FN Thomson Reuters Web of Science™ VR 1.0 PT J AU RUSNAK, J SARTIN, JS PACE, E ONEILL, J HAAG, SD ROBERTS, J MALONE, JL AF RUSNAK, J SARTIN, JS PACE, E ONEILL, J HAAG, SD ROBERTS, J MALONE, JL TI DRUG SUSCEPTIBILITY OF MYCOBACTERIUM-TUBERCULOSIS ISOLATES FROM A COHORT OF HAITIAN MIGRANTS EVALUATED IN 1994 SO CLINICAL INFECTIOUS DISEASES LA English DT Letter C1 NATL NAVAL MED CTR, DIV INFECT DIS, BETHESDA, MD 20889 USA. USAF, WILFORD HALL HOSP, DIV INFECT DIS, LACKLAND AFB, TX USA. USAF, TAC AIR TRANSPORTABLE HOSP 6, GUANTANAMO BAY, CUBA. NR 2 TC 1 Z9 1 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD OCT PY 1995 VL 21 IS 4 BP 1066 EP 1066 PG 1 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RZ139 UT WOS:A1995RZ13900068 PM 8645824 ER PT J AU HANCOCK, TE THURMAN, RA HUBBARD, DC AF HANCOCK, TE THURMAN, RA HUBBARD, DC TI AN EXPANDED CONTROL MODEL FOR THE USE OF INSTRUCTIONAL FEEDBACK SO CONTEMPORARY EDUCATIONAL PSYCHOLOGY LA English DT Article ID RESPONSE CONFIDENCE; BEHAVIOR AB The strengths of the now classic Kulhavy/Stock model of instructional feedback are summarized and various researchers' suggestions for improvement are incorporated into an expanded model. Data from two computer drill experiments demonstrate that the use of feedback varies systematically between subjects: the highest achieving subjects use feedback as the Kulhavy/Stock model predicts, the intermediate achievers use of feedback is less predictable, and the lowest achievers use feedback in a nearly random manner. These response patterns can be addressed in a feedback processing model which adds higher level goals related to certitude and correct responding. The expanded model has the following characteristics: feedback processing is not automatic, but varies in mindfulness; learner's individual goals are incorporated; analysis and modeling are conducted on a subject by subject basis; and instructional feedback is understood more in terms of each learner's control systems and less in terms of a stimulus-response orientation. (C) 1995 Academic Press, Inc. C1 GRAND CANYON UNIV,PHOENIX,AZ 85017. USAF,ARMSTRONG LABS,BROOKS AFB,TX. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 35 TC 6 Z9 6 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0361-476X J9 CONTEMP EDUC PSYCHOL JI Contemp. Educ. Psychol. PD OCT PY 1995 VL 20 IS 4 BP 410 EP 425 DI 10.1006/ceps.1995.1028 PG 16 WC Psychology, Educational SC Psychology GA TB650 UT WOS:A1995TB65000004 ER PT J AU SCANLON, LG KRAWIEC, W YEATES, AT DUDIS, DS AF SCANLON, LG KRAWIEC, W YEATES, AT DUDIS, DS TI AB-INITIO MOLECULAR-ORBITAL CALCULATIONS ON CYCLIC ETHERS - CORRELATION WITH INTERFACIAL STABILITY AND CYCLING LIFE OF NONAQUEOUS ELECTROLYTES SO ELECTROCHIMICA ACTA LA English DT Article; Proceedings Paper CT 5th International Symposium on Polymer Electrolytes (ISPE4) CY JUN 21-25, 1994 CL NEWPORT, RI SP Ciba Geigy Japan Ltd, Cyprus Foote Mineral Co, Dai Ichi Kogyo Seiyaku Co Ltd, Duracell Int Inc, Ever Ready Battery Co Inc, USN, Off Naval Res, Yuasa Corp DE AB INITIO; UNSATURATED ETHERS; ELECTRON AFFINITY; FURAN; LITHIUM HEXAFLUOROARSENATE ID LITHIUM AB Ab initio calculations have been performed on the unsaturated cyclic ethers 2,3-dihydrofuran, furan, 2,3-dihydropyran, 2-methylfuran and 2,5-dimethylfuran and their corresponding anion-radicals. As additives (0.5 vol.%) to non-aqueous electrolytes, these ethers have been observed to increase the cycle life of rechargeable lithium cells. As the degree of unsaturation of the cyclic ether increases, the cycle life increases. With 2-methylfuran, the increase in cycle life can be as much as an order of magnitude relative to no additive. Geometry optimizations were done using the unrestricted Hartree-Fock method with the 6-31G(d) basis set. Single point energy calculations were performed using the unrestricted second order Moller-Plesset method with the 6-31 + G(d,p) basis set. Electron affinity and bond length calculations suggest that the increase in cycle life does not depend on the relative stability of anion-radicals at the lithium electrode/electrolyte interface. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP SCANLON, LG (reprint author), USAF,WRIGHT LAB,BATTERY ELECTROCHEM SECT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 4 Z9 4 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0013-4686 J9 ELECTROCHIM ACTA JI Electrochim. Acta PD OCT PY 1995 VL 40 IS 13-14 BP 2431 EP 2435 DI 10.1016/0013-4686(95)00209-W PG 5 WC Electrochemistry SC Electrochemistry GA RU089 UT WOS:A1995RU08900072 ER PT J AU ILLIONS, EH SCOTT, RT CAREY, KD NAVOT, D AF ILLIONS, EH SCOTT, RT CAREY, KD NAVOT, D TI EVALUATION OF THE IMPACT OF CONCURRENT GONADOTROPIN-RELEASING-HORMONE (GNRH) ANTAGONIST ADMINISTRATION ON GNRH AGONIST-INDUCED GONADOTROPE DESENSITIZATION SO FERTILITY AND STERILITY LA English DT Article DE GONADORELIN; GNRH ANALOGS; GONADOTROPINS; GONADOTROPES; BABOONS; PRIMATES ID FOLLICLE-STIMULATING-HORMONE; OVARIAN SUPPRESSION; LUTEINIZING-HORMONE; PROLONGED DURATION; SECRETION; PITUITARY; MONKEYS; INHIBITION AB Objective: To evaluate the impact of chronic GnRH antagonist therapy on the extent of GnRH agonist-induced gonadotrope desensitization. Design: Prospective and controlled. Setting: Primate Research Center. Participants: Six reproductive age cycling female baboons (Papio cyanocephalus anubis). Interventions: The animals were divided into two groups. Group A received a total of 19 pulses of 0.83 mu g/kg leuprolide acetate (LA) on a 12-hour dosing schedule. Group B received Nal-Lys (3 mg/kg then 1 mg/kg every other day) for 1 week and then added an identical 19 pulses of LA while continuing Nal-Lys therapy. Main Outcome Measures: Characterization of the gonadotropin response was done by collecting serum samples at -15, 0, 15, 30, 60, 90, 120, 240, and 480 minutes relative to the injection of the LA. Results: After equivalent baseline responses, the baboons pretreated with Nal-Lys had an increased LH and FSH response to the administration of the LA. After a total of 19 pulses of the LA, the Nal-Lys-treated animals had an increased FSH response in comparison to the untreated controls. This indicates that the extent of gonadotrope desensitization was reduced in the presence of the GnRH antagonist. Conclusions: The presence of GnRH antagonist reduces the extent of gonadotrope desensitization in response to the administration of repetitive pulses of GnRH agonist. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,SAN ANTONIO,TX 78236. SW FDN BIOMED RES,DIV PHYSIOL & MED,SAN ANTONIO,TX 78284. NEW YORK MED COLL,DEPT OBSTET & GYNECOL,DIV REPROD ENDOCRINOL,VALHALLA,NY 10595. NR 19 TC 3 Z9 3 U1 0 U2 0 PU AMER SOC REPRODUCTIVE MEDICINE PI BIRMINGHAM PA 1209 MONTGOMERY HIGHWAY, BIRMINGHAM, AL 35216-2809 SN 0015-0282 J9 FERTIL STERIL JI Fertil. Steril. PD OCT PY 1995 VL 64 IS 4 BP 848 EP 854 PG 7 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA RW249 UT WOS:A1995RW24900028 PM 7672160 ER PT J AU BRIER, KL AF BRIER, KL TI PHARMACEUTICAL MANAGEMENT STRATEGIES OF INDUSTRIALIZED COUNTRIES SO FORMULARY LA English DT Review AB Health care costs as a percentage of the gross national product have been increasing in most industrialized countries. As part of the trend, pharmaceutical expenditures also have been rising. In many countries, pharmaceutical costs are the largest single health care expenditure. In an effort to contain rising costs, governments are exploring a variety of pharmaceutical management strategies. These include price controls, restrictive formularies, budget caps, profit controls and practitioner education. RP BRIER, KL (reprint author), USAF,CTR PHARMACOECON,2107 17TH ST,FT SAM HOUSTON,TX 78234, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ADVANSTAR COMMUNICATIONS PI DULUTH PA 131 W FIRST ST, DULUTH, MN 55802 SN 0098-6909 J9 FORMULARY JI Formulary PD OCT PY 1995 VL 30 IS 10 BP 606 EP & PG 0 GA TA488 UT WOS:A1995TA48800004 PM 10151724 ER PT J AU BLOSS, JD LUCCI, JA DISAIA, PJ MANETTA, A SCHIANO, MA RAMSINGHANI, N BERMAN, ML AF BLOSS, JD LUCCI, JA DISAIA, PJ MANETTA, A SCHIANO, MA RAMSINGHANI, N BERMAN, ML TI A PHASE-II TRIAL OF NEOADJUVANT CHEMOTHERAPY PRIOR TO RADICAL HYSTERECTOMY AND/OR RADIATION-THERAPY IN THE MANAGEMENT OF ADVANCED-CARCINOMA OF THE UTERINE CERVIX SO GYNECOLOGIC ONCOLOGY LA English DT Article; Proceedings Paper CT 26th Annual Meeting of the Society-of-Gynecologic-Oncologists CY FEB 19-22, 1995 CL SAN FRANCISCO, CA SP Soc Gynecol Oncologists ID GYNECOLOGIC ONCOLOGY GROUP; STAGE-IB; CANCER; RADIOTHERAPY; BULKY; CISPLATIN AB Objective: This prospective trial was designed to access the efficacy and safety of neoadjuvant chemotherapy followed by radical hysterectomy and/or radiation therapy in women with advanced carcinoma of the uterine cenix. Methods: Thirty women, clinical stages IIb-IVa, were enrolled in this clinical trial. Initial treatment consisted of three cycles of bleomycin, cisplatin, and vincristine administered every 10 days. Depending on the extent of disease after chemotherapy, patients then either underwent radical hysterectomy with bilateral pelvic and periaortic lymphadenectomy or surgical staging. Following review of the surgical findings, tailored radiotherapy was administered, Results: Only 10 women (34%) had tumor regression from neoadjuvant chemotherapy sufficient to allow radical hysterectomy prior to tailored adjuvant radiotherapy; the remainder received primary radiotherapy after surgical staging, Two-year disease-free survival was 68, 43, and 0% for women with clinical stages II, III, and IV, respectively. Four women experienced acute toxicity from chemotherapy requiring medical intervention and eight women suffered chronic toxicities requiring hospitalization and/or surgery. Conclusion: The neoadjuvant chemotherapy utilized in this trial was generally ineffective in converting patients from inoperable to operable, had no apparent effect on survival, and was associated with significant toxicity. (C) 1995 Academic Press, Inc. C1 UNIV CALIF IRVINE, DIV GYNECOL ONCOL, ORANGE, CA 92668 USA. UNIV CALIF IRVINE, DIV RADIAT ONCOL, ORANGE, CA 92668 USA. UNIV TEXAS, DIV GYNECOL ONCOL, DALLAS, TX 75235 USA. RP BLOSS, JD (reprint author), USAF, WILFORD HALL MED CTR, DIV GYNECOL ONCOL, LACKLAND AFB, TX 78236 USA. NR 20 TC 28 Z9 28 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0090-8258 J9 GYNECOL ONCOL JI Gynecol. Oncol. PD OCT PY 1995 VL 59 IS 1 BP 105 EP 110 DI 10.1006/gyno.1995.1275 PG 6 WC Oncology; Obstetrics & Gynecology SC Oncology; Obstetrics & Gynecology GA RX624 UT WOS:A1995RX62400018 PM 7557594 ER PT J AU SCHROEDER, JE HUDGINS, CE GOLDMAN, PC AF SCHROEDER, JE HUDGINS, CE GOLDMAN, PC TI A MODULAR APPROACH TO DIGITAL NETWORKS FOR 4TH-GENERATION AVIONICS SO IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE LA English DT Article AB To support the Joint Advanced Strike Technology (JAST) baseline architecture, advanced avionic systems will need to be modular in nature and support open commercial standards. System issues affecting these modules are discussed and the performance of existing and planned demonstration hardware is described. C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP SCHROEDER, JE (reprint author), HARRIS CORP,DIV AEROSP SYST,POB 94000,MELBOURNE,FL, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8985 J9 IEEE AERO EL SYS MAG JI IEEE Aerosp. Electron. Syst. Mag. PD OCT PY 1995 VL 10 IS 10 BP 39 EP 42 DI 10.1109/62.469798 PG 4 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA TB405 UT WOS:A1995TB40500011 ER PT J AU MENKE, TE MAYBECK, PS AF MENKE, TE MAYBECK, PS TI SENSOR/ACTUATOR FAILURE-DETECTION IN THE VISTA F-16 BY MULTIPLE MODEL ADAPTIVE ESTIMATION SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID FLIGHT AB Multiple model adaptive estimation (MMAE) is applied to the Variable In-flight Stability Test Aircraft (VISTA) F-16 flight control system at a low dynamic pressure flight condition (0.4 M at 20000 ft). Single actuator and sensor failures are addressed first, followed by dual actuator and sensor failures. The system is evaluated for complete or ''hard'' failures, partial or ''soft'' failures, and combinations of hard and soft actuator and sensor failures. Residual monitoring is discussed for single and dual failure scenarios. performance is enhanced by the application of a modified Bayesian form of MMAE, scalar residual monitoring to reduce ambiguities, automatic dithering where advantageous, and purposeful commands. RP MENKE, TE (reprint author), USAF,INST TECHNOL ENG,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 82 Z9 86 U1 1 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD OCT PY 1995 VL 31 IS 4 BP 1218 EP 1229 DI 10.1109/7.464346 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RX711 UT WOS:A1995RX71100001 ER PT J AU MAYBECK, PS HANLON, PD AF MAYBECK, PS HANLON, PD TI PERFORMANCE ENHANCEMENT OF A MULTIPLE MODEL ADAPTIVE ESTIMATOR SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article AB We describe performance improvement techniques for a multiple model adaptive estimator (MMAE) used to detect and identify control surface and sensor failures on on unmanned flight vehicle. Initially, failure identification was accomplished within I s of onset, but by removing the ''beta dominance'' effects, bounding the hypothesis conditional probabilities, retuning the Kalman filters, increasing the penalty for measurement residuals, decreasing the probability smoothing, and increasing residual propagation the identification time was reduced to 2 s. RP MAYBECK, PS (reprint author), USAF,INST TECHNOL ENG,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 46 Z9 46 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD OCT PY 1995 VL 31 IS 4 BP 1240 EP 1254 DI 10.1109/7.464348 PG 15 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RX711 UT WOS:A1995RX71100003 ER PT J AU FIELDING, KH RUCK, DW AF FIELDING, KH RUCK, DW TI SPATIOTEMPORAL PATTERN-RECOGNITION USING HIDDEN MARKOV-MODELS SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID REPRESENTATION; OBJECTS; VIEWS AB A spatio-temporal method for identifying objects contained in an image sequence is presented The Hidden Markov Model (HMM) technique is used as the classification algorithm, making classification decisions based on a spatio-temporal sequence of observed object features. A five class problem is considered Classification accuracies of 100% and 99.7% are obtained for sequences of images generated over two separate regions of viewing positions. HMMs trained on image sequences of the objects moving in opposite directions showed a 98.1% successful classification rate by class and direction of movement. The HMM technique proved robust to image corruption with additive correlated noise and had a higher accuracy than a single-look nearest neighbor method. A real image sequence of one of the objects used was successfully recognized with the HMMs trained on synthetic data. This study shows the temporal changes that observed feature vectors undergo due to object motion hold information that can yield superior classification accuracy when compared with single-frame techniques. RP FIELDING, KH (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 25 TC 11 Z9 13 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD OCT PY 1995 VL 31 IS 4 BP 1292 EP 1300 DI 10.1109/7.464351 PG 9 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RX711 UT WOS:A1995RX71100006 ER PT J AU HAUPT, RL AF HAUPT, RL TI UNIT-CIRCLE REPRESENTATION OF APERIODIC ARRAYS SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Note AB Traditionally, unit circle analysis/synthesis techniques were only applied to amplitude tappred arrays. This paper extends the method to uniformly weighted thinned and aperiodic arrays. RP HAUPT, RL (reprint author), USAF ACAD,DEPT AF,COLORADO SPRINGS,CO 80840, USA. NR 6 TC 13 Z9 17 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD OCT PY 1995 VL 43 IS 10 BP 1152 EP 1155 DI 10.1109/8.467654 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RZ863 UT WOS:A1995RZ86300019 ER PT J AU LACLAIR, T FRANKEL, JI AF LACLAIR, T FRANKEL, JI TI CHEBYSHEV SERIES SOLUTION FOR RADIATIVE TRANSPORT IN A MEDIUM WITH A LINEARLY ANISOTROPIC SCATTERING PHASE FUNCTION SO INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW LA English DT Article DE HEAT TRANSFER; SCATTERING MEDIUM; COLLOCATION METHOD; CHEBYSHEV SERIES SOLUTION ID PLANAR MEDIUM AB One-dimensional radiative heat transfer is considered in a plane-parallel geometry for an absorbing, emitting, and linearly anisotropic scattering medium subjected to azimuthally symmetric incident radiation at the boundaries. The integral form of the transport equation is used throughout the analysis. This formulation leads to a system of weakly-singular Fredholm integral equations of the second kind. The resulting unknown functions are then formally expanded in Chebyshev series. These series representations are truncated at a specified number of terms, leaving residual functions as a result of the approximation. The collocation and the Ritz-Galerkin methods are formulated, and are expressed in terms of general orthogonality conditions applied to the residual functions. The major contribution of the present work lies in developing quantitative error estimates, Error bounds are obtained for the approximating functions by developing equations relating the residuals to the errors and applying functional norms to the resulting set of equations. The collocation and Ritz-Galerkin methods are each applied in turn to determine the expansion coefficients of the approximating functions. The effectiveness of each method is interpreted by analyzing the errors which result from the approximations. C1 UNIV TENNESSEE,DEPT MECH & AEROSP ENGN,KNOXVILLE,TN 37996. RP LACLAIR, T (reprint author), USAF,PHILLIPS LAB,3550 ABERDEEN AVE SE,BLDG 30117,KIRTLAND AFB,NM 87117, USA. NR 27 TC 1 Z9 1 U1 0 U2 0 PU PINERIDGE PRESS LTD PI SWANSEA PA 54 NEWTON RD MUMBLES, SWANSEA SA3 4BQ, WALES SN 0961-5539 J9 INT J NUMER METHOD H JI Int. J. Numer. Methods Heat Fluid Flow PD OCT PY 1995 VL 5 IS 8 BP 685 EP 704 DI 10.1108/EUM0000000004084 PG 20 WC Thermodynamics; Mathematics, Interdisciplinary Applications; Mechanics SC Thermodynamics; Mathematics; Mechanics GA TA843 UT WOS:A1995TA84300002 ER PT J AU PAI, PF PALAZOTTO, AN AF PAI, PF PALAZOTTO, AN TI NONLINEAR DISPLACEMENT-BASED FINITE-ELEMENT ANALYSES OF COMPOSITE SHELLS - A NEW TOTAL LAGRANGIAN FORMULATION SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article ID SHEAR-DEFORMATION-THEORY; CYLINDRICAL-SHELLS; PLATES; STRESS AB Presented here is a new total Lagrangian finite-element formulation for general laminated composite shells undergoing large-displacement, large-rotation, and large-strain motion. The theory fully accounts for geometric nonlinearities (large relations), large in-plane strains, general initial curvatures, transverse shear deformations, and interlaminar normal stresses by using Jaumann stress and strain measures, an exact coordinate transformation, and a new concept of orthogonal virtual rotations. In addition, with the inclusion of transverse normal and shear stresses, the theory accounts for three-dimensional stress effects and gives accurate effective structural stiffnesses. Because of the inclusion of all possible initial curvatures, the developed strain-displacement expressions can be used for any surface structures and are fully nonlinear, which contain von Karman strains as a special case. Moreover, the theory accounts for the continuity of interlaminar shear and peeling stresses and the normal and shear stress conditions on the bonding surfaces by using a new layer-wise local displacement field, which results in a higher-order shear theory that contains most shear deformation theories as special cases. In this paper, we develop a fully nonlinear displacement-based finite-element formulation based on the derived shell theory. The verification and accuracy of the theory will be presented in a subsequent paper by comparing obtained numerical results with some exact solutions. RP PAI, PF (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,DAYTON,OH 45433, USA. NR 33 TC 24 Z9 24 U1 0 U2 7 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PD OCT PY 1995 VL 32 IS 20 BP 3047 EP 3073 DI 10.1016/0020-7683(94)00273-Y PG 27 WC Mechanics SC Mechanics GA RP588 UT WOS:A1995RP58800008 ER PT J AU THEE, PL YEO, YK HENGEHOLD, RL POMRENKE, GS AF THEE, PL YEO, YK HENGEHOLD, RL POMRENKE, GS TI PR3+ LUMINESCENCE IN GAAS AND ALXGA1-XAS IMPLANTED WITH PR SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID III-V-SEMICONDUCTORS; ERBIUM-DOPED GAAS; PRASEODYMIUM; YTTERBIUM; ALGAAS; INP AB Praseodymium (Pr) emissions were investigated for Pr-implanted GaAs and AlxGa1-xAs as a function of Al mole fraction, sample temperature, and anneal temperature using photoluminescence (PL) spectroscopy. Two groups of major PL peaks have been observed near 1.6 and 1.3 mu m, which can be attributed to the crystal-field-split spin-orbit level transitions of F-3(3) --> H-3(4) and (1)G(4) --> H-3(5) of pr(3+) (4f(2)), respectively. The PL intensity of Pr3+ varies dramatically with the Al mole fraction in Pr-implanted AlxGa1-xAs. For GaAs, the PL peak intensity near 1.3 mu m is strong and the peak intensity near 1.6 mu m is weak, whereas the PL peak intensity near 1.6 mu m is much stronger than that of 1.3 mu m for AlxGa1-xAs. Furthermore, Al0.15Ga0.85As shows particularly strong luminescence peaks near 1.6 mu m. PL emissions of Pr were detected for sample temperatures as high as 100 K, and several hot lines were identified. The optimal anneal temperatures for the Pr-implanted GaAs and AlxGa1-xAs are between 725 and 775 degrees C. Dual implantations of Pr and Er into Al0.15Ga0.85As have also been made, but the PL results showed that the emission intensities of both ions did not increase compared to those of identically prepared singly implanted samples. Possible excitation processes are explored in light of these results. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. ADV RES PROJECTS AGCY,ARLINGTON,VA 22203. NR 24 TC 3 Z9 3 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 1995 VL 78 IS 7 BP 4651 EP 4658 DI 10.1063/1.359812 PG 8 WC Physics, Applied SC Physics GA RW892 UT WOS:A1995RW89200052 ER PT J AU CAPANO, MA AF CAPANO, MA TI TIME-OF-FLIGHT ANALYSIS OF THE PLUME DYNAMICS OF LASER-ABLATED 6H-SILICON CARBIDE SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID THIN-FILMS; SIC FILMS; DEPOSITION; EVAPORATION AB The mass and velocity distributions of neutral species, ejected from a laser-ablated 6H-SiC target, are measured by time-of-flight mass spectroscopy. The laser-generated Flume is shown to consist of atomic silicon and carbon and small neutral clusters. Measured values of the mean kinetic energies of neutral Si and SiC2 species are 1.1 and 1.5 eV, respectively, when a 6H-SiC target is irradiated with 248 nm radiation at a power density of 1x10(8) W/cm(2). The kinetic energy distribution of Si+ ions is also measured for comparison with the neutral species, and shows a peak in the distribution at 38 eV. These data illustrate that an electronic, and not a thermal, mechanism for particle emission is active during the ablation of a 6H-SiC target. The relationship between the dynamics of the photoablation process and the properties of pulsed-laser-deposited films is also briefly discussed. (C) 1995 American Institute of Physics. RP CAPANO, MA (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 14 Z9 14 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD OCT 1 PY 1995 VL 78 IS 7 BP 4790 EP 4792 DI 10.1063/1.359760 PG 3 WC Physics, Applied SC Physics GA RW892 UT WOS:A1995RW89200069 ER PT J AU LOOK, DC FANG, ZQ SIZELOVE, JR AF LOOK, DC FANG, ZQ SIZELOVE, JR TI ACCURATE MEASUREMENT OF CAPTURE CROSS-SECTIONS IN DEEP-LEVEL TRANSIENT SPECTROSCOPY - APPLICATION TO EL2 IN GAAS SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE CAPTURE CROSS SECTION; DEEP LEVEL TRANSIENT SPECTROSCOPY (DLTS); EL2; GAAS AB A rigorous formulation of capacitance changes during trap filling processes is presented and used to accurately determine the electron capture cross section of EL2 in GaAs at a particular temperature, 377K, in this case. The value, sigma(n) (377K) = 2.7 x 10(-16) cm(2), is compared with that predicted from the emission dependence. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WL ELRA,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 5 TC 5 Z9 6 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD OCT PY 1995 VL 24 IS 10 BP 1461 EP 1464 DI 10.1007/BF02655464 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA RZ081 UT WOS:A1995RZ08100020 ER PT J AU Nicholas, T AF Nicholas, T TI Fatigue life prediction in titanium matrix composites SO JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME LA English DT Article ID DAMAGE MECHANISMS; ELEVATED-TEMPERATURE; BEHAVIOR AB Methods used for life prediction of titanium matrix composites under isothermal and thermomechanical (TMF) fatigue are reviewed. Models containing a single parameter are shown to have applicability only under limited conditions. Two models, a dominant damage and a life fraction model, demonstrate predictive capabilities over a broad range of loads, frequencies, temperatures, and TMF parameters. Relationships between the underlying fatigue mechanisms and the individual terms in the models are illustrated. RP Nicholas, T (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 38 TC 6 Z9 6 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0094-4289 J9 J ENG MATER-T ASME JI J. Eng. Mater. Technol.-Trans. ASME PD OCT PY 1995 VL 117 IS 4 BP 440 EP 447 DI 10.1115/1.2804737 PG 8 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA TT876 UT WOS:A1995TT87600015 ER PT J AU MCHARG, MG OLSON, JV NEWELL, PT AF MCHARG, MG OLSON, JV NEWELL, PT TI ULF CUSP PULSATIONS - DIURNAL-VARIATIONS AND INTERPLANETARY MAGNETIC-FIELD CORRELATIONS WITH GROUND-BASED OBSERVATIONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID BOUNDARY-LAYER; LOW-ALTITUDE; POLAR CUSP; DAYSIDE; LINE; MAGNETOSPHERE; EXCITATION; DYNAMICS; REGION AB In this paper we establish the Pc 5 magnetic pulsation signatures of the cusp and boundary regions for the high-latitude dayside cusp region. These signatures were determined by comparing spectrograms of the magnetic pulsations with optical observations of particle precipitation regions observed at the cusp. The ULF pulsations have a diurnal variation, and a cusp discriminant is proposed using a particular narrow-band feature in the pulsation spectrograms. The statistical distribution of this pattern over a 253-day period resembles the statistical cusp description using particle precipitation data from the Defense Meteorological Satellite Program (DMSP). The distribution of the ground-based cusp discriminant is found to peak 1 hour earlier than the DMSP cusp distribution. This offset is due to the interplanetary magnetic field (IMF) being predominantly negative By for the period when the data were collected. We find the diurnal variations so repeatable that only three main categories of pulsation spectra explain 86 percent of all data observed. We find that these categories have statistically different IMF distributions. The identification of the signatures in the magnetic spectrograms of the boundary regions and central cusp allows the spectrogram to be used as a ''time line'' that shows when the station passed under different regions of the dayside oval. C1 JOHNS HOPKINS UNIV, APPL PHYS LAB, LAUREL, MD 20723 USA. UNIV ALASKA, INST GEOPHYS, FAIRBANKS, AK 99775 USA. RP USAF ACAD, DEPT PHYS, DEPT AF, 2354 FAIRCHILD DR, SUITE 2A6, COLORADO SPRINGS, CO 80840 USA. NR 36 TC 25 Z9 25 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9380 EI 2169-9402 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD OCT 1 PY 1995 VL 100 IS A10 BP 19729 EP 19742 DI 10.1029/94JA03054 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RY274 UT WOS:A1995RY27400058 ER PT J AU LOUBE, DI STROLLO, PJ EPSTEIN, LJ DAVENPORT, WL AF LOUBE, DI STROLLO, PJ EPSTEIN, LJ DAVENPORT, WL TI THE EFFECT OF QUIET TIDAL BREATHING ON LATERAL CEPHALOMETRIC MEASUREMENTS SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Article ID OBSTRUCTIVE SLEEP-APNEA; UPPER AIRWAY; UVULOPALATOPHARYNGOPLASTY AB Purpose: In the evaluation of the upper airway in patients with sleep apnea it has been suggested that cephalometric radiographs be performed at either end-inspiration or end-expiration during quiet tidal breathing, This study sought to determine if standard soft tissue cephalometric measurements vary significantly with tidal breathing, Patients and Methods: In this prospective, controlled study 22 adult male patients with the sleep apnea/hypopnea syndrome and 27 nonapneic, nonsnoring male controls had cephalometric radiographs performed at end-tidal inspiration and end-tidal expiration. The measurements obtained from each radiograph included the posterior airway space distance, the mandibular plane to hyoid distance, and the posterior nasal spine to tip of palate (PNS-P) distance, Results: There were no statistically significant differences between the inspiratory and expiratory measurements in either group, Only the PNS-P distance differed significantly between the two groups, Changes in cephalometric measurements did not occur uniformly in any one direction with tidal breathing, Conclusion: The data indicate that coordinating radiographic exposure to respiratory cycle phase is not necessary for soft-tissue measurements commonly used to assess upper airway patency in patients with the sleep apnea/hypopnea syndrome. C1 BROOKE ARMY MED CTR,DEPT MED,FT SAM HOUSTON,TX 78234. UNIV PITTSBURGH,DEPT PULM ALLERGY & CRIT CARE MED,PITTSBURGH,PA. WILFORD HALL USAF MED CTR,DEPT MED,CTR SLEEP DISORDERS,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,LACKLAND AFB,TX 78236. NR 20 TC 3 Z9 4 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD OCT PY 1995 VL 53 IS 10 BP 1155 EP 1159 DI 10.1016/0278-2391(95)90623-1 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RX416 UT WOS:A1995RX41600007 PM 7562168 ER PT J AU PERETSMAN, SJ MALDAZYS, JD AF PERETSMAN, SJ MALDAZYS, JD TI INFANTILE TESTICULAR CYST - DIAGNOSIS AND CONSERVATIVE SURGICAL-MANAGEMENT SO JOURNAL OF PEDIATRIC SURGERY LA English DT Note DE CYST; TESTIS; INFANT ID TESTIS AB The authors report on a 5-month-old boy who had a simple cyst of the testis and was treated by testis-sparing cyst excision. Preoperative ultrasonography was diagnostic of a simple cyst, The patient has been without recurrence for over 2 years, and examinations have shown a normal-size testis. A literature review showed only four cases of infantile simple cysts of the testis, only one of which was diagnosed preoperatively and treated by cyst excision. Four of the 5 reported cases (including ours) were diagnosed at 5 months of age, We recommend organ-preserving cyst excision in males under 1 year of age who are found to have an intratesticular lesion that is a simple cyst by ultrasound criteria. RP PERETSMAN, SJ (reprint author), WILFORD HALL USAF MED CTR,PSSU,DEPT UROL,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 7 TC 9 Z9 9 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0022-3468 J9 J PEDIATR SURG JI J. Pediatr. Surg. PD OCT PY 1995 VL 30 IS 10 BP 1488 EP 1489 DI 10.1016/0022-3468(95)90415-8 PG 2 WC Pediatrics; Surgery SC Pediatrics; Surgery GA RZ094 UT WOS:A1995RZ09400025 PM 8786497 ER PT J AU SHAN, XW DOOLEN, G AF SHAN, XW DOOLEN, G TI MULTICOMPONENT LATTICE-BOLTZMANN MODEL WITH INTERPARTICLE INTERACTION SO JOURNAL OF STATISTICAL PHYSICS LA English DT Article; Proceedings Paper CT Lattice Gas 94 Meeting/5th International Conference on Discrete Models for Fluid Mechanics CY JUN 27-29, 1994 CL PRINCETON UNIV, PRINCETON, NJ HO PRINCETON UNIV DE LATTICE-BOLTZMANN; MULTIPHASE FLOW; DIFFUSION ID NAVIER-STOKES EQUATION; MISCIBLE FLUIDS; GAS AUTOMATA AB A lattice Boltzmann model for simulating fluids with multiple components and interparticle forces proposed by Shan and Chen is described in detail. Macroscopic equations governing the motion of each component are derived by using the Chapman-Enskog method. The mutual diffusivity in a binary mixture is calculated analytically and confirmed by numerical simulation. The diffusivity is generally a function of the concentrations of the two components but independent of the fluid velocity, so that the diffusion is Galilean invariant. The analytically calculated shear kinematic viscosity of this model is also confirmed numerically. C1 LOS ALAMOS NATL LAB,CTR NONLINEAR STUDIES,LOS ALAMOS,NM 87545. RP SHAN, XW (reprint author), USAF,PHILLIPS LAB,BEDFORD,MA 01731, USA. RI Shan, Xiaowen/H-2836-2013 OI Shan, Xiaowen/0000-0002-6350-9248 NR 20 TC 280 Z9 303 U1 7 U2 49 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0022-4715 J9 J STAT PHYS JI J. Stat. Phys. PD OCT PY 1995 VL 81 IS 1-2 BP 379 EP 393 DI 10.1007/BF02179985 PG 15 WC Physics, Mathematical SC Physics GA TD432 UT WOS:A1995TD43200023 ER PT J AU XU, Y ZANGVIL, A AF XU, Y ZANGVIL, A TI FORMATION OF BETA-SIALON AS AN INTERMEDIATE OXIDATION-PRODUCT OF SIC-ALN CERAMICS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID PRESSED SILICON-CARBIDE; ALUMINUM NITRIDE; MECHANICAL-PROPERTIES; SOLID-SOLUTIONS; OXIDE SCALES; KINETICS; AIN; COMPOSITES; SYSTEM; MICROSTRUCTURE AB The oxidation mechanisms in SiC-AIN solid solutions, exposed at 1370 degrees C for 200 h in air, have been investigated by scanning electron microscopy (SEM), analytical and high-resolution electron microscopy (HREM), and X-ray diffraction techniques, Five hot-pressed compositions, including pure SiC and pure AlN, were examined, Assuming parabolic rate behavior, the values of the parabolic rate constants based on oxide layer thickness increased by over 2 orders of magnitude by increasing AIN contents from 0% to 62%, A continuous amorphous phase containing cristobalite and mullite crystallites was present at the oxide layer in 13% AlN and 27% AlN samples, Two reaction layers mere found in the oxidized SiC-62% AlN solid solution. The inner layer consisted of a mixture of beta-SiAlON and graphite phases, while the outer layer consisted of mullite as a major phase and cristobalite as a minor phase, The oxidation proceeded in two stages: a partial oxidation of SIC-AIN to beta-SiAlON and carbon (graphite), and a final oxidation of beta-SiAlON to mullite + SiO2. C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP XU, Y (reprint author), UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801, USA. NR 45 TC 13 Z9 13 U1 1 U2 1 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD OCT PY 1995 VL 78 IS 10 BP 2753 EP 2762 DI 10.1111/j.1151-2916.1995.tb08051.x PG 10 WC Materials Science, Ceramics SC Materials Science GA TJ791 UT WOS:A1995TJ79100025 ER PT J AU NEYLON, TA AF NEYLON, TA TI PAGETS-DISEASE OF BONE PRESENTING AS CHRONIC ANKLE PAIN SO JOURNAL OF THE AMERICAN PODIATRIC MEDICAL ASSOCIATION LA English DT Note C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER PODIATRIC MED ASSN PI BETHESDA PA 9312 OLD GEORGETOWN ROAD, BETHESDA, MD 20814-1621 SN 0003-0538 J9 J AM PODIAT MED ASSN JI J. Am. Podiatr. Med. Assoc. PD OCT PY 1995 VL 85 IS 10 BP 556 EP 559 PG 4 WC Orthopedics SC Orthopedics GA RZ083 UT WOS:A1995RZ08300011 PM 7473093 ER PT J AU MCVAY, M RISH, J AF MCVAY, M RISH, J TI FLOW OF NITROGEN AND SUPERHEATED STEAM THROUGH CEMENT MORTAR SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Note C1 USAF,CIVIL ENGN SUPPORT AGCY,TYNDALL AFB,FL 32403. RP MCVAY, M (reprint author), UNIV FLORIDA,345 WEIL HALL,GAINESVILLE,FL 32611, USA. NR 3 TC 6 Z9 6 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD OCT-DEC PY 1995 VL 9 IS 4 BP 790 EP 792 DI 10.2514/3.740 PG 3 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA TB802 UT WOS:A1995TB80200030 ER PT J AU MOKULIS, JA ARNDT, WF DOWNEY, JR CABALLERO, RL THOMPSON, IM AF MOKULIS, JA ARNDT, WF DOWNEY, JR CABALLERO, RL THOMPSON, IM TI SHOULD RENAL ULTRASOUND BE PERFORMED IN THE PATIENT WITH MICROSCOPIC HEMATURIA AND A NORMAL EXCRETORY UROGRAM SO JOURNAL OF UROLOGY LA English DT Article DE ULTRASONOGRAPHY; HEMATURIA; UROGRAPHY; DIAGNOSTIC IMAGING ID NEOPLASMS AB Purpose: We determine what additional information would be detected by renal ultrasonography that was not identified by a normal excretory urogram (IVP) performed for the evaluation of microscopic hematuria. Materials and Methods: A retrospective review was done of 101 patients with microscopic hematuria and a normal IVP who underwent renal ultrasonography. Results: Of the 101 patients with microscopic hematuria and a normal IVP, renal ultrasonography was abnormal in 20%. All findings were ultimately proved to be of no clinical significance, although 6 of 21 patients required a total of 10 additional studies, including 9 computerized tomography scans and 1 renal arteriogram. Conclusions: These data demonstrate that renal ultrasonography is unnecessary in a patient with microscopic hematuria and a normal IVP. C1 BROOKE ARMY MED CTR,DEPT UROL,SAN ANTONIO,TX. BROOKE ARMY MED CTR,DEPT RADIOL,SAN ANTONIO,TX. RP MOKULIS, JA (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,SAN ANTONIO,TX 78236, USA. NR 8 TC 3 Z9 3 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD OCT PY 1995 VL 154 IS 4 BP 1300 EP 1301 DI 10.1016/S0022-5347(01)66841-1 PG 2 WC Urology & Nephrology SC Urology & Nephrology GA RU472 UT WOS:A1995RU47200004 PM 7658523 ER PT J AU WOOD, DP PERETSMAN, SJ SEAY, TM AF WOOD, DP PERETSMAN, SJ SEAY, TM TI INCIDENCE OF BENIGN AND MALIGNANT PROSTATE TISSUE IN BIOPSIES OF THE BLADDER NECK AFTER A RADICAL PROSTATECTOMY SO JOURNAL OF UROLOGY LA English DT Article DE PROSTATECTOMY; PROSTATIC NEOPLASMS; ANTIGENS, NEOPLASM; NEOPLASM STAGING; BLADDER ID RETROPUBIC PROSTATECTOMY; URINARY CONTINENCE; ANTIGEN; SERUM AB Purpose: We determined whether bladder neck sparing radical prostatectomy may leave prostate tissue in the unresected bladder neck. Materials and Methods: We intraoperatively evaluated the presence of prostate tissue in bladder neck biopsy specimens from 73 consecutive patients undergoing bladder neck sparing radical prostatectomy. Results: Of the 73 specimens 14 (19%) contained prostate tissue: 9 (12%) were positive for prostate cancer and 5 (7%) contained benign prostate tissue. All patients with a positive bladder neck biopsy had a positive margin at another site. Conclusions: We recommend routine bladder neck biopsies for patients undergoing a bladder neck sparing procedure. C1 WILFORD HALL USAF MED CTR,DEPT UROL,SAN ANTONIO,TX 78236. RP WOOD, DP (reprint author), UNIV KENTUCKY,ALBERT B CHANDLER MED CTR,DEPT SURG,DIV UROL,800 ROSE ST,LEXINGTON,KY 40536, USA. FU NCI NIH HHS [CA-68521] NR 18 TC 32 Z9 32 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD OCT PY 1995 VL 154 IS 4 BP 1443 EP 1446 DI 10.1016/S0022-5347(01)66887-3 PG 4 WC Urology & Nephrology SC Urology & Nephrology GA RU472 UT WOS:A1995RU47200050 PM 7658554 ER PT J AU CESPEDES, RD PERETSMAN, SJ BLATT, SP AF CESPEDES, RD PERETSMAN, SJ BLATT, SP TI THE SIGNIFICANCE OF HEMATURIA IN PATIENTS INFECTED WITH THE HUMAN-IMMUNODEFICIENCY-VIRUS SO JOURNAL OF UROLOGY LA English DT Article DE HUMAN IMMUNODEFICIENCY VIRUS; HEMATURIA; ACQUIRED IMMUNODEFICIENCY SYNDROME ID UROLOGICAL MANIFESTATIONS; AIDS; DISEASE; SARCOMA AB Purpose: We determined the importance of hematuria in patients infected with the human immunodeficiency virus (HIV). Materials and Methods: The records of 1,326 HIV infected patients with yearly evaluations were reviewed for hematuria and evaluation results. Mean followup was 2.1 years. Results: A total of 331 patients (25.0%) had 1 episode of hematuria and 67 were evaluated with 5 significant diagnoses made. Management was affected in only 3 of these patients. No occult genitourinary tumors were found. Conclusions: In young, asymptomatic, HIV infected patients with microscopic hematuria a urological evaluation can be safely omitted in the presence of normal renal function and a benign urological history. C1 WILFORD HALL USAF MED CTR,DEPT INFECT DIS,SAN ANTONIO,TX 78236. RP CESPEDES, RD (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,PSSU,2200 BERGQUIST DR,SUITE 1,SAN ANTONIO,TX 78236, USA. NR 12 TC 12 Z9 12 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD OCT PY 1995 VL 154 IS 4 BP 1455 EP 1456 DI 10.1016/S0022-5347(01)66890-3 PG 2 WC Urology & Nephrology SC Urology & Nephrology GA RU472 UT WOS:A1995RU47200053 PM 7658557 ER PT J AU BAROHN, RJ JACKSON, CE ADAMS, KK GRONSETH, GS AF BAROHN, RJ JACKSON, CE ADAMS, KK GRONSETH, GS TI AN ELECTROPHYSIOLOGIC COMPARISON OF STAINLESS-STEEL AND ADHESIVE RECORDING ELECTRODES FOR NERVE-CONDUCTION STUDIES SO MUSCLE & NERVE LA English DT Letter C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. RP BAROHN, RJ (reprint author), UNIV TEXAS,SW MED CTR,5323 HARRY HINES BLVD,DALLAS,TX 75235, USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-639X J9 MUSCLE NERVE JI Muscle Nerve PD OCT PY 1995 VL 18 IS 10 BP 1218 EP 1219 PG 2 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA RU575 UT WOS:A1995RU57500026 PM 7659123 ER PT J AU STURM, TA RICHMOND, R DUNCAN, BD AF STURM, TA RICHMOND, R DUNCAN, BD TI A TECHNIQUE FOR REMOVING PLATFORM VIBRATION NOISE FROM A PULSED LADAR VIBRATION SENSOR SO OPTICS AND LASER TECHNOLOGY LA English DT Article DE VIBRATION SENSORS; RADAR; LASER RADAR; DOPPLER RADAR AB A technique has been developed for removing platform-induced vibration noise from a pulsed ladar vibration sensor. Deriving the vibrational characteristics of the platform is accomplished by simulating ambient atmospheric aerosols as a stationary reference target. Using a pulsed coherent detection ladar, the instantaneous Doppler frequency shifts from both aerosols and a distant hard target are measured and recorded, while the data acquisition is range gated so that both Doppler measurements are made from a single pulse. Periodic measurements are then made to develop a time history of the fluctuations in the Doppler signals, after which two vibration spectra are derived by Fourier transforming the time histories of the instantaneous Doppler shifts. The first spectrum contains information regarding the relative motion between the target and platform, while the second spectrum contains information regarding the relative motion between the platform and the stationary aerosols. When the second spectrum is subtracted from the first, the resulting spectrum is the true vibrational signature of the target, The advantages of this new technique over conventional continuous wave ladar vibration sensors are: target range information is obtainable; the average power required from the laser is significantly reduced; and additional sensing equipment is not needed to derive the platform-induced noise spectrum. The principles of this technique are experimentally verified using a 2 mu m pulsed ladar. C1 USAF,WRIGHT LAB,AARI 2,ELECTROOPT SENSORS GRP,WRIGHT PATTERSON AFB,OH 45433. RP STURM, TA (reprint author), UNIV DAYTON,CTR ELECTROOPT,300 COLL PK,DAYTON,OH 45469, USA. NR 15 TC 1 Z9 1 U1 1 U2 2 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0030-3992 J9 OPT LASER TECHNOL JI Opt. Laser Technol. PD OCT PY 1995 VL 27 IS 5 BP 343 EP 350 DI 10.1016/0030-3992(95)98695-O PG 8 WC Optics; Physics, Applied SC Optics; Physics GA TG737 UT WOS:A1995TG73700014 ER PT J AU GULLEY, ML SARGEANT, KP GRIDER, DJ EAGAN, PA DAVEY, DD DAMM, DD ROBINSON, RA VANDERSTEEN, DP MCGUFF, S BANKS, PM AF GULLEY, ML SARGEANT, KP GRIDER, DJ EAGAN, PA DAVEY, DD DAMM, DD ROBINSON, RA VANDERSTEEN, DP MCGUFF, S BANKS, PM TI LYMPHOMAS OF THE ORAL SOFT-TISSUES ARE NOT PREFERENTIALLY ASSOCIATED WITH LATENT OR REPLICATIVE EPSTEIN-BARR-VIRUS SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID NON-HODGKINS-LYMPHOMAS; ACQUIRED-IMMUNODEFICIENCY-SYNDROME; T-CELL LYMPHOMAS; MORPHOLOGICAL SUBDIVISION; CLINICAL-SIGNIFICANCE; GENE-EXPRESSION; DNA; LEUKOPLAKIA; DISEASE; RNAS AB Objectives. Epstein-Barr virus is periodically shed in the saliva of persons infected by the virus.Epstein-Barr virus has been implicated in the pathogenesis of certain subtypes of lymphoma, particularly high-grade lymphomas. Because high-grade subtypes represent the majority of lymphomas that arise in oral soft tissues, we hypothesized that Epstein-Barr virus might be preferentially associated with oral lymphomas. Study Design, A series of 34 oral lymphomas were diagnosed according to the revised European-American classification scheme. They were examined for the presence of latent Epstein-Barr virus by EBER1 in situ hybridization and for expression of the Epstein-Barr virus replicative protein, BZLF1, by immunohistochemistry. Results, Epstein-Barr virus EBER1 transcripts were detected in 11 of 31 oral lymphomas including 7 of 10 AIDS-related lymphomas and only 4 of 21 lymphomas that occurred in nonimmunocompromised persons. The Epstein-Barr virus-containing lymphomas were art high-grade histologic subtypes, that is, diffuse large cell, immunoblastic, or Burkitt's lymphomas. In contrast, Epstein-Barr virus was not detected in any of five tow-grade oral lymphomas. in the single case of T-cell lymphoma in this study, EBER1 was expressed in the tumor cells. A switch from viral latency to replication, as measured by EBV BZLF1 expression, was identified in rare lymphoma cells in only four cases. This rate of viral replication was not higher than what has been reported in lymphomas arising at other anatomic sites. Although one of our lymphomas arose at a site oi previous oral hairy leukoplakia, there was no other evidence that Epstein-Barr virus replication predisposed to development or persistence of oral lymphomas. Conclusions. These data suggest that even though Epstein-Barr virus is frequently found in oral secretions, neither latent nor replicative Epstein-Barr virus is present more commonly in oral lymphomas than in lymphomas arising in other anatomic sites, when controlling for immunodeficiency status. C1 AUDIE L MURPHY MEM VET ADM MED CTR,SAN ANTONIO,TX 78284. BROOKE ARMY MED CTR,FT SAM HOUSTON,TX 78234. UNIV KENTUCKY,MED CTR,LEXINGTON,KY 40506. UNIV IOWA HOSP & CLIN,IOWA CITY,IA 52242. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX. RP GULLEY, ML (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. FU NCI NIH HHS [K08-CA01615] NR 35 TC 15 Z9 15 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD OCT PY 1995 VL 80 IS 4 BP 425 EP 431 PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TA766 UT WOS:A1995TA76600015 PM 8521106 ER PT J AU WEBER, YS ORAN, ES BORIS, JP ANDERSON, JD AF WEBER, YS ORAN, ES BORIS, JP ANDERSON, JD TI THE NUMERICAL-SIMULATION OF SHOCK BIFURCATION NEAR THE END WALL OF A SHOCK-TUBE SO PHYSICS OF FLUIDS LA English DT Article AB The reflection of a normal shock wave from the end wall of a two-dimensional channel has been numerically simulated to investigate the unsteady, viscous interaction aspects of shock bifurcation. The numerical simulation implements a data-parallel version of the Flux-Corrected Transport algorithm that has been coupled to the viscous transport terms of the Navier-Stokes equations. All numerical simulations were performed on the Connection Machine, the CM-5. The results indicate that the shear layer in the bifurcation zone is unstable, and the large and small scale vortices lead to complex flow patterns. In addition, the high-speed, essentially inviscid flow, which is adjacent to the shear layer, is deflected over this region. As a result, weak shock and expansions waves are generated and a reattachment shock is formed at the trailing edge of the interaction region. The impact of heat transfer, Reynolds number, and incident shock strength on the viscous interaction is also investigated. Heat transfer to the walls weakens the interaction between the boundary layer and the reflected shock. However, the decreased Reynolds number and increased shock strength enhances the interaction. (C) 1995 American Institute of Physics. C1 USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,WASHINGTON,DC 20375. UNIV MARYLAND,DEPT AEROSP ENGN,COLLEGE PK,MD 20742. RP WEBER, YS (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 31 TC 16 Z9 16 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1070-6631 J9 PHYS FLUIDS JI Phys. Fluids PD OCT PY 1995 VL 7 IS 10 BP 2475 EP 2488 DI 10.1063/1.868691 PG 14 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RW579 UT WOS:A1995RW57900019 ER PT J AU SLATE, S MCKEE, M BECK, W ALM, J AF SLATE, S MCKEE, M BECK, W ALM, J TI TESTING RICARDIAN EQUIVALENCE UNDER UNCERTAINTY SO PUBLIC CHOICE LA English DT Article ID BUDGET DEFICITS AB This paper uses experimental methods to analyze Ricardian equivalence when the probability of debt retirement is less than one. The results suggest that the presence of outstanding debt and the probability of debt retirement have a strong influence on savings behavior. When the probability of debt retirement is low, consumption by the current generation increases, as predicted by Keynesian theory. However, as the probability of debt retirement increases, bequests rise to offset the future generation's expected repayment liability, and deficit spending becomes much less expansionary, as predicted by Ricardian theory. In general, the average bequest is significantly larger when an outstanding debt is passed on to the next generation than when no debt exists, regardless of the probability of debt retirement. However, as long as there is some uncertainty about debt repayment, the presence of debt always stimulates some additional consumption, so that strong variants of Ricardian equivalence are not found. C1 UNIV NEW MEXICO,DEPT ECON,ALBUQUERQUE,NM 87131. UNIV COLORADO,DEPT ECON,BOULDER,CO 80309. RP SLATE, S (reprint author), USAF ACAD,DEPT ECON,COLORADO SPRINGS,CO 80840, USA. NR 13 TC 4 Z9 4 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0048-5829 J9 PUBLIC CHOICE JI Public Choice PD OCT PY 1995 VL 85 IS 1-2 BP 11 EP 29 DI 10.1007/BF01047899 PG 19 WC Economics; Political Science SC Business & Economics; Government & Law GA TG775 UT WOS:A1995TG77500002 ER PT J AU CRONIN, WJ OSWALD, EJ SHELLEY, ML FISHER, JW FLEMMING, CD AF CRONIN, WJ OSWALD, EJ SHELLEY, ML FISHER, JW FLEMMING, CD TI A TRICHLOROETHYLENE RISK ASSESSMENT USING A MONTE-CARLO ANALYSIS OF PARAMETER UNCERTAINTY IN CONJUNCTION WITH PHYSIOLOGICALLY-BASED PHARMACOKINETIC MODELING SO RISK ANALYSIS LA English DT Article DE TRICHLOROETHYLENE; RISK ASSESSMENT; CANCER; PHYSIOLOGICALLY BASED PHARMACOKINETIC MODELING; MONTE CARLO ANALYSIS ID LIVER AB A Monte Carlo simulation is incorporated into a risk assessment for trichloroethylene (TCE) using physiologically-based pharmacokinetic (PBPK) modeling coupled with the linearized multistage model to derive human carcinogenic risk extrapolations. The Monte Carlo technique incorporates physiological parameter variability to produce a statistically derived range of risk estimates which quantifies specific uncertainties associated with PBPK risk assessment approaches. Both inhalation and ingestion exposure routes are addressed. Simulated exposure scenarios were consistent with those used by the Environmental Protection Agency (EPA) in their TCE risk assessment. Mean values of physiological parameters were gathered from the literature for both mice (carcinogenic bioassay subjects) and for humans. Realistic physiological value distributions were assumed using existing data on variability. Mouse cancer bioassay data were correlated to total TCE metabolized and area-under-the-curve (blood concentration) trichloroacetic acid (TCA) as determined by a mouse PBPK model, These internal dose metrics were used in a linearized multistage model analysis to determine dose metric values corresponding to 10(-6) lifetime excess cancer risk. Using a human PBPK model, these metabolized doses were then extrapolated to equivalent human exposures (inhalation and ingestion). The Monte Carlo iterations with varying mouse and human physiological parameters produced a range of human exposure concentrations producing a 10(-6) risk. C1 ARMSTRONG LAB,DIV TOXICOL,WRIGHT PATTERSON AFB,OH 45433. MANTECH ENVIRONM TECHNOL INC,DAYTON,OH. RP CRONIN, WJ (reprint author), USAF,INST TECHNOL,DEPT ENGN & ENVIRONM MANAGEMENT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 16 Z9 17 U1 0 U2 6 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD OCT PY 1995 VL 15 IS 5 BP 555 EP 565 DI 10.1111/j.1539-6924.1995.tb00752.x PG 11 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA TJ474 UT WOS:A1995TJ47400003 PM 7501875 ER PT J AU FREI, MR RYAN, KL BERGER, RE JAUCHEM, JR AF FREI, MR RYAN, KL BERGER, RE JAUCHEM, JR TI SUSTAINED 35-GHZ RADIOFREQUENCY IRRADIATION INDUCES CIRCULATORY FAILURE SO SHOCK LA English DT Article ID SYMPATHETIC-NERVE ACTIVITY; HEATING RATE; TEMPERATURE; RESPONSES; INJURY; SKIN AB The objective of this study was to determine the thermal distribution and concomitant cardiovascular changes produced by whole-body exposure of ketamine-anesthetized rats to radiofrequency radiation of millimeter wave (MMW) length. Rats (n = 13) were implanted with a flow probe on the superior mesenteric artery and with a catheter in the carotid artery for the measurement of arterial blood pressure. Temperature was measured at five sites: left (T-sl) and right subcutaneous (sides toward and away from the MMW source, respectively), colonic (T-cl), tympanic, and tail. The animals were exposed until death to MMW (35 GHz) at a power density that resulted in a whole-body specific absorption rate of 13 W/kg. During irradiation, the T-sl increase was significantly greater than the T-c increase. Heart rate increased throughout irradiation. Mean arterial pressure (MAP) was well maintained until T-sl reached 42 degrees C, at which point MAP declined until death. Mesenteric vascular resistance tended to increase during the early Stages of irradiation but began to decrease at T-sl greater than or equal to 41 degrees C. The declines in both mesenteric vascular resistance and MAP began at T-c < 37.5 degrees C; death occurred at T-c = 40.3 +/- .3 degrees C and T-sl = 48.0 +/- .4 degrees C. These data indicate that circulatory failure and subsequent death may occur when skin temperature is rapidly elevated, even in the presence of relatively normal T-c. C1 OPERAT TECHNOL CORP,SAN ANTONIO,TX 78229. USAF,ARMSTRONG LAB,DIV RADIOFREQUENCY RADIAT,BROOKS AFB,TX 78235. RP FREI, MR (reprint author), TRINITY UNIV,DEPT BIOL,715 STADIUM DR,SAN ANTONIO,TX 78212, USA. NR 32 TC 25 Z9 30 U1 0 U2 0 PU BIOMEDICAL PRESS PI AUGUSTA PA 1021 15TH ST, BIOTECH PARK STE 9, AUGUSTA, GA 30901 SN 1073-2322 J9 SHOCK JI Shock PD OCT PY 1995 VL 4 IS 4 BP 289 EP 293 DI 10.1097/00024382-199510000-00010 PG 5 WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System & Cardiology GA RZ173 UT WOS:A1995RZ17300010 PM 8564558 ER PT J AU HO, CS LIOU, JJ PARTHASARATHY, A LIN, SF HUANG, CI AF HO, CS LIOU, JJ PARTHASARATHY, A LIN, SF HUANG, CI TI CURRENT TRANSPORT IN ALGAAS/GAAS HETEROJUNCTION BIPOLAR-TRANSISTORS OPERATING BETWEEN 300 AND 500 K SO SOLID-STATE ELECTRONICS LA English DT Article ID P-N; GAAS; DESIGN AB The current transport in AlGaAs/GaAs heterojunction bipolar transistors (HBTs) operating in the temperature range of 300-500 K is investigated based on an analytical model including the lattice heating effect. It is found that an uneven increase in the base and collector currents gives rise to the current gain degradation at high temperatures. In addition, the study suggests that the effect of lattice heating becomes more important if the HBT area is reduced and/or the ambient temperature is increased. Experimental data and results simulated from a device simulator are included in support of our finding. C1 UNIV CENT FLORIDA,DEPT ELECT & COMP ENGN,ORLANDO,FL 32816. USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 16 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD OCT PY 1995 VL 38 IS 10 BP 1759 EP 1763 DI 10.1016/0038-1101(94)00295-Q PG 5 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RV657 UT WOS:A1995RV65700005 ER PT J AU POSTA, CG AF POSTA, CG TI UNEXPECTED MIRIZZI ANATOMY - A MAJOR HAZARD TO THE COMMON BILE-DUCT DURING LAPAROSCOPIC CHOLECYSTECTOMY SO SURGICAL LAPAROSCOPY & ENDOSCOPY LA English DT Note DE MIRIZZI SYNDROME; GALLSTONES; COMMON HEPATIC DUCT; ANATOMY; LAPAROSCOPIC CHOLECYSTECTOMY ID MANAGEMENT; DIAGNOSIS; FISTULA AB Mirizzi's syndrome is described as an impaction of gallstone(s) in the infundibulum, Hartmann's pouch, or cystic duct in close proximity to the common hepatic duct, causing secondary inflammation, hepatic duct obstruction, and jaundice. This anatomical configuration can unexpectedly present itself during laparoscopic cholecystectomy without the associated clinical syndrome. Identification of the gallbladder-cystic duct junction may become impossible, leading to dangerous exposure of the common duct. The case presented here demonstrates the dangers and difficulties encountered with such anatomy. Increased awareness of this rare and unusual configuration may help in avoiding injuries to the biliary tree during laparoscopic cholecystectomy. C1 USAF HOSP,GEN SURG SERV,HILL AFB,UT. NR 16 TC 22 Z9 26 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 1051-7200 J9 SURG LAPAROSC ENDOSC JI Surg. Laparoscopy Endosc. PD OCT PY 1995 VL 5 IS 5 BP 412 EP 414 PG 3 WC Surgery SC Surgery GA RX612 UT WOS:A1995RX61200015 PM 8845990 ER PT J AU BUNNING, TJ KREUZER, FH AF BUNNING, TJ KREUZER, FH TI CYCLOSILOXANE-BASED LIQUID-CRYSTALLINE MATERIALS SO TRENDS IN POLYMER SCIENCE LA English DT Article ID CONFORMATIONAL ISOMERISM; LINEAR POLYMER; NEMATIC PHASE; SIDE GROUPS; SILOXANE; 1-(4-HYDROXY-4'-BIPHENYLYL)-2-(4-HYDROXYPHENYL)BUTANE; TRANSFORMATION; POLYSILOXANES; CYCLIZATION; GENERATION AB The reduced melt viscosity of low molar mass liquid crystals in the mesophase combined with the glass-forming propensity (above room temperature) of liquid crystalline polymers are characteristics of hybrid low molar mass liquid crystals. This combination of properties has advantages in the fabrication of uniform thin films with useful optical applications. Only one class of hybrid liquid crystals has been examined in any detail, those based on cyclosiloxane liquid crystalline materials. Formation of cholesteric glasses exhibiting selective reflection is discussed. Manipulation of the pitch allows for stable, glassy, iridescent thin films to be fabricated. Incorporation of photochromic and nonlinear optical molecules into these thin films leads to potential uses in a variety of applications. C1 SCI APPLICAT INT CORP,WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,OH 45433. CENT RES CO WACKERCHEM GMBH,CONSORTIUM ELEKTROCHEM IND GMBH,W-8000 MUNICH 70,GERMANY. NR 55 TC 105 Z9 106 U1 0 U2 14 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0966-4793 J9 TRENDS POLYM SCI JI Trends Polym. Sci. PD OCT PY 1995 VL 3 IS 10 BP 318 EP 323 PG 6 WC Polymer Science SC Polymer Science GA TB062 UT WOS:A1995TB06200002 ER PT J AU SHARMA, SK ROSADO, L HOGLUND, E HAMROCK, BJ AF SHARMA, SK ROSADO, L HOGLUND, E HAMROCK, BJ TI RHEOLOGY OF PERFLUOROPOLYALKYLETHER FLUIDS IN ELASTOHYDRODYNAMIC LUBRICATION SO TRIBOLOGY TRANSACTIONS LA English DT Article; Proceedings Paper CT 49th Annual Meeting of the Society-of-Tribologists-and-Lubrication-Engineers CY MAY 01-05, 1994 CL PITTSBURGH, PA SP Soc Tribologists & Lubricat Engineers DE ELASTOHYDRODYNAMIC LUBRICATION; LUBRICANT RHEOLOGY; VISCOSITY; PERFLUOROPOLYALKYLETHER ID PRESSURE AB The theological characteristics of two branched and two linear, commercial perfluoropolyalkylether (PFPAE) fluids were studied under high pressures and temperatures. The effects of branching and carbon-to-oxygen (C:O) ratio on the pressure-viscosity-temperature behavior and on the non-Newtonian behavior of these fluids were studied experimentally under high pressures and temperatures. The branching and the higher C:O ratio seemed to increase the pressure-viscosity coefficients of these fluids. The effects of the viscosity and the pressure-viscosity coefficient on the capabilities of these fluids to generate elastohydrodynamic lubrication (EHL) film thickness were studied and compared with experimental measurements. All of the fluids studied seemed to follow the Roelands viscosity model and classical EHL theory (1). The C:O ratio also influenced the temperature dependence of the limiting-shear-strength proportionality constant. The results show that for similar-viscosity fluids, the linear PFPAE with higher C:O ratio is most desirable for wide temperature use. C1 UNIV LULEA, DEPT MECH ENGN, S-95187 LULEA, SWEDEN. OHIO STATE UNIV, DEPT MECH ENGN, COLUMBUS, OH 43210 USA. RP SHARMA, SK (reprint author), USAF, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. NR 10 TC 10 Z9 10 U1 0 U2 2 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD OCT PY 1995 VL 38 IS 4 BP 769 EP 780 DI 10.1080/10402009508983470 PG 12 WC Engineering, Mechanical SC Engineering GA RY454 UT WOS:A1995RY45400003 ER PT J AU ZABINSKI, JS DONLEY, MS WALCK, SD SCHNEIDER, TR MCDEVITT, NT AF ZABINSKI, JS DONLEY, MS WALCK, SD SCHNEIDER, TR MCDEVITT, NT TI THE EFFECTS OF DOPANTS ON THE CHEMISTRY AND TRIBOLOGY OF SPUTTER-DEPOSITED MOS2 FILMS SO TRIBOLOGY TRANSACTIONS LA English DT Article; Proceedings Paper CT 49th Annual Meeting of the Society-of-Tribologists-and-Lubrication-Engineers CY MAY 01-05, 1994 CL PITTSBURGH, PA SP Soc Tribologists & Lubricat Engineers DE FRICTION; TRIBOLOGY; ADDITIVE EFFECTS; SURFACE FILMS COATINGS; MOLYBDENUM DISULFIDE; WEAR AND FAILURE ID BEAM-ASSISTED DEPOSITION; MORPHOLOGICAL PROPERTIES; LUBRICATION PROPERTIES; THIN-FILMS; COATINGS AB The fact that dopants improve the friction and weal properties of sputtered MoS2 films is well known. However, the role of dopants in the mechanisms governing friction and wear are not well understood. The purpose of this work is to gain a fundamental understanding of their role by co-depositing a number of materials, i.e., Ni, Fe, Au, and Sb2O3, with MoS2 and evaluating their effects on film chemistry, crystallinity, microstructure, and tribology. Friction and wear measurements were collected using ball-on-flat and dual-rub shoe tribometers. Other physical and chemical properties were obtained using SEM, XPS, XRD and Raman spectroscopy. Crystalline MoS2 was seen in all of the films. In Sb2O3-doped films, an amorphous phase was also observed. The presence of dopants caused film densification and affected crystallite size. They had little effect on the overall crystallite orientation. In addition, dopants caused a reduction in the mean and variance of the friction coefficient and an increase in wear life. The correlation between dopants, film properties, and tribology is discussed in detail. C1 HOHMAN PLATING & MFG,DAYTON,OH 45404. RAMSPEC RES,DAYTON,OH 45431. RP ZABINSKI, JS (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WL MLBT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 68 Z9 68 U1 3 U2 29 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD OCT PY 1995 VL 38 IS 4 BP 894 EP 904 DI 10.1080/10402009508983486 PG 11 WC Engineering, Mechanical SC Engineering GA RY454 UT WOS:A1995RY45400019 ER PT J AU WEBER, ET GANNON, RL MICHEL, AM GILLETTE, MU REA, MA AF WEBER, ET GANNON, RL MICHEL, AM GILLETTE, MU REA, MA TI NITRIC-OXIDE SYNTHASE INHIBITOR BLOCKS LIGHT-INDUCED PHASE-SHIFTS OF THE CIRCADIAN ACTIVITY RHYTHM, BUT NOT C-FOS EXPRESSION IN THE SUPRACHIASMATIC NUCLEUS OF THE SYRIAN-HAMSTER SO BRAIN RESEARCH LA English DT Article DE NITRIC OXIDE; CIRCADIAN RHYTHM; SUPRACHIASMATIC NUCLEUS; FOS; PHOTIC ENTRAINMENT ID PHOTIC INDUCTION; GENE-EXPRESSION; NERVOUS-SYSTEM; RAT; CEREBELLUM; CGMP; STIMULATION; ASTROCYTES; OSCILLATOR; GLUTAMATE AB Circadian rhythms in mammals are entrained to the environmental light cycle by daily adjustments in the phase of the circadian pacemaker located in the suprachiasmatic nuclei (SCN) of the hypothalamus. Brief exposure of hamsters maintained under constant darkness to ambient light during subjective nighttime produces both phase shifts of the circadian activity rhythm and characteristic patterns of c-fos protein (Fos) immunoreactivity in the SCN. In this study, we demonstrate that light-induced phase shifts of the circadian activity rhythm are blocked by intracerebroventricular (i.c.v.) injection of the competitive nitric oxide synthase (NOS) inhibitor, N-nitro-L-arginine methyl ester (L-NAME), but not by the inactive isomer, D-NAME. The effects of L-NAME are reversible and dose-related, and are countered by co-injection of arginine, the natural substrate for NOS. While effects on behavioral rhythms are pronounced, similar treatment does not alter the pattern of light-induced Fos immunoreactivity in the SCN. These results suggest that nitric oxide is a component of the signal transduction pathway that communicates photic information to the SCN circadian pacemaker, and that nitric oxide production is either independent of, or downstream from, pathways involved in induction of c-fos expression. C1 ARMSTRONG LAB,BRAIN RES INST,BROOKS AFB,TX 78235. UNIV ILLINOIS,DEPT CELL & STRUCT BIOL,URBANA,IL 61801. NR 37 TC 50 Z9 51 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-8993 J9 BRAIN RES JI Brain Res. PD SEP 18 PY 1995 VL 692 IS 1-2 BP 137 EP 142 PG 6 WC Neurosciences SC Neurosciences & Neurology GA RW358 UT WOS:A1995RW35800016 PM 8548297 ER PT J AU JENNY, JR SKOWRONSKI, M MITCHEL, WC HOBGOOD, HM GLASS, RC AUGUSTINE, G HOPKINS, RH AF JENNY, JR SKOWRONSKI, M MITCHEL, WC HOBGOOD, HM GLASS, RC AUGUSTINE, G HOPKINS, RH TI ON THE COMPENSATION MECHANISM IN HIGH-RESISTIVITY 6H-SIC DOPED WITH VANADIUM SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MAGNETIC CIRCULAR-DICHROISM; SILICON-CARBIDE; RESONANCE; IMPURITY AB A model is presented which describes the compensation mechanism resulting in semi-insulating 6H silicon carbide by vanadium doping. Undoped 6H-SiC crystals grown by physical vapor transport methods frequently contain between 1 X 10(17) and 5 X 10(18) cm(-3) uncompensated boron accepters. Upon addition of vanadium, the 3d(1) electron of the vanadium donor compensates the holes of the boron centers. It is shown that when vanadium is present in concentrations greater than that of boron, the Fermi level is pinned to the vanadium donor level. From temperature dependent Hall effect measurements, this donor level has been determined to reside 1.35 eV below the conduction band minimum. Thermally stimulated current measurements on V-doped SiC crystals show that boron is the major compensating center for the vanadium impurity. (C) 1995 American Institute of Physics. C1 MLPO,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235. RP JENNY, JR (reprint author), CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213, USA. RI Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 19 TC 53 Z9 54 U1 2 U2 7 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 1995 VL 78 IS 6 BP 3839 EP 3842 DI 10.1063/1.359899 PG 4 WC Physics, Applied SC Physics GA RU953 UT WOS:A1995RU95300041 ER PT J AU VOEVODIN, AA LAUBE, SJP WALCK, SD SOLOMON, JS DONLEY, MS ZABINSKI, JS AF VOEVODIN, AA LAUBE, SJP WALCK, SD SOLOMON, JS DONLEY, MS ZABINSKI, JS TI PULSED-LASER DEPOSITION OF DIAMOND-LIKE AMORPHOUS-CARBON FILMS FROM GRAPHITE AND POLYCARBONATE TARGETS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ELECTRON-ENERGY-LOSS; RAMAN-SPECTROSCOPY; VAPOR-DEPOSITION; EPITAXIAL-GROWTH; THIN-FILMS; EVAPORATION; ABLATION AB Amorphous carbon (a-C) and amorphous hydrogenated carbon (a-C:H) films are produced by 248 nm pulsed laser ablation of graphite and polycarbonate targets in high vacuum conditions. Plasma plumes generated by target irradiation with different laser fluences are investigated with laser induced fluorescence spectroscopy and an electrostatic probe. Ions of C2+ With kinetic energies of several hundred eV are detected in the leading edge of the plasma plumes from both targets. These energetic species are proposed to be responsible for the formation of film structures corresponding to diamond-like carbon (DLC), as it is found from electron-energy-loss spectroscopy (EELS) and Raman investigations of 0.5 mu m films deposited onto steel substrates. The validation of a laser wavelength/fluence region for DLC formation found earlier for graphite targets is discussed and expanded to polycarbonate targets. An increase in laser fluence leads to higher percentages of sp(3) bonds in the a-C and a-C:H films. For the a-C:H films, the incorporation of large molecular conglomerates ejected from polycarbonate targets results in the formation of unique heterogeneous structures revealed from scanning electron microscopy (SEM) studies. The embedded conglomerates cause a decrease in the a-C:H film hardness to 15 GPa, in comparison to 60 GPa for the a-C films. (C) 1995 American Institute of Physics. C1 UNIV DAYTON,DAYTON,OH 45469. RP VOEVODIN, AA (reprint author), USAF,WRIGHT LAB,MLBT,MLIM,WRIGHT PATTERSON AFB,OH 45433, USA. RI Voevodin, Andrey/I-6684-2013 NR 48 TC 113 Z9 113 U1 0 U2 17 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 15 PY 1995 VL 78 IS 6 BP 4123 EP 4130 DI 10.1063/1.359871 PG 8 WC Physics, Applied SC Physics GA RU953 UT WOS:A1995RU95300085 ER PT J AU WEBER, ET GANNON, RL REA, MA AF WEBER, ET GANNON, RL REA, MA TI CGMP-DEPENDENT PROTEIN-KINASE INHIBITOR BLOCKS LIGHT-INDUCED PHASE ADVANCES OF CIRCADIAN-RHYTHMS IN-VIVO SO NEUROSCIENCE LETTERS LA English DT Article DE CGMP-DEPENDENT PROTEIN KINASE; KT-5823; CGMP; CIRCADIAN; SUPRACHIASMATIC NUCLEUS, PHOTIC ENTRAINMENT ID NMDA RECEPTOR ANTAGONISTS; CENTRAL NERVOUS-SYSTEM; SUPRACHIASMATIC NUCLEUS; RETINOHYPOTHALAMIC PROJECTION; GOLDEN-HAMSTER; NITRIC-OXIDE; RAT; STIMULATION; GLUTAMATE; BEHAVIOR AB The suprachiasmatic nucleus (SCN) contains the primary mammalian circadian clock. Light synchronizes these circadian rhythms through a mechanism involving the release of excitatory amino acids (EAA) and synthesis of nitric oxide (NO) in the SCN. In the current study, we investigated whether cGMP-mediated activation of cGMP-dependent protein kinase (PKG) is associated with light-induced phase shifts of the circadian oscillator. Local administration of the specific PKG inhibitor, KT-5823, significantly attenuated light-induced advances in the phase of activity rhythms when administered during late subjective night (CT 19). Similar treatment at CT 14 had no significant effect on light-induced phase delays. These results are the first to implicate PKG in the biochemical pathway(s) responsible for photic phase advances, and suggest a divergence in biochemical pathways involved in photic phase shifts. C1 BIOL RHYTHMS & INTEGRAT NEUROSCI RES INST,ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 26 TC 58 Z9 60 U1 0 U2 0 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0304-3940 J9 NEUROSCI LETT JI Neurosci. Lett. PD SEP 15 PY 1995 VL 197 IS 3 BP 227 EP 230 DI 10.1016/0304-3940(95)11961-U PG 4 WC Neurosciences SC Neurosciences & Neurology GA TG736 UT WOS:A1995TG73600016 PM 8552305 ER PT J AU HE, GS XU, GC PRASAD, PN REINHARDT, BA BHATT, JC MCKELLAR, R DILLARD, AG AF HE, GS XU, GC PRASAD, PN REINHARDT, BA BHATT, JC MCKELLAR, R DILLARD, AG TI 2-PHOTON ABSORPTION AND OPTICAL-LIMITING PROPERTIES OF NOVEL ORGANIC-COMPOUNDS (VOL 20, PG 435, 1995) SO OPTICS LETTERS LA English DT Correction, Addition C1 USAF,WRIGHT LAB,MAT DIRECTORATE,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. SYSTRON CORP,DAYTON,OH 45432. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP HE, GS (reprint author), SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14260, USA. NR 1 TC 0 Z9 0 U1 0 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD SEP 15 PY 1995 VL 20 IS 18 BP 1930 EP 1930 DI 10.1364/OL.20.001930 PG 1 WC Optics SC Optics GA RU367 UT WOS:A1995RU36700033 PM 19862206 ER PT J AU TALWAR, DN AF TALWAR, DN TI STRUCTURE AND DYNAMICS OF CARBON, SILICON, AND HYDROGEN COMPLEXES IN ALAS, GAAS, AND ALXGA1-XAS SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-BEAM EPITAXY; LOCALIZED VIBRATIONAL-MODES; III-V SEMICONDUCTORS; DOPED GAAS; SUBSTITUTIONAL CARBON; DEFECT COMPLEXES; LATTICE SITES; DX CENTERS; SPECTROSCOPY; PAIRS AB The results of a comprehensive Green's-function calculation are reported for the structure and dynamics of the amphoteric behavior of silicon (Si-Ga(Al),Si-As), and the acceptor nature of beryllium and carbon (Be-Ga(Al),C-As] impurities in GaAs, AlAs, and AlxGa1-xAs. Impurity vibrational modes are studied for (i) the nearest-neighbor C-As-Al-Ga pairs (C-2v symmetry) in AlxGa1-xAs (for x < 0.04), (ii) the second-nearest-neighbor {e.g., C-As-Al(Ga)-C-As; Si-Al-As-Be-Al} pairs (C-2v/C-s symmetry) in AlAs (GaAs), and (iii) the passivated H-CA, complexes in GaAs and AlAs. Comparisons are made with the existing experimental and theoretical data. C1 INDIANA UNIV PENN,DEPT PHYS,INDIANA,PA 15705. RP TALWAR, DN (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELRA,WRIGHT PATTERSON AFB,OH 45433, USA. RI Schaff, William/B-5839-2009 NR 45 TC 9 Z9 9 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD SEP 15 PY 1995 VL 52 IS 11 BP 8121 EP 8131 DI 10.1103/PhysRevB.52.8121 PG 11 WC Physics, Condensed Matter SC Physics GA RV818 UT WOS:A1995RV81800062 ER PT J AU BLATT, D JIRA, JR LARSEN, JM AF BLATT, D JIRA, JR LARSEN, JM TI TIME-DEPENDENT DEGRADATION OF FIBER-MATRIX INTERFACES UNDER FATIGUE OF SCS-6 TIMETAL(R)21S SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID THERMAL FATIGUE; COMPOSITE RP BLATT, D (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 7 Z9 7 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 15 PY 1995 VL 33 IS 6 BP 939 EP 944 DI 10.1016/0956-716X(95)00310-R PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RR228 UT WOS:A1995RR22800014 ER PT J AU FOSTER, MA SMITH, PR MIRACLE, DB AF FOSTER, MA SMITH, PR MIRACLE, DB TI EFFECT OF HEAT-TREATMENT ON TENSILE AND CREEP-PROPERTIES OF NEAT TI-22AL-23NB IN THE TRANSVERSE ORIENTATION SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID TI-25AL-10NB-3V-1MO; BEHAVIOR C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP FOSTER, MA (reprint author), UNIVERSAL TECHNOL CORP,DAYTON,OH 45431, USA. NR 13 TC 5 Z9 6 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 15 PY 1995 VL 33 IS 6 BP 975 EP 981 DI 10.1016/0956-716X(95)00307-H PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RR228 UT WOS:A1995RR22800020 ER PT J AU HAGAN, RL HYNES, JB PIMSLER, M KISLIUK, RL AF HAGAN, RL HYNES, JB PIMSLER, M KISLIUK, RL TI STUDIES ON THE ANTITUMOR EFFECTS OF ANALOGS OF 5,8-DIDEAZAISOFOLIC ACID AND 5,8-DIDEAZAISOAMINOPTERIN SO BIOCHEMICAL PHARMACOLOGY LA English DT Article DE FOLIC ACID ANTAGONISTS; QUINAZOLINES; THYMIDYLATE SYNTHASE; TUMOR CELLS; CYTOTOXICITY ID COLON CARCINOMA-CELLS; THYMIDYLATE SYNTHASE; QUINAZOLINE; MECHANISM AB Six new analogues of 5,8-dideazaisofolic acid and 5,8-dideazaisoaminopterin were synthesized in an effort to obtain enhanced antitumor activity. The modifications included the replacement of the 2-amino group by hydrogen or methyl as well as the inclusion of a methyl substituent at position 9. Based upon activity against L1210 leukemia cells in culture, three of the new analogues together with one compound described previously were evaluated for cytotoxicity in vitro using three human tumor cell lines (Cole 320 DM, Hep G2 and HL-60). The most effective compound was 2-desamino-N-9-methyl-5,8-dideazaisoaminopterin (2c) with the HL-60 cells being the most sensitive to its cytotoxic effects. These analogues were evaluated in vitro as inhibitors of dihydrofolate reductase (DHFR) and thymidylate synthase (TS) from human as well as bacterial (Lactobacillus casei) sources. All four of the 4-amino analogues were most effective toward L. casei DHFR compared with human DHFR, with 2-desamino-2-methyl-5,8-dideazaisoaminopterin (2d) and its 9-methyl derivative (2e) having 818- and 430-fold greater selectivity (L. caseilhuman). Most of the compounds studied were found to be only modest inhibitors of human TS (I-50 values = 1.5 to 20 mu M) and were therefore at least 40-fold less inhibitory than 10-propargyl-5,8-dideazafolic acid. Nevertheless, reversal of cytotoxicity studies with thymidine, hypoxanthine and folinic acid using the HL-60 cell line suggested that TS is the primary target for these analogues. C1 MED UNIV S CAROLINA,DEPT PHARMACEUT SCI,CHARLESTON,SC 29425. TUFTS UNIV,SCH MED,DEPT BIOCHEM,BOSTON,MA 02111. RP HAGAN, RL (reprint author), DAVID GRANT MED CTR,CLIN INVEST FACIL,MED GRP 60,101 BODIN CIRCLE,TRAVIS AFB,CA 94535, USA. FU NCI NIH HHS [CA10914] NR 20 TC 6 Z9 6 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0006-2952 J9 BIOCHEM PHARMACOL JI Biochem. Pharmacol. PD SEP 7 PY 1995 VL 50 IS 6 BP 803 EP 809 DI 10.1016/0006-2952(95)00203-C PG 7 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA RW999 UT WOS:A1995RW99900010 PM 7575641 ER PT J AU LIAW, KL HSING, AW CHEN, CJ SCHIFFMAN, MH ZHANG, TY HSIEH, CY GREER, CE YOU, SL HUANG, TW WU, TC OLEARY, TJ SEIDMAN, JD BLOT, WJ MEINERT, CL MANOS, MM AF LIAW, KL HSING, AW CHEN, CJ SCHIFFMAN, MH ZHANG, TY HSIEH, CY GREER, CE YOU, SL HUANG, TW WU, TC OLEARY, TJ SEIDMAN, JD BLOT, WJ MEINERT, CL MANOS, MM TI HUMAN PAPILLOMAVIRUS AND CERVICAL NEOPLASIA - A CASE-CONTROL STUDY IN TAIWAN SO INTERNATIONAL JOURNAL OF CANCER LA English DT Article ID INTRAEPITHELIAL NEOPLASIA; RISK-FACTORS; INFECTION; CARCINOMA; COLOMBIA; CANCER; SPAIN; CHINA AB As part of a large-scale, community-based cervical neoplasia screening project in rural Taiwan, a case-control study was undertaken to evaluate the etiologic role of human papillomavirus (HPV) infection in this mainly monogamous (2% reported having multiple sexual partners) female population. A total of 88 biopsy-confirmed cases and 261 cytologically normal controls were selected for the study. The case group included 40 cases of cervical intraepithelial neoplasia (CIN) 1, 9 of CIN 2, 36 of CIN 3 and 3 cases of invasive cancer. Cervical swabs collected at screening from study subjects were tested for HPV DNA by an L1 consensus primer polymerase chain reaction (PCR)-based technique. HPV DNA was found in 92% of high-grade cases (GIN 2-3 and invasive cancer); 54% of low-grade cases (CIN 1); and 9% of controls. HPV was significantly associated with both high-grade and low-grade cervical neoplasia As reported in Western countries, HPV 16 was the predominant type among HPV-positive high-grade cases. However, HPVs 52 and/or 58 combined were the most common types among HPV-positive low-grade cases and controls. Among women without any high-risk HPV infection (types 16, 18, 31 or 45), those with multiple-type HPV infection had a higher risk for high-grade cervical neoplasia than those with single-type infection. Overall, 91% of high-grade cases and 50% of low-grade cases could be attributed to HPV infection. Our results show that, even in this monogamous population, HPV is the major risk factor for high-grade cervical neoplasia. (C) 1995 Wiley-Liss, Inc. C1 JOHNS HOPKINS UNIV,BALTIMORE,MD. NATL TAIWAN UNIV,TAIPEI,TAIWAN. ROCHE MOLEC SYST,ALAMEDA,CA. CHIRON CORP,EMERYVILLE,CA 94608. TAIPEI INST PATHOL,TAIPEI,TAIWAN. USAF,INST PATHOL,WASHINGTON,DC. RP LIAW, KL (reprint author), NCI,EPIDEMIOL & BIOSTAT PROGRAM,6130 EXECUT BLVD,ROOM 415,BETHESDA,MD 20892, USA. RI Chen, Chien-Jen/C-6976-2008 NR 30 TC 76 Z9 80 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0020-7136 J9 INT J CANCER JI Int. J. Cancer PD SEP 4 PY 1995 VL 62 IS 5 BP 565 EP 571 DI 10.1002/ijc.2910620513 PG 7 WC Oncology SC Oncology GA RT089 UT WOS:A1995RT08900012 PM 7665227 ER PT J AU STORROW, AB MAGOON, MR NORTON, J AF STORROW, AB MAGOON, MR NORTON, J TI THE DEXTROMETHORPHAN DEFENSE - DEXTROMETHORPHAN AND THE OPIOID SCREEN SO ACADEMIC EMERGENCY MEDICINE LA English DT Article DE TOXICOLOGY; DEXTROMETHORPHAN; DRUG SCREEN; OPIOIDS ID POPPY SEED; INGESTION AB Objective: To determine whether a single oral dose of dextromethorphan produces a falsely positive qualitative urine opioid screen. Methods: A prospective, randomized, triple-blind, placebo-controlled, crossover exposure study design was used. Twenty adult volunteers participated. All were without routine medications, not pregnant or lactating, without known sensitivity to dextromethorphan, and negative for urine toxicologic screening immediately prior to testing. These volunteers underwent three separate urine Enzyme-Multiplied Immunoassay Technique (EMIT) opioid screens. Each screen was performed six hours after the subject had; Ingested a single liquid medication, either dextromethorphan, codeine, or placebo. Each volunteer took all three medications randomly, at least 72 hours apart. Half of the volunteers took the standard adult dose of dextromethorphan (20 mg), while the other half ingested twice this amount (40 mg). The amounts of codeine (30 mg) and sucrose placebo (10 mt) remained constant. Results: For these young adults (mean age +/- SD = 30.7 +/- 2.8 years), all urine EMIT assays six hours after ingestion of dextromethorphan, at both dosage levels, were negative for opioids and all other drugs. All assays after codeine and placebo ingestion were positive and negative for opioids, respectively. Conclusion: Although dextromethorphan is structurally similar to opioid drugs, the ingestion of a single normal (or even twice normal) dose of dextromethorphan is not likely to produce a falsely positive six-hour urine opioid EMIT screen. C1 WILFORD HALL USAF MED CTR,JOINT MIL MED CTR,EMERGENCY MED RESIDENCY,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,JOINT MIL MED CTR,DEPT PATHOL,SAN ANTONIO,TX. NR 12 TC 10 Z9 10 U1 0 U2 0 PU HANLEY & BELFUS INC PI PHILADELPHIA PA 210 S 13TH ST, PHILADELPHIA, PA 19107 SN 1069-6563 J9 ACAD EMERG MED JI Acad. Emerg. Med. PD SEP PY 1995 VL 2 IS 9 BP 791 EP 794 DI 10.1111/j.1553-2712.1995.tb03273.x PG 4 WC Emergency Medicine SC Emergency Medicine GA RQ241 UT WOS:A1995RQ24100006 PM 7584765 ER PT J AU WEISS, L FINKELSTEIN, JA STORROW, AB AF WEISS, L FINKELSTEIN, JA STORROW, AB TI FEVER AND NECK PAIN SO ACADEMIC EMERGENCY MEDICINE LA English DT Note DE MEDICAL PHOTOGRAPHY; NECK INFECTION; LUDWIGS ANGINA; AIRWAY; DENTAL INFECTION ID ANGINA C1 WILFORD HALL USAF MED CTR,JOINT MIL MED CTR,EMERGENCY MED RESIDENCY,SAN ANTONIO,TX. NR 9 TC 0 Z9 0 U1 1 U2 1 PU HANLEY & BELFUS INC PI PHILADELPHIA PA 210 S 13TH ST, PHILADELPHIA, PA 19107 SN 1069-6563 J9 ACAD EMERG MED JI Acad. Emerg. Med. PD SEP PY 1995 VL 2 IS 9 BP 835 EP & DI 10.1111/j.1553-2712.1995.tb03282.x PG 0 WC Emergency Medicine SC Emergency Medicine GA RQ241 UT WOS:A1995RQ24100013 PM 7584772 ER PT J AU SKOP, BP BROWN, TM MARETH, TR AF SKOP, BP BROWN, TM MARETH, TR TI THE SEROTONIN SYNDROME-ASSOCIATED WITH PAROXETINE SO AMERICAN JOURNAL OF EMERGENCY MEDICINE LA English DT Letter RP SKOP, BP (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,LACKLAND AFB,TX 78236, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0735-6757 J9 AM J EMERG MED JI Am. J. Emerg. Med. PD SEP PY 1995 VL 13 IS 5 BP 606 EP 607 DI 10.1016/0735-6757(95)90185-X PG 2 WC Emergency Medicine SC Emergency Medicine GA RT777 UT WOS:A1995RT77700021 ER PT J AU CALICOTT, RW WAISEL, DB AF CALICOTT, RW WAISEL, DB TI THE RECOGNITION OF ANESTHESIA AS A SPECIALTY BY THE AMA SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 4 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A1022 EP A1022 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68501022 ER PT J AU CALICOTT, RW GRISSOM, T PAPIER, K POTERACK, K AF CALICOTT, RW GRISSOM, T PAPIER, K POTERACK, K TI ESTIMATION OF BLOOD-LOSS BY SURGEONS AND ANESTHESIOLOGISTS SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 1 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A999 EP A999 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68500999 ER PT J AU JOHNSON, RF JOHNSON, HV ARNEY, TL PASCHALL, RL HERMAN, N DOWNING, JW AF JOHNSON, RF JOHNSON, HV ARNEY, TL PASCHALL, RL HERMAN, N DOWNING, JW TI THE PLACENTAL-TRANSFER OF SUFENTANIL - EFFECTS OF FETAL PH, PROTEIN-BINDING AND SATURATION SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 VANDERBILT UNIV,DEPT ANESTHESIOL,NASHVILLE,TN 37232. USAF,WILFORD HALL MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 1 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A931 EP A931 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68500931 ER PT J AU LORENZINI, NA POTERACK, KA AF LORENZINI, NA POTERACK, KA TI SOMATOSENSORY-EVOKED POTENTIALS ARE NOT A SENSITIVE INDICATOR OF POTENTIAL POSITIONING INJURY IN THE PRONE POSITION SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 2 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A519 EP A519 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68500519 ER PT J AU NELSON, EJ GRISSOM, TE POTERACK, KA AF NELSON, EJ GRISSOM, TE POTERACK, KA TI CONTINUOUS GASTRIC SUCTIONING DECREASES MEASURED ESOPHAGEAL TEMPERATURE DURING GENERAL-ANESTHESIA SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 2 TC 1 Z9 1 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A400 EP A400 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68500400 ER PT J AU PAPIER, KS FREED, SM MURPHY, ME HERMAN, NL BIFANO, S POTERACK, KA AF PAPIER, KS FREED, SM MURPHY, ME HERMAN, NL BIFANO, S POTERACK, KA TI PREOPERATIVE DISCOMFORT SCORE PREDICTS POSTOPERATIVE PAIN SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,SAN ANTONIO,TX 78236. WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,SAN ANTONIO,TX 78236. NR 3 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A1098 EP A1098 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68501098 ER PT J AU WAISEL, DB MURPHY, ME KRISHNA, RP EDELL, TE AF WAISEL, DB MURPHY, ME KRISHNA, RP EDELL, TE TI HOW MUCH TIME DOES AN ATTENDING ACADEMIC ANESTHESIOLOGIST SPEND IN THE OPERATING-ROOM SO ANESTHESIOLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT ANESTHESIOL,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD SEP PY 1995 VL 83 IS 3A SU S BP A1015 EP A1015 PG 1 WC Anesthesiology SC Anesthesiology GA RX685 UT WOS:A1995RX68501015 ER PT J AU GOETZ, DW GOETZ, MA WHISMAN, BA AF GOETZ, DW GOETZ, MA WHISMAN, BA TI MOUNTAIN CEDAR ALLERGENS FOUND IN NONPOLLEN TREE PARTS SO ANNALS OF ALLERGY ASTHMA & IMMUNOLOGY LA English DT Article ID RAGWEED-POLLEN DETERMINANTS; ORAL IMMUNOTHERAPY; ATMOSPHERIC AEROSOL; DOUBLE-BLIND; POLLINOSIS; ANTIBODY; FRACTIONS; CARRIAGE; ANTIGEN; SMALLER AB Background: Mountain cedar (Juniperus ashei) pollen is the principal aeroallergen in south central Texas from late December through February. The major mountain cedar allergen is a 40-kD glycoprotein, gp40. Objective: To identify allergens in mountain cedar wood, leaves, and berries and to detect mountain cedar allergen in smoke from burning male or female trees. Methods: SDS-PAGE plus mountain cedar human sIgE and monoclonal antibody immunoblots identified mountain cedar allergens within pollen and nonpollen tree part extracts. Results: IgE immunoblots identified a single wood allergen at 36 kD and three berry allergens at 36, 26-27, and 21 kD, in addition to known pollen allergens. Mountain cedar monoclonal antibody bound an allergen epitope present not only on 40, 33, and 28-kD pollen allergens, but also on 36 and 32-kD wood allergens, and the 26-27-kD berry allergen. Immunoblot studies detected no mountain cedar allergen in leaves and no allergen in smoke from burning male and female trees. Allergens constituted a much smaller percentage of extractable protein in wood and berries than in pollen. Conclusions: Mountain cedar berry allergen content is too small to give credence to the ingestion of berries as a folk medicine treatment of mountain cedar pollinosis. in addition, while smoke from burning mountain cedar trees may be irritating, it contains no allergens that could cause allergic rhinoconjunctivitis. C1 UNIV PENN,SCH NURSING,PHILADELPHIA,PA 19104. RP GOETZ, DW (reprint author), WILFORD HALL USAF MED CTR,PSMA,DEPT ALLERGY IMMUNOL,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 27 TC 14 Z9 14 U1 0 U2 0 PU AMER COLL ALLERGY ASTHMA IMMUNOLOGY PI ARLINGTON HTS PA 85 WEST ALGONQUIN RD SUITE 550, ARLINGTON HTS, IL 60005 SN 1081-1206 J9 ANN ALLERG ASTHMA IM JI Ann. Allergy Asthma Immunol. PD SEP PY 1995 VL 75 IS 3 BP 256 EP 260 PG 5 WC Allergy; Immunology SC Allergy; Immunology GA RW224 UT WOS:A1995RW22400008 PM 7552928 ER PT J AU KING, JA STORROW, AB FINKELSTEIN, JA AF KING, JA STORROW, AB FINKELSTEIN, JA TI URINE TRINDER SPOT-TEST - A RAPID SALICYLATE SCREEN FOR THE EMERGENCY DEPARTMENT SO ANNALS OF EMERGENCY MEDICINE LA English DT Article AB Study objective: To determine whether the urine Trinder spot test, performed by emergency physicians, is a sensitive bedside screen for salicylates. Design: Prospective, blinded human protocol with subjects serving as their own controls. Setting: Urban Level I medical center. Participants: Ten male and two female volunteers with negative urine toxicologic screen results before the start of the study. Interventions: Each participant ingested 975 mg of nonenteric coated aspirin. Serum and urine samples were collected before ingestion and 2 and 4 hours after ingestion. Three emergency physicians and a toxicology technician independently performed Trinder spot tests. Results were recorded as positive or negative for salicylate on the basis of color change (a purple reading was considered positive). Results: All postingestion urine specimens were detected by all testers with 100% sensitivity. Two false positives occurred in the preingestion samples. Serum quantitative assays confirmed the presence of salicylates in all postingestion specimens. Conclusion: This pilot study suggests that emergency physicians can use the Trinder spot test as a sensitive bedside salicylate screen, potentially saving time and quantitative assay expense. RP KING, JA (reprint author), WILFORD HALL USAF MED CTR,DEPT EMERGENCY MED,JOINT MIL MED CTR EMERGENCY MED RESIDENCY PROGRAM,LACKLAND AFB,TX 78236, USA. NR 0 TC 8 Z9 8 U1 2 U2 4 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD SEP PY 1995 VL 26 IS 3 BP 330 EP 333 DI 10.1016/S0196-0644(95)70082-X PG 4 WC Emergency Medicine SC Emergency Medicine GA RR246 UT WOS:A1995RR24600012 PM 7661424 ER PT J AU ALLEN, RC NORRIS, RL AF ALLEN, RC NORRIS, RL TI DELAYED USE OF WIDOW SPIDER ANTIVENIN SO ANNALS OF EMERGENCY MEDICINE LA English DT Letter RP ALLEN, RC (reprint author), USAF MC,24TH SPECIAL TACT SQUADRON,POPE AFB,NC, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD SEP PY 1995 VL 26 IS 3 BP 393 EP 394 PG 2 WC Emergency Medicine SC Emergency Medicine GA RR246 UT WOS:A1995RR24600031 PM 7661442 ER PT J AU ARRIAGA, MA LO, WWM BRACKMANN, DE AF ARRIAGA, MA LO, WWM BRACKMANN, DE TI METASTATIC MELANOMA TO THE CEREBELLOPONTINE ANGLE - CLINICAL AND IMAGING CHARACTERISTICS SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Note ID MALIGNANT-MELANOMA; TEMPORAL BONE; GD-DTPA; TUMORS; LIPOMA; ENHANCEMENT; EXPERIENCE; BRAIN AB Objective: To describe the clinical and imaging features of metastatic melanoma to the cerebellopontine angle (CPA). Design: A case series study with world literature review. Setting: House Ear Clinic and St Vincent's Hospital, Los Angeles, Calif. Patients: Three cases of metastatic CPA tumors operated on at the House Ear Clinic. Interventions: All patients underwent surgical removal of CPA metastatic melanoma. Main Outcome Measure: Survival and duration of disease-free interval are reported. Results: Two patients died of melanoma within 5 months of diagnosis and resection of CPA, melanorna metastases. One patient survived for 5 years after undergoing total resection of an isolated CPA melanoma metastasis. Magnetic resonance imaging features were not uniform. Conclusions: Metastatic melanoma to the CPA should be suspected in patients with a history of melanoma and a rapid progression of audiovestibular or facial nerve symptoms. Surgical removal of solitary metastases to the CPA may be valuable in patients without other melanoma focus; however, the longterm prognosis for patients with CPA melanoma is grim. C1 ST VINCENTS MED CTR,DEPT RADIOL,LOS ANGELES,CA. UNIV SO CALIF,HOUSE EAR CLIN,LOS ANGELES,CA. RP ARRIAGA, MA (reprint author), WILFORD HALL USAF MED CTR,PSSO,DEPT OTOLARYNGOL,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 34 TC 13 Z9 13 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0886-4470 J9 ARCH OTOLARYNGOL JI Arch. Otolaryngol. Head Neck Surg. PD SEP PY 1995 VL 121 IS 9 BP 1052 EP 1056 PG 5 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA RU620 UT WOS:A1995RU62000017 PM 7646858 ER PT J AU MEILINGER, PS AF MEILINGER, PS TI THE ICARUS SYNDROME - THE ROLE OF AIR POWER THEORY IN THE EVOLUTION AND FATE OF THE US AIR-FORCE - BUILDER,CH SO ARMED FORCES & SOCIETY LA English DT Book Review RP MEILINGER, PS (reprint author), USAF,SCH ADV AIRPOWER STUDIES,MAXWELL AFB,AL, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU TRANSACTION PERIOD CONSORTIUM PI NEW BRUNSWICK PA DEPT 3091 RUTGERS-THE STATE UNIV OF NJ, NEW BRUNSWICK, NJ 08903 SN 0095-327X J9 ARMED FORCES SOC JI Armed Forces Soc. PD FAL PY 1995 VL 22 IS 1 BP 141 EP 143 DI 10.1177/0095327X9502200112 PG 3 WC Political Science; Sociology SC Government & Law; Sociology GA TE839 UT WOS:A1995TE83900012 ER PT J AU CARPENTER, MT HUGLER, R ENZENAUER, R KIRK, JM DESROSIER, KF AF CARPENTER, MT HUGLER, R ENZENAUER, R KIRK, JM DESROSIER, KF TI SEXUAL AND PHYSICAL ABUSE IN FEMALE-PATIENTS WITH FIBROMYALGIA SO ARTHRITIS AND RHEUMATISM LA English DT Meeting Abstract C1 FITZSIMONS ARMY MED CTR,AURORA,CO 80045. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78232. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD SEP PY 1995 VL 38 IS 9 SU S BP 568 EP 568 PG 1 WC Rheumatology SC Rheumatology GA RX684 UT WOS:A1995RX68400567 ER PT J AU DRUMMOND, JD CHRISTOU, JC FUGATE, RQ AF DRUMMOND, JD CHRISTOU, JC FUGATE, RQ TI FULL ADAPTIVE OPTICS IMAGES OF ADS-9731 AND MU-CASSIOPEIAE - ORBITS AND MASSES SO ASTROPHYSICAL JOURNAL LA English DT Article DE ASTROMETRY; BINARIES, VISUAL; INFRARED, STARS; STARS, EVOLUTION; STARS, FUNDAMENTAL PARAMETERS; STARS, INDIVIDUAL (ADS 9731, MU CASSIOPEIAE) ID STARS; ABUNDANCES AB The double double ADS 9731 and the nearby Population II astrometric binary mu Cas have been imaged with full adaptive optics employed at the 1.5 m telescope belonging to the USAF Phillips Laboratory's Star-fire Optical Range near Albuquerque, New Mexico. On 1994 May 4 at a wavelength of 0.85 mu m, the Delta mag values and separations for ADS 9731 components AB were observed to be 2.19 and 1.''127, 0.90 and 1.''55 for CD, and 0.40 and 14.''8 between A and C. Combining these observations with earlier ones, we have obtained circular, highly inclined, long-period (834 and 1230 yr) preliminary orbits for both pairs and derived their masses along with other astrophysical quantities. However, consideration of stellar evolutionary models leads to a disagreement in the derived distance to the system (108.1 pc) and/or masses, which will perhaps be resolved by subsequent orbital refinement. The first ever real-time images at short wavelengths (<1 mu m) of the faint companion to the astrometric binary mu Cas A component were easily made at 0.85 mu m on 1994 August 28 and October 22, with movement noted between the two dates. The Delta mag value was determined to be 4.9 +/- 0.1, and the separation on the two dates was 0.''73 and 0.''66. Combining our measurements with astrometric data from both Sproul and Allegheny Observatories, we make a simultaneous fit for a new master orbit and find masses of 0.742 +/- 0.059 and 0.173 +/- 0.011 M. for A and B, respectively. From further analysis we derive a presumably primordial helium abundance for mu Cas of Y = 0.24 +/- 0.07 for an assumed age of 10(10) yr and the latest measured metallicity of Z = 0.0021. RP DRUMMOND, JD (reprint author), USAF,PHILLIPS LAB,STARFIRE OPT RANGE,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 32 TC 37 Z9 37 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD SEP 1 PY 1995 VL 450 IS 1 BP 380 EP 391 DI 10.1086/176148 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RQ577 UT WOS:A1995RQ57700037 ER PT J AU SEIBOLD, MA AF SEIBOLD, MA TI AN AFGHAN AIRLIFT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Editorial Material RP SEIBOLD, MA (reprint author), USAF,NC,57TH AEROMED EVACUAT SQUADRON AMC,SCOTT AFB,IL 62225, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD SEP PY 1995 VL 66 IS 9 BP 905 EP 905 PN 1 PG 1 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RR602 UT WOS:A1995RR60200013 PM 7487832 ER PT J AU MALL, S WEIDENAAR, WA AF MALL, S WEIDENAAR, WA TI TENSION-COMPRESSION FATIGUE BEHAVIOR OF FIBER-REINFORCED CERAMIC-MATRIX COMPOSITE WITH CIRCULAR HOLE SO COMPOSITES LA English DT Article DE TENSION COMPRESSION FATIGUE BEHAVIOR; FIBER-REINFORCED CERAMIC MATRIX COMPOSITE; CIRCULAR HOLE ID CRACK INITIATION; GLASS AB The tension-compression fatigue behaviour of a silicon carbide fibre-reinforced glass ceramic matrix composite, SiC/1723, with a circular hole was investigated at room temperature. Two laminate lay-ups were studied: cross-ply, [0/90](2s), and unidirectional, [0](8). At first, the fatigue limit based on one million cycles was established for the tension-tension fatigue condition. Then, the fatigue response under fully reversed (tension-compression) cycling loading with a maximum stress equal to the tension-tension fatigue limit was investigated. This tension-compression loading resulted in an increased amount of damage and ultimately led to the specimen failure well before one million cycles. In the cross-ply laminate, the damage mechanisms in the 90 degrees plies involved transverse cracks only during tension-tension cycling, and transverse and longitudinal cracks during tension-compression cycling. In the unidirectional laminate, the longitudinal cracks which initiated at the hole periphery grew longer in tension-compression fatigue than in tension-tension fatigue. On the other hand, no damage and consequently no effect on fatigue life was observed during the compression-compression fatigue condition only. RP MALL, S (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 6 Z9 9 U1 0 U2 4 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0010-4361 J9 COMPOSITES JI Composites PD SEP PY 1995 VL 26 IS 9 BP 631 EP 636 DI 10.1016/0010-4361(95)98911-4 PG 6 WC Materials Science, Composites SC Materials Science GA RR454 UT WOS:A1995RR45400003 ER PT J AU KLEM, RB AF KLEM, RB TI WHOS SELLING SNAKE OIL SO DATAMATION LA English DT Letter RP KLEM, RB (reprint author), ITT FED SERV CORP,VANDENBERG AFB,CA 93437, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAHNERS-DENVER PUBLISHING CO PI HIGHLANDS RANCH PA 8773 S RIDGELINE BLVD, HIGHLANDS RANCH, CO 80126-2329 SN 0011-6963 J9 DATAMATION JI Datamation PD SEP 1 PY 1995 VL 41 IS 16 BP 9 EP 10 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA RT142 UT WOS:A1995RT14200006 ER PT J AU RIEGLER, JL LANG, KA JOHNSON, SP WESTERMAN, JH AF RIEGLER, JL LANG, KA JOHNSON, SP WESTERMAN, JH TI TRANSJUGULAR INTRAHEPATIC PORTOSYSTEMIC SHUNT IMPROVES OXYGENATION IN HEPATOPULMONARY SYNDROME SO GASTROENTEROLOGY LA English DT Note ID LIVER-TRANSPLANTATION; CIRRHOSIS; HYPOXEMIA; HYPERTENSION; ASCITES AB Hepatopulmonary syndrome is a complication of chronic liver disease in which arterial hypoxemia results from abnormalities in pulmonary blood flow. Severe hypoxemia can lead to clinical deterioration and death. Although the etiology is unknown, portal hypertension seems to be an important factor in the development of hepatopulmonary syndrome. No effective pharmacological therapy has been identified, but liver transplantation may be curative. Arterial hypoxemia may complicate transplant surgery, however, and resolution of the syndrome after liver transplantation is performed may be delayed. In addition, it seems that complete reversal of oxygenation abnormalities after liver transplantation is performed is unpredictable. We describe a patient with hepatopulmonary syndrome who noted improvement in symptoms of dyspnea after the placement of a transjugular intrahepatic portosystemic shunt. Arterial oxygenation and calculated shunt fraction improved significantly during the follow-up period, and liver transplantation was subsequently performed without difficulty. Portal decompression using transjugular intrahepatic portosystemic shunt may represent a palliative therapy for hepatopulmonary syndrome in patients awaiting liver transplantation. C1 WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT RADIOL,LACKLAND AFB,TX 78236. RP RIEGLER, JL (reprint author), WILFORD HALL USAF MED CTR,DEPT GASTROENTEROL,PSMG,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 30 TC 68 Z9 69 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0016-5085 J9 GASTROENTEROLOGY JI Gastroenterology PD SEP PY 1995 VL 109 IS 3 BP 978 EP 983 DI 10.1016/0016-5085(95)90409-3 PG 6 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA RT115 UT WOS:A1995RT11500037 PM 7657128 ER PT J AU Delucia, PR AF Delucia, PR TI Effects of pictorial relative size and ground-intercept information on judgments about potential collisions in perspective displays SO HUMAN FACTORS LA English DT Article ID TIME-TO-COLLISION; PERCEPTION; AVOIDANCE AB Using perspective displays, observers judged whether two objects that approached each other in midair would collide. When objects were different sizes, observers often did not detect imminent collisions. Errors decreased with equal-sized objects or ground-intercept information. Results from these limited conditions suggest that judgments about collision in perspective displays (e.g., three-dimensional displays of aircraft) can be enhanced by minimizing ambiguities created by pictorial relative size cues. Results are consistent with studies of judgments about object-self collisions. C1 USAF,ARMSTRONG LAB,WRIGHT PATTERSON AFB,OH. RP Delucia, PR (reprint author), TEXAS TECH UNIV,DEPT PSYCHOL,LUBBOCK,TX 79409, USA. NR 30 TC 15 Z9 15 U1 0 U2 0 PU HUMAN FACTORS SOC PI SANTA MONICA PA BOX 1369, SANTA MONICA, CA 90406 SN 0018-7208 J9 HUM FACTORS JI Hum. Factors PD SEP PY 1995 VL 37 IS 3 BP 528 EP 538 DI 10.1518/001872095779049318 PG 11 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA TN436 UT WOS:A1995TN43600005 ER PT J AU KINSELLA, ME VICEN, PM AF KINSELLA, ME VICEN, PM TI MILITARY PRODUCTS FROM COMMERCIAL LINES SO IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE LA English DT Article; Proceedings Paper CT NAECON 95 on Technology - The Solution CY MAY 22, 1995 CL DAYTON, OH AB ''Military Products From Commercial Lines'' is a pilot program within the Air Force Manufacturing Technology Directorate's Industrial Base Pilots Office. TRW's Avionics and Surveillance Group (ASG) is leading the program. This pilot program will demonstrate commercial-military integration by producing F-22 military avionics modules on an automotive electronics production line operated by TRW's Automotive Electronics Group (AEG). To accomplish this requires a redesign of the modules so that they are producible using commercial automotive electronics processes. Dual use manufacturing also dictates establishing compatible business practices, manufacturing infrastructures and process technologies. Business practices that must be changed involve accounting procedures, contracting requirements, audit requirements and quality control. Manufacturing infrastructure improvements include incorporation of advanced concurrent engineering tools and process control software to allow economic production of Small lot sizes. Process technology changes involve designing for production lines that are highly automated, and compatibility with commercial practices. C1 TRW CO INC,AVION & SURVEILLANCE GRP,REDONDO BEACH,CA 90278. RP KINSELLA, ME (reprint author), USAF,WRIGHT LAB,MFG TECHNOL DIRECTORATE,B653,2977 P ST,STE 6,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8985 J9 IEEE AERO EL SYS MAG JI IEEE Aerosp. Electron. Syst. Mag. PD SEP PY 1995 VL 10 IS 9 BP 7 EP 10 DI 10.1109/62.464895 PG 4 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA RV742 UT WOS:A1995RV74200007 ER PT J AU MEYERS, LR ROGERS, SK KABRISKY, M BURNS, TJ AF MEYERS, LR ROGERS, SK KABRISKY, M BURNS, TJ TI IMAGE PERCEPTION AND ENHANCEMENT FOR THE VISUALLY-IMPAIRED - USING WAVELET SIMULATION TO BOOST VISUAL INFORMATION SO IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE LA English DT Article RP MEYERS, LR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0739-5175 J9 IEEE ENG MED BIOL JI IEEE Eng. Med. Biol. Mag. PD SEP-OCT PY 1995 VL 14 IS 5 BP 594 EP 602 PG 9 WC Engineering, Biomedical; Medical Informatics SC Engineering; Medical Informatics GA RW954 UT WOS:A1995RW95400013 ER PT J AU TATE, RF HUNT, BS HELMS, CA TRUESDELL, KA HAGER, GD AF TATE, RF HUNT, BS HELMS, CA TRUESDELL, KA HAGER, GD TI SPATIAL GAIN MEASUREMENTS IN A CHEMICAL OXYGEN-IODINE LASER (COIL) SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article AB The spatial distribution of small signal gain has been investigated on the RADICL device, a supersonic chemical oxygen-iodine laser (COIL). A frequency-stabilized, narrow linewidth diode laser system operating on the F = 3 --> F = 4 hyperfine levels of the (P-2(1/2)) to (P-2(3/2)) spin-orbit transition in atomic iodine was used as a small signal probe. A peak gain of 1.2%/cm was measured along the horizontal centerline of the single-slit, supersonic nozzle, which is about two times greater than measurements made on ReCOIL by Hager ef at and compares favorably with measurements made on the RotoCOIL device by Keating st al. Gain distribution was investigated under three I-2 flow conditions. Scans across the supersonic expansion indicate a gradient in gain distribution due to higher gas temperatures along the walls and mixing phenomena. RP TATE, RF (reprint author), USAF,PHILLIPS LAB,LIDB,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 10 TC 62 Z9 66 U1 1 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD SEP PY 1995 VL 31 IS 9 BP 1632 EP 1636 DI 10.1109/3.406375 PG 5 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RQ559 UT WOS:A1995RQ55900007 ER PT J AU BERG, JM ADAMS, RJ MALAS, JC BANDA, SS AF BERG, JM ADAMS, RJ MALAS, JC BANDA, SS TI NONLINEAR OPTIMIZATION-BASED DESIGN OF RAM VELOCITY PROFILES FOR ISOTHERMAL FORGING SO IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY LA English DT Article ID MATERIAL BEHAVIOR; HOT DEFORMATION; STATE AB The development of good material models, accurate nonlinear finite element codes, and computer-controlled presses make practical the application of control techniques to metal forging. This paper considers the open-loop problem of selecting a nominal ram velocity profile to produce a desired microstructure, given a specified die and preform geometry and forging temperature. Two approaches for doing so are applied to a simple, but representative problem. The first is based on classical numerical optimization techniques. The second is based on inverse neural networks and offers potential savings in critical computations. Simulation studies for the two methods show good results. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP BERG, JM (reprint author), USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 30 TC 3 Z9 3 U1 1 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1063-6536 J9 IEEE T CONTR SYST T JI IEEE Trans. Control Syst. Technol. PD SEP PY 1995 VL 3 IS 3 BP 269 EP 278 DI 10.1109/87.406974 PG 10 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA RR789 UT WOS:A1995RR78900002 ER PT J AU YEN, GG AF YEN, GG TI EIGENSTRUCTURE BIDIRECTIONAL ASSOCIATIVE MEMORY - AN EFFECTIVE SYNTHESIS PROCEDURE SO IEEE TRANSACTIONS ON NEURAL NETWORKS LA English DT Letter ID FORGETTING ALGORITHM AB In the present letter we propose a computationally efficient synthesis procedure for a class of bidirectional associative memories. Networks are described by a system of first-order ordinary difference equations which are defined on a closed hypercube of the state-space with solutions extended to the corner of the hypercube. The proposed algorithm possesses several advantages, since it is possible to exert control over the number of spurious states, since it is possible to estimate the basins of attraction of the stable memories, and since it is possible, under certain constraints, to effectively store a number of desired stable memories which by far exceed the order of the network. The applicability of the present results is demonstrated by means of a specific application in reconfigurable control of flexible structures. RP YEN, GG (reprint author), USAF,PHILLIPS LAB,DIV STRUCT & CONTROLS,KIRTLAND AFB,NM 87117, USA. NR 16 TC 2 Z9 3 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1045-9227 J9 IEEE T NEURAL NETWOR JI IEEE Trans. Neural Netw. PD SEP PY 1995 VL 6 IS 5 BP 1293 EP 1297 DI 10.1109/72.410378 PG 5 WC Computer Science, Artificial Intelligence; Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA RT523 UT WOS:A1995RT52300030 PM 18263422 ER PT J AU VISBAL, MR GORDNIER, RE AF VISBAL, MR GORDNIER, RE TI PITCH RATE AND PITCH-AXIS LOCATION EFFECTS ON VORTEX BREAKDOWN ONSET SO JOURNAL OF AIRCRAFT LA English DT Article AB Computational results are presented for the onset of vortex breakdown above a 75-deg sweep delta wing subject to a ramp-type pitch maneuver to high angle of attack. The flows are simulated by solving the full three-dimensional unsteady Navier-Stokes equations on a moving grid using the implicit Beam-Warming algorithm. An assessment of the effects of numerical resolution, and comparison with experiment are employed to validate the computational approach. The effects of pitch rate and pitch-axis location are examined. For a range of these parameters, it is found that either increasing pitch rate or moving the axis downstream results in a larger angular delay of vortex bursting. These effects are correlated with the motion-induced effective incidence along the wing. For fixed pitch rate, the change in pivot location is equivalent to a shift in time without significant alteration of the flow structure. RP VISBAL, MR (reprint author), USAF,WRIGHT LAB,DIV AEROMECH,CFD,RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 5 Z9 5 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD SEP-OCT PY 1995 VL 32 IS 5 BP 929 EP 935 DI 10.2514/3.46820 PG 7 WC Engineering, Aerospace SC Engineering GA RY916 UT WOS:A1995RY91600004 ER PT J AU VISBAL, MR GORDNIER, RE AF VISBAL, MR GORDNIER, RE TI COMPRESSIBILITY EFFECTS ON VORTEX BREAKDOWN ONSET ABOVE A 75-DEGREE SWEEP DELTA-WING SO JOURNAL OF AIRCRAFT LA English DT Article AB The effects of compressibility on the onset of vortex breakdown above a 75-deg sweep delta wing were explored numerically for both static and pitching conditions. The flows were simulated by solving the mass-averaged, three-dimensional, unsteady Navier-Stokes equations using an implicit, time-accurate Beam-Warming algorithm and the algebraic Baldwin-Lomax turbulence model. Static computations were performed over the freestream Mach number range 0.2 less than or equal to M(x) less than or equal to 0.95 and for a chord Reynolds number Re-C = 2 x 10(6). Compressibility was found to have a pronounced effect on the flow structure for static conditions. The formation of several shocks and an embedded supersonic region in the vortex core (for M(x) as low as 0.4) were encountered prior to the onset of vortex breakdown. Despite these drastic changes in the now structure, the quasistatic breakdown onset angle varied only slightly. Compressibility effects on the transient onset of vortex breakdown were also investigated for a ramp-type pitch maneuver to high angle of attack with 0.2 less than or equal to M(x) less than or equal to 0.6. Under dynamic conditions increasing M(x) resulted in a larger delay of breakdown and in the formation of a complex, three-dimensional shock structure at M(x) = 0.6. Compressibility effects were found to be similar when comparing the results from laminar and turbulent pitching calculations, indicating that these effects are to a great extent inviscid in nature. RP VISBAL, MR (reprint author), USAF,WRIGHT LAB,DIV AEROMECH,CFD,RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 9 Z9 10 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD SEP-OCT PY 1995 VL 32 IS 5 BP 936 EP 942 DI 10.2514/3.46821 PG 7 WC Engineering, Aerospace SC Engineering GA RY916 UT WOS:A1995RY91600005 ER PT J AU STEPHEN, EJ AF STEPHEN, EJ TI ANALYSIS OF ROLLED DELTA-WING FLOWS USING EFFECTIVE SWEEP AND ATTACK ANGLES SO JOURNAL OF AIRCRAFT LA English DT Article AB Flow visualization data over the suction surface of a 65-deg swept delta wing were recorded at a 30-deg incidence angle for a range of static roll angles (-42 to 42 deg) and Reynolds number of 9.0 x 10(5). The data were reduced to provide information on the vortex relative position and the burst point location. The results were compared to previously recorded rolling moment data, to provide an understanding of the relationship between now behavior and aerodynamic loading. The combination of roll about the body axis and an axis incidence angle with the flow induced a sideslip angle relative to the wing. Combining the sideslip angle with the nominal leading-edge sweep of the wing provided an effective leading-edge sweep angle. Using the effective sweep angle, along with the previous data for unyawed delta wings, the now behavior over either side of the wing was predicted. Extending this analysis suggested the presence of nonzero trim positions in roll, based on wing movement in and out of a stalled regime. These trim positions have been recorded in free-to-roll experiments. RP STEPHEN, EJ (reprint author), USAF ACAD,FRANK J SEILER RES LAB,2354 VANDENBURG DR,SUITE 6H79,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 5 Z9 5 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD SEP-OCT PY 1995 VL 32 IS 5 BP 978 EP 984 DI 10.2514/3.46826 PG 7 WC Engineering, Aerospace SC Engineering GA RY916 UT WOS:A1995RY91600010 ER PT J AU VISBAL, MR GORDNIER, RE AF VISBAL, MR GORDNIER, RE TI ORIGIN OF COMPUTED UNSTEADINESS IN THE SHEAR-LAYER OF DELTA-WINGS SO JOURNAL OF AIRCRAFT LA English DT Note RP VISBAL, MR (reprint author), USAF,WRIGHT LAB,DIV AEROMECH,CFD RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 17 Z9 17 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD SEP-OCT PY 1995 VL 32 IS 5 BP 1146 EP 1148 DI 10.2514/3.46850 PG 3 WC Engineering, Aerospace SC Engineering GA RY916 UT WOS:A1995RY91600034 ER PT J AU MUNICHANDRAIAH, N SCANLON, LG MARSH, RA KUMAR, B SIRCAR, AK AF MUNICHANDRAIAH, N SCANLON, LG MARSH, RA KUMAR, B SIRCAR, AK TI INFLUENCE OF ZEOLITE ON ELECTROCHEMICAL AND PHYSICOCHEMICAL PROPERTIES OF POLYETHYLENE OXIDE SOLID-ELECTROLYTE SO JOURNAL OF APPLIED ELECTROCHEMISTRY LA English DT Article ID ALKALI-METAL SALTS; POLYMER ELECTROLYTES; CONDUCTIVITY; BATTERY; BLENDS AB A composite polymer electrolyte of polyethyleneoxide-LiBF4 containing fine particles of zeolite was studied using electrochemical impedance spectroscopy, cyclic voltammetry, differential scanning calorimetry, infrared spectroscopy and scanning electron microscopy. When compared with the polymer electrolyte without zeolite, the specific conductivity of the composite electrolyte film is higher by about two orders of magnitude at room temperature. The increase in specific conductivity is explained as due to increased amorphocity which is reflected in the thermal studies. The nature of the cyclic voltammograms and infrared spectra is discussed. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP MUNICHANDRAIAH, N (reprint author), USAF,WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,BATTERY ELECTROCHEM SECT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 51 Z9 53 U1 2 U2 8 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0021-891X J9 J APPL ELECTROCHEM JI J. Appl. Electrochem. PD SEP PY 1995 VL 25 IS 9 BP 857 EP 863 DI 10.1007/BF00772205 PG 7 WC Electrochemistry SC Electrochemistry GA RU783 UT WOS:A1995RU78300008 ER PT J AU Milligan, KB Kinra, VK AF Milligan, KB Kinra, VK TI A numerical investigation of the elastothermodynamic damping of fiber-reinforced metal-matrix composites SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME LA English DT Article C1 CTR MECH COMPOSITES,COLLEGE STN,TX 77843. DEPT AEROSP ENGN,COLLEGE STN,TX 77843. RP Milligan, KB (reprint author), USAF,WRIGHT LAB,ARMAMENT DIRECTORATE,EGLIN AFB,FL 32542, USA. NR 5 TC 3 Z9 3 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0021-8936 J9 J APPL MECH-T ASME JI J. Appl. Mech.-Trans. ASME PD SEP PY 1995 VL 62 IS 3 BP 816 EP 818 DI 10.1115/1.2897020 PG 3 WC Mechanics SC Mechanics GA TT898 UT WOS:A1995TT89800042 ER PT J AU JENNY, JR SKOWRONSKI, M MITCHEL, WC HOBGOOD, HM GLASS, RC AUGUSTINE, G HOPKINS, RH AF JENNY, JR SKOWRONSKI, M MITCHEL, WC HOBGOOD, HM GLASS, RC AUGUSTINE, G HOPKINS, RH TI VANADIUM RELATED NEAR-BAND-EDGE ABSORPTION-BANDS IN 3 SIC POLYTYPES SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID DEEP-LEVEL IMPURITIES; MAGNETIC CIRCULAR-DICHROISM; ELECTRON-SPIN-RESONANCE; CARBIDE; TI AB Low-temperature optical absorption experiments have been performed on a variety of n-type, p-type, and high-resistivity silicon carbide samples, including the polytypes: 4H, 6H, and 15R. These experiments reveal a set of absorption band close to the band edge with a fine structure depending upon the polytype. Each sample exhibits a spectrum with the number of lines corresponding to the number of inequivalent substitutional lattice sites contained in the polytype. A correlation of these lines with the neutral vanadium (2)E-->T-2(2) intracenter transition indicates that the initial state for the near-band-gap absorption lines is the (2)E State of the 3d(1) configuration of vanadium. The near-band-edge absorption Tines were interpreted as due to an exciton bound to a vanadium donor with an electron occupying an atomic-like d state. The position of the vanadium acceptor level was estimated to be, at most, 250 meV from the conduction band for the cubic site in 6H SiC. (C) 1995 American Institute of Physics. C1 USAF,WRIGHT LABS,MAT LAB,WLMLPO,WRIGHT PATTERSON AFB,OH 45433. WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235. RP JENNY, JR (reprint author), CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213, USA. RI Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 21 TC 8 Z9 8 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD SEP 1 PY 1995 VL 78 IS 5 BP 3160 EP 3163 DI 10.1063/1.360004 PG 4 WC Physics, Applied SC Physics GA RR845 UT WOS:A1995RR84500042 ER PT J AU Gannon, RL Rea, MA AF Gannon, RL Rea, MA TI Twelve-hour phase shifts of hamster circadian rhythms elicited by voluntary wheel running SO JOURNAL OF BIOLOGICAL RHYTHMS LA English DT Article DE nonphotic; activity; biological rhythms; motivation ID SYRIAN-HAMSTERS; SUPRACHIASMATIC NUCLEUS; RETINOHYPOTHALAMIC PROJECTION; ASCENDING PROJECTIONS; GOLDEN-HAMSTER; RE-ENTRAINMENT; DARK PULSES; LIGHT; RAT; EXERCISE AB Running in a novel wheel can serve as a nonphotic zeitgeber to entrain or phase shift circadian rhythms in hamsters. In this study, hamsters were entrained to a Light:dark schedule of 14:10 h but had no access to running wheels. At four different phase points of the Light cycle, hamsters were transferred to constant darkness and provided with running wheels. All hamsters began running shortly after transfer and were allowed to continue running at their own volition. Approximately 20% of the hamsters transferred at zeitgeber time (ZT) 23 (ZT 12 = lights out) ran more than 4 h after transfer and showed phase advances of the circadian activity rhythm by as much as 15 h, while hamsters that ran less than 4 h on average did not phase shift. A similar result was observed for hamsters transferred at ZT 2. Hamsters transferred at ZT 5 and 8 also did not phase shift if they ran less than 4 h, although the relation between longer runs and phase shifts became less evident. A sustained run in excess of 4 h appeared to be associated with large phase advances. These results show that under certain conditions, a single sustained bout of wheel-running activity is capable of phase shifting the circadian pacemaker by more than 12 h. C1 ARMSTRONG LAB,BIOL RHYTHMS & INTEGRAT NEUROSCI RES INST,BROOKS AFB,TX 78235. NR 23 TC 33 Z9 33 U1 0 U2 1 PU SAGE SCIENCE PRESS PI THOUSAND OAKS PA 2455 TELLER RD, THOUSAND OAKS, CA 91320 SN 0748-7304 J9 J BIOL RHYTHM JI J. Biol. Rhythms PD SEP PY 1995 VL 10 IS 3 BP 196 EP 210 DI 10.1177/074873049501000303 PG 15 WC Biology; Physiology SC Life Sciences & Biomedicine - Other Topics; Physiology GA TQ005 UT WOS:A1995TQ00500003 PM 7488758 ER PT J AU Jones, NF Holden, MS AF Jones, NF Holden, MS TI Mental health treatment and medical utilization: First pilot study in the military SO JOURNAL OF CLINICAL PSYCHOLOGY IN MEDICAL SETTINGS LA English DT Article DE health psychology; medical cost offset; military psychology; healthcare finance ID SYMPTOMS; THERAPY; CARE AB Savings in medical utilization, as a function of psychotherapeutic intervention, which has been widely demonstrated elsewhere, can be replicated in military medical settings. Results point not only to decreased medical utilization following mental health intervention, but also to more appropriate treatment. C1 USAF,MED GRP 48,ROYAL AF LAKENHEA,SUFFOLK,ENGLAND. NR 14 TC 3 Z9 3 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 1068-9583 J9 J CLIN PSYCHOL MED S JI J. Clin. Psychol. Med. Settings PD SEP PY 1995 VL 2 IS 3 BP 269 EP 274 DI 10.1007/BF01990881 PG 6 WC Psychology, Clinical SC Psychology GA TM808 UT WOS:A1995TM80800004 PM 24226197 ER PT J AU BEUTIER, T BOSCHER, D FRANCE, M AF BEUTIER, T BOSCHER, D FRANCE, M TI SALAMMBO - A 3-DIMENSIONAL SIMULATION OF THE PROTON RADIATION BELT SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID EQUILIBRIUM STRUCTURE; TRANSPORT; DIFFUSION AB Using diffusion theory, we give the first results for a three-dimensional model of the proton radiation belt. This is based on the numerical solution of a diffusion equation which takes into account the cosmic ray albedo neutron decay source, deceleration of protons by the free and bounded electrons of the medium, the charge exchange loss process, and radial diffusion by magnetic and electric field perturbations. This model used in static conditions gives results which are in a good agreement with those of NASA's APS model. However, a better knowledge of thermospheric densities, radial diffusion, and improved measurements of proton flux near synchronous orbit altitudes may be necessary to improve future model results. We prove that an external boundary condition, which plays the part of an injection source, is essential to radiation belt existence and explains the effect of solar activity and magnetotail dynamics on radiation belt dynamics. C1 CTR ETUD & RECH TOULOUSE,OFF NATL ETUD & RECH AEROSP,DEPT TECHNOL SPATIALE,F-31055 TOULOUSE,FRANCE. USAF,COLL AIR COMMAND & STAFF,MAXWELL AFB,AL 36112. RP BEUTIER, T (reprint author), UPS,CNRS,CTR ETUD SPATIALE RAYONNEMENTS,9 AVE COLONEL ROCHE,F-31400 TOULOUSE,FRANCE. NR 20 TC 30 Z9 30 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD SEP 1 PY 1995 VL 100 IS A9 BP 17181 EP 17188 DI 10.1029/94JA02728 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RT743 UT WOS:A1995RT74300022 ER PT J AU WIESEL, WE AF WIESEL, WE TI OPTIMAL POLE-PLACEMENT IN TIME-DEPENDENT LINEAR-SYSTEMS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB In this paper a problem of optimal modal control for general linear, time-dependent systems is posed and solved. We review the recent modal decomposition of the general linear system. We then pose the problem of controlling one unstable mode, with a specified new Lyapunov exponent, but minimizing the mean-square gain function, The method is applied to the shallow-angle re-entry of a Delta Clipper-like vehicle, and the modal decomposition leads to both stability information and characterization of how the trajectory is unstable. The unstable Lyapunov exponent is moved so that the trajectory is stable, as verified by closed-loop Lyapunov exponent analysis. When implemented within the original nonlinear system, the controller can handle initial errors at the kilometer level. Only 4% modulation of the original drag factor is required for control. RP WIESEL, WE (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 5 TC 5 Z9 5 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1995 VL 18 IS 5 BP 995 EP 999 DI 10.2514/3.21496 PG 5 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RZ381 UT WOS:A1995RZ38100009 ER PT J AU PACHTER, M CHANDLER, PR MEARS, M AF PACHTER, M CHANDLER, PR MEARS, M TI RECONFIGURABLE TRACKING CONTROL WITH SATURATION SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB On-line system identification and on-line optimization is used to maximize aircraft tracking performance before and after control surface failure, yet prevent instability and departure. The on-line optimization consists of receding horizon/model predictive optimal control with one step ahead actuator rate constraint enforcement. Such hard constraint enforcement is rigorous through use of a linear programming algorithm to include rate saturation in the design. The paper demonstrates that the full, infinity norm solution with one-step-ahead constraint enforcement is equivalent to a simple one-dimensional optimization whose solution is attainable in closed form. This equivalence allows for an efficient on-line implementation of reconfigurable control with hard actuator rate constraints. Good tracking performance after severe failure is demonstrated in realistic simulations. C1 USAF,WRIGHT LAB,DIV FLIGHT CONTROL,WRIGHT PATTERSON AFB,OH 45433. RP PACHTER, M (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 34 Z9 35 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1995 VL 18 IS 5 BP 1016 EP 1022 DI 10.2514/3.21499 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RZ381 UT WOS:A1995RZ38100012 ER PT J AU TITUS, NA AF TITUS, NA TI OPTIMAL STATION-CHANGE MANEUVER FOR GEOSTATIONARY SATELLITES USING CONSTANT LOW THRUST SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB An electric propulsion system supplying constant low thrust can perform station change maneuvers for geostationary orbits with significantly lower fuel costs than conventional propulsion systems. Using traditional optimal-control techniques, this paper develops a thrust-angle profile that improves upon the tangential-thrust profile originally suggested by Edelbaum for this problem. The optimal-control method ensures that the final orbit has zero eccentricity while achieving a rate of relocation that is essentially identical to the rate achieved by the tangential-thrust method. This reduction in eccentricity eliminates daily oscillations in the station of the relocated satellite. The proposed method generates the optimal control profile using a spherical gravitational model with constant thrust and constant mass flow rate to describe the dynamics during the transfer. Simulations show that the eccentricity buildup depends on the level of acceleration, and that it can be reduced by up to three orders in magnitude using one common electric propulsion system. A comparison of station-change maneuvers using electric propulsion systems versus conventional chemical propulsion systems is included to emphasize the stationing flexibility that would be available to communications satellites using an electric propulsion system. RP TITUS, NA (reprint author), USAF,PHILLIPS LAB,DIV SPACE & MISSILES DYNAM,PL VTA,KIRTLAND AFB,NM 87117, USA. NR 11 TC 8 Z9 8 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1995 VL 18 IS 5 BP 1151 EP 1155 DI 10.2514/3.21518 PG 5 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RZ381 UT WOS:A1995RZ38100031 ER PT J AU HALL, CD AF HALL, CD TI SPINUP DYNAMICS OF GYROSTATS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID SPACECRAFT; RECOVERY AB Attention is given to the spinup dynamics of gyrostats containing a single axisymmetric rotor. Spinup of the rotor is due to a small constant torque applied by a motor on the platform. The dynamics are described by four first-order differential equations, which are put into noncanonical Hamiltonian form. Using conservation of angular momentum and the method of averaging, the equations of motion are reduced to a single scalar first-order equation for the slow evolution of the Hamiltonian. This reduction is formally valid for small spinup torques and in regions of phase space where the unperturbed motion is periodic. The unperturbed separatrices are therefore regions where averaging fails to describe the motion adequately and are also indicative of dramatic changes in the attitude dynamics. Exact solutions to the averaged equation are used to justify further the projection of solutions of the four-dimensional system onto the plane of the slow states. The reduced two-dimensional slow state space is used to construct a single planar diagram that is useful for portraying spinup dynamics. RP HALL, CD (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 35 TC 30 Z9 32 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD SEP-OCT PY 1995 VL 18 IS 5 BP 1177 EP 1183 DI 10.2514/3.21522 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA RZ381 UT WOS:A1995RZ38100035 ER PT J AU RUSNAK, JM AF RUSNAK, JM TI FALSE-POSITIVE RAPID PLASMA REAGIN TESTS AND ANTICARDIOLIPIN ANTIBODIES - REPLY SO JOURNAL OF INFECTIOUS DISEASES LA English DT Letter RP RUSNAK, JM (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS & CLIN INVEST FACIL,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD SEP PY 1995 VL 172 IS 3 BP 906 EP 906 PG 1 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RR073 UT WOS:A1995RR07300053 ER PT J AU BALL, JK JONES, JD AF BALL, JK JONES, JD TI A COMPARISON OF SHAPED PIEZOELECTRIC ACTUATORS FOR DIVERGENCE CONTROL SO JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES LA English DT Article AB The characteristics and effectiveness of shaped piezo-actuators for use in controlling the divergence of a simplified forward swept wing model are analytically investigated. The forward swept wing is modeled as a simplified cantilever beam with surface mounted piezo-actuators on the upper surface of the beam. A constant electric field is applied to the actuator inducing a constant external force on the wing, and the effects of actuator location, size, thickness, and shape are evaluated using the principle of virtual work by maximizing the modal amplitude of the first bending mode. For control purposes, strain at the wing root is used as an error signal to minimize the beam deflection. Results suggest that the optimum actuator size should span the entire wing. The required actuator thickness for divergence control decreases with increasing airspeed due to the effectiveness softening of the wing in the presence of air loads. A uniform rectangular actuator is more effective for controlling divergence; however, a linearly shaped actutor is more efficient from the standpoint of control effectiveness per actuator weight. Application is currently limited by the large thicknesses and applied voltages required by the actuators to achieve effective divergence control. However, this investigation suggests that, because of the softening of the wing near divergence, only a small control effort is required to deform the wing thus allowing the airstream to act as the power source for control actuation. C1 PURDUE UNIV, SCH MECH ENGN, W LAFAYETTE, IN 47907 USA. RP BALL, JK (reprint author), USAF ACAD, DEPT MECH ENGN, 2354 FAIRCHILD DR, SUITE 6H2, COLORADO SPRINGS, CO 80840 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 1045-389X J9 J INTEL MAT SYST STR JI J. Intell. Mater. Syst. Struct. PD SEP PY 1995 VL 6 IS 5 BP 598 EP 609 DI 10.1177/1045389X9500600502 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA TA102 UT WOS:A1995TA10200002 ER PT J AU SELCO, JI CARRICK, PG AF SELCO, JI CARRICK, PG TI JET-COOLED EMISSION-SPECTRA OF THE XYLENES SO JOURNAL OF MOLECULAR SPECTROSCOPY LA English DT Article ID CONTROLLED ELECTRON-IMPACT; AROMATIC-MOLECULES; P-XYLENE; TOLUENE; FLUORESCENCE; CONFORMATION; ROTATION; BENZENE; STATES AB Jet-cooled electronic emission spectra from ortho-, meta-, and para-xylenes have been recorded using a corona excited supersonic expansion apparatus. A full vibronic analysis of the S-1 --> S-0 transition for all three isomers has been carried out allowing for unambiguous assignments of the gas-phase ground state vibrational frequencies. For modes showing progressions [mode numbering according to Green and Wilson: 8 (18b), and 9 (1) in ortho-. 8 (1), 9 (12), and 10 (6a) in meta-; and 3 (7a), 5 (1), and 14 (6b) in para-xylene], anharmonicity constants are calculated and reported. (C) 1995 Academic Press, Inc. C1 USAF,PHILLIPS LAB,RKFE,EDWARDS AFB,CA 93524. RP SELCO, JI (reprint author), UNIV REDLANDS,DEPT CHEM,BOX 3080,REDLANDS,CA 92373, USA. NR 37 TC 23 Z9 23 U1 3 U2 12 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-2852 J9 J MOL SPECTROSC JI J. Mol. Spectrosc. PD SEP PY 1995 VL 173 IS 1 BP 262 EP 276 DI 10.1006/jmsp.1995.1232 PG 15 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA RU652 UT WOS:A1995RU65200022 ER PT J AU SELCO, JI CARRICK, PG AF SELCO, JI CARRICK, PG TI JET-COOLED EMISSION-SPECTRA OF THE XYLYL RADICALS SO JOURNAL OF MOLECULAR SPECTROSCOPY LA English DT Article ID SUBSTITUTED BENZYL RADICALS; METHYLBENZYL RADICALS; SUPERSONIC EXPANSION; EXCITATION-SPECTRA; P-METHYLBENZYL; FLUORESCENCE AB Jet-cooled electronic emission spectra from ortho-, meta-, and para-xylyl (methylbenzyl) radicals have been recorded with a corona excited supersonic expansion (CESE) apparatus. A full vibronic analysis of the D-1 --> D-0 transitions for all three isomers has been carried out, allowing for unambiguous assignments of the gas-phase ground state vibrational frequencies. For modes exhibiting progressions (numbering according to Green and Wilson) (11 (18a), 29 (6b), 10 (6a), 9 (1), 25 (3) and 5 (14) in ortho-xylyl; 10 (6b) in meta-xylyl; and 5 (1), 6 (6a), 3 (7a), and 17 (10a) in para-xylyl), anharmonicity constants are calculated and reported. Although CESE excitation of the xylenes (used in this study as precursors) did not result in the interconversion of isomers, it does occur along with homolytic methyl C-H bond dissociation during the formation of the radicals. (C) 1995 Academic Press, Inc. C1 USAF,PHILLIPS LAB,RKFE,EDWARDS AFB,CA 93524. RP SELCO, JI (reprint author), UNIV REDLANDS,DEPT CHEM,BOX 3080,REDLANDS,CA 92373, USA. NR 41 TC 56 Z9 56 U1 2 U2 5 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-2852 J9 J MOL SPECTROSC JI J. Mol. Spectrosc. PD SEP PY 1995 VL 173 IS 1 BP 277 EP 295 DI 10.1006/jmsp.1995.1233 PG 19 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA RU652 UT WOS:A1995RU65200023 ER PT J AU LEASURE, R MCKENNEY, LAH MERRILL, A AF LEASURE, R MCKENNEY, LAH MERRILL, A TI FACTORS INFLUENCING BACCALAUREATE NURSING-STUDENTS ATTITUDES TOWARDS PERSONS LIVING WITH AIDS SO JOURNAL OF PROFESSIONAL NURSING LA English DT Article DE STIGMA; AIDS ATTITUDES, BACCALAUREATE STUDENTS ID NURSES AB Using stigma theory described by Goffman (1963), a descriptive correlational study was conducted to identify factors that influence nursing students' attitudes toward persons living with AIDS (PLWAs). Two hundred ten baccalaureate nursing students completed a three-part questionnaire consisting of a demographic data sheet, AIDS Knowledge Scale (AKS), and AIDS Attitude Scale (AAS). The AKS, 15 true/false questions, covered general aspects of AIDS knowledge. Attitudes toward PLWAs were assessed using the AAS, a series of five vignettes each followed by a le-item Likert scale. Stepwise multiple regression indicated that student status, AIDS knowledge, ideology, ethnicity, and age influenced nursing students' attitudes toward PLWA. Variables that did not enter the regression equation were years of work experience, gender, religion, type of significant interaction with PLWAs, and heart-changing experiences. Students who demonstrated the most stigmatizing attitudes were conservative, had more nursing education, less AIDS knowledge, or were noncaucasian. (C) 1995 by W.B. Saunders Company C1 USAF,DOVER AFB,DE. RP LEASURE, R (reprint author), UNIV OKLAHOMA,COLL NURSING,POB 26901,OKLAHOMA CITY,OK 73190, USA. NR 23 TC 8 Z9 9 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 8755-7223 J9 J PROF NURS JI J. Prof. Nurs. PD SEP-OCT PY 1995 VL 11 IS 5 BP 299 EP 305 DI 10.1016/S8755-7223(05)80011-0 PG 7 WC Nursing SC Nursing GA RU658 UT WOS:A1995RU65800011 PM 7593974 ER PT J AU HOYING, DA AF HOYING, DA TI STALL INCEPTION IN A MULTISTAGE HIGH-SPEED AXIAL COMPRESSOR SO JOURNAL OF PROPULSION AND POWER LA English DT Article; Proceedings Paper CT AIAA/SAE/ASME/ASEE 29th Joint Propulsion Conference and Exhibition CY JUN 28-30, 1993 CL MONTEREY, CA SP Amer Inst Aeronaut & Astronaut, Soc Automot Engineers, Amer Soc Mech Engineers, Amer Soc Engn Educ AB A comprehensive study has been conducted into the inception of stall in a multistage high-speed axial flow compressor. The compressor tested was a highly loaded, four-stage axial compressor representing the state of the art in current design technology. Data were taken at a variety of speeds, both with and without inlet distortion. High-frequency response pressure measurements were made on three of the four stages. The data were spatially Fourier analyzed for the existence of pressure waves traveling about the annulus of the compressor prior to stall. In addition, system identification methods were used to estimate the frequency and stability of such waves. In this test, these waves were found at nearly all conditions tested. However, the duration of the waves prior to stall differed markedly as a function of the speed of the compressor. The system identification results showed that the stability of these waves approached zero as the compressor was stalled. RP HOYING, DA (reprint author), USAF,WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD SEP-OCT PY 1995 VL 11 IS 5 BP 915 EP 922 DI 10.2514/3.23917 PG 8 WC Engineering, Aerospace SC Engineering GA RU824 UT WOS:A1995RU82400005 ER PT J AU FREW, D GALASSI, L STAVA, D AZEVEDO, D AF FREW, D GALASSI, L STAVA, D AZEVEDO, D TI INFLUENCE OF BOUNDARY-LAYER-TRANSITION ON MEASURED INCIPIENT SEPARATION ANGLES SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID TURBULENT AB The results of an investigation of shock-wave/turbulent boundary-layer interaction at nominal freestream Mach numbers between 5 and 6 are presented. This study examined the influence of boundary-layer transition on the two-dimensional incipient separation limit. The proximity of an externally generated shock/boundary-layer interaction to the end of flat-plate boundary-layer transition (defined as the peak heating location) was observed to have a first-order influence of the incipient separation angle. The interaction region needs to be located at least 50 boundary-layer thicknesses downstream of the peak heating location to avoid this influence. This finding is consistent with earlier reports found in the literature. C1 PRATT & WHITNEY UNITED TECHNOL,HYPERSON & INTEGRAT,W PALM BEACH,FL 33410. USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 18 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD SEP-OCT PY 1995 VL 11 IS 5 BP 938 EP 942 PG 5 WC Engineering, Aerospace SC Engineering GA RU824 UT WOS:A1995RU82400008 ER PT J AU GRUBER, MR NEJAD, AS AF GRUBER, MR NEJAD, AS TI NEW SUPERSONIC COMBUSTION RESEARCH FACILITY SO JOURNAL OF PROPULSION AND POWER LA English DT Note RP GRUBER, MR (reprint author), USAF,WRIGHT LAB,DIV ADV PROPULS,EXPTL RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 36 Z9 37 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD SEP-OCT PY 1995 VL 11 IS 5 BP 1080 EP 1083 DI 10.2514/3.23940 PG 4 WC Engineering, Aerospace SC Engineering GA RU824 UT WOS:A1995RU82400029 ER PT J AU CHAU, VB SAUNDERS, TR PIMSLER, M ELFRING, DR AF CHAU, VB SAUNDERS, TR PIMSLER, M ELFRING, DR TI IN-DEPTH DISINFECTION OF ACRYLIC RESINS SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID INFECTION CONTROL AB This study demonstrated that bacteria penetrate three kinds of dental acrylic resin after a short time period. Samples of acrylic resin were contaminated with a variety of bacteria and were then placed in three different disinfecting solutions as directed by the manufacturers. After the specific dilution and immersion time, cultures were made from the resin samples. The only effective disinfectant was a 0.525% solution of sodium hypochlorite at a 10-minute immersion, It disinfected not only the surfaces but also the bacteria that penetrated the surfaces to a depth of 3 mm. C1 USAF,DENT CORPS,TRAVIS AFB,CA 94535. USAF,DENT SERV,TRAVIS AFB,CA 94535. USAF,BIOMED SCI CORPS,TRAVIS AFB,CA 94535. USAF,ANALYT RES LAB,TRAVIS AFB,CA 94535. USAF,DENT LAB,TRAVIS AFB,CA 94535. NR 15 TC 38 Z9 42 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD SEP PY 1995 VL 74 IS 3 BP 309 EP 313 DI 10.1016/S0022-3913(05)80140-4 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RR243 UT WOS:A1995RR24300015 PM 7473287 ER PT J AU NATHAN, L SATIN, AJ TWICKLER, DM AF NATHAN, L SATIN, AJ TWICKLER, DM TI CEREBELLAR HEMANGIOBLASTOMA COMPLICATING PREGNANCY - A CASE-REPORT SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Note DE CEREBELLAR NEOPLASMS; PREGNANCY COMPLICATIONS, NEOPLASTIC; MAGNETIC RESONANCE IMAGING ID FOSSA AB BACKGROUND: Cerebellar hemangioblastomas are unusual benign neoplasms that may go undetected for years. When associated with pregnancy, however, these tumors may undergo rapid expansion and promote progression of symptomatology. CASE: A 28-year-old woman with ataxia and left-sided weakness was diagnosed with cerebellar hemangioblastoma in the second trimester of pregnancy following repeated hospital admissions for nausea and vomiting. Surgical removal was uneventful, and she delivered vaginally at term. CONCLUSION: Cerebellar hemangioblastomas, although rare, should be considered in the differential diagnosis of persistent nausea and vomiting when accompanied by an abnormal neurologic examination. C1 UNIV TEXAS,SW MED CTR,DEPT OBSTET & GYNECOL,DALLAS,TX 75235. UNIV TEXAS,SW MED CTR,DEPT RADIOL,DALLAS,TX 75235. WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,SAN ANTONIO,TX. NR 6 TC 13 Z9 13 U1 0 U2 0 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD SEP PY 1995 VL 40 IS 9 BP 662 EP 664 PG 3 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA RV578 UT WOS:A1995RV57800013 PM 8576886 ER PT J AU LIN, XW LAMPERT, WV HAAS, TW HOLLOWAY, PH LILIENTALWEBER, Z SWIDER, W WASHBURN, J AF LIN, XW LAMPERT, WV HAAS, TW HOLLOWAY, PH LILIENTALWEBER, Z SWIDER, W WASHBURN, J TI METALLURGY OF AL-NI-GE OHMIC CONTACT FORMATION ON N-GAAS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article ID SOLID-PHASE EPITAXY; COMPOUND SEMICONDUCTORS; 1ST PHASE; NUCLEATION; SYSTEM; MICROSTRUCTURE; INTERDIFFUSION; INTERFACES; GROWTH AB Al-Ni-Ge ohmic contacts on n-GaAs were prepared by sequential vapor deposition and furnace annealing at 500 degrees C. The metallurgical properties of the contacts were studied by transmission electron microscopy. It was found that while Al-Ni-Ge as a whole is relatively stable against GaAs, extensive interfacial reactions readily occur within the contact layers, resulting in a very stable layered structure of the type Al3Ni/Ni-Ge/GaAs, with epsilon'-Ni5Ge3 being the major phase in the Ni-Ge layer. GaAs twins and Ni-As precipitates were found in a thin layer immediately below the metallization, suggesting that the ohmic behavior can be accounted for in terms of a GaAs regrowth mechanism. (C) 1995 American Vacuum Society. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIV FLORIDA,DEPT MAT SCI & ENGN,GAINESVILLE,FL 32611. RP LIN, XW (reprint author), UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720, USA. RI Liliental-Weber, Zuzanna/H-8006-2012 NR 49 TC 6 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD SEP-OCT PY 1995 VL 13 IS 5 BP 2081 EP 2091 DI 10.1116/1.588081 PG 11 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA TA466 UT WOS:A1995TA46600027 ER PT J AU PUFFER, RL AF PUFFER, RL TI ARMAGEDDON - THE REALITY BEHIND THE DISTORTIONS, MYTHS, LIES, AND FALLACIES OF WORLD-WAR-II - PONTING,C SO LIBRARY JOURNAL LA English DT Book Review RP PUFFER, RL (reprint author), USAF,HIST PROGRAM,EDWARDS AFB,CA 93523, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD SEP 1 PY 1995 VL 120 IS 14 BP 190 EP 190 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA RQ788 UT WOS:A1995RQ78800118 ER PT J AU SABA, CS CENTERS, PW AF SABA, CS CENTERS, PW TI ADVANCES IN AEROSPACE LUBRICANT AND WEAR METAL ANALYSIS SO LUBRICATION ENGINEERING LA English DT Article DE LUBRICANT ANALYTICAL TECHNIQUES; LUBRICANTS; WEAR AND FAILURE ID SPECTROSCOPY; FERROGRAPH; IRON; OILS AB Wear metal analysis continues to play an effective diagnostic role for condition monitoring of gas turbine engines. Since the early 1960s the United States' military services have been using spectrometric oil analysis program (SOAP) to monitor the condition of aircraft engines. The SOAP has proven to be effective in increasing reliability, fleet readiness and avoiding losses of lives and machinery. Even though historical data have demonstrated the success of the SOAP in terms of detecting imminent engine failure verified by maintenance personnel, the SOAP is not a stand-alone technique and is limited in its detection of large metallic wear debris. In response, improved laboratory, portable, in-line and on-line diagnostic techniques to perfect SOAP and oil condition monitoring have been sought. The status of research and development as well as the direction of future developmental activities in oil analysis due to technological opportunities, advances in engine development and changes in military mission are reviewed and discussed. C1 USAF MAT COMMAND,WRIGHT LAB,LUBRICANTS AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH 45433. RP SABA, CS (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 54 TC 1 Z9 1 U1 0 U2 1 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD SEP PY 1995 VL 51 IS 9 BP 777 EP 783 PG 7 WC Engineering, Mechanical SC Engineering GA RT515 UT WOS:A1995RT51500008 ER PT J AU MATIKAS, TE KARPUR, P DUTTON, R KIM, R AF MATIKAS, TE KARPUR, P DUTTON, R KIM, R TI INFLUENCE OF THE INTERFACE AND FIBER SPACING ON THE FRACTURE-BEHAVIOR OF GLASS MATRIX COMPOSITES SO MATERIALS EVALUATION LA English DT Article DE CERAMICS; COMPOSITE MATERIALS; FRACTURE MECHANICS; GLASS MATRIX CERAMIC COMPOSITES; MICROCRACKS; MICROMECHANICS; NONDESTRUCTIVE CHARACTERIZATION; ULTRASOUND AB In this work, a nondestructive methodology is provided to determine the presence of microcracking in unidirectional SiC fiber reinforced brittle (borosilicate glass) matrix composites and to detect internal cracks in the composites that did not reach the surface of the specimen. The methodology is based on a combination of several ultrasonic techniques including shear back reflectivity (SBR), back-reflected surface wave imaging and acoustic microscopy. The composites used in this study were made with controlled fiber spacing consisting of regular arrays of either TiB2 coated SIGMA 1240 or carbon coated SCS-6 monofilament fibers in a series of borosilicate glasses. The combinations of different constituents provided composite samples with various fiber matrix interface properties. The composites were subjected to axial loading, and the stress in the composite when matrix cracking first occurs was determined and compared with theoretical values provided by a semi-empirical model which can assume either a completely bonded (i. e. perfect) or completely unbonded (i. e. pure slip) fibre-matrix interface. Results from the tensile data for different glass matrix composite systems were also compared with data of interface elastic property evaluation using ultrasonic SEX technique, allowing investigation of the influence of the fiber-matrix interface elastic property, the volume fraction of the fibers, and the state of radial residual stresses at the interface, on the fracture behavior of glass matrix composites. C1 NATL INST STAND & TECHNOL,WRIGHT LAB,MAT DIRECTORATE,WL MLLN,WRIGHT PATTERSON AFB,OH 45433. RP MATIKAS, TE (reprint author), UNIV DAYTON,RES INST,300 COLL PK AVE,DAYTON,OH 45469, USA. RI Matikas, Theodore/I-2803-2012 NR 18 TC 3 Z9 3 U1 1 U2 1 PU AMER SOC NON-DESTRUCTIVE TEST PI COLUMBUS PA 1711 ARLINGATE LANE PO BOX 28518, COLUMBUS, OH 43228-0518 SN 0025-5327 J9 MATER EVAL JI Mater. Eval. PD SEP PY 1995 VL 53 IS 9 BP 1045 EP 1051 PG 7 WC Materials Science, Characterization & Testing SC Materials Science GA RT981 UT WOS:A1995RT98100009 ER PT J AU BOYUM, EA MALL, S AF BOYUM, EA MALL, S TI FATIGUE BEHAVIOR OF A CROSS-PLY TITANIUM MATRIX COMPOSITE UNDER TENSION-TENSION AND TENSION-COMPRESSION CYCLING SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT TMS/ASM Symposium on Mechanisms and Mechanics of MMC Fatigue CY OCT 02-06, 1994 CL CHICAGO, IL SP TMS, ASM DE FATIGUE; TITANIUM MATRIX COMPOSITE; TENSION-TENSION; TENSION-COMPRESSION AB The fatigue behavior of a titanium-based metal-matrix composite reinforced with silicon carbide fibers, SCS-6/Ti-15-3, with the cross-ply lay-up of [0/90](2S), was investigated at room temperature for two conditions; tension-tension and tension-compression. On the maximum applied stress basis, the tension-tension condition had longer fatigue lives than the tension-compression condition. On the stress-range basis, however, the tension-tension condition had shorter fatigue lives than the tension-compression condition. For both conditions, three distinct regimes of fatigue behavior were present. These were fiber-dominated, matrix-dominated, and mixed fiber/matrix-dominated regions. In these regimes, fatigue damage mechanisms and the stress-strain response during cycling were, in general, similar for both fatigue conditions. However, additional damage mechanisms and plasticity sites were present in tension-compression cycling which resulted in different fatigue lives in comparison with tension-tension cycling. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 13 TC 10 Z9 10 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP PY 1995 VL 200 IS 1-2 BP 1 EP 11 DI 10.1016/0921-5093(95)07006-0 PG 11 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TA287 UT WOS:A1995TA28700002 ER PT J AU NICHOLAS, T AF NICHOLAS, T TI AN APPROACH TO FATIGUE LIFE MODELING IN TITANIUM-MATRIX COMPOSITES SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT TMS/ASM Symposium on Mechanisms and Mechanics of MMC Fatigue CY OCT 02-06, 1994 CL CHICAGO, IL SP TMS, ASM DE FATIGUE; MODELING; ELEVATED TEMPERATURES AB A review of the procedures developed by the author and his colleagues over the last several years for predicting elevated-temperature fatigue life of metal-matrix composites is presented. Modeling approaches involve concepts of both linear and non-linear summation of damage from cycle-dependent as well as time-dependent mechanisms. The analyses, further, treat the micromechanical stresses in the constituents as parameters in the life prediction models. The material characterized is SCS-6/Timetal(R)21S, a metastable beta titanium alloy reinforced with continuous SIC fibers. Modeling is applied to isothermal fatigue at different frequencies and temperatures, and thermomechanical fatigue (TMF) under both in-phase and out-of-phase loading conditions at different temperature ranges and maximum temperatures. Experimental data are used as the basis for determining the parameters embedded in the models. The numerical results, in turn, provide insight into the dominant mechanisms controlling fatigue life under a given condition. The capability to correlate experimental data from a wide variety of test conditions for several versions of a damage summation model is demonstrated. RP NICHOLAS, T (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 22 TC 20 Z9 21 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP PY 1995 VL 200 IS 1-2 BP 29 EP 37 DI 10.1016/0921-5093(95)07002-8 PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TA287 UT WOS:A1995TA28700005 ER PT J AU SANDERS, B MALL, S AF SANDERS, B MALL, S TI ISOTHERMAL FATIGUE BEHAVIOR OF A TITANIUM MATRIX COMPOSITE UNDER A HYBRID STRAIN-CONTROLLED LOADING CONDITION SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT TMS/ASM Symposium on Mechanisms and Mechanics of MMC Fatigue CY OCT 02-06, 1994 CL CHICAGO, IL SP TMS, ASM DE ISOTHERMAL FATIGUE; TITANIUM MATRIX COMPOSITE; STRAIN ID LAMINATE; DAMAGE AB The fatigue response of an eight-ply, unidirectional, titanium-based metal-matrix composite (MMC) (SCS-6/Ti-15-3) was investigated at elevated temperature (427 degrees C) using a hybrid strain-controlled loading mode. This hybrid control mode did not allow the thin MMC specimen to experience any compressive stress and, thus, prevented buckling. All fatigue testing was conducted at a constant strain rate of 0.2% s(-1). Damage mechanisms were systematically identified for the cases when loading was parallel or perpendicular to the fiber direction. When the fibers were parallel to the loading direction, the dominant damage mechanism was either fiber fracture or matrix cracking. Matrix creep occurred at all levels of strain, and matrix plasticity was observed when the strain level was greater than 0.55%. When loading was perpendicular to the fiber direction, the fiber-matrix interfacial damage was the dominant damage mechanism. The severity of this damage varied depending upon the maximum strain level. Matrix cracks also had a critical effect on the fatigue response when the maximum strain level was greater than 0.35%. Plastic deformation in the matrix material occurred for strain levels greater than 0.23%, and matrix creep was a key factor al all strain levels. Fatigue-life diagrams along with dominant deformation and damage mechanisms were established for both cases and are compared with previous studies. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP SANDERS, B (reprint author), USAF,WRIGHT LAB,MLLN,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 30 TC 7 Z9 7 U1 0 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD SEP PY 1995 VL 200 IS 1-2 BP 130 EP 139 DI 10.1016/0921-5093(95)07003-6 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TA287 UT WOS:A1995TA28700014 ER PT J AU SOUTHALL, HL MAILLOUX, RJ TURTLE, JP AF SOUTHALL, HL MAILLOUX, RJ TURTLE, JP TI COVERAGE ANALYSIS OF AIRBORNE SATCOM PHASED-ARRAY ANTENNAS SO MICROWAVE JOURNAL LA English DT Note AB This paper presents phased-army antenna performance predictions to help position an antenna on an aircraft. The baseline case is a symmetrical, planar array located horizontally on top of the fuselage. An array tilted at various angles to simulate different installation locations on the aircraft is considered. Scan loss contours, also called scanning shields, that show coverage as a function of tilt angle are presented. RP SOUTHALL, HL (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU HORIZON HOUSE-MICROWAVE PI NORWOOD PA 685 CANTON ST, NORWOOD, MA 02062 SN 0192-6225 J9 MICROWAVE J JI Microw. J. PD SEP PY 1995 VL 38 IS 9 BP 132 EP & PG 0 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RU662 UT WOS:A1995RU66200007 ER PT J AU WILLIAMS, H LANGLOIS, PF KELLY, JL AF WILLIAMS, H LANGLOIS, PF KELLY, JL TI THE EFFECT OF SIMULTANEOUS INTRAVENOUS ADMINISTRATION OF NITROGLYCERIN AND HEPARIN ON PARTIAL THROMBOPLASTIN TIME SO MILITARY MEDICINE LA English DT Article AB The purpose of this study was to determine whether intravenous nitroglycerin, when infused simultaneously through the same tubing with heparin, alters the anticoagulant effect of heparin as evidenced by partial thromboplastin time (PTT) values. A time series, cross-over design was used. The study included patients admitted to the Coronary Care Unit with a diagnosis of unstable angina. Patients were randomly as signed to one of two treatment groups: (1) heparin/nitroglycerin infused in the same site or (2) heparin/nitroglycerin in fused in separate sites. After 18 hours, treatments were reversed, PTT results were measured seven times per subject. Ninety-eight subjects, 70 males and 28 females, participated. Mean age was 62.4 +/- 9 years. Using repeated measures anal ysis of variance, there was no change in the patients' PTTs (p = 0.47). Prior to this study, research was divided on whether nitroglycerin interferes with heparin's activity. This study indicates no significant difference in PTT in subjects receiving these infusions via separate or the same intravenous sites. RP WILLIAMS, H (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 0 TC 2 Z9 2 U1 1 U2 1 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1995 VL 160 IS 9 BP 449 EP 452 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA RU744 UT WOS:A1995RU74400007 PM 7478029 ER PT J AU WILCOX, LAR GRIMWOOD, RE AF WILCOX, LAR GRIMWOOD, RE TI A COMPARATIVE-STUDY OF DIGITAL IMAGES VERSUS 35-MILLIMETER IMAGES SO MILITARY MEDICINE LA English DT Article AB Digital imaging is an alternative to 35-mm Kodachromes and may be a useful tool to the physician. The purpose of this study was to compare the quality of digital images to 35-mm images and then compare the two methods based on the ability to make the correct diagnosis. Dermatology patients were photographed with both a digital camera and a 35-mm camera. Images from 22 patients were compared and graded on four criteria (sharpness of image, contrast, depth of field, and trueness of color). Diagnoses were then made from 30 pairs of images of different patients. In all graded areas the 35-mm images scored significantly higher. The correct diagnosis was made in 69.6% of the digital images compared to 77.3% of the 35-mm images, a difference that was not statistically significant. One may conclude that digital images hold promise for present and future use in dermatology and other areas of medicine. RP WILCOX, LAR (reprint author), WILFORD HALL USAF MED CTR,DEPT DERMATOL,220 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 5 Z9 6 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1995 VL 160 IS 9 BP 470 EP 472 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA RU744 UT WOS:A1995RU74400013 PM 7478035 ER PT J AU DUBOIS, JJ CHENG, J POKORNY, WJ AF DUBOIS, JJ CHENG, J POKORNY, WJ TI INFLAMMATORY PSEUDOCYST ASSOCIATED WITH TRISOMY-21 AND HIRSCHSPRUNGS-DISEASE SO MILITARY MEDICINE LA English DT Note AB A 15-month-old black male with trisomy 21 and Hirschsprung's disease developed an inflammatory abdominal pseudocyst 1 month after Swenson pull-through repair. Although abdominal pseudocyst associated with ventriculoperitoneal shunts, peritoneal dialysis catheters, meconium peritonitis, and pancreatitis have been reported, this is the first report of a pseudocyst developing 1 month after a surgical repair of Hirschsprung's disease. RP DUBOIS, JJ (reprint author), USAF MC,DEPT SURG,MED GRP 60,101 BODIN CIRCLE,TRAVIS AFB,CA 94535, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD SEP PY 1995 VL 160 IS 9 BP 477 EP 479 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA RU744 UT WOS:A1995RU74400015 PM 7478037 ER PT J AU FLORES, S CHARLTON, DG EVANS, DB AF FLORES, S CHARLTON, DG EVANS, DB TI REPAIRABILITY OF A POLYACID-MODIFIED COMPOSITE RESIN SO OPERATIVE DENTISTRY LA English DT Article ID GLASS-IONOMER CEMENTS; RESTORATIVE MATERIALS; STRENGTH; REPAIR; BOND AB The purpose of this study was to evaluate the effect of time and surface treatment resulting shear bond strength polyacid-modified composite resin restorative material (VariGlass VLC), Seventy-two specimens of VariGlass were prepared in cavities (2 mm at 7 mm) cut into acrylic resin cylinders. The specimens were then divided into three groups of 24. For each of the three groups, 12 of the specimens were repaired 5 minutes after the cavities were initially filled, while 12 specimens were repaired 1 week after the initial fill. The VariGlass surfaces were treated in one of the following ways: no treatment; primer (30 seconds) and adhesive (light activated for 10 seconds); or 37% phosphoric acid etchant (30 seconds), primer (30 seconds), and adhesive (light activated for 10 seconds). Repairs were made using a split polytetrafluoroethylene mold (3 mm x 5 mm) mounted over the exposed VariGlass surface. After bonding a cylinder of VariGlass to the treated surfaces, the specimens were thermocycled 500 times (5 degrees C and 55 degrees C water baths), stored in distilled water for 1 week, and loaded to failure in shear at 0.5 mm/min. Data were analyzed using two-way ANOVA and a Student-Newman-Keuls multiple comparison test. Results indicated that the bond strength of specimens repaired at 5 minutes was significantly higher when no surface treatment was used prior to repair. Bond strength of specimens repaired at 1 week was unaffected by surface treatment. Time of repair significantly affected the no-treatment and the primer-adhesive groups. RP FLORES, S (reprint author), WILFORD HALL USAF MED CTR,DEPT GEN DENT,1615 TRUEMPER ST,LACKLAND AFB,TX 78236, USA. NR 14 TC 7 Z9 7 U1 0 U2 0 PU UNIV WASHINGTON PI SEATTLE PA SCHOOL DENTISTRY SM-57, SEATTLE, WA 98195 SN 0361-7734 J9 OPER DENT JI Oper. Dent. PD SEP-OCT PY 1995 VL 20 IS 5 BP 191 EP 196 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RU961 UT WOS:A1995RU96100005 PM 8710698 ER PT J AU MOONEY, JM SILVERMAN, J CAEFER, CE AF MOONEY, JM SILVERMAN, J CAEFER, CE TI POINT TARGET DETECTION IN CONSECUTIVE FRAME STARING INFRARED IMAGERY WITH EVOLVING CLOUD CLUTTER SO OPTICAL ENGINEERING LA English DT Article DE INFRARED STARING CAMERA; POINT TARGET DETECTION; TEMPORAL PROCESSING; CONSECUTIVE FRAMES; METRICS; CLOUD CLUTTER AB The problem of detection of aircraft at long range in a background of evolving cloud clutter is treated. A staring infrared camera is favored for this application due to its passive nature, day/night operation, and rapid frame rate. The rapid frame rate increases the frame-to-frame correlation of the evolving cloud clutter; cloud-clutter leakage is a prime source of false alarms. Targets of opportunity in daytime imagery were used to develop and compare two algorithm approaches: banks of spatio-temporal velocity filters followed by dynamic-programming-based stage-to-stage association, and a simple recursive temporal filter arrived at from a singular-value decomposition analysis of the data. To quantify the relative performance of the two approaches, we modify conventional metrics for signal-to-clutter gains in order to make them more germane to consecutive frame real data processing. The temporal filter, in responding preferentially to pixels influenced by moving point targets over those influenced by drifting clouds, achieves impressive cloud-clutter suppression without requiring subpixel frame registration. The velocity filter technique is roughly half as effective in clutter suppression but is twice as sensitive to weak targets in white noise (close to blue sky conditions). The real-time hardware implementation of the temporal filter is far more practical. RP MOONEY, JM (reprint author), USAF,ROME LAB,DIV ELECTR DEVICE TECHNOL,IR SURVEILLANCE BRANCH,BEDFORD,MA 01731, USA. NR 17 TC 25 Z9 27 U1 0 U2 1 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD SEP PY 1995 VL 34 IS 9 BP 2772 EP 2784 DI 10.1117/12.210757 PG 13 WC Optics SC Optics GA RU801 UT WOS:A1995RU80100045 ER PT J AU MATSON, CL MAGEE, EP HOLLAND, DE AF MATSON, CL MAGEE, EP HOLLAND, DE TI REFLECTIVE TOMOGRAPHY USING A SHORT-PULSELENGTH LASER - SYSTEM-ANALYSIS FOR ARTIFICIAL-SATELLITE IMAGING SO OPTICAL ENGINEERING LA English DT Article DE TOMOGRAPHY; REFLECTIVE TOMOGRAPHY; LASER RADAR ID SAMPLING THEOREMS; RECONSTRUCTION AB The Air Force Phillips Laboratory is in the process of demonstrating an advanced space surveillance capability with a heterodyne laser radar (ladar) system. Notable features of this radar system include its narrow (< 1.5 ns) micropulses, contained in a pulse-burst waveform that allows high-resolution range data to be obtained, and its high power (30 J in a pulse burst), which permits reasonable signal returns from satellites, The usefulness of these range data for use in reflective tomographic reconstructions of satellite images is discussed. A brief review of tomography is given. Then it is shown that the ladar system is capable of providing adequate range-resolved data for reflective tomographic reconstructions in terms of range resolution and sampling constraints. Mathematical expressions are derived which can be used to convert the ladar returns into reflective projections. Image reconstructions from computer-simulated data which include the effects of laser speckle and photon noise are presented and discussed. These reconstructions contain artifacts even in the absence of noise, due to the inadequacies of the standard tomographic problem formulation to accurately model the reflective projections obtained from the ladar system. However, object features can still be determined from the reconstructions when typical noise levels are included in the simulation. C1 USAF,PHILLIPS LAB,DIV ADV IMAGING,IMAGING TECHNOL BRANCH,KIRTLAND AFB,NM 87117. NR 18 TC 23 Z9 25 U1 1 U2 1 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD SEP PY 1995 VL 34 IS 9 BP 2811 EP 2820 DI 10.1117/12.210758 PG 10 WC Optics SC Optics GA RU801 UT WOS:A1995RU80100049 ER PT J AU BIFANO, CA HUBBARD, G EHLER, WJ AF BIFANO, CA HUBBARD, G EHLER, WJ TI TOTAL RECONSTRUCTION OF THE TEMPOROMANDIBULAR-JOINT WITH CRYOGENICALLY PRESERVED ALLOGRAFT MANDIBULAR CONDYLE, MENISCUS, AND FOSSA IN THE ADULT GOAT SO ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS LA English DT Article ID ARTICULAR-CARTILAGE; TRANSPLANTATION; REPLACEMENT; RABBIT AB Objective. The purpose of this study was to determine the, feasibility of total temporomandibular joint reconstruction with the use of cryogenically preserved allograft mandibular condyle, disk, and fossa in the adult goat. Study Design. This study consisted of an experimental group of 10 adult goats' that underwent total resection of their temporomandibular joints, These animals were immediately reconstructed with cryogenically preserved mandibular condyles, disks, and fossa. These allograft were harvested from 10 donor animals matched to the recipient animal with respect to age, sex, and head dimensions. These grafts were harvested and stored at -185 degrees C for several months before implantation. At 2 years after surgery, the animals were killed. They were evaluated, clinically, radiographically, and histologically. Results. Fifty percent of the eight surviving animals had a normal clinically functional joint with an intact superior joint space and viable articular surfaces. Conclusion. The authors conclude that this temporomandibular joint reconstruction technique is feasible in the adult goat model and is deserving of further research. C1 SW RES FDN,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,DIV VET SURG & HYPERBAR MED,LACKLAND AFB,TX 78236. NR 29 TC 7 Z9 9 U1 1 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 1079-2104 J9 ORAL SURG ORAL MED O JI Oral Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. PD SEP PY 1995 VL 80 IS 3 BP 267 EP 272 DI 10.1016/S1079-2104(05)80381-6 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RV606 UT WOS:A1995RV60600005 PM 7489267 ER PT J AU FIELDING, KH RUCK, DW AF FIELDING, KH RUCK, DW TI RECOGNITION OF MOVING LIGHT DISPLAYS USING HIDDEN MARKOV-MODELS SO PATTERN RECOGNITION LA English DT Article DE PATTERN RECOGNITION; HIDDEN MARKOV MODEL; MOVING LIGHT DISPLAYS ID PERCEPTION AB A spatio-temporal method of identifying moving light displays (MLDs) is presented. The hidden Markov model (HMM) technique is used as the classification algorithm, making classification decisions based on a spatio-temporal sequence of observed object features. Individual frames of a MLD image sequence are assumed to be segmented and contain very little spatial information. The information content is highly temporal in the sense that image sequences are required for object identification. A single look and alternate multiple frame classifier are used for comparison with the HMM technique. A three-class problem is considered, The single look average classification rate for the moving light display imagery was observed to be near 50%. In contrast, the hidden Markov model average classification rate was above 93%. The alternate nearest neighbor multiple frame technique average classification rate was 20% below the hidden Markov models. A one sided t-test revealed a highly statistically significant difference between the hidden Markov model and multiple frame technique at a 0.01 level of significance. C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 20 TC 4 Z9 4 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0031-3203 J9 PATTERN RECOGN JI Pattern Recognit. PD SEP PY 1995 VL 28 IS 9 BP 1415 EP 1421 DI 10.1016/0031-3203(94)00014-D PG 7 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA RV436 UT WOS:A1995RV43600008 ER PT J AU JOHNSON, ML ANDERSON, LL AF JOHNSON, ML ANDERSON, LL TI PAPULOSQUAMOUS PLAQUES IN A MOTHER AND NEWBORN SON - TINEA-CORPORIS SO PEDIATRIC DERMATOLOGY LA English DT Editorial Material RP JOHNSON, ML (reprint author), WILFORD HALL USAF MED CTR,DEPT DERMATOL,59 MED WING AETC-PSMD,2200 BERGQUIST DR STE 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0736-8046 J9 PEDIATR DERMATOL JI Pediatr. Dermatol. PD SEP PY 1995 VL 12 IS 3 BP 281 EP 284 DI 10.1111/j.1525-1470.1995.tb00179.x PG 4 WC Dermatology; Pediatrics SC Dermatology; Pediatrics GA RV975 UT WOS:A1995RV97500021 PM 7501567 ER PT J AU STYTZ, MR AMBURN, P LAWLIS, PK SHOMPER, K AF STYTZ, MR AMBURN, P LAWLIS, PK SHOMPER, K TI VIRTUAL ENVIRONMENTS RESEARCH IN THE AIR-FORCE-INSTITUTE-OF-TECHNOLOGY-VIRTUAL-ENVIRONMENTS, 3-D MEDICAL IMAGING, AND COMPUTER-GRAPHICS LABORATORY SO PRESENCE-TELEOPERATORS AND VIRTUAL ENVIRONMENTS LA English DT Article AB The Air Force Institute of Technology Virtual Environments, 3-D Medical Imaging, and Computer Graphics Laboratory is investigating the 3-D computer graphics, user-interface design, networking protocol, and software architecture aspects of distributed virtual environments. In this paper we describe the research projects that are underway in the laboratory. These projects include the development of an aircraft simulator for a distributed virtual environment, projects for observing, analyzing, and understanding virtual environments, a space virtual environment, a project that incorporates ''live'' aircraft range data into a distributed virtual environment, a virtual environment application framework, and a project for use in a hospital emergency department. We also discuss the research equipment infrastructure in the laboratory, recent publications, and the educational services we provide. RP STYTZ, MR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 46 TC 0 Z9 0 U1 0 U2 0 PU MIT PRESS PI CAMBRIDGE PA 55 HAYWARD ST JOURNALS DEPT, CAMBRIDGE, MA 02142 SN 1054-7460 J9 PRESENCE-TELEOP VIRT JI Presence-Teleoper. Virtual Env. PD FAL PY 1995 VL 4 IS 4 BP 417 EP 430 PG 14 WC Computer Science, Cybernetics; Computer Science, Software Engineering SC Computer Science GA TJ171 UT WOS:A1995TJ17100006 ER PT J AU SKOP, BP MASTERSON, BJ AF SKOP, BP MASTERSON, BJ TI MANIA SECONDARY TO LISINOPRIL THERAPY SO PSYCHOSOMATICS LA English DT Letter ID ANGIOTENSIN-CONVERTING ENZYME; ACE INHIBITORS; CAPTOPRIL C1 WILFORD HALL USAF MED CTR,DEPT INTERNAL MED,LACKLAND AFB,TX 78236. RP SKOP, BP (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,LACKLAND AFB,TX 78236, USA. NR 7 TC 4 Z9 4 U1 0 U2 0 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0033-3182 J9 PSYCHOSOMATICS JI Psychosomatics PD SEP-OCT PY 1995 VL 36 IS 5 BP 508 EP 509 PG 2 WC Psychiatry; Psychology SC Psychiatry; Psychology GA RR104 UT WOS:A1995RR10400015 PM 7568661 ER PT J AU MUENGER, EA AF MUENGER, EA TI SUDDENLY TOMORROW CAME, A HISTORY OF THE JOHNSON-SPACE-CENTER - DETHLOFF,HC SO PUBLIC HISTORIAN LA English DT Book Review RP MUENGER, EA (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV CALIF PRESS PI BERKELEY PA JOURNALS DEPT 2120 BERKELEY WAY, BERKELEY, CA 94720 SN 0272-3433 J9 PUBL HISTORIAN JI Public Hist. PD FAL PY 1995 VL 17 IS 4 BP 129 EP 132 PG 4 WC History SC History GA TM877 UT WOS:A1995TM87700033 ER PT J AU CUPELLO, JM AF CUPELLO, JM TI THE GENTLE ART OF CHARTERING A TEAM SO QUALITY PROGRESS LA English DT Article RP CUPELLO, JM (reprint author), ARMSTRONG LAB,CTR HUMAN SYST,QUAL IMPROVEMENT OFF,BROOKS AFB,TX, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC QUALITY CONTROL-ASQC PI MILWAUKEE PA ASQC MEMBERSHIP MANAGER 611 E. WISCONSIN AVENUE, MILWAUKEE, WI 53202 SN 0033-524X J9 QUAL PROG JI Qual. Prog. PD SEP PY 1995 VL 28 IS 9 BP 83 EP 87 PG 5 WC Engineering, Multidisciplinary; Engineering, Industrial; Management; Operations Research & Management Science SC Engineering; Business & Economics; Operations Research & Management Science GA RT679 UT WOS:A1995RT67900013 ER PT J AU BERRICHE, R DUTTON, R AF BERRICHE, R DUTTON, R TI ELASTIC-MODULI OF TIB2 AND C LAYERS IN A FIBER-REINFORCED GLASS-CERAMIC COMPOSITE SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP BERRICHE, R (reprint author), NATL RES COUNCIL CANADA,INST AEROSP RES,OTTAWA,ON K1A 0R6,CANADA. NR 11 TC 7 Z9 7 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD SEP 1 PY 1995 VL 33 IS 5 BP 789 EP 794 DI 10.1016/0956-716X(95)00302-C PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RN868 UT WOS:A1995RN86800015 ER PT J AU GUIDE, VDR AF GUIDE, VDR TI A SIMULATION-MODEL OF DRUM-BUFFER-ROPE FOR PRODUCTION PLANNING AND CONTROL AT A NAVAL AVIATION DEPOT SO SIMULATION LA English DT Article DE PRODUCTION PLANNING AND CONTROL; SCHEDULING HEURISTIC; MANUFACTURING SIMULATION; REMANUFACTURING AB This paper describes a SLAM II-FORTRAN simulation model of Drum-buffer-rope (DBR) as a production planning and control methodology at the engine component division of a Naval Aviation Depot. The model represents all of the functional areas of remanufacturing facility (a total of 27 shops) required for the repair/overhaul of an aviation component, as well as DBR for production planning and control. The model allows for experimentation in a variety of areas, including setting buffer sizes, buffer management techniques, input/output control, and capacity management. The model experiments indicate that DBR is an extremely robust method of production planning and control and that DBR leads to better performance to schedule, lower work-in-process inventory and improved use of present resources. RP GUIDE, VDR (reprint author), USAF,INST TECHNOL,GRAD SCH LOGIST & ACQUISIT MANAGEMENT,DEPT GRAD LOGIST MANAGEMENT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 9 Z9 9 U1 0 U2 4 PU SIMULATION COUNCILS INC PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92117 SN 0037-5497 J9 SIMULATION JI Simulation PD SEP PY 1995 VL 65 IS 3 BP 157 EP 168 DI 10.1177/003754979506500302 PG 12 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering SC Computer Science GA TC598 UT WOS:A1995TC59800001 ER PT J AU MICHEEL, LJ AF MICHEEL, LJ TI MULTIVALUED LOGIC APPLICATIONS OF HETEROSTRUCTURE DEVICES AND CIRCUITRY SO SOLID-STATE ELECTRONICS LA English DT Article; Proceedings Paper CT Topical Workshop on Heterostructure Microelectronics CY AUG 17-19, 1994 CL SUSONO CITY, JAPAN SP Asian Off Aerospace Res & Dev, Soc Non Tradit Technol, IEEE,, EDS, IEEE, MTT DE MULTIVALUED LOGIC; HETEROSTRUCTURE; III-V COMPOUNDS; QUANTUM DEVICES; NANOELECTRONICS AB Modern signal and data processors require in their arithmetic units extremely high throughput rates and very low data latency. Redundant multivalued logic (RMVL) offers highly effective solutions to this challenge. Recently silicon ULSI signal and microprocessors used RMV logic structures in their arithmetic units, achieving very high clock and throughput rates. In this paper we address III-V heterostructures for implementing RMVL arithmetic units with large reductions in device count and data latency, and with greatly increased speed. We include conventional, quantum, and combination devices. A strategy for binary and RMVL implementation of large nanoelectronic arrays concludes the paper. RP MICHEEL, LJ (reprint author), USAF,WRIGHT LAB,2241 AVION CIRCLE,SUITE 17,WRIGHT PATTERSON AFB,OH 45433, USA. NR 31 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 1995 VL 38 IS 9 BP 1603 EP 1606 DI 10.1016/0038-1101(95)00063-Y PG 4 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RU230 UT WOS:A1995RU23000009 ER PT J AU SCHUERMEYER, F CERNY, C LOEHR, JP SHERRIFF, RE AF SCHUERMEYER, F CERNY, C LOEHR, JP SHERRIFF, RE TI PHOTOELECTRIC-EMISSION AND CONDUCTANCE STUDIES ON FULLY FABRICATED PHEMTS SO SOLID-STATE ELECTRONICS LA English DT Article; Proceedings Paper CT Topical Workshop on Heterostructure Microelectronics CY AUG 17-19, 1994 CL SUSONO CITY, JAPAN SP Asian Off Aerospace Res & Dev, Soc Non Tradit Technol, IEEE,, EDS, IEEE, MTT DE PHOTOELECTRIC; PHEMT; PHOTOEMISSION; BANDS ID PHOTOLUMINESCENCE AB Photoelectric measurement techniques are ideally suited to investigate barrier and bandgap energies in pseudomorphic heterostructure FETs. In these devices the bandgap in the channel is smaller than that of the substrate and hence there exists a wavelength window in which the substrate is transparent and the channel is absorbing. Consequently, photoelectric measurements can be performed on fully fabricated PHEMTs using backside illumination. In this paper we describe photocurrent measurements for two distinct processes: photoemission of carriers between the Schottky gate and the channel, and photoconduction through the channel. We have successfully modeled the observed shift in the onset of photoconduction using a self-consistent Schrodinger-Poisson solution. The peak photocurrent magnitude shows non-monotonic dependence on gate bias, possibly suggesting amplification of the photocurrent. RP SCHUERMEYER, F (reprint author), USAF,WRIGHT LAB,2241 AVION CIRCLE,STE 17,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 1995 VL 38 IS 9 BP 1615 EP 1618 DI 10.1016/0038-1101(95)00060-7 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RU230 UT WOS:A1995RU23000012 ER PT J AU LIOU, JJ ORTIZCONDE, A LIOU, LL HUANG, CI AF LIOU, JJ ORTIZCONDE, A LIOU, LL HUANG, CI TI THERMAL-AVALANCHE INTERACTING BEHAVIOR OF ALGAAS/GAAS MULTI-EMITTER FINGER HETEROJUNCTION BIPOLAR-TRANSISTORS SO SOLID-STATE ELECTRONICS LA English DT Article; Proceedings Paper CT Topical Workshop on Heterostructure Microelectronics CY AUG 17-19, 1994 CL SUSONO CITY, JAPAN SP Asian Off Aerospace Res & Dev, Soc Non Tradit Technol, IEEE,, EDS, IEEE, MTT DE ALGAAS/GAAS HBT; THERMAL; AVALANCHE AB A theoretical study on the heterojunction bipolar transistor (HBT) avalanche characteristics is presented, and an empirical model to describe the observed HBT behavior developed. It is found that using the impact ionization mechanism alone cannot fully explain the small-geometry HBT avalanche behaviour, and the thermal effect needs to be included due to the elevated temperature in such operation. The model compares favorably with experimental data measured from a 6-emitter finger HBT. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LIOU, JJ (reprint author), UNIV CENT FLORIDA,DEPT ELECT & COMP ENGN,ORLANDO,FL 32186, USA. RI Ortiz-Conde, Adelmo/H-6251-2012 OI Ortiz-Conde, Adelmo/0000-0001-5073-5396 NR 8 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 1995 VL 38 IS 9 BP 1645 EP 1648 DI 10.1016/0038-1101(95)00051-T PG 4 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RU230 UT WOS:A1995RU23000019 ER PT J AU SCHUERMEYER, F GRIDER, D IKOMA, T ISHIBASHI, T FUJISHIRO, S YOKOYAMA, N AF SCHUERMEYER, F GRIDER, D IKOMA, T ISHIBASHI, T FUJISHIRO, S YOKOYAMA, N TI PROCEEDINGS OF THE TOPICAL WORKSHOP ON HETEROSTRUCTURE MICROELECTRONICS - PREFACE SO SOLID-STATE ELECTRONICS LA English DT Editorial Material C1 TEXAS INSTRUMENTS INC, RES & DEV, TSUKUBA, IBARAKI, JAPAN. HUGHES RES LABS, MALIBU, CA 90265 USA. NIPPON TELEGRAPH & TEL PUBL CORP, TOKYO, JAPAN. RP SCHUERMEYER, F (reprint author), USAF, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1101 EI 1879-2405 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD SEP PY 1995 VL 38 IS 9 BP R7 EP R7 PG 1 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RU230 UT WOS:A1995RU23000001 ER PT J AU LEE, J AF LEE, J TI CHAOS AND DIRECT NUMERICAL-SIMULATION IN TURBULENCE SO THEORETICAL AND COMPUTATIONAL FLUID DYNAMICS LA English DT Article ID TWO-DIMENSIONAL TURBULENCE; 2-DIMENSIONAL TURBULENCE; STRANGE ATTRACTORS; LYAPUNOV EXPONENTS; INVISCID DYNAMICS; FLOWS; EVOLUTION; BEHAVIOR; SYSTEMS; MODELS AB We show that direct numerical simulation will yield turbulent flowfields which are strongly dependent upon computer hardware and software. A computed flow trajectory is apparently uncorrelated to the true solution of a flowfield if it is allowed to evolve over a long time, and hence is called a pseudo-orbit. This is due to the trajectory instability of chaotic turbulent flows. All is not lost, however; a long-time average of flow quantities can now be computed using a pseudo-orbit by invoking the shadowing lemma. For the inviscid flow, this time average tends to approach asymptotically the phase average as predicted by the classical ergodic theorem. Although the inviscid two-dimensional Bow has no real physical importance, the existence of canonical (equilibrium) distribution permits us to examine the accuracy of time averaging based on the pseudo-orbit and its inherent limitations. RP LEE, J (reprint author), WRIGHT LAB,FIB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 45 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0935-4964 J9 THEOR COMP FLUID DYN JI Theor. Comput. Fluid Dyn. PD SEP PY 1995 VL 7 IS 5 BP 363 EP 395 DI 10.1007/BF00312415 PG 33 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA RZ155 UT WOS:A1995RZ15500004 ER PT J AU WANG, X PAXTON, AH SRINIVASAN, S SUN, SZ DENTE, GC BOSSERT, D HERSEE, SD AF WANG, X PAXTON, AH SRINIVASAN, S SUN, SZ DENTE, GC BOSSERT, D HERSEE, SD TI 1.5W CW SPATIALLY COHERENT POWER FROM REGROWN-LENS-TRAIN (RLT) UNSTABLE RESONATOR SEMICONDUCTOR-LASERS SO ELECTRONICS LETTERS LA English DT Article DE LASER CAVITY RESONATORS; SEMICONDUCTOR JUNCTION LASERS ID OPERATION AB CW operation of regrown-lens-train (RLT) unstable resonator semiconductor lasers has been demonstrated in an improved laser design. Up to 1.5W of coherent CW power was obtained with a beam divergence 4 times that of a perfectly dittraction limited device. C1 GCD ASSOCIATES INC,ALBUQUERQUE,NM 87110. USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. OPTO POWER CORP,CITY OF INDUSTRY,CA 91745. RP WANG, X (reprint author), UNIV NEW MEXICO,CTR HIGH TECHNOL MAT,ALBUQUERQUE,NM 87131, USA. NR 6 TC 7 Z9 7 U1 1 U2 1 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD AUG 31 PY 1995 VL 31 IS 18 BP 1571 EP 1573 DI 10.1049/el:19951105 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA RV301 UT WOS:A1995RV30100033 ER PT J AU SMITH, PJ AF SMITH, PJ TI PRIME SCIENCE - AN APPLICATIONS LED PROGRAM FOR GRADES 6 THROUGH 10 SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,AIR ACAD HIGH SCH,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 20 PY 1995 VL 210 BP 32 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA RP256 UT WOS:A1995RP25600556 ER PT J AU TROHALAKI, S PACHTER, R AF TROHALAKI, S PACHTER, R TI PHASE-DIAGRAMS FOR NONTOXIC DEICER COMPOUNDS FROM MOLECULAR-DYNAMICS SIMULATIONS AND FLORY-HUGGINS THEORY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 20 PY 1995 VL 210 BP 91 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA RP256 UT WOS:A1995RP25601366 ER PT J AU WANG, CS VENKATASUBRAMANIAN, N PRICE, G HOUTZ, M TAN, LS AF WANG, CS VENKATASUBRAMANIAN, N PRICE, G HOUTZ, M TAN, LS TI PROPERTIES OF POLYAMIDES WITH CROSS-LINKABLE KETO-BENZOCYCLOBUTENE PENDANTS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 20 PY 1995 VL 210 BP 96 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA RP259 UT WOS:A1995RP25901363 ER PT J AU SRINIVASAN, KR BAI, SJ SPRY, RJ AF SRINIVASAN, KR BAI, SJ SPRY, RJ TI SYNTHESIS AND CONDUCTIVITY OF AROMATIC BENZOBISTHIAZOLE COPOLYMERS WITH MAIN-CHAIN DIPHENYLAMINO UNITS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV TECHNOL CORP,DAYTON,OH 45431. WRIGHT LAB,POLYMER BRANCH,WL MLBP,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 20 PY 1995 VL 210 BP 97 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA RP259 UT WOS:A1995RP25901364 ER PT J AU SIDDIQUI, M AMY, G COOPER, W AF SIDDIQUI, M AMY, G COOPER, W TI DISINFECTION BY-PRODUCTS CONTROL BY HIGH-ENERGY ELECTRON-BEAM (HEEB) IRRADIATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,COLORADO SPRINGS,CO 80840. UNIV COLORADO,BOULDER,CO 80309. FLORIDA INT UNIV,MIAMI,FL 33199. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD AUG 20 PY 1995 VL 210 BP 203 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA RP256 UT WOS:A1995RP25601632 ER PT J AU WARREN, GS SCOTT, WR AF WARREN, GS SCOTT, WR TI NUMERICAL DISPERSION IN THE FINITE-ELEMENT METHOD USING TRIANGULAR EDGE ELEMENTS SO MICROWAVE AND OPTICAL TECHNOLOGY LETTERS LA English DT Article DE FINITE-ELEMENT METHOD; TRIANGULAR MESH; DISPERSION; WAVE PROPAGATION AB The discretization inherent in the finite-element method results in the numerical dispersion of a propagating wave. The numerical dispersion of a time-harmonic plane wave propagating through an infinite, two-dimensional finite-element mesh composed of uniform triangular edge elements is investigated in this work. The effects on the numerical dispersion of the propagation direction of the wave, the electrical size of the elements, and the mesh geometry are investigated. The dispersion for the hexagonal mesh geometry is shown to be much smaller and to converge at a quicker rate than the other meshes. The dispersion analysis is validated by numerical examples. (C) 1995 John Wiley and Sons, Inc. RP WARREN, GS (reprint author), USAF,ROME LAB,ERAS,RL,31 GRENIER ST,BEDFORD,MA 01731, USA. NR 0 TC 15 Z9 15 U1 0 U2 1 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0895-2477 J9 MICROW OPT TECHN LET JI Microw. Opt. Technol. Lett. PD AUG 20 PY 1995 VL 9 IS 6 BP 315 EP 319 DI 10.1002/mop.4650090606 PG 5 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA RK742 UT WOS:A1995RK74200005 ER PT J AU FULLER, J AF FULLER, J TI THE INFLUENCE OF HYDROGEN-BONDING ON THE STRUCTURE OF 1-METHYLIMIDAZOLIUM D-TARTRATE SO ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY LA English DT Article ID 2ND HARMONIC-GENERATION; SALTS AB The title compound, 1-methylimidazolium D-tartrate, C4H7N2+.C4H5O6- consists of a tightly interwoven tartrate network that is hydrogen bonded to the imidazolium cations. There is a broad range of hydrogen-bond interactions within this structure. The interactions between the anions and cations are believed to influence the alignment of the cations and thereby contribute to the nonlinear optical activity of the salt. RP FULLER, J (reprint author), USAF ACAD, FRANK J SEILER RES LAB, 2354 VANDENBERG DR, SUITE 2A35, COLORADO SPRINGS, CO 80840 USA. NR 9 TC 6 Z9 6 U1 0 U2 1 PU INT UNION CRYSTALLOGRAPHY PI CHESTER PA 2 ABBEY SQ, CHESTER, CH1 2HU, ENGLAND SN 2053-2296 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Struct. Chem. PD AUG 15 PY 1995 VL 51 BP 1680 EP 1683 DI 10.1107/S0108270195002514 PN 8 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA RW830 UT WOS:A1995RW83000082 ER PT J AU HUNTON, DE AF HUNTON, DE TI CHARGE-TRANSFER REACTIONS OF METASTABLE BA(I) AND SR(I) IN THE CRRES G-11B CHEMICAL-RELEASE EXPERIMENT SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID CRITICAL VELOCITY IONIZATION; RADIATION EFFECTS SATELLITE; BARIUM RELEASE; MISSION AB Mass resolved fluxes of Ba+ and Sr+ ions were measured with the Quadrupole Ion Mass Spectrometer during the CRRES G-11b chemical release experiment in darkness. The flux of Sr+ relative to Ba+ at a distance of 4 km from the release point was more than ten times larger than expected based on estimated charge transfer cross sections of the ground state metals. In each metal, we have identified at least one low-lying metastable state that is closer to charge-transfer resonance with O+ than the ground state. These metastable states are 5s5p P-3(2) in Sr at 14, 899 cm(-1) above the ground state and 6s5d D-3(3) in Ba at 9,597 cm(-1). The Sr 5s5p P-3(2) state is nearly exactly resonant with O+ (9 meV energy defect) and may have a significantly enhanced charge transfer cross section. In a proposed mechanism that may explain the measured ion fluxes, neutral metal atoms are excited to these metastable states by electron-atom collisions early in the expansion of the neutral cloud. High energy electrons could be produced by a plasma process such as CIV. This energy is stored in the neutral cloud. The metastable atoms are ionized by near-resonant charge exchange with ambient O+ and are detected after the cloud expands to reach the spacecraft. RP HUNTON, DE (reprint author), USAF,MC,GEOPHYS DIRECTORATE,GPID,29 RANDOLPH RD,BEDFORD,MA 01731, USA. NR 28 TC 2 Z9 2 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD AUG 15 PY 1995 VL 22 IS 16 BP 2115 EP 2118 DI 10.1029/95GL02063 PG 4 WC Geosciences, Multidisciplinary SC Geology GA RT333 UT WOS:A1995RT33300010 ER PT J AU BELL, DE HUSSEY, TW AF BELL, DE HUSSEY, TW TI FLUX-PENETRATION OF AN ALUMINUM LINER DURING WORKING FLUID COMPRESSION SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MODEL AB The Phillips Laboratory working fluid experiment is a research effort to study the compression of a hot hydrogen gas using an electromagnetically imploded solid Liner. In our experiments, the solid Liner is driven by a 5 MJ discharge which Joule heats the aluminum, melting and eventually vaporizing it. This numerical study explores the vaporization and flux penetration of a solid aluminum liner during its implosion. In particular, it considers the effect that flux which has penetrated the liner has on the hot hydrogen working fluid. A study of the dynamics of the solid liner was performed with one-dimensional radiation magnetohydrodynamic simulations, which included a careful treatment of the electrical resistivity near the phase transitions. An analytic snowplow model is developed in order to estimate the minimum working fluid density required to ignore flux penetration through the liner. RP BELL, DE (reprint author), USAF,PHILLIPS LAB,DIV HIGH ENERGY PLASMA PHYS,KIRTLAND AFB,NM 87117, USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1995 VL 78 IS 4 BP 2260 EP 2264 DI 10.1063/1.360142 PG 5 WC Physics, Applied SC Physics GA RP718 UT WOS:A1995RP71800013 ER PT J AU JOGAI, B STUTZ, CE AF JOGAI, B STUTZ, CE TI A COMPARISON OF ELECTROCHEMICAL CAPACITANCE-VOLTAGE MEASUREMENTS WITH NUMERICAL SIMULATIONS FOR PSEUDOMORPHIC HIGH-ELECTRON-MOBILITY TRANSISTOR STRUCTURES SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID GAAS AB Electrochemical capacitance-voltage (EC-V) profiling is simulated numerically and the results compared with EC-V measurements for AlxGa1-xAs/InyGa1-yAs pseudomorphic high electron mobility transistor (p-HEMT) structures. The electrostatic potential is calculated at each etch step by solving the Poisson equation subject to surface pinning. The mobile charge is calculated within the Thomas-Fermi approximation. The calculated potential then forms the basis for the numerical EC-V, enabling the capacitance and apparent electron concentration to be computed. The reconstructed electron distribution has been compared with actual EC-V measurements on actual p-HEMT structures. The results affirm the ability of experimental EC-V to separate detailed features in the electron distribution, such as electrons localized in the delta layer and channel of p-HEMTs. Essentially, the reconstructed electron distribution is a warped version of the true distribution as determined from a self-consistent k . p calculation. In delta-doped p-HEMTs, for example, the separation between the charges in the delta layer and channel is less than the actual separation. This trend appears to agree with measured EC-V results. Subject to control over the etching uniformity, experimental EC-V should be capable of delineating detailed features in the electron distribution. Numerical EC-V has also been compared with standard capacitance-voltage (C-V) profiling. The reconstructed numerical C-V electron distribution agrees well with the numerical EC-V distribution. (C) 1995 American Institute of Physics. C1 WRIGHT LAB,ELR,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP JOGAI, B (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 16 TC 3 Z9 3 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1995 VL 78 IS 4 BP 2531 EP 2536 DI 10.1063/1.360108 PG 6 WC Physics, Applied SC Physics GA RP718 UT WOS:A1995RP71800052 ER PT J AU LOOK, DC SIZELOVE, JR AF LOOK, DC SIZELOVE, JR TI DEPLETION WIDTH AND CAPACITANCE TRANSIENT FORMULAS FOR DEEP TRAPS OF HIGH-CONCENTRATION SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SPECTROSCOPY; SEMICONDUCTORS AB We derive expressions for the depletion width and capacitance transient applicable to traps which may be deep and of high concentration. The new results are compared with those obtained from the commonly used formulas, and also from an exact analysis. Experimental deep level transient spectroscopic data for EL2 in GaAs are in good agreement. (C) 1995 American Institute of Physics. C1 WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,ELRA,WRIGHT PATTERSON AFB,OH 45433. RP LOOK, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 7 TC 18 Z9 18 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 15 PY 1995 VL 78 IS 4 BP 2848 EP 2850 DI 10.1063/1.360086 PG 3 WC Physics, Applied SC Physics GA RP718 UT WOS:A1995RP71800103 ER PT J AU SEMIATIN, SL SEGAL, VM GOETZ, RL GOFORTH, RE HARTWIG, T AF SEMIATIN, SL SEGAL, VM GOETZ, RL GOFORTH, RE HARTWIG, T TI WORKABILITY OF A GAMMA-TITANIUM ALUMINIDE ALLOY DURING EQUAL CHANNEL ANGULAR EXTRUSION SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article C1 TEXAS A&M UNIV,DEPT MECH ENGN,COLLEGE STN,TX 77843. UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. RP SEMIATIN, SL (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 14 TC 66 Z9 73 U1 2 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD AUG 15 PY 1995 VL 33 IS 4 BP 535 EP 540 DI 10.1016/0956-716X(95)00264-V PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RK976 UT WOS:A1995RK97600004 ER PT J AU KASPI, R EVANS, KR AF KASPI, R EVANS, KR TI IMPROVED COMPOSITIONAL ABRUPTNESS AT THE INGAAS ON GAAS INTERFACE BY PRESATURATION WITH IN DURING MOLECULAR-BEAM EPITAXY SO APPLIED PHYSICS LETTERS LA English DT Article ID SURFACE SEGREGATION; QUANTUM-WELLS; GROWTH; HETEROSTRUCTURES AB Surface segregation of In atoms during molecular beam epitaxy of InGaAs layers greatly influences the composition profile in the vicinity of both the normal and the inverted Ga(Al)As/InGaAs interface, inherently limiting compositional abruptness. We find, for example, that the intended alloy composition in In0.22Ga0.78As is not reached until nearly 35 Angstrom from the InGaAs on GaAs interface for growth at 500 degrees C. We propose and demonstrate how the compositionally graded region in InGaAs can be eliminated by preadsorbing a fixed amount of In onto the GaAs surface to match the surface segregated layer during steady state, before depositing the InGaAs layer. (C) 1995 American Institute of Physics. C1 USAF,WRIGHT LAB,ELDM,SOLID STATE ELECTR LAB,WRIGHT PATTERSON AFB,OH 45433. RP KASPI, R (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 13 TC 63 Z9 64 U1 0 U2 8 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD AUG 7 PY 1995 VL 67 IS 6 BP 819 EP 821 DI 10.1063/1.115454 PG 3 WC Physics, Applied SC Physics GA RN017 UT WOS:A1995RN01700030 ER PT J AU PICKARD, SM MIRACLE, DB MAJUMDAR, BS KENDIG, KL ROTHENFLUE, L COKER, D AF PICKARD, SM MIRACLE, DB MAJUMDAR, BS KENDIG, KL ROTHENFLUE, L COKER, D TI AN EXPERIMENTAL-STUDY OF RESIDUAL FIBER STRAINS IN TI-15-3 CONTINUOUS FIBER COMPOSITES SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID METAL MATRIX COMPOSITES; DEFORMATION; STRESSES AB A simplified experimental technique to determine the axial fiber residual strain in continuously-reinforced metal matrix composites is described. The residual fiber strains in two Ti-15V-3Cr-3Al-3Sn/SiC metal matrix composites have been measured with this technique. Residual fiber strains on the order of 0.2% are measured in the as-processed condition, and the residual stresses approach zero after testing the composite in tension to failure at room temperature. A conceptual description of the effect of tensile testing on the residual stresses is provided. The experimental results are consistent with predictions based on a concentric cylinder iso-strain analysis of thermal strains. Measurement errors result in a residual fiber strain error that is typically less than +/-0.05%. Periodic fiber bending induced by cross-weave fibers is also analyzed, and may contribute significantly to measurement errors. C1 USAF, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. SYSTRAN CORP, DAYTON, OH USA. UES INC, DAYTON, OH USA. UNIV DAYTON, RES INST, DAYTON, OH 45469 USA. RI Coker, Demirkan/B-3386-2011 OI Coker, Demirkan/0000-0001-7385-7089 NR 24 TC 19 Z9 20 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD AUG PY 1995 VL 43 IS 8 BP 3105 EP 3112 DI 10.1016/0956-7151(94)00436-L PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RK202 UT WOS:A1995RK20200022 ER PT J AU RIZZETTA, DP AF RIZZETTA, DP TI NUMERICAL-SIMULATION OF OBLIQUE SHOCK-WAVE VORTEX INTERACTION SO AIAA JOURNAL LA English DT Article ID EQUATIONS; NOISE AB High Reynolds number supersonic flowfields were generated numerically by integration of the time dependent three-dimensional compressible Euler and mass averaged Navier-Stokes equations in order to simulate the interaction of a streamwise vortex with an oblique shock wave. The vortex develops at the tip of a vortex generating fin which is suspended from the ceiling of a wind tunnel. Downstream, an oblique shock wave is produced by a wing surface which spans the width of the wind tunnel and has a two dimensional sharp leading-edge wedge as its airfoil section. Grid resolution studies are provided in order to assess accuracy of the solutions. Resultant features of the numerical flowfields are discussed, and comparison is made with experimental data in terms of static pressure distributions on the wing surface. RP RIZZETTA, DP (reprint author), USAF,WRIGHT LAB,DIV AEROMECH,COMPUTAT FLUID DYNAM RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 26 TC 9 Z9 9 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD AUG PY 1995 VL 33 IS 8 BP 1441 EP 1446 DI 10.2514/3.12566 PG 6 WC Engineering, Aerospace SC Engineering GA RN902 UT WOS:A1995RN90200011 ER PT J AU ROTHENFLUE, JA KING, PI AF ROTHENFLUE, JA KING, PI TI VORTEX DEVELOPMENT OVER FLAT-PLATE RIBLETS IN A TRANSITIONING BOUNDARY-LAYER SO AIAA JOURNAL LA English DT Note RP ROTHENFLUE, JA (reprint author), USAF,INST TECHNOL,ENA433,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 5 Z9 5 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD AUG PY 1995 VL 33 IS 8 BP 1525 EP 1526 DI 10.2514/3.12579 PG 2 WC Engineering, Aerospace SC Engineering GA RN902 UT WOS:A1995RN90200027 ER PT J AU ALLEN, CS SHORE, JW WESTFALL, CT AF ALLEN, CS SHORE, JW WESTFALL, CT TI SIMPLIFIED METHOD OF SIZING IMPLANTS FOR ORBITAL FRACTURE REPAIR SO AMERICAN JOURNAL OF OPHTHALMOLOGY LA English DT Note AB PURPOSE/METHODS: Over the past six years, we have used ordinary radiographic film as a template for sizing alloplastic implants for orbital fracture repair in over 60 patients, The implants are made of such materials as titanium, Vitallium, and porous high-density polyethylene. Autoclaved 9.5 x 4.5-cm rectangles of radiographic film are easily trimmed, held by nontoothed forceps, inserted, and removed from the orbital cavity. RESULTS/CONCLUSIONS: We have found this simple and inexpensive technique to be superior to using aluminum templates that are supplied in commercially available plating sets. C1 OPHTHALM CONSULTANTS BOSTON INC,BOSTON,MA 02114. WILFORD HALL USAF MED CTR,DEPT OPHTHALMOL,LACKLAND AFB,TX 78236. HARVARD UNIV,BRIGHAM & WOMENS HOSP,SCH MED,DEPT SURG,DIV OPHTHALMOL,BOSTON,MA 02115. NR 2 TC 1 Z9 2 U1 0 U2 0 PU OPHTHALMIC PUBL CO PI CHICAGO PA 77 WEST WACKER DR, STE 660, CHICAGO, IL 60601 SN 0002-9394 J9 AM J OPHTHALMOL JI Am. J. Ophthalmol. PD AUG PY 1995 VL 120 IS 2 BP 260 EP 261 PG 2 WC Ophthalmology SC Ophthalmology GA RM714 UT WOS:A1995RM71400022 PM 7639317 ER PT J AU COOK, RJ FEARN, H MILONNI, PW AF COOK, RJ FEARN, H MILONNI, PW TI FIZEAUS EXPERIMENT AND THE AHARONOV-BOHM EFFECT SO AMERICAN JOURNAL OF PHYSICS LA English DT Article AB The electromagnetic wave equations in a moving medium may be approximated by a form similar to that of the Schrodinger equation for a particle in an electromagnetic field, with the velocity v of the medium and the vorticity del xv playing the roles of the vector potential and magnetic field, respectively. A purely classical optical analogue of the Aharonov-Bohm effect follows by consideration of the interference pattern produced by two beams, each of which propagates in a region with zero vorticity, but such that the flux of the vorticity through the closed loop defined by the optical paths does not vanish. Fizeau's experiment (1851) on the velocity of light in moving media may be regarded as an example of such a situation. (C) 1995 American Association of Physics Teachers. C1 LOS ALAMOS NATL LAB,DIV THEORET T-4,LOS ALAMOS,NM 87545. RP COOK, RJ (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80840, USA. NR 28 TC 37 Z9 37 U1 0 U2 14 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0002-9505 J9 AM J PHYS JI Am. J. Phys. PD AUG PY 1995 VL 63 IS 8 BP 705 EP 710 DI 10.1119/1.17840 PG 6 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA RM558 UT WOS:A1995RM55800004 ER PT J AU ABBOTT, KL HARMAN, GS AF ABBOTT, KL HARMAN, GS TI COMBINATION CHEMOTHERAPY FOR DISSEMINATED MALIGNANT-MELANOMA SO ANTI-CANCER DRUGS LA English DT Review DE BONE MARROW TRANSPLANTATION; CHEMOTHERAPY; CISPLATINUM; DACARBAZINE; MELANOMA ID HIGH-DOSE CISPLATIN; BONE-MARROW TRANSPLANTATION; TRIAZENO IMIDAZOLE CARBOXAMIDE; PHASE-II TRIAL; METASTATIC MELANOMA; SEQUENTIAL CHEMOIMMUNOTHERAPY; SYSTEMIC CHEMOTHERAPY; CIS-PLATINUM; DACARBAZINE; VINCRISTINE AB Malignant melanoma, once disseminated, is associated with very short survival times and has proven highly resistant to systemic therapy. Although many chemotherapeutic agents can produce small response rates in these patients, the most consistent responses occur with dacarbazine (DTIC). Numerous combination regimens, with and without DTIC, have been tested against disseminated melanoma, with varying and inconsistent outcomes. The most encouraging results have occurred with the combination of DTIC, cisplatin, BCNU and tamoxifen. The use of high-dose chemotherapy with and without autologous bone marrow support and the addition of biologic agents such as inteferon-alpha and interleukin-2 to conventional chemotherapy have also been actively investigated. This paper reviews the various approaches taken against disseminated melanoma employing systemic chemotherapy. RP ABBOTT, KL (reprint author), WILFORD HALL USAF MED CTR,PSMH,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 74 TC 6 Z9 6 U1 0 U2 0 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0959-4973 J9 ANTI-CANCER DRUG JI Anti-Cancer Drugs PD AUG PY 1995 VL 6 IS 4 BP 489 EP 497 DI 10.1097/00001813-199508000-00001 PG 9 WC Oncology; Pharmacology & Pharmacy SC Oncology; Pharmacology & Pharmacy GA RN322 UT WOS:A1995RN32200001 PM 7579552 ER PT J AU PETERSON, P GAVRIELIDES, A SHARMA, MP AF PETERSON, P GAVRIELIDES, A SHARMA, MP TI DIODE-PUMPED TM - YAG SOLID-STATE LASERS WITH INDIRECT AND DIRECT MANIFOLD PUMPING SO APPLIED PHYSICS B-LASERS AND OPTICS LA English DT Article AB We study the continuous-wave (cw) characteristics of both two-manifold and three-manifold Tm:YAG laser pumped at lambda(p) approximate to 1.8 mu m or lambda(p) = 0.785 mu m and lasing at lambda(l) = 2.02 mu m. The three-manifold rate equations are adiabatically reduced to their two-manifold form. For each pumping scheme, the steady-state rate equations are combined with the cw differential equations for the forward- and reverse-lasing fields and the pump-depletion differential equation. These three coupled cw differential equations are solved analytically. This gives the linear flux-conservation law between the input pump and the laser output, the minimum crystal length, and optimal output couplings. We show that the major difference between these two pumping schemes is due to the different pump effective absorption cross sections and not the two-for-one cross relaxation. Our example shows that the minimum intensity threshold and optimal crystal length are smaller for pumping at lambda(p) = 0.785 mu m than pumping at lambda(p) approximate to 1.8 mu m. C1 UNIV NEW MEXICO,DEPT PHYS & ASTRON,ALBUQUERQUE,NM 87131. RP PETERSON, P (reprint author), USAF,PHILLIPS LAB,LIDN,NONLINEAR OPT CTR TECHNOL,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 10 TC 11 Z9 11 U1 0 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0946-2171 J9 APPL PHYS B-LASERS O JI Appl. Phys. B-Lasers Opt. PD AUG PY 1995 VL 61 IS 2 BP 195 EP 200 DI 10.1007/BF01090943 PG 6 WC Optics; Physics, Applied SC Optics; Physics GA TD246 UT WOS:A1995TD24600011 ER PT J AU CALHOUN, BC EDGEWORTH, D BREHM, W AF CALHOUN, BC EDGEWORTH, D BREHM, W TI EXTERNAL CEPHALIC VERSION AT A MILITARY TEACHING HOSPITAL - PREDICTORS OF SUCCESS SO AUSTRALIAN & NEW ZEALAND JOURNAL OF OBSTETRICS & GYNAECOLOGY LA English DT Article AB The purpose of this prospective study was to analyze our experience with external cephalic version under tocolysis. This included an expected (1) high success rate of version, (2) infrequent occurrence of reversion, (3) reduction in the incidence of intrapartum breech presentation, avoiding the need for Caesarean delivery, and (4) predictors of success in our series. The study spanned the period from 1985 to 1993, enrolling 113 subjects who presented to our OB/GYN Department with any type of breech presentation at 37 weeks' gestation or greater and met the following criteria: (1) absence of labour or ruptured membranes, (2) singleton pregnancy, (3) absence of medical or obstetrical complications and amniotic fluid index of greater than 8 cm. After a reassuring fetal assessment, IV terbutaline was given prior to an attempt at version. The results revealed a 46% (53 or 113) version success rate with a 4% (2 of 53) reversion within a week after procedure. There was a 2% (2 of 113) complication rate, with 1 being a minor incident of fetal bradycardia that responded easily to intrauterine resuscitation. One major complication occurred with placental abruption during the attempt, which required immediate Caesarean delivery. Predictors of success in our series included: multiparity, fundal/posterior placenta, and fetal head and spine on the corresponding side of the maternal sagittal plane. External cephalic version in a controlled setting can be a safe procedure for residents in training that lowers Caesarean delivery rate for breech presentation. C1 USAF,MED CTR,DEPT OBSTET & GYNECOL,KEESLER AFB,MS 39534. NR 0 TC 16 Z9 17 U1 0 U2 0 PU AUSTRALIAN NZ J OBSTET GYNAEC PI EAST MELBOURNE VICTORIA PA 254 ALBERT STREET COLLEGE HOUSE, EAST MELBOURNE VICTORIA 3002, AUSTRALIA SN 0004-8666 J9 AUST NZ J OBSTET GYN JI Aust. N. Z. J. Obstet. Gynaecol. PD AUG PY 1995 VL 35 IS 3 BP 277 EP 279 DI 10.1111/j.1479-828X.1995.tb01980.x PG 3 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA RR026 UT WOS:A1995RR02600009 PM 8546642 ER PT J AU BOMALASKI, SH CHEN, YT CONSTABLE, SH AF BOMALASKI, SH CHEN, YT CONSTABLE, SH TI CONTINUOUS AND INTERMITTENT PERSONAL MICROCLIMATE COOLING STRATEGIES SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID EXERCISE; HYPOHYDRATION AB A comparison was made between two personal auxiliary cooling approaches for the relief of thermal stress while wearing the standard USAF Chemical Defense Ensemble (CDE). Subjects exercised at approximately 40% VO(2)max in either warm (28/24/34 degrees C) or hot (38/26/43 degrees C) environmental conditions, (Tdb/Twb/Tbg degrees C, respectively). During each of three trials, four hours of intermittent work (four work/rest cycles) were attempted. Microclimate air cooling was applied in two different fashions and compared with a control trial during which no cooling was received (NC). In one trial, conditioned air cooling (Tin approximately 20 degrees Cdb) was delivered during rest periods only (intermittent cooling, IC), while during the second trial, ambient air cooling was also applied during the work period in addition to the conditioned air delivered during rest periods (continuous cooling, CC). During the warm condition, exposure cycle time was 45 min work and 15 min rest, while under the hot conditions, exposure cycle time was 30 min work and 30 min rest. Both CC and IC trials resulted in significantly extended work times, lower final rectal temperatures, heart rates, and sweat production (SP) than in the NC trial. Additionally, CC resulted in significantly lower SP, higher % sweat evaporation, and lower ratings of perceived exertion (RPE) and thermal comfort (TC) than IC at both warm and hot temperatures. Moreover, subjects were better able to maintain thermal equilibrium (i.e., cumulative heat balance) over time using CC compared to IC in the warm environment. The physiological significance of these findings, in some cases, was secondary to the improvement in subjective measures of TC and RPE. In conclusion, the addition of ambient air, microclimate cooling during work in these environments is effective in lowering thermal strain for subjects exercising in the heat while wearing the CDE. C1 ARMSTRONG LAB,SUSTAINED OPERAT BRANCH,BROOKS AFB,TX. NR 21 TC 18 Z9 18 U1 0 U2 2 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD AUG PY 1995 VL 66 IS 8 BP 745 EP 750 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RK941 UT WOS:A1995RK94100005 PM 7487807 ER PT J AU ROGERS, BC AF ROGERS, BC TI MEMORIES OF THE CENTENNIAL NURSING CLASS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article RP ROGERS, BC (reprint author), IMA,SGN,HQ AETC,RANDOLPH AFB,TX 78150, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD AUG PY 1995 VL 66 IS 8 BP 801 EP 802 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RK941 UT WOS:A1995RK94100015 ER PT J AU WONG, MT DOLAN, MJ LATTUADA, CP REGNERY, RL GARCIA, ML MOKULIS, EC LABARRE, RC ASCHER, DP DELMAR, JA KELLY, JW LEIGH, DR MCRAE, AC REED, JB SMITH, RE MELCHER, GP AF WONG, MT DOLAN, MJ LATTUADA, CP REGNERY, RL GARCIA, ML MOKULIS, EC LABARRE, RC ASCHER, DP DELMAR, JA KELLY, JW LEIGH, DR MCRAE, AC REED, JB SMITH, RE MELCHER, GP TI NEURORETINITIS, ASEPTIC-MENINGITIS, AND LYMPHADENITIS ASSOCIATED WITH BARTONELLA (ROCHALIMAEA) HENSELAE INFECTION IN IMMUNOCOMPETENT PATIENTS AND PATIENTS INFECTED WITH HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 SO CLINICAL INFECTIOUS DISEASES LA English DT Article ID CAT-SCRATCH DISEASE; BACILLARY ANGIOMATOSIS; THERAPY; FEVER AB Bartonella (Rochalimaea) henselae causes a variety of diseases, including bacillary angiomatosis, peliosis hepatis, lymphadenitis, aseptic meningitis with bacteremia, and cat-scratch disease (CSD). Cases of B. henselae-related disease were collected from September 1991 through November 1993. Patients with suspected CSD, unexplained fever and lymphadenitis, or suspected B. henselae infection who were seen in the Infectious Diseases Clinic at Wilford Hall Medical Center (Lackland Air Force Base, TX) underwent physical and laboratory examinations. In addition to three previously described cases, 23 patients with R. henselae-related infection were identified. The patients included 19 immunocompetent individuals presenting with lymphadenitis (11), stellate neuroretinitis (5), Parinaud's oculoglandular syndrome with retinitis (1), chronic fatigue syndrome-like disease (1), and microbiologically proven adenitis without the presence of immunofluorescent antibodies to B, henselae (1) and four patients infected with human immunodeficiency virus type 1 presenting with isolated lymphadenitis (1), diffuse upper-extremity adenitis (1), neuroretinitis (1), and aseptic meningitis (1), A couple with neuroretinitis and their pet cat, a persistently fatigued patient, and a patient with Parinaud's oculoglandular syndrome were shown to have bacteremia, Tissue cultures were positive for B. henselae in three recent cases of adenitis, Twenty-two patients were exposed to cats, This series further demonstrates the similarities between B. henselae-related diseases and CSD and identifies several new syndromes due to B. henselae. C1 WILFORD HALL USAF MED CTR,DEPT INFECT DIS,PSMI,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT OPHTHALMOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. BROOKE ARMY MED CTR,FT SAM HOUSTON,TX 78234. FRANCIS SCOTT KEY MED CTR,INFECT DIS SECT,SCOTT AFB,MO. SAN DIEGO NAVAL AIR STN,SAN DIEGO NAVAL HOSP,SAN DIEGO,CA. KEESLER MED CTR,DEPT INTERNAL MED,KEESLER AFB,MS. CTR DIS CONTROL & PREVENT,VIRAL & RICKETTSIAL ZOONOSES BRANCH,ATLANTA,GA 30341. NR 27 TC 103 Z9 105 U1 2 U2 4 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD AUG PY 1995 VL 21 IS 2 BP 352 EP 360 PG 9 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RM817 UT WOS:A1995RM81700015 PM 8562744 ER PT J AU SLAWSKI, DP WEST, C AF SLAWSKI, DP WEST, C TI MAISONNEUVE FRACTURE WITH AN ASSOCIATED DISTAL FIBULAR FRACTURE - A CASE-REPORT SO CLINICAL ORTHOPAEDICS AND RELATED RESEARCH LA English DT Note ID ANKLE INJURIES; DISLOCATION AB A 46-year-old woman had a severe torsional injury to her left leg, Admission radiographs shelved a proximal Maisonneuve-type fibular fracture with an associated distal fibular fracture at the level of the distal tibiofibular syndesmosis, A complete syndesmotic disruption, proximal and distal to the distal fibular fracture, was verified at surgical exploration as was a complete deltoid ligament tear, Management consisted of internal fixation of the distal fibular fracture and placement of a syndesmotic screw At 1-year followup, the patient reported normal ankle function, This case represents an unusual, and perhaps previously undescribed, variant of the so-called Maison-neuve fracture, The need for careful evaluation of the entire leg in torsional injuries of the ankle is underscored by the injury presented. C1 USAF,MED CTR,MED CORPS,DEPT ORTHOPED,MED GRP 375,SCOTT AFB,IL. WASHINGTON UNIV,MALLINCKRODT INST RADIOL,ST LOUIS,MO. NR 15 TC 9 Z9 9 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0009-921X J9 CLIN ORTHOP RELAT R JI Clin. Orthop. Rel. Res. PD AUG PY 1995 IS 317 BP 193 EP 198 PG 6 WC Orthopedics; Surgery SC Orthopedics; Surgery GA RP273 UT WOS:A1995RP27300028 PM 7671478 ER PT J AU BOYUM, KE PACHTER, M HOUPIS, CH AF BOYUM, KE PACHTER, M HOUPIS, CH TI HIGH-ANGLE OF ATTACK VELOCITY VECTOR ROLLS SO CONTROL ENGINEERING PRACTICE LA English DT Article; Proceedings Paper CT 13th IFAC Symposium on Automatic Control in Aerospace (AEROSPACE 94) CY 1994 CL PALO ALTO, CA SP Int Federat Automat Control DE FLIGHT CONTROL; ROBUST CONTROL AB This paper presents the design of a flight control system for performing the velocity vector roll maneuver at high angles of attack. A six-degree-of-freedom model is developed, and the multiple-input multiple-output Quantitative Feedback Theory (QFT) robust control design method is used to treat both the inherent system nonlinearities and the variability in the system parameters due to changes in flight condition, as structured uncertainty. The development of a weighting matrix aids in this design process, yielding a three-axis rate-commanded inner-loop control system. Nonlinear six-degree-of-freedom closed-loop simulations demonstrate the successful initiation and arrest of the maneuver. RP BOYUM, KE (reprint author), USAF,INST TECHNOL ENG,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 5 Z9 5 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0967-0661 J9 CONTROL ENG PRACT JI Control Eng. Practice PD AUG PY 1995 VL 3 IS 8 BP 1087 EP 1093 DI 10.1016/0967-0661(95)00101-Y PG 7 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA RM833 UT WOS:A1995RM83300005 ER PT J AU XIA, XG SUTER, BW AF XIA, XG SUTER, BW TI ON VECTOR KARHUNEN-LOEVE TRANSFORMS AND OPTIMAL VECTOR TRANSFORMS SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY LA English DT Letter AB In this letter, we first prove that the vector Karhunen-Loeve (VKL) transform for any finite many vector-valued signal, x(1),...,x(L), exists. The VKL transform is equivalent to the scalar KL transform for the scalar-valued signal X = (x(1)(T),...,x(L)(T))(T). Based on VKL transforms, we provide a necessary and sufficient condition for the existence of the optimal vector transforms (unitary). With the condition, one can see that the optimal unitary vector transforms do not exist in most cases, and therefore needs to use suboptimal unitary vector transforms. We then prove that the optimal nonunitary vector transform for x(1),...,x(L) exists when all eigenvalues of the correlation matrix of the signal X are nonzero. We formulate the optimal vector transforms via the VKL transforms. RP XIA, XG (reprint author), USAF, INST TECHNOL, DEPT ELECT & COMP ENGN, WRIGHT PATTERSON AFB, OH 45433 USA. NR 10 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1051-8215 EI 1558-2205 J9 IEEE T CIRC SYST VID JI IEEE Trans. Circuits Syst. Video Technol. PD AUG PY 1995 VL 5 IS 4 BP 372 EP 374 DI 10.1109/76.465094 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA RV858 UT WOS:A1995RV85800014 ER PT J AU LOUGHRY, TA GURBAXANI, SH AF LOUGHRY, TA GURBAXANI, SH TI THE EFFECTS OF INTRINSIC TEST FIXTURE ISOLATION ON MATERIAL SHIELDING EFFECTIVENESS MEASUREMENTS USING NESTED MODE-STIRRED CHAMBERS SO IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY LA English DT Note AB This paper evaluates the effects of test fixture isolation when using nested mode-stir chambers for conducting electromagnetic shielding measurements. The nested chamber technique is used by both government and industry to evaluate the electromagnetic attenuating properties of materials as varied as infrared sensor windows to the composites used in the hulls of new ships, Two cases are considered: 1) The test aperture provides little inherent isolation between the two chambers, and 2) the aperture provides reasonably good isolation, It is shown that in the former case, data taken in this fashion can exhibit significant deviation from the latter. A correction factor for the former case is developed. C1 UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. RP LOUGHRY, TA (reprint author), USAF,PHILLIPS LAB,WSM,3550 ABERDEEN AVE,KIRTLAND AFB,NM 87117, USA. NR 4 TC 14 Z9 15 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9375 J9 IEEE T ELECTROMAGN C JI IEEE Trans. Electromagn. Compat. PD AUG PY 1995 VL 37 IS 3 BP 449 EP 452 DI 10.1109/15.406535 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RQ503 UT WOS:A1995RQ50300014 ER PT J AU TAYLOR, CD LANGDON, SL GUTIERREZ, SJ AF TAYLOR, CD LANGDON, SL GUTIERREZ, SJ TI ON THE WIDE-BAND CW ILLUMINATION OF LARGE-SCALE SYSTEMS .1. THE ELLIPTICUS ILLUMINATOR SO IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY LA English DT Note AB The Phillips Laboratory has recently designed and constructed a continuous wave illuminator for studying the responses of large-scale systems subject to electromagnetic stresses. The illumination is developed by an electrically large, ferrite-loaded elliptical-loop configuration that is oriented over the system being studied. One half of the loop is completed by its image in the ground plane. With the loop being driven from its apex, the electric and magnetic fields are substantially horizontal, corresponding to illumination from an overhead source. Data are presented for the illumination field and the response of an aircraft, recorded at the Phillips Laboratory large electromagnetic system level illuminator (LESLI) research facility. RP TAYLOR, CD (reprint author), USAF,PHILLIPS LAB,WSM,KIRTLAND AFB,NM 87117, USA. NR 9 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9375 J9 IEEE T ELECTROMAGN C JI IEEE Trans. Electromagn. Compat. PD AUG PY 1995 VL 37 IS 3 BP 473 EP 477 DI 10.1109/15.406540 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RQ503 UT WOS:A1995RQ50300019 ER PT J AU DESALVO, GC QUACH, TK BOZADA, CA DETTMER, RW NAKANO, K GILLESPIE, JK VIA, GD EBEL, JL HAVASY, CK AF DESALVO, GC QUACH, TK BOZADA, CA DETTMER, RW NAKANO, K GILLESPIE, JK VIA, GD EBEL, JL HAVASY, CK TI SIMPLIFIED OHMIC AND SCHOTTKY CONTACT FORMATION FOR FIELD-EFFECT TRANSISTORS USING THE SINGLE-LAYER INTEGRATED METAL FIELD-EFFECT TRANSISTOR (SLIMFET) PROCESS SO IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING LA English DT Article ID MOLECULAR-BEAM EPITAXY; CAP LAYER; GAAS; INGAAS; RESISTANCE; HEMT AB A new III-V semiconductor device fabrication process for GaAs-based field effect transistors (FET) is presented which uses a single lithographic process and metal deposition step to form both the ohmic drain/source contacts and the Schottky gate contact concurrently, This single layer integrated metal FET (SLIMFET) process simplifies the fabrication process by eliminating an additional lithographic step for gate definition, a separate gate metallization step, and thermal annealing for ohmic contact formation. The SLIMFET process requires a FET structure which incorporates a compositionally graded InxGa1-xAs cap layer to form low resistance, nonalloyed ohmic contacts using standard Schottky metals, The SLIMFET process also uses a Si3N4 mask to provide selective removal of the InGaAs ohmic layers from the gate region prior to metallization without requiring an additional lithographic step, GaAs MESFET devices were fabricated using this new SLIMFET process which achieved DC and RF performance comparable to GaAs MESFET's fabricated by conventional methods. RP DESALVO, GC (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,DIV RES,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 1 Z9 1 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0894-6507 J9 IEEE T SEMICONDUCT M JI IEEE Trans. Semicond. Manuf. PD AUG PY 1995 VL 8 IS 3 BP 314 EP 318 DI 10.1109/66.401007 PG 5 WC Engineering, Manufacturing; Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RM524 UT WOS:A1995RM52400012 ER PT J AU PERRAM, GP AF PERRAM, GP TI APPROXIMATE ANALYTIC SOLUTION FOR THE DISSOCIATION OF MOLECULAR-IODINE IN THE PRESENCE OF SINGLET OXYGEN SO INTERNATIONAL JOURNAL OF CHEMICAL KINETICS LA English DT Article ID TRANSFER LASER; I-2; KINETICS AB A computational study including sensitivity, nondimensional, and steady-state analyses of the gas-phase kinetics associated with Chemical Oxygen-Iodine Lasers (COIL) was performed to develop a simplified kinetic model and assess kinetic limitations to laser performance. A minimal set of 13 reactions is developed that adequately describes the time evolution of the major chemical constituents of a COIL device. A characteristic time for the dissociation of molecular iodine by singlet oxygen is established in terms of iodine fraction, water content, yield of singlet oxygen, and rate parameters. Finally, an approximate analytic solution to the iodine dissociation problem is established for a broad range of reagent concentrations. The current study is Limited in applicability due to the exclusion of chemical heat release and reactive mixing phenomenon. (C) 1995 John Wiley and Sons, Inc. RP PERRAM, GP (reprint author), USAF,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433, USA. OI Perram, Glen/0000-0002-4417-3929 NR 38 TC 64 Z9 66 U1 0 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0538-8066 J9 INT J CHEM KINET JI Int. J. Chem. Kinet. PD AUG PY 1995 VL 27 IS 8 BP 817 EP 828 DI 10.1002/kin.550270808 PG 12 WC Chemistry, Physical SC Chemistry GA RH712 UT WOS:A1995RH71200007 ER PT J AU KAW, AK KUNCHITHAPATHAM, S PAGANO, NJ AF KAW, AK KUNCHITHAPATHAM, S PAGANO, NJ TI THE STRESS-FIELD IN A CRACKED BRITTLE-MATRIX COMPOSITE CYLINDER WITH A FRICTIONAL INTERFACE SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article ID FIBER AB The effect of a frictional interface on the response of a unidirectional ceramic matrix composite under a remote axial tensile strain and a temperature change is studied. The geometry of the composite is approximated by a concentric cylinder model with an annular crack in the axial plane of the matrix. The fiber-matrix interface follows the Coulomb friction law. On applying the boundary and the interface continuity conditions, the solution is obtained in terms of coupled integral equations and inequality conditions. The extent of the interfacial damage and the stress fields in the fiber and the matrix along the interface are studied for a SiC/CAS composite system as a function of the coefficient of friction, temperature change, and remote uniform axial strain. These results are also compared with a shear lag analysis model for an identical geometry and loading. C1 WRIGHT LAB,MLBM,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP KAW, AK (reprint author), UNIV S FLORIDA,DEPT MECH ENGN,TAMPA,FL 33620, USA. NR 21 TC 4 Z9 4 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PD AUG PY 1995 VL 32 IS 15 BP 2127 EP 2154 DI 10.1016/0020-7683(94)00254-T PG 28 WC Mechanics SC Mechanics GA RE679 UT WOS:A1995RE67900001 ER PT J AU TOTH, CA CAIN, CP STEIN, CD NOOJIN, GD STOLARSKI, DJ ZUCLICH, JA ROACH, WP AF TOTH, CA CAIN, CP STEIN, CD NOOJIN, GD STOLARSKI, DJ ZUCLICH, JA ROACH, WP TI RETINAL EFFECTS OF ULTRASHORT LASER-PULSES IN THE RABBIT EYE SO INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE LA English DT Article DE FEMTOSECOND LASER; FLUORESCEIN ANGIOGRAPHY; LASER INJURY; MINIMUM VISIBLE LESION; RETINA; RETINAL HEMORRHAGE ID THRESHOLDS; RADIATION AB Purpose. To evaluate the effects of ultrashort laser pulses from femtoseconds to nanoseconds on the retinas of live rabbit eyes and to determine the energy requirements for visible lesion development. Methods. The retinal effects of laser exposures were examined for laser exposures with pulsewidths ranging from 4 ns to 90 fs, with visible wavelengths of 532 nm for durations >5 ps and 580 nm for durations <5 ps. The authors examined and scored all laser impact sites in the retina ophthalmoscopically-with fundus photography and with fluorescein angiography-to identify evidence of visible laser effects. Results. The laser energy required for retinal minimal visible lesions was found to be slightly less for pulsewidths <5 ps and varied from 5 mu J at 4 ns to 1.1 mu J at 90 fs for the 1-hour ophthalmoscopic reading. Lesions from higher energy pulses (7 to 120 mu J) were examined at all pulsewidths. For 90-fs high-energy pulse delivery, an increased intensify of retinal lesions and the development of several subretinal hemorrhages were demonstrated at peak energies of 30 mu J. Fluorescein angiography was found to be much more sensitive as an indicator of retinal damage for both femtosecond pulsewidths. Conclusions. The low energies required for visible lesion production in live rabbit eyes raise new questions surrounding ultrashort pulse propagation in ocular media, energy deposition at the retina, and mechanisms limiting retinal damage from ultrashort laser pulses. C1 ANALYT SCI CORP,SAN ANTONIO,TX. ARMSTRONG LAB,DIV OPT RADIAT,BROOKS AFB,TX. RP TOTH, CA (reprint author), DUKE UNIV,CTR EYE,ERWIN RD,DURHAM,NC 27710, USA. RI toth, cynthia/F-5614-2011 NR 18 TC 16 Z9 18 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0146-0404 J9 INVEST OPHTH VIS SCI JI Invest. Ophthalmol. Vis. Sci. PD AUG PY 1995 VL 36 IS 9 BP 1910 EP 1917 PG 8 WC Ophthalmology SC Ophthalmology GA RN213 UT WOS:A1995RN21300020 PM 7635664 ER PT J AU MCCULLOUGH, JS HARMON, A MARTIN, JJ MARTIN, JJ HARRIS, MT LARKIN, JJ AF MCCULLOUGH, JS HARMON, A MARTIN, JJ MARTIN, JJ HARRIS, MT LARKIN, JJ TI LOW-TEMPERATURE PHOTOCHROMIC RESPONSE OF PHOSPHORUS-DOPED BISMUTH SILICON-OXIDE SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID GERMANIUM OXIDE; DYNAMIC INTERCHANGE; BI12SIO20 CRYSTALS; ALPHA-QUARTZ; 3 STATES; BI12GEO20; PURE AB Phosphorus is one of several dopants that electronically compensate the native deep donor responsible for the yellow coloration observed in bismuth silicon oxide (BSO). Low-temperature optical absorption measurements of a series of Czochralski-grown P-doped BSO crystals show that similar to 0.1-0.15 at. % P is needed in the sample to fully remove the yellow coloration. The absorption cutoff in the fully compensated P-doped sample was at 3.2 eV while compensated Al- and Ga-doped samples cutoff at 3.35 eV. Excitation at 10-15 K with near band-edge light produces photochromic absorption bands. In the lightly-doped (partially bleached) samples these bands were identical to those observed in undoped BSO. In the fully bleached sample a new spectrum was observed. Its major contribution was a band centered near 1.8 eV with a weaker absorption in the blue-green. By comparison with the spectra observed in undoped and in Al-doped material before and after photoexcitation it is believed that the 1.8 eV band is due to the [PO4](-) center and that the broad 2.45 eV band observed in Al- and Ga-doped BSO is due to the [BiO4](0) center. (C) 1995 American Institute of Physics. C1 USAF, ROME LAB, ERXE, BEDFORD, MA 01731 USA. RP OKLAHOMA STATE UNIV, DEPT PHYS, STILLWATER, OK 74078 USA. NR 29 TC 6 Z9 6 U1 0 U2 1 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 AUG 1 PY 1995 VL 78 IS 3 BP 2010 EP 2014 DI 10.1063/1.360176 PG 5 WC Physics, Applied SC Physics GA RK576 UT WOS:A1995RK57600099 ER PT J AU YU, PW PARK, Y SKOWRONSKI, M TIMMONS, ML AF YU, PW PARK, Y SKOWRONSKI, M TIMMONS, ML TI DEEP-CENTER OXYGEN-RELATED PHOTOLUMINESCENCE IN GAAS DOPED WITH DIMETHYLALUMINUM METHOXIDE DURING ORGANOMETALLIC VAPOR-PHASE EPITAXY SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MOLECULAR-BEAM EPITAXY; SEMI-INSULATING GAAS; FINE-STRUCTURE; DX CENTER; ALXGA1-XAS; LUMINESCENCE; EMISSION; LEVEL; BAND; EXCITATION AB Infrared oxygen-related photoluminescence measurements of GaAs epilayers grown by organometallic vapor phase epitaxy (OMVPE) and intentionally doped with dimethylaluminum methoxide (DMALMO) are reported. The photoluminescence emissions at 1.08, 0.95, 0.81, and 0.62 eV are detected. The centers responsible for the emissions at 0.81 and 0.62 eV are tentatively attributed to Al-O-Ga and Al-O-Al, respectively, based on correlation with layer growth conditions. The growth parameters lead to information on the number of nearest-neighbor aluminum associated with oxygen. The Al-O-Ga center responsible for the 0.81 emission is also studied for AlxGa1-xAs(x=0.05-0.9) layers grown by OMVPE without DMALMO. The 0.81 eV emission is attributed to the transition from the conduction band to the Al-O-Ga center. The center shows the lattice relaxation exemplified by the Franck-Condon shift of 0.15 eV. The thermal ionization energy of this acceptor is determined to be 0.56 eV above the valence band. (C) 1995 American Institute of Physics. C1 CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213. RES TRIANGLE INST,DEPT SEMICOND MAT RES,RES TRIANGLE PK,NC 27709. RP YU, PW (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE WL MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. RI Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 33 TC 0 Z9 0 U1 0 U2 4 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 1 PY 1995 VL 78 IS 3 BP 2015 EP 2021 DI 10.1063/1.360177 PG 7 WC Physics, Applied SC Physics GA RK576 UT WOS:A1995RK57600100 ER PT J AU HOFF, J HE, X ERDTMANN, M BIGAN, E RAZEGHI, M BROWN, GJ AF HOFF, J HE, X ERDTMANN, M BIGAN, E RAZEGHI, M BROWN, GJ TI P-DOPED GAAS/GA0.51IN0.49P QUANTUM-WELL INTERSUB-BAND PHOTODETECTORS SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID INFRARED PHOTODETECTORS; ABSORPTION; SUPERLATTICES AB Lattice-matched p-doped GaAs-Ga0.51In0.49P quantum well intersub-band photodetectors with three different well widths have been grown on GaAs substrates by metal-organic chemical-vapor deposition and fabricated into mesa structures. The photoresponse cutoff wavelength varies between 3.5 and 5.5 mu m by decreasing the well width from 50 down to 25 Angstrom. Dark current measurements as a function of temperature reveal activation energies for thermionic emission that closely correspond to measured cutoff wavelengths. Experimental results are in reasonable agreement with Kronig-Penney calculations. (C) 1995 American Institute of Physics. C1 WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433. RP HOFF, J (reprint author), NORTHWESTERN UNIV,DEPT ELECT ENGN & COMP SCI,CTR QUANTUM DEVICES,EVANSTON,IL 60208, USA. RI Razeghi, Manijeh/B-7265-2009 NR 9 TC 5 Z9 6 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD AUG 1 PY 1995 VL 78 IS 3 BP 2126 EP 2128 DI 10.1063/1.360194 PG 3 WC Physics, Applied SC Physics GA RK576 UT WOS:A1995RK57600118 ER PT J AU MERO, NP MOTOWIDLO, SJ AF MERO, NP MOTOWIDLO, SJ TI EFFECTS OF RATER ACCOUNTABILITY ON THE ACCURACY AND THE FAVORABILITY OF PERFORMANCE RATINGS SO JOURNAL OF APPLIED PSYCHOLOGY LA English DT Article ID APPRAISAL; COMPLEXITY; JUDGMENT; PURPOSE; ERRORS AB The authors tested the effects of holding raters accountable for their performance ratings on the accuracy and the favorability of those ratings. Undergraduate research participants (N = 247) completed an inbasket exercise and observed a videotaped simulation during 2 sessions over a 2-week period. The simulation presented performance information on 4 simulated subordinates portrayed through videotaped vignettes. True performance scores were manipulated by varying the proportion of positive and negative performance vignettes presented for each subordinate. Participants who were made to feel accountable by having to justify their ratings to the experimenter in writing rated their simulated subordinates more accurately. In another experimental condition, accountable raters who were told their subordinates' previous performance ratings were too low rated their subordinates more favorably than did raters in the same experimental condition who were not accountable. C1 UNIV FLORIDA,DEPT MANAGEMENT,GAINESVILLE,FL 32611. RP MERO, NP (reprint author), USAF ACAD,DEPT MANAGEMENT,2354 FAIRCHILD DR,SUITE 6H94,COLORADO SPRINGS,CO 80840, USA. NR 29 TC 72 Z9 72 U1 2 U2 11 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0021-9010 J9 J APPL PSYCHOL JI J. Appl. Psychol. PD AUG PY 1995 VL 80 IS 4 BP 517 EP 524 DI 10.1037//0021-9010.80.4.517 PG 8 WC Psychology, Applied; Management SC Psychology; Business & Economics GA RN700 UT WOS:A1995RN70000008 ER PT J AU SYLVIA, V HELM, JS DEAN, DD LU, Y SCHWARTZ, Z BOYAN, BD AF SYLVIA, V HELM, JS DEAN, DD LU, Y SCHWARTZ, Z BOYAN, BD TI MECHANISM OF PROTEIN-KINASE-C ACTIVATION BY 24,25-(OH)2D3 IN RESTING ZONE CHONDROCYTES SO JOURNAL OF BONE AND MINERAL RESEARCH LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78246. HEBREW UNIV JERUSALEM,IL-91010 JERUSALEM,ISRAEL. NR 0 TC 0 Z9 0 U1 0 U2 1 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0884-0431 J9 J BONE MINER RES JI J. Bone Miner. Res. PD AUG PY 1995 VL 10 SU 1 BP S395 EP S395 PG 1 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA RN484 UT WOS:A1995RN48401023 ER PT J AU RUBEY, WA STRIEBICH, RC TISSANDIER, MD TIREY, DA AF RUBEY, WA STRIEBICH, RC TISSANDIER, MD TIREY, DA TI GAS-CHROMATOGRAPHIC MEASUREMENT OF TRACE OXYGEN AND OTHER DISSOLVED-GASES IN THERMALLY STRESSED JET FUEL SO JOURNAL OF CHROMATOGRAPHIC SCIENCE LA English DT Article ID GC C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP RUBEY, WA (reprint author), UNIV DAYTON,RES INST,ENVIRONM SCI & ENGN LAB,300 COLL PK,DAYTON,OH 45469, USA. NR 22 TC 23 Z9 23 U1 0 U2 2 PU PRESTON PUBLICATIONS INC PI NILES PA 7800 MERRIMAC AVE PO BOX 48312, NILES, IL 60648 SN 0021-9665 J9 J CHROMATOGR SCI JI J. Chromatogr. Sci. PD AUG PY 1995 VL 33 IS 8 BP 433 EP 437 PG 5 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA RM100 UT WOS:A1995RM10000003 ER PT J AU DELVECCHIO, VG PETROZIELLO, JM GRESS, MJ MCCLESKEY, FK MELCHER, GP CROUCH, HK LUPSKI, JR AF DELVECCHIO, VG PETROZIELLO, JM GRESS, MJ MCCLESKEY, FK MELCHER, GP CROUCH, HK LUPSKI, JR TI MOLECULAR GENOTYPING OF METHICILLIN-RESISTANT STAPHYLOCOCCUS-AUREUS VIA FLUOROPHORE-ENHANCED REPETITIVE-SEQUENCE PCR SO JOURNAL OF CLINICAL MICROBIOLOGY LA English DT Article ID FIELD GEL-ELECTROPHORESIS; POLYMERASE CHAIN-REACTION; DNA-SEQUENCES; PLASMID ANALYSIS; STRAINS; PROTEIN; ENZYMES; GENOMES AB Methicillin resistance in Staphylococcus aureus is a frequent cause of nosocomial and community-acquired infections. Accurate, rapid epidemiologic typing is crucial to the identification of the source and spread of infectious disease and could provide detailed information on the generation of methicillin-resistant S. aureus (MRSA) strains. The high degree of genetic relatedness of MESA strains has precluded the use of more conventional methods of genetic fingerprinting. A rapid DNA fingerprinting method that exploits PCR amplification from a DNA repeat sequence in MRSA is described. The random chromosomal distribution of this repeat sequence provides an ideal target for detecting DNA fragment patterns specific to individual MRSA strains. Two PCR fingerprinting methods which use an oligonucleotide primer based on a repetitive sequence found in Mycoplasma pneumoniae are presented. The repetitive element sequence-based PCR (rep-PCR) and fluorophore-enhanced rep-PCR (FERP) can identify epidemic strains among background MRSA. The combination of oligonucleotide primers labeled with different fluorescent dyes allowed simultaneous FERP fingerprinting and mecA gene detection. Eight different fingerprint patterns were observed in MRSA strains collected from different sources. These techniques provide a rapid discriminatory means of molecular epidemiologic typing of MESA involved in nosocomial infections. C1 ARMSTRONG LAB,DIV EPIDEMIOL RES,BACTERIOL LAB,BROOKS AFB,TX 78235. WILFORD HALL USAF MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236. BAYLOR COLL MED,DEPT MOLEC & HUMAN GENET,HOUSTON,TX 77030. RP DELVECCHIO, VG (reprint author), UNIV SCRANTON,INST MOLEC BIOL,SCRANTON,PA 18510, USA. NR 23 TC 110 Z9 115 U1 0 U2 1 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0095-1137 J9 J CLIN MICROBIOL JI J. Clin. Microbiol. PD AUG PY 1995 VL 33 IS 8 BP 2141 EP 2144 PG 4 WC Microbiology SC Microbiology GA RJ052 UT WOS:A1995RJ05200033 PM 7559964 ER PT J AU OKEEFE, MJ GRANT, JT SOLOMON, JS AF OKEEFE, MJ GRANT, JT SOLOMON, JS TI MAGNETRON SPUTTER-DEPOSITION OF A-15 AND BCC CRYSTAL-STRUCTURE TUNGSTEN THIN-FILMS SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT Symposium on Defect Structure, Morphology and Properties of Deposits, at the 1994 TMS Fall Meeting CY OCT 04-06, 1994 CL ROSEMONT, IL SP Min, Met & Mat Soc, SMD Non Ferrous Met Committ, EMPMD, Electron Packaging & Interconnect Mat Comm DE BODY CENTERED CUBIC (BCC); SPUTTERING; THIN FILMS; TUNGSTEN ID STRESS AB The effect of processing parameters on the crystal structure and electrical resistivity of magnetron sputter deposited tungsten thin films was investigated. Formation of body centered cubic (bcc) W was favored when the concentration of impurity oxygen atoms in the films was <5 at.% while the formation of A-15 W was favored between 6 and 10 at.% oxygen. A transition from A-15 W films to bcc W films occurred as the oxygen was removed from the deposition chamber by presputtering the target for extended periods of time. The binding energies of the W atoms in A-15 and bcc W films are similar, as is the binding energy of the O atoms in the two different crystal structures, indicating that the oxygen is not present as a tungsten oxide compound. The resistivity of A-15 W films is always higher than the resistivity of bcc W films due to the increased oxygen concentration and small grain size of the A-15 films. However, the sputter deposition pressure is found to have a greater effect on resistivity. This is attributed to the formation of cracks in the film. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP OKEEFE, MJ (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 22 TC 22 Z9 23 U1 2 U2 7 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD AUG PY 1995 VL 24 IS 8 BP 961 EP 967 DI 10.1007/BF02652968 PG 7 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA RN054 UT WOS:A1995RN05400008 ER PT J AU BYRD, LW HANEY, MA AF BYRD, LW HANEY, MA TI CONDENSATION HEAT-TRANSFER ON VERTICAL AXIS, AXISYMMETRICAL, ROTATING SURFACES SO JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME LA English DT Note RP BYRD, LW (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0022-1481 J9 J HEAT TRANS-T ASME JI J. Heat Transf.-Trans. ASME PD AUG PY 1995 VL 117 IS 3 BP 782 EP 784 DI 10.1115/1.2822650 PG 3 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA RX547 UT WOS:A1995RX54700037 ER PT J AU PIEPMEIER, E HAMMETTSTABLER, C PRICE, M PETERS, J KEMPER, G DAVIS, M AF PIEPMEIER, E HAMMETTSTABLER, C PRICE, M PETERS, J KEMPER, G DAVIS, M TI MYOSITIS AND FASCIITIS ASSOCIATED WITH GROUP-A BETA-HEMOLYTIC STREPTOCOCCAL INFECTIONS - DEVELOPMENT OF A RABBIT MODEL SO JOURNAL OF LABORATORY AND CLINICAL MEDICINE LA English DT Article ID SHOCK-LIKE SYNDROME; ANTI-INFLAMMATORY DRUGS; PYROGENIC EXOTOXIN-A; SCARLET FEVER TOXIN; NECROTIZING FASCIITIS; PYOMYOSITIS; PROTEIN AB Group A streptococci produce a variety of clinical symptoms ranging from minor pharyngeal infections to life-threatening soft-tissue disease. A rabbit model is described for Induction of myonecrosis and fasciitis with group A beta-hemolytic streptococci. Group A streptococcal infections have shown remarkable virulence in recent years, resulting in severe local tissue destruction and life-threatening toxicity. After subcutaneous injection into the thigh of 20 ml broth containing 10(5) to 10(9) cfu/ml, initial soft tissue infection rapidly progressed to rhabdomyolysis. The response of the rabbits to the infection was consistent with the human response. C1 ARMSTRONG LAB,DIV DRUG TESTING,BROOKS AFB,TX. ARMSTRONG LAB,DIV HYPERBAR MED,BROOKS AFB,TX. WILFORD HALL USAF MED CTR,DEPT PATHOL,MICROBIOL BRANCH,LACKLAND AFB,TX 78236. RP PIEPMEIER, E (reprint author), UNIV S CAROLINA,COLL PHARM,COLUMBIA,SC 29210, USA. NR 26 TC 9 Z9 9 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-2143 J9 J LAB CLIN MED JI J. Lab. Clin. Med. PD AUG PY 1995 VL 126 IS 2 BP 137 EP 143 PG 7 WC Medical Laboratory Technology; Medicine, General & Internal; Medicine, Research & Experimental SC Medical Laboratory Technology; General & Internal Medicine; Research & Experimental Medicine GA RP291 UT WOS:A1995RP29100005 PM 7636386 ER PT J AU MINARDI, MJ INGRAM, MA AF MINARDI, MJ INGRAM, MA TI ADAPTIVE CROSSTALK CANCELLATION AND LASER FREQUENCY DRIFT COMPENSATION IN DENSE WDM NETWORKS SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID TRANSMISSION; FILTER AB Two variations of the LMS algorithm are proposed to cancel received linear crosstalk in dense WDM networks. Analysis and simulations show that with the addition of a few photodetectors, channel spacing requirements can be reduced by over 50 percent. Simulations using a demultiplexer with Gaussian bandpass characteristics show that a 2.5 dB signal-to-crosstalk-plus-noise ratio can be increased to over 35 dB. The decision-directed algorithm will work with OOK data or any intensity modulation scheme which uses the absence of light as one symbol. The decision directed algorithm makes assumptions on the desired laser frequency so it can accommodate only limited laser drift. A second cancellation algorithm uses pilot tones added to each laser signal in order to cancel the crosstalk. It will work with analog or digital intensity-modulated data and will automatically configure itself to account for laser drift. Both algorithms are blind in that they do not require training sequences for initialization, Analysis shows that weights derived from pilot tones are nearly optimum for canceling crosstalk for the data, Simulations of both algorithms are presented. Finally, both algorithms are shown to be capable of canceling nonlinear beating terms. C1 GEORGIA INST TECHNOL,SCH ELECT & COMP ENGN,ATLANTA,GA 30332. RP MINARDI, MJ (reprint author), USAF,WRIGHT LAB,RADAR BRANCH,AARM,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 4 Z9 4 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD AUG PY 1995 VL 13 IS 8 BP 1624 EP 1635 DI 10.1109/50.405304 PG 12 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RQ550 UT WOS:A1995RQ55000004 ER PT J AU SCHELONKA, RL YODER, BA HALL, RB TRIPPETT, TM LOUDER, DS HICKMAN, JR GUERRA, CG AF SCHELONKA, RL YODER, BA HALL, RB TRIPPETT, TM LOUDER, DS HICKMAN, JR GUERRA, CG TI DIFFERENTIATION OF SEGMENTED AND BAND NEUTROPHILS DURING THE EARLY NEWBORN PERIOD SO JOURNAL OF PEDIATRICS LA English DT Note ID DIAGNOSIS; INFANTS; SEPSIS AB This prospective study evaluated the degree of inter-reader variability in the identification of segmented and band neutrophils from blood smears of full-term, healthy neonates, Wide inter-reader differences of band neutrophil identification and the immature to total neutrophil ratio were observed, Because of poor correlation between evaluators of the same blood smear, the clinical utility of the manual differential leukocyte count in the evaluation of neonates is limited. C1 WILFORD HALL USAF MED CTR, DEPT PATHOL, LACKLAND AFB, TX 78236 USA. RP SCHELONKA, RL (reprint author), WILFORD HALL USAF MED CTR, PSP, DEPT PEDIAT, 2200 BERGQUIST DR, STE 1, LACKLAND AFB, TX 78236 USA. NR 12 TC 15 Z9 15 U1 0 U2 3 PU MOSBY-ELSEVIER PI NEW YORK PA 360 PARK AVENUE SOUTH, NEW YORK, NY 10010-1710 USA SN 0022-3476 EI 1097-6833 J9 J PEDIATR-US JI J. Pediatr. PD AUG PY 1995 VL 127 IS 2 BP 298 EP 300 DI 10.1016/S0022-3476(95)70314-4 PG 3 WC Pediatrics SC Pediatrics GA RN497 UT WOS:A1995RN49700023 PM 7636659 ER PT J AU SAUNDERS, TR HANSEN, NA AF SAUNDERS, TR HANSEN, NA TI SYNTHETIC CASTING TAPE AS A FACIAL IMPRESSION TRAY MATERIAL SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article AB A procedure is described that uses thermoplastic synthetic casting tape for fabrication of facial impression trays. Once used, these trays can be disinfected without degradation of the tray material, which allows for storage and later use. C1 USAF,DENT CORPS,PROSTHODONT SERV,BARKSDALE AFB,LA. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 4 TC 3 Z9 3 U1 0 U2 1 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD AUG PY 1995 VL 74 IS 2 BP 169 EP 170 DI 10.1016/S0022-3913(05)80181-7 PG 2 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RL803 UT WOS:A1995RL80300008 PM 8537924 ER PT J AU EVANS, DB AF EVANS, DB TI HALOTHANE AND ROUGE - AN ALTERNATIVE TO CHLOROFORM AND ROUGE AS A DISCLOSING MEDIUM SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Letter ID GUTTA-PERCHA C1 WILFORD HALL USAF MED CTR,DENT CORPS,DEPT GEN DENT,SAN ANTONIO,TX 78236. NR 15 TC 2 Z9 2 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD AUG PY 1995 VL 74 IS 2 BP 209 EP 211 DI 10.1016/S0022-3913(05)80190-8 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RL803 UT WOS:A1995RL80300017 PM 8537933 ER PT J AU BRYANT, LR DESROSIER, KF CARPENTER, MT AF BRYANT, LR DESROSIER, KF CARPENTER, MT TI HYDROXYCHLOROQUINE IN THE TREATMENT OF EROSIVE OSTEOARTHRITIS SO JOURNAL OF RHEUMATOLOGY LA English DT Article DE HYDROXYCHLOROQUINE; EROSIVE OSTEOARTHRITIS; OSTEOARTHRITIS AB Objective. Hydroxychloroquine has been used successfully in the treatment of inflammatory arthritides such as rheumatoid arthritis and systemic lupus erythematosus, and less commonly in the seronegative spondyloarthropathies. Our objective was to determine the effectiveness of hydroxychloroquine in inflammatory or erosive osteoarthritis (OA). Methods. We retrospectively reviewed clinical records of 8 patients prescribed hydroxychloroquine therapy whose symptoms of erosive OA were unresponsive to nonsteroidal antiinflammatory drugs (NSAID). Results. Hydroxychloroquine was effective in 6 of the 8 patients treated; it was well tolerated by all patients. Conclusion. The use of hydroxychloroquine in patients with erosive OA unresponsive to NSAID appears promising. Prospective studies are needed to confirm our observations. C1 WILFORD HALL USAF MED CTR,RHEUMATOL CLIN,LACKLAND AFB,TX 78236. NR 12 TC 26 Z9 29 U1 0 U2 0 PU J RHEUMATOL PUBL CO PI TORONTO PA 920 YONGE ST, SUITE 115, TORONTO ON M4W 3C7, CANADA SN 0315-162X J9 J RHEUMATOL JI J. Rheumatol. PD AUG PY 1995 VL 22 IS 8 BP 1527 EP 1531 PG 5 WC Rheumatology SC Rheumatology GA RM873 UT WOS:A1995RM87300017 PM 7473478 ER PT J AU DELONG, HC CARLIN, RT AF DELONG, HC CARLIN, RT TI PALLADIUM-CHLORIDE TO PALLADIUM METAL 2-DIMENSIONAL NUCLEATION AND GROWTH PHENOMENA SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID CHLOROALUMINATE IONIC LIQUIDS; ENERGY-STORAGE; ELECTROCHEMISTRY; REMOVAL; PROTONS AB The reduction of a monolayer of surface-bound Pd(II) to Pd(0) on a palladium substrate reveals two-dimensional nucleation and growth phenomena. Using well-known 2D nucleation-growth theories, this reduction is shown to proceed by an instantaneous nucleation and growth mechanism. However, when a submonolayer of Pd(II) is present, this mechanism fails to account for the experimentally observed high cathodic currents seen at zero time. A model incorporating preexisting Pd(0) cylindrical sites on the partially oxidized Pd(0) surface has been successfully applied to account for the discrepancy between the experimental results and current 2D theories. Using this modified 2D model, values for the mathematical product of cylindrical growth rate and the square root of the nucleation site densities have been determined, and the overpotential dependence of the growth rate has been confirmed and quantified. These 2D nucleation-growth phenomena have practical consequences on the performance of the Pd(II)/Pd(0) system as a faradaic supercapacitor, and probably on the performance of other 2D faradaic supercapacitor systems. In addition, because many electrodes undergo monolayer surface oxidation-reduction reactions in other solvent systems, especially aqueous electrolytes, these 2D nucleation-growth phenomena may play a role in these important surface-modifying redox systems as well. C1 USAF ACAD, FRANK J SEILER RES LAB, COLORADO SPRINGS, CO 80840 USA. NR 17 TC 9 Z9 9 U1 0 U2 6 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD AUG PY 1995 VL 142 IS 8 BP 2747 EP 2753 DI 10.1149/1.2050086 PG 7 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA RN053 UT WOS:A1995RN05300045 ER PT J AU WALKER, RD KAEFER, M HULBERT, W FLACK, C COLODNY, A PASSERINI, G ELDER, J FUNG, L KHOURY, A CHURCHILL, B HUSMANN, D AF WALKER, RD KAEFER, M HULBERT, W FLACK, C COLODNY, A PASSERINI, G ELDER, J FUNG, L KHOURY, A CHURCHILL, B HUSMANN, D TI DISCUSSION SO JOURNAL OF UROLOGY LA English DT Discussion C1 HOSP SICK CHILDREN,DEPT DIAGNOST IMAGING,TORONTO,ON M5G 1X8,CANADA. CASE WESTERN RESERVE UNIV,RAINBOW BABIES & CHILDRENS HOSP,SCH MED,DEPT UROL,CLEVELAND,OH 44106. CASE WESTERN RESERVE UNIV,RAINBOW BABIES & CHILDRENS HOSP,SCH MED,DEPT ANESTHESIOL,CLEVELAND,OH 44106. CASE WESTERN RESERVE UNIV,SCH MED,DEPT UROL,CLEVELAND,OH. CASE WESTERN RESERVE UNIV,SCH MED,DEPT PATHOL,CLEVELAND,OH. CASE WESTERN RESERVE UNIV,SCH MED,DEPT NUCL MED,CLEVELAND,OH. MAYO CLIN,DEPT UROL,ROCHESTER,MN. WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236. UNIV FLORIDA,COLL MED,DIV UROL,GAINESVILLE,FL. UNIV FLORIDA,COLL MED,DEPT SURG,GAINESVILLE,FL. CHILDRENS HOSP,DIV UROL,BOSTON,MA. RP WALKER, RD (reprint author), HOSP SICK CHILDREN,DEPT SURG,DIV UROL,TORONTO,ON M5G 1X8,CANADA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD AUG PY 1995 VL 154 IS 2 BP 729 EP 730 PN 2 PG 2 WC Urology & Nephrology SC Urology & Nephrology GA RJ051 UT WOS:A1995RJ05100020 ER PT J AU BOMALASKI, MD TEAGUE, JL BROOKS, B AF BOMALASKI, MD TEAGUE, JL BROOKS, B TI THE LONG-TERM IMPACT OF UROLOGICAL MANAGEMENT ON THE QUALITY-OF-LIFE OF CHILDREN WITH SPINA-BIFIDA SO JOURNAL OF UROLOGY LA English DT Article DE MENINGOMYELOCELE; URINARY INCONTINENCE; SEX BEHAVIOR; EMPLOYMENT; EDUCATION ID CONDUIT URINARY-DIVERSION; MYELOMENINGOCELE; CATHETERIZATION AB To evaluate the integration of children with spina bifida into adult society and identify important urological factors 20 female and 18 male spina bifida patients older than 18 years were evaluated with respect to urological management and complications. A detailed questionnaire concerning educational achievements, living arrangements, employment and interpersonal relationships was completed and compared to similar data obtained from the 1990 United States census. Educational achievement and living arrangements for most patients were comparable to age matched peers in the general population and were independent of gender or method of urinary management. The only statistically significant factor related to a positive outcome was female gender in the areas of employment (p < 0.014) and sexual relationships (p < 0.005). Female spina bifida patients adapted better to adult society than their male counterparts. Intestinal urinary conduits were detrimental to long-term renal function. C1 BROOKE ARMY MED CTR,SAN ANTONIO,TX. RP BOMALASKI, MD (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,SAN ANTONIO,TX 78236, USA. NR 12 TC 19 Z9 19 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD AUG PY 1995 VL 154 IS 2 BP 778 EP 781 DI 10.1016/S0022-5347(01)67161-1 PN 2 PG 4 WC Urology & Nephrology SC Urology & Nephrology GA RJ051 UT WOS:A1995RJ05100035 PM 7609178 ER PT J AU FLACK, CE WALKER, RD AF FLACK, CE WALKER, RD TI ONLAY-TUBE-ONLAY URETHROPLASTY TECHNIQUE IN PRIMARY PERINEAL HYPOSPADIAS SURGERY SO JOURNAL OF UROLOGY LA English DT Article DE HYPOSPADIAS; URETHRA; GENITALIA; SURGICAL FLAPS ID ISLAND FLAP URETHROPLASTY AB We extended the principles of the onlay flap to the most severe hypospadias cases. Four patients with perineal hypospadias required central division of the urethral plate to correct chordee despite dorsal plication, The urethra was reconstructed in 1 stage by proximally and distally onlaying to the remaining urethral plate a flap with its central portion tubularized to fill the gap where there was no longer a urethral plate. All patients have good cosmetic and functional results at 1 year of followup. There were no strictures or diverticula but 1 fistula developed, This technique extends the principles and advantages of an onlay flap to those severe hypospadias cases that require division of the urethral plate to correct chordee, C1 UNIV FLORIDA,COLL MED,DIV UROL,GAINESVILLE,FL. UNIV FLORIDA,COLL MED,DEPT SURG,GAINESVILLE,FL. RP FLACK, CE (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,LACKLAND AFB,TX 78236, USA. NR 8 TC 15 Z9 15 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0022-5347 J9 J UROLOGY JI J. Urol. PD AUG PY 1995 VL 154 IS 2 BP 837 EP 839 DI 10.1016/S0022-5347(01)67179-9 PN 2 PG 3 WC Urology & Nephrology SC Urology & Nephrology GA RJ051 UT WOS:A1995RJ05100053 PM 7609193 ER PT J AU CARLSON, JL AF CARLSON, JL TI HOW THE OTHER HALF LIVED - A PEOPLES GUIDE TO AMERICAN HISTORIC SITES - BURNHAM,P SO LIBRARY JOURNAL LA English DT Book Review RP CARLSON, JL (reprint author), VANDENBERG AFB LIB,VANDENBERG AFB,CA 93437, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD AUG PY 1995 VL 120 IS 13 BP 101 EP 101 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA RN627 UT WOS:A1995RN62700215 ER PT J AU PATNAIK, SS PLIMPTON, SJ PACHTER, R ADAMS, WW AF PATNAIK, SS PLIMPTON, SJ PACHTER, R ADAMS, WW TI MODELING A NEMATIC LIQUID-CRYSTAL SO LIQUID CRYSTALS LA English DT Article ID SIMULATION; PHASES AB The bulk phase liquid crystalline behaviour of a cyclic siloxane with a pentamethylcyclosiloxane core and biphenyl-4-allyloxybenzoate mesogens (BCS) was studied using molecular dynamics (MD) and wide angle X-ray analysis. This material exhibits partial crystallinity at room temperature and liquid crystalline behaviour above 120 degrees C. For the MD simulations an ensemble of 27 molecules with 135 mesogenic units was simulated and a molecular mechanics force field was used to model the structural anisotropy of the siloxane molecules. Simulations were carried out both at room temperature and at an elevated temperature (425 K). Room temperature simulations showed that, contrary to our initial assumptions, the low energy molecular conformations were not cylindrical but splayed in shape. During the simulation a smectic-like, tilted layer structure was found to evolve for the cluster when full atom potentials were used, while no such development was observed when electrostatic interactions were neglected. The presence of a tilted layered structure was also suggested by the X-ray data. These results indicate that long range electrostatic interactions are significant for the molecular system under study. In order to calculate the orientational order parameter, the orientation of the molecular axis had to be determined. This was achieved by describing the mesogen shapes to be ellipsoidal and defining the principal axis of the ellipsoids to be the molecular directors. By sampling over 200 ps of simulation at 425 K, the time averaged order parameter (S) was calculated. The calculated S of 0 . 36 was comparable to the value of 0 . 4-0 . 