FN Thomson Reuters Web of Science™ VR 1.0 PT J AU SNIEZEK, JH COATS, DW SMALL, EB AF SNIEZEK, JH COATS, DW SMALL, EB TI KYAROIKEUS-CETARIUS N-G, N-SP - A PARASITIC CILIATE FROM THE RESPIRATORY-TRACT OF ODONTICETE CETACEA SO JOURNAL OF EUKARYOTIC MICROBIOLOGY LA English DT Article DE CILIATE; DOLPHIN; ETHOLOGY; PARASITE; PHYLLOPHARYNGEA; WHALE AB Examination of mucus discharged from the blowholes of live odonticete Cetacea and material collected from nasal orifices of dead hosts routinely revealed infestations of a large spindle-shaped ciliate, Kyaroikeus cetarius n. g., n. sp. These ciliates had a prominent posterior podite and were holotrichously ciliated except for a conspicuous bipolar stripe extending along the left margin of the cell. Most specimens were free-swimming and moved slowly through freshly collected mucus, but some individuals were attached to host cells or cellular debris by a transparent thread secreted from the podite. The oral architecture of protargol-impregnated K. cetarius consisted of one preoral and two circumoral kineties set within a deep oral cavity continuous with an extensive, posteriorly directed cytopharynx. Somatic kineties were composed entirely of monokinetids and formed an expansive right ciliary field covering most of the cell surface, a reduced left ciliary field adjacent to the oral cavity, and a group of four kinetal fragments located mid-ventrally within a shallow pocket. Subkinetal microtubules were associated with the kineties of the right and left fields, and the non-ciliated stripe was underlain by a series of longitudinal fibers. The ciliate's large, heteromeric macronucleus was centrally positioned and clearly evident in living or stained specimens, while the ellipsoid micronucleus was located adjacent to the cytopharynx and often inconspicuous. K. cetarius has several morphological attributes typical of phyllopharyngian ciliates (e.g., adhesive organelle, heteromeric macronucleus, somatic kineties of monokinetids, subkinetal microtubules), and, except for its nearly holotrichous ciliation, most closely resembles dysteriine ciliates. C1 UNIV MARYLAND,COLLEGE PK,MD 20742. RP SNIEZEK, JH (reprint author), SMITHSONIAN ENVIRONM RES CTR,POB 28,EDGEWATER,MD 21037, USA. NR 35 TC 7 Z9 7 U1 0 U2 0 PU SOC PROTOZOOLOGISTS PI POTOMAC PA 12263 GREENLEAF AVE, POTOMAC, MD 20854 SN 1066-5234 J9 J EUKARYOT MICROBIOL JI J. Eukaryot. Microbiol. PD MAY-JUN PY 1995 VL 42 IS 3 BP 260 EP 268 DI 10.1111/j.1550-7408.1995.tb01577.x PG 9 WC Microbiology SC Microbiology GA RD345 UT WOS:A1995RD34500014 ER PT J AU UBELAKER, DH OWSLEY, DW HOUCK, MM CRAIG, E GRANT, W WOLTANSKI, T FRAM, R SANDNESS, K PEERWANI, N AF UBELAKER, DH OWSLEY, DW HOUCK, MM CRAIG, E GRANT, W WOLTANSKI, T FRAM, R SANDNESS, K PEERWANI, N TI THE ROLE OF FORENSIC ANTHROPOLOGY IN THE RECOVERY AND ANALYSIS OF BRANCH-DAVIDIAN COMPOUND VICTIMS - RECOVERY PROCEDURES AND CHARACTERISTICS OF THE VICTIMS SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE PHYSICAL ANTHROPOLOGY; BRANCH DAVIDIAN; HUMAN IDENTIFICATION AB Anthropological contributions to the investigation of the events at the Branch Davidian Compound near Waco, Texas in early 1993, were of two major types: the recovery of human remains from the site and the analysis of most of those individuals at the Medical Examiner's Office in Fort Worth, Texas. This paper describes the role of forensic anthropology in the recovery and analysis of Branch Davidian Compound victims and the recovery procedures and characteristics of the victims. C1 FBI LAB,HAIRS & FIBRES UNIT,WASHINGTON,DC. MED EXAMINER PROGRAM,FRANKFORT,KY. USA,CENT IDENTIFICAT LAB,HONOLULU,HI. TARRANT CTY MED EXAMINERS OFF,FT WORTH,TX. RP UBELAKER, DH (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ANTHROPOL,WASHINGTON,DC 20560, USA. NR 2 TC 16 Z9 16 U1 3 U2 12 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAY PY 1995 VL 40 IS 3 BP 335 EP 340 PG 6 WC Medicine, Legal SC Legal Medicine GA RB239 UT WOS:A1995RB23900001 PM 7782737 ER PT J AU OWSLEY, DW UBELAKER, DH HOUCK, MM SANDNESS, KL GRANT, WE CRAIG, EA WOLTANSKI, TJ PEERWANI, N AF OWSLEY, DW UBELAKER, DH HOUCK, MM SANDNESS, KL GRANT, WE CRAIG, EA WOLTANSKI, TJ PEERWANI, N TI THE ROLE OF FORENSIC ANTHROPOLOGY IN THE RECOVERY AND ANALYSIS OF BRANCH-DAVIDIAN COMPOUND VICTIMS - TECHNIQUES OF ANALYSIS SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE PHYSICAL ANTHROPOLOGY; HUMAN IDENTIFICATION; MASS DISASTER; BRANCH DAVIDIANS; COMMINGLED REMAINS; TRAUMA AB The recovery and analysis of human remains from the Branch Davidian Compound, Mount Carmel, Texas, was a multidisciplinary team effort. This presentation deals with one aspect of the forensic anthropological contribution to this collaborative endeavor-the examination and inventory of human skeletal remains and the interpretation of these osteological data. Briefly described first are the content and format of the skeletal inventory and the examination procedures used for data collection. Two subsequent sections illustrate the use of these data to determine (a) age, sex, ancestry, stature, and other distinguishing characteristics, and (b) the presence and nature of any premortem, perimortem, and postmortem trauma. The next section shows how these findings assist in establishing positive identification through, for example, comparison with medical, dental, and other background records, especially comparison of premortem and postmortem radiographs of bones or dentition. In this context, we consider also the sorting of commingled remains, which includes preliminary assessment of rapidly decomposing remains prior to autopsy to preserve information crucial to identification. C1 FBI LAB,WASHINGTON,DC. USA,CENT IDENTIFICAT LAB,HONOLULU,HI. MED EXAMINER PROGRAM,FRANKFORT,KY. TARRANT CTY MED EXAMINERS OFF,FT WORTH,TX. RP OWSLEY, DW (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ANTHROPOL,MAIL STOP 112,WASHINGTON,DC 20560, USA. NR 12 TC 15 Z9 15 U1 2 U2 13 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAY PY 1995 VL 40 IS 3 BP 341 EP 348 PG 8 WC Medicine, Legal SC Legal Medicine GA RB239 UT WOS:A1995RB23900002 PM 7782738 ER PT J AU UBELAKER, OA ADAMS, BJ AF UBELAKER, OA ADAMS, BJ TI DIFFERENTIATION OF PERIMORTEM AND POSTMORTEM TRAUMA USING TAPHONOMIC INDICATORS SO JOURNAL OF FORENSIC SCIENCES LA English DT Note DE PHYSICAL ANTHROPOLOGY; PERI POSTMORTEM TRAUMA; TAPHONOMY; BUTTERFLY FRACTURE; FORENSIC ANTHROPOLOGY AB Skeletal remains discovered at a construction site in Georgia display classic ''butterfly'' fractures on several long bones. Although this fracture pattern is usually associated with perimortem trauma, in this case taphonomic indicators demonstrate that they can also occur on dry defleshed bone. Variations in bone color at the fracture sites indicate recent postmortem trauma. Analysis of the directions of force and points of impact indicates that the bones were most likely disarticulated when the trauma occurred. C1 UNIV TENNESSEE,KNOXVILLE,TN. RP UBELAKER, OA (reprint author), SMITHSONIAN INST,DEPT ANTHROPOL,NMNH MRC 112,WASHINGTON,DC 20560, USA. NR 2 TC 33 Z9 35 U1 5 U2 18 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAY PY 1995 VL 40 IS 3 BP 509 EP 512 PG 4 WC Medicine, Legal SC Legal Medicine GA RB239 UT WOS:A1995RB23900035 PM 7782760 ER PT J AU ITO, K HUBER, KP YOSHINO, K OGAWA, M MORIOKA, Y AF ITO, K HUBER, KP YOSHINO, K OGAWA, M MORIOKA, Y TI IDENTIFICATION OF 2 (3)PI(U)[-X(3)SIGMA(-)(G) TRANSITIONS OF O-16(2) NEAR 93,850 AND 95,360 CM(-1) SO JOURNAL OF MOLECULAR SPECTROSCOPY LA English DT Article ID ELECTRON ENERGY-LOSS; RYDBERG STATES; MOLECULAR-OXYGEN; MULTIPHOTON IONIZATION; OSCILLATOR-STRENGTHS; HIGH-RESOLUTION; PHOTOELECTRON-SPECTROSCOPY; 2-PHOTON