Paganis, S Prieur, D Puzo, P Ridel, M Riu, I Rousseau, D Sauvage, G Schwemling, P Simion, S Spano, F Straessner, A Tarrade, F Tartarelli, F Thioye, M Unal, G Wilkens, H Wingerter-Seez, I Zhang, H AF Aharrouche, M. Adam-Bourdarios, C. Aleksa, M. Banfi, D. Benchekroun, D. Benslama, K. Boonekamp, M. Carli, T. Carminati, L. Chen, H. Citterio, M. Dannheim, D. Delmastro, M. Derue, F. Di Girolamo, B. El Kacimi, M. Fanti, M. Froeschl, R. Fournier, D. Grahn, K. -J. Kado, M. Kerschen, N. Lafaye, R. Laforge, B. Lampl, W. Laplace, S. Lechowski, M. Lelas, D. Liang, Z. Loureiro, K. Lund-Jensen, B. Ma, H. Mandelli, L. Mazzanti, M. McPherson, R. Meng, Z. Paganis, S. Prieur, D. Puzo, P. Ridel, M. Riu, I. Rousseau, D. Sauvage, G. Schwemling, P. Simion, S. Spano, F. Straessner, A. Tarrade, F. Tartarelli, F. Thioye, M. Unal, G. Wilkens, H. Wingerter-Seez, I. Zhang, H. TI Measurement of the response of the ATLAS liquid argon barrel calorimeter to electrons at the 2004 combined test-beam SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE ATLAS combined testbeam; Liquid argon calorimeter; Calorimeter linearity; Calorimeter uniformity; Calorimeter resolution AB During summer and fall 2004, the response of a full slice of the ATLAS barrel detector to different particles was studied in controlled beam. One module of the ATLAS liquid argon barrel calorimeter identical to the production modules and read out by the final front-end and back-end electronics was used for electromagnetic calorimetry. This paper presents and discusses the electron performance of the LAr barrel calorimeter, including linearity, uniformity, and resolution with different amounts of material upstream the calorimeter and energies ranging from 1 to 250 GeV. (C) 2010 Elsevier B.V. All rights reserved. C1 [Aleksa, M.; Carli, T.; Di Girolamo, B.; Froeschl, R.; Lampl, W.; Spano, F.; Wilkens, H.] CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland. [Aharrouche, M.; El Kacimi, M.; Lafaye, R.; Laplace, S.; Prieur, D.; Sauvage, G.; Tarrade, F.; Wingerter-Seez, I.] Univ Savoie, IN2P3, CNRS, Lab Annecy Le Vieux Phys Particules, Annecy Le Vieux, France. [Boonekamp, M.] Ctr Etud Saclay, CEA, DSM DAPNIA, F-91191 Gif Sur Yvette, France. [Adam-Bourdarios, C.; Fournier, D.; Kado, M.; Lechowski, M.; Lelas, D.; Puzo, P.; Rousseau, D.; Unal, G.] Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France. [Kerschen, N.; Paganis, S.] Univ Sheffield, Sheffield S3 7RH, S Yorkshire, England. [Grahn, K. -J.; Lund-Jensen, B.] Royal Inst Technol KTH, S-10691 Stockholm, Sweden. [McPherson, R.] Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 3P6, Canada. [Zhang, H.] Univ Aix Marseille 2, CNRS, IN2P3, Ctr Phys Particules Marseille, F-13288 Marseille, France. [Derue, F.; Laforge, B.; Ridel, M.; Schwemling, P.] Univ Paris 06, F-75252 Paris, France. [Derue, F.; Laforge, B.; Ridel, M.; Schwemling, P.] Univ Paris 07, Lab Phys Nucl & Hautes Energies, F-75252 Paris, France. [Riu, I.; Straessner, A.] Univ Geneva, CH-1211 Geneva 4, Switzerland. [Banfi, D.; Carminati, L.; Citterio, M.; Delmastro, M.; Fanti, M.; Mandelli, L.; Mazzanti, M.; Tartarelli, F.] INFN Sez Milano, I-20133 Milan, Italy. [Delmastro, M.; Fanti, M.; Mandelli, L.] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy. [Liang, Z.; Meng, Z.] Acad Sinica, Inst Phys, Taipei, Taiwan. [Benslama, K.; Dannheim, D.; Simion, S.] Columbia Univ, Nevis Labs, Irvington, NY 10533 USA. [Chen, H.; Ma, H.] Brookhaven Natl Lab, Upton, NY 11973 USA. [Thioye, M.] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Loureiro, K.] Ohio State Univ, Columbus, OH 43210 USA. [Zhang, H.] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China. [Liang, Z.] Sun Yat Sen Univ, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China. [Meng, Z.] Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China. RP Aleksa, M (reprint author), CERN, European Lab Particle Phys, CH-1211 Geneva 23, Switzerland. EM martin.aleksa@cern.ch RI Delmastro, Marco/I-5599-2012; Riu, Imma/L-7385-2014; Tartarelli, Giuseppe Francesco/A-5629-2016; OI Delmastro, Marco/0000-0003-2992-3805; Riu, Imma/0000-0002-3742-4582; Tartarelli, Giuseppe Francesco/0000-0002-4244-502X; PAGANIS, STATHES/0000-0002-1950-8993 NR 42 TC 19 Z9 19 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 11 PY 2010 VL 614 IS 3 BP 400 EP 432 DI 10.1016/j.nima.2009.12.055 PG 33 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 574PB UT WOS:000276001800006 ER PT J AU Shane, R Charity, RJ Elson, JM Sobotka, LG Devlin, M Fotiades, N O'Donnell, JM AF Shane, R. Charity, R. J. Elson, J. M. Sobotka, L. G. Devlin, M. Fotiades, N. O'Donnell, J. M. TI Total neutron cross-sections for rare isotopes using a digital-signal-processing technique: Case study Ca-48 SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT LA English DT Article DE n total cross-sections; Digital-signal processing ID DEPENDENCE; MODEL AB A digital-signal-processing method was developed and used to measure the total neutron cross-sections of Ca-48 from 15 to 300 MeV. This technique allows for cross-sections to be obtained with high statistical accuracy even for samples that are an order of magnitude smaller than those used with conventional (non-digital) techniques. The isotopic and energy dependence of rare-isotope total neutron cross-sections are of considerable value for extracting the n/p asymmetry dependence of optical-model potentials. (C) 2010 Elsevier B.V. All rights reserved. C1 [Charity, R. J.; Elson, J. M.; Sobotka, L. G.] Washington Univ, Dept Chem, St Louis, MO 63130 USA. [Shane, R.; Sobotka, L. G.] Washington Univ, Dept Phys, St Louis, MO 63130 USA. [Devlin, M.; Fotiades, N.; O'Donnell, J. M.] Los Alamos Natl Lab, LANSCE Div, Los Alamos, NM 87545 USA. RP Sobotka, LG (reprint author), Washington Univ, Dept Chem, Campus Box 1134, St Louis, MO 63130 USA. EM lgs@wustl.edu RI Devlin, Matthew/B-5089-2013; OI Devlin, Matthew/0000-0002-6948-2154; Charity, Robert/0000-0003-3020-4998 FU US Department of Energy, Division of Nuclear Physics [DE-FG02-87ER-40316, DE-AC5206NA25396] FX We would like to thank the entire management team of the National Superconducting Cyclotron Laboratory (NSCL) for their help in arranging the loan of the 48Ca sample. We further acknowledge the assistance of John Yurkon (of the NSCL) in the preparation of the target. This work was supported by the US Department of Energy, Division of Nuclear Physics under Grant DE-FG02-87ER-40316 (WU), and has benefited from the use of the Los Alamos Neutron Science Center, operated by Los Alamos National Security LLC under DOE Contract No. DE-AC5206NA25396. NR 17 TC 4 Z9 4 U1 0 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-9002 J9 NUCL INSTRUM METH A JI Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip. PD MAR 11 PY 2010 VL 614 IS 3 BP 468 EP 474 DI 10.1016/j.nima.2010.01.005 PG 7 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA 574PB UT WOS:000276001800012 ER PT J AU Lee, CU Roy, D Sumerlin, BS Dadmun, MD AF Lee, Chang-Uk Roy, Debashish Sumerlin, Brent S. Dadmun, Mark D. TI Facile synthesis of thiol-terminated poly(styrene-ran-vinyl phenol) (PSVPh) copolymers via reversible addition-fragmentation chain transfer (RAFT) polymerization and their use in the synthesis of gold nanoparticles with controllable hydrophilicity SO POLYMER LA English DT Article DE RAFT Polymerization; Thiol-terminated polymers; Gold nanoparticles ID RADICAL POLYMERIZATION; DIBLOCK COPOLYMERS; COMPOSITES; ADSORPTION; THERMODYNAMICS; POLYSTYRENE; CHEMISTRY; THICKNESS; POLYMERS; LOCATION AB A facile approach to prepare thiol-terminated poly(styrene-ran-vinyl phenol) (PSVPh) copolymers and PSVPh-coated gold nanoparticles is reported with the goal of creating stabilizing ligands for nanoparticles with controlled hydrophilicity Dithioester-terminated poly(styrene-ran-acetoxystyrene) copolymers were synthesized via RAFT polymerization using cumyl dithiobenzoate as a chain transfer agent. These copolymers were converted to thiol-terminated PSVPh copolymers by a one step hydrazinolysis reaction using hydrazine hydrate to simultaneously convert dithioester-terminal and acetoxypendant groups to thiol-terminal and hydroxyl-pendant groups, respectively Spectroscopic observations including NMR and IR confirm end- and pendant-group conversion. PSVPh-coated gold nanoparticles were synthesized in the presence of a mixture of thiol-terminated PSVPh and PSVPh copolymers containing disulfides as stabilizing ligands in a water/toluene, two-phase system The size and size distribution of core gold nanoparticles were determined by TEM and image analysis The hydrodynamic radius of PSVPh-coated gold nanoparticles was also determined by dynamic light scattering experiment, which confirms the particle analysis by TEM This procedure provides a facile technique to control the polarity and hydrophilicity of metal nanoparticle surfaces and could prove critical in advancing the control of nanoparticle placement in biological and hierarchically ordered systems, such as diblock copolymers (C) 2010 Elsevier Ltd. All rights reserved. C1 [Dadmun, Mark D.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Lee, Chang-Uk] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. [Dadmun, Mark D.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37830 USA. [Roy, Debashish; Sumerlin, Brent S.] So Methodist Univ, Dept Chem, Dallas, TX 75275 USA. RP Dadmun, MD (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RI Sumerlin, Brent/C-8924-2015 OI Sumerlin, Brent/0000-0001-5749-5444 FU National Science Foundation [DMR-0241214, DMR-0706323]; Division of Materials Sciences and Engineering, US Department of Energy FX This work was financially supported by National Science Foundation through grants DMR-0241214 and DMR-0706323 as well as by the Division of Materials Sciences and Engineering, US Department of Energy under contract with UT-Battelle, LLC. The authors would also like to thank Dr. John Dunlap in the Microscopy Facility at the University of Tennessee. Knoxville for imaging gold nanoparticles by TEM and helpful discussions regarding particle analysis NR 41 TC 21 Z9 22 U1 2 U2 32 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0032-3861 J9 POLYMER JI Polymer PD MAR 11 PY 2010 VL 51 IS 6 BP 1244 EP 1251 DI 10.1016/j.polymer.2010.01.033 PG 8 WC Polymer Science SC Polymer Science GA 571HQ UT WOS:000275743300006 ER PT J AU Adolf, DB Chambers, RS Hammerand, DC Tang, MY Westgate, K Gillick, J Skrypnyk, I AF Adolf, Douglas B. Chambers, Robert S. Hammerand, Daniel C. Tang, Ming-Ya Westgate, Kevin Gillick, Jim Skrypnyk, Ihor TI Modeling the response of monofilament nylon cords with the nonlinear viscoelastic, simplified potential energy clock model SO POLYMER LA English DT Article DE Nylon; Nonlinear viscoelasticity; Process history ID GLASSY-POLYMERS; FREE-VOLUME; THERMAL SHRINKAGE; POLY(ETHYLENE-TEREPHTHALATE) YARNS; THERMODYNAMICALLY CONSISTENT; ALIPHATIC POLYAMIDES; CONSTITUTIVE MODEL; STRESS-RELAXATION; FIBERS; BEHAVIOR AB The Simplified Potential Energy Clock Model has been previously shown to predict accurately glassy polymer responses such as yield, creep, enthalpy relaxation, and physical aging It was now used to predict the behavior of monofilament Nylon fiber Even though the fibers showed process-induced anisotropy, the simpler isotropic model could be used to describe uniaxial tests The model predictions again accurately predicted a wide range of Nylon experimental data (C) 2010 Elsevier Ltd. All rights reserved C1 [Adolf, Douglas B.] Ctr Sandia Natl Labs, Albuquerque, NM 87185 USA. [Chambers, Robert S.; Hammerand, Daniel C.] Sandia Natl Labs, Engn Sci Ctr, Albuquerque, NM 87185 USA. [Tang, Ming-Ya; Westgate, Kevin; Gillick, Jim] Goodyear Tire & Rubber Co, Global Mat Sci, Akron, OH 44305 USA. [Skrypnyk, Ihor] Goodyear Tire & Rubber Co, Tire Vehicle Mech, Akron, OH 44305 USA. RP Adolf, DB (reprint author), Ctr Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 46 TC 1 Z9 1 U1 0 U2 10 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0032-3861 EI 1873-2291 J9 POLYMER JI Polymer PD MAR 11 PY 2010 VL 51 IS 6 BP 1530 EP 1539 DI 10.1016/j.polymer.2010.01.030 PG 10 WC Polymer Science SC Polymer Science GA 571HQ UT WOS:000275743300041 ER PT J AU Yuan, F Schady, P Racusin, JL Willingale, R Kruhler, T O'Brien, PT Greiner, J Oates, SR Rykoff, ES Aharonian, F Akerlof, CW Ashley, MCB Barthelmy, SD Filgas, R Flewelling, HA Gehrels, N Gogus, E Guver, T Horns, D Kiziloglu, U Krimm, HA McKay, TA Ozel, ME Phillips, A Quimby, RM Rowell, G Rujopakarn, W Schaefer, BE Vestrand, WT Wheeler, JC Wren, J AF Yuan, F. Schady, P. Racusin, J. L. Willingale, R. Kruehler, T. O'Brien, P. T. Greiner, J. Oates, S. R. Rykoff, E. S. Aharonian, F. Akerlof, C. W. Ashley, M. C. B. Barthelmy, S. D. Filgas, R. Flewelling, H. A. Gehrels, N. Goegues, E. Guever, T. Horns, D. Kiziloglu, Ue. Krimm, H. A. McKay, T. A. Ozel, M. E. Phillips, A. Quimby, R. M. Rowell, G. Rujopakarn, W. Schaefer, B. E. Vestrand, W. T. Wheeler, J. C. Wren, J. TI GRB 081008: FROM BURST TO AFTERGLOW AND THE TRANSITION PHASE IN BETWEEN SO ASTROPHYSICAL JOURNAL LA English DT Article DE gamma-ray burst: individual (GRB 081008) ID GAMMA-RAY BURST; SWIFT XRT DATA; BAND SPECTRAL EVOLUTION; X-RAY; LIGHT CURVES; COMPREHENSIVE ANALYSIS; OPTICAL OBSERVATIONS; REFRESHED SHOCKS; ENERGY INJECTION; ENGINE ACTIVITY AB We present a multi-wavelength study of GRB 081008, at redshift 1.967, by Swift, ROTSE-III, and Gamma-Ray Burst Optical/NearInfrared Detector. Compared to other Swift GRBs, GRB 081008 has a typical gamma-ray isotropic equivalent energy output (similar to 10(53) erg) during the prompt phase, and displayed two temporally separated clusters of pulses. The early X-ray emission seen by the Swift X-Ray Telescope was dominated by the softening tail of the prompt emission, producing multiple flares during and after the Swift Burst Alert Telescope detections. Optical observations that started shortly after the first active phase of gamma-ray emission showed two consecutive peaks. We interpret the first optical peak as the onset of the afterglow associated with the early burst activities. A second optical peak, coincident with the later gamma-ray pulses, imposes a small modification to the otherwise smooth light curve and thus suggests a minimal contribution from a probable internal component. We suggest the early optical variability may be from continuous energy injection into the forward shock front by later shells producing the second epoch of burst activities. These early observations thus provide a potential probe for the transition from the prompt phase to the afterglow phase. The later light curve of GRB 081008 displays a smooth steepening in all optical bands and X-ray. The temporal break is consistent with being achromatic at the observed wavelengths. Our broad energy coverage shortly after the break constrains a spectral break within optical. However, the evolution of the break frequency is not observed. We discuss the plausible interpretations of this behavior. C1 [Yuan, F.; Akerlof, C. W.; McKay, T. A.] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. [Schady, P.; Oates, S. R.] Univ Coll London, Mullard Space Sci Lab, Surrey RH5 6NT, England. [Racusin, J. L.] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA. [Willingale, R.; O'Brien, P. T.] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England. [Kruehler, T.; Greiner, J.; Filgas, R.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Kruehler, T.] Tech Univ Munich, Univ Cluster, D-85748 Garching, Germany. [Rykoff, E. S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Aharonian, F.; Horns, D.; Rowell, G.] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany. [Ashley, M. C. B.; Phillips, A.] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia. [Barthelmy, S. D.; Gehrels, N.; Krimm, H. A.] NASA Goddard, Greenbelt, MD 20771 USA. [Flewelling, H. A.] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Goegues, E.] Sabanci Univ, Fac Engn & Nat Sci, TR-34956 Istanbul, Turkey. [Guever, T.; Rujopakarn, W.] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA. [Guever, T.; Rujopakarn, W.] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA. [Kiziloglu, Ue.] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey. [Ozel, M. E.] Cag Univ, Dept Math, TR-33800 Tarsus, Turkey. [Quimby, R. M.] CALTECH, Dept Astron, Pasadena, CA 91125 USA. [Schaefer, B. E.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. [Vestrand, W. T.; Wren, J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Wheeler, J. C.] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA. RP Yuan, F (reprint author), Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA. RI Guver, Tolga/C-1408-2011; Horns, Dieter/C-9727-2011; Racusin, Judith/D-2935-2012; Barthelmy, Scott/D-2943-2012; Gehrels, Neil/D-2971-2012; Rujopakarn, Wiphu/E-7849-2012; McKay, Timothy/C-1501-2009; Guver, Tolga/B-1039-2014; OI Rowell, Gavin/0000-0002-9516-1581; Flewelling, Heather/0000-0002-1050-4056; Kruehler, Thomas/0000-0002-8682-2384; McKay, Timothy/0000-0001-9036-6150; Guver, Tolga/0000-0002-3531-9842; Yuan, Fang/0000-0001-8315-4176; Rujopakarn, Wiphu/0000-0002-0303-499X FU NASA [NNX-08AN25G, NAS5-00136, NNX-08AV63G, PHY-0801007]; STFC; DFG; Australian Research Council; University of New South Wales; University of Texas; University of Michigan; Leibniz-Prize [HA 1850/28-1] FX F.Y. gratefully acknowledges useful discussions with S. B. Pandey. This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. F. Y. is supported by the NASA Swift Guest Investigator grants NNX-08AN25G. J.L.R. acknowledges support for this work from NASA contract NAS5-00136. R. W. and P.T.O. gratefully acknowledge funding from the STFC for Swift at the University of Leicester. T. K. acknowledges support by the DFG cluster of excellence "Origin and Structure of the Universe." ROTSE-III has been supported by NASA grant NNX-08AV63G, NSF grant PHY-0801007, the Australian Research Council, the University of New South Wales, the University of Texas, and the University of Michigan. Special thanks to the H. E. S. S. staff, especially Toni Hanke. Part of the funding for GROND (both hardware as well as personnel) was generously granted from the Leibniz-Prize (DFG grant HA 1850/28-1) to Professor G. Hasinger (IPP). NR 72 TC 18 Z9 18 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAR 10 PY 2010 VL 711 IS 2 BP 870 EP 880 DI 10.1088/0004-637X/711/2/870 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 559SN UT WOS:000274848100054 ER PT J AU Konopacky, QM Ghez, AM Barman, TS Rice, EL Bailey, JI White, RJ McLean, IS Duchene, G AF Konopacky, Q. M. Ghez, A. M. Barman, T. S. Rice, E. L. Bailey, J. I., III White, R. J. McLean, I. S. Duchene, G. TI HIGH-PRECISION DYNAMICAL MASSES OF VERY LOW MASS BINARIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: visual; brown dwarfs; stars: fundamental parameters; stars: low-mass; techniques: high angular resolution ID ADAPTIVE OPTICS SURVEY; BROWN DWARF COMPANION; T-DWARFS; ULTRACOOL DWARFS; GLIESE 569B; HR 8799; MODEL ATMOSPHERES; M6.0-M7.5 STARS; L/T TRANSITION; GIANT PLANETS AB We present the results of a three year monitoring program of a sample of very low mass (VLM) field binaries using both astrometric and spectroscopic data obtained in conjunction with the laser guide star adaptive optics system on the W. M. Keck II 10 m telescope. Among the 24 systems studied, 15 have undergone sufficient orbital motion, allowing us to derive their relative orbital parameters and hence their total system mass. These measurements more than double the number of mass measurements for VLM objects, and include the most precise mass measurement to date (<2%). Among the 11 systems with both astrometric and spectroscopic measurements, six have sufficient radial velocity variations to allow us to obtain individual component masses. This is the first derivation of the component masses for five of these systems. Altogether, the orbital solutions of these low mass systems show a correlation between eccentricity and orbital period, consistent with their higher mass counterparts. In our primary analysis, we find that there are systematic discrepancies between our dynamical mass measurements and the predictions of theoretical evolutionary models (TUCSON and LYON) with both models either underpredicting or overpredicting the most precisely determined dynamical masses. These discrepancies are a function of spectral type, with late-M through mid-L systems tending to have their masses underpredicted, while one T-type system has its mass overpredicted. These discrepancies imply that either the temperatures predicted by evolutionary and atmosphere models are inconsistent for an object of a given mass, or the mass-radius relationship or cooling timescales predicted by the evolutionary models are incorrect. If these spectral-type trends are correct and hold into the planetary mass regime, the implication is that the masses of directly imaged extrasolar planets are overpredicted by the evolutionary models. C1 [Konopacky, Q. M.; Ghez, A. M.; McLean, I. S.] Univ Calif Los Angeles, Div Astron & Astrophys, Los Angeles, CA 90095 USA. [Ghez, A. M.] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA. [Barman, T. S.] Lowell Observ, Flagstaff, AZ 86001 USA. [Rice, E. L.] Amer Museum Nat Hist, New York, NY 10024 USA. [Bailey, J. I., III] Univ Michigan, Dept Astron, Ann Arbor, MI 48105 USA. [White, R. J.] Georgia State Univ, Dept Phys & Astron, Atlanta, GA 30303 USA. [Duchene, G.] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. [Duchene, G.] Univ Grenoble 1, CNRS, Lab Astrophys Grenoble LAOG, UMR 5571, F-38041 Grenoble 9, France. RP Konopacky, QM (reprint author), Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA 94550 USA. EM konopacky1@llnl.gov; ghez@astro.ucla.edu; barman@lowell.edu; baileyji@umich.edu; white@chara.gsu.edu; mclean@astro.ucla.edu; gduchene@berkeley.edu RI Rice, Emily/G-4446-2013 OI Rice, Emily/0000-0002-3252-5886 FU NASA Astrobiology Institute; Packard Foundation; NSF Science & Technology Center for AO [AST-9876783]; U.S. Department of Energy by the Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; NASA [NNG05-GM05H]; National Science Foundation; W.M. Keck Foundation FX The authors thank observing assistants Joel Aycock, Heather Hershley, Carolyn Parker, Gary Puniwai, Julie Rivera, Chuck Sorenson, Terry Stickel, and Cynthia Wilburn, and support astronomers Randy Campbell, Al Conrad, Jim Lyke, and Hien Tran for their help in obtaining the observations. We thank Jessica Lu, Tuan Do, Sylvana Yelda, Marshall Perrin, and Will Clarkson for helpful discussions of this work. We also thank an anonymous referee for helpful suggestions for the improvement of this document. Support for this work was provided by the NASA Astrobiology Institute, the Packard Foundation, and the NSF Science & Technology Center for AO, managed by UCSC (AST-9876783). Portions of this work were performed under the auspices of the U.S. Department of Energy by the Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Q.M.K. acknowledges support from the NASA Graduate Student Research Program (NNG05-GM05H) through JPL and the UCLA Dissertation Year Fellowship Program. This publication makes use of data products from the 2MASS, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. The W.M. Keck Observatory is operated as a scientific partnership among the California Institute of Technology, the University of California and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors also recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. NR 71 TC 88 Z9 88 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 10 PY 2010 VL 711 IS 2 BP 1087 EP 1122 DI 10.1088/0004-637X/711/2/1087 PG 36 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 559SN UT WOS:000274848100010 ER PT J AU Luna, GJM Raymond, JC Brickhouse, NS Mauche, CW Proga, D Steeghs, D Hoogerwerf, R AF Luna, G. J. M. Raymond, J. C. Brickhouse, N. S. Mauche, C. W. Proga, D. Steeghs, D. Hoogerwerf, R. TI PHOTOIONIZED FEATURES IN THE X-RAY SPECTRUM OF EX HYDRAE SO ASTROPHYSICAL JOURNAL LA English DT Article DE binaries: close; novae, cataclysmic variables; stars: individual (EX Hydrae); X-rays: binaries ID WHITE-DWARF; CATACLYSMIC VARIABLES; INTERMEDIATE POLARS; SPECTROSCOPY; ACCRETION; EMISSION; HYA; DENSITY; SYSTEM; MODEL AB We present the first results from a long ( 496 ks) Chandra High Energy Transmission Grating observation of the intermediate polar EX Hydrae ( EX Hya). In addition to the narrow emission lines from the cooling post-shock gas, for the first time we have detected a broad component in some of the X-ray emission lines, namely, O VIII lambda 18.97, Mg XII lambda 8.42, Si XIV lambda 6.18, and Fe XVII lambda 16.78. The broad and narrow components have widths of similar to 1600 km s(-1) and similar to 150 km s(-1), respectively. We propose a scenario where the broad component is formed in the pre-shock accretion flow, photoionized by radiation from the post-shock flow. Because the photoionized region has to be close to the radiation source in order to produce strong photoionized emission lines from ions such as O VIII, Fe XVII, Mg XII, and Si XIV, our photoionization model constrains the height of the standing shock above the white dwarf surface. Thus, the X-ray spectrum from EX Hya manifests features of both magnetic and non-magnetic cataclysmic variables. C1 [Luna, G. J. M.; Raymond, J. C.; Brickhouse, N. S.] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA. [Mauche, C. W.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Proga, D.] Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA. [Steeghs, D.] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England. [Hoogerwerf, R.] Interact Supercomp Inc, Waltham, MA 02452 USA. RP Luna, GJM (reprint author), Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA. EM gluna@cfa.harvard.edu; jraymond@cfa.harvard.edu; nbrickhouse@cfa.harvard.edu; mauche@cygnus.llnl.gov; dproga@physics.unlv.edu; dsteeghs@cfa.harvard.edu; hoogerw@pobox.com RI Steeghs, Danny/C-5468-2009; OI Steeghs, Danny/0000-0003-0771-4746; Brickhouse, Nancy/0000-0002-8704-4473 FU NASA [GO7- 8026X, NAS8-03060]; U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX We thank the anonymous referee for useful comments which help to improve the final manuscript. We acknowledge support from NASA to the Smithsonian Astrophysical Observatory (SAO) under Chandra GO7- 8026X for G.J.M.L. C.W.M.'s contribution to this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. N.S.B. is supported by NASA Contract NAS8-03060 to SAO for the Chandra X-ray Center. NR 28 TC 5 Z9 5 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 10 PY 2010 VL 711 IS 2 BP 1333 EP 1337 DI 10.1088/0004-637X/711/2/1333 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 559SN UT WOS:000274848100029 ER PT J AU Adeleye, A Shohami, E Nachman, D Alexandrovich, A Trembovler, V Yaka, R Shoshan, Y Dhawan, J Biegon, A AF Adeleye, Amos Shohami, Esther Nachman, Dean Alexandrovich, Alexander Trembovler, Victoria Yaka, Rami Shoshan, Yigal Dhawan, Jasbeer Biegon, Anat TI D-Cycloserine improves functional outcome after traumatic brain injury with wide therapeutic window SO EUROPEAN JOURNAL OF PHARMACOLOGY LA English DT Article DE Glutamate; N-methyl-D-aspartate (NMDA) receptor; Neuroprotection; Head injury ID CLOSED-HEAD INJURY; EXCITATORY AMINO-ACIDS; LONG-TERM POTENTIATION; D-ASPARTATE RECEPTORS; NMDA ANTAGONISTS; ISCHEMIC-STROKE; DYNAMIC CHANGES; MOUSE MODEL; RAT; RECOVERY AB It has been long thought that hyperactivation of N-methyl-D-aspartate (NMDA) receptors underlies neurological decline after traumatic brain injury. However, all clinical trials with NMDA receptor antagonists failed. Since NMDA receptors are down-regulated from 4 h to 2 weeks after brain injury, activation at 24 h, rather than inhibition, of these receptors, was previously shown to be beneficial in mice. Here, we tested the therapeutic window, dose regimen and mechanism of action of the NMDA receptor partial agonist D-cycloserine (DCS) in traumatic brain injury. Male mice were subjected to trauma using a weight-drop model, and administered 10 mg/kg (i.p.) DCS or vehicle once (8, 16,24, or 72 h) twice (24 and 48 h) or three times (24, 48 and 72 h). Functional recovery was assessed for up to 60 days, using a Neurological Severity Score that measures neurobehavioral parameters. In all groups in which treatment was begun at 24 or 72 h neurobehavioral function was significantly better than in the vehicle-treated groups. Additional doses, on days 2 and 3 did not further improve recovery. Mice treated at 8 h or 16 h post injury did not differ from the vehicle-treated controls. Co-administration of the NMDA receptor antagonist MK-801 completely blocked the protective effect of DCS given at 24 h. Infarct volume measured by 2,3,5-triphenyltetrazolium chloride staining at 48 h or by cresyl violet at 28 days was not affected by DCS treatment. Since DCS is used clinically for other indications, the present study offers a novel approach for treating human traumatic brain injury with a therapeutic window of at least 24 h. (C) 2009 Elsevier B.V. All rights reserved. C1 [Adeleye, Amos; Shohami, Esther; Nachman, Dean; Alexandrovich, Alexander; Trembovler, Victoria; Yaka, Rami] Hebrew Univ Jerusalem, Sch Pharm, Dept Pharmacol, IL-91120 Jerusalem, Israel. [Adeleye, Amos; Nachman, Dean; Shoshan, Yigal] Hebrew Univ Jerusalem, Hadassah Hosp, Dept Neurosurg, IL-91120 Jerusalem, Israel. [Dhawan, Jasbeer; Biegon, Anat] Brookhaven Natl Lab, Dept Med, Upton, NY 11973 USA. RP Shohami, E (reprint author), Hebrew Univ Jerusalem, Sch Pharm, Dept Pharmacol, IL-91120 Jerusalem, Israel. EM esty@cc.huji.ac.il FU NIH [1R01NS050285]; IDF; Israel Ministry of Defense FX This study was Supported by NIH grant 1R01NS050285 (A. Biegon) and, in part, by a grant from the IDF and the Israel Ministry of Defense (E. Shohami). E. Shohami is the incumbent of the Dr. Leon and Dr. Mina Deutsch Chair in Psychopharmacology at The Hebrew University, and a member of the Brettler Center for Research in Molecular Pharmacology and Therapeutics, The Hebrew University. NR 52 TC 18 Z9 21 U1 3 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0014-2999 J9 EUR J PHARMACOL JI Eur. J. Pharmacol. PD MAR 10 PY 2010 VL 629 IS 1-3 BP 25 EP 30 DI 10.1016/j.ejphar.2009.11.066 PG 6 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA 561UN UT WOS:000275004900005 PM 19958766 ER PT J AU Ghajar, CM Kachgal, S Kniazeva, E Mori, H Costes, SV George, SC Putnam, AJ AF Ghajar, Cyrus M. Kachgal, Suraj Kniazeva, Ekaterina Mori, Hidetoshi Costes, Sylvain V. George, Steven C. Putnam, Andrew J. TI Mesenchymal cells stimulate capillary morphogenesis via distinct proteolytic mechanisms SO EXPERIMENTAL CELL RESEARCH LA English DT Article DE Capillary morphogenesis; Angiogenesis; Fibroblasts; Mesenchymal stem cells; Matrix metalloproteinases; Microenvironment ID MEMBRANE-TYPE-MATRIX; EXTRACELLULAR-MATRIX; ENDOTHELIAL-CELLS; STEM-CELLS; UROKINASE RECEPTOR; PROGENITOR CELLS; FIBRIN MATRICES; TUBE FORMATION; UP-REGULATION; IN-VITRO AB During angiogenesis, endothelial cells (ECs) degrade their surrounding extracellular matrix (ECM) to facilitate invasion How interactions between ECs and other cells within their microenvironment facilitate this process is only partially understood. We have utilized a tractable 3D co-culture model to investigate the proteolytic mechanisms by which pre-committed or more highly committed mesenchymal cells Stimulate capillary formation On their own. ECs invade their surrounding matrix, but do not form capillaries However, in the presence of either mesenchymal stem cells (MSCs) or fibroblasts, ECs form polarized, tubular Structures that are intimately associated with mesenchymal cells Further, ECS up-regulate gene expression of several extracellular proteases upon co-culture with either mesenchymal cell type. The administration of both broad spectrum and specific protease inhibitors demonstrated that MSC-stimulated capillary formation relied solely on membrane-type matrix metalloproteinases (MT-MMPs) while fibroblast-mediated sprouting proceeded independent of MMP inhibition unless the plasminogen activator/plasmin axis was inhibited in concert While other studies have established a role for the ECM itself in dictating proteolysis and matrix degradation during capillary morphogenesis, the present study Illustrates that heterotypic cellular interactions within the microenvironment can direct the proteolytic mechanisms required for capillary formation (c) 2010 Elsevier Inc All rights reserved C1 [Ghajar, Cyrus M.; Kachgal, Suraj; Kniazeva, Ekaterina; George, Steven C.; Putnam, Andrew J.] Univ Calif Irvine, Dept Biomed Engn, Irvine, CA 92697 USA. [Mori, Hidetoshi; Costes, Sylvain V.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Dept Canc & DNA Damage Responses, Berkeley, CA 94720 USA. [George, Steven C.; Putnam, Andrew J.] Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA. [Putnam, Andrew J.] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA. RP George, SC (reprint author), Univ Calif Irvine, Dept Biomed Engn, Engn Hall,Room 2420, Irvine, CA 92697 USA. RI Putnam, Andrew/E-8643-2010; Costes, Sylvain/D-2522-2013; George, Steven/K-9359-2015 OI Putnam, Andrew/0000-0002-1262-4377; Costes, Sylvain/0000-0002-8542-2389; George, Steven/0000-0003-2263-1914 FU NIH [R01 HL085339, R01 HL067954]; NSF [CBET-0644968]; ARCS Foundation; Arnold and Mabel Beckman Foundation FX We thank Dr. Mina J Bissell for contributing resources. We are grateful to Dr Martin Nakatsu and to Joseph Harris for aiding in RNA isolation and the design of primers used for RT-PCR. respectively. We are also grateful to Dr. Christopher Hughes, Dr. Chirag Khatiwala, Dr. Valeria Carolfa, Dr. Nicolai Sidenius, and Dr Christopher Raub for helpful discussions. This work was supported by grants from the NIH (R01 HL085339 to AJP and R01 HL067954 to SCG) and the NSF (CBET-0644968 to AJP) CMG was partially supported by a joint scholarship from the ARCS Foundation and Arnold and Mabel Beckman Foundation. NR 58 TC 63 Z9 64 U1 2 U2 19 PU ELSEVIER INC PI SAN DIEGO PA 525 B STREET, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0014-4827 J9 EXP CELL RES JI Exp. Cell Res. PD MAR 10 PY 2010 VL 316 IS 5 BP 813 EP 825 DI 10.1016/j.yexcr.2010.01.013 PG 13 WC Oncology; Cell Biology SC Oncology; Cell Biology GA 566IW UT WOS:000275364300013 PM 20067788 ER PT J AU Jiang, P Porsgaard, S Borondics, F Kober, M Caballero, A Bluhm, H Besenbacher, F Salmeron, M AF Jiang, Peng Porsgaard, Soeren Borondics, Ferenc Koeber, Mariana Caballero, Alfonso Bluhm, Hendrik Besenbacher, Flemming Salmeron, Miquel TI Room-Temperature Reaction of Oxygen with Gold: An In situ Ambient-Pressure X-ray Photoelectron Spectroscopy Investigation SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CO OXIDATION; ELECTRONIC-STRUCTURE; CATALYTIC-ACTIVITY; METAL-CLUSTERS; ACTIVE GOLD; NANOPARTICLES; SIZE; ADSORPTION; AU; NANOTECHNOLOGY AB The interaction of O-2 with gold foil and gold nanoparticles grown by thermal deposition on TiO2(110) was studied by in situ ambient pressure X-ray photoelectron spectroscopy at room temperature. No spontaneous dissociation of O-2 was observed either on Au foil or oil Au nanoparticles up to 1 Torr of O-2. X-ray irradiation, however, is very effective in promoting gold oxidation on both surfaces in the presence of O-2. Our results help reconcile recent conflicting experimental observations regarding the activation of molecular oxygen, which is a crucial issue in Au catalyzed oxidation reactions. C1 [Jiang, Peng; Porsgaard, Soeren; Koeber, Mariana; Caballero, Alfonso; Salmeron, Miquel] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Jiang, Peng; Salmeron, Miquel] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Porsgaard, Soeren; Besenbacher, Flemming] Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark. [Borondics, Ferenc; Bluhm, Hendrik] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. [Koeber, Mariana] Inst Microelect Madrid, Tres Cantos 28760, Spain. [Caballero, Alfonso] Univ Seville, CSIC, Inst Ciencia Mat, Seville, Spain. [Caballero, Alfonso] Univ Seville, CSIC, Dept Quim Inorgan, Seville, Spain. RP Salmeron, M (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM MBSalmeron@lbl.gov RI Besenbacher, Flemming/A-9623-2010; Kober, Mariana/A-8101-2010; Microelectronica de Madrid, Instituto de/D-5173-2013; Borondics, Ferenc/A-7616-2008; OI Kober, Mariana/0000-0001-9962-7900; Microelectronica de Madrid, Instituto de/0000-0003-4211-9045; Borondics, Ferenc/0000-0001-9975-4301 FU Department of Energy [DE-AC02-05CH11231]; Carlsbergs Mindelegat foundation; Spanish Council for Scientific Research FX This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, under the Department of Energy Contract No. DE-AC02-05CH11231. S.P. acknowledges the Carlsbergs Mindelegat foundation for financial support. M.K. was supported by the Spanish Council for Scientific Research through an I3P scholarship. We also thank Jinghua Guo and Zhi Liu for their helpful discussions. NR 34 TC 37 Z9 37 U1 2 U2 43 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 10 PY 2010 VL 132 IS 9 BP 2858 EP + DI 10.1021/ja909987j PG 4 WC Chemistry, Multidisciplinary SC Chemistry GA 570GO UT WOS:000275660500006 PM 20146473 ER PT J AU Harper, JK Doebbler, JA Jacques, E Grant, DM Von Dreele, RB AF Harper, James K. Doebbler, Jennifer A. Jacques, Elisabeth Grant, David M. Von Dreele, Robert B. TI A Combined Solid-State NMR and Synchrotron X-ray Diffraction Powder Study on the Structure of the Antioxidant (+)-Catechin 4.5-hydrate SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID CHEMICAL-SHIFT TENSORS; DIPOLAR-CORRELATION SPECTROSCOPY; OAK LEAF TANNINS; CRYSTAL-STRUCTURE; UNIT-CELL; MICROCRYSTALLINE SOLIDS; CONFORMATIONAL-ANALYSIS; SHIELDING CALCULATIONS; CORRELATION-ENERGY; HYDROGEN-BONDS AB Analyses combining X-ray powder diffraction (XRD) and solid-state NMR (SSNMR) data can now provide crystal structures in challenging powders that are inaccessible by traditional methods. The flavonoid catechin is an ideal candidate for these methods, as it has eluded crystallographic characterization despite extensive study. Catechin was first described nearly two centuries ago, and its powders exhibit numerous levels of hydration. Here, synchrotron XRD data provide all heavy-atom positions in (+)-catechin 4.5-hydrate and establish the space group as C2. SSNMR data (C-13 tensor and H-1/C-13 correlation) complete the conformation by providing catechin's five OH hydrogen orientations. Since 1903, this phase has been erroneously identified as a 4.0 hydrate, but XRD and density data establish that this discrepancy is due to the facile loss of the water molecule located at a Wyckoff special position in the unit cell. A final improvement to heavy-atom positions is provided by a geometry optimization of bond lengths and valence angles with XRD torsion angles held constant. The structural enhancement in this final structure is confirmed by the significantly improved fit of computed C-13 tensors to experimental data. C1 [Harper, James K.; Jacques, Elisabeth; Grant, David M.] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA. [Doebbler, Jennifer A.; Von Dreele, Robert B.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Grant, DM (reprint author), Univ Utah, Dept Chem, 315 South,1400 East, Salt Lake City, UT 84112 USA. EM grant@chem.utah.edu FU National Institutes of Health [5R01GM008521-46, NCRR 1 S10 RR17214-01]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX We thank Dr. Yuegang Zhang for assistance in analyzing earlier synchrotron powder diffraction data for catechin 4.5-hydrate. Funding for this work was provided by a grant from the National Institutes of Health (Grant No. 5R01GM008521-46). The computational resources for this project have been provided by the National Institutes of Health (Grant No. NCRR 1 S10 RR17214-01) on the Arches Metacluster, administered by the University of Utah Center for High Performance Computing. The use of the APS, beamline 11-BM, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under contract number DE-AC02-06CH11357. Cover art was furnished by Dr. Elizabeth M. Heider. NR 106 TC 20 Z9 20 U1 0 U2 11 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 10 PY 2010 VL 132 IS 9 BP 2928 EP 2937 DI 10.1021/ja907671p PG 10 WC Chemistry, Multidisciplinary SC Chemistry GA 570GO UT WOS:000275660500029 PM 20143807 ER PT J AU Walsh, MA Walter, SR Bevan, KH Geiger, FM Hersam, MC AF Walsh, Michael A. Walter, Stephanie R. Bevan, Kirk H. Geiger, Franz M. Hersam, Mark C. TI Phenylacetylene One-Dimensional Nanostructures on the Si(100)-2 x 1:H Surface SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID SUM-FREQUENCY GENERATION; SELF-DIRECTED GROWTH; SCANNING TUNNELING MICROSCOPE; RADICAL-CHAIN REACTION; 1D MOLECULAR LINES; VIBRATIONAL SPECTROSCOPY; SELECTIVE CHEMISORPTION; TERMINATED SI(100); ORGANIC MONOLAYER; SILICON SURFACES AB Using ultrahigh vacuum (UHV) scanning tunneling microscopy (STM), many olefins have been shown to self-assemble on the hydrogen-passivated Si(100)-2 x 1 surface into one-dimensional nanostructures. This paper demonstrates that similar one-dimensional nanostructures can also be realized using alkynes. In particular, UHV STM, sum frequency generation (SFG), and density functional theory (DFT) are employed to study the growth mechanism and binding configuration of phenylacetylene (PA) one-dimensional nanostructures on the Si(100)-2 x 1:H surface. Molecular-resolution UHV STM images reveal the binding position and spacing of PA with respect to the underlying silicon dimer rows. Furthermore, UHV STM characterization of heteromolecular one-dimensional nanostructures of styrene and PA shows distinct electronic contrast between the two molecules, which is confirmed using simulated STM images derived from DFT and provides insight into the nature of PA binding to silicon. Additional evidence from SFG measurements corroborates the conclusion that the terminal carbon atoms of PA retain pi-conjugation following reaction to the Si(100)-2 x 1:H surface. C1 [Walsh, Michael A.; Hersam, Mark C.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. [Walter, Stephanie R.; Geiger, Franz M.; Hersam, Mark C.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. [Bevan, Kirk H.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA. [Bevan, Kirk H.] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada. [Bevan, Kirk H.] McGill Univ, Ctr Phys Mat, Montreal, PQ H3A 2T8, Canada. RP Hersam, MC (reprint author), Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. EM m-hersam@northwestern.edu RI Hersam, Mark/B-6739-2009 FU National Science Foundation [EEC-0647560, DMR0520513, ECS-0506802]; Office of Naval Research [N00014-05-1-0563, N00014-09-1-0180]; Department of Energy [DE-SC0001785]; National Science Foundation Network tor Computational Nanotechnology (Purdue); NSERC of Canada; DOE [DF-FG02-05ER46209]; Division of Materials Sciences and Engineering, Office of Basic Energy Sciences. DOE (ORNL) FX This work was supported by the National Science Foundation (Award Numbers EEC-0647560. DMR0520513, and ECS-0506802). the Office of Naval Research (Award Numbers N00014-05-1-0563 and N00014-09-1-0180). and the Department of Energy (Award Number DE-SC0001785). The authors thank Dr. Joseph Lyding for the use of his electronics software and Dr. Lincoln Lauhon for helpful discussions. The authors also acknowledge computational support and resources provided by the National Science Foundation Network tor Computational Nanotechnology (Purdue). K.H.B. further acknowledges support from NSERC of Canada (McGill) and Support from the DOE under grant no. DF-FG02-05ER46209 and in part by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences. DOE (ORNL). NR 55 TC 26 Z9 26 U1 2 U2 25 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 10 PY 2010 VL 132 IS 9 BP 3013 EP 3019 DI 10.1021/ja909139n PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 570GO UT WOS:000275660500039 PM 20151637 ER PT J AU Rodriguez, JA Feria, L Jirsak, T Takahashi, Y Nakamura, K Illas, F AF Rodriguez, Jose A. Feria, Leticia Jirsak, Tomas Takahashi, Yoshiro Nakamura, Kenichi Illas, Francesc TI Role of Au-C Interactions on the Catalytic Activity of Au Nanoparticles Supported on TiC(001) toward Molecular Oxygen Dissociation SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID TRANSITION-METAL CARBIDES; DENSITY-FUNCTIONAL THEORY; DEFINED GOLD PARTICLES; FINDING SADDLE-POINTS; LOW-TEMPERATURE; ATOMIC OXYGEN; 001 SURFACE; SELECTIVE OXIDATION; PRECOVERED AU(111); ADSORPTION AB High-resolution photoemission and density functional calculations on realistic slab surface models were used to study the interaction and subsequent dissociation of O-2 with Au nanoparlicles supported on TiC(001). The photoemission results indicate that at 150 K O-2 adsorbs molecularly on the supported gold nanoparticles, and upon heating to temperatures above 200 K the O-2 -> 2O reaction takes place with migration of atomic oxygen to the TiC(001) substrate. The addition of Au to TiC(001) substantially enhances the rate of O-2 dissociation at room temperature. The reactivity of Au nanoparticles supported on TiC(001) toward O-2 dissociation is much larger than that of similar nanoparticles supported either on TiO2(110) or MgO(001) surfaces, where the cleavage of O-O bonds is very difficult. Density functional calculations carried out on large supercells show that the contact of Au with TiC(001) is essential for charge polarization and an enhancement in the chemical activity of Au. Small two-dimensional particles which expose Au atoms in contact with TiC(001) are the most reactive. While O-2 prefers binding to Au sites, the O atoms interact more strongly with the TiC(001) surface. The oxygen species active during the low-temperature (<200 K) oxidation of carbon monoxide on Au/TiC(001) is chemisorbed O-2. Once atomic O binds to TiC(001), the chemisorption bond is so strong that temperatures well above 400 K are necessary to remove the O adatoms from the TiC(001) substrate by direct reaction with CO. The high reactivity of Au/TiC(001) toward O-2 at low-temperature opens the route for the transformation of alcohols and amines on the supported Au nanoparticles. C1 [Rodriguez, Jose A.; Jirsak, Tomas] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. [Feria, Leticia; Illas, Francesc] Univ Barcelona, Dept Quim Fis & Inst Quim Teor & Computac IQTCUB, E-08028 Barcelona, Spain. [Takahashi, Yoshiro; Nakamura, Kenichi] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 22658503, Japan. RP Rodriguez, JA (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM rodrigez@bnl.gov; francesc.illas@ub.edu RI Illas, Francesc /C-8578-2011 OI Illas, Francesc /0000-0003-2104-6123 FU US Department of Energy; Chemical Sciences Division; Generalitat de Catalunya [2006PIV009, 2009SGRI041]; ICyTDF; Nippon Foundation; MICINN [FIS2008-02238/FIS]; XRQTC FX The authors are grateful to B. Roldan-Cuenya (University of Central Florida) and J. Gonics (Universidade do Porto) for thought-provoking discussions about the properties ol'Au/TiC. The research carried out at BNL was supported by the US Department of Energy, Chemical Sciences Division. J.A.R. acknowledges the support of the Generalitat de Catalunya in a visit to the Universitat de Barcelona (2006PIV009). L.F. is grateful to ICyTDF for a Postdoctoral Fellowship. K.N. is grateful to the Nippon Foundation for Materials Science for grants that made possible part of this work, and F.I. acknowledges financial support through Spanish MICINN grant FIS2008-02238/FIS and partial support from Generalitat de Catalunya grants 2009SGRI041 and XRQTC. Generous allocation of computational time on the Marenostrum supercomputer of the Barcelona Supercomputing Center is gratefully acknowledged. NR 63 TC 52 Z9 53 U1 6 U2 48 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 10 PY 2010 VL 132 IS 9 BP 3177 EP 3186 DI 10.1021/ja910146g PG 10 WC Chemistry, Multidisciplinary SC Chemistry GA 570GO UT WOS:000275660500057 PM 20143811 ER PT J AU Potdar, AA Jeon, J Weaver, AM Quaranta, V Cummings, PT AF Potdar, Alka A. Jeon, Junhwan Weaver, Alissa M. Quaranta, Vito Cummings, Peter T. TI Human Mammary Epithelial Cells Exhibit a Bimodal Correlated Random Walk Pattern SO PLOS ONE LA English DT Article ID FLIGHT SEARCH PATTERNS; WANDERING ALBATROSSES; SCALING LAWS; LEVY WALK; DISTRIBUTIONS; STRATEGIES; SIMULATION; MIGRATION; DISPERSAL; MOVEMENTS AB Background: Organisms, at scales ranging from unicellular to mammals, have been known to exhibit foraging behavior described by random walks whose segments confirm to Levy or exponential distributions. For the first time, we present evidence that single cells (mammary epithelial cells) that exist in multi-cellular organisms (humans) follow a bimodal correlated random walk (BCRW). Methodology/Principal Findings: Cellular tracks of MCF-10A pBabe, neuN and neuT random migration on 2-D plastic substrates, analyzed using bimodal analysis, were found to reveal the BCRW pattern. We find two types of exponentially distributed correlated flights (corresponding to what we refer to as the directional and re-orientation phases) each having its own correlation between move step-lengths within flights. The exponential distribution of flight lengths was confirmed using different analysis methods (logarithmic binning with normalization, survival frequency plots and maximum likelihood estimation). Conclusions/Significance: Because of the presence of non-uniform turn angle distribution of move step-lengths within a flight and two different types of flights, we propose that the epithelial random walk is a BCRW comprising of two alternating modes with varying degree of correlations, rather than a simple persistent random walk. A BCRW model rather than a simple persistent random walk correctly matches the super-diffusivity in the cell migration paths as indicated by simulations based on the BCRW model. C1 [Potdar, Alka A.; Jeon, Junhwan; Cummings, Peter T.] Vanderbilt Univ, Dept Chem & Biomol Engn, Nashville, TN 37203 USA. [Potdar, Alka A.; Jeon, Junhwan; Weaver, Alissa M.; Quaranta, Vito; Cummings, Peter T.] Vanderbilt Integrat Canc Biol Ctr, Nashville, TN USA. [Weaver, Alissa M.; Quaranta, Vito] Vanderbilt Univ, Med Ctr, Dept Canc Biol, Nashville, TN USA. [Cummings, Peter T.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN USA. RP Potdar, AA (reprint author), Vanderbilt Univ, Dept Chem & Biomol Engn, Nashville, TN 37203 USA. EM peter.cummings@vanderbilt.edu RI Potdar, Alka/E-6882-2012; Quaranta, Vito/G-6512-2016; Cummings, Peter/B-8762-2013 OI Quaranta, Vito/0000-0001-7491-8672; Cummings, Peter/0000-0002-9766-2216 FU National Cancer Institute grant [5U54CA113007-02] FX This study was funded by National Cancer Institute grant: Multiscale Mathematical Modeling of Cancer Invasion (grant number: 5U54CA113007-02). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 37 TC 19 Z9 19 U1 0 U2 9 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAR 10 PY 2010 VL 5 IS 3 AR e9636 DI 10.1371/journal.pone.0009636 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 565XE UT WOS:000275328800030 PM 20224792 ER PT J AU Price, MN Dehal, PS Arkin, AP AF Price, Morgan N. Dehal, Paramvir S. Arkin, Adam P. TI FastTree 2-Approximately Maximum-Likelihood Trees for Large Alignments SO PLOS ONE LA English DT Article ID MINIMUM-EVOLUTION PRINCIPLE; PHYLOGENETIC INFERENCE; DNA-SEQUENCES; ALGORITHM; ACCURATE; RECONSTRUCTION; CONFIDENCE; BOOTSTRAP; DATABASE; NUMBER AB Background: We recently described FastTree, a tool for inferring phylogenies for alignments with up to hundreds of thousands of sequences. Here, we describe improvements to FastTree that improve its accuracy without sacrificing scalability. Methodology/Principal Findings: Where FastTree 1 used nearest-neighbor interchanges (NNIs) and the minimum-evolution criterion to improve the tree, FastTree 2 adds minimum-evolution subtree-pruning-regrafting (SPRs) and maximum-likelihood NNIs. FastTree 2 uses heuristics to restrict the search for better trees and estimates a rate of evolution for each site (the "CAT" approximation). Nevertheless, for both simulated and genuine alignments, FastTree 2 is slightly more accurate than a standard implementation of maximum-likelihood NNIs (PhyML 3 with default settings). Although FastTree 2 is not quite as accurate as methods that use maximum-likelihood SPRs, most of the splits that disagree are poorly supported, and for large alignments, FastTree 2 is 100-1,000 times faster. FastTree 2 inferred a topology and likelihood-based local support values for 237,882 distinct 16S ribosomal RNAs on a desktop computer in 22 hours and 5.8 gigabytes of memory. Conclusions/Significance: FastTree 2 allows the inference of maximum-likelihood phylogenies for huge alignments. FastTree 2 is freely available at http://www.microbesonline.org/fasttree. C1 [Price, Morgan N.; Dehal, Paramvir S.; Arkin, Adam P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Price, Morgan N.; Dehal, Paramvir S.; Arkin, Adam P.] Univ Calif Berkeley, Lawrence Berkeley Lab, Virtual Inst Microbial Stress & Survival, Berkeley, CA 94720 USA. [Arkin, Adam P.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. RP Price, MN (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. EM MorganNPrice@yahoo.com RI Arkin, Adam/A-6751-2008 OI Arkin, Adam/0000-0002-4999-2931 FU US Department of Energy Genomics [DE-AC02-05CH11231] FX This work was supported by a grant from the US Department of Energy Genomics: GTL program (DE-AC02-05CH11231). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. NR 34 TC 1409 Z9 1419 U1 31 U2 173 PU PUBLIC LIBRARY SCIENCE PI SAN FRANCISCO PA 185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA SN 1932-6203 J9 PLOS ONE JI PLoS One PD MAR 10 PY 2010 VL 5 IS 3 AR e9490 DI 10.1371/journal.pone.0009490 PG 10 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 565XE UT WOS:000275328800002 PM 20224823 ER PT J AU Park, AY Jergic, S Politis, A Ruotolo, BT Hirshberg, D Jessop, LL Beck, JL Barsky, D O'Donnell, M Dixon, NE Robinson, CV AF Park, Ah Young Jergic, Slobodan Politis, Argyris Ruotolo, Brandon T. Hirshberg, Daniel Jessop, Linda L. Beck, Jennifer L. Barsky, Daniel O'Donnell, Mike Dixon, Nicholas E. Robinson, Carol V. TI A Single Subunit Directs the Assembly of the Escherichia coli DNA Sliding Clamp Loader SO STRUCTURE LA English DT Article ID POLYMERASE-III HOLOENZYME; CHROMOSOMAL REPLICATION MACHINE; PROTEIN-PROTEIN INTERACTIONS; MASS-SPECTROMETRY; ACCESSORY PROTEINS; DISTINCT DOMAINS; GAMMA-SUBUNIT; TAU-BINDS; MACROMOLECULAR ASSEMBLIES; C-TERMINUS AB Multi-protein clamp loader complexes are required to load sliding clamps onto DNA. In Escherichia coli the clamp loader contains three DnaX (tau/gamma) proteins, delta, and delta', which together form an asymmetric pentameric ring that also interacts with psi chi. Here we used mass spectrometry to examine the assembly and dynamics of the clamp loader complex. We find that gamma exists exclusively as a stable homotetramer, while tau is in a monomer-dimer-trimer-tetramer equilibrium. delta' plays a direct role in the assembly as tau/gamma oligomer breaker, thereby facilitating incorporation of lower oligomers. With delta', both delta and psi chi stabilize the trimeric form of DnaX, thus completing the assembly. When tau and gamma are present simultaneously, mimicking the situation in vivo, subunit exchange between tau and gamma tetramers occurs rapidly to form heterocomplexes but is retarded when delta delta' is present. The implications for intracellular assembly of the DNA polymerase III holoenzyme are discussed. C1 [Park, Ah Young; Politis, Argyris; Robinson, Carol V.] Univ Oxford, Dept Chem, Oxford OX1 3QZ, England. [Park, Ah Young; Politis, Argyris; Ruotolo, Brandon T.; Hirshberg, Daniel; Barsky, Daniel; Robinson, Carol V.] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England. [Jergic, Slobodan; Jessop, Linda L.; Beck, Jennifer L.; Dixon, Nicholas E.] Univ Wollongong, Sch Chem, Wollongong, NSW 2522, Australia. [Ruotolo, Brandon T.] Univ Michigan, Dept Chem, Ann Arbor, MI 48109 USA. [Barsky, Daniel] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA 94550 USA. [O'Donnell, Mike] Rockefeller Univ, Howard Hughes Med Inst, New York, NY 10065 USA. RP Robinson, CV (reprint author), Univ Oxford, Dept Chem, S Parks Rd, Oxford OX1 3QZ, England. EM carol.robinson@chem.ox.ac.uk RI Ruotolo, Brandon/F-2669-2013; Dixon, Nicholas/A-1226-2008; Hirschberg, Daniel/J-3133-2014; Beck, Jennifer/B-6151-2016; OI Ruotolo, Brandon/0000-0002-6084-2328; Dixon, Nicholas/0000-0002-5958-6945; Hirschberg, Daniel/0000-0002-1136-9802; Beck, Jennifer/0000-0001-6058-4886; O'Donnell, Michael/0000-0001-9002-4214 FU Biotechnology and Biological Sciences Research Council; Royal Society; Walter's Kundert Trust; Australian Research Council; Australian Professorial Fellowship; Lawrence Livermore National Laboratory FX We acknowledge funding from the Biotechnology and Biological Sciences Research Council (to A.Y.P., A.P., and D,B.), the Royal Society and Walter's Kundert Trust (to C.V.R,), the Australian Research Council (to J.L.B.) and Australian Professorial Fellowship (to N.E.D), and Waters (B.T.R.) and sabbatical funding from Lawrence Livermore National Laboratory (to D.B.). NR 41 TC 11 Z9 11 U1 0 U2 7 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0969-2126 J9 STRUCTURE JI Structure PD MAR 10 PY 2010 VL 18 IS 3 BP 285 EP 292 DI 10.1016/j.str.2010.01.009 PG 8 WC Biochemistry & Molecular Biology; Biophysics; Cell Biology SC Biochemistry & Molecular Biology; Biophysics; Cell Biology GA 568AD UT WOS:000275492000005 PM 20223211 ER PT J AU Shi, X Yang, J Bai, SQ Yang, JH Wang, H Chi, MF Salvador, JR Zhang, WQ Chen, LD Wong-Ng, W AF Shi, Xun Yang, Jiong Bai, Shengqiang Yang, Jihui Wang, Hsin Chi, Miaofang Salvador, James R. Zhang, Wenqing Chen, Lidong Wong-Ng, Winnie TI On the Design of High-Efficiency Thermoelectric Clathrates through a Systematic Cross-Substitution of Framework Elements SO ADVANCED FUNCTIONAL MATERIALS LA English DT Article ID AUGMENTED-WAVE METHOD; TRANSPORT-PROPERTIES; SKUTTERUDITE ANTIMONIDES; PHONON-GLASS; BA8GA16GE30; MERIT; SEMICONDUCTOR; BA8GA16SI30; PERFORMANCE; BA8IN16SN30 AB Type I clathrates have recently been identified as prospective thermoelectric materials for power generation purposes due to their very low lattice thermal conductivity values. The maximum thermoelectric figure of merit of almost all type I clathrates is, however, less than 1 and occurs at, or above, 1000 K, making them unfavorable especially for intermediate temperature applications. In this report, the Zintl-Klemm rule is demonstrated to be valid for Ni, Cu, and Zn transition metal substitution in the framework of type I clathrates and offers many degrees of freedom for material modification, design, and optimization. The cross-substitution of framework elements introduces ionized impurities and lattice defects into these materials, which optimize the scattering of charge carriers by the substitution-induced ionized impurities and the scattering of heat-carrying lattice phonons by point defects, respectively, leading to an enhanced power factor, reduced lattice thermal conductivity, and therefore improved thermoelectric figure of merit. Most importantly, the bandgap of these materials can be tuned between 0.1 and 0.5 eV by adjusting the cross-substitution ratio of framework elements, making it possible to design clathrates with excellent thermoelectric properties between 500 and 1000 K. C1 [Shi, Xun; Yang, Jiong; Salvador, James R.] Gen Motors R&D Ctr, Mat & Proc Lab, Warren, MI 48090 USA. [Yang, Jiong; Bai, Shengqiang; Zhang, Wenqing; Chen, Lidong] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China. [Shi, Xun] Optimal Inc, Plymouth, MI 48170 USA. [Wang, Hsin; Chi, Miaofang] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. [Wong-Ng, Winnie] Natl Inst Stand & Technol, Mat Sci & Engn Lab, Gaithersburg, MD 20899 USA. RP Shi, X (reprint author), Gen Motors R&D Ctr, Mat & Proc Lab, Warren, MI 48090 USA. EM jihui.yang@gm.com; wqzhang@mail.sic.ac.cn; cld@mail.sic.ac.cn RI Yang, Jihui/A-3109-2009; shi, xun/B-4499-2009; Chen, Lidong/F-2705-2010; Zhang, Wenqing/K-1236-2012; Yang, Jiong/K-6330-2014; Chi, Miaofang/Q-2489-2015; Wang, Hsin/A-1942-2013 OI shi, xun/0000-0002-3806-0303; Yang, Jiong/0000-0002-5862-5981; Chi, Miaofang/0000-0003-0764-1567; Wang, Hsin/0000-0003-2426-9867 FU DOE [DE-FC26-04NT42278]; Assistant Secretary for Energy Efficiency and Renewable Energy; UT-Battelle LLC; Department of Energy [DEAC05000OR22725]; National Basic Research Program of China [2007CB607503]; NSFC [50825205, 50672118, 50821004, 50820145203, 10634070] FX X. Shi and Jiong Yang contributed equally to this work. XS, JRS, and JY would like to thank Drs. J. F. Herbst and M. W. Verbrugge for continuous support and encouragement, Richard A. Waldo for EPMA measurements, and Richard L. Speer Jr. for X-ray measurements. The work is supported by GM and by DOE under corporate agreement DE-FC26-04NT42278, by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Transportation Technologies as part of the High Temperature Materials Laboratory User Program at Oak Ridge National Laboratory managed by the UT-Battelle LLC, for the Department of Energy under contract DEAC05000OR22725. WZ and LC acknowledge the financial support from National Basic Research Program of China (973-program) under Project No. 2007CB607503 and NSFC projects (50825205, 50672118, 50821004, 50820145203, and 10634070). NR 56 TC 92 Z9 94 U1 12 U2 84 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA POSTFACH 101161, 69451 WEINHEIM, GERMANY SN 1616-301X EI 1616-3028 J9 ADV FUNCT MATER JI Adv. Funct. Mater. PD MAR 9 PY 2010 VL 20 IS 5 BP 755 EP 763 DI 10.1002/adfm.200901817 PG 9 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573TE UT WOS:000275937000009 ER PT J AU He, JQ Girard, SN Kanatzidis, MG Dravid, VP AF He, Jiaqing Girard, Steven N. Kanatzidis, Mercouri G. Dravid, Vinayak P. TI Microstructure-Lattice Thermal Conductivity Correlation in Nanostructured PbTe0.7S0.3 Thermoelectric Materials SO ADVANCED FUNCTIONAL MATERIALS LA English DT Article ID SPINODAL DECOMPOSITION; ENERGY-CONVERSION; POWER-GENERATION; ROOM-TEMPERATURE; SOLID-SOLUTIONS; LEAD-TELLURIDE; LORENZ NUMBER; PBTE; MERIT; AGPBMSBTE2+M AB The reduction of thermal conductivity, and a comprehensive understanding of the microstructural constituents that cause this reduction, represent some of the important challenges for the further development of thermoelectric materials with improved figure of merit. Model PbTe-based thermoelectric materials that exhibit very low lattice thermal conductivity have been chosen for this microstructure-thermal conductivity correlation study. The nominal PbTe0.7S0.3 composition spinodally decomposes into two phases: PbTe and PbS. Orderly misfit dislocations, incomplete relaxed strain, and structure-modulated contrast rather than composition-modulated contrast are observed at the boundaries between the two phases. Furthermore, the samples also contain regularly shaped nanometer-scale precipitates. The theoretical calculations of the lattice thermal conductivity of the PbTe0.7S0.3 material, based on transmission electron microscopy observations, closely aligns with experimental measurements of the thermal conductivity of a very low value, similar to 0.8 W m(-1) K-1 at room temperature, approximately 35% and 30% of the value of the lattice thermal conductivity of either PbTe and PbS, respectively. It is shown that phase boundaries, interfacial dislocations, and nanometer-scale precipitates play an important role in enhancing phonon scattering and, therefore, in reducing the lattice thermal conductivity. C1 [He, Jiaqing; Girard, Steven N.; Kanatzidis, Mercouri G.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. [He, Jiaqing; Dravid, Vinayak P.