45 found from the experimental data. Apart from providing insight into the relative importance of the various competing forces in the formation of the liquid crystalline phase, these simulations are also expected to be useful in predicting the mesophase behaviour of liquid crystalline systems. C1 UNIV VIRGINIA, CHARLOTTESVILLE, VA USA. SANDIA NATL LABS, ALBUQUERQUE, NM 87185 USA. RP PATNAIK, SS (reprint author), USAF, WRIGHT LAB,MAT DIRECTORATE,MLPJ,BLDG 651, 3005 P ST, STE 1, WRIGHT PATTERSON AFB, OH 45433 USA. RI Adams, Wade/A-7305-2010 NR 15 TC 16 Z9 16 U1 0 U2 5 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0267-8292 J9 LIQ CRYST JI Liq. Cryst. PD AUG PY 1995 VL 19 IS 2 BP 213 EP 220 DI 10.1080/02678299508031971 PG 8 WC Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary SC Chemistry; Crystallography; Materials Science GA RQ492 UT WOS:A1995RQ49200009 ER PT J AU BAGLEY, RL FREED, AD JONES, DIG AF BAGLEY, RL FREED, AD JONES, DIG TI A RENEWAL THEORY OF INELASTICITY SO MECHANICS OF MATERIALS LA English DT Article DE CREEP; PLASTICITY; VISCOPLASTICITY; INTRINSIC TIME; CONSTITUTIVE LAWS ID ENDOCHRONIC THEORY; YIELD-SURFACE; CYCLIC PLASTICITY; INTERNAL TIME; VISCOPLASTICITY; CREEP AB A uniaxial, high-temperature theory of inelastic deformation in metals and alloys is presented. The theory is based on a generalization of a creep theory to accommodate time-varying loads. The generalization is made possible through the concept of an ''intrinsic'' or ''internal'' time that arises from the mathematical theory of probability. The inelasticity theory is presented as a non-linear viscoelasticity theory and is used to predict the measured stress relaxation, stress-strain curves and load reversal response for a steel alloy. C1 NASA,LEWIS RES CTR,DIV MAT,CLEVELAND,OH 44135. TECHNOL SCI SERV INC,DAYTON,OH 45431. RP BAGLEY, RL (reprint author), USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,DIV STRUCT,WRIGHT PATTERSON AFB,OH 45433, USA. OI Freed, Alan/0000-0002-3492-0628 NR 28 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-6636 J9 MECH MATER JI Mech. Mater. PD AUG PY 1995 VL 21 IS 2 BP 99 EP 117 DI 10.1016/0167-6636(95)00003-8 PG 19 WC Materials Science, Multidisciplinary; Mechanics SC Materials Science; Mechanics GA RM928 UT WOS:A1995RM92800001 ER PT J AU DUTTON, RE SHAMASUNDAR, S SEMIATIN, SL AF DUTTON, RE SHAMASUNDAR, S SEMIATIN, SL TI MODELING THE HOT CONSOLIDATION OF CERAMIC AND METAL POWDERS SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID PLASTICITY THEORY; POROUS METALS; DENSIFICATION; CREEP; COMPACTS; DEFORMATION; COMPONENTS; GLASSES; DENSITY; STRESS AB Modeling of the consolidation of ceramic and metal powders by sintering, hot pressing, and hot-isostatic pressing (HIP) was conducted using a continuum yield function and associated-flow rule modified to incorporate microstructure effects such as grain growth, pore size, and pore geometry. It was shown that consolidation behavior can be described over the entire range of densities through two parameters, the stress intensification factor and Poisson's ratio, which are readily measured using uniaxial upset tests. Both parameters are functions of relative density, whose exact dependence varies from one material to another. Furthermore, it was demonstrated that in sinter forging of ceramics, an ''apparent'' Poisson's ratio depending on stress level (relative to the sintering stress) gives a quantitative measure of the competition between sintering and creep deformation. The accuracy of the microstructure-sensitive yield function was established through finite-element modeling (FEM) simulations of the isothermal sintering of a soda-lime glass, sinter forging of alumina, and die pressing of an alpha-two titanium aluminide alloy. RP DUTTON, RE (reprint author), USAF,WRIGHT LAB,DIV MET & CERAM,MAT DIRECTORATE,MLLN,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 34 TC 18 Z9 18 U1 0 U2 6 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD AUG PY 1995 VL 26 IS 8 BP 2041 EP 2051 DI 10.1007/BF02670676 PG 11 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RL362 UT WOS:A1995RL36200014 ER PT J AU AMATO, AA JACKSON, CE RIDINGS, LW BAROHN, RJ AF AMATO, AA JACKSON, CE RIDINGS, LW BAROHN, RJ TI CHILDHOOD-ONSET OCULOPHARYNGODISTAL MYOPATHY WITH CHRONIC INTESTINAL-PSEUDO-OBSTRUCTION SO MUSCLE & NERVE LA English DT Article DE OCULOPHARYNGODISTAL MYOPATHY; OCULOPHARYNGEAL MUSCULAR DYSTROPHY; CHRONIC INTESTINAL PSEUDOOBSTRUCTION ID INCLUSION-BODY MYOSITIS; FAMILIAL VISCERAL MYOPATHY; DUCHENNES MUSCULAR-DYSTROPHY; DISTAL MYOPATHY; PSEUDOOBSTRUCTION; OPHTHALMOPLEGIA; INVOLVEMENT; DISORDER; PROTEIN; SPREAD AB Oculopharyngodistal myopathy is characterized by the adult onset of ptosis, external ophthalmoplegia, dysphagia, and distal weakness. Although dysphagia is common, other gastrointestinal involvement has not been described. We report a case with childhood onset who developed chronic intestinal pseudo-obstruction. Other myopathies associated with ophthalmoplegia and intestinal pseudo-obstruction such as mitochondrial cytopathies were excluded, Whether oculopharyngodistal myopathy is a variant of oculopharyngeal muscular dystrophy or a distinct neuromuscular disorder is unknown and requires further study. (C) 1995 John Wiley and Sons, Inc. C1 UNIV TEXAS,HLTH SCI CTR,DEPT MED NEUROL,SAN ANTONIO,TX. UNIV TEXAS,SW MED CTR,DEPT NEUROL,DALLAS,TX 75235. RP AMATO, AA (reprint author), WILFORD HALL USAF MED CTR,PSMN,DEPT NEUROL,2200 BERGQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. NR 41 TC 10 Z9 11 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-639X J9 MUSCLE NERVE JI Muscle Nerve PD AUG PY 1995 VL 18 IS 8 BP 842 EP 847 DI 10.1002/mus.880180807 PG 6 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA RJ148 UT WOS:A1995RJ14800005 PM 7630344 ER PT J AU HARRISON, MJ EISENBERG, MB ULLMAN, JS OPPENHEIM, JS CAMINS, MB POST, KD AF HARRISON, MJ EISENBERG, MB ULLMAN, JS OPPENHEIM, JS CAMINS, MB POST, KD TI SYMPTOMATIC CAVERNOUS MALFORMATIONS AFFECTING THE SPINE AND SPINAL-CORD SO NEUROSURGERY LA English DT Article DE CAVERNOUS HEMANGIOMAS; CAVERNOUS MALFORMATIONS; EMBRYOLOGY; EPIDURAL; VERTEBRA; INTRAMEDULLARY; PATHOPHYSIOLOGY ID VERTEBRAL HEMANGIOMAS; CAUDA-EQUINA; PREOPERATIVE EMBOLIZATION; VASCULAR MALFORMATIONS; NATURAL-HISTORY; ANGIOMAS; ANGIOGRAPHY; COMPRESSION; PREGNANCY; RADIOTHERAPY AB TEN CASES OF symptomatic cavernous malformations affecting the spine and spinal cord were retrospectively reviewed. The cases display a spectrum of pathological findings involving the vertebral body, vertebral body with epidural extension, epidural space without bony involvement, intradural extramedullary space, and intramedullary lesions. Lesions at all locations are identical histologically, electron microscopically, and immunohistochemically. This perspective, in which cavernous malformations are envisoned as a single entity arising at numerous locations, runs contrary to the view found in the neurosurgical literature. In most discussions of cavernous malformations, vertebral body lesions are depicted as separate entities from intradural lesions. Cavernous malformations, also called cavernous hemangiomas, are developmental vascular hamartomas that, by definition, do not grow by mitotic activity. Yet, the expansion of these lesions is well documented both in the literature and among our cases. The therapeutic modalities used in our series included observation, embolization, radiation, and surgical resection alone or in combination. All modalities are effective but must be tailored to the specific needs and condition of the patient. The embryology, methods of treatment, and proposed mechanisms of growth, plus similarities and differences between cavernous malformations at each location, are reviewed. Analogies between spinal and intracranial lesions are presented. On the basis of this series and a review of the literature, we conclude that cavernous malformations represent a single entity regardless of location. Segregation based on location, as is prevalent throughout the neurosurgical literature, hinders an overall understanding of these lesions. Cavernous malformations are more appropriately viewed as a single pathological entity arising in a multitude of locations. The difficulties encountered when managing cavernous malformations at various locations are unique to the location and not the lesion. C1 MT SINAI HOSP,DEPT NEUROSURG,NEW YORK,NY 10029. CUNY MT SINAI SCH MED,NEW YORK,NY 10029. RP HARRISON, MJ (reprint author), DAVID GRANT USAF MED CTR,NEUROSURG SERV,DIV NEUROSURG,101 BODIN CIRCLE,TRAVIS AFB,CA 94535, USA. NR 87 TC 93 Z9 93 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0148-396X J9 NEUROSURGERY JI Neurosurgery PD AUG PY 1995 VL 37 IS 2 BP 195 EP 204 PG 10 WC Clinical Neurology; Surgery SC Neurosciences & Neurology; Surgery GA RK745 UT WOS:A1995RK74500005 PM 7477769 ER PT J AU HENRY, LJ AF HENRY, LJ TI CORRELATION OF GE E' DEFECT SITES WITH 2ND-HARMONIC GENERATION IN POLED HIGH-WATER FUSED-SILICA SO OPTICS LETTERS LA English DT Article ID 2ND-HARMONIC GENERATION; SINGLE-MODE; FIBERS; CENTERS; SIO2 AB Second-harmonic generation (SHG) in poled high-water fused silica was found to be linearly dependent on the relative concentration of Ge E' defect sites (< 10(-15) defect sites/cm(3)) for the highly pure UV-grade material. For commercial-grade material characterized by higher concentrations of Ge E' defects sites, the SHG appeared to saturate at approximately 0.5 pm/V. No dependence of the SHG was found on the relative concentration of Ge E' defects sites in poled commercial-grade low-water fused silica. RP HENRY, LJ (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 16 TC 13 Z9 13 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD AUG 1 PY 1995 VL 20 IS 15 BP 1592 EP 1594 DI 10.1364/OL.20.001592 PG 3 WC Optics SC Optics GA RM760 UT WOS:A1995RM76000002 PM 19862093 ER PT J AU HURST, MK YODER, BA AF HURST, MK YODER, BA TI DETECTION OF BACTEREMIA IN YOUNG INFANTS - IS 48 HOURS ADEQUATE SO PEDIATRIC INFECTIOUS DISEASE JOURNAL LA English DT Note DE BACTEREMIA; INFANT; NEONATE; MICROBIOLOGIC DETECTION SYSTEM RP HURST, MK (reprint author), USAF,WILFORD HALL USAF MED CTR,MC,WHMC PSP,2200 BERGQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. NR 7 TC 19 Z9 20 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0891-3668 J9 PEDIATR INFECT DIS J JI Pediatr. Infect. Dis. J. PD AUG PY 1995 VL 14 IS 8 BP 711 EP 713 PG 3 WC Immunology; Infectious Diseases; Pediatrics SC Immunology; Infectious Diseases; Pediatrics GA RN780 UT WOS:A1995RN78000013 PM 8532432 ER PT J AU CARRETTA, TR REE, MJ AF CARRETTA, TR REE, MJ TI NEAR IDENTITY OF COGNITIVE STRUCTURE IN SEX AND ETHNIC-GROUPS SO PERSONALITY AND INDIVIDUAL DIFFERENCES LA English DT Article ID FIT INDEXES AB Comparisons of aptitude factor structures were made in large samples of young Americans who took a multiple aptitude test battery. The factor model that was used had been statistically confirmed. It included hierarchical g and five lower-order factors representing Verbal, Math, Spatial, Technical Knowledge, and Perpetual Speed. The model showed good fit for both the sexes (male and female) and ethnic group (White, Black, Hispanic, Asian-American, and Native-American) comparisons. The proportions of total and common variance accounted for by g and the five lower-order factors were similar for men and women and for all five ethnic groups. Confirmatory factor techniques that imposed statistical constraints tested if the loadings of the tests were the same for both sexes and for Whites vs each of the other ethnic groups. Although many of the tests of the differences in the loadings were statistically significant, most differences were small in magnitude (less than 0.05). The most notable differences occurred for a test of aviation knowledge. It had a lower loading for men than for women on both hierarchical g and on the lower-order Technical Knowledge factor. It also had a lower loading for Whites than for Blacks and Asian-Americans on the lower-order Technical Knowledge factor. Correlations between factor loadings for the sex groups and for all pairs of ethnic groups were very high, approaching r=1.0. Regressions between pairs of groups indicated that there was no mean difference in loadings between males and females and among the ethnic groups. These findings, along with previous research, present a consistent picture of near identity of structure of intellect for sex and ethnic groups. RP CARRETTA, TR (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 30 TC 26 Z9 26 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0191-8869 J9 PERS INDIV DIFFER JI Pers. Individ. Differ. PD AUG PY 1995 VL 19 IS 2 BP 149 EP 155 DI 10.1016/0191-8869(95)00031-Z PG 7 WC Psychology, Social SC Psychology GA RJ693 UT WOS:A1995RJ69300003 ER PT J AU COOPER, TM STONE, MO NATARAJAN, LV CRANE, RL AF COOPER, TM STONE, MO NATARAJAN, LV CRANE, RL TI INVESTIGATION OF LIGHT-INDUCED CONFORMATION CHANGES IN SPIROPYRAN-MODIFIED SUCCINYLATED POLY(L-LYSINE) SO PHOTOCHEMISTRY AND PHOTOBIOLOGY LA English DT Note ID POLY(SPIROPYRAN-L-GLUTAMATE); PHOTOCONTROL; HELIX; ACID) AB To determine the maximum range of coupling between side-chain photochromism and polypeptide conformation change, we modified the carboxylate side chains of succinylated poly(L-lysine) with a spiropyran to form polypeptide I. The extent of modification was determined to be 35.5%. The spacer group length between the polypeptide alpha-carbon and the dye was 12 atoms, providing minimum polypeptide-dye interaction. Conformation changes were monitored by circular dichroism as a function of light adaptation and solvent composition (hexafluoroisopropanol [HFIP] vs trifluoroethanol [TFE]), Under all solvent compositions, the dark-adapted dye was in the merocyanine form. Light adaptation by visible light converted the dye to the spiropyran form. When dissolved in TFE, I adopted a helical conformation insensitive to light adaptation. With increasing percentage HFIP, a solvent-induced helix-to-coil transition was observed around 80% (vol/vol) HFIP. At 100% HFIP, both light- and dark-adapted forms of I were in the coil state. Near the midpoint of the solvent-induced helix-to-coil transition, light adaptation caused conformation changes. Applying helix-to-coil transition theory, we measured a statistically significant difference in coil segment-HFIP binding constant for light- vs dark-adapted solutions (6.38 +/- 0.03 M(-1) vs 6.56 +/- 0.03 M(-1)), but not for the nucleation parameter sigma (1.2 +/- 0.4 10(-3) vs 1.3 +/- 0.3 x 10(-3)). The small binding constant difference translated to a light-induced binding energy difference of 17 cal/mol/monomer. Near the midpoint of the helix-to-coil transition, collective interactions between monomer units made possible the translation of a small energy difference (less than RT) into large macromolecular conformation changes. This work parallels similar behavior observed in poly(isocyanate) (Green, M. M. et al. J. Am. Chem. Soc. 115, 4941-4942, 1993). The subtle differences in dye-backbone interaction in I suggested a maximum coupling distance (12 atoms) beyond which polypeptide conformation and dye state are uncoupled. C1 SCI APPLICAT INT CORP,DAYTON,OH 45433. RP COOPER, TM (reprint author), USAF,WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 25 TC 7 Z9 7 U1 0 U2 2 PU AMER SOC PHOTOBIOLOGY PI AUGUSTA PA BIOTECH PARK, 1021 15TH ST, SUITE 9, AUGUSTA, GA 30901-3158 SN 0031-8655 J9 PHOTOCHEM PHOTOBIOL JI Photochem. Photobiol. PD AUG PY 1995 VL 62 IS 2 BP 258 EP 262 DI 10.1111/j.1751-1097.1995.tb05267.x PG 5 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA RM943 UT WOS:A1995RM94300007 PM 7480135 ER PT J AU ARMSTRONG, JO AF ARMSTRONG, JO TI THERMAL IMAGING KEEPS OLDER PLANES AIRBORNE SO PHOTONICS SPECTRA LA English DT Editorial Material RP ARMSTRONG, JO (reprint author), WARNER ROBINS AIR LOGIST COMMAND,ROBINS AFB,GA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LAURIN PUBL CO INC PI PITTSFIELD PA BERKSHIRE COMMON PO BOX 1146, PITTSFIELD, MA 01202 SN 0731-1230 J9 PHOTON SPECTRA JI Photon. Spect. PD AUG PY 1995 VL 29 IS 8 BP 100 EP 101 PG 2 WC Optics SC Optics GA RM942 UT WOS:A1995RM94200052 ER PT J AU WILSON, GF HANKINS, T AF WILSON, GF HANKINS, T TI PSYCHOPHYSIOLOGICAL ASSESSMENT OF PILOT WORKLOAD SO PSYCHOPHYSIOLOGY LA English DT Meeting Abstract C1 USAF,ARMSTRONG LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC PSYCHOPHYSIOL RES PI WASHINGTON PA 1010 VERMONT AVE NW SUITE 1100, WASHINGTON, DC 20005 SN 0048-5772 J9 PSYCHOPHYSIOLOGY JI Psychophysiology PD AUG PY 1995 VL 32 SU 1 BP S14 EP S14 PG 1 WC Psychology, Biological; Neurosciences; Physiology; Psychology; Psychology, Experimental SC Psychology; Neurosciences & Neurology; Physiology GA RT160 UT WOS:A1995RT16000057 ER PT J AU ENLOE, CL LLOYD, J MEASSICK, S CHAN, C MCGARITY, JO HUBER, A HARTNETT, P AF ENLOE, CL LLOYD, J MEASSICK, S CHAN, C MCGARITY, JO HUBER, A HARTNETT, P TI COMPACT THERMAL ION DETECTOR FOR SPACE AND LABORATORY APPLICATIONS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID RETARDING POTENTIAL ANALYZERS AB We have developed a new compact thermal ion sensor suitable for spaceflight or laboratory applications. The device is highly sensitive and has a wide dynamic range due to its use of a microchannel plate charge multiplier. It allows spatial variations in velocity and anisotropic temperatures to be measured in a flowing plasma stream using a segmented anode. It has a high rejection to solar UV due to the trajectories of the particles within the device. The device has been flight tested as part of the Charging Hazards and Wake Studies flight experiment and sample data from the flight are presented. We discuss interpretation of the output of the device including extracting the parallel and perpendicular temperatures and the flow energy of a plasma stream. (C) 1995 American Institute of Physics. C1 USAF,PHILLIPS LAB,BEDFORD,MA 01731. NORTHEASTERN UNIV,DEPT ELECT & COMP ENGN,BOSTON,MA 02115. AMPTEK INC,BEDFORD,MA 01730. WENTWORTH INST TECHNOL,BOSTON,MA 02115. RP ENLOE, CL (reprint author), USAF ACAD,DEPT PHYS,COLORADO SPRINGS,CO 80849, USA. NR 16 TC 6 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD AUG PY 1995 VL 66 IS 8 BP 4174 EP 4179 DI 10.1063/1.1145367 PG 6 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA RP408 UT WOS:A1995RP40800027 ER PT J AU CLEWELL, HJ QUINN, DW ANDERSEN, ME CONOLLY, RB AF CLEWELL, HJ QUINN, DW ANDERSEN, ME CONOLLY, RB TI AN IMPROVED APPROXIMATION TO THE EXACT SOLUTION OF THE 2-STAGE CLONAL GROWTH-MODEL OF CANCER SO RISK ANALYSIS LA English DT Article DE CANCER MODEL; CELL PROLIFERATION; CLONAL GROWTH; EXACT SOLUTION; 2-STAGE MODEL ID STOCHASTIC 2-STAGE MODEL; RISK ASSESSMENT; HUMAN CARCINOGENESIS; HAZARD FUNCTION; PROBABILITY; MUTATION; TUMOR AB Multistage clonal growth models are of interest for cancer risk assessment because they can explicitly incorporate data on cell replication. Both approximate and exact formulations of the two stage growth model have been described. The exact solution considers the conditional probability of tumors arising in previously tumor-free animals; the approximate solution estimates total probability of tumor formation. The exact solution is much more computationally intensive when time-dependent cell growth parameters are included. The approximate solution deviates from the exact solution at high incidences and probabilities of tumor. This report describes a computationally tractable, 'improved approximation' to the exact solution. Our improved approximation includes a correction term to adjust the unconditional expectation of intermediate cells based on the time history of formation of intermediate cells by mutation of normal cells (recruitment) or by cell division in the intermediate cell population (expansion). The improved approximation provided a much better match to the exact solution than the approximate solution for a wide range of parameter values. The correction term also appears to provide insight into the biological factors that contribute to the variance of the expectation for the number of intermediate cells over time. C1 USAF,INST TECHNOL,ENC,WRIGHT PATTERSON AFB,OH 45433. ICF KAISER INT,MORRISVILLE,NC 27560. CHEM IND INST TOXICOL,RES TRIANGLE PK,NC 27709. RP CLEWELL, HJ (reprint author), ICF KAISER INT,KS CRUMP DIV,602 E GEORGIA AVE,RUSTON,LA 71270, USA. NR 12 TC 4 Z9 4 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0272-4332 J9 RISK ANAL JI Risk Anal. PD AUG PY 1995 VL 15 IS 4 BP 467 EP 473 DI 10.1111/j.1539-6924.1995.tb00339.x PG 7 WC Public, Environmental & Occupational Health; Mathematics, Interdisciplinary Applications; Social Sciences, Mathematical Methods SC Public, Environmental & Occupational Health; Mathematics; Mathematical Methods In Social Sciences GA TB073 UT WOS:A1995TB07300004 PM 7480946 ER PT J AU JOHN, R KHOBAIB, M SMITH, PR AF JOHN, R KHOBAIB, M SMITH, PR TI RUPTURE LIFE OF UNIDIRECTIONALLY REINFORCED TITANIUM MATRIX COMPOSITES SUBJECTED TO SUSTAINED TRANSVERSE LOADING SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID CREEP C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP JOHN, R (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD AUG 1 PY 1995 VL 33 IS 3 BP 473 EP 478 DI 10.1016/0956-716X(95)00217-J PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RK597 UT WOS:A1995RK59700020 ER PT J AU BJORING, RG AF BJORING, RG TI GERMAN POWS SO SMITHSONIAN LA English DT Letter RP BJORING, RG (reprint author), USAF,MENLO PK,CA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SMITHSONIAN ASSOCIATES PI WASHINGTON PA 900 JEFFERSON DRIVE, WASHINGTON, DC 20560 SN 0037-7333 J9 SMITHSONIAN JI Smithsonian PD AUG PY 1995 VL 26 IS 5 BP 10 EP 10 PG 1 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA RK790 UT WOS:A1995RK79000003 ER PT J AU KOROSCIL, TM AF KOROSCIL, TM TI THIONAMIDES ALTER THE EFFICACY OF RADIOIODINE TREATMENT IN PATIENTS WITH GRAVES-DISEASE SO SOUTHERN MEDICAL JOURNAL LA English DT Article ID ANTI-THYROID DRUGS; I-131 THERAPY; HYPERTHYROIDISM; IODINE; GOITER AB Thionamides are often used acutely to control the symptoms of thyrotoxicosis associated with Graves' disease before definitive treatment with radioiodine. Several reports have suggested that pretreatment with thionamides reduces the efficacy of radioiodine therapy in patients with Graves' disease, but other data refute this. This study retrospectively reviewed the records of 95 patients with Graves' disease treated with radioiodine. Pretreatment with thionamides resulted in a significantly greater (2 1/2-fold) treatment failure rate than in patients not pretreated with thionamides but given a comparable dose of radioiodine. Higher serum thyroxine concentration at the time of diagnosis was also an independent factor associated with radioiodine treatment failure. C1 WILFORD HALL USAF MED CTR,SERV ENDOCRINOL,LACKLAND AFB,SAN ANTONIO,TX 78236. NR 23 TC 21 Z9 21 U1 0 U2 1 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD AUG PY 1995 VL 88 IS 8 BP 831 EP 836 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA RM717 UT WOS:A1995RM71700007 PM 7631208 ER PT J AU CESPEDES, RD ROETTGER, RH PERETSMAN, SJ AF CESPEDES, RD ROETTGER, RH PERETSMAN, SJ TI HERNIATION OF THE URINARY-BLADDER - A COMPLICATION OF TRAUMATIC PUBIC SYMPHYSIS DIASTASIS SO SOUTHERN MEDICAL JOURNAL LA English DT Note AB Bladder rupture and urethral disruption are relatively common injuries associated with pelvic trauma; however, bladder herniation into a pubic symphysis diastasis is an unusual sequelae of pelvic trauma. We report a case of anterior bladder wall herniation into a traumatic pubic diastasis and review the literature. Recommendations focusing on avoiding possible urinary bladder complications associated with closed reduction and external fixation of the diastasis are offered. C1 WILFORD HALL USAF MED CTR,DEPT TRAUMA SURG,LACKLAND AFB,TX 78236. RP CESPEDES, RD (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,PSSU,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 7 TC 8 Z9 8 U1 0 U2 0 PU SOUTHERN MEDICAL ASSN PI BIRMINGHAM PA 35 LAKESHORE DR PO BOX 190088, BIRMINGHAM, AL 35219 SN 0038-4348 J9 SOUTHERN MED J JI South.Med.J. PD AUG PY 1995 VL 88 IS 8 BP 849 EP 850 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA RM717 UT WOS:A1995RM71700013 PM 7631214 ER PT J AU WESTMARK, C LAWLESS, GW AF WESTMARK, C LAWLESS, GW TI A DISCUSSION OF RAIN EROSION TESTING AT THE UNITED-STATES-AIR-FORCE RAIN EROSION TEST FACILITY SO WEAR LA English DT Article; Proceedings Paper CT 8th International Conference on Erosion by Liquid and Solid Impact (ELSI VIII) CY SEP 04-08, 1994 CL CAMBRIDGE, ENGLAND SP EPRI DE RAIN; EROSION; AEROSPACE AB For the past twenty-five years the University of Dayton Research Institute has operated the Rain Erosion Test Facility for the United States Air Force Wright Laboratory Materials Directorate at Wright-Patterson Air Force Base, Ohio, This is a commercially available, whirling-arm facility that produces a 25.4 mm per h rain field and is capable of providing specimen velocities up to 290 m s(-1) (650 mile h(-1), 0.87 Mach). Various attack angles of specimen-to-rainfall are also possible ranging from 15 degrees to normal. The average rainfall drop size is 2 mm (0.079 in). The facility is in use on a daily basis and serves the aerospace community on virtually a world-wide basis. Almost 40000 test specimens have been evaluated as of January 1994. This paper will describe the facility in some detail. The method of testing and operation will be described and discussion will include the many types of specimens and materials that can be tested-ranging from metals, composites, plastics, honeycomb constructions, glass/optical, ceramics-and their allowable size and configurations. The mode of operation and the evaluation procedures used will be detailed. Failure mechanisms as erosion and adhesion loss will be discussed and related to materials performance and applications. Work in this facility has become the cornerstone for testing to many Military Specification coatings' requirements. It has been referred to as a 'national resource' by USAF personnel. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP WESTMARK, C (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 1 TC 7 Z9 8 U1 1 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD AUG PY 1995 VL 186 IS 2 BP 384 EP 387 DI 10.1016/0043-1648(95)07139-3 PG 4 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RW620 UT WOS:A1995RW62000006 ER PT J AU WELSH, BM ELLERBROEK, BL ROGGEMANN, MC PENNINGTON, TL AF WELSH, BM ELLERBROEK, BL ROGGEMANN, MC PENNINGTON, TL TI FUNDAMENTAL PERFORMANCE COMPARISON OF A HARTMANN AND A SHEARING INTERFEROMETER WAVE-FRONT SENSOR SO APPLIED OPTICS LA English DT Article ID LASER GUIDE STARS; ADAPTIVE-OPTICS; SYSTEMS; LIGHT AB The performance of ground-based optical imaging systems is severely degraded from the diffraction limit by the random effects of the atmosphere. Adaptive-optics techniques have been used to compensate for atmospheric-turbulence effects. A critical component in the adaptive-optics system is the wave-front sensor. At present, two types of sensors are common: the Hartmann-Shack wave-front sensor and the shearing interferometer wave-front sensor. In this paper we make a direct performance comparison of these two sensors. The performance calculations are restricted to common configurations of these two sensors and the fundamental limits imposed by shot noise and atmospheric effects. These two effects encompass the effects of extended reference beacons and sensor subaperture spacings larger than the Fried parameter ro. Our results indicate comparable performance for good seeing conditions and small beacons. However, for poor seeing conditions and extended beacons, the Hartmann sensor has lower error levels than the shearing interferometer. C1 USAF,PHILLIPS LAB,DEPT ELECT & COMP ENGN,KIRTLAND AFB,NM 87117. USAF,PHILLIPS LAB,STARFIRE OPT RANGE,KIRTLAND AFB,NM 87117. RP WELSH, BM (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 38 Z9 39 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUL 20 PY 1995 VL 34 IS 21 BP 4186 EP 4195 PG 10 WC Optics SC Optics GA RL129 UT WOS:A1995RL12900002 PM 21052244 ER PT J AU FERGUSON, TR AF FERGUSON, TR TI VECTOR MODES OF LASERS WITH RADIALLY BIREFRINGENT ELEMENTS SO APPLIED OPTICS LA English DT Article DE LASERS; RESONATORS; VECTOR MODES; POLARIZATION; BIREFRINGENCE ID SOLID-STATE LASERS; UNSTABLE RESONATORS; YAG LASERS; ND; TRANSFORM; GAIN AB A general theory of steady-state diffractive vector modes for lasers with polarizing optical elements is reviewed. The problems inherent in including radially birefringent media such as solid-state rods are emphasized. A trade-off between ease of implementation, ease of interpretation, and cost of computation arises from the choices of representations of the field. In the scalar theory for axisymmetric resonators, the polar representation with expansion of the field in azimuthal Fourier series yields separation into an integral equation for each azimuthal index. A theoretical investigation of this approach for the vector case is presented. For a simple resonator composed of two mirrors and a bifocal lens, separation into coupled pairs of integral equations is obtained. Numerical solutions that use fast Hankel transforms from scalar theory are straightforward. Complications arise when other optical elements are introduced into the resonator. Methods for handling the general case are discussed. RP FERGUSON, TR (reprint author), USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117, USA. NR 24 TC 1 Z9 1 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUL 20 PY 1995 VL 34 IS 21 BP 4210 EP 4216 PG 7 WC Optics SC Optics GA RL129 UT WOS:A1995RL12900005 PM 21052247 ER PT J AU LITCHFORD, RJ RUYTEN, WM AF LITCHFORD, RJ RUYTEN, WM TI DIGITAL IMAGING TECHNIQUE FOR OPTICAL-EMISSION SPECTROSCOPY OF A HYDROGEN ARCJET PLUME SO APPLIED OPTICS LA English DT Article DE DIGITAL IMAGING; SPECTROSCOPY; EMISSION; OPTICAL; HYDROGEN; ARCJET; PLASMA; DYNAMIC RANGE ID TEMPERATURE AB A digital imaging technique has been developed for optical emission spectroscopy measurements of a 1.6-kW hydrogen arcjet plume. Emissions from the Balmer alpha and beta transitions of excited atomic hydrogen were measured with a computer-controlled red-green-blue color CCD detector with and without line-centered bandpass interference filters. A method for extending the effective dynamic range of the detector was developed, whereby images obtained with a wide range of exposure times are combined to form a single composite nonsaturated map of the plume emission structure. The line-of-sight measurements were deconvoluted to obtain the true radial intensity distribution with an inverse Abel transformation. Analysis of the inverted measurements indicates that the upper levels of the Balmer alpha and beta transitions are not thermalized with the electrons in the plasma. The local thermodynamic equilibrium assumption fails for this plasma, and the electron temperature is not equivalent to the apparent excitation temperature obtained when a Boltzmann energy distribution is assumed for the atomic hydrogen excited states. C1 UNIV TENNESSEE,INST SPACE,CTR SPACE TRANSPORTAT & APPL RES,TULLAHOMA,TN 37388. ARNOLD ENGN DEV CTR,MICROCRAFT TECHNOL,DEPT FLOW DIAGNOST,ARNOLD AFB,TN 37389. NR 21 TC 2 Z9 2 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUL 20 PY 1995 VL 34 IS 21 BP 4530 EP 4541 PG 12 WC Optics SC Optics GA RL129 UT WOS:A1995RL12900044 PM 21052286 ER PT J AU STRATTON, RF DUPONT, BR OLSEN, AS FERTITTA, A HOYER, M MOORE, CM AF STRATTON, RF DUPONT, BR OLSEN, AS FERTITTA, A HOYER, M MOORE, CM TI INTERSTITIAL DUPLICATION 19P SO AMERICAN JOURNAL OF MEDICAL GENETICS LA English DT Article DE DUPLICATION; SHORT ARM; CHROMOSOME 19; P13.13; P13.2; CONGENITAL HEART DEFECTS; VSD; ASD; MIDLINE FACIAL ANOMALIES AB We report on a 9-month-old girl with an interstitial duplication of 19p, developmental delay, and multiple anomalies including bifrontal prominence, obtuse frontonasal angle, short columella, additional midline philtral pillar, midline ridge on the tongue, vertical midline ridge at the mental symphysis, and a complex congenital heart defect including severe branch pulmonary artery stenosis, secundum atrial septal defect (ASD), and several ventricular septal defects (VSDs). Use of fluorescent in situ hybridization (FISH) with chromosome 19-specific probes showed a direct duplication of bands 19p13.13 and 19p13.2. (C) 1995 Wiley-Liss, Inc. C1 UNIV TEXAS,HLTH SCI CTR,DEPT CELLULAR & STRUCT BIOL,SAN ANTONIO,TX 78284. LAWRENCE LIVERMORE NATL LAB,DIV BIOTECHNOL & BIOMED RES,LIVERMORE,CA. WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX 78236. RP STRATTON, RF (reprint author), UNIV TEXAS,HLTH SCI CTR,S TEXAS GENET CTR,7922 EWING HALSELL,SUITE 410,SAN ANTONIO,TX 78229, USA. NR 6 TC 10 Z9 10 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-7299 J9 AM J MED GENET JI Am. J. Med. Genet. PD JUL 17 PY 1995 VL 57 IS 4 BP 562 EP 564 DI 10.1002/ajmg.1320570409 PG 3 WC Genetics & Heredity SC Genetics & Heredity GA RG342 UT WOS:A1995RG34200008 PM 7573129 ER PT J AU LO, I MITCHEL, WC AHOUJJA, M CHENG, JP FATHIMULLA, A MIER, H AF LO, I MITCHEL, WC AHOUJJA, M CHENG, JP FATHIMULLA, A MIER, H TI 2ND SUBBAND POPULATION IN DELTA-DOPED AL0.48IN0.52AS/GA0.47IN0.53AS HETEROSTRUCTURES (VOL 66, PG 754, 1995) SO APPLIED PHYSICS LETTERS LA English DT Correction, Addition C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. ALLIED SIGNAL AEROSP CO,CTR MICROELECTR & TECHNOL,COLUMBIA,MD 21045. RP LO, I (reprint author), NATL SUN YAT SEN UNIV,DEPT PHYS,KAOHSIUNG 80424,TAIWAN. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUL 17 PY 1995 VL 67 IS 3 BP 444 EP 444 DI 10.1063/1.115559 PG 1 WC Physics, Applied SC Physics GA RK396 UT WOS:A1995RK39600051 ER PT J AU ZUIKER, JR AF ZUIKER, JR TI ANALYSIS OF A PIN-LOADED VISCOPLASTIC PLATE SO COMPUTERS & STRUCTURES LA English DT Article; Proceedings Paper CT 10th ADINA Conference on Nonlinear Finite Element Analysis and ADINA CY JUN 21-23, 1995 CL MIT, CAMBRIDGE, MA HO MIT AB An experimental program has been initiated to measure the response of Timetal(R)21S plates and SCS-6/Timetal(R)21S metal matrix composite (MMC) plates monotonically loaded through a pinned connection at high temperature. A coordinated analytical effort has also been started to model these experiments using the ADINA finite element package and a modified version of the user-defined material module of Kroupa (1993) which incorporates a Bodner-Partom viscoplastic model. Results are presented for the first part of this analytical study, which considered the response of monolithic Timetal(R)21S plates in order to determine the importance of various factors for incorporation into more complex analysis of the MMC plates. Studies were conducted to assess the viability of efficient approximate boundary conditions; the importance of residual thermal stresses induced during heat up prior to mechanical loading; and the accuracy of the material model. Results indicate that detailed modeling of the pin-plate contact surface is required to achieve high accuracy; thermal residual fields in the plate and pin may be neglected; and refinement of the constitutive model is required for improved accuracy. RP ZUIKER, JR (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE WL MLLN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7949 J9 COMPUT STRUCT JI Comput. Struct. PD JUL 17 PY 1995 VL 56 IS 2-3 BP 295 EP 302 DI 10.1016/0045-7949(95)00022-9 PG 8 WC Computer Science, Interdisciplinary Applications; Engineering, Civil SC Computer Science; Engineering GA RE799 UT WOS:A1995RE79900009 ER PT J AU CHABINYC, ML FRATINI, AV SOCCI, EP FARMER, BL BUNNING, TJ ADAMS, WW AF CHABINYC, ML FRATINI, AV SOCCI, EP FARMER, BL BUNNING, TJ ADAMS, WW TI CHOLESTERYL 4-(8-OCTENYLOXY)BENZOATE SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article AB The crystal structure of cholest-5-en-3-yl 4-(8-octenyloxy)benzoate, C42H64O3, was determined by single-crystal X-ray diffraction. The benzoate moiety is twisted 64.6 (2)degrees from the least-squares plane through the tetracyclic core. Elongated molecules pack in an antiparallel fashion. Fully overlapping molecules are related by 2(1) screw sym symmetry. C1 UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903. USAF,WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP CHABINYC, ML (reprint author), UNIV DAYTON,DEPT CHEM,300 COLL PK,DAYTON,OH 45469, USA. RI Chabinyc, Michael/E-2387-2011; Adams, Wade/A-7305-2010 NR 12 TC 2 Z9 2 U1 0 U2 2 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD JUL 15 PY 1995 VL 51 BP 1444 EP 1447 DI 10.1107/S010827019500093X PN 7 PG 4 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA RM234 UT WOS:A1995RM23400084 ER PT J AU HE, GS BHAWALKAR, JD PRASAD, PN REINHARDT, BA AF HE, GS BHAWALKAR, JD PRASAD, PN REINHARDT, BA TI 3-PHOTON-ABSORPTION-INDUCED FLUORESCENCE AND OPTICAL LIMITING EFFECTS IN AN ORGANIC-COMPOUND SO OPTICS LETTERS LA English DT Article ID 3-PHOTON ABSORPTION; SEMICONDUCTORS AB Three-photon-absorption-induced frequency-upconversion fluorescence emission has been observed in a solution of 2,5-benzothiazole 3,4-didecyloxy thiophene (BBTDOT) in tetrahydrofuran, pumped with 10-ns Q-switched 1.06-mu m laser pulses. The spectral peak of the observed fluorescence emission is located in the 450-480-nm range, and the intensity dependence of the visible emission on the IR excitation obeys the cubic law. At a higher solute concentration (0.18 M/L) and moderate IR excitation intensity levels (50-200 MW/cm(2)), obvious optical limiting behavior has been observed as a result of three-photon absorption. The measured nonlinear absorption coefficient and the corresponding molecular three-photon-absorption cross section are gamma = 2.7 x 10(-18) cm(3)/W-2 and sigma(3)' = 8.8 x 10(-76) cm(6)s(2), respectively. C1 USAF,WRIGHT LAB,POLYMER BRANCH,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP HE, GS (reprint author), SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14260, USA. NR 15 TC 110 Z9 116 U1 1 U2 15 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUL 15 PY 1995 VL 20 IS 14 BP 1524 EP 1526 DI 10.1364/OL.20.001524 PG 3 WC Optics SC Optics GA RH691 UT WOS:A1995RH69100004 PM 19862070 ER PT J AU LIU, DW THAXTER, JB BLISS, DF AF LIU, DW THAXTER, JB BLISS, DF TI GIGAHERTZ PLANAR PHOTOCONDUCTING ANTENNA ACTIVATED BY PICOSECOND OPTICAL PULSES SO OPTICS LETTERS LA English DT Article ID MLEK CRYSTAL-GROWTH; SEMICONDUCTOR SURFACES; GENERATION; PHOSPHIDE AB We have generated 1-20-GHz microwave pulses by illuminating an Fe-compensated InP wafer with 50-ps optical pulses at normal incidence. The process of the generation of microwave radiation was monitored and analyzed directly through a 40-GHz sampling oscilloscope with precision. The saturation properties, the waveform evolution, and the optical coupling efficiency of the gigahertz photoconducting antenna are discussed. The flexibility, compactness, and high-resolution features offered by this technique merit new applications for radar communication as well as for other microwave detecting devices. RP LIU, DW (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 15 TC 5 Z9 5 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUL 15 PY 1995 VL 20 IS 14 BP 1544 EP 1546 DI 10.1364/OL.20.001544 PG 3 WC Optics SC Optics GA RH691 UT WOS:A1995RH69100011 PM 19862077 ER PT J AU JAVIDI, B GIANINO, PD RHODES, WT HENDRICKSON, BM AF JAVIDI, B GIANINO, PD RHODES, WT HENDRICKSON, BM TI NONLINEAR TECHNIQUES IN OPTICAL-PATTERN RECOGNITION - INTRODUCTION BY THE FEATURE EDITORS SO APPLIED OPTICS LA English DT Editorial Material AB This feature of Applied Optics is dedicated to research in optical pattern-recognition techniques that utilize nonlinear devices and algorithms. Nonlinearities are employed in a variety of ways in optical pattern recognition and play an important role in both hardware implementation and software development for optical pattern-recognition systems. C1 USAF,ROME LAB,BEDFORD,MA 01731. GEORGIA INST TECHNOL,CTR OPT SCI & ENGN,ATLANTA,GA 30332. ADV RES PROJECTS AGCY,ARLINGTON,VA 22203. RP JAVIDI, B (reprint author), UNIV CONNECTICUT,DEPT ELECT & SYST ENGN,STORRS,CT 06269, USA. NR 21 TC 1 Z9 1 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUL 10 PY 1995 VL 34 IS 20 BP 3856 EP 3857 PG 2 WC Optics SC Optics GA RH839 UT WOS:A1995RH83900001 PM 21052208 ER PT J AU GRYCEWICZ, TJ AF GRYCEWICZ, TJ TI FOURIER-PLANE WINDOWING IN THE BINARY JOINT TRANSFORM CORRELATOR FOR MULTIPLE-TARGET DETECTION SO APPLIED OPTICS LA English DT Article DE JOINT TRANSFORM CORRELATOR; OPTICAL CORRELATION; FOURIER PLANE PROCESSING ID SPATIAL LIGHT-MODULATOR AB With recent advances in state-of-the-art spatial light modulators, the optical joint transform correlator (JTC) and the binary joint transform correlator (BJTC) are becoming practical signal-processing tools. The performance of these devices is limited by the difficulty of separating the cross correlation between the reference and the targets in the scene from signals resulting from cross correlations between objects in the target scene. One technique that reduces this problem is to use a sliding window in the Fourier plane as a convolution mask filter to set an adaptive binarization threshold. This suppresses the autocorrelation response and reduces the dynamic range of the Fourier-plane signal. This results in correlation performance improvement by a factor of 2 to 4. A mathematical model is developed to describe the windowing process for both the JTC and BJTC for the case in which the scene contains multiple targets and background clutter. The derivation of the windowing process is general and includes any spatial high-pass or bandpass filtering in the Fourier plane. The results are supported with experimental data. RP GRYCEWICZ, TJ (reprint author), USAF, ROME LAB, EROP, HANSCOM AFB, BEDFORD, MA 01731 USA. NR 20 TC 12 Z9 12 U1 0 U2 0 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 JUL 10 PY 1995 VL 34 IS 20 BP 3933 EP 3941 PG 9 WC Optics SC Optics GA RH839 UT WOS:A1995RH83900009 PM 21052216 ER PT J AU KHOURY, J GIANINO, PD WOODS, CL AF KHOURY, J GIANINO, PD WOODS, CL TI NEARLY OPTIMAL CORRELATIONS FOR SHIFT-INVARIANT ASSOCIATIVE MEMORIES SO APPLIED OPTICS LA English DT Article ID PHASE-ONLY FILTER; PATTERN-RECOGNITION; DISCRIMINATION; PERFORMANCE AB The optical implementation of the Hopfield algorithm in shift-invariant holographic associative memories is based on the use of correlators with matched filters. However, it is well known that such correlators have poor discrimination. We propose nearly optimal correlation designs for associative memories based on correlation filters that have maximum discrimination ability. These new designs avoid large cross-correlation-peak terms caused by a mismatch between partial input and the fully stored information in the filter. These solutions rely on whitened spectra of the stored and the recalled information. Computer simulations are made of eight different combinations. C1 USAF,ROME LAB,HANSCOM AFB,BEDFORD,MA 01731. RP KHOURY, J (reprint author), TUFTS UNIV,CTR ELECTROOPT,DEPT ELECT ENGN,MEDFORD,MA 02155, USA. NR 24 TC 11 Z9 11 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUL 10 PY 1995 VL 34 IS 20 BP 3971 EP 3980 PG 10 WC Optics SC Optics GA RH839 UT WOS:A1995RH83900013 PM 21052220 ER PT J AU ROGGEMANN, MC WELSH, BM MONTERA, D RHOADARMER, TA AF ROGGEMANN, MC WELSH, BM MONTERA, D RHOADARMER, TA TI METHOD FOR SIMULATING ATMOSPHERIC-TURBULENCE PHASE EFFECTS FOR MULTIPLE TIME SLICES AND ANISOPLANATIC CONDITIONS SO APPLIED OPTICS LA English DT Article ID ADAPTIVE-OPTICS SYSTEMS; REFERENCED SPECKLE-HOLOGRAPHY; IMAGE-RECONSTRUCTION; PERFORMANCE ANALYSIS; ZERNIKE POLYNOMIALS AB Simulating the effects of atmospheric turbulence on optical imaging systems is an important aspect of understanding the performance of these systems. Simulations are particularly important for understanding the statistics of some adaptive-optics system performance measures, such as the mean and variance of the compensated optical transfer function, and for understanding the statistics of estimators used to reconstruct intensity distributions from turbulence-corrupted image measurements. Current methods of simulating the performance of these systems typically make use of random phase screens placed in the system pupil. Methods exist for making random draws of phase screens that have the correct spatial statistics. However, simulating temporal effects and anisoplanatism requires one or more phase screens at different distances from the aperture, possibly moving with different velocities. We describe and demonstrate a method for creating random draws of phase screens with the correct. space-time statistics for arbitrary turbulence and wind-velocity profiles, which can be placed in the telescope pupil in simulations. Results are provided for both the von Karman and the Kolmogorov turbulence spectra. We also show how to simulate anisoplanatic effects with this technique. C1 UNIV DAYTON,DEPT ENGN PHYS,DAYTON,OH 45469. UNIV DAYTON,DEPT ELECT & COMP ENGN,DAYTON,OH 45469. UNIV DAYTON,DEPT APPL PHYS,DAYTON,OH 45469. RP ROGGEMANN, MC (reprint author), USAF,INST TECHNOL,GRAD SCH ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 37 TC 29 Z9 29 U1 3 U2 4 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD JUL 10 PY 1995 VL 34 IS 20 BP 4037 EP 4051 PG 15 WC Optics SC Optics GA RH839 UT WOS:A1995RH83900020 PM 21052227 ER PT J AU REA, MA BARRERA, J GLASS, JD GANNON, RL AF REA, MA BARRERA, J GLASS, JD GANNON, RL TI SEROTONERGIC POTENTIATION OF PHOTIC PHASE-SHIFTS OF THE CIRCADIAN ACTIVITY RHYTHM SO NEUROREPORT LA English DT Article DE SUPRACHIASMATIC NUCLEI; CIRCADIAN RHYTHM; PHOTIC ENTRAINMENT; SEROTONIN; 5-HT1A RECEPTOR; 5-HT7 RECEPTOR ID SUPRACHIASMATIC NUCLEI; ASCENDING PROJECTIONS; RAT; LIGHT; AGONISTS; INVITRO; RAPHE; EXPRESSION; DEPLETION; HAMSTERS AB RECENT evidence suggests that serotonin may function to regulate the sensitivity of the circadian clock to the resetting effect of environmental light. Here we report that systemic administration of NAN-190, a drug that acts at both postsynaptic and somatodendritic serotonin receptors, potentiates light-induced phase shifts by as much as 250%. The effects of the drug are dose-related and are significant at light intensities between 0.2 and 200 lux. It is proposed that drugs with pharmacological properties similar to NAN-190 may prove useful as chronobiologics to adjust the sensitivity of the circadian system to natural 'zeitgebers'. C1 KENT STATE UNIV,DEPT BIOL,KENT,OH 44242. RP REA, MA (reprint author), ARMSTRONG LAB,CFTO,BIOL RHYTHMS & INTEGRAT NEUROSCI RES INST,2504 GILLINGHAM DR,SUITE 1,BROOKS AFB,TX 78235, USA. NR 25 TC 48 Z9 49 U1 0 U2 0 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0959-4965 J9 NEUROREPORT JI Neuroreport PD JUL 10 PY 1995 VL 6 IS 10 BP 1417 EP 1420 DI 10.1097/00001756-199507100-00014 PG 4 WC Neurosciences SC Neurosciences & Neurology GA RL348 UT WOS:A1995RL34800014 PM 7488738 ER PT J AU HAUPT, RL AF HAUPT, RL TI OPTIMUM QUANTIZED LOW SIDELOBE PHASE TAPERS FOR ARRAYS SO ELECTRONICS LETTERS LA English DT Article DE ANTENNA PHASED ARRAYS; GENETIC ALGORITHMS; ANTENNA ARRAYS AB A genetic algorithm is used to find optimum quantised low sidelobe phase tapers for linear arrays of point sources. This method has the advantage that the optimum taper is found in quantised phase space rather than in continuous phase space. RP HAUPT, RL (reprint author), USAF ACAD,DEPT ELECT ENGN,DFEE,HQ,2354 FAIRCHILD DR,SUITE 2F6,COLORADO SPRINGS,CO 80840, USA. NR 3 TC 15 Z9 15 U1 0 U2 0 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD JUL 6 PY 1995 VL 31 IS 14 BP 1117 EP 1118 DI 10.1049/el:19950786 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA RL032 UT WOS:A1995RL03200004 ER PT J AU MANTZ, RA TRULOVE, PC CARLIN, RT OSTERYOUNG, RA AF MANTZ, RA TRULOVE, PC CARLIN, RT OSTERYOUNG, RA TI ROESY NMR OF BASIC AMBIENT-TEMPERATURE CHLOROALUMINATE IONIC LIQUIDS SO INORGANIC CHEMISTRY LA English DT Note ID MOLTEN-SALTS; SPECTROSCOPY; CHLORIDE AB ROESY NMR of an AlCl3-1-ethyl-3-methylimidazolium chloride (ImCl) molten salt containing excess ImCl has been examined, and estimates of intermolecular distances and of the structure-making intermolecular interactions are presented. C1 N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695. USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. USAF ACAD,COLORADO SPRINGS,CO 80840. NR 12 TC 37 Z9 38 U1 1 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0020-1669 J9 INORG CHEM JI Inorg. Chem. PD JUL 5 PY 1995 VL 34 IS 14 BP 3846 EP 3847 DI 10.1021/ic00118a042 PG 2 WC Chemistry, Inorganic & Nuclear SC Chemistry GA RH642 UT WOS:A1995RH64200042 ER PT J AU HOFF, J KIM, S ERDTMANN, M WILLIAMS, R PIOTROWSKI, J BIGAN, E RAZEGHI, M BROWN, GJ AF HOFF, J KIM, S ERDTMANN, M WILLIAMS, R PIOTROWSKI, J BIGAN, E RAZEGHI, M BROWN, GJ TI BACKGROUND LIMITED PERFORMANCE IN P-DOPED GAAS/GA0.71IN0.29AS0.39P0.61 QUANTUM-WELL INFRARED PHOTODETECTORS SO APPLIED PHYSICS LETTERS LA English DT Article ID SUPERLATTICES C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WL MLPO,WRIGHT PATTERSON AFB,OH 45433. RP HOFF, J (reprint author), NORTHWESTERN UNIV,CTR QUANTUM DEV,DEPT ELECT ENGN & COMP SCI,EVANSTON,IL 60208, USA. RI Razeghi, Manijeh/B-7265-2009 NR 7 TC 4 Z9 4 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUL 3 PY 1995 VL 67 IS 1 BP 22 EP 24 DI 10.1063/1.115479 PG 3 WC Physics, Applied SC Physics GA RF829 UT WOS:A1995RF82900008 ER PT J AU LINDSLEY, DH BRASS, DJ THOMAS, JB AF LINDSLEY, DH BRASS, DJ THOMAS, JB TI EFFICACY-PERFORMANCE SPIRALS - A MULTILEVEL PERSPECTIVE SO ACADEMY OF MANAGEMENT REVIEW LA English DT Review ID SELF-REGULATORY MECHANISMS; COMPLEX DECISION-MAKING; ORGANIZATIONAL PERFORMANCE; MANAGEMENT; BEHAVIOR; IMPACT; MODEL; ATTRIBUTIONS; DETERMINANTS; PERSISTENCE AB This article explores the possibility of efficacy-perfonnance spirals in individuals, groups. and organizations. Spirals are deviation-amplifying loops in which the positive, cyclic relationship between perceived efficacy and performance builds upon itself. Collective efficacy is defined, and upward and downward spirals am considered. Evidence from multiple levels of analysis Is presented, and factors affecting the occurrence, continuation, and stopping of spirals am proposed. In addition, we consider compositional and cross-level effects by proposing factors that will moderate the relationship between spirals at different levels of analysis. Overall. 15 propositions are presented cia guidelines for future research. C1 PENN STATE UNIV,SMEAL COLL BUSINESS ADM,PHILADELPHIA,PA. USAF,WASHINGTON,DC 20330. NR 118 TC 336 Z9 347 U1 7 U2 40 PU ACAD MANAGEMENT PI ADA PA PO BOX 39 300 SOUTH UNION STREET, ADA, OH 45810-0039 SN 0363-7425 J9 ACAD MANAGE REV JI Acad. Manage. Rev. PD JUL PY 1995 VL 20 IS 3 BP 645 EP 678 DI 10.2307/258790 PG 34 WC Business; Management SC Business & Economics GA RJ622 UT WOS:A1995RJ62200007 ER PT J AU STAMATAKOS, MD HOUSTON, GD FOWLER, CB BOYD, E SOLANKI, PH AF STAMATAKOS, MD HOUSTON, GD FOWLER, CB BOYD, E SOLANKI, PH TI DIAGNOSIS OF AMELOBLASTOMA OF THE MAXILLA BY FINE-NEEDLE ASPIRATION - A CASE-REPORT SO ACTA CYTOLOGICA LA English DT Note DE AMELOBLASTOMA; MAXILLA; ASPIRATION BIOPSY AB Ameloblastoma is a tumor of odontogenic epithelium that occurs in the jaws. We describe a case of an ameloblastoma of the maxilla that was diagnosed by fine needle aspiration cytology. The patient presented with a mass in the left maxillary sinus. Cytologic examination of the aspirate material showed numerous sheets of tightly packed basaloid cells. Several sheets of cells; were surrounded by a row of columnar cells, with the nuclei oriented away from the basement membrane (peripheral palisading). Histologic examination of the resection specimen confirmed the presence of an ameloblastoma of the maxilla. C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. NR 16 TC 14 Z9 15 U1 0 U2 1 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0001-5547 J9 ACTA CYTOL JI Acta Cytol. PD JUL-AUG PY 1995 VL 39 IS 4 BP 817 EP 820 PG 4 WC Pathology SC Pathology GA RM709 UT WOS:A1995RM70900037 PM 7631563 ER PT J AU POMFRET, CJ AF POMFRET, CJ TI PROBABILISTIC CONCEPTS FOR GAS-TURBINE ENGINE MANAGEMENT SO AEROSPACE ENGINEERING LA English DT Article RP POMFRET, CJ (reprint author), ROYAL AF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU SOC AUTOMOTIVE ENG INC PI WARRENDALE PA 400 COMMONWEALTH DRIVE, WARRENDALE, PA 15096 SN 0736-2536 J9 AEROSPACE ENG JI Aerosp. Eng. PD JUL PY 1995 VL 15 IS 7 BP 9 EP 12 PG 4 WC Engineering, Aerospace SC Engineering GA RJ958 UT WOS:A1995RJ95800008 ER PT J AU BOWERSOX, RDW SCHETZ, JA CHADWICK, K DEIWERT, S AF BOWERSOX, RDW SCHETZ, JA CHADWICK, K DEIWERT, S TI TECHNIQUE FOR DIRECT MEASUREMENT OF SKIN FRICTION IN HIGH ENTHALPY IMPULSIVE SCRAMJET FLOWFIELDS SO AIAA JOURNAL LA English DT Article AB A new technique was developed that allowed the direct measurement of skin friction on the walls of the inlet and combustion chamber associated with two scramjet models being tested in two hypersonic impulse facilities. The scramjet experiments took place in both the NASA Ames 16-in. high-enthalpy hypersonic and the CALSPAN 96-in. shock tunnels. Flight Mach number conditions of 12-16 were tested. Miniature, plastic, cantilever skin friction sensors were developed for the present tests. The use of plastic provided the necessary high-frequency response, high-shear sensitivity, and low-thermal sensitivity. The cantilever design was incorporated to minimize the gauge sensitivity to normal pressure. The gauge performance was found to be excellent for a variety of controlled evaluation experiments, where the results agreed very well with other independent direct measurements and accepted empirical correlations. The gauge also proved to be accurate and reliable in th two impulsive scramjet experiments. C1 VIRGINIA POLYTECH INST & STATE UNIV,DEPT AEROSP & OCEAN ENGN,BLACKSBURG,VA 24061. CALSPAN ADV TECHNOL CTR,DIV SPACE TECHNOL,BUFFALO,NY 14225. NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP BOWERSOX, RDW (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 8 Z9 8 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUL PY 1995 VL 33 IS 7 BP 1286 EP 1291 DI 10.2514/3.12677 PG 6 WC Engineering, Aerospace SC Engineering GA RG319 UT WOS:A1995RG31900014 ER PT J AU ELDRED, MS VENKAYYA, VB ANDERSON, WJ AF ELDRED, MS VENKAYYA, VB ANDERSON, WJ TI NEW MODE TRACKING METHODS IN AEROELASTIC ANALYSIS SO AIAA JOURNAL LA English DT Article AB Within the context of analysis of finite element models, a methodology is developed for the tracking of complex eigenvalues and eigenvectors through changes in aeroelastic eigenvalue problems. The goal is to eliminate difficulties caused by mode switching (i.e., frequency crossing). Two new methods for mode tracking are presented and compared with an existing method. The first new method, the complex higher order eigenpair perturbation algorithm, is based on a perturbation expansion of the eigenproblem. It iteratively computes changes in the eigenpairs due to parameter perturbations with the important feature of maintaining the correspondence between the baseline and perturbed eigenpairs. The second new method is the complex cross-orthogonality check method which uses mass biorthogonality of the left and right eigenvectors to re-establish correspondence after a standard reanalysis. Applications of mode tracking technology are presented in V-g and p-k subsonic aeroelastic analyses. Each application procedure is outlined and examples are given. Recommendations are made based on method ease of use and robustness in the example problems. C1 UNIV MICHIGAN,DEPT AEROSP ENGN,ANN ARBOR,MI 48109. USAF,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 17 TC 5 Z9 7 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD JUL PY 1995 VL 33 IS 7 BP 1292 EP 1299 DI 10.2514/3.12552 PG 8 WC Engineering, Aerospace SC Engineering GA RG319 UT WOS:A1995RG31900015 ER PT J AU KVETON, JF FRIEDMAN, CD COSTANTINO, PD AF KVETON, JF FRIEDMAN, CD COSTANTINO, PD TI INDICATIONS FOR HYDROXYAPATITE CEMENT RECONSTRUCTION IN LATERAL SKULL BASE SURGERY SO AMERICAN JOURNAL OF OTOLOGY LA English DT Article; Proceedings Paper CT Annual Meeting of the American-Otological-Society CY MAY 07-08, 1994 CL PALM BEACH, FL SP Amer Otol Soc AB Preliminary data on the use of hydroxyapatite cement to restore cranial bone integrity has shown excellent results. Cranial base reconstruction has been accomplished for translabyrinthine, middle cranial fossa, and suboccipital craniectomy defects, as well as extensive temporal bone fractures. Fifteen patients have been followed for up to 2 years with no evidence of complication from use of the hydroxyapatite cement. Exposure to cerebrospinal fluid does not appear to alter its stability, and pre-existing infection appears to be the only contraindication to its use. Stability of the cement has been confirmed by serial radiographic analyses. This paper reviews the chemical structure and bioactivity of hydroxyapatite cement and employs case studies to illustrate the applications of this new biomaterial in lateral skull base surgery. C1 USAF,WILFORD HALL MED CTR,DEPT OTOLARYNGOL,LACKLAND AFB,TX. RP KVETON, JF (reprint author), YALE UNIV,SCH MED,OTOLARYNGOL SECT,333 CEDAR ST,POB 208041,NEW HAVEN,CT 06520, USA. NR 2 TC 66 Z9 68 U1 0 U2 1 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0192-9763 J9 AM J OTOL JI Am. J. Otol. PD JUL PY 1995 VL 16 IS 4 BP 465 EP 469 PG 5 WC Otorhinolaryngology SC Otorhinolaryngology GA RG142 UT WOS:A1995RG14200010 PM 8588646 ER PT J AU KERR, SF MCHUGH, CP DRONEN, NO AF KERR, SF MCHUGH, CP DRONEN, NO TI LEISHMANIASIS IN TEXAS - PREVALENCE AND SEASONAL TRANSMISSION OF LEISHMANIA-MEXICANA IN NEOTOMA-MICROPUS SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID PSYCHODIDAE; DIPTERA AB The annual prevalence of Leishmania mexicana in Neotoma micropus from 16 southern Texas localities was determined by screening 192 N. micropus using in vitro culture. Eight woodrats also were screened using the polymerase chain reaction (PCR). Forty-six Sigmodon hispidus from four localities were also tested. Seasonal transmission was investigated through trap-recapture studies at three localities and analysis of infections in juveniles. Fourteen N. micropus from four localities were culture-positive for L. mexicana, indicating an annual non-zero prevalence at these localities of 5.6-27%. Four additional infections at two foci were detected only by the PCR. Transmission occurred in the fall in each case in which season of transmission could be determined. No S. hispidus were positive. These data support the hypothesis that N. micropus is a reservoir of L. mexicana in Texas. C1 ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,BROOKS AFB,TX 78235. TEXAS A&M UNIV,DEPT WILDLIFE & FISHERIES SCI,COLLEGE STN,TX 77843. RP KERR, SF (reprint author), INCARNATE WORD COLL,BOX T-2,SAN ANTONIO,TX 78209, USA. NR 23 TC 32 Z9 34 U1 0 U2 1 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD JUL PY 1995 VL 53 IS 1 BP 73 EP 77 PG 5 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA RL499 UT WOS:A1995RL49900014 PM 7625538 ER PT J AU XIA, XG SUTER, BW AF XIA, XG SUTER, BW TI A FAMILY OF 2-DIMENSIONAL NONSEPARABLE MALVAR WAVELETS SO APPLIED AND COMPUTATIONAL HARMONIC ANALYSIS LA English DT Article ID TRANSFORMS AB Malvar wavelets or lapped orthogonal transform (LOT) has been recognized as a useful tool in eliminating blocking effects in transform coding. Recently, it has been also extended to more general forms, which enable one to construct an orthonormal basis from arbitrary local orthonormal bases on different intervals. In this paper, we study two-dimensional cases and construct nonseparable Malvar wavelets, which are potentially important in multidimensional signal analysis. With nonseparable Malvar wavelets, we then construct nonseparable Lemarie-Meyer wavelets which are band-limited. We discuss the implementation and applications of nonseparable Malvar wavelets in image processing. Finally, we present several numerical examples. (C) 1995 Academic Press, Inc. RP XIA, XG (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 6 Z9 7 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 1063-5203 J9 APPL COMPUT HARMON A JI Appl. Comput. Harmon. Anal. PD JUL PY 1995 VL 2 IS 3 BP 243 EP 256 DI 10.1006/acha.1995.1017 PG 14 WC Mathematics, Applied; Physics, Mathematical SC Mathematics; Physics GA RK537 UT WOS:A1995RK53700004 ER PT J AU HOLT, MRM AF HOLT, MRM TI REFLECTIONS OF A FLIGHT NURSE CLINICAL COORDINATOR SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Editorial Material RP HOLT, MRM (reprint author), USAF,SCH AEROSP MED,NC,USAFSAM AN,FLIGHT NURSE SECT,8005 LINDBERG DR,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1995 VL 66 IS 7 BP 702 EP 703 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RE623 UT WOS:A1995RE62300015 ER PT J AU SORTMAN, DC AF SORTMAN, DC TI THE USAF AMBULANCE SYSTEM SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Letter RP SORTMAN, DC (reprint author), USAF,HAMPTON,VA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUL PY 1995 VL 66 IS 7 BP 705 EP 705 PG 1 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RE623 UT WOS:A1995RE62300017 PM 7575323 ER PT J AU BRUNO, JG MAYO, MW AF BRUNO, JG MAYO, MW TI A COLOR IMAGE-ANALYSIS METHOD FOR ASSESSMENT OF GERMINATION BASED ON DIFFERENTIAL FLUORESCENCE STAINING OF BACTERIAL-SPORES AND VEGETATIVE CELLS USING ACRIDINE-ORANGE SO BIOTECHNIC & HISTOCHEMISTRY LA English DT Article DE ACRIDINE ORANGE; BACTERIA; SPORES; GERMINATION; COMPUTER ANALYSIS; IMAGE ANALYSIS; FLUORESCENCE; BACILLUS ID BACILLUS-SUBTILIS SPORES; GLUCOSE-DEHYDROGENASE AB Color fluorescence image analysis of acridine orange (AO) stained germinating Bacillus subtilis var, niger bacteria revealed a cell population initially dominated by small green spores followed by the emergence of at least three additional discernible subpopulations in response to stimulation with D-glucose, These subpopulations were small, round or oblong red cells; intermediate to large metachromatic cells; and large red rods, Large green rods were rarely observed, An increase in red emissions (i.e., putative RNA synthesis) was sometimes seen as early as 90 min after exposure to D-glucose and uptake of AO at room temperature, This may represent either metabolic recovery from Quiescence or RNA synthesis associated with germination, In the absence of D-glucose, or using autoclaved bacteria in the presence of glucose, no relative increase in the red signal was observed despite hours of observation. Digital image analysis was used for relative measurement of red, green and blue signals and to correlate the size of various subpopulations with their fluorescence color emissions over time, Image analysis demonstrated a trend toward increasing size and red emission in the presence of glucose, The average Fed emission was found to be a good discriminator of the various subpopulations, while the average green emission was approximately equal among the subpopulations making it a poor discriminator, These data suggest that AO staining might be used for rapid computer-assisted discrimination of spores vs, vegetative cells. RP BRUNO, JG (reprint author), USA,EDGEWOOD RES DEV & ENGN CTR,SCBRD RTE,USAF,ARMSTRONG LAB,CREWE SYST DIRECTORATE,BLDG E3549,ABERDEEN PROVING GROUND,MD 21010, USA. NR 38 TC 9 Z9 9 U1 0 U2 1 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 1052-0295 J9 BIOTECH HISTOCHEM JI Biotech. Histochem. PD JUL PY 1995 VL 70 IS 4 BP 175 EP 184 DI 10.3109/10520299509107309 PG 10 WC Biotechnology & Applied Microbiology; Cell Biology SC Biotechnology & Applied Microbiology; Cell Biology GA TC464 UT WOS:A1995TC46400003 PM 8580199 ER PT J AU WARREN, RQ WONG, MT MELCHER, GP BLATT, SP ZAPIOLA, I BOUZAS, MB MUCHINIK, G ANDERSON, SA KENNEDY, RC AF WARREN, RQ WONG, MT MELCHER, GP BLATT, SP ZAPIOLA, I BOUZAS, MB MUCHINIK, G ANDERSON, SA KENNEDY, RC TI PRESENCE OF NEUTRALIZING ANTIBODIES TO HETEROLOGOUS HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 ISOLATES IN SERA OF INFECTED INDIVIDUALS IS NOT PREDICTIVE OF RATE OF DISEASE PROGRESSION SO CLINICAL AND DIAGNOSTIC LABORATORY IMMUNOLOGY LA English DT Article ID HIV-1 GP160 EPITOPES; IMMUNE-RESPONSE; CHIMPANZEES; PROTECTION; CHALLENGE; IMMUNIZATION; EXPRESSION; PATTERNS; VACCINE; GP120 AB These studies were undertaken to examine whether the presence of human immunodeficiency virus type 1 (HIV-1)-neutralizing antibodies in sera of infected individuals would alter the rate of disease progression. HIV-1-infected individuals (n = 87) were initially examined for neutralizing activity in vitro against both laboratory and tissue culture-adapted clinical heterologous HIV-1 isolates. The neutralizing activities of sera were determined by a 90% or greater reduction in HIV-1 p24 levels in vitro. In a cross-sectional analysis of all infected individuals, we observed that sera from asymptomatic individuals neutralized a significantly greater number of heterologous HIV-1 isolates than sera from symptomatic patients. Patients who could be followed up longitudinally (n = 24) were then studied to determine the impact of neutralizing antibodies on the rate of disease progression. We observed no significant difference between the numbers of HIV-1 isolates neutralized in vitro by sera from patients who remained clinically stable and by those from patients who progressed rapidly. Our data indicated that the presence or absence of neutralizing antibodies to heterologous HIV-1 isolates was not associated with the rate of disease progression. C1 SW FDN BIOMED RES,DEPT VIROL & IMMUNOL,SAN ANTONIO,TX 78228. SW FDN BIOMED RES,CTR AIDS RES,SAN ANTONIO,TX 78228. USAF,MED CTR,DEPT INFECT DIS,LACKLAND AFB,TX 78236. HOSP NINOS DR RICARDO GUTIERREZ,TRABAJO SIDA PEDIAT GRP,AREA DIAGNOST,BUENOS AIRES,DF,ARGENTINA. FU NCI NIH HHS [N01-CA-74101]; NIAID NIH HHS [AI 26462, AI 28696] NR 24 TC 2 Z9 2 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 1071-412X J9 CLIN DIAGN LAB IMMUN JI Clin. Diagn. Lab. Immunol. PD JUL PY 1995 VL 2 IS 4 BP 400 EP 403 PG 4 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RJ987 UT WOS:A1995RJ98700003 PM 7583913 ER PT J AU KATTA, VR ROQUEMORE, WM AF KATTA, VR ROQUEMORE, WM TI NUMERICAL-STUDIES ON THE STRUCTURE OF 2-DIMENSIONAL H-2/AIR PREMIXED JET FLAME SO COMBUSTION AND FLAME LA English DT Article ID DIFFUSION FLAME; COMBUSTION AB The burning characteristics of a premixed, H-2/air Bunsen-type flame are investigated using a time-dependent, axisymmetric numerical model with variable transport properties and a detailed-chemical-kinetics mechanism. The temperature, species concentration, and velocity fields are investigated under fuel-lean, stoichiometric, and fuel-rich conditions. The calculations show that under fuel-lean conditions the flame exhibits the ''tip-opening'' phenomenon, while under fuel-rich condition the tip of the flame burns intensely. These results are in agreement with the experimental findings of Mizomoto et al. who have suggested that the tip-opening phenomenon results from the nonunity Lewis number. To further investigate the impact of local Lewis number on the premixed-flame structure, numerical experiments are performed by modifying the local Lewis numbers of the individual species. Results for the fuel-lean condition confirm that the local Lewis number is responsible for the tip-opening phenomenon. Indeed, when the local Lewis number is set equal to 2, the burning pattern of the fuel-lean premixed flame resembles that of a fuel-rich flame with a closed tip. The spatial distributions of NO in the fuel-lean, stoichiometric, and fuel-rich flames are also examined. Under the fuel-lean and stoichiometric conditions, the NO is formed along the high-temperature cone of the flame, as expected. In the fuel-rich case, a dual flame structure is observed. The NO production occurs primarily in the secondary ''diffusion'' flame which is established at the interface of the excess fuel and ambient oxygen. Buoyancy-induced toroidal vortices are found to form in the vertically mounted premixed flames. However, the dynamic characteristics of a premixed flame, in contrast to those of a jet diffusion flame, are observed to be dependent on the inlet velocity profile of the fuel jet. C1 AERO PROP & POWER DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP KATTA, VR (reprint author), SYST RES LABS INC,DIV CALSPAN CORP,2800 INDIAN RIPPLE RD,DAYTON,OH 45440, USA. NR 32 TC 30 Z9 31 U1 1 U2 6 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0010-2180 J9 COMBUST FLAME JI Combust. Flame PD JUL PY 1995 VL 102 IS 1-2 BP 21 EP 40 DI 10.1016/0010-2180(94)00227-J PG 20 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA RG615 UT WOS:A1995RG61500003 ER PT J AU BLECKMANN, CA RABE, B EDGMON, SJ FILLINGAME, D AF BLECKMANN, CA RABE, B EDGMON, SJ FILLINGAME, D TI AQUATIC TOXICITY VARIABILITY FOR FRESHWATER AND SALTWATER SPECIES IN REFINERY WASTE-WATER EFFLUENT SO ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY LA English DT Article DE REFINERY EFFLUENT; MYSIDOPSIS BAHIA; TOXICITY REDUCTIONS; MICROTOX AB The U.S. Environmental Protection Agency (EPA) has established test requirements for toxicity reduction or toxicity identification evaluations (TR/TIE) of wastewater effluents. Interpretations of test results are complicated by factors other than toxicity when essentially freshwater wastewaters flow into estuaries and the effluent permit requires marine organisms for testing. This paper reports the results of an investigation of potential freshwater surrogate species, and Microtox(R), for use in such a TLE. Of the five species tested, mysid shrimp were found to be most sensitive to unidentified toxicants in petroleum refinery wastewater. No strong correlations of this sensitivity to that of other organisms, or to several wastewater constituents, were identified. The two marine species specified in the effluent permit were more sensitive to the toxicants than were the freshwater species. C1 C K ASSOCIATES INC,BATON ROUGE,LA 70810. CONOCO INC,PONCA CITY,OK 74603. HESS OIL VIRGIN ISL CORP,ST CROIX,VI 00851. RP BLECKMANN, CA (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. RI Nguyen, Lich/F-6231-2010 NR 6 TC 10 Z9 10 U1 1 U2 2 PU SETAC PRESS PI PENSACOLA PA 1010 NORTH 12TH AVE, PENSACOLA, FL 32501-3370 SN 0730-7268 J9 ENVIRON TOXICOL CHEM JI Environ. Toxicol. Chem. PD JUL PY 1995 VL 14 IS 7 BP 1219 EP 1223 DI 10.1897/1552-8618(1995)14[1219:ATVFFA]2.0.CO;2 PG 5 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA RE415 UT WOS:A1995RE41500014 ER PT J AU KBURNES, MD AF KBURNES, MD TI CLAUSEWITZ, BUT NO CIGAR SO FOREIGN AFFAIRS LA English DT Letter C1 UNIV NEW MEXICO,ALBUQUERQUE,NM 87131. RP KBURNES, MD (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COUNC FOREIGN RELAT INC PI NEW YORK PA 58 E 68TH ST, NEW YORK, NY 10021 SN 0015-7120 J9 FOREIGN AFF JI Foreign Aff. PD JUL-AUG PY 1995 VL 74 IS 4 BP 167 EP 167 PG 1 WC International Relations SC International Relations GA RE866 UT WOS:A1995RE86600092 ER PT J AU KUNDROTAS, LW YOUNG, GS LANG, KA WOODS, JA AF KUNDROTAS, LW YOUNG, GS LANG, KA WOODS, JA TI FELINIZATION OF THE ESOPHAGUS SO GASTROINTESTINAL ENDOSCOPY LA English DT Article ID TRANSVERSE FOLDS; ASSOCIATION; REFLUX AB Transient transverse folds of the esophageal mucosa as seen by barium esophagography and on endoscopic examination have been termed ''felinization.'' This finding has been considered a normal variant or has been associated with reflux esophagitis. No symptoms have been associated with its presence. In 280 unselected patients undergoing upper gastrointestinal endoscopy in our clinic, felinization was identified in 24% by prospective visual examination. It was not correlated with sex, age, symptom complex, or common coexistent endoscopic findings. These transverse esophageal folds, although visually interesting, appear to have no clinical significance. The endoscopist should recognize and differentiate them from fixed or persistent folds that can be associated with mucosal disease. C1 WILFORD HALL USAF MED CTR,DEPT GASTROENTEROL,DIV MED,LACKLAND AFB,TX. NR 12 TC 4 Z9 4 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0016-5107 J9 GASTROINTEST ENDOSC JI Gastrointest. Endosc. PD JUL PY 1995 VL 42 IS 1 BP 37 EP 40 DI 10.1016/S0016-5107(95)70240-7 PG 4 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA RJ794 UT WOS:A1995RJ79400007 PM 7557174 ER PT J AU SCOTT, RT OPSAHL, MS LEONARDI, MR NEALL, GS ILLIONS, EH NAVOT, D AF SCOTT, RT OPSAHL, MS LEONARDI, MR NEALL, GS ILLIONS, EH NAVOT, D TI LIFE TABLE ANALYSIS OF PREGNANCY RATES IN A GENERAL INFERTILITY POPULATION RELATIVE TO OVARIAN RESERVE AND PATIENT AGE SO HUMAN REPRODUCTION LA English DT Article DE CLOMIPHENE CITRATE; MATERNAL AGE; OVARIAN RESERVE; OVARY; PREGNANCY RATES ID STIMULATING-HORMONE LEVEL; CITRATE CHALLENGE TEST; INVITRO FERTILIZATION; FERTILITY; OLDER AB This study evaluated the impact of age and ovarian reserve status on cumulative pregnancy rates, Approximately 1200 women from a general infertile population underwent ovarian reserve screening with the clomiphene citrate challenge test in the first few months of their initial evaluation, All patients then underwent a thorough infertility evaluation with therapy appropriate for their specific diagnoses. Patients with evidence of tubal disease, peritoneal adhesive disease, or male factor were eliminated. The 588 remaining patients were evaluated based on their age and ovarian reserve status, and their long-term pregnancy rates were compared using life table analyses. There was a dramatic decrease in pregnancy rates associated with an abnormal clomiphene citrate challenge test which was uniformly poor independent of age. Patients with normal ovarian reserve had much higher pregnancy rates, but a significant age-related decline in pregnancy rates was clearly identified. We conclude that women with evidence of diminished ovarian reserve have uniformly poor pregnancy rates independent of their age, but that age remains an important prognostic factor among those with a normal ovarian reserve, The combined use of maternal age and ovarian reserve screening should be used when counselling individual patients regarding their long-term prognoses for conception. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNAECOL,LACKLAND AFB,TX 78236. GENET & IVF INST,FAIRFAX,VA 22039. UNIV FLORIDA,MED CTR,DEPOBS,JACKSONVILLE,FL 32209. NEW YORK MED COLL,DEPT OBSTET & GYNAECOL,VALHALLA,NY 10595. OI Opsahl, Michael/0000-0002-8754-7943 NR 18 TC 117 Z9 121 U1 0 U2 3 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0268-1161 J9 HUM REPROD JI Hum. Reprod. PD JUL PY 1995 VL 10 IS 7 BP 1706 EP 1710 PG 5 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA RP657 UT WOS:A1995RP65700018 PM 8582965 ER PT J AU SEAMANS, TW HAMERSHOCK, DW BERNHARDT, GE AF SEAMANS, TW HAMERSHOCK, DW BERNHARDT, GE TI DETERMINATION OF BODY DENSITY FOR 12 BIRD SPECIES SO IBIS LA English DT Note C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP SEAMANS, TW (reprint author), USDA,DENVER WILDLIFE RES CTR,6100 COLUMBUS AVE,SANDUSKY,OH 44870, USA. NR 22 TC 10 Z9 10 U1 0 U2 2 PU BRITISH ORNITHOLOGISTS UNION PI TRING PA C/O NATURAL HISTORY MUSEUM, SUB-DEPT ORNITHOLOGY, TRING, HERTS, ENGLAND HP23 6AP SN 0019-1019 J9 IBIS JI Ibis PD JUL PY 1995 VL 137 IS 3 BP 424 EP 428 PG 5 WC Ornithology SC Zoology GA RK860 UT WOS:A1995RK86000022 ER PT J AU SIMPSON, TB LIU, JM AF SIMPSON, TB LIU, JM TI BANDWIDTH ENHANCEMENT AND BROAD-BAND NOISE-REDUCTION IN INJECTION-LOCKED SEMICONDUCTOR-LASERS SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article ID EXTERNAL LIGHT INJECTION AB Injection locking of a semiconductor laser can significantly improve the broadband modulation characteristics. By adjusting the frequency offset between the master laser and the slave laser, improved modulation bandwidth or flatness of the modulation response can be emphasized. The improved modulation characteristics are accompanied by reduced broad-band relative intensity noise, Our calculations predict that the parasitic-free modulation bandwidths can be enhanced above the theoretical limit for the free-running laser. C1 UNIV CALIF LOS ANGELES,DEPT ELECT ENGN,LOS ANGELES,CA 90024. USAF,PHILLIPS LAB,CTR NONLINEAR OPT,KIRTLAND AFB,NM 87117. RP SIMPSON, TB (reprint author), JAYCOR,SAN DIEGO,CA 92186, USA. NR 15 TC 123 Z9 124 U1 0 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD JUL PY 1995 VL 7 IS 7 BP 709 EP 711 DI 10.1109/68.393181 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RH308 UT WOS:A1995RH30800005 ER PT J AU GUBIN, MA KIREEV, AN KOVALCHUK, EV TYURIKOV, DA DEPATIE, D AF GUBIN, MA KIREEV, AN KOVALCHUK, EV TYURIKOV, DA DEPATIE, D TI RBCL-LI COLOR-CENTER LASER WITH LASER-DIODE PUMPING SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article AB CW operation of a RbCl:Li-F-A (II) laser has been obtained under pumping by a red laser diode. Pump power at threshold is 90 mW. Single frequency operation of the color center laser has been achieved. The intensity noise generated by two pump sources (laser diode and Kr-ion laser) is compared. C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. RP GUBIN, MA (reprint author), PN LEBEDEV PHYS INST,LENINSKY PROSPECT 53,MOSCOW 117924,RUSSIA. RI Kireev, Alexey/M-7377-2015; Tyurikov, Dmitry/B-7467-2016; Kovalchuk, Evgeny/C-2328-2016 NR 8 TC 5 Z9 5 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD JUL PY 1995 VL 7 IS 7 BP 745 EP 747 DI 10.1109/68.393192 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RH308 UT WOS:A1995RH30800017 ER PT J AU THOMASON, RW RUSH, W DAVE, H AF THOMASON, RW RUSH, W DAVE, H TI TRANSITIONAL-CELL CARCINOMA ARISING WITHIN A PARATUBAL CYST - REPORT OF A CASE SO INTERNATIONAL JOURNAL OF GYNECOLOGICAL PATHOLOGY LA English DT Note DE OVARY; BROAD LIGAMENT; TRANSITIONAL CELL CARCINOMA ID BROAD LIGAMENT; BRENNER TUMOR AB We report the clinical and morphologic features of a transitional cell carcinoma (TCC) that arose within a paratubal cyst of the right broad ligament. This case represents only the second report of a TCC arising in the broad ligament and the first with documented origin within a paratubal cyst. A possible explanation for this tumor's histogenesis as it relates to the more common transitional cell neoplasms of the ovary is presented. C1 WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. MARICOPA CTY GEN HOSP,DEPT SURG PATHOL,PHOENIX,AZ. NR 9 TC 10 Z9 10 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0277-1691 J9 INT J GYNECOL PATHOL JI Int. J. Gynecol. Pathol. PD JUL PY 1995 VL 14 IS 3 BP 270 EP 273 DI 10.1097/00004347-199507000-00013 PG 4 WC Obstetrics & Gynecology; Pathology SC Obstetrics & Gynecology; Pathology GA RE006 UT WOS:A1995RE00600013 PM 8600081 ER PT J AU MORABITO, MA KRAUS, ME AF MORABITO, MA KRAUS, ME TI A NOTE ON SCHEDULING MIXED-MODEL MULTILEVEL JUST-IN-TIME PRODUCTION SYSTEMS SO INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH LA English DT Discussion AB Miltenburg and Sinnamon give a method for efficiently finding good production schedules in mixed-model multi-level just-in-time production systems. They first formulate the problem as a quadratic programming problem. Their formulation leaves out a constraint that is necessary for feasibility. They then present two heuristics to find good production schedules without solving the quadratic programming problem. Their heuristics do not include feasibility checks for production decisions. As a result, they can produce infeasible production schedules. We present a modification of their formulation and their heuristics which does guarantee a feasible solution. RP MORABITO, MA (reprint author), USAF,FAC GRAD LOGIST MANAGEMENT,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 7 Z9 7 U1 1 U2 1 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7543 J9 INT J PROD RES JI Int. J. Prod. Res. PD JUL PY 1995 VL 33 IS 7 BP 2061 EP 2063 DI 10.1080/00207549508904800 PG 3 WC Engineering, Industrial; Engineering, Manufacturing; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA RH713 UT WOS:A1995RH71300019 ER PT J AU CAMPBELL, FC MALLOW, AR BROWNING, CE AF CAMPBELL, FC MALLOW, AR BROWNING, CE TI POROSITY IN CARBON-FIBER COMPOSITES - AN OVERVIEW OF CAUSES SO JOURNAL OF ADVANCED MATERIALS LA English DT Article AB This paper summarizes the variables that are known to contribute to voids and porosity in composite parts. A simple theory for void formation in addition curing thermoset composite materials is presented that ties void formation to volatile vapor pressure. If the volatile vapor pressure in the curing laminate exceeds the actual pressure on the liquid resin (i.e., the hydrostatic resin pressure) prior to gellation, then void formation and growth will occur. Experimental results are presented that show the effects of several variables on the measured hydrostatic resin pressure. This is followed by a discussion of the variables that are known to influence void formation and growth, specifically, chemical composition of the resin system, resin mixing and prepregging operations, layup variables, pressure operations, tooling variables, and, finally, cure cycle variables. C1 USAF,MAT DIRECTORATE,WRIGHT LAB,DAYTON,OH. RP CAMPBELL, FC (reprint author), MCDONNELL DOUGLAS AEROSP,ST LOUIS,MO, USA. NR 10 TC 26 Z9 28 U1 2 U2 21 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 1070-9789 J9 J ADV MATER JI J. Adv. Mater. PD JUL PY 1995 VL 26 IS 4 BP 18 EP 33 PG 16 WC Materials Science, Multidisciplinary SC Materials Science GA RK708 UT WOS:A1995RK70800004 ER PT J AU BRANDT, SA GILLIAM, FT AF BRANDT, SA GILLIAM, FT TI DESIGN ANALYSIS METHODOLOGY FOR SOLAR-POWERED AIRCRAFT SO JOURNAL OF AIRCRAFT LA English DT Article AB A methodology for conceptual design of solar-powered aircraft is described. The method is based on traditional design methodologies adapted to address the peculiar characteristics of solar-powered aircraft. The solar propulsion notation is applied to the analysis to create constraint diagrams that have takeoff wing loading Omega = W-to/S as their independent variable, and the ratio of solar collector area to reference planform area R = S-cell/S as their dependent variable. Constraints determined by the propulsion requirements for the design mission of the aircraft define a solution space on the constraint diagram. A design point is selected from within the solution space. Parametric estimates for component weights are then represented as wing loading portions. When these component wing loading portions are summed along with an expression for the required payload wing loading portion, they are equated to the design point wing loading. The resulting equation is solved for the required reference planform area, thus sizing the conceptual design, Three typical conceptual designs are described and analyzed, demonstrating the utility of the methodology. RP BRANDT, SA (reprint author), USAF ACAD,DEPT AERONAUT,2354 FAIRCHILD DR,SUITE 6H24,COLORADO SPRINGS,CO 80920, USA. NR 0 TC 18 Z9 24 U1 0 U2 4 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JUL-AUG PY 1995 VL 32 IS 4 BP 703 EP 709 DI 10.2514/3.46780 PG 7 WC Engineering, Aerospace SC Engineering GA RP012 UT WOS:A1995RP01200003 ER PT J AU JONES, BL AF JONES, BL TI NEAR REAL-TIME APPROACH TO STATISTICAL FLIGHT TEST SO JOURNAL OF AIRCRAFT LA English DT Article AB A near real-time approach to statistical flight test is proposed that minimizes the number of test condition executions required to adequately describe system performance relative to a specified performance goal or specification, Four different statistical intervals, all based on the Student-t distribution and its generalization, are summarized and applied to aircraft night test scenarios. A graphical technique is developed with applicability to near real-time mission operations. Finally, probability statements are associated with sample set statistics and applied to performance goals or specification compliance. RP JONES, BL (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JUL-AUG PY 1995 VL 32 IS 4 BP 782 EP 786 DI 10.2514/3.46791 PG 5 WC Engineering, Aerospace SC Engineering GA RP012 UT WOS:A1995RP01200014 ER PT J AU KLEESPIES, TJ AF KLEESPIES, TJ TI THE RETRIEVAL OF MARINE STRATIFORM CLOUD PROPERTIES FROM MULTIPLE OBSERVATIONS IN THE 3.9-MU-M WINDOW UNDER CONDITIONS OF VARYING SOLAR ILLUMINATION SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID EFFECTIVE PARTICLE RADIUS; RADIATION MEASUREMENTS; STRATOCUMULUS CLOUDS; OPTICAL-THICKNESS; WATER CLOUDS; SCATTERING; PARAMETERIZATION; DROPLETS; MODELS; FIRE AB Radiometric observations in the 3.9-mu m region have been used by a number if investigators for the determination of cloud parameters or sea surface temperature at night. Only a few attempts have been made to perform quantitative assessments of cloud and surface properties during the daytime because of the inability to distinguish between the thermal and solar components of the satellite-sensed radiances. This paper presents a new method of separating the thermal and solar components of upwelling 3.9-mu m radiances. Two collocated satellite observations are made under conditions where the solar illumination angle changes but the thermal structure of the cloud and atmosphere, as well as the cloud microphysics change very little. These conditions can easily be met by observing the same cloud from geosynchronous orbit over a short time interval during the morning hours. When the radiances are differenced under these constraints, the thermal components cancel, and the difference in the radiances is simply the difference in the solar component. With a few simplifying assumptions, a cloud microphysical property, specifically effective radius, can be inferred. This parameter is of particular importance to both climate modeling and global change studies. The methodology developed in this paper is applied to data from the Visible-Infrared Spin Scan Radiometer Atmospheric Sounder onboard the GOES-7 spacecraft for a period in August 1992. C1 USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,DIV ATMOSPHER SCI,BEDFORD,MA. RI Kleespies, Thomas/F-5598-2010 NR 41 TC 19 Z9 19 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD JUL PY 1995 VL 34 IS 7 BP 1512 EP 1524 DI 10.1175/1520-0450-34.7.1512 PG 13 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RE824 UT WOS:A1995RE82400002 ER PT J AU SOMERVILLE, CC NISHINO, SF SPAIN, JC AF SOMERVILLE, CC NISHINO, SF SPAIN, JC TI PURIFICATION AND CHARACTERIZATION OF NITROBENZENE NITROREDUCTASE FROM PSEUDOMONAS PSEUDOALCALIGENES JS45 SO JOURNAL OF BACTERIOLOGY LA English DT Article ID ESCHERICHIA-COLI; NITROAROMATIC COMPOUNDS; MICROBIAL TRANSFORMATION; NITROFURAN REDUCTASES; 1-NITROPYRENE; REDUCTION; BACTERIA; NAD(P)H AB Pseudomonas pseudoalcaligenes JS45 grows on nitrobenzene as a sole source of carbon, nitrogen, and energy. The catabolic pathway involves reduction to hydroxylaminobenzene followed by rearrangement to o-amino-phenol and ring fission (S. F. Nishino and J. C. Spain, Appl. Environ. Microbiol. 59:2520, 1993). A nitrobenzene-inducible, oxygen-insensitive nitroreductase,vas purified from extracts of JS45 by ammonium sulfate precipitation followed by anion-exchange and gel filtration chromatography. A single 33-kDa polypeptide was detected by denaturing gel electrophoresis. The size of the native protein was estimated to be 30 kDa by gel filtration. The enzyme is a flavoprotein with a tightly bound flavin mononucleotide cofactor in a ratio of 2 mol of flavin per mol of protein. The K-m for nitrobenzene is 5 mu M at an initial NADPH concentration of 0.5 mM. The K-m for NADPH at an initial nitrobenzene concentration of 0.1 mM is 183 mu M. Nitrosobenzene was not detected as an intermediate of nitrobenzene reduction, but nitrosobenzene is a substrate for the enzyme, and the specific activity for nitrosobenzene is higher than that for nitrobenzene. These results suggest that nitrosobenzene is formed but is immediately reduced to hydroxylaminobenzene. Hydroxylaminobenzene was the only product detected after incubation of the purified enzyme with nitrobenzene and NADPH. Hydroxylaminobenzene does not serve as a substrate for further reduction by this enzyme. The products and intermediates are consistent with two two-electron reductions of the parent compound. Furthermore, the low K-m and the inducible control of enzyme synthesis suggest that nitrobenzene is the physiological substrate for this enzyme. C1 ARMSTRONG LAB,TYNDALL AFB,FL 32403. NR 41 TC 84 Z9 93 U1 0 U2 7 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0021-9193 J9 J BACTERIOL JI J. Bacteriol. PD JUL PY 1995 VL 177 IS 13 BP 3837 EP 3842 PG 6 WC Microbiology SC Microbiology GA RF553 UT WOS:A1995RF55300029 PM 7601851 ER PT J AU YU, H BRUNO, JG CHENG, TC CALOMIRIS, JJ GOODE, MT AF YU, H BRUNO, JG CHENG, TC CALOMIRIS, JJ GOODE, MT TI A COMPARATIVE-STUDY OF PCR PRODUCT DETECTION AND QUANTITATION BY ELECTROCHEMILUMINESCENCE AND FLUORESCENCE SO JOURNAL OF BIOLUMINESCENCE AND CHEMILUMINESCENCE LA English DT Article DE ELECTROCHEMILUMINESCENCE; MAGNETIC SEPARATION; DNA PROBES; PCR; QUANTITATION ID ASSAYS; DNA AB Amplification and detection of target DNA sequences are made possible in a polymerase chain reaction (PCR) by using a mixture of biotinylated and ruthenium(II) trisbipyridal (Ru(bpy)(3)(2+))-end-labelled primers. In this way, biotin for capture and RU(bpy)(3)(2+) for detection are directly incorporated into the PCR product obviating subsequent probe hybridization. PCR of a bacterial DNA template from Alteromonas species strain JD6.5 using a cocktail of biotin- and Ru(bpy)(3)(2+)-labelled primers amplified a 1 kilobase region. Serial dilution of PCR product followed by magnetic separation with Streptavidin (SA)-coated magnetic beads and an electrochemiluminescence (ECL) assay using the semi-automated QPCR System 5000 demonstrated sensitive (pg range) DNA detection. ECL assay of probe hybridization to a human immunodeficiency virus (HIV) sequence also produced pg level sensitivity. Quantitative DNA determination by ECL assay correlated well with visual detection of DNA in electrophoretic gels. However, DNA detection by ECL assay was 10 to 100 times more sensitive than conventional ethidium bromide staining. The combination of DNA-based magnetic separation with ECL assay provides a very sensitive and rapid method of quantitating DNA which, owing to its rapid and facile nature, may have many applications in the research, environmental monitoring, industrial and clinical fields. C1 USA,EDGEWOOD RES DEV & ENGN CTR,SCBRD RTE,USAF,ARMSTRONG LAB,CBDCOM,CREW SYST DIRECTORATE AL CFD,ABERDEEN PROVING GROUND,MD 21010. OPTECH CORP,SAN ANTONIO,TX 78229. SCI & TECHNOL CORP,EDGEWOOD,MD 21040. NR 11 TC 36 Z9 42 U1 1 U2 6 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0884-3996 J9 J BIOLUM CHEMILUM JI J. Biolumin. Chemilumin. PD JUL-AUG PY 1995 VL 10 IS 4 BP 239 EP 245 DI 10.1002/bio.1170100407 PG 7 WC Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA RR741 UT WOS:A1995RR74100006 PM 8533605 ER PT J AU CARMAN, GP SENDECKYJ, GP AF CARMAN, GP SENDECKYJ, GP TI REVIEW OF THE MECHANICS OF EMBEDDED OPTICAL SENSORS SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE COMPOSITE MATERIALS; EMBEDDED OPTICAL FIBERS; STRENGTH DEGRADATION ID FATIGUE DAMAGE DETECTION; COMPOSITE-MATERIALS; FIBER SENSORS; PERFORMANCE AB The published literature on the effect of optical sensors and fibers embedded in host composite materials is reviewed. The literature indicates that improperly embedded optical fibers produce local distortions and resin-rich regions in the host composite that cause structural performance degradation. This is especially true for compressive loading of relatively thin composite laminates. Tensile strength is at most only slightly degraded. The available data are inconclusive for fatigue loading. C1 STRUCT INTEGR BRANCH, DIV STRUCT, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. RP UNIV CALIF LOS ANGELES, DEPT MANE, LOS ANGELES, CA 90024 USA. NR 75 TC 38 Z9 39 U1 0 U2 8 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA SN 0884-6804 J9 J COMPOS TECH RES JI J. Compos. Technol. Res. PD JUL PY 1995 VL 17 IS 3 BP 183 EP 193 PG 11 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA RJ652 UT WOS:A1995RJ65200001 ER PT J AU BARTLETT, CS AF BARTLETT, CS TI TURBINE-ENGINE ICING SPRAY BAR DESIGN ISSUES SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 39th International Gas Turbine and Aeroengine Congress and Exposition CY JUN 13-16, 1994 CL THE HAGUE, NETHERLANDS AB Techniques have been developed at the Engine Test Facility (ETF) of the Arnold Engineering Development Center (AEDC) to simulate flight through atmospheric icing conditions of supercooled liquid water droplets. Ice formed on aircraft and propulsion system surfaces during flight through icing conditions can, even in small amounts, be extremely hazardous. The effects of ice are dependent on many variables and are still unpredictable. Often, experiments are conducted to determine the characteristics of the aircraft and its propulsion system in an icing environment. Facilities at the ETF provide the capability to conduct icing testing in either the direct-connect (connected pipe) or the free-jet mode. The requirements of a spray system for turbine engine icing testing are described, as are the techniques used at the AEDC ETF to simulate flight in icing conditions. Some of the key issues facing the designer of a spray system for use in an altitude facility are identified and discussed, and validation testing of the design of a new spray system for the AEDC ETF is detailed. This spray system enables resting of the newest generation of high-thrust turbofan engines in simulated icing conditions. RP BARTLETT, CS (reprint author), SVERDRUP TECHNOL INC,ARNOLD ENGN DEV CTR,AEDC GRP,DEPT PROP TESTING TECHNOL,ARNOLD AFB,TN 37389, USA. NR 10 TC 0 Z9 0 U1 1 U2 4 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD JUL PY 1995 VL 117 IS 3 BP 406 EP 412 DI 10.1115/1.2814110 PG 7 WC Engineering, Mechanical SC Engineering GA RR457 UT WOS:A1995RR45700004 ER PT J AU HEDMAN, PO STURGESS, GJ WARREN, DL GOSS, LP SHOUSE, DT AF HEDMAN, PO STURGESS, GJ WARREN, DL GOSS, LP SHOUSE, DT TI OBSERVATIONS OF FLAME BEHAVIOR FROM A PRACTICAL FUEL INJECTOR USING GASEOUS FUEL IN A TECHNOLOGY COMBUSTOR SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 39th International Gas Turbine and Aeroengine Congress and Exposition CY JUN 13-16, 1994 CL THE HAGUE, NETHERLANDS AB This paper presents results from an Air Force program being conducted by researchers at Brigham Young University (BYU) Wright-Patterson Air Force Base (WPAFB), and Pratt and Whitney (P&W). This study is part of a comprehensive effort being supported by the Aero Propulsion and Power Laboratory at Wright-Patterson Air Force Base, and Pratt and Whitney in which simple and complex diffusion flames are being studied to understand better the fundamentals of gas turbine combustion near lean blowout. The program's long-term goal is to improve the design methodology of gas turbine combustors. This paper focuses on four areas of investigation: (1) digitized images from still film photographs to document the observed flame structures as fuel equivalence ratio was varied, (2) sets of LDA data to quantify the velocity flow fields existing in the burner (3) CARS measurements of gas temperature to determine the temperature field in the combustion zone, and to evaluate the magnitude of peak temperature, and (4) two-dimensional images of OH radical concentrations using PLIF to document the instantaneous location of the flame reaction zones. C1 PRATT & WHITNEY,E HARTFORD,CT 06108. SYST RES LABS INC,DIV ARVIN CALSPAN,DAYTON,OH 45440. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP HEDMAN, PO (reprint author), BRIGHAM YOUNG UNIV,ENGN RES CTR,DEPT CHEM ENGN,PROVO,UT 84602, USA. NR 9 TC 4 Z9 5 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD JUL PY 1995 VL 117 IS 3 BP 441 EP 452 DI 10.1115/1.2814116 PG 12 WC Engineering, Mechanical SC Engineering GA RR457 UT WOS:A1995RR45700009 ER PT J AU WARD, WE SICREE, S CHEN, B TAMBORSKI, C AF WARD, WE SICREE, S CHEN, B TAMBORSKI, C TI SYNTHESIS OF POLYFLUOROARYLALKYL SULFIDE COMPOUNDS SO JOURNAL OF FLUORINE CHEMISTRY LA English DT Article DE SYNTHESIS; POLYFLUOROARYLALKYL SULFIDES; NMR SPECTROSCOPY; MASS SPECTROMETRY AB Syntheses of RC(6)F(4)SR' compounds (where R = F, C6F5, H, R' = alkyl, trifluorovinyl) have been accomplished through reaction between Ar(f)SM (where M = Cu, MgX) and an alkyl or trifluorovinyl halide in dimethylacetamide solvent. Minor by-products from competing reactions have been partially characterized by CC-MS analysis. C1 USAF,WRIGHT LAB,NONSTRUCT MAT BRANCH,WRIGHT PATTERSON AFB,OH 45433. FLUID INC,DAYTON,OH 45433. NR 15 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-1139 J9 J FLUORINE CHEM JI J. Fluor. Chem. PD JUL PY 1995 VL 73 IS 1 BP 73 EP 77 DI 10.1016/0022-1139(94)03200-J PG 5 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA RL107 UT WOS:A1995RL10700015 ER PT J AU DOLAN, MJ CLERICI, M BLATT, SP HENDRIX, CW MELCHER, GP BOSWELL, RN FREEMAN, TM WARD, W HENSLEY, R SHEARER, GM AF DOLAN, MJ CLERICI, M BLATT, SP HENDRIX, CW MELCHER, GP BOSWELL, RN FREEMAN, TM WARD, W HENSLEY, R SHEARER, GM TI IN-VITRO T-CELL FUNCTION, DELAYED-TYPE HYPERSENSITIVITY SKIN TESTING, AND CD4(+) T-CELL SUBSET PHENOTYPING INDEPENDENTLY PREDICT SURVIVAL-TIME IN PATIENTS INFECTED WITH HUMAN-IMMUNODEFICIENCY-VIRUS SO JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID AIDS-RELATED COMPLEX; MEDIATED IMMUNE-RESPONSE; PLACEBO-CONTROLLED TRIAL; STATES-AIR-FORCE; HIV-INFECTION; HOMOSEXUAL MEN; IMMUNOLOGICAL ABNORMALITIES; STAGING CLASSIFICATION; ZIDOVUDINE TREATMENT; DISEASE PROGRESSION AB Human immunodeficiency virus type 1 (HIV-1)-infected patients (n = 335) in the US Air Force HIV Natural History Program were followed for 3 years (mean) after skin testing, immunophenotyping of CD4(+) cell subsets, and measurement of in vitro interleukin-2 production after stimulation by phytohemagglutinin, alloantigens, tetanus toroid, and influenza A virus. The T cell functional assay predicted survival time (P < .001) and time for progression to AIDS (P = .014). Skin testing for tetanus, mumps, and Candida antigen and the total number of positive tests (P < .001 for each) stratified patients for survival time. In a multivariable proportional hazards model, the T cell functional assay (P = .008), the absolute number of CD4(+) T cells (P = .001), the percentage of CD4(+)CD29(+) cells (P = .06), and the number of reactive skin tests (P < .001) predicted survival time. Thus, cellular immune functional tests have significant predictive value for survival time in HIV-l-infected patients independent of CD4(+) cell count. C1 WILFORD HALL USAF MED CTR,DEPT MED,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT ALLERGY IMMUNOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,CTR AIDS RES,LACKLAND AFB,TX 78236. NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892. RP DOLAN, MJ (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS PSMI,2200 BERGQUIST DR STE 1,LACKLAND AFB,TX 78236, USA. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 FU NIAID NIH HHS [AI-28696] NR 89 TC 121 Z9 122 U1 0 U2 3 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD JUL PY 1995 VL 172 IS 1 BP 79 EP 87 PG 9 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA RF041 UT WOS:A1995RF04100011 PM 7797948 ER PT J AU AGNES, GS AF AGNES, GS TI DEVELOPMENT OF A MODAL MODEL FOR SIMULTANEOUS ACTIVE AND PASSIVE PIEZOELECTRIC VIBRATION SUPPRESSION SO JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES LA English DT Article AB The use of piezoelectric materials simultaneously as passive single-mode devices and active broadband actuators to suppress structural vibrations is discussed. A simple modal model that predicts this behavior is developed. Experimental studies conducted to verify the model show a reduction of 20 dB in the response of the second mode of the structure is possible via passive shunting while simultaneously commanding the piezoactuator. The results indicate that for vibration problems involving a few modes, piezoelectric devices combining active and passive techniques can significantly reduce the broadband structural response to disturbances. RP AGNES, GS (reprint author), USAF,WRIGHT LAB,WL FIBGC BLDG 24C,2145 5TH ST,STE 2,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 41 Z9 44 U1 0 U2 2 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 1045-389X J9 J INTEL MAT SYST STR JI J. Intell. Mater. Syst. Struct. PD JUL PY 1995 VL 6 IS 4 BP 482 EP 487 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA RN490 UT WOS:A1995RN49000005 ER PT J AU EZEKIEL, S SMITH, SP SHAHRIAR, MS HEMMER, PR AF EZEKIEL, S SMITH, SP SHAHRIAR, MS HEMMER, PR TI NEW OPPORTUNITIES IN FIBEROPTIC SENSORS SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID RAMAN TRANSITION; LASER; BEAM AB Several possibilities for new fiber-optic sensors are proposed that are based on two-photon spectroscopic techniques, Examples are chemical sensors, including multiplexed sensors, as well as magnetic/electric sensors, The development of a compact, low-cost fiber-optic method for the accurate measurement of time/frequency is also proposed. C1 USAF,ROME LAB,BEDFORD,MA 01731. RP EZEKIEL, S (reprint author), MIT,ELECTR RES LAB,CAMBRIDGE,MA 02139, USA. RI Shahriar, Selim/B-7270-2009 NR 15 TC 6 Z9 7 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD JUL PY 1995 VL 13 IS 7 BP 1189 EP 1192 DI 10.1109/50.400698 PG 4 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA RK698 UT WOS:A1995RK69800002 ER PT J AU MCCAFFERTY, RR HARRISON, MJ TAMAS, LB LARKINS, MV AF MCCAFFERTY, RR HARRISON, MJ TAMAS, LB LARKINS, MV TI OSSIFICATION OF THE ANTERIOR LONGITUDINAL LIGAMENT AND FORESTIER-DISEASE - AN ANALYSIS OF 7 CASES SO JOURNAL OF NEUROSURGERY LA English DT Article DE FORESTIERS DISEASE; DIFFUSE IDIOPATHIC SKELETAL HYPEROSTOSIS; DYSPHAGIA OSSIFICATION ID IDIOPATHIC SKELETAL HYPEROSTOSIS; OSTEOPHYTES CAUSING DYSPHAGIA; SPINAL-CORD COMPRESSION; CERVICAL OSTEOPHYTES; HYPER-OSTOSIS; DISH; MYELOPATHY AB A retrospective review was conducted on the records and radiographs of six symptomatic patients and one asymptomatic patient with Forestier's disease. No other series of patients with this disease is found in the neurosurgical literature. Forestier's disease, also known as diffuse idiopathic skeletal hyperostosis (DISH), is an idiopathic rheumatological abnormality in which exuberant ossification occurs along ligaments throughout the body, but most notably the anterior longitudinal ligament of the spine. It affects older men predominantly; all of our patients were men older than 60 years of age. The disease is usually asymptomatic; however, dyspnea, dysphagia, spinal cord compression, and peripheral nerve entrapment have all been documented in association with the disorder. Five of the six symptomatic patients presented with dysphagia due to esophageal compression by calcified anterior longitudinal ligaments, acid one patient developed recurrent spinal stenosis when scar tissue from a previous decompressive laminectomy became calcified. Ah patients responded well to surgery. Two of the four patients who underwent removal of cervical osteophytes required several months following surgery for the dysphagia to resolve. This would support the hypothesis that not all cases of dysphagia in Forestier's disease are due to mechanical compression. Dysphagia may result from inflammatory changes that accompany fibrosis in the wall of the esophagus or from esophageal denervation. Evaluation of dysphagia even in the presence of Forestier's disease must rule out occult malignancy. The authors' experience suggests that dysphagia in the setting of Forestier's disease is an underrecognized entity amenable to surgical intervention. C1 UNIV CALIF DAVIS,DEPT SURG,DIV NEUROSURG,DAVIS,CA 95616. RP MCCAFFERTY, RR (reprint author), USAF,DAVID GRANT MED CTR,DIV NEUROSURG,60TH MED GRP,101 BODIN CIRCLE,TRAVIS AFB,CA 95535, USA. NR 41 TC 51 Z9 51 U1 0 U2 2 PU AMER ASSOC NEUROLOGICAL SURGEONS PI CHARLOTTESVILLE PA UNIV VIRGINIA, 1224 WEST MAIN ST, STE 450, CHARLOTTESVILLE, VA 22903 SN 0022-3085 J9 J NEUROSURG JI J. Neurosurg. PD JUL PY 1995 VL 83 IS 1 BP 13 EP 17 DI 10.3171/jns.1995.83.1.0013 PG 5 WC Clinical Neurology; Surgery SC Neurosciences & Neurology; Surgery GA RE609 UT WOS:A1995RE60900003 PM 7782829 ER PT J AU HORWITZ, JR LALLY, KP CHEU, HW VAZQUEZ, WD GROSFELD, JL ZIEGER, MM AF HORWITZ, JR LALLY, KP CHEU, HW VAZQUEZ, WD GROSFELD, JL ZIEGER, MM TI COMPLICATIONS AFTER SURGICAL INTERVENTION FOR NECROTIZING ENTEROCOLITIS - A MULTICENTER REVIEW SO JOURNAL OF PEDIATRIC SURGERY LA English DT Article; Proceedings Paper CT 1994 Annual Meeting of the Section-on-Surgery of the American-Academy-of-Pediatrics CY OCT 21-23, 1994 CL DALLAS, TX SP Aner Acad Pediat, Sect Surg DE NECROTIZING ENTEROCOLITIS; OPERATIVE COMPLICATIONS ID SUCCESSFUL MEDICAL-MANAGEMENT; LOW-BIRTH-WEIGHT; GASTROINTESTINAL-TRACT; PRIMARY ANASTOMOSIS; PREMATURE-INFANTS; EXPERIENCE; NEONATE; PERFORATION; PERITONITIS; MORTALITY AB Necrotizing enterocolitis (NEC) is a serious condition affecting predominantly the premature infant. The purpose of this study is to report a multicenter experience of complications in 252 infants requiring surgical therapy for NEC. Data from eight institutions for the years 1980 through 1990 were collected and analyzed for infants undergoing surgical therapy for NEC. Records were reviewed for gestational age, birth weight, age at operation, indications for operation, degree of intestinal involvement, operation(s) performed, complications, and 30 day mortality rates. A total of 264 infants underwent surgical intervention for NEC during the study period. Complete information was available for 252 patients. The mean gestational age was 31 +/- 5 weeks and the mean birth weight was 1,552 +/- 823 g. The mean age at operation was 18 +/- 35 days. Pneumoperitoneum was the most common indication for operation (42%). The 10-day survival rate was 72%. Eighty one percent of patients underwent primary laparotomy, whereas peritoneal drainage was performed in 48 (19%) patients. Postoperative complications were identified in 119 (47%) patients. The most common postoperative complications were sepsis (9%), intestinal strictures (9%), and short gut (9%). Wound infections occurred in 6%, and the incidence of intraabdominal abscess formation was only 2.3%. Gestational age <27 weeks (P <.005) and birth weight <1,000 g (P <.005) were associated with significantly increased mortality but no increase in postoperative morbidity. The incidence of complications was similar in the very low birth weight (<1,000 g) infants (51%) compared with infants greater than or equal to 1,000 g (46%). Complications occurred in 30 (63%) patients treated with initial peritoneal drainage and in 89 (44%) patients who had initial laparotomy. These data suggest that, even with successful out comes, a significant number of complications occur in patients after operative intervention for NEC. Despite a high perforation rate, there was a low incidence of postoperative intraabdominal and wound infections. Copyright (C) 1995 by W.S. Saunders Company C1 UNIV TEXAS,SCH MED,DEPT SURG,DIV PEDIAT SURG,HOUSTON,TX 77030. HERMANN CHILDRENS HOSP,DEPT SURG,HOUSTON,TX. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. JW RILEY HOSP CHILDREN,INDIANAPOLIS,IN. CHILDRENS HOSP,MED CTR,CINCINNATI,OH 45229. CHILDRENS HOSP PITTSBURGH,PITTSBURGH,PA 15213. MAGEE WOMENS HOSP,PITTSBURGH,PA 15213. MERCY HOSP,PITTSBURGH,PA 15219. WESTERN PENN HOSP,PITTSBURGH,PA 15224. NR 37 TC 66 Z9 74 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0022-3468 J9 J PEDIATR SURG JI J. Pediatr. Surg. PD JUL PY 1995 VL 30 IS 7 BP 994 EP 999 DI 10.1016/0022-3468(95)90328-3 PG 6 WC Pediatrics; Surgery SC Pediatrics; Surgery GA RL118 UT WOS:A1995RL11800018 PM 7472960 ER PT J AU RASCH, MS MEALEY, BL PRIHODA, TJ WOODARD, DS MCMANUS, LM AF RASCH, MS MEALEY, BL PRIHODA, TJ WOODARD, DS MCMANUS, LM TI THE EFFECT OF INITIAL PERIODONTAL THERAPY ON SALIVARY PLATELET-ACTIVATING-FACTOR LEVELS IN CHRONIC ADULT PERIODONTITIS SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE INFLAMMATION DIAGNOSIS; NEUTROPHILS; PERIODONTITIS DIAGNOSIS; PLATELET ACTIVATING FACTOR; SALIVA ANALYSIS ID HUMAN POLYMORPHONUCLEAR LEUKOCYTES; GINGIVAL CREVICULAR FLUID; HUMAN-NEUTROPHILS; FACTOR PAF; IMMUNOREGULATORY FUNCTIONS; MOLECULAR HETEROGENEITY; ATTACHMENT LOSS; HOST RESPONSE; ORAL HYGIENE; DISEASE AB PLATELET-ACTIVATING FACTOR (PAF), a potent phospholipid inflammatory mediator, is increased in the mixed saliva of subjects with periodontal disease and correlates with the extent of oral inflammation. The present study was designed to provide a longitudinal evaluation of the effect of initial periodontal therapy (home care instruction, prophylaxis, and scaling/root planing) on salivary PAF levels in chronic adult periodontitis patients (n = 15). Mixed saliva was collected prior to, during, and after initial therapy and was utilized to assess PAF levels after lipid extraction and fractionation as well as to histologically assess the number of polymorphonuclear leukocytes (PMN). PAF activity was determined in bioassay relative to authentic PAF (1-O-hexadecyl-2-acetyl-sn-glycero-3-phosphocholine 16:0-alkyl-PAF). Initial salivary PAF levels (12.1 +/- 2.8 pmole equivalents of 16:0-alkyl-PAF/ml saliva; mean +/- SE) decreased following supragingival plaque control (9.6 +/- 2.4) and were further reduced following scaling and root planing (5.7 +/- 1.4). In parallel, salivary PMN levels were significantly reduced and clinical estimates of periodontal disease were significantly improved; i.e., there was a decrease in the percentage of sites with both bleeding on probing (from 46.1 +/- 4.6% of sites at pretreatment to 25.9 +/- 2.6% after scaling and root planing) and probing depths greater than or equal to 4 mm (from 16.7 +/- 1.9% of sites to 10.3 +/- 1.2%). Thus, initial periodontal therapy reduced salivary PAF levels in concert with improvements in clinical estimates of marginal and submarginal periodontal inflammation suggesting that PAF may participate in inflammatory events during periodontal tissue injury and disease. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PERIODONT,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. RP RASCH, MS (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. FU NIDCR NIH HHS [DE-08000] NR 75 TC 18 Z9 19 U1 0 U2 0 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD JUL PY 1995 VL 66 IS 7 BP 613 EP 623 PG 11 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RL625 UT WOS:A1995RL62500010 PM 7562354 ER PT J AU HAMERNIK, TA GARCIA, E STECH, D AF HAMERNIK, TA GARCIA, E STECH, D TI OPTIMAL PLACEMENT OF DAMPED STRUTS USING SIMULATED ANNEALING SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID OPTIMIZATION AB Presented is the optimization of the placement of damped structural elements in a two-dimensional truss network. This work presents a modification of a heuristic optimization technique called simulated annealing, to improve the speed of convergence. Rather than setting the annealing temperature schedule a priori, it is modified according to the change in cost functional. For a single mode of vibration, a comparison is made between the simulated-annealing results and the true optimal locations, as determined by the modal strain locations. As expected, simulated annealing returns a near-optimal solution from a variety of initial configurations. Modal weighting factors are utilized to examine multiple modes, and again the modal strain locations are used for comparison. C1 VANDERBILT UNIV,DEPT MECH ENGN,SMART STRUCT LAB,NASHVILLE,TN 37235. USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP HAMERNIK, TA (reprint author), SUNY BUFFALO,DEPT MECH & AEROSP ENGN,BUFFALO,NY 14260, USA. NR 9 TC 2 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JUL-AUG PY 1995 VL 32 IS 4 BP 653 EP 661 DI 10.2514/3.26666 PG 9 WC Engineering, Aerospace SC Engineering GA RP016 UT WOS:A1995RP01600012 ER PT J AU RAITT, WJ ERNSTMEYER, J MYERS, NB WHITE, AB SASAKI, S OYAMA, KI KAWASHIMA, N FRASERSMITH, AC GILCHRIST, BE HALLINAN, TJ AF RAITT, WJ ERNSTMEYER, J MYERS, NB WHITE, AB SASAKI, S OYAMA, KI KAWASHIMA, N FRASERSMITH, AC GILCHRIST, BE HALLINAN, TJ TI VLF WAVE EXPERIMENTS IN-SPACE USING A MODULATED ELECTRON-BEAM SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID VEHICLE AB A sounding-rocket payload to study the generation and emission of electromagnetic waves from a modulated electron beam was developed and successfully flown from the Poker Flat Research Range, Alaska, in March 1992 on a Black Brant 11 sounding rocket, We describe the mission objectives, the instrumentation, flight operations, and preliminary results from the flight, The payload contained a modulated electron gun with a triode arrangement of electrodes allowing modulation of the beam current up to vlf frequencies, Vehicle charging was inhibited by a gas-release system, synchronized with the beam emissions, A network of ground stations was set up to try to receive signals from the modulated beam, and tow-light systems were set up to look for evidence of the beam below the payload trajectory, No evidence of beam-induced wave radiation to the ground was detected, However, strong vlf frequencies following the preset program were clearly detected by the diagnostic free flyer and the tethered daughter payload segment, The effect of the gas releases was very marked, The vehicle potential dropped from over 1 kV to about 30 V when the gas was turned on, Some evidence of the light from beam-atmosphere interactions was seen near the end of the Eight, but in general, the optical results were not very informative, The launch was successful, mission operations were as planned, and good quality onboard data were collected throughout the operational part of the flight. C1 USAF,ROME LAB,ERCP,BEDFORD,MA 01731. INST SPACE & ASTRONAUT SCI,RES DIV SPACE APPL,KANAGAWA 229,JAPAN. INST SPACE & ASTRONAUT SCI,RES DIV PLANETARY SCI,KANAGAWA 229,JAPAN. STANFORD UNIV,DEPT ELECT ENGN,STANFORD,CA 94305. STANFORD UNIV,DEPT GEOPHYS,STANFORD,CA 94305. UNIV MICHIGAN,SPACE PHYS RES LAB,ANN ARBOR,MI 48109. UNIV ALASKA,FAIRBANKS COLL,GEOPHYS RES INST,FAIRBANKS,AK 99701. RP RAITT, WJ (reprint author), UTAH STATE UNIV,CTR ATMOSPHER & SPACE SCI,LOGAN,UT 84322, USA. NR 15 TC 3 Z9 3 U1 0 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JUL-AUG PY 1995 VL 32 IS 4 BP 670 EP 679 DI 10.2514/3.55687 PG 10 WC Engineering, Aerospace SC Engineering GA RP016 UT WOS:A1995RP01600014 ER PT J AU WILKENING, DE LOYALL, JP PITARYS, MJ LITTLEJOHN, K AF WILKENING, DE LOYALL, JP PITARYS, MJ LITTLEJOHN, K TI A REUSE APPROACH TO SOFTWARE REENGINEERING SO JOURNAL OF SYSTEMS AND SOFTWARE LA English DT Article ID PROGRAM AB The United States Air Force's Wright Laboratory and TASC are developing an environment for the reengineering of software from one language to another. Our approach engineers a program in the new language by reusing portions of the original implementation and design. We use reverse engineering to facilitate understanding, design recovery, viewing, and navigating of the subject system. We use computer-assisted restructuring to help the engineer develop a program by use of design and implementation information recovered from the subject system. We use automatic translation of low-level program statements to free the engineer from the tedium associated with syntactic differences between languages. This article describes our reengineering process model, the design of our reengineering environment, and the current state of the implementation. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. RP WILKENING, DE (reprint author), TASC,55 WALKERS BROOK DR,READING,MA 01867, USA. NR 24 TC 5 Z9 5 U1 0 U2 2 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0164-1212 J9 J SYST SOFTWARE JI J. Syst. Softw. PD JUL-AUG PY 1995 VL 30 IS 1-2 BP 117 EP 125 DI 10.1016/0164-1212(94)00120-C PG 9 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA RC945 UT WOS:A1995RC94500008 ER PT J AU PARTHASARATHY, TA MAH, TI FOLSOM, CA KATZ, AP AF PARTHASARATHY, TA MAH, TI FOLSOM, CA KATZ, AP TI MICROSTRUCTURAL STABILITY OF NICALON AT 1000-DEGREES-C IN AIR AFTER EXPOSURE TO SALT (NACL) WATER SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note ID SILICON-CARBIDE; FIBERS AB When either uncoated or BN-coated Nicalon fibers are exposed to water saturated with NaCl before being annealed in air at 1000 degrees C, accelerated degradation of the structure of the fiber occurs. The fiber surface oxidizes to tridymite instead of vitreous silica, and the crystallites of SIC in Nicalon begin to grow. These findings suggest that prior exposure to salt water may cause appreciable debit in the mechanical strength of Nicalon fibers with time at 1000 degrees C in air. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP PARTHASARATHY, TA (reprint author), UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432, USA. RI Parthasarathy, Triplicane/B-7146-2011 OI Parthasarathy, Triplicane/0000-0002-5449-9754 NR 15 TC 12 Z9 12 U1 0 U2 3 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD JUL PY 1995 VL 78 IS 7 BP 1992 EP 1996 DI 10.1111/j.1151-2916.1995.tb08927.x PG 5 WC Materials Science, Ceramics SC Materials Science GA RJ680 UT WOS:A1995RJ68000048 ER PT J AU Hall, CD AF Hall, CD TI Spinup dynamics of biaxial gyrostats SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article AB We study the spinup dynamics of gyrostats containing two axisymmetric rotors which are parallel to principal axes of the gyrostat. Spinup of the rotors is due to small constant torques applied by the platform. The dynamics are described by five first-order ordinary differential equations. Conservation of angular momentum is used to reduce the order by one; this reduction separates the fast and slow variables so that averaging may be applied, giving a further approximate reduction to a system of three equations for the slow variables. Visualization of spinup dynamics in the slow space makes it possible to predict and avoid resonance conditions which may result in abrupt orientation changes. RP Hall, CD (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 10 Z9 10 U1 0 U2 0 PU AMER ASTRONAUTICAL SOC PI SPRINGFIELD PA 6352 ROLLING MILL PLACE SUITE 102, SPRINGFIELD, VA 22152 SN 0021-9142 J9 J ASTRONAUT SCI JI J. Astronaut. Sci. PD JUL-SEP PY 1995 VL 43 IS 3 BP 263 EP 275 PG 13 WC Engineering, Aerospace SC Engineering GA TM799 UT WOS:A1995TM79900003 ER PT J AU Thorne, JD Bain, RD AF Thorne, JD Bain, RD TI Series reversion inversion of Lambert's Time Function SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article AB The time of flight of a two-body orbit may be determined by integrating the radial velocity equation for a conic section. The resulting expression is sometimes called Lambert's Time Function, which depends on the gravitational constant, two position vectors, and the semi-major axis of the conic flight path. For mission planning purposes, it is often desirable to know the semi-major axis as a function of time, rather than the reverse. Normally, a root finding technique such as Newton-Raphson is employed to find the value of a characteristic orbital parameter which matches a given time of flight. Alternatively, Lambert's Time Function may be expanded as a power series involving the inverse semimajor axis. The expression for semi-major axis is then determined through series reversion and inversion of the resulting series. A simplified method of obtaining the series coefficients is given, as well as a numerical study of convergence properties. RP Thorne, JD (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 6 Z9 7 U1 0 U2 0 PU AMER ASTRONAUTICAL SOC PI SPRINGFIELD PA 6352 ROLLING MILL PLACE SUITE 102, SPRINGFIELD, VA 22152 SN 0021-9142 J9 J ASTRONAUT SCI JI J. Astronaut. Sci. PD JUL-SEP PY 1995 VL 43 IS 3 BP 277 EP 287 PG 11 WC Engineering, Aerospace SC Engineering GA TM799 UT WOS:A1995TM79900004 ER PT J AU BANASZAK, D CAMDEN, MP AF BANASZAK, D CAMDEN, MP TI STATIC AND DYNAMIC CALIBRATION OF PRESSURE TRANSDUCERS AT ELEVATED-TEMPERATURES SO JOURNAL OF THE INSTITUTE OF ENVIRONMENTAL SCIENCES LA English DT Article DE MICROPHONE; PRESSURE TRANSDUCER; HIGH TEMPERATURE; ACOUSTICS; STATIC CALIBRATION; DYNAMIC CALIBRATION; INSTRUMENTATION; MEASUREMENT AB The Air Force conducts tests requiring measurement of high dynamic pressures in high-temperature environments. Such tests require measurement of dynamic pressures created by jet engines, turbulent airflow along hot areas of aircraft structures, and acoustic levels in Air Force test chambers such as acoustic chambers, wind tunnels, and engine test stands. Several commercial industries also have requirements for high-temperature dynamic measurements. To address these Air Force needs for dynamic pressure measurements at high temperatures, the Structures Division of the Flight Dynamics Directorate of the Wright Laboratory evaluated dynamic pressure transducers for use in extreme acoustic and thermal environments. Transducer manufacturers were surveyed and three off-the-shelf pressure transducers capable of measuring dynamic pressures at extreme environments were identified The first model measures up to 194 dB(A) and operates up so 260 degrees C (500 degrees F). This model has an extended operating temperature lip to 1649 degrees C (3000 degrees F) when used with a water-cooled jacket. The second model is an air-cooled transducer advertised to operate up to 593 degrees C (1100 degrees F). The third model is a water-cooled transducer advertised to operate clp to 2802 degrees C (5075 degrees F). Two of the models have low sensitivity and thus require more output amplification. These two models are also larger and require larger mounting holes. The transducers were evaluated at various static pressures, acoustic levels, and temperatures. This paper describes the procedures used to calibrate these transducers clp to a 172-dB sound pressure level (SPL) and a temperature of 732 degrees C (1350 degrees F). The results for these transducers are summarized for different static pressures, operating SPLs, and temperatures. RP BANASZAK, D (reprint author), WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,DIV STRUCT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU INST ENVIRONMENTAL SCI PI MOUNT PROSPECT PA 940 E NORTHWEST HIGHWAY, MOUNT PROSPECT, IL 60056 SN 1052-2883 J9 J INST ENVIRON SCI JI J. Inst. Environ. Sci. PD JUL-AUG PY 1995 VL 38 IS 4 BP 23 EP 30 PG 8 WC Engineering, Environmental; Environmental Sciences; Instruments & Instrumentation SC Engineering; Environmental Sciences & Ecology; Instruments & Instrumentation GA RX832 UT WOS:A1995RX83200006 ER PT J AU BLASCHAK, JG FRANZEN, J AF BLASCHAK, JG FRANZEN, J TI PRECURSOR PROPAGATION IN DISPERSIVE MEDIA FROM SHORT-RISE-TIME PULSES AT OBLIQUE-INCIDENCE SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID UNIFORM ASYMPTOTIC DESCRIPTION; LORENTZ MEDIUM; ELECTROMAGNETIC PULSES; OPTICAL PULSES; ABSORPTION AB The derivation and the application of a numerical method designed to study the propagation of pulsed electromagnetic fields into dispersive dielectric materials are reported. A Fourier series based methodology, appropriate for a useful class of pulse train incident signals, is presented and utilized to study the dynamics of dispersive pulse propagation in a half-space constructed of a Debye or a Lorentz model medium. Computed solutions are presented showing precursor propagation excited by pulses obliquely incident upon a planar boundary to the medium. The results show that oblique incident pulses upon a Lorentz medium can excite different types of precursor, propagating in unique directions within the half-space. RP BLASCHAK, JG (reprint author), USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 40 TC 23 Z9 23 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD JUL PY 1995 VL 12 IS 7 BP 1501 EP 1512 DI 10.1364/JOSAA.12.001501 PG 12 WC Optics SC Optics GA RF330 UT WOS:A1995RF33000010 ER PT J AU YERKES, KL HALLINAN, KP AF YERKES, KL HALLINAN, KP TI BEHAVIOR OF A MENISCUS SUBJECTED TO TRANSIENT ACCELERATIONS FOR INCREASING CAPILLARY NUMBERS SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article ID DYNAMIC CONTACT ANGLES AB This study experimentally and analytically investigates the effects of acceleration transients on the dynamic response of an unheated meniscus in a capillary tube. A capillary tube partially filled with ethyl alcohol was mounted on a centrifuge to observe the dynamic response of the meniscus subject to single and multiple cycle acceleration transients. Experimental data of the meniscus recession and advance agreed well with a one-dimensional equation of motion accounting for changes in the receding and advancing contact angle assuming a spherically shaped meniscus. Systems typified by a low Bond number, as distinguished by a small capillary tube diameter, tended to be insensitive to transverse acceleration components. It was found that the combined effects of a Bond number less than 1.5 (distinguished by a small capillary tube diameter), and capillary number greater than 10(-5) resulted in a retardation of the meniscus position, relative to the inviscid solution, due to acceleration transients. An additional retardation in the advancing meniscus position appeared to be due to an increase in the advancing contact angle with increasing capillary number. C1 UNIV DAYTON,DEPT MECH ENGN,DAYTON,OH 45469. RP YERKES, KL (reprint author), USAF,WRIGHT LAB,AERO PROPUL & POWER DIRECTORATE,WL-POOS-3,WRIGHT PATTERSON AFB,OH 45433, USA. NR 11 TC 2 Z9 2 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JUL-SEP PY 1995 VL 9 IS 3 BP 543 EP 549 DI 10.2514/3.699 PG 7 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA RK192 UT WOS:A1995RK19200023 ER PT J AU EVANS, KR KASPI, R EHRET, JE SKOWRONSKI, M JONES, CR AF EVANS, KR KASPI, R EHRET, JE SKOWRONSKI, M JONES, CR TI SURFACE-CHEMISTRY EVOLUTION DURING MOLECULAR-BEAM EPITAXY GROWTH OF INGAAS SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B LA English DT Article; Proceedings Paper CT 22nd Annual Conference on the Physics and Chemistry of Semiconductor Interfaces (PCSI-22) CY JAN 08-12, 1995 CL SCOTTSDALE, AZ SP Amer Vacuum Soc, Electr Mat & Proc Div, USN, Off Naval Res ID SEGREGATION; MBE AB Temperature-programmed desorption (TPD) measurements ate carried out in a molecular beam epitaxy (MBE) growth chamber on pseudomorphic GaAs/In0.22Ga0.78As(125 Angstrom)/GaAs single quantum wells in various stages of growth, using a line-of-sight mass spectrometer for quantitative desorption analysis. The presence of surface-segregated indium is inferred from the appearance of a relatively low binding energy (E(b) approximate to 1.5 eV) peak in the indium TPD spectra. Integration of this TPD peak provides a quantitative measure of the surface-indium population Theta(In). By incorporating the TPD experiment as a subroutine in the MBE growth program, systematic variations of growth parameters are effected and their influence on Theta(In) established. Detailed composition profiles are calculated and found to be in excellent agreement with previous results [Nagle et al., J. Cryst. Growth 127, 550 (1993)]. We find that both the bottom (InGaAs on GaAs) and top (GaAs on InGaAs) interfaces are graded over as much as 10 monolayers, with the bottom interface being indium-poor, due to the sacrificial buildup of Theta(In), and the top interface being characterized by segregation of indium into the GaAs cap, due to relatively slow incorporation of Theta(In) into the lattice after closing the indium shutter. A mon ''squarelike'' bottom interface is obtained by predeposition of a thin indium layer just before InGaAs growth, while a more ''squarelike'' top interface is obtained by ''flash-off'' of Theta(In) just after InGaAs growth. It is believed that the combination of predeposition plus flash-off produces a more truly square InGaAs/GaAs quantum well than that obtained by more standard MBE growth approaches. (C) 1995 American Vacuum Society. C1 WRIGHT STATE UNIV,DAYTON,OH 45435. CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213. TECHNOL SCI SERV,BEAVERCREEK,OH 45431. RP EVANS, KR (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 10 TC 46 Z9 46 U1 0 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 1071-1023 J9 J VAC SCI TECHNOL B JI J. Vac. Sci. Technol. B PD JUL-AUG PY 1995 VL 13 IS 4 BP 1820 EP 1823 DI 10.1116/1.587819 PG 4 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Physics, Applied SC Engineering; Science & Technology - Other Topics; Physics GA RP992 UT WOS:A1995RP99200071 ER PT J AU COOPER, TM CAMPBELL, AL CRANE, RL AF COOPER, TM CAMPBELL, AL CRANE, RL TI FORMATION OF POLYPEPTIDE-DYE MULTILAYERS BY AN ELECTROSTATIC SELF-ASSEMBLY TECHNIQUE SO LANGMUIR LA English DT Article ID SURFACE 2ND-HARMONIC GENERATION; INDUCED CIRCULAR-DICHROISM; INDUCED OPTICAL-ACTIVITY; POLY-L-LYSINE; CONGO RED; AZO DYES; FILMS; PHTHALOCYANINE; ADSORPTION; ALIGNMENT AB To demonstrate the feasibility of preparing ordered multilayers composed of charged macromolecule/dye bilayers, we used an electrostatic self-assembly technique to prepare polypeptide/dye multilayers. We immersed previously protonated silanized glass slides in aqueous solutions (1 mM) of two representative anionic dyes: rod-shaped congo red or plate-shaped copper phthalocyanine tetrasulfonic acid sodium salt and cationic polypeptide poly(L-lysine) solutions (15 mM monomer). Films resulting from up to 100 dipping cycles were characterized by UV-vis absorption spectra, ellipsometry, CD, and FT IR. FT IR spectra of film material embedded in KBr pelf ets showed an amide I band at 1654 cm(-1), suggesting thin film alpha-helical conformation. In both systems, the dye absorbance increased with the number of layers. In the copper phthalocyanine system, the absorption spectrum was a combination of phthalocyanine monomer and dimer contributions, with no evidence of higher aggregates. The congo red film dye absorption maximum was a function of the number of bilayers, suggesting congo red resided in a polar, hydrophilic environment that became less polar with increasing bilayer number. From ellipsometry measurements, the bilayer thickness in both films was determined to be 20 Angstrom. The phthalocyanine Q band showed negative-induced CD, while the congo red pi pi* band exhibited positive-induced CD The CD measurements gave evidence for ordered dye-polypeptide complexes in films greater than 100-Angstrom thickness. The current work suggested a bilayer structure where monomeric congo red or dimeric copper phthalocyanine tetrasulfonate were randomly distributed among excess poly(K) monomer bindings sites, giving clear films with no scattering centers. RP COOPER, TM (reprint author), USAF,MAT DIRECTORATE,WRIGHT LAB,ML-MLPJ 3005 P ST,STE 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 49 TC 180 Z9 184 U1 2 U2 25 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0743-7463 J9 LANGMUIR JI Langmuir PD JUL PY 1995 VL 11 IS 7 BP 2713 EP 2718 DI 10.1021/la00007a061 PG 6 WC Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA RL572 UT WOS:A1995RL57200062 ER PT J AU HOPKINS, FK AF HOPKINS, FK TI NONLINEAR MATERIALS EXTEND THE RANGE OF HIGH-POWER LASERS SO LASER FOCUS WORLD LA English DT Article AB Nonlinear crystals create tunable output from the mid UV to the far-IR, increasing the flexibility of existing lasers. RP HOPKINS, FK (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 28 Z9 30 U1 1 U2 1 PU PENNWELL PUBL CO PI NASHUA PA 5TH FLOOR TEN TARA BOULEVARD, NASHUA, NH 03062-2801 SN 0740-2511 J9 LASER FOCUS WORLD JI Laser Focus World PD JUL PY 1995 VL 31 IS 7 BP 87 EP 93 PG 7 WC Optics SC Optics GA RH754 UT WOS:A1995RH75400023 ER PT J AU PUFFER, RL AF PUFFER, RL TI SEE NAPLES - A MEMOIR OF LOVE, PEACE, AND WAR IN ITALY - ALLANBROOK,D SO LIBRARY JOURNAL LA English DT Book Review RP PUFFER, RL (reprint author), USAF,EDWARDS AFB,CA 93523, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD JUL PY 1995 VL 120 IS 12 BP 89 EP 89 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA RH984 UT WOS:A1995RH98400156 ER PT J AU SNYDER, CE GSCHWENDER, LJ AF SNYDER, CE GSCHWENDER, LJ TI FIRE-RESISTANT HYDRAULIC FLUIDS SO LUBRICATION ENGINEERING LA English DT Article AB The hazards associated with the flammability characteristics of hydraulic fluids are well known. These fluids are required to function in high pressure hydraulic systems in the presence of a variety of ignition sources. significant research and development activity has been directed toward the development of fire resistant hydraulic fluids to minimize these hazards. Three fire resistant hydraulic fluids have successfully been developed to meet this requirement. Two of these are MIL-H-83282 and MIL-H-87257, which are synthetic hydrocarbon based hydraulic fluids compatible with MIL-H-5606 and MIL-H-5606 systems materials and designs. The third is AS1241, which is phosphate ester based and is not compatible with MIL-H-5606 or its systems or materials. The advantages of these three fluids are presented and discussed. RP SNYDER, CE (reprint author), USAF,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 2 Z9 2 U1 1 U2 5 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD JUL PY 1995 VL 51 IS 7 BP 549 EP 553 PG 5 WC Engineering, Mechanical SC Engineering GA RK042 UT WOS:A1995RK04200003 ER PT J AU MCGILLEN, DJ AF MCGILLEN, DJ TI A LOW-VELOCITY APPROXIMATION FOR THE RELATIVISTIC VLASOV-MAXWELL SYSTEM SO MATHEMATICAL METHODS IN THE APPLIED SCIENCES LA English DT Article AB An approximation for the relativistic Vlasov-Maxwell (RVM) system of partial differential equations in the one-space, two-momenta case is proposed. The speed of light, c, appears as a parameter in this system. The approximation is obtained by modifying certain integral operators appearing in integral representations, due to Glassey and Strauss, of the electric and magnetic fields, and replaces the hyperbolic Maxwell system with one that is elliptic in nature (for each fixed t). Solutions of the modified problem are shown to converge in a pointwise sense to solutions of(RVM) at the asymptotic rate of 1/c(2) as c tends to infinity. RP MCGILLEN, DJ (reprint author), USAF ACAD,DEPT MATH SCI,COLORADO SPRINGS,CO 80840, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 0170-4214 J9 MATH METHOD APPL SCI JI Math. Meth. Appl. Sci. PD JUL PY 1995 VL 18 IS 9 BP 739 EP 753 DI 10.1002/mma.1670180907 PG 15 WC Mathematics, Applied SC Mathematics GA RJ400 UT WOS:A1995RJ40000006 ER PT J AU CUMMINGS, WH AF CUMMINGS, WH TI AGE GROUP-DIFFERENCES AND ESTIMATED FREQUENCIES OF THE MYERS-BRIGGS TYPE INDICATOR PREFERENCES SO MEASUREMENT AND EVALUATION IN COUNSELING AND DEVELOPMENT LA English DT Article AB Analyses of key tables in the Myers-Briggs Type Indicator Atlas of Type Tables (Macdaid, McCaulley, & Kainz, 1986) showed significant age group effects, leading to reestimation of the population norms. RP CUMMINGS, WH (reprint author), USAF,DPXET,1040 AIR FORCE PENTAGON,WASHINGTON,DC 20330, USA. NR 19 TC 4 Z9 4 U1 0 U2 1 PU AMER COUNSELING ASSOC PI ALEXANDRIA PA 5999 STEVENSON AVE, ALEXANDRIA, VA 22304-3300 SN 0748-1756 J9 MEAS EVAL COUNS DEV JI Meas. Eval. Couns. Dev. PD JUL PY 1995 VL 28 IS 2 BP 69 EP 77 PG 9 WC Psychology, Educational; Psychology, Applied SC Psychology GA RE032 UT WOS:A1995RE03200002 ER PT J AU SHEN, GS SEMIATIN, SL SHIVPURI, R AF SHEN, GS SEMIATIN, SL SHIVPURI, R TI MODELING MICROSTRUCTURAL DEVELOPMENT DURING THE FORGING OF WASPALOY SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article AB A model for predicting the evolution of microstructure in Waspaloy during thermomechanical processing was developed in terms of dynamic recrystallization (DRX), metadynamic recrystallization, and grain growth phenomena. Three sets of experiments were conducted to develop the model: (1) preheating tests to model grain growth prior to hot deformation; (2) compression tests in a Gleeble testing machine with different deformation and cooling conditions to model DRX, metadynamic recrystallization, and short time grain growth during the post deformation dwell period and cooling; and (3) pancake and closed die forging tests conducted in a manufacturing environment to verify and refine the model. The microstructural model was combined with finite element modeling (FEM) to predict microstructure development during forging of Waspaloy. Model predictions showed good agreement with microstructures obtained in actual isothermal and hammer forgings carried out at a forging shop. C1 WRIGHT LAB,DIV MET & CERAM,WRIGHT PATTERSON AFB,OH 45433. OHIO STATE UNIV,DEPT IND & SYST ENGN,COLUMBUS,OH 43210. OHIO STATE UNIV,ENGN RES CTR NET SHAPE MFG,COLUMBUS,OH 43210. RP SHEN, GS (reprint author), LADISH CO INC,RES & DEV,CUDAHY,WI 53110, USA. RI SEMIATIN, SHELDON/E-7264-2017; OI Shivpuri, Rajiv/0000-0003-3635-951X NR 25 TC 96 Z9 114 U1 0 U2 9 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JUL PY 1995 VL 26 IS 7 BP 1795 EP 1803 DI 10.1007/BF02670767 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RJ768 UT WOS:A1995RJ76800018 ER PT J AU NICOLAOU, PD SEMIATIN, SL ZIMMER, WH AF NICOLAOU, PD SEMIATIN, SL ZIMMER, WH TI EFFECT OF PROCESS PARAMETER VARIABILITY ON HIP CONSOLIDATION OF CONTINUOUS-FIBER, METAL-MATRIX COMPOSITES MADE FROM FOIL/FIBER/FOIL LAYUPS SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Note ID FRACTURE MECHANISMS; BEHAVIOR RP NICOLAOU, PD (reprint author), WRIGHT LAB,MLLN,DIV MET & CERAM,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 15 TC 1 Z9 1 U1 0 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JUL PY 1995 VL 26 IS 7 BP 1906 EP 1908 DI 10.1007/BF02670779 PG 3 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA RJ768 UT WOS:A1995RJ76800030 ER PT J AU MARTIN, EA VACCARO, K SPAZIANI, SM LORENZO, JP AF MARTIN, EA VACCARO, K SPAZIANI, SM LORENZO, JP TI BACKSIDE ILLUMINATION PROCESSING TECHNOLOGY FOR INGAAS/INALAS/INP PHOTOFETS AND MSMS SO MICROELECTRONICS JOURNAL LA English DT Article ID INDIUM TIN OXIDE; GAAS; PHOTODETECTORS; PERFORMANCE AB Despite the theoretical and demonstrated advantages of numerous discrete devices for electro-optical systems applications, integration remains a challenge. In particular, highly agile integration strategies, fully optimized device structures, and processing protocols have yet to be developed. Many of the unique processing and packaging constraints imposed by standard electro-optical circuit fabrication are overcome by the novel substrate removal process reported here. We demonstrate an InGaAs/InAlAs/InP MSM and photofet process advance which lends itself generally to integration of dissimilar materials and device designs, and is applicable to many other component types. Passivation techniques for the frontside and backside are explored for optimized discrete components as well as integrated devices. Detector performance is seen to increase by 35x for the MSM detectors, and we have obtained responsivity of more than 2.5 A/W for the photofets. The bonding and substrate removal process allows polylithic integration with various surrogate substrates. RP MARTIN, EA (reprint author), USAF,ROME LAB,EROC,PHOTON COMPOSITES BRANCH,BEDFORD,MA 01731, USA. NR 19 TC 3 Z9 3 U1 0 U2 1 PU ELSEVIER ADVANCED TECHNOLOGY PI OXFORD PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0026-2692 J9 MICROELECTR J JI Microelectron. J. PD JUL PY 1995 VL 26 IS 5 BP 497 EP 505 DI 10.1016/0026-2692(95)98951-M PG 9 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology SC Engineering; Science & Technology - Other Topics GA RP107 UT WOS:A1995RP10700010 ER PT J AU FRANCK, CC FRANCK, JB AF FRANCK, CC FRANCK, JB TI A PRACTICAL EXAMPLE USING THE MOT METHOD SO MICROWAVE JOURNAL LA English DT Article C1 AFOSR,BOLLING AFB,WASHINGTON,DC. RP FRANCK, CC (reprint author), RANNOCH CORP,ALEXANDRIA,VA, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU HORIZON HOUSE-MICROWAVE PI NORWOOD PA 685 CANTON ST, NORWOOD, MA 02062 SN 0192-6225 J9 MICROWAVE J JI Microw. J. PD JUL PY 1995 VL 38 IS 7 BP 112 EP & PG 0 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RK935 UT WOS:A1995RK93500007 ER PT J AU UVEGES, RE GRIMWOOD, RE SLAWSKY, LD MARKS, JG AF UVEGES, RE GRIMWOOD, RE SLAWSKY, LD MARKS, JG TI EPIDEMIOLOGY OF HAND DERMATITIS IN DENTAL PERSONNEL SO MILITARY MEDICINE LA English DT Article AB Background: Dental personnel are prone to frequent bouts of hand dermatitis. This has been attributed to hand washing, occupational exposure to a multitude of possible sensitizers, and frequent latex glove use. There has been some conflict in the literature as to the true frequency of allergic contact dermatitis in dental personnel. Objective: The purpose of this investigation was to quantify the frequency of allergic contact dermatitis and contact urticaria in a large group of Air Force dental personnel. Methods: Four hundred forty-nine dental personnel were surveyed for hand dermatitis. Positive responders were interviewed and examined. Patients with histories most consistent with allergic contact dermatitis were patch tested to a standard and a dental tray. Results: Of the 449 personnel completing our survey, 169 had a positive history of hand dermatitis. One hundred twenty of these were interviewed and examined, of which 27 patients gave a history most consistent with allergic contact dermatitis and were subjected to patch testing. Only 3 patients had relevant positive reactions to the allergens on the standard or dental trays. All others (93) were diagnosed with irritant contact dermatitis. None had contact urticaria to latex. Conclusion: The frequency of hand dermatitis in our dental personnel is consistent with that in other published studies (37.6%). The majority of hand dermatitis occurring in this group is due to irritant contact dermatitis; the frequency of allergic contact dermatitis is very low (0.67%). None had contact urticaria. RP UVEGES, RE (reprint author), USAF,MED CTR,DEPT DERMATOL,1255 WILFORD HALL LOOP,LACKLAND AFB,TX 78236, USA. NR 0 TC 11 Z9 11 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUL PY 1995 VL 160 IS 7 BP 335 EP 338 PG 4 WC Medicine, General & Internal SC General & Internal Medicine GA RM138 UT WOS:A1995RM13800005 PM 7659238 ER PT J AU BAROHN, RJ AMATO, AA SAHENK, Z KISSEL, JT MENDELL, JR AF BAROHN, RJ AMATO, AA SAHENK, Z KISSEL, JT MENDELL, JR TI INCLUSION-BODY MYOSITIS - EXPLANATION FOR POOR RESPONSE TO IMMUNOSUPPRESSIVE THERAPY SO NEUROLOGY LA English DT Article ID INFLAMMATORY MYOPATHY; ALZHEIMERS-DISEASE; MUSCULAR-DYSTROPHY; MUSCLE-FIBERS AB We treated eight patients who had inclusion body myositis (IBM) with oral prednisone therapy, and we performed muscle biopsies before and after treatment. We documented the patients' clinical response to therapy and changes in serum CK. Although the serum CK level fell, muscle strength worsened after prednisone treatment. In addition, while inflammation decreased in the muscle biopsy specimens, the number of vacuolated and amyloid-positive fibers increased after oral prednisone therapy. These observations indicate that the inflammatory response in IBM may play a secondary role in the pathogenesis of IBM. The unique findings of intracellular amyloid deposits and rimmed vacuoles distinguishing IBM from other inflammatory myopathies, and recognition that suppression of inflammation has no effect on the clinical course, suggest that IBM, may represent a degenerative muscle disorder. C1 WILFORD HALL USAF MED CTR,MED CTR,DEPT NEUROL,SAN ANTONIO,TX 78236. OHIO STATE UNIV,SCH MED,DEPT NEUROL,COLUMBUS,OH 43210. RP BAROHN, RJ (reprint author), UNIV TEXAS,SW MED CTR,DEPT NEUROL,5323 HARRY HINES BLVD,DALLAS,TX 75235, USA. NR 21 TC 71 Z9 72 U1 0 U2 0 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 0028-3878 J9 NEUROLOGY JI Neurology PD JUL PY 1995 VL 45 IS 7 BP 1302 EP 1304 PG 3 WC Clinical Neurology SC Neurosciences & Neurology GA RJ279 UT WOS:A1995RJ27900013 PM 7617187 ER PT J AU MINOR, B MATHEWS, K AF MINOR, B MATHEWS, K TI EXPONENTIAL CHARACTERISTIC SPATIAL QUADRATURE FOR DISCRETE ORDINATES RADIATION TRANSPORT WITH RECTANGULAR CELLS SO NUCLEAR SCIENCE AND ENGINEERING LA English DT Article AB The exponential characteristic (EC) spatial quadrature for discrete ordinates neutral particle transport previously introduced in slab geometry is extended here to x-y geometry with rectangular cells. The method is derived and compared with current methods. It is similar to the linear characteristic (LC) quadrature (a linear-linear moments method) but differs by assuming an exponential distribution of the scattering source within each cell, S(x) = a exp(bx + cy), whose parameters are rootsolved to match the known (from the previous iteration) spatial average and first moments of the source over the cell. Similarly, EC assumes exponential distributions of flux along cell edges through which particles enter the cell, with parameters chosen to match the average and first moments of flux, as passed from the adjacent, upstream cells (or as determined by boundary conditions). Like the linear adaptive (LA) method, EC is positive and nonlinear. It is more accurate than LA and does not require subdivision of cells. The nonlinearity has not interfered with convergence. The exponential moment functions, which were introduced with the slab geometry method, are extended to arbitrary dimensions (numbers of arguments) and used to avoid numerical ill conditioning. As in slab geometry, the method approaches O(Delta x(4)) global truncation error on fine-enough meshes, while the error is insensitive to mesh size for coarse meshes. Performance of the method is compared with that of the step characteristic, LC, linear nodal, step adaptive, and LA schemes. The EC method is a strong performer with scattering ratios ranging from O to 0.9 (the range tested), particularly so for lower scattering ratios. As in slab geometry, EC is computationally more costly per cell than current methods but can be accurate with very thick cells, leading to increased computational efficiency on appropriate problems. RP MINOR, B (reprint author), USAF,INST TECHNOL,ENP,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 8 Z9 8 U1 0 U2 0 PU AMER NUCLEAR SOCIETY PI LA GRANGE PK PA 555 N KENSINGTON AVENUE, LA GRANGE PK, IL 60525 SN 0029-5639 J9 NUCL SCI ENG JI Nucl. Sci. Eng. PD JUL PY 1995 VL 120 IS 3 BP 165 EP 186 PG 22 WC Nuclear Science & Technology SC Nuclear Science & Technology GA RJ531 UT WOS:A1995RJ53100002 ER PT J AU HILTON, TJ SCHWARTZ, RS AF HILTON, TJ SCHWARTZ, RS TI THE EFFECT OF AIR THINNING ON DENTIN ADHESIVE BOND STRENGTH SO OPERATIVE DENTISTRY LA English DT Article ID MARGINAL ADAPTATION; RESIN; RESTORATIONS; COMPOSITES; STRESS; SEM AB The purpose of this study was to determine if air thinning three dentin adhesives would affect bond strength to dentin. Ninety human molars were mounted in acrylic and the occlusal surfaces ground to expose a flat dentin surface. Thirty teeth were randomly assigned to one of the following dentin bonding agent/composite combinations: A) Universal Bond 3/TPH (Caulk), B) All-Bond 2/Bis-Fil-P (Bisco), and C) Scotchbond Multi-Purpose/Z-100 (3M). The primers were applied following the manufacturers' instructions. The adhesives were applied by two methods. A thin layer of adhesive was applied with a brush to 15 specimens in each group and light cured. Adhesive was brushed on to the remaining 15 teeth in the group, air thinned for 3 seconds, and then polymerized. The appropriate composite was applied in 2 mm increments and light cured utilizing a 5 mm-in-diameter split Teflon mold. Following 3 months of water storage, all groups were shear tested to failure on an Instron Universal Testing Machine. Bond strength was significantly higher in all groups when the dentin bonding agent was painted on without being air thinned. Scotchbond Multi-Purpose had significantly higher bond strength than All-Bond 2, which had significantly higher bond strength than Universal Bond 3. RP HILTON, TJ (reprint author), WILFORD HALL USAF MED CTR,1615 TRUEMPER ST,LACKLAND AFB,TX 78236, USA. NR 19 TC 34 Z9 34 U1 0 U2 1 PU UNIV WASHINGTON PI SEATTLE PA SCHOOL DENTISTRY SM-57, SEATTLE, WA 98195 SN 0361-7734 J9 OPER DENT JI Oper. Dent. PD JUL-AUG PY 1995 VL 20 IS 4 BP 133 EP 137 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RG162 UT WOS:A1995RG16200003 PM 8700780 ER PT J AU ARRINGTON, ED MILLER, MD AF ARRINGTON, ED MILLER, MD TI SKELETAL-MUSCLE INJURIES SO ORTHOPEDIC CLINICS OF NORTH AMERICA LA English DT Article ID ACUTE RENAL-FAILURE; MYOSITIS-OSSIFICANS; STRAIN INJURY; RHABDOMYOLYSIS; EXERCISE; MYOGLOBINURIA; SORENESS AB Muscular injuries are extremely common in athletes. Treatment of these injuries is based on a solid understanding of anatomy, physiology, and healing of skeletal muscle. Injuries discussed include contusions, hematomas, myositis ossificans, delayed onset soreness, strain, rhabdomyolysis, and lacerations. Diagnosis and treatment of these injuries is essential for the sports medicine physicina. C1 UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814. USAF ACAD,DEPT ORTHOPAED SURG,COLORADO SPRINGS,CO 80840. RP ARRINGTON, ED (reprint author), BROOKE ARMY MED CTR,ORTHOPAED SURG SERV,FT SAM HOUSTON,TX 78234, USA. NR 79 TC 28 Z9 29 U1 1 U2 3 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0030-5898 J9 ORTHOP CLIN N AM JI Orthop. Clin. North Am. PD JUL PY 1995 VL 26 IS 3 BP 411 EP 422 PG 12 WC Orthopedics SC Orthopedics GA RK060 UT WOS:A1995RK06000002 PM 7609956 ER PT J AU MOISES, MA ARRIAGA, A CARRIER, D HOUSTON, CGD AF MOISES, MA ARRIAGA, A CARRIER, D HOUSTON, CGD TI FALSE-POSITIVE MAGNETIC-RESONANCE-IMAGING OF SMALL INTERNAL AUDITORY-CANAL TUMORS - A CLINICAL, RADIOLOGIC, AND PATHOLOGICAL CORRELATION STUDY SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Article ID INTRACANALICULAR ACOUSTIC NEUROMA; ENHANCED MR; GADOLINIUM AB Magnetic resonance imaging with gadolinium facilitates the early diagnosis of internal auditory canal tumors at a small enough stage to permit increasing application of hearing preservation surgical techniques. Surgeons report successful removal of tumors as small as 3 mm, which are diagnosed with enhanced magnetic resonance imaging. A retrospective study was performed to determine the risk of false-positive ''tumor'' diagnosis with enhanced magnetic resonance imaging. We reviewed the imaging records, office notes, and surgical records of 112 consecutive ''tumors'' involving the internal auditory canal treated by the Wilford Hall USAF Medical Center Neurotology Service between July 1991 and July 1994. Two categories of false-positive magnetic resonance imaging were identified: (1) surgically confirmed absence of internal auditory canal neoplasm and (2) spontaneous resolution of the internal auditory canal lesions on subsequent, enhanced magnetic resonance images. Overall, eight false-positive scans were identified. Three were surgically confirmed as false-positive, and five resolved on subsequent imaging studies. All cases were smaller than 6 mm and involved the distal internal auditory canal (fundus). The surgically confirmed cases were approached through a middle fossa technique with successful hearing preservation. The overall rate of surgical false-positive results was 3.5% (3 cases in 86 surgeries). However, the overall false-positive rate for intracanalicular ''tumors'' was 32% (8 cases in 25 intracanalicular lesions). Although hearing preservation is more likely in small lesions, the surgeon must consider the possibility that an internal auditory canal lesion smaller than 6 mm may actually represent a nonneoplastic process. Enhancing lesions limited to the internal auditory canal fundus may be treated by reimaging the patient in 6 months after the first image rather than by prompt surgical exploration. C1 WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT RADIOL,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. NR 11 TC 0 Z9 0 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD JUL PY 1995 VL 113 IS 1 BP 61 EP 70 PG 10 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA RH255 UT WOS:A1995RH25500010 ER PT J AU BRAUER, ML DAJANI, I KESTER, JJ AF BRAUER, ML DAJANI, I KESTER, JJ TI POLARIZATION DEPENDENCE OF 2ND-HARMONIC GENERATION IN THIN-FILM PLANAR WAVE-GUIDES SO PHYSICAL REVIEW A LA English DT Article ID FIBER RP BRAUER, ML (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JUL PY 1995 VL 52 IS 1 BP 705 EP 709 DI 10.1103/PhysRevA.52.705 PG 5 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RH932 UT WOS:A1995RH93200086 ER PT J AU BUNNING, TJ NATARAJAN, LV TONDIGLIA, V SUTHERLAND, RL VEZIE, DL ADAMS, WW AF BUNNING, TJ NATARAJAN, LV TONDIGLIA, V SUTHERLAND, RL VEZIE, DL ADAMS, WW TI THE MORPHOLOGY AND PERFORMANCE OF HOLOGRAPHIC TRANSMISSION GRATINGS RECORDED IN POLYMER-DISPERSED LIQUID-CRYSTALS SO POLYMER LA English DT Article DE PHASE SEPARATION; POLYMER DISPERSED LIQUID CRYSTAL; MORPHOLOGY ID ANISOTROPIC PHOTOPOLYMERIZATION; KINETICS AB Holographic transmission gratings are formed by the anisotropic visible laser radiation curing of a multifunctional acrylate monomer blended with the liquid crystal (LC) mixture E7. This results in an anisotropic spatial distribution of phase-separated LC droplets within the photochemically cured polymer matrix. The morphology of thin films (5-20 mu m) containing the gratings is examined by low-voltage, high-resolution scanning electron microscopy and transmission electron microscopy. Low concentrations of E7 (16% LC) coupled with rapid curing kinetics result in the formation of narrow LC-rich Bragg lamellae without well defined boundaries. These LC-rich lamellae, with approximate widths of 100 nm, are composed of small droplets measuring 20-50 nm in diameter. Increasing the concentration of LC in the prepolymer mixture results in larger lamellae (canals) of LC-rich material. Films formed from a mixture containing the highest LC concentration (34% LC) exhibited lamellae approximately 200-250 nm wide that are separated by polymer lamellae that also possess a small fraction of phase-separated LC droplets. The other variable examined in detail, laser writing intensity, has little effect on the morphologies exhibited in these films. The morphology is related to the performance (diffraction efficiency, transmission, switching times and fields) through a simple model. C1 LAI,DAYTON,OH 45431. USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP BUNNING, TJ (reprint author), SCI APPLICAT INT CORP,DAYTON,OH 45431, USA. RI Adams, Wade/A-7305-2010 NR 25 TC 107 Z9 107 U1 1 U2 7 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0032-3861 J9 POLYMER JI Polymer PD JUL PY 1995 VL 36 IS 14 BP 2699 EP 2708 DI 10.1016/0032-3861(95)93646-4 PG 10 WC Polymer Science SC Polymer Science GA RK285 UT WOS:A1995RK28500004 ER PT J AU SHERRY, CJ BLICK, DW WALTERS, TJ BROWN, GC MURPHY, MR AF SHERRY, CJ BLICK, DW WALTERS, TJ BROWN, GC MURPHY, MR TI LACK OF BEHAVIORAL-EFFECTS IN NONHUMAN-PRIMATES AFTER EXPOSURE TO ULTRAWIDEBAND ELECTROMAGNETIC-RADIATION IN THE MICROWAVE FREQUENCY-RANGE SO RADIATION RESEARCH LA English DT Article ID SOMAN TOXICITY; CHOLINESTERASES; PROTECTION AB The effect of acute exposure to ultrawideband (UWB) electromagnetic radiation on the Primate Equilibrium Platform (PEP) task, where the monkey's task is to manipulate a joystick control to compensate for the random perturbations in the pitch plane that are generated by a computer at unpredictable intervals, was examined. The duration of the UWB exposure was 2 min at a pulse repetition rate of 60 Hz (total of 7200 pulses). The bandwidth of the pulse was 100 MHz to 1.5 GHz (peak power between 250-500 MHz) with a peak E-field strength of 250 kV/m. Each monkey was exposed twice. The interval between exposures was 6 days. The exposure to UWB electromagnetic radiation had no effect on PEP performance when tested immediately after exposure. (C) 1995 by Radiation Research Society C1 ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV RADIOFREQUENCY RADIAT,BROOKS AFB,TX 78235. RP SHERRY, CJ (reprint author), ARMSTRONG LAB,SYST RES LABS,BROOKS AFB,TX 78235, USA. NR 23 TC 28 Z9 28 U1 0 U2 1 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD JUL PY 1995 VL 143 IS 1 BP 93 EP 97 DI 10.2307/3578930 PG 5 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA RG265 UT WOS:A1995RG26500012 PM 7597150 ER PT J AU FELLER, JF TIRMAN, PFJ STEINBACH, LS ZUCCONI, F AF FELLER, JF TIRMAN, PFJ STEINBACH, LS ZUCCONI, F TI MAGNETIC-RESONANCE-IMAGING OF THE SHOULDER - REVIEW SO SEMINARS IN ROENTGENOLOGY LA English DT Review ID ROTATOR CUFF TEARS; MR ARTHROGRAPHY; GLENOID LABRUM; CT ARTHROGRAPHY; COMPLEX; DIAGNOSIS; INJURIES; LESIONS; JOINT C1 SAN FRANCISCO MAGNET RESONANCE CTR,DEPT RADIOL,SAN FRANCISCO,CA. UNIV CALIF SAN FRANCISCO,DEPT RADIOL,SAN FRANCISCO,CA. UNIV HOSP CATTINARA,DEPT RADIOL,TRIESTE,ITALY. RP FELLER, JF (reprint author), DAVID GRANT MED CTR,DEPT RADIOL,60 MDSS-SGSAR,101 BODIN CIRCLE,TRAVIS AFB,CA 94535, USA. NR 62 TC 10 Z9 10 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0037-198X J9 SEMIN ROENTGENOL JI Semin. Roentgenology PD JUL PY 1995 VL 30 IS 3 BP 224 EP 240 DI 10.1016/S0037-198X(05)80013-6 PG 17 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA RL352 UT WOS:A1995RL35200003 PM 7570077 ER PT J AU THIRINGER, JK COSTANTINO, PD HOUSTON, G AF THIRINGER, JK COSTANTINO, PD HOUSTON, G TI SINONASAL HEMANGIOPERICYTOMA - CASE-REPORT AND LITERATURE-REVIEW SO SKULL BASE SURGERY LA English DT Note ID MALIGNANT HEMANGIOPERICYTOMA; NASAL CAVITY; NECK; CHEMOTHERAPY; PATHOLOGY; HEAD AB Hemangiopericytoma (HPC) is a rare vascular tumor that can arise in any organ system, but occurs most frequently in skeletal muscle. We present a case of a primary sphenoid sinus HPC unusual for its spontaneous remission after biopsy. There have been approximately 55 cases of sinonasal HPC reported in the literature, representing less than 5% of all lesions. In general, HPC behaves aggressively, demonstrating greater than 50% local recurrence and 10% metastatic disease. Although extended surgical resection is traditionally considered the most effective therapy for all HPC, critical literature review does not support this method of treatment for HPC occurring in the paranasal sinuses and skull base. Long-term follow-up indicates that the majority of sinonasal HPC have a benign clinical course regardless of treatment. As a result, we dd not recommend extended resection as the initial therapy for sinonasal HPC. Instead, a period of observation coupled with serial MRI or CT scans should be used to detect tumor progression. These indolent tumors should undergo extended resection only after progression has been confirmed. In addition to the case report, a synopsis of the reviewed literature and a summary of treatment recommendations are also presented. C1 WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG & ORAL PATHOL,LACKLAND AFB,TX. NR 26 TC 6 Z9 6 U1 0 U2 0 PU THIEME MEDICAL PUBL INC PI NEW YORK PA 381 PARK AVE SOUTH, NEW YORK, NY 10016 SN 1052-1453 J9 SKULL BASE SURG JI Skull Base Surg. PD JUL PY 1995 VL 5 IS 3 BP 185 EP 190 DI 10.1055/s-2008-1058934 PG 6 WC Clinical Neurology; Otorhinolaryngology; Surgery SC Neurosciences & Neurology; Otorhinolaryngology; Surgery GA RQ258 UT WOS:A1995RQ25800009 PM 17170946 ER PT J AU KAGER, A LIOU, JJ HUANG, CI AF KAGER, A LIOU, JJ HUANG, CI TI A NUMERICAL STUDY OF THE EFFECT OF BASE AND COLLECTOR STRUCTURES ON THE PERFORMANCE OF ALGAAS/GAAS MULTI-FINGER HBTS SO SOLID-STATE ELECTRONICS LA English DT Article ID HETEROJUNCTION BIPOLAR-TRANSISTORS AB A numerical analysis is presented to investigate different base and collector structures on the d.c. and a.c. performance of AlGaAs/GaAs multi-finger heterojunction bipolar transistors (HBTs). The simulation is carried out using a two-dimensional device simulator called MEDICI. Five possible structures are studied and compared. The results show that different structures give rise to different electric fields in the base-collector junction and lattice temperatures in the HBT, which consequently affect the HBT's cutoff frequency and current gain, respectively. The physical mechanisms governing these changes are also discussed in detail. C1 UNIV CENT FLORIDA,DEPT ELECT & COMP ENGN,ORLANDO,FL 32816. USAF,WRIGHT LAB,DIRECTORATE SOLID STATE ELECTR,WRIGHT PATTERSON AFB,OH 45433. NR 7 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD JUL PY 1995 VL 38 IS 7 BP 1339 EP 1346 DI 10.1016/0038-1101(94)00268-K PG 8 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA RD579 UT WOS:A1995RD57900010 ER PT J AU LIN, BS GOODRICH, WH AF LIN, BS GOODRICH, WH TI AIR-FORCE TOTAL QUALITY MANAGEMENT - AN ASSESSMENT OF ITS EFFECTIVENESS SO TOTAL QUALITY MANAGEMENT LA English DT Article AB This study reports the results of a regional survey on total quality management (TQM) in the United States Air Force, the Quality Air Force (QAF) programme. The primary purpose is to assess the effectiveness of the QAF programme early in its implementation. The assessment is divided into three parts: current implementation of QAF principles, the effectiveness of the QAF programme and the ability of the QAF programme to meet the future needs of the Air Force. Findings from this survey can be used to illustrate three generic themes in TQM. C1 SVMH,SERV SQUADRON 2,BARKSDALE AFB,LA 71110. RP LIN, BS (reprint author), LOUISIANA STATE UNIV,COLL BUSINESS ADM,DEPT MANAGEMENT & MKT,SHREVEPORT,LA 71115, USA. OI Lin, Binshan/0000-0002-8481-302X NR 20 TC 2 Z9 2 U1 0 U2 0 PU CARFAX PUBL CO PI ABINGDON PA PO BOX 25, ABINGDON, OXON, ENGLAND OX14 3UE SN 0954-4127 J9 TOTAL QUAL MANAGE JI Total Qual. Manage. PD JUL PY 1995 VL 6 IS 3 BP 243 EP 253 PG 11 WC Management SC Business & Economics GA RQ466 UT WOS:A1995RQ46600005 ER PT J AU Mattie, DR Marit, GB Flemming, CD Cooper, JR AF Mattie, DR Marit, GB Flemming, CD Cooper, JR TI The effects of JP-8 jet fuel on male Sprague-Dawley rats after a 90-day exposure by oral gavage SO TOXICOLOGY AND INDUSTRIAL HEALTH LA English DT Article DE alpha 2-microglobin nephropathy; gastritis; gavage; jet fuel; male Sprague-Dawley rats; perianal dermatitis ID VAPOR INHALATION TOXICITY; FISCHER-344 RATS; D-LIMONENE; DECALIN; MICE AB The U.S. Air Force is converting from JP-4 jet fuel to the less volatile JP-8 jet fuel, which is similar to commercial Jet Fuel A. Our previous 90-day inhalation study with JP-8 vapor, using F-344 rats and C57BL6 mice, resulted in no treatment-related adverse effects other than alpha 2-microglobin nephropathy in male rats (Mattie et at, 1991). In the present study, male rats were dosed with near JP-8 (0, 750, 1500, 3000 mg/kg) daily by gavage for 90 days in an effort to characterize the kidney lesion and assess further any additional adverse effects associated with prolonged oral exposure to this fuel. Results of this study revealed a significant dose-dependent decrease in body weights of rats exposed to JP-8. Male rat-specific alpha 2-microglobin nephropathy was observed by histopathologic examination. A number of significant changes were also seen in blood and urine that were not dose-dependent. Additional treatment-related effects were a gastritis and a perianal dermatitis. Although there were no histopathological or weight changes in the livers of exposed rats, there was an increase in the liver enzymes AST and ALT. The elevated enzymes did not increase with increasing dose of JP-8. C1 MANTECH ENVIRONM TECHNOL INC,DAYTON,OH. RP Mattie, DR (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV TOXICOL,OL AL HSC OETB BLDG 79,2856 G ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 36 Z9 36 U1 0 U2 0 PU PRINCETON SCIENTIFIC PUBL INC PI PRINCETON PA PO BOX 2155, PRINCETON, NJ 08543 SN 0748-2337 J9 TOXICOL IND HEALTH JI Toxicol. Ind. Health PD JUL-AUG PY 1995 VL 11 IS 4 BP 423 EP 435 PG 13 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA TK629 UT WOS:A1995TK62900005 PM 8748423 ER PT J AU Kinkead, ER Wolfe, RE Flemming, CD Leahy, HF Caldwell, DJ Miller, CR Marit, GB AF Kinkead, ER Wolfe, RE Flemming, CD Leahy, HF Caldwell, DJ Miller, CR Marit, GB TI Reproductive toxicity screen of ammonium dinitramide administered in the drinking water of Sprague-Dawley rats SO TOXICOLOGY AND INDUSTRIAL HEALTH LA English DT Article DE ammonium dinitramide; explosives; methemoglobinemia; nitrate; reproductive screen ID 1,3-DINITROBENZENE; TRINITROTOLUENE AB The Department of Defense is currently considering replacing ammonium perchlorate with ammonium dinitramide (ADN), a class 1.1 explosive oxidizer to be used in solid rocket propellant mixtures and explosives. This study was intended to evaluate the potential of ADN to produce alterations in paternal fertility, maternal pregnancy and lactation, and growth and development of offspring. Male and female rats received drinking water containing 0.0, 0.2, 1.0, or 2.0 g ADN/liter throughout the study. Mating occurred following 14 days of treatment. All darns, one-half the males, and representative pups were maintained for a total of 90 days of treatment. No mortality occurred in parental animals during the study. Treatment with ADN resulted in no adverse effects on mating; 92-100% of the animals mated No treatment-related effects were seen in parental animals clinically or histopathologically. Adverse treatment-related effects were noted in maternal and paternal fertility indices, gestational indices, and live birth indices in both the mid- and high-dose groups. Litter sizes in the mid- and high-dose groups were significantly smaller than those of the low-dose and control groups. Mean pup weights showed no statistically significant differences between ADN-treated pups and controls. Gross and histopathological examination of the animals failed to identify the cause for the decrease in litter production in the mid- and high-dose dams. This study indicates that ADN is a reproductive toxicant. The no-observable-effect level (NOEL) is 29 mg/kg/day, the median dose of the low-level female rats. C1 USA,WALTER REED ARMY INST RES,MED RES DETACHMENT,WRIGHT PATTERSON AFB,OH. ARMSTRONG LAB,DIV TOXICOL,OCCUPAT & ENVIRONM HLTH DIRECTORATE,WRIGHT PATTERSON AFB,OH. RP Kinkead, ER (reprint author), MANTECH ENVIRONM TECHNOL INC,POB 31009,DAYTON,OH 45437, USA. NR 21 TC 3 Z9 3 U1 0 U2 2 PU PRINCETON SCIENTIFIC PUBL INC PI PRINCETON PA PO BOX 2155, PRINCETON, NJ 08543 SN 0748-2337 J9 TOXICOL IND HEALTH JI Toxicol. Ind. Health PD JUL-AUG PY 1995 VL 11 IS 4 BP 437 EP 448 PG 12 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA TK629 UT WOS:A1995TK62900006 PM 8748424 ER PT J AU GSCHWENDER, L SNYDER, CE FULTZ, GW HAHN, DA DEMERS, JR AF GSCHWENDER, L SNYDER, CE FULTZ, GW HAHN, DA DEMERS, JR TI CHARACTERIZATION OF MODEL PERFLUOROPOLYALKYLETHERS BY MINIATURIZED THERMAL OXIDATIVE TECHNIQUES .1. MODIFIED OXIDATION-CORROSION TEST SO TRIBOLOGY TRANSACTIONS LA English DT Article DE OXIDATION; GAS TURBINE OILS; LUBRICANT CONTAMINATION; ADVERSE ENVIRONMENTS TRIBOLOGY ID FLUIDS; PERFLUOROPOLYETHERS; LUBRICANTS AB The metal catalyzed thermal oxidative stability of commercially available and model perfluoropolyalkylether (PFPAE) fluids was investigated by oxidation corrosion tests. Using model PFPAE fluids, prepared via direct fluorination of hydrocarbon analogues, a wider variety of specific molecular structures were available for study than previously available from more conventional PFPAE chemistry synthesis procedures. Because of a limited supply of the model fluids, a miniaturized oxidation corrosion test, using only 6 ml of fluid, was devised. This test, conducted at constant temperatures, was compared to a similar test using 20 ml of fluid on the more abundant commercial fluids and then extended to the model fluids. Details of the miniaturized test procedure and apparatus are presented. Also presented are the chemical structure-thermal oxidative stability relationships of the fluids as derived from this study. The destabilizing effect of an -OCF2- group is confirmed and other more subtle effects are noted. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP GSCHWENDER, L (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 18 Z9 18 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD JUL PY 1995 VL 38 IS 3 BP 618 EP 626 DI 10.1080/10402009508983451 PG 9 WC Engineering, Mechanical SC Engineering GA RG463 UT WOS:A1995RG46300018 ER PT J AU SNYDER, CE GSCHWENDER, LJ SCOTT, OL AF SNYDER, CE GSCHWENDER, LJ SCOTT, OL TI CHARACTERIZATION OF MODEL PERFLUOROPOLYALKYLETHERS BY MINIATURIZED THERMAL OXIDATIVE TECHNIQUES .2. PRESSURE DIFFERENTIAL SCANNING CALORIMETRY SO TRIBOLOGY TRANSACTIONS LA English DT Article DE LUBRICANT CONTAMINATION; OXIDATION; GAS TURBINE OILS; ADVERSE ENVIRONMENTS TRIBOLOGY ID FLUIDS; LUBRICANTS AB Commercially available and model perfluoropolyalkylether (PFPAE) fluids were characterized by pressure differential scanning calorimetry (PDSC). Details of the PDSC method are described and the stabilities determined by PDSC are compared to those obtained from the constant temperature miniaturized oxidation corrosion test described in Part I of this paper (1). Chemical structure-thermal oxidative stability relationships of the fluids as derived from the PDSC method are discussed. The destabilizing effect of an -OCF2-group is confirmed and other more subtle effects are noted. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP SNYDER, CE (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 11 Z9 11 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD JUL PY 1995 VL 38 IS 3 BP 733 EP 737 DI 10.1080/10402009508983466 PG 5 WC Engineering, Mechanical SC Engineering GA RG463 UT WOS:A1995RG46300034 ER PT J AU WILD, JD GELMAN, ME MILLER, AJ CHANIN, ML HAUCHECORNE, A KECKHUT, P FARLEY, R DAO, PD MERIWETHER, JW GOBBI, GP CONGEDUTI, F ADRIANI, A MCDERMID, IS MCGEE, TJ FISHBEIN, EF AF WILD, JD GELMAN, ME MILLER, AJ CHANIN, ML HAUCHECORNE, A KECKHUT, P FARLEY, R DAO, PD MERIWETHER, JW GOBBI, GP CONGEDUTI, F ADRIANI, A MCDERMID, IS MCGEE, TJ FISHBEIN, EF TI COMPARISON OF STRATOSPHERIC TEMPERATURES FROM SEVERAL LIDARS, USING NATIONAL-METEOROLOGICAL-CENTER AND MICROWAVE LIMB SOUNDER DATA AS TRANSFER REFERENCES SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID MIDDLE ATMOSPHERE; RAYLEIGH LIDAR; RAMAN LIDAR AB Stratospheric temperatures derived from five different lidars are compared. Although the lidars are in five separate geographic locations, the evaluation is accomplished by comparing each of the sets of lidar data taken over the course of a year (1991-1992) with temperatures interpolated to each location from daily global temperature analyses from the National Meteorological Center (NMC). Average differences between the lidars and NMC temperatures vary for the different lidars by up to 6.7 K. Part of this large average temperature difference is shown to be due to the real temperature variation throughout the day, and the different times of observation of the NMC data and each of the lidar systems. Microwave limb sounder (MLS) data from the upper atmosphere research satellite are used to model the diurnal and semidiurnal variations in temperature for each lidar location, for each season. After adjusting for the temperature changes caused by variations in observation time, average temperature differences are reduced among four of the five lidars, compared with the NMC temperatures, but still vary by as much as 3.9 K at stratospheric altitudes between 30 and 45 km. Results of direct comparisons at two permanent lidar sites with a mobile lidar show that sometimes agreement within 1 to 2 K is achieved, but for other cases, larger average differences are seen. Since the precision of lidar temperatures has been estimated to be better than 1 K, further research is needed to reconcile this small expected error with the larger average differences deduced here using measurements made under operational conditions. C1 CNR, IST FIS ATMOSFERA, I-00044 FRASCATI, ITALY. CNRS, SERV AERON, F-91371 VERRIERES LE BUISSON, FRANCE. USAF, PHILLIPS LAB, GEOPHYS DIRECTORATE, BEDFORD, MA 01731 USA. CALTECH, JET PROP LAB, PASADENA, CA 91109 USA. JET PROP LAB, WRIGHTWOOD, CA 92397 USA. NASA, GODDARD SPACE FLIGHT CTR, ATMOSPHERES LAB, GREENBELT, MD 20771 USA. RES & DATA SYST CORP, GREENBELT, MD USA. RP WILD, JD (reprint author), NOAA, NATL WEATHER SERV, NATL METEOROL CTR, CTR CLIMATE ANAL, WASHINGTON, DC 20233 USA. RI Hauchecorne, Alain/A-8489-2013; McGee, Thomas/G-4951-2013 NR 25 TC 21 Z9 21 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-897X J9 J GEOPHYS RES-ATMOS JI J. Geophys. Res.-Atmos. PD JUN 20 PY 1995 VL 100 IS D6 BP 11105 EP 11111 DI 10.1029/95JD00631 PG 7 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA RF051 UT WOS:A1995RF05100004 ER PT J AU SUN, G FRIEDMAN, L SOREF, RA AF SUN, G FRIEDMAN, L SOREF, RA TI INTERSUBBAND LASING LIFETIMES OF SIGE/SI AND GAAS/ALGAAS MULTIPLE-QUANTUM-WELL STRUCTURES SO APPLIED PHYSICS LETTERS LA English DT Article ID SEMICONDUCTOR C1 USAF,ROME LAB,EROC,BEDFORD,MA 01731. RP SUN, G (reprint author), UNIV MASSACHUSETTS,ENGN PROGRAM,BOSTON,MA 02125, USA. NR 7 TC 37 Z9 37 U1 1 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3425 EP 3427 DI 10.1063/1.113375 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200010 ER PT J AU SCRIPSICK, MP LOLACONO, DN ROTTENBERG, J GOELLNER, SH HALLIBURTON, LE HOPKINS, FK AF SCRIPSICK, MP LOLACONO, DN ROTTENBERG, J GOELLNER, SH HALLIBURTON, LE HOPKINS, FK TI DEFECTS RESPONSIBLE FOR GRAY TRACKS IN FLUX-GROWN KTIOPO4 SO APPLIED PHYSICS LETTERS LA English DT Article ID ELECTRON-PARAMAGNETIC RESONANCE; LASER DAMAGE; CRYSTALS; FE-3+ C1 W VIRGINIA UNIV,DEPT PHYS,MORGANTOWN,WV 26506. USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP SCRIPSICK, MP (reprint author), CRYSTAL ASSOCIATES INC,WALDWICK,NJ 07463, USA. NR 12 TC 49 Z9 51 U1 2 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3428 EP 3430 DI 10.1063/1.113376 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200011 ER PT J AU REYNOLDS, DC LOOK, DC KASPI, R TALWAR, DN AF REYNOLDS, DC LOOK, DC KASPI, R TALWAR, DN TI PHONON REPLICAS IN THE PHOTOLUMINESCENCE EMISSION OF ALXGA1-XAS ALLOYS SO APPLIED PHYSICS LETTERS LA English DT Article C1 USAF,WRIGHT LABS,SOLID STATE ELECTR DIRECTORATE,ELRA,WRIGHT PATTERSON AFB,OH 45433. INDIANA UNIV PENN,DEPT PHYS,INDIANA,PA 15705. RP REYNOLDS, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD JUN 19 PY 1995 VL 66 IS 25 BP 3447 EP 3449 DI 10.1063/1.113383 PG 3 WC Physics, Applied SC Physics GA RD302 UT WOS:A1995RD30200018 ER PT J AU NORTON, MG BIGGERS, RR MAARTENSE, I AF NORTON, MG BIGGERS, RR MAARTENSE, I TI DEFECTS AND ANOMALOUS FILM GROWTH AT THE EDGE OF SINGLE-CRYSTAL SUBSTRATES SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article ID THIN-FILMS; YBA2CU3O7-DELTA C1 USAF,WRIGHT LAB,MLPO,WRIGHT PATTERSON AFB,OH 45433. RP NORTON, MG (reprint author), WASHINGTON STATE UNIV,DEPT MECH & MAT ENGN,PULLMAN,WA 99164, USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0261-8028 J9 J MATER SCI LETT JI J. Mater. Sci. Lett. PD JUN 15 PY 1995 VL 14 IS 12 BP 851 EP 854 DI 10.1007/BF00639304 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA RG754 UT WOS:A1995RG75400005 ER PT J AU DAY, PN WANG, ZQ PACHTER, R AF DAY, PN WANG, ZQ PACHTER, R TI AB-INITIO STUDY OF THE RING-OPENING REACTIONS OF PYRAN, NITROCHROMENE, AND SPIROPYRAN SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID INTRINSIC REACTION COORDINATE; REACTION-FIELD METHOD; REACTION PATHS; ELECTRONIC-STRUCTURE; SOLVENT; ALGORITHMS; MOLECULES; 2H-PYRAN AB Quantum chemistry calculations have been used to study the conversion of spiropyran to merocyanine, both explicitly and with the model compounds pyran and nitrochromene. The minimum energy reaction path for the ring-opening reaction of pyran to form 2,4-pentadienal has been evaluated with Hartree-Fock calculations using the 3-21G and 6-31G(d) basis sets, as well as with semiempirical calculations. The reaction was found to follow a two-step mechanism, where first a conformer of the cis-2,4-pentadienal is formed, particularly a hydrogen-bonded seven-membered ring, and thereafter a rotation about a single bond to form one of the open-ring conformers of cis-2,4-pentadienal is indicated. Step one in this mechanism is the rate-limiting step, with a barrier of 33 kcal/mol at the Hartree-Fock 6-31G(d) level, corrected to 22 kcal/mol with Moller-Plesset second-order perturbation theory. This barrier is significantly higher than that reported previously using semiempirical calculations, and the discrepancy between the two studies is discussed. The energies of reaction for the ring-opening of nitrochromene and spiropyran have also been calculated by ah initio methods, and the effects of microsolvation and bulk solvation have been investigated for these systems. Finite field calculations were carried out to evaluate the polarizabilities and first hyperpolarizabilities and the effects of solvation on these properties. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 29 TC 41 Z9 41 U1 2 U2 5 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 15 PY 1995 VL 99 IS 24 BP 9730 EP 9738 DI 10.1021/j100024a014 PG 9 WC Chemistry, Physical SC Chemistry GA RD471 UT WOS:A1995RD47100014 ER PT J AU TRULOVE, PC CARLIN, RT EATON, GR EATON, SS AF TRULOVE, PC CARLIN, RT EATON, GR EATON, SS TI DETERMINATION OF THE SINGLET-TRIPLET ENERGY SEPARATION FOR C-60(2-) IN DMSO BY ELECTRON-PARAMAGNETIC-RESONANCE SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY LA English DT Article ID JAHN-TELLER DISTORTION; BUCKMINSTERFULLERENE ANIONS; ABSORPTION-SPECTRA; APROTIC-SOLVENTS; CARBON-ATOMS; EPR; C60; SUPERCONDUCTIVITY; ELECTROREDUCTION; FULLERENES AB In situ near-IR (NIR) spectra for C-60(2-) generated electrochemically in DMSO (dimethyl sulfoxide) indicate 87 +/- 10% conversion to C-60(2-). In the EPR spectra at 106 K a single line with a 2-G peak-to-peak line width is superimposed on signals with splittings of 11 and 30 G, which is similar to spectra reported in the literature. The total intensity for all of the signals observed at 106 K is less than 4% of the total C-60, which is too small for the ground state of C-60(2-). The spin lattice relaxation time for the sharp signal is about 0.6 s at 4 K, which is too long to permit study by continuous wave EPR spectroscopy. The temperature dependence of the intensity of the FID and of the spin echo for the sharp signal between 4.5 and 50 K corresponds to that expected for a doublet or triplet ground state species and not that expected for a thermally-populated excited state. The microwave power required to achieve a 90 degrees pulse for the sharp signal is that characteristic of an S = 1/2 system. Thus, the sharp EPR signal in DMSO is due to an S = 1/2 species that is neither the ground state nor a thermally-accessible excited state of C-60(2-). The EPR data in DMSO are consistent with the conclusion reached previously for toluene:acetonitrile solutions, studied below 120 K, that the ground state of C-60(2-) is diamagnetic. Above 135 K, a Lorentzian signal with a 30-G peak-to-peak line width grows in with increasing temperature and at 255 K corresponds to 6 +/- 1% (calculated for S = 1) of the C-60(2-) concentration determined by NIR. The temperature independence of the line width and the increase in signal intensity with increasing temperature distinguish this signal from the broad signals observed for C-60(-) and C-60(3-) in DMSO in this temperature interval. This signal is assigned to a thermally-populated excited triplet state of C-60(2-) with a singlet-triplet splitting of 600 +/- 100 cm(-1). C1 UNIV DENVER, DEPT CHEM, DENVER, CO 80208 USA. USAF ACAD, FRANK J SEILER RES LAB, ACADEMY, CO 80840 USA. OI Eaton, Gareth R/0000-0001-7429-8469; Eaton, Sandra S/0000-0002-2731-7986 NR 49 TC 59 Z9 59 U1 0 U2 3 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 JUN 14 PY 1995 VL 117 IS 23 BP 6265 EP 6272 DI 10.1021/ja00128a014 PG 8 WC Chemistry, Multidisciplinary SC Chemistry GA RD284 UT WOS:A1995RD28400014 ER PT J AU LAUDERDALE, WJ COOLIDGE, MB AF LAUDERDALE, WJ COOLIDGE, MB TI BASIS-SET EFFECTS ON THE NONLINEAR-OPTICAL PROPERTIES OF SELECTED LINEAR DIACETYLENES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SEMIEMPIRICAL CALCULATIONS; DISPERSION FORMULAS; ORGANIC-MOLECULES; HARTREE-FOCK; HYPERPOLARIZABILITY; POLARIZABILITIES; DERIVATIVES; HYDROGEN; FLUORIDE AB Calculations of the nonlinear optical properties (hyperpolarizabilities beta and gamma) of a series of substituted linear diacetylenes have been performed using time-dependent Hartree-Fock (TDHF) theory. Several different basis sets of increasingly improved quality have been used with an incident optical frequency corresponding to the Nd:YAG laser fundamental (1064 nm). In addition, the frequency dependence of both beta and gamma has been studied for all molecules using a modest basis set. Our results yield a previously unreported Linear correlation between the frequency-dependent and static values of the hyperpolarizabilities for a variety of nonlinear optical processes. This dispersion correction appears to be relatively insensitive to basis set. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. NR 24 TC 13 Z9 13 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 8 PY 1995 VL 99 IS 23 BP 9368 EP 9373 DI 10.1021/j100023a011 PG 6 WC Chemistry, Physical SC Chemistry GA RC459 UT WOS:A1995RC45900011 ER PT J AU Harmon, ME Baird, LC Klopf, AH AF Harmon, ME Baird, LC Klopf, AH TI Reinforcement learning applied to a differential came SO ADAPTIVE BEHAVIOR LA English DT Article DE reinforcement learning; advantage updating; dynamic programming; differential games AB An application of reinforcement learning to a linear-quadratic, differential game is presented The reinforcement learning system uses a recently developed algorithm, She residual-gradient form of advantage updating The game is a Markov decision process with continuous time, states, and actions, linear dynamics, and a quadratic cost function. The game consists of two players, a missile and a plane; the missile pursues the plane and the plane evades the missile. Although a missile and plane scenario was the chosen test bed, the reinforcement learning approach presented here is equally applicable to biologically based systems, such as a predator pursuing prey. The reinforcement learning algorithm for optimal control is modified for differential games to find the minimax point rather than the maximum. Simulation results are compared to the analytical solution, demonstrating that the simulated reinforcement learning system converges to the optimal answer. The performance of both the residual-gradient and non-residual-gradient forms of advantage updating and Q-learning are compared, demonstrating that advantage updating converges faster than Q-learning in all simulations. Advantage updating also is demonstrated to converge regardless of the time step duration; Q-learning is unable to converge as the time step duration grows small. C1 USAF ACAD,COLORADO SPRINGS,CO 80840. RP Harmon, ME (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 13 Z9 13 U1 1 U2 3 PU MIT PRESS PI CAMBRIDGE PA 55 HAYWARD ST JOURNALS DEPT, CAMBRIDGE, MA 02142 SN 1059-7123 J9 ADAPT BEHAV JI Adapt. Behav. PD SUM PY 1995 VL 4 IS 1 BP 3 EP 28 DI 10.1177/105971239500400102 PG 26 WC Computer Science, Artificial Intelligence; Psychology, Experimental; Social Sciences, Interdisciplinary SC Computer Science; Psychology; Social Sciences - Other Topics GA TW200 UT WOS:A1995TW20000002 ER PT J AU LELAND, JE PRICE, DC HILL, BP COLLICOTT, HE AF LELAND, JE PRICE, DC HILL, BP COLLICOTT, HE TI COOLING DOWN HOT NEW ELECTRONICS SO AEROSPACE AMERICA LA English DT Article RP LELAND, JE (reprint author), WRIGHT LAB,THERMAL TECHNOL SECT,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH, USA. NR 0 TC 6 Z9 6 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0740-722X J9 AEROSPACE AM JI Aerosp. Am. PD JUN PY 1995 VL 33 IS 6 BP 40 EP 44 PG 5 WC Engineering, Aerospace SC Engineering GA RC481 UT WOS:A1995RC48100012 ER PT J AU DOWNS, JR GOTTO, A CLEARFIELD, M GORDON, D MANOLIO, T GOLDBOURT, U KAPLINSKY, E MOYE, L SACKS, F PFEFFER, M HAWKINS, CM BRAUNWALD, E FRANZOSI, MG MAGGIONI, A TOGNONI, G ROBINS, S RUBINS, H SIMES, J KEECH, A MACMAHON, S TONKIN, A YUSUF, S FLATHER, M COLLINS, R KEECH, A ARMITAGE, J BAIGENT, C PETO, R SLEIGHT, P KNATTERUD, G KJEKSHUS, J PEDERSEN, T WILHELMSEN, L ROUSSOUW, J PROBSTFIELD, J COBBE, S MACFARLANE, P SHEPHERD, J AF DOWNS, JR GOTTO, A CLEARFIELD, M GORDON, D MANOLIO, T GOLDBOURT, U KAPLINSKY, E MOYE, L SACKS, F PFEFFER, M HAWKINS, CM BRAUNWALD, E FRANZOSI, MG MAGGIONI, A TOGNONI, G ROBINS, S RUBINS, H SIMES, J KEECH, A MACMAHON, S TONKIN, A YUSUF, S FLATHER, M COLLINS, R KEECH, A ARMITAGE, J BAIGENT, C PETO, R SLEIGHT, P KNATTERUD, G KJEKSHUS, J PEDERSEN, T WILHELMSEN, L ROUSSOUW, J PROBSTFIELD, J COBBE, S MACFARLANE, P SHEPHERD, J TI PROTOCOL FOR A PROSPECTIVE COLLABORATIVE OVERVIEW OF ALL CURRENT AND PLANNED RANDOMIZED TRIALS OF CHOLESTEROL TREATMENT REGIMENS SO AMERICAN JOURNAL OF CARDIOLOGY LA English DT Article ID PUBLICATION BIAS; TOTAL MORTALITY; RISK-FACTORS; HYPERCHOLESTEROLEMIA; LIPOPROTEINS; DISEASE; COHORT; NEED; MEN AB The Cholesterol Treatment Trialists' Collaboration aims to provide reliable information about the effects on mortality and morbidity of treatments that modify blood lipid levels for a wide range of patient populations and risk groups. This protocol prospectively defines study eligibility, the main questions to be addressed, and statistical methods to be used. Additionally, by establishing a register of ongoing and planned trials prior to any trial results being known, this systematic overview attempts to avoid the methodologic problems and potential data-dependency of a retrospective project. The collaboration expects to have individual patient data on >60,000 subjects by the year 2000, including 12,000 women and 20,000 elderly subjects, and should have good power to examine any effects on non-coronary artery disease events. Overall, there should be about 1,900 non-coronary artery disease deaths and >2,000 total cancer events. C1 UNIV SYDNEY,NHMRC,CTR CLIN TRIALS,SYDNEY,NSW 2006,AUSTRALIA. USAF,TEXAS CORONARY ATHEROSCLEROSIS PREVENT STUDY,SAN ANTONIO,TX. GRP ITALIANO STUDIO SOPRAVVIVENZA INFARTO MIOCARD,MILAN,ITALY. VET ADM LOW HDL INTERVENT TRIAL,WASHINGTON,DC. MCMASTER UNIV,HAMILTON,ON,CANADA. MRC,BRITISH HEART FDN,HEART PROTECT STUDY,LONDON W1N 4AL,ENGLAND. RP DOWNS, JR (reprint author), RADCLIFFE INFIRM,MRC,IMPERIAL CANC RES FUND,BHF,CLIN TRIAL SERV,OXFORD OX2 6HE,ENGLAND. RI Simes, Robert/P-1497-2014 NR 28 TC 60 Z9 60 U1 0 U2 1 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9149 J9 AM J CARDIOL JI Am. J. Cardiol. PD JUN 1 PY 1995 VL 75 IS 16 BP 1130 EP 1134 PG 5 WC Cardiac & Cardiovascular Systems SC Cardiovascular System & Cardiology GA RA608 UT WOS:A1995RA60800011 ER PT J AU IMBERY, TA HILTON, TJ REAGAN, SE AF IMBERY, TA HILTON, TJ REAGAN, SE TI RETENTION OF COMPLEX AMALGAM RESTORATIONS USING SELF-THREADING PINS, AMALGAPINS, AND AMALGAMBOND SO AMERICAN JOURNAL OF DENTISTRY LA English DT Article ID RETAINED RESTORATIONS; TRANSVERSE STRENGTH; DENTAL MATERIALS; BIOCOMPATIBILITY; RESISTANCE AB Purpose: To compare the shear fracture resistance of complex amalgam restorations retained by four regular TMS pins, four amalgapins, Amalgambond, or four amalgapins in conjunction with Amalgambond. Materials and Methods: Sixty maxillary molars free of caries were mounted in acrylic resin and the occlusal surfaces were ground flat to within 2 mm of the CEJ. The specimens were randomly divided into four groups of 15 teeth. Each group provided one of the four different methods of resistance. Dispersalloy was condensed into the prepared specimens. The specimens were adjusted to provide 4 mm height of amalgam. After 1000 thermocycles, the specimens were loaded at a 45 degrees angle to the occlusal surface at a crosshead speed of 1 mm/second. Results: Statistical analysis revealed that Amalgambond, four amalgapins, and four amalgapins in conjunction with Amalgambond provided more resistance to shear force than four regular TMS pins. C1 WILFORD HALL USAF MED CTR,DSG,LACKLAND AFB,TX 78236. NR 47 TC 9 Z9 10 U1 0 U2 1 PU MOSHER & LINDER, INC PI SAN ANTONIO PA 9859 IH-10 WEST, SUITE 107/489, SAN ANTONIO, TX 78230-2236 SN 0894-8275 J9 AM J DENT JI Am. J. Dent. PD JUN PY 1995 VL 8 IS 3 BP 117 EP 121 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RA093 UT WOS:A1995RA09300001 PM 8599585 ER PT J AU LOWELL, JA SHIKORA, SA BOTHE, A AF LOWELL, JA SHIKORA, SA BOTHE, A TI A TECHNIQUE FOR THE EXCHANGE OF TUNNELED POLYMERIC SILICONE CATHETERS AND IMPLANTABLE INFUSION PORTS SO AMERICAN JOURNAL OF SURGERY LA English DT Note ID CENTRAL VENOUS CATHETERS; HICKMAN CATHETER; ACCESS CATHETERS; ATRIAL CATHETER; COMPLICATIONS; SYSTEM; EXPERIENCE; NUTRITION AB Tunneled polymeric silicone catheters and implantable infusion ports are used with increasing frequency. Complications may occur with catheter placement or ongoing use. A new technique is described that minimizes the risks associated with catheter reinsertion in patients with tunneled polymeric silicone catheters that are either malfunctioning or mispositioned. This procedure allows for the exchange of these catheters without incurring the risk of a new venipuncture. C1 WILFORD HALL USAF MED CTR,DEPT SURG,SAN ANTONIO,TX 78236. HARVARD UNIV,NEW ENGLAND DEACONESS HOSP,SCH MED,NUTR SUPPORT SERV,BOSTON,MA 02215. RP LOWELL, JA (reprint author), WASHINGTON UNIV,SCH MED,DEPT SURG,DIV TRANSPLANTAT,1 BARNES HOSP PLAZA,SUITE 4105,QUEENY TOWER,ST LOUIS,MO 63110, USA. NR 19 TC 3 Z9 3 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9610 J9 AM J SURG JI Am. J. Surg. PD JUN PY 1995 VL 169 IS 6 BP 631 EP 633 DI 10.1016/S0002-9610(99)80237-2 PG 3 WC Surgery SC Surgery GA RB025 UT WOS:A1995RB02500019 PM 7771632 ER PT J AU YBLOOD AF YBLOOD TI CROSSING THE LINE - KERNAN,A SO AMERICAN NEPTUNE LA English DT Book Review RP YBLOOD (reprint author), AIR FORCE HIST SUPPORT OFF,BOLLING AFB,WASHINGTON,DC, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PEABODY MUSEUM PI SALEM PA E INDIA MARINE HALL, SALEM, MA 01970 SN 0003-0155 J9 AM NEPTUNE JI Am. Neptune PD SUM PY 1995 VL 55 IS 3 BP 266 EP 267 PG 2 WC History SC History GA RY426 UT WOS:A1995RY42600011 ER PT J AU FORTENBERRY, JE LAINE, J SHALIT, M AF FORTENBERRY, JE LAINE, J SHALIT, M TI USE OF EPINEPHRINE FOR ANAPHYLAXIS BY EMERGENCY MEDICAL TECHNICIANS IN A WILDERNESS SETTING SO ANNALS OF EMERGENCY MEDICINE LA English DT Article AB Study objective: To describe a case series of emergency medical technician-basic (EMT-B)-administered epinephrine for anaphylaxis in a wilderness setting. Design: Case series of patients in anaphylaxis who received epinephrine subcutaneously from EMT-Bs. Setting: National park rural/wilderness emergency medical service system covering 863,000 acres and serving approximately 2 million annual visitors. Participants: Prehospital care providers were National Park Service rangers with EMT-B training. Patients in the series were visitors to Sequoia and Kings Canyon National Parks with anaphylaxis resulting from insect stings. Intervention: Subcutaneous administration of epinephrine by EMT-Bs trained in recognition, understanding, and treatment of anaphylaxis. Results: Eight patients with anaphylaxis resulting from Hymenoptera stings, from June 1992 through September 1993, received EMT-B-administered epinephrine. All patients improved clinically after treatment with epinephrine within 25 minutes. No major side effects occurred. Conclusion: Our data suggest that EMT-B-administered epinephrine is safe when used by EMT-Bs in the rural/wilderness setting, with appropriate physician supervision. Further study in large trials will be required to demonstrate safety and efficacy. RP FORTENBERRY, JE (reprint author), SGOEE,MED GRP 81,301 FISHER ST,SUITE 109,KEESLER AFB,MS 39534, USA. NR 0 TC 14 Z9 14 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD JUN PY 1995 VL 25 IS 6 BP 785 EP 787 DI 10.1016/S0196-0644(95)70208-3 PG 3 WC Emergency Medicine SC Emergency Medicine GA RA349 UT WOS:A1995RA34900010 PM 7755201 ER PT J AU CREEL, GB HURTT, M AF CREEL, GB HURTT, M TI CEPHALOSPORIN-INDUCED RECURRENT ASEPTIC-MENINGITIS SO ANNALS OF NEUROLOGY LA English DT Note ID IGG SYNTHESIS; DIAGNOSIS AB A 66-year-old woman had several episodes of aseptic meningitis associated with exposure to cephalexin, cefazolin, and ceftazidime. The cerebrospinal fluid IgG index was elevated, specific IgG-ceftazidime binding was shown, and skin allergy testing with cefazolin provoked a recurrence of meningitis. We postulate an acute hypersensitivity reaction involving an antigen-specific humoral immune response. RP CREEL, GB (reprint author), USAF,DEPT NEUROL,74 MED GRP,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 20 Z9 20 U1 0 U2 0 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 0364-5134 J9 ANN NEUROL JI Ann. Neurol. PD JUN PY 1995 VL 37 IS 6 BP 815 EP 817 DI 10.1002/ana.410370617 PG 3 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA RD040 UT WOS:A1995RD04000016 PM 7778857 ER PT J AU NISHINO, SF SPAIN, JC AF NISHINO, SF SPAIN, JC TI OXIDATIVE PATHWAY FOR THE BIODEGRADATION OF NITROBENZENE BY COMAMONAS SP STRAIN JS765 SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Article ID META-CLEAVAGE PATHWAY; PSEUDOMONAS SP; ORTHO-NITROPHENOL; DEGRADATION; CATABOLISM; CATECHOL; 4-NITROTOLUENE; METABOLISM; BACTERIA; PUTIDA AB Previous studies have shown that the biodegradation of nitrobenzene by Pseudomonas pseudoalcaligenes JS45 proceeds by the reduction of nitrobenzene through nitrosobenzene and hydroxylaminobenzene, followed by rearrangement to 2-aminophenol, which then undergoes meta ring cleavage, We report here the isolation of a Comamonas sp. that uses an oxidative pathway for the complete mineralization of nitrobenzene. The isolate, designated strain JS765, uses nitrobenzene as a sole source of carbon, nitrogen, and energy, Nitrobenzene-grown cells oxidized nitrobenzene, with the stoichiometric release of nitrite, Extracts of nitrobenzene-grown JS765 showed high levels of catechol 2,3-dioxygenase activity that were not abolished by heating the cell extracts to 60 degrees C for 10 min, The ring cleavage product had an absorbance maximum at 375 nm, consistent, with that of 2-hydroxymuconic semialdehyde. Both NAD-dependent dehydrogenase and NAD-independent hydrolase activities towards 2-hydroxymuconic semialdehyde were induced in extracts of nitrobenzene-grown cells. Catechol accumulated in the reaction mixture when cells preincubated with 3-chlorocatechol were incubated with nitrobenzene. Conversion of nitrobenzene to catechol by induced cells in the presence of 3-chlorocatechol and O-18(2), demonstrated the simultaneous incorporation of two atoms of oxygen, which indicated that the initial reaction was dioxygenation. The results indicate that the catabolic pathway involves an initial dioxygenase attack on nitrobenzene with the release of nitrite and formation of catechol, which is subsequently degraded by a meta cleavage pathway. C1 AL, EQC, TYNDALL AFB, FL 32403 USA. NR 36 TC 106 Z9 129 U1 0 U2 13 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0099-2240 EI 1098-5336 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD JUN PY 1995 VL 61 IS 6 BP 2308 EP 2313 PG 6 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA RA621 UT WOS:A1995RA62100037 PM 16535050 ER PT J AU WOODS, SL SMITH, MH AF WOODS, SL SMITH, MH TI REGIOSPECIFICITY OF CHLOROPHENOL REDUCTIVE DECHLORINATION BY VITAMIN-B-12S - REPLY SO APPLIED AND ENVIRONMENTAL MICROBIOLOGY LA English DT Letter C1 ARMSTRONG LAB,EQW,TYNDALL AFB,FL 32403. RP WOODS, SL (reprint author), OREGON STATE UNIV,DEPT CIVIL ENGN,CORVALLIS,OR 97331, USA. RI Dolfing, Jan/B-8641-2015 OI Dolfing, Jan/0000-0002-7220-530X NR 3 TC 2 Z9 2 U1 0 U2 0 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1325 MASSACHUSETTS AVENUE, NW, WASHINGTON, DC 20005-4171 SN 0099-2240 J9 APPL ENVIRON MICROB JI Appl. Environ. Microbiol. PD JUN PY 1995 VL 61 IS 6 BP 2450 EP 2451 PG 2 WC Biotechnology & Applied Microbiology; Microbiology SC Biotechnology & Applied Microbiology; Microbiology GA RA621 UT WOS:A1995RA62100064 ER PT J AU GVISHI, R HE, GS PRASAD, PN NARANG, U LI, M BRIGHT, FV REINHARDT, BA BHATT, JC DILLARD, AG AF GVISHI, R HE, GS PRASAD, PN NARANG, U LI, M BRIGHT, FV REINHARDT, BA BHATT, JC DILLARD, AG TI SPECTROSCOPIC STUDIES OF NEW BLUE LASER-DYES IN TETRAHYDROFURAN SOLUTION AND IN COMPOSITE GLASS SO APPLIED SPECTROSCOPY LA English DT Article DE SOL-GEL; PMMA COMPOSITE GLASS; FLUORESCENCE; LASER DYES; AGGREGATION ID SOL-GEL FILMS; RHODAMINE-6G; OXAZINE-170; ABSORPTION; SILICA AB We have investigated the linear absorption, emission wavelength-dependent excitation, fluorescence polarization excitation, and lasing prop properties of new UV-blue dyes. The dyes are didecyl para-polyphenyl hep tamer (DDPPH), didecyloxy para-polyphenyl heptamer (DDOPPH), and bisbenzothiazole 3,4- didecyloxy thiophene (BBTDOT), We studied the effect of dye concentration on absorption and emission and the origin of the peaks in tetrahydrofuran solution and in a composite glass, We show that, in a composite glass, it is possible to impregnate the dye with density of several orders without aggregation effects, The two heptamer dyes were found to be very photostable, All three dyes are promising candidates as laser dyes in the UV, Under excitation with a frequency-doubled dye laser (300 nm), the DDPPH lased at 377 nm. The DDOPPH lased at 425 nm and the BBTDOT lased at similar to 450 nm when excited by the third harmonic of a Nd:YAG laser (355 nm), The output from the second heptamer in tetrahydrofuran was photostable (less than 10% decrease) for more than 900,000 pulses and with a slope efficiency of approximately 20%. C1 SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14260. USAF,WRIGHT LAB,POLYMER BRANCH,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. SYSTRAN CORP,DAYTON,OH 45432. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 24 TC 13 Z9 16 U1 0 U2 0 PU SOC APPLIED SPECTROSCOPY PI FREDERICK PA PO BOX 1438, FREDERICK, MD 21701 SN 0003-7028 J9 APPL SPECTROSC JI Appl. Spectrosc. PD JUN PY 1995 VL 49 IS 6 BP 834 EP 839 DI 10.1366/0003702953964552 PG 6 WC Instruments & Instrumentation; Spectroscopy SC Instruments & Instrumentation; Spectroscopy GA RG354 UT WOS:A1995RG35400019 ER PT J AU CARPENTER, MT ENZENAUER, R KIRK, JM DESROSIER, KF AF CARPENTER, MT ENZENAUER, R KIRK, JM DESROSIER, KF TI SEXUAL AND PHYSICAL ABUSE IN FEMALE-PATIENTS WITH FIBROMYALGIA SO ARTHRITIS AND RHEUMATISM LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. FITZSIMONS AMC,AURORA,CO. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD JUN PY 1995 VL 38 IS 6 SU S BP R13 EP R13 PG 1 WC Rheumatology SC Rheumatology GA RD908 UT WOS:A1995RD90800035 ER PT J AU GRADY, EP CARPENTER, MT BATTAFARANO, DF OLDER, SA AF GRADY, EP CARPENTER, MT BATTAFARANO, DF OLDER, SA TI RHEUMATOLOGIC FINDINGS IN PERSIAN-GULF-WAR VETERANS SO ARTHRITIS AND RHEUMATISM LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. BROOKE ARMY MED CTR,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD JUN PY 1995 VL 38 IS 6 SU S BP R17 EP R17 PG 1 WC Rheumatology SC Rheumatology GA RD908 UT WOS:A1995RD90800056 ER PT J AU ROANE, DW CARPENTER, MT FINGER, DR ALLOWAY, JA ERICKSON, AR AF ROANE, DW CARPENTER, MT FINGER, DR ALLOWAY, JA ERICKSON, AR TI THE USE OF INTRAMUSCULAR TRIAMCINOLONE ACETONIDE IN PSEUDOGOUT SO ARTHRITIS AND RHEUMATISM LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. WILLIAM BEAUMONT ARMY MED CTR,EL PASO,TX 79920. MALCOLM GROW MED CTR,WASHINGTON,DC. FITZSIMONS ARMY MED CTR,AURORA,CO 80045. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0004-3591 J9 ARTHRITIS RHEUM JI Arthritis Rheum. PD JUN PY 1995 VL 38 IS 6 SU S BP R16 EP R16 PG 1 WC Rheumatology SC Rheumatology GA RD908 UT WOS:A1995RD90800050 ER PT J AU WALTERS, TJ MASON, PA SHERRY, CJ STEFFEN, C MERRITT, JH AF WALTERS, TJ MASON, PA SHERRY, CJ STEFFEN, C MERRITT, JH TI NO DETECTABLE BIOEFFECTS FOLLOWING ACUTE EXPOSURE TO HIGH PEAK POWER ULTRA-WIDE-BAND ELECTROMAGNETIC-RADIATION IN RATS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID C-FOS PROTEIN AB A wide range assessment of the possible bioeffects of an acute exposure to high peak power ultra-wide band (UWB) electromagnetic radiation was performed in rats. The UWB-exposure consisted of 2 min of pulsed (frequency: 60 Hz, pulse width: 5-10 ns) UWB (bandwidth: 0.25-2.50 GHz) electromagnetic radiation. Rats were examined using one of the following: 1) a functional observational battery (FOE); 2) a swimming performance test; 3) a complete panel of blood chemistries; or 4) determination of the expression of the c-fos protein in immunohistologically-stained sections of the brain. No significant differences were found between UWB- or sham-exposed rats on any of the measured parameters. C1 SYST RES LABS INC,BROOKS AFB,TX 78235. OPERAT TECHNOL CORP,BROOKS AFB,TX 78235. ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV RADIOFREQUENCY RADIAT,BROOKS AFB,TX 78235. NR 13 TC 32 Z9 33 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1995 VL 66 IS 6 BP 562 EP 567 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RB018 UT WOS:A1995RB01800008 PM 7646407 ER PT J AU FERRER, CF BISSON, RU FRENCH, J AF FERRER, CF BISSON, RU FRENCH, J TI CIRCADIAN-RHYTHM DESYNCHRONOSIS IN MILITARY DEPLOYMENTS - A REVIEW OF CURRENT STRATEGIES SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID PHASE RESPONSE CURVE; PERFORMANCE; MELATONIN; DISEASE; HEALTH; LIGHT; SLEEP AB The combined problems of changing work schedules and work places are not uncommon in military operations, For example, during the Persian Gulf War, many military units underwent short notice transmeridian deployment with immediate commencement of 24-h operations upon arrival, Some of these individuals likely suffered from circadian desynchronosis, blunting their effectiveness, The United States Air Force approved limited use of one short acting hypnotic medication to assist aircrew sleep disorders in the operational theater and, until recently, one stimulant medication to enhance alertness, Multiple theoretical strategies for circadian rhythm management are available, However, many U.S. Air Force flight surgeons are not trained on how best to use medications in combination with other circadian rhythm strategies, We present a condensed review of current human circadian rhythm coping strategies pertinent to military operations, C1 ARMSTRONG LAB,BROOKS AFB,TX. RP FERRER, CF (reprint author), USAF,SCH AEROSP MED,2513 KENNEDY CIRCLE,BROOKS AFB,TX 78235, USA. NR 31 TC 16 Z9 18 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1995 VL 66 IS 6 BP 571 EP 578 PG 8 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RB018 UT WOS:A1995RB01800010 PM 7646409 ER PT J AU MERRITT, JH KIEL, JL HURT, WD AF MERRITT, JH KIEL, JL HURT, WD TI CONSIDERATIONS FOR HUMAN EXPOSURE STANDARDS FOR FAST-RISE-TIME HIGH-PEAK-POWER ELECTROMAGNETIC PULSES SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note ID DNA AB Development of new emitter systems capable of producing high-peak-power electromagnetic pulses with very fast rise times and narrow pulse widths is continuing. Such directed energy weapons systems will be used in the future to defeat electronically vulnerable targets. Human exposures to these pulses can be expected during testing and operations. Development of these technologies for radar and communications purposes has the potential for wider environmental exposure, as well. Current IEEE C95.1-1991 human exposure guidelines do not specifically address these types of pulses, though limits are stated for pulsed emissions. The process for developing standards includes an evaluation of the relevant bioeffects data base. A recommendation has been made that human exposure to ultrashort electromagnetic pulses that engender electromagnetic transients, called precursor waves, should be avoided. Studies that purport to show the potential for tissue damage induced by such pulses were described. The studies cited in support of the recommendation were not relevant to the issues of tissue damage by propagated pulses. A number of investigations are cited in this review that directly address the biological effects of electromagnetic pulses. These studies have not shown evidence of tissue damage as a result of exposure to high-peak-power pulsed microwaves. It is our opinion that the current guidelines are sufficiently protective for human exposure to these pulses. RP MERRITT, JH (reprint author), ARMSTRONG LAB,DIV RADIOFREQUENCY RADIAT,8308 HAWKS RD,BROOKS AFB,TX 78235, USA. NR 22 TC 36 Z9 41 U1 1 U2 6 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD JUN PY 1995 VL 66 IS 6 BP 586 EP 589 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RB018 UT WOS:A1995RB01800012 PM 7646411 ER PT J AU GATTOMENKING, DL YU, H BRUNO, JG GOODE, MT MILLER, M ZULICH, AW AF GATTOMENKING, DL YU, H BRUNO, JG GOODE, MT MILLER, M ZULICH, AW TI SENSITIVE DETECTION OF BIOTOXOIDS AND BACTERIAL-SPORES USING AN IMMUNOMAGNETIC ELECTROCHEMILUMINESCENCE SENSOR SO BIOSENSORS & BIOELECTRONICS LA English DT Article DE BACTERIAL SPORES; BIOTOXINS; ELECTROCHEMILUMINESCENCE; IMMUNOMAGNETICS; MAGNETIC BEADS ID MAGNETIC SEPARATION; ESCHERICHIA-COLI; CELL-SEPARATION; BEADS; ANTIGEN; IMMUNOASSAYS; PARTICLES; KINETICS; INVITRO; ASSAYS AB Extremely sensitive detection of various biotoxoids and bacterial spores using the commercial ORIGEN(R) analyzer was achieved by capture on antibody-conjugated micron sized magnetic beads (MBs) followed by binding of ruthenium (II) trisbipyridal chelate (Ru(bpy)(3)(2+))-labelled reporter antibodies. Immunomagnetically captured target materials were collected on a magnet. Electrochemiluminescence (ECL) was evoked from the Ru(bpy)(3)(2+)-tagged reporter antibodies by application of an electrical potential. Femtogram sensitivity levels were obtained for all biotoxoids tested including botulinus A, cholera beta subunit. ricin and staphylococcal enterotoxoid B by this immunomagnetic (IM)-ECL approach. An IM-ECL assay for Bacillus anthracis spores yielded a detection limit of at least 100 spores. The ECL signal was a function of analyte quantity over several orders of magnitude, but the immunological 'hook' effect at high antigen loads made quantitation impossible over a broader range. All assays were performed with a maximum combined incubation and assay time of approximately 40 min. This work demonstrates the extreme sensitivity of the IM-ECL approach for soluble and particulate antigens. C1 SCI & TECHNOL CORP, EDGEWOOD, MD 21040 USA. OPERAT TECHNOL CORP, SAN ANTONIO, TX 78229 USA. USA, USAF,EDGEWOOD RES DEV & ENGN CTR, CREW SYST DIRECTORATE,ARMSTRONG LAB, ABERDEEN PROVING GROUND, MD 21010 USA. NR 32 TC 108 Z9 115 U1 1 U2 12 PU ELSEVIER ADVANCED TECHNOLOGY PI OXFORD PA OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0956-5663 EI 1873-4235 J9 BIOSENS BIOELECTRON JI Biosens. Bioelectron. PD SUM PY 1995 VL 10 IS 6-7 BP 501 EP 507 DI 10.1016/0956-5663(95)96925-O PG 7 WC Biophysics; Biotechnology & Applied Microbiology; Chemistry, Analytical; Electrochemistry; Nanoscience & Nanotechnology SC Biophysics; Biotechnology & Applied Microbiology; Chemistry; Electrochemistry; Science & Technology - Other Topics GA RH052 UT WOS:A1995RH05200001 PM 7612203 ER PT J AU DAINTY, AM SCHULTZ, CA AF DAINTY, AM SCHULTZ, CA TI CRUSTAL REFLECTIONS AND THE NATURE OF REGIONAL P-CODA SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article ID ARRAY; SCATTERING; WAVES; 3-COMPONENT; LOCATION AB F-K spectra for regional P coda are presented for events recorded at the Scandinavian NORESS, FINESA, and ARCESS arrays and the New England NYNEX array. The spectra are dominated by on-azimuth energy with apparent velocities between Pn (or faster) and Lg. Following this analysis, reflection coefficients calculated with an efficient boundary integral scheme are used to study the role irregular interfaces play in the creation of regional P coda. We find that observed crustal scattering in these regions is strikingly consistent with P-P and P-SV scattering from the two-dimensional (2D) irregular Moho and even more consistent with scattering from a 2D irregular near-surface interface. C1 MIT,DEPT EARTH ATMOSPHER & PLANETARY SCI,CAMBRIDGE,MA 02142. RP DAINTY, AM (reprint author), USAF,DIV EARTH SCI,BEDFORD,MA 01731, USA. NR 21 TC 17 Z9 17 U1 0 U2 0 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD JUN PY 1995 VL 85 IS 3 BP 851 EP 858 PG 8 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA RC529 UT WOS:A1995RC52900016 ER PT J AU HAWKS, MR JOHNSON, RO PERRAM, GP AF HAWKS, MR JOHNSON, RO PERRAM, GP TI INFRARED FLUORESCENCE STUDY OF ELECTRONIC-TO-VIBRATIONAL ENERGY-TRANSFER IN THE BR(P-2(1/2))-NO SYSTEM SO CHEMICAL PHYSICS LA English DT Article ID DEACTIVATION; HCN; LASERS; CO2; NO AB Steady-state laser photolysis techniques were used to study collisional energy transfer from spin-orbit excited atomic bromine to vibration in the ground electronic state of nitric oxide. Photodissociation of molecular bromine at lambda = 488 nm was used to produce Br(P-2(1/2)), and energy transfer was monitored by observing the infrared fluorescence from Br(P-2(1/2)) near lambda = 2.71 mu m and from NO(upsilon = 1, 2) near lambda = 5.3 mu m as a function of Br-2 and NO pressures. The rate coefficient for quenching of Br(P-2(1/2)) by NO was determined as 1.9 +/- 0.2 x 10(-12) cm(3)/molecule s. The product of this quenching process prefers NO(upsilon = 2), with a quantum yield of greater than 0.76. These results are discussed in connection with a recent Br(P-2(1/2))-NO laser demonstration. RP HAWKS, MR (reprint author), USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433, USA. OI Perram, Glen/0000-0002-4417-3929 NR 30 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0104 J9 CHEM PHYS JI Chem. Phys. PD JUN 1 PY 1995 VL 195 IS 1-3 BP 395 EP 401 DI 10.1016/0301-0104(95)00031-I PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA RE023 UT WOS:A1995RE02300032 ER PT J AU KHOT, NS AF KHOT, NS TI OPTIMUM STRUCTURAL DESIGN AND ROBUST ACTIVE CONTROL USING SINGULAR-VALUE CONSTRAINTS SO COMPUTATIONAL MECHANICS LA English DT Article ID H-INFINITY; SYSTEMS AB This paper introduces a methodology for simultaneously designing a minimum weight structure and robust active controls to reduce vibrations in an aircraft structure due to external disturbances. The design problem is posed as a mathematical optimization problem with the principal objective function being the weight of the structure. The robust control design is achieved by specifying appropriate constraints on singular values of the closed-loop transfer matrices. The control approach selected for this purpose is based on designing a dynamic compensator that simultaneously minimizes the upper bound of a quadratic performance index H-2 and the H-infinity norm of a disturbance transfer function of a multi-input/multi-output system. The controller can tolerate both real parameter uncertainty in the structural frequencies and damping, and unmodelled dynamics. The design variables are the cross-sectional areas of the structure and the parameters used in the design of a control system; The method was applied to three structures idealized with membrane elements, shear panels and bar elements with embedded actuators and sensors simulating an active flexible aircraft wing. RP KHOT, NS (reprint author), USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0178-7675 J9 COMPUT MECH JI Comput. Mech. PD JUN PY 1995 VL 16 IS 3 BP 208 EP 215 PG 8 WC Mathematics, Interdisciplinary Applications; Mechanics SC Mathematics; Mechanics GA RM694 UT WOS:A1995RM69400006 ER PT J AU DAVIDSEN, P GONZALEZ, JJ MURAIDA, DJ SPECTOR, JM TENNYSON, RD AF DAVIDSEN, P GONZALEZ, JJ MURAIDA, DJ SPECTOR, JM TENNYSON, RD TI APPLYING SYSTEM DYNAMICS TO COURSEWARE DEVELOPMENT SO COMPUTERS IN HUMAN BEHAVIOR LA English DT Article ID INFORMATION AB The general purpose of the work reported here is to extend and validate system dynamics technologies for their use in managing the complexities and risks of la ge scale, courseware development projects. Courseware refers to a variety of computer-based instructional materials used for the purpose of creating effective learning environments. While the costs for computer hardware are generally declining, new hardware and software technologies are appearing with a frequency that makes it a serious challenge to hire and train designers, developers and project managers and to plan and produce computer-based instructional materials that are both effective (in terms of learning) and efficient (in terms of costs and technology utilization). C1 ARMSTRONG LAB,HRTC,BROOKS AFB,TX 78235. UNIV BERGEN,N-5020 BERGEN,NORWAY. AGDER COLL ENGN,GRIMSTAD,NORWAY. UNIV MINNESOTA,MINNEAPOLIS,MN 55455. NR 34 TC 2 Z9 2 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0747-5632 J9 COMPUT HUM BEHAV JI Comput. Hum. Behav. PD SUM PY 1995 VL 11 IS 2 BP 325 EP 339 DI 10.1016/0747-5632(95)00001-C PG 15 WC Psychology, Multidisciplinary; Psychology, Experimental SC Psychology GA RA128 UT WOS:A1995RA12800012 ER PT J AU SHANG, JS CALAHAN, DA VIKSTROM, B AF SHANG, JS CALAHAN, DA VIKSTROM, B TI PERFORMANCE OF A FINITE-VOLUME CEM CODE ON MULTICOMPUTERS SO COMPUTING SYSTEMS IN ENGINEERING LA English DT Article AB A cell center, upwind biased, spatially third-order and temporally second-order finite volume procedure for solving the Maxwell equations in time domain has been ported to a Intel Touchstone Delta and a Paragon multicomputer. Using a one-dimensional domain partition scheme, the computer code has attained a data processing rate of 7.56 Gigaops on the 512 nodes of the Delta and 3.56 Gigaops on the 179 nodes of the Paragon XP/S systems. The high parallel efficiency of the present computer program however, is sustainable only up to a limited size of addressable memory (nodes x 48 x 96). The scalable performance range of the present code is significantly extended by operating on the Paragon system at the present time. C1 UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109. RP SHANG, JS (reprint author), WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 28 TC 5 Z9 5 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-0521 J9 COMPUT SYST ENG JI Comput. Syst. Eng. PD JUN PY 1995 VL 6 IS 3 BP 241 EP 250 DI 10.1016/0956-0521(95)00015-R PG 10 WC Computer Science, Interdisciplinary Applications; Engineering, Multidisciplinary SC Computer Science; Engineering GA TD868 UT WOS:A1995TD86800004 ER PT J AU FARES, A KINDT, BT LAPUMA, P PERRAM, GP AF FARES, A KINDT, BT LAPUMA, P PERRAM, GP TI DESORPTION-KINETICS OF TRICHLOROETHYLENE FROM POWDERED SOILS SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article ID VOLATILE ORGANIC-COMPOUNDS; AQUIFER MATERIAL; SORPTION; ADSORPTION; DIFFUSION; TOLUENE AB The short-term desorption of trichloroethylene (TCE) from standard powdered soils including limestone, flint clay, glass sand, plastic day, and soda feldspar was examined using an infra red absorption technique. The vapor-phase concentration of TCE as a function of desorption time is adequately described by the Langmuir kinetic mechanism. The desorption is rather rapid, with the vapor phase reaching a near steady-state value in several hours. The desorption rates are independent of the resident time for laboratory exposure of the soil to TCE in the range of 19-1350 h. The rate coefficients for desorption exhibit an Arrhenius temperature dependence with an activation energy of 0.37 +/- 0.03 eV and are linearly dependent on the surface area to volume ratio for particle sizes up to 10 mu m. The cross-section for optical absorption at lambda = 3.2 mu m was determined to be a = 3.34 +/- 0.01 x 10(-20) cm(2). C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. OI Perram, Glen/0000-0002-4417-3929 NR 25 TC 7 Z9 7 U1 0 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD JUN PY 1995 VL 29 IS 6 BP 1564 EP 1568 DI 10.1021/es00006a019 PG 5 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA RB131 UT WOS:A1995RB13100036 PM 22276878 ER PT J AU DETWILER, DT SHEN, MHH VENKAYYA, VB AF DETWILER, DT SHEN, MHH VENKAYYA, VB TI FINITE-ELEMENT ANALYSIS OF LAMINATED COMPOSITE STRUCTURES CONTAINING DISTRIBUTED PIEZOELECTRIC ACTUATORS AND SENSORS SO FINITE ELEMENTS IN ANALYSIS AND DESIGN LA English DT Article AB A finite element formulation is developed to model the response of laminated composite plates containing distributed piezoceramic actuators and sensors. The stress equations of motion are derived using the variational principle with respect to the total structural and electrical potential energy. These stress equations are converted to a two-dimensional finite element equation using a First Order Shear Deformation Laminated Plate Theory. The finite element equation is based on the QUAD4 isoparametric quadrilateral element which is currently used in such FEA codes as COSMIC/NASTRAN and ASTROS. This new piezoelectric finite element formulation was incorporated into an FEA computer code and validated by comparison with published experimental and numerical results. C1 OHIO STATE UNIV,DEPT AERONAUT & ASTRONAUT ENGN,COLUMBUS,OH. USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP DETWILER, DT (reprint author), ALTAIR ENGN INC,1757 MAPLELAWN,TROY,MI, USA. NR 16 TC 92 Z9 96 U1 1 U2 8 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-874X J9 FINITE ELEM ANAL DES JI Finite Elem. Anal. Des. PD JUN PY 1995 VL 20 IS 2 BP 87 EP 100 DI 10.1016/0168-874X(95)00013-J PG 14 WC Mathematics, Applied; Mechanics SC Mathematics; Mechanics GA RE177 UT WOS:A1995RE17700001 ER PT J AU SHARARA, FI ILLIONS, EH CODDINGTON, CC SCOTT, RT AF SHARARA, FI ILLIONS, EH CODDINGTON, CC SCOTT, RT TI EVALUATION OF THE TRU-TRAX CERVICAL-MUCUS PENETRATION TEST IN PREDICTING FERTILIZATION AND PREGNANCY RATES IN IN-VITRO FERTILIZATION SO HUMAN REPRODUCTION LA English DT Article DE CERVICAL MUCUS; FERTILIZATION RATES; IN-VITRO FERTILIZATION; TRU-TRAX ID HUMAN INVITRO FERTILIZATION; SPERM PENETRATION; HUMAN-SPERMATOZOA; PROGRAM; ASSAY; INFERTILITY; STIMULATION; INDICATOR AB To evaluate the role of the Tru-Trax cervical mucus penetration testing of prognosis of patient performance in in-vitro fertilization (IVF) and to examine its use as a possible screening test prior to IVF, 133 couples presenting with infertility prospectively underwent in-vitro cervical mucus penetration testing. Of these, 66 couples subsequently underwent IVF. The penetration distance of the vanguard spermatozoa in both human and bovine mucus was compared to the fertilization and pregnancy rates during IVF. The fertilization rates in couples with normal human mucus penetration (n = 42, 80.6%) were higher, than those with abnormal scores (n = 24, 49.6%; P < 0.001), Similarly, the fertilization rates in those couples with normal bovine mucus penetration (n = 50, 77.5%) were higher than those with abnormal results (n = 16, 40.0%; P < 0.001), Fertilization rates and penetration scores were highly correlated for both human (r = 0.66; P < 0.0001) and bovine (r = 0.66; P < 0.0001) mucus. However, the predictive value of an abnormal result for failed fertilization was poor for both human and bovine penetration, since 83.33 and 81.25% fertilized respectively. Pregnancy rates did not differ among couples with normal and abnormal penetrations. In conclusion, in-vitro cervical mucus penetration testing was highly correlated with fertilization rates in IVF. However, the poor predictive value of an abnormal result may limit the value of this test for generalized pretreatment screening. C1 UNIFORMED SERV UNIV HLTH SCI,DEPT OBSTET & GYNECOL,BETHESDA,MD 20814. UNIV ILLINOIS,COLL MED,CHICAGO,IL 60612. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. JONES INST REPROD MED,NORFOLK,VA. NR 23 TC 9 Z9 9 U1 0 U2 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0268-1161 J9 HUM REPROD JI Hum. Reprod. PD JUN PY 1995 VL 10 IS 6 BP 1481 EP 1485 PG 5 WC Obstetrics & Gynecology; Reproductive Biology SC Obstetrics & Gynecology; Reproductive Biology GA RG971 UT WOS:A1995RG97100044 PM 7593520 ER PT J AU SHANG, JS AF SHANG, JS TI CHARACTERISTIC-BASED ALGORITHMS FOR SOLVING THE MAXWELL EQUATIONS IN THE TIME-DOMAIN SO IEEE ANTENNAS AND PROPAGATION MAGAZINE LA English DT Article ID SCHEMES AB Several numerical algorithms, developed in the computational-fluid-dynamics community for solving the Euler equations, are found to be equally effective for solving the Maxwell equations in the time domain. The basic approach of these numerical procedures is to achieve the Riemann approximation to the time-dependent, three-dimensional problem in each spatial direction. The three-dimensional equations are then solved by a sequence of one-dimensional problems. This approach is referred to as a characteristic-based method. The basic algorithm can be implemented for both finite-difference and finite-volume procedures, and has the potential to eliminate the spurious-wave reflections from the numerical boundaries of the computational domain. The formulation and relative merit of the finite-difference and the finite-volume approximations are presented, together with numerical results from these procedures. RP SHANG, JS (reprint author), USAF,WRIGHT LAB,AFMC,FIM,FLIGHT DYNAM DIRECTORATE,BLDG 450,2645 5TH ST,SUITE 6,WRIGHT PATTERSON AFB,OH 45433, USA. NR 22 TC 22 Z9 23 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1045-9243 J9 IEEE ANTENNAS PROPAG JI IEEE Antennas Propag. Mag. PD JUN PY 1995 VL 37 IS 3 BP 15 EP 25 DI 10.1109/74.388807 PG 11 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RD551 UT WOS:A1995RD55100004 ER PT J AU LEE, R TROMBLEY, G JOHNSON, B RESTON, R MAH, M HAVASY, C ITO, C AF LEE, R TROMBLEY, G JOHNSON, B RESTON, R MAH, M HAVASY, C ITO, C TI HIGH-TEMPERATURE CHARACTERISTICS OF GAAS-MESFET DEVICES FABRICATED WITH ALAS BUFFER LAYER SO IEEE ELECTRON DEVICE LETTERS LA English DT Article AB We have investigated the influence of AlAs buffer layers on MESFET drain leakage current at temperatures from 25-350 degrees C. The experimental results show that subthreshold drain leakage current is substantially decreased with increasing AlAs layer thickness, For a 1 mu m x 200 mu m MESFET with 2500 Angstrom of AlAs buffer layer, we have obtained 78 mu A of subthreshold drain leakage current at 350 degrees C ambient temperature, This leakage current value is a factor of 2.5 improvement over the test previously reported results at 350 degrees C. C1 NE CONSORTIUM ENGN EDUC,ST CLOUD,FL 34769. RP LEE, R (reprint author), USAF,DIV RES,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,DAYTON,OH 45433, USA. NR 11 TC 10 Z9 10 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD JUN PY 1995 VL 16 IS 6 BP 265 EP 267 DI 10.1109/55.790730 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA RA182 UT WOS:A1995RA18200018 ER PT J AU SUN, DC TOWE, E OSTDIEK, PH GRANTHAM, JW VANSUCH, GJ AF SUN, DC TOWE, E OSTDIEK, PH GRANTHAM, JW VANSUCH, GJ TI POLARIZATION CONTROL OF VERTICAL-CAVITY SURFACE-EMITTING LASERS THROUGH USE OF AN ANISOTROPIC GAIN DISTRIBUTION IN [110]-ORIENTED STRAINED-QUANTUM-WELL STRUCTURES SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Article AB An analysis of the in-plane optical matrix elements connected with the gain distribution of (In,Ga)As-GaAs quantum-well structures on (110) GaAs substrates is presented, The in-plane gain distribution is found to be anisotropic-with a maximum directed along the [($) over bar 110]-[1 $($) over bar$$ 10] crystallographic axis, Optically-pumped vertical-cavity surface-emitting lasers on the (110) surface with these quantum wells in the cavity exhibit stable, well-defined polarization states; this stability is believed to be a consequence of the predicted anisotropic gain distribution on the (110) surface, Of the two orthogonal eigen polarizations observed, the one with the higher optical intensity, for a given pump power, was found to be stablized along the [($) over bar 110] crystallographic axis; this is in agreement with the analysis. C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. RP SUN, DC (reprint author), UNIV VIRGINIA,OPT & QUANTUM ELECTR LAB,CHARLOTTESVILLE,VA 22903, USA. NR 18 TC 26 Z9 26 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1077-260X J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD JUN PY 1995 VL 1 IS 2 BP 674 EP 680 DI 10.1109/2944.401257 PG 7 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA RW848 UT WOS:A1995RW84800072 ER PT J AU BIGGERS, RR NORTON, MG MAARTENSE, I PETERSON, TL MOSER, EK DEMPSEY, D CAPANO, MA TALVACCHIO, J BROWN, JL WOLF, JD AF BIGGERS, RR NORTON, MG MAARTENSE, I PETERSON, TL MOSER, EK DEMPSEY, D CAPANO, MA TALVACCHIO, J BROWN, JL WOLF, JD TI MICROSTRUCTURE AND PROPERTIES OF YBA2CU3O7 THIN-FILMS GROWN ON VICINAL LAALO3 SUBSTRATES SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID MECHANISM AB Thin films of YBa2Cu3O7 have been grown on vicinal LaAlO3 substrates by pulsed-laser deposition. In most cases, the substrate surface, nominally (001), has been rotated similar to 6 degrees about an axis parallel to the <110> direction, Films grown on these surfaces were found to have substantially improved properties compared to those obtained for films deposited on (001)-oriented substrates under equivalent conditions at our facility. The surface morphology of the films exhibited an elongated granular structure which differed markedly from the more equiaxed grain structure found in films grown on (001)-oriented substrates. Furthermore, this particular elongated morphology and improvement in properties seems to occur only for films deposited at higher laser energies (similar to 30J/cm(2)). C1 WASHINGTON STATE UNIV,DEPT MECH & MAT ENGN,PULLMAN,WA 99164. WESTINGHOUSE ELECT CORP,PITTSBURGH,PA 15235. UNIV DAYTON,DAYTON,OH 45469. USAF,WRIGHT LAB,WL ELOT,WRIGHT PATTERSON AFB,OH 45433. RP BIGGERS, RR (reprint author), USAF,WRIGHT LAB,WL MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 6 Z9 6 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1241 EP 1245 DI 10.1109/77.402786 PN 2 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700024 ER PT J AU PETERSON, TL MAARTENSE, I BIGGERS, RR AF PETERSON, TL MAARTENSE, I BIGGERS, RR TI SELF-HEATING HOTSPOT EFFECTS IN HTS THIN-FILMS SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony AB The current-voltage (I-V) characteristics associated with self-heating hotspots In HTS thin films patterned into several different geometries have been investigated under both current-biased and voltage-biased conditions. The hysteretic behavior of the I-V characteristics as a function of sample temperature are in agreement with behavior predicted by resistive hotspot models for superconducting bridges, Additionally, the effect of magnetic fields on tbe current required to generate, as well as maintain, II normal hotspot has been investigated. Finally, the characteristics of voltage pulses resulting from a step increase in current have been examined to study the propagation of hot spots in HTS films. RP PETERSON, TL (reprint author), USAF,WRIGHT LAB,WL MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 5 Z9 5 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1436 EP 1439 DI 10.1109/77.402835 PN 2 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700073 ER PT J AU JIANG, H DREHMAN, AJ ANDREWS, RJ HORRIGAN, JA VITTORIA, C AF JIANG, H DREHMAN, AJ ANDREWS, RJ HORRIGAN, JA VITTORIA, C TI YBA2CU3OX FILMS PREPARED IN A PARTIAL-PRESSURE OF AIR USING PULSED-LASER DEPOSITION SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID THIN-FILMS AB YBa2Cu3Ox superconducting films have been deposited by laser deposition on yttrium stabilized cubic zirconia (YSZ) substrates using a partial pressure of air instead of oxygen. The T-c of these films was over 2 degrees higher than films made in the same deposition system using oxygen. The films made using air had an on-set temperature higher than 93 K and an off-set temperature around 90 K, with typical transition temperature widths less than 1 degree; while the films made using oxygen had typical-on-set temperatures around 90 K and off-set temperatures around 87 K. X-ray diffraction indicated that the films were oriented with the c-axis normal to the substrate surface. The critical current densities of the films, as obtained by dc transport measurements, were found to be on the order of 10(6) A/cm(2) at 77 K and self magnetic field, and the room temperature resistivities were about 245 mu Omega-cm. An unique aspect of these films was that the normal state resistivity ties showed nonlinear behavior with respect to temperatures. However, no secondary phase was detected by x-ray diffraction and SQUID magnetometry. C1 NORTHEASTERN UNIV, BOSTON, MA 02115 USA. RP JIANG, H (reprint author), USAF, ROME LAB, ERX, HANSCOM AFB, BEDFORD, MA 01731 USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1521 EP 1524 DI 10.1109/77.402861 PN 2 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700095 ER PT J AU DREHMAN, AJ DEROV, JS HORRIGAN, JA ANDREWS, RJ LINDEN, DS AF DREHMAN, AJ DEROV, JS HORRIGAN, JA ANDREWS, RJ LINDEN, DS TI HEATING OF LARGE-AREA SUBSTRATES FOR IN-SITU DEPOSITION OF YBCO SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID SUPERCONDUCTING FILMS AB We have developed a radiant technique far substrate heating which we found particularly useful for the in situ deposition of high temperature superconducting films, Using this technique, large area YBa2Cu3Ox films were deposited, using off-axis sputter deposition, onto lanthanum aluminate and sapphire substrates, the latter using an yttria-stabilized zirconia buffer layer, For both types of substrates we were able to obtain c-axis oriented films, The dc and microwave properties of the films deposited on lanthanum aluminate are presented along with the dc measurements of the films deposited on sapphire, The motivation for employing this method of heating are discussed, along with our current plans for scaling up the process to produce even larger area films. RP DREHMAN, AJ (reprint author), USAF,ROME LAB,RLER,80 SCOTT DR,HANSCOM AFB,BEDFORD,MA 01731, USA. NR 6 TC 2 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1793 EP 1796 DI 10.1109/77.402927 PN 2 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700161 ER PT J AU HERD, JS HALBRITTER, J HERD, KG AF HERD, JS HALBRITTER, J HERD, KG TI MICROWAVE-POWER DEPENDENCE OF HTS THIN-FILM TRANSMISSION-LINES SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID SURFACE IMPEDANCE; LOSSES AB Stripline resonator measurements indicate nonlinear response in thin film YBa2Cu3O7-x transmission lines when microwave power levels exceed a certain critical level. The nonlinearities likely originate in the intergranular junctions of the c-axis epitaxial films. An effective medium approach is used here to model the series impedance of the grain junctions. The field dependence of the surface resistance and penetration depth in the junctions are modeled at low fields with a GinzBurg-Landau type response, at intermediate fields by an intergranular fluxoid state, and at high fields by a flux flow shielding state which occurs at a frequency and temperature dependent transition field H-trJ. Comparisons tire made with measured data over a range of frequencies and power levels. C1 KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH,INST MAT & FESTKORPERFORSCH,W-7500 KARLSRUHE,GERMANY. GE CO,SCHENECTADY,NY 12301. RP HERD, JS (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 7 TC 9 Z9 9 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 1991 EP 1993 DI 10.1109/77.402976 PN 2 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP637 UT WOS:A1995RP63700210 ER PT J AU BANCHET, J JOUGLAR, J VUILLERMOZ, PL WEINSTOCK, H AF BANCHET, J JOUGLAR, J VUILLERMOZ, PL WEINSTOCK, H TI MAGNETOMECHANICAL BEHAVIOR OF STEEL VIA SQUID MAGNETOMETRY SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article; Proceedings Paper CT 1994 Applied Superconductivity Conference CY OCT 16-21, 1994 CL BOSTON, MA SP MIT, Plasma Fus Ctr, Dept Elect Engn & Comp Sci, US DOE, Off Fus Energy, High Energy Phys, Adv Res Projects Agcy, Natl Inst Stand & Technol, USN, Naval Res Lab, USN, Off Naval Res, Quantum Magnet, IGC Adv Superconductors, Stone & Webster Engn Corp, Technova, Martin Marietta Astronaut, Walker Sci Inc, Westinghouse Sci & Technol Ctr, Babcock & Wilcox, Bechtel Corp, Cosine, Inc, Synchrony ID HYSTERESIS AB Steel bars mere subjected to stress-strain hysteresis cycles in a horizontal tensile-testing machine while changes in the vertical component of the magnetic field above these bars was recorded by a DC SQUID second-order gradiometer. Magnetic Barkhausen noise was observed after repeated cycling and especially at stress levels for which the magnetic field was at an extremum value. Of greatest practical interest is the fact that the area of the magnetomechanical hysteresis loop (Delta Phi(z) sigma) increased dramatically - by orders of magnitude - over a large number (up to 10(5)) of fatigue cycles. This may have important implications for the in situ nondestructive evaluation of steel. C1 AFOSR, BOLLING AFB, DC 20332 USA. RP INSA, F-69621 VILLEURBANNE, FRANCE. NR 6 TC 19 Z9 20 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1051-8223 EI 1558-2515 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD JUN PY 1995 VL 5 IS 2 BP 2486 EP 2489 DI 10.1109/77.403095 PN 3 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA RP640 UT WOS:A1995RP64000102 ER PT J AU XIA, XG SUTER, BW OXLEY, ME AF XIA, XG SUTER, BW OXLEY, ME TI ON NECESSARY AND SUFFICIENT CONDITIONS FOR PERFECT RECONSTRUCTION MULTIDIMENSIONAL DELAY CHAIN SYSTEMS SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Letter ID MULTIRATE FILTER BANKS; COMMUTATIVITY; ALGORITHMS; DESIGN AB In this correspondence, we present some necessary:and sufficient conditions for a perfect reconstruction (PR) modified multidimensional (MD) delay chain system, With these results, one is able to systematically check if a D-dimensional delay chain system with a D x D sampling matrix M and a D x D delay matrix L has PR property in a simpler way than before, where the matrix modulo operations are avoided, Moreover, given a D x D sampling-matrix M, in many casks one can determine all possible D x D delay matrices L so that the delay chain systems with the sampling matrix M have PR property, Several examples are provided, We also present a method to generate: D x D sampling and delay matrices M and L such that/their corresponding traditional MD delay chain systems are PR. C1 USAF,INST TECHNOL,DEPT MATH & STAT,WRIGHT PATTERSON AFB,OH 45433. RP XIA, XG (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 1 Z9 2 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD JUN PY 1995 VL 43 IS 6 BP 1515 EP 1519 DI 10.1109/78.388867 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA RC865 UT WOS:A1995RC86500020 ER PT J AU SIMPSON, JR KEATS, JB AF SIMPSON, JR KEATS, JB TI SENSITIVITY STUDY OF THE CUSUM CONTROL CHART WITH AN ECONOMIC-MODEL SO INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS LA English DT Article DE EXPERIMENT DESIGN; STATISTICAL PROCESS CONTROL; COST RATIOS; SIMULATION AB Economic control chart designs have not been universally implemented in industry for several reasons. For example, the parameters are too numerous and are often difficult to estimate accurately. A possible solution to these problems involves performing a sensitivity analysis of the inputs to determine which parameters are significant and how parameter misspecification impacts the results. Using two-level fractional factorial designs, we identify highly significant parameters in the Lorenzen and Vance economic control chart model under a Cumulative Sum (CUSUM) condition. The response variables examined include the expected cost per time unit and the decision variables sample size, sampling interval, control chart decision interval and reference value. Verification and misspecification analysis support our conclusions with respect to the expected cost per time unit response variable. The sensitivity study highlights the importance of experiment design in understanding the underlying behavior of the model inputs. Results of testing several scenarios indicate that a small subset of model inputs actually drive the cost response, which should make industrial implementation an easier task. The search for significant inputs can be aided by a study of the relative magnitudes of some factors such as the assignable cause rate and the ratio of out-of-control to in-control quality costs. RP SIMPSON, JR (reprint author), USAF ACAD,DEPT MATH SCI,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 11 Z9 11 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0925-5273 J9 INT J PROD ECON JI Int. J. Prod. Econ. PD JUN PY 1995 VL 40 IS 1 BP 1 EP 19 DI 10.1016/0925-5273(94)00099-V PG 19 WC Engineering, Industrial; Engineering, Manufacturing; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA RZ745 UT WOS:A1995RZ74500001 ER PT J AU HELLER, ER FISHER, K SZMULOWICZ, F MADARASZ, FL AF HELLER, ER FISHER, K SZMULOWICZ, F MADARASZ, FL TI SUPERLATTICE PARAMETERS FOR OPTIMUM ABSORPTION IN INAS/INXGA1-XSB SUPERLATTICE INFRARED DETECTORS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID STRAINED-LAYER SUPERLATTICES; SEMICONDUCTOR-SEMIMETAL TRANSITION; IDEAL INGASB/INAS SUPERLATTICES; ENVELOPE-FUNCTION APPROXIMATION; LATTICE BAND-STRUCTURE; GASB SUPER-LATTICES; INAS/GA1-XINXSB SUPERLATTICES; GA1-XINXSB/INAS SUPERLATTICES; ELECTRONIC-STRUCTURE; INTERFACE STOICHIOMETRY C1 MLPO,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. UNIV ALABAMA,OPT SCI & ENGN PROGRAM,HUNTSVILLE,AL 35899. UNIV ALABAMA,CTR APPL OPT,HUNTSVILLE,AL 35899. NR 50 TC 23 Z9 23 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 1 PY 1995 VL 77 IS 11 BP 5739 EP 5746 DI 10.1063/1.359218 PG 8 WC Physics, Applied SC Physics GA QZ282 UT WOS:A1995QZ28200035 ER PT J AU REINHARDT, KC YEO, YK HENGEHOLD, RL AF REINHARDT, KC YEO, YK HENGEHOLD, RL TI JUNCTION CHARACTERISTICS OF GA0.5IN0.5P N(+)P DIODES AND SOLAR-CELLS SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID LIGHT-EMITTING-DIODES; BEAM EPITAXIAL-GROWTH; RECOMBINATION; LASERS; HETEROJUNCTIONS; TRANSISTORS; ELECTRON; CURRENTS; GAINP C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP REINHARDT, KC (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 38 TC 11 Z9 11 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 1 PY 1995 VL 77 IS 11 BP 5763 EP 5772 DI 10.1063/1.359221 PG 10 WC Physics, Applied SC Physics GA QZ282 UT WOS:A1995QZ28200038 ER PT J AU FISCHER, DW OHMER, MC SCHUNEMANN, PG POLLAK, TM AF FISCHER, DW OHMER, MC SCHUNEMANN, PG POLLAK, TM TI DIRECT MEASUREMENT OF ZNGEP2 BIREFRINGENCE FROM 0.66 TO 12.2 MU-M USING POLARIZED-LIGHT INTERFERENCE SO JOURNAL OF APPLIED PHYSICS LA English DT Article C1 LOCKHEED SANDERS INC,NASHUA,NH 03061. RP FISCHER, DW (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPO,3005 P ST,STE 6,WRIGHT PATTERSON AFB,OH 45433, USA. NR 17 TC 41 Z9 41 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JUN 1 PY 1995 VL 77 IS 11 BP 5942 EP 5945 DI 10.1063/1.359175 PG 4 WC Physics, Applied SC Physics GA QZ282 UT WOS:A1995QZ28200061 ER PT J AU CARRETTA, TR REE, MJ AF CARRETTA, TR REE, MJ TI AIR-FORCE OFFICER QUALIFYING TEST VALIDITY FOR PREDICTING PILOT TRAINING PERFORMANCE SO JOURNAL OF BUSINESS AND PSYCHOLOGY LA English DT Article ID CLASSIFICATION; SELECTION AB The AFOQT was validated for the prediction of pilot training criteria. Subjects were 7,563 men and women selected for pilot training on the basis of educational attainment and AFOQT scores. Criterion variables included daily flight training grades, check flight grades in subsonic and transonic aircraft, and overall academic performance in the 53 week pilot training course. Test validities were presented as observed, corrected for multivariate range restriction, and corrected for multivariate range restriction and unreliability. The Aviation Information and Instrument Comprehension tests, measures of job knowledge, were most predictive of daily and check flights in the initial subsonic jet aircraft. This reflects the relative greater importance of prior job knowledge early in training. The Scale Reading test, a measure of perceptual speed, was most predictive for daily and check flights in the advanced transonic training aircraft. The Arithmetic Reasoning test, a good measure of general cognitive ability, was most predictive of aeronautics in ground school. The development of an improved pilot selection composite is suggested by the results of the validity analyses. RP CARRETTA, TR (reprint author), ARMSTRONG LAB,HRMA,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 12 TC 20 Z9 20 U1 0 U2 0 PU HUMAN SCI PRESS INC PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013-1578 SN 0889-3268 J9 J BUS PSYCHOL JI J. Bus. Psychol. PD SUM PY 1995 VL 9 IS 4 BP 379 EP 388 DI 10.1007/BF02230977 PG 10 WC Business; Psychology, Applied SC Business & Economics; Psychology GA QV460 UT WOS:A1995QV46000004 ER PT J AU GREER, JM PALAZOTTO, AN AF GREER, JM PALAZOTTO, AN TI NONLINEAR DYNAMICS OF SIMPLE SHELL-MODEL WITH CHAOTIC SNAPPING BEHAVIOR SO JOURNAL OF ENGINEERING MECHANICS-ASCE LA English DT Article ID LAMINATED CYLINDRICAL PANELS AB A simple spring-mass numerical model (MSHELL), is developed as a tool to find appropriate integration time steps for nonlinear finite-element analysis. MSHELL possesses many features of nonlinearly deforming deep shells and, by matching some physical parameters of the MSHELL system and a nonlinear finite-element model (DSHELL), their dynamic behavior is both qualitatively and quantitatively similar. MSHELL is used to develop time-step criteria fpr both pre- and postsnapping behavior of a transversely pointloaded cylindrical shell. The criteria are then applied in a multiple-time-step method to DSHELL. The results indicate the simple model's correlation with the finite-element model and potential for saving computer time by changing the integration time step during a finite-element analysis based on MSHELL's behavior. Chaotic motion, characterized by one or more positive Lyapunov exponents, is seen in the simple model and likely explains unpredictable postcollapse results in the DSHELL finite-element code. C1 USAF, INST TECHNOL, ENY, DEPT AERONAUT & ASTRONAUT, WRIGHT PATTERSON AFB, OH 45433 USA. RP GREER, JM (reprint author), USAF, INST TECHNOL, EN 522, WRIGHT PATTERSON AFB, OH 45433 USA. NR 21 TC 6 Z9 6 U1 0 U2 0 PU ASCE-AMER SOC CIVIL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2398 SN 0733-9399 J9 J ENG MECH-ASCE JI J. Eng. Mech.-ASCE PD JUN PY 1995 VL 121 IS 6 BP 753 EP 761 DI 10.1061/(ASCE)0733-9399(1995)121:6(753) PG 9 WC Engineering, Mechanical SC Engineering GA QY916 UT WOS:A1995QY91600013 ER PT J AU MARIT, GB COOPER, MK LATENDRESSE, JR AF MARIT, GB COOPER, MK LATENDRESSE, JR TI PROCESSING AND IMMUNOHISTOCHEMICAL STAINING OF RAT NASAL SECTIONS SO JOURNAL OF HISTOTECHNOLOGY LA English DT Article DE BRDU; CAPILLARY GAP TECHNOLOGY; CYTOCHROME P450IIE1; EDTA DECALCIFICATION; IMMUNOHISTOCHEMICAL STAINING PCNA; RAT NOSE ID PARAFFIN SECTIONS; FIXATION; PCNA; BROMODEOXYURIDINE; CYTOCHROME-P-450; INTENSIFICATION; EXPRESSION; ENZYMES; LESIONS; TISSUE AB We describe a simple method of processing rat nasal cavities for histological and immunohistologic examination in which a commercial product, HistoChoice, replaced formalin as the fixative. The nose was sectioned prior to decalcification, and ethylenediamine tetraacetic acid was used as the decalcifying agent. The entire processing period from collection of the specimen to slide preparation was less than 3 work days. Immunohistochemical procedures to measure cell proliferation and cytochrome P450 activity were applied to these specimens using capillary gap technology. RP MARIT, GB (reprint author), ARMSTRONG LAB,DIV TOXICOL,OET,HSC,OL,BLDG 79,AREA B,2856 G ST,WRIGHT PATTERSON AFB,OH 45433, USA. RI Latendresse, John/A-9215-2009; Messier, Claude/A-2322-2008 OI Messier, Claude/0000-0002-4791-1763 NR 27 TC 1 Z9 1 U1 0 U2 1 PU NATL SOC HISTOTECHNOLOGY PI BOWIE PA 4201 NORTHVIEW DR, STE 502, BOWIE, MD 20716-1073 SN 0147-8885 J9 J HISTOTECHNOL JI J. Histotechnol. PD JUN PY 1995 VL 18 IS 2 BP 111 EP 114 PG 4 WC Cell Biology SC Cell Biology GA RL130 UT WOS:A1995RL13000004 ER PT J AU POSTA, CG AF POSTA, CG TI LAPAROSCOPIC SURGERY IN PREGNANCY - REPORT ON 2 CASES SO JOURNAL OF LAPAROENDOSCOPIC SURGERY LA English DT Note ID CHOLECYSTECTOMY; APPENDECTOMY AB Laparoscopic cholecystectomy (LC) and laparoscopic appendectomy (LA) are well-established surgical procedures. Although pregnancy initially was considered a contraindication to laparoscopic surgical procedures, successful reports of LC and LA during pregnancy have appeared in the surgical literature, Two cases are presented in this report, one LC and one LA, both in second-trimester pregnancies. Both pregnancies continued undisturbed and ended with spontaneous vaginal delivery of healthy infants. Laparoscopic surgery in pregnant patients is feasible and provides a reasonable alternative to the standard surgical approach. RP POSTA, CG (reprint author), USAF HOSP,GEN SURG SERV,SURG CLIN,75TH MED GRP,HILL AFB,UT 84056, USA. NR 14 TC 14 Z9 17 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 1052-3901 J9 J LAPAROENDOSC SURG JI J. Laparoendosc. Surg. PD JUN PY 1995 VL 5 IS 3 BP 203 EP 205 DI 10.1089/lps.1995.5.203 PG 3 WC Surgery SC Surgery GA RG743 UT WOS:A1995RG74300012 PM 7548997 ER PT J AU KOLESAR, ES DYSON, CS AF KOLESAR, ES DYSON, CS TI OBJECT IMAGING WITH A PIEZOELECTRIC ROBOTIC TACTILE SENSOR SO JOURNAL OF MICROELECTROMECHANICAL SYSTEMS LA English DT Article ID ARRAY; TRANSDUCERS; SYSTEMS; FILMS; AIR AB A two-dimensional, electrically multiplexed robotic tactile sensor was realized by coupling a piezoelectric polyvinylidene fluoride (PVDF) polymer film to a monolithic silicon integrated circuit (IC), The IC incorporates 64 sensor electrodes arranged in a symmetrical 8x8 matrix, Each electrode occupies a 400x400 mu m square area, and they are separated from each other by 300 mu m. A 40-mu m-thick piezoelectric PVDF polymer film was attached to the electrode array with an electrically nonconductive urethane adhesive, The response of the tactile sensor is linear for loads spanning 0.8-135 grams-of-force (gmf) (0.008-1.35 Newtons (N)), The response bandwidth is 25 Hz, the hysteresis level is tolerable; and, for operation in the sensor's linear range, taxel crosstalk is negligible, The historically persistent stability and response reproducibility limitation associated with piezoelectric-based tactile sensors has been solved by implementing a novel pre-charge voltage bias technique to initialize the pre- and post-load sensor responses, A rudimentary tactile object image measurement procedure for applied loads has been devised to recognize the silhouette of a sharp edge, square, trapezoid, isosceles triangle, circle, toroid, slotted screw, and cross-slotted screw. [92] C1 USAF, CTR AERONAUT SYST, VFWR, SYST PROGRAM OFF F15, WRIGHT PATTERSON AFB, OH 45433 USA. RP KOLESAR, ES (reprint author), TEXAS CHRISTIAN UNIV, DEPT ENGN, FT WORTH, TX 76129 USA. NR 51 TC 65 Z9 65 U1 1 U2 15 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1057-7157 EI 1941-0158 J9 J MICROELECTROMECH S JI J. Microelectromech. Syst. PD JUN PY 1995 VL 4 IS 2 BP 87 EP 96 DI 10.1109/84.388117 PG 10 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Instruments & Instrumentation; Physics, Applied SC Engineering; Science & Technology - Other Topics; Instruments & Instrumentation; Physics GA RB446 UT WOS:A1995RB44600004 ER PT J AU DAJANI, I AF DAJANI, I TI 2ND-HARMONIC GENERATION EFFICIENCIES IN GERMANIUM-DOPED PLANAR WAVE-GUIDES - A NORMAL-MODE ANALYSIS SO JOURNAL OF MODERN OPTICS LA English DT Article ID GLASS OPTICAL FIBERS; 2ND-HARMONIC GENERATION AB Second-harmonic generation (SHG) in germanium-doped silica planar waveguides seeded by a fundamental wave and its second harmonic is investigated using normal-mode analysis. The effects of self- and cross-phase modulation are included in this analysis. A set of two coupled equations that describe the evolution of the amplitude of the writing second-harmonic beam along the direction of propagation is obtained. The solution to these coupled equations is used to write the effective chi((2)) grating. This grating is then used to determine the second-harmonic power generated when the beam is read with only a fundamental wave propagating in a particular waveguiding mode. Due to diffraction, the conversion efficiency saturates as a function of waveguide length. It is also found that if the reading fundamental wave is in the same mode as the writing fundamental wave, relatively significant SHG is obtained with the generated second-harmonic wave propagating primarily in the same mode as the seed second-harmonic wave. The power generated in any of the higher order modes is of the same order as that for the lowest order mode. RP DAJANI, I (reprint author), USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840, USA. NR 16 TC 3 Z9 3 U1 0 U2 2 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0950-0340 J9 J MOD OPTIC JI J. Mod. Opt. PD JUN PY 1995 VL 42 IS 6 BP 1329 EP 1341 DI 10.1080/09500349514551151 PG 13 WC Optics SC Optics GA RE406 UT WOS:A1995RE40600016 ER PT J AU MCCALL, S WAGENHORST, BB AF MCCALL, S WAGENHORST, BB TI PAINFUL OPHTHALMOPLEGIA CAUSED BY HEMANGIOPERICYTOMA OF THE CAVERNOUS SINUS SO JOURNAL OF NEURO-OPHTHALMOLOGY LA English DT Article DE HEMANGIOPERICYTOMA; CAVERNOUS SINUS; CNS NEOPLASM; OPHTHALMOPLEGIA AB Progressive, painful ophthalmoplegia developed in a 34-year-old man. MRI scan revealed an enhancing mass in the left cavernous sinus. Histologic examination of resected tumor revealed reticulin staining and cytologic features of hemangiopericytoma. Characteristics of intracranial hemangiopericytoma are reviewed. C1 USAF,SHAW AIR FORCE BASE HOS,DEPT OPHTHALMOL,SHAW AFB,SC. NR 13 TC 5 Z9 5 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 1070-8022 J9 J NEURO-OPHTHALMOL JI J. Neuro-Ophthal. PD JUN PY 1995 VL 15 IS 2 BP 98 EP 101 PG 4 WC Clinical Neurology; Ophthalmology SC Neurosciences & Neurology; Ophthalmology GA RF559 UT WOS:A1995RF55900008 PM 7550937 ER PT J AU KESHARI, V WIJEKOON, WMKP PRASAD, PN KARNA, SP AF KESHARI, V WIJEKOON, WMKP PRASAD, PN KARNA, SP TI HYPERPOLARIZABILITIES OF ORGANIC-MOLECULES - AB-INITIO TIME-DEPENDENT COUPLED PERTURBED HARTREE-FOCK-ROOTHAAN STUDIES OF BASIC HETEROCYCLIC STRUCTURES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID NONLINEAR OPTICAL-PROPERTIES; FIELD CALCULATIONS; MICROWAVE-SPECTRA; MODEL COMPOUNDS; POLARIZABILITY; NITROANILINE; DERIVATIVES; POLYMERS; UNITS AB The linear polarizability, alpha, the first hyperpolarizability, beta, and the second hyperpolarizability, gamma, of three different classes of basic heterocyclic organic structures have been calculated by the ab inio time-dependent coupled Hartree-Fock-Roothaan method using a 4-31G basis set augmented by diffuse p and d functions. For the alpha and gamma coefficients, the calculated orders thiophene > pyrrole > furan for the five-membered rings; pyridine > pyrazole > s-triazine for the aromatic bases; and benzothiazole, oxazole for the fused ring systems show a qualitative relationship with the corresponding order in Delta epsilon(HOMO-LUMO) of the respective group of molecules. The beta values do not appear to show a discernible trend. The dispersion of alpha(-omega;omega) and those of gamma(-omega;0,0,omega), gamma(-omega;omega,omega,-omega), gamma(-2 omega;0,omega,omega), and gamma(-3 omega;omega,omega,omega) in the case of the five-membered rings are also reported. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. UNIV PUERTO RICO,DEPT CHEM,RIO PIEDRAS,PR 00931. SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14214. NR 41 TC 40 Z9 41 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD JUN 1 PY 1995 VL 99 IS 22 BP 9045 EP 9050 DI 10.1021/j100022a015 PG 6 WC Chemistry, Physical SC Chemistry GA RB252 UT WOS:A1995RB25200015 ER PT J AU KIM, J KUO, SP KOSSEY, P AF KIM, J KUO, SP KOSSEY, P TI MODELING AND NUMERICAL-SIMULATION OF MICROWAVE PULSE-PROPAGATION IN AN AIR-BREAKDOWN ENVIRONMENT SO JOURNAL OF PLASMA PHYSICS LA English DT Article ID NITROGEN; PLASMA; LAYERS AB The dependences of the propagation characteristics of an intense microwave pulse on the intensity, frequency, width and shape of the pulse in an air-breakdown environment are examined. Numerical simulations lead to a useful empirical relation (PW)-W-3 = alpha = const, where P and W are the incident power and width of the pulse and alpha depends on the percentage of the pulse energy transferred from the source point to a given position. The results also show that, using a single unfocused microwave pulse transmitted upwards from the ground, the maximum electron density produced at, for example, 50 km altitude is limited by the tail erosion effect to below 10(6) cm(-3). Repetitive-pulse and focused-beam approaches are then examined. Both approaches can increase the maximum electron density by no more than an order of magnitude. Hence a scheme using two obliquely propagating pulses intersecting at the desired height (e.g. 50 km) is considered. It is shown that the generated electron density at the lowest intersecting position can be enhanced by more than two orders of magnitude. C1 POLYTECH INST NEW YORK,DEPT ELECT ENGN,FARMINGDALE,NY 11735. USAF,PHILLIPS LAB,BEDFORD,MA 01731. RP KIM, J (reprint author), POLYTECH INST NEW YORK,WEBER RES INST,ROUTE 110,FARMINGDALE,NY 11735, USA. NR 15 TC 7 Z9 8 U1 0 U2 2 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-3778 J9 J PLASMA PHYS JI J. Plasma Phys. PD JUN PY 1995 VL 53 BP 253 EP 266 PN 3 PG 14 WC Physics, Fluids & Plasmas SC Physics GA TA531 UT WOS:A1995TA53100001 ER PT J AU SMIKLE, CB SOREM, KA WIANS, FH HANKINS, GDV AF SMIKLE, CB SOREM, KA WIANS, FH HANKINS, GDV TI MEASURING QUANTITATIVE SERUM HUMAN CHORIONIC-GONADOTROPIN - VARIATIONS IN LEVELS BETWEEN KITS SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article DE GONADOTROPINS; CHORIONIC ID ECTOPIC PREGNANCY; DOWNS-SYNDROME; SONOGRAPHIC FINDINGS; DIAGNOSIS; ZONE; HCG AB Human chorionic gonadotropin (hCG) may be used in the monitoring of early pregnancy. It may also be used as a tumor marker in the diagnosis and follow-up of gestational trophoblastic disease, choriocarcinoma and testicular carcinoma. The combination of maternal serum unconjugated estriol, alpha-fetoprotein and quantitative hCG has shown promise as an antepartum screen for Down syndrome, In the quantitative assessment of hCG, the calibrators used by various kits are standardized to one of two different standards, either the Second International Standard or the First International Reference Preparation (IRP), established by the World Health Organization in 1968 and 1975, respectively. The IRP is now considered the Third International Standard, and both terms may be used interchangeably. Confusion may exist in clinical situations if quantitative hCG levels determined by assays in different laboratories using different standards are compared or used simultaneously Practitioners are advised to be aware of which calibration standard is utilized in their laboratory and to interpret the results accordingly. C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX. RP SMIKLE, CB (reprint author), USAF,WILFORD HALL MED CTR,DEPT OBSTET & GYNECOL,2200 BERGQUIST DR,LACKLAND AFB,TX 78236, USA. NR 31 TC 6 Z9 6 U1 0 U2 0 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD JUN PY 1995 VL 40 IS 6 BP 439 EP 442 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA RD795 UT WOS:A1995RD79500007 PM 7650656 ER PT J AU IMBERY, TA BURGESS, JO BATZER, RC AF IMBERY, TA BURGESS, JO BATZER, RC TI COMPARING THE RESISTANCE OF DENTIN BONDING AGENTS AND PINS IN AMALGAM RESTORATIONS SO JOURNAL OF THE AMERICAN DENTAL ASSOCIATION LA English DT Article ID FRACTURE-RESISTANCE; BIOCOMPATIBILITY; REINFORCEMENT; MICROLEAKAGE; RETENTION AB This in vitro study involving 84 caries-free molar specimens examined the resistance of complex amalgam restorations retained by two dentin bonding agents-Amalgambond and Amalgambond Plus-four regular TMS pins, six regular TMS pins and four pins in conjunction with Amalgambond. Analysis indicated that the Amalgambond restorations were significantly weaker than the other types. Amalgambond Plus restorations were significantly stronger than the Amalgambond restorations but not different from the remaining groups. The authors concluded that complex amalgam restorations should be retained with a combination of adhesive and mechanical retention. C1 USAF,MED GRP,LANGLEY AFB,VA. UNIV TEXAS,HLTH SCI CTR,DEPT RESTORAT DENT,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 46 TC 15 Z9 16 U1 0 U2 0 PU AMER DENTAL ASSN PI CHICAGO PA 211 E CHICAGO AVE, CHICAGO, IL 60611 SN 0002-8177 J9 J AM DENT ASSOC JI J. Am. Dent. Assoc. PD JUN PY 1995 VL 126 IS 6 BP 753 EP 759 PG 7 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA RC144 UT WOS:A1995RC14400011 PM 7797731 ER PT J AU WELSH, BM AF WELSH, BM TI SPECKLE IMAGING SIGNAL-TO-NOISE RATIO PERFORMANCE AS A FUNCTION OF FRAME INTEGRATION TIME SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Article ID ADAPTIVE OPTICS; INTERFEROMETRY; PHASE AB In the past 10 years astronomical image reconstruction based on a variety of speckle techniques has become a popular means of enhancing and improving the resolution of turbulence-degraded images. These techniques are based on the Fourier processing of a large number of turbulence-degraded snapshots or frames of the irradiance in the system's image plane. The number of snapshots needed is largely a function of the signal-to-noise ratio (SNR) of the Fourier components of a single snapshot. Estimating these Fourier components is hampered by the inherent noise induced by the photon detection process and the random effect of the turbulent atmosphere. In most cases the SNR is much less than unity, and many frames are averaged to improve the overall SNR. It is well established that if the frames are uncorrelated then the SNR improves in comparison with the single-frame SNR by a factor of root m, where m is the number of frames averaged. This fact implies that the smallest exposure time possible is desirable in order for m to be maximized for a given observation time. On the other hand, because of finite photon flux levels and read noise effects it can be shown that the exposure time should be increased at the cost of reducing m. Results from a detailed SNR analysis of estimating the modulus of an object's Fourier spectrum from turbulence-distorted images are described. Unlike previous analyses, this work takes into account the proper temporal correlation properties of the atmosphere and the spatial frequency being estimated as well as the interframe correlations that degrade the SNR improvement factor from the ideal case of root m. RP WELSH, BM (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 18 TC 6 Z9 6 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD JUN PY 1995 VL 12 IS 6 BP 1364 EP 1374 DI 10.1364/JOSAA.12.001364 PG 11 WC Optics SC Optics GA QZ273 UT WOS:A1995QZ27300020 ER PT J AU WARD, WE AF WARD, WE TI STATE OF THE SOCIETY MESSAGE SO LUBRICATION ENGINEERING LA English DT Article RP WARD, WE (reprint author), USAF,7481 LARISSA COURT,DAYTON,OH 45414, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD JUN PY 1995 VL 51 IS 6 BP 461 EP 462 PG 2 WC Engineering, Mechanical SC Engineering GA RE047 UT WOS:A1995RE04700003 ER PT J AU LIBERIO, PD GARVER, JM AF LIBERIO, PD GARVER, JM TI LUBRICITY OF MILITARY JET FUELS SO LUBRICATION ENGINEERING LA English DT Article DE AEROSPACE; CORROSION INHIBITOR ADDITIVES AB In 1954, a corrosion inhibitor additive was required in JP-4, a wide cut gasoline type aviation turbine fuel, to alleviate corrosion carry-over from ground fuel systems to aircraft. The additive was blamed for fuel filtration problems and removed from the JP-4 specification in 1965. Almost immediately, the U.S. Air Force started experiencing lubricity problems with fuel pumps and controllers. Fuel controller tests showed that when a corrosion inhibitor was added to the fuel, the lubricity problem was alleviated. The effectiveness of the corrosion inhibitor additives as lubricity improvers was then studied. A variety of test methods evolved for use in evaluting the effectiveness of a corrosion inhibitor as a lubricity improver. In 1989, the ball-on-cylinder lubricity evaluator (BOCLE) test was added to MIL-I-25017, a militry specification for fuel soluble corrosion inhibitor/lubricity improver, to determine lubricity effectiveness of the corrosion inhibitor additives. Since the revision of this specification, all corrosion inhibitor/lubricity improver additives on the qualified products list, QPL-25017, have been tested using the BOCLE. Due to aircraft engine redesign, MIL-T-25524, a thermally stable turbine fuel, recently required the addition of a lubricity additive. Concerns were raised to the effect that corrosion inhibitor/lubricity improver would have on the thermal stability of thermally stable turbine fuel. Recent jet fuel thermal oxidation tester and BOCLE evaluation of the additives in thermally stable turbine fuel addressed these concerns. RP LIBERIO, PD (reprint author), AERO PROP & POWER DIRECTORATE,DIV FUELS & LUBRICAT,FUELS BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 0 Z9 0 U1 2 U2 3 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD JUN PY 1995 VL 51 IS 6 BP 467 EP 473 PG 7 WC Engineering, Mechanical SC Engineering GA RE047 UT WOS:A1995RE04700005 ER PT J AU KAUFFMAN, RE SQROW, LD WOLF, JD CENTERS, PW AF KAUFFMAN, RE SQROW, LD WOLF, JD CENTERS, PW TI FLOW-THROUGH AND HAND-HELD DEVICES TO PROVIDE ADVANCED LUBRICANT SEGREGATION CAPABILITY FOR PROTOTYPE OIL COLLECTION FACILITIES SO LUBRICATION ENGINEERING LA English DT Article C1 AERO PROP & POWER DIRECTORATE,AERO PROP & POWER LAB,WRIGHT PATTERSON AFB,OH. RP KAUFFMAN, RE (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD JUN PY 1995 VL 51 IS 6 BP 497 EP 501 PG 5 WC Engineering, Mechanical SC Engineering GA RE047 UT WOS:A1995RE04700010 ER PT J AU CARROLL, JF CONVERTINO, VA WOOD, CE GRAVES, JE LOWENTHAL, DT POLLOCK, ML AF CARROLL, JF CONVERTINO, VA WOOD, CE GRAVES, JE LOWENTHAL, DT POLLOCK, ML TI ADAPTATIONS TO EXERCISE TRAINING IN HEALTHY OLDER-PEOPLE - RESPONSE SO MEDICINE AND SCIENCE IN SPORTS AND EXERCISE LA English DT Letter ID CARDIOVASCULAR-RESPONSES; SKELETAL-MUSCLE; MEN; WOMEN C1 USAF,AEROSP CARDIOVASC RES LAB,BROOKS AFB,TX 78235. UNIV FLORIDA,DEPT PHYSIOL,GAINESVILLE,FL 32608. SYRACUSE UNIV,DEPT HLTH & PHY EDUC,SYRACUSE,NY 13244. UNIV FLORIDA,VET AFFAIRS MED CTR,GAINESVILLE,FL 32608. UNIV FLORIDA,CTR EXERCISE SCI,GAINESVILLE,FL 32608. RP CARROLL, JF (reprint author), UNIV MISSISSIPPI,MED CTR,DEPT PHYSIOL & BIOPHYS,JACKSON,MS 39216, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0195-9131 J9 MED SCI SPORT EXER JI Med. Sci. Sports Exerc. PD JUN PY 1995 VL 27 IS 6 BP 941 EP 943 PG 3 WC Sport Sciences SC Sport Sciences GA RC358 UT WOS:A1995RC35800023 ER PT J AU FRANCK, CC FRANCK, JB AF FRANCK, CC FRANCK, JB TI MICROWAVE CIRCUIT-DESIGN THEORY USING OPTICAL TECHNIQUES SO MICROWAVE JOURNAL LA English DT Article C1 USAF,OFF SCI RES,WASHINGTON,DC 20330. RP FRANCK, CC (reprint author), RANNOCH CORP,ALEXANDRIA,EGYPT. NR 6 TC 0 Z9 0 U1 0 U2 0 PU HORIZON HOUSE-MICROWAVE PI NORWOOD PA 685 CANTON ST, NORWOOD, MA 02062 SN 0192-6225 J9 MICROWAVE J JI Microw. J. PD JUN PY 1995 VL 38 IS 6 BP 60 EP & PG 0 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA RE022 UT WOS:A1995RE02200002 ER PT J AU ENSIGN, BG DOUGHERTY, TH BOWLUS, IN KONECKI, EA AF ENSIGN, BG DOUGHERTY, TH BOWLUS, IN KONECKI, EA TI ABO AND RH BLOOD-TYPE ERRORS ON AIR-FORCE IDENTIFICATION CARDS SO MILITARY MEDICINE LA English DT Article AB Our study is intended to determine if the blood types recorded on identification cards carried by U.S. Air Force personnel contain significant errors. We studied 262 active duty Air Force personnel. Eleven errors in blood type information were identified, including seven Rh type errors and six ABO typing errors, Such errors may arise when self-reporting of blood type is relied upon to create identification cards, The significance of these findings for wartime transfusion practices is discussed in light of current United States and NATO policy, Suggestions to reduce the error rate are offered. RP ENSIGN, BG (reprint author), USAF,MED CTR,WILFORD HALL MED CTR,DEPT PATHOL,PSL,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 6 Z9 6 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUN PY 1995 VL 160 IS 6 BP 288 EP 290 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA RJ152 UT WOS:A1995RJ15200006 PM 7659225 ER PT J AU SHIKORA, SA AF SHIKORA, SA TI APPROACHES TO NUTRITIONAL SUPPORT FOR BATTLE CASUALTIES AND TRAUMA - CURRENT MILITARY PRACTICE AND LESSONS LEARNED FROM THE CIVILIAN SECTOR SO MILITARY MEDICINE LA English DT Article AB In conflict, military medicine differs greatly from its civilian counterpart, Treatment strategies are designed to manage a potentially large number of severely wounded and function in an often hostile and poorly equipped environment, The most severely injured are stabilized and prepared for transport away from the war zone to a larger, better-equipped facility, At present no formal military policy exists concerning nutrition support, Traditionally, it has not been employed until the wounded arrived at a major medical center. Factors including the limited capacity to transport formula, lack of sophistication of battle zone facilities, and the rapid movement of wounded have been major drawbacks to providing early nutrition. The care of the urban trauma patient is relevant for the battle wounded of the military. There is ample evidence in the literature to support the use of nutrition support soon after injury, This article briefly describes the limitations of the military medical system in reference to nutrition support and the role of nutrition support for the civilian trauma patient, The lessons learned from the civilian experience may help formulate a nutrition strategy for the battle wounded that may become included into the standardized care policy. RP SHIKORA, SA (reprint author), WILFORD HALL USAF MED CTR,PSSG,DEPT SURG,NUTR SUPPORT SERV,LACKLAND AFB,TX 78236, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD JUN PY 1995 VL 160 IS 6 BP 312 EP 317 PG 6 WC Medicine, General & Internal SC General & Internal Medicine GA RJ152 UT WOS:A1995RJ15200013 PM 7659232 ER PT J AU CASE, FT HINES, CW SATCHWELL, SN AF CASE, FT HINES, CW SATCHWELL, SN TI ANALYSIS OF AIR OPERATIONS DURING DESERT SHIELD AND DESERT-STORM SO NAVAL RESEARCH LOGISTICS LA English DT Article AB This article discusses the role played by HQ USAF operations research analysts assigned to the Director of Operations planning staff at HQ CENTAF Forward (Riyadh, Saudi Arabia) during operations DESERT SHIELD and DESERT STORM. We describe the development of a prototype system to demonstrate the benefits of in-theater operations analysis, and the tasks associated with developing and maintaining a model of the Iraqi integrated air defense system. The model required the operations analysts to interact closely with theater-level and wing-level mission planners to accurately represent the unfolding operations plan. We describe the techniques and tools used to play out the initial stages of the allied air campaign. We also address (i) the estimation of attrition of Iraqi air defense units and Allied Air, (ii) the analysis of airspace congestion during air refueling operations, and (iii) how a simulation model (EADSIM) was used to help pinpoint the cause of Allied air losses. We conclude with a discussion of the impact of analysis on military decision makers at multiple levels of command, based on personal experience. (C) 1995 John Wiley and Sons, Inc. RP CASE, FT (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0894-069X J9 NAV RES LOG JI Nav. Res. Logist. PD JUN PY 1995 VL 42 IS 4 BP 715 EP 736 DI 10.1002/1520-6750(199506)42:4<715::AID-NAV3220420412>3.0.CO;2-C PG 22 WC Operations Research & Management Science SC Operations Research & Management Science GA QT543 UT WOS:A1995QT54300010 ER PT J AU CALHOUN, BC BROST, B AF CALHOUN, BC BROST, B TI EMERGENCY MANAGEMENT OF SUDDEN PUERPERAL FEVER SO OBSTETRICS AND GYNECOLOGY CLINICS OF NORTH AMERICA LA English DT Article ID CESAREAN-SECTION; MATERNAL MORTALITY; PELVIC THROMBOPHLEBITIS; INFECTIOUS MORBIDITY; DIAGNOSIS; MASTITIS; THERAPY; WOMEN; RISK AB The development of fever during the puerperium is a relatively common complication Although the primary source of these fevers usually stems from the genital tract, a thorough evaluation of the febrile puerperal patient for other sites of infection is necessary before initiating antibiotic therapy. Increased awareness of factors that predispose a pateint to postpartum infection has significantly reduced maternal morbidity and mortality. C1 MED UNIV S CAROLINA,DEPT OBSTET & GYNECOL,CHARLESTON,SC 29425. RP CALHOUN, BC (reprint author), USAF,MED CTR,DEPT OBSTET & GYNECOL,DIV OBSTET,81 MG SGHSO,301 FISHER ST,SUITE 107,KEESLER AFB,MS 39534, USA. OI Brost, Brian/0000-0002-4903-4186 NR 25 TC 8 Z9 8 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0889-8545 J9 OBSTET GYN CLIN N AM JI Obstet. Gynecol. Clin. N. Am. PD JUN PY 1995 VL 22 IS 2 BP 357 EP 367 PG 11 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA RB285 UT WOS:A1995RB28500012 PM 7651676 ER PT J AU GOLDSTEIN, DH CHENAULT, DB CHIPMAN, RA AF GOLDSTEIN, DH CHENAULT, DB CHIPMAN, RA TI POLARIZATION ANALYSIS AND MEASUREMENT SO OPTICAL ENGINEERING LA English DT Editorial Material C1 NICHOLS RES CORP,SHALIMAR,FL 32579. UNIV ALABAMA,DEPT PHYS,HUNTSVILLE,AL 35899. RP GOLDSTEIN, DH (reprint author), USAF,WRIGHT LAB,MNGA,101 W EGLIN BLVD,SUITE 280,EGLIN AFB,FL 32542, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD JUN PY 1995 VL 34 IS 6 BP 1543 EP 1544 DI 10.1117/12.210267 PG 2 WC Optics SC Optics GA RC347 UT WOS:A1995RC34700002 ER PT J AU TONDIGLIA, VP NATARAJAN, LV SUTHERLAND, RL BUNNING, TJ ADAMS, WW AF TONDIGLIA, VP NATARAJAN, LV SUTHERLAND, RL BUNNING, TJ ADAMS, WW TI VOLUME HOLOGRAPHIC IMAGE STORAGE AND ELECTROOPTICAL READOUT IN A POLYMER-DISPERSED LIQUID-CRYSTAL FILM SO OPTICS LETTERS LA English DT Article AB We report storage and electrical switching of holographic image data in an economical polymer-dispersed liquid-crystal material. The hologram is recorded in a fast, single-step process and can be reversibly erased and restored repeatedly by the application of fields of approximately 10-15 V/mu m, with a response time of 22 mu s and a relaxation time of 42 mu s. Simple (quasi-sinusoidal) holographic transmission gratings also are studied with switching fields of <5 V/mu m and with response and relaxation times of 25 and 44 mu s, respectively. C1 SCI APPLICAT INT CORP,DAYTON,OH 45431. WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RI Adams, Wade/A-7305-2010 NR 19 TC 107 Z9 109 U1 1 U2 14 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD JUN 1 PY 1995 VL 20 IS 11 BP 1325 EP 1327 DI 10.1364/OL.20.001325 PG 3 WC Optics SC Optics GA RB330 UT WOS:A1995RB33000036 PM 19859514 ER PT J AU TIRRE, WC DIXIT, S AF TIRRE, WC DIXIT, S TI READING INTERESTS - THEIR DIMENSIONALITY AND CORRELATION WITH PERSONALITY AND COGNITIVE-FACTORS SO PERSONALITY AND INDIVIDUAL DIFFERENCES LA English DT Article; Proceedings Paper CT 6th Meeting of the International-Society-for-the-Study-of-Individual-Differences (ISSID) CY JUL 17-21, 1993 CL BALTIMORE, MD SP Int Soc Study Individual Differences ID 16PF AB How do individual differences in reading interests relate to personality traits and cognitive abilities? USAF airmen (N = 471) responded to the 16PF, the Culture Fair Intelligence Test (CFIT), and a reading interest survey that asked them to rate their level of interest in each of 81 topics. Factor analysis resulted in 10 correlated reading interest factors. Reading interest factor scores were then related to six factors (the Big Five plus intelligence) found to underlie the 16PF and CFIT. In general, reading interests and personality factors were only modestly related (38% of coefficients were significant, mean standardized path coefficient = 0.25, mean R = 0.43). The exceptions were mechanical and wildlife, hunting and fishing, which had strong negative correlations with agreeableness. Factor analysis of the four subtests of the CFIT and the ten subtests of the Armed Services Vocational Aptitude Battery resulted in five factors. Ability factors interpreted as crystallized abilities showed moderate relationships with reading interests (43% of coefficients were significant, mean, standardized path coefficient = 0.42, mean R = 0.53). We conclude that reading interests largely reflect crystallized abilities. RP TIRRE, WC (reprint author), HUMAN RESOURCES DIRECTORATE,ARMSTRONG LAB,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 20 TC 7 Z9 7 U1 3 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0191-8869 J9 PERS INDIV DIFFER JI Pers. Individ. Differ. PD JUN PY 1995 VL 18 IS 6 BP 731 EP 738 DI 10.1016/0191-8869(94)00211-A PG 8 WC Psychology, Social SC Psychology GA QX688 UT WOS:A1995QX68800004 ER PT J AU HARVILLE, DL AF HARVILLE, DL TI FROM TURMOIL TO TRIUMPH - NEW LIFE AFTER MERGERS, ACQUISITIONS, AND DOWNSIZING - MARKS,ML SO PERSONNEL PSYCHOLOGY LA English DT Book Review RP HARVILLE, DL (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX, USA. NR 1 TC 0 Z9 0 U1 0 U2 1 PU PERSONNEL PSYCHOLOGY INC PI BOWLING GREEN PA 745 HASKINS ROAD, SUITE A, BOWLING GREEN, OH 43402 SN 0031-5826 J9 PERS PSYCHOL JI Pers. Psychol. PD SUM PY 1995 VL 48 IS 2 BP 433 EP 436 PG 4 WC Psychology, Applied; Management SC Psychology; Business & Economics GA RD887 UT WOS:A1995RD88700019 ER PT J AU MOZDY, E NEWELL, TC ALSING, PM KOVANIS, V GAVRIELIDES, A AF MOZDY, E NEWELL, TC ALSING, PM KOVANIS, V GAVRIELIDES, A TI SYNCHRONIZATION AND CONTROL IN A UNIDIRECTIONALLY COUPLED ARRAY OF CHAOTIC DIODE RESONATORS SO PHYSICAL REVIEW E LA English DT Article ID PERIODIC-ORBITS; SYSTEMS C1 USAF,PHILLIPS LAB,LIDN,CTR NONLINEAR OPT,KIRTLAND AFB,NM 87117. NR 26 TC 8 Z9 8 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JUN PY 1995 VL 51 IS 6 BP 5371 EP 5376 DI 10.1103/PhysRevE.51.5371 PN A PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA RE082 UT WOS:A1995RE08200027 ER PT J AU LINSTER, BG AF LINSTER, BG TI GAME-THEORY AND SOCIAL-CONTRACT, VOL 1 - PLAYING FAIR - BINMORE,K SO PUBLIC CHOICE LA English DT Book Review RP LINSTER, BG (reprint author), USAF ACAD,DEPT ECON & GEOG,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0048-5829 J9 PUBLIC CHOICE JI Public Choice PD JUN PY 1995 VL 83 IS 3-4 BP 390 EP 392 PG 3 WC Economics; Political Science SC Business & Economics; Government & Law GA QZ340 UT WOS:A1995QZ34000016 ER PT J AU EPSTEIN, LJ STROLLO, PJ DONEGAN, RB DELMAR, J HENDRIX, C WESTBROOK, PR AF EPSTEIN, LJ STROLLO, PJ DONEGAN, RB DELMAR, J HENDRIX, C WESTBROOK, PR TI OBSTRUCTIVE SLEEP-APNEA IN PATIENTS WITH HUMAN-IMMUNODEFICIENCY-VIRUS (HIV) DISEASE SO SLEEP LA English DT Article DE HIV; OBSTRUCTIVE SLEEP APNEA; SLEEP; DAYTIME SOMNOLENCE ID HOMOSEXUAL MEN; INFECTED PATIENTS; LYMPH-NODES; LYMPHADENOPATHY; DISTURBANCES AB Adenotonsillar hypertrophy has been identified as an early manifestation of human immunodeficiency virus (HIV) disease. Three patients with HIV disease were identified with obstructive sleep apnea (OSA) due to adenotonsillar hypertrophy. In order to examine the relationship between HIV-induced adenotonsillar hypertrophy and OSA, 134 patients with asymptomatic HIV disease were screened with a self-administered sleep survey designed to detect OSA and excessive daytime somnolence. Patients meeting trigger score criteria were studied with overnight polysomnography and nine additional patients were identified with OSA. The only consistent risk factor for OSA in this young and primarily nonobese population was the presence of adenotonsillar hypertrophy, found in 11 of 12 patients with OSA. Three patients had tonsillar biopsy or tonsillectomy and all displayed benign follicular lymphoid hyperplasia. Scores on the Epworth Sleepiness Scale (ESS) were significantly higher for patients with OSA, indicating a greater degree of hypersomnolence (mean ESS scores: OSA + = 11.4 +/- 3.6, OSA- = 7.8 +/- 4.6, p = 0.012). In our population, patients with HIV disease had a prevalence of OSA of 7%. HIV-induced adenotonsillar hypertrophy is a risk factor for the development of OSA. HIV patients with complaints of excessive daytime sleepiness and snoring who are found to have adenotonsillar hypertrophy on exam should undergo a sleep evaluation to rule out the presence of OSA. C1 WILFORD HALL USAF MED CTR,DEPT MED,DIV INFECT DIS,LACKLAND AFB,TX 78236. CEDARS SINAI MED CTR,DEPT MED,DIV PULM & CRIT CARE MED,LOS ANGELES,CA 90048. RP EPSTEIN, LJ (reprint author), WILFORD HALL USAF MED CTR,DEPT MED,DIV PULM & CRIT CARE MED,2200 BERGQUIST DR,STE-1,LACKLAND AFB,TX 78236, USA. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 32 TC 19 Z9 19 U1 0 U2 0 PU AMER SLEEP DISORDERS ASSOC PI ROCHESTER PA 1610 14TH STREET NW SUITE 300, ROCHESTER, MN 55806 SN 0161-8105 J9 SLEEP JI Sleep PD JUN PY 1995 VL 18 IS 5 BP 368 EP 376 PG 9 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA RG298 UT WOS:A1995RG29800010 PM 7676171 ER PT J AU SIH, GC WEBB, BL PEN, YS SHARP, D PFEFFERLE, J AF SIH, GC WEBB, BL PEN, YS SHARP, D PFEFFERLE, J TI FRAGMENTATION CHARACTERISTICS OF A WELDED SPHERICAL TITANIUM PRESSURE-VESSEL .1. INHOMOGENEITY OF LOCAL STRAINS AND STRAIN RATES SO THEORETICAL AND APPLIED FRACTURE MECHANICS LA English DT Article ID PREDICTION; WELDMENTS; FAILURE; CRACK; JOINT AB Developed in this work is a methodology for assessing the fragmentation characteristics of a welded spherical titanium pressure vessel. The presentation is divided into two parts. Part I makes use of the incremental theory of plasticity such that the nonlinear constitutive behavior for each material element can be determined individually in accordance with the local strain and strain rate. This enables the coverage of a much wider range of the strain rate dependent deformation in contrast to the conventional approach where each material element is governed by a single constitutive relation. That is no limitation would be placed on the change in local strain rates. Details of the weldment and region near the vessel opening are analyzed as sites of potential failure initiation. Particular emphases are placed on an accurate evaluation of the volume energy density contours from which failure by fragmentation could be predicted in terms of location and critical pressure. Part II is concerned with determining the energy imparted to the fragments, which are characterized by size, velocity and distance traveled. C1 EASTERN SPACE & MISSILE CTR,PATRICK AFB,FL 32925. AEROSP CORP,EL SEGUNDO,CA 90009. GEN PHYS CORP,SPACE COAST OFF,TITUSVILLE,FL 32783. RP SIH, GC (reprint author), LEHIGH UNIV,INST FRACTURE & SOLID MECH,BETHLEHEM,PA 18015, USA. NR 17 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8442 J9 THEOR APPL FRACT MEC JI Theor. Appl. Fract. Mech. PD JUN PY 1995 VL 23 IS 1 BP 1 EP 28 DI 10.1016/0167-8442(95)00002-V PG 28 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA RG282 UT WOS:A1995RG28200001 ER PT J AU SIH, GC WEBB, BL PEN, YS SHARP, D PFEFFERLE, J AF SIH, GC WEBB, BL PEN, YS SHARP, D PFEFFERLE, J TI FRAGMENTATION CHARACTERISTICS OF A WELDED SPHERICAL TITANIUM PRESSURE-VESSEL .2. PLASTIC-DEFORMATION AND FRACTURE PREDICTION SO THEORETICAL AND APPLIED FRACTURE MECHANICS LA English DT Article AB Based on the elastic-plastic stress and energy density results in Part I for a welded spherical titanium pressure vessel, Part II carries out a details analysis of failure where plastic deformation and fragmentation take place. The volume energy density criterion predicts failure to first initiate in the heat affected zone and bottle-neck section of the vessel at an internal pressure of approximately 8.5 ksi followed by failure of the weld material at 9.2 ksi. Total rupture of the vessel into two halves is estimated to occur between 9 to 10 ksi with a portion of the weld material and bottle-neck section ejected as debris at high velocities as they dislodge from the main vessel. The average velocity of the two large fragments is estimated to be approximately 600 ft/s; their travelled distance is approximately 18 feet within 30 ms. These predictions are in general agreement with the available experimental data. Increase of the average density in the vessel was found to be close to that estimated from the isentropic thermodynamic process at the terminal internal pressure of 10 ksi that was previously reported. Other details provide a more in-depth understanding of the bursting behavior of pneumatic pressure vessels. C1 EASTERN SPACE & MISSILE CTR,PATRICK AFB,FL 32925. AEROSP CORP,EL SEGUNDO,CA 90009. GEN PHYS CORP,SPACE COAST OFF,TITUSVILLE,FL 32783. RP SIH, GC (reprint author), LEHIGH UNIV,INST FRACTURE & SOLID MECH,BETHLEHEM,PA 18015, USA. NR 18 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-8442 J9 THEOR APPL FRACT MEC JI Theor. Appl. Fract. Mech. PD JUN PY 1995 VL 23 IS 1 BP 29 EP 53 DI 10.1016/0167-8442(95)00003-W PG 25 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA RG282 UT WOS:A1995RG28200002 ER PT J AU PATTERSON, WR MCGLASSON, DL DALTON, LM AF PATTERSON, WR MCGLASSON, DL DALTON, LM TI INVESTIGATION OF KILLER WHALE AND DOLPHIN PLATELET-AGGREGATION RESPONSE SO THROMBOSIS AND HAEMOSTASIS LA English DT Meeting Abstract C1 SEA WORLD TEXAS,SAN ANTONIO,TX. UNIV TEXAS,MED BRANCH,MED BRANCH,GALVESTON,TX 77550. WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU F K SCHATTAUER VERLAG GMBH PI STUTTGART PA P O BOX 10 45 45, LENZHALDE 3, D-70040 STUTTGART, GERMANY SN 0340-6245 J9 THROMB HAEMOSTASIS JI Thromb. Haemost. PD JUN PY 1995 VL 73 IS 6 BP 1047 EP 1047 PG 1 WC Hematology; Peripheral Vascular Disease SC Hematology; Cardiovascular System & Cardiology GA RP385 UT WOS:A1995RP38500565 ER PT J AU TRIVEDI, HK GERARDI, DT ROSADO, L AF TRIVEDI, HK GERARDI, DT ROSADO, L TI EVALUATION OF FATIGUE AND WEAR CHARACTERISTICS OF M50 STEEL USING SYNTHETIC ESTER TURBINE-ENGINE LUBRICANTS .1. SO WEAR LA English DT Article DE ROLLING CONTACT FATIGUE; SPECIFIC FILM THICKNESS; BOUNDARY LUBRICATION; WEAR VOLUME ID ROLLING-CONTACT FATIGUE; M-50 STEEL AB The fatigue and wear characteristics of AISI VIM-VAR M50 steel were evaluated using three fully formulated synthetic ester-based lubricants. Tests were conducted using a rolling contact fatigue test rig of the ball-on-rod type at a cyclic maximum hertzian stress level of 4.83 GPa (700 klbf in(-2)) and temperatures of 23 degrees C (74 degrees F) and 177 degrees C (350 degrees F). The lubricants evaluated included three polyol esters conforming to the MIL-L7808J (3.16 cSt at 100 degrees C), MIL-L-23699 (4.93 at at 100 degrees C), and DOD-L-85734 (4.93 at at 100 degrees C) specifications. Although preliminary results seem to suggest that rolling contact fatigue life may be affected by the type of lubricant, the differences observed were not statistically significant. Of the three lubricants tested, MIL-L-7808J generally exhibited the highest fatigue life while DOD-L-85734 showed the lowest. According to specific film thickness calculations, all three lubricants were tested under boundary lubrication. It is believed that, due to this operating lubrication regime, wear volume per stress cycle and fatigue life were unaffected by lubricant type and only affected by temperature. Also, there was some correlation found between wear and fatigue life for all lubricants. C1 USAF,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH. RP TRIVEDI, HK (reprint author), UES INC,4401 DAYTON XENIA RD,DAYTON,OH, USA. NR 14 TC 5 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0043-1648 J9 WEAR JI Wear PD JUN PY 1995 VL 185 IS 1-2 BP 111 EP 117 DI 10.1016/0043-1648(95)06601-2 PG 7 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA RF195 UT WOS:A1995RF19500012 ER PT J AU FRATINI, AV CHABINYC, ML PERKO, TJ ADAMS, WW AF FRATINI, AV CHABINYC, ML PERKO, TJ ADAMS, WW TI SYN AND ANTI ISOMERS OF [2.2]PARACYCLONAPHTHANE SO ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS LA English DT Article AB The structures of the anti (1) and syn (2) isomers of [2.2]paracyclonaphthane, C24H20, can be understood in terms of molecules composed of four segments, two naphthalene rings and two ethylene groups bridging the naphthalene rings. Distortions from ideal geometries are described and attributed primarily to intramolecular effects. Several observations have been made: the bridged portion of the naphthalene ring is deformed into a boat shape in both (1) and (2); much of the pi-pi repulsion is taken up by bending angles alpha and beta; the naphthalene rings are parallel to each other in (1), but are nonparallel in (2); one naphthalene ring in (2) is twisted relative to the other, indicating a mode of strain reduction which is unique to this molecule, and the C-C distances and valency angles in the ethylene bridges are larger than normal values. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP FRATINI, AV (reprint author), UNIV DAYTON,DEPT CHEM,300 COLL PK,DAYTON,OH 45469, USA. RI Chabinyc, Michael/E-2387-2011; Adams, Wade/A-7305-2010 NR 9 TC 6 Z9 6 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0108-2701 J9 ACTA CRYSTALLOGR C JI Acta Crystallogr. Sect. C-Cryst. Struct. Commun. PD MAY 15 PY 1995 VL 51 BP 904 EP 908 DI 10.1107/S0108270194009959 PN 5 PG 5 WC Chemistry, Multidisciplinary; Crystallography SC Chemistry; Crystallography GA RB595 UT WOS:A1995RB59500045 ER PT J AU HALLIBURTON, LE EDWARDS, GJ SCRIPSICK, MP RAKOWSKY, MH SCHUNEMANN, PG POLLAK, TM AF HALLIBURTON, LE EDWARDS, GJ SCRIPSICK, MP RAKOWSKY, MH SCHUNEMANN, PG POLLAK, TM TI ELECTRON-NUCLEAR DOUBLE-RESONANCE OF THE ZINC VACANCY IN ZNGEP2 SO APPLIED PHYSICS LETTERS LA English DT Article C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. LOCKHEED SANDERS,NASHUA,NH 03061. RP HALLIBURTON, LE (reprint author), W VIRGINIA UNIV,DEPT PHYS,MORGANTOWN,WV 26506, USA. NR 9 TC 45 Z9 47 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 15 PY 1995 VL 66 IS 20 BP 2670 EP 2672 DI 10.1063/1.113120 PG 3 WC Physics, Applied SC Physics GA QY400 UT WOS:A1995QY40000023 ER PT J AU EVWARAYE, AO SMITH, SR MITCHEL, WC AF EVWARAYE, AO SMITH, SR MITCHEL, WC TI KINETICS OF SLOW BUILDUP OF PHOTOCONDUCTANCE IN N-TYPE 6H-SIC SO APPLIED PHYSICS LETTERS LA English DT Article ID PERSISTENT PHOTOCONDUCTIVITY; GROWTH; CARBIDE; WAFERS; MODEL RP EVWARAYE, AO (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 22 TC 10 Z9 10 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 15 PY 1995 VL 66 IS 20 BP 2691 EP 2693 DI 10.1063/1.113490 PG 3 WC Physics, Applied SC Physics GA QY400 UT WOS:A1995QY40000030 ER PT J AU ONGSTAD, AP GALLANT, DJ DENTE, GC AF ONGSTAD, AP GALLANT, DJ DENTE, GC TI CARRIER LIFETIME SATURATION IN INGAAS SINGLE QUANTUM-WELLS SO APPLIED PHYSICS LETTERS LA English DT Article ID RECOMBINATION RATES; LASERS; AUGER RP ONGSTAD, AP (reprint author), USAF,PHILLIPS LAB,550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 12 TC 20 Z9 21 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD MAY 15 PY 1995 VL 66 IS 20 BP 2730 EP 2732 DI 10.1063/1.113690 PG 3 WC Physics, Applied SC Physics GA QY400 UT WOS:A1995QY40000043 ER PT J AU HE, GS GVISHI, R PRASAD, PN REINHARDT, BA AF HE, GS GVISHI, R PRASAD, PN REINHARDT, BA TI 2-PHOTON ABSORPTION BASED OPTICAL LIMITING AND STABILIZATION IN ORGANIC MOLECULE-DOPED SOLID MATERIALS SO OPTICS COMMUNICATIONS LA English DT Article ID SEMICONDUCTORS; BEHAVIOR; PULSES AB Optical limiting and stabilization via two-photon absorption (TPA) in organic molecule-doped solid materials have been investigated. The nonlinear materials are epoxy rod and a composite glass rod doped with the same organic dopant (2,5-benzothiazole 3,4-didecyloxy thiophene). An ultrashort laser source with 0.5 ps pulsewidth and 602 nm wavelength was employed. The transmissivity of these two materials has been measured as a function of the input beam intensity. The measured results can be well fitted based on the assumption that TPA is the predominant mechanism producing the observed optical limiting behavior. Also, optical stabilization behavior is observed, and, at approximately 930 MW/cm2 input intensity level, the output intensity fluctuation is three times less than the input intensity fluctuation. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. RP HE, GS (reprint author), SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14260, USA. NR 12 TC 139 Z9 147 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD MAY 15 PY 1995 VL 117 IS 1-2 BP 133 EP 136 DI 10.1016/0030-4018(95)00097-R PG 4 WC Optics SC Optics GA QZ356 UT WOS:A1995QZ35600025 ER PT J AU SZMULOWICZ, F BROWN, GJ AF SZMULOWICZ, F BROWN, GJ TI CALCULATION AND PHOTORESPONSE MEASUREMENT OF THE BOUND-TO-CONTINUUM INFRARED-ABSORPTION IN P-TYPE GAAS/ALXGA1-XAS QUANTUM-WELLS SO PHYSICAL REVIEW B LA English DT Article ID HOLE INTERSUBBAND ABSORPTION; MU-M; PHOTODETECTORS; SUBBANDS; BAND C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP SZMULOWICZ, F (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 36 TC 65 Z9 66 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD MAY 15 PY 1995 VL 51 IS 19 BP 13203 EP 13220 DI 10.1103/PhysRevB.51.13203 PG 18 WC Physics, Condensed Matter SC Physics GA QZ165 UT WOS:A1995QZ16500033 ER PT J AU WESTRICK, M AF WESTRICK, M TI BLOOD IN THE LAB SO SCIENTIST LA English DT Letter RP WESTRICK, M (reprint author), USAF,MED SUPPORT SQUADRON 11,CLIN LAB SERV,BOLLING AFB,DC 20332, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU SCIENTIST INC PI PHILADELPHIA PA 3600 MARKET ST SUITE 450, PHILADELPHIA, PA 19104 SN 0890-3670 J9 SCIENTIST JI Scientist PD MAY 15 PY 1995 VL 9 IS 10 BP 12 EP 12 PG 1 WC Information Science & Library Science; Multidisciplinary Sciences SC Information Science & Library Science; Science & Technology - Other Topics GA QY335 UT WOS:A1995QY33500011 ER PT J AU BALSONE, SJ WORTH, BD LARSEN, JM JONES, JW AF BALSONE, SJ WORTH, BD LARSEN, JM JONES, JW TI FRACTOGRAPHIC STUDY OF FATIGUE-CRACK GROWTH-PROCESSES IN A FULLY LAMELLAR GAMMA-TIAL ALLOY SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID TEMPERATURE; RESISTANCE C1 UNIV MICHIGAN,ANN ARBOR,MI 48109. RP BALSONE, SJ (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 24 Z9 25 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD MAY 15 PY 1995 VL 32 IS 10 BP 1653 EP 1658 DI 10.1016/0956-716X(95)00250-Y PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QX018 UT WOS:A1995QX01800024 ER PT J AU WANG, ZQ DAY, PN PACHTER, R AF WANG, ZQ DAY, PN PACHTER, R TI A DENSITY-FUNCTIONAL AND HARTREE-FOCK STUDY OF PYRAN AND 2,4-PENTADIENALS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID LOCAL-DENSITY; POLYATOMIC-MOLECULES; ELECTRON; POLY(SPIROPYRAN-L-GLUTAMATE); THERMOCHEMISTRY; POLYMERS; ENERGIES AB The geometries and vibrational frequencies of pyran and its variants obtained by ring dissociation at the C-O bond (2,4-pentadienals) are studied using density functional theory (DFT; VWN, BLYP) and Hartree-Fock (HF; 6-31G(d), MP2//6-31G(d)) calculations. The BLYP, 6-31G(d) and MP2//6-31G(d) geometry optimizations predict an open form as the most stable configuration, while VWN determines the cyclic form to be most stable. DFT calculations of the vibrational frequencies of 2,4-pentadienal are in good agreement with IR data, favoring the conformer identified by our energy calculations. RP WANG, ZQ (reprint author), WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 30 TC 11 Z9 11 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 EI 1873-4448 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD MAY 5 PY 1995 VL 237 IS 1-2 BP 45 EP 52 DI 10.1016/0009-2614(95)00268-9 PG 8 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QW527 UT WOS:A1995QW52700008 ER PT J AU OLSON, DL FLIEDNER, G CURRIE, K AF OLSON, DL FLIEDNER, G CURRIE, K TI COMPARISON OF THE REMBRANDT SYSTEM WITH ANALYTIC HIERARCHY PROCESS SO EUROPEAN JOURNAL OF OPERATIONAL RESEARCH LA English DT Article DE MULTIPLE CRITERIA DECISION MAKING; ANALYTIC HIERARCHY PROCESS (AHP); GROUP DECISION SUPPORT SYSTEMS ID AHP; ALTERNATIVES; JUDGEMENTS; MATRICES; WEIGHTS AB This study compared the use of the REMBRANDT system to analytic hierarchy process (AHP) in a group multiple criteria selection problem. The decision was to select an operations management text, and the decision was the responsibility of a faculty group. The primary purpose of this study is to apply REMBRANDT to the same problem that was supported by AHP. There are no noticeable differences between the techniques from the perspective of the users, as the same input is used. Important technical differences between AHP and REMBRANDT are demonstrated, including (1) different ratio input scales, (2) alternative calculation of impact scores, and (3) a different aggregation procedure. REMBRANDT was found to recommend the same decision as AHP when the geometric mean was used for aggregation, but a different decision was given by conventional AHP using arithmetic mean aggregation. C1 USAF,INST TECHNOL,DAYTON,OH. RP OLSON, DL (reprint author), TEXAS A&M UNIV,DEPT BUSINESS ANAL & RES,COLLEGE STN,TX 77843, USA. NR 22 TC 24 Z9 25 U1 3 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0377-2217 J9 EUR J OPER RES JI Eur. J. Oper. Res. PD MAY 4 PY 1995 VL 82 IS 3 BP 522 EP 539 DI 10.1016/0377-2217(93)E0340-4 PG 18 WC Management; Operations Research & Management Science SC Business & Economics; Operations Research & Management Science GA QQ983 UT WOS:A1995QQ98300009 ER PT J AU SULEMAN, A MODI, VJ VENKAYYA, VB AF SULEMAN, A MODI, VJ VENKAYYA, VB TI STRUCTURAL MODELING ISSUES IN FLEXIBLE SYSTEMS SO AIAA JOURNAL LA English DT Article AB This paper has the purpose of bringing to Light flexibility modeling aspects in connection with multibody dynamic simulation. Toward this end, an examination is made of fundamental issues that arise when one seeks to formulate equations of motion to be used for the dynamics and control simulation of flexible structures. Comparative analyses between component and system modal discretization techniques are presented in the context of multibody flexible systems. RP SULEMAN, A (reprint author), USAF,WRIGHT LAB,NATL RES COUNCIL,FIBAD,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 6 TC 1 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD MAY PY 1995 VL 33 IS 5 BP 919 EP 923 DI 10.2514/3.12772 PG 5 WC Engineering, Aerospace SC Engineering GA QY557 UT WOS:A1995QY55700019 ER PT J AU CHEN, TH HANCOCK, RD AF CHEN, TH HANCOCK, RD TI 2-DIMENSIONAL SHEAR-LAYER ENTRAINMENT AND INTERFACE-LENGTH MEASUREMENTS SO AIAA JOURNAL LA English DT Note C1 SYST RES LABS INC,DIV RES APPLICAT,DAYTON,OH 45440. USAF,WRIGHT LAB,DIV FUEL & COMBUST,WRIGHT PATTERSON AFB,OH 45433. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD MAY PY 1995 VL 33 IS 5 BP 949 EP 950 DI 10.2514/3.12359 PG 2 WC Engineering, Aerospace SC Engineering GA QY557 UT WOS:A1995QY55700026 ER PT J AU JOHNSEN, FA AF JOHNSEN, FA TI FOR THE DURATION + EVIDENCE IN OUR PRESENT LIVES OF THE PASSING OF WORLD-WAR-2 SO AMERICAN HERITAGE LA English DT Article RP JOHNSEN, FA (reprint author), USAF,AIR FORCE FLIGHT TEST CTR,EDWARDS AFB,CA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER HERITAGE SUBSCRIPTION DEPT PI NEW YORK PA FORBES BUILDING 60 FIFTH AVE, NEW YORK, NY 10011 SN 0002-8738 J9 AM HERITAGE JI Am. Herit. PD MAY-JUN PY 1995 VL 46 IS 3 BP 90 EP 93 PG 4 WC History SC History GA QU583 UT WOS:A1995QU58300013 ER PT J AU VIDELA, FL SATIN, AJ BARTH, WH HANKINS, GDV AF VIDELA, FL SATIN, AJ BARTH, WH HANKINS, GDV TI TRIAL OF LABOR - A DISCIPLINED APPROACH TO LABOR-MANAGEMENT RESULTING IN A HIGH-RATE OF VAGINAL DELIVERY SO AMERICAN JOURNAL OF PERINATOLOGY LA English DT Article DE TRIAL OF LABOR; CESAREAN SECTION; LABOR MANAGEMENT DYSTOCIA; OXYTOCIN AB A disciplined approach to labor management has resulted in a low cesarean rate (9%) in our population. We wondered ii this management scheme was applicable and safe applied to women with previous cesareans. Women with a previous cesarean delivering in a 5-year period were included. Labor management included encouragement of trial of labor, labor stimulation with oxytocin when indicated, epidural analgesia only after entering the active phase, and continuous monitoring. Demographic, labor and delivery, and neonatal data were electronically stored and analysis performed using SPSS release 4.1 for VAX/VMS. Statistical analysis was performed using chi-square and Fisher's exact test where appropriate. Multiple logistic regression was performed to control for potentially confounding variables. A previous cesarean had been performed in 713 (11%) gravidas who met the inclusion criteria. Vaginal delivery was attempted in 588 (82%) and 517 (88%) achieved vaginal birth. Older women (14 versus 1 versus 8%, p=0.04), of higher parity (63 versus 35 versus 17%, p=0.0001), requiring preterm delivery (14 versus 8 versus 4%) were more likely to have an elective repeat cesarean than a successful or failed trial of labor. Pregnancies requiring oxytocin (90 versus 53%, p=0.02), receiving epidural analgesia (62 versus 49%, p=0.05), developing chorioamnionitis (20 versus 4%, p<0.0001) were more likely to fail a trial of labor. Four uterine ruptures occurred and only one patient was receiving oxytocin. There were no differences in umbilical artery blood acidemia among elective repeat cesarean sections and successful or failed trial of labor. The disciplined approach to labor management used was successful in achieving a low cesarean rate (12%) in women undergoing a trial of labor without adverse neonatal outcomes. C1 WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,PSO,LACKLAND AFB,TX 78236. NR 0 TC 13 Z9 13 U1 0 U2 0 PU THIEME MEDICAL PUBL INC PI NEW YORK PA 381 PARK AVE SOUTH, NEW YORK, NY 10016 SN 0735-1631 J9 AM J PERINAT JI Am. J. Perinatol. PD MAY PY 1995 VL 12 IS 3 BP 181 EP 184 DI 10.1055/s-2007-994447 PG 4 WC Obstetrics & Gynecology; Pediatrics SC Obstetrics & Gynecology; Pediatrics GA QY134 UT WOS:A1995QY13400008 PM 7612091 ER PT J AU BRUCE, SL GROVE, SK AF BRUCE, SL GROVE, SK TI THE EFFECT OF A CORONARY-ARTERY RISK-EVALUATION PROGRAM ON SERUM-LIPID VALUES AND CARDIOVASCULAR RISK LEVELS SO APPLIED NURSING RESEARCH LA English DT Article ID HEART-DISEASE; CHOLESTEROL AB In this study, serum lipid and cardiovascular risk levels of 195 military men and women were measured immediately before and 6 months after participation in a coronary artery risk evaluation (C.A.R.E.) program. Mean total cholesterol levels decreased from 257 mg/dl to 223 mg/dl (t((194)) = - 16.76, p = 0.00), low-density lipoprotein levels decreased from 170 mg/dl to 141 mg/dl (t((194)) = - 15,22, p = 0.00), and high-density lipoprotein levels increased from 45 mg/dl to 48 mg/dl(t((194)) = 3.27, p = 0.01). Cardiovascular risk categories (based on serum lipid levels) were lowered from high to moderate risk in 54 subjects, high to low risk in 19 subjects, and moderate to low risk in 31 subjects (chi(2) = 98.28, P = 0.00). This study demonstrates that health education programs such as the C.A.R.E. Program can have a significant impact on serum lipid levels and cardiovascular risk levels and can potentially improve the health of high-risk populations. This is a U.S, government work. There are no restrictions on its ase. C1 UNIV TEXAS,SCH NURSING,ARLINGTON,TX. RP BRUCE, SL (reprint author), USAF,NURSE CORPS,NTOE,MED TRAINING SQUADRON 383,939 MISSILE RD,SUITE 3,SHEPPARD AFB,TX 76311, USA. NR 23 TC 1 Z9 1 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0897-1897 J9 APPL NURS RES JI Appl. Nurs. Res. PD MAY PY 1995 VL 7 IS 2 BP 67 EP 74 PG 8 WC Nursing SC Nursing GA RA745 UT WOS:A1995RA74500004 ER PT J AU MAIR, EA BOLGER, WE BREISCH, EA AF MAIR, EA BOLGER, WE BREISCH, EA TI SINUS AND FACIAL GROWTH AFTER PEDIATRIC ENDOSCOPIC SINUS SURGERY SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article ID FRACTURES; CHILDREN AB Objective: To determine the effect of functional endoscopic sinus surgery (FESS) on facial skeletal growth in children. Design: Prospective randomized controlled animal study; retrospective histopathologic study of pediatric FESS specimens. Setting: Academic tertiary referral medical center. Participants: Eight newly weaned piglets; uncinate and ethmoid bone of FESS specimens from 84 children. Interventions: The piglets underwent unilateral FESS. When they had developed to nearly adult size, computed tomography was used to compare facial and sinus development between the surgical and nonsurgical sides. The paranasal sinus contents from children were histologically examined to analyze bone types with respect to patient age. Outcome Measures: Sinus development and facial skeletal growth after FESS in piglets; histologic maturity of sinus bone in children. Results: Facial growth in piglets was significantly reduced on the side treated by FESS. When compared with the side that did not undergo the operation, growth reached only 57% in the maxillary sinus and 65% in the ethmoid region. Children younger than 9 years had woven (immature) bone; children 9 years and older had predominantly lamellar (mature) bone. Conclusions: This preliminary study shows that even limited surgery in the anterior ethmoid region can affect sinus and facial growth in the piglet. Review of corresponding human histologic specimens suggests that further investigation is warranted to rule out the possibility of facial and sinus growth disturbance after this surgery in children. C1 WILFORD HALL USAF MED CTR,CLIN INVEST FACIL,SAN ANTONIO,TX 78236. WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL,SAN ANTONIO,TX 78236. CHILDRENS HOSP & HLTH CTR,DEPT PATHOL,SAN DIEGO,CA. NR 17 TC 64 Z9 65 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0886-4470 J9 ARCH OTOLARYNGOL JI Arch. Otolaryngol. Head Neck Surg. PD MAY PY 1995 VL 121 IS 5 BP 547 EP 552 PG 6 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA QX416 UT WOS:A1995QX41600008 PM 7727089 ER PT J AU BERG, JM KWATNY, HG AF BERG, JM KWATNY, HG TI A CANONICAL PARAMETERIZATION OF THE KRONECKER FORM OF A MATRIX PENCIL SO AUTOMATICA LA English DT Article DE ZEROS; SINGULARITIES; UNFOLDINGS; STRUCTURAL STABILITY; BIFURCATION; VERSAL DEFORMATION ID LINEAR-MULTIVARIABLE SYSTEMS; SINGULAR PENCIL; EQUIVALENCE; INVARIANTS AB ne Kronecker form is the classical canonical form for matrix pencils under strict equivalence transformation. Consider a matrix pencil whose entries are smooth functions of a parameter vector. The Kronecker form of the parameterized pencil will, in general, be a discontinuous function of the parameters. For a linear time-invariant control system these discontinuities correspond to a change in the finite and infinite invariant zero structure. Since many control strategies require knowledge of, or place restrictions on, the zero structure, these points of discontinuity are of considerable interest, In this paper a general approach to the study of such points is developed in the framework of singularity theory. We derive a 'miniversal' parameterization of a given pencil. That is, a parameterized family of pencils that: (i) includes the given pencil, (ii) is locally equivalent to any other family up to a change of parameters, and (iii) uses the fewest number of parameters to achieve this property. All 'nearby' zero structures can be obtained by varying parameter values in the miniversal parameterization. From all miniversal parameterizations, one having a particularly uncluttered representation is selected as canonical. However, some restrictions on the finite elementary divisors are then required. C1 USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP BERG, JM (reprint author), DREXEL UNIV,DEPT MECH ENGN & MECH,PHILADELPHIA,PA 19104, USA. NR 26 TC 12 Z9 12 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0005-1098 J9 AUTOMATICA JI Automatica PD MAY PY 1995 VL 31 IS 5 BP 669 EP 680 DI 10.1016/0005-1098(94)00111-U PG 12 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA RA520 UT WOS:A1995RA52000001 ER PT J AU BUTLER, BD ROBINSON, R SUTTON, T KEMPER, GB AF BUTLER, BD ROBINSON, R SUTTON, T KEMPER, GB TI CARDIOVASCULAR PRESSURES WITH VENOUS GAS EMBOLISM AND DECOMPRESSION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID PATENT FORAMEN OVALE; PARADOXICAL AIR-EMBOLISM; TRANSESOPHAGEAL ECHOCARDIOGRAPHY; CONTRAST ECHOCARDIOGRAPHY; PULMONARY CIRCULATION; SITTING POSITION; BUBBLES; PREVALENCE; PASSAGE; SHUNT AB Venous gas embolism (VGE) is reported with decompression to a decreased ambient pressure, With severe decompression, or in cases where an intracardiac septal defect (patent foramen ovals) exists, the venous bubbles can become arterialized and cause neurological decompression illness. Incidence rates of patent foramen ovale in the general population range from 25-34% and yet aviators, astronauts, and deepsea divers who have decompression-induced venous bubbles do not demonstrate neurological symptoms at these high rates. This apparent disparity may be attributable to the normal pressure gradient across the atria of the heart that must be reversed for there to be flow patency. We evaluated the effects of: a)venous gas embolism (0.025, 0.05 and 0.15 ml . kg(-1). min(-1) for 180 min.); b) hyperbaric decompression; and c) hypobaric decompression on the pressure gradient across the left and right atria In anesthetized dogs with intact atrial septa. Left ventricular end-diastolic pressure was used as a measure of left atrial pressure. In a total of 92 experimental evaluations in 22 dogs, there were no reported reversals in the mean pressure gradient across the atria; a total of 3 transient reversals occurred during the peak pressure gradient changes. The reasons that decompression-induced venous bubbles do not consistently cause serious symptoms of decompression illness may be that the amount of venous gas does not always cause sufficient pressure reversal across a patent foramen ovals to cause arterialization of the venous bubbles. C1 ARMSTRONG LAB,AFMC,BROOKS AFB,TX. RP BUTLER, BD (reprint author), UNIV TEXAS,SCH MED,DEPT ANESTHESIOL,6431 FANNIN,MSB 5020,HOUSTON,TX 77030, USA. NR 32 TC 9 Z9 12 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1995 VL 66 IS 5 BP 408 EP 414 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QX391 UT WOS:A1995QX39100002 PM 7619032 ER PT J AU ROTHFUSS, SI AF ROTHFUSS, SI TI MY FIRST FLIGHT - THE BEIRUT EXPERIENCE SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Editorial Material RP ROTHFUSS, SI (reprint author), USAF,NC,60TH MED GP SGNSC,101 BODIN CIRCLE,TRAVIS AFB,CA 94535, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD MAY PY 1995 VL 66 IS 5 BP 459 EP 460 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QX391 UT WOS:A1995QX39100012 ER PT J AU PORTER, DB AF PORTER, DB TI COMPUTER GAMES - PARADIGMS OF OPPORTUNITY SO BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS LA English DT Article ID 2 MODES; TASKS AB Computer games offer unique opportunities to apply unobtrusive constraints to action that permit meaningful analysis without destroying the integrity of the game itself. To a much greater extent than most traditional laboratory tasks, computer games represent holistic, meaningful, and natural human activity. Considerable concern about the appropriate analysis and interpretation of results, however, remains. One strategy that addresses these concerns involves the adoption of separate but convergent analytic perspectives. This article suggests that three such perspectives (viz., the objective, the subjective, and the empirical) can be combined to provide the necessary logical leverage to allow meaningful research. Alternative analyses of data collected from the playing of a particular arcade-type computer game are used to illustrate this point. RP PORTER, DB (reprint author), USAF ACAD,DEPT BEHAV SCI,COLORADO SPRINGS,CO 80840, USA. NR 30 TC 11 Z9 11 U1 2 U2 2 PU PSYCHONOMIC SOC INC PI AUSTIN PA 1710 FORTVIEW RD, AUSTIN, TX 78704 SN 0743-3808 J9 BEHAV RES METH INSTR JI Behav. Res. Methods Instr. Comput. PD MAY PY 1995 VL 27 IS 2 BP 229 EP 234 DI 10.3758/BF03204737 PG 6 WC Psychology, Mathematical; Psychology, Experimental SC Psychology GA RB503 UT WOS:A1995RB50300028 ER PT J AU ROKICKI, SM AF ROKICKI, SM TI PSYCHOPHYSIOLOGICAL MEASURES APPLIED TO OPERATIONAL TEST AND EVALUATION SO BIOLOGICAL PSYCHOLOGY LA English DT Article DE APPLICATION OF PSYCHOPHYSIOLOGICAL MEASURES; RATIONALE FOR USE; COST BENEFIT; TEST AND EVALUATION AB Psychophysiological measures have the potential to supplement and eventually replace subjective measures in determining fatigue and workload in military and commercial systems during test and evaluation. With the advances in equipment (such as miniaturization) over the last decade, the use of various psychophysiological methods, particularly electroencephalography (EEG), has become more feasible in operational settings. Accompanying this capability is the necessity to develop valid methodology and ensure consistent results within individuals and similar situations using relatively automatic analysis and presenting the results in non-specialist terms. This paper reviews the rationale for using psychophysiological metrics, particularly EEG, during the test and evaluation process, and discusses the requirements for its use and acceptance by decision-makers and subjects. The comments in this paper are based on 14 years of observation. C1 USAF,CTR OPERAT TEST & EVALUAT,KIRTLAND AFB,NM 87117. NR 0 TC 4 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0511 J9 BIOL PSYCHOL JI Biol. Psychol. PD MAY PY 1995 VL 40 IS 1-2 BP 223 EP 228 DI 10.1016/0301-0511(95)05113-9 PG 6 WC Psychology, Biological; Behavioral Sciences; Psychology; Psychology, Experimental SC Psychology; Behavioral Sciences GA RB501 UT WOS:A1995RB50100016 PM 7647183 ER PT J AU HAAS, MW AF HAAS, MW TI VIRTUALLY-AUGMENTED INTERFACES FOR TACTICAL AIRCRAFT SO BIOLOGICAL PSYCHOLOGY LA English DT Article DE VIRTUALLY-AUGMENTED INTERFACES; FUSION INTERFACE; TACTICAL ENVIRONMENTS FACILITY AB The term Fusion Interface is defined as a class of interface which integrally incorporates both virtual and non-virtual concepts and devices across the visual, auditory and haptic sensory modalities. A fusion interface is a multi-sensory virtually-augmented synthetic environment. A new facility has been developed within the Human Engineering Division of the Armstrong Laboratory dedicated to exploratory development of fusion-interface concepts. One of the virtual concepts to be investigated in the Fusion Interfaces for Tactical Environments facility (FITE) is the application of EEG and other physiological measures for virtual control of functions within the flight environment. FITE is a specialized flight simulator which allows efficient concept development through the use of rapid prototyping followed by direct experience of new fusion concepts. The FITE facility also supports evaluation of fusion concepts by operational fighter pilots in a high fidelity simulated air combat environment. The facility was utilized by a multi-disciplinary team composed of operational pilots, human-factors engineers, electronics engineers, computer scientists, and experimental psychologists to prototype and evaluate the first multi-sensory, virtually-augmented cockpit. The cockpit employed LCD-based head-down displays, a helmet-mounted display, three-dimensionally localized audio displays, and a haptic display. This paper will endeavor to describe the FITE facility architecture, some of the characteristics of the FITE virtual display and control devices, and the potential application of EEG and other physiological measures within the FITE facility. RP HAAS, MW (reprint author), CFHP,AL,2255 H ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 28 TC 6 Z9 6 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0511 J9 BIOL PSYCHOL JI Biol. Psychol. PD MAY PY 1995 VL 40 IS 1-2 BP 229 EP 238 DI 10.1016/0301-0511(95)05112-0 PG 10 WC Psychology, Biological; Behavioral Sciences; Psychology; Psychology, Experimental SC Psychology; Behavioral Sciences GA RB501 UT WOS:A1995RB50100017 PM 7647184 ER PT J AU WILSON, GF FISHER, F AF WILSON, GF FISHER, F TI COGNITIVE TASK CLASSIFICATION BASED UPON TOPOGRAPHIC EEG DATA SO BIOLOGICAL PSYCHOLOGY LA English DT Article DE EEG; TASK CLASSIFICATION; DISCRIMINANT ANALYSIS; COGNITION; TASK DIFFICULTY ID BRAIN AB EEG from 19 electrodes was used to classify which of 14 tasks each of seven subjects had performed. Stepwise discriminant analysis (SWDA) was used to classify the tasks based upon training on one half of the spectrally analyzed 1 min of data. Eighty six percent correct classification was achieved using principle components analysis (PCA) to determine the EEG bands to be used by the SWDA. Other approaches to deriving the EEG bands met with lower levels of success. The results indicate that frequency and topographical information about the EEG provides useful knowledge with regard to the nature of cognitive activity. Higher frequencies provided much of the information used by the classifier. The utility of this approach is discussed with regard to evaluating operator state in the work environment. C1 AOCR,ARMSTRONG LAB,DIV CHEM SCI,RES COORDINAT BRANCH,BROOKS AFB,TX. RP WILSON, GF (reprint author), CFHP,ARMSTRONG LAB,DIV HUMAN ENGN,PERFORMANCE ASSESSMENT BRANCH,2255 H ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 46 Z9 48 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0511 J9 BIOL PSYCHOL JI Biol. Psychol. PD MAY PY 1995 VL 40 IS 1-2 BP 239 EP 250 DI 10.1016/0301-0511(95)05102-3 PG 12 WC Psychology, Biological; Behavioral Sciences; Psychology; Psychology, Experimental SC Psychology; Behavioral Sciences GA RB501 UT WOS:A1995RB50100018 PM 7647185 ER PT J AU WILSON, GF AF WILSON, GF TI EEG IN BASIC AND APPLIED SETTINGS - PREFACE SO BIOLOGICAL PSYCHOLOGY LA English DT Editorial Material RP WILSON, GF (reprint author), USAF,CFHP,ARMSTRONG LAB,2255 H ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0301-0511 J9 BIOL PSYCHOL JI Biol. Psychol. PD MAY PY 1995 VL 40 IS 1-2 BP R7 EP R8 DI 10.1016/0301-0511(95)90013-6 PG 2 WC Psychology, Biological; Behavioral Sciences; Psychology; Psychology, Experimental SC Psychology; Behavioral Sciences GA RB501 UT WOS:A1995RB50100001 ER PT J AU PAN, H GAO, XL ZHANG, Y PRASAD, PN REINHARDT, B KANNAN, R AF PAN, H GAO, XL ZHANG, Y PRASAD, PN REINHARDT, B KANNAN, R TI A NEW CLASS OF HETEROCYCLIC-COMPOUNDS FOR NONLINEAR OPTICS SO CHEMISTRY OF MATERIALS LA English DT Article ID AROMATIC-COMPOUNDS; DIPOLE-MOMENT; HYPERPOLARIZABILITIES; MOLECULES; 2ND AB We discuss both theoretically and experimentally a new class of second-order nonlinear optical materials which utilizes the coupling of electron-rich and electron-deficient aromatic heterocyclic units to provide the charge asymmetry necessary for the nonlinear optical effect. This new class of nonlinear optical materials as compared with the previously known materials has the following merits: (i) wide optical transparency, high molecular nonlinear coefficient and small dipole moment; (ii) independent manipulation of the nonlinear coefficient and ground-state dipole moment by using multiple heterocyclic (oligomeric) units or appropriately modified heterocycles as well as by varying the linkage position; (iii) potentially greater thermal stability of the heterocyclic units; (iv) the potential for greatly reduced chemical toxicity. C1 USAF,WRIGHT LAB,POLYMER BRANCH MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. ADTECH SYST RES,DAYTON,OH 45432. RP PAN, H (reprint author), SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14260, USA. NR 24 TC 44 Z9 46 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD MAY PY 1995 VL 7 IS 5 BP 816 EP 821 DI 10.1021/cm00053a002 PG 6 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA QY899 UT WOS:A1995QY89900002 ER PT J AU FULLER, J CARLIN, RT SIMPSON, LJ FURTAK, TE AF FULLER, J CARLIN, RT SIMPSON, LJ FURTAK, TE TI INCORPORATION OF IMIDAZOLIUM CATIONS INTO AN ENANTIOMERIC TARTRATE HOST LATTICE - DESIGNING NEW NONLINEAR-OPTICAL MATERIALS SO CHEMISTRY OF MATERIALS LA English DT Article ID 2ND HARMONIC-GENERATION; CRYSTAL-STRUCTURE; 2ND-HARMONIC GENERATION; MOLECULAR RECOGNITION; SOLID-STATE; SALTS; PHOSPHATE; ACID AB A series of salts with nonlinear optical properties were synthesized using a single enantiomer of the tartrate anion to construct a host lattice for various imidazolium guest cations. The enantiomeric nature of the tartrate host lattice ensures a noncentrosymmetric salt structure and provides an efficient synthetic route to novel frequency-doubling materials. X-ray single-crystal structures, second harmonic generation (SHG) efficiencies, and refractive indexes were determined for seven such salts having different ring substitutions on the imidazolium guest molecule. Second harmonic generation efficiencies for the seven salts range from 0.3 to 2.2 times that of d-tartaric acid alone; thus, the imidazolium guest provides a distinct contribution to the total SHG response. A salient feature observed in the crytal structure of all salts is the extensive hydrogen bonding between tartrate units, forming a cross-linked tartrate chain lattice, and between the imidazolium guest and the tartrate host lattice. In addition, structural correlation to the nonlinear optical response shows that higher SHG efficiencies are realized when the imidazolium molecular plane is oriented in a parallel fashion to the tartrate chains. C1 COLORADO SCH MINES, DEPT PHYS, GOLDEN, CO 80401 USA. RP FULLER, J (reprint author), USAF ACAD, FRANK J SEILER RES LAB, 2354 VANDENBERG DR, SUITE 2A35, COLORADO SPRINGS, CO 80840 USA. NR 35 TC 20 Z9 20 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0897-4756 EI 1520-5002 J9 CHEM MATER JI Chem. Mat. PD MAY PY 1995 VL 7 IS 5 BP 909 EP 919 DI 10.1021/cm00053a016 PG 11 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA QY899 UT WOS:A1995QY89900016 ER PT J AU VANBLARCUM, SC MILLER, JR RUSSELL, GL AF VANBLARCUM, SC MILLER, JR RUSSELL, GL TI HIGH-LATITUDE RIVER RUNOFF IN A DOUBLED CO2 CLIMATE SO CLIMATIC CHANGE LA English DT Article ID ATMOSPHERIC CO2; MODEL; SENSITIVITY; INCREASE; BASIN AB A global atmospheric model is used to calculate the monthly river flow for nine of the world's major high latitude rivers for the present climate and for a doubled CO2 climate. The model has a horizontal resolution of 4 degrees x 5 degrees, but the model's runoff from each grid box is quartered and added to the appropriate river drainage basin on a 2 degrees x 2.5 degrees resolution. A routing scheme is used to move runoff from a grid box to its neighboring downstream grid box and ultimately to the mouth of the river. In a model simulation in which atmospheric carbon dioxide is doubled, mean annual precipitation and river flow increase for all of these rivers, increased outflow at the river mouths begins earlier in the spring, and the maximum outflow occurs approximately one month sooner due to an earlier snow melt season. In the doubled CO2 climate, snow mass decreases for the Yukon and Mackenzie rivers in North America and for rivers in northwestern Asia, but snow mass increases for rivers in northeastern Asia. C1 RUTGERS STATE UNIV,COOK COLL,DEPT MARINE & COASTAL SCI,NEW BRUNSWICK,NJ 08903. NASA,GODDARD SPACE FLIGHT CTR,INST SPACE STUDIES,NEW YORK,NY 10025. RP VANBLARCUM, SC (reprint author), USAF,OSS 16,OGSW,HURLBURT FIELD,FL 32544, USA. NR 26 TC 12 Z9 12 U1 1 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0165-0009 J9 CLIMATIC CHANGE JI Clim. Change PD MAY PY 1995 VL 30 IS 1 BP 7 EP 26 PG 20 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA RC884 UT WOS:A1995RC88400002 ER PT J AU GAITONDE, D SHANG, JS AF GAITONDE, D SHANG, JS TI ON THE STRUCTURE OF AN UNSTEADY TYPE-IV INTERACTION AT MACH-8 SO COMPUTERS & FLUIDS LA English DT Article ID TVD SCHEMES; EQUATIONS AB The unsteady laminar how due to a Type IV shock-on-shock interaction at Mach 8 is examined with a flux-split scheme based on a modified Steger-Warming method. A sequence of meshes is utilized to perform a grid resolution study and the results are compared with available experimental data. The formulation is cell-centered finite-volume with second order accuracy obtained with the MUSCL approach in conjunction with a limiter to prevent unphysical spatial oscillations. Viscous terms are centrally differenced. The solution is advanced with implicit Gauss-Seidel line relaxation. The calculations indicate unsteady behavior on all meshes. The coherent structure of the asymptotic solution is examined. The impinging supersonic jet limit cycle exhibits a relatively regular oscillatory behavior with a dominant frequency of about 30 kHz. This is accompanied by sizeable movement of the terminating jet shock and associated variation in surface pressure and heat transfer rates. RP USAF, WRIGHT LAB, WL FIMC BLDG 450, 2645 5TH ST, STE 7, WRIGHT PATTERSON AFB, OH 45433 USA. NR 31 TC 12 Z9 16 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0045-7930 EI 1879-0747 J9 COMPUT FLUIDS JI Comput. Fluids PD MAY PY 1995 VL 24 IS 4 BP 469 EP 485 DI 10.1016/0045-7930(94)00028-W PG 17 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA QX702 UT WOS:A1995QX70200010 ER PT J AU BAIRD, RC JUMPER, GY AF BAIRD, RC JUMPER, GY TI ENCOUNTER MODELS AND DEEP-SEA FISHES - NUMERICAL SIMULATIONS AND THE MATE LOCATION PROBLEM IN STERNOPTYX DIAPHANA (PISCES, STERNOPTYCHIDAE) SO DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS LA English DT Article ID EASTERN GULF; SOUTHERN-CALIFORNIA; SEXUAL DIMORPHISM; MIDWATER FISHES; MEXICO; PATTERNS; MYCTOPHIDAE; REPRODUCTION; POPULATIONS; ENERGETICS AB Encounter models were used to simulate the mate location problem in the deep-sea hatchetfish Sternoptyx diaphana and other sparsely distributed meso- and bathypelagic fishes. For S. diaphana the local density of adult males varies considerably with time, depth and geographic location. It is the local density of males and their relative movement that are critical to female reproductive success. Over the range of male densities and mean swimming speeds expected in nature, encounter probabilities between adult males and females are exponentially related to the distance at which a mate is recognized (the perception distance). At the slow swim speeds and sparse population densities considered here, there are strong non-linearities in the relationship of male-female encounter probability to perception distance. In these threshold regions, small changes in perception distance result in relatively larger changes in encounter frequencies. At perception distances of less than 2 m, mean mate location times for females of S. diaphana are predicted by the model to be on the order of days and weeks and considerably longer for more sparsely distributed populations. Perception distances of from 4 to over 10 m are indicated in order to ensure mate location in S. diaphana within a day. Much longer perception distances are required for similar performance for the other populations considered. For sparsely distributed species like S. diaphana, low encounter frequencies can place limitations on net reproduction independent of the per capita resource base. Mechanisms that increase perception distances (e.g., olfaction) in deep sea fishes should be particularly effective in enhancing mate location. Bioluminescence may serve that purpose in S. diaphana. Irrespective of sensory modalities, at least one sex must maintain significant mean swim speed for considerable lengths of time to effect reproduction. The simulations also reveal the importance of scale and non-linearities in determining encounter frequencies among marine organisms. Encounter dynamics are in turn critical to various transfer functions and rates in oceanic ecosystems such as reproduction and predation. C1 USAF,DIV AEROSP ENGN,PHILLIPS LAB,BEDFORD,MA 01731. RP BAIRD, RC (reprint author), WORCESTER POLYTECH INST,DEPT BIOL & BIOTECHNOL,WORCESTER,MA 01609, USA. NR 76 TC 12 Z9 12 U1 1 U2 10 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0967-0637 J9 DEEP-SEA RES PT I JI Deep-Sea Res. Part I-Oceanogr. Res. Pap. PD MAY PY 1995 VL 42 IS 5 BP 675 EP 696 DI 10.1016/0967-0637(95)00022-X PG 22 WC Oceanography SC Oceanography GA RP133 UT WOS:A1995RP13300004 ER PT J AU STOLAR, MW AF STOLAR, MW TI CLINICAL MANAGEMENT OF THE NIDDM PATIENT - IMPACT OF THE AMERICAN-DIABETES-ASSOCIATION PRACTICE GUIDELINES, 1985-1993 SO DIABETES CARE LA English DT Article ID PHYSICIANS AB OBJECTIVE- To assess the impact of the American Diabetes Association's (ADA's) standards of care for patients with non-insulin-dependent diabetes mellitus (NIDDM) on practice patterns among university-based endocrine physicians and fellows. RESEARCH DESIGN AND METHODS- This study represents a retrospective chart-based review of 790 patients with NIDDM conducted by endocrine fellows in training at 42 academic institutions. By using an ADA guidelines-based questionnaire, patient management and adherence to the guidelines were assessed by reviewing charts dating greater than or equal to 3 years before, the year of, and 3 years after the guidelines' publication. All calculations were performed using the McNemar test, and all P values are two-sided. RESULTS- The ADA standards of care have not had the significant impact in the clinical training setting that was anticipated. Deficiencies were noted in all aspects of the diabetic patient encounter and did not improve significantly following publication of the guidelines, except in the areas of foot care, eye examination, and lipid screening. Major deficiencies exist in areas of quality assurance and chart documentation, and these did not improve over time. CONCLUSIONS- New strategies must be devised to increase awareness and implementation of these guidelines, both to enhance patient care and to improve the training of future diabetes caregivers. C1 NASSAU CTY MED CTR,E MEADOW,NY 11554. UNIV MED & DENT NEW JERSEY,ROBERT WOOD JOHNSON MED SCH,NEWARK,NJ 07103. UNIV CALIF LOS ANGELES,MED CTR,LOS ANGELES,CA 90024. LOYOLA UNIV,MED CTR,CHICAGO,IL. WAYNE STATE UNIV,SCH MED,DETROIT,MI 48202. CLEVELAND CLIN FDN,CLEVELAND,OH. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX. OREGON HLTH SCI UNIV,PORTLAND,OR. METROHLTH MED CTR,CLEVELAND,OH. BROWN UNIV,RHODE ISL HOSP,PROVIDENCE,RI. UNIV ALABAMA,BIRMINGHAM,AL. UNIV KENTUCKY,MED CTR,LEXINGTON,KY 40506. CEDARS SINAI MED CTR,LOS ANGELES,CA. MARSHALL UNIV,SCH MED,HUNTINGTON,WV. TUFTS UNIV NEW ENGLAND MED CTR,BOSTON,MA. UNIV MIAMI,SCH MED,CORAL GABLES,FL 33124. LOUISIANA STATE UNIV,MED CTR,NEW ORLEANS,LA. ST LOUIS UNIV,MED CTR,ST LOUIS,MO. SHADYSIDE HOSP,PITTSBURGH,PA. UNIV ARIZONA,TUCSON,AZ 85721. UNIV MINNESOTA,MINNEAPOLIS,MN. DUKE UNIV,MED CTR,DURHAM,NC 27706. TEMPLE UNIV,PHILADELPHIA,PA. INTERFAITH MED CTR,BROOKLYN,NY. UNIV SO CALIF,LOS ANGELES,CA 90089. UNIV MISSOURI,COLUMBIA,MO. GEORGETOWN UNIV,MED CTR,WASHINGTON,DC 20007. UNIV TEXAS,HLTH SCI CTR,HOUSTON,TX. MAINE MED CTR,PORTLAND,ME. INDIANA UNIV,BLOOMINGTON,IN 47405. UNIV MASSACHUSETTS,MED CTR,AMHERST,MA 01003. BETH ISRAEL HOSP,BOSTON,MA. HARVARD UNIV,BRIGHAM & WOMENS HOSP,SCH MED,BOSTON,MA. UNIV IOWA,IOWA CITY,IA 52242. UNIV ARKANSAS MED SCI HOSP,LITTLE ROCK,AR. JOHN L MCCLELLAN MEM VET ADM MED CTR,LITTLE ROCK,AR. LOUISIANA STATE UNIV,MED CTR,SHREVEPORT,LA. W LOS ANGELES VET AFFAIRS MED CTR,LOS ANGELES,CA 90073. UNIV KANSAS,MED CTR,LAWRENCE,KS 66045. UNIV TEXAS,MED BRANCH,GALVESTON,TX 77550. UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92103. CHICAGO MED CTR,CHICAGO,IL. UNIV CALIF DAVIS,DAVIS,CA 95616. PENN STATE UNIV,MILTON S HERSHEY MED CTR,HERSHEY,PA 17033. MED COLL WISCONSIN,MILWAUKEE,WI. TEMPLE UNIV HOSP & MED SCH,PHILADELPHIA,PA. BAYLOR COLL MED,HOUSTON,TX. SAN JUAN CITY HOSP,SAN JUAN,PR. NEW ENGLAND DEACONESS HOSP,JOSLIN DIABET CTR,BOSTON,MA. SUNY STONY BROOK,STONY BROOK,NY 11794. UNIV FLORIDA,HLTH SCI CTR,GAINESVILLE,FL 32611. OCHSNER MED FDN,NEW ORLEANS,LA. OHIO STATE UNIV HOSP,COLUMBUS,OH. EMORY UNIV,SCH MED,ATLANTA,GA. COLUMBIA UNIV,COLL PHYS & SURG,NEW YORK,NY 10027. UNIV WISCONSIN,MADISON,WI 53706. SCOTT & WHITE MEM HOSP & CLIN,TEMPLE,TX. HOSP UNIV PENN,PHILADELPHIA,PA. WAKE FOREST UNIV,BOWMAN GRAY SCH MED,WINSTON SALEM,NC. NORTHWESTERN UNIV,SCH MED,CHICAGO,IL. NR 9 TC 44 Z9 45 U1 1 U2 1 PU AMER DIABETES ASSOC PI ALEXANDRIA PA 1660 DUKE ST, ALEXANDRIA, VA 22314 SN 0149-5992 J9 DIABETES CARE JI Diabetes Care PD MAY PY 1995 VL 18 IS 5 BP 701 EP 707 DI 10.2337/diacare.18.5.701 PG 7 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA QW299 UT WOS:A1995QW29900017 PM 8586012 ER PT J AU RONNETT, BM KURMAN, RJ ZAHN, CM SHMOOKLER, BM JABLONSKI, KA KASS, ME SUGARBAKER, PH AF RONNETT, BM KURMAN, RJ ZAHN, CM SHMOOKLER, BM JABLONSKI, KA KASS, ME SUGARBAKER, PH TI PSEUDOMYXOMA-PERITONEI IN WOMEN - A CLINICOPATHOLOGICAL ANALYSIS OF 30 CASES WITH EMPHASIS ON SITE OF ORIGIN, PROGNOSIS, AND RELATIONSHIP TO OVARIAN MUCINOUS TUMORS OF LOW MALIGNANT POTENTIAL SO HUMAN PATHOLOGY LA English DT Article DE PSEUDOMYXOMA PERITONEI; MUCINOUS TUMOR OF LOW MALIGNANT POTENTIAL; APPENDICEAL ADENOMA; MUCINOUS ADENOCARCINOMA; APPENDIX; OVARY; PSEUDOMYXOMA OVARII ID CRYPT CELL-CARCINOMA; ADENOCARCINOID TUMOR; KRUKENBERG TUMOR; APPENDIX; METASTASES; BORDERLINE AB Pseudomyxoma peritonei (PMP) is a poorly understood condition characterized by the accumulation of abundant mucinous material within the peritoneal cavity and associated with a mucinous tumor of the gastrointestinal tract or ovaries. Recently there has been considerable debate over the primary site of origin of the tumor associated with PMP in women. Some investigators have proposed a primary site in the ovaries, whereas others favor the gastrointestinal tract or the peritoneum, Another confusing issue has been the nature of the ovarian mucinous tumors associated with PMP. Although these neoplasms may be frankly malignant, more often they show minimal cytologic atypia and epithelial proliferation and have been classified as borderline or low malignant potential tumors. In order to address the issues of site of origin and nature of the associated ovarian mucinous tumors, we studied 68 cases of PMP in women, 30 of whom had mucinous tumors involving the ovaries. All 30 of these cases had an associated mucinous appendiceal or intestinal tumor. The PMP cases with ovarian tumors were compared with 30 ovarian mucinous tumors of low malignant potential (LMP). Based on the analysis of the primary ovarian mucinous LMP tumors, a set of criteria was formulated and used to determine the probable site of origin of PMP in the 30 women with mucinous tumors involving the ovaries. The following gross and microscopic features of the ovarian tumor were considered to be inconsistent with a primary ovarian origin: (1) surface involvement with or without superficial stromal involvement only; (2) adenocarcinoma with signet ring cell differentiation, with a previously diagnosed or concurrent appendiceal tumor of similar morphology; (3) bilateral adenocarcinoma consistent with colonic or appendiceal morphology; and (4) unilateral adenocarcinoma consistent with colonic or appendiceal morphology with a history of a colonic or appendiceal adenocarcinoma. When any one of these features was present the ovarian tumor was diagnosed as secondary, The following additional features also were considered to be more typical of secondary ovarian involvement: (1) normal or only slightly enlarged ovaries; (2) bilateral ovarian involvement; (3) simple or only focally proliferative mucinous epithelium with abundant extracellular mucin in cases with predominantly surface involvement of the ovaries, with or without a history of/or concurrent appendiceal adenoma; (4) multifocal or extensive pseudomyxoma ovarii in cases with stromal involvement, with or without a history of/or concurrent appendiceal adenoma; (5) ruptured appendiceal adenoma and unuptured ovarian tumor of similar histology; and (6) presence of an associated mucinous intestinal tumor. If at least three of the above features were present, the ovarian tumor also was diagnosed as secondary. When classified according to all of these criteria 28 of the 30 cases of PMP (93.3%) were attributed to primary mucinous appendiceal or colonic tumors, and the remaining two were compatible with either intestinal or ovarian origin. No cases were of unequivocal ovarian origin. Analysis of multiple histologic features of the ovarian, intestinal, and peritoneal mucinous tumors showed that the PMP cases could be separated into two pathologically and prognostically distinct groups based on the associated intestinal tumor diagnosis. Appendiceal adenoma-associated cases showed a significantly better prognosis than appendiceal or intestinal carcinoma-associated cases (P < .0001). Nearly all appendiceal adenoma-associated cases were characterized by appendiceal, ovarian, and peritoneal tumors with no significant atypia or epithelial proliferation and absence of lymph node involvement and parenchymal organ invasion. In contrast, the carcinoma-associated cases displayed significant atypia and epithelial proliferation in the intestinal, ovarian, and peritoneal tumors, In addition, these tumors were frequently associated with lymph node and parenchymal organ metastases. Accordingly, we recommend that the term PMP be restricted to those cases that have the features of appendiceal adenoma-associated cases. The carcinoma-associated cases should be classified as mucinous carcinomas and not included in the category of PMP. Finally, the conclusion that PMP is virtually always of appendiceal origin provides the basis for reassessing the entire concept of ovarian mucinous LMP tumors because malignant behavior associated with the latter tumors has virtually always been confined to women with PMP. Copyright (C) 1995 by W.B. Saunders Company C1 JOHNS HOPKINS UNIV HOSP,DEPT PATHOL,DIV GYNECOL PATHOL,BALTIMORE,MD 21287. JOHNS HOPKINS UNIV HOSP,DEPT GYNECOL & OBSTET,BALTIMORE,MD 21287. WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,DEPT PATHOL,SAN ANTONIO,TX. WASHINGTON HOSP CTR,DEPT PATHOL,WASHINGTON,DC. WASHINGTON HOSP CTR,DEPT SURG,WASHINGTON,DC. MEDLANT RES INST,WASHINGTON,DC. NR 28 TC 159 Z9 168 U1 0 U2 4 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0046-8177 J9 HUM PATHOL JI Hum. Pathol. PD MAY PY 1995 VL 26 IS 5 BP 509 EP 524 DI 10.1016/0046-8177(95)90247-3 PG 16 WC Pathology SC Pathology GA QY805 UT WOS:A1995QY80500008 PM 7750935 ER PT J AU MOORE, GT KOCH, K AF MOORE, GT KOCH, K TI EFFICIENT HIGH-GAIN 2-CRYSTAL OPTICAL PARAMETRIC OSCILLATOR SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID GENERATION AB A high-gain optical parametric oscillator containing two crystals in series with 90% signal outcoupling after the first crystal and 100% idler outcoupling after both crystals is found to give stable highly efficient operation over a wide dynamic range of pump intensity, Most of the small-signal gain results from the longer second crystal, but most of the energy conversion at saturation occurs in the shorter first crystal. Power loading in the crystals is predominately due to the incident pump, and is small in the second crystal after saturation. Theoretical description of the device is presented in terms of a plane-wave model, as well as a numerical model which incorporates transverse effects in one transverse dimension, It is found that the device can exhibit a period-two limit cycle when the two crystals are tuned to the same frequencies, Steady-state operation Is obtained by tuning the crystals to slightly different frequencies, without significantly affecting the average efficiency, Experiments using KTP crystals synchronously pumped at 1.064 mu m by a Q-switched mode-locked Nd:YAG laser are proposed, For degenerate down-conversion, a calculation including transverse effects shows that 88.8% of the incident power is converted to 2.128 mu m in a single beam outcoupled after the first crystal, An additional 5.7% emerges as idler power after the second crystal. C1 UNIV NEW MEXICO,CTR ADV STUDIES,ALBUQUERQUE,NM 87131. RP MOORE, GT (reprint author), USAF,PHILLIPS LAB,LIDN,NONLINEAR OPT CTR TECHNOL,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 6 TC 17 Z9 17 U1 1 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD MAY PY 1995 VL 31 IS 5 BP 761 EP 768 DI 10.1109/3.375921 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA QT614 UT WOS:A1995QT61400001 ER PT J AU BOSSERT, DJ MARCIANTE, JR WRIGHT, MW AF BOSSERT, DJ MARCIANTE, JR WRIGHT, MW TI FEEDBACK EFFECTS IN TAPERED BROAD-AREA SEMICONDUCTOR-LASERS AND AMPLIFIERS SO IEEE PHOTONICS TECHNOLOGY LETTERS LA English DT Article ID INCOHERENT OPTICAL FEEDBACK; HIGH-POWER; COHERENCE COLLAPSE; CW AB A detailed experimental investigation of the effect of optical feedback upon the operation of high-power broad area semiconductor lasers Is presented, In particular, we examine the effect optical feedback has upon the beam quality of high-brightness lasers employing a tapered electrical contact, The far-field of such lasers is shown to degrade rapidly with power feedback ratios exceeding -30 dB, leading to a significantly reduced power in the central diffraction-limited far-field lobe, Far-field degradation is accompanied by dynamic instability and spectral broadening, Good beam quality and low intensity noise can be recovered, however, by rotating the feedback polarization. RP BOSSERT, DJ (reprint author), USAF, PHILLIPS LAB, SEMICOND LASER BRANCH, KIRTLAND AFB, NM 87117 USA. NR 15 TC 12 Z9 12 U1 0 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1041-1135 J9 IEEE PHOTONIC TECH L JI IEEE Photonics Technol. Lett. PD MAY PY 1995 VL 7 IS 5 BP 470 EP 472 DI 10.1109/68.384513 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA QX704 UT WOS:A1995QX70400011 ER PT J AU PETERS, RA AF PETERS, RA TI A NEW ALGORITHM FOR IMAGE NOISE-REDUCTION USING MATHEMATICAL MORPHOLOGY SO IEEE TRANSACTIONS ON IMAGE PROCESSING LA English DT Article ID FILTERS; REPRESENTATION AB Morphological openings and closings are useful for the smoothing of gray-scale images. However, their use for image noise reduction is limited by their tendency to remove important, thin features from an image along with the noise. This paper is a description and analysis of a new morphological image cleaning algorithm (MIG) that preserves thin features while removing noise, MIC is useful for gray-scale images corrupted by dense, low-amplitude, random, or patterned noise. Such noise is typical of scanned or still-video images, MIC differs from previous morphological noise filters in that it manipulates residual images-the differences between the original image and morphologically smoothed versions. It calculates residuals on a number of different scales via a morphological size distribution. It discards regions in the various residuals that it judges to contain noise. MIC creates a cleaned image by recombining the processed residual images with a smoothed version. This paper describes the MIC algorithm in detail, discusses the effects of parametric variations, presents the results of a noise analysis and shows a number of examples of its use, including the removal of scanner noise. The paper also demonstrates that MIC significantly improves the JPEG compression of a gray-scale image. C1 BALLIST MISSILE DEF ORG,CTR PLUME DATA,ARNOLD AFB,TN. RP PETERS, RA (reprint author), VANDERBILT UNIV,SCH ENGN,DEPT ELECT ENGN,NASHVILLE,TN 37235, USA. NR 29 TC 64 Z9 68 U1 1 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1057-7149 J9 IEEE T IMAGE PROCESS JI IEEE Trans. Image Process. PD MAY PY 1995 VL 4 IS 5 BP 554 EP 568 DI 10.1109/83.382491 PG 15 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA QV845 UT WOS:A1995QV84500003 PM 18290006 ER PT J AU STAEHLER, JM PREDEBON, WW PLETKA, BJ SUBHASH, G AF STAEHLER, JM PREDEBON, WW PLETKA, BJ SUBHASH, G TI STRAIN-RATE EFFECTS IN HIGH-PURITY ALUMINA SO JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY LA English DT Article ID POLYCRYSTALLINE ALUMINA; CERAMIC MICROSTRUCTURES; DEFORMATION; STRENGTH AB Ultrahigh-strength alumina specimens made from disks produced by vacuum hot pressing high-purity alumina powders were subjected to uniaxial compressive loads at a range of strain rates. It was observed that the material exhibited a failure strength far superior to commercially available alumina. The failure strength was strongly strain-rate dependent and varied from 5.5 GPa at 10(-4) s(-1) to 8.3 GPa at 10(3) s(-1). Microscopic studies on the fragments of the specimens deformed under uniaxial strain revealed extensive twinning and dislocation activity. Based on the experimental results and microscopic observations, the factors and mechanism responsible for the observed high compressive strength are discussed. C1 MICHIGAN TECHNOL UNIV,HOUGHTON,MI 49931. RP STAEHLER, JM (reprint author), WLIMLLM,BLDG 655,2230 10TH ST,SUITE 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 6 Z9 6 U1 1 U2 4 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1047-4838 J9 JOM-J MIN MET MAT S JI JOM-J. Miner. Met. Mater. Soc. PD MAY PY 1995 VL 47 IS 5 BP 60 EP 63 PG 4 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing GA QY351 UT WOS:A1995QY35100013 ER PT J AU DICK, JJ SANDERSON, AJ SIMONETTI, P ODIOT, S KONDRIKOV, BN DUFORT, S NELSON, KA SHACKELFORD, SA AF DICK, JJ SANDERSON, AJ SIMONETTI, P ODIOT, S KONDRIKOV, BN DUFORT, S NELSON, KA SHACKELFORD, SA TI TOWARDS A REALISTIC CHEMISTRY OF THE REACTIONAL PROCESSES IN DETONATION - DISCUSSION SO JOURNAL DE PHYSIQUE IV LA English DT Discussion C1 MENDELEEV UNIV CHEM TECH,MOSCOW 125190,RUSSIA. CEA,F-37260 MONTS,FRANCE. MIT,CAMBRIDGE,MA 02139. NATO,NIMIC,B-1110 BRUSSELS,BELGIUM. USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP DICK, JJ (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 1155-4339 J9 J PHYS IV JI J. Phys. IV PD MAY PY 1995 VL 5 IS C4 BP 586 EP 591 PG 6 WC Physics, Multidisciplinary SC Physics GA RL210 UT WOS:A1995RL21000067 ER PT J AU GORDNIER, RE AF GORDNIER, RE TI COMPUTATION OF DELTA-WING ROLL MANEUVERS SO JOURNAL OF AIRCRAFT LA English DT Article AB This article presents computations of delta-wing roll maneuvers for an 10-deg sweep delta-wing at 30-deg angle of attack. Three constant roll-rate maneuvers are considered. Two of the maneuvers consist of a roll from 0 to 45 deg at nondimensional roll rates of Phi = 0.0233 and 0.0467. The third roll maneuver computed starts at a 45-deg roll angle and rolls back to a -45-deg roll angle at a roll rate Phi = -0.0467. The governing equations are the unsteady, three-dimensional Navier-Stokes equations. The equations are solved using the implicit, approximately-factored, diagonal form of the Beam-Warming algorithm. Subiterations are used to provide a more accurate means of implementing the diagonal form of the algorithm for unsteady flows. The effects of roll-rate and differing initial roll angles on the dynamical behavior of the vortices positions and strengths as well as their corresponding effect on surface pressure and roll moment coefficient are described. RP GORDNIER, RE (reprint author), USAF,WRIGHT LAB,DIV AEROMECH,CFD RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 30 Z9 32 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1995 VL 32 IS 3 BP 486 EP 492 DI 10.2514/3.46746 PG 7 WC Engineering, Aerospace SC Engineering GA RA436 UT WOS:A1995RA43600005 ER PT J AU SHANG, JS AF SHANG, JS TI ASSESSMENT OF TECHNOLOGY FOR AIRCRAFT DEVELOPMENT SO JOURNAL OF AIRCRAFT LA English DT Article AB An assessment of analysis and design tools for aircraft technology has been accomplished. By addressing the limitations of computational and experimental techniques for aircraft performance simulation, the critical and basic topics for improvement have been identified as turbulence, laminar-turbulent transition, aerodynamic bifurcation, and vortex interaction. Specific areas of future emphasis are also highlighted. RP SHANG, JS (reprint author), USAF,WRIGHT LAB,WL-FIM 2645 FIFTH ST,STE 6,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1995 VL 32 IS 3 BP 611 EP 617 DI 10.2514/3.46763 PG 7 WC Engineering, Aerospace SC Engineering GA RA436 UT WOS:A1995RA43600022 ER PT J AU GORDNIER, RE AF GORDNIER, RE TI COMPUTATION OF VORTEX BREAKDOWN ON A ROLLING DELTA-WING SO JOURNAL OF AIRCRAFT LA English DT Note RP GORDNIER, RE (reprint author), USAF,WRIGHT LAB,DIV AEROMECH,CFD RES BRANCH,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 2 Z9 2 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD MAY-JUN PY 1995 VL 32 IS 3 BP 686 EP 688 DI 10.2514/3.46777 PG 3 WC Engineering, Aerospace SC Engineering GA RA436 UT WOS:A1995RA43600036 ER PT J AU EVWARAYE, AO SMITH, SR MITCHEL, WC AF EVWARAYE, AO SMITH, SR MITCHEL, WC TI PERSISTENT PHOTOCONDUCTANCE IN N-TYPE 6H-SIC SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID ADMITTANCE SPECTROSCOPY; SCHOTTKY BARRIERS; RELAXATION; SEMICONDUCTORS; MODEL RP EVWARAYE, AO (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 27 TC 20 Z9 20 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD MAY 1 PY 1995 VL 77 IS 9 BP 4477 EP 4481 DI 10.1063/1.359478 PG 5 WC Physics, Applied SC Physics GA QV479 UT WOS:A1995QV47900037 ER PT J AU BROWN, GJ SZMULOWICZ, F HEGDE, SM AF BROWN, GJ SZMULOWICZ, F HEGDE, SM TI PHOTORESPONSE STUDY OF NORMAL INCIDENCE DETECTION IN P-TYPE GAAS/ALGAAS MULTIPLE-QUANTUM WELLS SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 1993 US Workshop on the Physics and Chemistry of Mercury Cadmium Telluride and Other IR Materials CY OCT 19-21, 1993 CL SEATTLE, WA SP USA, CECOM NIGHT VIS & ELECTR SENSORS DIRECTORATE, USAF, WRIGHT LAB, USN, OFF NAVAL TECHNOL DE GAAS/ALGAAS MULTIPLE QUANTUM WELL (MQW); INFRARED DETECTORS; INTERSUBBAND ABSORPTION; QUANTUM WELL INFRARED PHOTODETECTOR (QWIP) ID INFRARED PHOTODETECTORS; ABSORPTION AB We studied p-type GaAs/AlGaAs multiple quantum well (MQW) materials as a possible alternative to the current n-type GaAs/AlGaAs MQWs for infrared detection. The advantage of p-type MQWs is that absorption of infrared radiation at normal incidence is not selection rule forbidden as it is for the n-type. We have verified that significant photoresponse occurs at normal incidence in p-type MQWs. We studied changes in the photoresponse spectrum as a function of well width and temperature. The MQW heterostructures were designed to use bound to continuum intersubband absorption in the GaAs valence band and to have a peak photoresponse near 8 mu m. The photoresponse spectrum was compared to the first theoretical model of the bound to continuum absorption in p-type GaAs/AlGaAs MQWs. The theoretical absorption curve was found to be in good qualitative agreement with the experimental results. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP BROWN, GJ (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 1 Z9 1 U1 1 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD MAY PY 1995 VL 24 IS 5 BP 559 EP 564 DI 10.1007/BF02657963 PG 6 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA QZ283 UT WOS:A1995QZ28300022 ER PT J AU CHANDLER, PR PACHTER, M MEARS, M AF CHANDLER, PR PACHTER, M MEARS, M TI SYSTEM-IDENTIFICATION FOR ADAPTIVE AND RECONFIGURABLE CONTROL SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB In this work, an efficient static system identification method is developed that incorporates prior information. The prior information from flight mechanics enhances the performance of the identification algorithm, yielding more accurate parameter estimates. The proposed static system identification approach is superior to dynamic system identification for on-line identification of rapidly varying plant parameters, making it suitable for adaptive and reconfigurable control. The effectiveness of the static system identification scheme is illustrated in an example problem. A derivative F-16 aircraft control surface (elevator) failure is simulated and the abruptly changing pitch channel control system's stability and control derivatives are successfully identified on-line in the presence of unmodeled dynamics, process noise (clear air turbulence), and realistic measurement noise. C1 USAF,WRIGHT LAB,DEPT ELECTR & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. RP CHANDLER, PR (reprint author), USAF,WRIGHT LAB,DIV FLIGHT CONTROL,2210 8TH ST,STE 21,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 86 Z9 88 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD MAY-JUN PY 1995 VL 18 IS 3 BP 516 EP 524 DI 10.2514/3.21417 PG 9 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA QY606 UT WOS:A1995QY60600018 ER PT J AU YINON, J JOHNSON, JV BERNIER, UR YOST, RA MAYFIELD, HT MAHONE, WC VORBECK, C AF YINON, J JOHNSON, JV BERNIER, UR YOST, RA MAYFIELD, HT MAHONE, WC VORBECK, C TI REACTIONS IN THE MASS-SPECTROMETRY OF A HYDRIDE MEISENHEIMER COMPLEX OF 2,4,6-TRINITROTOLUENE (TNT) SO JOURNAL OF MASS SPECTROMETRY LA English DT Article AB A hydride Meisenheimer complex of 2,4,6-trinitrotoluene (TNT) (TNTH-) was synthesized using tetramethylammonium octahydroborate. TNT and TNTH- (as the tetramethylammonium salt) were analyzed by direct exposure probe mass spectrometry using electron impact (EI), chemical ionization (CI) and negative-ion chemical ionization (NCI). For further identification, the ions of the mass spectra were investigated using tandem mass spectrometry with collision-induced dissociation (CID). Although the Fl mass spectra of both compounds were similar, the CID mass spectra of the ions at mit 227 (M(+) of TNT) of the two compounds showed large differences in daughter ion abundances. A major difference between the two compounds also appeared in their CI methane mass spectra. Two abundant ions, at m/z 183 and 198, appeared only in the CI mass spectrum of TNTH-. CID parent ion scans showed that the origin of these two ions was not the mit 227 ion. We suggest that these ions are formed by chemical reactions of the complex on the surface of the heated probe tip, followed by ionization. These reactions, probably a reduction process forming mit 198 and hydrolysis forming mit 183, occur preferentially in TNTH-, the already reduced form of TNT. Formation of the ions at m/z 183 and 198 was also observed in the liquid chromatography particle beam CI mass spectrum of TNTH-. C1 UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611. USAF,ARMSTRONG LAB,TYNDALL AFB,FL 32403. UNIV STUTTGART,INST MICROBIOL,D-70569 STUTTGART,GERMANY. RP YINON, J (reprint author), WEIZMANN INST SCI,DEPT ENVIRONM SCI & ENERGY RES,IL-76100 REHOVOT,ISRAEL. NR 6 TC 10 Z9 10 U1 2 U2 9 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1076-5174 J9 J MASS SPECTROM JI J. Mass Spectrom. PD MAY PY 1995 VL 30 IS 5 BP 715 EP 722 DI 10.1002/jms.1190300510 PG 8 WC Biophysics; Chemistry, Organic; Spectroscopy SC Biophysics; Chemistry; Spectroscopy GA QZ757 UT WOS:A1995QZ75700009 ER PT J AU KROESE, JH DREHMAN, AJ HORRIGAN, JA AF KROESE, JH DREHMAN, AJ HORRIGAN, JA TI REDUCED YSZ DEPOSITION TEMPERATURES FOR YBA2CU3OX/YSZ THIN-FILMS ON SAPPHIRE SO JOURNAL OF MATERIALS RESEARCH LA English DT Article ID BUFFER LAYERS; AL2O3; SI AB Thin films of Y-stabilized ZrO2 (YSZ) were deposited by RF diode sputtering on R-plane sapphire as a buffer layer for the deposition of YBa2Cu3Ox (YBCO). By increasing the partial pressure of oxygen in the sputter gas mixture from 20% to 50%, it was found that the substrate temperature required to obtain (100) oriented YSZ deposition could be lowered to 630 degrees C from 800 degrees C. This change is attributed to heating or mixing effects at the film surface, due to an increase in negative ion bombardment, which supplements the effects of external heating. Increases in the partial pressure of-oxygen beyond 50% were found to be counterproductive. YBCO films, deposited on the YSZ buffer layers via magnetron sputtering, showed c-axis orientation and transition temperatures of 82 K, Orientation of both the YSZ and YBCO films was confirmed by x-ray diffraction and SEM characterization. RP KROESE, JH (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 12 TC 4 Z9 4 U1 0 U2 2 PU MATERIALS RESEARCH SOCIETY PI PITTSBURGH PA 9800 MC KNIGHT ROAD SUITE 327, PITTSBURGH, PA 15237 SN 0884-2914 J9 J MATER RES JI J. Mater. Res. PD MAY PY 1995 VL 10 IS 5 BP 1086 EP 1090 DI 10.1557/JMR.1995.1086 PG 5 WC Materials Science, Multidisciplinary SC Materials Science GA QU865 UT WOS:A1995QU86500005 ER PT J AU CINIBULK, MK AF CINIBULK, MK TI THERMAL-STABILITY OF SOME HEXALUMINATES AT 1400-DEGREES-C SO JOURNAL OF MATERIALS SCIENCE LETTERS LA English DT Article RP CINIBULK, MK (reprint author), WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 15 TC 24 Z9 24 U1 0 U2 6 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0261-8028 J9 J MATER SCI LETT JI J. Mater. Sci. Lett. PD MAY 1 PY 1995 VL 14 IS 9 BP 651 EP 654 DI 10.1007/BF00586168 PG 4 WC Materials Science, Multidisciplinary SC Materials Science GA RA169 UT WOS:A1995RA16900015 ER PT J AU ABSHIRE, TC FINK, LK CHRISTIAN, J HATHAWAY, WE AF ABSHIRE, TC FINK, LK CHRISTIAN, J HATHAWAY, WE TI THE PROLONGED THROMBIN TIME OF NEPHROTIC SYNDROME SO JOURNAL OF PEDIATRIC HEMATOLOGY ONCOLOGY LA English DT Article DE THROMBIN TIME; DYSFIBRINOGEN; ALTERED FIBRINOGEN; NEPHROTIC SYNDROME ID SIALIC-ACID; FIBRINOGEN; CHILDREN; PLASMA; DYSFIBRINOGENEMIA; PHOSPHORYLATION; POLYMERIZATION; FIBRINOPEPTIDE; FIBRINOLYSIS; DEGRADATION AB Purpose: Little information is available that documents the incidence and possible etiology of a prolonged thrombin time (TT) found in children with nephrotic syndrome. We speculated that this prolonged TT might best be explained by an altered fibrinogen similar to that found in the newborn. Patients and Methods: We describe 20 children with nephrosis, an unexplained prolonged TT and reptilase lime (RT), and an elevated fibrinogen level. Thrombin and/or plasmin effect on plasma fibrinogen was studied by analyzing for soluble monomer, D-dimer, fibrin degradation products, B beta 1-42 peptide, and by polyacrylamide gel electrophoresis (PAGE) and agarose electrophoresis. Structural changes in the fibrinogen molecule were investigated using two- dimensional gel (2D gel) electrophoresis. Fibrinogen was purified via glycine precipitation, and the sialic acid (SA) content was determined. Results: No evidence for in vivo thrombin and/or plasmin effect on fibrinogen could be detected in 13 of 20 children tested. Additionally, no fibrin/fibrinogen degradation products or soluble fibrin complexes were detected using PAGE or agarose electrophoresis in this group of patients. The B beta isoforms of nephrosis fibrinogen were similar in isoelectric point on 2D gel electrophoresis to those of fetal fibrinogen and demonstrated a greater electronegative shift when compared with normal adult Fibrinogen. Also, the SA content of nephrosis and fetal fibrinogen were greater than that measured in adult fibrinogen. Both nephrosis and fetal fibrinogen were more resistant to neuraminidase treatment than was normal adult fibrinogen. Conclusions: These data support the notion that an altered fibrinogen exists in some children with nephrotic syndrome characterized by an increased TT and RT, elevated fibrinogen, and both an increased negative charge and SA content. C1 UNIV COLORADO,SCH MED,DEPT PEDIAT,DENVER,CO 80262. VET ADM MED CTR,DEPT PATHOL,LITTLE ROCK,AR. RP ABSHIRE, TC (reprint author), USAF,KEESLER MED CTR,DEPT PEDIAT,301 FISHER ST,SUITE 102,KEESLER AFB,MS 39534, USA. NR 32 TC 5 Z9 5 U1 0 U2 3 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 1077-4114 J9 J PEDIAT HEMATOL ONC JI J. Pediatr. Hematol. Oncol. PD MAY PY 1995 VL 17 IS 2 BP 156 EP 162 DI 10.1097/00043426-199505000-00010 PG 7 WC Oncology; Hematology; Pediatrics SC Oncology; Hematology; Pediatrics GA QY931 UT WOS:A1995QY93100010 PM 7749766 ER PT J AU LEE, DJ MEEHAN, RT ROBINSON, C SMITH, ML MABRY, TR AF LEE, DJ MEEHAN, RT ROBINSON, C SMITH, ML MABRY, TR TI PSYCHOSOCIAL CORRELATES OF IMMUNE RESPONSIVENESS AND ILLNESS EPISODES IN US AIR-FORCE ACADEMY CADETS UNDERGOING BASIC CADET TRAINING SO JOURNAL OF PSYCHOSOMATIC RESEARCH LA English DT Article; Proceedings Paper CT 1990 Annual Meeting of the American-Psychosomatic-Society CY MAR 22-24, 1990 CL BOSTON, MA SP Amer Psychosomat Soc DE STRESS; HOSTILITY; WELL-BEING; PSYCHONEUROIMMUNOLOGY; UPPER RESPIRATORY INFECTION; INFLUENZA ID PSYCHOLOGICAL STRESS; COMMON COLD; SUSCEPTIBILITY; LYMPHOCYTE; LONELINESS; OPTIMISM; DISEASE; HUMANS; HEALTH; RISK AB This study examined psychosocial correlates of immune function and illness in 89 male first-year US Air Force Academy cadets. A psychosocial questionnaire was administered to cadets prior to their arrival at the academy and was readministered during cadet orientation and during the stressful environment of Basic Cadet Training (BCT). Immune responsiveness was analyzed by PHA-, PMA-, or anti-CD3-stimulated thymidine uptake in mononuclear leucocytes. Illness episodes were assessed via medical chart review and self-reported symptoms. There were significant increases in distress levels as cadets entered BCT. No psychosocial measure assessed prior to arrival at the academy predicted level of PHA-, PMA-, and anti-CD3-stimulated thymidine uptake or risk of illness. However, hostility levels reported during BCT predicted risk of illness in the four weeks following psychosocial assessment (odds ratio = 7.1; 95% confidence interval: 1.4-36.1). Elevated response to environmental stressors and lower well-being levels also predicted impending illness, but only in the cohort of cadets who had not contracted food poisoning prior to assessment during BCT (OR = 9.3, Cl = 1.9-46.7; OR = 0.09, CI = 0.02-0.53). These results suggest that self-report measures of hostility, response to environmental stressors and wellbeing may be useful predictors of impending illness episodes in males encountering high stress environments. C1 UNIV COLORADO,HLTH SCI CTR,DEPT INTERNAL MED,DENVER,CO. UNIV COLORADO,HLTH SCI CTR,CHILDRENS HOSP,DEPT PATHOL,DENVER,CO. USAF,DEPT BEHAV SCI & LEADERSHIP,COLORADO SPRINGS,CO. RP LEE, DJ (reprint author), UNIV MIAMI,SCH MED,DEPT EPIDEMIOL & PUBL HLTH,MIAMI,FL 33152, USA. NR 42 TC 11 Z9 11 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-3999 J9 J PSYCHOSOM RES JI J. Psychosomat. Res. PD MAY PY 1995 VL 39 IS 4 BP 445 EP 457 DI 10.1016/0022-3999(94)00145-U PG 13 WC Psychiatry SC Psychiatry GA RG059 UT WOS:A1995RG05900005 PM 7562674 ER PT J AU SMIKLE, CB SATIN, AJ DELLINGER, CL HANKINS, GDV AF SMIKLE, CB SATIN, AJ DELLINGER, CL HANKINS, GDV TI PHYSICAL AND SEXUAL ABUSE - A MIDDLE-CLASS CONCERN SO JOURNAL OF REPRODUCTIVE MEDICINE LA English DT Article DE SPOUSE ABUSE ID DOMESTIC VIOLENCE; PREVALENCE; PREGNANCY; ASSAULT; SAMPLE AB This study evaluated the prevalence of physical and/or sexual abuse in a population Of employed, middle-class women who all have access to health care. Questionnaires were given to all patients who came to the ambulatory gynecology clinic at Wilford Hall Medical Center from October 19, 1992, to November 13, 1992. Questions were asked to ascertain the number of women who had experienced at least one episode of forced sexual contact or physical abuse. Other questions allowed identification of the relationship of the assailant to the respondent, number of occurrences and injuries resulting from the abuse. Of the 531 women who responded, 72 reported a history of only physical abuse, and 37 reported a history of only sexual abuse. Forty women reported that they were both physically and sexually abused. The typical victim of abuse was younger (32.6 vs. 39.8 years old, P < .001) and was more likely to work outside the home (63.1% vs. 47.9%, P < .005). Women were significantly more likely to be battered by a husband or lover than to be sexually assaulted by an intimate partner (75% vs. 16%, P < .001). Women who were both physically and sexually abused were injured more often than women who were only physically or sexually abused (60% vs. 28%, P < .01, and 60% vs. 24%, P < .01, respectively). Victims abused by an intimate partner were more likely to be abused on more than one occasion. All women should be asked about a recent history of abuse so that individuals identified can be counseled appropriately and attempts can be made to intervene to prevent further episodes of abuse. RP SMIKLE, CB (reprint author), USAF,WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,PSO,2100 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 11 TC 7 Z9 7 U1 0 U2 1 PU SCI PRINTERS & PUBL INC PI ST LOUIS PA P.O. DRAWER 12425 8342 OLIVE BLVD, ST LOUIS, MO 63132 SN 0024-7758 J9 J REPROD MED JI J. Reprod. Med. PD MAY PY 1995 VL 40 IS 5 BP 347 EP 350 PG 4 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA QY127 UT WOS:A1995QY12700004 PM 7608873 ER PT J AU GOODELL, MR ELROD, WC AF GOODELL, MR ELROD, WC TI SUBORBITAL LAUNCH TRAJECTORIES FOR SATELLITE DELIVERY SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB The utility of suborbital launch trajectories to increase the payload capacity for a hypersonic-lifting-body launch vehicle was investigated. This type of trajectory involves deployment of a payload and booster motor from the launch vehicle at suborbital speed. A payload booster motor is required to insert the spacecraft into orbit while the launch vehicle re-enters and returns to earth. For this study, a simplified analytical technique was developed to estimate the payload capacity (not including booster motor) of various suborbital launch trajectories. Comparison with a detailed trajectory simulation showed that the simplified technique provided a reasonable estimate of suborbital trajectory performance. Results indicated that depending on certain vehicle and flight parameters, a hypersonic lifting body following a suborbital ascent trajectory could increase the payload-to-orbit weight by up to 61%. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP GOODELL, MR (reprint author), USAF,LAUNCH CONTROLLER,OPERAT GRP 45,1201 MINUTEMAN ST,PATRICK AFB,FL 32925, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 411 EP 416 DI 10.2514/3.26630 PG 6 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000005 ER PT J AU KOONTZ, SL LEGER, LJ RICKMAN, SL HAKES, CL BUI, DT HUNTON, DE CROSS, JB AF KOONTZ, SL LEGER, LJ RICKMAN, SL HAKES, CL BUI, DT HUNTON, DE CROSS, JB TI OXYGEN INTERACTIONS WITH MATERIALS .3. MISSION AND INDUCED ENVIRONMENTS SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID IRRADIANCE COMPARISON EXPERIMENT-1; SOLAR AB The Evaluation of Oxygen Interactions with Materials III (EOIM-III) flight experiment was developed to obtain benchmark atomic-oxygen-material reactivity data. The experiment was conducted during Space Shuttle mission 46, July 31 to August 7, 1992. Quantitative interpretation of the materials reactivity measurements requires a complete and accurate definition of the space environment exposure, including the thermal history of the payload, the solar ultraviolet exposure, the atomic-oxygen fluence, and any spacecraft outgassing and contamination effects. The thermal history of the payload was measured using 11 thermocouple sensors placed behind selected samples and on the EOIM-III payload structure. The solar ultraviolet exposure history of the EOIM-III payload was determined by analysis of the as-flown orbit and vehicle attitude combined with daily average solar ultraviolet and vacuum ultraviolet fluxes. The atomic-oxygen fluence was assessed in three ways. First, the O-atom fluence was calculated using a program that incorporates the MSIS-86 atmospheric model, the as-flown Space Shuttle trajectory, and solar activity parameters. Second, it was estimated directly from Kapton film erosion. Third, ambient O-atom measurements were made using the quadrupole mass spectrometer on the EOIM-III payload. As of this writing, our best estimate of the O-atom fluence is (2.3 +/- 0.3) X 10(20) atoms/cm(2). Finally, results of postflight surface analysis of selected samples by x-ray photoelectron spectroscopy indicate low levels of molecular contamination on the payload surface. C1 LOCKHEED ENGN & SCI CO INC,HOUSTON,TX 77058. USAF,PHILLIPS LAB,IONOSPHER PHYS BRANCH,BEDFORD,MA 01731. LOS ALAMOS NATL LAB,DIV PHYS CHEM,LOS ALAMOS,NM 87545. RP KOONTZ, SL (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058, USA. NR 19 TC 44 Z9 46 U1 1 U2 4 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 475 EP 482 DI 10.2514/3.26640 PG 8 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000015 ER PT J AU KOONTZ, SL LEGER, LJ VISENTINE, JT HUNTON, DE CROSS, JB HAKES, CL AF KOONTZ, SL LEGER, LJ VISENTINE, JT HUNTON, DE CROSS, JB HAKES, CL TI EOIM-III MASS-SPECTROMETRY AND POLYMER CHEMISTRY - STS-46, JULY-AUGUST 1992 SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID ATOMIC OXYGEN; POLYIMIDE FILMS AB The Evaluation of Oxygen Interactions with Materials III space-flight experiment was developed to obtain benchmark atomic-oxygen reactivity data and wits conducted during Space Transportation System Mission 46. We present an overview of the flight experiment and the results of the Lyndon B. Johnson Space Center polymer chemistry and mass-spectrometer-carousel experiments. Mass-spectrometric measurements of gaseous products formed by O-atom reaction with C-13-labeled Kaptan(TM) revealed CO, CO2, H2O, NO, and NO2. By operating the mass spectrometer to detect naturally occurring ionospheric species, we characterized the ambient ionosphere at various times during the flight experiment and detected the gaseous reaction products formed when ambient ions interacted with the C-13 Kapton carousel sector, Direct comparison of the results of on-orbit O-atom exposures with those conducted in ground-based laboratory systems, which provide known O-atom fluences and translational energies, demonstrated the strong translational-energy dependence of O-atom reactions with a variety of polymers. A line-of-centers reactive scattering model was shown to provide a reasonably accurate description of the translational-energy dependence of polymer reactions with O atoms at high atom kinetic energies, and a Beckede-Ceyer model provided an accurate description of O-atom reactivity over a three-order-of-magnitude range in translational energy and a four-order-of-magnitude range in reaction efficiency. Postflight studies of the polymer samples by x-ray photoelectron spectroscopy and infrared spectroscopy demonstrate that O-atom attack is confined to the near-surface region of the sample, that is, within 50 to 100 Angstrom of the surface. C1 USAF,PHILLIPS LAB,IONOSPHER PHYS BRANCH,BEDFORD,MA 01731. LOS ALAMOS NATL LAB,DIV PHYS CHEM,LOS ALAMOS,NM 87545. LOCKHEED ENGN & SCI CO,HOUSTON,TX 77058. RP KOONTZ, SL (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058, USA. NR 29 TC 56 Z9 59 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 483 EP 495 DI 10.2514/3.26641 PG 13 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000016 ER PT J AU CROSS, JB KOONTZ, SL HUNTON, DE AF CROSS, JB KOONTZ, SL HUNTON, DE TI FLIGHT MASS-SPECTROMETER CALIBRATION IN A HIGH-VELOCITY ATOMIC-OXYGEN BEAM SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB Calibration and characterization of the quadrupole mass-spectrometer component of the Evaluation of Oxygen Interactions with Materials III space-flight experiment are reported in this paper. A high-velocity atom beam system was used to characterize the response of the flight mass spectrometer to high-velocity oxygen atoms (0.8 to 2.5 eV). The response factor based on oxygen atom flux in the high-velocity beam was found to be logarithmically dependent on the exposure history of the instrument, i.e., the calibration factor was logarithmically dependent on atomic oxygen fluence. This dependence was independent of the background pressure over the range between 10(-6) and 10(-4) Torr. Subsequent contamination of the instrument restored the instrument sensitivity to the original value before exposure to atomic oxygen. Carbon dioxide, carbon monoxide, and water were observed in the mass spectrometer whenever high-velocity oxygen atoms were present. The intensity of reaction products caused by interaction of atomic oxygen with contaminated surfaces within the instrument decreases with increasing atomic oxygen fluence, whereas O-2 resulting from recombination of atomic oxygen on surfaces increases with fluence. C1 NASA,JOHNSON SPACE FLIGHT CTR,HOUSTON,TX 77058. USAF,PHILLIPS LAB,BEDFORD,MA 01713. RP CROSS, JB (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 17 TC 19 Z9 19 U1 2 U2 4 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 496 EP 501 DI 10.2514/3.26642 PG 6 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000017 ER PT J AU AHMADJIAN, M JENNINGS, DE AF AHMADJIAN, M JENNINGS, DE TI ANALYSIS OF STS-39 SPACE-SHUTTLE GLOW MEASUREMENTS SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID VEHICLE GLOW; SATELLITE AB Measurements of Space Shuttle glow were conducted on STS-39. Cargo-bay infrared and visible sensors measured intensities and spectral distributions of shuttle glow as a function of attitude, gas releases, day/night, and mission elapsed time, One of these sensors, the spacecraft Kinetic Infrared Test (SKIRT), was a cryogenic infrared spectrometer (0.6-5.4 mu m) which observed nitric oxide, ionized nitric oxide, and hydroxyl in the quiescent and thruster-enhanced Shuttle glow, A nitric oxide gas release significantly enhanced the glow and showed a fast gas-phase reaction and a slower surface-mediated reaction, The glow was also shown to be dependent on the orientation of the shuttle, The change in glow intensity from pointing the orbiter and sensor along the velocity vector, into ram, versus looking 90 deg from ram, showed a cos(2) theta dependence, During nonglow quiescent times, when SKIRT was pointed away from ram toward deep space, there were no emissions down to the sensor noise level of 10(-10) W/cm(2) sr mu m. These measurements provided the first infrared measurements with sufficient sensitivity and spectral resolution to identify molecular species associated with Space Shuttle glow SKIRT demonstrated that very sensitive cryogenic infrared sensors can operate from the Space Shuttle cargo bay. C1 NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RP AHMADJIAN, M (reprint author), USAF,HQ SPACE & MISSILES CTR,PHILLIPS LAB GEOPHYS DIRECTORATE,29 RANDOLPH RD,BEDFORD,MA 01731, USA. RI Jennings, Donald/D-7978-2012 NR 14 TC 4 Z9 4 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 507 EP 513 DI 10.2514/3.26644 PG 7 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000019 ER PT J AU LIU, CT AF LIU, CT TI EFFECT OF PREDAMAGE ON CRACK-GROWTH BEHAVIOR IN A PARTICULATE COMPOSITE-MATERIAL SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID PROPELLANT AB The effects of predamage and strain rate on the crack growth behavior in a highly filled polymeric material were investigated. Centrally cracked predamaged sheet specimens were used to conduct crack propagation tests under two strain rates (0.05 and 5 min(-1)) at room temperature. Experimental data were analyzed, and crack growth resistance curves as well as crack propagation curves, shown as the crack growth rate as a function of mode I stress intensity factor, were plotted. It is found that the crack growth behavior in predamaged specimen is highly dependent on the strain rate. RP LIU, CT (reprint author), USAF,PHILLIPS LAB,EDWARDS AFB,CA 93524, USA. NR 12 TC 0 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 533 EP 537 DI 10.2514/3.26647 PG 5 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000022 ER PT J AU PALAZOTTO, AN BIRMAN, V AF PALAZOTTO, AN BIRMAN, V TI REVIEW OF FRACTURE IN ADHESIVE JOINTS CONSIDERING ROCKET MOTOR APPLICATION SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID ULTRASONIC NONDESTRUCTIVE EVALUATION; FAILURE LOAD PREDICTION; MIXED-MODE FRACTURE; ENERGY-RELEASE RATE; VISCOELASTIC MATERIALS; COMPOSITE PLATES; INTERFACE CRACK; BONDED JOINTS; TOUGHNESS; GROWTH AB The paper presents a review of existing research on fracture problems in adhesively bonded joints. Both the theoretical background and studies dealing with specific design problems are discussed. Investigations that employed experimental techniques to detect fracture are also included. The work that addresses effects of such important phenomena as residual thermal stresses and viscoelasticity is analyzed. Bond fracture in solid rocket motors is discussed to illustrate an array of problems facing a designer of adhesive joints. Difficulties associated with the analysis of adhesive joints in solid rocket motors are discussed. C1 UNIV MISSOURI,CTR ENGN EDUC,ST LOUIS,MO 63121. RP PALAZOTTO, AN (reprint author), USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 80 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD MAY-JUN PY 1995 VL 32 IS 3 BP 538 EP 544 DI 10.2514/3.26648 PG 7 WC Engineering, Aerospace SC Engineering GA RC460 UT WOS:A1995RC46000023 ER PT J AU GUSTAFSON, CM DUTTON, RE KERANS, RJ AF GUSTAFSON, CM DUTTON, RE KERANS, RJ TI FABRICATION OF CLASS MATRIX COMPOSITES BY TAPE CASTING SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Note AB A method has been developed to fabricate borosilicate glass matrix composites reinforced with monofilament SIC fibers by tape casting, Green matrix tapes are laminated with fiber mats of a uniform fiber spacing. The resulting laminate is sintered at 710 degrees C to >98% relative density and HIP-consolidated to full density. The final specimens contain a high volume fraction of fibers (>35 vol%) in a uniform array. A variation of this technique can be used to mount ''microcomposites'' (i.e., coated fibers) in a glass matrix to facilitate fabrication of push-out test specimens. C1 NIST,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP GUSTAFSON, CM (reprint author), WRIGHT STATE UNIV,DAYTON,OH 45435, USA. NR 4 TC 11 Z9 11 U1 0 U2 3 PU AMER CERAMIC SOC 735 CERAMIC PLACE PI WESTERVILLE PA PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD MAY PY 1995 VL 78 IS 5 BP 1423 EP 1424 DI 10.1111/j.1151-2916.1995.tb08510.x PG 2 WC Materials Science, Ceramics SC Materials Science GA QZ087 UT WOS:A1995QZ08700051 ER PT J AU FENIMORE, DL SCHEPLER, KL RAMABADRAN, UB MCPHERSON, SR AF FENIMORE, DL SCHEPLER, KL RAMABADRAN, UB MCPHERSON, SR TI INFRARED CORRECTED SELLMEIER COEFFICIENTS FOR POTASSIUM TITANYL ARSENATE SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID SUM-FREQUENCY GENERATION; KTP AB KTA is a crystallographic isomorph of KTP that shows promise for nonlinear frequency generation throughout the 1-5-mu m region. We present updated Sellmeier coefficients for KTA based on measurements of the refractive index in the 0.4-3.6-mu m region. Predictions of phase-matching behavior by means of these coefficients agree well with experimental data. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP FENIMORE, DL (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Schepler, Kenneth/D-3730-2015; OI Schepler, Kenneth/0000-0001-9658-2305 NR 11 TC 34 Z9 36 U1 1 U2 6 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD MAY PY 1995 VL 12 IS 5 BP 794 EP 796 DI 10.1364/JOSAB.12.000794 PG 3 WC Optics SC Optics GA QW725 UT WOS:A1995QW72500005 ER PT J AU KREIFELS, TL HENGEHOLD, RL YEO, YK THOMPSON, PE SIMONS, DS AF KREIFELS, TL HENGEHOLD, RL YEO, YK THOMPSON, PE SIMONS, DS TI SI1-XGEX/SI MULTIPLE-QUANTUM WELLS ON SI(100) AND SI(110) FOR INFRARED-ABSORPTION SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Article; Proceedings Paper CT 41st National Symposium of the American-Vacuum-Society CY OCT 24-28, 1994 CL DENVER, CO SP Amer Vacuum Soc ID MOLECULAR-BEAM EPITAXY; INTERSUBBAND ABSORPTION; SILICON; DETECTOR; MBE C1 USN,RES LAB,WASHINGTON,DC 20375. NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. RP KREIFELS, TL (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 7 Z9 7 U1 1 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD MAY-JUN PY 1995 VL 13 IS 3 BP 636 EP 641 DI 10.1116/1.579798 PN 1 PG 6 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA RD766 UT WOS:A1995RD76600026 ER PT J AU MCNAMEE, SG BUNNING, TJ PATNAIK, SS MCHUGH, CM OBER, CK ADAMS, WW AF MCNAMEE, SG BUNNING, TJ PATNAIK, SS MCHUGH, CM OBER, CK ADAMS, WW TI THE EFFECT OF ELECTRIC AND MAGNETIC-FIELDS ON THE MELT ORGANIZATION OF A NEMATIC CYCLIC SILOXANE LIQUID-CRYSTAL SO LIQUID CRYSTALS LA English DT Article ID X-RAY-DIFFRACTION; ATTACHED MESOGENIC GROUPS; SIDE-CHAINS; POLYMER; ALIGNMENT; PHASE; POLYSILOXANES; RADIATION; STORAGE AB The presence of periodic diffuse meridional reflections in the X-ray diffraction pattern of the nematic phase of a pentamethylcyclosiloxane compound with pendant mesogenic groups is examined as a function of temperature and frequency of an applied electric field. These reflections are thought to be caused by a tendency of the mesogens to pack in columns of molecules that have no side-to-side registry (uncorrelated strings). Column lengths obtained from the intercepts of plots of Delta s(2) versus s(2), where s is the scattering vector and Delta s is the width of the reflection, indicate association of 3-6 mesogens depending on temperature and frequency. The length over which the strings are correlated are compared to values obtained from a magnetically aligned sample quenched into a glassy nematic phase. The development of a pseudo-layered packing arrangement with decreasing temperature is also discussed. The appearance of a symmetric 4-spot pattern at temperatures slightly above the crystallization temperature suggests the formation of layered domains with local ordering similar to smectic C packing. Layer correlation lengths are calculated and compared for the electrically (110 Angstrom) and magnetically (180 Angstrom) aligned samples. C1 CORNELL UNIV,DEPT MAT SCI & ENGN,ITHACA,NY 14853. RP MCNAMEE, SG (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPJ,WRIGHT PATTERSON AFB,OH 45433, USA. RI Adams, Wade/A-7305-2010 NR 48 TC 10 Z9 10 U1 0 U2 2 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0267-8292 J9 LIQ CRYST JI Liq. Cryst. PD MAY PY 1995 VL 18 IS 5 BP 787 EP 794 DI 10.1080/02678299508036691 PG 8 WC Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary SC Chemistry; Crystallography; Materials Science GA QX245 UT WOS:A1995QX24500015 ER PT J AU CENTERS, PW AF CENTERS, PW TI TURBINE-ENGINE LUBRICANT FOAMING DUE TO SILICONE BASESTOCK USED IN NON-SPECIFICATION SPLINE LUBRICANT SO LUBRICATION ENGINEERING LA English DT Article DE SYNTHETIC LUBRICANTS; FOAM; SILICONE AB Dependent upon molecular weight and distribution, concentration, temperature, air flow, and test details or field application, polydimethylsiloxane (PDMS) may be neutral, profoamant or antifoamant In polyolesters. This understanding wets critical in the solution of a turbine engine lubrication system foaming problem occurring at several military locations. Suspect turbine engine-accessory gearbox assembly materials gathered from several sites were evaluated. One non-specification PDMS-based spline lubricant caused copious foaming of the lubricant at less than ten parts-per-million concentration, while a specification polymethylphenylsiloxane (PMPS)-based lubricant required a concentration nearly 2000 times greater to generate equivalent foam. Use of the profoamant PDMS spline lubricant was then prohibited. Since prohibition, foaming of turbine engine lubricants used in the particular application has not been reported. PMPS impact on foaming of ester lubricants is similar to a much more viscous PDMS attributed to the reduced interaction of PMPS in esters due to pendant phenyl structure of PMPS absent in PDMS. These data provide significant additional insight and methodology to investigate foaming tendencies of partially miscible silicone-ester and other fluid systems. C1 AERO PROPULS & POWER LAB,WRIGHT PATTERSON AFB,OH. RP CENTERS, PW (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 0 Z9 0 U1 0 U2 1 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0024-7154 J9 LUBR ENG JI Lubric. Eng. PD MAY PY 1995 VL 51 IS 5 BP 368 EP 371 PG 4 WC Engineering, Mechanical SC Engineering GA QX248 UT WOS:A1995QX24800003 ER PT J AU MALAKONDAIAH, G NICHOLAS, T AF MALAKONDAIAH, G NICHOLAS, T TI HIGH-TEMPERATURE LOW-CYCLE FATIGUE AND LIFETIME PREDICTION OF TI-24AL-11NB ALLOY SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article AB The influence of hold time on low-cycle fatigue (LCF) of Ti-24Al-11Nb was studied at 650 degrees C. At 0.167 Hz, the alloy exhibits cyclic hardening at all strain levels studied and obeys the well-known Manson-Coffin behavior. A 100-second hold at peak tensile or compressive strain at +/-0.6 pet strain has no observable effect on cycles to failure. For hold times at +/-0.5 pet strain, however, the fatigue lives are nearly halved and specimens show secondary cracking normal to the stress axis. The increase in inelastic strain as a result of hold time appears to be primarily responsible for the observed loss in fatigue life. A linear life fraction model, which considers both fatigue and creep damage, is found to provide good correlation of measured lives with predictions. For the range of test conditions employed, the total and the tensile hysteretic energy per unit volume, absorbed until fracture, remain nearly constant. The tensile hysteretic energy appears to be a more useful measure of fatigue damage for life prediction. C1 USAF,WRIGHT LAB,MLLN,WRIGHT PATTERSON AFB,OH 45433. RP MALAKONDAIAH, G (reprint author), DEF MET RES LAB,PO KANCHANBAGH,HYDERABAD 500258,ANDHRA PRADESH,INDIA. NR 18 TC 10 Z9 11 U1 1 U2 4 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD MAY PY 1995 VL 26 IS 5 BP 1113 EP 1121 DI 10.1007/BF02670608 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QV327 UT WOS:A1995QV32700013 ER PT J AU REVELOS, WC JONES, JW DOLLEY, EJ AF REVELOS, WC JONES, JW DOLLEY, EJ TI THERMAL FATIGUE OF A SIC/TI-15MO-2.7NB-3AL-0.2SI COMPOSITE SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID METAL-MATRIX COMPOSITE; BETA-TITANIUM-ALLOYS; INTERFACIAL DAMAGE; SCS-6 AB The influence of thermal cycling and isothermal exposures in air on the residual ambient temperature strength of SCS-6/Ti-15Mo-2.7Nb-3Al-0.2Si (weight percent) metal-matrix composites comprised of [0](4) and [0/90](s) laminates has been determined. A maximum temperature of 815 degrees C was used in thermal cycling and isothermal exposure. Temperature range, cycle count, maximum/minimum temperature, environment, and hold time at temperature were systematically varied. Postexposure ambient-temperature tension testing, scanning electron and optical microscopy, and fractography were performed on selected specimens to determine the degree of damage. A reduced residual strength was noted in thermal fatigue with increasing cycle count, maximum temperature, and hold time for all specimens tested in air. Isothermal exposures at 815 degrees C also substantially reduced residual ambient-temperature strength, Considerably less reduction in strength occurred in inert environment than in air. Damage processes included matrix cracking, fiber/matrix interface damage, matrix embrittlement by interstitials, and oxide scale formation at specimen surfaces and, in some cases, at matrix/fiber interfaces. Fiber orientations which allowed rapid ingress of oxygen lead to greater matrix embrittlement and resulted in more pronounced reductions in strength. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,DAYTON,OH 45433. UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109. UNIV DAYTON,DEPT MECH ENGN,DAYTON,OH 45469. GEORGE WASHINGTON UNIV,NATL LAW CTR,WASHINGTON,DC 20057. NR 33 TC 12 Z9 14 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD MAY PY 1995 VL 26 IS 5 BP 1167 EP 1181 DI 10.1007/BF02670613 PG 15 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QV327 UT WOS:A1995QV32700018 ER PT J AU JAUCHEM, JR FREI, MR CHANG, KS BERGER, RE AF JAUCHEM, JR FREI, MR CHANG, KS BERGER, RE TI MICROWAVE-INDUCED LETHAL HEAT-STRESS - EFFECTS OF PHENTOLAMINE, PRAZOSIN AND METOPROLOL SO METHODS AND FINDINGS IN EXPERIMENTAL AND CLINICAL PHARMACOLOGY LA English DT Article DE BODY TEMPERATURE; MICROWAVES; THERMOREGULATION; PHENTOLAMINE; PRAZOSIN; METOPROLOL ID RADIOFREQUENCY RADIATION; BODY-TEMPERATURE; SEROTONERGIC AGENTS; THERMAL RESPONSES; BLOOD-VOLUME; HYPERTHERMIA; DRUGS; RATS; IRRADIATION; ANTAGONISTS AB Previous studies have shown that adrenergic antagonists can alter physiological responses to microwave-induced hearing. in the present experiments, 33 ketamine-anesthetized Sprague-Dawley rats were exposed to 2450-MHz microwaves at an average power density of 60 mW/sq cm (whole-body average specific absorption rate of approximately 14 W/kg) until death occurred. The effects of intra-arterial injections of the nonselective alpha-adrenoceptor antagonist phentolamine (10 mg/kg body weight), the alpha(1)-adrenoceptor antagonist prazosin (5 mg/kg), and the beta(1)-adrenoceptor antagonist metoprolol (2 mg/kg) on physiological responses (including changes in body temperature, heart rate, blood pressure, and respiratory rate) were examined. A group of saline-injected animals was included for comparison. There were no significant differences in lethal temperatures, survival times, or rates of temperature change among the different groups. In all groups, heart rate increased continuously during exposure; mean arterial blood pressure increased until colonic temperature reached 41-41.5 degrees C, and then decreased. These heart rate and blood pressure changes were similar to those that occur during environmental heat stress. Despite differences in absolute values of heart heart rate and mean arterial blood pressure among groups, there were no significant differences in changes from baseline levels among groups. From these results, taken together with previous findings in our laboratory, it may be hypothesized that selective alpha(1) blockade (without concurrent alpha(2) blockade) and beta(2) blockade (with or without concurrent beta(1) blockade) are effective in altering physiological responses to microwave exposure. C1 TRINITY UNIV,DEPT BIOL,SAN ANTONIO,TX 78212. OPERAT TECHNOL CORP,SAN ANTONIO,TX. RP JAUCHEM, JR (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV RADIOFREQUENCY RADIAT,BLDG 1184,BROOKS AFB,TX 78235, USA. NR 37 TC 8 Z9 10 U1 0 U2 0 PU J R PROUS SA PI BARCELONA PA APARTADO DE CORREOS 540, 08080 BARCELONA, SPAIN SN 0379-0355 J9 METHOD FIND EXP CLIN JI Methods Find. Exp. Clin. Pharmacol. PD MAY PY 1995 VL 17 IS 4 BP 241 EP 248 PG 8 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA RM925 UT WOS:A1995RM92500003 PM 7475510 ER PT J AU RICHARDS, MF AF RICHARDS, MF TI PLACEBO METHYLPHENIDATE TABLETS SO MILITARY MEDICINE LA English DT Letter RP RICHARDS, MF (reprint author), USAF,SERV PHARM,HOLLOMAN AFB,NM 88330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD MAY PY 1995 VL 160 IS 5 BP A6 EP A6 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA RE457 UT WOS:A1995RE45700001 PM 7659205 ER PT J AU BURDETTE, DE SAKURAI, SY HENRY, TR ROSS, DA PENNELL, PB FREY, KA SACKELLARES, JC ALBIN, RL AF BURDETTE, DE SAKURAI, SY HENRY, TR ROSS, DA PENNELL, PB FREY, KA SACKELLARES, JC ALBIN, RL TI TEMPORAL-LOBE CENTRAL BENZODIAZEPINE BINDING IN UNILATERAL MESIAL TEMPORAL-LOBE EPILEPSY SO NEUROLOGY LA English DT Article ID RECEPTOR-BINDING; HUMAN HIPPOCAMPUS; RAT-BRAIN; DENSITY; FOCI AB PET-demonstrated decreases in [C-11]flumazenil binding occur in anterior mesial temporal structures on the side of epileptogenesis in unilateral mesial temporal lobe epilepsy. We performed quantitative autoradiography on anterior mesial and lateral temporal specimens from 11 subjects with unilateral mesial temporal lobe epilepsy and six neurologically normal controls to identify the predominant in vitro correlates of the decreased [C-11]flumazenil binding. In anterior mesial temporal regions exhibiting the greatest neuronal cell loss, decreases in agonist and antagonist binding to type 1 and 2 (central) benzodiazepine binding sites were highly correlated with neuronal cell counts. Cell loss and decreased binding were particularly prominent in the lateral portion of hippocampal region CA1, adjacent to CA2. Lateral temporal central benzodiazepine binding was diffusely increased, achieving statistical significance in cortical laminae V and VI. These findings suggest that the predominant source of PET-demonstrated decreases in [C-11]flumazenil binding in mesial temporal epilepsy is hippocampal sclerosis, rather than downregulation of central benzodiazepine binding sites on surviving hippocampal neurone. C1 UNIV MICHIGAN,DEPT NEUROL,ANN ARBOR,MI. UNIV MICHIGAN,DEPT INTERNAL MED,ANN ARBOR,MI. UNIV MICHIGAN,NEUROSURG SECT,ANN ARBOR,MI. USAF,MED CTR,DEPT CLIN NEUROSCI,DAYTON,OH. VET ADM MED CTR,NEUROL SERV,GAINESVILLE,FL. OI Henry, Thomas/0000-0002-5708-903X FU NIA NIH HHS [AG08671]; NINDS NIH HHS [NS15655, NS19613] NR 28 TC 79 Z9 79 U1 0 U2 0 PU LITTLE BROWN CO PI BOSTON PA 34 BEACON STREET, BOSTON, MA 02108-1493 SN 0028-3878 J9 NEUROLOGY JI Neurology PD MAY PY 1995 VL 45 IS 5 BP 934 EP 941 PG 8 WC Clinical Neurology SC Neurosciences & Neurology GA QY820 UT WOS:A1995QY82000016 PM 7746410 ER PT J AU BUYNAK, CF BOSSI, RH AF BUYNAK, CF BOSSI, RH TI APPLIED X-RAY COMPUTED-TOMOGRAPHY SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 13th International Conference on the Application of Accelerators in Research and Industry CY NOV 07-10, 1994 CL DENTON, TX SP US DOE, Natl Sci Fdn, Univ N Texas AB The application of X-ray computed tomography (CT) for aircraft and aerospace structures and ancillary equipment has been investigated in the Advanced Development of X-Ray Computed Tomography Applications demonstration (CTAD) program sponsored by the NDE Branch of the Materials Directorate at the Air Force Wright Laboratory. The volumetric feature evaluation capability of X-ray CT offers a quantitative measurement tool for material density/constituents and dimensions. This capability has economic value for improving the evaluation and control of materials and processes used in aircraft/aerospace structures. The CTAD effort has applied CT in a variety of areas such as electronics, closed systems, castings, organic composites and advanced materials and processes, using a wide range of X-ray sources from less than 150 kV to 9 MV. Applications of CT in these areas include configuration control, anomaly detection, geometry acquisition, failure analysis, noninvasive micrography, product development support and engineering fitness for service. C1 BOEING CO,DEF & SPACE GRP,SEATTLE,WA 98124. RP BUYNAK, CF (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 3 Z9 3 U1 0 U2 0 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 MAY PY 1995 VL 99 IS 1-4 BP 772 EP 774 DI 10.1016/0168-583X(94)00615-6 PG 3 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA RK760 UT WOS:A1995RK76000202 ER PT J AU DAUBACH, C AF DAUBACH, C TI LET THE SEA MAKE A NOISE - A HISTORY OF THE NORTH PACIFIC FROM MAGELLAN TO MACARTHUR - MCDOUGALL,WA SO PACIFIC HISTORICAL REVIEW LA English DT Book Review RP DAUBACH, C (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV CALIF PRESS PI BERKELEY PA JOURNALS DEPT 2120 BERKELEY WAY, BERKELEY, CA 94720 SN 0030-8684 J9 PAC HIST REV JI Pac. Hist. Rev. PD MAY PY 1995 VL 64 IS 2 BP 288 EP 289 PG 2 WC History SC History GA RH313 UT WOS:A1995RH31300008 ER PT J AU MIRACLE, DB SCHELTENS, F SUBRAMANIAN, PR AF MIRACLE, DB SCHELTENS, F SUBRAMANIAN, PR TI CRYSTAL-STRUCTURE DETERMINATION OF AL2TA SO PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES LA English DT Article ID SYSTEM; AL AB The crystal point group and space group have been determined for the ordered intermetallic compound Al2Ta using convergent-beam electron diffraction and indexed selected-area diffraction patterns. Al2Ta is determined to belong to the cubic point group ($) over bar 43m, and to the f.c.c. space group F ($) over bar 43m (No. 216). X-ray diffraction data provide a measured lattice constant of 1.9157 +/- 0.002nm. The density of Al2Ta is determined to be 7.4 +/- 0.4 g cm(-3), and the unit cell contains roughly 400 +/- 26 atoms. C1 UES INC,DAYTON,OH. RP MIRACLE, DB (reprint author), USAF,WRIGHT LAB,DAYTON,OH 45433, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU TAYLOR & FRANCIS LTD LONDON PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0141-8637 J9 PHILOS MAG B JI Philos. Mag. B-Phys. Condens. Matter Stat. Mech. Electron. Opt. Magn. Prop. PD MAY PY 1995 VL 71 IS 5 BP 941 EP 953 DI 10.1080/01418639508243598 PG 13 WC Materials Science, Multidisciplinary; Mechanics; Physics, Applied; Physics, Condensed Matter SC Materials Science; Mechanics; Physics GA QW797 UT WOS:A1995QW79700010 ER PT J AU GARSCADDEN, A NAGPAL, R AF GARSCADDEN, A NAGPAL, R TI NONEQUILIBRIUM ELECTRONIC AND VIBRATIONAL KINETICS IN H-2-N-2 AND H-2 DISCHARGES SO PLASMA SOURCES SCIENCE & TECHNOLOGY LA English DT Article; Proceedings Paper CT 12th Europhysics Sectional Conference on the Atomic and Molecular Physics of Ionized Gases (ESCAMPIG XII) CY AUG 23-26, 1994 CL NOORDWIJKERHOUT, NETHERLANDS SP EINDHOVEN UNIV TECHNOL, DEPT TECH PHYS ID ENERGY-POOLING REACTIONS; GLOW-DISCHARGE; DISSOCIATIVE ATTACHMENT; RATE COEFFICIENTS; DC DISCHARGES; NITROGEN; HYDROGEN; STATE; EXCITATION; MODEL AB In the first section of this paper, the results from a systematic theoretical study describing the electron kinetics and the heavy particle kinetics of H-2 in glow discharges through H-2-N-2 mixtures are presented. The results show that the collisional interactions between the vibronic states of H-2, N-2 are highly nonlinear, and that they strongly affect the dissociation, ionization, gas heating, discharge impedance and power loading. It is shown that at low discharge currents (< 80 mA), medium gas pressures (> 1 Torr), and approximate to 10-80%H-2-N-2 gas mixture composition, quenching of the excited electronic states of N-2 by H-2 is the dominant dissociation channel of H-2 in %H-2-%N-2 discharges. The results further demonstrate that the dissociation balance and the electronic/ionization balance in these molecular glow discharges are strongly coupled and that neither can be studied independently of the other. In the second section of this study, a revised kinetic analysis of the formation of atomic H- negative ions in volume sources is presented. A new process for the production of H- is introduced in the analyses. Using data derived from recent experiments, it is shown that the contribution to H- formation from dissociative attachment to the high Rydberg states of H-2 is comparable to (or greater than) that from H-2(X(1) Sigma(g)(+), v). This additional source term for H- production may resolve some of the problems in understanding the H- densities in low-pressure H-2 plasmas. RP GARSCADDEN, A (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 45 TC 106 Z9 106 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0963-0252 J9 PLASMA SOURCES SCI T JI Plasma Sources Sci. Technol. PD MAY PY 1995 VL 4 IS 2 BP 268 EP 280 DI 10.1088/0963-0252/4/2/011 PG 13 WC Physics, Fluids & Plasmas SC Physics GA QZ964 UT WOS:A1995QZ96400013 ER PT J AU BROWN, TM BROWN, RLS AF BROWN, TM BROWN, RLS TI NEUROPSYCHIATRIC CONSEQUENCES OF RENAL-FAILURE SO PSYCHOSOMATICS LA English DT Review ID PLASMA TESTOSTERONE LEVELS; DIALYSIS PATIENTS; PARATHYROID-HORMONE; SECONDARY HYPERPARATHYROIDISM; BRAIN SYNAPTOSOMES; COGNITIVE FUNCTION; BETA-ENDORPHIN; UREMIC MEN; ENCEPHALOPATHY; STAGE AB Renal failure is associated with many subtle, and several distinct, alterations in neuropsychiatric function. This review describes the clinical findings, the treatments, and the known pathophysiology of the neuropsychiatric effects of renal failure. C1 UNIV TEXAS,SCH MED,SAN ANTONIO,TX 78285. RP BROWN, TM (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,LACKLAND AFB,TX 78236, USA. NR 80 TC 9 Z9 10 U1 0 U2 0 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0033-3182 J9 PSYCHOSOMATICS JI Psychosomatics PD MAY-JUN PY 1995 VL 36 IS 3 BP 244 EP 253 PG 10 WC Psychiatry; Psychology SC Psychiatry; Psychology GA QW930 UT WOS:A1995QW93000003 PM 7638311 ER PT J AU SECAN, JA BUSSEY, RM FREMOUW, EJ BASU, S AF SECAN, JA BUSSEY, RM FREMOUW, EJ BASU, S TI AN IMPROVED MODEL OF EQUATORIAL SCINTILLATION SO RADIO SCIENCE LA English DT Article; Proceedings Paper CT Ionospheric Effects Symposium (IES 93) CY 1993 CL ALEXANDRIA, VA SP USN, NAVAL RES LAB, PHILLIPS LAB, USA, SPACE & TERRESTRIAL COMMUN DIRECTORATE, USN, OFF NAVAL RES ID IONOSPHERIC CONVECTION PATTERN; SPREAD-F; REGION AB One of the main limitations of the modeling work that went into the equatorial section of the Wideband ionospheric scintillation model (WBMOD) was that the data set used in the modeling was limited to two stations near the dip equator (Ancon, Peru, and Kwajalein Island, in the North Pacific Ocean) at two fixed local times (nominally 1000 and 2200). Over the past year this section of the WBMOD model has been replaced by a model developed using data from three additional stations (Ascension Island, in the South Atlantic Ocean, Huancayo, Peru, and Manila, Phillipines; data collected under the auspices of the USAF Phillips Laboratory Geophysics Directorate) which provide a greater diversity in both latitude and longitude, as well as cover the entire day. The new model includes variations with latitude, local time, longitude, season, solar epoch, and geomagnetic activity levels. The way in which the irregularity strength parameter C(k)L is modeled has also been changed. The new model provides the variation of the full probability distribution function (PDF) of log(C(k)L) rather than simply the average of log(C(k)L). This permits the user to specify a threshold on scintillation level, and the model will calculate the percent of the time that scintillation will exceed that level in the user-specified scenario. It will also permit calculation of scintillation levels at a user-specified percentile. A final improvement to the WBMOD model is the implementation of a new theory for calculating S-4 on a two-way channel. C1 NW RES ASSOCIATES INC,BELLEVUE,WA 98005. USAF,PHILIPS LABS,BEDFORD,MA. NR 20 TC 86 Z9 92 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD MAY-JUN PY 1995 VL 30 IS 3 BP 607 EP 617 DI 10.1029/94RS03172 PG 11 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA RB414 UT WOS:A1995RB41400011 ER PT J AU KINKEAD, ER WOLFE, RE FLEMMING, CD CALDWELL, DJ MILLER, CR MARIT, GB AF KINKEAD, ER WOLFE, RE FLEMMING, CD CALDWELL, DJ MILLER, CR MARIT, GB TI REPRODUCTIVE TOXICITY SCREEN OF 1,3,5-TRINITROBENZENE ADMINISTERED IN THE DIET OF SPRAGUE-DAWLEY RATS SO TOXICOLOGY AND INDUSTRIAL HEALTH LA English DT Article DE DIETARY; EXPLOSIVES; METHEMOGLOBINEMIA; NITRATE; ORAL; REPRODUCTIVE SCREEN; TNB ID 1,3-DINITROBENZENE; TRINITROTOLUENE AB Several Army installations targeted for restoration have measurable quantities of 1,3,5-trinitrobenzene (TNB) in the soil and groundwater. As part of the process of developing environmental and health effects criteria for restoration, a modified Screening Information Data Set (SIDS) reproductive study was performed. Male and female Sprague-Dawley rats received a diet containing approximately 30, 150, or 300 mg TNB/kg diet. Mating occurred following 14 days of treatment. All darns, one-half the males, and representative pups were maintained for a total of 90 days of treatment. No mortality occurred during the study; however, a decrease in mean body weights was noted in both sexes of high-dose rats. A dose-related effect was noted in measurements of sperm function/activity. Sperm depletion and degeneration of the seminiferous tubules were noted histopathologically. Methemoglobinemia and splenic hemosiderosis were common findings in the high- and mid-dose levels of both sexes at necropsy. No adverse effects were noted in mating or fertility indices. No significant treatment-related differences were found in length of gestation, sex ratio, gestation index, or mean number of pups per litter. C1 USA,WALTER REED ARMY INST RES,MED RES DETACHMENT,WRIGHT PATTERSON AFB,OH. ARMSTRONG LAB,DIV TOXICOL,OCCUPAT & ENVIRONM HLTH DIRECTORATE,WRIGHT PATTERSON AFB,OH. RP KINKEAD, ER (reprint author), MANTECH ENVIRONM TECHNOL INC,POB 31009,DAYTON,OH 45437, USA. NR 23 TC 7 Z9 7 U1 0 U2 0 PU PRINCETON SCIENTIFIC PUBL INC PI PRINCETON PA PO BOX 2155, PRINCETON, NJ 08543 SN 0748-2337 J9 TOXICOL IND HEALTH JI Toxicol. Ind. Health PD MAY-JUN PY 1995 VL 11 IS 3 BP 309 EP 323 PG 15 WC Public, Environmental & Occupational Health; Toxicology SC Public, Environmental & Occupational Health; Toxicology GA RR535 UT WOS:A1995RR53500002 PM 7482571 ER PT J AU PETROPOULOS, PG AF PETROPOULOS, PG TI THE WAVE HIERARCHY FOR PROPAGATION IN RELAXING DIELECTRICS SO WAVE MOTION LA English DT Article AB We consider the propagation of arbitrary electromagnetic pulses in anomalously dispersive dielectrics characterized by M relaxation processes. A partial differential equation for the electric field in the dielectric is derived and analyzed. This single equation describes a hierarchy of M + 1 wave types, each type characterized by an attenuation coefficient and a wave speed. Our analysis identifies a ''skin-depth'' where the pulse response is described by a telegrapher's equation with smoothing terms, travels with the wavefront speed, and decays exponentially. Past this shallow depth we show that the pulse response is described by a weakly dispersive advection-diffusion equation, travels with the sub-characteristic advection speed equal to the zero-frequency phase velocity in the dielectric, and decays algebraically. The analysis is verified with a numerical simulation. The relevance of our results to the development of numerical methods for such problems is discussed. RP PETROPOULOS, PG (reprint author), ARMSTRONG LAB,OES,BROOKS AFB,TX 78235, USA. RI Petropoulos, Peter/M-6495-2013; OI Petropoulos, Peter/0000-0003-1532-8861 NR 9 TC 19 Z9 19 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0165-2125 J9 WAVE MOTION JI Wave Motion PD MAY PY 1995 VL 21 IS 3 BP 253 EP 262 DI 10.1016/0165-2125(94)00052-7 PG 10 WC Acoustics; Mechanics; Physics, Multidisciplinary SC Acoustics; Mechanics; Physics GA QY191 UT WOS:A1995QY19100004 ER PT J AU PAIPANANDIKER, RS DORGAN, JR CARLIN, RT UYANIK, N AF PAIPANANDIKER, RS DORGAN, JR CARLIN, RT UYANIK, N TI BRUSH FORMATION IN MIDDLE-ADSORBING TRIBLOCK COPOLYMERS SO MACROMOLECULES LA English DT Article ID ADSORPTION; KINETICS; SOLVENT C1 COLORADO SCH MINES, DEPT CHEM ENGN & PETR REFINING, GOLDEN, CO 80401 USA. USAF ACAD, FRANK J SEILER RES LAB, COLORADO SPRINGS, CO 80840 USA. ISTANBUL TECH UNIV, DEPT CHEM, ISTANBUL 80626, TURKEY. NR 9 TC 7 Z9 7 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0024-9297 J9 MACROMOLECULES JI Macromolecules PD APR 24 PY 1995 VL 28 IS 9 BP 3471 EP 3473 DI 10.1021/ma00113a055 PG 3 WC Polymer Science SC Polymer Science GA QV060 UT WOS:A1995QV06000056 ER PT J AU HOLMBERG, CD WILLIAMS, GS PERRAM, GP AF HOLMBERG, CD WILLIAMS, GS PERRAM, GP TI QUANTUM-RESOLVED VIBRATIONAL-ENERGY TRANSFER IN BR-79(2)-B-(3)PI(0(U)(+)), V'LESS-THAN-OR-EQUAL-TO-3 SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID FRANCK-CONDON FACTORS; COLLISIONAL DYNAMICS; HALOGEN MOLECULES; LASER-EXCITATION; B3-PI(O+) STATE; BR-2; BR2; SYSTEM C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. NR 25 TC 7 Z9 7 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD APR 22 PY 1995 VL 102 IS 16 BP 6481 EP 6486 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QU333 UT WOS:A1995QU33300014 ER PT J AU WELSH, BM ROGGEMANN, MC AF WELSH, BM ROGGEMANN, MC TI SIGNAL-TO-NOISE COMPARISON OF DECONVOLUTION FROM WAVE-FRONT SENSING WITH TRADITIONAL LINEAR AND SPECKLE IMAGE-RECONSTRUCTION SO APPLIED OPTICS LA English DT Article DE SPECKLING IMAGING; SPECKLE INTERFEROMETRY; IMAGING; SPECKLE HOLOGRAPHY ID ADAPTIVE OPTICS; PERFORMANCE; HOLOGRAPHY; PHASE AB It is well known that atmospheric turbulence severely degrades the performance of ground-based imaging systems. Techniques to overcome the effects of the atmosphere have been developing at a rapid pace over the past 10 years. These techniques can be grouped into two broad categories: predetection and postdetection techniques. A recent newcomer to the postdetection scene is deconvolution from wave-front sensing (DWFS). DWFS is a postdetection image-reconstruction technique that makes use of one feature of predetection techniques. A wave-front sensor (WFS) is used to record the wave-front phase distortion in the pupil of the telescope for each short-exposure image. The additional information provided by the WFS is used to estimate the system's point-spread function (PSF). The PSF is then used in conjunction with the ensemble of short-exposure images to obtain an estimate of the object intensity distribution through deconvolution. With the addition of DWFS to the suite of possible postdetection image-reconstruction techniques, it is natural to ask ''How does DWFS compare with both traditional linear and speckle image-reconstruction techniques?'' In the results we make a direct comparison based on a frequency-domain signal-to-noise-ratio performance metric. This metric is applied to each technique's image-reconstruction estimator. We find that DWFS nearly always results in improved performance over the estimators of traditional linear image reconstruction such as Wiener filtering. On the other hand, DWFS does not always outperform speckle-imaging techniques, and in cases that it does the improvement is small. C1 USAF,INST TECHNOL,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. RP WELSH, BM (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 5 Z9 6 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD APR 20 PY 1995 VL 34 IS 12 BP 2111 EP 2119 PG 9 WC Optics SC Optics GA QU588 UT WOS:A1995QU58800015 PM 21037757 ER PT J AU GUELSANDOVAL, S PAXTON, AH SRINIVASAN, ST SUN, SZ HERSEE, SD ALLEN, MS MOELLER, CE GALLANT, DJ DENTE, GC MCINERNEY, JG AF GUELSANDOVAL, S PAXTON, AH SRINIVASAN, ST SUN, SZ HERSEE, SD ALLEN, MS MOELLER, CE GALLANT, DJ DENTE, GC MCINERNEY, JG TI NOVEL HIGH-POWER AND COHERENT SEMICONDUCTOR-LASER WITH A SHAPED UNSTABLE RESONATOR SO APPLIED PHYSICS LETTERS LA English DT Article ID OPERATION C1 USAF,PHILLIPS LAB,LIDA,KIRTLAND AFB,NM 87117. ROCKWELL POWER SYST,ALBUQUERQUE,NM 87175. GCD ASSOCIATES,ALBUQUERQUE,NM 87110. NATL UNIV IRELAND UNIV COLL CORK,DEPT PHYS,CORK,IRELAND. RP GUELSANDOVAL, S (reprint author), UNIV NEW MEXICO,CTR HIGH TECHNOL MAT,ALBUQUERQUE,NM 87131, USA. NR 13 TC 13 Z9 13 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD APR 17 PY 1995 VL 66 IS 16 BP 2048 EP 2050 DI 10.1063/1.113688 PG 3 WC Physics, Applied SC Physics GA QT728 UT WOS:A1995QT72800013 ER PT J AU PETERKIN, RE AF PETERKIN, RE TI DIRECT ELECTROMAGNETIC ACCELERATION OF A COMPACT TOROID TO HIGH-DENSITY AND HIGH-SPEED SO PHYSICAL REVIEW LETTERS LA English DT Article ID PLASMA RP PETERKIN, RE (reprint author), USAF,PHILLIPS LAB,DIV HIGH ENERGY PLASMA,KIRTLAND AFB,NM 87117, USA. NR 15 TC 7 Z9 7 U1 0 U2 0 PU AMERICAN 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 APR 17 PY 1995 VL 74 IS 16 BP 3165 EP 3168 PG 4 WC Physics, Multidisciplinary SC Physics GA QT449 UT WOS:A1995QT44900019 ER PT J AU ELSAESSER, DW YEO, YK HENGEHOLD, RL EVANS, KR PEDROTTI, FL AF ELSAESSER, DW YEO, YK HENGEHOLD, RL EVANS, KR PEDROTTI, FL TI ER-RELATED DEEP CENTERS IN GAAS DOPED WITH ER BY ION-IMPLANTATION AND MOLECULAR-BEAM EPITAXY SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; ELECTRICAL-PROPERTIES; SEMICONDUCTORS; DEFECTS C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. ROCKHURST COLL,KANSAS CITY,MO 64110. RP ELSAESSER, DW (reprint author), ROME LAB,BEDFORD,MA 01731, USA. NR 20 TC 11 Z9 11 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD APR 15 PY 1995 VL 77 IS 8 BP 3919 EP 3926 DI 10.1063/1.358571 PG 8 WC Physics, Applied SC Physics GA QU387 UT WOS:A1995QU38700047 ER PT J AU PUFFER, RL AF PUFFER, RL TI THE DAY THE WAR ENDED - MAY 8, 1945 - VICTORY IN EUROPE - GILBERT,M SO LIBRARY JOURNAL LA English DT Book Review RP PUFFER, RL (reprint author), USAF,HIST PROGRAM,EDWARDS AFB,CA 93523, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD APR 15 PY 1995 VL 120 IS 7 BP 92 EP 92 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QT087 UT WOS:A1995QT08700113 ER PT J AU PETERSON, P GAVRIELIDES, A SHARMA, MP AF PETERSON, P GAVRIELIDES, A SHARMA, MP TI CW THEORY OF A DIODE-PUMPED SOLID-STATE LASER IN A RESONANT PUMP CAVITY SO OPTICS COMMUNICATIONS LA English DT Note ID ENERGY AB We develop the cw extraction equations for diode pumped solid state lasers when the pumping field is also constrained by a resonant cavity, That is, both the pump and the laser fields are described by forward and reverse fields and two point boundary conditions. Our model includes depleted pump with direct-manifold pumping characterized by the pump photon connecting the two manifolds from which lasing occurs. We derive the condition for minimum threshold pumping and show that it occurs when the reflected pump field vanishes, We compare the optimal crystal lengths, thresholds, and laser output rates for resonant pumping with their single pass pump counterparts, We show that with the recirculating pump the laser output can be at least ten times larger than the single pass output for the parameters chosen. C1 UNIV NEW MEXICO,DEPT PHYS & ASTRON,ALBUQUERQUE,NM 87131. RP PETERSON, P (reprint author), USAF,PHILLIPS LAB,NONLINEAR OPT CTR TECHNOL,LIDN,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 7 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0030-4018 J9 OPT COMMUN JI Opt. Commun. PD APR 15 PY 1995 VL 116 IS 1-3 BP 123 EP 130 DI 10.1016/0030-4018(95)00061-C PG 8 WC Optics SC Optics GA QT733 UT WOS:A1995QT73300021 ER PT J AU SUBRAMANIAN, PR PARTHASARATHY, TA MENDIRATTA, MG DIMIDUK, DM AF SUBRAMANIAN, PR PARTHASARATHY, TA MENDIRATTA, MG DIMIDUK, DM TI COMPRESSIVE CREEP-BEHAVIOR OF NB5SI3 SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID STRENGTH C1 USAF,WRIGHT LAB,MLLM,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP SUBRAMANIAN, PR (reprint author), UNIVERSAL ENERGY SYST INC,DIV MAT & PROC,DAYTON,OH 45432, USA. RI Parthasarathy, Triplicane/B-7146-2011 OI Parthasarathy, Triplicane/0000-0002-5449-9754 NR 14 TC 48 Z9 51 U1 0 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD APR 15 PY 1995 VL 32 IS 8 BP 1227 EP 1232 DI 10.1016/0956-716X(95)00130-N PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA QT355 UT WOS:A1995QT35500022 ER PT J AU YU, HY SANDAY, SC RATH, BB CHANG, CI AF YU, HY SANDAY, SC RATH, BB CHANG, CI TI ELASTIC FIELDS DUE TO DEFECTS IN TRANSVERSELY ISOTROPIC BIMATERIALS SO PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Article ID DISLOCATIONS; INCLUSION AB A method for obtaining the analytic solution of the elastic fields due to defects such as inclusions, dislocations, disclinations, and point defects in transversely isotropic bimaterials is presented. The bimaterial consists of two semi-infinite transversely isotropic solids either perfectly bonded together or in frictionless contact with each other at a planar interface which is parallel to the plane of isotropy of both solids. The elastic solution is expressed in terms of the hexagonal stress vectors for the double force and the double force with moment. Closed form solutions for inclusions with pure dilatational eigenstrain, straight dislocation and disclination lines, circular dislocation loops, and point defects are presented. C1 USAF, OFF SCI RES, WASHINGTON, DC 20332 USA. RP YU, HY (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. NR 60 TC 18 Z9 18 U1 2 U2 5 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8444 J9 P R SOC-MATH PHYS SC JI P. Roy. Soc.-Math. Phys. Sci. PD APR 8 PY 1995 VL 449 IS 1935 BP 1 EP 30 DI 10.1098/rspa.1995.0029 PG 30 GA QU762 UT WOS:A1995QU76200001 ER PT J AU BRENT, RI ORMSBY, JFA AF BRENT, RI ORMSBY, JFA TI SCALAR ELECTROMAGNETIC PROPAGATION MODELING USING PARABOLIC EQUATIONS AND THE SPLIT-STEP PADE-APPROXIMATION SO JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL LA English DT Article ID OCEAN AB This paper presents a solution of 2D electromagnetic wave propagation problems in complicated terrestrial domains. Scalar 2D parabolic approximations are derived from Maxwell's equations for both vertical and horizontal polarization. The parabolic equations are then solved using a new technique involving Pade rational function approximations of the macroscopic operator. This method allows for larger-than-normal range stepping, speeding up computational time significantly. The Pade approximation and the numerical implementation are fully discussed. The discontinuity at the earth's surface is handled directly by using classical continuity conditions and deriving exact interface conditions for linking the fields in the atmosphere to those in the terrain. The interface conditions are then implemented using the concept of virtual points. Preliminary benchmark tests show the interface treatment to work well. Finally, several example runs are presented illustrating results. C1 JOINT COMMAND & CONTROL WARFARE CTR,KELLY AFB,SAN ANTONIO,TX 78243. RP BRENT, RI (reprint author), UNIV MASSACHUSETTS LOWELL,DEPT MATH SCI,LOWELL,MA 01854, USA. NR 13 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0305-4470 J9 J PHYS A-MATH GEN JI J. Phys. A-Math. Gen. PD APR 7 PY 1995 VL 28 IS 7 BP 2065 EP 2080 DI 10.1088/0305-4470/28/7/025 PG 16 WC Physics, Multidisciplinary; Physics, Mathematical SC Physics GA QU526 UT WOS:A1995QU52600025 ER PT J AU NATARAJAN, LV KIM, SM BOMBICK, DD BUNNING, TJ AF NATARAJAN, LV KIM, SM BOMBICK, DD BUNNING, TJ TI SYNTHESIS, CHARACTERIZATION AND PERFORMANCE OF LIQUID-CRYSTALLINE POLYSILOXANES IN CAPILLARY GAS-CHROMATOGRAPHY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT STATE UNIV,DEPT CHEM,DAYTON,OH 45435. SAIC,DAYTON,OH 45431. WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 62 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301198 ER PT J AU SHOCKEY, E JONES, PF CHAFFEE, KP LICHTENHAN, JD AF SHOCKEY, E JONES, PF CHAFFEE, KP LICHTENHAN, JD TI THERMAL-BEHAVIOR OF POLYHEDRAL OLIGOSILSESQUIOXANE (POSS) SILOXANE COPOLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,PHILLIPS LAB,PROPULS DIRECTORATE,EDWARDS AFB,CA 93524. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 67 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301203 ER PT J AU TAN, LS SIMKO, SR AF TAN, LS SIMKO, SR TI AROMATIC POLYIMIDES BASED ON AN ASYMMETRICALLY BENZAMIDE-PENDANTED BENZIDINE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLBP,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 93 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301229 ER PT J AU TAN, LS VENKATASUBRAMANIAN, N HOUTZ, MD BENNER, CL AF TAN, LS VENKATASUBRAMANIAN, N HOUTZ, MD BENNER, CL TI THERMOSETTING MATRIX RESINS BASED ON 4-HYDROXYBENZOCYCLOBUTENE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLBP,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 94 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301230 ER PT J AU SRINIVASAN, KR TAN, LS AF SRINIVASAN, KR TAN, LS TI SYNTHESIS AND CHARACTERIZATION OF AROMATIC BENZOBISAZOLE POLYMERS INCORPORATED WITH DIPHENYLAMINO MOIETIES SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SYSTRAN CORP,DAYTON,OH 45431. WRIGHT LAB,MLBP,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 95 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301231 ER PT J AU MERKLE, LD GATES, GH LAMONT, GB PACHTER, R AF MERKLE, LD GATES, GH LAMONT, GB PACHTER, R TI CONFORMATIONAL SEARCH USING A PARALLEL FAST MESSY GA WITH MIGRATION AND PARALLEL SELECTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 98 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201859 ER PT J AU DANG, TD WANG, CS CLICK, WE MARTIN, DC DEETER, GA MOORE, JS HUSBAND, DM ARNOLD, FE AF DANG, TD WANG, CS CLICK, WE MARTIN, DC DEETER, GA MOORE, JS HUSBAND, DM ARNOLD, FE TI POLYBENZOBISTHIAZOLES WITH BENZOCYCLOBUTENE CROSS-LINKING SITES FOR IMPROVED FIBER AXIAL COMPRESSIVE STRENGTH SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. UNIV MICHIGAN,ANN ARBOR,MI 48109. RI Martin, David/B-1838-2008 OI Martin, David/0000-0003-1195-3838 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 100 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301236 ER PT J AU TROHALAKI, S PACHTER, R AF TROHALAKI, S PACHTER, R TI PARTITION-COEFFICIENTS FOR NONTOXIC DEICER COMPOUNDS FROM QUANTUM-MECHANICAL CALCULATIONS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 112 EP COMP PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201873 ER PT J AU LEE, CYC AF LEE, CYC TI A STRATEGY TO MAXIMIZE THE ELECTROOPTICAL COEFFICIENT OF E-O POLYMER SYSTEMS BY VARYING THE CHROMOPHORE CONCENTRATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,OFF SCI RES,BOLLING AFB,WASHINGTON,DC 20332. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 125 EP PMSE PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301651 ER PT J AU LAI, TT BIRD, DM AF LAI, TT BIRD, DM TI SYNTHESIS, STRUCTURE, AND REACTIVITY OF LEUCO MITOXANTRONE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 142 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201006 ER PT J AU MCGINNIS, H THLEM, T MAYFIELD, H MAHONE, W HENLEY, M AF MCGINNIS, H THLEM, T MAYFIELD, H MAHONE, W HENLEY, M TI THE CHEMICAL DEGRADATION OF AQUEOUS FILM-FORMING FOAM (AFFF) SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 EQC,AL,TYNDALL AFB,FL. USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 2 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 149 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201013 ER PT J AU HOFFER, S BENSON, LA SCHMIERMUND, RL WIEDEMEIER, TH MILLER, RN AF HOFFER, S BENSON, LA SCHMIERMUND, RL WIEDEMEIER, TH MILLER, RN TI FIELD MEASUREMENT OF DISSOLVED BTEX BIODEGRADATION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 PARSONS ENGN SCI INC,DENVER,CO 80290. USAF,CTR ENVIRONM EXCELLENCE,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 171 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201035 ER PT J AU DAY, PN PACHTER, R ADAMS, WW AF DAY, PN PACHTER, R ADAMS, WW TI THE USE OF THE EFFECTIVE FRAGMENT POTENTIAL FOR CARRYING OUT AB-INITIO CALCULATIONS IN THE CONDENSED-PHASE WITH APPLICATIONS TO AQUEOUS PEPTIDE SYSTEMS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 231 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301367 ER PT J AU BROWN, J THIEM, TL HOLWITT, E KIEL, S AF BROWN, J THIEM, TL HOLWITT, E KIEL, S TI THE CHEMICAL AND BIOCHEMICAL DEGRADATION OF HYDRAZINE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF ACAD,DEPT CHEM,COLORADO SPRINGS,CO 80840. AL,OERT,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 236 EP CHED PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23201099 ER PT J AU CAMPBELL, TJ BURRIS, DR AF CAMPBELL, TJ BURRIS, DR TI SORPTION OF PCE IN A REACTIVE ZERO-VALENT IRON SYSTEM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 ASI INC,TYNDALL AFB,FL 32403. AL,EQC,OL,TYNDALL AFB,FL 32403. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 243 EP ENVR PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23202189 ER PT J AU PACHTER, R ADAMS, WW AF PACHTER, R ADAMS, WW TI PROPERTIES PREDICTION OF POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 259 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301395 ER PT J AU GATES, GH MERKLE, LD LAMONT, GB PACHTER, R ADAMS, WW AF GATES, GH MERKLE, LD LAMONT, GB PACHTER, R ADAMS, WW TI POLYPEPTIDE ENERGY MINIMIZATION USING THE PARALLEL FAST MESSY GENETIC ALGORITHM SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 USAF,INST TECHNOL,GRAD SCH ENGN,WRIGHT PATTERSON AFB,OH 45433. USAF,WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 260 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301396 ER PT J AU WANG, ZQ PACHTER, R ADAMS, WW AF WANG, ZQ PACHTER, R ADAMS, WW TI BIOPOLYMER STRUCTURE PREDICTION SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 261 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301397 ER PT J AU FARMER, BL PODOJIL, GM SOCCI, EP ADAMS, WW AF FARMER, BL PODOJIL, GM SOCCI, EP ADAMS, WW TI MOLECULAR-DYNAMICS SIMULATIONS OF SILOXANE-BASED LIQUID-CRYSTALLINE MATERIALS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,MLPJ,WRIGHT PATTERSON AFB,OH 45433. UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903. UNIV AKRON,DEPT POLYMER SCI,AKRON,OH 44325. UNIV AKRON,INST POLYMER SCI,AKRON,OH 44325. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 264 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301400 ER PT J AU HUSBAND, DM DOTRONG, M DEAN, DR WANG, CS DOTRONG, MH CLICK, WE EVERS, RC AF HUSBAND, DM DOTRONG, M DEAN, DR WANG, CS DOTRONG, MH CLICK, WE EVERS, RC TI PROCESSING AND CHARACTERIZATION OF MULTIDIMENSIONAL BENZOBISOXAZOLE RIGID-ROD POLYMERS SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 326 EP POLY PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23301462 ER PT J AU DOTRONG, M LOVEJOY, SM WOLFE, JF PATIL, GS EVERS, RC AF DOTRONG, M LOVEJOY, SM WOLFE, JF PATIL, GS EVERS, RC TI UNEXPECTED MIGRATION OF A METHYL-GROUP IN THE SYNTHESIS OF A BISBENZOXAZOLE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 LOCKHEED RES & DEV DIV,PALO ALTO,CA 94304. WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. SYSTRAN CORP,DAYTON,OH 45432. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0065-7727 J9 ABSTR PAP AM CHEM S JI Abstr. Pap. Am. Chem. Soc. PD APR 2 PY 1995 VL 209 BP 425 EP ORGN PN 2 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP233 UT WOS:A1995QP23300543 ER PT J AU LUCEY, DR PINTO, LA BETHKE, FR RUSNAK, J MELCHER, GP HASHEMI, F LANDAY, A KESSLER, H PAXTON, RJ GRABSTEIN, K SHEARER, GM AF LUCEY, DR PINTO, LA BETHKE, FR RUSNAK, J MELCHER, GP HASHEMI, F LANDAY, A KESSLER, H PAXTON, RJ GRABSTEIN, K SHEARER, GM TI IL-15 INDUCTION OF LYMPHOKINE-ACTIVATED KILLER-CELLS AND IFN-GAMMA BUT NOT IL-2 FROM PBMCS OF HIV-POSITIVE PERSONS SO JOURNAL OF CELLULAR BIOCHEMISTRY LA English DT Meeting Abstract C1 NCI,EIB,BETHESDA,MD 20892. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RUSH PRESBYTERIAN ST LUKES MED CTR,CHICAGO,IL 60612. IMMUNEX CORP,SEATTLE,WA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0730-2312 J9 J CELL BIOCHEM JI J. Cell. Biochem. PD APR 2 PY 1995 SU 21B BP 209 EP 209 PG 1 WC Biochemistry & Molecular Biology; Cell Biology SC Biochemistry & Molecular Biology; Cell Biology GA QT865 UT WOS:A1995QT86500706 ER PT J AU MORGAN, JA AF MORGAN, JA TI CLINICAL PEARLS - UNILATERAL FACIAL SWELLING AND FEVER - ERYSIPELAS SO ACADEMIC EMERGENCY MEDICINE LA English DT Note DE CRYSIPELAS; CELLULITIS; GROUP A STREPTOCOCCUS C1 WILFORD HALL USAF MED CTR,DEPT EMERGENCY MED,LACKLAND AFB,TX. RP MORGAN, JA (reprint author), BROOKE ARMY MED CTR,JOINT MIL MED CTR SAN ANTONIO,EMERGENCY MED RESIDENCY,FT SAM HOUSTON,TX 78234, USA. NR 8 TC 1 Z9 1 U1 0 U2 2 PU HANLEY & BELFUS INC PI PHILADELPHIA PA 210 S 13TH ST, PHILADELPHIA, PA 19107 SN 1069-6563 J9 ACAD EMERG MED JI Acad. Emerg. Med. PD APR PY 1995 VL 2 IS 4 BP 320 EP & PG 0 WC Emergency Medicine SC Emergency Medicine GA RA302 UT WOS:A1995RA30200016 PM 11727692 ER PT J AU BROWN, AE LANE, JR WAGNER, KF ZHOU, S CHUNG, R RAY, KL BLATT, SP AF BROWN, AE LANE, JR WAGNER, KF ZHOU, S CHUNG, R RAY, KL BLATT, SP TI RATES OF P24 ANTIGENEMIA AND VIRAL ISOLATION IN COMPARABLE WHITE AND BLACK HIV-INFECTED SUBJECTS SO AIDS LA English DT Article DE HIV; AIDS; P24 ANTIGEN; RACE; MILITARY MEDICINE ID IMMUNODEFICIENCY-VIRUS TYPE-1; CAPTURE ASSAY AB Objective: To determine the relative frequencies of HIV-1 p24 antigen and culture positivity in white and black patients. Design: Volunteers in the US military's HIV natural history study were 46% white, 44% black, 7% Hispanic and 3% other. Focusing on the comparable groups of whites and blacks, a retrospective analysis was performed of the results of virologic assays collected over a 2-year period. Methods: p24 antigen was quantitated in sera with and without immune complex dissociation (ICD); viral isolation was performed by coculture of peripheral blood mononuclear cells. Results: Results of the two virologic assays were very similar in the two racial groups, both overall and after stratification by CD4 cell count. As reported previously, the concentration of serum immunoglobulin G was found to be greater in black than white subjects. In contrast to results with ICD, sera tested without ICD resulted in differing (higher) rates of antigenemia in whites than blacks (P=0.002). Conclusions: The frequencies of p24 antigen and culture positivity were found to be independent of race. Previously observed racial differences in antigen positivity were likely to be due to more extensive antibody binding in blacks than in whites. C1 WALTER REED ARMY INST RES,DIV PREVENT MED,ROCKVILLE,MD 20850. SRA TECHNOL,ROCKVILLE,MD. HENRY M JACKSON FDN,ROCKVILLE,MD. USN,MED CTR,BETHESDA,MD 20889. WALTER REED ARMY MED CTR,WASHINGTON,DC 20307. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. RP BROWN, AE (reprint author), WALTER REED ARMY INST RES,DEPT RETROVIRAL RES,SUITE 201,13 TAFT COURT,ROCKVILLE,MD 20850, USA. OI /0000-0002-5704-8094 NR 17 TC 6 Z9 6 U1 0 U2 0 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0269-9370 J9 AIDS JI Aids PD APR PY 1995 VL 9 IS 4 BP 325 EP 328 PG 4 WC Immunology; Infectious Diseases; Virology SC Immunology; Infectious Diseases; Virology GA QP022 UT WOS:A1995QP02200002 PM 7794537 ER PT J AU MIEARS, JR CHARLTON, DG HERMESCH, CB AF MIEARS, JR CHARLTON, DG HERMESCH, CB TI EFFECT OF DENTIN MOISTURE AND STORAGE TIME ON RESIN BEADING SO AMERICAN JOURNAL OF DENTISTRY LA English DT Article ID BOND STRENGTH; SMEAR LAYER; ADHESIVES AB Purpose: To evaluate the effects of dentin moisture and two different storage times on the shear bond strength of resin composite bonded to dentin with Scotchbond Multi-Purpose Adhesive. Materials and Methods: The occlusal surfaces of 60 extracted human molars were reduced to provide flat dentin surfaces. After being hand-finished using wet 400- and 600-grit SiC papers, the teeth were randomly divided into four groups of 15 specimens each. The teeth were etched, rinsed, and then either blotted with gauze which left a visibly moist surface or dried with compressed air. The primer and adhesive were applied according to the manufacturer's instructions and resin composite cylinders were bonded to the teeth. Two of the groups (one moist, one dry) were stored for 24 hours in 37 degrees C distilled water while the other two groups were stored for 90 days in 37 degrees C distilled water. At the end of their storage times, the specimens were loaded to failure in shear at 0.5 mm/minute. Results: Mean bond strength values and standard deviations in MPa were: Dry dentin at 24 hrs, 13.30 +/- 5.1; Dry dentin at 90 days, 13.07 +/- 3.8; Moist dentin at 24 hours, 13.64 +/- 4.9; Moist dentin at 90 days, 15.58 +/- 5.3. No statistically significant differences were found for bond strengths to dry and to moist dentin for either storage time. Time had no significant effect for either the dry dentin group or the moist dentin group. C1 WILFORD HALL USAF MED CTR,DEPT GEN DENT,DUNN DENT CLIN,LACKLAND AFB,TX 78236. USAF,DENT INVEST SERV,BROOKS AFB,TX. NR 22 TC 20 Z9 20 U1 0 U2 0 PU MOSHER & LINDER, INC PI SAN ANTONIO PA 9859 IH-10 WEST, SUITE 107/489, SAN ANTONIO, TX 78230-2236 SN 0894-8275 J9 AM J DENT JI Am. J. Dent. PD APR PY 1995 VL 8 IS 2 BP 80 EP 82 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA QT152 UT WOS:A1995QT15200003 PM 7546483 ER PT J AU HARTMANN, DP MONTGOMERY, EA CARR, NJ GUPTA, PK AZUMI, N AF HARTMANN, DP MONTGOMERY, EA CARR, NJ GUPTA, PK AZUMI, N TI FLOW CYTOMETRIC DNA ANALYSIS OF ULCERATIVE-COLITIS USING PARAFFIN-EMBEDDED BIOPSY SPECIMENS - COMPARISON WITH MORPHOLOGY AND DNA ANALYSIS OF FRESH SAMPLES SO AMERICAN JOURNAL OF GASTROENTEROLOGY LA English DT Article ID INFLAMMATORY BOWEL-DISEASE; COLORECTAL-CANCER; MUCIN HISTOCHEMISTRY; DYSPLASIA; SURVEILLANCE; ANEUPLOIDY; EXPRESSION; COLECTOMY; FOLLOW; CELL AB Objectives: The detection of aneuploidy in colonic mucosa by now cytometric DNA analysis has been advocated as an indicator of high risk for ulcerative colitis (UC) patients developing colon carcinoma. To date, studies have primarily utilized fresh tissue and have had two limitations: a significant number of possible false-positive findings (aneuploidy in the absence of detectable dysplasia) that may be due to DNA degradation, and the inherent inability to perform retrospective studies. The latter has compromised the adequate assessment of no cp cytometric DNA analysis for its clinical utility in UC patients. Our objective was to attempt to overcome the limitations that have been present in DNA analysis by flow cytometry. Methods: After having established, in our laboratory, an optimal method that allowed reliable DNA analysis on paraffin-embedded mucosal biopsy specimens, we conducted three separate studies to address the above problems associated with DNA analysis with fresh colonic samples: I) comparison of DNA analysis between fresh and paraffin-embedded colonic mucosal samples from UC patients without dysplasia, 2) correlation between morphology and DNA ploidy on paraffin-embedded tissues showing no dysplasia and various degrees of dysplasia, and 3) sequential analysis of fresh, normal colonic mucosal samples to further evaluate possible causes of false aneuploidy. Results: We observed I) that there is discordance in DNA ploidy between paraffin-embedded and fresh samples showing no dysplasia in that aneuploidy was found in 33/46 (72%) of fresh samples, whereas 3/40 (7.5%) were aneuploid by biopsies from the corresponding anatomic sites. 2) There is excellent correlation between dysplasia and DNA ploidy results with paraffin-embedded tissue, i.e., none of 16 samples negative for dysplasia, none of seven samples indefinite for dysplasia, and seven of eight samples positive for dysplasia were aneuploid. 3) DNA degradation produced a spurious, near-diploid aneuploid peak in a normal colonic mucosal sample when it was left in saline more than 1 hr before analysis. Conclusions: The above-described results demonstrate that performing flow cytometric DNA analysis with formalin-fixed paraffin-embedded biopsy samples is feasible and that this technique may provide more reliable ploidy results than does the use of fresh samples, when rapid refrigeration and/or freezing of the fresh samples cannot be accomplished consistently, and will permit retrospective DNA ploidy studies assessing risk of cancer in UC patients. C1 GEORGETOWN UNIV,DEPT PATHOL,WASHINGTON,DC 20007. GEORGETOWN UNIV,DEPT GASTROENTEROL,WASHINGTON,DC 20007. USAF,INST PATHOL,DEPT GASTROINTESTINAL PATHOL,WASHINGTON,DC 20330. NR 28 TC 11 Z9 11 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0002-9270 J9 AM J GASTROENTEROL JI Am. J. Gastroenterol. PD APR PY 1995 VL 90 IS 4 BP 590 EP 596 PG 7 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA QR280 UT WOS:A1995QR28000013 PM 7717317 ER PT J AU SWEET, JM JONES, MP AF SWEET, JM JONES, MP TI INTRAHEPATIC CHOLESTASIS DUE TO TICARCILLIN-CLAVULANATE SO AMERICAN JOURNAL OF GASTROENTEROLOGY LA English DT Letter RP SWEET, JM (reprint author), DEPT MED,DIV GASTROENTEROL,MED GRP 74,4881 SUGAR MAPLE DR,WRIGHT PATTERSON AFB,OH 45433, USA. NR 8 TC 10 Z9 11 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0002-9270 J9 AM J GASTROENTEROL JI Am. J. Gastroenterol. PD APR PY 1995 VL 90 IS 4 BP 675 EP 676 PG 2 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA QR280 UT WOS:A1995QR28000041 PM 7717345 ER PT J AU CLARK, SL HANKINS, GDV DUDLEY, DA DILDY, GA PORTER, TF AF CLARK, SL HANKINS, GDV DUDLEY, DA DILDY, GA PORTER, TF TI AMNIOTIC-FLUID EMBOLISM - ANALYSIS OF THE NATIONAL REGISTRY SO AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY LA English DT Article; Proceedings Paper CT 13th Annual Meeting of the American-Gynecological-and-Obstetrical-Society CY SEP 08-10, 1994 CL HOT SPRINGS, VA SP AMER GYNECOL & OBSTETR DE AMNIOTIC FLUID EMBOLISM; FETAL ASPHYXIA; MATERNAL MORTALITY ID HEMODYNAMIC-ALTERATIONS; HUMAN ANAPHYLAXIS; MECHANISMS AB OBJECTIVE: We analyzed the clinical course and investigated possible pathophysiologic mechanisms of amniotic fluid embolism. STUDY DESIGN: We carried out a retrospective review of medical records. Forty-six charts were analyzed for 121 separate clinical variables. RESULTS: Amniotic fluid embolism occurred during labor in 70% of the women, after vaginal delivery in 11%, and during cesarean section after delivery of the infant in 19%. No correlation was seen with prolonged labor or oxytocin use. A significant relation was seen between amniotic fluid embolism and male fetal sex. Forty-one percent of patients gave a history of allergy or atopy. Maternal mortality was 61%, with neurologically intact survival seen in 15% of women. Of fetuses in utero at the time of the event, only 39% survived. Clinical and hemodynamic manifestations were similar to those manifest in anaphylaxis and septic shock. CONCLUSIONS: Intact maternal or fetal survival with amniotic fluid embolism is rare. The striking similarities between clinical and hemodynamic findings in amniotic fluid embolism and both anaphylaxis and septic shock suggest a common pathophysiologic mechanism for all these conditions. Thus the term amniotic fluid embolism appears to be a misnomer. C1 UNIV UTAH,DEPT OBSTET & GYNECOL,SALT LAKE CITY,UT. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX. LATTER DAY ST HOSP,INTERMT HLTH CARE PERINATAL CTR,DIV MATERNAL FETAL MED,SALT LAKE CITY,UT 84143. NR 28 TC 273 Z9 302 U1 2 U2 8 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0002-9378 J9 AM J OBSTET GYNECOL JI Am. J. Obstet. Gynecol. PD APR PY 1995 VL 172 IS 4 BP 1158 EP 1169 DI 10.1016/0002-9378(95)91474-9 PN 1 PG 12 WC Obstetrics & Gynecology SC Obstetrics & Gynecology GA QU858 UT WOS:A1995QU85800009 PM 7726251 ER PT J AU HAVLIN, KA KUHN, JG KOELLER, J BOLDT, DH CRAIG, JB BROWN, TD WEISS, GR CAGNOLA, J PHILLIPS, J HARMAN, G HARDY, J VONHOFF, DD AF HAVLIN, KA KUHN, JG KOELLER, J BOLDT, DH CRAIG, JB BROWN, TD WEISS, GR CAGNOLA, J PHILLIPS, J HARMAN, G HARDY, J VONHOFF, DD TI DEOXYSPERGUALIN - PHASE-I CLINICAL, IMMUNOLOGICAL AND PHARMACOKINETIC STUDY SO ANTI-CANCER DRUGS LA English DT Article DE DEOXYSPERGUALIN; PHARMACOKINETICS; PHASE I TRIAL ID HEART-TRANSPLANTATION; ANTITUMOR-ACTIVITY; GRAFT-SURVIVAL; 15-DEOXYSPERGUALIN; SPERGUALIN; INVIVO; LYMPHOCYTES; RATS; MICE; CYCLOSPORINE AB Deoxyspergualin (DSG) is an analog of the polyamine spergualin with preclinical evidence of activity in murine and human tumor models. This phase I study examined a 120 h continuous infusion schedule in 56 patients with refractory solid tumors at doses ranging from 80 to 2792 mg/m(2)/day. Dose-limiting toxicity was reversible hypotension and appeared to be associated with plasma levels of DSG > 4 mu g/ml. Other dose-dependent effects noted were pruritus and circumoral paresthesias. Myelosuppression and gastrointestinal toxicities were mild and sporadic. Two patients with refractory head and neck cancer had minor responses. The recommended phase II dose on this schedule is 1800 mg/m(2). Additional monitoring to identify immunologic properties included immunophenotyping of peripheral lymphocytes and cytotoxic activity by means of standard Cr-51-release assays. These studies revealed a non-dose-dependent increase in the number of cells expressing T cell antigens predominantly the T suppressor (CD8) phenotype posttreatment. In three patients, a mild increase in LAK activity was noted post-treatment without a consistent relationship to dose or change in cell surface antigens. Pharmacokinetic studies were completed on 26 patients ranging from doses of 80 to 2792 mg/m(2). The average plasma concentration ranged from 0.07 to 7 mu g/ml. DSG was rapidly cleared from the plasma with a mean terminal half-life of 1.9 h. Mean total body clearance was 25.24 I/h/m(2). Further in vivo immunologic studies should be pursued while the agent is studied in fixed dosage phase II clinical trials. C1 UNIV TEXAS,HLTH SCI CTR,DEPT MED ONCOL,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,MED ONCOL SERV,SAN ANTONIO,TX 78236. NR 29 TC 8 Z9 8 U1 0 U2 0 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0959-4973 J9 ANTI-CANCER DRUG JI Anti-Cancer Drugs PD APR PY 1995 VL 6 IS 2 BP 229 EP 236 DI 10.1097/00001813-199504000-00006 PG 8 WC Oncology; Pharmacology & Pharmacy SC Oncology; Pharmacology & Pharmacy GA QU087 UT WOS:A1995QU08700006 PM 7795272 ER PT J AU COHEN, H ALLEN, JR CONGDON, SL JENKINS, HA AF COHEN, H ALLEN, JR CONGDON, SL JENKINS, HA TI OSCILLOPSIA AND VERTICAL EYE-MOVEMENTS IN TULLIOS PHENOMENON SO ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY LA English DT Article AB Background: Pure tones stimulated oscillopsia in a 30-year-old man with bilateral hearing loss and Tullio's phenomenon. Design: The subject's eye movements were recorded with electro-oculography while he was seated with his head stabilized facing a visual array. Pure tones were given in each ear, individually, from 500 to 2000 Hz, 90 to 110 dB. The subject reported the intensity of oscillopsia, if any, during each trial. He was also tested while standing on a force platform and receiving pure tones. Results: No increased postural sway was found, but oscillopsia and vertical eye movements followed stimulation to the more impaired ear. Conclusions: These results support the hypothesis that Tullio's phenomenon is caused by inner ear pathology and suggest that oscillopsia is caused by the occurrence of unplanned vertical eye movements, the perceptual consequences of which were unexpected. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP COHEN, H (reprint author), BAYLOR COLL MED,DEPT OTOLARYNGOL & COMMUN SCI,1 BAYLOR PLAZA,HOUSTON,TX 77030, USA. NR 15 TC 3 Z9 3 U1 0 U2 2 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0886-4470 J9 ARCH OTOLARYNGOL JI Arch. Otolaryngol. Head Neck Surg. PD APR PY 1995 VL 121 IS 4 BP 459 EP 462 PG 4 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA QR814 UT WOS:A1995QR81400013 PM 7702822 ER PT J AU NUNNELEY, SA FRENCH, J VANDERBEEK, RD STRANGES, SF AF NUNNELEY, SA FRENCH, J VANDERBEEK, RD STRANGES, SF TI THERMAL STUDY OF ANTI-G ENSEMBLES ABOARD F-16 AIRCRAFT IN HOT WEATHER SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Continuing advances in the performance of new fighter aircraft have engendered requirements for more sophisticated protective clothing and life support systems. A major goal is prevention of acceleration-induced loss of consciousness. The USAF's Advanced Technology Enhanced Design G-Ensemble (COMBAT EDGE) increases acceleration tolerance by providing positive pressure to the oxygen mask; the work of pressure breathing is reduced by adding a counter-pressure bladder over the chest. However, the addition of impermeable layers over the chest reduces the area available for evaporation of sweat. This study was designed to determine whether COMBAT EDGE (CE) was demonstrably hotter than standard summer flight clothing (ST) during F-16 sorties in hot weather. Eight male pilots served as volunteer subjects, each flying missions at 1430 and 1745 h on two consecutive days, one day with CE and the other with ST. Data were logged at 1-min intervals for rectal temperature (Tre), skin temperatures at the chest and thigh (Tch and Tth) and air temperatures outside the clothing at the same two sites (Tach and Tath). The weather was stable over the 4 d of data collection with highs of 34-36 degrees C and simultaneous dewpoints of 19-23 degrees C (relative humidity 35-45%). The mean Tach was stable at 28 degrees C in flight, while individual means for Tath ranged from 22 to 25 degrees C. The lower value and greater variability at the thigh reflect its proximity to the air conditioning vent. Despite the differences in air temperature, Tch and Tth remained in the range 34-36 degrees C throughout the flights. Statistical analysis by ANOVA showed no significant effect due to the suit worn (CE vs. ST). The Tre tended to rise during preflight activities and the first half of the flight, and values during three flights reached or exceeded the 38 degrees C threshold recommended as the upper limit for core temperature in crews of high-performance aircraft. Post-study questionnaires showed that the pilots felt that CE was hotter than ST; the failure to demonstrate objective differences may be due in part to the variability of conditions inherent in field studies. The finding of continuously warm skin temperatures and undesirably elevated Tre confirm the growing evidence that advanced aircrew clothing imposes a high degree of thermal isolation which makes cockpit air conditioning a poor means of facilitating aircrew comfort. C1 HEADQUARTERS AIR COMBAT COMMAND,LANGLEY AFB,VA. RP NUNNELEY, SA (reprint author), ARMSTRONG LAB,CFTO,2504 GILLINGHAM DR,SUITE 1,BROOKS AFB,TX 78235, USA. NR 13 TC 4 Z9 5 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 309 EP 312 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700003 PM 7794221 ER PT J AU TUBBIOLO, LJ AF TUBBIOLO, LJ TI TRANSWORLD AIRLINE HIJACKING TO BEIRUT, LEBANON SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Editorial Material RP TUBBIOLO, LJ (reprint author), USAF,NC,410 MED GRP SGNMS,KI SAWER AFB,MI 49843, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD APR PY 1995 VL 66 IS 4 BP 377 EP 378 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA QQ607 UT WOS:A1995QQ60700015 ER PT J AU SAVIT, RM PANICO, RA AF SAVIT, RM PANICO, RA TI CASE-REPORT - SIMULATED THORACIC AORTIC DISSECTION ON MAGNETIC-RESONANCE IN A PATIENT WITH INTERRUPTION OF THE INFERIOR VENA-CAVA SO BRITISH JOURNAL OF RADIOLOGY LA English DT Note AB We present a case of simulated thoracic aortic dissection in a patient with interruption of the inferior vena cava and azygous and hemiazygous continuation. C1 USAF,MED GRP 375,SGHR,BELLEVILLE,IL 62225. RP SAVIT, RM (reprint author), HAHNEMANN UNIV,DEPT DIAGNOST RADIOL,BROAD & VINE ST,MAIL STOP 206,PHILADELPHIA,PA 19102, USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU BRITISH INST RADIOLOGY PI LONDON PA 36 PORTLAND PLACE, LONDON, ENGLAND W1N 4AT SN 0007-1285 J9 BRIT J RADIOL JI Br. J. Radiol. PD APR PY 1995 VL 68 IS 808 BP 425 EP 427 PG 3 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA QR524 UT WOS:A1995QR52400016 PM 7795982 ER PT J AU DECKRO, RF HEBERT, JE VERDINI, WA GRIMSRUD, PH VENKATESHWAR, S AF DECKRO, RF HEBERT, JE VERDINI, WA GRIMSRUD, PH VENKATESHWAR, S TI NONLINEAR TIME COST TRADEOFF MODELS IN PROJECT-MANAGEMENT SO COMPUTERS & INDUSTRIAL ENGINEERING LA English DT Article ID PROGRAMMING SOFTWARE AB In this paper we develop a series of nonlinear time/cost tradeoff models for project management. A base model with quadratic cost relations is developed and then extended to include other operational considerations. The use of nonlinear functions to describe time/cost relationships in project scheduling environments permits a more accurate representation of the operational setting than is possible with linear or piecewise linear approximations. Examples of the models presented are solved directly with commercially available nonlinear programming codes. C1 UNIV AKRON,COLL BUSINESS,DEPT MANAGEMENT,AKRON,OH 44325. ARIZONA STATE UNIV,COLL BUSINESS,DEPT DECIS & INFORMAT SYST,TEMPE,AZ 85287. POSTENS SENTRALLEDELSE,N-0107 OSLO,NORWAY. RP DECKRO, RF (reprint author), USAF,INST TECHNOL,DEPT OPERAT SCI,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 34 TC 30 Z9 31 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-8352 J9 COMPUT IND ENG JI Comput. Ind. Eng. PD APR PY 1995 VL 28 IS 2 BP 219 EP 229 DI 10.1016/0360-8352(94)00199-W PG 11 WC Computer Science, Interdisciplinary Applications; Engineering, Industrial SC Computer Science; Engineering GA QP643 UT WOS:A1995QP64300002 ER PT J AU YEN, GG AF YEN, GG TI AUTONOMOUS NEURAL CONTROL IN FLEXIBLE SPACE STRUCTURES SO CONTROL ENGINEERING PRACTICE LA English DT Article DE AUTONOMOUS NEURAL CONTROL; RECONFIGURABLE LEARNING CONTROL; FAULT DETECTION AND IDENTIFICATION; CONTROL APPLICATION IN SPACE STRUCTURES ID ASSOCIATIVE MEMORIES; FORGETTING ALGORITHM; NETWORKS AB The present paper proposes the use of a hybrid connectionist system as a learning controller with reconfiguration capability. Embedded with adjustable time-delays, an adaptive radial basis function network offers an effective modeling technique to capture most of the spatiotemporal interactions among the structure members. A fuzzy-based fault diagnosis system is applied for health monitoring to provide the neural controller with various failure scenarios. Associative memory is incorporated to compensate for catastrophic changes of structural parameters by providing a continuous solution space of acceptable controller configurations. This paper addresses the theoretical foundation of architecture and demonstrates its applicability via specific examples. RP YEN, GG (reprint author), USAF,PHILLIPS LAB,DIV STRUCT & CONTROLS,KIRTLAND AFB,NM 87117, USA. NR 33 TC 9 Z9 9 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0967-0661 J9 CONTROL ENG PRACT JI Control Eng. Practice PD APR PY 1995 VL 3 IS 4 BP 471 EP 483 DI 10.1016/0967-0661(95)00019-Q PG 13 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA QX045 UT WOS:A1995QX04500003 ER PT J AU XIA, XG SUTER, BW AF XIA, XG SUTER, BW TI ON THE HOUSEHOLDER TRANSFORM IN C-M SO DIGITAL SIGNAL PROCESSING LA English DT Article AB In this correspondence, we show the necessary part of the Householder transform in C-m developed by Venkaiah, Krishna, and Paulraj. (C) 1995 Academic Press, Inc. RP XIA, XG (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 1051-2004 J9 DIGIT SIGNAL PROCESS JI Digit. Signal Prog. PD APR PY 1995 VL 5 IS 2 BP 116 EP 117 DI 10.1006/dspr.1995.1010 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA QX723 UT WOS:A1995QX72300005 ER PT J AU STEKLER, HO BECKSTEAD, RW AF STEKLER, HO BECKSTEAD, RW TI MODELING FULLY EMPLOYED ECONOMIES SO ECONOMIC MODELLING LA English DT Article DE MODELING MACROECONOMICS; MODELING EXCESS DEMAND; MODELING WARTIME AB This paper simulates a macroeconomy under conditions of extreme excess demand (such as might occur in wartime). These simulations assume the model represents reality, and that when the model breaks down, that the economy would have experienced severe strains. The WEFA model is used to forecast the behavior of the economy and then to analyze policy options for controlling it. C1 USAF,NATL DEF UNIV,COLL IND,WASHINGTON,DC 20319. RP STEKLER, HO (reprint author), GEORGE WASHINGTON UNIV,WASHINGTON,DC 20052, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0264-9993 J9 ECON MODEL JI Econ. Model. PD APR PY 1995 VL 12 IS 2 BP 205 EP 210 DI 10.1016/0264-9993(95)93448-Z PG 6 WC Economics SC Business & Economics GA QY788 UT WOS:A1995QY78800008 ER PT J AU REE, MJ CARRETTA, TR AF REE, MJ CARRETTA, TR TI GROUP-DIFFERENCES IN APTITUDE FACTOR STRUCTURE ON THE ASVAB SO EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT LA English DT Article ID FIT INDEXES; VALIDITY; EMPLOYMENT; SAMPLE AB Comparisons of aptitude factor structures were made in large, nationally representative samples of young Black, White, and Hispanic men and women who took the Armed Services Vocational Aptitude Battery (ASVAB). Confirmatory factor techniques imposing statistical constraints tested if the loadings of the tests were the same for sex and ethnic groups on a hierarchical general cognitive ability (g) factor and three residualized lower order factors, which included Verbal/Math, Technical Knowledge, and Speed. Tests that reflected content common in high school curricula such as verbal and math, showed little sex or ethnic differences. The most outstanding difference was found between men and women on the lending of the Electronics Information test on g and on the lower order Technical Knowledge factor. In both cases, the loading was almost zero for females and moderate for males. Patterns in high school course enrollment by sex suggested the reason for the differences. Women are much less likely to enroll in courses emphasizing technical knowledge. RP REE, MJ (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 25 TC 24 Z9 25 U1 1 U2 1 PU EDUC PSYCHOL MEASUREMENT PI DURHAM PA 3121 CHEEK ROAD, DURHAM, NC 27704 SN 0013-1644 J9 EDUC PSYCHOL MEAS JI Educ. Psychol. Meas. PD APR PY 1995 VL 55 IS 2 BP 268 EP 277 DI 10.1177/0013164495055002011 PG 10 WC Psychology, Educational; Mathematics, Interdisciplinary Applications; Psychology, Mathematical SC Psychology; Mathematics GA QM650 UT WOS:A1995QM65000011 ER PT J AU BUTLER, RJ BAUGHN, JW AF BUTLER, RJ BAUGHN, JW TI SHROUD TECHNIQUE USING THE TRANSIENT METHOD FOR LOCAL HEAT-TRANSFER MEASUREMENTS SO EXPERIMENTAL HEAT TRANSFER LA English DT Article ID REYNOLDS-NUMBER; CROSS-FLOW; CYLINDER AB A new technique for measuring local heat transfer coefficients on complex-shaped models is described. This technique is referred to as the shroud technique and is a variation on the well-known transient method. The technique involves preheating a model inside a shroud while it is installed in a sind tunnel. The shroud is then ejected, exposing the model to ambient temperature air. The transient temperature on the surface of the model is measured using liquid crystals and recorded with a video system. Although an infinite variety of model shapes can be used, measurements on a cylinder in cross-flow are used to demonstrate this technique. The measurements are compared with earlier measurements, which used different techniques. Good agreement is found at the stagnation point and in the front laminar boundary-layer region. In the separation region, the heat transfer rate is dependent on the thermal boundary condition, which in the transient method is affected by the selection of the nondimensional liquid crystal temperature. In the wake region, it was found that the results depend on the flow development time relative to the transient measurement time. C1 UNIV CALIF DAVIS,DEPT MECH & AERONAUT ENGN,DAVIS,CA. RP BUTLER, RJ (reprint author), USAF ACAD,HQ DFAN,DEPT AERONAUT,2354 FAIRCHILD DR,SUITE 6H24,COLORADO SPRINGS,CO 80840, USA. NR 29 TC 2 Z9 2 U1 0 U2 0 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0891-6152 J9 EXP HEAT TRANSFER JI Exp. Heat Transf. PD APR-JUN PY 1995 VL 8 IS 2 BP 161 EP 173 PG 13 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA TE983 UT WOS:A1995TE98300005 ER PT J AU MILLER, DA PALAZOTTO, AN AF MILLER, DA PALAZOTTO, AN TI NONLINEAR FINITE-ELEMENT ANALYSIS OF COMPOSITE BEAMS AND ARCHES USING A LARGE ROTATION THEORY SO FINITE ELEMENTS IN ANALYSIS AND DESIGN LA English DT Article AB Today's aerospace industry has advanced to the point of using optimum design techniques in virtually all applications. In structural elements, orthotropic fiber composite materials have emerged as lighter, stronger and a more easily manufactured solution to the material application aspect of design. Composites have the distinct advantage of being designed and built to many different desired specifications by varying materials, amount of matrix/fiber and orientation. As with many high performance applications, the analysis techniques of fiber composites are more complicated than for the simpler counterparts. This research has been directed to capturing large cross-sectional rotation incorporating a geometrically nonlinear finite element composite arch model. The model was derived and simplified from a (two-dimensional) 2-D shell theory that has been demonstrated to be accurate for large displacements and only moderate rotations. The current effort uses a similar potential energy based finite element model with through-the-thickness shear. Large rotation kinematics are derived in a vector format which includes a tangent function in the in-plane displacement relationship. Previously published research (Creaghan and Palazotto, 1994; Palazotto and Dennis, 1992) used a small angle approximation to simplify stiffness expressions, limiting those theories to moderate cross-sectional rotation angles. This tangent function is modeled by a series representation of the angle and thereby preserving the existing degrees of freedom. The approach decomposes the Green strain components into convenient forms for inclusion in the potential energy function which is then extended to a nonlinear finite element solution method. The potential energy is simplified by substituting the new rotation function for the previous rotation angle. Riks and displacement control are used to show solutions to several nonlinear arch problems. Other published analytical and experimental results are compared with the current research. This work is a simple extension of a previously published large displacement/moderate rotation theory (Creaghan and Palazotto, 1994), but the results show significant improvement when large cross sectional bending angles are present. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45435. PHILLIPS LAB,CTR SATELLITE ASSESSMENT,KIRTLAND AFB,NM 87117. NR 14 TC 7 Z9 7 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-874X J9 FINITE ELEM ANAL DES JI Finite Elem. Anal. Des. PD APR PY 1995 VL 19 IS 3 BP 131 EP 152 DI 10.1016/0168-874X(95)00004-D PG 22 WC Mathematics, Applied; Mechanics SC Mathematics; Mechanics GA QY421 UT WOS:A1995QY42100001 ER PT J AU LANG, KA SAYLOR, J AF LANG, KA SAYLOR, J TI GASTROINTESTINAL SYMPTOMS AND THE GULF-WAR SYNDROME SO GASTROENTEROLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT GASTROENTEROL,LACKLAND AFB,TX 78236. NR 0 TC 2 Z9 2 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0016-5085 J9 GASTROENTEROLOGY JI Gastroenterology PD APR PY 1995 VL 108 IS 4 SU S BP A23 EP A23 PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA QT863 UT WOS:A1995QT86300087 ER PT J AU WOLFE, PA WILLIAMS, FH CLEMENT, DJ AF WOLFE, PA WILLIAMS, FH CLEMENT, DJ TI OUTPATIENT LAPAROSCOPIC LIVER-BIOPSY - A SAFE PROCEDURE SO GASTROENTEROLOGY LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DIV GASTROENTEROL,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0016-5085 J9 GASTROENTEROLOGY JI Gastroenterology PD APR PY 1995 VL 108 IS 4 SU S BP A41 EP A41 DI 10.1016/0016-5085(95)22830-6 PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA QT863 UT WOS:A1995QT86300161 ER PT J AU HAUPT, RL AF HAUPT, RL TI AN INTRODUCTION TO GENETIC ALGORITHMS FOR ELECTROMAGNETICS SO IEEE ANTENNAS AND PROPAGATION MAGAZINE LA English DT Article AB This article is a tutorial on using genetic algorithms to optimize antenna and scattering patterns. Genetic algorithms are ''global'' numerical-optimization methods, patterned after the natural processes of genetic recombination and evolution. The algorithms encode each parameter into binary sequences, called a gene, and a set of genes is a chromosome. These chromosomes undergo natural selection, mating, and mutation, to arrive at the final optimal solution. After providing a detailed explanation of how a genetic algorithm works, and a listing of a MATLAB code, the article presents three examples. These examples demonstrate how to optimize antenna patterns and backscattering radar-cross-section patterns. Finally, additional details about algorithm design are given. RP HAUPT, RL (reprint author), USAF ACAD,DFEE,DEPT ELECT ENGN,2354 FAIRCHILD DR,SUITE 2F6,COLORADO SPRINGS,CO 80840, USA. NR 16 TC 358 Z9 383 U1 2 U2 9 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1045-9243 J9 IEEE ANTENNAS PROPAG JI IEEE Antennas Propag. Mag. PD APR PY 1995 VL 37 IS 2 BP 7 EP 15 DI 10.1109/74.382334 PG 9 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA QW585 UT WOS:A1995QW58500003 ER PT J AU SIOURIS, GM LEE, JG CHOI, JW AF SIOURIS, GM LEE, JG CHOI, JW TI DESIGN OF A MODERN PITCH POINTING CONTROL-SYSTEM SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article ID EIGENSTRUCTURE ASSIGNMENT; EIGENVECTOR ASSIGNMENT; OUTPUT-FEEDBACK; LINEAR-SYSTEMS AB The development of a pitch pointing control system for an advanced high performance fighter aircraft using eigenstructure assignment and command generator tracking schemes is presented. A desired eigenstructure is first chosen to achieve a desired decoupling (i.e., pitch attitude and Flight path angle), and to obtain a desired damping and rise time. The command generator tracker is next used to ensure zero steady-state error-to-step commands. The stability robustness to the parameter variations of the closed-loop system is evaluated in the sense of the conditioning of the achieved eigenstructure by using singular value analysis technique. The analysis and synthesis techniques for the pitch pointing control system are illustrated by applying the techniques to F-15 aircraft as a part of the NASA/USAF program named ACTIVE (Advanced Controls for Integrated Vehicles). C1 SEOUL NATL UNIV,ENGN RES CTR ADV CONTROL & INSTRUMENTAT,KWANAK KU,SEOUL 151742,SOUTH KOREA. USAF,INST TECHNOL,CTR AERONAUT SYST,XRES,WRIGHT PATTERSON AFB,OH 45433. NR 21 TC 13 Z9 13 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD APR PY 1995 VL 31 IS 2 BP 730 EP 738 DI 10.1109/7.381920 PG 9 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA QW718 UT WOS:A1995QW71800021 ER EF