SPECTROSCOPY; DIATOMIC-MOLECULES; POTENTIAL CURVES AB The one-photon absorption spectrum of molecular oxygen in the photoionization threshold region has been recorded at high resolution (lambda/Delta lambda = 2 X 10(5)) against the background continuum of a synchrotron radiation source. The room temperature spectrum as well as the rotationally cold absorption of a supersonically expanding jet (T-rot approximate to 20 K) have been registered on photographic plates. The drastically reduced complexity of the jet spectra has led to the unambiguous identification of two (3) Pi(u) vibronic levels of O-16(2) at 93 850 and 95 360 cm(-1); rotational and Lambda-type doubling parameters have been determined. In addition, the upper state of a previously reported strong band of O-16(2) (O-18(2)) at 86 733 (86 697) cm(-1) (Ogawa et al., J. Mol. Spectrosc. 55, 425-429, 1975) has tentatively been attributed to upsilon = 0 of the bound second adiabatic (3) Pi(u) potential arising from the strong interaction of the ...pi(u)(4) pi(g) . 3p sigma(u) Rydberg with the ...pi(u)(4) pi(g) sigma(u) valence configuration (Buenker et al., Chem. Phys. Lett. 34, 225-231, 1975; 42, 383-389, 1976). (C) 1995 Academic Press, Inc. C1 NATL RES COUNCIL CANADA,STEACIE INST MOLEC SCI,OTTAWA,ON K1A 0R6,CANADA. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV TSUKUBA,INST PHYS,TSUKUBA,IBARAKI 305,JAPAN. RP ITO, K (reprint author), NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,1-1 OHO,TSUKUBA,IBARAKI 305,JAPAN. NR 50 TC 6 Z9 6 U1 0 U2 2 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 MAY PY 1995 VL 171 IS 1 BP 1 EP 12 DI 10.1006/jmsp.1995.1098 PG 12 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA QW672 UT WOS:A1995QW67200001 ER PT J AU BURNS, JR WEITZMAN, SH GRIER, HJ MENEZES, NA AF BURNS, JR WEITZMAN, SH GRIER, HJ MENEZES, NA TI INTERNAL FERTILIZATION, TESTIS AND SPERM MORPHOLOGY IN GLANDULOCAUDINE FISHES (TELEOSTEI, CHARACIDAE, GLANDULOCAUDINAE) SO JOURNAL OF MORPHOLOGY LA English DT Article ID GAMETIC ASSOCIATION; LEPIDOGALAXIAS-SALAMANDROIDES; EXTERNAL FERTILIZATION; ULTRASTRUCTURE; SPERMATOZOON; PHYLOGENY; SCULPIN; PISCES AB In this report, the gonads of 32 glandulocaudine species, representing 18 genera, are compared with 11 outgroup characiform species. Through the presence of spermatozoa within the ovarian cavity, internal fertilization of the female is confirmed for the 16 genera for which mature ovaries were available. No outgroup ovary studied contains spermatozoa. All mature glandulocaudine testes have a large portion of the posterior testis, which is devoid of developing germ cells and spermatocysts (aspermatogenic), devoted to sperm storage, with the degree of partitioning in that region varying greatly within the group. All outgroup species examined have spermatozoa with spherical nuclei. With the exception of the species of the genus Planaltina, which also have spherical nuclei, all glandulocaudines have elongated nuclei, which vary among the species from 3.6 mu m to 31.6 mu m in length. Distinct sperm packets (spermatozeugmata) are formed in five genera by two different methods. In the genera Xenurobrycon, Tyttocharax, and Scopaeocharax, all of the tribe Xenurobryconini, the spermatozeugmata are formed within the spermatocysts and released fully formed. In all genera of the tribe Glandulocaudini, which includes Glandulocauda and Mimagoniates, loose spermatozoa are released which cluster into spermatozeugmata within the posterior storage areas. These morphological specializations are discussed within a phylogenetic framework as adaptations for internal fertilization and are hypothesized to be independently derived. (C) 1995 Wiley-Liss, Inc. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT VERTEBRATE ZOOL,WASHINGTON,DC 20560. FLORIDA MARINE RES INST,DEPT ENVIRONM PROTECT,ST PETERSBURG,FL 33701. UNIV SAO PAULO,INST BIOCIENCIAS,DEPT ZOOL,BR-01452990 S JOSE CAMPOS,BRAZIL. RP BURNS, JR (reprint author), GEORGE WASHINGTON UNIV,DEPT BIOL SCI,WASHINGTON,DC 20052, USA. NR 61 TC 64 Z9 69 U1 1 U2 4 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0362-2525 J9 J MORPHOL JI J. Morphol. PD MAY PY 1995 VL 224 IS 2 BP 131 EP 145 DI 10.1002/jmor.1052240203 PG 15 WC Anatomy & Morphology SC Anatomy & Morphology GA QX895 UT WOS:A1995QX89500002 ER PT J AU BURNEY, DA DECANDIDO, RV BURNEY, LP KOSTELHUGHES, FN STAFFORD, TW JAMES, HF AF BURNEY, DA DECANDIDO, RV BURNEY, LP KOSTELHUGHES, FN STAFFORD, TW JAMES, HF TI A HOLOCENE RECORD OF CLIMATE-CHANGE, FIRE ECOLOGY AND HUMAN ACTIVITY FROM MONTANE FLAT TOP BOG, MAUI SO JOURNAL OF PALEOLIMNOLOGY LA English DT Article DE HAWAII; POLLEN; FIRE ECOLOGY; TRACE METALS; TRADE WIND INVERSION; PALEOECOLOGY ID MADAGASCAR AB A sediment core from a high-elevation bog on Maui in the Hawaiian Islands contains evidence for drier conditions between 9.4-5.8 kyr BP, followed by a wetter interval between 5.8-2.2 kyr BP, and a variable late Holocene. These precipitation changes may be a reflection of vertical displacements of the upper boundary of the mid-Pacific Trade Wind Inversion (TWI) cloud layer. Fires, probably volcanically ignited, occurred in the forests prior to human arrival. Polynesian activity in this high-elevation, remote site was apparently limited, with no pollen, charcoal, or sedimentological evidence for local anthropogenic disturbance. After European contact, grass fires increased and introduced plant species invaded the site. Values for Cd, Cu, Pb, and Zn in sediments throughout the Holocene indicate low trace-metal deposition from atmospheric particulates at the site, even in the twentieth century. C1 UNIV COLORADO,INST ARCTIC & ALPINE RES,BOULDER,CO 80309. SMITHSONIAN INST,NATL MUSEUM NAT HIST,MRC NHB 116,WASHINGTON,DC 20560. RP BURNEY, DA (reprint author), FORDHAM UNIV,DEPT BIOL SCI,BRONX,NY 10458, USA. NR 28 TC 28 Z9 29 U1 2 U2 5 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0921-2728 J9 J PALEOLIMNOL JI J. Paleolimn. PD MAY PY 1995 VL 13 IS 3 BP 209 EP 217 DI 10.1007/BF00682765 PG 9 WC Environmental Sciences; Geosciences, Multidisciplinary; Limnology SC Environmental Sciences & Ecology; Geology; Marine & Freshwater Biology GA RP373 UT WOS:A1995RP37300002 ER PT J AU WANG, C LU, B ZUO, J ZHANG, S TAN, S SUZUKI, M CHASE, WT AF WANG, C LU, B ZUO, J ZHANG, S TAN, S SUZUKI, M CHASE, WT TI STRUCTURAL AND ELEMENTAL ANALYSIS ON THE NANOCRYSTALLINE SNO2 IN THE SURFACE OF ANCIENT CHINESE BLACK MIRRORS SO NANOSTRUCTURED MATERIALS LA English DT Article AB There were two sorts of black mirrors in ancient China: Heiqigu and common black mirrors (CBM). Their surface layers of about 100 mu m thickness were studied by XRD, HREM, and Raman spectrometry. It was proved that the layers were mainly composed of nanometer-sized particles of Sn-1-x(CuFePbSi)(x)O-2 (about 5 nm) with cassiterite structure. These results are of interest for further investigation into the corrosion-resisting property and formation mechanism of the nanometer structure. C1 TEIKYO UNIV,YAMANASHI RES INST CULTURAL PROPERTIES,ISAWA,YAMANASHI 406,JAPAN. SMITHSONIAN INST,FREER GALLERY ART,WASHINGTON,DC 20560. SMITHSONIAN INST,ARTHUR M SACKLER GALLERY,WASHINGTON,DC 20560. RP WANG, C (reprint author), UNIV SCI & TECHNOL CHINA,ACAD SINICA,STRUCT RES LAB,HEFEI 230026,PEOPLES R CHINA. NR 8 TC 19 Z9 20 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0965-9773 J9 NANOSTRUCT MATER JI Nanostruct. Mater. PD MAY PY 1995 VL 5 IS 4 BP 489 EP 496 DI 10.1016/0965-9773(95)00258-G PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA RC757 UT WOS:A1995RC75700012 ER PT J AU BADGLEY, C BEHRENSMEYER, AK AF BADGLEY, C BEHRENSMEYER, AK TI 2 LONG GEOLOGICAL RECORDS OF CONTINENTAL ECOSYSTEMS SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article; Proceedings