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. [Kanatzidis, Mercouri G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. RP He, JQ (reprint author), Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. EM m-kanatzidis@northwestern.edu; v-dravid@northwestern.edu RI Dravid, Vinayak/B-6688-2009; He, Jiaqing/A-2245-2010 FU office of Naval Research; NSF-NSEC; NSF-MRSEC; Keck Foundation; State of Illinois; Northwestern University FX Financial support from the office of Naval Research is gratefully acknowledged. Transmission electron microscopy work was performed in the (EPIC) (NIFTI) (Keck-II) facility of the NUANCE Center at Northwestern University. The NUANCE Center is supported by NSF-NSEC, NSF-MRSEC, Keck Foundation, the State of Illinois, and Northwestern University. NR 56 TC 121 Z9 121 U1 13 U2 93 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY SN 1616-301X J9 ADV FUNCT MATER JI Adv. Funct. Mater. PD MAR 9 PY 2010 VL 20 IS 5 BP 764 EP 772 DI 10.1002/adfm.200901905 PG 9 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 573TE UT WOS:000275937000010 ER PT J AU Krasavin, M Rufanov, KA Sosnov, AV Karapetian, R Godovykh, E Soldatkina, O Lavrovsky, Y Gakh, AA AF Krasavin, Mikhail Rufanov, Konstantin A. Sosnov, Andrey V. Karapetian, Ruben Godovykh, Elena Soldatkina, Olga Lavrovsky, Yan Gakh, Andrei A. TI Discovery and SAR exploration of N-aryl-N-(3-aryl-1,2,4-oxadiazol-5-yl)amines as potential therapeutic agents for prostate cancer SO CHEMISTRY CENTRAL JOURNAL LA English DT Article AB A new chemical series of antiproliferative compounds was identified via high-throughput screening on DU-145 human prostate carcinoma cell line (hit compound potency 5.7 mu M). Exploration of the two peripheral diversity vectors of the hit molecule in a hit-targeted library and testing of the resulting compounds led to SAR generalizations and identification of the 'best' pharmacophoric moieties. The latter were merged in a single compound that exhibited a 200-fold better potency than the original hit compound. Specific cancer cell cytotoxicity was confirmed for the most potent compounds. C1 [Krasavin, Mikhail; Rufanov, Konstantin A.] Chem Div Res Inst, Dept Med Chem, Chimki 141400, Moscow Reg, Russia. [Sosnov, Andrey V.] Chem Div Res Inst, Innovat Dept, Chimki 141400, Moscow Reg, Russia. [Karapetian, Ruben; Godovykh, Elena; Soldatkina, Olga; Lavrovsky, Yan] Chem Div Res Inst, Dept Lead Discovery, Chimki 141400, Moscow Reg, Russia. [Gakh, Andrei A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Rufanov, KA (reprint author), Chem Div Res Inst, Dept Med Chem, 2A Rabochaya St, Chimki 141400, Moscow Reg, Russia. EM kruf@iihr.ru; sva@iihr.ru; rk@chemdiv.com; gakhaa@yahoo.com RI Krasavin, Mikhail/F-2343-2011; OI Krasavin, Mikhail/0000-0002-0200-4772 FU International Science and Technology Center (ISTC); U.S. Department of Energy [DE-AC05-00OR22725] FX This research was supported by the Global IPP program through the International Science and Technology Center (ISTC). Oak Ridge National Laboratory is managed and operated by UT-Battelle, LLC, under U.S. Department of Energy contract DE-AC05-00OR22725. This paper is a contribution from the Discovery Chemistry Project. NR 8 TC 9 Z9 9 U1 0 U2 2 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1752-153X J9 CHEM CENT J JI Chem. Cent. J. PD MAR 9 PY 2010 VL 4 AR 4 DI 10.1186/1752-153X-4-4 PG 7 WC Chemistry, Multidisciplinary SC Chemistry GA 580OZ UT WOS:000276460100001 PM 20214785 ER PT J AU Woo, CH Holcombe, TW Unruh, DA Sellinger, A Frechet, JMJ AF Woo, Claire H. Holcombe, Thomas W. Unruh, David A. Sellinger, Alan Frechet, Jean M. J. TI Phenyl vs Alkyl Polythiophene: A Solar Cell Comparison Using a Vinazene Derivative as Acceptor SO CHEMISTRY OF MATERIALS LA English DT Article ID OPEN-CIRCUIT VOLTAGE; ENERGY-CONVERSION EFFICIENCY; POLYMER PHOTOVOLTAIC DEVICES; SUBSTITUTED POLYTHIOPHENES; PHOTOCURRENT GENERATION; CONJUGATED POLYMERS; CHARGE-TRANSPORT; DESIGN RULES; BULK; BLENDS AB The solar cell performance of poly[3-(4-n-octyl)-phenylthiophene] (POPT) and poly(3-hexylthiophene) (P3HT) are compared in devices using 4,7-bis(2-(1-(2-ethylhexyl)-4,5-dicyanomidazol-2-yl)vinyl)benzo[c][1,2,5]-thiadiazole (EV-BT) as the electron acceptor. Despite their reduced light absorption, POPT EV-BT devices generate higher photocurrents in both bilayer and bulk heterojunction (BHJ) architectures than analogous P3HT.EV-BT devices. Optimized POPT EV-BT BHJ devices achieve 1 4% average efficiency, whereas the analogous P3HT devices only reach 1.1% Morphology does not account for the large difference in performance as AFM studies of the active layer suggest comparable levels of phase separation in the two systems Reverse bias analysis demonstrates that P3HT devices have a higher maximum potential than POPT devices, but P3HT devices appear to be more Severely limited by recombination losses under standard operating conditions. A possible explanation for the superior performance in POPT devices is that the pendant phenyl ring in POPT can twist out-of-plane and Increase the Separation distance with the acceptor molecule A larger donor/acceptor separation distance can destabilize the geminate pair and lead to more efficient charge separation in POPT.EV-BT devices. Our results emphasize the importance of donor/acceptor pair interactions and its effect on charge separation processes in polymer solar cells. C1 [Woo, Claire H.; Holcombe, Thomas W.; Unruh, David A.; Frechet, Jean M. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Woo, Claire H.; Holcombe, Thomas W.; Unruh, David A.; Frechet, Jean M. J.] Univ Calif Berkeley, Coll Chem, Berkeley, CA 94720 USA. [Sellinger, Alan] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA. RP Frechet, JMJ (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RI Sellinger, Alan/C-6250-2015; OI Sellinger, Alan/0000-0001-6705-1548; Frechet, Jean /0000-0001-6419-0163 FU U S. Department of Energy [DE-AC02-05CH11231]; Center for Advanced Molecular Photovoltaics [KUS-CI-015-21]; King Abdullah University of Science and Technology (KAUST); National Science Foundation FX This work was supported by the U S. Department of Energy under Contract No DE-AC02-05CH11231 and by the Center for Advanced Molecular Photovoltaics (Award No KUS-CI-015-21), supported by King Abdullah University of Science and Technology (KAUST) C H W and T.W.H thank the National Science Foundation For Fellowship support NR 46 TC 97 Z9 98 U1 3 U2 30 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD MAR 9 PY 2010 VL 22 IS 5 BP 1673 EP 1679 DI 10.1021/cm903067a PG 7 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 560UO UT WOS:000274929000011 ER PT J AU Enderlein, C Kim, YS Bostwick, A Rotenberg, E Horn, K AF Enderlein, C. Kim, Y. S. Bostwick, A. Rotenberg, E. Horn, K. TI The formation of an energy gap in graphene on ruthenium by controlling the interface SO NEW JOURNAL OF PHYSICS LA English DT Article ID EPITAXIAL GRAPHENE; ELECTRONIC-STRUCTURE; SUSPENDED GRAPHENE; RU(0001); BANDGAP; ORIGIN AB In this work, we have investigated the spectral function of graphene on a monolayer of intercalated gold on Ru(0001) using angle-resolved photoemission spectroscopy (ARPES). The intercalation leads to a decoupling of the graphene film, as documented by emergence of the characteristic linear pi-bands near the Fermi level. However, a band gap at the band crossing is observed. We relate this gap opening to the broken symmetry of the two carbon sublattices, induced by the special lattice mismatch of the graphene and the intercalated gold monolayer. C1 [Enderlein, C.; Kim, Y. S.; Bostwick, A.; Rotenberg, E.] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. [Enderlein, C.; Horn, K.] Max Planck Gesell, Fritz Haber Inst, D-1000 Berlin, Germany. RP Enderlein, C (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA. EM carsten@fhi-berlin.mpg.de RI Rotenberg, Eli/B-3700-2009; Bostwick, Aaron/E-8549-2010 OI Rotenberg, Eli/0000-0002-3979-8844; FU Director, Office of Science, Office of Basic Energy Sciences, US Department of Energy [DE-AC02-05CH11231] FX The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, US Department of Energy, under contract no. DE-AC02-05CH11231. We thank Yu S Dedkov for extensive comments on the manuscript. NR 38 TC 104 Z9 104 U1 4 U2 64 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD MAR 9 PY 2010 VL 12 AR 033014 DI 10.1088/1367-2630/12/3/033014 PG 9 WC Physics, Multidisciplinary SC Physics GA 566FD UT WOS:000275354600009 ER PT J AU Moreno, GA Dalvit, DAR Calzetta, E AF Moreno, Gustavo A. Dalvit, Diego A. R. Calzetta, Esteban TI Bragg spectroscopy for measuring Casimir-Polder interactions with Bose-Einstein condensates above corrugated surfaces SO NEW JOURNAL OF PHYSICS LA English DT Article AB We propose a method to probe dispersive atom-surface interactions by measuring via two-photon Bragg spectroscopy the dynamic structure factor of a Bose-Einstein condensate above corrugated surfaces. This method takes advantage of the condensate coherence to reveal the spatial Fourier components of the lateral Casimir-Polder interaction energy. C1 [Moreno, Gustavo A.; Calzetta, Esteban] Univ Buenos Aires, IFIBA CONICET, RA-1428 Buenos Aires, DF, Argentina. [Moreno, Gustavo A.; Calzetta, Esteban] Univ Buenos Aires, FCEN, Dept Fis, RA-1428 Buenos Aires, DF, Argentina. [Dalvit, Diego A. R.] Los Alamos Natl Lab, Theoret Div MS B213, Los Alamos, NM 87545 USA. RP Moreno, GA (reprint author), Univ Buenos Aires, IFIBA CONICET, Ciudad Univ, RA-1428 Buenos Aires, DF, Argentina. EM morenog@df.uba.ar; dalvit@lanl.gov; calzetta@df.uba.ar FU CONICET; ANPCYT; UBA (Argentina); US Department of Energy FX We are grateful to M Modugno for useful comments and V Bagnato, F Dalfovo, P A Maia Neto and J Schmiedmayer for discussions. GAM and EC are supported in part by CONICET, ANPCYT and UBA (Argentina). DARD is grateful to the US Department of Energy for the support of this work through the LANL/LDRD Program. NR 26 TC 7 Z9 7 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD MAR 9 PY 2010 VL 12 AR 033009 DI 10.1088/1367-2630/12/3/033009 PG 12 WC Physics, Multidisciplinary SC Physics GA 566FD UT WOS:000275354600004 ER PT J AU Christen, B Fero, MJ Hillson, NJ Bowman, G Hong, SH Shapiro, L McAdams, HH AF Christen, Beat Fero, Michael J. Hillson, Nathan J. Bowman, Grant Hong, Sun-Hae Shapiro, Lucy McAdams, Harley H. TI High-throughput identification of protein localization dependency networks SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE automated fluorescence microscopy; high content screening; asymmetric cell division; systems biology; Caulobacter crescentus ID BACTERIAL-CELL-CYCLE; CAULOBACTER-CRESCENTUS; ASYMMETRIC DIVISION; ESCHERICHIA-COLI; KINASE; DIFFERENTIATION; SEGREGATION; CHROMOSOME; REGULATOR; SYSTEM AB Bacterial cells are highly organized with many protein complexes and DNA loci dynamically positioned to distinct subcellular sites over the course of a cell cycle. Such dynamic protein localization is essential for polar organelle development, establishment of asymmetry, and chromosome replication during the Caulobacter crescentus cell cycle. We used a fluorescence microscopy screen optimized for high-throughput to find strains with anomalous temporal or spatial protein localization patterns in transposon-generated mutant libraries. Automated image acquisition and analysis allowed us to identify genes that affect the localization of two polar cell cycle histidine kinases, PleC and DivJ, and the pole-specific pili protein CpaE, each tagged with a different fluorescent marker in a single strain. Four metrics characterizing the observed localization patterns of each of the three labeled proteins were extracted for hundreds of cell images from each of 854 mapped mutant strains. Using cluster analysis of the resulting set of 12-element vectors for each of these strains, we identified 52 strains with mutations that affected the localization pattern of the three tagged proteins. This information, combined with quantitative localization data from epitasis experiments, also identified all previously known proteins affecting such localization. These studies provide insights into factors affecting the PleC/DivJ localization network and into regulatory links between the localization of the pili assembly protein CpaE and the kinase localization pathway. Our high-throughput screening methodology can be adapted readily to any sequenced bacterial species, opening the potential for databases of localization regulatory networks across species, and investigation of localization network phylogenies. C1 [Christen, Beat; Fero, Michael J.; Hillson, Nathan J.; Bowman, Grant; Hong, Sun-Hae; Shapiro, Lucy; McAdams, Harley H.] Stanford Univ, Dept Dev Biol, Sch Med, Stanford, CA 94305 USA. [Hillson, Nathan J.] Joint BioEnergy Inst, Fuels Synth Div, Emeryville, CA 94608 USA. [Hong, Sun-Hae] Stanford Univ, Dept Phys, Stanford, CA 94305 USA. RP Fero, MJ (reprint author), Stanford Univ, Dept Dev Biol, Sch Med, Stanford, CA 94305 USA. EM mike.fero@stanford.edu; shapiro@stanford.edu RI Hillson, Nathan/F-9957-2012 OI Hillson, Nathan/0000-0002-9169-3978 FU Department of Energy [DE-FG02-05ER64136]; National Institutes of Health [R01 GM51426 R24, R01 GM32506, GM073011-04, K25 GM070972-01A2, F32GM080008]; L&Th. La Roche Foundation; Swiss National Science Foundation [PA00P3-126243]; Damon Runyon Cancer Research Foundation [DRG-1880-05]; Samsung Scholarshi FX We thank Rafael Gomez-Sjoberg, Stephanie Weber, and Choon Sim for software and Antonio Iniesta for strains and plasmids. This work was funded by Department of Energy Grant DE-FG02-05ER64136 (to H. H. M.), and National Institutes of Health Grants R01 GM51426 R24, R01 GM32506, and GM073011-04 (to L. S.), and K25 GM070972-01A2 (to M.J.F.). B. C. was supported by the L&Th. La Roche Foundation and by the Swiss National Science Foundation Fellowship PA00P3-126243. N.J.H. was supported by Damon Runyon Cancer Research Foundation Fellowship DRG-1880-05, G.B. by National Institutes of Health Grant F32GM080008, and S.H. by a Samsung Scholarship. NR 27 TC 31 Z9 31 U1 0 U2 7 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 9 PY 2010 VL 107 IS 10 BP 4681 EP 4686 DI 10.1073/pnas.1000846107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 566KF UT WOS:000275368400036 PM 20176934 ER PT J AU Bravo-Abad, J Rodriguez, AW Joannopoulos, JD Rakich, PT Johnson, SG Soljacic, M AF Bravo-Abad, J. Rodriguez, A. W. Joannopoulos, J. D. Rakich, P. T. Johnson, S. G. Soljacic, M. TI Efficient low-power terahertz generation via on-chip triply-resonant nonlinear frequency mixing SO APPLIED PHYSICS LETTERS LA English DT Article ID CONVERSION; CAVITY AB In this letter, we show theoretically how the light-confining properties of triply-resonant photonic resonators can be tailored to enable dramatic enhancements of the conversion efficiency of terahertz (THz) generation via nonlinear frequency down-conversion processes. Using detailed numerical calculations, we predict that this approach can be used to reduce up to three orders of magnitude the pump powers required to reach quantum-limited conversion efficiency of THz generation in conventional nonlinear optical material systems. Furthermore, we propose a realistic design readily accessible experimentally, both for fabrication and demonstration of optimal THz conversion efficiency at sub-W power levels. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3359429] C1 [Bravo-Abad, J.; Rodriguez, A. W.; Joannopoulos, J. D.; Soljacic, M.] MIT, Dept Phys, Cambridge, MA 02139 USA. [Rakich, P. T.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Johnson, S. G.] MIT, Dept Math, Cambridge, MA 02139 USA. RP Bravo-Abad, J (reprint author), MIT, Dept Phys, Cambridge, MA 02139 USA. EM jbravo@mit.edu OI Bravo-Abad, Jorge/0000-0001-6876-8022 FU NSF [DMR0819762]; U.S.A.R.O. through the ISN [W911NF-07-D-0004] FX The authors thank Dr. Morris Kesler and Dr. Katie Hall for valuable discussions. This work was supported by the MRSEC Program of the NSF under Award No. DMR0819762 and by the U.S.A.R.O. through the ISN under Contract No. W911NF-07-D-0004. NR 18 TC 14 Z9 14 U1 0 U2 4 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 101110 DI 10.1063/1.3359429 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000010 ER PT J AU Heinonen, O Siegert, M Roelofs, A Petford-Long, AK Holt, M d'Aquila, K Li, W AF Heinonen, O. Siegert, M. Roelofs, A. Petford-Long, A. K. Holt, M. d'Aquila, K. Li, W. TI Correlating structural and resistive changes in Ti:NiO resistive memory elements SO APPLIED PHYSICS LETTERS LA English DT Article ID RANDOM-ACCESS MEMORY; TRANSITION-METAL OXIDES; NIO FILMS; RESISTANCE AB Structural and resistive changes in Ti-doped NiO resistive random access memory structures that occur upon electroforming have been investigated using hard x-ray microscopy. Electroforming leads to structural changes in regions of size up to about one micrometer, much larger than the grain size of the structure. Such changes are consistent with a migration of ionic species or defects during electroforming over regions containing many crystalline grains. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3355546] C1 [Heinonen, O.; Siegert, M.; Roelofs, A.] Seagate Technol, Memory Prod Grp, Bloomington, MN 55435 USA. [Petford-Long, A. K.; d'Aquila, K.; Li, W.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Holt, M.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. [d'Aquila, K.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. RP Heinonen, O (reprint author), Seagate Technol, Memory Prod Grp, Bloomington, MN 55435 USA. EM olle.g.heinonen@seagate.com RI Roelofs, Andreas/H-1742-2011; Petford-Long, Amanda/P-6026-2014; OI Roelofs, Andreas/0000-0003-4141-3082; Petford-Long, Amanda/0000-0002-3154-8090; Heinonen, Olle/0000-0002-3618-6092 FU U.S. Department of Energy Office of Science Laboratory [DE-AC02-06CH11357]; U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX The authors wish to thank Nurul Amin, Bryan Oliver, Venu Vaithyanathan, Abdurahman Abdurahman, Ming Sun, Alex Lahave, and Augusto Morrone. Part of this work was carried out at UChicago Argonne, LLC, operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of Science Laboratory, is operated under Contract No. DE-AC02-06CH11357. Use of the Center for Nanoscale Materials was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. NR 24 TC 10 Z9 10 U1 0 U2 9 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 103103 DI 10.1063/1.3355546 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000070 ER PT J AU Kao, TY Hu, Q Reno, JL AF Kao, Tsung-Yu Hu, Qing Reno, John L. TI Phase-locked arrays of surface-emitting terahertz quantum-cascade lasers SO APPLIED PHYSICS LETTERS LA English DT Article ID METAL WAVE-GUIDE; ANTIGUIDES AB We report the demonstration of phase-locked arrays of surface-emitting distributed-feedback (DFB) terahertz quantum-cascade lasers with single-mode operations. Carefully designed "phase sector" locks several surface-emitting DFB laser ridges in-phase, creating tighter beam-patterns along the phased-array direction with full width at half maximum (FWHM) approximate to 10 degrees. In addition, the phase sector can be individually biased to provide a mechanism of frequency tuning through gain-induced optical index change, without significantly affecting the output power levels. A tuning range of 1.5 GHz around 3.9 THz was achieved. This fine tunability could be utilized to frequency-or phase-lock the DFB array to an external reference. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358134] C1 [Kao, Tsung-Yu; Hu, Qing] MIT, Dept Elect Engn & Comp Sci, Elect Res Lab, Cambridge, MA 02139 USA. [Reno, John L.] Sandia Natl Labs, Dept 1123, Albuquerque, NM 87185 USA. RP Kao, TY (reprint author), MIT, Dept Elect Engn & Comp Sci, Elect Res Lab, Cambridge, MA 02139 USA. EM wilt_kao@mit.edu FU AFOSR; NASA; NSF; U.S. Department of Energy [DE-AC04-94AL85000] FX We would like to thank S. Kumar for helpful discussions and A. W. M. Lee for the THz imaging measurement. This work is supported by AFOSR, NASA, and NSF. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Co., for the U.S. Department of Energy under Contract No. DE-AC04-94AL85000. NR 19 TC 29 Z9 29 U1 1 U2 13 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 101106 DI 10.1063/1.3358134 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000006 ER PT J AU Kapadia, R Fan, ZY Javey, A AF Kapadia, Rehan Fan, Zhiyong Javey, Ali TI Design constraints and guidelines for CdS/CdTe nanopillar based photovoltaics SO APPLIED PHYSICS LETTERS LA English DT Article ID SOLAR-CELLS; CDTE AB The performance dependence of a CdS/CdTe nanopillar solar cell on various device and materials parameters is explored while examining its performance limits through detailed device modeling. The optimized cell enables efficiencies >similar to 20% with minimal short circuit current dependence on bulk minority carrier diffusion length, demonstrating the efficient collection of photogenerated carriers, therefore, lowering the materials quality and purity constraints. Given the large p-n junction interface area, the interface recombination velocity is shown to have detrimental effect on the device performance of nanopillar solar cells. In that regard, the CdS/CdTe material system is optimal due to its low interface recombination velocity. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3340938] C1 [Kapadia, Rehan] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley Sensor & Actuator Ctr, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Kapadia, R (reprint author), Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. EM ajavey@eecs.berkeley.edu RI Fan, Zhiyong/C-4970-2012; Kapadia, Rehan/B-4100-2013; Javey, Ali/B-4818-2013; OI Kapadia, Rehan/0000-0002-7611-0551; Fan, Zhiyong/0000-0002-5397-0129 FU Berkeley Sensor and Actuator Center; NSF FX This work was supported by Berkeley Sensor and Actuator Center. R. K acknowledges an NSF Graduate Fellowship. NR 15 TC 45 Z9 45 U1 2 U2 27 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 103116 DI 10.1063/1.3340938 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000083 ER PT J AU Lin, Y Dai, C Li, YR Chen, X Chen, CL Bhalla, A Jia, QX AF Lin, Y. Dai, C. Li, Y. R. Chen, X. Chen, C. L. Bhalla, A. Jia, Q. X. TI Strain relaxation in epitaxial (Pb,Sr)TiO3 thin films on NdGaO3 substrates SO APPLIED PHYSICS LETTERS LA English DT Article ID ANISOTROPIC INPLANE STRAINS; DIELECTRIC-PROPERTIES; FERROELECTRICITY; ENHANCEMENT AB Strain relaxation behavior of (Pb,Sr)TiO3 thin films on (110)NdGaO3 substrates fabricated under different conditions have been investigated using high resolution x-ray diffraction. Dislocation densities and interfacial strain distribution have been systematically studied with samples in different postdeposition cooling rates. Strain relaxation and dislocation evolution are found to be dependent upon the cooling process. The relationship of dielectric properties and the strain and dislocations of the films were discussed. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3357435] C1 [Lin, Y.; Dai, C.; Li, Y. R.] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China. [Chen, X.; Chen, C. L.] Univ Houston, Dept Phys, Houston, TX 77204 USA. [Chen, X.; Chen, C. L.] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA. [Chen, C. L.] Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA. [Bhalla, A.] Univ Texas San Antonio, Dept Elect & Comp Engn, San Antonio, TX 78249 USA. [Jia, Q. X.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. RP Lin, Y (reprint author), Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China. EM linyuan@uestc.edu.cn; cl.chen@utsa.edu RI Jia, Q. X./C-5194-2008; lin, yuan/B-9955-2013 FU National Natural Science Foundation of China [60976061]; State of Texas [003656-0103-2007]; Laboratory Directed Research and Development Project; Center for Integrated Nanotechnologies under the U.S. Department of Energy FX This work is partially supported by the National Natural Science Foundation of China (Grant No. 60976061). It is also supported by the State of Texas through the Texas Advanced Research Program under 003656-0103-2007 at UTSA and through the Texas Center for Superconductivity in the University of Houston. The effort at Los Alamos National Laboratory was supported by the Laboratory Directed Research and Development Project and the Center for Integrated Nanotechnologies under the U.S. Department of Energy. NR 20 TC 9 Z9 9 U1 5 U2 29 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 102901 DI 10.1063/1.3357435 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000058 ER PT J AU Lu, SG Fang, Z Furman, E Wang, Y Zhang, QM Mudryk, Y Gschneidner, KA Pecharsky, VK Nan, CW AF Lu, S. G. Fang, Z. Furman, E. Wang, Y. Zhang, Q. M. Mudryk, Y. Gschneidner, K. A., Jr. Pecharsky, V. K. Nan, C. W. TI Thermally mediated multiferroic composites for the magnetoelectric materials SO APPLIED PHYSICS LETTERS LA English DT Article ID TEMPERATURE AB A magnetoelectric (ME) composite through thermal mediation is presented, which is different from the traditional strain/stress mediated ME composites. The ME laminate uses the large magnetocaloric effect, that is, a temperature change induced in the ferromagnetic Gd crystal by a magnetic field, and a large pyroelectric response in the relaxor ferroelectric polymer. Consequently, a simple laminate composite can produce a ME response similar to 0.5 V/(cm Oe). The ME coefficient was further enhanced to similar to 0.9 V/(cm Oe) by exploiting the magnetic flux concentration effect. The approach opens up an avenue in developing ME materials for broad range of applications. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358133] C1 [Lu, S. G.; Fang, Z.; Furman, E.; Wang, Y.; Zhang, Q. M.] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. [Lu, S. G.; Fang, Z.; Furman, E.; Wang, Y.; Zhang, Q. M.] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA. [Mudryk, Y.; Gschneidner, K. A., Jr.; Pecharsky, V. K.] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. [Mudryk, Y.; Gschneidner, K. A., Jr.; Pecharsky, V. K.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Nan, C. W.] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China. RP Lu, SG (reprint author), Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. EM qxz1@psu.edu RI Fang, Zhao/J-9943-2012 FU U.S. Department of Energy [DE-FG02-07ER46410]; NSF [ECCS-0824202]; Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-07CH11358]; NSF of China [50621201]; State Key Project of Fundamental Research of China [2009CB623303] FX The work at The Pennsylvania State University was supported by U.S. Department of Energy through Grant No. DE-FG02-07ER46410 and NSF through Grant No. ECCS-0824202. The work at Ames Laboratory was supported by the Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy under Contract No. DE-AC02-07CH11358 with Iowa State University. The work at Tsinghua University was supported by the NSF of China through Grant No. 50621201 and the State Key Project of Fundamental Research of China through Grant No. 2009CB623303. NR 24 TC 12 Z9 13 U1 1 U2 55 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 102902 DI 10.1063/1.3358133 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000059 ER PT J AU Miao, XY Passmore, B Gin, A Langston, W Vangala, S Goodhue, W Shaner, E Brener, I AF Miao, Xiaoyu Passmore, Brandon Gin, Aaron Langston, William Vangala, Shivashankar Goodhue, William Shaner, Eric Brener, Igal TI Doping tunable resonance: Toward electrically tunable mid-infrared metamaterials SO APPLIED PHYSICS LETTERS LA English DT Article ID NEAR-INFRARED METAMATERIALS; TERAHERTZ; INSB AB We demonstrate metamaterials at the mid-infrared (mid-IR) wavelengths (8-12 mu m) that can be widely tuned by doping in adjacent semiconductor epilayers. The metamaterials are based on metallic split ring resonators (SRRs) fabricated on doped indium antimonide (InSb). Finite integral time-domain simulation results and measured transmission data show that the resonance blueshifts when the semiconductor electron carrier concentration is increased while keeping the split ring geometry constant. A resonant wavelength shift of 1.15 mu m is achieved by varying the carrier concentration of underlying InSb epilayer from 1 x 10(16) to 2 x 10(18) cm(-3). This work represents the first step toward active tunable metamaterials in the mid-IR where the resonance can be tuned in real time by applying an electric bias voltage to control the effective carrier density. c 2010 American Institute of Physics. [doi: 10.1063/1.3309707] C1 [Miao, Xiaoyu; Gin, Aaron; Brener, Igal] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA. [Vangala, Shivashankar; Goodhue, William] Univ Massachusetts, Dept Phys & Appl Phys, Lowell, MA 01854 USA. RP Miao, XY (reprint author), Sandia Natl Labs, Ctr Integrated Nanotechnol, POB 5800, Albuquerque, NM 87185 USA. EM xmiao@sandia.gov RI Gin, Aaron/E-3647-2010; Brener, Igal/G-1070-2010 OI Brener, Igal/0000-0002-2139-5182 FU U.S. Department of Energy [DE-AC04-94AL85000] FX We thank H.-T. Chen, A. J. Taylor, and M. Sinclair for useful discussions. This work was performed, in part, at the Center for Integrated Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy Sciences user facility. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed-Martin Co., for the U.S. Department of Energy under Contract No. DE-AC04-94AL85000. NR 14 TC 19 Z9 19 U1 1 U2 11 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 101111 DI 10.1063/1.3309707 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000011 ER PT J AU Rong, CB Zhang, Y Poudyal, N Xiong, XY Kramer, MJ Liu, JP AF Rong, Chuanbing Zhang, Ying Poudyal, Narayan Xiong, Xiangyuan Kramer, M. J. Liu, J. Ping TI Fabrication of bulk nanocomposite magnets via severe plastic deformation and warm compaction SO APPLIED PHYSICS LETTERS LA English DT Article ID REMANENCE ENHANCEMENT; PERMANENT-MAGNETS; EXCHANGE; ANISOTROPY AB We demonstrate that a SmCo/FeCo based hard/soft nanocomposite material can be fabricated by distributing the soft magnetic alpha-Fe phase particles homogeneously in a hard magnetic SmCo phase through severe plastic deformation. The soft-phase particle size can be reduced from micrometers to smaller than 15 nm upon deformation. Up to 30% of the soft phase can be incorporated into the composites without coarsening. A warm compaction process of the plastically deformed powder particles then produces bulk nanocomposite magnets of fully dense nanocomposites with energy product up to 19.2 MGOe owing to effective interphase exchange coupling, which makes this type of nanocomposite magnets suitable for high energy-density applications at high temperatures. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3358390] C1 [Rong, Chuanbing; Zhang, Ying; Poudyal, Narayan; Liu, J. Ping] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA. [Zhang, Ying; Kramer, M. J.] Iowa State Univ, Ames Lab, Div Engn & Mat Sci, Ames, IA 50011 USA. [Xiong, Xiangyuan] Monash Univ, Monash Ctr Electron Microscopy, Dept Mat Engn, Clayton, Vic 3800, Australia. RP Rong, CB (reprint author), Univ Texas Arlington, Dept Phys, POB 19059, Arlington, TX 76019 USA. EM pliu@uta.edu FU U.S. Department of Defense, Office of Naval Research/MURI [N00014-05-1-0497]; University of Texas-Arlington; U.S. Department of Energy, Office of Basic Energy Science [DE-AC02-07CH11358] FX This work was supported in part by the U.S. Department of Defense, Office of Naval Research/MURI Project under Grant No. N00014-05-1-0497 and by the University of Texas-Arlington. Work at the Ames laboratory was supported in part by the U.S. Department of Energy, Office of Basic Energy Science, under Contract No. DE-AC02-07CH11358. X. X. thanks Dr. Sergey Rubanov of University of Melbourne for his assistance in the atom probe investigation. NR 23 TC 53 Z9 53 U1 4 U2 49 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 102513 DI 10.1063/1.3358390 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000056 ER PT J AU Wang, ZG Li, JB Gao, F Weber, WJ AF Wang, Zhiguo Li, Jingbo Gao, Fei Weber, William J. TI Codoping of magnesium with oxygen in gallium nitride nanowires SO APPLIED PHYSICS LETTERS LA English DT Article ID MOLECULAR-BEAM EPITAXY; P-TYPE GAN; CHEMICAL-VAPOR-DEPOSITION; MG-DOPED GAN; SEMICONDUCTORS; MECHANISM; NANORODS; HYDROGEN; ARRAYS; ENERGY AB Codoping of p-type GaN nanowires with Mg and oxygen was investigated using first-principles calculations. The Mg becomes a deep acceptor in GaN nanowires with high ionization energy due to the quantum confinement. The ionization energy of Mg doped GaN nanowires containing passivated Mg-O complex decreases with increasing the diameter, and reduces to 300 meV as the diameter of the GaN nanowire is larger than 2.01 nm, which indicates that Mg-O codoping is suitable for achieving p-type GaN nanowires with larger diameters. The codoping method to reduce the ionization energy can be effectively used in other semiconductor nanostructures. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3318462] C1 [Wang, Zhiguo; Li, Jingbo] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China. [Wang, Zhiguo] Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China. [Gao, Fei; Weber, William J.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Wang, ZG (reprint author), Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China. EM zgwang@uestc.edu.cn; jbli@semi.ac.cn RI Weber, William/A-4177-2008; Gao, Fei/H-3045-2012; Wang, Zhiguo/B-7132-2009 OI Weber, William/0000-0002-9017-7365; FU National Natural Science Foundation of China [10704014]; Young Scientists Foundation of Sichuan [009ZQ026-029]; UESTC [JX0731]; Chinese Academy of Sciences; National Science Fund [60925016]; Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC05-76RL01830] FX Z. W. was financially supported by the National Natural Science Foundation of China (Grant No. 10704014) and the Young Scientists Foundation of Sichuan (009ZQ026-029) and UESTC (JX0731). J. L. gratefully acknowledges financial support from the "One-Hundred Talents Plan" of the Chinese Academy of Sciences and National Science Fund for Distinguished Young Scholar (Grant No. 60925016). F. G. and W. J. W. were supported by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy under Contract No. DE-AC05-76RL01830. NR 41 TC 10 Z9 10 U1 0 U2 13 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 8 PY 2010 VL 96 IS 10 AR 103112 DI 10.1063/1.3318462 PG 3 WC Physics, Applied SC Physics GA 569HU UT WOS:000275588000079 ER PT J AU Hyatt, D Chen, GL LoCascio, PF Land, ML Larimer, FW Hauser, LJ AF Hyatt, Doug Chen, Gwo-Liang LoCascio, Philip F. Land, Miriam L. Larimer, Frank W. Hauser, Loren J. TI Prodigal: prokaryotic gene recognition and translation initiation site identification SO BMC BIOINFORMATICS LA English DT Article ID BACTERIAL; PREDICTION; SEQUENCE; GENOMES; TOOL; ANNOTATION; FINDER AB Background: The quality of automated gene prediction in microbial organisms has improved steadily over the past decade, but there is still room for improvement. Increasing the number of correct identifications, both of genes and of the translation initiation sites for each gene, and reducing the overall number of false positives, are all desirable goals. Results: With our years of experience in manually curating genomes for the Joint Genome Institute, we developed a new gene prediction algorithm called Prodigal (PROkaryotic DYnamic programming Gene-finding ALgorithm). With Prodigal, we focused specifically on the three goals of improved gene structure prediction, improved translation initiation site recognition, and reduced false positives. We compared the results of Prodigal to existing gene-finding methods to demonstrate that it met each of these objectives. Conclusion: We built a fast, lightweight, open source gene prediction program called Prodigal http://compbio.ornl.gov/prodigal/. Prodigal achieved good results compared to existing methods, and we believe it will be a valuable asset to automated microbial annotation pipelines. C1 [Hyatt, Doug; Chen, Gwo-Liang; LoCascio, Philip F.; Land, Miriam L.; Larimer, Frank W.; Hauser, Loren J.] Oak Ridge Natl Lab, Computat Biol & Bioinformat Grp, Oak Ridge, TN 37831 USA. [Hyatt, Doug; Larimer, Frank W.] Univ Tennessee, Genome Sci & Technol Grad Sch, Knoxville, TN 37996 USA. [Land, Miriam L.; Hauser, Loren J.] Oak Ridge Natl Lab, DOE Joint Genome Inst, Oak Ridge, TN 37831 USA. RP Hyatt, D (reprint author), Oak Ridge Natl Lab, Computat Biol & Bioinformat Grp, POB 2008, Oak Ridge, TN 37831 USA. EM hyattpd@ornl.gov RI Hauser, Loren/H-3881-2012; Land, Miriam/A-6200-2011 OI Land, Miriam/0000-0001-7102-0031 FU U.S. Department of Energy [DE-AC05-00OR22725]; Office of Science; Biological and Environmental Research FX The authors wish to acknowledge Robert W. Cottingham, Edward C. Uberbacher, Cynthia Jeffries, and Yun-Juan Chang for helpful discussions and suggestions. The authors also wish to acknowledge Mark Borodovsky for helpful discussions and the provision of the Genemark software. Support for this research was provided by the U.S. Department of Energy, Office of Science, Biological and Environmental Research Programs. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U.S. Department of Energy under contract DE-AC05-00OR22725. NR 19 TC 1098 Z9 1103 U1 9 U2 74 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2105 J9 BMC BIOINFORMATICS JI BMC Bioinformatics PD MAR 8 PY 2010 VL 11 AR 119 DI 10.1186/1471-2105-11-119 PG 11 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Mathematical & Computational Biology GA 578LZ UT WOS:000276296400001 PM 20211023 ER PT J AU Abraham, J Abreu, P Aglietta, M Ahn, EJ Allard, D Allen, J Alvarez-Muniz, J Ambrosio, M Anchordoqui, L Andringa, S Anticic, T Anzalone, A Aramo, C Arganda, E Arisaka, K Arqueros, F Asorey, H Assis, P Aublin, J Ave, M Avila, G Backer, T Badagnani, D Balzer, M Barber, KB Barbosa, AF Barroso, SLC Baughman, B Bauleo, P Beatty, JJ Becker, BR Becker, KH Belletoile, A Bellido, JA BenZvi, S Berat, C Bergmann, T Bertou, X Biermann, PL Billoir, P Blanch-Bigas, O Blanco, F Blanco, M Bleve, C Blumer, H Bohacova, M Boncioli, D Bonifazi, C Bonino, R Borodai, N Brack, J Brogueira, P Brown, WC Bruijn, R Buchholz, P Bueno, A Burton, RE Busca, NG Caballero-Mora, KS Caramete, L Caruso, R Castellina, A Catalano, O Cataldi, G Cazon, L Cester, R Chauvin, J Chiavassa, A Chinellato, JA Chou, A Chudoba, J Clay, RW Colombo, E Coluccia, MR Conceicao, R Contreras, F Cook, H Cooper, MJ Coppens, J Cordier, A Cotti, U Coutu, S Covault, CE Creusot, A Criss, A Cronin, J Curutiu, A Dagoret-Campagne, S Dallier, R Daumiller, K Dawson, BR de Almeida, RM De Domenico, M De Donato, C de Jong, SJ De La Vega, G de Mello, WJM Neto, JRTD De Mitri, I de Souza, V de Vries, KD Decerprit, G del Peral, L Deligny, O Della Selva, A Delle Fratte, C Dembinski, H Di Giulio, C Diaz, JC Castro, MLD Diep, PN Dobrigkeit, C D'Olivo, JC Dong, PN Dorofeev, A dos Anjos, JC Dova, MT D'Urso, D Dutan, I DuVernois, MA Ebr, J Engel, R Erdmann, M Escobar, CO Etchegoyen, A San Luis, PF Falcke, H Farrar, G Fauth, AC Fazzini, N Ferrero, A Fick, B Filevich, A Filipcic, A Fleck, I Fliescher, S Fracchiolla, CE Fraenkel, ED Frohlich, U Fulgione, W Gamarra, RF Gambetta, S Garcia, B Gamez, DG Garcia-Pinto, D Garrido, X Gelmini, G Gemmeke, H Ghia, PL Giaccari, U Giller, M Glass, H Goggin, LM Gold, MS Golup, G Albarracin, FG Berisso, MG Goncalves, P Gonzalez, D Gonzalez, JG Gora, D Gorgi, A Gouffon, P Gozzini, SR Grashorn, E Grebe, S Grigat, M Grillo, AF Guardincerri, Y Guarino, F Guedes, GP Hague, JD Halenka, V Hansen, P Harari, D Harmsma, S Harton, JL Haungs, A Hebbeker, T Heck, D Herve, AE Hojvat, C Holmes, VC Homola, P Horandel, JR Horneffer, A Hrabovsky, M Huege, T Hussain, M Iarlori, M Insolia, A Ionita, F Italiano, A Jiraskova, S Kadija, K Kaducak, M Kampert, KH Karova, T Kasper, P Kegl, B Keilhauer, B Keivani, A Kelley, J Kemp, E Kieckhafer, RM Klages, HO Kleifges, M Kleinfeller, J Knapik, R Knapp, J Koang, DH Krieger, A Kromer, O Kruppke-Hansen, D Kuehn, F Kuempel, D Kulbartz, K Kunka, N Kusenko, A La Rosa, G Lachaud, C Lago, BL Lautridou, P Leao, MSAB Lebrun, D Lebrun, P Lee, J de Oliveira, MAL Lemiere, A Letessier-Selvon, A Lhenry-Yvon, I Lopez, R Aguera, AL Louedec, K Bahilo, JL Lucero, A Ludwig, M Lyberis, H Maccarone, MC Macolino, C Maldera, S Mandat, D Mantsch, P Mariazzi, AG Marin, V Maris, IC Falcon, HRM Marsella, G Martello, D Bravo, OM Mathes, HJ Matthews, J Matthews, JAJ Matthiae, G Maurizio, D Mazur, PO McEwen, M Medina-Tanco, G Melissas, M Melo, D Menichetti, E Menshikov, A Meurer, C Micanovic, S Micheletti, MI Miller, W Miramonti, L Mollerach, S Monasor, M Ragaigne, DM Montanet, F Morales, B Morello, C Moreno, E Moreno, JC Morris, C Mostafa, M Mueller, S Muller, MA Mussa, R Navarra, G Navarro, JL Navas, S Necesal, P Nellen, L Nhung, PT Nierstenhoefer, N Nitz, D Nosek, D Nozka, L Nyklicek, M Oehlschlager, J Olinto, A Oliva, P Olmos-Gilbaja, VM Ortiz, M Pacheco, N Selmi-Dei, DP Palatka, M Pallotta, J Palmieri, N Parente, G Parizot, E Parlati, S Parra, A Parrisius, J Parsons, RD Pastor, S Paul, T Pavlidou, V Payet, K Pech, M Pekala, J Pelayo, R Pepe, IM Perrone, L Pesce, R Petermann, E Petrera, S Petrinca, P Petrolini, A Petrov, Y Petrovic, J Pfendner, C Piegaia, R Pierog, T Pimenta, M Pirronello, V Platino, M Ponce, VH Pontz, M Privitera, P Prouza, M Quel, EJ Rautenberg, J Ravel, O Ravignani, D Redondo, A Revenu, B Rezende, FAS Ridky, J Riggi, S Risse, M Ristori, P Riviere, C Rizi, V Robledo, C Rodriguez, G Martino, JR Rojo, JR Rodriguez-Cabo, I Rodriguez-Frias, MD Ros, G Rosado, J Rossler, T Roth, M Rouille-d'Orfeuil, B Roulet, E Rovero, AC Salamida, F Salazar, H Salina, G Sanchez, F Santander, M Santo, CE Santos, E Santos, EM Sarazin, F Sarkar, S Sato, R Scharf, N Scherini, V Schieler, H Schiffer, P Schmidt, A Schmidt, F Schmidt, T Scholten, O Schoorlemmer, H Schovancova, J Schovanek, P Schroeder, F Schulte, S Schussler, F Schuster, D Siffert, BB Sigl, G Smialkowski, A Smida, R Snow, GR Sommers, P Sorokin, J Spinka, H Squartini, R Stasielak, J Stephan, M Strazzeri, E Stutz, A Suarez, F Suomijarvi, T Supanitsky, AD Susa, T Sutherland, MS Swain, J Szadkowski, Z Tamashiro, A Tamburro, A Tapia, A Tarutina, T Tascau, O Tcaciuc, R Tcherniakhovski, D Tegolo, D Thao, NT Thomas, D Tiffenberg, J Timmermans, C Tkaczyk, W Peixoto, CJT Tome, B Tonachini, A Travnicek, P Tridapalli, DB Tristram, G Trovato, E Tueros, M Ulrich, R Unger, M Urban, M Galicia, JFV Valino, I Valore, L van den Berg, AM Vazquez, JR Vazquez, RA Veberic, D Venters, T Verzi, V Videla, M Villasenor, L Vorobiov, S Voyvodic, L Wahlberg, H Wahrlich, P Wainberg, O Warner, D Watson, AA Westerhoff, S Whelan, BJ Wieczorek, G Wiencke, L Wilczynska, B Wilczynski, H Williams, C Winchen, T Winnick, MG Wundheiler, B Yamamoto, T Younk, P Yuan, G Yushkov, A Zas, E Zavrtanik, D Zavrtanik, M Zaw, I Zepeda, A Ziolkowski, M AF Abraham, J. 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Parlati, S. Parra, A. Parrisius, J. Parsons, R. D. Pastor, S. Paul, T. Pavlidou, V. Payet, K. Pech, M. Pekala, J. Pelayo, R. Pepe, I. M. Perrone, L. Pesce, R. Petermann, E. Petrera, S. Petrinca, P. Petrolini, A. Petrov, Y. Petrovic, J. Pfendner, C. Piegaia, R. Pierog, T. Pimenta, M. Pirronello, V. Platino, M. Ponce, V. H. Pontz, M. Privitera, P. Prouza, M. Quel, E. J. Rautenberg, J. Ravel, O. Ravignani, D. Redondo, A. Revenu, B. Rezende, F. A. S. Ridky, J. Riggi, S. Risse, M. Ristori, P. Riviere, C. Rizi, V. Robledo, C. Rodriguez, G. Rodriguez Martino, J. Rodriguez Rojo, J. Rodriguez-Cabo, I. Rodriguez-Frias, M. D. Ros, G. Rosado, J. Rossler, T. Roth, M. Rouille-d'Orfeuil, B. Roulet, E. Rovero, A. C. Salamida, F. Salazar, H. Salina, G. Sanchez, F. Santander, M. Santo, C. E. Santos, E. Santos, E. M. Sarazin, F. Sarkar, S. Sato, R. Scharf, N. Scherini, V. Schieler, H. Schiffer, P. Schmidt, A. Schmidt, F. Schmidt, T. Scholten, O. Schoorlemmer, H. Schovancova, J. Schovanek, P. Schroeder, F. Schulte, S. Schuessler, F. Schuster, D. Siffert, B. B. Sigl, G. Smialkowski, A. Smida, R. Snow, G. R. Sommers, P. Sorokin, J. Spinka, H. Squartini, R. Stasielak, J. Stephan, M. Strazzeri, E. Stutz, A. Suarez, F. Suomijaervi, T. Supanitsky, A. D. Susa, T. Sutherland, M. S. Swain, J. Szadkowski, Z. Tamashiro, A. Tamburro, A. Tapia, A. Tarutina, T. Tascau, O. Tcaciuc, R. Tcherniakhovski, D. Tegolo, D. Thao, N. T. Thomas, D. Tiffenberg, J. Timmermans, C. Tkaczyk, W. Todero Peixoto, C. J. Tome, B. Tonachini, A. Travnicek, P. Tridapalli, D. B. Tristram, G. Trovato, E. Tueros, M. Ulrich, R. Unger, M. Urban, M. Valdes Galicia, J. F. Valino, I. Valore, L. van den Berg, A. M. Vazquez, J. R. Vazquez, R. A. Veberic, D. Venters, T. Verzi, V. Videla, M. Villasenor, L. Vorobiov, S. Voyvodic, L. Wahlberg, H. Wahrlich, P. Wainberg, O. Warner, D. Watson, A. A. Westerhoff, S. Whelan, B. J. Wieczorek, G. Wiencke, L. Wilczynska, B. Wilczynski, H. Williams, C. Winchen, T. Winnick, M. G. Wundheiler, B. Yamamoto, T. Younk, P. Yuan, G. Yushkov, A. Zas, E. Zavrtanik, D. Zavrtanik, M. Zaw, I. Zepeda, A. Ziolkowski, M. CA Pierre Auger Collaboration TI Measurement of the energy spectrum of cosmic rays above 10(18) eV using the Pierre Auger Observatory SO PHYSICS LETTERS B LA English DT Article DE Pierre Auger Observatory; Cosmic rays; Energy spectrum ID SURFACE DETECTOR; UPPER LIMIT; PHOTON FRACTION; SIMULATION; ELECTRONS; SHOWERS; SYSTEM; ARRAY AB We report a measurement of the flux of cosmic rays with unprecedented precision and Statistics using the Pierre Auger Observatory Based on fluorescence observations in coincidence with at least one Surface detector we derive a spectrum for energies above 10(18) eV We also update the previously published energy spectrum obtained with the surface detector array The two spectra are combined addressing the systematic uncertainties and, in particular. the influence of the energy resolution on the spectral shape The spectrum can be described by a broken power law E-gamma with index gamma = 3 3 below the ankle which is measured at log(10)(E-ankle/eV) = 18 6 Above the ankle the spectrum is described by a power law with index 2 6 followed by a flux suppression, above about log(10)(E/eV) = 19 5, detected with high statistical significance (C) 2010 Elsevier B V All rights reserved C1 [Ave, M.; Bluemer, H.; Daumiller, K.; Engel, R.; Garrido, X.; Haungs, A.; Heck, D.; Huege, T.; Keilhauer, B.; Klages, H. O.; Kleinfeller, J.; Mathes, H. J.; Mueller, S.; Oehlschlaeger, J.; Pierog, T.; Roth, M.; Salamida, F.; Schieler, H.; Schroeder, F.; Schuessler, F.; Smida, R.; Ulrich, R.; Unger, M.; Valino, I.] Karlsruhe Inst Technol, Inst Kernphys, Karlsruhe, Germany. [Pierre Auger Collaboration] Observ Pierre Auger, RA-5613 Malargue, Argentina. [Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Ponce, V. H.; Roulet, E.] Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina. [Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Ponce, V. H.; Roulet, E.] Consejo Nacl Invest Cient & Tecn, UNCuyo, CNEA, San Carlos De Bariloche, Rio Negro, Argentina. [Colombo, E.; Etchegoyen, A.; Ferrero, A.; Filevich, A.; Gamarra, R. F.; Krieger, A.; Micheletti, M. 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[Caruso, R.; De Domenico, M.; Insolia, A.; Italiano, A.; Pirronello, V.; Riggi, S.; Rodriguez Martino, J.; Tegolo, D.; Trovato, E.] Sezione Ist Nazl Fis Nucl, Catania, Italy. [Aglietta, M.; Bonino, R.; Castellina, A.; Chiavassa, A.; Fulgione, W.; Ghia, P. L.; Gorgi, A.; Lucero, A.; Maldera, S.; Morello, C.; Navarra, G.] Univ Turin, Ist Fis Spazio Interplanetario INAF, Turin, Italy. [Aglietta, M.; Bonino, R.; Castellina, A.; Cester, R.; Chiavassa, A.; Fulgione, W.; Ghia, P. L.; Gorgi, A.; Lucero, A.; Maldera, S.; Maurizio, D.; Melo, D.; Menichetti, E.; Morello, C.; Mussa, R.; Navarra, G.; Tonachini, A.] Sezione Ist Nazl Fis Nucl, Turin, Italy. [Marsella, G.; Perrone, L.] Univ Salento, Dipartimento Ingn Innovaz, Lecce, Italy. [Anzalone, A.; Catalano, O.; La Rosa, G.; Maccarone, M. C.; Strazzeri, E.] Ist Astrofis Spaziale & Fis Cosm Palermo INAF, Palermo, Italy. [Tegolo, D.] Univ Palermo, Catania, Italy. [Lopez, R.; Martinez Bravo, O.; Moreno, E.; Robledo, C.; Salazar, H.] Benemerita Univ Autonoma Puebla, Puebla, Mexico. [Zepeda, A.] CINVESTAV, IPN, Ctr Invest & Estudios Avanzados, Mexico City 14000, DF, Mexico. [Cotti, U.; Marquez Falcon, H. R.; Villasenor, L.] Univ Michoacana, Morelia, Michoacan, Mexico. [De Donato, C.; D'Olivo, J. C.; Medina-Tanco, G.; Morales, B.; Nellen, L.; Sanchez, F.; Supanitsky, A. D.; Valdes Galicia, J. F.] Univ Nacl Autonoma Mexico, Mexico City 04510, DF, Mexico. [Coppens, J.; de Jong, S. J.; Falcke, H.; Grebe, S.; Horandel, J. R.; Horneffer, A.; Jiraskova, S.; Kelley, J.; Schoorlemmer, H.; Timmermans, C.] Radboud Univ Nijmegen, IMAPP, NL-6525 ED Nijmegen, Netherlands. [de Vries, K. D.; Fraenkel, E. D.; Harmsma, S.; Scholten, O.; van den Berg, A. M.] Univ Groningen, Kernfys Versneller Inst, Groningen, Netherlands. [Coppens, J.; Harmsma, S.; Petrovic, J.; Timmermans, C.] NIKHEF, Amsterdam, Netherlands. [Falcke, H.] ASTRON, Dwingeloo, Netherlands. [Borodai, N.; Gora, D.; Homola, P.; Pekala, J.; Stasielak, J.; Wilczynska, B.; Wilczynski, H.] Inst Nucl Phys PAN, Krakow, Poland. [Giller, M.; Smialkowski, A.; Szadkowski, Z.; Tkaczyk, W.; Wieczorek, G.] Univ Lodz, PL-90131 Lodz, Poland. [Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Santos, E.; Tome, B.] LIP, P-1000 Lisbon, Portugal. [Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Santos, E.; Tome, B.] Inst Super Tecn, Lisbon, Portugal. [Filipcic, A.; Veberic, D.; Zavrtanik, D.; Zavrtanik, M.] Jozef Stefan Inst, Ljubljana, Slovenia. [Creusot, A.; Filipcic, A.; Hussain, M.; Veberic, D.; Vorobiov, S.; Zavrtanik, D.; Zavrtanik, M.] Univ Nova Gorica, Lab Astroparticle Phys, Nova Gorica, Slovenia. [Pastor, S.] Univ Valencia, CSIC, Inst Fis Corpuscular, Valencia, Spain. [Arganda, E.; Arqueros, F.; Blanco, F.; Garcia-Pinto, D.; Monasor, M.; Ortiz, M.; Rosado, J.; Vazquez, J. R.] Univ Complutense Madrid, Madrid, Spain. [Blanco, M.; del Peral, L.; McEwen, M.; Pacheco, N.; Redondo, A.; Rodriguez-Frias, M. D.; Ros, G.] Univ Alcala De Henares, Madrid, Spain. [Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] Univ Granada, Granada, Spain. [Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] CAFPE, Granada, Spain. [Alvarez-Muniz, J.; San Luis, P. Facal; Lopez Agueera, A.; Olmos-Gilbaja, V. M.; Parente, G.; Parra, A.; Pelayo, R.; Rodriguez, G.; Rodriguez-Cabo, I.; Vazquez, R. A.; Zas, E.] Univ Santiago Compostela, Santiago De Compostela, Spain. [Sarkar, S.] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford, England. [Bruijn, R.; Cook, H.; Gozzini, S. R.; Knapp, J.; Parsons, R. D.; Watson, A. A.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Spinka, H.] Argonne Natl Lab, Argonne, IL 60439 USA. [Burton, R. E.; Covault, C. E.] Case Western Reserve Univ, Cleveland, OH 44106 USA. [Sarazin, F.; Schuster, D.; Wiencke, L.] Colorado Sch Mines, Golden, CO 80401 USA. [Bauleo, P.; Brack, J.; Dorofeev, A.; Fracchiolla, C. E.; Harton, J. L.; Knapik, R.; Mostafa, M.; Petrov, Y.; Thomas, D.; Warner, D.; Younk, P.] Colorado State Univ, Ft Collins, CO 80523 USA. [Brown, W. C.] Colorado State Univ, Pueblo, CO USA. [Ahn, E. J.; Chou, A.; Fazzini, N.; Glass, H.; Hojvat, C.; Kaducak, M.; Kasper, P.; Kuehn, F.; Lebrun, P.; Mantsch, P.; Mazur, P. O.; Spinka, H.; Voyvodic, L.] Fermilab Natl Accelerator Lab, Batavia, IL USA. [Gonzalez, J. G.; Keivani, A.; Matthews, J.; Yuan, G.] Louisiana State Univ, Baton Rouge, LA 70803 USA. [Diaz, J. C.; Fick, B.; Kieckhafer, R. M.; Nitz, D.] Michigan Technol Univ, Houghton, MI 49931 USA. [Allen, J.; Chou, A.; Farrar, G.; Zaw, I.] NYU, New York, NY USA. [Paul, T.; Swain, J.] Northeastern Univ, Boston, MA 02115 USA. [Baughman, B.; Beatty, J. J.; Grashorn, E.; Morris, C.; Sutherland, M. S.] Ohio State Univ, Columbus, OH 43210 USA. [Coutu, S.; Criss, A.; Sommers, P.; Ulrich, R.] Penn State Univ, University Pk, PA 16802 USA. [Matthews, J.] Southern Univ, Baton Rouge, LA USA. [Arisaka, K.; Gelmini, G.; Kusenko, A.; Lee, J.] Univ Calif Los Angeles, Los Angeles, CA USA. [Ave, M.; Bohacova, M.; Cazon, L.; Cronin, J.; San Luis, P. Facal; Ionita, F.; Monasor, M.; Olinto, A.; Pavlidou, V.; Privitera, P.; Rouille-d'Orfeuil, B.; Schmidt, F.; Venters, T.; Williams, C.; Yamamoto, T.] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [DuVernois, M. A.] Univ Hawaii, Honolulu, HI 96822 USA. [Petermann, E.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA. [Becker, B. R.; Gold, M. S.; Hague, J. D.; Matthews, J. A. J.; Miller, W.] Univ New Mexico, Albuquerque, NM 87131 USA. [BenZvi, S.; Pfendner, C.; Westerhoff, S.] Univ Wisconsin, Madison, WI USA. [Anchordoqui, L.; Goggin, L. M.] Univ Wisconsin, Milwaukee, WI 53201 USA. [Diep, P. N.; Dong, P. N.; Nhung, P. T.; Thao, N. T.] Inst Nucl Sci & Technol, Hanoi, Vietnam. RP Schussler, F (reprint author), Karlsruhe Inst Technol, Inst Kernphys, Campus North, Karlsruhe, Germany. RI dos Santos, Eva/N-6351-2013; Alvarez-Muniz, Jaime/H-1857-2015; Rosado, Jaime/K-9109-2014; Valino, Ines/J-8324-2012; De Donato, Cinzia/J-9132-2015; Vazquez, Jose Ramon/K-2272-2015; Martello, Daniele/J-3131-2012; Insolia, Antonio/M-3447-2015; de Mello Neto, Joao/C-5822-2013; Fulgione, Walter/C-8255-2016; Lozano-Bahilo, Julio/F-4881-2016; scuderi, mario/O-7019-2014; Chudoba, Jiri/G-7737-2014; Pech, Miroslav/G-5760-2014; Garcia Pinto, Diego/J-6724-2014; Pastor, Sergio/J-6902-2014; Tome, Bernardo/J-4410-2013; Espirito Santo, Maria Catarina/L-2341-2014; Pimenta, Mario/M-1741-2013; Ros, German/L-4764-2014; Di Giulio, Claudio/B-3319-2015; Pavlidou, Vasiliki/C-2944-2011; Bueno, Antonio/F-3875-2015; Parente, Gonzalo/G-8264-2015; Schussler, Fabian/G-5313-2013; Nierstenhofer, Nils/H-3699-2013; Goncalves, Patricia /D-8229-2013; Assis, Pedro/D-9062-2013; Prouza, Michael/F-8514-2014; Mandat, Dusan/G-5580-2014; Bohacova, Martina/G-5898-2014; Cazon, Lorenzo/G-6921-2014; Schovanek, Petr/G-7117-2014; Travnicek, Petr/G-8814-2014; Smida, Radomir/G-6314-2014; Ridky, Jan/H-6184-2014; de souza, Vitor/D-1381-2012; Petrolini, Alessandro/H-3782-2011; Muller, Marcio Aparecido/H-9112-2012; fulgione, walter/I-5232-2012; D'Urso, Domenico/I-5325-2012; Bleve, Carla/J-2521-2012; Brogueira, Pedro/K-3868-2012; Chinellato, Jose Augusto/I-7972-2012; Tamburro, Alessio/A-5703-2013; Yushkov, Alexey/A-6958-2013; Falcke, Heino/H-5262-2012; Ebr, Jan/H-8319-2012; Anjos, Joao/C-8335-2013; zas, enrique/I-5556-2015; Sarkar, Subir/G-5978-2011; Moura Santos, Edivaldo/K-5313-2016; Gouffon, Philippe/I-4549-2012; de Almeida, Rogerio/L-4584-2016; De Domenico, Manlio/B-5826-2014; Abreu, Pedro/L-2220-2014; Navas, Sergio/N-4649-2014; Arqueros, Fernando/K-9460-2014; Blanco, Francisco/F-1131-2015; Conceicao, Ruben/L-2971-2014; Beatty, James/D-9310-2011; Dias, Sandra/F-8134-2010; Caramete, Laurentiu/C-2328-2011; Dutan, Ioana/C-2337-2011; Aramo, Carla/D-4317-2011; Pesce, Roberto/G-5791-2011; Fauth, Anderson/F-9570-2012; Todero Peixoto, Carlos Jose/G-3873-2012; Kemp, Ernesto/H-1502-2011; Chiavassa, Andrea/A-7597-2012; Verzi, Valerio/B-1149-2012; Chinellato, Carola Dobrigkeit /F-2540-2011; Venters, Tonia/D-2936-2012; Sao Carlos Institute of Physics, IFSC/USP/M-2664-2016; Guarino, Fausto/I-3166-2012; Bonino, Raffaella/S-2367-2016; Rodriguez Frias, Maria /A-7608-2015; Oliva, Pietro/K-5915-2015; Inst. of Physics, Gleb Wataghin/A-9780-2017; De Mitri, Ivan/C-1728-2017; Nosek, Dalibor/F-1129-2017; OI dos Santos, Eva/0000-0002-0474-8863; Alvarez-Muniz, Jaime/0000-0002-2367-0803; Rosado, Jaime/0000-0001-8208-9480; Valino, Ines/0000-0001-7823-0154; De Donato, Cinzia/0000-0002-9725-1281; Vazquez, Jose Ramon/0000-0001-9217-5219; Martello, Daniele/0000-0003-2046-3910; Insolia, Antonio/0000-0002-9040-1566; de Mello Neto, Joao/0000-0002-3234-6634; Fulgione, Walter/0000-0002-2388-3809; Lozano-Bahilo, Julio/0000-0003-0613-140X; scuderi, mario/0000-0001-9026-5317; Garcia Pinto, Diego/0000-0003-1348-6735; Tome, Bernardo/0000-0002-7564-8392; Espirito Santo, Maria Catarina/0000-0003-1286-7288; Pimenta, Mario/0000-0002-2590-0908; Ros, German/0000-0001-6623-1483; Di Giulio, Claudio/0000-0002-0597-4547; Pavlidou, Vasiliki/0000-0002-0870-1368; Bueno, Antonio/0000-0002-7439-4247; Parente, Gonzalo/0000-0003-2847-0461; Schussler, Fabian/0000-0003-1500-6571; Goncalves, Patricia /0000-0003-2042-3759; Assis, Pedro/0000-0001-7765-3606; Prouza, Michael/0000-0002-3238-9597; Cazon, Lorenzo/0000-0001-6748-8395; Ridky, Jan/0000-0001-6697-1393; Petrolini, Alessandro/0000-0003-0222-7594; D'Urso, Domenico/0000-0002-8215-4542; Brogueira, Pedro/0000-0001-6069-4073; Chinellato, Jose Augusto/0000-0002-3240-6270; Falcke, Heino/0000-0002-2526-6724; Ebr, Jan/0000-0001-8807-6162; zas, enrique/0000-0002-4430-8117; Sarkar, Subir/0000-0002-3542-858X; Moura Santos, Edivaldo/0000-0002-2818-8813; Gouffon, Philippe/0000-0001-7511-4115; de Almeida, Rogerio/0000-0003-3104-2724; De Domenico, Manlio/0000-0001-5158-8594; Abreu, Pedro/0000-0002-9973-7314; Navas, Sergio/0000-0003-1688-5758; Arqueros, Fernando/0000-0002-4930-9282; Blanco, Francisco/0000-0003-4332-434X; Conceicao, Ruben/0000-0003-4945-5340; Beatty, James/0000-0003-0481-4952; Fauth, Anderson/0000-0001-7239-0288; Todero Peixoto, Carlos Jose/0000-0003-3669-8212; Chinellato, Carola Dobrigkeit /0000-0002-1236-0789; Del Peral, Luis/0000-0003-2580-5668; Rizi, Vincenzo/0000-0002-5277-6527; Mussa, Roberto/0000-0002-0294-9071; Ulrich, Ralf/0000-0002-2535-402X; Dembinski, Hans/0000-0003-3337-3850; Knapp, Johannes/0000-0003-1519-1383; Petrera, Sergio/0000-0002-6029-1255; Bonino, Raffaella/0000-0002-4264-1215; Aramo, Carla/0000-0002-8412-3846; Anzalone, Anna/0000-0003-1849-198X; Segreto, Alberto/0000-0001-7341-6603; de Jong, Sijbrand/0000-0002-3120-3367; Marsella, Giovanni/0000-0002-3152-8874; La Rosa, Giovanni/0000-0002-3931-2269; Asorey, Hernan/0000-0002-4559-8785; Andringa, Sofia/0000-0002-6397-9207; Mantsch, Paul/0000-0002-8382-7745; Navarro Quirante, Jose Luis/0000-0002-9915-1735; Cataldi, Gabriella/0000-0001-8066-7718; Maccarone, Maria Concetta/0000-0001-8722-0361; Kothandan, Divay/0000-0001-9048-7518; Castellina, Antonella/0000-0002-0045-2467; maldera, simone/0000-0002-0698-4421; Matthews, James/0000-0002-1832-4420; Aglietta, Marco/0000-0001-8354-5388; Gomez Berisso, Mariano/0000-0001-5530-0180; Salamida, Francesco/0000-0002-9306-8447; Catalano, Osvaldo/0000-0002-9554-4128; Ravignani, Diego/0000-0001-7410-8522; Guarino, Fausto/0000-0003-1427-9885; Rodriguez Frias, Maria /0000-0002-2550-4462; Oliva, Pietro/0000-0002-3572-3255; De Mitri, Ivan/0000-0002-8665-1730; Nosek, Dalibor/0000-0001-6219-200X; Sigl, Guenter/0000-0002-4396-645X FU Comision Nacional de Energia Atomica; Fundacion Antorchas; Gobierno De La Provincia de Mendoza; Municipalidad de Malargue; NDM Holdings; Valle Las Lenas FX The successful installation and commissioning of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargue; We are very grateful to the following agencies and organizations for financial support. Comision Nacional de Energia Atomica, Fundacion Antorchas, Gobierno De La Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas, in gratitude for their continuing cooperation over land access, Argentina: the Australian Research Council, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Ministerio de Uncia e Tecnologia (MCT). Brazil, AVCR AV0Z10100502 and AV0Z10100522, GAAV KJB300100801 and KJB100100904. MSMT-CR LA08016, LC527, 1M06002, and MSM0021620859, Czech Republic: Centre de Calcul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), Conseil Regional Ile-de-France, Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), Departement Sciences de l'Univers (SDU-INSU/CNRS), France: Bundesministerium fur Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Wurttemberg, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium fur Wissenschaft und Forschung, Nordrhein-Westfalen, Ministerium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands; Ministry of Science and Higher Education, Grant Nos. I P03 D 014 30, N202 090 31/0623, and PAP/218/2006, Poland; Fundacao para a Ciencia e a Tecnologia, Portugal; Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad de Madrid, Consejeria de Educacion de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de Ciencia e Innovacion, Xunta de Galicia, Spain: Science and Technology Facilities Council, United Kingdom; Department of Energy, Contract Nos. DE-AC02-07CH11359, DE-FR02-04ER41300, National Science Foundation, Grant No. 0450696, The Grainger Foundation, USA; ALFA-EC/HELEN, European Union 6th Framework Program, Grant No. MEIF-CT-2005-025057, European Union 7th Framework Program, Grant No. PIEF-GA-2008-220240, and UNESCO. NR 45 TC 255 Z9 256 U1 4 U2 72 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD MAR 8 PY 2010 VL 685 IS 4-5 BP 239 EP 246 DI 10.1016/j.physletb.2010.02.013 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 569ZE UT WOS:000275640600003 ER PT J AU Meakin, P Jamtveit, B AF Meakin, Paul Jamtveit, Bjorn TI Geological pattern formation by growth and dissolution in aqueous systems SO PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES LA English DT Review DE geological patterns; pattern formation; aqueous systems ID DIFFUSION-LIMITED AGGREGATION; YELLOWSTONE-NATIONAL-PARK; BLUE-ICE AREAS; SPHERULITIC CRYSTALLIZATION; CALCITE PRECIPITATION; STALAGMITE GROWTH; DENDRITIC GROWTH; CRYSTAL-GROWTH; FLOW; VEGETATION AB Progress towards the development of a better understanding of the formation of geological patterns in wet systems due to precipitation and dissolution is reviewed. Emphasis is placed on the formation of terraces, stalactites, stalagmites and other carbonate patterns due to precipitation from flowing supersaturated solutions and the formation of scallops by dissolution in undersaturated turbulent fluids. In addition, the formation of spherulites, dendrites and very large, essentially euhedral, crystals is discussed. In most cases, the formation of very similar patterns as a result of the freezing/melting of ice and the precipitation/dissolution of minerals strongly suggests that complexity associated with aqueous chemistry, interfacial chemistry and biological processes has only a secondary effect on these pattern formation processes. C1 [Meakin, Paul; Jamtveit, Bjorn] Univ Oslo, N-0316 Oslo, Norway. [Meakin, Paul] Ctr Adv Modeling & Simulat, Idaho Natl Lab, Idaho Falls, ID 83415 USA. [Meakin, Paul] Inst Energy Technol, Multiphase Flow Assurance Innovat Ctr, N-2007 Kjeller, Norway. RP Jamtveit, B (reprint author), Univ Oslo, N-0316 Oslo, Norway. EM bjorn.jamtveit@geo.uio.no OI Jamtveit, Bjorn/0000-0001-5700-1803 FU Norwegian Research Council FX This study was supported by a Center of Excellence grant to P. G. P. from the Norwegian Research Council. Comments by Ian J. Fairchild and an anonymous reviewer led to substantial improvements in this review. NR 110 TC 19 Z9 20 U1 2 U2 24 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 1364-5021 J9 P R SOC A JI Proc. R. Soc. A-Math. Phys. Eng. Sci. PD MAR 8 PY 2010 VL 466 IS 2115 BP 659 EP 694 DI 10.1098/rspa.2009.0189 PG 36 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 547JE UT WOS:000273882600002 ER PT J AU Fatehi, S Schwartz, CP Saykally, RJ Prendergast, D AF Fatehi, Shervin Schwartz, Craig P. Saykally, Richard J. Prendergast, David TI Nuclear quantum effects in the structure and lineshapes of the N-2 near-edge x-ray absorption fine structure spectrum SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article DE bond lengths; density functional theory; EXAFS; excited states; Franck-Condon factors; ground states; nitrogen; nuclear density; rotational-vibrational states; spectral line breadth; wave functions; XANES ID VIBRATIONAL STRUCTURE; EXCITATION-SPECTRA; CORE EXCITATIONS; AB-INITIO; ENERGY; BEAMLINE; MONOCHROMATOR; SPECTROSCOPY; RESOLUTION; MOLECULES AB We study the relative ability of several models of x-ray absorption spectra to capture the Franck-Condon structure apparent from an experiment on gaseous nitrogen. In doing so, we adopt the Born-Oppenheimer approximation and a constrained density functional theory method for computing the energies of the x-ray-excited molecule. Starting from an otherwise classical model for the spectrum, we systematically introduce more realistic physics, first by substituting the quantum mechanical nuclear radial density in the bond separation R for the classical radial density, then by adding the effect of zero-point energy and other level shifts, and finally by including explicit rovibrational quantization of both the ground and excited states. The quantization is determined exactly, using a discrete variable representation (DVR). We show that the near-edge x-ray absorption fine structure (NEXAFS) spectrum can be predicted semiquantitatively within this framework. We also address the possibility of non-trivial temperature dependence in the spectrum. By using constrained density functional theory in combination with more accurate potentials, we demonstrate that it is possible to improve the predicted spectrum. Ultimately, we establish the predictive limits of our method with respect to vibrational fine structure in NEXAFS spectra. C1 [Fatehi, Shervin; Schwartz, Craig P.; Saykally, Richard J.; Prendergast, David] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. [Fatehi, Shervin; Schwartz, Craig P.; Saykally, Richard J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. RP Prendergast, D (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. EM dgprendergast@lbl.gov RI Prendergast, David/E-4437-2010; OI Fatehi, Shervin/0000-0002-9922-923X FU Office of Basic Energy Sciences, Office of Science, U. S. Department of Energy through the LBNL Chemical Sciences Division and the Molecular Foundry [DE-AC02-05CH11231]; National Science Foundation [CHE-0809073] FX This work was supported by the Director, Office of Basic Energy Sciences, Office of Science, U. S. Department of Energy under Contract No. DE-AC02-05CH11231 through the LBNL Chemical Sciences Division and the Molecular Foundry. Computational resources were provided by NERSC, a DOE Advanced Scientific Computing Research User Facility, and the Lawrencium computational cluster resource provided by the IT division at LBNL. S. F. acknowledges support provided by National Science Foundation Grant No. CHE-0809073 and thanks Professor William H. Miller and Dr. Jian Liu for helpful discussions. NR 37 TC 8 Z9 8 U1 1 U2 13 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD MAR 7 PY 2010 VL 132 IS 9 AR 094302 DI 10.1063/1.3324889 PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 564VG UT WOS:000275245400013 PM 20210393 ER PT J AU Goldman, T AF Goldman, T. TI NEUTRINO OSCILLATIONS AND ENERGY MOMENTUM CONSERVATION SO MODERN PHYSICS LETTERS A LA English DT Article ID LAMBDA-OSCILLATIONS; QUANTUM-MECHANICS AB A description of neutrino oscillation phenomena is presented which is based on relativistic quantum mechanics with four-momentum conservation. This is different from both conventional approaches which arbitrarily use either equal energies or equal momenta for the different neutrino mass eigenstates. Both entangled state and source dependence aspects are also included. The time dependence of the wave function is found to be crucial to recovering the conventional result to second order in the neutrino masses. An ambiguity appears at fourth order which generally leads to source dependence, but the standard formula can be promoted to this order by a plausible convention. C1 Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. RP Goldman, T (reprint author), Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA. NR 19 TC 3 Z9 3 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE SN 0217-7323 J9 MOD PHYS LETT A JI Mod. Phys. Lett. A PD MAR 7 PY 2010 VL 25 IS 7 BP 479 EP 487 DI 10.1142/S0217732310032706 PG 9 WC Physics, Nuclear; Physics, Particles & Fields; Physics, Mathematical SC Physics GA 573RE UT WOS:000275931500001 ER PT J AU Lee, JS Wang, XQ Luo, HM Dai, S AF Lee, Je Seung Wang, Xiqing Luo, Huimin Dai, Sheng TI Fluidic Carbon Precursors for Formation of Functional Carbon under Ambient Pressure Based on Ionic Liquids SO ADVANCED MATERIALS LA English DT Article ID ORDERED MESOPOROUS CARBON; OXYGEN REDUCTION REACTION; IONOTHERMAL SYNTHESIS; FUEL-CELLS; CATALYSTS; NANOPARTICLES; PERFORMANCE; STORAGE; IMIDAZOLIUM; FABRICATION AB A new strategy for the preparation of functional porous carbons is developed via direct, ambient-pressure, thermal pyrolysis of task-specific ionic liquids (ILs). The simple synthesis lies in the synergistic use of the negligible volatility of the ILs and incorporation of the crosslinkable nitrile groups in the anions. The resulting carbon materials at 800 degrees C retain an extremely high content of nitrogen (up to 18 at%). C1 [Lee, Je Seung; Wang, Xiqing; Dai, Sheng] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. [Luo, Huimin] Oak Ridge Natl Lab, Nucl Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Dai, S (reprint author), Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. EM dais@ornl.gov RI Wang, Xiqing/E-3062-2010; Dai, Sheng/K-8411-2015 OI Wang, Xiqing/0000-0002-1843-008X; Dai, Sheng/0000-0002-8046-3931 FU U.S. Department of Energy [DE-AC05-00OR22725] FX This research was sponsored by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy, under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC. Supporting Information is available online from Wiley InterScience or from the author. NR 43 TC 161 Z9 165 U1 17 U2 137 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0935-9648 J9 ADV MATER JI Adv. Mater. PD MAR 5 PY 2010 VL 22 IS 9 BP 1004 EP + DI 10.1002/adma.200903403 PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter SC Chemistry; Science & Technology - Other Topics; Materials Science; Physics GA 570LM UT WOS:000275679600015 PM 20217829 ER PT J AU Thanos, PK Habibi, R Michaelides, M Patel, UB Suchland, K Anderson, BJ Robinson, JK Wang, GJ Grandy, DK Volkow, ND AF Thanos, Panayotis K. Habibi, Rahila Michaelides, Michael Patel, Ujval B. Suchland, Katherine Anderson, Brenda J. Robinson, John K. Wang, Gene-Jack Grandy, David K. Volkow, Nora D. TI Dopamine D4 receptor (D4R) deletion in mice does not affect operant responding for food or cocaine SO BEHAVIOURAL BRAIN RESEARCH LA English DT Article DE Reward; Addiction; Reinforcement; Cognition ID D-4 RECEPTOR; NOVELTY SEEKING; MUTANT MICE; GENE; POLYMORPHISM; DISORDER; RATS; IMPULSIVITY; D2 AB In this study we examined the genetic contribution of the D4R in food and cocaine self-administration using D4R mice. Mice were examined for operant responding to food pellets or intravenous cocaine. Compared to wild-type mice (D4R(+/+)), both heterozygous (D4R(+/-)) and knockout (D4R(-/-)) mice showed no difference in responding for food or cocaine. Our findings suggest that the D4R is not directly involved in mediating operant response behaviors for food or cocaine. Published by Elsevier B.V. C1 [Thanos, Panayotis K.; Habibi, Rahila; Michaelides, Michael; Patel, Ujval B.; Wang, Gene-Jack; Volkow, Nora D.] Brookhaven Natl Lab, Dept Med, Behav Neuropharmacol & Neuroimaging Lab, Upton, NY 11973 USA. [Thanos, Panayotis K.; Volkow, Nora D.] NIAAA, Lab Neuroimaging, NIH, Bethesda, MD USA. [Thanos, Panayotis K.; Habibi, Rahila; Michaelides, Michael; Anderson, Brenda J.; Robinson, John K.] SUNY Stony Brook, Dept Psychol, Stony Brook, NY 11794 USA. [Suchland, Katherine; Grandy, David K.] Oregon Hlth & Sci Univ, Portland, OR USA. RP Thanos, PK (reprint author), Brookhaven Natl Lab, Dept Med, Behav Neuropharmacol & Neuroimaging Lab, Upton, NY 11973 USA. EM thanos@bnl.gov RI Michaelides, Michael/K-4736-2013 OI Michaelides, Michael/0000-0003-0398-4917 FU NIAAA (intramural Research Program, LNI); NIH IRTA program; Stony Brook URECA program; BNL SULI program FX Support contributed by: NIAAA (intramural Research Program, LNI), the NIH IRTA program, the Stony Brook URECA program and the BNL SULI program. We also thank N. Londono for her assistance with the D4 mouse breeding colony. NR 31 TC 9 Z9 9 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-4328 J9 BEHAV BRAIN RES JI Behav. Brain Res. PD MAR 5 PY 2010 VL 207 IS 2 BP 508 EP 511 DI 10.1016/j.bbr.2009.10.020 PG 4 WC Behavioral Sciences; Neurosciences SC Behavioral Sciences; Neurosciences & Neurology GA 558RC UT WOS:000274761800033 PM 19853629 ER PT J AU Pan, C Park, BH McDonald, WH Carey, PA Banfield, JF VerBerkmoes, NC Hettich, RL Samatova, NF AF Pan, Chongle Park, Byung H. McDonald, William H. Carey, Patricia A. Banfield, Jillian F. VerBerkmoes, Nathan C. Hettich, Robert L. Samatova, Nagiza F. TI A high-throughput de novo sequencing approach for shotgun proteomics using high-resolution tandem mass spectrometry SO BMC BIOINFORMATICS LA English DT Article ID POSTTRANSLATIONAL MODIFICATIONS; RHODOPSEUDOMONAS-PALUSTRIS; LC-MS/MS; IDENTIFICATION; PROTEINS; TAGS; PERFORMANCE; ALGORITHM; PEPTIDES; DATABASE AB Background: High-resolution tandem mass spectra can now be readily acquired with hybrid instruments, such as LTQ-Orbitrap and LTQ-FT, in high-throughput shotgun proteomics workflows. The improved spectral quality enables more accurate de novo sequencing for identification of post-translational modifications and amino acid polymorphisms. Results: In this study, a new de novo sequencing algorithm, called Vonode, has been developed specifically for analysis of such high-resolution tandem mass spectra. To fully exploit the high mass accuracy of these spectra, a unique scoring system is proposed to evaluate sequence tags based primarily on mass accuracy information of fragment ions. Consensus sequence tags were inferred for 11,422 spectra with an average peptide length of 5.5 residues from a total of 40,297 input spectra acquired in a 24-hour proteomics measurement of Rhodopseudomonas palustris. The accuracy of inferred consensus sequence tags was 84%. According to our comparison, the performance of Vonode was shown to be superior to the PepNovo v2.0 algorithm, in terms of the number of de novo sequenced spectra and the sequencing accuracy. Conclusions: Here, we improved de novo sequencing performance by developing a new algorithm specifically for high-resolution tandem mass spectral data. The Vonode algorithm is freely available for download at http://compbio.ornl.gov/Vonode. C1 [Pan, Chongle; Park, Byung H.; Samatova, Nagiza F.] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. [Pan, Chongle; McDonald, William H.; VerBerkmoes, Nathan C.; Hettich, Robert L.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN USA. [Samatova, Nagiza F.] N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. [Banfield, Jillian F.] Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA. [Carey, Patricia A.] Univ Tennessee, Dept Comp Sci, Knoxville, TN 37996 USA. RP Pan, C (reprint author), Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA. EM panc@ornl.gov; hettichrl@ornl.gov; samatovan@ornl.gov RI McDonald, W. Hayes/B-4109-2016; Hettich, Robert/N-1458-2016 OI McDonald, W. Hayes/0000-0002-3510-426X; Hettich, Robert/0000-0001-7708-786X FU U.S. Department of Energy, Office of Advanced Scientific Computing Research and Office of Biological and Environmental Research [DOE-AC05-00OR22725] FX We thank D. Pelletier for R. palustris cell samples. We thank John Yates' group at The Scripps Research Institute for DTASelect and Pavel Pevzner's group at University of California at San Diego for PepNovo v2.0. The computational work of this research was supported by the "Ultrascale Computational Modeling of Phenotype-Specific Metabolic Processes in Microbial Communities" project from the U.S. Department of Energy, Office of Advanced Scientific Computing Research and Office of Biological and Environmental Research. The experimental work was supported by The U. S. Department of Energy, Office of Biological and Environmental Research, Genomics: Genomes to Life Program. Oak Ridge National Laboratory is managed by University of Tennessee-Battelle LLC for the Department of Energy under contract DOE-AC05-00OR22725. NR 36 TC 30 Z9 32 U1 0 U2 12 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2105 J9 BMC BIOINFORMATICS JI BMC Bioinformatics PD MAR 5 PY 2010 VL 11 AR 18 DI 10.1186/1471-2105-11-118 PG 14 WC Biochemical Research Methods; Biotechnology & Applied Microbiology; Mathematical & Computational Biology SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Mathematical & Computational Biology GA 568VR UT WOS:000275552500001 PM 20205730 ER PT J AU Fritz-Laylin, LK Prochnik, SE Ginger, ML Dacks, JB Carpenter, ML Field, MC Kuo, A Paredez, A Chapman, J Pham, J Shu, SQ Neupane, R Cipriano, M Mancuso, J Tu, H Salamov, A Lindquist, E Shapiro, H Lucas, S Grigoriev, IV Cande, WZ Fulton, C Rokhsar, DS Dawson, SC AF Fritz-Laylin, Lillian K. Prochnik, Simon E. Ginger, Michael L. Dacks, Joel B. Carpenter, Meredith L. Field, Mark C. Kuo, Alan Paredez, Alex Chapman, Jarrod Pham, Jonathan Shu, Shengqiang Neupane, Rochak Cipriano, Michael Mancuso, Joel Tu, Hank Salamov, Asaf Lindquist, Erika Shapiro, Harris Lucas, Susan Grigoriev, Igor V. Cande, W. Zacheus Fulton, Chandler Rokhsar, Daniel S. Dawson, Scott C. TI The Genome of Naegleria gruberi Illuminates Early Eukaryotic Versatility SO CELL LA English DT Article ID FATTY-ACID SYNTHESIS; TRICHOMONAS-VAGINALIS; DICTYOSTELIUM-DISCOIDEUM; GIARDIA-LAMBLIA; GENE-EXPRESSION; FE-HYDROGENASE; EVOLUTION; PROTEINS; ORIGIN; CELL AB Genome sequences of diverse free-living protists are essential for understanding eukaryotic evolution and molecular and cell biology. The free-living amoebo-flagellate Naegleria gruberi belongs to a varied and ubiquitous protist clade (Heterolobosea) that diverged from other eukaryotic lineages over a billion years ago. Analysis of the 15,727 protein-coding genes encoded by Naegleria's 41 Mb nuclear genome indicates a capacity for both aerobic respiration and anaerobic metabolism with concomitant hydrogen production, with fundamental implications for the evolution of organelle metabolism. The Naegleria genome facilitates substantially broader phylogenomic comparisons of free-living eukaryotes than previously possible, allowing us to identify thousands of genes likely present in the pan-eukaryotic ancestor, with 40% likely eukaryotic inventions. Moreover, we construct a comprehensive catalog of amoeboid-motility genes. The Naegleria genome, analyzed in the context of other protists, reveals a remarkably complex ancestral eukaryote with a rich repertoire of cytoskeletal, sexual, signaling, and metabolic modules. C1 [Fritz-Laylin, Lillian K.; Carpenter, Meredith L.; Paredez, Alex; Cande, W. Zacheus; Rokhsar, Daniel S.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [Neupane, Rochak] Univ Calif Berkeley, Ctr Integrat Genom, Berkeley, CA 94720 USA. [Prochnik, Simon E.; Kuo, Alan; Chapman, Jarrod; Shu, Shengqiang; Tu, Hank; Salamov, Asaf; Lindquist, Erika; Shapiro, Harris; Lucas, Susan; Grigoriev, Igor V.; Rokhsar, Daniel S.] US DOE, Joint Genome Inst, Walnut Creek, CA 94598 USA. [Ginger, Michael L.] Univ Lancaster, Div Biomed & Life Sci, Sch Hlth & Med, Lancaster LA1 4YQ, England. [Dacks, Joel B.] Univ Alberta, Dept Cell Biol, Edmonton, AB, Canada. [Dacks, Joel B.; Field, Mark C.] Univ Cambridge, Dept Pathol, Cambridge CB2 1QT, England. [Pham, Jonathan; Cipriano, Michael; Dawson, Scott C.] Univ Calif Davis, Dept Microbiol, Davis, CA 95616 USA. [Mancuso, Joel] Gatan Inc, Pleasanton, CA 94588 USA. [Fulton, Chandler] Brandeis Univ, Dept Biol, Waltham, MA 02454 USA. RP Rokhsar, DS (reprint author), Univ Calif Berkeley, Dept Mol & Cell Biol, 545 Life Sci Addit, Berkeley, CA 94720 USA. EM dsrokhsar@gmail.com; scdawson@ucdavis.edu RI Carpenter, Meredith/B-4290-2011; Paredez, Alexander/B-9799-2009; Paredez, Alexander/E-7171-2014; OI Paredez, Alexander/0000-0002-9298-3264; Paredez, Alexander/0000-0002-9298-3264; Carpenter, Meredith/0000-0002-9798-9374; Fritz-Laylin, Lillian/0000-0002-9237-9403; Field, Mark/0000-0002-4866-2885; Ginger, Michael/0000-0002-9643-8482 FU University of California, Lawrence Berkeley National Laboratory [DE-AC02-05CH11231]; Lawrence Livermore National Laboratory [DE-AC52-07NA27344]; Los Alamos National Laboratory [DE-AC02-06NA25396]; Royal Society University; Wellcome Trust; U. of Alberta FX We thank Woodrow Fischer, Matt Welch, Dyche Mullins, David Drubin, and Anosha Siripala for discussions; Jeremy Thorner, Nicole King, Jason Stajich, Elaine Lai, and Stephen Remillard for comments on the manuscript; Zoe Assaf for manuscript editing. This work was performed under the auspices of the US Department of Energy's Office of Science, Biological and Environmental Research Program and by the University of California, Lawrence Berkeley National Laboratory under contract No. DE-AC02-05CH11231, Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344, and Los Alamos National Laboratory under contract No. DE-AC02-06NA25396. Additional support was provided by a Royal Society University Research Fellowship to M.L.G., a Tien Scholars Fellowship in Environmental Sciences and Biodiversity to L.K.F.-L., a Wellcome Trust and Parke-Davis Fellowship, as well as start-up funding from the U. of Alberta, to J.B.D., and funding by Wellcome Trust for M.C.F. NR 74 TC 194 Z9 200 U1 5 U2 37 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0092-8674 J9 CELL JI Cell PD MAR 5 PY 2010 VL 140 IS 5 BP 631 EP 642 DI 10.1016/j.cell.2010.01.032 PG 12 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA 564EZ UT WOS:000275197400013 PM 20211133 ER PT J AU Bagus, PS Nelin, CJ Ilton, ES Baron, M Abbott, H Primorac, E Kuhlenbeck, H Shaikhutdinov, S Freund, HJ AF Bagus, P. S. Nelin, C. J. Ilton, E. S. Baron, M. Abbott, H. Primorac, E. Kuhlenbeck, H. Shaikhutdinov, S. Freund, H. -J. TI The complex core level spectra of CeO2: An analysis in terms of atomic and charge transfer effects SO CHEMICAL PHYSICS LETTERS LA English DT Article ID TRANSITION-METALS; MULTIPLET STRUCTURE; HOLE STATES; PHOTOEMISSION; NIO; DEGENERACY; SPECTROSCOPY; EXCITATIONS; ABSORPTION; XPS AB We present a rigorous parameter-free theoretical treatment of the Ce 4s and 5s photoelectron spectra of CeO2. The currently accepted model explains the satellite structure in the photoelectron spectra in terms of mixed valence (Ce 4f(0) O 2p(6), Ce 4f(1) O 2p(5), and Ce 4f(2) O 2p(4)) configurations. We show that charge transfer (CT) into Ce 5d as well as configurations involving intra-atomic movement of charge must be considered in addition and compute their contributions to the spectra. (C) 2010 Elsevier B.V. All rights reserved. C1 [Baron, M.; Abbott, H.; Primorac, E.; Kuhlenbeck, H.; Shaikhutdinov, S.; Freund, H. -J.] Max Planck Gesell, Fritz Haber Inst, Chem Phys Abt, D-14195 Berlin, Germany. [Bagus, P. S.] Univ N Texas, Dept Chem, Denton, TX 76203 USA. [Nelin, C. J.] Maurys Trail, Austin, TX 78730 USA. [Ilton, E. S.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Kuhlenbeck, H (reprint author), Max Planck Gesell, Fritz Haber Inst, Chem Phys Abt, Faradayweg 4-6, D-14195 Berlin, Germany. EM kuhlenbeck@fhi-berlin.mpg.de RI Bagus, Paul/M-1273-2015 FU Office of Basic Energy Sciences, U.S. DOE; Alexander von Humboldt foundation; DFG [SFB 546] FX We acknowledge support by the Geosciences Research Program, Office of Basic Energy Sciences, U.S. DOE, the Alexander von Humboldt foundation, and the DFG through their SFB 546, 'Transition Metal Oxide Aggregates'. Computer support from the Pittsburgh Supercomputer center is also acknowledged. A portion of the research was performed in the Environmental Molecular Sciences Laboratory at PNNL. NR 27 TC 23 Z9 23 U1 1 U2 26 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD MAR 5 PY 2010 VL 487 IS 4-6 BP 237 EP 240 DI 10.1016/j.cplett.2010.01.041 PG 4 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 556JW UT WOS:000274587900015 ER PT J AU Goswami, M Sumpter, BG Mays, J AF Goswami, Monojoy Sumpter, Bobby G. Mays, Jimmy TI Controllable stacked disk morphologies of charged diblock copolymers SO CHEMICAL PHYSICS LETTERS LA English DT Article ID PARTICLE DYNAMICS SIMULATIONS; BLOCK-COPOLYMERS; PHASE-BEHAVIOR; DRUG-DELIVERY; MICELLES; POLYMERSOMES; VESICLES; MODEL; DNA AB Monte Carlo simulations are used to demonstrate the controlled stacking of charged block copolymer disk morphologies that can be obtained under certain thermodynamic conditions. We examine a partially charged block copolymer where 75% of the blocks are neutral and 25% of the blocks are charged. The presence of strong electrostatic interactions promotes charge agglomeration thereby changing morphologies in these systems. This study relates different thermodynamic quantities for which disk-like stackings can be obtained. The long-range order can be sustained even if hydrophobicity is increased albeit with lower dimensional structures. Our simulation results agree very well with recent experiments and are consistent with theoretical observations of counterion adsorption on flexible polyelectrolytes. (C) 2010 Elsevier B.V. All rights reserved. C1 [Goswami, Monojoy; Sumpter, Bobby G.; Mays, Jimmy] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Mays, Jimmy] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. RP Goswami, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM goswamim@ornl.gov RI Goswami, Monojoy/G-7943-2012; Sumpter, Bobby/C-9459-2013 OI Goswami, Monojoy/0000-0002-4473-4888; Sumpter, Bobby/0000-0001-6341-0355 FU US Department of Energy (DoE) [DE-AC05-00OR22725] FX This work is supported by the Center for Nanophase Materials Sciences, sponsored by the Division of Scientific User Facilities, US Department of Energy (DoE). This article has been authored by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the US-DoE. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. NR 45 TC 6 Z9 6 U1 2 U2 18 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD MAR 5 PY 2010 VL 487 IS 4-6 BP 272 EP 278 DI 10.1016/j.cplett.2010.01.042 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 556JW UT WOS:000274587900022 ER PT J AU Browning, ND Campbell, GH Evans, JE LaGrange, TB Reed, BW AF Browning, Nigel D. Campbell, Geoffrey H. Evans, James E. LaGrange, Thomas B. Reed, Bryan W. TI Electron Microscopy and Spectroscopy on the Ultrafast Timescale SO CHEMPHYSCHEM LA English DT Article DE 4D-electron microscope; dynamic transmission electron microscope; electron energy loss spectroscopy; photoemission; ultrafast lasers ID TRANSIENT STRUCTURES; DIFFRACTION; DYNAMICS C1 [Browning, Nigel D.; Campbell, Geoffrey H.; LaGrange, Thomas B.; Reed, Bryan W.] Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Phys & Life Sci Directorate, Livermore, CA 94550 USA. [Browning, Nigel D.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95618 USA. [Browning, Nigel D.; Evans, James E.] Univ Calif Davis, Dept Mol & Cellular Biol, Davis, CA 95618 USA. RP Browning, ND (reprint author), Lawrence Livermore Natl Lab, Condensed Matter & Mat Div, Phys & Life Sci Directorate, POB 808, Livermore, CA 94550 USA. EM nbrowning@ucdavis.edu RI Campbell, Geoffrey/F-7681-2010; Reed, Bryan/C-6442-2013; OI Browning, Nigel/0000-0003-0491-251X FU U.S. Department of Energy by Lawrence Livermore National Laboratory; Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy [DE-AC52-07NA27344] FX This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory and supported by the Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy under Contract DE-AC52-07NA27344. NR 24 TC 3 Z9 3 U1 1 U2 8 PU WILEY-V C H VERLAG GMBH PI WEINHEIM PA PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY SN 1439-4235 J9 CHEMPHYSCHEM JI ChemPhysChem PD MAR 5 PY 2010 VL 11 IS 4 BP 781 EP 782 DI 10.1002/cphc.200900937 PG 2 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 575JF UT WOS:000276062600002 PM 20148430 ER PT J AU Foster, JT Silling, SA Chen, WW AF Foster, J. T. Silling, S. A. Chen, W. W. TI Viscoplasticity using peridynamics SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article DE peridynamics; peridynamic states; plasticity; non-local theory; integral equations; continuum mechanics; Taylor impact ID ELASTICITY THEORY; DEFORMATION; PENETRATION; FRACTURE; TARGETS; MODEL AB Peridynamics is a continuum reformulation of the standard theory of solid mechanics Unlike the partial differential equations of the standard theory, the basic equations of peridynamics are applicable even when cracks and other singularities appear in the deformation field The assumptions in the original peridynamic theory resulted in severe restrictions on the types of material response that could be modeled, including a limitation on the Poisson ratio Recent theoretical developments have shown promise for overcoming, these limitations, but have not previously incorporated rate dependence and have not been demonstrated in realistic applications In this paper, a new method for implementing a rate-dependent plastic material within a peridynamic numerical model in proposed and demonstrated The resulting material model implementation is fitted to rate-dependent test data on 6061-T6 aluminum alloy It is shown that with this material model, the peridynamic method accurately reproduces the experimental results for Taylor impact tests over a wide range of impact velocities The resulting model retains the advantages of the peridynamic formulation regarding discontinuities while allowing greater generality in material response than was previously possible Copyright (C) 2009 John Wiley & Sons, Ltd C1 [Foster, J. T.; Silling, S. A.] Sandia Natl Labs, Albuquerque, NM 87123 USA. [Chen, W. W.] Purdue Univ, W Lafayette, IN 47907 USA. RP Foster, JT (reprint author), POB 5800,MS 1160, Albuquerque, NM 87185 USA. RI Davidi, Gal/E-7089-2011; Foster, John/K-5291-2016 OI Foster, John/0000-0002-7173-4728 FU DOE/DoD Joint Munitions Technology Program FX Contract/grant sponsor DOE/DoD Joint Munitions Technology Program NR 24 TC 48 Z9 50 U1 2 U2 35 PU JOHN WILEY & SONS LTD PI CHICHESTER PA THE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLAND SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD MAR 5 PY 2010 VL 81 IS 10 BP 1242 EP 1258 DI 10.1002/nme.2725 PG 17 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA 560TB UT WOS:000274924700002 ER PT J AU Holtzman, R Silin, DB Patzek, TW AF Holtzman, R. Silin, D. B. Patzek, T. W. TI Frictional granular mechanics: A variational approach SO INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING LA English DT Article DE micromechanics; gram-scale simulations; intergranular friction; quasi-static model; effective elastic moduli; principle of least work ID DISCRETE ELEMENT SIMULATIONS; FORCE-DISPLACEMENT MODEL; NONLINEAR ELASTICITY; SPHERICAL-PARTICLES; FLOW SIMULATIONS; CONTACT; SPHERES; MEDIA; BEHAVIOR; SHEAR AB The mechanical properties of a cohesionless granular material are evaluated from gram-scale simulations Intergranular interactions. Including friction and sliding, we modeled by a set of contact ruts based oil the theories of Hertz. Mindlin and Deiesiewicz A computer-generated, irregular pack of spherical grams is loaded by incremental displacement of its boundaries Deformation is described by a sequence of static equilibrium configurations of the pack A variational approach is employed to find the equilibrium configurations by minimizing the total work against the intergranular loads Effective elastic moduli are evaluated from the intergranular forces and the deformation of the pack Good agreement between the computed and measured moduli, achieved with no adjustment of material parameters, establishes the physical soundness of the proposed model Copyright (C) 2009 John Wiley & Sons, Ltd C1 [Holtzman, R.; Patzek, T. W.] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. [Silin, D. B.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Patzek, T. W.] Univ Texas Austin, Dept Petr & Geosyst Engn, Austin, TX 78712 USA. RP Holtzman, R (reprint author), MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave,Bldg 48, Cambridge, MA 02139 USA. RI Holtzman, Ran/G-7630-2012 OI Holtzman, Ran/0000-0003-0826-6826 FU NETL under DOE [DE-FC26-05NT42664] FX Contract/grant sponsor NETL under DOE contract/grant number #DE-FC26-05NT42664 NR 56 TC 4 Z9 4 U1 1 U2 7 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0029-5981 J9 INT J NUMER METH ENG JI Int. J. Numer. Methods Eng. PD MAR 5 PY 2010 VL 81 IS 10 BP 1259 EP 1280 DI 10.1002/nme.2727 PG 22 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA 560TB UT WOS:000274924700003 ER PT J AU Abia, JA Putnam, J Mriziq, K Guiochon, GA AF Abia, Jude A. Putnam, Joel Mriziq, Khaled Guiochon, Georges A. TI Design and implementation of an array of micro-electrochemical detectors for two-dimensional liquid chromatography-Proof of principle SO JOURNAL OF CHROMATOGRAPHY A LA English DT Article DE Flat wide column; Micro-electrochemical detectors; Planar chromatography; Two-dimensional chromatography ID THIN-LAYER-CHROMATOGRAPHY; PLANAR CHROMATOGRAPHY; RADIAL HETEROGENEITY; MONOLITHIC COLUMN AB Simultaneous two-dimensional liquid chromatography (2D-LC) is an implementation of two-dimensional liquid chromatography which has the potential to provide very fast, yet highly efficient separations. It is based on the use of time x space and space x space separation systems. The basic principle of this instrument has been validated long ago by the success of two-dimensional thin layer chromatography. The construction of a pressurized wide and flat column (100 mm x 100 mm x I mm) operated under an inlet pressure of Lip to 50 bar was described previously. However, to become a modern analytical method, simultaneous 2D-LC requires the development of detectors suitable for the monitoring of the composition of the eluent of this pressurized planar, wide column. An array of five equidistant micro-electrochemical sensors was built for this purpose and tested. Each sensor is a three-electrode system, with the working electrode being a 25 mu m polished platinum micro-electrode. The auxiliary electrode is a thin platinum wire and the reference electrode an Ag/AgCl (3 M sat. KCl) electrode. In this first implementation, proof of principle is demonstrated, but the final instrument will require a much larger array. (C) 2010 Elsevier B.V. All rights reserved. C1 [Abia, Jude A.; Putnam, Joel; Mriziq, Khaled; Guiochon, Georges A.] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. [Abia, Jude A.; Putnam, Joel; Mriziq, Khaled; Guiochon, Georges A.] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA. RP Guiochon, GA (reprint author), Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA. EM guiochon@utk.edu OI Putnam, Joel/0000-0002-5464-4587 FU United States Department of Energy [DE-FG05-88-ER-13869] FX This work was supported in part by Grant DE-FG05-88-ER-13869 of the United States Department of Energy and by the collaborative agreement between the University of Tennessee and Oak Ridge National Laboratory. NR 26 TC 5 Z9 5 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0021-9673 J9 J CHROMATOGR A JI J. Chromatogr. A PD MAR 5 PY 2010 VL 1217 IS 10 BP 1695 EP 1700 DI 10.1016/j.chroma.2010.01.021 PG 6 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 563LC UT WOS:000275132500018 PM 20132935 ER PT J AU Tomanicek, SJ Blakeley, MP Cooper, J Chen, Y Afonine, PV Coates, L AF Tomanicek, Stephen J. Blakeley, Matthew P. Cooper, Jonathan Chen, Yu Afonine, Pavel V. Coates, Leighton TI Neutron Diffraction Studies of a Class A beta-Lactamase Toho-1 E166A/R274N/R276N Triple Mutant SO JOURNAL OF MOLECULAR BIOLOGY LA English DT Article DE Toho-1; neutron diffraction; neutron structure; beta-lactamase; extended-spectrum beta-lactamases (ESBLs) ID ULTRAHIGH-RESOLUTION STRUCTURE; EXTENDED-SPECTRUM; ANGSTROM RESOLUTION; CRYSTAL-STRUCTURE; ANTIBIOTIC-RESISTANCE; ACYLATION REACTION; ESCHERICHIA-COLI; GENERAL BASE; MECHANISM; INTERMEDIATE AB beta-Lactam antibiotics have been used effectively over several decades against many types of bacterial infectious diseases. However, the most common cause of resistance to the beta-lactam antibiotics is the production of beta-lactamase enzymes that inactivate beta-lactams by rapidly hydrolyzing the amide group of the beta-lactam ring. Specifically, the class A extended-spectrum beta-lactamases (ESBLs) and inhibitor-resistant enzymes arose that were capable of hydrolyzing penicillins and the expanded-spectrum cephalosporins and monobactams in resistant bacteria, which lead to treatment problems in many clinical settings. A more complete understanding of the mechanism of catalysis of these ESBL enzymes will impact current antibiotic drug discovery efforts. Here, we describe the neutron structure of the class A, CTX-M-type ESBL Toho-1 E166A/R274N/R276N triple mutant in its apo form, which is the first reported neutron structure of a beta-lactamase enzyme. This neutron structure clearly reveals the active-site protonation states and hydrogen-bonding network of the apo Toho-1 ESBL prior to substrate binding and subsequent acylation. The protonation states of the active-site residues Ser70, Lys73, Ser130, and Lys234 in this neutron structure are consistent with the prediction of a proton transfer pathway from Lys73 to Ser130 that is likely dependent on the conformation of Lys73, which has been hypothesized to be coupled to the protonation state of Glu166 during the acylation reaction. Thus, this neutron structure is in agreement with a proposed mechanism for acylation that identifies Glu166 as the general base for catalysis. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Tomanicek, Stephen J.; Coates, Leighton] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA. [Blakeley, Matthew P.] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France. [Cooper, Jonathan] UCL, Dept Med, Ctr Amyloidosis & Acute Phase Prot, Lab Prot Crystallog, London NW3 2PF, England. [Chen, Yu] Univ S Florida, Coll Med, Dept Mol Med, Tampa, FL 33612 USA. [Afonine, Pavel V.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Coates, L (reprint author), Oak Ridge Natl Lab, Neutron Scattering Sci Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM coatesl@ornl.gov RI Chen, Yu/A-4714-2012; Blakeley, Matthew/G-7984-2015; OI Blakeley, Matthew/0000-0002-6412-4358; Coates, Leighton/0000-0003-2342-049X FU U.S. Department of Energy [DE-AC05-00OR22725, DE-AC02-05CH11231]; Office of Biological and Envirornmental Research; NIH/NIGMS [1R01GM071939-01] FX This research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle LLC for the U.S. Department of Energy under contract no. DE-AC05-00OR22725. This research at Oak Ridge National Laboratory's Center for Structural Molecular Biology was supported by the Office of Biological and Envirornmental Research, using facilities supported by the U.S. Department of Energy, managed by UT-Battelle, LLC, under contract no. DE-AC05-00OR22725. P.A. gratefully acknowledges the financial support of NIH/NIGMS under grant no. 1R01GM071939-01 and the support of the U.S. Department of Energy under contract no. DE-AC02-05CH11231. NR 46 TC 20 Z9 20 U1 2 U2 15 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-2836 J9 J MOL BIOL JI J. Mol. Biol. PD MAR 5 PY 2010 VL 396 IS 4 BP 1070 EP 1080 DI 10.1016/j.jmb.2009.12.036 PG 11 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA 566PR UT WOS:000275385600019 PM 20036259 ER PT J AU Volotskova, O Shashurin, A Keidar, M Raitses, Y Demidov, V Adams, S AF Volotskova, O. Shashurin, A. Keidar, M. Raitses, Y. Demidov, V. Adams, S. TI Ignition and temperature behavior of a single-wall carbon nanotube sample SO NANOTECHNOLOGY LA English DT Article ID ARC-DISCHARGE; RECONSTRUCTION; SPECTROSCOPY; DIAMETER; NM AB The electrical resistance of mats of single-wall carbon nanotubes (SWNTs) is measured as a function of mat temperature under various helium pressures, in vacuum and in atmospheric air. The objective of this paper is to study the thermal stability of SWNTs produced in a helium arc discharge in the experimental conditions close to natural conditions of SWNT growth in an arc, using a furnace instead of an arc discharge. For each tested condition, there is a temperature threshold at which the mat's resistance reaches its minimum. The threshold value depends on the helium pressure. An increase of the temperature above the temperature threshold leads to the destruction of SWNT bundles at a certain critical temperature. For instance, the critical temperature is about 1100 K in the case of helium background at a pressure of about 500 Torr. Based on experimental data on critical temperature it is suggested that SWNTs produced by an anodic arc discharge and collected in the web area outside the arc plasma most likely originate from the arc discharge peripheral region. C1 [Volotskova, O.; Shashurin, A.; Keidar, M.] George Washington Univ, Dept Mech & Aerosp Engn, Washington, DC 20052 USA. [Raitses, Y.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Demidov, V.; Adams, S.] USAF, Res Lab, WPAFB, Dayton, OH 45433 USA. [Demidov, V.; Adams, S.] W Virginia Univ, Dept Phys, Morgantown, WV 26506 USA. RP Volotskova, O (reprint author), George Washington Univ, Dept Mech & Aerosp Engn, Washington, DC 20052 USA. RI Demidov, Vladimir/A-4247-2013 OI Demidov, Vladimir/0000-0002-2672-7684 FU AFOSR; NSF/DOE Partnership in Plasma Science and Technology [CBET-0853777]; DOE [DE-SC0001169]; Office of Fusion Energy Sciences FX This work was supported in part by AFOSR and by NSF/DOE Partnership in Plasma Science and Technology (NSF grant CBET-0853777, DOE grant DE-SC0001169). We would like to acknowledge PPPL Offsite Research Program supported by the Office of Fusion Energy Sciences for support of the arc experiments and diagnostics. NR 32 TC 17 Z9 17 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0957-4484 J9 NANOTECHNOLOGY JI Nanotechnology PD MAR 5 PY 2010 VL 21 IS 9 AR 095705 DI 10.1088/0957-4484/21/9/095705 PG 5 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied SC Science & Technology - Other Topics; Materials Science; Physics GA 553IQ UT WOS:000274360300030 PM 20130346 ER PT J AU Aaltonen, T Adelman, J Gonzalez, BA Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, VE Barnett, BA Barria, P Bartos, P Bauer, G Beauchemin, PH Bedeschi, F Beecher, D Behari, S Bellettini, G Bellinger, J Benjamin, D Beretvas, A Berge, D Bhatti, A Binkley, M Bisello, D Bizjak, I Blair, RE Blocker, C Blumenfeld, B Bocci, A Bodek, A Boisvert, V Bortoletto, D Boudreau, J Boveia, A Brau, B Bridgeman, A Brigliadori, L Bromberg, C Brubaker, E Budagov, J Budd, HS Budd, S Burkett, K Busetto, G Bussey, P Buzatu, A Byrum, KL Cabrera, S Calancha, C Camarda, S Campanelli, M Campbell, M Canelli, F Canepa, A Carls, B Carlsmith, D Carosi, R Carrillo, S Carron, S Casal, B Casarsa, M Castro, A Catastini, P Cauz, D Cavaliere, V Cavalli-Sforza, M Cerri, A Cerrito, L Chang, SH Chen, YC Chertok, M Chiarelli, G Chlachidze, G Chlebana, F Cho, K Chokheli, D Chou, JP Chung, K Chung, WH Chung, YS Chwalek, T Ciobanu, CI Ciocci, MA Clark, A Clark, D Compostella, G Convery, ME Conway, J Corbo, M Cordelli, M Cox, CA Cox, DJ Crescioli, F Almenar, CC Cuevas, J Culbertson, R Cully, JC Dagenhart, D Datta, M Davies, T de Barbaro, P De Cecco, S Deisher, A De Lorenzo, G Dell'Orso, M Deluca, C Demortier, L Deng, J Deninno, M d'Errico, M Di Canto, A di Giovanni, GP Di Ruzza, B Dittmann, JR D'Onofrio, M Donati, S Dong, P Dorigo, T Dube, S Ebina, K Elagin, A Erbacher, R Errede, D Errede, S Ershaidat, N Eusebi, R Fang, HC Farrington, S Fedorko, WT Feild, RG Feindt, M Fernandez, JP Ferrazza, C Field, R Flanagan, G Forrest, R Frank, MJ Franklin, M Freeman, JC Furic, I Gallinaro, M Galyardt, J Garberson, F Garcia, JE Garfinkel, AF Garosi, P Gerberich, H Gerdes, D Gessler, A Giagu, S Giakoumopoulou, V Giannetti, P Gibson, K Gimmell, JL Ginsburg, CM Giokaris, N Giordani, M Giromini, P Giunta, M Giurgiu, G Glagolev, V Glenzinski, D Gold, M Goldschmidt, N Golossanov, A Gomez, G Gomez-Ceballos, G Goncharov, M Gonzalez, O Gorelov, I Goshaw, AT Goulianos, K Gresele, A Grinstein, S Grosso-Pilcher, C Group, RC Grundler, U da Costa, JG Gunay-Unalan, Z Haber, C Hahn, SR Halkiadakis, E Han, BY Han, JY Happacher, F Hara, K Hare, D Hare, M Harr, RF Hartz, M Hatakeyama, K Hays, C Heck, M Heinrich, J Herndon, M Heuser, J Hewamanage, S Hickman, M Hidas, D Hill, CS Hirschbuehl, D Hocker, A Hou, S Houlden, M Hsu, SC Hughes, RE Hurwitz, M Husemann, U Hussein, M Huston, J Incandela, J Introzzi, G Iori, M Ivanov, A James, E Jang, D Jayatilaka, B Jeon, EJ Jha, MK Jindariani, S Johnson, W Jones, M Joo, KK Jun, SY Jung, JE Junk, TR Kamon, T Kar, D Karchin, PE Kato, Y Kephart, R Ketchum, W Keung, J Khotilovich, V Kilminster, B Kim, DH Kim, HS Kim, HW Kim, JE Kim, MJ Kim, SB Kim, SH Kim, YK Kimura, N Kirsch, L Klimenko, S Kondo, K Kong, DJ Konigsberg, J Korytov, A Kotwal, AV Kreps, M Kroll, J Krop, D Krumnack, N Kruse, M Krutelyov, V Kuhr, T Kulkarni, NP Kurata, M Kwang, S Laasanen, AT Lami, S Lammel, S Lancaster, M Lander, RL Lannon, K Lath, A Latino, G Lazzizzera, I LeCompte, T Lee, E Lee, HS Lee, JS Lee, SW Leone, S Lewis, JD Lin, CJ Linacre, J Lindgren, M Lipeles, E Lister, A Litvintsev, DO Liu, C Liu, T Lockyer, NS Loginov, A Lovas, L Lucchesi, D Lueck, J Lujan, P Lukens, P Lungu, G Lys, J Lysak, R MacQueen, D Madrak, R Maeshima, K Makhoul, K Maksimovic, P Malde, S Malik, S Manca, G Manousakis-Katsikakis, A Margaroli, F Marino, C Marino, CP Martin, A Martin, V Martinez, M Martinez-Ballarin, R Mastrandrea, P Mathis, M Mattson, ME Mazzanti, P McFarland, KS McIntyre, P McNulty, R Mehta, A Mehtala, P Menzione, A Mesropian, C Miao, T Mietlicki, D Miladinovic, N Miller, R Mills, C Milnik, M Mitra, A Mitselmakher, G Miyake, H Moed, S Moggi, N Mondragon, MN Moon, CS Moore, R Morello, MJ Morlock, J Fernandez, PM Mulmenstadt, J Mukherjee, A Muller, T Murat, P Mussini, M Nachtman, J Nagai, Y Naganoma, J Nakamura, K Nakano, I Napier, A Nett, J Neu, C Neubauer, MS Neubauer, S Nielsen, J Nodulman, L Norman, M Norniella, O Nurse, E Oakes, L Oh, SH Oh, YD Oksuzian, I Okusawa, T Orava, R Osterberg, K Griso, SP Pagliarone, C Palencia, E Papadimitriou, V Papaikonomou, A Paramanov, AA Parks, B Pashapour, S Patrick, J Pauletta, G Paulini, M Paus, C Peiffer, T Pellett, DE Penzo, A Phillips, TJ Piacentino, G Pianori, E Pinera, L Pitts, K Plager, C Pondrom, L Potamianos, K Poukhov, O Prokoshin, F Pronko, A Ptohos, F Pueschel, E Punzi, G Pursley, J Rademacker, J Rahaman, A Ramakrishnan, V Ranjan, N Redondo, I Renton, P Renz, M Rescigno, M Richter, S Rimondi, F Ristori, L Robson, A Rodrigo, T Rodriguez, T Rogers, E Rolli, S Roser, R Rossi, M Rossin, R Roy, P Ruiz, A Russ, J Rusu, V Rutherford, B Saarikko, H Safonov, A Sakumoto, WK Santi, L Sartori, L Sato, K Savoy-Navarro, A Schlabach, P Schmidt, A Schmidt, EE Schmidt, MA Schmidt, MP Schmitt, M Schwarz, T Scodellaro, L Scribano, A Scuri, F Sedov, A Seidel, S Seiya, Y Semenov, A Sexton-Kennedy, L Sforza, F Sfyrla, A Shalhout, SZ Shears, T Shepard, PF Shimojima, M Shiraishi, S Shochet, M Shon, Y Shreyber, I Simonenko, A Sinervo, P Sisakyan, A Slaughter, AJ Slaunwhite, J Sliwa, K Smith, JR Snider, FD Snihur, R Soha, A Somalwar, S Sorin, V Squillacioti, P Stanitzki, M St Denis, R Stelzer, B Stelzer-Chilton, O Stentz, D Strologas, J Strycker, GL Suh, JS Sukhanov, A Suslov, I Taffard, A Takashima, R Takeuchi, Y Tanaka, R Tang, J Tecchio, M Teng, PK Thom, J Thome, J Thompson, GA Thomson, E Tipton, P Ttito-Guzman, P Tkaczyk, S Toback, D Tokar, S Tollefson, K Tomura, T Tonelli, D Torre, S Torretta, D Totaro, P Tourneur, S Trovato, M Tsai, SY Tu, Y Turini, N Ukegawa, F Uozumi, S van Remortel, N Varganov, A Vataga, E Vazquez, F Velev, G Vellidis, C Vidal, M Vila, I Vilar, R Vogel, M Volobouev, I Volpi, G Wagner, P Wagner, RG Wagner, RL Wagner, W Wagner-Kuhr, J Wakisaka, T Wallny, R Wang, SM Warburton, A Waters, D Weinberger, M Weinelt, J Wester, WC Whitehouse, B Whiteson, D Wicklund, AB Wicklund, E Wilbur, S Williams, G Williams, HH Wilson, MG Wilson, P Winer, BL Wittich, P Wolbers, S Wolfe, C Wolfe, H Wright, T Wu, X Wurthwein, F Yagil, A Yamamoto, K Yamaoka, J Yang, UK Yang, YC Yao, WM Yeh, GP Yi, K Yoh, J Yorita, K Yoshida, T Yu, GB Yu, I Yu, SS Yun, JC Zanetti, A Zeng, Y Zhang, X Zheng, Y Zucchelli, S AF Aaltonen, T. Adelman, J. Alvarez Gonzalez, B. Amerio, S. Amidei, D. Anastassov, A. Annovi, A. Antos, J. Apollinari, G. Apresyan, A. Arisawa, T. Artikov, A. Asaadi, J. Ashmanskas, W. Attal, A. Aurisano, A. Azfar, F. Badgett, W. Barbaro-Galtieri, A. Barnes, V. E. Barnett, B. A. Barria, P. Bartos, P. Bauer, G. Beauchemin, P. -H. Bedeschi, F. Beecher, D. Behari, S. Bellettini, G. Bellinger, J. Benjamin, D. Beretvas, A. Berge, D. Bhatti, A. Binkley, M. Bisello, D. Bizjak, I. Blair, R. E. Blocker, C. Blumenfeld, B. Bocci, A. Bodek, A. Boisvert, V. Bortoletto, D. Boudreau, J. Boveia, A. Brau, B. Bridgeman, A. Brigliadori, L. Bromberg, C. Brubaker, E. Budagov, J. Budd, H. S. Budd, S. Burkett, K. Busetto, G. Bussey, P. Buzatu, A. Byrum, K. L. Cabrera, S. Calancha, C. Camarda, S. Campanelli, M. Campbell, M. Canelli, F. Canepa, A. Carls, B. Carlsmith, D. Carosi, R. Carrillo, S. Carron, S. Casal, B. Casarsa, M. Castro, A. Catastini, P. Cauz, D. Cavaliere, V. Cavalli-Sforza, M. Cerri, A. Cerrito, L. Chang, S. H. Chen, Y. C. Chertok, M. Chiarelli, G. Chlachidze, G. Chlebana, F. Cho, K. Chokheli, D. Chou, J. P. Chung, K. Chung, W. H. Chung, Y. S. Chwalek, T. Ciobanu, C. I. Ciocci, M. A. Clark, A. Clark, D. Compostella, G. Convery, M. E. Conway, J. Corbo, M. Cordelli, M. Cox, C. A. Cox, D. J. Crescioli, F. Almenar, C. Cuenca Cuevas, J. Culbertson, R. Cully, J. C. Dagenhart, D. Datta, M. Davies, T. de Barbaro, P. De Cecco, S. Deisher, A. De Lorenzo, G. Dell'Orso, M. Deluca, C. Demortier, L. Deng, J. Deninno, M. d'Errico, M. Di Canto, A. di Giovanni, G. P. Di Ruzza, B. Dittmann, J. R. D'Onofrio, M. Donati, S. Dong, P. Dorigo, T. Dube, S. Ebina, K. Elagin, A. Erbacher, R. Errede, D. Errede, S. Ershaidat, N. Eusebi, R. Fang, H. C. Farrington, S. Fedorko, W. T. Feild, R. G. Feindt, M. Fernandez, J. P. Ferrazza, C. Field, R. Flanagan, G. Forrest, R. Frank, M. J. Franklin, M. Freeman, J. C. Furic, I. Gallinaro, M. Galyardt, J. Garberson, F. Garcia, J. E. Garfinkel, A. F. Garosi, P. Gerberich, H. Gerdes, D. Gessler, A. Giagu, S. Giakoumopoulou, V. Giannetti, P. Gibson, K. Gimmell, J. L. Ginsburg, C. M. Giokaris, N. Giordani, M. Giromini, P. Giunta, M. Giurgiu, G. Glagolev, V. Glenzinski, D. Gold, M. Goldschmidt, N. Golossanov, A. Gomez, G. Gomez-Ceballos, G. Goncharov, M. Gonzalez, O. Gorelov, I. Goshaw, A. T. Goulianos, K. Gresele, A. Grinstein, S. Grosso-Pilcher, C. Group, R. C. Grundler, U. da Costa, J. Guimaraes Gunay-Unalan, Z. Haber, C. Hahn, S. R. Halkiadakis, E. Han, B. -Y. Han, J. Y. Happacher, F. Hara, K. Hare, D. Hare, M. Harr, R. F. Hartz, M. Hatakeyama, K. Hays, C. Heck, M. Heinrich, J. Herndon, M. Heuser, J. Hewamanage, S. Hickman, M. Hidas, D. Hill, C. S. Hirschbuehl, D. Hocker, A. Hou, S. Houlden, M. Hsu, S. -C. Hughes, R. E. Hurwitz, M. Husemann, U. Hussein, M. Huston, J. Incandela, J. Introzzi, G. Iori, M. Ivanov, A. James, E. Jang, D. Jayatilaka, B. Jeon, E. J. Jha, M. K. Jindariani, S. Johnson, W. Jones, M. Joo, K. K. Jun, S. Y. Jung, J. E. Junk, T. R. 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Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. Suh, J. S. Sukhanov, A. Suslov, I. Taffard, A. Takashima, R. Takeuchi, Y. Tanaka, R. Tang, J. Tecchio, M. Teng, P. K. Thom, J. Thome, J. Thompson, G. A. Thomson, E. Tipton, P. Ttito-Guzman, P. Tkaczyk, S. Toback, D. Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. Torre, S. Torretta, D. Totaro, P. Tourneur, S. Trovato, M. Tsai, S. -Y. Tu, Y. Turini, N. Ukegawa, F. Uozumi, S. van Remortel, N. Varganov, A. Vataga, E. Vazquez, F. Velev, G. Vellidis, C. Vidal, M. Vila, I. Vilar, R. Vogel, M. Volobouev, I. Volpi, G. Wagner, P. Wagner, R. G. Wagner, R. L. Wagner, W. Wagner-Kuhr, J. Wakisaka, T. Wallny, R. Wang, S. M. Warburton, A. Waters, D. Weinberger, M. Weinelt, J. Wester, W. C., III Whitehouse, B. Whiteson, D. Wicklund, A. B. Wicklund, E. Wilbur, S. Williams, G. Williams, H. H. Wilson, M. G. Wilson, P. Winer, B. L. Wittich, P. Wolbers, S. Wolfe, C. Wolfe, H. Wright, T. Wu, X. Wuerthwein, F. Yagil, A. Yamamoto, K. Yamaoka, J. Yang, U. K. Yang, Y. C. Yao, W. M. Yeh, G. P. Yi, K. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. Yu, I. Yu, S. S. Yun, J. C. Zanetti, A. Zeng, Y. Zhang, X. Zheng, Y. Zucchelli, S. TI Search for New Bottomlike Quark Pair Decays Q(Q)over-bar -> (tW +/-)((t)over-barW +/- in Same-Charge Dileption Events SO PHYSICAL REVIEW LETTERS LA English DT Article ID VIOLATION; COLLIDER; FERMILAB AB We report the most restrictive direct limits on masses of fourth- generation down- type quarks b0, and quarklike composite fermions (B or T5= 3), decaying promptly to tW -/+. We search for a significant excess of events with two same- charge leptons (e, mu), several hadronic jets, and missing transverse energy. An analysis of data from pp collisions with an integrated luminosity of 2: 7 fb = 1 collected with the CDF II detector at Fermilab yields no evidence for such a signal, setting mass limits mb0, mB > 338 GeV= c2 and mT5= 3 > 365 GeV= c2 at 95% confidence level. 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Rev. Lett. PD MAR 5 PY 2010 VL 104 IS 9 AR 091801 DI 10.1103/PhysRevLett.104.091801 PG 8 WC Physics, Multidisciplinary SC Physics GA 564XR UT WOS:000275252500010 ER PT J AU Abraham, J Abreu, P Aglietta, M Ahn, EJ Allard, D Allekotte, I Allen, J Alvarez-Muniz, J Ambrosio, M Anchordoqui, L Andringa, S Anticic, T Anzalone, A Aramo, C Arganda, E Arisaka, K Arqueros, F Asorey, H Assis, P Aublin, J Ave, M Avila, G Backer, T Badagnani, D Balzer, M Barber, KB Barbosa, AF Barroso, SLC Baughman, B Bauleo, P Beatty, JJ Becker, BR Becker, KH Belletoile, A Bellido, JA BenZvi, S Berat, C Bergmann, T Bertou, X Biermann, PL Billoir, P Blanch-Bigas, O Blanco, F Blanco, M Bleve, C Blumer, H Bohacova, M Boncioli, D Bonifazi, C Bonino, R Borodai, N Brack, J Brogueira, P Brown, WC Bruijn, R Buchholz, P Bueno, A Burton, RE Busca, NG Caballero-Mora, KS Caramete, L Caruso, R Castellina, A Catalano, O Cataldi, G Cazon, L Cester, R Chauvin, J Chiavassa, A Chinellato, JA Chou, A Chudoba, J Clay, RW Colombo, E Coluccia, MR Conceicao, R Contreras, F Cook, H Cooper, MJ Coppens, J Cordier, A Cotti, U Coutu, S Covault, CE Creusot, A Criss, A Cronin, J Curutiu, A Dagoret-Campagne, S Dallier, R Daumiller, K Dawson, BR de Almeida, RM De Domenico, M De Donato, C de Jong, SJ De la Vega, G de Mello, WJM Neto, JRTD De Mitri, I de Souza, V de Vries, KD Decerprit, G del Peral, L Deligny, O Della Selva, A Delle Fratte, C Dembinski, H Di Giulio, C Diaz, JC Castro, MLD Diep, PN Dobrigkeit, C D'Olivo, JC Dong, PN Dorofeev, A dos Anjos, JC Dova, MT D'Urso, D Dutan, I DuVernois, MA Ebr, J Engel, R Erdmann, M Escobar, CO Etchegoyen, A San Luis, PF Falcke, H Farrar, G Fauth, AC Fazzini, N Ferrero, A Fick, B Filevich, A Filipcic, A Fleck, I Fliescher, S Fracchiolla, CE Fraenkel, ED Frohlich, U Fulgione, W Gamarra, RF Gambetta, S Garcia, B Gamez, DG Garcia-Pinto, D Garrido, X Gelmini, G Gemmeke, H Ghia, PL Giaccari, U Giller, M Glass, H Goggin, LM Gold, MS Golup, G Albarracin, FG Berisso, MG Goncalves, P Gonzalez, D Gonzalez, JG Gora, D Gorgi, A Gouffon, P Gozzini, SR Grashorn, E Grebe, S Grigat, M Grillo, AF Guardincerri, Y Guarino, F Guedes, GP Hague, JD Halenka, V Hansen, P Harari, D Harmsma, S Harton, JL Haungs, A Hebbeker, T Heck, D Herve, AE Hojvat, C Holmes, VC Homola, P Horandel, JR Horneffer, A Hrabovsky, M Huege, T Hussain, M Iarlori, M Insolia, A Ionita, F Italiano, A Jiraskova, S Kadija, K Kaducak, M Kampert, KH Karova, T Kasper, P Kegl, B Keilhauer, B Keivani, A Kelley, J Kemp, E Kieckhafer, RM Klages, HO Kleifges, M Kleinfeller, J Knapik, R Knapp, J Koang, DH Krieger, A Kromer, O Kruppke-Hansen, D Kuehn, F Kuempel, D Kulbartz, K Kunka, N Kusenko, A La Rosa, G Lachaud, C Lago, BL Lautridou, P Leao, MSAB Lebrun, D Lebrun, P Lee, J de Oliveira, MAL Lemiere, A Letessier-Selvon, A Lhenry-Yvon, I Lopez, R Aguera, AL Louedec, K Bahilo, JL Lucero, A Ludwig, M Lyberis, H Maccarone, MC Macolino, C Maldera, S Mandat, D Mantsch, P Mariazzi, AG Marin, V Maris, IC Falcon, HRM Marsella, G Martello, D Bravo, OM Mathes, HJ Matthews, J Matthews, JAJ Matthiae, G Maurizio, D Mazur, PO McEwen, M Medina-Tanco, G Melissas, M Melo, D Menichetti, E Menshikov, A Meurer, C Micanovic, S Micheletti, MI Miller, W Miramonti, L Mollerach, S Monasor, M Ragaigne, DM Montanet, F Morales, B Morello, C Moreno, E Moreno, JC Morris, C Mostafa, M Mueller, S Muller, MA Mussa, R Navarra, G Navarro, JL Navas, S Necesal, P Nellen, L Nhung, PT Nierstenhoefer, N Nitz, D Nosek, D Nozka, L Nyklicek, M Oehlschlager, J Olinto, A Oliva, P Olmos-Gilbaja, VM Ortiz, M Pacheco, N Selmi-Dei, DP Palatka, M Pallotta, J Palmieri, N Parente, G Parizot, E Parlati, S Parra, A Parrisius, J Parsons, RD Pastor, S Paul, T Pavlidou, V Payet, K Pech, M Pekala, J Pelayo, R Pepe, IM Perrone, L Pesce, R Petermann, E Petrera, S Petrinca, P Petrolini, A Petrov, Y Petrovic, J Pfendner, C Piegaia, R Pierog, T Pimenta, M Pirronello, V Platino, M Ponce, VH Pontz, M Privitera, P Prouza, M Quel, EJ Rautenberg, J Ravel, O Ravignani, D Redondo, A Revenu, B Rezende, FAS Ridky, J Riggi, S Risse, M Ristori, P Riviere, C Rizi, V Robledo, C Rodriguez, G Martino, JR Rojo, JR Rodriguez-Cabo, I Rodriguez-Frias, MD Ros, G Rosado, J Rossler, T Roth, M Rouille-d'Orfeuil, B Roulet, E Rovero, AC Salamida, F Salazar, H Salina, G Sanchez, F Santander, M Santo, CE Santos, E Santos, EM Sarazin, F Sarkar, S Sato, R Scharf, N Scherini, V Schieler, H Schiffer, P Schmidt, A Schmidt, F Schmidt, T Scholten, O Schoorlemmer, H Schovancova, J Schovanek, P Schroeder, F Schulte, S Schussler, F Schuster, D Sciutto, SJ Scuderi, M Segreto, A Semikoz, D Settimo, M Shadkam, A Shellard, RC Sidelnik, I Siffert, BB Sigl, G Smialkowski, A Smida, R Snow, GR Sommers, P Sorokin, J Spinka, H Squartini, R Stasielak, J Stephan, M Strazzeri, E Stutz, A Suarez, F Suomijarvi, T Supanitsky, AD Susa, T Sutherland, MS Swain, J Szadkowski, Z Tamashiro, A Tamburro, A Tapia, A Tarutina, T Tascau, O Tcaciuc, R Tcherniakhovski, D Tegolo, D Thao, NT Thomas, D Tiffenberg, J Timmermans, C Tkaczyk, W Peixoto, CJT Tome, B Tonachini, A Travnicek, P Tridapalli, DB Tristram, G Trovato, E Tueros, M Ulrich, R Unger, M Urban, M Galicia, JFV Valino, I Valore, L van den Berg, AM Vazquez, JR Vazquez, RA Veberic, D Venters, T Verzi, V Videla, M Villasenor, L Vorobiov, S Voyvodic, L Wahlberg, H Wahrlich, P Wainberg, O Warner, D Watson, AA Westerhoff, S Whelan, BJ Wieczorek, G Wiencke, L Wilczynska, B Wilczynski, H Williams, C Winchen, T Winnick, MG Wundheiler, B Yamamoto, T Younk, P Yuan, G Yushkov, A Zas, E Zavrtanik, D Zavrtanik, M Zaw, I Zepeda, A Ziolkowski, M AF Abraham, J. Abreu, P. Aglietta, M. Ahn, E. J. Allard, D. Allekotte, I. Allen, J. Alvarez-Muniz, J. Ambrosio, M. Anchordoqui, L. Andringa, S. Anticic, T. Anzalone, A. Aramo, C. Arganda, E. Arisaka, K. Arqueros, F. Asorey, H. Assis, P. Aublin, J. Ave, M. Avila, G. Baecker, T. Badagnani, D. Balzer, M. Barber, K. B. Barbosa, A. F. Barroso, S. L. C. Baughman, B. Bauleo, P. Beatty, J. J. Becker, B. R. Becker, K. H. Belletoile, A. Bellido, J. A. BenZvi, S. Berat, C. Bergmann, T. Bertou, X. Biermann, P. L. Billoir, P. Blanch-Bigas, O. Blanco, F. Blanco, M. Bleve, C. Bluemer, H. Bohacova, M. Boncioli, D. Bonifazi, C. Bonino, R. Borodai, N. Brack, J. Brogueira, P. Brown, W. C. Bruijn, R. Buchholz, P. Bueno, A. Burton, R. E. Busca, N. G. Caballero-Mora, K. S. Caramete, L. Caruso, R. Castellina, A. Catalano, O. Cataldi, G. Cazon, L. Cester, R. Chauvin, J. Chiavassa, A. Chinellato, J. A. Chou, A. Chudoba, J. Clay, R. W. Colombo, E. Coluccia, M. R. Conceicao, R. Contreras, F. Cook, H. Cooper, M. J. Coppens, J. Cordier, A. Cotti, U. Coutu, S. Covault, C. E. Creusot, A. Criss, A. Cronin, J. Curutiu, A. Dagoret-Campagne, S. Dallier, R. Daumiller, K. Dawson, B. R. de Almeida, R. M. De Domenico, M. De Donato, C. de Jong, S. J. De la Vega, G. de Mello Junior, W. J. M. de Mello Neto, J. R. T. De Mitri, I. de Souza, V. de Vries, K. D. Decerprit, G. del Peral, L. Deligny, O. Della Selva, A. Delle Fratte, C. Dembinski, H. Di Giulio, C. Diaz, J. C. Diaz Castro, M. L. Diep, P. N. Dobrigkeit, C. D'Olivo, J. C. Dong, P. N. Dorofeev, A. dos Anjos, J. C. Dova, M. T. D'Urso, D. Dutan, I. DuVernois, M. A. Ebr, J. Engel, R. Erdmann, M. Escobar, C. O. Etchegoyen, A. Facal San Luis, P. Falcke, H. Farrar, G. Fauth, A. C. Fazzini, N. Ferrero, A. Fick, B. Filevich, A. Filipcic, A. Fleck, I. Fliescher, S. Fracchiolla, C. E. Fraenkel, E. D. Froehlich, U. Fulgione, W. Gamarra, R. F. Gambetta, S. Garcia, B. Garcia Gamez, D. Garcia-Pinto, D. Garrido, X. Gelmini, G. Gemmeke, H. Ghia, P. L. Giaccari, U. Giller, M. Glass, H. Goggin, L. M. Gold, M. S. Golup, G. Gomez Albarracin, F. Gomez Berisso, M. Goncalves, P. Gonzalez, D. Gonzalez, J. G. Gora, D. Gorgi, A. Gouffon, P. Gozzini, S. R. Grashorn, E. Grebe, S. Grigat, M. Grillo, A. F. Guardincerri, Y. Guarino, F. Guedes, G. P. Hague, J. D. Halenka, V. Hansen, P. Harari, D. Harmsma, S. Harton, J. L. Haungs, A. Hebbeker, T. Heck, D. Herve, A. E. Hojvat, C. Holmes, V. C. Homola, P. Horandel, J. R. Horneffer, A. Hrabovsky, M. Huege, T. Hussain, M. Iarlori, M. Insolia, A. Ionita, F. Italiano, A. Jiraskova, S. Kadija, K. Kaducak, M. Kampert, K. H. Karova, T. Kasper, P. Kegl, B. Keilhauer, B. Keivani, A. Kelley, J. Kemp, E. Kieckhafer, R. M. Klages, H. O. Kleifges, M. Kleinfeller, J. Knapik, R. Knapp, J. Koang, D. -H. Krieger, A. Kroemer, O. Kruppke-Hansen, D. Kuehn, F. Kuempel, D. Kulbartz, K. Kunka, N. Kusenko, A. La Rosa, G. Lachaud, C. Lago, B. L. Lautridou, P. Leao, M. S. A. B. Lebrun, D. Lebrun, P. Lee, J. Leigui de Oliveira, M. A. Lemiere, A. Letessier-Selvon, A. Lhenry-Yvon, I. Lopez, R. Lopez Agueera, A. Louedec, K. Lozano Bahilo, J. Lucero, A. Ludwig, M. Lyberis, H. Maccarone, M. C. Macolino, C. Maldera, S. Mandat, D. Mantsch, P. Mariazzi, A. G. Marin, V. Maris, I. C. Marquez Falcon, H. R. Marsella, G. Martello, D. Martinez Bravo, O. Mathes, H. J. Matthews, J. Matthews, J. A. J. Matthiae, G. Maurizio, D. Mazur, P. O. McEwen, M. Medina-Tanco, G. Melissas, M. Melo, D. Menichetti, E. Menshikov, A. Meurer, C. Micanovic, S. Micheletti, M. I. Miller, W. Miramonti, L. Mollerach, S. Monasor, M. Ragaigne, D. Monnier Montanet, F. Morales, B. Morello, C. Moreno, E. Moreno, J. C. Morris, C. Mostafa, M. Mueller, S. Muller, M. A. Mussa, R. Navarra, G. Navarro, J. L. Navas, S. Necesal, P. Nellen, L. Nhung, P. T. Nierstenhoefer, N. Nitz, D. Nosek, D. Nozka, L. Nyklicek, M. Oehlschlaeger, J. Olinto, A. Oliva, P. Olmos-Gilbaja, V. M. Ortiz, M. Pacheco, N. Pakk Selmi-Dei, D. Palatka, M. Pallotta, J. Palmieri, N. Parente, G. Parizot, E. Parlati, S. Parra, A. Parrisius, J. Parsons, R. D. Pastor, S. Paul, T. Pavlidou, V. Payet, K. Pech, M. Pekala, J. Pelayo, R. Pepe, I. M. Perrone, L. Pesce, R. Petermann, E. Petrera, S. Petrinca, P. Petrolini, A. Petrov, Y. Petrovic, J. Pfendner, C. Piegaia, R. Pierog, T. Pimenta, M. Pirronello, V. Platino, M. Ponce, V. H. Pontz, M. Privitera, P. Prouza, M. Quel, E. J. Rautenberg, J. Ravel, O. Ravignani, D. Redondo, A. Revenu, B. Rezende, F. A. S. Ridky, J. Riggi, S. Risse, M. Ristori, P. Riviere, C. Rizi, V. Robledo, C. Rodriguez, G. Rodriguez Martino, J. Rodriguez Rojo, J. Rodriguez-Cabo, I. Rodriguez-Frias, M. D. Ros, G. Rosado, J. Rossler, T. Roth, M. Rouille-d'Orfeuil, B. Roulet, E. Rovero, A. C. Salamida, F. Salazar, H. Salina, G. Sanchez, F. Santander, M. Santo, C. E. Santos, E. Santos, E. M. Sarazin, F. Sarkar, S. Sato, R. Scharf, N. Scherini, V. Schieler, H. Schiffer, P. Schmidt, A. Schmidt, F. Schmidt, T. Scholten, O. Schoorlemmer, H. Schovancova, J. Schovanek, P. Schroeder, F. Schulte, S. Schuessler, F. Schuster, D. Sciutto, S. J. Scuderi, M. Segreto, A. Semikoz, D. Settimo, M. Shadkam, A. Shellard, R. C. Sidelnik, I. Siffert, B. B. Sigl, G. Smialkowski, A. Smida, R. Snow, G. R. Sommers, P. Sorokin, J. Spinka, H. Squartini, R. Stasielak, J. Stephan, M. Strazzeri, E. Stutz, A. Suarez, F. Suomijarvi, T. Supanitsky, A. D. Susa, T. Sutherland, M. S. Swain, J. Szadkowski, Z. Tamashiro, A. Tamburro, A. Tapia, A. Tarutina, T. Tascau, O. Tcaciuc, R. Tcherniakhovski, D. Tegolo, D. Thao, N. T. Thomas, D. Tiffenberg, J. Timmermans, C. Tkaczyk, W. Todero Peixoto, C. J. Tome, B. Tonachini, A. Travnicek, P. Tridapalli, D. B. Tristram, G. Trovato, E. Tueros, M. Ulrich, R. Unger, M. Urban, M. Valdes Galicia, J. F. Valino, I. Valore, L. van den Berg, A. M. Vazquez, J. R. Vazquez, R. A. Veberic, D. Venters, T. Verzi, V. Videla, M. Villasenor, L. Vorobiov, S. Voyvodic, L. Wahlberg, H. Wahrlich, P. Wainberg, O. Warner, D. Watson, A. A. Westerhoff, S. Whelan, B. J. Wieczorek, G. Wiencke, L. Wilczynska, B. Wilczynski, H. Williams, C. Winchen, T. Winnick, M. G. Wundheiler, B. Yamamoto, T. Younk, P. Yuan, G. Yushkov, A. Zas, E. Zavrtanik, D. Zavrtanik, M. Zaw, I. Zepeda, A. Ziolkowski, M. TI Measurement of the Depth of Maximum of Extensive Air Showers above 10(18) eV SO PHYSICAL REVIEW LETTERS LA English DT Article ID COSMIC-RAYS; FLUORESCENCE LIGHT; DETECTOR; RECONSTRUCTION; RESOLUTION; SPECTRUM AB We describe the measurement of the depth of maximum, X-max, of the longitudinal development of air showers induced by cosmic rays. Almost 4000 events above 10(18) eV observed by the fluorescence detector of the Pierre Auger Observatory in coincidence with at least one surface detector station are selected for the analysis. The average shower maximum was found to evolve with energy at a rate of (106 +/- 35-21) g/cm(2)/decade below 10(18.24) +/- (0.05) eV, and d24 +/- 3 g/cm(2)/ecade above this energy. The measured shower-to-shower fluctuations decrease from about 55 to 26 g/cm(2). The interpretation of these results in terms of the cosmic ray mass composition is briefly discussed. C1 [Abraham, J.; De la Vega, G.; Garcia, B.; Videla, M.] Natl Technol Univ, Fac Mendoza, CONICET, CNEA, Mendoza, Argentina. [Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Santos, E.; Tome, B.] LIP, P-1000 Lisbon, Portugal. [Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Santos, E.; Tome, B.] Inst Super Tecn, Lisbon, Portugal. [Aglietta, M.; Bonino, R.; Castellina, A.; Chiavassa, A.; Fulgione, W.; Ghia, P. L.; Gorgi, A.; Lucero, A.; Maldera, S.; Morello, C.; Navarra, G.] Univ Turin, Ist Fis Spazio Interplanetario INAF, Turin, Italy. [Aglietta, M.; Bonino, R.; Castellina, A.; Cester, R.; Chiavassa, A.; Fulgione, W.; Ghia, P. L.; Gorgi, A.; Lucero, A.; Maldera, S.; Maurizio, D.; Melo, D.; Menichetti, E.; Morello, C.; Mussa, R.; Navarra, G.; Tonachini, A.] Sezione Ist Nazl Fis Nucl, Turin, Italy. [Ahn, E. J.; Chou, A.; Fazzini, N.; Glass, H.; Hojvat, C.; Kaducak, M.; Kasper, P.; Kuehn, F.; Lebrun, P.; Mantsch, P.; Mazur, P. O.; Spinka, H.; Voyvodic, L.] Fermilab Natl Accelerator Lab, Batavia, IL USA. [Allard, D.; Busca, N. G.; Decerprit, G.; Lachaud, C.; Parizot, E.; Rouille-d'Orfeuil, B.; Semikoz, D.; Tristram, G.] Univ Paris 07, CNRS, Lab AstroParticule & Cosmol APC, IN2P3, Paris, France. [Allekotte, I.; Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Ponce, V. H.; Roulet, E.] Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina. [Allekotte, I.; Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Ponce, V. H.; Roulet, E.] Consejo Nacl Invest Cient & Tecn, CNEA UNCuyo, Inst Balseiro, San Carlos De Bariloche, Rio Negro, Argentina. [Allen, J.; Chou, A.; Farrar, G.; Zaw, I.] NYU, New York, NY USA. [Alvarez-Muniz, J.; Facal San Luis, P.; Lopez Agueera, A.; Olmos-Gilbaja, V. M.; Parente, G.; Parra, A.; Pelayo, R.; Rodriguez, G.; Rodriguez-Cabo, I.; Vazquez, R. A.; Zas, E.] Univ Santiago de Compostela, Santiago De Compostela, Spain. [Ambrosio, M.; Aramo, C.; Della Selva, A.; D'Urso, D.; Guarino, F.; Valore, L.; Yushkov, A.] Univ Naples Federico 2, Naples, Italy. [Ambrosio, M.; Aramo, C.; Della Selva, A.; D'Urso, D.; Guarino, F.; Valore, L.; Yushkov, A.] Sezione Ist Nazl Fis Nucl, Naples, Italy. [Anchordoqui, L.; Goggin, L. M.] Univ Wisconsin, Milwaukee, WI 53201 USA. [Anticic, T.; Kadija, K.; Micanovic, S.; Susa, T.] Rudjer Boskovic Inst, Zagreb 10000, Croatia. [Anzalone, A.; Catalano, O.; La Rosa, G.; Maccarone, M. C.; Segreto, A.; Strazzeri, E.] Ist Astrofis Spaziale & Fis Cosm Palermo INAF, Palermo, Italy. [Arganda, E.; Arqueros, F.; Blanco, F.; Garcia-Pinto, D.; Monasor, M.; Ortiz, M.; Rosado, J.; Vazquez, J. 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[Avila, G.; Contreras, F.; Rodriguez Martino, J.; Rodriguez Rojo, J.; Santander, M.; Sato, R.; Squartini, R.] Pierre Auger So Observ, Malargue, Argentina. [Avila, G.] Comis Nacl Energia Atom, Malargue, Argentina. [Baecker, T.; Buchholz, P.; Fleck, I.; Froehlich, U.; Pontz, M.; Risse, M.; Tcaciuc, R.; Ziolkowski, M.] Univ Siegen, Siegen, Germany. [Badagnani, D.; Dova, M. T.; Gomez Albarracin, F.; Hansen, P.; Mariazzi, A. G.; Moreno, J. C.; Sciutto, S. J.; Tarutina, T.; Tueros, M.; Wahlberg, H.] Univ Nacl La Plata, IFLP, La Plata, Buenos Aires, Argentina. [Badagnani, D.; Dova, M. T.; Gomez Albarracin, F.; Hansen, P.; Mariazzi, A. G.; Moreno, J. C.; Sciutto, S. J.; Tarutina, T.; Tueros, M.; Wahlberg, H.] Consejo Nacl Invest Cient & Tecn, La Plata, Buenos Aires, Argentina. [Balzer, M.; Bergmann, T.; Gemmeke, H.; Kleifges, M.; Kroemer, O.; Kunka, N.; Menshikov, A.; Schmidt, A.; Tcherniakhovski, D.] Inst Prozessdatenverarbeitung & Elekt, Karlsruhe Inst Technol, Karlsruhe, Germany. [Barber, K. B.; Bellido, J. A.; Clay, R. W.; Cooper, M. J.; Dawson, B. R.; Herve, A. E.; Holmes, V. C.; Sorokin, J.; Wahrlich, P.; Whelan, B. J.; Winnick, M. G.] Univ Adelaide, Adelaide, SA, Australia. [Barbosa, A. F.; dos Anjos, J. C.; Rezende, F. A. S.; Shellard, R. C.] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil. [Barroso, S. L. C.] Univ Estadual Sudoeste Bahia, Vitoria Da Conquista, BA, Brazil. [Baughman, B.; Beatty, J. J.; Grashorn, E.; Morris, C.; Sutherland, M. S.] Ohio State Univ, Columbus, OH 43210 USA. [Bauleo, P.; Brack, J.; Dorofeev, A.; Fracchiolla, C. E.; Harton, J. L.; Knapik, R.; Mostafa, M.; Petrov, Y.; Thomas, D.; Warner, D.; Younk, P.] Colorado State Univ, Ft Collins, CO 80523 USA. [Becker, B. R.; Gold, M. S.; Hague, J. D.; Matthews, J. A. J.; Miller, W.] Univ New Mexico, Albuquerque, NM 87131 USA. [Becker, K. H.; Kampert, K. H.; Kruppke-Hansen, D.; Kuempel, D.; Nierstenhoefer, N.; Oliva, P.; Rautenberg, J.; Risse, M.; Scherini, V.; Szadkowski, Z.; Tascau, O.] Berg Univ Wuppertal, Wuppertal, Germany. [Belletoile, A.; Berat, C.; Chauvin, J.; Koang, D. -H.; Lebrun, D.; Montanet, F.; Payet, K.; Riviere, C.; Stutz, A.] Univ Grenoble 1, CNRS, INPG, LPSC,IN2P3, Grenoble, France. [BenZvi, S.; Pfendner, C.; Westerhoff, S.] Univ Wisconsin, Madison, WI USA. [Biermann, P. L.; Caramete, L.; Curutiu, A.; Dutan, I.] Max Planck Inst Radioastron, D-5300 Bonn, Germany. [Blanco, M.; del Peral, L.; McEwen, M.; Pacheco, N.; Redondo, A.; Rodriguez-Frias, M. D.; Ros, G.] Univ Alcala de Henares, Madrid, Spain. [Bleve, C.; Cataldi, G.; Coluccia, M. R.; De Mitri, I.; Giaccari, U.; Martello, D.; Settimo, M.] Univ Salento, Dipartimento Fis, Lecce, Italy. [Bleve, C.; Cataldi, G.; Coluccia, M. R.; De Mitri, I.; Giaccari, U.; Marsella, G.; Martello, D.; Perrone, L.; Settimo, M.] Sezione Ist Nazl Fis Nucl, Lecce, Italy. [Bluemer, H.; Caballero-Mora, K. S.; Gonzalez, D.; Gora, D.; Ludwig, M.; Maris, I. C.; Melissas, M.; Palmieri, N.; Parrisius, J.; Schmidt, T.; Tamburro, A.] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe Inst Technol, D-7500 Karlsruhe, Germany. [Bohacova, M.; Chudoba, J.; Ebr, J.; Hrabovsky, M.; Karova, T.; Mandat, D.; Necesal, P.; Nozka, L.; Nyklicek, M.; Palatka, M.; Pech, M.; Prouza, M.; Ridky, J.; Schovancova, J.; Schovanek, P.; Smida, R.; Travnicek, P.] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic. [Boncioli, D.; Delle Fratte, C.; Di Giulio, C.; Matthiae, G.; Petrinca, P.; Rodriguez, G.; Salina, G.; Verzi, V.] Univ Roma Tor Vergata, Rome, Italy. [Boncioli, D.; Delle Fratte, C.; Di Giulio, C.; Matthiae, G.; Petrinca, P.; Rodriguez, G.; Salina, G.; Verzi, V.] Sezione Ist Nazl Fis Nucl, Rome, Italy. [Borodai, N.; Gora, D.; Homola, P.; Pekala, J.; Stasielak, J.; Wilczynska, B.; Wilczynski, H.] Inst Nucl Phys PAN, Krakow, Poland. [Brown, W. C.] Colorado State Univ, Pueblo, CO USA. [Bruijn, R.; Cook, H.; Gozzini, S. R.; Knapp, J.; Parsons, R. D.; Watson, A. A.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] Univ Granada, Granada, Spain. [Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] CAFPE, Granada, Spain. [Burton, R. E.; Covault, C. E.] Case Western Reserve Univ, Cleveland, OH 44106 USA. [Caruso, R.; De Domenico, M.; Insolia, A.; Italiano, A.; Pirronello, V.; Riggi, S.; Rodriguez Martino, J.; Scuderi, M.; Tegolo, D.; Trovato, E.] Univ Catania, Catania, Italy. [Caruso, R.; De Domenico, M.; Insolia, A.; Italiano, A.; Pirronello, V.; Riggi, S.; Rodriguez Martino, J.; Scuderi, M.; Tegolo, D.; Trovato, E.] Sezione Ist Nazl Fis Nucl, Catania, Italy. [Chinellato, J. A.; de Almeida, R. M.; de Mello Junior, W. J. M.; Dobrigkeit, C.; Escobar, C. O.; Fauth, A. 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[Coutu, S.; Criss, A.; Sommers, P.; Ulrich, R.] Penn State Univ, University Pk, PA 16802 USA. [Dallier, R.; Lautridou, P.; Marin, V.; Ravel, O.; Revenu, B.] IN2P3, CNRS, SUBATECH, Nantes, France. [De Donato, C.; D'Olivo, J. C.; Medina-Tanco, G.; Morales, B.; Nellen, L.; Sanchez, F.; Supanitsky, A. D.; Valdes Galicia, J. F.] Univ Nacl Autonoma Mexico, Mexico City 04510, DF, Mexico. [De Donato, C.; Miramonti, L.] Univ Milan, Milan, Italy. [De Donato, C.; Miramonti, L.] Sezione Ist Nazl Fis Nucl, Milan, Italy. [de Mello Neto, J. R. T.; Lago, B. L.; Santos, E. M.; Siffert, B. B.] Univ Fed Rio de Janeiro, Inst Fis, Rio De Janeiro, Brazil. [de Souza, V.] Univ Sao Paulo, Inst Fis, Sao Carlos, SP, Brazil. [de Vries, K. D.; Fraenkel, E. D.; Harmsma, S.; Scholten, O.; van den Berg, A. M.] Univ Groningen, Kernfys Versneller Inst, Groningen, Netherlands. [Deligny, O.; Dong, P. N.; Ghia, P. L.; Lemiere, A.; Lhenry-Yvon, I.; Lyberis, H.; Suomijarvi, T.] Univ Paris 11, CNRS, IN2P3, IPNO, F-91405 Orsay, France. [Dembinski, H.; Erdmann, M.; Fliescher, S.; Grigat, M.; Hebbeker, T.; Meurer, C.; Scharf, N.; Schiffer, P.; Schulte, S.; Stephan, M.; Winchen, T.] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany. [Diaz, J. C.; Fick, B.; Kieckhafer, R. M.; Nitz, D.] Michigan Technol Univ, Houghton, MI 49931 USA. [Diaz Castro, M. L.; Shellard, R. C.] Pontificia Univ Catolica Rio de Janeiro, Rio De Janeiro, Brazil. [Diep, P. N.; Dong, P. N.; Nhung, P. T.; Thao, N. T.] Inst Nucl Sci & Technol, Hanoi, Vietnam. [DuVernois, M. A.] Univ Hawaii, Honolulu, HI 96822 USA. [Falcke, H.] ASTRON, Dwingeloo, Netherlands. [Filipcic, A.; Veberic, D.; Zavrtanik, D.; Zavrtanik, M.] J Stefan Inst, Ljubljana, Slovenia. [Gambetta, S.; Pesce, R.; Petrolini, A.] Univ Genoa, Dipartimento Fis, Genoa, Italy. [Gambetta, S.; Pesce, R.; Petrolini, A.] Ist Nazl Fis Nucl, I-16146 Genoa, Italy. [Giller, M.; Smialkowski, A.; Szadkowski, Z.; Tkaczyk, W.; Wieczorek, G.] Univ Lodz, PL-90131 Lodz, Poland. [Gonzalez, J. G.; Keivani, A.; Matthews, J.; Scherini, V.; Shadkam, A.; Yuan, G.] Louisiana State Univ, Baton Rouge, LA 70803 USA. [Gouffon, P.; Tridapalli, D. B.] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil. [Grillo, A. F.; Parlati, S.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Laquila, Italy. [Guardincerri, Y.; Piegaia, R.; Tiffenberg, J.] Univ Buenos Aires, FCEyN, Dept Fis, RA-1053 Buenos Aires, DF, Argentina. [Halenka, V.; Hrabovsky, M.; Iarlori, M.; Rossler, T.] Palacky Univ, CR-77147 Olomouc, Czech Republic. [Macolino, C.; Petrera, S.; Rizi, V.; Salamida, F.] Univ Aquila, I-67100 Laquila, Italy. [Kulbartz, K.; Sigl, G.] Univ Hamburg, Hamburg, Germany. [Leao, M. S. A. B.; Leigui de Oliveira, M. A.; Todero Peixoto, C. J.] Univ Fed ABC, Santo Andre, SP, Brazil. [Lopez, R.; Martinez Bravo, O.; Moreno, E.; Robledo, C.; Salazar, H.] Benemerita Univ Autonoma Puebla, Puebla, Mexico. [Marsella, G.; Perrone, L.] Univ Salento, Dipartimento Ingn Innovaz, Lecce, Italy. [Matthews, J.] So Univ, Baton Rouge, LA USA. [Nosek, D.] Charles Univ Prague, Fac Math & Phys, Inst Particle & Nucl Phys, Prague, Czech Republic. [Pastor, S.] Univ Valencia, CSIC, Inst Fis Corpuscular, Valencia, Spain. [Paul, T.; Swain, J.] Northeastern Univ, Boston, MA 02115 USA. [Pavlidou, V.] CALTECH, Pasadena, CA 91125 USA. [Pepe, I. M.] Univ Fed Bahia, Salvador, BA, Brazil. [Petermann, E.; Snow, G. R.] Univ Nebraska, Lincoln, NE USA. [Rovero, A. C.; Tamashiro, A.] Consejo Nacl Invest Cient & Tecn, Inst Astron & Fis Espacio, RA-1033 Buenos Aires, DF, Argentina. [Salazar, H.] Inst Nacl Astrofis Opt & Electr, Puebla, Mexico. [Sarazin, F.; Schuster, D.; Wiencke, L.] Colorado Sch Mines, Golden, CO 80401 USA. [Sarkar, S.] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford, England. [Spinka, H.] Argonne Natl Lab, Argonne, IL 60439 USA. [Tegolo, D.] Univ Palermo, Catania, Italy. [Yamamoto, T.] Konan Univ, Kobe, Hyogo, Japan. [Yamamoto, T.] Konan Univ, Kobe, Hyogo, Japan. [Zepeda, A.] CINVESTAV, IPN, Mexico City 14000, DF, Mexico. RP Abraham, J (reprint author), Natl Technol Univ, Fac Mendoza, CONICET, CNEA, Mendoza, Argentina. 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Ridky, Jan/0000-0001-6697-1393; Garcia Pinto, Diego/0000-0003-1348-6735; Tome, Bernardo/0000-0002-7564-8392; Espirito Santo, Maria Catarina/0000-0003-1286-7288; Schussler, Fabian/0000-0003-1500-6571; Goncalves, Patricia /0000-0003-2042-3759; Prouza, Michael/0000-0002-3238-9597; Shellard, Ronald/0000-0002-2983-1815; Petrolini, Alessandro/0000-0003-0222-7594; D'Urso, Domenico/0000-0002-8215-4542; Brogueira, Pedro/0000-0001-6069-4073; Chinellato, Jose Augusto/0000-0002-3240-6270; Falcke, Heino/0000-0002-2526-6724; Ebr, Jan/0000-0001-8807-6162; Fauth, Anderson/0000-0001-7239-0288; Todero Peixoto, Carlos Jose/0000-0003-3669-8212; Chinellato, Carola Dobrigkeit /0000-0002-1236-0789; Rodriguez Fernandez, Gonzalo/0000-0002-4683-230X; Del Peral, Luis/0000-0003-2580-5668; Coutu, Stephane/0000-0003-2923-2246; Mussa, Roberto/0000-0002-0294-9071; Ulrich, Ralf/0000-0002-2535-402X; Garcia, Beatriz/0000-0003-0919-2734; Dembinski, Hans/0000-0003-3337-3850; Petrera, Sergio/0000-0002-6029-1255; Bonino, Raffaella/0000-0002-4264-1215; Rizi, Vincenzo/0000-0002-5277-6527; Anzalone, Anna/0000-0003-1849-198X; Segreto, Alberto/0000-0001-7341-6603; Knapp, Johannes/0000-0003-1519-1383; La Rosa, Giovanni/0000-0002-3931-2269; Asorey, Hernan/0000-0002-4559-8785; Andringa, Sofia/0000-0002-6397-9207; Aramo, Carla/0000-0002-8412-3846; Kothandan, Divay/0000-0001-9048-7518; Castellina, Antonella/0000-0002-0045-2467; maldera, simone/0000-0002-0698-4421; Matthews, James/0000-0002-1832-4420; Yuan, Guofeng/0000-0002-1907-8815; de Jong, Sijbrand/0000-0002-3120-3367; Salamida, Francesco/0000-0002-9306-8447; Catalano, Osvaldo/0000-0002-9554-4128; Ravignani, Diego/0000-0001-7410-8522; Cataldi, Gabriella/0000-0001-8066-7718; Aglietta, Marco/0000-0001-8354-5388; Maccarone, Maria Concetta/0000-0001-8722-0361; De Mitri, Ivan/0000-0002-8665-1730; Nosek, Dalibor/0000-0001-6219-200X; Marsella, Giovanni/0000-0002-3152-8874; Sigl, Guenter/0000-0002-4396-645X; Navarro Quirante, Jose Luis/0000-0002-9915-1735; Mantsch, Paul/0000-0002-8382-7745; Gomez Berisso, Mariano/0000-0001-5530-0180; Navas, Sergio/0000-0003-1688-5758; Assis, Pedro/0000-0001-7765-3606; Arqueros, Fernando/0000-0002-4930-9282; Blanco, Francisco/0000-0003-4332-434X; Conceicao, Ruben/0000-0003-4945-5340; Beatty, James/0000-0003-0481-4952; Guarino, Fausto/0000-0003-1427-9885; Rodriguez Frias, Maria /0000-0002-2550-4462; Oliva, Pietro/0000-0002-3572-3255; Insolia, Antonio/0000-0002-9040-1566; de Mello Neto, Joao/0000-0002-3234-6634; Fulgione, Walter/0000-0002-2388-3809; Lozano-Bahilo, Julio/0000-0003-0613-140X; scuderi, mario/0000-0001-9026-5317; zas, enrique/0000-0002-4430-8117; Sarkar, Subir/0000-0002-3542-858X; Moura Santos, Edivaldo/0000-0002-2818-8813; Gouffon, Philippe/0000-0001-7511-4115; de Almeida, Rogerio/0000-0003-3104-2724; De Domenico, Manlio/0000-0001-5158-8594; Abreu, Pedro/0000-0002-9973-7314 NR 40 TC 319 Z9 320 U1 7 U2 90 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 5 PY 2010 VL 104 IS 9 AR 091101 DI 10.1103/PhysRevLett.104.091101 PG 7 WC Physics, Multidisciplinary SC Physics GA 564XR UT WOS:000275252500006 PM 20366976 ER PT J AU Nakhmanson, SM Naumov, I AF Nakhmanson, S. M. Naumov, Ivan TI Goldstone-like States in a Layered Perovskite with Frustrated Polarization: A First-Principles Investigation of PbSr2Ti2O7 SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHASE-TRANSITIONS; ALPHA-PBO; ORIGIN; PIEZOELECTRICITY; MECHANISM; CD2RE2O7; ORDER AB With the help of first-principles-based computational techniques, we demonstrate that Goldstone-like states can be artificially induced in a layered-perovskite ferroelectric compound with frustrated polarization, resulting in the emergence of a variety of interesting physical properties that include large, tunable dielectric constants and an ability to easily form vortex polar states in a nanodot geometry. In a similar fashion to the well-known perovskite materials with morphotropic phase boundaries (MPBs), these states manifest themselves as polarization rotations with almost no energy penalty, suggesting that the existence of an MPB is actually yet another manifestation of the Goldstone theorem in solids. C1 [Nakhmanson, S. M.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Naumov, Ivan] Hewlett Packard Informat & Quantum Syst Lab, Palo Alto, CA 94304 USA. RP Nakhmanson, SM (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Nakhmanson, Serge/A-6329-2014 FU U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX This project was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02-06CH11357. S.M.N. is grateful to Brian Stephenson and Ram Seshadri for fruitful discussions. NR 31 TC 18 Z9 18 U1 0 U2 10 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 5 PY 2010 VL 104 IS 9 AR 097601 DI 10.1103/PhysRevLett.104.097601 PG 4 WC Physics, Multidisciplinary SC Physics GA 564XR UT WOS:000275252500040 PM 20367010 ER PT J AU Raman, R Mueller, D Nelson, BA Jarboe, TR Gerhardt, S Kugel, HW LeBlanc, B Maingi, R Menard, J Ono, M Paul, S Roquemore, L Sabbagh, S Soukhanovskii, V AF Raman, R. Mueller, D. Nelson, B. A. Jarboe, T. R. Gerhardt, S. Kugel, H. W. LeBlanc, B. Maingi, R. Menard, J. Ono, M. Paul, S. Roquemore, L. Sabbagh, S. Soukhanovskii, V. CA NSTX Res Team TI Demonstration of Tokamak Ohmic Flux Saving by Transient Coaxial Helicity Injection in the National Spherical Torus Experiment SO PHYSICAL REVIEW LETTERS LA English DT Article ID SUSTAINMENT; SPHEROMAK AB Transient coaxial helicity injection (CHI) started discharges in the National Spherical Torus Experiment (NSTX) have attained peak currents up to 300 kA and when coupled to induction, it has produced up to 200 kA additional current over inductive-only operation. CHI in NSTX has shown to be energetically quite efficient, producing a plasma current of about 10 A/J of capacitor bank energy. In addition, for the first time, the CHI-produced toroidal current that couples to induction continues to increase with the energy supplied by the CHI power supply at otherwise similar values of the injector flux, indicating the potential for substantial current generation capability by CHI in NSTX and in future toroidal devices. C1 [Raman, R.; Nelson, B. A.; Jarboe, T. R.] Univ Washington, Seattle, WA 98195 USA. [Mueller, D.; Gerhardt, S.; Kugel, H. W.; LeBlanc, B.; Menard, J.; Ono, M.; Paul, S.; Roquemore, L.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Maingi, R.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Sabbagh, S.] Columbia Univ, New York, NY USA. [Soukhanovskii, V.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Raman, R (reprint author), Univ Washington, Seattle, WA 98195 USA. EM raman@aa.washington.edu RI Sabbagh, Steven/C-7142-2011; OI Menard, Jonathan/0000-0003-1292-3286 FU US DOE [FG03-96ER5436, DE-FG03-99ER54519, DE-AC02-09CH11466, DEAC52-07NA27344.] FX n We acknowledge the NSTX team for machine operations and diagnostics support. This work is supported by US DOE Contracts No. FG03-96ER5436, No. DE-FG03-99ER54519, No. DE-AC02-09CH11466 and No. DEAC52-07NA27344. NR 13 TC 31 Z9 31 U1 2 U2 9 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD MAR 5 PY 2010 VL 104 IS 9 AR 095003 DI 10.1103/PhysRevLett.104.095003 PG 4 WC Physics, Multidisciplinary SC Physics GA 564XR UT WOS:000275252500021 PM 20366991 ER PT J AU Glenzer, SH MacGowan, BJ Michel, P Meezan, NB Suter, LJ Dixit, SN Kline, JL Kyrala, GA Bradley, DK Callahan, DA Dewald, EL Divol, L Dzenitis, E Edwards, MJ Hamza, AV Haynam, CA Hinkel, DE Kalantar, DH Kilkenny, JD Landen, OL Lindl, JD LePape, S Moody, JD Nikroo, A Parham, T Schneider, MB Town, RPJ Wegner, P Widmann, K Whitman, P Young, BKF Van Wonterghem, B Atherton, LJ Moses, EI AF Glenzer, S. H. MacGowan, B. J. Michel, P. Meezan, N. B. Suter, L. J. Dixit, S. N. Kline, J. L. Kyrala, G. A. Bradley, D. K. Callahan, D. A. Dewald, E. L. Divol, L. Dzenitis, E. Edwards, M. J. Hamza, A. V. Haynam, C. A. Hinkel, D. E. Kalantar, D. H. Kilkenny, J. D. Landen, O. L. Lindl, J. D. LePape, S. Moody, J. D. Nikroo, A. Parham, T. Schneider, M. B. Town, R. P. J. Wegner, P. Widmann, K. Whitman, P. Young, B. K. F. Van Wonterghem, B. Atherton, L. J. Moses, E. I. TI Symmetric Inertial Confinement Fusion Implosions at Ultra-High Laser Energies SO SCIENCE LA English DT Article ID NATIONAL-IGNITION-FACILITY; HOHLRAUM PLASMAS; BEAMS; PERFORMANCE AB Indirect-drive hohlraum experiments at the National Ignition Facility have demonstrated symmetric capsule implosions at unprecedented laser drive energies of 0.7 megajoule. One hundred and ninety-two simultaneously fired laser beams heat ignition-emulate hohlraums to radiation temperatures of 3.3 million kelvin, compressing 1.8-millimeter-diameter capsules by the soft x-rays produced by the hohlraum. Self-generated plasma optics gratings on either end of the hohlraum tune the laser power distribution in the hohlraum, which produces a symmetric x-ray drive as inferred from the shape of the capsule self-emission. These experiments indicate that the conditions are suitable for compressing deuterium-tritium-filled capsules, with the goal of achieving burning fusion plasmas and energy gain in the laboratory. C1 [Glenzer, S. H.; MacGowan, B. J.; Michel, P.; Meezan, N. B.; Suter, L. J.; Dixit, S. N.; Bradley, D. K.; Callahan, D. A.; Dewald, E. L.; Divol, L.; Dzenitis, E.; Edwards, M. J.; Hamza, A. V.; Haynam, C. A.; Hinkel, D. E.; Kalantar, D. H.; Landen, O. L.; Lindl, J. D.; LePape, S.; Moody, J. D.; Parham, T.; Schneider, M. B.; Town, R. P. J.; Wegner, P.; Widmann, K.; Whitman, P.; Young, B. K. F.; Van Wonterghem, B.; Atherton, L. J.; Moses, E. I.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Kline, J. L.; Kyrala, G. A.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Kilkenny, J. D.; Nikroo, A.] Gen Atom Co, San Diego, CA 92121 USA. RP Glenzer, SH (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. EM glenzer1@llnl.gov RI Michel, Pierre/J-9947-2012; OI Kline, John/0000-0002-2271-9919 FU U. S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344] FX This work was performed under the auspices of the U. S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. NR 31 TC 167 Z9 174 U1 9 U2 58 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 5 PY 2010 VL 327 IS 5970 BP 1228 EP 1231 DI 10.1126/science.1185634 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 563VD UT WOS:000275162100031 PM 20110465 ER PT J AU Li, CK Seguin, FH Frenje, JA Rosenberg, M Petrasso, RD Amendt, PA Koch, JA Landen, OL Park, HS Robey, HF Town, RPJ Casner, A Philippe, F Betti, R Knauer, JP Meyerhofer, DD Back, CA Kilkenny, JD Nikroo, A AF Li, C. K. Seguin, F. H. Frenje, J. A. Rosenberg, M. Petrasso, R. D. Amendt, P. A. Koch, J. A. Landen, O. L. Park, H. S. Robey, H. F. Town, R. P. J. Casner, A. Philippe, F. Betti, R. Knauer, J. P. Meyerhofer, D. D. Back, C. A. Kilkenny, J. D. Nikroo, A. TI Charged-Particle Probing of X-ray-Driven Inertial-Fusion Implosions SO SCIENCE LA English DT Article ID PLASMAS; MATTER AB Measurements of x-ray-driven implosions with charged particles have resulted in the quantitative characterization of critical aspects of indirect-drive inertial fusion. Three types of spontaneous electric fields differing in strength by two orders of magnitude, the largest being nearly one-tenth of the Bohr field, were discovered with time-gated proton radiographic imaging and spectrally resolved proton self-emission. The views of the spatial structure and temporal evolution of both the laser drive in a hohlraum and implosion properties provide essential insight into, and modeling validation of, x-ray-driven implosions. C1 [Li, C. K.; Seguin, F. H.; Frenje, J. A.; Rosenberg, M.; Petrasso, R. D.] MIT, Plasma Sci & Fus Ctr, Cambridge, MA 02139 USA. [Amendt, P. A.; Koch, J. A.; Landen, O. L.; Park, H. S.; Robey, H. F.; Town, R. P. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Casner, A.; Philippe, F.] CEA, DAM, DIF, F-91297 Arpajon, France. [Betti, R.; Knauer, J. P.; Meyerhofer, D. D.] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA. [Back, C. A.; Kilkenny, J. D.; Nikroo, A.] Gen Atom Co, San Diego, CA 92186 USA. RP Li, CK (reprint author), MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA. EM ckli@mit.edu RI CASNER, Alexis/B-7458-2014 OI CASNER, Alexis/0000-0003-2176-1389 FU U.S. Department of Energy; Laboratory for Laser Energetics (LLE) National Laser User's Facility [DE-FG52-07NA28059, DE-FG03-03SF22691]; Lawrence Livermore National Laboratory [B543881, LDRD-ER-898988]; CEA/DIF (France) [DE-FC52-08NA28302]; LLE [414090-G]; Fusion Science Center at University of Rochester [412761-G]; General Atomics [DE-AC52-06NA27279] FX This work was supported in part by the U.S. Department of Energy and the Laboratory for Laser Energetics (LLE) National Laser User's Facility (DE-FG52-07NA28059 and DE-FG03-03SF22691), Lawrence Livermore National Laboratory (B543881 and LDRD-ER-898988), CEA/DIF (France, Cooperative agreement DE-FC52-08NA28302), LLE (414090-G), Fusion Science Center at University of Rochester (412761-G), and General Atomics (DE-AC52-06NA27279). NR 23 TC 54 Z9 55 U1 1 U2 18 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 5 PY 2010 VL 327 IS 5970 BP 1231 EP 1235 DI 10.1126/science.1185747 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 563VD UT WOS:000275162100032 PM 20110464 ER PT J AU Zhou, FF Chen, HL Xu, Y AF Zhou, Fengfeng Chen, Huiling Xu, Ying TI GASdb: a large-scale and comparative exploration database of glycosyl hydrolysis systems SO BMC MICROBIOLOGY LA English DT Article ID SP STRAIN JDR-2; CLOSTRIDIUM-THERMOCELLUM; ESCHERICHIA-COLI; BINDING MODULE; CELL-ADHESION; GENE; CELLULOSOMES; EXPRESSION; PREDICTION; MULTIDOMAIN AB Background: The genomes of numerous cellulolytic organisms have been recently sequenced or in the pipeline of being sequenced. Analyses of these genomes as well as the recently sequenced metagenomes in a systematic manner could possibly lead to discoveries of novel biomass-degradation systems in nature. Description: We have identified 4,679 and 49,099 free acting glycosyl hydrolases with or without carbohydrate binding domains, respectively, by scanning through all the proteins in the UniProt Knowledgebase and the JGI Metagenome database. Cellulosome components were observed only in bacterial genomes, and 166 cellulosome-dependent glycosyl hydrolases were identified. We observed, from our analysis data, unexpected wide distributions of two less well-studied bacterial glycosyl hydrolysis systems in which glycosyl hydrolases may bind to the cell surface directly rather than through linking to surface anchoring proteins, or cellulosome complexes may bind to the cell surface by novel mechanisms other than the other used SLH domains. In addition, we found that animal-gut metagenomes are substantially enriched with novel glycosyl hydrolases. Conclusions: The identified biomass degradation systems through our large-scale search are organized into an easy-to-use database GASdb at http://csbl.bmb.uga.edu/similar to ffzhou/GASdb/, which should be useful to both experimental and computational biofuel researchers. C1 [Zhou, Fengfeng; Chen, Huiling; Xu, Ying] Univ Georgia, Computat Syst Biol Lab, Dept Biochem & Mol Biol, Athens, GA 30602 USA. [Zhou, Fengfeng; Chen, Huiling; Xu, Ying] Univ Georgia, Inst Bioinformat, Athens, GA 30602 USA. [Zhou, Fengfeng; Xu, Ying] BioEnergy Sci Ctr, Oak Ridge, TN 37831 USA. RP Xu, Y (reprint author), Univ Georgia, Computat Syst Biol Lab, Dept Biochem & Mol Biol, Athens, GA 30602 USA. EM xyn@bmb.uga.edu RI Zhou, Fengfeng/A-8932-2008 OI Zhou, Fengfeng/0000-0002-8108-6007 FU Office of Biological and Environmental Research in the DOE Office of Science; National Science Foundation [DBI-0354771, ITR-IIS-0407204, DBI-0542119, CCF0621700]; National Institutes of Health [1R01GM075331, 1R01GM081682]; Georgia Cancer Coalition FX This work is supported in part by the grant for the BioEnergy Science Center, which is a U.S. Department of Energy BioEnergy Research Center supported by the Office of Biological and Environmental Research in the DOE Office of Science, the National Science Foundation (DBI-0354771, ITR-IIS-0407204, DBI-0542119, CCF0621700), National Institutes of Health (1R01GM075331 and 1R01GM081682) and a Distinguished Scholar grant from the Georgia Cancer Coalition. We'd like to thank Dr Yanbin Yin for his helpful discussions. NR 47 TC 4 Z9 4 U1 0 U2 6 PU BIOMED CENTRAL LTD PI LONDON PA 236 GRAYS INN RD, FLOOR 6, LONDON WC1X 8HL, ENGLAND SN 1471-2180 J9 BMC MICROBIOL JI BMC Microbiol. PD MAR 4 PY 2010 VL 10 AR 69 DI 10.1186/1471-2180-10-69 PG 9 WC Microbiology SC Microbiology GA 570BI UT WOS:000275646200001 PM 20202206 ER PT J AU Yuhasz, WM Schlagel, DL Xing, Q McCallum, RW Lograsso, TA AF Yuhasz, W. M. Schlagel, D. L. Xing, Q. McCallum, R. W. Lograsso, T. A. TI Metastability of ferromagnetic Ni-Mn-Sn Heusler alloys SO JOURNAL OF ALLOYS AND COMPOUNDS LA English DT Article DE Ni-Mn-Sn alloy; Heusler alloy; Annealing; Phase decomposition; Magnetocaloric; Magnetization ID SHAPE-MEMORY ALLOYS; MAGNETIC-PROPERTIES; PHASE-TRANSFORMATION; GA AB We previously showed that extended 4-week anneals at 1223 K were required to achieve structural and chemical homogeneity in the off-stoichiometric Ni-Mn-Sn Heusler alloy solid solution. To insure that the transition from the high temperature B2 to the room temperature L2(1) phase was complete, we performed low temperature (773 K) anneals, similar to 150 K below the reported B2 -> L2(1) transition temperature, on the 1223 K homogenized samples. Drastic changes in the magnetization measurements of the annealed samples suggested that the intermediate compositions of the L2(1) phase were metastable. TEM and XRD analyses confirmed the decomposition of the single-phase Heusler alloys into two phases with compositions close to Ni(54)Mn(45)Sn(1) and Ni(50)Mn(35)Sn(20). The observed phase decomposition indicated that the off-stoichiometric Ni-Mn-Sn Heusler alloys, that feature martensitic transformations, are metastable at 773 K. (c) 2009 Elsevier B.V. All rights reserved. C1 [Yuhasz, W. M.; Schlagel, D. L.; Xing, Q.; McCallum, R. W.; Lograsso, T. A.] Ames Lab, Div Mat Sci & Engn, Ames, IA 50011 USA. RP Yuhasz, WM (reprint author), Ames Lab, Div Mat Sci & Engn, Ames, IA 50011 USA. EM yuhasz@ameslab.gov FU Iowa State University [DE-AC02-07CH11358] FX The research was performed at Ames Laboratory. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358. NR 31 TC 13 Z9 15 U1 4 U2 35 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0925-8388 J9 J ALLOY COMPD JI J. Alloy. Compd. PD MAR 4 PY 2010 VL 492 IS 1-2 BP 681 EP 684 DI 10.1016/j.jallcom.2009.12.016 PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA 574UH UT WOS:000276018900144 ER PT J AU Feldman, U Brown, CM Seely, JF Dammasch, IE Landi, E Doschek, GA Colgan, J Abdallah, J Fontes, CJ Sherrill, ME AF Feldman, U. Brown, C. M. Seely, J. F. Dammasch, I. E. Landi, E. Doschek, G. A. Colgan, J. Abdallah, J., Jr. Fontes, C. J. Sherrill, M. E. TI A new approach for deriving the solar irradiance from nonflaring solar upper atmosphere plasmas at 2 x 10(4) <= T <= 2 x 10(7) K SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID ULTRAVIOLET IMAGING SPECTROMETER; POLAR CORONAL HOLE; ATOMIC DATABASE; EMISSION-LINES; EUV IRRADIANCE; REFERENCE SPECTRUM; THERMAL STRUCTURE; QUIET SUN; CHIANTI; MODEL AB We propose a new approach for deriving the solar irradiance due to the emission by solar upper atmosphere plasmas at 2 x 10(4) <= T <= 2 x 10(7) K for wavelengths shorter than 800 angstrom. Our approach is based on a new understanding of the properties of the solar upper atmosphere; specifically, the discovery that the majority of emission from the nonflaring solar upper transition region and corona in the temperature range 3 x 10(5) <= T <= 3 x 10(6) K arises from isothermal plasmas that have four distinct temperatures: 0.35, 0.9, 1.4, and 3 x 10(6) K. Although the lower transition region (2 x 10(4) <= T <= 2 x 10(5) K) of coronal holes, quiet regions or active regions, is multithermal and variable in brightness, the shape of emission measure versus temperature curves in this region is almost constant. At any given time, flaring plasmas are for the most part isothermal, although their emission measure and temperature continuously change. In this paper we review these recent results and propose a set of simple spectrometers for recording the solar spectrum in several narrow bands. The solar emission measure, average plasma temperature, and composition can be derived using the measured line fluxes. By combining the emission measure and other plasma properties with the output of a suite of atomic physics codes, which are also described here, the solar irradiance at wavelengths shorter than 800 angstrom can be calculated. C1 [Feldman, U.; Brown, C. M.; Seely, J. F.; Landi, E.; Doschek, G. A.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. [Colgan, J.; Abdallah, J., Jr.; Fontes, C. J.; Sherrill, M. E.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Feldman, U.; Landi, E.] Artep Inc, Ellicott City, MD USA. [Dammasch, I. E.] Observ Royal Belgique, Solar Influences Data Anal Ctr, B-1180 Brussels, Belgium. RP Feldman, U (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. EM enrico.landi@nrl.navy.mil RI Landi, Enrico/H-4493-2011 FU NASA [NNG06EA14I, NNH06CD24C] FX The work of E. L. is supported by NNG06EA14I, NNH06CD24C, and other NASA grants. NR 48 TC 6 Z9 6 U1 1 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0148-0227 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD MAR 4 PY 2010 VL 115 AR A03101 DI 10.1029/2008JA013926 PG 22 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 565UT UT WOS:000275321000001 ER PT J AU Tarver, CM AF Tarver, Craig M. TI Corner Turning and Shock Desensitization Experiments plus Numerical Modeling of Detonation Waves in the Triaminotrinitrobenzene Based Explosive LX-17 SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID SOLID EXPLOSIVES; REACTION ZONES; IGNITION AB Five new experiments ire reported that tested both detonation wave corner turning and shock desensitization properties of the triaminotrinitrobenzene (TATB) based plastic bonded explosive (PBX) LX-17. These experiments used small pentaerythritol tetranitrate (PETN) charges to initiate hemispherical Ultrafine TATB (UF TATB) boosters, which then initiated LX-17 hemispherical detonations. The UF TATB boosters were placed under steel shadow plates embedded in the LX-17 cylindrical charges, which were covered by thin aluminum plates. The LX-17 detonation waves propagated Outward until they reached the aluminum plates, which were instrumented with photonic Doppler velocimetry probes to measure their axial free surface velocities. X-ray radiographs and framing camera images were taken at Various times. The LX-17 detonations propagated around the two corners of the steel shadow plates and into thin LX-17 layers placed between the steel and the top aluminum plates. The detonation waves were met there by weak diverging shocks that propagated through the steel plates and imparted 1-2 GPa pressures to these unreacted LX-17 layers. These weak shock waves compressed and desensitized the unreacted LX-17, resulting in failures of the LX-17 detonation waves. The hydrodynamics of double corner turning and shock desensitization in the five experiments were modeled in two dimensions using the Ignition and Growth LX-17 detonation reactive flow model. The calculated arrival times and axial free surface velocity histories of the top aluminum plates were in excellent agreement with the experimental measurements. C1 Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94551 USA. RP Tarver, CM (reprint author), Lawrence Livermore Natl Lab, Energet Mat Ctr, Livermore, CA 94551 USA. FU United States Department of Energy [DE-AC52-07NA2734] FX The author thanks Mark Hari, who envisioned, designed, and analyzed these experiments;36,37 Ted Strand, who made the PDV velocimetry measurements; the bunker crew who fired the experiments; and David Hare, who did many preliminary reactive flow calculations and determined the detonator function times. This work was performed under the auspices of the United States Department of Energy by the Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA2734, NR 37 TC 20 Z9 23 U1 3 U2 20 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 4 PY 2010 VL 114 IS 8 BP 2727 EP 2736 DI 10.1021/jp9098733 PG 10 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 559QV UT WOS:000274842200001 PM 20141191 ER PT J AU Lawler, KV Small, DW Head-Gordon, M AF Lawler, Keith V. Small, David W. Head-Gordon, Martin TI Orbitals That Are Unrestricted in Active Pairs for Generalized Valence Bond Coupled Cluster Methods SO JOURNAL OF PHYSICAL CHEMISTRY A LA English DT Article ID MOLECULAR EQUILIBRIUM STRUCTURES; WAVE-FUNCTIONS; AB-INITIO; MODEL; ENERGIES; ATOMS; IMPLEMENTATION; APPROXIMATION; CHEMISTRY; FIELD AB Spin unrestriction is typically defined as a free variation of the molecular orbitals of different spins in order to lower the molecular energy. When applied to approximate active space electron correlation methods, such as generalized valence bond coupled cluster (GVB-CC) models, this approach often leads to Undesirable artifacts. We therefore present an alternative Unrestricted in active pairs (UAP) procedure for spin polarization in GVB-CC methods, which resembles the corresponding orbitals of unrestricted Hartree-Fock theory. The UAP procedure permits spin polarization only within the two orbital subspaces describing each electron pair (consisting of one nominally occupied and one virtual orbital). This great reduction to just a linear number of degrees of freedom associated with spin polarization eliminates many of the undesirable artifacts associated with unconstrained spin unrestriction. The UAP procedure is tested on a variety of potential curves for bond breaking and the properties of small radicals its well as larger polyenyl radicals, allyl, pentadienyl, and heptatrienyl. C1 [Head-Gordon, Martin] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA. RP Head-Gordon, M (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM mhg@bastille.cchem.berkeley.edu FU Department of Energy; U.S. Department of Energy [DE-AC02-05CH11231] FX This work was supported by the Department of Energy through a grant under the program for scientific discovery through advanced computing (SciDAC). This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 46 TC 8 Z9 8 U1 2 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1089-5639 J9 J PHYS CHEM A JI J. Phys. Chem. A PD MAR 4 PY 2010 VL 114 IS 8 BP 2930 EP 2938 DI 10.1021/jp911009f PG 9 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA 559QV UT WOS:000274842200023 PM 20141227 ER PT J AU Yu, K Hu, MZ Waing, RB Le Piolet, M Frotey, M Zaman, MB Wu, XH Leek, DM Tao, Y Wilkinson, D Li, CS AF Yu, Kui Hu, Michael Z. Waing, Ruibing Le Piolet, Mickael Frotey, Marion Zaman, Md Badrur Wu, Xiaohua Leek, Donald M. Tao, Ye Wilkinson, Diana Li, Chunsheng TI Thermodynamic Equilibrium-Driven Formation of Single-Sized Nanocrystals: Reaction Media Tuning CdSe Magic-Sized versus Regular Quantum Dots SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID ONE-POT SYNTHESIS; STRONG BANDGAP PHOTOLUMINESCENCE; TRI-N-OCTYLPHOSPHINE; SEMICONDUCTOR NANOCRYSTALS; HIGH-QUALITY; SOLAR-CELLS; II-VI; MONODISPERSE NANOCRYSTALS; EXTINCTION COEFFICIENT; CDTE NANOCRYSTALS AB A concept for the fundamental science of nanoparticle synthesis, thermodynamic equilibrium-driven formation of colloidal single-sired nanoparticle ensembles, is proposed and demonstrated in this manuscript, which addresses the controlled formation of CdSe magic-sized and regular quantum dots (MSQDs and RQDs). During formation, the former are magic-sired nuclei without further growth in size, while the latter experience nucleation and growth. Both MSQDs and RQDs exhibit bandgap emission, while the former have homogeneous spectra broadening only and the latter both homogeneous and inhomogeneous spectra broadening. The former are single-sired and the latter have size distribution. With continuous and homogeneous nucleation, the thermodynamically driven formation of MSQDs was realized via our one-pot noninjection approach, which features highly synthetic reproducibility and large-scale capability. With the proper tuning of the synthetic parameters, such as the nature of the reaction medium, that affect the thermodynamic equilibria, various CdSe MSQDs and RQDs were synthesized discriminately under otherwise identical synthetic formulation and reaction conditions: the reaction media were noncoordinating 1-octadecene, coordinating trioctylphosphine, and mixtures of the two. The nature of Cd precursors, affected also by the reaction media, plays a major role in the formation of MSQDs versus RQDs. The present investigation on the thermodynamically driven formation of CdSe single-sized nanoparticles via tuning of the reaction medium, mainly, brings novel insights into the formation mechanism and into the surface ligands of the resulting colloidal nanocrystals. More importantly, the present study provides novel experimental design and approaches to single-sized nanoparticles desired for various applications. C1 [Yu, Kui; Waing, Ruibing; Le Piolet, Mickael; Frotey, Marion; Zaman, Md Badrur; Leek, Donald M.] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada. [Wu, Xiaohua; Tao, Ye] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada. [Hu, Michael Z.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Wilkinson, Diana] Def Res & Dev Canada, Ottawa, ON K1A 0Z4, Canada. [Li, Chunsheng] Hlth Canada, Healthy Environm & Consumer Safety Branch, Ottawa, ON K1A 1C1, Canada. RP Yu, K (reprint author), Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada. EM kui.yu@nrc-cnrc.gc.ca RI ye, bin/K-7828-2012; 牛, 开心/C-3081-2014; Wang, Ruibing/J-9460-2015; OI Wang, Ruibing/0000-0001-9489-4241; Hu, Michael/0000-0001-8461-9684 FU Laboratory Directed Research and Development Program; Oak Ridge National Laboratory FX The authors acknowledge gratefully Professor Moungi Bawendi for useful discussion oil CdSe nanoclusters. Also, the authors thank Dr. Jianying Ouyang and Dr. Alexander Voznyy for helpful discussions oil the experimental design and morphological explanation of the nanocrystals synthesized, and the authors give thanks to the NRC-Nano Initiative and the NRC-Taiwan program. Dr. Michael Z. Hu is partially supported by the Laboratory Directed Research and Development Program and SEED Money project of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. NR 94 TC 51 Z9 51 U1 2 U2 40 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1932-7447 J9 J PHYS CHEM C JI J. Phys. Chem. C PD MAR 4 PY 2010 VL 114 IS 8 BP 3329 EP 3339 DI 10.1021/jp909310a PG 11 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 559RA UT WOS:000274842700001 ER PT J AU Barrio, L Estrella, M Zhou, G Wen, W Hanson, JC Hungria, AB Hornes, A Fernandez-Garcia, M Martinez-Arias, A Rodriguez, JA AF Barrio, Laura Estrella, Michael Zhou, Gong Wen, Wen Hanson, Jonathan C. Hungria, Ana B. Hornes, Aitor Fernandez-Garcia, Marcos Martinez-Arias, Arturo Rodriguez, Jose A. TI Unraveling the Active Site in Copper-Ceria Systems for the Water-Gas Shift Reaction: In Situ Characterization of an Inverse Powder CeO2-x/CuO-Cu Catalyst SO JOURNAL OF PHYSICAL CHEMISTRY C LA English DT Article ID FUEL-CELL APPLICATIONS; MECHANISM; METAL; NANOPARTICLES; SURFACE; KINETICS; AU; CU; DIFFRACTION; EXCHANGE AB An inverse powder system composed of CeO2 nanoparticles dispersed over a CuO-Cu matrix is proposed as a novel catalyst for the water-gas shift reaction. This inverse CeO2/CuO-Cu catalyst exhibits a higher activity than standard Cu/CeO2 catalysts. In situ synchrotron characterization techniques were employed to follow the Structural changes of CeO2/CuO-Cu under reaction conditions. Time-resolved X-ray diffraction experiments showed the transformation of CuO to metallic Cu via a Cu2O intermediate. Short-order structural changes were followed by pair distribution function analysis and corroborated the results obtained by diffraction. Moreover, X-ray absorption spectroscopy also revealed oxidation state changes from Cu2+ to Cu-0 and the partial reduction of CeOx nanoparticles. The activity data obtained by mass spectrometry revealed that hydrogen production starts once the copper has been fully reduced. The strong interaction of ceria and copper boosted the catalytic performance of the sample. The inverse catalyst was active at low temperatures, stable to several reaction runs and to redox cycles. These characteristics are highly valuable for mobile fuel cell applications. The active phases of the inverse CeO2/CuO-Cu catalyst are partially reduced ceria nanoparticles strongly interacting with metallic copper. The nature and Structure of the ceria nanoparticles are of critical importance because they are involved in processes related to water dissociation over the catalyst surface. C1 [Barrio, Laura; Estrella, Michael; Zhou, Gong; Wen, Wen; Hanson, Jonathan C.; Rodriguez, Jose A.] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. [Hungria, Ana B.] Univ Cadiz, Fac Ciencias, Dept Ciencia Mat Ingn Met & Quim Inorgan, Cadiz 11510, Spain. [Hornes, Aitor; Fernandez-Garcia, Marcos; Martinez-Arias, Arturo] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain. RP Rodriguez, JA (reprint author), Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA. EM rodrigez@bnl.gov RI Estrella, Michael/G-3188-2010; Barrio, Laura/A-9509-2008; Zhou, Gong/C-7085-2009; Fernandez-Garcia, Marcos/A-8122-2014; Hungria, Ana/I-8739-2014; Hornes, Aitor/B-2281-2009; Hanson, jonathan/E-3517-2010 OI Barrio, Laura/0000-0003-3496-4329; Hungria, Ana/0000-0002-4622-6967; Hornes, Aitor/0000-0002-0970-4595; FU U.S. Department of Energy (DOE); Chemical Sciences Division [DE-AC02-98CH 10086]; FP7 People program [IOF-219674]; Comunidad de Madrid [S-0505/ENE/000304]; MICINN [CTQ2006-15600/BQU, CTQ2009-14527/BQU] FX N. Marinkovic and S. Khalid are gratefully acknowledged for their help carrying out the XANES experiments. The work at BNL was financed by the U.S. Department of Energy (DOE), Chemical Sciences Division (DE-AC02-98CH 10086). The National Synchrotron Light source is supported by the Divisions of Materials and Chemical Sciences of the U.S.-DOE. L.B. acknowledges funding by the FP7 People program under the project Marie Curie IOF-219674. A.H. thanks the MICINN for a FPU grant under which his contribution to this work was made. Work at ICP-CSIC and U.C. was financed by Comunidad de Madrid (ENERCAM S-0505/ENE/000304) and MICINN (CTQ2006-15600/BQU and CTQ2009-14527/BQU) projects to whom we are grateful. NR 52 TC 48 Z9 51 U1 7 U2 67 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1932-7447 J9 J PHYS CHEM C JI J. Phys. Chem. C PD MAR 4 PY 2010 VL 114 IS 8 BP 3580 EP 3587 DI 10.1021/jp910342b PG 8 WC Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 559RA UT WOS:000274842700036 ER PT J AU Kharitonov, MY Efetov, KB AF Kharitonov, Maxim Yu Efetov, Konstantin B. TI Excitonic condensation in a double-layer graphene system SO SEMICONDUCTOR SCIENCE AND TECHNOLOGY LA English DT Article ID BOSE-EINSTEIN CONDENSATION; DOUBLE-QUANTUM WELLS; LONG-RANGE ORDER; SUPERCONDUCTIVITY; PHASE; IMPURITIES; INSULATOR; BILAYER; GAS AB The possibility of excitonic condensation in a recently proposed electrically biased double-layer graphene system is studied theoretically. The main emphasis is put on obtaining a reliable analytical estimate for the transition temperature into the excitonic state. As in a double-layer graphene system the total number of fermionic 'flavors' is equal to N = 8 due to two projections of spin, two valleys and two layers, the large-N approximation appears to be especially suitable for theoretical investigation of the system. On the other hand, the large number of flavors makes screening of the bare Coulomb interactions very efficient, which, together with the suppression of backscattering in graphene, leads to an extremely low energy of the excitonic condensation. It is shown that the effect of screening on the excitonic pairing is just as strong in the excitonic state as it is in the normal state. As a result, the value of the excitonic gap Delta is found to be in full agreement with the previously obtained estimate for the mean-field transition temperature T-c, the maximum possible value Delta(max), T-c(max) similar to 10(-7)epsilon(F) (epsilon(F) is the Fermi energy) of both being in a 1mK range for a perfectly clean system. This proves that the energy scale similar to 10(-7)epsilon(F) really sets the upper bound for the transition temperature and invalidates the recently expressed conjecture about the high-temperature first-order transition into the excitonic state. These findings suggest that, unfortunately, the excitonic condensation in graphene double-layers can hardly be realized experimentally. C1 [Kharitonov, Maxim Yu] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Kharitonov, Maxim Yu; Efetov, Konstantin B.] Ruhr Univ Bochum, Inst Theoret Phys 3, D-44780 Bochum, Germany. RP Kharitonov, MY (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RI Efetov, Konstantin/H-8852-2013 NR 54 TC 33 Z9 33 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0268-1242 J9 SEMICOND SCI TECH JI Semicond. Sci. Technol. PD MAR 4 PY 2010 VL 25 IS 3 AR 034004 DI 10.1088/0268-1242/25/3/034004 PG 11 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA 552UE UT WOS:000274318300009 ER PT J AU Smith, HL Hickey, J Jablin, MS Trujillo, A Freyer, JP Majewski, J AF Smith, Hillary L. Hickey, Joseph Jablin, Michael S. Trujillo, Antoinette Freyer, James P. Majewski, Jaroslaw TI Mouse Fibroblast Cell Adhesion Studied by Neutron Reflectometry SO BIOPHYSICAL JOURNAL LA English DT Article ID INTERNAL-REFLECTION FLUORESCENCE; INTERFERENCE-CONTRAST MICROSCOPY; MODEL BIOLOGICAL MEMBRANE; LEAST-SQUARES METHODS; SUBSTRATE CONTACTS; X-RAY; SILICON; SURFACE; TOPOGRAPHY; INTERFACES AB Neutron reflectometry (NR) was used to examine live mouse fibroblast cells adherent on a quartz substrate in a deuterated phosphate-buffered saline environment at room temperature. These measurements represent the first, to our knowledge, successful visualization and quantization of the interface between live cells and a substrate with subnanometer resolution using NR. NR data, attributable to the adhesion of live cells, were observed and compared with data from pure growth medium. Independently of surface cell density, the average distance between the center of the cell membrane region and the quartz substrate was determined to be similar to 180 angstrom. The membrane region (similar to 80 angstrom thick) contains the membranes of cells that are inhomogeneously distributed or undulating, likely conforming to the nonplanar geometry of the supporting adherence proteins. A second region of cell membranes at a greater distance from the substrate was not detectable by NR due to the resolution limits of the technique employed. Attachment of the live cell samples was confirmed by interaction with both distilled water and trypsin. Distinct changes in the NR data after exposure indicate the removal of cells from the substrate. C1 [Smith, Hillary L.; Jablin, Michael S.; Majewski, Jaroslaw] Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. [Hickey, Joseph; Trujillo, Antoinette; Freyer, James P.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. RP Majewski, J (reprint author), Los Alamos Natl Lab, Manuel Lujan Jr Neutron Scattering Ctr, Los Alamos, NM 87545 USA. EM jarek@lanl.gov RI Lujan Center, LANL/G-4896-2012 FU Department of Energy Office of Basic Energy Sciences and Los Alamos National Laboratory under Department of Energy [DE-AC52-06NA25396]; National Cancer Institute [CA108853]; National Institutes of Health FX This work benefited from the use of the Lujan Neutron Scattering Center. Los Alamos National Laboratory Neutron Science Center, funded by the Department of Energy Office of Basic Energy Sciences and Los Alamos National Laboratory under Department of Energy contract DE-AC52-06NA25396. The work was also supported by grant CA108853 from the National Cancer Institute, National Institutes of Health. NR 31 TC 10 Z9 10 U1 0 U2 5 PU CELL PRESS PI CAMBRIDGE PA 600 TECHNOLOGY SQUARE, 5TH FLOOR, CAMBRIDGE, MA 02139 USA SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD MAR 3 PY 2010 VL 98 IS 5 BP 793 EP 799 DI 10.1016/j.bpj.2009.11.019 PG 7 WC Biophysics SC Biophysics GA 564QV UT WOS:000275232100006 PM 20197032 ER PT J AU Zhang, YW Ishimaru, M Jagielski, J Zhang, WM Zhu, ZH Saraf, LV Jiang, WL Thome, L Weber, WJ AF Zhang, Yanwen Ishimaru, Manabu Jagielski, Jacek Zhang, Weiming Zhu, Zihua Saraf, Laxmikant V. Jiang, Weilin Thome, Lionel Weber, William J. TI Damage and microstructure evolution in GaN under Au ion irradiation SO JOURNAL OF PHYSICS D-APPLIED PHYSICS LA English DT Article ID IMPLANTED GAN AB Damage and microstructure evolution in gallium nitride (GaN) under Au(+) ion irradiation has been investigated using complementary electron microscopy, secondary ion mass spectrometry and ion-beam analysis techniques. Epitaxially-grown GaN layers (2 mu m thick) have been irradiated by 2.0 MeV Au ions to 1.0 x 10(15) and 1.4 x 10(15) cm(-2) at 155 K and to 7.3 x 10(15) cm(-2) at 200 K. The irradiation-induced damage has been analysed by Rutherford backscattering spectroscopy in a channelling direction (RBS/C). For a better determination of the ion-induced disorder profile, an iterative procedure and a Monte Carlo code (McChasy) are combined to analyse the ion channelling spectra. With increasing irradiation dose, separated amorphous layers develop from the sample surface and near the damage peak region. Formation of large nitrogen bubbles with sizes up to 70 nm is observed in the buried amorphous layer, while the surface layer contains small bubbles with a diameter of a few nanometres due to significant nitrogen loss from the surface. Volume expansion from 3% to 25% in the irradiated region is suggested by cross-sectional transmission electron microscope and RBS/C measurement. The anomalous shape of the Au distributions under three irradiations indicates out-diffusion of Au towards the sample surface. The results from the complementary techniques suggest that nitrogen is retained in the damaged GaN where the crystallinity is preserved. Once the amorphous state is reached in the surface region, GaN starts to decompose and nitrogen escapes from the surface. Furthermore, experimental results show considerable errors in both the disorder profile and the ion range predicted by the Stopping and Range of Ions in Matter code, indicating a significant overestimation of electronic stopping powers of Au ions in GaN. C1 [Zhang, Yanwen; Zhang, Weiming; Zhu, Zihua; Saraf, Laxmikant V.; Jiang, Weilin; Weber, William J.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Ishimaru, Manabu] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan. [Jagielski, Jacek] Inst Elect Mat Technol, PL-01919 Warsaw, Poland. [Jagielski, Jacek] Andrzej Soltan Inst Nucl Studies, PL-05400 Otwock, Poland. [Zhang, Weiming] Peking Univ, Inst Heavy Ion Phys, Beijing 100871, Peoples R China. [Thome, Lionel] Univ Paris 11, CNRS, IN2P3,UMR 8609, Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France. RP Zhang, YW (reprint author), Pacific NW Natl Lab, POB 999 MS K8-87, Richland, WA 99352 USA. EM Yanwen.Zhang@pnl.gov RI Weber, William/A-4177-2008; Zhu, Zihua/K-7652-2012; OI Weber, William/0000-0002-9017-7365; Jiang, Weilin/0000-0001-8302-8313 FU Office of Basic Energy Sciences, US Department of Energy [DE-AC05-76RL01830] FX This work was supported by the Division of Materials Science and Engineering, Office of Basic Energy Sciences, US Department of Energy. A portion of the research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research located at the Pacific Northwest National Laboratory (PNNL). PNNL is operated by Battelle for the US Department of Energy under Contract No DE-AC05-76RL01830. NR 35 TC 23 Z9 23 U1 1 U2 16 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0022-3727 J9 J PHYS D APPL PHYS JI J. Phys. D-Appl. Phys. PD MAR 3 PY 2010 VL 43 IS 8 AR 085303 DI 10.1088/0022-3727/43/8/085303 PG 9 WC Physics, Applied SC Physics GA 554BW UT WOS:000274411500012 ER PT J AU Zou, GF Wang, HY Mara, N Luo, HM Li, N Di, ZF Bauer, E Wang, YQ McCleskey, T Burrell, A Zhang, XH Nastasi, M Jia, Q AF Zou, Guifu Wang, Haiyan Mara, Nathan Luo, Hongmei Li, Nan Di, Zengfeng Bauer, Eve Wang, Yongqiang McCleskey, Thomas Burrell, Anthony Zhang, Xinghang Nastasi, Michael Jia, Quanxi TI Chemical Solution Deposition of Epitaxial Carbide Films SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID THIN-FILMS; VAPOR-DEPOSITION; TITANIUM CARBIDE; TIC FILMS AB Carbide films exhibit many unique properties. The development of a versatile and simple technique for the deposition of carbide films will enable a wide range of technological applications. Here we report a cost-effective chemical solution deposition or polymer-assisted deposition method for growing epitaxial carbide (including TiC, VC, and TaC) films. These epitaxial carbide films exhibit structural and physical properties similar to the films grown by vapor deposition methods, C1 [Zou, Guifu; Mara, Nathan; Li, Nan; Di, Zengfeng; Bauer, Eve; Wang, Yongqiang; McCleskey, Thomas; Burrell, Anthony; Nastasi, Michael; Jia, Quanxi] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Wang, Haiyan; Zhang, Xinghang] Texas A&M Univ, College Stn, TX 77843 USA. [Luo, Hongmei] New Mexico State Univ, Las Cruces, NM 88003 USA. RP Zou, GF (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM gfzou@lanl.gov; qxjia@lanl.gov RI Li, Nan /F-8459-2010; di, zengfeng/B-1684-2010; ZOU, GUIFU/C-8498-2011; McCleskey, Thomas/J-4772-2012; Jia, Q. X./C-5194-2008; Zhang, Xinghang/H-6764-2013; Mara, Nathan/J-4509-2014; Wang, Haiyan/P-3550-2014; OI Li, Nan /0000-0002-8248-9027; Zhang, Xinghang/0000-0002-8380-8667; Wang, Haiyan/0000-0002-7397-1209; Mccleskey, Thomas/0000-0003-3750-3245; Mara, Nathan/0000-0002-9135-4693 FU U.S. Department of Energy; Center for Integrated Nanotechnologies; NSF [NSF0709831, NSF0846504] FX This work was Supported by the U.S. Department of Energy through the LANL/LDRD Program and the Center for Integrated Nanotechnologies. H.W. thanks the NSF for funding (NSF0709831 and NSF0846504). NR 21 TC 15 Z9 16 U1 2 U2 39 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 3 PY 2010 VL 132 IS 8 BP 2516 EP + DI 10.1021/ja9102315 PG 3 WC Chemistry, Multidisciplinary SC Chemistry GA 563HD UT WOS:000275117900013 PM 20136140 ER PT J AU Varotto, A Nam, CY Radivojevic, I Tome, JPC Cavaleiro, JAS Black, CT Drain, CM AF Varotto, Alessandro Nam, Chang-Yong Radivojevic, Ivana Tome, Joao P. C. Cavaleiro, Jose A. S. Black, Charles T. Drain, Charles Michael TI Phthalocyanine Blends Improve Bulk Heterojunction Solar Cells SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID SEPARATION; EFFICIENCY; FULLERENE AB A core phthalocyanine platform allows engineering of the solubility properties the band gap, shifting the maximum absorption toward the red. A simple method for increasing the efficiency of heterojunction solar Cells Uses a self-organized blend of phthalocyanine chromophores fabricated by solution processing. C1 [Nam, Chang-Yong; Black, Charles T.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. [Varotto, Alessandro; Radivojevic, Ivana; Drain, Charles Michael] CUNY Hunter Coll, Dept Chem & Biochem, New York, NY 10065 USA. [Tome, Joao P. C.; Cavaleiro, Jose A. S.] Univ Aveiro, Dept Chem, P-3810193 Aveiro, Portugal. [Drain, Charles Michael] Rockefeller Univ, New York, NY 10065 USA. RP Black, CT (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. EM ctblack@bnl.gov; cdrain@hunter.cuny.edu RI Tome, Joao/K-6782-2014; Nam, Chang-Yong/D-4193-2009; OI Tome, Joao/0000-0001-6057-4936; Nam, Chang-Yong/0000-0002-9093-4063; Cavaleiro, Jose/0000-0001-5495-5126 FU National Science Foundation (NSF) [CHE-0847997]; Goldhaber Distinguished Fellowship; National Institutes of Health [G12-RR-03037]; CUNY; U.S. Department of Energy [DE-AC02-98CH10886] FX This work was supported by the National Science Foundation (NSF, CHE-0847997 to C.M.D.), and a Goldhaber Distinguished Fellowship to C.-Y.N. Hunter College science infrastructure is supported by the NSF, the National Institutes of Health (including RCMI, G12-RR-03037), and CUNY. Research was carried out in part at the Center for Functional Nanomaterials, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. We thank Mr. Matthew Jurow for assistance with some of the control experiments and for duplicating the results described herein. NR 30 TC 68 Z9 69 U1 1 U2 35 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 3 PY 2010 VL 132 IS 8 BP 2552 EP + DI 10.1021/ja907851x PG 4 WC Chemistry, Multidisciplinary SC Chemistry GA 563HD UT WOS:000275117900031 PM 20136126 ER PT J AU Bag, P Itkis, ME Pal, SK Donnadieu, B Tham, FS Park, H Schlueter, JA Siegrist, T Haddon, RC AF Bag, Pradip Itkis, Mikhail E. Pal, Sushanta K. Donnadieu, Bruno Tham, Fook S. Park, Hyunsoo Schlueter, John A. Siegrist, Theo Haddon, Robert C. TI Resonating Valence Bond and sigma-Charge Density Wave Phases in a Benzannulated Phenalenyl Radical SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID EXCITED TRIPLET-STATE; MOLECULAR CONDUCTORS; CRYSTAL-STRUCTURE; ELECTRONIC-PROPERTIES; TRANSFER COMPLEX; ORGANIC METALS; TRANSFER SALTS; DISELENADIAZOLYL RADICALS; PHYSICAL-PROPERTIES; GROUND-STATE AB We report the preparation of the first benzannulated phenalenyl neutral radical conductor (18), and we show that the compound displays unprecedented solid state behavior: the structure is dominated by two sets of intermolecular interactions: (1) a T-chain structure with superimposed pi-overlap of the benzannulated phenalenyls along [0 0 1], and (2) an interchain overlap involving a pair of carbon atoms (C4) along [0 1 0]. The pi-chain-type stacking motif is reminiscent of previously reported phenalenyl radicals and the room temperature structure (space group P2/c) together with the conductivity of sigma(RT) = 0.03 S/cm and the Pauli-like magnetic susceptibility are best described by the resonating valence bond (RVB) model. The interchain interaction is unstable with respect to the formation of a a-charge density wave (sigma-CDW) involving pairs of C4 carbon atoms between adjacent radicals and this phase is characterized by the P2(1)/c space group which involves a doubling of the unit cell along the [0 1 0] direction. The RVB and CDW phases compete for structural occupancy throughout the whole temperature range (15-293 K) with the RVB phase predominating at 15 and 293 K and the sigma-CDW phase achieving a maximum structural occupancy of about 60% at 150 K where it produces clearly discernible effects on the magnetism and conductivity. C1 [Bag, Pradip; Itkis, Mikhail E.; Pal, Sushanta K.; Donnadieu, Bruno; Tham, Fook S.; Haddon, Robert C.] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA. [Bag, Pradip; Itkis, Mikhail E.; Pal, Sushanta K.; Donnadieu, Bruno; Tham, Fook S.; Haddon, Robert C.] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA. [Park, Hyunsoo; Schlueter, John A.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Siegrist, Theo] Florida State Univ, Dept Chem & Biomed Engn, Tallahassee, FL 32310 USA. RP Haddon, RC (reprint author), Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA. EM haddon@ucr.edu RI Haddon, Robert/A-2528-2008; Bag, Pradip/J-3043-2013 OI Haddon, Robert/0000-0002-7903-5139; FU Office of Basic Energy Sciences, U.S. Department of Energy [DE-FG02-04ER46138]; U.S. Department of Energy Office of Science Laboratory [DE-AC02-06CH 11357] FX We thank Elena Bekayarova for helping to measure conductivity of the powder sample. Supported by the Office of Basic Energy Sciences, U.S. Department of Energy under grant no. DE-FG02-04ER46138 and by Argonne, a U.S. Department of Energy Office of Science Laboratory, operated under Contract No. DE-AC02-06CH 11357. NR 89 TC 26 Z9 26 U1 0 U2 8 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0002-7863 J9 J AM CHEM SOC JI J. Am. Chem. Soc. PD MAR 3 PY 2010 VL 132 IS 8 BP 2684 EP 2694 DI 10.1021/ja908768a PG 11 WC Chemistry, Multidisciplinary SC Chemistry GA 563HD UT WOS:000275117900051 PM 20136137 ER PT J AU Hancock, JN Chabot-Couture, G Greven, M AF Hancock, J. N. Chabot-Couture, G. Greven, M. TI Lattice coupling and Franck-Condon effects in K-edge resonant inelastic x-ray scattering SO NEW JOURNAL OF PHYSICS LA English DT Article ID SPECTRA AB In this paper, we discuss our recent Cu K-edge resonant inelastic x-ray scattering (RIXS) results for CuB(2)O(4), a model system consisting of electronically isolated CuO(4) plaquettes, which exhibits anomalies in the incident photon energy dependence that are not captured by electron-only models. We show that these anomalous features can be qualitatively described by extending the electron-only considerations to include the lattice degrees of freedom. Our findings have important general implications for the interpretation of K-edge RIXS results for electronically higher-dimensional transition metal oxides. C1 [Hancock, J. N.] Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. [Hancock, J. N.] Univ Geneva, Dept Phys Matiere Condensee, CH-1211 Geneva, Switzerland. [Chabot-Couture, G.; Greven, M.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA. [Greven, M.] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. RP Hancock, JN (reprint author), Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA. EM jason.hancock@unige.ch RI Hancock, Jason/F-4694-2010 FU DOE [DE-AC02-76SF00515] FX We acknowledge valuable conversations with Girsh Blumberg, Dirk van der Marel and Francois Vernay. JNH would like to acknowledge the continued support of Eleiza Braun. This work was supported by the DOE under Contract No. DE-AC02-76SF00515. NR 27 TC 9 Z9 9 U1 0 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1367-2630 J9 NEW J PHYS JI New J. Phys. PD MAR 3 PY 2010 VL 12 AR 033001 DI 10.1088/1367-2630/12/3/033001 PG 10 WC Physics, Multidisciplinary SC Physics GA 566EZ UT WOS:000275354200001 ER PT J AU Dey, KR Wong, BM Hossain, MA AF Dey, Kalpana R. Wong, Bryan M. Hossain, Md. Alamgir TI Rational design of a macrocycle-based chemosensor for anions SO TETRAHEDRON LETTERS LA English DT Article ID MOLECULAR-DYNAMICS SIMULATIONS; POLYAMMONIUM MACROCYCLES; NONCOVALENT INTERACTIONS; COORDINATION CHEMISTRY; COMPLEXES; RECEPTORS; RECOGNITION; WATER; HOST; CONSTANTS AB A macrocycle-based fluorescence chemosensor has been designed and synthesized from the reaction of dansyl chloride and a hexaaminomacrocycle containing four secondary and two tertiary amines. The new chemosensor has been examined For its binding ability towards phosphate, sulfate, nitrate, iodide, bromide, chloride, and fluoride by fluorescence spectroscopy in DMSO. The results indicate that the compound binds each of the anions with a 11 stoichiometry, showing high affinity for oxoanions, chloride, and iodide with binding constants up to four orders of magnitude Ab initio calculations based on density functional theory (DFT) suggest that the ligand is deformed in order to encapsulate in anion, and each anion, except fluoride, is bonded to the macrocycle through two NH X(-) and four CH X(-) interactions (C) 2010 Elsevier Ltd All rights reserved. C1 [Dey, Kalpana R.; Hossain, Md. Alamgir] Jackson State Univ, Dept Chem & Biochem, Jackson, MS 39212 USA. [Wong, Bryan M.] Sandia Natl Labs, Dept Chem Mat, Livermore, CA 94551 USA. RP Hossain, MA (reprint author), Jackson State Univ, Dept Chem & Biochem, 1400 J R Lynch St,POB 17910, Jackson, MS 39212 USA. RI Wong, Bryan/B-1663-2009 OI Wong, Bryan/0000-0002-3477-8043 FU National Center for Research Resources [G12RR013459]; National Science Foundation [CHE-0821357] FX The project described was supported by Grant No G12RR013459 from the National Center for Research Resources. This material is based upon Work supported by the National Science Foundation under CHE-0821357. The facilities from analytical core laboratory at Jackson State University are greatly appreciated NR 27 TC 26 Z9 26 U1 0 U2 9 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0040-4039 J9 TETRAHEDRON LETT JI Tetrahedron Lett. PD MAR 3 PY 2010 VL 51 IS 9 BP 1329 EP 1332 DI 10.1016/j.tetlet.2010.01.004 PG 4 WC Chemistry, Organic SC Chemistry GA 560YZ UT WOS:000274943100023 PM 20401319 ER PT J AU Cheung, CL Rubinstein, AI Peterson, EJ Chatterji, A Sabirianov, RF Mei, WN Lin, T Johnson, JE DeYoreo, JJ AF Cheung, Chin Li Rubinstein, Alexander I. Peterson, Erik J. Chatterji, Anju Sabirianov, Renat F. Mei, Wai-Ning Lin, Tianwei Johnson, John E. DeYoreo, James J. TI Steric and Electrostatic Complementarity in the Assembly of Two-Dimensional Virus Arrays SO LANGMUIR LA English DT Article ID PROTEIN-PROTEIN ASSOCIATION; COWPEA MOSAIC-VIRUS; CAPILLARY FORCES; QUANTUM DOTS; SURFACES; POLYMER; NANOSCALE; PARTICLES; DNA; ENHANCEMENT AB A highly ordered assembly of biological molecules provides a powerful means to study the orgnizational principles of objects at the nanoscale. Two-dimensional cowpea mosaic virus arrays were assembled in an ordered manner on mica using osmotic depletion effects and a drop-and-dry method. The packing of the virus array was controlled systematically from rhombic packing to hexagonal packing by modulating the concentrations of poly(ethylene glycol) surfactant in the virus solutions. The orientation and packing symmetry of the virus arrays were found to be tuned by the concentrations of surfactants in the sample solutions. A phenomenological model fo the present system is proposed to explain the assembly array morphology under the influence of the surfactant. Steric and electrostatic complementary of neighboring virus capsids is found to be the key factors in controlling the symmetry of packing. C1 [Cheung, Chin Li; Peterson, Erik J.; DeYoreo, James J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Rubinstein, Alexander I.; Sabirianov, Renat F.; Mei, Wai-Ning] Univ Nebraska, Dept Phys, Omaha, NE 68182 USA. [Chatterji, Anju; Lin, Tianwei; Johnson, John E.] Scripps Res Inst, Dept Mol Biol, La Jolla, CA 92037 USA. RP Cheung, CL (reprint author), Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA. EM ccheung2@unl.edu RI Cheung, Chin Li/B-8270-2013 FU U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory [W-7405-Eng-48]; Office of Naval Research [N00014-00-1-0671]; U.S. Department of Energy (DOE), Office of Basic Energy Science (BES), Division of Materials Science and Engineering FX Part of this work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory, under Contract W-7405-Eng-48. C.L.C., A.R., R.F.S., and W.N.M. thank the University of Nebraska at Lincoln and Nebraska Research Initiative for partial financial support. T.L. and J.E.J. acknowledge the support of Office of Naval Research (N00014-00-1-0671). J.D.Y. acknowledges U.S. Department of Energy (DOE), Office of Basic Energy Science (BES), Division of Materials Science and Engineering for support of this research NR 58 TC 12 Z9 12 U1 1 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD MAR 2 PY 2010 VL 26 IS 5 BP 3498 EP 3505 DI 10.1021/la903114s PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 556ZP UT WOS:000274636900077 PM 19754157 ER PT J AU Manocchi, AK Horelik, NE Lee, B Yi, H AF Manocchi, Amy K. Horelik, Nicholas E. Lee, Byeongdu Yi, Hyunmin TI Simple, Readily Controllable Palladium Nanoparticle Formation on Surface-Assembled Viral Nanotemplates SO LANGMUIR LA English DT Article ID TOBACCO-MOSAIC-VIRUS; NUCLEIC-ACID HYBRIDIZATION; X-RAY-SCATTERING; GOLD NANOPARTICLES; BATTERY ELECTRODES; NANOWIRES; DNA; CATALYST; METALLIZATION; VISUALIZATION AB Transition-metal nanoparticles possess unique size-dependent optical, electronic, and catalytic properties on the nanoscale, which differ significantly from their bulk properties. In particular, palladium (Pd) nanoparticles have properties applicable to a wide range of applications in Catalysis and electronics. However, predictable and controllable nanoparticle synthesis remains challenging because of harsh reaction conditions, artifacts from capping agents, and unpredictable growth. Biological supramolecules offer attractive templates for nanoparticle synthesis because of their precise structure and size. In this article. we demonstrate simple, controllable Pd nanoparticle synthesis on surface-assembled viral nanotemplates. Specifically. we exploit precisely spaced thiol functionalities of genetically modified tobacco Mosaic Virus (TMVIcys) for facile surface assembly and readily controllable Pd nanoparticle synthesis via simple electroless deposition Under mild aqueous conditions. Atomic force microscopy (AFM) Studies clearly show tunable surface assembly and Pd nanoparticle formation preferentially on the TMVIcys templates. Grazing incidence small-angle X-ray scattering (GISAXS) further provided all accurate and statistically meaningful route by which to investigate the broad size ranges and uniformity of the Pd nanoparticles formed on TMV templates by simply tuning the reducer concentration. We believe that our viral-templated bottom-up approach to tunable Pd nanoparticle formation combined with the first in-depth characterization via GISAXS represents a major advancement toward exploiting viral templates for facile nanomaterials/device fabrication. We envision that our strategy can be extended to a wide range of applications, including uniform nanostructure and nanocatalyst synthesis. C1 [Manocchi, Amy K.; Horelik, Nicholas E.; Yi, Hyunmin] Tufts Univ, Dept Biol & Chem Engn, Medford, MA 02144 USA. [Lee, Byeongdu] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. RP Yi, H (reprint author), Tufts Univ, Dept Biol & Chem Engn, Medford, MA 02144 USA. EM hyunmin.yi@tufts.edu RI Yi, Hyunmin/B-9852-2008; OI Lee, Byeongdu/0000-0003-2514-8805 FU U.S. Department of Energy [DE-AC-02-06CH11357]; Wittich Family Fund FX We gratefully acknowledge Dr. James Culver at the University of Maryland Biotechnology Institute, Center for Biosystems Research For his generous gift of TMVlcys. The work at Argonne National Laboratory was supported by the U.S. Department of Energy, BES-Chemical Sciences and BES-Scientific User Facilities under contract DE-AC-02-06CH11357 with UChicago Argonne, LLC, operator of Argonne National Laboratory. Also, we thank Dr. Sonke Seifert at APS Sector 12, Argonne National Laboratory for his Valuable assistance with the GISAXS Measurements. Finally, we acknowledge the Harvard University Center for Nanoscale Systems (CNS) for the use of TEM for nanoparticle analysis and specifically Dr. David Lange at Harvard CNS for his assistance with the XPS analysis. Partial funding for this work was provided by the Tufts Summer Scholars award (N.E.H.) and the Wittich Family Fund For Energy Sustainability. NR 57 TC 49 Z9 51 U1 2 U2 45 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0743-7463 J9 LANGMUIR JI Langmuir PD MAR 2 PY 2010 VL 26 IS 5 BP 3670 EP 3677 DI 10.1021/la9031514 PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA 556ZP UT WOS:000274636900103 PM 19919039 ER PT J AU Grzyska, PK Appelman, EH Hausinger, RP Proshlyakov, DA AF Grzyska, Piotr K. Appelman, Evan H. Hausinger, Robert P. Proshlyakov, Denis A. TI Insight into the mechanism of an iron dioxygenase by resolution of steps following the Fe-IV=O species SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE ferric-oxo; ferryl; non-heme iron; oxygenation; transient Raman ID TAURINE/ALPHA-KETOGLUTARATE DIOXYGENASE; HEME-LINKED IONIZATION; RESONANCE RAMAN-SPECTROSCOPY; CHLOROPEROXIDASE COMPOUND-II; HYDROGEN-ATOM ABSTRACTION; SPIN FE(IV) COMPLEX; ALPHA-KETOGLUTARATE; OXYGEN ACTIVATION; ESCHERICHIA-COLI; HORSERADISH-PEROXIDASE AB Iron oxygenases generate elusive transient oxygen species to catalyze substrate oxygenation in a wide range of metabolic processes. Here we resolve the reaction sequence and structures of such intermediates for the archetypal non-heme Fe-II and alpha-ketoglutarate-dependent dioxygenase TauD. Time-resolved Raman spectra of the initial species with (OO)-O-16-O-18 oxygen unequivocally establish the Fe-IV=O structure. H-1/H-2 substitution reveals direct interaction between the oxo group and the C1 proton of substrate taurine. Two new transient species were resolved following Fe-IV=O; one is assigned to the nu(FeO) mode of an Fe-III-O(H) species, and a second is likely to arise from the vibration of a metal-coordinated oxygenated product, such as Fe-II-O-C-1 or Fe-II-OOCR. These results provide direct insight into the mechanism of substrate oxygenation and suggest an alternative to the hydroxyl radical rebinding paradigm. C1 [Grzyska, Piotr K.; Hausinger, Robert P.; Proshlyakov, Denis A.] Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA. [Grzyska, Piotr K.; Hausinger, Robert P.] Michigan State Univ, Dept Microbiol & Mol Genet, E Lansing, MI 48824 USA. [Appelman, Evan H.] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA. RP Hausinger, RP (reprint author), Michigan State Univ, Dept Biochem & Mol Biol, E Lansing, MI 48824 USA. EM hausinge@msu.edu; proshlya@msu.edu FU National Institutes of Health [GM063584, GM070544]; Office of Basic Energy Sciences; U.S. Department of Energy FX This work was supported by the National Institutes of Health Grants GM063584 (to R. P. H.) and GM070544 (to D. A. P.). Synthesis of 16O18O was generously supported by Drs. John L. Lipscomb and the late Gerald T. Babcock and was carried out under the auspices of the Office of Basic Energy Sciences, U.S. Department of Energy. NR 43 TC 38 Z9 38 U1 1 U2 35 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 2 PY 2010 VL 107 IS 9 BP 3982 EP 3987 DI 10.1073/pnas.0911565107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 563KP UT WOS:000275131100010 PM 20147623 ER PT J AU Breidenbach, MA Gallagher, JEG King, DS Smart, BP Wu, P Bertozzi, CR AF Breidenbach, Mark A. Gallagher, Jennifer E. G. King, David S. Smart, Brian P. Wu, Peng Bertozzi, Carolyn R. TI Targeted metabolic labeling of yeast N-glycans with unnatural sugars SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE click chemistry; GlcNAc; metabolic engineering; N-glycosylation; GNA1 ID ASPARAGINE-LINKED GLYCOSYLATION; GLCNAC-MODIFIED PROTEINS; SUBSTRATE-SPECIFICITY; CANDIDA-ALBICANS; SACCHAROMYCES-CEREVISIAE; STAUDINGER LIGATION; LIVING ANIMALS; IDENTIFICATION; BIOSYNTHESIS; PATHWAY AB Metabolic labeling of glycans with synthetic sugar analogs has emerged as an attractive means for introducing nonnatural chemical functionality into glycoproteins. However, the complexities of glycan biosynthesis prevent the installation of nonnatural moieties at defined, predictable locations within glycoproteins at high levels of incorporation. Here, we demonstrate that the conserved N-acetyglucosamine (GlcNAc) residues within chitobiose cores of N-glycans in the model organism Saccharomyces cerevisiae can be specifically targeted for metabolic replacement by unnatural sugars. We introduced an exogenous GlcNAc salvage pathway into yeast, allowing cells to metabolize GlcNAc provided as a supplement to the culture medium. We then rendered the yeast auxotrophic for production of the donor nucleotide-sugar uridine-diphosphate-GlcNAc (UDP-GlcNAc) by deletion of the essential gene GNA1. We demonstrate that gna1 Delta strains require a GlcNAc supplement and that expression plasmids containing both exogenous components of the salvage pathway, GlcNAc transporter NGT1 from Candida albicans and GlcNAc kinase NAGK from Homo sapiens, are required for rescue in this context. Further, we show that cells successfully incorporate synthetic GlcNAc analogs N-azidoacetyglucosamine (GlcNAz) and N-(4-pentynoyl)-glucosamine (GlcNAl) into cell-surface glycans and secreted glycoproteins. To verify incorporation of the nonnatural sugars at N-glycan core positions, endoglycosidase H (endoH)-digested peptides from a purified secretory glycoprotein, Ygp1, were analyzed by mass spectrometry. Multiple Ygp1 N-glycosylation sites bearing GlcNAc, isotopically labeled GlcNAc, or GlcNAz were identified; these modifications were dependent on the supplement added to the culture medium. This system enables the production of glycoproteins that are functionalized for specific chemical modifications at their glycosylation sites. C1 [Breidenbach, Mark A.; Smart, Brian P.; Wu, Peng; Bertozzi, Carolyn R.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Gallagher, Jennifer E. G.; Bertozzi, Carolyn R.] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA. [King, David S.; Bertozzi, Carolyn R.] Univ Calif Berkeley, Howard Hughes Med Inst, Berkeley, CA 94720 USA. [Bertozzi, Carolyn R.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Bertozzi, CR (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM crb@berkeley.edu FU National Institutes of Health [GM066047]; NSF [DBI-0511799] FX We wish to extend our gratitude toward Dr. T. Starr, J. Baskin, S. Hubbard, Dr. J. Seeliger, and Dr. M. Boyce for technical assistance, reagents, and helpful discussion. This work was supported by National Institutes of Health Grant GM066047 (to C.R.B.). J. E. G. G was supported by NSF postdoctoral fellowship DBI-0511799. NR 40 TC 37 Z9 40 U1 3 U2 34 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 2 PY 2010 VL 107 IS 9 BP 3988 EP 3993 DI 10.1073/pnas.0911247107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 563KP UT WOS:000275131100011 PM 20142501 ER PT J AU Sindelar, CV Downing, KH AF Sindelar, Charles V. Downing, Kenneth H. TI An atomic-level mechanism for activation of the kinesin molecular motors SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE ATPase; cryoelectron microscopy; motility; myosin; structure ID ATP HYDROLYSIS; NUCLEOTIDE-BINDING; EPR SPECTROSCOPY; MYOSIN; DOMAIN; CONFORMATIONS; MICROTUBULES; RESOLUTION; PROTEINS; PATHWAY AB Kinesin cytoskeletal motors convert the energy of ATP hydrolysis into stepping movement along microtubules. A partial model of this process has been derived from crystal structures, which show that movement of the motor domain relative to its major microtubule binding element, the switch II helix, is coupled to docking of kinesin's neck linker element along the motor domain. This docking would displace the cargo in the direction of travel and so contribute to a step. However, the crystal structures do not reveal how ATP binding and hydrolysis govern this series of events. We used cryoelectron microscopy to derive 8-9 angstrom-resolution maps of four nucleotide states encompassing the microtubule-attached kinetic cycle of a kinesin motor. The exceptionally high quality of these maps allowed us to build in crystallographically determined conformations of kinesin's key subcomponents, yielding novel arrangements of kinesin's switch II helix and nucleotide-sensing switch loops. The resulting atomic models reveal a seesaw mechanism in which the switch loops, triggered by ATP binding, propel their side of the motor domain down and thereby elicit docking of the neck linker on the opposite side of the seesaw. Microtubules engage the seesaw mechanism by stabilizing the formation of extra turns at the N terminus of the switch II helix, which then serve as an anchor for the switch loops as they modulate the seesaw angle. These observations explain how microtubules activate kinesin's ATP-sensing machinery to promote cargo displacement and inform the mechanism of kinesin's ancestral relative, myosin. C1 [Sindelar, Charles V.; Downing, Kenneth H.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Life Sci, Berkeley, CA 94720 USA. RP Sindelar, CV (reprint author), Brandeis Univ, Rosenstiel Ctr, Dept Biochem, MS 029,415 South St, Waltham, MA 02454 USA. EM sindelar@brandeis.edu FU National Institutes of Health; U.S. Department of Energy [DE-AC02-05CH11231] FX We gratefully acknowledge N. Grigorieff for helical adaptation of his FREALIGN software, and N. Guydosh, S. Rice, and K. Hirose for constructive comments on the manuscript. This work is supported by National Institutes of Health grants GM46033 and GM51487 and by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. NR 33 TC 89 Z9 92 U1 1 U2 11 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 2 PY 2010 VL 107 IS 9 BP 4111 EP 4116 DI 10.1073/pnas.0911208107 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA 563KP UT WOS:000275131100032 PM 20160108 ER PT J AU Wang, CC Tsai, HH Shih, HH Jeon, SH Xu, ZH Williams, D Iyer, S Sanchez, TC Wang, L Cotlet, M Wang, HL AF Wang, Chun-Chih Tsai, Hsinhan Shih, Hung-Hsin Jeon, Seaho Xu, Zhihua Williams, Darrick Iyer, Srinivas Sanchez, Timothy C. Wang, Leeyih Cotlet, Mircea Wang, Hsing-Lin TI Synthesis and Characterization of Ethylene Glycol Substituted Poly(phenylene Vinylene) Derivatives SO ACS APPLIED MATERIALS & INTERFACES LA English DT Article DE conjugated polymer; synthesis; optical properties; redox; photophysics ID SOLUBLE CONJUGATED POLYMERS; ELECTROLUMINESCENCE PROPERTIES; POLY(P-PHENYLENE VINYLENE); OXIDE); COPOLYMER; SENSORS; DNA; POLYELECTROLYTES; MULTILAYERS; DEPENDENCE AB We report the synthesis of a series of water-soluble, Fluorescent, conjugated polymers via the Gilch reaction with an overall yield greater than 40 %. The yield for the Gilch reaction decreases with the increase in the length of the side chain (ethylene glycol repeat units), presumably due to the steric effects inhibiting the linking of monomeric units. The hydrophilic side chain enhances the solubility of the polymer in water and concomitantly leads to a side-chain-dependent conformation and solvent-dependent quantum efficiency. An increase in the ethylene glycol repeat units on the polymer side chain structure results in changes in chain packing; hence, the crystallinity evolves from semicrystalline to liquid crystalline to completely amorphous. An increase in the length of the side chain leads to changes in the polymer-solvent interaction as manifested in the photophysical properties of these polymers. These novel polymers exhibit two glass transition temperatures, which can be readily rationalized by differences in microstructure when casted from hydrophobic and hydrophilic solvents. Cyclic voltammograms of polymer 1d-3d suggest two-electron transfer, as compared to P1 which has one complete redox pair. The potential of having a nanoscaled domain structure and stabilizing two electrons on a polymer chain signifies the potential of these polymers in fabricating electronic and photovoltaic devices. C1 [Xu, Zhihua; Cotlet, Mircea] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. [Wang, Chun-Chih; Tsai, Hsinhan; Shih, Hung-Hsin; Jeon, Seaho; Wang, Hsing-Lin] Los Alamos Natl Lab, Div Chem, Los Alamos, NM 87545 USA. [Williams, Darrick] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA. [Iyer, Srinivas; Sanchez, Timothy C.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. [Wang, Leeyih] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10764, Taiwan. [Wang, Leeyih] Natl Taiwan Univ, Inst Polymer Sci & Technol, Taipei 10764, Taiwan. RP Cotlet, M (reprint author), Brookhaven Natl Lab, Ctr Funct Nanomat, Mail Stop 735, Upton, NY 11973 USA. EM cotlet@bnl.gov; hwang@lanl.gov OI Sanchez, Timothy/0000-0001-8952-4414 FU U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886, DE-AC52-06NA25396, DE-AC04-94AL85000] FX This research was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering. Research was also carried out in part at the Center for Functional Nanomaterials, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Division of Materials Sciences and Division of Chemical Sciences, under Contract No. DE-AC02-98CH10886 (MC, ZX with user HLW). Research was also performed, in part, at the Center for integrated Nanotechnologies, a U.S. Department of Energy, Office of Basic Energy Sciences user facility at Los Alamos National Laboratory (Contract DE-AC52-06NA25396) and Sandia National Laboratories (Contract DE-AC04-94AL85000) (DW, with user HLW). We thank Dr. Kumara Mudalige from Brookhaven National Laboratory in Upton, New York, for help with atomic force microscopy and dynamic light scattering experiments. NR 26 TC 6 Z9 6 U1 3 U2 12 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1944-8244 J9 ACS APPL MATER INTER JI ACS Appl. Mater. Interfaces PD MAR PY 2010 VL 2 IS 3 BP 738 EP 747 DI 10.1021/am900766s PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA 572JA UT WOS:000275825700023 PM 20356275 ER PT J AU Brumbach, MT Alam, TM Kotula, PG McKenzie, BB Bunker, BC AF Brumbach, Michael T. Alam, Todd M. Kotula, Paul G. McKenzie, Bonnie B. Bunker, Bruce C. TI Nanostructured Ruthenium Oxide Electrodes via High-Temperature Molecular Templating for Use in Electrochemical Capacitors SO ACS APPLIED MATERIALS & INTERFACES LA English DT Article DE electrodes; ruthenium oxide; templating; nanostructures; thin films; electrical energy storage; ultracapacitor ID NEXT-GENERATION SUPERCAPACITORS; SINGLE-CRYSTAL SURFACES; X-RAY-SCATTERING; THERMAL-DECOMPOSITION; HYDROUS RUO2; COMPOSITE ELECTRODES; THIOLATO COMPLEXES; MASS-SPECTROMETRY; FILM ELECTRODES; CHARGE STORAGE AB Ruthenium oxide is a model pseudocapacitive materials exhibiting good electronic and protonic conduction and has been shown to, achieve very high gravimetric capacitances, However, the capacitance of thermally prepared ruthenium oxide is generally low because of low protonic conductivity resulting from dehydration of the oxide upon annealing. High-temperature processing, however also produces the electrically conducting ruthenium oxide rutile phase, which is of great interest for electrochemical capacitors. Here, unusual electrochemical characteristics were obtained for thermally prepared ruthenium oxide when fabricated in the presence of alkyl-thiols at high temperature. The performance characteristics have been attributed to enhanced multifunctional properties of the material resulting from the novel processing. The processing method relies on a simple, solution-based strategy that utilizes a sacrificial organic template to sterically direct hierarchical architecture formation in electro-active ruthenium oxide. Thin films of the templated RuO(2) exhibit energy storage characteristics comparable to hydrous ruthenium oxide materials formed under dramatically different conditions. Extensive materials characterization has revealed that these property enhancements are associated with the retention of molecular-sized metal oxide Clusters, high hydroxyl concentrations, and formation of hierarchical porosity in the ruthenium oxide thin films. C1 [Brumbach, Michael T.; Alam, Todd M.; Kotula, Paul G.; McKenzie, Bonnie B.; Bunker, Bruce C.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Brumbach, MT (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM mtbrumb@sandia.gov RI Kotula, Paul/A-7657-2011 OI Kotula, Paul/0000-0002-7521-2759 FU Sandia National Laboratories Laboratory Directed Research and Development Program FX Thanks to Michael Rye and Garry Bryant for FIB-SEM cross-section analyses, Terry Garino for help with thermal analyses, James (Tony) Ohlhausen for TOF-SIMS analyses, and Ralph G. Tissot for XRD analyses. Thanks also to Erik Spoerke, Robert Nilson, Mark Roberts, Dave Wheeler, and Geoff Brennecka for thoughtful discussions. The authors are grateful for support from Sandia National Laboratories Laboratory Directed Research and Development Program. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. NR 85 TC 12 Z9 12 U1 4 U2 14 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1944-8244 J9 ACS APPL MATER INTER JI ACS Appl. Mater. Interfaces PD MAR PY 2010 VL 2 IS 3 BP 778 EP 787 DI 10.1021/am9007903 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Science & Technology - Other Topics; Materials Science GA 572JA UT WOS:000275825700029 PM 20356281 ER PT J AU Kim, K Sussman, A Zettl, A AF Kim, Kwanpyo Sussman, Allen Zettl, A. TI Graphene Nanoribbons Obtained by Electrically Unwrapping Carbon Nanotubes SO ACS NANO LA English DT Article DE graphene nanoribbon; carbon nanotube; in situ TEM ID MONOLAYER GRAPHENE; SHEETS; RESONATORS; BREAKDOWN; FORM AB We describe a clean method of graphene nanoribbon (GNR) extraction from multiwall carbon nanotubes (MWNTs), performed in a high vacuum, nonchemical environment. Electrical current and nanomanipulation are used to unwrap a portion of the MWNT and thus produce a GNR of desired width and length. The unwrapping method allows GNRs to be concurrently characterized structurally via high-resolution transmission electron microscopy (TEM) and evaluated for electrical transport, including situations for which the GNR is severely mechanically flexed. High quality GNRs have exceptional current-carrying capacity, comparable to the exfoliated graphene. C1 [Kim, Kwanpyo; Sussman, Allen; Zettl, A.] Univ Calif Berkeley, Dept Phys, Ctr Integrated Nanomech Syst, Div Mat Sci,Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Zettl, A (reprint author), Univ Calif Berkeley, Dept Phys, Ctr Integrated Nanomech Syst, Div Mat Sci,Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM azettl@berkeley.edu RI Kim, Kwanpyo/D-9121-2011; Zettl, Alex/O-4925-2016 OI Kim, Kwanpyo/0000-0001-8497-2330; Zettl, Alex/0000-0001-6330-136X NR 30 TC 89 Z9 90 U1 6 U2 90 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1936-0851 J9 ACS NANO JI ACS Nano PD MAR PY 2010 VL 4 IS 3 BP 1362 EP 1366 DI 10.1021/nn901782g PG 5 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 572UE UT WOS:000275858200015 PM 20131856 ER PT J AU Martinez, MT Tseng, YC Salvador, JP Marco, MP Ormategui, N Loinaz, I Bokor, J AF Teresa Martinez, Maria Tseng, Yu-Chih Pablo Salvador, Juan Pilar Marco, Maria Ormategui, Nerea Loinaz, Iraida Bokor, Jeffrey TI Electronic Anabolic Steroid Recognition with Carbon Nanotube Field-Effect Transistors SO ACS NANO LA English DT Article DE biosensing; immunosensing; carbon nanotubes; field-effect transistors; anabolic steroids ID NANOWIRE NANOSENSORS; BOVINE URINE; BIOSENSORS; DNA; FUNCTIONALIZATION; IMMUNOSENSORS; STANOZOLOL; MEDICINE; DEVICES; ASSAY AB A proof of concept of the electronic detection of two anabolic steroids, stanozolol (Stz) and methylboldenone (MB), was carried out using two specific antibodies and arrays of carbon nanotube field-effect transistors (CNTFETs). Antibodies specific for Stz and MB were prepared and immobilized on the carbon nanotubes (CNTs) using two different approaches: direct noncovalent bonding of antibodies to the devices and bonding the antibodies covalently to a polymer previously attached to the CNTFETs. The results indicated that CNTFETs bonded to specific antibodies covalently or noncovalently are able to detect the presence of steroids. Statistically significant changes in the threshold voltage and drain current were registered in the transistors, allowing the steroids to be recognized. On the other hand, it was determined that the specific antibodies do not detect other steroids other than Stz and MB, such as nandrolone (ND) because, in this case, statistically significant changes in the transistors were not detected. The polymer prevents the aggregation of antibodies on the electrodes and decreases the transistor hysteresis, Nevertheless, it is not able to avoid the nonspecific adsorption of streptavidin, meaning that nonspecific adsorption on CNTs remains a problem and that this methodology is only useful for purified samples. Regarding the detection mechanism, in addition to charge transfer, Schottky barrier, SB, modification, and scattering potential reported by other authors, an electron/hole trapping mechanism leading to hysteresis modification has been determined. The presence of polymer seems to hinder the modulation of the electrode-CNT contact. C1 [Teresa Martinez, Maria] CSIC, Inst Carboquim, Zaragoza, Spain. [Teresa Martinez, Maria; Bokor, Jeffrey] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Tseng, Yu-Chih; Bokor, Jeffrey] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94720 USA. [Pablo Salvador, Juan; Pilar Marco, Maria] CSIC, IQAC, Chem & Biomol Nanotechnol Dept, Appl Mol Receptors Grp AMRg, ES-08034 Barcelona, Spain. [Pablo Salvador, Juan; Pilar Marco, Maria] CIBER BBN, Networking Res Ctr Bioengn Biomat & Nanomed, San Sebastian 20009, Spain. [Ormategui, Nerea; Loinaz, Iraida] CIDETEC P Miramon, San Sebastian 20009, Spain. RP Martinez, MT (reprint author), CSIC, Inst Carboquim, Miguel Luesma 4, Zaragoza, Spain. EM mtmartinez@icb.csic.es RI MARCO, M-Pilar/A-9836-2015; Tseng, Yu-Chih/G-4213-2011; Salvador, J.-Pablo/I-3664-2012; Martinez, M Teresa/N-2163-2014 OI MARCO, M-Pilar/0000-0002-4064-1668; Salvador, J.-Pablo/0000-0002-3608-0634; Martinez, M Teresa/0000-0003-4606-255X FU Spanish MEC [NAN2004-09415-C05-05]; Molecular Foundry LBNL [126]; Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]; Departament d'Universitats, Recerca i Societat de la Informacio la Generalitat de Catalunya [2005SGR 00207]; MSD Focus Center; Focus Center Research Program; Semiconductor Research Corporation program FX This work has been supported in part by the Spanish MEC Project NAN2004-09415-C05-05 and by the Molecular Foundry LBNL, Project 126. The devices were fabricated at the UC Berkeley Microlab. Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The AMR group is a Grup de Recerca de la Generalitat de Catalunya and has support from the Departament d'Universitats, Recerca i Societat de la Informacio la Generalitat de Catalunya (expedient 2005SGR 00207). Y.-C.T. and J.B. acknowledge the support of the MSD Focus Center, one of five research centers funded under the Focus Center Research Program, a Semiconductor Research Corporation program. NR 36 TC 9 Z9 9 U1 0 U2 15 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1936-0851 J9 ACS NANO JI ACS Nano PD MAR PY 2010 VL 4 IS 3 BP 1473 EP 1480 DI 10.1021/nn901547b PG 8 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 572UE UT WOS:000275858200029 PM 20146439 ER PT J AU Wang, DH Kou, R Choi, D Yang, ZG Nie, ZM Li, J Saraf, LV Hu, DH Zhang, JG Graff, GL Liu, J Pope, MA Aksay, IA AF Wang, Donghai Kou, Rong Choi, Daiwon Yang, Zhenguo Nie, Zimin Li, Juan Saraf, Laxmikant V. Hu, Dehong Zhang, Jiguang Graff, Gordon L. Liu, Jun Pope, Michael A. Aksay, Ilhan A. TI Ternary Self-Assembly of Ordered Metal Oxide-Graphene Nanocomposites for Electrochemical Energy Storage SO ACS NANO LA English DT Article DE nanocomposite; ordered; graphene; li-ion battery ID LITHIUM-ION BATTERIES; GRAPHITE OXIDE; FUNCTIONALIZED GRAPHENE; CARBON NANOTUBES; MESOPOROUS SILICA; LIQUID INTERFACE; SHEETS; FILMS; COMPOSITES; SURFACTANT AB Surfactant or polymer directed self-assembly has been widely investigated to prepare nanostructured metal oxides, semiconductors, and polymers, but this approach is mostly limited to two-phase materials, organic/inorganic hybrids, and nanoparticle or polymer-based nanocomposites. Self-assembled nanostructures from more complex, multiscale, and multiphase building blocks have been investigated with limited success. Here, we demonstrate a ternary self-assembly approach using graphene as fundamental building blocks to construct ordered metal oxide-graphene nanocomposites. A new class of layered nanocomposites is formed containing stable, ordered alternating layers of nanocrystalline metal oxides with graphene or graphene stacks. Alternatively, the graphene or graphene stacks can be incorporated into liquid-crystal-templated nanoporous structures to form high surface area, conductive networks. The self-assembly method can also be used to fabricate free-standing, flexible metal oxide-graphene nanocomposite films and electrodes. We have investigated the Li-ion insertion properties of the self-assembled electrodes for energy storage and show that the SnO2-graphene nanocomposite films can achieve near theoretical specific energy density without significant charge/discharge degradation. C1 [Wang, Donghai; Kou, Rong; Choi, Daiwon; Yang, Zhenguo; Nie, Zimin; Li, Juan; Saraf, Laxmikant V.; Hu, Dehong; Zhang, Jiguang; Graff, Gordon L.; Liu, Jun] Pacific NW Natl Lab, Richland, WA 99352 USA. [Pope, Michael A.; Aksay, Ilhan A.] Princeton Univ, Princeton, NJ 08544 USA. RP Liu, J (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM jun.liu@pnl.gov; iaksay@princeton.edu RI Choi, Daiwon/B-6593-2008; Aksay, Ilhan/B-9281-2008; Hu, Dehong/B-4650-2010; Wang, Donghai/L-1150-2013; OI Hu, Dehong/0000-0002-3974-2963; Wang, Donghai/0000-0001-7261-8510; Pope, Michael/0000-0002-5793-3392 FU Laboratory-Directed Research and Development Program at Pacific North-west National Laboratory (PNNL); U.S. Department of Energy (DOE) [KC020105-FWP12152, DE-AC05-76RL01830]; ARO MURI [W911NF-09-1-0476] FX This work is supported by the Laboratory-Directed Research and Development Program at Pacific North-west National Laboratory (PNNL) and by the U.S. Department of Energy (DOE). The nanocomposite development was supported by the DOE Office of Basic Energy Sciences, Division of Materials Science and Engineering under Award KC020105-FWP12152. The battery fabrication and testing was supported by the Office of Energy Efficiency and Renewable Energy. The TEM and SEM investigations were performed at the Environmental Molecular Sciences Laboratory, a national scientific-user facility sponsored by DOE's Office of Biological and Environmental Research and located at PNNL. PNNL is a multiprogram national laboratory operated for DOE by Battelle under Contract DE-AC05-76RL01830. IAA acknowledges support from ARO MURI under Grant No. W911NF-09-1-0476. NR 64 TC 506 Z9 517 U1 76 U2 821 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1936-0851 J9 ACS NANO JI ACS Nano PD MAR PY 2010 VL 4 IS 3 BP 1587 EP 1595 DI 10.1021/nn901819n PG 9 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 572UE UT WOS:000275858200042 PM 20184383 ER PT J AU Fowlkes, JD Rack, PD AF Fowlkes, Jason D. Rack, Philip D. TI Fundamental Electron-Precursor-Solid Interactions Derived from Time-Dependent Electron-Beam-Induced Deposition Simulations and Experiments SO ACS NANO LA English DT Article DE electron-beam-induced deposition; nanofabrication; EBID; directed assembly ID RESOLUTION; MOLECULE; GROWTH AB Unknown parameters critical to understanding the electron-precursor-substrate interactions during electron-beam-induced deposition (EBID) have long limited our ability to fully control this nanoscale, directed assembly method. We report here values that describe the precursor-solid interaction, the precursor surface diffusion coefficient (D), the precursor sticking probability (delta), and the mean precursor surface residence time (tau), which are critical parameters for understanding the assembly of EBID deposits. Values of D = 6.4 mu m(2) s(-1), delta = 0.0250, and tau = 3.20 ms were determined for a commonly used precursor molecule, tungsten hexacarbonyl W(CO)(6). Space and time predictions of the adsorbed precursor coverage were solved by an explicit finite differencing numerical scheme. Evolving nanopillar surface morphology was derived from simulations considering electron-induced dissociation as the critical depletion term. This made it possible to infer the space- and time-dependent precursor coverage both on and around nanopillar structures to better understand local precursor dynamics during mass-transport-limited (MTL) and reaction-rate-limited (RRL) EBID. C1 [Fowlkes, Jason D.; Rack, Philip D.] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Nanofabricat Res Lab, Oak Ridge, TN 37381 USA. [Rack, Philip D.] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA. RP Fowlkes, JD (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Nanofabricat Res Lab, Oak Ridge, TN 37381 USA. EM fowlkesjd@ornl.gov OI Rack, Philip/0000-0002-9964-3254 FU Division of Scientific User Facilities, Office of Basic Energy Sciences, U.S. Department of Energy; Semiconductor Research Corporation; Center for Nanophase Materials Sciences; U.S. Government [DE-AC05-00OR22725] FX This research was conducted at the Nanofabrication Research Laboratory, Center for Nanophase Materials Sciences, which is sponsored by the Division of Scientific User Facilities, Office of Basic Energy Sciences, U.S. Department of Energy. P.R. gratefully acknowledges support from both the Semiconductor Research Corporation and the Center for Nanophase Materials Sciences. J.F. acknowledges that a portion of this research was sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U.S. Department of Energy. This article has been authorized by a contractor of the U.S. Government under contract DE-AC05-00OR22725. NR 37 TC 33 Z9 33 U1 1 U2 16 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1936-0851 J9 ACS NANO JI ACS Nano PD MAR PY 2010 VL 4 IS 3 BP 1619 EP 1629 DI 10.1021/nn901363a PG 11 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 572UE UT WOS:000275858200046 PM 20201541 ER PT J AU Garberoglio, G Johnson, JK AF Garberoglio, Giovanni Johnson, J. Karl TI Hydrogen Isotope Separation in Carbon Nanotubes: Calculation of Coupled Rotational and Translational States at High Densities SO ACS NANO LA English DT Article DE quantum sieving; path integral Monte Carlo; hybrid Monte Carlo; grand canonical Monte Carlo; quantum rotors; isotopic effect; adsorption ID SINGLE-WALLED CARBON; INTEGRAL MONTE-CARLO; MOLECULAR-DYNAMICS; LOW TEMPERATURES; ORGANIC FRAMEWORK; D-2 ADSORPTION; QUANTUM STATES; SIMULATIONS; SURFACE; PORES AB The effect of the quantized rotational degrees of freedom of hydrogen on the adsorption and sieving properties in carbon nanotubes is studied using computer simulations. We have developed a highly efficient multiple timestep algorithm for hybrid Monte Carlo sampling of quantized rotor configurations and extended the grand canonical Boltzmann bias method to rigid linear molecules. These new computational tools allow us to calculate accurately the quantum sieving selectivities for cases of extreme two-dimensional confinement as a function of pressure. The para-T(2)/para-H(2) selectivity at 20 K is analyzed as a function of the tube diameter and the density of adsorbed hydrogen. Extraordinarily high selectivities, up to 2.6 x 10(8), are observed in the narrowest nanotube. The quantized nature of the rotational degrees of freedom is found to dramatically affect adsorption and selectivity for hydrogen isotopes adsorbed in very narrow nanotubes. The T(2)/H(2) zero-pressure selectivity increases from 2.4 x 10(4) to 1.7 x 10(8) in the (3,6) nanotube at 20 K when quantum rotations are accounted for. The isotopic selectivity is found to increase with pressure, tending to a constant value at saturation. A simplified mean-field model is used to discuss the origin of this behavior. C1 [Garberoglio, Giovanni] Univ Trent, Dipartimento Fis, I-38100 Povo, TN, Italy. [Garberoglio, Giovanni; Johnson, J. Karl] Univ Pittsburgh, Dept Chem & Petr Engn, Pittsburgh, PA 15261 USA. [Garberoglio, Giovanni; Johnson, J. Karl] Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. [Garberoglio, Giovanni] Univ Trent, CNISM, I-38100 Povo, TN, Italy. RP Garberoglio, G (reprint author), FBK IRST, Ctr Mat & Microsyst, Via Sommarive 18, I-38100 Trento, Italy. EM garberog@science.unitn.it; karlj@pitt.edu RI Johnson, Karl/E-9733-2013; OI Johnson, Karl/0000-0002-3608-8003; Garberoglio, Giovanni/0000-0002-9201-2716 NR 47 TC 32 Z9 32 U1 1 U2 30 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 1936-0851 J9 ACS NANO JI ACS Nano PD MAR PY 2010 VL 4 IS 3 BP 1703 EP 1715 DI 10.1021/nn901592x PG 13 WC Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Chemistry; Science & Technology - Other Topics; Materials Science GA 572UE UT WOS:000275858200056 PM 20146443 ER PT J AU Chen, LX Zhang, XY Lockard, JV Stickrath, AB Attenkofer, K Jennings, G Liu, DJ AF Chen, Lin X. Zhang, Xiaoyi Lockard, Jenny V. Stickrath, Andrew B. Attenkofer, Klaus Jennings, Guy Liu, Di-Jia TI Excited-state molecular structures captured by X-ray transient absorption spectroscopy: a decade and beyond SO ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES LA English DT Review ID FEMTOSECOND FLUORESCENCE SPECTROSCOPY; RAMAN DISPERSION SPECTROSCOPY; CHARGE-TRANSFER STATES; RESONANCE RAMAN; COPPER(II) PORPHYRINS; BENZYLIDYNE COMPLEXES; EXCIPLEX FORMATION; PHOTOEXCITED METALLOPORPHYRIN; PHOTOPHYSICAL PROPERTIES; PHOTOREDOX PROPERTIES AB Transient molecular structures along chemical reaction pathways are important for predicting molecular reactivity, understanding reaction mechanisms, as well as controlling reaction pathways. During the past decade, X-ray transient absorption spectroscopy (XTA, or LITR-XAS, laser-initiated X-ray absorption spectroscopy), analogous to the commonly used optical transient absorption spectroscopy, has been developed. XTA uses a laser pulse to trigger a fundamental chemical process, and an X-ray pulse(s) to probe transient structures as a function of the time delay between the pump and probe pulses. Using X-ray pulses with high photon flux from synchrotron sources, transient electronic and molecular structures of metal complexes have been studied in disordered media from homogeneous solutions to heterogeneous solution-solid interfaces. Several examples from the studies at the Advanced Photon Source in Argonne National Laboratory are summarized, including excited-state metalloporphyrins, metal-to-ligand charge transfer (MLCT) states of transition metal complexes, and charge transfer states of metal complexes at the interface with semiconductor nanoparticles. Recent developments of the method are briefly described followed by a future prospective of XTA. It is envisioned that concurrent developments in X-ray free-electron lasers and synchrotron X-ray facilities as well as other table-top laser-driven femtosecond X-ray sources will make many breakthroughs and realise dreams of visualizing molecular movies and snapshots, which ultimately enable chemical reaction pathways to be controlled. C1 [Chen, Lin X.; Lockard, Jenny V.; Stickrath, Andrew B.; Liu, Di-Jia] Argonne Natl Lab, Adv Photon Source, Chem Sci & Engn Div, Argonne, IL 60430 USA. [Chen, Lin X.] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA. [Zhang, Xiaoyi; Attenkofer, Klaus; Jennings, Guy] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60430 USA. RP Chen, LX (reprint author), Argonne Natl Lab, Adv Photon Source, Chem Sci & Engn Div, 9700 S Cass Ave, Argonne, IL 60430 USA. EM lchen@anl.gov FU Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences of the US Department of Energy [DE-AC02-06CH11357] FX The experimental work was funded by the Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences of the US Department of Energy through Grant DE-AC02-06CH11357 (LX, XZ, JVL, AB, KA and GJ). The authors would like to thank Drs Wighard Jager, Tao Liu, George B. Shaw, Erik C. Wasinger, David J. Gosztola, Jan Hessler, Andrew Goshe and Grigory Smolentsev for their contributions to the XTA work. LXC is very grateful for the collaborations with Professors Gerald J. Meyer, Jonathan S. Lindsey, Michael D. Hopkins, Michael R. Wasielewski, F. Castellano, Alexander V. Soldatov and Danial G. Nocera and their groups in various institutions. The ongoing collaboration with Dr David M. Tiede and the Photosynthesis Group at Argonne is also gratefully acknowledged. The long-time support from the Sector 11 and 12 staff at the Advanced Photon Source has been invaluable to the work presented here. Use of the Advanced Photon Source was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. NR 119 TC 37 Z9 37 U1 3 U2 48 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0108-7673 EI 1600-5724 J9 ACTA CRYSTALLOGR A JI Acta Crystallogr. Sect. A PD MAR PY 2010 VL 66 BP 240 EP 251 DI 10.1107/S0108767309051496 PN 2 PG 12 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA 556TB UT WOS:000274614000012 PM 20164647 ER PT J AU Guzei, IA Arachchige, I Ivanov, SA AF Guzei, Ilia A. Arachchige, Indika Ivanov, Sergei A. TI Two polymorphs of chlorido(cyclohexyldiphenylphosphine)gold(I) SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article ID THEORETICAL CHEMISTRY; CRYSTAL-STRUCTURES; COMPLEXES; GOLD AB The title compound, [AuCl(C(18)H(21)P)], a monomeric two-coordinate gold(I) complex, has been characterized at 100 K as two distinct monoclinic polymorphs, one from a single crystal, (Is), and one from a pseudo-merohedrally twinned crystal, (It). The molecular structures in the two monoclinic [P2(1)/n for (Is) and P2(1)/c for (It)] polymorphs are similar; however, the packing arrangements in the two lattices differ considerably. The structure of (It) is pseudo-merohedrally twinned by a twofold rotation about the a* axis. C1 [Guzei, Ilia A.] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA. [Arachchige, Indika; Ivanov, Sergei A.] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. RP Guzei, IA (reprint author), Univ Wisconsin, Dept Chem, 1101 Univ Ave, Madison, WI 53706 USA. EM iguzei@chem.wisc.edu RI Ivanov, Sergei/B-5505-2011 FU Los Alamos National Laboratory Directed Research and Development FX This research was supported by Los Alamos National Laboratory Directed Research and Development. This work was performed at the Center for Integrated Nanotechnologies, a US Department of Energy, Office of Basic Energy Sciences user facility. The manuscript was prepared with the beta test version 1.0.2 of the programs publCIF (Westrip, 2010) and modiCIFer (Guzei, 2007). NR 21 TC 1 Z9 1 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD MAR PY 2010 VL 66 BP M55 EP M57 DI 10.1107/S0108270110001861 PN 3 PG 3 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA 564DY UT WOS:000275194700007 PM 20203394 ER PT J AU Terwilliger, TC AF Terwilliger, Thomas C. TI Rapid model building of alpha-helices in electron-density maps SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID CRYSTAL-STRUCTURE; THERMOTOGA-MARITIMA; MYCOBACTERIUM-TUBERCULOSIS; ANGSTROM RESOLUTION; SECONDARY STRUCTURE; 3-DIMENSIONAL STRUCTURE; STRUCTURE REFINEMENT; PATTERN-RECOGNITION; ESCHERICHIA-COLI; STRUCTURAL BASIS AB A method for the identification of alpha-helices in electrondensity maps at low resolution followed by interpretation at moderate to high resolution is presented. Rapid identification is achieved at low resolution, where alpha-helices appear as tubes of density. The positioning and direction of the alpha-helices is obtained at moderate to high resolution, where the positions of side chains can be seen. The method was tested on a set of 42 experimental electron-density maps at resolutions ranging from 1.5 to 3.8 angstrom. An average of 63% of the alpha-helical residues in these proteins were built and an average of 76% of the residues built matched helical residues in the refined models of the proteins. The overall average r.m.s.d. between main-chain atoms in the modeled alpha-helices and the nearest atom with the same name in the refined models of the proteins was 1.3 angstrom. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Terwilliger, TC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM terwilliger@lanl.gov RI Terwilliger, Thomas/K-4109-2012 OI Terwilliger, Thomas/0000-0001-6384-0320 FU NIGMS NIH HHS [1P01 GM063210, P01 GM063210] NR 66 TC 5 Z9 6 U1 0 U2 2 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0907-4449 J9 ACTA CRYSTALLOGR D JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD MAR PY 2010 VL 66 BP 268 EP 275 DI 10.1107/S0907444910000314 PN 3 PG 8 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 555SX UT WOS:000274536400006 PM 20179338 ER PT J AU Terwilliger, TC AF Terwilliger, Thomas C. TI Rapid model building of beta-sheets in electron-density maps SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID CRYSTAL-STRUCTURE; THERMOTOGA-MARITIMA; MYCOBACTERIUM-TUBERCULOSIS; ANGSTROM RESOLUTION; SECONDARY STRUCTURE; STRUCTURAL CHARACTERIZATION; 3-DIMENSIONAL STRUCTURE; STRUCTURE REFINEMENT; PATTERN-RECOGNITION; ESCHERICHIA-COLI AB A method for rapidly building beta-sheets into electron-density maps is presented. beta-Strands are identified as tubes of high density adjacent to and nearly parallel to other tubes of density. The alignment and direction of each strand are identified from the pattern of high density corresponding to carbonyl and C(beta) atoms along the strand averaged over all repeats present in the strand. The beta-strands obtained are then assembled into a single atomic model of the beta-sheet regions. The method was tested on a set of 42 experimental electron-density maps at resolutions ranging from 1.5 to 3.8 angstrom. The beta-sheet regions were nearly completely built in all but two cases, the exceptions being one structure at 2.5 angstrom resolution in which a third of the residues in beta-sheets were built and a structure at 3.8 angstrom in which under 10% were built. The overall average r.m.s.d. of main-chain atoms in the residues built using this method compared with refined models of the structures was 1.5 angstrom. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Terwilliger, TC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM terwilliger@lanl.gov RI Terwilliger, Thomas/K-4109-2012 OI Terwilliger, Thomas/0000-0001-6384-0320 FU NIGMS NIH HHS [1P01 GM063210, P01 GM063210] NR 70 TC 2 Z9 2 U1 0 U2 1 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0907-4449 J9 ACTA CRYSTALLOGR D JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD MAR PY 2010 VL 66 BP 276 EP 284 DI 10.1107/S0907444910000302 PN 3 PG 9 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 555SX UT WOS:000274536400007 PM 20179339 ER PT J AU Terwilliger, TC AF Terwilliger, Thomas C. TI Rapid chain tracing of polypeptide backbones in electron-density maps SO ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY LA English DT Article ID CRYSTAL-STRUCTURE; THERMOTOGA-MARITIMA; MYCOBACTERIUM-TUBERCULOSIS; ANGSTROM RESOLUTION; PROTEIN MODELS; 3-DIMENSIONAL STRUCTURE; STRUCTURE REFINEMENT; ESCHERICHIA-COLI; STRUCTURAL BASIS; TERMINAL DOMAIN AB A method for the rapid tracing of polypeptide backbones has been developed. The method creates an approximate chain tracing that is useful for visual evaluation of whether a structure has been solved and for use in scoring the quality of electron-density maps. The essence of the method is to (i) sample candidate C(alpha) positions at spacings of approximately 0.6 angstrom along ridgelines of high electron density, (ii) list all possible nonapeptides that satisfy simple geometric and density criteria using these candidate C(alpha) positions, (iii) score the nonapeptides and choose the highest scoring ones, and (iv) find the longest chains that can be made by connecting nonamers. An indexing and storage scheme that allows a single calculation of most distances and density values is used to speed up the process. The method was applied to 42 density-modified electron-density maps at resolutions from 1.5 to 3.8 angstrom. A total of 21 428 residues in these maps were traced in 24 CPU min with an overall r.m.s.d. of 1.61 angstrom for C(alpha) atoms compared with the known refined structures. The method appears to be suitable for rapid evaluation of electron-density map quality. C1 Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Terwilliger, TC (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA. EM terwilliger@lanl.gov RI Terwilliger, Thomas/K-4109-2012 OI Terwilliger, Thomas/0000-0001-6384-0320 FU NIH [1P01 GM063210] FX The author would like to thank the NIH Protein Structure Initiative for generous support of the Phenix project (1P01 GM063210; P. D. Adams, PI) and the members of the Phenix project for extensive collaboration and discussions. The author is grateful to the many researchers who contributed their data to the PHENIX structure library. The algorithm described here is carried out by the PHENIX routine phenix.find_helices_strands. NR 72 TC 0 Z9 0 U1 0 U2 2 PU WILEY-BLACKWELL PUBLISHING, INC PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0907-4449 J9 ACTA CRYSTALLOGR D JI Acta Crystallogr. Sect. D-Biol. Crystallogr. PD MAR PY 2010 VL 66 BP 285 EP 294 DI 10.1107/S0907444910000272 PN 3 PG 10 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 555SX UT WOS:000274536400008 PM 20179340 ER PT J AU Stewart, CA Dickie, DA Kemp, RA AF Stewart, Constantine A. Dickie, Diane A. Kemp, Richard A. TI 1,3-Bis(phenylsufanylmethyl)benzene SO ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE LA English DT Article ID X-RAY; DICATIONIC TELLURANES; LIGANDS; SILVER(I); COMPLEXES AB The complete molecule of the title compound, C20H18S2, is generated by crystallographic mirror symmetry, with two C atoms lying on the mirror plane. All of the independent atoms are contained within two planes defined by the thiophenyl rings (C6S) and the central phenyl ring with the methylene bridge; the r.m.s deviations of these planes are 0.012 and 0.025 angstrom, respectively. The two planes are almost perpendicular to one another at a dihedral angle of 80.24 (10)degrees. Intermolecular C-H-pi interactions are present in the crystal structure. C1 [Dickie, Diane A.; Kemp, Richard A.] 1 Univ New Mexico, Dept Chem & Chem Biol, Albuquerque, NM 87131 USA. [Stewart, Constantine A.] Sandia Natl Labs, Adv Mat Lab, Albuquerque, NM 87106 USA. RP Kemp, RA (reprint author), 1 Univ New Mexico, Dept Chem & Chem Biol, MSC03 2060, Albuquerque, NM 87131 USA. EM rakemp@unm.edu RI Dickie, Diane/B-1647-2010 OI Dickie, Diane/0000-0003-0939-3309 FU Department of Energy [DE-FG02-06ER15765, DE-AC04-94 A L85000]; Sandia LDRD [105932]; National Science Foundation [CHE-0443580] FX Funding was provided by a Department of Energy grant (DE-FG02-06ER15765 to RAK) and the Sandia LDRD progam (105932). Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under Contract No. DE-AC04-94 A L85000. The diffractometer was purchased via a National Science Foundation CRIF:MU award to the University of New Mexico (CHE-0443580). NR 16 TC 0 Z9 0 U1 0 U2 5 PU INT UNION CRYSTALLOGRAPHY PI CHESTER PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND SN 2056-9890 J9 ACTA CRYSTALLOGR E JI Acta Crystallogr. Sect. E.-Struct Rep. Online PD MAR PY 2010 VL 66 BP O677 EP U5542 DI 10.1107/S1600536810005775 PN 3 PG 9 WC Crystallography SC Crystallography GA 563JZ UT WOS:000275126500229 PM 21580423 ER PT J AU Cooper, DR Grelewska, K Kim, CY Joachimiak, A Derewenda, ZS AF Cooper, David R. Grelewska, Katarzyna Kim, Chang-Yub Joachimiak, Andrzej Derewenda, Zygmunt S. TI The structure of DinB from Geobacillus stearothermophilus: a representative of a unique four-helix-bundle superfamily SO ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY AND CRYSTALLIZATION COMMUNICATIONS LA English DT Article ID BACILLUS-SUBTILIS; PROTEIN-STRUCTURE; CRYSTAL-STRUCTURE; DNA-POLYMERASE; HISTIDINE; MUTAGENESIS; HYDROLASE; MECHANISM; FAMILIES; CLONING AB The crystal structure of the dinB gene product from Geobacillus stearothermophilus (GsDinB) is reported at 2.5 A resolution. The dinB gene is one of the DNA-damage-induced genes and the corresponding protein, DinB, is the founding member of a Pfam family with no known function. The protein contains a four-helix up-down-down-up bundle that has previously been described in the literature in three disparate proteins: the enzyme MDMPI (mycothiol-dependent maleylpyruvate isomerase), YfiT and TTHA0303, a member of a small DUF (domain of unknown function). However, a search of the DALI structural database revealed similarities to a further 11 new unpublished structures contributed by structural genomics centers. The sequences of these proteins are quite divergent and represent several Pfam families, yet their structures are quite similar and most (but not all) seem to have the ability to coordinate a metal ion using a conserved histidine-triad motif. The structural similarities of these diverse proteins suggest that a new Pfam clan encompassing the families that share this fold should be created. The proteins that share this fold exhibit four different quaternary structures: monomeric and three different dimeric forms. C1 [Cooper, David R.; Grelewska, Katarzyna; Derewenda, Zygmunt S.] Univ Virginia, Dept Mol Physiol & Biol Phys, Charlottesville, VA 22908 USA. [Kim, Chang-Yub] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM 87545 USA. [Joachimiak, Andrzej] Argonne Natl Lab, Biosci Div, Midwest Ctr Struct Genom, Argonne, IL 60439 USA. [Joachimiak, Andrzej] Argonne Natl Lab, Biosci Div, Struct Biol Ctr, Argonne, IL 60439 USA. RP Derewenda, ZS (reprint author), Univ Virginia, Dept Mol Physiol & Biol Phys, Charlottesville, VA 22908 USA. EM zsd4n@virginia.edu OI Kim, Chang-Yub/0000-0001-9353-5909 FU US Department of Energy, Office of Science, Office of Basic Energy Sciences [W-31-109-Eng-38]; NIH-NIGMS [U54 GM074946-01US] FX Use of the Advanced Photon Source was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. W-31-109-Eng-38. Supporting institutions of SER-CAT may be found at http://www.ser-cat.org/members.html. This study was supported by NIH-NIGMS Grant U54 GM074946-01US. NR 31 TC 5 Z9 5 U1 3 U2 5 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1744-3091 J9 ACTA CRYSTALLOGR F JI Acta Crystallogr. F-Struct. Biol. Cryst. Commun. PD MAR PY 2010 VL 66 BP 219 EP 224 DI 10.1107/S1744309109053913 PN 3 PG 6 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 562ND UT WOS:000275057700002 PM 20208147 ER PT J AU Chan, S Giuroiu, I Chernishof, I Sawaya, MR Chiang, J Gunsalus, RP Arbing, MA Perry, LJ AF Chan, Sum Giuroiu, Iulia Chernishof, Irina Sawaya, Michael R. Chiang, Janet Gunsalus, Robert P. Arbing, Mark A. Perry, L. Jeanne TI Apo and ligand-bound structures of ModA from the archaeon Methanosarcina acetivorans SO ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY AND CRYSTALLIZATION COMMUNICATIONS LA English DT Article ID MOLYBDATE-BINDING-PROTEIN; ACTIVE-TRANSPORT; SALMONELLA-TYPHIMURIUM; CRYSTAL-STRUCTURE; ESCHERICHIA-COLI; ABC TRANSPORTER; SPECIFICITY; CHEMOTAXIS; REFINEMENT; EVOLUTION AB The trace-element oxyanion molybdate, which is required for the growth of many bacterial and archaeal species, is transported into the cell by an ATP-binding cassette (ABC) transporter superfamily uptake system called ModABC. ModABC consists of the ModA periplasmic solute-binding protein, the integral membrane-transport protein ModB and the ATP-binding and hydrolysis cassette protein ModC. In this study, X-ray crystal structures of ModA from the archaeon Methanosarcina acetivorans (MaModA) have been determined in the apoprotein conformation at 1.95 and 1.69 angstrom resolution and in the molybdate-bound conformation at 2.25 and 2.45 angstrom resolution. The overall domain structure of MaModA is similar to other ModA proteins in that it has a bilobal structure in which two mixed alpha/beta domains are linked by a hinge region. The apo MaModA is the first unliganded archaeal ModA structure to be determined: it exhibits a deep cleft between the two domains and confirms that upon binding ligand one domain is rotated towards the other by a hinge-bending motion, which is consistent with the 'Venus flytrap' model seen for bacterial-type periplasmic binding proteins. In contrast to the bacterial ModA structures, which have tetrahedral coordination of their metal substrates, molybdate-bound MaModA employs octahedral coordination of its substrate like other archaeal ModA proteins. C1 [Chan, Sum; Giuroiu, Iulia; Chernishof, Irina; Sawaya, Michael R.; Chiang, Janet; Gunsalus, Robert P.; Arbing, Mark A.; Perry, L. Jeanne] Univ Calif Los Angeles, DOE, Inst Genom & Prote, Los Angeles, CA 90095 USA. [Gunsalus, Robert P.] Univ Calif Los Angeles, Dept Microbiol Immunol & Mol Genet, Los Angeles, CA 90095 USA. RP Arbing, MA (reprint author), Univ Calif Los Angeles, DOE, Inst Genom & Prote, Los Angeles, CA 90095 USA. EM marbing@mbi.ucla.edu OI Sawaya, Michael/0000-0003-0874-9043 FU Department of Energy Biosciences Division [DE-FG02-08ER64689] FX We thank the staff of beamline 8.2.2 at the Advanced Light Source for assistance with data collection. We thank the UCLA-DOE Protein Expression Technology Center and UCLA-DOE X-ray Crystallography Core Facility (both supported by Department of Energy Grant DE-FC02-02ER63421) and the UCLA Crystallization Core Facility. We thank Julian Whitelegge at the UCLA Pasarow Mass Spectrometry Laboratory for assistance with LC/MS. We also thank Aled Edwards, Masoud Vedadi, Frank Niesen, Abdellah Allali-Hassani and Patrick Finerty from the Structural Genomics Consortium at the University of Toronto for assistance with the differential scanning fluorimetry experiments. This research was supported by Department of Energy Biosciences Division grant award DE-FG02-08ER64689 (to RPG). NR 39 TC 5 Z9 5 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 1744-3091 J9 ACTA CRYSTALLOGR F JI Acta Crystallogr. F-Struct. Biol. Cryst. Commun. PD MAR PY 2010 VL 66 BP 242 EP 250 DI 10.1107/S1744309109055158 PN 3 PG 9 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Biophysics; Crystallography SC Biochemistry & Molecular Biology; Biophysics; Crystallography GA 562ND UT WOS:000275057700007 PM 20208152 ER PT J AU Muransky, O Barnett, MR Carr, DG Vogel, SC Oliver, EC AF Muransky, O. Barnett, M. R. Carr, D. G. Vogel, S. C. Oliver, E. C. TI Investigation of deformation twinning in a fine-grained and coarse-grained ZM20 Mg alloy: Combined in situ neutron diffraction and acoustic emission SO ACTA MATERIALIA LA English DT Article DE Magnesium; Deformation twinning; Twin nucleation; Neutron diffraction; Acoustic emission ID MAGNESIUM ALLOY; INTERGRANULAR STRAINS; TEXTURE DEVELOPMENT; TOF DIFFRACTOMETER; STRESS-RELAXATION; STAINLESS-STEEL; SIZE DEPENDENCE; YIELD STRENGTH; BEHAVIOR; METALS AB Neutron diffraction and acoustic emission were used in a single in situ experiment in order to study the deformation twinning of two ZM20 Mg alloys with significantly different grain sizes at room temperature. The combination of these two techniques facilitates the distinction between twin nucleation and twin growth. It is shown that yielding and immediate post-yielding plasticity in compression along the extrusion direction is governed primarily by twin nucleation, whereas plasticity at higher strains is presumably governed by twin growth and dislocation slip. It is further shown that, in the fine-grained alloy, collaborative twin nucleation in many grains dominates yielding, whereas twin nucleation in the coarse-grained alloy is progressive and occurs over a larger strain range. In addition, it is shown that, despite twin nucleation stresses increasing with decreasing grain size, roughly the same overall volume fraction of twins is formed in both fine and coarse parent grains. This confirms the difficulty of the alternative deformation modes and suggests a negligible suppressive effect of grain size on twinning in the case of the strongly textured fine-grained alloy. The current results also show that twins in the coarse-grained alloy are born less relaxed with respect to surrounding polycrystalline aggregate than those in the fine-grained alloy. This is believed to lead to lower reversal stresses acting on twin grains in the coarse-grained alloy upon unloading and thus to less untwinning and thus to a smaller pseudoelastic-like hysteresis. Crown Copyright (c) 2009 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved. C1 [Muransky, O.; Carr, D. G.] Australian Nucl & Technol Org, Menai, NSW 2234, Australia. [Barnett, M. R.] Deakin Univ, Sch Engn, Geelong, Vic 3217, Australia. [Vogel, S. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Oliver, E. C.] CCLRC Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QK, Oxon, England. RP Muransky, O (reprint author), Australian Nucl & Technol Org, PMB 1, Menai, NSW 2234, Australia. EM ondrej.muransky@ansto.gov.au RI Carr, David/G-2530-2010; Lujan Center, LANL/G-4896-2012; OI Carr, David/0000-0003-1134-5496; Vogel, Sven C./0000-0003-2049-0361 FU ISIS facility, Rutherford Appleton Laboratory [RB720084] FX The authors acknowledge the support from the ISIS facility, Rutherford Appleton Laboratory (Project No. RB720084), and supply of materials from the School of Engineering, Deakin University (D. Atwell). The authors further gratefully acknowledge helpful discussion with C.H. Caceres from the University of Queensland, Australia, on the pseudoleastic-like effect. The help of Prof. L. Edwards and M. Saleh from ANSTO, Australia, in reading and commenting on the manuscript is also very gratefully acknowledged. NR 63 TC 86 Z9 86 U1 3 U2 46 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD MAR PY 2010 VL 58 IS 5 BP 1503 EP 1517 DI 10.1016/j.actamat.2009.10.057 PG 15 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 560VG UT WOS:000274931200005 ER PT J AU Levine, JB Betts, JB Garrett, JD Guo, SQ Eng, JT Migliori, A Kaner, RB AF Levine, J. B. Betts, J. B. Garrett, J. D. Guo, S. Q. Eng, J. T. Migliori, A. Kaner, R. B. TI Full elastic tensor of a crystal of the superhard compound ReB2 SO ACTA MATERIALIA LA English DT Article DE Borides; Elastic moduli; Hardness; Resonant ultrasound spectroscopy; X-ray diffraction ID RHENIUM DIBORIDE; OSMIUM DIBORIDE; MECHANICAL-PROPERTIES; HARD MATERIAL; CONSTANTS; 1ST-PRINCIPLES; TEMPERATURE; PRESSURE AB The search for superhard materials, driven by their widespread use in industrial applications, highlights one of the most difficult problems in the field of materials science: the accurate characterization of a material's intrinsic physical properties. This paper reports on the full elastic tensor of two polycrystalline isotropic specimens and one specimen of ReB2 consisting of highly oriented grains. The high-monocrystal bulk modulus value extracted from the grain-oriented specimen, measured by resonant ultrasound spectroscopy, validates the Ultra-incompressibility of ReB2. An observed hardness of 40 GPa and a Debye temperature of 731 K were calculated for the ReB2 crystal, confirming its superhard and super-stiff properties. All the measured moduli of the ReB2 grain-oriented crystal exceed the comparable ones for the polycrystal by amounts that cannot be explained by averaging over direction, which may reveal why recent measurements reported on ReB2 containing excess boron yield values that are not as hard or incompressible as the crystal. (c) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 [Betts, J. B.; Migliori, A.] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA. [Levine, J. B.; Eng, J. T.; Kaner, R. B.] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA. [Levine, J. B.; Eng, J. T.; Kaner, R. B.] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA. [Garrett, J. D.] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada. [Guo, S. Q.] Natl Inst Mat Sci, Composites Grp, Tsukuba, Ibaraki 3050047, Japan. [Kaner, R. B.] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA. RP Migliori, A (reprint author), Los Alamos Natl Lab, Natl High Magnet Field Lab, POB 1663, Los Alamos, NM 87545 USA. EM migliori@cybermesa.com; kaner@chem.ucla.edu FU National Science Foundation [DMR-0805357, DMR-0654118]; IGERT Fellowship; State of Florida FX This work is supported by the National Science Foundation grants DMR-0805357 (JBL, RBK), DMR-0654118 (JBB, AM), an IGERT Fellowship (JBL) and the State of Florida. The authors thank B.E. Weaver for collecting the nanoindentation data. NR 39 TC 44 Z9 45 U1 1 U2 15 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD MAR PY 2010 VL 58 IS 5 BP 1530 EP 1535 DI 10.1016/j.actamat.2009.10.060 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 560VG UT WOS:000274931200007 ER PT J AU Zhou, CZ Biner, SB LeSar, R AF Zhou, Caizhi Biner, S. Bulent LeSar, Richard TI Discrete dislocation dynamics simulations of plasticity at small scales SO ACTA MATERIALIA LA English DT Article DE Dislocation dynamics; Size effects; Plasticity ID STRESS-STRAIN BEHAVIOR; HIGH-RATE DEFORMATION; SINGLE-CRYSTALS; MECHANICAL-PROPERTIES; CROSS-SLIP; UNIAXIAL COMPRESSION; NICKEL MICROCRYSTALS; MICROMETER-SCALE; SIZE DEPENDENCE; FCC AB Discrete dislocation dynamics simulations in three dimensions have been used to examine the role of dislocation multiplication and mobility on the plasticity in small samples under uniaxial compression. To account for the effects of the free surfaces a boundary-element method, with a superposition technique, was employed. Cross-slip motion of the dislocation was also included, and found to be critical to the modeling of the dislocation behavior. To compare directly with recent experiments on micropillars, simulation samples at small volumes were created by cutting them from bulk three-dimensional simulations, leading to a range of initial dislocation structures. Application was made to single-crystal nickel samples. Comparison of the simulation results and the experiments are excellent, finding essentially identical behavior. Examination of details of the dislocation mechanism illuminates many features unique to small samples and points directly to the importance of both the surface forces and cross-slip in understanding small-scale plasticity. (c) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 [Zhou, Caizhi; LeSar, Richard] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA. [Zhou, Caizhi; Biner, S. Bulent; LeSar, Richard] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. RP LeSar, R (reprint author), Iowa State Univ, Dept Mat Sci & Engn, 2220 Hoover Hall, Ames, IA 50011 USA. EM lesar@iastate.edu RI Zhou, Caizhi/A-7983-2012; LeSar, Richard/G-1609-2012 FU US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering FX The authors want to acknowledge many helpful discussions with Dr. Dennis Dimiduk of the Air Force Research Laboratory. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering. NR 65 TC 66 Z9 67 U1 5 U2 39 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD MAR PY 2010 VL 58 IS 5 BP 1565 EP 1577 DI 10.1016/j.actamat.2009.11.001 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 560VG UT WOS:000274931200011 ER PT J AU Kerr, M Daymond, MR Holt, RA Almer, JD AF Kerr, M. Daymond, M. R. Holt, R. A. Almer, J. D. TI Mapping of crack tip strains and twinned zone in a hexagonal close packed zirconium alloy SO ACTA MATERIALIA LA English DT Article DE Synchrotron diffraction; Fracture; Twinning; Zirconium; Micro-mechanical modeling ID UNIAXIAL DEFORMATION; TEXTURED ZIRCALOY-2; IN-SITU; DIFFRACTION; EVOLUTION; STRESSES AB This paper describes the use of synchrotron X-ray diffraction to map crack tip strain field evolution and initiation of twinning under applied load in a fatigue pre-cracked zirconium alloy. Compact tension specimens were machined in two orientations from a textured rolled plate and loaded along the normal direction and the transverse direction to rolling. Residual strains due to fatigue and the strains introduced at applied K(I) of approximately 10 and 30 MPa root m were measured for the two specimen orientations. Maps of the region of twinned material were determined. The experimental data is compared to finite element (FE) calculations for the crack tip strain fields and a prediction of the size of the twinned region using a multiscale model based on combining an FE approach with an elastoplastic self-consistent polycrystalline plasticity model. (c) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 [Kerr, M.; Daymond, M. R.; Holt, R. A.] Queens Univ, Dept Mech & Mat Engn, Kingston, ON, Canada. [Almer, J. D.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Daymond, MR (reprint author), Queens Univ, Dept Mech & Mat Engn, Kingston, ON, Canada. EM daymond@me.queensu.ca OI Daymond, Mark/0000-0001-6242-7489 FU NSERC; COG; OPG; Nu-Tech Precision Metals; Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-Ac02-06CH11357] FX Work supported by NSERC, COG, OPG and Nu-Tech Precision Metals under the Industrial Research Chair Program in Nuclear Materials at Queen's University. Use of the Advanced Photon Source was supported by the US Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-Ac02-06CH11357. M. K. wishes to thank F. Xu, C. Mareau and C. Cochrane for their assistance with this work. NR 33 TC 11 Z9 11 U1 1 U2 10 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD MAR PY 2010 VL 58 IS 5 BP 1578 EP 1588 DI 10.1016/j.actamat.2009.10.064 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 560VG UT WOS:000274931200012 ER PT J AU Li, Y Liu, W Ortalan, V Li, WF Zhang, Z Vogt, R Browning, ND Lavernia, EJ Schoenung, JM AF Li, Y. Liu, W. Ortalan, V. Li, W. F. Zhang, Z. Vogt, R. Browning, N. D. Lavernia, E. J. Schoenung, J. M. TI HRTEM and EELS study of aluminum nitride in nanostructured Al 5083/B4C processed via cryomilling SO ACTA MATERIALIA LA English DT Article DE High-resolution electron microscopy (HREM); Electron energy loss spectroscopy (EELS); Transmission electron microscopy (TEM); Particulate reinforced composites; Metal matrix composites (MMC) ID MICROSTRUCTURE CHARACTERIZATION; MECHANICAL-BEHAVIOR; MATERIALS SCIENCE; AL-5083; TEMPERATURE; MOLECULES; STRENGTH; ALLOY; HREM AB The presence of aluminum nitride in nanostructured aluminum metal matrix composites was studied by high resolution transmission electron microscopy, electron energy loss spectroscopy, energy dispersive X-ray spectroscopy analysis and electron microscopy simulations. Three types of aluminum nitride structures were identified; predominantly, one layer of N atoms occupies the tetrahedral interstitial positions in the Al lattice, the frequency of which varies as a function of spatial location. The second and third were in the form of hexagonal and possibly cubic aluminum nitride particles with particle sizes on the order of 15-20 nm. The results suggest that the aluminum nitride phase evolves from intermediate transitional structures that involve N atoms in the Al lattice. The aluminum nitride phases frequently contained O and Mg, which preferentially segregate in close proximity to the reinforcement particles. First-principle calculations were used to describe the influence of O and Mg on the adsorption of N. (c) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. C1 [Li, Y.; Liu, W.; Ortalan, V.; Zhang, Z.; Vogt, R.; Browning, N. D.; Lavernia, E. J.; Schoenung, J. M.] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. [Li, W. F.] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA. [Browning, N. D.] Lawrence Livermore Natl Lab, Chem Mat & Life Sci Directorate, Livermore, CA 94550 USA. RP Schoenung, JM (reprint author), Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA. EM jmschoenung@ucdavis.edu RI Li, Ying/G-3908-2010; Li, Wanfeng/A-3578-2012; Lavernia, Enrique/I-6472-2013; Liu, Wei/A-9357-2016; OI Li, Ying/0000-0003-3738-9307; Lavernia, Enrique/0000-0003-2124-8964; Liu, Wei/0000-0003-3016-7381; Browning, Nigel/0000-0003-0491-251X FU U.S. Army Research Laboratory (ARL); [W911NF-08-2-0028] FX Research was sponsored by U.S. Army Research Laboratory (ARL) and was accomplished under Cooperative Agreement W911NF-08-2-0028. The views and conclusions made in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of ARL or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation hereon. NR 23 TC 40 Z9 43 U1 2 U2 50 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1359-6454 J9 ACTA MATER JI Acta Mater. PD MAR PY 2010 VL 58 IS 5 BP 1732 EP 1740 DI 10.1016/j.actamat.2009.11.015 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA 560VG UT WOS:000274931200025 ER PT J AU Li, XL Glimm, J Jiao, XM Peyser, C Zhao, YH AF Li, Xiaolin Glimm, James Jiao, Xiangmin Peyser, Charles Zhao, Yanhong TI STUDY OF CRYSTAL GROWTH AND SOLUTE PRECIPITATION THROUGH FRONT TRACKING METHOD SO ACTA MATHEMATICA SCIENTIA LA English DT Article DE front tracking; crystal formation; fractal dimension ID DENDRITIC SOLIDIFICATION; SIMULATION AB Crystal growth and solute precipitation is a Stefan problem. It is a free boundary problem for a parabolic partial differential equation with a time-dependent phase interface. The velocity of the moving interface between solute and crystal is a local function. The dendritic structure of the crystal interface, which develops dynamically, requires high resolution of the interface geometry. These facts make the Lagrangian front tracking method well suited for the problem. In this paper, we introduce an upgraded version of the front tracking code and its associated algorithms for the numerical study of crystal formation. We compare our results with the smoothed particle hydrodynamics method (SPH) in terms of the crystal fractal dimension with its dependence on the Damkohler number and density ratio. C1 [Li, Xiaolin; Glimm, James; Jiao, Xiangmin; Zhao, Yanhong] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. [Glimm, James] Brookhaven Natl Lab, Computat Sci Ctr, Upton, NY 11793 USA. [Peyser, Charles] N Shore Hebrew Acad High Sch, Great Neck, NY 11020 USA. RP Li, XL (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. EM linli@ams.sunysb.edu; glimm@ams.sunysb.edu; jiao@ams.sunysb.edu OI Jiao, Xiangmin/0000-0002-7111-9813 FU US Department of Energy [DEFC0206ER25770]; ARO [W911NF0910306]; DOE [DEFG0707ID14889]; NSF [DMS0809285] FX Xiaolin Li and Yanhong Zhao are supported in part by the ITAPS Award from US Department of Energy DEFC0206ER25770 and the ARO Award W911NF0910306. James Glimm is supported in part by the DOE subaward through RPI with the Prime Award DEFG0707ID14889. Xiangmin Jiao is supported in part by NSF Award DMS0809285 and the ARO Award W911NF0910306. NR 15 TC 3 Z9 3 U1 2 U2 7 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0252-9602 J9 ACTA MATH SCI JI Acta Math. Sci. PD MAR PY 2010 VL 30 IS 2 BP 377 EP 390 PG 14 WC Mathematics SC Mathematics GA 575ZM UT WOS:000276112800003 ER PT J AU Wang, SQ Samulyak, R Guo, TF AF Wang, Shuqiang Samulyak, Roman Guo, Tongfei TI AN EMBEDDED BOUNDARY METHOD FOR ELLIPTIC AND PARABOLIC PROBLEMS WITH INTERFACES AND APPLICATION TO MULTI-MATERIAL SYSTEMS WITH PHASE TRANSITIONS SO ACTA MATHEMATICA SCIENTIA LA English DT Article DE embedded boundary method; elliptic interface problem; front tracking; Stefan problem ID FRONT-TRACKING; IRREGULAR DOMAINS; POISSONS-EQUATION; HEAT-EQUATION; DENDRITIC SOLIDIFICATION; ALGORITHM; MODELS AB The embedded boundary method for solving elliptic and parabolic problems in geometrically complex domains using Cartesian meshes by Johansen and Colella (1998, J. Comput. Phys. 147, 60) has been extended for elliptic and parabolic problems with interior boundaries or interfaces of discontinuities of material properties or solutions. Second order accuracy is achieved in space and time for both stationary and moving interface problems. The method is conservative for elliptic and parabolic problems with fixed interfaces. Based on this method, a front tracking algorithm for the Stefan problem has been developed. The accuracy of the method is measured through comparison with exact solution to a two-dimensional Stefan problem. The algorithm has been used for the study of melting and solidification problems. C1 [Wang, Shuqiang; Samulyak, Roman; Guo, Tongfei] SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. [Samulyak, Roman] Brookhaven Natl Lab, Computat Sci Ctr, Upton, NY 11973 USA. RP Wang, SQ (reprint author), SUNY Stony Brook, Dept Appl Math & Stat, Stony Brook, NY 11794 USA. EM shuwang@ams.sunysb.edu; rasamu@bnl.gov; tguo@ams.sunysb.edu FU U.S. Department of Energy [DE-AC02-98CH10886]; State of New York FX This research is supported by the U.S. Department of Energy under Contract No. DE-AC02-98CH10886 and by the State of New York. NR 26 TC 8 Z9 8 U1 0 U2 3 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0252-9602 J9 ACTA MATH SCI JI Acta Math. Sci. PD MAR PY 2010 VL 30 IS 2 BP 499 EP 521 PG 23 WC Mathematics SC Mathematics GA 575ZM UT WOS:000276112800007 ER PT J AU Grove, JW AF Grove, John W. TI PRESSURE-VELOCITY EQUILIBRIUM HYDRODYNAMIC MODELS SO ACTA MATHEMATICA SCIENTIA LA English DT Article DE Euler equations; multiple phase mixtures; non-equilibrium temperature mixtures ID RELAXATION-PROJECTION METHOD; FRONT TRACKING; MULTIPHASE MIXTURES; COMPRESSIBLE FLOWS; GODUNOV METHOD; INTERFACES; SHOCKS; TRANSITION; EQUATIONS; WAVES AB This article describes mathematical models for phase separated mixtures of materials that are in pressure and velocity equilibrium but not necessarily temperature equilibrium. General conditions for constitutive models for such mixtures that exhibit a single mixture sound speed are discussed and specific examples are described. C1 Los Alamos Natl Lab, Computat Phys Grp, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA. RP Grove, JW (reprint author), Los Alamos Natl Lab, Computat Phys Grp, Comp Computat & Stat Sci Div, CCS-2,MS D413, Los Alamos, NM 87545 USA. EM jgrove@lanl.gov FU Los Alamos National Laboratory; U.S. Department of Energy [DE-AC52-06NA25396] FX This works was supported by the Los Alamos National Laboratory, an affirmative action/equal opportunity employer, operated by Los Alamos National Security, LLC, for the National Nuclear Security Administration of the U.S. Department of Energy under contract DE-AC52-06NA25396. NR 40 TC 5 Z9 5 U1 0 U2 2 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0252-9602 J9 ACTA MATH SCI JI Acta Math. Sci. PD MAR PY 2010 VL 30 IS 2 BP 563 EP 594 PG 32 WC Mathematics SC Mathematics GA 575ZM UT WOS:000276112800011 ER PT J AU Schilling, O Latini, M AF Schilling, Oleg Latini, Marco TI HIGH-ORDER WENO SIMULATIONS OF THREE-DIMENSIONAL RESHOCKED RICHTMYER-MESHKOV INSTABILITY TO LATE TIMES: DYNAMICS, DEPENDENCE ON INITIAL CONDITIONS, AND COMPARISONS TO EXPERIMENTAL DATA SO ACTA MATHEMATICA SCIENTIA LA English DT Article DE Richtmyer-Meshkov instability; reshock; mixing properties; weighted essentially nonoscillatory (WENO) method ID LARGE-EDDY SIMULATION; ESSENTIALLY NONOSCILLATORY SCHEMES; RAYLEIGH-TAYLOR INSTABILITY; AIR/SF6 INTERFACE; HIGH-RESOLUTION AB The dynamics of the reshocked multi-mode Richtmyer-Meshkov instability is investigated using 513 x 257(2) three-dimensional ninth-order weighted essentially nonoscillatory shock-capturing simulations. A two-mode initial perturbation with superposed random noise is used to model the Mach 1.5 air/SF(6) Vetter-Sturtevant shock tube experiment. The mass fraction and enstrophy isosurfaces, and density cross-sections are utilized to show the detailed flow structure before, during, and after reshock. It is shown that the mixing layer growth agrees well with the experimentally measured growth rate before and after reshock. The post-reshock growth rate is also in good agreement with the prediction of the Mikaelian model. A parametric study of the sensitivity of the layer growth to the choice of amplitudes of the short and long wavelength initial interfacial perturbation is also presented. Finally, the amplification effects of reshock are quantified using the evolution of the turbulent kinetic energy and turbulent enstrophy spectra, as well as the evolution of the baroclinic enstrophy production, buoyancy production, and shear production terms in the enstrophy and turbulent kinetic transport equations. C1 [Schilling, Oleg] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Latini, Marco] CALTECH, Pasadena, CA 91125 USA. RP Schilling, O (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM schilling1@llnl.gov; Latinim@cna.org OI Schilling, Oleg/0000-0002-0623-2940 NR 30 TC 35 Z9 39 U1 2 U2 12 PU ELSEVIER SCIENCE INC PI NEW YORK PA 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA SN 0252-9602 J9 ACTA MATH SCI JI Acta Math. Sci. PD MAR PY 2010 VL 30 IS 2 BP 595 EP 620 PG 26 WC Mathematics SC Mathematics GA 575ZM UT WOS:000276112800012 ER PT J AU Lo, WC Sposito, G Majer, E Yeh, CL AF Lo, Wei-Cheng Sposito, Garrison Majer, Ernest Yeh, Chao-Lung TI Motional modes of dilatational waves in elastic porous media containing two immiscible fluids SO ADVANCES IN WATER RESOURCES LA English DT Article DE Motional modes; Dilatational waves; Immiscible fluids ID HYDRAULIC CONDUCTIVITY; UNSATURATED SOILS; 2-PHASE FLUID; PROPAGATION AB Numerical simulations of dilatational waves in an elastic porous medium containing two immiscible viscous compressible fluids indicate that three types of wave occur, but the modes of dilatory motion corresponding to the three waves remain uncharacterized as functions of relative saturation. In the present paper, we address this problem by deriving normal coordinates for the three dilatational waves based on the general poroelasticity equations of Lo et al. 2005 [13]. The normal coordinates provide a theoretical foundation with which to characterize the motional modes in terms of six connecting coefficients that depend in a well defined way on inertial drag, viscous drag, and elasticity properties. Using numerical calculations of the connecting coefficients in the seismic frequency range for an unconsolidated sand containing water and air as a representative example relevant to hydrologic applications, we confirm that the dilatational wave whose speed is greatest corresponds to the motional mode in which the solid framework and the two pore fluids always move in phase, regardless of water saturation, in agreement with the classic Biot theory of the fast compressional wave in a water-saturated porous medium. For the wave which propagates second fastest, we show, apparently for the first time, that the solid framework moves in phase with water, but out of phase with air [Mode (III)], if the water saturation is below about 0.8, whereas the solid framework moves out of phase with both pore fluids [Mode (IV)] above this water saturation. The transition from Mode (III) to Mode (IV) corresponds to that between the capillarity-dominated region of the water retention curve and the region reflecting air-entry conditions near full water saturation. The second of the two modes corresponds exactly to the slow compressional wave in classic Biot theory, whereas the first mode is possible only in a two-fluid system undergoing capillary pressure fluctuations. For the wave which has the smallest speed, the dilatational mode is dominated by the motions of the two pore fluids, which are always out of phase, a result that is consistent with the proposition that this wave is caused by capillary pressure fluctuations. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Lo, Wei-Cheng; Yeh, Chao-Lung] Natl Cheng Kung Univ, Dept Hydraul & Ocean Engn, Tainan 701, Taiwan. [Sposito, Garrison] Univ Calif Berkeley, Dept Civil & Environm Engn, Berkeley, CA 94720 USA. [Sposito, Garrison; Majer, Ernest] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Geophys, Div Earth Sci, Berkeley, CA 94720 USA. RP Lo, WC (reprint author), Natl Cheng Kung Univ, Dept Hydraul & Ocean Engn, Tainan 701, Taiwan. EM lowc@mail.ncku.edu.tw FU National Science Council, Taiwan [NSC98-2628-M-006-008]; National Cheng Kung University Landmark Program [R046] FX Gratitude is expressed to the National Science Council, Taiwan, for financial support under Contract No. NSC98-2628-M-006-008. Financial support for the research reported in this paper was also provided partially by the Laboratory Directed Research and Development Program at Lawrence Berkeley National Laboratory and partially by National Cheng Kung University Landmark Program (R046). NR 27 TC 10 Z9 10 U1 0 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0309-1708 EI 1872-9657 J9 ADV WATER RESOUR JI Adv. Water Resour. PD MAR PY 2010 VL 33 IS 3 BP 304 EP 311 DI 10.1016/j.advwatres.2009.12.007 PG 8 WC Water Resources SC Water Resources GA 572DJ UT WOS:000275807200006 ER PT J AU James, LK Swinton, SM Thelen, KD AF James, Laura K. Swinton, Scott M. Thelen, Kurt D. TI Profitability Analysis of Cellulosic Energy Crops Compared with Corn SO AGRONOMY JOURNAL LA English DT Article ID UNITED-STATES; BIOFUELS; MISCANTHUS; AGRICULTURE; SWITCHGRASS; FEEDSTOCK; ETHANOL; BIOMASS; FUTURE; YIELDS AB The expected profitability of six cellulosic feedstock crops is compared with two corn (Zea mays L.)-based systems under southern Great Lakes region conditions over a projected 10-yr period. At 2006-2009 costs and yields from literature, none would be more profitable than the corn-based systems. Comparative breakeven price analysis identifies the cellulosic feedstock price that would make crops equally profitable with continuous corn. Breakeven prices of cellulose are $110 to $130 Mg(-1) for poplar (Populus spp.), switchgrass (Panicum virgatum L.), and mixed grasses. For miscanthus (Miscanthus x giganteus J.M. Greef & Deuter ex Hodk. & Renvoize), breakeven cellulose prices are $200 Mg(-1) at current costs, but only $45 Mg(-1) if rhizome costs fall to near European levels, well within the range of temporary U.S. farm bill cost share levels for biomass harvest, transportation, and storage. Without targeted subsidies, native prairie and fallow old field systems would not be competitive with corn or the other four cellulosic crops reviewed at current yields and foreseeable prices. Comparative breakeven yields at a cellulose price of $60 Mg(-1) would require yield gains above benchmark literature values of 50% for switchgrass, 60% for poplar and mixed grasses, 140% for fallow old fields, 180% for native prairie, and 190% for miscanthus at current rhizome costs, but no added yield for miscanthus with rhizomes at plausible reduced cost. C1 [James, Laura K.; Swinton, Scott M.] Michigan State Univ, Dep Agr Food & Resource Econ, E Lansing, MI 48824 USA. [Thelen, Kurt D.] Michigan State Univ, Dep Crop & Soil Sci, E Lansing, MI 48824 USA. [James, Laura K.; Swinton, Scott M.; Thelen, Kurt D.] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. RP Swinton, SM (reprint author), Michigan State Univ, Dep Agr Food & Resource Econ, E Lansing, MI 48824 USA. FU DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science) [DE-FC02-07ER64494] FX This work was funded by the DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science DE-FC02-07ER64494). For data and comments. the authors wish to thank Lawrence Borton, Donald Dickman, John Ferris, Russell Freed, Greg Mahoney, Ray Miller, Dennis Pennington, Joseph Simmons, Vernon Stevens, and Eric Wittenberg NR 58 TC 67 Z9 67 U1 2 U2 31 PU AMER SOC AGRONOMY PI MADISON PA 677 S SEGOE RD, MADISON, WI 53711 USA SN 0002-1962 J9 AGRON J JI Agron. J. PD MAR-APR PY 2010 VL 102 IS 2 BP 675 EP 687 DI 10.2134/agronj2009.0289 PG 13 WC Agronomy SC Agriculture GA 576SJ UT WOS:000276168300038 ER PT J AU Bidlack, C Wellman, MP AF Bidlack, Clint Wellman, Michael P. TI Exceptional Data Quality Using Intelligent Matching and Retrieval SO AI MAGAZINE LA English DT Article ID RECORD LINKAGE AB Recent advances in enterprise web-based software have created a need for sophisticated yet user-friendly data-quality solutions. A new category of data-quality solutions that fill this need using intelligent matching and retrieval algorithms is discussed. Solutions are focused on customer and sales data and include real-time inexact search, batch processing, and data migration. Users are empowered to maintain higher quality data resulting in more efficient sales and marketing operations. Sales managers spend more time with customers and less time managing data. C1 [Bidlack, Clint] Univ Tennessee, Oak Ridge Natl Lab, Knoxville, TN 37996 USA. [Wellman, Michael P.] Univ Michigan, USAF, Wright Lab, Ann Arbor, MI 48109 USA. NR 15 TC 2 Z9 2 U1 0 U2 6 PU AMER ASSOC ARTIFICIAL INTELL PI MENLO PK PA 445 BURGESS DRIVE, MENLO PK, CA 94025-3496 USA SN 0738-4602 J9 AI MAG JI AI Mag. PD SPR PY 2010 VL 31 IS 1 BP 65 EP 73 PG 9 WC Computer Science, Artificial Intelligence SC Computer Science GA 576VM UT WOS:000276177700005 ER PT J AU Grahame, TJ Schlesinger, RB AF Grahame, Thomas J. Schlesinger, Richard B. TI Cardiovascular health and particulate vehicular emissions: a critical evaluation of the evidence SO AIR QUALITY ATMOSPHERE AND HEALTH LA English DT Article DE Vehicular; Diesel; Cardiovascular; Exposure; Ambient; Epidemiology; Air pollution AB A major public health goal is to determine linkages between specific pollution sources and adverse health outcomes. This paper provides an integrative evaluation of the database examining effects of vehicular emissions, such as black carbon (BC), carbonaceous gasses, and ultrafine PM, on cardiovascular (CV) morbidity and mortality. Less than a decade ago, few epidemiological studies had examined effects of traffic emissions specifically on these health endpoints. In 2002, the first of many studies emerged finding significantly higher risks of CV morbidity and mortality for people living in close proximity to major roadways, vs. those living further away. Abundant epidemiological studies now link exposure to vehicular emissions, characterized in many different ways, with CV health endpoints such as cardiopulmonary and ischemic heart disease and circulatory-disease-associated mortality; incidence of coronary artery disease; acute myocardial infarction; survival after heart failure; emergency CV hospital admissions; and markers of atherosclerosis. We identify numerous in vitro, in vivo, and human panel studies elucidating mechanisms which could explain many of these cardiovascular morbidity and mortality associations. These include: oxidative stress, inflammation, lipoperoxidation and atherosclerosis, change in heart rate variability (HRV), arrhythmias, ST-segment depression, and changes in vascular function (such as brachial arterial caliber and blood pressure). Panel studies with accurate exposure information, examining effects of ambient components of vehicular emissions on susceptible human subjects, appear to confirm these mechanisms. Together, this body of evidence supports biological mechanisms which can explain the various CV epidemiological findings. Based upon these studies, the research base suggests that vehicular emissions are a major environmental cause of cardiovascular mortality and morbidity in the United States. As a means to reduce the public health consequences of such emissions, it may be desirable to promulgate a black carbon (BC) PM2.5 standard under the National Ambient Air Quality Standards, which would apply to both on and off-road diesels. Two specific critical research needs are identified. One is to continue research on health effects of vehicular emissions, gaseous as well as particulate. The second is to utilize identical or nearly identical research designs in studies using accurate exposure metrics to determine whether other major PM pollutant sources and types may also underlie the specific health effects found in this evaluation for vehicular emissions. C1 [Grahame, Thomas J.] US DOE, Washington, DC 20585 USA. [Schlesinger, Richard B.] Pace Univ, Dept Biol & Hlth Sci, Dyson Coll Arts & Sci, New York, NY 10038 USA. RP Grahame, TJ (reprint author), US DOE, Washington, DC 20585 USA. EM Thomas.grahame@hq.doe.gov NR 124 TC 46 Z9 46 U1 3 U2 24 PU SPRINGER INTERNATIONAL PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 1873-9318 J9 AIR QUAL ATMOS HLTH JI Air Qual. Atmos. Health PD MAR PY 2010 VL 3 IS 1 BP 3 EP 27 DI 10.1007/s11869-009-0047-x PG 25 WC Environmental Sciences SC Environmental Sciences & Ecology GA V25HU UT WOS:000208469900002 ER PT J AU Shin, M Siffel, C Correa, A AF Shin, Mikyong Siffel, Csaba Correa, Adolfo TI Survival of Children With Mosaic Down Syndrome SO AMERICAN JOURNAL OF MEDICAL GENETICS PART A LA English DT Letter C1 [Shin, Mikyong; Siffel, Csaba; Correa, Adolfo] Ctr Dis Control & Prevent, Natl Ctr Birth Defects & Dev Disabil, Atlanta, GA 30333 USA. [Shin, Mikyong] ORISE, Oak Ridge, TN USA. [Siffel, Csaba] Comp Sci Corp, Atlanta, GA USA. RP Shin, M (reprint author), Ctr Dis Control & Prevent, Natl Ctr Birth Defects & Dev Disabil, 1600 Clifton Rd,MS E86, Atlanta, GA 30333 USA. EM mshin@cdc.gov NR 7 TC 21 Z9 21 U1 0 U2 4 PU WILEY-LISS PI HOBOKEN PA DIV JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1552-4825 J9 AM J MED GENET A JI Am. J. Med. Genet. A PD MAR PY 2010 VL 152A IS 3 BP 800 EP 801 DI 10.1002/ajmg.a.33295 PG 2 WC Genetics & Heredity SC Genetics & Heredity GA 576OV UT WOS:000276155200042 PM 20186777 ER PT J AU Urban, J Svec, F Frechet, JMJ AF Urban, Jiri Svec, Frantisek Frechet, Jean M. J. TI Efficient Separation of Small Molecules Using a Large Surface Area Hypercrosslinked Monolithic Polymer Capillary Column SO ANALYTICAL CHEMISTRY LA English DT Article ID PERFORMANCE LIQUID-CHROMATOGRAPHY; REVERSED-PHASE CHROMATOGRAPHY; SIZE-EXCLUSION CHROMATOGRAPHY; MACROPOROUS POLYMER; CONTINUOUS ROD; POLYSTYRENE; MINIREVIEW; SILICA; MEDIA; STATE AB Monolithic poly(styrene-co-vinylbenzyl chloride-co-divinylbenzene) precursor capillary columns have been prepared and then hypercrosslinked to afford a monolith containing an array of small pores. This monolithic column exhibited a surface area of 663 m(2)/g or more than 1 order of magnitude larger than measured for the precursor column. Because it contains mesopores, this monolithic column affords good separation of uracil and alkylbenzenes in isocratic mobile phase mode and also proved useful for separations in size exclusion mode. A column efficiency as high as 73 000 plates/m was determined for uracil. In contrast, the presence of mesopores in this hypercrosslinked monolithic column had a detrimental effect on die separation of proteins. C1 [Urban, Jiri; Svec, Frantisek; Frechet, Jean M. J.] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. [Svec, Frantisek; Frechet, Jean M. J.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. RP Frechet, JMJ (reprint author), Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA. EM frechet@berkeley.edu RI Urban, Jiri/D-1133-2014; OI Frechet, Jean /0000-0001-6419-0163 FU National Institute of Health [GM48364] FX Financial support by the National Institute of Health (Grant GM48364) is gratefully acknowledged. NR 30 TC 92 Z9 92 U1 10 U2 64 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 1 PY 2010 VL 82 IS 5 BP 1621 EP 1623 DI 10.1021/ac100008n PG 3 WC Chemistry, Analytical SC Chemistry GA 559QN UT WOS:000274841300014 PM 20141105 ER PT J AU Laskin, J Laskin, A Roach, PJ Slysz, GW Anderson, GA Nizkorodov, SA Bones, DL Nguyen, LQ AF Laskin, Julia Laskin, Alexander Roach, Patrick J. Slysz, Gordon W. Anderson, Gordon A. Nizkorodov, Sergey A. Bones, David L. Nguyen, Lucas Q. TI High-Resolution Desorption Electrospray Ionization Mass Spectrometry for Chemical Characterization of Organic Aerosols SO ANALYTICAL CHEMISTRY LA English DT Article ID BIOMASS BURNING AEROSOLS; MOLECULAR CHARACTERIZATION; AMBIENT CONDITIONS; ATMOSPHERIC AEROSOL; SOFTWARE PACKAGE; RAPID ANALYSIS; PARTICLES; IDENTIFICATION; OLIGOMERS; SAMPLES AB Characterization of the chemical composition and chemical transformations of secondary organic aerosol (SOA) is both a major challenge and the area of greatest uncertainty in current aerosol research. This study presents the first application of desorption electrospray ionization combined with high-resolution mass spectrometry (DESI-MS) for detailed chemical characterization and studies of chemical aging of organic aerosol (OA) samples collected on Teflon substrates. DESI-MS offers unique advantages both for detailed characterization of chemically labile components in OA that cannot be detected using traditional electrospray ionization mass spectrometry (ESI-MS) and for studying chemical aging of OA. DESI-MS enables rapid characterization of OA samples collected oil substrates by eliminating the sample preparation stage. In addition, it enables detection and structural characterization of chemically labile molecules in OA samples by minimizing the residence time of analyte in the solvent In this study, DESI-MS and tandem mass spectrometry experiments (MS/MS) were used to examine chemical aging of SOA produced by the ozonolysis of limonene (LSOA) in the presence of gaseous ammonia. Exposure of LSOA to ammonia resulted in measurable changes in the optical properties of the sample observed using ultraviolet (UV)-visible spectroscopy. High-resolution DESI-MS analysis demonstrated that chemical aging results in formation of highly conjugated nitrogen-containing species that are most likely responsible for light-absorbing properties of the aged LSOA Detailed analysis of the experimental data allowed us to identify several key aging reactions, including the transformation of carbonyls to imines, intramolecular dimerization of imines with other carbonyl compounds in SOA, and intermolecular cyclization of imines. This study presents all important step toward understanding the formation of light-absorbing OA (brown carbon) in the atmosphere. C1 [Laskin, Julia; Roach, Patrick J.] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA. [Laskin, Alexander] Pacific NW Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA 99352 USA. [Slysz, Gordon W.; Anderson, Gordon A.] Pacific NW Natl Lab, Div Biol Sci, Richland, WA 99352 USA. [Nizkorodov, Sergey A.; Bones, David L.; Nguyen, Lucas Q.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. RP Laskin, J (reprint author), Pacific NW Natl Lab, Div Chem & Mat Sci, POB 999,MSIN K8-88, Richland, WA 99352 USA. EM Julia.Laskin@pnl.gov; Alexander.Laskin@pnl.gov RI Roach, Patrick/G-5615-2012; Laskin, Julia/H-9974-2012; Laskin, Alexander/I-2574-2012; Nizkorodov, Sergey/I-4120-2014; OI Laskin, Julia/0000-0002-4533-9644; Laskin, Alexander/0000-0002-7836-8417; Nizkorodov, Sergey/0000-0003-0891-0052; Bones, David/0000-0003-1394-023X FU W. R. Wiley Environmental Molecular Sciences Laboratory (EMSL); U.S. Department of Energy's Office of Biological and Environmental Research [ATM-0831518]; NSF [CHE-0909227] FX The research described in this manuscript was supported by the intramural research and development program of the W. R. Wiley Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the U.S. Department of Energy's Office of Biological and Environmental Research. All experiments were performed at EMSL, which is located at Pacific Northwest National Laboratory (PNNL). PNNL is operated by Battelle for the U.S. Department of Energy. P.J.R. acknowledges the support from the Chemical Sciences Division, Office of Basic Energy Sciences of the US DOE. S.A.N. acknowledges support by NSF Grant No. ATM-0831518. D.B, was Supported by NSF Grant No. CHE-0909227. NR 84 TC 79 Z9 81 U1 14 U2 103 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 1 PY 2010 VL 82 IS 5 BP 2048 EP 2058 DI 10.1021/ac902801f PG 11 WC Chemistry, Analytical SC Chemistry GA 559QN UT WOS:000274841300067 PM 20146449 ER PT J AU Read, DH Martin, JE AF Read, Douglas H. Martin, James E. TI Strain-Tunable Chemiresistor SO ANALYTICAL CHEMISTRY LA English DT Article ID POLYMER COMPOSITES; RESISTIVITY AB We have developed a resistance-based chemical sensor (chemiresistor) for volatile organic compounds whose sensitivity can be reversibly increased over a range of nearly 2 decades by the application of tensile strain. This polymer-based sensor is comprised of Au-plated magnetic particles structured into conducting chains by the application of a magnetic field during the curing of the prepolymer resin. The resistance of this field-structured composite increases when an analyte vapor swells the polymer and reduces the contact pressure between particles. We have found that applying a tensile strain increases both the sensor resistance and sensitivity, as defined by its relative resistance change. This increase in sensitivity is a smooth, continuous function of the applied strain, and the effect is fully reversible, Sensitivity tuning enables the response curve of the sensor to be dynamically optimized for sensing analytes over a wide concentration range. C1 [Read, Douglas H.; Martin, James E.] Sandia Natl Labs, Dept Nanomat Sci, Albuquerque, NM 87185 USA. RP Read, DH (reprint author), Sandia Natl Labs, Dept Nanomat Sci, POB 5800, Albuquerque, NM 87185 USA. EM dhread@sandia.gov FU Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy; Department of Energy's National Nuclear Security Administration [DE-AC04-94AI-85000] FX This work is supported (or partially supported as the case may be) by the Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. Department of Energy. Sandia National Laboratories is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AI-85000. NR 13 TC 8 Z9 8 U1 0 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD MAR 1 PY 2010 VL 82 IS 5 BP 2150 EP 2154 DI 10.1021/ac902897e PG 5 WC Chemistry, Analytical SC Chemistry GA 559QN UT WOS:000274841300083 PM 20146452 ER PT J AU He, ZL Zhou, A Baidoo, E He, Q Joachimiak, MP Benke, P Phan, R Mukhopadhyay, A Hemme, CL Huang, K Alm, EJ Fields, MW Wall, J Stahl, D Hazen, TC Keasling, JD Arkin, AP Zhou, J AF He, Zhili Zhou, Aifen Baidoo, Edward He, Qiang Joachimiak, Marcin P. Benke, Peter Phan, Richard Mukhopadhyay, Aindrila Hemme, Christopher L. Huang, Katherine Alm, Eric J. Fields, Matthew W. Wall, Judy Stahl, David Hazen, Terry C. Keasling, Jay D. Arkin, Adam P. Zhou, Jizhong TI Global Transcriptional, Physiological, and Metabolite Analyses of the Responses of Desulfovibrio vulgaris Hildenborough to Salt Adaptation SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID 2-COMPONENT SIGNAL-TRANSDUCTION; SULFATE-REDUCING BACTERIA; METHANOSARCINA-MAZEI GO1; GENERAL STRESS-RESPONSE; ESCHERICHIA-COLI; BACILLUS-SUBTILIS; OSMOTIC-STRESS; HIGH-SALINITY; VULGATIS HILDENBOROUGH; SINORHIZOBIUM-MELILOTI AB The response of Desulfovibrio vulgaris Hildenborough to salt adaptation (long-term NaCl exposure) was examined by performing physiological, global transcriptional, and metabolite analyses. Salt adaptation was reflected by increased expression of genes involved in amino acid biosynthesis and transport, electron transfer, hydrogen oxidation, and general stress responses (e.g., heat shock proteins, phage shock proteins, and oxidative stress response proteins). The expression of genes involved in carbon metabolism, cell growth, and phage structures was decreased. Transcriptome profiles of D. vulgaris responses to salt adaptation were compared with transcriptome profiles of D. vulgaris responses to salt shock (short-term NaCl exposure). Metabolite assays showed that glutamate and alanine accumulated under salt adaptation conditions, suggesting that these amino acids may be used as osmoprotectants in D. vulgaris. Addition of amino acids (glutamate, alanine, and tryptophan) or yeast extract to the growth medium relieved salt-related growth inhibition. A conceptual model that links the observed results to currently available knowledge is proposed to increase our understanding of the mechanisms of D. vulgaris adaptation to elevated NaCl levels. C1 [He, Zhili; Zhou, Aifen; Hemme, Christopher L.; Zhou, Jizhong] Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA. [He, Zhili; Zhou, Aifen; Hemme, Christopher L.; Zhou, Jizhong] Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA. [Baidoo, Edward; Joachimiak, Marcin P.; Benke, Peter; Phan, Richard; Mukhopadhyay, Aindrila; Alm, Eric J.; Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [He, Qiang; Arkin, Adam P.] Univ Tennessee, Dept Civil & Environm Engn, Knoxville, TN USA. [Fields, Matthew W.] Montana State Univ, Ctr Biofilm Engn, Bozeman, MT 59717 USA. [Fields, Matthew W.] Montana State Univ, Dept Microbiol, Bozeman, MT 59717 USA. [Wall, Judy] Univ Missouri, Div Biochem, Columbia, MO USA. [Wall, Judy] Univ Missouri, Dept Mol Microbiol & Immunol, Columbia, MO USA. [Stahl, David] Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98195 USA. [Hazen, Terry C.] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Keasling, Jay D.; Arkin, Adam P.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Keasling, Jay D.; Arkin, Adam P.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. RP Zhou, J (reprint author), Univ Oklahoma, Inst Environm Genom, Norman, OK 73019 USA. EM jzhou@ou.edu RI He, Qiang/G-9061-2011; He, Zhili/C-2879-2012; Keasling, Jay/J-9162-2012; Arkin, Adam/A-6751-2008; Hazen, Terry/C-1076-2012 OI He, Qiang/0000-0002-7155-6474; Keasling, Jay/0000-0003-4170-6088; Arkin, Adam/0000-0002-4999-2931; Hazen, Terry/0000-0002-2536-9993 FU U.S. Department of Energy FX This work was supported by the U.S. Department of Energy under the Genomics: GTL Program through the Virtual Institute of Microbial Stress and Survival (http://vimss.lbl.gov). NR 64 TC 25 Z9 26 U1 1 U2 12 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD MAR PY 2010 VL 76 IS 5 BP 1574 EP 1586 DI 10.1128/AEM.02141-09 PG 13 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA 559VJ UT WOS:000274855800032 PM 20038696 ER PT J AU Rutherford, BJ Dahl, RH Price, RE Szmidt, HL Benke, PI Mukhopadhyay, A Keasling, JD AF Rutherford, Becky J. Dahl, Robert H. Price, Richard E. Szmidt, Heather L. Benke, Peter I. Mukhopadhyay, Aindrila Keasling, Jay D. TI Functional Genomic Study of Exogenous n-Butanol Stress in Escherichia coli SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID ORGANIC-SOLVENT TOLERANCE; INDUCIBLE ASR GENE; CLOSTRIDIUM-ACETOBUTYLICUM; SYSTEMS; MEMBRANE; OVEREXPRESSION; EXPRESSION; ALCOHOLS; BACTERIA; MICROORGANISMS AB n-Butanol has been proposed as an alternative biofuel to ethanol, and several industrially used microbes, including Escherichia coli, have been engineered to produce it. Unfortunately, n-butanol is more toxic than ethanol to these organisms. To understand the basis for its toxicity, cell-wide studies were conducted at the transcript, protein, and metabolite levels to obtain a global view of the n-butanol stress response. Analysis of the data indicates that n-butanol stress has components common to other stress responses, including perturbation of respiratory functions (nuo and cyo operons), oxidative stress (sodA, sodC, and yqhD), heat shock and cell envelope stress (rpoE, clpB, htpG, cpxR, and cpxP), and metabolite transport and biosynthesis (malE and opp operon). Assays using fluorescent dyes indicated a large increase in reactive oxygen species during n-butanol stress, confirming observations from the microarray and proteomics measurements. Mutant strains with mutations in several genes whose products changed most dramatically during n-butanol stress were examined for increased sensitivity to n-butanol. Results from these analyses allowed identification of key genes that were recruited to alleviate oxidative stress, protein misfolding, and other causes of growth defects. Cellular engineering based on these cues may assist in developing a high-titer, n-butanol-producing host. C1 [Szmidt, Heather L.; Benke, Peter I.; Mukhopadhyay, Aindrila; Keasling, Jay D.] Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, Berkeley, CA 94720 USA. [Rutherford, Becky J.; Dahl, Robert H.; Keasling, Jay D.] Univ Calif Berkeley, Dept Chem Engn, Berkeley, CA 94720 USA. [Rutherford, Becky J.; Dahl, Robert H.; Szmidt, Heather L.; Benke, Peter I.; Mukhopadhyay, Aindrila; Keasling, Jay D.] Joint BioEnergy Inst, Emeryville, CA 94608 USA. [Keasling, Jay D.] Univ Calif Berkeley, Dept Bioengn, Berkeley, CA 94720 USA. [Price, Richard E.] Univ Calif Berkeley, Dept Mol & Cellular Biol, Berkeley, CA 94720 USA. RP Mukhopadhyay, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Phys Biosci Div, 1 Cyclotron Rd,MS 978-4121, Berkeley, CA 94720 USA. EM amukhopadhyay@lbl.gov RI Keasling, Jay/J-9162-2012 OI Keasling, Jay/0000-0003-4170-6088 FU U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research [DE-AC02-05CH11231] FX This work was part of the Joint BioEnergy Institute supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, through contract DE-AC02-05CH11231 between Lawrence Berkeley National Laboratory and the U. S. Department of Energy. NR 50 TC 116 Z9 120 U1 6 U2 43 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD MAR PY 2010 VL 76 IS 6 BP 1935 EP 1945 DI 10.1128/AEM.02323-09 PG 11 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA 564DQ UT WOS:000275193900026 PM 20118358 ER PT J AU Ndung'u, K Friedrich, S Gonzalez, AR Flegal, AR AF Ndung'u, Kuria Friedrich, Stephan Gonzalez, Ana R. Flegal, A. Russell TI Chromium oxidation by manganese (hydr)oxides in a California aquifer SO APPLIED GEOCHEMISTRY LA English DT Article ID HEXAVALENT CHROMIUM; SPECTROSCOPY; WATER; FIELD AB There are increasing concerns with elevated levels of Cr(VI) in the environment because It IS a Strong oxidant. corrosive, and carcinogenic The concerns extend to the presence of Cr(VI) in many aquifers in California and elsewhere. where relatively high levels have been attributed to both industrial pollution and natural processes The authors have, therefore, determined if natural redox processes contribute to the presence of high Cr(VI) concentrations (6-36 mu g L(-1)) in all aquifer in central California relative to non-detectable concentrations (<0.1 mu g L(-1)) in all adjacent aquifer Specifically, the distribution and the redox speciation of dissolved (<0.45 mu m) Cr have been compared with those of particulate Mn and Fe oxy-hydioxides in sediments, using X-ray absorption spectroscopy at the Mn and Fe L-edges The analyses show a correlation between the presence of dissolved Cr(VI) and Mn (hydr)oxide minerals, which are the only common, naturally occurring minerals known to oxidize Cr(Ill) in laboratory experiments This covariance substantiates the results of those experiments and previous field studies that indicate natural oxidation mechanisms might account for the relatively high levels of Cr(VI) in the study site. as well as for elevated concentrations in other aquifers with similar biogeochemical conditions (C) 2009 Elsevier Ltd All rights reserved C1 [Ndung'u, Kuria] Stockholm Univ, Dept Appl Environm Sci ITM, S-10691 Stockholm, Sweden. [Friedrich, Stephan] Lawrence Livermore Natl Lab, Adv Detector Grp, Livermore, CA 94550 USA. [Gonzalez, Ana R.] AMEC Geomatrix Inc, Newport Beach, CA 92663 USA. [Flegal, A. Russell] Univ Calif Santa Cruz, WIGS, Santa Cruz, CA 95064 USA. RP Ndung'u, K (reprint author), Stockholm Univ, Dept Appl Environm Sci ITM, S-10691 Stockholm, Sweden. RI ndungu, kuria/A-1639-2010 OI ndungu, kuria/0000-0001-9777-9345 FU Department of Energy, Office of Biological and Environmental Research [DE-AC52-07NA27344]; University of California Campus-Lab Exchange [CLE-03-32]; UC Toxic Substances Research and Teaching Program FX We gratefully acknowledge funding from the Department of Energy, Office of Biological and Environmental Research, the University of California Campus-Lab Exchange program under Grant CLE-03-32, and the UC Toxic Substances Research and Teaching Program Financial support for A R G. was provided by a Eugene Cota-Robles graduate student fellowship. This work was performed under the auspices of the US Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. NR 22 TC 12 Z9 12 U1 4 U2 26 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0883-2927 J9 APPL GEOCHEM JI Appl. Geochem. PD MAR PY 2010 VL 25 IS 3 BP 377 EP 381 DI 10.1016/j.apgeochem.2009.12.004 PG 5 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 569EV UT WOS:000275580200005 ER PT J AU Tan, H Zhang, GX Heaney, PJ Webb, SM Burgos, WD AF Tan, Hui Zhang, Gengxin Heaney, Peter J. Webb, Samuel M. Burgos, William D. TI Characterization of manganese oxide precipitates from Appalachian coal mine drainage treatment systems SO APPLIED GEOCHEMISTRY LA English DT Article ID MARINE BACILLUS SP.; X-RAY-DIFFRACTION; SP STRAIN SG-1; MN(II) OXIDATION; PINAL-CREEK; MN OXIDES; SORPTION; REMOVAL; CHEMISTRY; KINETICS AB The removal of Mn(II) from coal mine drainage (CMD) by chemical addition/active treatment can significantly increase treatment costs. Passive treatment for Mn removal involves promotion of biological oxidative precipitation of manganese oxides (MnO(x)) Manganese(II) removal was studied in three passive treatment systems in western Pennsylvania that differed based on their influent Mn(II) concentrations (20-150 mg/L). system construction (+/- inoculation with patented Mn(II)-oxidizing bacteria), and bed materials (limestone vs. sandstone). Manganese(II) removal occurred at pH values as low as 5 0 and temperatures as low as 2 degrees C, but was enhanced at circumneutral pH and warmer temperatures. Trace metals such as Zn, Ni and Co were removed effectively, in most cases preferentially, into the MnO(x) precipitates. Based on synchrotron radiation X-ray diffraction and Mn K-edge extended X-ray absorption fine structure spectroscopy, the predominant Mn oxides at all sites were poorly crystalline hexagonal birnessite, triclinic birnessite and todorokite The surface morphology of the MnO(x) precipitates from all sites was coarse and "sponge-like" composed of rim-sized lathes and thin sheets. Based on scanning electron microscopy (SEM). MnO(x) precipitates were found in close proximity to both prokaryotic and eukaryotic organisms. The greatest removal efficiency of Mn(II) occurred at the one site with a higher pH in the bed and a higher influent total organic C (TOC) concentration (provided by an upstream wetland) Biological oxidation of Mn(II) driven by heterotrophic activity was most likely the predominant Mn removal mechanism in these systems. Influent water chemistry and Mn(II) oxidation kinetics affected the relative distribution of MnO(x) mineral assemblages in CMD treatment systems. (C) 2009 Elsevier Ltd All rights reserved. C1 [Tan, Hui; Zhang, Gengxin; Burgos, William D.] Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA. [Heaney, Peter J.] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA. [Webb, Samuel M.] Stanford Synchrotron Radiat Lab, Menlo Pk, CA USA. RP Burgos, WD (reprint author), Penn State Univ, Dept Civil & Environm Engn, 212 Sackett Bldg, University Pk, PA 16802 USA. RI Webb, Samuel/D-4778-2009 OI Webb, Samuel/0000-0003-1188-0464 FU National Science Foundation [CHE-0431328, EAR0745374]; Office of Surface Mining [S07AP12478]; US Department of Energy [DE-AC02-98CH10886] FX This research was Supported by the National Science Foundation through Grant No. CHE-0431328 and Grant No. EAR0745374, and by the Office of Surface Mining Under Cooperative Agreement S07AP12478 A portion of this research was carried out at the National Synchrotron Light Source, Brookhaven National Laboratory, which is Supported by the US Department of Energy, Division of Materials Sciences and Division of Chemical Sciences, under Contract No DE-AC02-98CH10886. The SSRL beamline is supported by the US Department of Energy, Office of Biological and Environmental Research. NR 51 TC 25 Z9 26 U1 3 U2 32 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0883-2927 J9 APPL GEOCHEM JI Appl. Geochem. PD MAR PY 2010 VL 25 IS 3 BP 389 EP 399 DI 10.1016/j.apgeochem.2009.12.006 PG 11 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA 569EV UT WOS:000275580200007 ER PT J AU Utschig, LM Dalosto, SD Thurnauer, MC Poluektov, OG AF Utschig, L. M. Dalosto, S. D. Thurnauer, M. C. Poluektov, Oleg G. TI The Surface Metal Site in Blc. viridis Photosynthetic Bacterial Reaction Centers: Cu2+ as a Probe of Structure, Location, and Flexibility SO APPLIED MAGNETIC RESONANCE LA English DT Article ID RHODOBACTER-SPHAEROIDES R-26; ELECTRON-TRANSFER; RHODOPSEUDOMONAS-VIRIDIS; PROTON-TRANSFER; NEUTRON-SCATTERING; COPPER PROTEINS; LOW-TEMPERATURE; 3A RESOLUTION; WILD-TYPE; EPR AB Metal ion binding to a surface site on photosynthetic reaction centers (RCs) modulates light-induced electron and proton transfer events in the RC. Whereas many studies have elucidated aspects of metal ion modulation events in Rhodobacter sphaeroides RCs, much less is understood about the surface site in Blastochloris viridis (Blc. viridis) RCs. Interestingly, electron paramagnetic resonance studies revealed two spectroscopically distinct Cu2+ surface site environments in Blc. viridis RCs. Herein, Cu2+ has been used to spectroscopically probe the structure of these Cu2+ site(s) in response to freezing conditions, temperature, and charge separation. One Cu2+ environment in Blc. viridis RCs, termed Cu-A, exhibits temperature-dependent conformational flexibility. Different conformation states of the Cu (A) (2+) site are trapped when the RC is frozen in the dark either by fast-freeze or slow-freeze procedure. The second Cu2+ environment, termed Cu-B, is structurally invariant to different freezing conditions and shows resolved hyperfine coupling to three nitrogen atoms. Cu2+ is most likely binding at the same location on the RC, but in different coordination environments which may reflect two distinct conformational states of the isolated Blc. viridis RC protein. C1 [Utschig, L. M.; Dalosto, S. D.; Thurnauer, M. C.; Poluektov, Oleg G.] Argonne Natl Lab, Chem Sci & Engn Div D 200, Argonne, IL 60439 USA. RP Poluektov, OG (reprint author), Argonne Natl Lab, Chem Sci & Engn Div D 200, 9700 S Cass Ave, Argonne, IL 60439 USA. EM oleg@anl.gov FU US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences [DE-AC02-06CH11357] FX We thank A. Wagner, T. Rajh, and S. Schlesselman for technical assistance. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences, under Contract DE-AC02-06CH11357. NR 43 TC 0 Z9 0 U1 1 U2 3 PU SPRINGER WIEN PI WIEN PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 WIEN, AUSTRIA SN 0937-9347 J9 APPL MAGN RESON JI Appl. Magn. Reson. PD MAR PY 2010 VL 38 IS 1 BP 1 EP 17 DI 10.1007/s00723-009-0116-1 PG 17 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA 559RQ UT WOS:000274844300001 ER PT J AU Thrash, JC Pollock, J Torok, T Coates, JD AF Thrash, J. Cameron Pollock, Jarrod Torok, Tamas Coates, John D. TI Description of the novel perchlorate-reducing bacteria Dechlorobacter hydrogenophilus gen. nov., sp nov and Propionivibrio militaris, sp nov. SO APPLIED MICROBIOLOGY AND BIOTECHNOLOGY LA English DT Article ID (PER)CHLORATE-REDUCING BACTERIA; PROPIONIBACTER-PELOPHILUS; TAXONOMIC DESCRIPTION; PHYLOGENETIC ANALYSIS; OXIDIZING BACTERIUM; HIGH-THROUGHPUT; UNITED-STATES; HIGH-PLAINS; REDUCTION; DECHLOROMONAS AB Novel dissimilatory perchlorate-reducing bacteria (DPRB) were isolated from enrichments conducted under conditions different from those of all previously described DPRB. Strain LT-1(T) was enriched using medium buffered at pH 6.6 with 2-(N-morpholino)ethanesulfonic acid (MES) and had only 95% 16S rRNA gene identity with its closest relative, Azonexus caeni. Strain MP(T) was enriched in the cathodic chamber of a perchlorate-reducing bioelectrical reactor (BER) and together with an additional strain, CR (99% 16S rRNA gene identity), had 97% 16S rRNA gene identity with Propionivibrio limicola. The use of perchlorate and other electron acceptors distinguished strains MP(T) and CR from P. limicola physiologically. Strain LT-1(T) had differences in electron donor utilization and optimum growth temperatures from A. caeni. Strains LT-1(T) and MP(T) are the first DPRB to be described in the Betaproteobacteria outside of the Dechloromonas and Azospira genera. On the basis of phylogenetic and physiological features, strain LT-1(T) represents a novel genus in the Rhodocyclaceae; strain MP(T) represents a novel species within the genus Propionivibrio. The names Dechlorobacter hydrogenophilus gen. nov., sp. nov and Propionivibrio militaris sp. nov. are proposed. C1 [Torok, Tamas; Coates, John D.] Ernest Orlando Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. [Thrash, J. Cameron; Pollock, Jarrod; Coates, John D.] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA. RP Coates, JD (reprint author), Ernest Orlando Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA. EM jdcoates@berkeley.edu RI Pollock, Jarrod/F-4925-2010; OI Thrash, Cameron/0000-0003-0896-9986 FU US Department of Defense SERDP program [DACA72-00-C-0016] FX Support for this research to JDC was from grant DACA72-00-C-0016 from the US Department of Defense SERDP program. NR 52 TC 22 Z9 23 U1 2 U2 19 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0175-7598 J9 APPL MICROBIOL BIOT JI Appl. Microbiol. Biotechnol. PD MAR PY 2010 VL 86 IS 1 BP 335 EP 343 DI 10.1007/s00253-009-2336-6 PG 9 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 555VC UT WOS:000274543200034 PM 19921177 ER PT J AU Zhang, XZ Zhang, ZM Zhu, ZG Sathitsuksanoh, N Yang, YF Zhang, YHP AF Zhang, Xiao-Zhou Zhang, Zuoming Zhu, Zhiguang Sathitsuksanoh, Noppadon Yang, Yunfeng Zhang, Y. -H. Percival TI The noncellulosomal family 48 cellobiohydrolase from Clostridium phytofermentans ISDg: heterologous expression, characterization, and processivity SO APPLIED MICROBIOLOGY AND BIOTECHNOLOGY LA English DT Article DE Clostridium phytofermentans; Cellobiohydrolase; Family 48 exoglucanase; Bacillus subtilis; Characterization; Processivity ID BACILLUS-SUBTILIS WB800; ENZYMATIC-HYDROLYSIS; TRICHODERMA-REESEI; SUPRAMOLECULAR STRUCTURE; CRYSTALLINE CELLULOSE; ENDOCELLULASE CELF; THERMOCELLUM CELS; LIGNOCELLULOSE; CELLULOLYTICUM; CELLULOVORANS AB Family 48 glycoside hydrolases (cellobiohydrolases) are among the most important cellulase components for crystalline cellulose hydrolysis mediated by cellulolytic bacteria. Open reading frame (Cphy_3368) of Clostridium phytofermentans ISDg encodes a putative family 48 glycoside hydrolase (CpCel48) with a family 3 cellulose-binding module. CpCel48 was successfully expressed as two soluble intracellular forms with or without a C-terminal His-tag in Escherichia coli and as a secretory active form in Bacillus subtilis. It was found that calcium ion enhanced activity and thermostability of the enzyme. CpCel48 had high activities of 15.1 U mu mol(-1) on Avicel and 35.9 U mu mol(-1) on regenerated amorphous cellulose (RAC) with cellobiose as a main product and cellotriose and cellotetraose as by-products. By contrast, it had very weak activities on soluble cellulose derivatives (e.g., carboxymethyl cellulose (CMC)) and did not significantly decrease the viscosity of the CMC solution. Cellotetraose was the smallest oligosaccharide substrate for CpCel48. Since processivity is a key characteristic for cellobiohydrolases, the new initial false/right attack model was developed for estimation of processivity by considering the enzyme's substrate specificity, the crystalline structure of homologous Cel48 enzymes, and the configuration of cellulose chains. The processivities of CpCel48 on Avicel and RAC were estimated to be similar to 3.5 and 6.0, respectively. Heterologous expression of secretory active cellobiohydrolase in B. subtilis is an important step for developing recombinant cellulolytic B. subtilis strains for low-cost production of advanced biofuels from cellulosic materials in a single step. C1 [Yang, Yunfeng; Zhang, Y. -H. Percival] DOE BioEnergy Sci Ctr BESC, Oak Ridge, TN 37831 USA. [Yang, Yunfeng] Oak Ridge Natl Lab, Biosci Div, Oak Ridge, TN 37831 USA. [Sathitsuksanoh, Noppadon; Zhang, Y. -H. Percival] Virginia Polytech Inst & State Univ, ICTAS, Blacksburg, VA 24061 USA. [Zhang, Zuoming] Jilin Univ, Minist Educ, Key Lab Mol Enzymol & Engn, Changchun 130023, Peoples R China. [Zhang, Xiao-Zhou; Zhang, Zuoming; Zhu, Zhiguang; Sathitsuksanoh, Noppadon; Zhang, Y. -H. Percival] Virginia Polytech Inst & State Univ, Dept Biol Syst Engn, Blacksburg, VA 24061 USA. RP Zhang, YHP (reprint author), DOE BioEnergy Sci Ctr BESC, Oak Ridge, TN 37831 USA. EM biofuels@vt.edu RI ZHANG, XIAOZHOU/A-2706-2009; Yang, Yunfeng/H-9853-2013; sathitsuksanoh, noppadon/O-6305-2014; Zhu, Zhiguang/I-3936-2016 OI Yang, Yunfeng/0000-0001-8274-6196; sathitsuksanoh, noppadon/0000-0003-1521-9155; FU DOE BioEnergy Science Center (BESC); Office of Biological and Environmental Research; USDA Bioprocessing and Biodesign Center; DuPont Young Professor Award; China Scholar Council; ICTAS FX This work was supported mainly by the DOE BioEnergy Science Center (BESC). The BioEnergy Science Center is a U.S. Department of Energy Bioenergy Research Center supported by the Office of Biological and Environmental Research in the DOE Office of Science. This work was also partially supported by the USDA Bioprocessing and Biodesign Center and DuPont Young Professor Award. Zuoming Zhang was partially supported by the China Scholar Council. Noppadon Sathitsuksanoh was partially supported by the ICTAS scholar program. NR 56 TC 24 Z9 24 U1 1 U2 21 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0175-7598 EI 1432-0614 J9 APPL MICROBIOL BIOT JI Appl. Microbiol. Biotechnol. PD MAR PY 2010 VL 86 IS 2 BP 525 EP 533 DI 10.1007/s00253-009-2231-1 PG 9 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA 557YW UT WOS:000274707600012 PM 19830421 ER PT J AU Yan, XQ Tajima, T Hegelich, M Yin, L Habs, D AF Yan, X. Q. Tajima, T. Hegelich, M. Yin, L. Habs, D. TI Theory of laser ion acceleration from a foil target of nanometer thickness SO APPLIED PHYSICS B-LASERS AND OPTICS LA English DT Article ID ELECTRON-BEAM; PROTON-BEAMS; PLASMA; DRIVEN; PULSES; SOLIDS AB A theory for ion acceleration by ultrashort laser pulses is presented to evaluate the maximum ion energy in the interaction of ultrahigh contrast (UHC) intense laser pulses with a nanometer-scale foil. In this regime, the ion energy may be directly related to the laser intensity and subsequent electron dynamics. This leads to a simple analytical expression for the ion energy gain under the laser irradiation of thin targets. Significantly higher energies for thin targets than for thicker targets are predicted. The theory is concretized with a view to compare with the results and their details of recent experiments. C1 [Yan, X. Q.; Habs, D.] Max Planck Inst Quantum Opt, D-85748 Garching, Germany. [Yan, X. Q.] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China. [Yan, X. Q.] Peking Univ, Ctr Appl Phys & Technol, Beijing 100871, Peoples R China. [Tajima, T.] JAEA, Photomed Res Ctr, Kizu, Kyoto 6190215, Japan. [Tajima, T.; Hegelich, M.; Habs, D.] LMU Muenchen, Fak Phys, D-85748 Garching, Germany. [Hegelich, M.; Yin, L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Yan, XQ (reprint author), Max Planck Inst Quantum Opt, D-85748 Garching, Germany. EM xyan@mpq.mpg.de RI Hegelich, Bjorn/J-2689-2013; OI Yin, Lin/0000-0002-8978-5320 NR 39 TC 18 Z9 19 U1 1 U2 13 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0946-2171 J9 APPL PHYS B-LASERS O JI Appl. Phys. B-Lasers Opt. PD MAR PY 2010 VL 98 IS 4 SI SI BP 711 EP 721 DI 10.1007/s00340-009-3707-5 PG 11 WC Optics; Physics, Applied SC Optics; Physics GA 557QQ UT WOS:000274685500017 ER PT J AU Belkin, A Novosad, V Iavarone, M Divan, R Hiller, J Proslier, T Pearson, JE Karapetrov, G AF Belkin, A. Novosad, V. Iavarone, M. Divan, R. Hiller, J. Proslier, T. Pearson, J. E. Karapetrov, G. TI Giant conductance anisotropy in magnetically coupled Ferromagnet-Superconductor-Ferromagnet structures SO APPLIED PHYSICS LETTERS LA English DT Article DE ferromagnetic materials; magnetic anisotropy; magnetic domains; magnetic superconductors; superconducting transition temperature ID DOMAIN STRUCTURE; FILMS; HYBRIDS AB We demonstrate the evolution of the anisotropic conductivity in the superconductor that is magnetically coupled with two adjacent ferromagnetic layers. Stripe magnetic domain structure in the ferromagnetic layers results in directional superconducting order parameter in the superconducting layer. The conductance anisotropy strongly depends on the period of the magnetic domains and the strength of the local magnetization. The anisotropic conductivity of up to three orders of magnitude can be achieved with spatial critical temperature modulation of 5% of T(c). The effect could be exploited in low temperature nonvolatile logic and storage elements. C1 [Belkin, A.; Novosad, V.; Iavarone, M.; Hiller, J.; Proslier, T.; Pearson, J. E.; Karapetrov, G.] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Belkin, A.] IIT, Dept Phys, Chicago, IL 60616 USA. [Iavarone, M.] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA. [Divan, R.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Belkin, A (reprint author), Argonne Natl Lab, Div Mat Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM goran@anl.gov RI Hiller, Jon/A-2513-2009; Novosad, Valentyn/C-2018-2014; Novosad, V /J-4843-2015; Karapetrov, Goran/C-2840-2008 OI Hiller, Jon/0000-0001-7207-8008; Karapetrov, Goran/0000-0003-1113-0137 FU UChicago Argonne; LLC; Operator of Argonne National Laboratory ("Argonne") FX This work as well as the use of the Center for Nanoscale Materials and the Electron Microscopy Center at Argonne National Laboratory were supported by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. NR 22 TC 7 Z9 7 U1 0 U2 6 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 092513 DI 10.1063/1.3352079 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200048 ER PT J AU Bhattacharyya, D Liu, XY Genc, A Fraser, HL Hoagland, RG Misra, A AF Bhattacharyya, Dhriti Liu, Xiang-Yang Genc, Arda Fraser, Hamish L. Hoagland, Richard G. Misra, Amit TI Heterotwin formation during growth of nanolayered Al-TiN composites SO APPLIED PHYSICS LETTERS LA English DT Article DE ab initio calculations; aluminium; density functional theory; nanocomposites; nanofabrication; stacking faults; titanium compounds; transmission electron microscopy ID NANOCRYSTALLINE ALUMINUM; MOLECULAR-DYNAMICS; DEFORMATION; METALS; ENERGY; TWINS AB High stacking fault energy (SFE) materials such as Al do not form twins easily. Here, the authors report, through high-resolution transmission electron microscopy, that Al layers in an alternating Al/TiN composite grow in a twin relationship to both the TiN and the underlying Al layers. Density functional theory based ab initio modeling reveals that nitrogen termination in the {111} growth plane of the TiN layers greatly favors the growth of twin oriented Al layers on them. This finding provides a definite way of creating a twin-modulated structure in high SFE materials. C1 [Bhattacharyya, Dhriti; Misra, Amit] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA. [Genc, Arda; Fraser, Hamish L.] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA. [Liu, Xiang-Yang; Hoagland, Richard G.] Los Alamos Natl Lab, MST Struct Property Relat 8, Los Alamos, NM 87544 USA. RP Bhattacharyya, D (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, POB 1663, Los Alamos, NM 87544 USA. EM dhriti1@gmail.com RI Misra, Amit/H-1087-2012; Hoagland, Richard/G-9821-2012 FU U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering FX The authors thank J. K. Baldwin for deposition of the multilayers and Dr. J. Wang for his helpful comments and insight. The many fruitful discussions with Professor J. P. Hirth are gratefully acknowledged. This research was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering. NR 16 TC 11 Z9 11 U1 2 U2 16 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 093113 DI 10.1063/1.3330889 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200067 ER PT J AU Hindmarch, AT Dempsey, KJ Ciudad, D Negusse, E Arena, DA Marrows, CH AF Hindmarch, A. T. Dempsey, K. J. Ciudad, D. Negusse, E. Arena, D. A. Marrows, C. H. TI Fe diffusion, oxidation, and reduction at the CoFeB/MgO interface studied by soft x-ray absorption spectroscopy and magnetic circular dichroism SO APPLIED PHYSICS LETTERS LA English DT Article DE cobalt compounds; diffusion; ferromagnetic materials; interface magnetism; iron compounds; magnesium compounds; magnetic annealing; magnetic circular dichroism; magnetic tunnelling; magnetisation; oxidation; reduction (chemical); X-ray absorption spectra ID ROOM-TEMPERATURE; TUNNEL-JUNCTIONS; MAGNETORESISTANCE; BARRIERS AB We have studied the effect of annealing on the interface magnetization in a CoFeB/MgO structure which models the lower electrode in a magnetic tunnel junction device. We find that MgO deposition causes Fe to diffuse toward the CoFeB/MgO interface, where it preferentially bonds with oxygen to form a Fe-O-rich interfacial region with reduced magnetization. After annealing at 375 degrees C the compositional inhomogeneity remains; Fe is reduced back to a ferromagnetic metallic state and the full interfacial magnetization is regained. C1 [Hindmarch, A. T.; Dempsey, K. J.; Ciudad, D.; Marrows, C. H.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Negusse, E.] Montana State Univ, Dept Phys, Bozeman, MT 59717 USA. [Arena, D. A.] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA. RP Hindmarch, AT (reprint author), Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. EM a.t.hindmarch@leeds.ac.uk RI Marrows, Christopher/D-7980-2011; Hindmarch, Aidan/B-7970-2012; Ciudad, David/C-5787-2017; OI Ciudad, David/0000-0001-8047-6559; Marrows, Christopher/0000-0003-4812-6393 FU EPSRC; Spanish Ministry of Science and Innovation [2008-0352]; U.S. Army Research Office [W911NF-08-1-0325] FX The authors acknowledge financial support from EPSRC and are grateful for the provision of NSLS beamtime. D. C. acknowledges support from the Spanish Ministry of Science and Innovation through postdoctoral Grant No. 2008-0352. E. N. acknowledges support from the U.S. Army Research Office under Grant No. W911NF-08-1-0325. We appreciate assistance provided by NSLS VUV-ring technical staff. NR 31 TC 21 Z9 21 U1 0 U2 15 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 092501 DI 10.1063/1.3332576 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200036 ER PT J AU Lud, SQ Niedermeier, M Koch, PS Bruno, P Gruen, DM Stutzmann, M Garrido, JA AF Lud, Simon Q. Niedermeier, Martin Koch, Philipp S. Bruno, Paola Gruen, Dieter M. Stutzmann, Martin Garrido, Jose A. TI Electronic properties of ultrananocrystalline diamond surfaces SO APPLIED PHYSICS LETTERS LA English DT Article DE atomic force microscopy; diamond; elemental semiconductors; energy gap; grain boundaries; nanostructured materials; plasma materials processing; scanning tunnelling microscopy; scanning tunnelling spectroscopy; semiconductor thin films; surface morphology; X-ray photoelectron spectra ID SCANNING TUNNELING SPECTROSCOPY; NANOCRYSTALLINE DIAMOND; N-TYPE; FILMS; MICROSCOPE AB We have characterized ultrananocrystalline diamond films with different surface terminations by x-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). The surface terminations were performed by plasma functionalization in atmospheres of hydrogen, fluorine, and oxygen. XPS proves the dense monolayer coverage of the surface functionalization. AFM and STM show low impact of the plasma treatment on the surface morphology. STS has been used to investigate the surface electronic properties, for H-terminated surfaces the electronic structure is dominated by the sp(3) carbon phase of the grain surfaces; for O- and F-terminated surfaces, however, sp(2) carbon from the grain boundaries seems to determine the surface band gap. C1 [Lud, Simon Q.; Niedermeier, Martin; Koch, Philipp S.; Stutzmann, Martin; Garrido, Jose A.] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany. [Bruno, Paola; Gruen, Dieter M.] Argonne Natl Lab, Dept Mat Sci, Argonne, IL 60439 USA. RP Lud, SQ (reprint author), Tech Univ Munich, Walter Schottky Inst, Coulombwall 3, D-85748 Garching, Germany. EM garrido@wsi.tum.de RI bruno, paola/G-5786-2011; Garrido, Jose A./K-7491-2015; Stutzmann, Martin/B-1480-2012; OI Garrido, Jose A./0000-0001-5621-1067; Stutzmann, Martin/0000-0002-0068-3505 FU DFG [GA1432/1-1]; Nanosystems Initiative Munich (NIM); TUM International Graduate School of Science and Engineering (IGSSE) FX This work was partially supported by the DFG (Project No. GA1432/1-1), the Nanosystems Initiative Munich (NIM), and the TUM International Graduate School of Science and Engineering (IGSSE). NR 27 TC 11 Z9 11 U1 0 U2 21 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 092109 DI 10.1063/1.3340898 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200031 ER PT J AU Mazumder, M Borca-Tasciuc, T Teehan, SC Stinzianni, E Efstathiadis, H Solovyov, S AF Mazumder, Monalisa Borca-Tasciuc, Theodorian Teehan, Sean C. Stinzianni, Emilio Efstathiadis, Harry Solovyov, Slowa TI Temperature dependent thermal conductivity of Si/SiC amorphous multilayer films SO APPLIED PHYSICS LETTERS LA English DT Article DE amorphous semiconductors; elemental semiconductors; multilayers; phonons; semiconductor thin films; silicon; silicon compounds; sputter deposition; thermal conductivity; transmission electron microscopy; wide band gap semiconductors ID SILICON-CARBIDE; THIN-FILMS; LARGE-AREA; SUPERLATTICES; DETECTORS; TRANSPORT; COATINGS AB The cross-plane thermal conductivity of 22 nm period Si/SiC amorphous multilayer films deposited by magnetron sputtering and measured using a differential 3 omega method was found to decrease from 2.0 W/mK at 300 K to 1.1 W/mK at 80 K. Structural disorder in each of the constituent layers of the amorphous multilayer films was confirmed by high resolution transmission electron microscopy. Estimations of the relative contributions of interface and intrinsic layer thermal resistance based on microscopic phonon transport models indicate that mean free path reductions induced by the structural disorder within the multilayer films are responsible for the observed experimental trends. C1 [Borca-Tasciuc, Theodorian] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA. [Mazumder, Monalisa] Rensselaer Polytech Inst, Dept Biol & Chem Engn, Troy, NY 12180 USA. [Teehan, Sean C.; Stinzianni, Emilio; Efstathiadis, Harry] SUNY Albany, Coll Nanoscale Sci & Engn, Albany, NY 12203 USA. [Solovyov, Slowa] Brookhaven Natl Lab, Dept Condensed Matter Phys & Mat Sci, Upton, NY 11973 USA. Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Borca-Tasciuc, T (reprint author), Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA. EM borcat@rpi.edu FU National Science Foundation [CBET-0348613]; U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886] FX The authors (M. M. and T. B. T.) acknowledge financial support by the National Science Foundation Grant No. CBET-0348613. Research was carried out in part at the Center for Functional Nanomaterials, Brookhaven National Laboratory, which is supported by the U.S. Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-98CH10886. NR 24 TC 9 Z9 9 U1 3 U2 15 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 093103 DI 10.1063/1.3337093 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200057 ER PT J AU Schafer-Nolte, EO Stoica, T Gotschke, T Limbach, F Sutter, E Sutter, P Calarco, R AF Schaefer-Nolte, E. O. Stoica, T. Gotschke, T. Limbach, F. Sutter, E. Sutter, P. Calarco, R. TI Highly polarized Raman scattering anisotropy in single GaN nanowires SO APPLIED PHYSICS LETTERS LA English DT Article DE gallium compounds; III-V semiconductors; laser beams; nanowires; polarisation; Raman spectra; wide band gap semiconductors ID GROWTH; STATE; MBE; PHOTOLUMINESCENCE; NANOWHISKERS; SPECTROSCOPY; NANOCOLUMNS; NUCLEATION AB Single GaN nanowires and larger GaN ensembles are investigated by Raman spectroscopy. Spectra of nanowire ensembles prove the high crystal quality and are in agreement with selection rules for the wurtzite structure. Single nanowires are studied with a spatial resolution of the order of 400 nm for different polarization directions of the incident laser beam relative to the nanowire axis. In the single wire spectrum, only the A(1)(TO) was observed and the Raman intensity was suppressed for perpendicular polarization. These results confirm that Raman scattering in isolated GaN nanowires is governed by size effects. C1 [Schaefer-Nolte, E. O.; Stoica, T.; Gotschke, T.; Limbach, F.; Calarco, R.] Res Ctr Julich GmbH, Inst Bio & Nanosyst IBN 1, D-52425 Julich, Germany. [Schaefer-Nolte, E. O.; Stoica, T.; Gotschke, T.; Limbach, F.; Calarco, R.] JARA FIT Fundamentals Future Informat Technol, D-52425 Julich, Germany. [Schaefer-Nolte, E. O.; Sutter, E.; Sutter, P.] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA. RP Schafer-Nolte, EO (reprint author), Res Ctr Julich GmbH, Inst Bio & Nanosyst IBN 1, D-52425 Julich, Germany. EM t.stoica@fz-juelich.de RI Calarco, Raffaella/B-8218-2011 FU German Ministry of Education and Research; U.S. Department of Energy [DE-AC02-98CH1-886] FX The authors gratefully acknowledge fruitful discussions and suggestions by Professor D. Grutzmacher. The authors wish to thank also K. H. Deussen for technical support. This work was financially supported by the German Ministry of Education and Research project "QPENS." It was performed in part under the auspices of the U.S. Department of Energy, under Contract No. DE-AC02-98CH1-886. NR 34 TC 24 Z9 24 U1 0 U2 24 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 091907 DI 10.1063/1.3343347 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200015 ER PT J AU Sterbinsky, GE Wessels, BW Kim, JW Karapetrova, E Ryan, PJ Keavney, DJ AF Sterbinsky, G. E. Wessels, B. W. Kim, J. -W. Karapetrova, E. Ryan, P. J. Keavney, D. J. TI Strain-driven spin reorientation in magnetite/barium titanate heterostructures SO APPLIED PHYSICS LETTERS LA English DT Article DE barium compounds; epitaxial layers; ferromagnetic materials; internal stresses; iron compounds; magnetic anisotropy; magnetic structure; magnetic transitions; magnetoelastic effects; spin dynamics; Zeeman effect ID PHASE-TRANSITION; THIN-FILMS AB We report spin reorientation transitions in a Fe(3)O(4)/BaTiO(3) heterostructure driven by strain at the structural phase transitions of BaTiO(3). These spin reorientations result from the emergence of an in-plane uniaxial magnetic anisotropy. The magnetoelastic response of Fe(3)O(4) to the variations in epitaxial strain that occur at the BaTiO(3) phase transitions gives rise to the uniaxial anisotropy. The anisotropy energies calculated from the in-plane strain are in quantitative agreement with a change in the Zeeman energy. C1 [Sterbinsky, G. E.; Wessels, B. W.] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA. [Kim, J. -W.; Karapetrova, E.; Ryan, P. J.; Keavney, D. J.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Sterbinsky, GE (reprint author), Northwestern Univ, Dept Mat Sci & Engn, 2220 Campus Dr, Evanston, IL 60208 USA. EM GeorgeSterbinsky@u.northwestern.edu; b-wessels@northwestern.edu RI Wessels, Bruce/B-7541-2009 FU National Science Foundation [DMR-0076097]; U.S. DOE, Office of Science, Office of Basic Energy Sciences [DE-AC02-06CH11357] FX This work made use of Central Facilities supported by the MRSEC program of the National Science Foundation (Grant No. DMR-0076097) at the Materials Research Center of Northwestern University. Use of the Center for Nanoscale Materials and the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. DOE, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. NR 13 TC 20 Z9 20 U1 5 U2 18 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 092510 DI 10.1063/1.3330890 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200045 ER PT J AU Zorba, V Chen, XB Mao, SS AF Zorba, Vassilia Chen, Xiaobo Mao, Samuel S. TI Superhydrophilic TiO2 surface without photocatalytic activation SO APPLIED PHYSICS LETTERS LA English DT Article DE bio-inspired materials; contact angle; hydrophilicity; nanoporous materials; titanium compounds; transparency; wetting ID TITANIUM-DIOXIDE FILM; THIN-FILM; COATINGS AB Since the discovery of extreme surface wetting phenomenon induced by ultraviolet photocatalysis, TiO2 has become the material of choice for environmental friendly applications such as self-cleaning coatings. Nevertheless, it remains a significant challenge to realize surfaces exhibiting persistent superhydrophilicity but without the need of external stimuli. We report a bioinspired TiO2 nanostructure that shows extreme superhydrophilicity without the need of light activation, and with stability against successive wetting-dewetting cycles. This ultimate TiO2 wetting surface exhibits high transmittance from near ultraviolet to the infrared, thus enabling practical antifogging technologies where transparency is critical. C1 [Zorba, Vassilia; Chen, Xiaobo; Mao, Samuel S.] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. [Mao, Samuel S.] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA. RP Zorba, V (reprint author), Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA. EM ssmao@lbl.gov RI Zorba, Vassilia/C-4589-2015 FU U.S. Department of Energy FX This research has been supported by the U.S. Department of Energy. NR 18 TC 23 Z9 27 U1 4 U2 50 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAR 1 PY 2010 VL 96 IS 9 AR 093702 DI 10.1063/1.3291667 PG 3 WC Physics, Applied SC Physics GA 564VN UT WOS:000275246200082 ER PT J AU Roberts, DJ Phan, AV Tippur, HV Gray, LJ Kaplan, T AF Roberts, D. J. Phan, A-V Tippur, H. V. Gray, L. J. Kaplan, T. TI SGBEM modeling of fatigue crack growth in particulate composites SO ARCHIVE OF APPLIED MECHANICS LA English DT Article DE Particulate composites; Fatigue crack growth; Crack-inclusion(s) interaction; Symmetric-Galerkin boundary element method ID BOUNDARY-ELEMENT METHOD; HYPERSINGULAR INTEGRALS; NUMERICAL-SIMULATION; PROPAGATION; BEM; BEHAVIOR; DENSITY AB The symmetric-Galerkin boundary element method (SGBEM) has previously been employed to model 2-D crack growth in particulate composites under quasi-static loading conditions. In this paper, an initial attempt is made in extending the simulation technique to analyze the interaction between a growing crack and clusters of perfectly bonded particles in a brittle matrix under cyclic loading conditions. To this end, linear elastic fracture mechanics and no hysteresis are assumed. Of particular interest is the role clusters of inclusions play on the fatigue life of particulate composites. The simulations employ a fatigue crack growth prediction tool based upon the SGBEM for multiregions, a modified quarter-point crack-tip element, the displacement correlation technique for evaluating stress intensity factors, a Paris law for fatigue crack growth rates, and the maximum principal stress criterion for crack-growth direction. The numerical results suggest that this fatigue crack growth prediction tool is as robust as the quasi-static crack growth prediction tool previously developed. The simulations also show a complex interplay between a propagating crack and an inclusion cluster of different densities when it comes to predicting the fatigue life of particulate composites with various volume fractions. C1 [Roberts, D. J.; Phan, A-V] Univ S Alabama, Dept Mech Engn, Mobile, AL 36688 USA. [Tippur, H. V.] Auburn Univ, Dept Mech Engn, Auburn, AL 36849 USA. [Gray, L. J.; Kaplan, T.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA. RP Phan, AV (reprint author), Univ S Alabama, Dept Mech Engn, Mobile, AL 36688 USA. EM vphan@jaguar1.usouthal.edu FU U.S. Army Research Office [W911 NF-04-1-0257]; Office of Mathematical, Information, and Computational Sciences; U.S. Department of Energy [DE-AC05-00OR22725] FX This research was supported in part by the U.S. Army Research Office Grant # W911 NF-04-1-0257 to HVT and A-VP, and by the Applied Mathematical Sciences Research Program of the Office of Mathematical, Information, and Computational Sciences, the U.S. Department of Energy under contract DE-AC05-00OR22725 with UT-Battelle, LLC., to LJG and TK. NR 41 TC 3 Z9 3 U1 1 U2 5 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0939-1533 J9 ARCH APPL MECH JI Arch. Appl. Mech. PD MAR PY 2010 VL 80 IS 3 BP 307 EP 322 DI 10.1007/s00419-009-0318-x PG 16 WC Mechanics SC Mechanics GA 546JQ UT WOS:000273807500007 ER PT J AU Hunn, BD Conover, DR Jarnagin, RE McBride, M Schwedler, M AF Hunn, Bruce D. Conover, David R. Jarnagin, Ronald E. McBride, Merle Schwedler, Mick TI 35 Years of Standard 90.1 SO ASHRAE JOURNAL LA English DT Article C1 [Conover, David R.] Pacific NW Natl Lab, Washington, DC USA. [Jarnagin, Ronald E.] Pacific NW Natl Lab, Richland, WA 99352 USA. [McBride, Merle] Owens Corning Ctr Sci & Technol, Granville, OH USA. [Schwedler, Mick] Trane, La Crosse, WI USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC, PI ATLANTA PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA SN 0001-2491 J9 ASHRAE J JI ASHRAE J. PD MAR PY 2010 VL 52 IS 3 BP 36 EP + PG 8 WC Thermodynamics; Construction & Building Technology; Engineering, Mechanical SC Thermodynamics; Construction & Building Technology; Engineering GA 572EB UT WOS:000275809000009 ER PT J AU Dieckmann, J McKenney, K Brodrick, J AF Dieckmann, John McKenney, Kurtis Brodrick, James TI Warming Up To Pellet Stoves SO ASHRAE JOURNAL LA English DT Editorial Material C1 [Dieckmann, John] TIAX LLC, Mech Syst Grp, Cambridge, MA USA. [Brodrick, James] US DOE, Bldg Technol Program, Washington, DC USA. RP Dieckmann, J (reprint author), TIAX LLC, Mech Syst Grp, Cambridge, MA USA. NR 6 TC 1 Z9 1 U1 0 U2 1 PU AMER SOC HEATING REFRIGERATING AIR-CONDITIONING ENG, INC, PI ATLANTA PA 1791 TULLIE CIRCLE NE, ATLANTA, GA 30329 USA SN 0001-2491 J9 ASHRAE J JI ASHRAE J. PD MAR PY 2010 VL 52 IS 3 BP 82 EP 83 PG 2 WC Thermodynamics; Construction & Building Technology; Engineering, Mechanical SC Thermodynamics; Construction & Building Technology; Engineering GA 572EB UT WOS:000275809000014 ER PT J AU Lawrence, DJ Elphic, RC Feldman, WC Funsten, HO Prettyman, TH AF Lawrence, David J. Elphic, Richard C. Feldman, William C. Funsten, Herbert O. Prettyman, Thomas H. TI Performance of Orbital Neutron Instruments for Spatially Resolved Hydrogen Measurements of Airless Planetary Bodies SO ASTROBIOLOGY LA English DT Article DE Planetary instrumentation; Planetary science; Moon; Spacecraft experiments; Hydrogen ID LUNAR RECONNAISSANCE ORBITER; EPITHERMAL NEUTRONS; MARS ODYSSEY; GAMMA-RAY; WATER ICE; MOON; SPECTROMETER; PROSPECTOR; MISSION; POLES AB Orbital neutron spectroscopy has become a standard technique for measuring planetary surface compositions from orbit. While this technique has led to important discoveries, such as the deposits of hydrogen at the Moon and Mars, a limitation is its poor spatial resolution. For omni- directional neutron sensors, spatial resolutions are 1-1.5 times the spacecraft's altitude above the planetary surface (or 40-600km for typical orbital altitudes). Neutron sensors with enhanced spatial resolution have been proposed, and one with a collimated field of view is scheduled to fly on a mission to measure lunar polar hydrogen. No quantitative studies or analyses have been published that evaluate in detail the detection and sensitivity limits of spatially resolved neutron measurements. Here, we describe two complementary techniques for evaluating the hydrogen sensitivity of spatially resolved neutron sensors: an analytic, closed-form expression that has been validated with Lunar Prospector neutron data, and a three-dimensional modeling technique. The analytic technique, called the Spatially resolved Neutron Analytic Sensitivity Approximation (SNASA), provides a straightforward method to evaluate spatially resolved neutron data from existing instruments as well as to plan for future mission scenarios. We conclude that the existing detector-the Lunar Exploration Neutron Detector (LEND)-scheduled to launch on the Lunar Reconnaissance Orbiter will have hydrogen sensitivities that are over an order of magnitude poorer than previously estimated. We further conclude that a sensor with a geometric factor of similar to 100 cm(2) Sr (compared to the LEND geometric factor of similar to 10.9 cm(2) Sr) could make substantially improved measurements of the lunar polar hydrogen spatial distribution. C1 [Lawrence, David J.] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA. [Elphic, Richard C.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Feldman, William C.; Prettyman, Thomas H.] Planetary Sci Inst, Tucson, AZ USA. [Funsten, Herbert O.] Los Alamos Natl Lab, Los Alamos, NM USA. RP Lawrence, DJ (reprint author), Johns Hopkins Univ, Appl Phys Lab, MP3-E169,11100 Johns Hopkins Rd, Laurel, MD 20723 USA. EM David.J.Lawrence@jhuapl.edu RI Funsten, Herbert/A-5702-2015; Lawrence, David/E-7463-2015; OI Funsten, Herbert/0000-0002-6817-1039; Lawrence, David/0000-0002-7696-6667; Prettyman, Thomas/0000-0003-0072-2831 FU NASA Lunar Science Institute; United States Department of Energy FX D. Lawrence (SDG) gratefully acknowledges the Johns Hopkins University Applied Physics Laboratory Janney Publication Program for supporting the final analysis and manuscript writing of this paper as well as support from the NASA Lunar Science Institute. Work at Los Alamos, much of which was funded through the Laboratory Directed Research and Development program, was performed under the auspices of the United States Department of Energy. NR 44 TC 15 Z9 15 U1 0 U2 10 PU MARY ANN LIEBERT, INC PI NEW ROCHELLE PA 140 HUGUENOT STREET, 3RD FL, NEW ROCHELLE, NY 10801 USA SN 1531-1074 EI 1557-8070 J9 ASTROBIOLOGY JI Astrobiology PD MAR PY 2010 VL 10 IS 2 BP 183 EP 200 DI 10.1089/ast.2009.0401 PG 18 WC Astronomy & Astrophysics; Biology; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Life Sciences & Biomedicine - Other Topics; Geology GA 585IN UT WOS:000276818700003 PM 20298147 ER PT J AU Abraham, J Abreu, P Aglietta, M Aguirre, C Ahn, EJ Allard, D Allekotte, I Allen, J Alvarez-Muniz, J Ambrosio, M Anchordoqui, L Andringa, S Anzalone, A Aramo, C Arganda, E Arisaka, K Arqueros, F Asch, T Asorey, H Assis, P Aublin, J Ave, M Avila, G Backer, T Badagnani, D Barber, KB Barbosa, AF Barroso, SLC Baughman, B Bauleo, P Beatty, JJ Beau, T Becker, BR Becker, KH Belletoile, A Bellido, JA BenZvi, S Berat, C Bertou, X Biermann, PL Billoir, P Blanch-Bigas, O Blanco, F Bleve, C Blumer, H Bohacova, M Boncioli, D Bonifazi, C Bonino, R Borodai, N Brack, J Brogueira, P Brown, WC Bruijn, R Buchholz, P Bueno, A Burton, RE Busca, NG Caballero-Mora, KS Caramete, L Caruso, R Castellina, A Catalano, O Cazon, L Cester, R Chauvin, J Chiavassa, A Chinellato, JA Chou, A Chudoba, J Chye, J Clay, RW Colombo, E Conceicao, R Contreras, F Cook, H Coppens, J Cordier, A Cotti, U Coutu, S Covault, CE Creusot, A Criss, A Cronin, J Curutiu, A Dagoret-Campagne, S Dallier, R Daumiller, K Dawson, BR de Almeida, RM De Domenico, M De Donato, C de Jong, SJ De La Vega, G de Mello, WJM Neto, JRTD De Mitri, I de Souza, V de Vries, KD Decerprit, G del Peral, L Deligny, O Della Selva, A Delle Fratte, C Dembinski, H Di Giulio, C Diaz, JC Diep, PN Dobrigkeit, C D'Olivo, JC Dong, PN Dorofeev, A dos Anjos, JC Dova, MT D'Urso, D Dutan, I DuVernois, MA Ebr, J Engel, R Erdmann, M Escobar, CO Etchegoyen, A San Luis, PF Falcke, H Farrar, G Fauth, AC Fazzini, N Ferrer, F Ferrero, A Fick, B Filevich, A Filipcic, A Fleck, I Fliescher, S Fracchiolla, CE Fraenkel, ED Fulgione, W Gamarra, RF Gambetta, S Garcia, B Gamez, DG Garcia-Pinto, D Garrido, X Gelmini, G Gemmeke, H Ghia, PL Giaccari, U Giller, M Glass, H Goggin, LM Gold, MS Golup, G Albarracin, FG Berisso, MG Goncalves, P Gonzalez, D Gonzalez, JG Gora, D Gorgi, A Gouffon, P Gozzini, SR Grashorn, E Grebe, S Grigat, M Grillo, AF Guardincerri, Y Guarino, F Guedes, GP Gutierrez, J Hague, JD Halenka, V Hansen, P Harari, D Harmsma, S Harton, JL Haungs, A Healy, MD Hebbeker, T Hebrero, G Heck, D Hojvat, C Holmes, VC Homola, P Horandel, JR Horneffer, A Hrabovsky, M Huege, T Hussain, M Iarlori, M Insolia, A Ionita, F Italiano, A Jiraskova, S Kaducak, M Kampert, KH Karova, T Kasper, P Kegl, B Keilhauer, B Kelley, J Kemp, E Kieckhafer, RM Klages, HO Kleifges, M Kleinfeller, J Knapik, R Knapp, J Koang, DH Krieger, A Kromer, O Kruppke-Hansen, D Kuehn, F Kuempel, D Kulbartz, K Kunka, N Kusenko, A La Rosa, G Lachaud, C Lago, BL Lautridou, P Leao, MSAB Lebrun, D Lebrun, P Lee, J de Oliveira, MAL Lemiere, A Letessier-Selvon, A Lhenry-Yvon, I Lopez, R Aguera, AL Louedec, K Bahilo, JL Lucero, A Ludwig, M Lyberis, H Maccarone, MC Macolino, C Maldera, S Mandat, D Mantsch, P Mariazzi, AG Maris, IC Falcon, HRM Marsella, G Martello, D Bravo, OM Mathes, HJ Matthews, J Matthews, JAJ Matthiae, G Maurizio, D Mazur, PO McEwen, M McNeil, RR Medina-Tanco, G Melissas, M Melo, D Menichetti, E Menshikov, A Meurer, C Micheletti, MI Miller, W Miramonti, L Mollerach, S Monasor, M Ragaigne, DM Montanet, F Morales, B Morello, C Moreno, JC Morris, C Mostafa, M Moura, CA Mueller, S Muller, MA Mussa, R Navarra, G Navarro, JL Navas, S Necesal, P Nellen, L Newman-Holmes, C Nhung, PT Nierstenhoefer, N Nitz, D Nosek, D Nozka, L Nyklicek, M Oehlschlager, J Olinto, A Oliva, P Olmos-Gilbaja, VM Ortiz, M Pacheco, N Selmi-Dei, DP Palatka, M Pallotta, J Palmieri, N Parente, G Parizot, E Parlati, S Parsons, RD Pastor, S Paul, T Pavlidou, V Payet, K Pech, M Pekala, J Pepe, IM Perrone, L Pesce, R Petermann, E Petrera, S Petrinca, P Petrolini, A Petrov, Y Petrovic, J Pfendner, C Piegaia, R Pierog, T Pimenta, M Pirronello, V Platino, M Ponce, VH Pontz, M Privitera, P Prouza, M Quel, EJ Rautenberg, J Ravel, O Ravignani, D Redondo, A Revenu, B Rezende, FAS Ridky, J Riggi, S Risse, M Riviere, C Rizi, V Robledo, C Rodriguez, G Martino, JR Rojo, JR Rodriguez-Cabo, I Rodriguez-Frias, MD Ros, G Rosado, J Rossler, T Roth, M Rouille-d'Orfeuil, B Roulet, E Rovero, AC Salamida, F Salazar, H Salina, G Sanchez, F Santander, M Santo, CE Santos, E Santos, EM Sarazin, F Sarkar, S Sato, R Scharf, N Scherini, V Schieler, H Schiffer, P Schmidt, A Schmidt, F Schmidt, T Scholten, O Schoorlemmer, H Schovancova, J Schovanek, P Schroeder, F Settimo, M Shellard, RC Sidelnik, I Siffert, BB Sigl, G Smialkowski, A Smida, R Snow, GR Sommers, P Sorokin, J Spinka, H Squartini, R Strazzeri, E Stutz, A Suarez, F Suomijarvi, T Supanitsky, AD Sutherland, MS Swain, J Szadkowski, Z Tamashiro, A Tamburro, A Tarutina, T Tascau, O Tcaciuc, R Tcherniakhovski, D Tegolo, D Thao, NT Thomas, D Ticona, R Tiffenberg, J Timmermans, C Tkaczyk, W Peixoto, CJT Tome, B Tonachini, A Torres, I Travnicek, P Tridapalli, DB Tristram, G Trovato, E Tueros, M Ulrich, R Unger, M Urban, M Galicia, JFV Valino, I Valore, L van den Berg, AM Vazquez, JR Vazquez, RA Veberic, D Velarde, A Venters, T Verzi, V Videla, M Villasenor, L Vorobiov, S Voyvodic, L Wahlberg, H Wahrlich, P Wainberg, O Warner, D Watson, AA Westerhoff, S Whelan, BJ Wieczorek, G Wiencke, L Wilczynska, B Wilczynski, H Winchen, T Winnick, MG Wu, H Wundheiler, B Yamamoto, T Younk, P Yuan, G Yushkov, A Zas, E Zavrtanik, D Zavrtanik, M Zaw, I Zepeda, A Ziolkowski, M AF Abraham, J. Abreu, P. Aglietta, M. Aguirre, C. Ahn, E. J. Allard, D. Allekotte, I. Allen, J. Alvarez-Muniz, J. Ambrosio, M. Anchordoqui, L. Andringa, S. Anzalone, A. Aramo, C. Arganda, E. Arisaka, K. Arqueros, F. Asch, T. Asorey, H. Assis, P. Aublin, J. Ave, M. Avila, G. Baecker, T. Badagnani, D. Barber, K. B. Barbosa, A. F. Barroso, S. L. C. Baughman, B. Bauleo, P. Beatty, J. J. Beau, T. Becker, B. R. Becker, K. H. Belletoile, A. Bellido, J. A. BenZvi, S. Berat, C. Bertou, X. Biermann, P. L. Billoir, P. Blanch-Bigas, O. Blanco, F. Bleve, C. Bluemer, H. Bohacova, M. Boncioli, D. Bonifazi, C. Bonino, R. Borodai, N. Brack, J. Brogueira, P. Brown, W. C. Bruijn, R. Buchholz, P. Bueno, A. Burton, R. E. Busca, N. G. Caballero-Mora, K. S. Caramete, L. Caruso, R. Castellina, A. Catalano, O. Cazon, L. Cester, R. Chauvin, J. Chiavassa, A. Chinellato, J. A. Chou, A. Chudoba, J. Chye, J. Clay, R. W. Colombo, E. Conceicao, R. Contreras, F. Cook, H. Coppens, J. Cordier, A. Cotti, U. Coutu, S. Covault, C. E. Creusot, A. Criss, A. Cronin, J. Curutiu, A. Dagoret-Campagne, S. Dallier, R. Daumiller, K. Dawson, B. R. de Almeida, R. M. De Domenico, M. De Donato, C. de Jong, S. J. De La Vega, G. de Mello Junior, W. J. M. de Mello Neto, J. R. T. De Mitri, I. de Souza, V. de Vries, K. D. Decerprit, G. del Peral, L. Deligny, O. Della Selva, A. Delle Fratte, C. Dembinski, H. Di Giulio, C. Diaz, J. C. Diep, P. N. Dobrigkeit, C. D'Olivo, J. C. Dong, P. N. Dorofeev, A. dos Anjos, J. C. Dova, M. T. D'Urso, D. Dutan, I. DuVernois, M. A. Ebr, J. Engel, R. Erdmann, M. Escobar, C. O. Etchegoyen, A. Facal San Luis, P. Falcke, H. Farrar, G. Fauth, A. C. Fazzini, N. Ferrer, F. Ferrero, A. Fick, B. Filevich, A. Filipcic, A. Fleck, I. Fliescher, S. Fracchiolla, C. E. Fraenkel, E. D. Fulgione, W. Gamarra, R. F. Gambetta, S. Garcia, B. Garcia Gamez, D. Garcia-Pinto, D. Garrido, X. Gelmini, G. Gemmeke, H. Ghia, P. L. Giaccari, U. Giller, M. Glass, H. Goggin, L. M. Gold, M. S. Golup, G. Gomez Albarracin, F. Gomez Berisso, M. Goncalves, P. Gonzalez, D. Gonzalez, J. G. Gora, D. Gorgi, A. Gouffon, P. Gozzini, S. R. Grashorn, E. Grebe, S. Grigat, M. Grillo, A. F. Guardincerri, Y. Guarino, F. Guedes, G. P. Gutierrez, J. Hague, J. D. Halenka, V. Hansen, P. Harari, D. Harmsma, S. Harton, J. L. Haungs, A. Healy, M. D. Hebbeker, T. Hebrero, G. Heck, D. Hojvat, C. Holmes, V. C. Homola, P. Horandel, J. R. Horneffer, A. Hrabovsky, M. Huege, T. Hussain, M. Iarlori, M. Insolia, A. Ionita, F. Italiano, A. Jiraskova, S. Kaducak, M. Kampert, K. H. Karova, T. Kasper, P. Kegl, B. Keilhauer, B. Kelley, J. Kemp, E. Kieckhafer, R. M. Klages, H. O. Kleifges, M. Kleinfeller, J. Knapik, R. Knapp, J. Koang, D. -H. Krieger, A. Kroemer, O. Kruppke-Hansen, D. Kuehn, F. Kuempel, D. Kulbartz, K. Kunka, N. Kusenko, A. La Rosa, G. Lachaud, C. Lago, B. L. Lautridou, P. Leao, M. S. A. B. Lebrun, D. Lebrun, P. Lee, J. Leigui de Oliveira, M. A. Lemiere, A. Letessier-Selvon, A. Lhenry-Yvon, I. Lopez, R. Lopez Agueera, A. Louedec, K. Lozano Bahilo, J. Lucero, A. Ludwig, M. Lyberis, H. Maccarone, M. C. Macolino, C. Maldera, S. Mandat, D. Mantsch, P. Mariazzi, A. G. Maris, I. C. Marquez Falcon, H. R. Marsella, G. Martello, D. Martinez Bravo, O. Mathes, H. J. Matthews, J. Matthews, J. A. J. Matthiae, G. Maurizio, D. Mazur, P. O. McEwen, M. McNeil, R. R. Medina-Tanco, G. Melissas, M. Melo, D. Menichetti, E. Menshikov, A. Meurer, C. Micheletti, M. I. Miller, W. Miramonti, L. Mollerach, S. Monasor, M. Ragaigne, D. Monnier Montanet, F. Morales, B. Morello, C. Moreno, J. C. Morris, C. Mostafa, M. Moura, C. A. Mueller, S. Muller, M. A. Mussa, R. Navarra, G. Navarro, J. L. Navas, S. Necesal, P. Nellen, L. Newman-Holmes, C. Nhung, P. T. Nierstenhoefer, N. Nitz, D. Nosek, D. Nozka, L. Nyklicek, M. Oehlschlaeger, J. Olinto, A. Oliva, P. Olmos-Gilbaja, V. M. Ortiz, M. Pacheco, N. Selmi-Dei, D. Pakk Palatka, M. Pallotta, J. Palmieri, N. Parente, G. Parizot, E. Parlati, S. Parsons, R. D. Pastor, S. Paul, T. Pavlidou, V. Payet, K. Pech, M. Pekala, J. Pepe, I. M. Perrone, L. Pesce, R. Petermann, E. Petrera, S. Petrinca, P. Petrolini, A. Petrov, Y. Petrovic, J. Pfendner, C. Piegaia, R. Pierog, T. Pimenta, M. Pirronello, V. Platino, M. Ponce, V. H. Pontz, M. Privitera, P. Prouza, M. Quel, E. J. Rautenberg, J. Ravel, O. Ravignani, D. Redondo, A. Revenu, B. Rezende, F. A. S. Ridky, J. Riggi, S. Risse, M. Riviere, C. Rizi, V. Robledo, C. Rodriguez, G. Martino, J. Rodriguez Rodriguez Rojo, J. Rodriguez-Cabo, I. Rodriguez-Frias, M. D. Ros, G. Rosado, J. Rossler, T. Roth, M. Rouille-d'Orfeuil, B. Roulet, E. Rovero, A. C. Salamida, F. Salazar, H. Salina, G. Sanchez, F. Santander, M. Santo, C. E. Santos, E. Santos, E. M. Sarazin, F. Sarkar, S. Sato, R. Scharf, N. Scherini, V. Schieler, H. Schiffer, P. Schmidt, A. Schmidt, F. Schmidt, T. Scholten, O. Schoorlemmer, H. Schovancova, J. Schovanek, P. Schroeder, F. Settimo, M. Shellard, R. C. Sidelnik, I. Siffert, B. B. Sigl, G. Smialkowski, A. Smida, R. Snow, G. R. Sommers, P. Sorokin, J. Spinka, H. Squartini, R. Strazzeri, E. Stutz, A. Suarez, F. Suomijarvi, T. Supanitsky, A. D. Sutherland, M. S. Swain, J. Szadkowski, Z. Tamashiro, A. Tamburro, A. Tarutina, T. Tascau, O. Tcaciuc, R. Tcherniakhovski, D. Tegolo, D. Thao, N. T. Thomas, D. Ticona, R. Tiffenberg, J. Timmermans, C. Tkaczyk, W. Todero Peixoto, C. J. Tome, B. Tonachini, A. Torres, I. Travnicek, P. Tridapalli, D. B. Tristram, G. Trovato, E. Tueros, M. Ulrich, R. Unger, M. Urban, M. Valdes Galicia, J. F. Valino, I. Valore, L. van den Berg, A. M. Vazquez, J. R. Vazquez, R. A. Veberic, D. Velarde, A. Venters, T. Verzi, V. Videla, M. Villasenor, L. Vorobiov, S. Voyvodic, L. Wahlberg, H. Wahrlich, P. Wainberg, O. Warner, D. Watson, A. A. Westerhoff, S. Whelan, B. J. Wieczorek, G. Wiencke, L. Wilczynska, B. Wilczynski, H. Winchen, T. Winnick, M. G. Wu, H. Wundheiler, B. Yamamoto, T. Younk, P. Yuan, G. Yushkov, A. Zas, E. Zavrtanik, D. Zavrtanik, M. Zaw, I. Zepeda, A. Ziolkowski, M. CA Pierre Auger Collaboration TI A study of the effect of molecular and aerosol conditions in the atmosphere on air fluorescence measurements at the Pierre Auger Observatory SO ASTROPARTICLE PHYSICS LA English DT Article DE Cosmic rays; Extensive air showers; Air fluorescence method; Atmosphere; Aerosols; Lidar; Bi-static lidar ID COSMIC-RAY SHOWERS; MULTIPLE-SCATTERING; ANGSTROM EXPONENT; SURFACE DETECTOR; CROSS-SECTIONS; LIGHT-EMISSION; DEPENDENCE; NITROGEN; RECONSTRUCTION; ELECTRONS AB The air fluorescence detector of the Pierre Auger Observatory is designed to perforin calorimetric measurements of extensive air showers created by Cosmic rays of above 10(18) eV. To correct these measurements for the effects introduced by atmospheric fluctuations, the Observatory contains a group Of monitoring instruments to record atmospheric conditions across the detector site, ail area exceeding 3000 km(2). The atmospheric data are used extensively in the reconstruction of air showers, and are particularly important for the correct determination of shower energies and the depths of shower maxima. This paper contains a summary of the molecular and aerosol conditions measured at the Pierre Auger Observatory since the start of regular operations in 2004, and includes a discussion of the impact of these measurements oil air shower reconstructions. Between 10(18) and 10(20) eV, the systematic Uncertainties due to all atmospheric effects increase from 4% to 8% in measurements of shower energy, and 4 g cm(-2) to 8 g cm(-2) in measurements of the shower maximum. (C) 2010 Elsevier B.V. All rights reserved. C1 [BenZvi, S.; Pfendner, C.; Westerhoff, S.] Univ Wisconsin, Madison, WI 53706 USA. [Allekotte, I.; Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Ponce, V. H.; Roulet, E.] Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina. [Allekotte, I.; Asorey, H.; Bertou, X.; Golup, G.; Gomez Berisso, M.; Harari, D.; Mollerach, S.; Ponce, V. H.; Roulet, E.] Consejo Nacl Invest Cient & Tecn, CNEA, UNCuyo, San Carlos De Bariloche, Rio Negro, Argentina. [Colombo, E.; Etchegoyen, A.; Ferrero, A.; Filevich, A.; Gamarra, R. F.; Krieger, A.; Micheletti, M. I.; Platino, M.; Ravignani, D.; Sidelnik, I.; Suarez, F.; Wainberg, O.; Wundheiler, B.] UTN FRBA, CONICET, Comis Nacl Energia Atom, Ctr Atom Constituyentes, Buenos Aires, DF, Argentina. [Guardincerri, Y.; Piegaia, R.; Tiffenberg, J.] Univ Buenos Aires, Dept Fis, FCEyN, RA-1053 Buenos Aires, DF, Argentina. [Badagnani, D.; Dova, M. T.; Gomez Albarracin, F.; Hansen, P.; Mariazzi, A. G.; Moreno, J. C.; Tarutina, T.; Tueros, M.; Wahlberg, H.] Univ Natl La Plata, IFLP, La Plata, Buenos Aires, Argentina. [Badagnani, D.; Dova, M. T.; Gomez Albarracin, F.; Hansen, P.; Mariazzi, A. G.; Moreno, J. 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G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] Univ Granada, Granada, Spain. [Bueno, A.; Garcia Gamez, D.; Gonzalez, J. G.; Lozano Bahilo, J.; Navarro, J. L.; Navas, S.] CAFPE, Granada, Spain. [Alvarez-Muniz, J.; Facal San Luis, P.; Lopez Agueera, A.; Olmos-Gilbaja, V. M.; Parente, G.; Rodriguez-Cabo, I.; Vazquez, R. A.; Zas, E.] Univ Santiago Compostela, Santiago De Compostela, Spain. [Sarkar, S.] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford, England. [Bruijn, R.; Cook, H.; Gozzini, S. R.; Knapp, J.; Parsons, R. D.; Watson, A. A.] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England. [Spinka, H.] Argonne Natl Lab, Argonne, IL 60439 USA. [Burton, R. E.; Covault, C. E.; Ferrer, F.] Case Western Reserve Univ, Cleveland, OH 44106 USA. [Sarazin, F.; Wiencke, L.] Colorado Sch Mines, Golden, CO 80401 USA. [Bauleo, P.; Brack, J.; Dorofeev, A.; Fracchiolla, C. E.; Harton, J. 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EM sybenzvi@icecube.wisc.cdu RI Ridky, Jan/H-6184-2014; Chudoba, Jiri/G-7737-2014; Pech, Miroslav/G-5760-2014; Garcia Pinto, Diego/J-6724-2014; Pastor, Sergio/J-6902-2014; Tome, Bernardo/J-4410-2013; Espirito Santo, Maria Catarina/L-2341-2014; Pimenta, Mario/M-1741-2013; Ros, German/L-4764-2014; Schussler, Fabian/G-5313-2013; Di Giulio, Claudio/B-3319-2015; Anjos, Joao/C-8335-2013; Nierstenhofer, Nils/H-3699-2013; Goncalves, Patricia /D-8229-2013; Assis, Pedro/D-9062-2013; Prouza, Michael/F-8514-2014; Mandat, Dusan/G-5580-2014; Bohacova, Martina/G-5898-2014; Nozka, Libor/G-5550-2014; Cazon, Lorenzo/G-6921-2014; Schovanek, Petr/G-7117-2014; Travnicek, Petr/G-8814-2014; Smida, Radomir/G-6314-2014; de souza, Vitor/D-1381-2012; Shellard, Ronald/G-4825-2012; Petrolini, Alessandro/H-3782-2011; Muller, Marcio Aparecido/H-9112-2012; fulgione, walter/I-5232-2012; D'Urso, Domenico/I-5325-2012; Bleve, Carla/J-2521-2012; Brogueira, Pedro/K-3868-2012; Chinellato, Jose Augusto/I-7972-2012; Tamburro, Alessio/A-5703-2013; Yushkov, Alexey/A-6958-2013; Falcke, Heino/H-5262-2012; Ebr, Jan/H-8319-2012; Dias, Sandra/F-8134-2010; Dutan, Ioana/C-2337-2011; Caramete, Laurentiu/C-2328-2011; Fauth, Anderson/F-9570-2012; Todero Peixoto, Carlos Jose/G-3873-2012; Aramo, Carla/D-4317-2011; Pesce, Roberto/G-5791-2011; Kemp, Ernesto/H-1502-2011; Chiavassa, Andrea/A-7597-2012; Verzi, Valerio/B-1149-2012; Chinellato, Carola Dobrigkeit /F-2540-2011; Venters, Tonia/D-2936-2012; Conceicao, Ruben/L-2971-2014; Beatty, James/D-9310-2011; Sao Carlos Institute of Physics, IFSC/USP/M-2664-2016; Guarino, Fausto/I-3166-2012; Bonino, Raffaella/S-2367-2016; Rodriguez Frias, Maria /A-7608-2015; Oliva, Pietro/K-5915-2015; Inst. of Physics, Gleb Wataghin/A-9780-2017; De Mitri, Ivan/C-1728-2017; Rodriguez Fernandez, Gonzalo/C-1432-2014; Nosek, Dalibor/F-1129-2017; Fulgione, Walter/C-8255-2016; De Domenico, Manlio/B-5826-2014; Lozano-Bahilo, Julio/F-4881-2016; scuderi, mario/O-7019-2014; zas, enrique/I-5556-2015; Sarkar, Subir/G-5978-2011; 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Shellard, Ronald/0000-0002-2983-1815; Petrolini, Alessandro/0000-0003-0222-7594; D'Urso, Domenico/0000-0002-8215-4542; Brogueira, Pedro/0000-0001-6069-4073; Chinellato, Jose Augusto/0000-0002-3240-6270; Falcke, Heino/0000-0002-2526-6724; Ebr, Jan/0000-0001-8807-6162; Fauth, Anderson/0000-0001-7239-0288; Todero Peixoto, Carlos Jose/0000-0003-3669-8212; Chinellato, Carola Dobrigkeit /0000-0002-1236-0789; Coutu, Stephane/0000-0003-2923-2246; Ulrich, Ralf/0000-0002-2535-402X; Garcia, Beatriz/0000-0003-0919-2734; Dembinski, Hans/0000-0003-3337-3850; Del Peral, Luis/0000-0003-2580-5668; Bonino, Raffaella/0000-0002-4264-1215; Rizi, Vincenzo/0000-0002-5277-6527; Mussa, Roberto/0000-0002-0294-9071; Segreto, Alberto/0000-0001-7341-6603; Knapp, Johannes/0000-0003-1519-1383; Petrera, Sergio/0000-0002-6029-1255; Andringa, Sofia/0000-0002-6397-9207; Mantsch, Paul/0000-0002-8382-7745; Aramo, Carla/0000-0002-8412-3846; Anzalone, Anna/0000-0003-1849-198X; Yuan, Guofeng/0000-0002-1907-8815; de Jong, Sijbrand/0000-0002-3120-3367; Marsella, Giovanni/0000-0002-3152-8874; La Rosa, Giovanni/0000-0002-3931-2269; Asorey, Hernan/0000-0002-4559-8785; Navarro Quirante, Jose Luis/0000-0002-9915-1735; Aglietta, Marco/0000-0001-8354-5388; Maccarone, Maria Concetta/0000-0001-8722-0361; Kothandan, Divay/0000-0001-9048-7518; Castellina, Antonella/0000-0002-0045-2467; maldera, simone/0000-0002-0698-4421; Matthews, James/0000-0002-1832-4420; Sigl, Guenter/0000-0002-4396-645X; Gomez Berisso, Mariano/0000-0001-5530-0180; Salamida, Francesco/0000-0002-9306-8447; Catalano, Osvaldo/0000-0002-9554-4128; Ravignani, Diego/0000-0001-7410-8522; Conceicao, Ruben/0000-0003-4945-5340; Beatty, James/0000-0003-0481-4952; Guarino, Fausto/0000-0003-1427-9885; Rodriguez Frias, Maria /0000-0002-2550-4462; Oliva, Pietro/0000-0002-3572-3255; De Mitri, Ivan/0000-0002-8665-1730; Rodriguez Fernandez, Gonzalo/0000-0002-4683-230X; Nosek, Dalibor/0000-0001-6219-200X; Fulgione, Walter/0000-0002-2388-3809; De Domenico, Manlio/0000-0001-5158-8594; Lozano-Bahilo, Julio/0000-0003-0613-140X; scuderi, mario/0000-0001-9026-5317; zas, enrique/0000-0002-4430-8117; Sarkar, Subir/0000-0002-3542-858X; Moura Santos, Edivaldo/0000-0002-2818-8813; Gouffon, Philippe/0000-0001-7511-4115; de Almeida, Rogerio/0000-0003-3104-2724; Abreu, Pedro/0000-0002-9973-7314; Arqueros, Fernando/0000-0002-4930-9282; Blanco, Francisco/0000-0003-4332-434X; Bueno, Antonio/0000-0002-7439-4247; Parente, Gonzalo/0000-0003-2847-0461; dos Santos, Eva/0000-0002-0474-8863; Alvarez-Muniz, Jaime/0000-0002-2367-0803; Rosado, Jaime/0000-0001-8208-9480; Valino, Ines/0000-0001-7823-0154; Navas, Sergio/0000-0003-1688-5758; De Donato, Cinzia/0000-0002-9725-1281; Vazquez, Jose Ramon/0000-0001-9217-5219; Martello, Daniele/0000-0003-2046-3910; Insolia, Antonio/0000-0002-9040-1566; de Mello Neto, Joao/0000-0002-3234-6634 FU Comision Nacional de Energia Atomica; Fundacion Antorchas; Gobierno De La Provincia de Mendoza; Municipalidad de Malargue; NDM Holdings; Valle Las Lenas; Australian Research Council; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Financiadora de Estudos e Projetos (FINEP); Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Ministerio de Ciencia e Tecnologia (MCT), Brazil [AVCR AV0Z10100502, AVCR AV0Z10100522, GAAV KJB300100801, GAAV KJB100100904, MSMT-CR LA08016, MSMT-CR LC527, MSMT-CR 1M06002, MSM0021620859] FX The successful installation and commissioning of the Pierre Auger Observatory would not have been possible without the Strong commitment and effort from the technical and administrative staff in Malargue.; We are very grateful to the following agencies and organizations for financial support: Comision Nacional de Energia Atomica, Fundacion Antorchas, Gobierno De La Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas, in gratitude for their continuing cooperation over land access, Argentina; the Australian Research Council; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Ministerio de Ciencia e Tecnologia (MCT), Brazil: AVCR AV0Z10100502 and AV0Z10100522, GAAV KJB300100801 and KJB100100904, MSMT-CR LA08016, LC527, 1M06002, and MSM0021620859, Czech Republic; Centre de Calcul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), Conseil Regional Ile-de-France, Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), Departement Sciences de l'Univers (SDU-INSU/CNRS), France; Bundesministerium fur Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Wurttemberg, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium fur Wissenschaft und Forschung, Nordrhein-Westfalen, Ministerium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy; Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands; Ministry of Science and Higher Education, Grant Nos. I P03 D 014 30, N202 090 31/0623, and PAP/218/2006, Poland; Fundacao para a Ciencia e a Tecnologia, Portugal; Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia: Comunidad de Madrid, Consejeria de Educacion de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de Ciencia e Innovacion, Xunta de Galicia, Spain; Science and Technology Facilities Council, United Kingdom; Department of Energy, Contract No. DE-AC02-07CH11359, National Science Foundation, Grant No. 0450696, The Grainger Foundation USA; ALFA-EC I HELEN, European Union 6th Framework Program, Grant No. MEIF-CT-2005-025057, European Union 7th Framework Program, Grant No. PIEF-GA-2008-220240. and UNESCO. NR 66 TC 56 Z9 56 U1 0 U2 33 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0927-6505 EI 1873-2852 J9 ASTROPART PHYS JI Astropart Phys. PD MAR PY 2010 VL 33 IS 2 BP 108 EP 129 DI 10.1016/j.astropartphys.2009.12.005 PG 22 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA 568IB UT WOS:000275514800007 ER PT J AU Newberg, HJ Willett, BA Yanny, B Xu, Y AF Newberg, Heidi Jo Willett, Benjamin A. Yanny, Brian Xu, Yan TI THE ORBIT OF THE ORPHAN STREAM SO ASTROPHYSICAL JOURNAL LA English DT Article DE Galaxy: halo; Galaxy: structure; stars: kinematics and dynamics ID SAGITTARIUS DWARF GALAXY; DIGITAL SKY SURVEY; MILKY-WAY SATELLITE; N-BODY SIMULATIONS; DARK-MATTER HALO; GLOBULAR-CLUSTERS; GALACTIC HALO; SURVEY VIEW; SPECTROSCOPIC SURVEY; HORIZONTAL-BRANCH AB We use recent Sloan Extension for Galactic Understanding and Exploration (SEGUE) spectroscopy and the Sloan Digital Sky Survey (SDSS) and SEGUE imaging data to measure the sky position, distance, and radial velocities of stars in the tidal debris stream that is commonly referred to as the "Orphan Stream." We fit orbital parameters to the data and find a prograde orbit with an apogalacticon, perigalacticon, and eccentricity of 90 kpc, 16.4 kpc, and e = 0.7, respectively. Neither the dwarf galaxy UMa II nor the Complex A gas cloud has velocities consistent with a kinematic association with the Orphan Stream. It is possible that Segue-1 is associated with the Orphan Stream, but no other known Galactic clusters or dwarf galaxies in the Milky Way lie along its orbit. The detected portion of the stream ranges from 19 to 47 kpc from the Sun and is an indicator of the mass interior to these distances. There is a marked increase in the density of Orphan Stream stars near (l, b) = (253 degrees, 49 degrees), which could indicate the presence of the progenitor at the edge of the SDSS data. If this is the progenitor, then the detected portion of the Orphan Stream is a leading tidal tail. We find blue horizontal branch (BHB) stars and F turnoff stars associated with the Orphan Stream. The turnoff color is (g - r)(0) = 0.22. The BHB stars have a low metallicity of [Fe/H](WBG) = -2.1. The orbit is best fit to a halo potential with a halo plus disk mass of about 2.6 x 10(11) M(circle dot), integrated to 60 kpc from the Galactic center. Our fits are done to orbits rather than full N-body simulations; we show that if N-body simulations are used, the inferred mass of the galaxy would be slightly smaller. Our best fit is found with a logarithmic halo speed of v(halo) = 73 +/- 24 km s(-1), a disk+bulge mass of M(R < 60 kpc) = 1.3 x 10(11) M(circle dot), and a halo mass of M(R < 60 kpc) = 1.4 x 10(11) M(circle dot). However, we can find similar fits to the data that use a Navarro-Frenk-White halo profile or that have smaller disk masses and correspondingly larger halo masses. Distinguishing between different classes of models requires data over a larger range of distances. The Orphan Stream is projected to extend to 90 kpc from the Galactic center, and measurements of these distant parts of the stream would be a powerful probe of the mass of the Milky Way. C1 [Newberg, Heidi Jo; Willett, Benjamin A.] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA. [Yanny, Brian] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Xu, Yan] Chinese Acad Sci, Natl Astron Observ China, Beijing, Peoples R China. RP Newberg, HJ (reprint author), Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA. EM newbeh@rpi.edu FU National Science Foundation [AST 06-06618]; Alfred P. Sloan Foundation; Participating Institutions; National Science Foundation; U.S. Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England FX We acknowledge useful discussions with Steve Kent. We also acknowledge helpful comments from the referee which significantly improved the presentation of the results of this paper. This work was supported by the National Science Foundation grant AST 06-06618. Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web Site is http://www.sdss.org/. NR 56 TC 61 Z9 62 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 1 PY 2010 VL 711 IS 1 BP 32 EP 49 DI 10.1088/0004-637X/711/1/32 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 554EE UT WOS:000274417500004 ER PT J AU Abdo, AA Ackermann, M Ajello, M Baldini, L Ballet, J Barbiellini, G Bastieri, D Baughman, BM Bechtol, K Bellazzini, R Berenji, B Blandford, RD Bloom, ED Bonamente, E Borgland, AW Bregeon, J Brez, A Brigida, M Bruel, P Burnett, TH Buson, S Caliandro, GA Cameron, RA Camilo, F Caraveo, PA Casandjian, JM Cecchi, C Celik, O Chekhtman, A Cheung, CC Chiang, J Ciprini, S Claus, R Cognard, I Cohen-Tanugi, J Cominsky, LR Conrad, J Cutini, S de Angelis, A de Palma, F Digel, SW Dingus, BL Dormody, M Silva, EDE Drell, PS Dubois, R Dumora, D Farnier, C Favuzzi, C Fegan, SJ Focke, WB Fortin, P Frailis, M Freire, PCC Fukazawa, Y Funk, S Fusco, P Gargano, F Gasparrini, D Gehrels, N Germani, S Giavitto, G Giebels, B Giglietto, N Giordano, F Glanzman, T Godfrey, G Grenier, IA Grondin, MH Grove, JE Guillemot, L Guiriec, S Hanabata, Y Harding, AK Hays, E Hughes, RE Jackson, MS Johannesson, G Johnson, AS Johnson, TJ Johnson, WN Johnston, S Kamae, T Katagiri, H Kataoka, J Kawai, N Kerr, M Knodlseder, J Kocian, ML Kuss, M Lande, J Latronico, L Lemoine-Goumard, M Longo, F Loparco, F Lott, B Lovellette, MN Lubrano, P Makeev, A Marelli, M Mazziotta, MN McEnery, JE Meurer, C Michelson, PF Mitthumsiri, W Mizuno, T Moiseev, AA Monte, C Monzani, ME Morselli, A Moskalenko, IV Murgia, S Nolan, PL Norris, JP Nuss, E Ohsugi, T Omodei, N Orlando, E Ormes, JF Paneque, D Parent, D Pelassa, V Pepe, M Pesce-Rollins, M Piron, F Porter, TA Raino, S Rando, R Ray, PS Razzano, M Reimer, A Reimer, O Reposeur, T Ritz, S Roberts, MSE Rochester, LS Rodriguez, AY Ro'mani, RW Roth, M Ryde, F Sadrozinski, HFW Sanchez, D Sander, A Parkinson, PMS Scargle, JD Sgro, C Siskind, EJ Smith, DA Smith, PD Spandre, G Spinelli, P Strickman, MS Suson, DJ Tajima, H Takahashi, H Tanaka, T Thayer, JB Thayer, JG Theureau, G Thompson, DJ Tibaldo, L Tibolla, O Torres, DF Tosti, G Tramacere, A Uchiyama, Y Usher, TL Van Etten, A Vasileiou, V Venter, C Vilchez, N Vitale, V Waite, AP Wang, P Watters, K Winer, BL Wolff, MT Wood, KS Ylinen, T Ziegler, M AF Abdo, A. A. Ackermann, M. Ajello, M. Baldini, L. Ballet, J. Barbiellini, G. Bastieri, D. Baughman, B. M. Bechtol, K. Bellazzini, R. Berenji, B. Blandford, R. D. Bloom, E. D. Bonamente, E. Borgland, A. W. Bregeon, J. Brez, A. Brigida, M. Bruel, P. Burnett, T. H. Buson, S. Caliandro, G. A. Cameron, R. A. Camilo, F. Caraveo, P. A. Casandjian, J. M. Cecchi, C. Celik, Oe. Chekhtman, A. Cheung, C. C. Chiang, J. Ciprini, S. Claus, R. Cognard, I. Cohen-Tanugi, J. Cominsky, L. R. Conrad, J. Cutini, S. de Angelis, A. de Palma, F. Digel, S. W. Dingus, B. L. Dormody, M. do Couto e Silva, E. Drell, P. S. Dubois, R. Dumora, D. Farnier, C. Favuzzi, C. Fegan, S. J. Focke, W. B. Fortin, P. Frailis, M. Freire, P. C. C. Fukazawa, Y. Funk, S. Fusco, P. Gargano, F. Gasparrini, D. Gehrels, N. Germani, S. Giavitto, G. Giebels, B. Giglietto, N. Giordano, F. Glanzman, T. Godfrey, G. Grenier, I. A. Grondin, M. -H. Grove, J. E. Guillemot, L. Guiriec, S. Hanabata, Y. Harding, A. K. Hays, E. Hughes, R. E. Jackson, M. S. Johannesson, G. Johnson, A. S. Johnson, T. J. Johnson, W. N. Johnston, S. Kamae, T. Katagiri, H. Kataoka, J. Kawai, N. Kerr, M. Knoedlseder, J. Kocian, M. L. Kuss, M. Lande, J. Latronico, L. Lemoine-Goumard, M. Longo, F. Loparco, F. Lott, B. Lovellette, M. N. Lubrano, P. Makeev, A. Marelli, M. Mazziotta, M. N. McEnery, J. E. Meurer, C. Michelson, P. F. Mitthumsiri, W. Mizuno, T. Moiseev, A. A. Monte, C. Monzani, M. E. Morselli, A. Moskalenko, I. V. Murgia, S. Nolan, P. L. Norris, J. P. Nuss, E. Ohsugi, T. Omodei, N. Orlando, E. Ormes, J. F. Paneque, D. Parent, D. Pelassa, V. Pepe, M. Pesce-Rollins, M. Piron, F. Porter, T. A. Raino, S. Rando, R. Ray, P. S. Razzano, M. Reimer, A. Reimer, O. Reposeur, T. Ritz, S. Roberts, M. S. E. Rochester, L. S. Rodriguez, A. Y. Ro'mani, R. W. Roth, M. Ryde, F. Sadrozinski, H. F. -W. Sanchez, D. Sander, A. Parkinson, P. M. Saz Scargle, J. D. Sgro, C. Siskind, E. J. Smith, D. A. Smith, P. D. Spandre, G. Spinelli, P. Strickman, M. S. Suson, D. J. Tajima, H. Takahashi, H. Tanaka, T. Thayer, J. B. Thayer, J. G. Theureau, G. Thompson, D. J. Tibaldo, L. Tibolla, O. Torres, D. F. Tosti, G. Tramacere, A. Uchiyama, Y. Usher, T. L. Van Etten, A. Vasileiou, V. Venter, C. Vilchez, N. Vitale, V. Waite, A. P. Wang, P. Watters, K. Winer, B. L. Wolff, M. T. Wood, K. S. Ylinen, T. Ziegler, M. TI PSR J1907+0602: A RADIO-FAINT GAMMA-RAY PULSAR POWERING A BRIGHT TeV PULSAR WIND NEBULA SO ASTROPHYSICAL JOURNAL LA English DT Article DE gamma rays: general; pulsars: general; pulsars: individual (PSR J1907+0602); supernovae: individual (SNR G40.5-0.5) ID GALACTIC PLANE SURVEY; X-RAY; AREA TELESCOPE; REMNANT; LAT; PARALLAXES; G40.5-0.5; EMISSION; MILAGRO; CATALOG AB We present multiwavelength studies of the 106.6 ms gamma-ray pulsar PSR J1907+06 near the TeV source MGRO J1908+06. Timing observations with Fermi result in a precise position determination for the pulsar of R.A. = 19(h)07(m)54.(s)7(2), decl. = +06 degrees 02'16(2)'' placing the pulsar firmly within the TeV source extent, suggesting the TeV source is the pulsar wind nebula of PSR J1907+0602. Pulsed gamma-ray emission is clearly visible at energies from 100 MeV to above 10 GeV. The phase-averaged power-law index in the energy range E > 0.1 GeV is Gamma = 1.76 +/- 0.05 with an exponential cutoff energy E-c = 3.6 +/- 0.5 GeV. We present the energy-dependent gamma-ray pulsed light curve as well as limits on off-pulse emission associated with the TeV source. We also report the detection of very faint (flux density of similar or equal to 3.4 mu Jy) radio pulsations with the Arecibo telescope at 1.5 GHz having a dispersion measure DM = 82.1 +/- 1.1 cm(-3) pc. This indicates a distance of 3.2 +/- 0.6 kpc and a pseudo-luminosity of L-1400 similar or equal to 0.035 mJy kpc(2). A Chandra ACIS observation revealed an absorbed, possibly extended, compact (less than or similar to 4 '') X-ray source with significant nonthermal emission at R.A. = 19(h)07(m)54.(s)76, decl. = + 06 degrees 02'14.'' 6 with a flux of 2.3(-1.4)(+0.6) x 10(-14) erg cm(-2) s(-1). From archival ASCA observations, we place upper limits on any arcminute scale 2-10 keV X-ray emission of similar to 1 x 10(-13) erg cm(-2) s(-1). The implied distance to the pulsar is compatible with that of the supernova remnant G40.5-0.5, located on the far side of the TeV nebula from PSR J1907+0602, and the S74 molecular cloud on the nearer side which we discuss as potential birth sites. C1 [Abdo, A. A.; Chekhtman, A.; Grove, J. E.; Johnson, W. N.; Lovellette, M. N.; Makeev, A.; Ray, P. S.; Roberts, M. S. E.; Strickman, M. S.; Wolff, M. T.; Wood, K. S.] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. [Abdo, A. A.] USN, Acad Sci, Natl Res Council, Washington, DC 20001 USA. [Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocian, M. L.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Reimer, A.; Reimer, O.; Rochester, L. S.; Ro'mani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Van Etten, A.; Waite, A. P.; Wang, P.; Watters, K.] Stanford Univ, WW Hansen Expt Phys Lab, Kavli Inst Particle Astrophys & Cosmol, Dept Phys, Stanford, CA 94305 USA. [Ackermann, M.; Ajello, M.; Bechtol, K.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Borgland, A. W.; Cameron, R. A.; Chiang, J.; Claus, R.; Digel, S. W.; do Couto e Silva, E.; Drell, P. S.; Dubois, R.; Focke, W. B.; Funk, S.; Glanzman, T.; Godfrey, G.; Johannesson, G.; Johnson, A. S.; Kamae, T.; Kocian, M. L.; Lande, J.; Michelson, P. F.; Mitthumsiri, W.; Monzani, M. E.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Paneque, D.; Reimer, A.; Reimer, O.; Rochester, L. S.; Ro'mani, R. W.; Tajima, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Tramacere, A.; Uchiyama, Y.; Usher, T. L.; Van Etten, A.; Waite, A. P.; Wang, P.; Watters, K.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA. [Baldini, L.; Bellazzini, R.; Bregeon, J.; Brez, A.; Kuss, M.; Latronico, L.; Omodei, N.; Pesce-Rollins, M.; Razzano, M.; Sgro, C.; Spandre, G.] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy. [Ballet, J.; Casandjian, J. M.; Grenier, I. A.; Tibaldo, L.] Univ Paris Diderot, Lab AIM, CEA IRFU, CNRS,Serv Astrophys,CEA Saclay, F-91191 Gif Sur Yvette, France. [Barbiellini, G.; Giavitto, G.; Longo, F.] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy. [Barbiellini, G.; Longo, F.] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy. [Bastieri, D.; Rando, R.; Tibaldo, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Bastieri, D.; Buson, S.; Rando, R.; Tibaldo, L.] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy. [Baughman, B. M.; Hughes, R. E.; Sander, A.; Smith, P. D.; Winer, B. L.] Ohio State Univ, Dept Phys, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA. [Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy. [Bonamente, E.; Cecchi, C.; Ciprini, S.; Germani, S.; Lubrano, P.; Pepe, M.; Tosti, G.] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy. [Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Giglietto, N.; Giordano, F.; Loparco, F.; Monte, C.; Raino, S.; Spinelli, P.] Univ Politecn Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy. [Brigida, M.; Caliandro, G. A.; de Palma, F.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giglietto, N.; Giordano, F.; Loparco, F.; Mazziotta, M. N.; Monte, C.; Raino, S.; Spinelli, P.] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy. [Bruel, P.; Fegan, S. J.; Fortin, P.; Giebels, B.; Sanchez, D.] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France. [Burnett, T. H.; Kerr, M.; Roth, M.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Camilo, F.] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA. [Caraveo, P. A.; Marelli, M.] Ist Astrofis Spaziale & Fis Cosm, INAF, I-20133 Milan, Italy. [Celik, Oe.; Cheung, C. C.; Gehrels, N.; Harding, A. K.; Hays, E.; Johnson, T. J.; McEnery, J. E.; Moiseev, A. A.; Vasileiou, V.; Venter, C.] NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA. [Celik, Oe.; Vasileiou, V.] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA. [Celik, Oe.; Vasileiou, V.] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA. [Chekhtman, A.; Makeev, A.; Roberts, M. S. E.] George Mason Univ, Coll Sci, Ctr Earth Observing & Space Res, Fairfax, VA 22030 USA. [Cognard, I.; Theureau, G.] CNRS, UMR 6115, LPCE, F-45071 Orleans 02, France. [Cognard, I.] INSU, CNRS, Observ Paris, Stn Radioastron Nancay, F-18330 Nancay, France. [Cohen-Tanugi, J.; Farnier, C.; Nuss, E.; Pelassa, V.; Piron, F.] Univ Montpellier 2, Lab Phys Theor & Astroparticules, CNRS, IN2P3, Montpellier, France. [Cominsky, L. R.] Sonoma State Univ, Dept Phys & Astron, Rohnert Pk, CA 94928 USA. [Conrad, J.; Jackson, M. S.; Meurer, C.] Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden. [Conrad, J.; Jackson, M. S.; Meurer, C.; Ryde, F.; Ylinen, T.] Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden. [Cutini, S.; Gasparrini, D.] Sci Data Ctr, ASI, I-00044 Frascati, Roma, Italy. [de Angelis, A.; Frailis, M.] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy. [de Angelis, A.; Frailis, M.] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy. [Dingus, B. L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Dormody, M.; Porter, T. A.; Ritz, S.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Ziegler, M.] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA. [Dormody, M.; Porter, T. A.; Ritz, S.; Sadrozinski, H. F. -W.; Parkinson, P. M. Saz; Ziegler, M.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Univ Bordeaux, Ctr Etud Nucl Bordeaux Gradignan, UMR 5797, F-33175 Gradignan, France. [Dumora, D.; Grondin, M. -H.; Guillemot, L.; Lemoine-Goumard, M.; Lott, B.; Parent, D.; Reposeur, T.; Smith, D. A.] Ctr Etud Nucl Bordeaux Gradignan, CNRS, UMR 5797, IN2P3, F-33175 Gradignan, France. [Freire, P. C. C.] Arecibo Observ, Arecibo, PR 00612 USA. [Freire, P. C. C.] Max Planck Inst Radioastron, D-53121 Bonn, Germany. [Fukazawa, Y.; Hanabata, Y.; Katagiri, H.; Mizuno, T.; Ohsugi, T.; Takahashi, H.] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan. [Gehrels, N.; Johnson, T. J.; Moiseev, A. A.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Gehrels, N.; Johnson, T. J.; Moiseev, A. A.] Univ Maryland, Dept Astron, College Pk, MD 20742 USA. [Guiriec, S.] Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35899 USA. [Jackson, M. S.; Ryde, F.; Ylinen, T.] Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden. [Johnston, S.] CSIRO, Australia Telescope Natl Facil, Epping, NSW 1710, Australia. [Kataoka, J.; Kawai, N.] Tokyo Inst Technol, Dept Phys, Meguro, Tokyo 1528551, Japan. [Kataoka, J.] Waseda Univ, Shinjuku Ku, Tokyo 1698050, Japan. [Kawai, N.] RIKEN, Inst Phys & Chem Res, Cosm Radiat Lab, Wako, Saitama 3510198, Japan. [Knoedlseder, J.; Vilchez, N.] UPS, CNRS, Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France. [Morselli, A.; Vitale, V.] Ist Nazl Fis Nucl, Sez Roma Tor Vergata, I-00133 Rome, Italy. [Norris, J. P.; Ormes, J. F.] Univ Denver, Dept Phys & Astron, Denver, CO 80208 USA. [Orlando, E.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria. [Reimer, A.; Reimer, O.] Leopold Franzens Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria. [Roberts, M. S. E.] Eureka Sci, Oakland, CA 94602 USA. [Rodriguez, A. Y.; Torres, D. F.] CSIC, IEEC, Inst Ciencies Espai, Barcelona 08193, Spain. [Scargle, J. D.] NASA, Ames Res Ctr, Div Space Sci, Moffett Field, CA 94035 USA. [Siskind, E. J.] NYCB Real Time Comp Inc, Lattingtown, NY 11560 USA. [Suson, D. J.] Purdue Univ Calumet, Dept Chem & Phys, Hammond, IN 46323 USA. [Tibolla, O.] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany. [Torres, D. F.] ICREA, Barcelona, Spain. [Tramacere, A.] CIFS, I-10133 Turin, Italy. [Uchiyama, Y.] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2298510, Japan. [Venter, C.] North West Univ, Unit Space Phys, ZA-2520 Potchefstroom, South Africa. [Vitale, V.] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy. [Ylinen, T.] Univ Kalmar, Sch Pure & Appl Nat Sci, SE-39182 Kalmar, Sweden. RP Abdo, AA (reprint author), USN, Res Lab, Div Space Sci, Washington, DC 20375 USA. EM aous.abdo@nrl.navy.mil; malloryr@gmail.com; Kent.Wood@nrl.navy.mil RI Johnson, Neil/G-3309-2014; Reimer, Olaf/A-3117-2013; Funk, Stefan/B-7629-2015; Gargano, Fabio/O-8934-2015; Johannesson, Gudlaugur/O-8741-2015; Loparco, Francesco/O-8847-2015; Moskalenko, Igor/A-1301-2007; Mazziotta, Mario /O-8867-2015; Sgro, Carmelo/K-3395-2016; Torres, Diego/O-9422-2016; Venter, Christo/E-6884-2011; Thompson, David/D-2939-2012; Harding, Alice/D-3160-2012; Gehrels, Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Baldini, Luca/E-5396-2012; lubrano, pasquale/F-7269-2012; Morselli, Aldo/G-6769-2011; Nolan, Patrick/A-5582-2009; Kuss, Michael/H-8959-2012; giglietto, nicola/I-8951-2012; Tosti, Gino/E-9976-2013; Rando, Riccardo/M-7179-2013; Hays, Elizabeth/D-3257-2012 OI Reimer, Olaf/0000-0001-6953-1385; Funk, Stefan/0000-0002-2012-0080; Gargano, Fabio/0000-0002-5055-6395; Johannesson, Gudlaugur/0000-0003-1458-7036; Loparco, Francesco/0000-0002-1173-5673; Moskalenko, Igor/0000-0001-6141-458X; Mazziotta, Mario /0000-0001-9325-4672; Torres, Diego/0000-0002-1522-9065; Rando, Riccardo/0000-0001-6992-818X; Sgro', Carmelo/0000-0001-5676-6214; Dingus, Brenda/0000-0001-8451-7450; De Angelis, Alessandro/0000-0002-3288-2517; Gasparrini, Dario/0000-0002-5064-9495; Tramacere, Andrea/0000-0002-8186-3793; Baldini, Luca/0000-0002-9785-7726; Ray, Paul/0000-0002-5297-5278; Marelli, Martino/0000-0002-8017-0338; Frailis, Marco/0000-0002-7400-2135; Caraveo, Patrizia/0000-0003-2478-8018; Roberts, Mallory/0000-0002-9396-9720; Bastieri, Denis/0000-0002-6954-8862; Omodei, Nicola/0000-0002-5448-7577; Pesce-Rollins, Melissa/0000-0003-1790-8018; Cutini, Sara/0000-0002-1271-2924; Berenji, Bijan/0000-0002-4551-772X; Venter, Christo/0000-0002-2666-4812; Thompson, David/0000-0001-5217-9135; lubrano, pasquale/0000-0003-0221-4806; Morselli, Aldo/0000-0002-7704-9553; giglietto, nicola/0000-0002-9021-2888; FU National Aeronautics and Space Administration and the Department of Energy in the United States; Commissariat a l'Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in France; Agenzia Spaziale Italiana; Istituto Nazionale di Fisica Nucleare in Italy; Ministry of Education, Culture, Sports, Science and Technology (MEXT); High Energy Accelerator Research Organization (KEK); Japan Aerospace Exploration Agency (JAXA) in Japan; K. A. Wallenberg Foundation; Swedish National Space Board in Sweden; National Aeronautics and Space Administration [GO6-7136X]; NASA [NAS8-03060] FX The Fermi LAT Collaboration acknowledges the generous support of a number of agencies and institutes that have supported the Fermi LAT Collaboration. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat a l'Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation and the Swedish National Space Board in Sweden. The Arecibo Observatory is part of the National Astronomy and Ionosphere Center, which is operated by Cornell University under a cooperative agreement with the National Science Foundation. The National Radio Astronomy Observatory is a facility of the National Science Foundation Operated under cooperative agreement by Associated Universities, Inc. Support for this work was provided by the National Aeronautics and Space Administration through Chandra Award Number GO6-7136X issued by the Chandra X-Ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. This research has made use of software provided by the Chandra X-Ray Center in the application package CIAO. This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC), provided by NASA's Goddard Space Flight Center. NR 41 TC 49 Z9 49 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAR 1 PY 2010 VL 711 IS 1 BP 64 EP 74 DI 10.1088/0004-637X/711/1/64 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 554EE UT WOS:000274417500006 ER PT J AU Schawinski, K Urry, M Virani, S Coppi, P Bamford, SP Treister, E Lintott, CJ Sarzi, M Keel, WC Kaviraj, S Cardamone, CN Masters, KL Ross, NP Andreescu, D Murray, P Nichol, RC Raddick, MJ Slosar, A Szalay, AS Thomas, D Vandenberg, J AF Schawinski, Kevin Urry, Megan Virani, Shanil Coppi, Paolo Bamford, Steven P. Treister, Ezequiel Lintott, Chris J. Sarzi, Marc Keel, William C. Kaviraj, Sugata Cardamone, Carolin N. Masters, Karen L. Ross, Nicholas P. Andreescu, Dan Murray, Phil Nichol, Robert C. Raddick, M. Jordan Slosar, Anze Szalay, Alex S. Thomas, Daniel Vandenberg, Jan TI GALAXY ZOO: THE FUNDAMENTALLY DIFFERENT CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND THEIR EARLY-AND LATE-TYPE HOST GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Review DE galaxies: active; galaxies: evolution; galaxies: formation; galaxies: Seyfert ID ACTIVE GALACTIC NUCLEI; DIGITAL-SKY-SURVEY; STAR-FORMING GALAXIES; DWARF SEYFERT NUCLEI; DEEP FIELD-SOUTH; PRESSURE-DOMINATED PHOTOIONIZATION; EMISSION-LINE KINEMATICS; BH-SIGMA RELATION; RAY SELECTED AGN; X-RAY AB We use data from the Sloan Digital Sky Survey and visual classifications of morphology from the Galaxy Zoo project to study black hole growth in the nearby universe (z 0.05) and to break down the active galactic nucleus (AGN) host galaxy population by color, stellar mass, and morphology. We find that the black hole growth at luminosities L[O III] > 10(40) erg s(-1) in early- and late-type galaxies is fundamentally different. AGN host galaxies as a population have a broad range of stellar masses (10(10)-10(11) M-circle dot), reside in the green valley of the color-mass diagram and their central black holes have median masses around 10(6.5) M-circle dot. However, by comparing early- and late-type AGN host galaxies to their non-active counterparts, we find several key differences: in early-type galaxies, it is preferentially the galaxies with the least massive black holes that are growing, while in late-type galaxies, it is preferentially the most massive black holes that are growing. The duty cycle of AGNs in early-type galaxies is strongly peaked in the green valley below the low-mass end (10(10) M-circle dot) of the red sequence at stellar masses where there is a steady supply of blue cloud progenitors. The duty cycle of AGNs in late-type galaxies on the other hand peaks in massive (10(11) M-circle dot) green and red late-types which generally do not have a corresponding blue cloud population of similar mass. At high-Eddington ratios (L/L-Edd > 0.1), the only population with a substantial fraction of AGNs are the low-mass green valley early-type galaxies. Finally, the Milky Way likely resides in the "sweet spot" on the color-mass diagram where the AGN duty cycle of late-type galaxies is highest. We discuss the implications of these results for our understanding of the role of AGNs in the evolution of galaxies. C1 [Schawinski, Kevin; Urry, Megan] Yale Univ, Dept Phys, New Haven, CT 06511 USA. [Schawinski, Kevin; Urry, Megan; Virani, Shanil; Coppi, Paolo; Cardamone, Carolin N.] Yale Univ, Yale Ctr Astron & Astrophys, New Haven, CT 06520 USA. [Urry, Megan; Virani, Shanil; Coppi, Paolo; Cardamone, Carolin N.] Yale Univ, Dept Astron, New Haven, CT 06511 USA. [Bamford, Steven P.] Univ Nottingham, Ctr Astron & Particle Theory, Nottingham NG7 2RD, England. [Treister, Ezequiel] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA. [Lintott, Chris J.; Kaviraj, Sugata] Univ Oxford, Dept Phys, Oxford OX1 3RH, England. [Sarzi, Marc] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Keel, William C.] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA. [Kaviraj, Sugata] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England. [Masters, Karen L.; Nichol, Robert C.; Thomas, Daniel] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 2EG, Hants, England. [Ross, Nicholas P.] Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA. [Andreescu, Dan] LinkLab, Bronx, NY 10471 USA. [Murray, Phil] Fingerprint Digital Media, Newtownards BT23 7GY, Co Down, North Ireland. [Raddick, M. Jordan; Szalay, Alex S.; Vandenberg, Jan] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. [Slosar, Anze] Univ Calif Berkeley, Berkeley Ctr Cosmol Phys, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Slosar, Anze] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Slosar, Anze] Univ Ljubljana, Fac Math & Phys, Ljubljana 61000, Slovenia. RP Schawinski, K (reprint author), Yale Univ, Dept Phys, New Haven, CT 06511 USA. EM kevin.schawinski@yale.edu RI Bamford, Steven/E-8702-2010; OI Bamford, Steven/0000-0001-7821-7195; Schawinski, Kevin/0000-0001-5464-0888; Masters, Karen/0000-0003-0846-9578; Urry, Meg/0000-0002-0745-9792 FU NASA [PF9-00069, NAS8-03060]; Yale University; NSF [AST0407295]; Spitzer JPL [RSA1288440]; Natural Science and Engineering Research Council of Canada (NSERC); National Aeronautics and Space Administration [PF8-90055]; National Aeronautics Space Administration [NAS8-03060]; Royal Commission for the Exhibition of 1851; Imperial College London; Worcester College; University of Oxford; Peter and Patricia Gruber Foundation; Alfred P. Sloan Foundation; Participating Institutions; National Science Foundation; U.S. Department of Energy; National Aeronautics and Space Administration; Japanese Monbukagakusho; Max Planck Society; Higher Education Funding Council for England FX Support for the work of K.S. was provided by NASA through Einstein Postdoctoral Fellowship grant No. PF9-00069 issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. K.S. gratefully acknowledges earlier support from Yale University. Support from NSF grant AST0407295 and Spitzer JPL grant RSA1288440 is gratefully acknowledged. S.V. acknowledges support from a graduate research scholarship awarded by the Natural Science and Engineering Research Council of Canada (NSERC). Support for the work of E.T. was provided by the National Aeronautics and Space Administration through Chandra Postdoctoral Fellowship Award Number PF8-90055 issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of the National Aeronautics Space Administration under contract NAS8-03060. S.K. acknowledges support through a Research Fellowship from the Royal Commission for the Exhibition of 1851, a Junior Research Fellowship from Imperial College London, and Senior Research Fellowship from Worcester College, University of Oxford. K.L.M. acknowledges funding from the Peter and Patricia Gruber Foundation as the 2008 Peter and Patricia Gruber Foundation International Astronomical Union Fellow.; Funding for the SDSS and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. The SDSS Web Site is http://www.sdss.org/. NR 152 TC 108 Z9 108 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD MAR 1 PY 2010 VL 711 IS 1 BP 284 EP 302 DI 10.1088/0004-637X/711/1/284 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 554EE UT WOS:000274417500025 ER PT J AU Butler, NR Bloom, JS Poznanski, D AF Butler, Nathaniel R. Bloom, Joshua S. Poznanski, Dovi TI THE COSMIC RATE, LUMINOSITY FUNCTION, AND INTRINSIC CORRELATIONS OF LONG GAMMA-RAY BURSTS SO ASTROPHYSICAL JOURNAL LA English DT Review DE dark ages, reionization, first stars; gamma rays: general; methods: statistical ID STAR-FORMATION HISTORY; HIGH-REDSHIFT GRBS; UNIFIED JET MODEL; PEAK ENERGY; E-P,E-I-E-ISO CORRELATION; PROMPT EMISSION; SWIFT GRBS; EVOLUTION; DURATION; AFTERGLOWS AB We calculate durations and spectral parameters for 207 Swift bursts detected by the Burst Alert Telescope from 2007 April to 2009 August, including 67 events with measured redshifts. This is the first supplement to our catalog of 425 Swift gamma-ray bursts (GRBs; 147 with redshifts) starting from GRB 041220. This complete and extensive data set, analyzed with a unified methodology, allows us to conduct an accurate census of intrinsic GRB energetics, hardnesses, durations, and redshifts. The GRB world model we derive reproduces well the observables from both Swift and pre-Swift satellites. Comparing to the cosmic star formation rate, we estimate that only about 0.1% of massive stars explode as bright GRBs. There is strong evidence for evolution in the Swift population at intermediate and high-z, and we can rule out (at the 5 sigma level) that this is due to evolution in the luminosity function of GRBs. Instead, the Swift sample suggests a modest propensity for low metallicity, evidenced by an increase in the rate density with redshift. Treating the multivariate data and selection effects rigorously, we find a real, intrinsic correlation between E(iso) and E(pk) (and possibly also T(r45, z)); however, the correlation is not a narrow log-log relation and its observed appearance is strongly detector-dependent. We also estimate the high-z rate (3%-9% of GRBs at z beyond 5) and discuss the extent of a large missing population of low-E(pk,obs) X-ray flashes as well as a potentially large missing population of short-duration GRBs that will be probed by EXIST. C1 [Poznanski, Dovi] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Poznanski, Dovi] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA. FU GLAST Fellowship Program (NASA Cooperative Agreement) [NNG06DO90A]; US Department of Energy [DE-FC02-06ER41453] FX We thank D. Perley, D. Kocevksi, B. Cenko, M. Kistler, and N. Gehrels for comments on the manuscript and for useful discussions. Greatly appreciated also were helpful comments and criticisms from an anonymous referee. N. R. B. is supported through the GLAST Fellowship Program (NASA Cooperative Agreement: NNG06DO90A). D. P. is partially supported by US Department of Energy SciDAC grant DE-FC02-06ER41453. NR 185 TC 112 Z9 113 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 1 PY 2010 VL 711 IS 1 BP 495 EP 516 DI 10.1088/0004-637X/711/1/495 PG 22 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 554EE UT WOS:000274417500042 ER PT J AU van der Horst, AJ Connaughton, V Kouveliotou, C Gogus, E Kaneko, Y Wachter, S Briggs, MS Granot, J Ramirez-Ruiz, E Woods, PM Aptekar, RL Barthelmy, SD Cummings, JR Finger, MH Frederiks, DD Gehrels, N Gelino, CR Gelino, DM Golenetskii, S Hurley, K Krimm, HA Mazets, EP McEnery, JE Meegan, CA Oleynik, PP Palmer, DM Pal'shin, VD Pe'er, A Svinkin, D Ulanov, MV van der Klis, M von Kienlin, A Watts, AL Wilson-Hodge, CA AF van der Horst, A. J. Connaughton, V. Kouveliotou, C. Gogus, E. Kaneko, Y. Wachter, S. Briggs, M. S. Granot, J. Ramirez-Ruiz, E. Woods, P. M. Aptekar, R. L. Barthelmy, S. D. Cummings, J. R. Finger, M. H. Frederiks, D. D. Gehrels, N. Gelino, C. R. Gelino, D. M. Golenetskii, S. Hurley, K. Krimm, H. A. Mazets, E. P. McEnery, J. E. Meegan, C. A. Oleynik, P. P. Palmer, D. M. Pal'shin, V. D. Pe'er, A. Svinkin, D. Ulanov, M. V. van der Klis, M. von Kienlin, A. Watts, A. L. Wilson-Hodge, C. A. TI DISCOVERY OF A NEW SOFT GAMMA REPEATER: SGR J0418+5729 SO ASTROPHYSICAL JOURNAL LETTERS LA English DT Article DE pulsars: individual (SGR J0418+5729); stars: neutron; X-rays: bursts ID MAGNETAR AB On 2009 June 5, the Gamma-ray Burst Monitor (GBM) onboard the Fermi Gamma-ray Space Telescope triggered on two short and relatively dim bursts with spectral properties similar to soft gamma repeater (SGR) bursts. Independent localizations of the bursts by triangulation with the Konus-RF and with the Swift satellite confirmed their origin from the same, previously unknown, source. The subsequent discovery of X-ray pulsations with the Rossi X-ray Timing Explorer confirmed the magnetar nature of the new source, SGR J0418+5729. we describe here the Fermi/GBM observations, the discovery and the localization of this new SGR, and our infrared and Chandra X-ray observations. We also present a detailed temporal and spectral study of the two GBM bursts. SGR J0501+5729 is the second source discovered in the same region of the sky in the last year, the other one being SGR J0501+4516. Both sources lie in the direction of the galactic anti-center and presumably at the nearby distance of similar to 2 kpc (assuming they reside in the Perseus arm of our Galaxy). The near-threshold GBM detection of bursts from SGR J0418+5729 suggests that there may be more such "dim" SGRs throughout our Galaxy, possibly exceeding the population of "bright" SGRs. Finally, using sample statistics, we conclude that the number of observable active magnetars in our Galaxy at any given time is less than or similar to 10, in agreement with our earlier estimates. C1 [van der Horst, A. J.] NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35805 USA. [Connaughton, V.; Briggs, M. S.] Univ Alabama, Ctr Space Plasma & Aeron Res, Huntsville, AL 35805 USA. [Kouveliotou, C.; Wilson-Hodge, C. A.] NASA, George C Marshall Space Flight Ctr, Space Sci Off, Huntsville, AL 35812 USA. [Gogus, E.; Kaneko, Y.] Sabanci Univ, TR-34956 Istanbul, Turkey. [Wachter, S.] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA. [Granot, J.] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England. [Ramirez-Ruiz, E.] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA. [Woods, P. M.] Dynetics Inc, Huntsville, AL 35806 USA. [Aptekar, R. L.; Frederiks, D. D.; Golenetskii, S.; Mazets, E. P.; Oleynik, P. P.; Pal'shin, V. D.; Svinkin, D.; Ulanov, M. V.] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia. [Barthelmy, S. D.; Cummings, J. R.; Gehrels, N.; Krimm, H. A.; McEnery, J. E.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA. [Finger, M. H.; Meegan, C. A.] Natl Space Sci & Technol Ctr, Univ Space Res Assoc, Huntsville, AL 35805 USA. [Gelino, C. R.] CALTECH, NASA, Exoplanet Sci Inst, Pasadena, CA 91125 USA. [Hurley, K.] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA. [Palmer, D. M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Pe'er, A.] Space Telescope Sci Inst, Baltimore, MD 21218 USA. [van der Klis, M.; Watts, A. L.] Univ Amsterdam, Astron Inst Anton Pannekoek, NL-1090 GE Amsterdam, Netherlands. [von Kienlin, A.] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany. RP van der Horst, AJ (reprint author), NASA, George C Marshall Space Flight Ctr, Huntsville, AL 35805 USA. EM Alexander.J.VanDerHorst@nasa.gov RI Svinkin, Dmitry/C-1934-2014; Barthelmy, Scott/D-2943-2012; Gehrels, Neil/D-2971-2012; McEnery, Julie/D-6612-2012; Oleynik, Philipp/C-1104-2014; Frederiks, Dmitry/C-7612-2014; Pal'shin, Valentin/F-3973-2014; Ulanov, Mikhail/B-3467-2015; Aptekar, Raphail/B-3456-2015; Golenetskii, Sergey/B-3818-2015; OI Ulanov, Mikhail/0000-0002-0076-5228; Frederiks, Dmitry/0000-0002-1153-6340 FU NASA [GO9-0065Z, NNX09AO97G]; Russian Space Agency; RFBR [09-02-12080-oti_m]; EU FP6 Transfer of Knowledge Project "Astrophysics of Neutron Stars" [MTKD-CT-2006-042722]; Royal Society Wolfson Research Merit Award FX This publication is part of the GBM/Magnetar Key Project (NASA grant NNH07ZDA001-GLAST. PI C Kouvehotou) Chandra observations were carried out under Observation ID 10168, part of the proposal "ToO Observations of SGRs"(NASA grant GO9-0065Z, PI C Kouvehotou) We used data products from the Two Mocron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. We thank T. Jarrett (IPAC/Caltech) for use of his WIRC data reduction software. The Konus-RF experiment is supported by a Russian Space Agency contract and RFBR grant 09-02-12080-oti_m A.J.v.d.H. was supported by an appointment to the NASA Y.K. and E.G. acknowledge EU FP6 Transfer of Knowledge Project "Astrophysics of Neutron Stars" (MTKD-CT-2006-042722) J.G. gratefully acknowledges a Royal Society Wolfson Research Merit Award K.H. is grateful for support under the Swift Guest Investigator program, NASA grant NNX09AO97G. NR 19 TC 51 Z9 51 U1 0 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 2041-8205 J9 ASTROPHYS J LETT JI Astrophys. J. Lett. PD MAR 1 PY 2010 VL 711 IS 1 BP L1 EP L6 DI 10.1088/2041-8205/711/1/L1 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 566HW UT WOS:000275361700001 ER PT J AU Cantalupo, CM Borrill, JD Jaffe, AH Kisner, TS Stompor, R AF Cantalupo, C. M. Borrill, J. D. Jaffe, A. H. Kisner, T. S. Stompor, R. TI MADmap: A MASSIVELY PARALLEL MAXIMUM LIKELIHOOD COSMIC MICROWAVE BACKGROUND MAP-MAKER SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE cosmic background radiation; cosmology: observations; methods: data analysis; methods: numerical ID 30 GHZ DATA; CMB EXPERIMENTS; POWER SPECTRUM; MAKING ALGORITHM; SKY MAPS; PLANCK; ANISOTROPY; STRATEGY; NOISE AB MADmap is a software application used to produce maximum likelihood images of the sky from time-ordered data which include correlated noise, such as those gathered by cosmic microwave background (CMB) experiments. It works efficiently on platforms ranging from small workstations to the most massively parallel supercomputers. Map-making is a critical step in the analysis of all CMB data sets, and the maximum likelihood approach is the most accurate and widely applicable algorithm; however, it is a computationally challenging task. This challenge will only increase with the next generation of ground-based, balloon-borne, and satellite CMB polarization experiments. The faintness of the B-mode signal that these experiments seek to measure requires them to gather enormous data sets. MADmap is already being run on up to O(10(11)) time samples, O(10(8)) pixels, and O(10(4)) cores, with ongoing work to scale to the next generation of data sets and supercomputers. We describe MADmap's algorithm based around a preconditioned conjugate gradient solver, fast Fourier transforms, and sparse matrix operations. We highlight MADmap's ability to address problems typically encountered in the analysis of realistic CMB data sets and describe its application to simulations of the Planck and EBEX experiments. The massively parallel and distributed implementation is detailed and scaling complexities are given for the resources required. MADmap is capable of analyzing the largest data sets now being collected on computing resources currently available, and we argue that, given Moore's Law, MADmap will be capable of reducing the most massive projected data sets. C1 [Cantalupo, C. M.; Borrill, J. D.; Kisner, T. S.] Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA. [Jaffe, A. H.] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, London SW7 2AZ, England. [Stompor, R.] Univ Paris 07, CNRS, Lab AstroParticule & Cosmol, F-75205 Paris, France. RP Cantalupo, CM (reprint author), Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA. EM cmcantalupo@lbl.gov; jdborrill@lbl.gov; a.jaffe@imperial.ac.uk; tskisner@lbl.gov; radek@apc.univ-paris-diderot.fr FU NASA; DoE; National Energy Research Scientific Computing Center; Office of Science of the U. S. Department of Energy [DE-AC02-05CH11231]; French National Research Agency (ANR) [ANR-09-COSI-009] FX We are grateful to NASA (through the Planck Project) and DoE for funding and facilities. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U. S. Department of Energy under Contract DE-AC02-05CH11231. Thanks to Charles Lawrence for his help and guidance in this project and the submission of this paper. We acknowledge the use of simulations of telescope pointing provided by the Planck and EBEX collaborations. In particular, the simulation of the Planck mission was done by the simmission (Reinecke et al. 2006) application primarily written by Daniel Mortlock and managed by Martin Reinecke. The sky scanned in the Planck simulation was provided by the Planck collaboration and is the model derived by the Planck foregrounds working group. The EBEX telescope pointing simulation was provided by Samuel Leach, and the sky simulation was provided by Nicolas Ponthieu. The parameterization of the noise properties of EBEXwas provided by Shaul Hanany, and the simulationwas generally a product of the EBEX data analysis working group. R. S. acknowledges partial support from the French National Research Agency (ANR) through COSINUS program (project MIDAS No. ANR-09-COSI-009). NR 45 TC 49 Z9 49 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD MAR PY 2010 VL 187 IS 1 BP 212 EP 227 DI 10.1088/0067-0049/187/1/212 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA 564CZ UT WOS:000275192200008 ER PT J AU McIntire, TM Ryder, OS Gassman, PL Zhu, Z Ghosal, S Finlayson-Pitts, BJ AF McIntire, T. M. Ryder, O. S. Gassman, P. L. Zhu, Z. Ghosal, S. Finlayson-Pitts, B. J. TI Why ozonolysis may not increase the hydrophilicity of particles SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE Ozonolysis; Organic oxidation; Water uptake; NanoSIMS; FTIR; Secondary organic aerosol; Self-assembled monolayer ID SELF-ASSEMBLED MONOLAYERS; PERIODATE-PERMANGANATE OXIDATIONS; AIR-WATER-INTERFACE; GAS-PHASE PRODUCTS; ORGANIC AEROSOLS; LANGMUIR-BLODGETT; OZONE OXIDATION; ADSORBED FILMS; OLEIC-ACID; SILICON AB It is commonly assumed that atmospheric oxidation of hydrocarbon particles or hydrocarbon coatings on particles leads to polar products and increased water uptake, altering atmospheric visibility and increasing the likelihood they will act as cloud condensation nuclei (CCN). We show here through laboratory experiments that increased water uptake depends on the 3-dimensional structure of the particles. Laboratory studies of particles formed during ozonolysis of surface-bound alkenes, present as terminally unsaturated self-assembled monolayers (C8 = SAM) on a silica substrate, were carried out at room temperature and 1 atm pressure. SAMs were exposed to similar to 10(13) O(3) molecules cm(-3) for 40 min and resultant particles were analyzed using single particle Fourier transform infrared micro-spectroscopy (micro-FTIR) and secondary ion mass spectroscopy (SIMS). Spectroscopy results show that -COOH and other polar groups are formed but are buried inside a hydrophobic shell, consistent with earlier observations (McIntire et al., 2005; Moussa et al., 2009) that water uptake does not increase after reaction of the terminal alkene with O(3). These insights into the 3-D structure of particles formed on oxidation have important implications for the ability of secondary organic aerosols to act as CCN. In addition, the nature of the surface of the particles is expected to determine their uptake into biological systems such as the surface of the lungs. (C) 2009 Elsevier Ltd. All rights reserved. C1 [McIntire, T. M.; Ryder, O. S.; Finlayson-Pitts, B. J.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Gassman, P. L.; Zhu, Z.] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. [Ghosal, S.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Finlayson-Pitts, BJ (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. EM bjfinlay@uci.edu RI Zhu, Zihua/K-7652-2012; OI ryder, olivia/0000-0002-1468-6694 FU National Science Foundation [CHE-0431312]; U.S. Department of Energy Office of Biological and Environmental Research [DE-FG02-05ER64000]; Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL); U.S. Department of Energy by Battelle Memorial Institute [DEAC06-76RL0 1830] FX We gratefully acknowledge financial support from the National Science Foundation through an Environmental Molecular Science Institute Grant (CHE-0431312) and the U.S. Department of Energy Office of Biological and Environmental Research (Grant No. DE-FG02-05ER64000). We thank Dr. Quiguang Li for assistance with gold coating of the oxidized samples, R.L. Grimm, N. Hess and E.O. Potma, for useful discussions, and M.J. Ezell, S.N. Johnson and J.D. Raff for assistance with preparation of Fig. 5. Parts of this work were performed at EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is supported by the U.S. Department of Energy by Battelle Memorial Institute under contract no. DEAC06-76RL0 1830. NR 46 TC 14 Z9 14 U1 2 U2 26 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD MAR PY 2010 VL 44 IS 7 BP 939 EP 944 DI 10.1016/j.atmosenv.2009.11.009 PG 6 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 578SW UT WOS:000276316700008 ER PT J AU Nguyen, TB Bateman, AP Bones, DL Nizkorodov, SA Laskin, J Laskin, A AF Nguyen, Tran B. Bateman, Adam P. Bones, David L. Nizkorodov, Sergey A. Laskin, Julia Laskin, Alexander TI High-resolution mass spectrometry analysis of secondary organic aerosol generated by ozonolysis of isoprene SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE Biogenic aerosol; SOA; Gas-particle partitioning; Peroxides; Carbonyls; Organic carbon; Oligomers ID GAS-PHASE REACTIONS; OH RADICALS; MOLECULAR CHARACTERIZATION; CHEMICAL-COMPOSITION; PARTICULATE MATTER; OLIGOMER FORMATION; ALPHA-PINENE; ACCRETION REACTIONS; OXIDATION-PRODUCTS; ALKENE OZONOLYSIS AB The chemical composition of secondary organic aerosol (SOA) generated from the ozonolysis of isoprene (C5H8) in the presence of an OH scavenger was examined using high-resolution electrospray ionization mass spectrometry (ESI-MS) in the mass range m/z = 50-1000. The chemical composition of SOA is complex, with more than 1000 assigned peaks observed in the positive and negative ion mode spectra. Only a small fraction of peaks correspond to known products of isoprene oxidation, such as pyruvic acid, glycolic acid, methylglyoxal, etc. The absolute majority of the detected peaks correspond to highly oxidized oligomeric constituents of SOA, with an average OX molar ratio of 0.6. The corresponding organic mass (OM) to organic oxygen (00) ratio is 2.4. Approximately 8% of oxygen atoms in SOA are in the form of peroxides, as quantified with an iodide test. Double bond equivalency (DBE) factors, representing the sum of all double bonds and rings, increase by 1 for every 1-2 additional carbon atoms in the molecule. The number of unoxidized C=C double bonds is estimated to be less than 10%; the remaining DBE is due to C=O carbonyl groups. Kendrick analysis suggests that the prevalent oligomer building blocks are small carbonyls with a C-1-C-2 skeleton. Formaldehyde (CH2O) is identified as the most common repetitive building block in the observed oligomeric compounds. (C) 2009 Elsevier Ltd. All rights reserved. C1 [Nguyen, Tran B.; Bateman, Adam P.; Bones, David L.; Nizkorodov, Sergey A.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Laskin, Julia] Pacific NW Natl Lab, Div Chem & Mat Sci, Richland, WA 99352 USA. [Laskin, Alexander] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA. RP Nizkorodov, SA (reprint author), Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. EM nizkorod@uci.edu RI Nizkorodov, Sergey/I-4120-2014; Nguyen, Tran/E-9849-2012; Laskin, Julia/H-9974-2012; Bateman, Adam/G-2804-2015; Laskin, Alexander/I-2574-2012 OI Nizkorodov, Sergey/0000-0003-0891-0052; Bones, David/0000-0003-1394-023X; Laskin, Julia/0000-0002-4533-9644; Bateman, Adam/0000-0003-3514-0727; Laskin, Alexander/0000-0002-7836-8417 FU NSF [ATM-0831518, CHE-0909227]; Camille & Henry Dreyfus Foundation; U.S. Department of Energy [DE-AC06-76RL0 1830] FX The UCI group gratefully acknowledges support by the NSF grant ATM-0831518 and by the Camille & Henry Dreyfus Foundation. The postdoctoral fellowship for David Bones was supported by NSF CHE-0909227. The PNNL group acknowledges support provided by the operational budget of W. R. Wiley Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the Office of Biological and Environmental Research and located at PNNL. PNNL is operated for the U.S. Department of Energy by Battelle Memorial Institute under contract no. DE-AC06-76RL0 1830. Adam Bateman and Sergey Nizkoroclov acknowledge sponsorship provided by the 2008 Summer Research Institute organized at PNNL. NR 85 TC 68 Z9 69 U1 3 U2 67 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 EI 1873-2844 J9 ATMOS ENVIRON JI Atmos. Environ. PD MAR PY 2010 VL 44 IS 8 BP 1032 EP 1042 DI 10.1016/j.atmosenv.2009.12.019 PG 11 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 568HF UT WOS:000275512500004 ER PT J AU Zelenyuk, A Ezell, MJ Perraud, V Johnson, SN Bruns, EA Yu, Y Imre, D Alexander, ML Finlayson-Pitts, BJ AF Zelenyuk, Alla Ezell, Michael J. Perraud, Veronique Johnson, Stanley N. Bruns, Emily A. Yu, Yong Imre, Dan Alexander, M. Liz Finlayson-Pitts, Barbara J. TI Characterization of organic coatings on hygroscopic salt particles and their atmospheric impacts SO ATMOSPHERIC ENVIRONMENT LA English DT Article DE Secondary organic aerosols; Single particle mass spectrometry; Density ID ALPHA-PINENE; DENSITY; WATER; AEROSOLS; SIZE; OZONOLYSIS; MORPHOLOGY; CHEMISTRY; OXIDATION; SPECTRA AB The photooxidation of alpha-pinene in the presence of NO(2), with and without added NaNO(3) seed particles, has been studied in a large-diameter flow tube. Particles formed by homogeneous nucleation and by condensation on the pre-existing seeds were sampled at various stages of the reaction, dried using four diffusion dryers, size selected at different mobility diameters (d(m)) using a differential mobility analyzer (DMA), and characterized with a single particle mass spectrometer (SPLAT II). It was found that homogeneously nucleated particles are spherical, have a density (rho) of 1.25 +/- 0.02 g cm(-3) (+/- 2 sigma) and contain a significant amount of organic nitrates. The mass spectra of the low volatility products condensed on the NaNO(3) seed particles were found to be virtually the same as in the case of homogeneous nucleation. The data show that the presence of even a submonolayer of organics on the NaNO(3) particles causes water retention that leads to a decrease in particle density and that the amount of water retained increases with organic coating thickness. Thicker coatings appear to inhibit water evaporation from the particle seeds altogether. This suggests that in the atmosphere, where low volatility organics are plentiful, some hygroscopic salts will retain water and have different densities and refractive indices than expected in the absence of the organic coating. This water retention combined with the organic shell on the particles can potentially impact light scattering by these particles and activity as cloud condensation nuclei (CCN), as well as heterogeneous chemistry and photochemistry on the particles. (C) 2010 Elsevier Ltd. All rights reserved. C1 [Zelenyuk, Alla; Alexander, M. Liz] Pacific NW Natl Lab, Richland, WA 99352 USA. [Ezell, Michael J.; Perraud, Veronique; Johnson, Stanley N.; Bruns, Emily A.; Yu, Yong; Finlayson-Pitts, Barbara J.] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA. [Imre, Dan] Imre Consulting, Richland, WA 99352 USA. RP Zelenyuk, A (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM alla.zelenyuk@pnl.gov RI Yu, Yong/G-6445-2010; bruns, emily/A-4558-2013; Perraud, Veronique/F-2830-2016 OI Perraud, Veronique/0000-0003-1247-9787 FU US Department of Energy Office of Biological and Environmental Research [DE-FG02-05ER64000, DEAC06-76RL0 1830]; Office of Basic Energy Sciences, Chemical Sciences Division; National Science Foundation through AirUCI; Environmental Molecular Science Institute [CHE-0431312]; Environmental Molecular Sciences Laboratory; US Department of Energy's Office of Biological and Environmental Research at Pacific Northwest National Laboratory (PNNL) FX We are grateful to the US Department of Energy Office of Biological and Environmental Research (Grant No. DE-FG02-05ER64000), the Office of Basic Energy Sciences, Chemical Sciences Division, the National Science Foundation through AirUCI, an Environmental Molecular Science Institute (Grant No. CHE-0431312), and the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the US Department of Energy's Office of Biological and Environmental Research at Pacific Northwest National Laboratory (PNNL), for support of this work. PNNL is operated by the US Department of Energy by Battelle Memorial Institute under contract no. DEAC06-76RL0 1830. NR 26 TC 16 Z9 16 U1 1 U2 34 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 1352-2310 J9 ATMOS ENVIRON JI Atmos. Environ. PD MAR PY 2010 VL 44 IS 9 BP 1209 EP 1218 DI 10.1016/j.atmosenv.2009.11.047 PG 10 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA 574QA UT WOS:000276005500009 ER PT J AU Keck, BD Ognibene, T Vogel, JS AF Keck, Bradly D. Ognibene, Ted Vogel, John S. TI Analytical validation of accelerator mass spectrometry for pharmaceutical development SO BIOANALYSIS LA English DT Review ID C-14 MEASUREMENTS; AMS; RADIOCARBON; BINDING; QUANTITATION; GRAPHITE; HOLOCENE; SAMPLES; HUMANS; DRUGS AB The validation parameters for pharmaceutical analyses were examined for the accelerator mass spectrometry measurement of (14)C/C ratio, independent of chemical separation procedures. The isotope ratio measurement was specific (owing to the (14)C label), stable across samples storage conditions for at least 1 year, linear over four orders of magnitude with an analytical range from 0.1 Modern to at least 2000 Modern (instrument specific). Furthermore, accuracy was excellent (between 1and 3%), while precision expressed as coefficient of variation was between I and 6% determined primarily by radiocarbon content and the time spent analyzing a sample. Sensitivity, expressed as LOD and LLOQ was 1 and 10 attomoles of (14)C, respectively (which can be expressed as compound equivalents) and for a typical small molecule labeled at 10% incorporated with (14)C corresponds to 30 fg equivalents. Accelerator mass spectrometry provides a sensitive, accurate and precise method of measuring drug compounds in biological matrices. C1 [Keck, Bradly D.] Procter & Gamble Pharmaceut, Mason, OH 45040 USA. [Keck, Bradly D.; Vogel, John S.] Vitalea Sci, Davis, CA 95618 USA. [Ognibene, Ted; Vogel, John S.] Lawrence Livermore Natl Lab, Ctr AMS, Livermore, CA 94551 USA. RP Keck, BD (reprint author), Procter & Gamble Pharmaceut, 8700 Mason Montgomery Rd, Mason, OH 45040 USA. FU US Department of Energy by University of California, Lawrence Livermore National Laboratory (LLNL) [W-7405-Eng-48]; NIH National Center for Research Resources at the Research Resource for Biomedical AMS [P41-RR013641]; Vitalea Science (VS) FX Some of this work was performed under the auspices of the US Department of Energy by University of California, Lawrence Livermore National Laboratory (LLNL) under Contract W-7405-Eng-48. Colleagues at LLNL who performed work leading to the data shown here include Kurt Haack, Bruce Buchholz, and Darren Hillegonds. Portions of this work were supported by the NIH National Center for Research Resources at the Research Resource for Biomedical AMS (P41-RR013641). Many samples, data, and carbon analyses were done by, or under contract with, Procter & Gamble Pharmaceuticals. Samples, data, and support in composing the manuscript were provided by Vitalea Science (Dr Steve Dueker).; Bradly D Keck is an employee of Vitalea Science (VS), which funds his authorship. Bradly D Keck was an employee of Procter & Gamble Pharmaceuticals during much of this work, who sponsored many of the sample analyses referenced. Ted Ognibene is an employee of Lawrence Livermore National Laboratory and holds a patent licensed by VS but no other financial interests. John S Vogel was an employee of LLNL during much of this work but is now an unpaid advisor to VS and possesses equity in the Company, which licenses several of his patents. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties. NR 43 TC 15 Z9 15 U1 0 U2 5 PU FUTURE SCI LTD PI LONDON PA UNITED HOUSE, 2 ALBERT PL, LONDON, N3 1QB, ENGLAND SN 1757-6180 J9 BIOANALYSIS JI Bioanalysis PD MAR PY 2010 VL 2 IS 3 BP 469 EP 485 DI 10.4155/BIO.10.14 PG 17 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA 644VR UT WOS:000281410300018 PM 21083256 ER PT J AU Slater, S Keegstra, K Donohue, TJ AF Slater, Steven Keegstra, Kenneth Donohue, Timothy J. TI The US Department of Energy Great Lakes Bioenergy Research Center: Midwestern Biomass as a Resource for Renewable Fuels SO BIOENERGY RESEARCH LA English DT Article DE Bioenergy; Biofuels; Sustainability ID LIGNOCELLULOSIC BIOMASS; BIOFUELS AB The Great Lakes Bioenergy Research Center is one of three Bioenergy Research Centers establish by the US Department of Energy and the only one based at an academic institution. The Center's mission is to perform basic and applied science to enable economically and environmentally sustainable production of liquid fuels derived from biomass. The research is focused on converting plant biomass into soluble sugars and the sugars into fuels. A large group focused on sustainability informs and guides the applied research to ensure that new technology will provide the required environmental benefits. C1 [Slater, Steven; Donohue, Timothy J.] Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA. [Keegstra, Kenneth] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. [Keegstra, Kenneth] Michigan State Univ, DOE Plant Res Lab, E Lansing, MI 48824 USA. [Donohue, Timothy J.] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA. RP Slater, S (reprint author), Univ Wisconsin, DOE Great Lakes Bioenergy Res Ctr, 1550 Linden Dr, Madison, WI 53706 USA. EM scslater@glbrc.wisc.edu OI Donohue, Timothy/0000-0001-8738-2467 FU US Department of Energy [DE-FC02-07ER64494] FX This work was supported by the US Department of Energy through the Great Lakes Bioenergy Research Center Grant DE-FC02-07ER64494. NR 17 TC 4 Z9 5 U1 0 U2 11 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 3 EP 5 DI 10.1007/s12155-009-9075-5 PG 3 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400002 ER PT J AU Gardiner, MA Tuell, JK Isaacs, R Gibbs, J Ascher, JS Landis, DA AF Gardiner, Mary A. Tuell, Julianna K. Isaacs, Rufus Gibbs, Jason Ascher, John S. Landis, Douglas A. TI Implications of Three Biofuel Crops for Beneficial Arthropods in Agricultural Landscapes SO BIOENERGY RESEARCH LA English DT Article DE Agricultural landscapes; Bees; Biodiversity; Ecosystem services; Natural enemies ID BIOLOGICAL-CONTROL; FOREST ECOSYSTEMS; UNITED-STATES; DIVERSITY; SWITCHGRASS; COLEOPTERA; SERVICES; COCCINELLIDAE; COMMUNITIES; PREDATION AB Production of biofuel feedstocks in agricultural landscapes will result in land use changes that may have major implications for arthropod-mediated ecosystem services such as pollination and pest suppression. By comparing the abundance and diversity of insect pollinators and generalist natural enemies in three model biofuel crops: corn, switch-grass, and mixed prairie, we tested the hypothesis that biofuel crops comprised of more diverse plant communities would support increased levels of beneficial insects. These three biofuel crops contained a diverse bee community comprised of 75 species. Overall, bees were three to four times more abundant in switchgrass and prairie than in corn, with members of the sweat bee (Halictidae) and small carpenter bee (Ceratina spp.) groups the most abundant. Switchgrass and prairie had significantly greater bee species richness than corn during the July sampling period. The natural enemy community at these sites was dominated by lady beetles (Coccinellidae), long-legged flies (Dolichopodidae), and hover flies (Syrphidae) which varied in their response to crop type. Coccinellids were generally most abundant in prairie and switchgrass, with the exception of the pollen feeding Coleomegilla maculata that was most abundant in corn. Several rare or declining coccinellid species were detected in prairie and switchgrass sites. Dolichopodidae were more abundant in prairie and switchgrass while Syrphidae showed no significant response to crop type. Our results indicate that beneficial insects generally responded positively to the increased vegetational diversity of prairie and switchgrass sites; however, when managed as a dedicated biofuel crop, plant and arthropod diversity in switchgrass may decrease. Our findings support the hypothesis that vegetationally diverse biofuel crops support higher abundance and diversity of beneficial insects. Future policy regarding the production of biofuel feedstocks should consider the ecosystem services that different biofuel crops may support in agricultural landscapes. C1 [Gardiner, Mary A.; Landis, Douglas A.] Michigan State Univ, Dept Entomol, Ctr Integrated Plant Syst, E Lansing, MI 48824 USA. [Gardiner, Mary A.; Landis, Douglas A.] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, Ctr Integrated Plant Syst, E Lansing, MI 48824 USA. [Tuell, Julianna K.; Isaacs, Rufus] Michigan State Univ, Dept Entomol, Ctr Integrated Plant Syst 202, E Lansing, MI 48824 USA. [Tuell, Julianna K.; Isaacs, Rufus] Michigan State Univ, DOE Great Lakes Bioenergy Res Ctr, Ctr Integrated Plant Syst 202, E Lansing, MI 48824 USA. [Gibbs, Jason] York Univ, Toronto, ON M3J 1P3, Canada. [Ascher, John S.] Amer Museum Nat Hist, Div Invertebrate Zool, New York, NY 10024 USA. RP Landis, DA (reprint author), Michigan State Univ, Dept Entomol, Ctr Integrated Plant Syst, E Lansing, MI 48824 USA. EM landisd@msu.edu RI Gardiner, Mary/B-3733-2012; Gibbs, Jason/H-6963-2012; Ascher, John/D-1554-2014; OI Gibbs, Jason/0000-0002-4945-5423 FU Department of Energy Great Lakes Bioenergy Research Center (DOE Office of Science BER) [DE-FC02-07ER64494]; USDA-NRI Program [2007-3530218272]; Michigan Agricultural Experiment Station FX We thank Lauren Bailey, Nick Longbucco, Denae Baker, Michael Bigsby, Laura Mace, Becky McCormack, Katy Bigsby, Scott Prajzner, Courtney Hendon, and Grace O'Connor for their assistance with the fieldwork. Thanks also to Kay Gross, Carol Baker, and Pam Moseley for assistance with plant sampling and identification and Bruce Robertson for plant structural data. Ben Werling and three anonymous reviewers provided valuable comments on an earlier draft. This work was funded in part by the Department of Energy Great Lakes Bioenergy Research Center (DOE Office of Science BER DE-FC02-07ER64494), the USDA-NRI Program (Award 2007-3530218272), and the Michigan Agricultural Experiment Station. NR 54 TC 64 Z9 66 U1 2 U2 72 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 6 EP 19 DI 10.1007/s12155-009-9065-7 PG 14 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400003 ER PT J AU Jesus, ED Susilawati, E Smith, SL Wang, Q Chai, BL Farris, R Rodrigues, JLM Thelen, KD Tiedje, JM AF Jesus, Ederson da C. Susilawati, Endang Smith, Stephanie L. Wang, Qiong Chai, Benli Farris, Ryan Rodrigues, Jorge L. M. Thelen, Kurt D. Tiedje, James M. TI Bacterial Communities in the Rhizosphere of Biofuel Crops Grown on Marginal Lands as Evaluated by 16S rRNA Gene Pyrosequences SO BIOENERGY RESEARCH LA English DT Article DE Rhizosphere; Community structure; Diversity; Biofuel crops ID GRADIENT GEL-ELECTROPHORESIS; GRASSLAND SOILS; DIVERSITY; PLANT; ACIDOBACTERIA; TEMPERATURE; BULK AB Microbes are key components of the soil environment and are important contributors to the sustainability of agricultural systems, which is especially significant for biofuel crops growing on marginal lands. We studied bacterial communities in the rhizosphere of five biofuel crops cultivated in four locations in Michigan to determine which factors were correlated to changes in the structure of those communities. Three of these sites were marginal lands in that two were not suitable for conventional agriculture and one was regulated as a brownfield due to prior industrial pollution. Bacterial community composition and structure were assessed by 454 sequencing of the 16S rRNA gene. A total of 387,111 sequences were used for multivariate statistical analysis and to test for correlation between community structure and environmental variables such as plant species, soil attributes, and location. The most abundant bacterial phyla found in the rhizosphere of all crops were Acidobacteria, Proteobacteria, Actinobacteria, and Verruco-microbia. Bacterial communities grouped by location rather than by crop and their structures were correlated to soil attributes, principally pH, organic matter, and nutrients. The effect of plant species was low but significant, and interactions between locations, plant species, and soil attributes account for most of the explained variation in the structure of bacterial communities, showing a complex relationship between bacterial populations and their environment. Bacterial diversity was higher in the agricultural sites compared to adjacent forest sites, indicating that the cultivation of those biofuel crops increased the rRNA diversity. C1 [Jesus, Ederson da C.; Susilawati, Endang; Tiedje, James M.] Michigan State Univ, Ctr Microbial Ecol, DOE Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. [Smith, Stephanie L.; Thelen, Kurt D.] Michigan State Univ, Dept Crop & Soil Sci, DOE Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. [Wang, Qiong; Chai, Benli; Farris, Ryan] Michigan State Univ, Ribosomal Database Project, E Lansing, MI 48824 USA. [Rodrigues, Jorge L. M.] Univ Texas Arlington, Dept Biol, Arlington, TX 76019 USA. RP Jesus, ED (reprint author), Michigan State Univ, Ctr Microbial Ecol, DOE Great Lakes Bioenergy Res Ctr, 540 Plant & Soil Sci Bldg, E Lansing, MI 48824 USA. EM ederson@msu.edu; endangsusilawati@gmail.com; smith579@msu.edu; wangqion@msu.edu; chaibenl@msu.edu; farrisry@msu.edu; jorge@uta.edu; thelenk3@msu.edu; tiedje@msu.edu RI Jesus, Ederson/D-1690-2010 FU DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science) [DE-FC02-07ER64494] FX This work was funded by the DOE Great Lakes Bioenergy Research Center (DOE BER Office of Science DE-FC02-07ER64494). We also thank Dr. Jari Oksanen (University of Oulu, Finland), Dr. Pedro Peres-Neto (Universite du Quebec a Montreal) and Dr. Pierre Legendre (Universite de Montreal, Canada) for their clarifications about the variation partitioning analysis. NR 31 TC 18 Z9 20 U1 0 U2 21 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 20 EP 27 DI 10.1007/s12155-009-9073-7 PG 8 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400004 ER PT J AU Schwartz, CJ Doyle, MR Manzaneda, AJ Rey, PJ Mitchell-Olds, T Amasino, RM AF Schwartz, Christopher J. Doyle, Mark R. Manzaneda, Antonio J. Rey, Pedro J. Mitchell-Olds, Thomas Amasino, Richard M. TI Natural Variation of Flowering Time and Vernalization Responsiveness in Brachypodium distachyon SO BIOENERGY RESEARCH LA English DT Article DE Biomass; Bioenergy; Brachypodium; Flowering time; Vernalization ID MODEL SYSTEM; GENE FAMILY; ARABIDOPSIS; WHEAT; GRASS; CEREALS; VRN2; TRANSFORMATION; PHOTOPERIOD; TRANSITION AB Dedicated bioenergy crops require certain characteristics to be economically viable and environmentally sustainable. Perennial grasses, which can provide large amounts of biomass over multiple years, are one option being investigated to grow on marginal agricultural land. Recently, a grass species ( Brachypodium distachyon) has been developed as a model to better understand grass physiology and ecology. Here, we report on the flowering time variability of natural Brachypodium accessions in response to temperature and light cues. Changes in both environmental parameters greatly influence when a given accession will flower, and natural Brachypodium accessions broadly group into winter and spring annuals. Similar to what has been discovered in wheat and barley, we find that a portion of the phenotypic variation is associated with changes in expression of orthologs of VRN genes, and thus, VRN genes are a possible target for modifying flowering time in grass family bioenergy crops. C1 [Schwartz, Christopher J.; Doyle, Mark R.; Amasino, Richard M.] Univ Wisconsin Madison, Great Lakes Bioenergy Res Ctr, Dept Biochem, Madison, WI 53706 USA. [Manzaneda, Antonio J.; Mitchell-Olds, Thomas] Duke Univ, Inst Genom Sci & Policy, Dept Biol, Durham, NC 27708 USA. [Rey, Pedro J.] Univ Jaen, Dept Biol Anim Vegetal & Ecol, Jaen 23071, Spain. RP Amasino, RM (reprint author), Univ Wisconsin Madison, Great Lakes Bioenergy Res Ctr, Dept Biochem, Madison, WI 53706 USA. EM amasino@biochem.wisc.edu RI Mitchell-Olds, Thomas/K-8121-2012; Rey, Pedro/I-2165-2015; OI Mitchell-Olds, Thomas/0000-0003-3439-9921; Rey, Pedro/0000-0001-5550-0393; Manzaneda Avila, Antonio Jose/0000-0001-9384-7910 FU US Department of Energy Great Lakes Bioenergy Research Center FX We would like to thank Thomas Ream for critically reading the manuscript and Doobie Schmooney for many helpful insights. This work was funded by the US Department of Energy Great Lakes Bioenergy Research Center (http://www.great lakesbioenergy.org/). NR 35 TC 39 Z9 41 U1 4 U2 25 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 38 EP 46 DI 10.1007/s12155-009-9069-3 PG 9 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400006 ER PT J AU Yilmaz, LS Kontur, WS Sanders, AP Sohmen, U Donohue, TJ Noguera, DR AF Yilmaz, Luftu Safak Kontur, Wayne S. Sanders, Alison P. Sohmen, Ugur Donohue, Timothy J. Noguera, Daniel R. TI Electron Partitioning During Light-and Nutrient-Powered Hydrogen Production by Rhodobacter sphaeroides SO BIOENERGY RESEARCH LA English DT Article DE Biofuel; Hydrogen; Electron balance; PHB mutant; Rhodobacter sphaeroides ID POLY-BETA-HYDROXYBUTYRATE; WASTE-WATER; H-2 ACCUMULATION; METABOLISM; BACTERIA; OU001; PHOTOPRODUCTION; CHROMATOGRAPHY; ECONOMY; GROWTH AB The partitioning of reducing power into different electron-accepting pathways was evaluated during growth and stationary phases of H-2-producing Rhodobacter sphaeroides cultures. For this, an electron balance method was developed using the chemical oxygen demand concept to quantitatively analyze the partitioning of nutrient electrons into H-2, cell biomass, polyhydroxybutyrate (PHB), and soluble microbial products (SMP). Overall, these four electron sinks were accounted for greater than 85% of the electrons provided by the nutrients. Glucose, lactate, succinate, fumarate, and pyruvate were individually provided as the main carbon source, and in all cases, glutamate was provided as a nitrogen source in order to enhance H-2 production. About 25-35% of the electrons ended up in H-2 during growth, while up to 60% of the electrons partitioned into H-2 in some stationary phase cultures. The other two major electron sinks in the growth phase were cell mass and PHB, while in stationary phase, SMP were accounted for > 30% of the substrate electrons utilized. In general, the largest portion of SMP comprised low-molecular weight (<3 kDa) compounds mostly produced during stationary phase, although larger-size molecules were also detected in both phases. Overall, the fractions of electrons that partitioned into H-2 (0.21 to 0.35) and PHB (0.06 to 0.21) were highly correlated with the standard free energy change of the substrate oxidation half-reaction equation, normalized per electron equivalent. In a PHB(-) mutant, electron redistribution increased H-2 production, the extent of which depended on the carbon source provided. C1 [Yilmaz, Luftu Safak; Sanders, Alison P.; Sohmen, Ugur; Noguera, Daniel R.] Univ Wisconsin, Dept Civil & Environm Engn, Madison, WI 53706 USA. [Kontur, Wayne S.; Donohue, Timothy J.] Univ Wisconsin, Dept Bacteriol, Madison, WI 53706 USA. [Yilmaz, Luftu Safak; Kontur, Wayne S.; Donohue, Timothy J.; Noguera, Daniel R.] Univ Wisconsin, Great Lakes Bioenergy Res Ctr, Madison, WI 53706 USA. RP Noguera, DR (reprint author), Univ Wisconsin, Dept Civil & Environm Engn, 3216 Engn Hall,1415 Engn Dr, Madison, WI 53706 USA. EM noguera@engr.wisc.edu OI Sanders, Alison/0000-0001-8252-4016; Donohue, Timothy/0000-0001-8738-2467 FU Office of Science, Department of Energy [DE-FG02-07ER64495, DE-FC02-07ER64494] FX This research was supported by the Office of Science, Department of Energy, under grants DE-FG02-07ER64495 and DE-FC02-07ER64494. We are indebted to Jackie B. Cooper for her help with analytical equipment and to Rodolfo Perez for valuable discussions and technical help. We also thank Yasar Yilmaz for constructing the light box used in this study. NR 43 TC 26 Z9 26 U1 0 U2 13 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 EI 1939-1242 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 55 EP 66 DI 10.1007/s12155-009-9072-8 PG 12 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400008 ER PT J AU Banerjee, G Scott-Craig, JS Walton, JD AF Banerjee, Goutami Scott-Craig, John S. Walton, Jonathan D. TI Improving Enzymes for Biomass Conversion: A Basic Research Perspective SO BIOENERGY RESEARCH LA English DT Article DE Cellulase; Hemicellulase; Xylanase; Ammonia fiber expansion; Corn stover; Bioenergy; Xylosidase; glucosidase; cellobiohydrolase; Endoglucanase; Trichoderma; Aspergillus ID TRICHODERMA-REESEI; ENZYMATIC-HYDROLYSIS; CORN STOVER; CLOSTRIDIUM-THERMOCELLUM; CELLULASE PRODUCTION; CELLULOSIC ETHANOL; WHEAT ARABINOXYLAN; DEGRADING ENZYMES; HYPOCREA-JECORINA; BETA-GLUCOSIDASE AB The cost of enzymes for converting plant biomass materials to fermentable sugars is a major impediment to the development of a practical lignocellulosic ethanol industry. Research on enzyme optimization with the goal of reducing the cost of converting biomass materials such as corn stover into glucose, xylose, and other sugars is being actively pursued in private industry, academia, and government laboratories. Under the auspices of the Department of Energy Great Lakes Bioenergy Research Center, we are taking several approaches to address this problem, including "bioprospecting" for superior key enzymes, protein engineering, and high-level expression in plants. A particular focus is the development of synthetic enzyme mixtures, in order to learn which of the hundreds of known enzymes are important and in what ratios. A core set comprises cellobiohydrolase, endoglucanase, beta-glucosidase, endoxylanase, and beta-glucosidase. Accessory enzymes include esterases, proteases, nonhydrolytic proteins, and glycosyl hydrolases that cleave the less frequent chemical linkages found in plant cell walls. C1 [Banerjee, Goutami; Scott-Craig, John S.; Walton, Jonathan D.] Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. [Banerjee, Goutami; Scott-Craig, John S.; Walton, Jonathan D.] Michigan State Univ, Plant Res Lab, E Lansing, MI 48824 USA. RP Walton, JD (reprint author), Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. EM walton@msu.edu FU US Department of Energy Great Lakes Bioenergy Research Center (DOE Office of Science BER) [DE-FC02-07ER64494] FX We thank Melissa Borrusch and Suzana Car for technical assistance. Research on fungal enzymes in our laboratory was supported for many years by the US Department of Agriculture National Research Initiative Competitive Grants Program (NRICGP) and is currently funded by the US Department of Energy Great Lakes Bioenergy Research Center (DOE Office of Science BER DE-FC02-07ER64494). Our GLBRC-sponsored research is a collaboration with the laboratory of Bruce Dale (MSU Department of Chemical Engineering), to whom we are grateful for sharing reagents and for many fruitful discussions. NR 64 TC 106 Z9 106 U1 9 U2 67 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 82 EP 92 DI 10.1007/s12155-009-9067-5 PG 11 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400010 ER PT J AU Santoro, N Cantu, SL Tornqvist, CE Falbel, TG Bolivar, JL Patterson, SE Pauly, M Walton, JD AF Santoro, Nicholas Cantu, Shane L. Tornqvist, Carl-Erik Falbel, Tanya G. Bolivar, Jenny L. Patterson, Sara E. Pauly, Markus Walton, Jonathan D. TI A High-Throughput Platform for Screening Milligram Quantities of Plant Biomass for Lignocellulose Digestibility SO BIOENERGY RESEARCH LA English DT Article DE Biomass conversion; Biomass pretreatment; Cellulase; Lignocellulose; High-throughput screening; Maize; Arabidopsis ID FILTER-PAPER ASSAY; ENZYMATIC-HYDROLYSIS; CELLULASE ACTIVITY; BIOFUELS; ETHANOL; RESOURCE; SYSTEM; STOVER AB The development of a viable lignocellulosic ethanol industry requires multiple improvements in the process of converting biomass to ethanol. A key step is the improvement of the plants that are to be used as biomass feedstocks. To facilitate the identification and evaluation of feedstock plants, it would be useful to have a method to screen large numbers of individual plants for enhanced digestibility in response to combinations of specific pretreatments and enzymes. This paper describes a high-throughput digestibility platform (HTDP) for screening collections of germplasm for improved digestibility, which was developed under the auspices of the Department of Energy-Great Lakes Bioenergy Research Center (DOEGLBRC).A key component of this platform is a custom-designed workstation that can grind and dispense 1-5 mg quantities of more than 250 different plant tissue samples in 16 h. The other steps in the processing ( pretreatment, enzyme digestion, and sugar analysis) have also been largely automated and require 36 h. The process is adaptable to diverse acidic and basic, low-temperature pretreatments. Total throughput of the HTDP is 972 independent biomass samples per week. Validation of the platform was performed on brown midrib mutants of maize, which are known to have enhanced digestibility. Additional validation was performed by screening approximately 1,200 Arabidopsis mutant lines with T-DNA insertions in genes known or suspected to be involved in cell wall biosynthesis. Several lines showed highly significant (p< 0.01) increases in glucose and xylose release (20-40% above the mean). The platform should be useful for screening populations of plants to identify superior germplasm for lignocellulosic ethanol applications and also for screening populations of mutant model plants to identify specific genes affecting digestibility. C1 [Santoro, Nicholas; Cantu, Shane L.; Pauly, Markus; Walton, Jonathan D.] Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, E Lansing, MI 48824 USA. [Tornqvist, Carl-Erik; Falbel, Tanya G.; Bolivar, Jenny L.; Patterson, Sara E.] Univ Wisconsin, Dept Energy, Great Lakes Bioenergy Res Ctr, Dept Hort, Madison, WI 53706 USA. [Pauly, Markus; Walton, Jonathan D.] Michigan State Univ, Dept Energy, Plant Res Lab, E Lansing, MI 48824 USA. RP Santoro, N (reprint author), Michigan State Univ, Dept Energy, Great Lakes Bioenergy Res Ctr, 162 Food & Safety Toxicol Bldg, E Lansing, MI 48824 USA. EM santoro@msu.edu; walton@msu.edu RI Pauly, Markus/B-5895-2008 OI Pauly, Markus/0000-0002-3116-2198 FU DOE Great Lakes Bioenergy Research Center (DOE Office of Science BER) [DE-FC02-07ER64494]; U.S. National Science Foundation [DBI 0217552] FX This work was funded by the DOE Great Lakes Bioenergy Research Center (DOE Office of Science BER DE-FC02-07ER64494). We are grateful to Julie Chen of Horiba Instruments, Inc. (17671 Armstrong Avenue, Irvine, California) for the particle size measurements. We thank Cliff Foster (GLBRC, MSU) for total sugar analyses. The original genotyping of the Arabidopsis plants with wall-associated mutations was funded by the U.S. National Science Foundation (Grant #DBI 0217552). NR 28 TC 38 Z9 40 U1 0 U2 19 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1939-1234 J9 BIOENERG RES JI BioEnergy Res. PD MAR PY 2010 VL 3 IS 1 SI SI BP 93 EP 102 DI 10.1007/s12155-009-9074-6 PG 10 WC Energy & Fuels; Environmental Sciences SC Energy & Fuels; Environmental Sciences & Ecology GA 607XU UT WOS:000278541400011 ER EF