Paper CT Symposium on Long Records of Land Biotas: A Comparison of Wyoming/Montana Paleogene and Siwalik Miocene Sequences, at the 5th North-American Paleontological Convention CY JUL, 1992 CL CHICAGO, IL ID MAGNETIC POLARITY STRATIGRAPHY; PALEOCENE-EOCENE BOUNDARY; ALLUVIAL SIWALIK ROCKS; NORTHERN PAKISTAN; SEDIMENTS; DEPOSITS; TIME; BIOSTRATIGRAPHY; NEOGENE; EVENTS AB The early Paleogene continental sequence of northwestern Wyoming and south central Montana (USA) and the Neogene Siwalik sequence of northern Pakistan are exceptionally long, fossiliferous, and well studied in terms of geology, paleontology, mammalian evolution, paleoecology, and paleoclimatology. Each record spans about 15 myr of alluvial deposition in a foreland basin. The fluvial systems differed in size, drainage of floodplains, and change in alluvial architecture through time. Both sequences preserved abundant paleosols, which are a source of paleoclimatic signals in stable isotopes from soil carbonates. Fossil collections from both records are dominated by vertebrate remains and especially by mammals; the Paleogene sequence also preserved abundant floral remains. Patterns of vertebrate preservation differed markedly between the two sequences, placing inherent limitations on paleoecological reconstruction and on the scope of evolutionary studies of mammalian lineages. In this introductory paper, we summarize the major similarities and differences in geologic setting, chronology and time resolution, and mammalian faunal composition of these two long sequences. Finally, we present a brief overview of the organization of papers in this special issue. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT PALEOBIOL,WASHINGTON,DC 20560. RP BADGLEY, C (reprint author), UNIV MICHIGAN,MUSEUM PALEONTOL,ANN ARBOR,MI 48109, USA. NR 47 TC 13 Z9 13 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY PY 1995 VL 115 IS 1-4 BP 1 EP 11 DI 10.1016/0031-0182(94)00104-G PG 11 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA RE440 UT WOS:A1995RE44000001 ER PT J AU WILLIS, BJ BEHRENSMEYER, AK AF WILLIS, BJ BEHRENSMEYER, AK TI FLUVIAL SYSTEMS IN THE SIWALIK MIOCENE AND WYOMING PALEOGENE SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article; Proceedings Paper CT Symposium on Long Records of Land Biotas: A Comparison of Wyoming/Montana Paleogene and Siwalik Miocene Sequences, at the 5th North-American Paleontological Convention CY JUL, 1992 CL CHICAGO, IL ID NORTHERN PAKISTAN; ALLUVIAL PALEOSOLS; WILLWOOD FORMATION; EOCENE; DEPOSITS; STRATIGRAPHY; INTEGRATION; CHRONOLOGY; EVENTS; ROCKS AB The 3 km thick Miocene Siwalik Group (Himalayan foredeep in northern Pakistan) and the 2 km thick Paleogene Fort Union/Willwood formations (Bighorn Basin in Wyoming) both preserve long records of fluvial deposition adjacent to rising mountain belts. Depositional environments and associated habitats change across large basins along with changing physiography and with the location of different river systems that may have varied greatly in patterns of channel deposition and the drainage of adjacent floodplain areas. Deposits exposed in these two basins provide very different records of shifting paleoenvironments and patterns of basin filling. These differences reflect distinct patterns and scales of depositional environments, the nature of the exposures, and the types of sedimentologic studies that have been carried out in each basin. The Siwalik Group fills a basin that extended at least 1000 km along its axis and 150-250 km away from the mountain front. Comparison of Siwalik deposits and modern drainages in the Himalayan foredeep suggests the ancient Siwalik basin was filled by large rivers that deposited low gradient sediment fans covering areas on the order of 1000 km(2), and by smaller intrafan rivers with more poorly drained floodplains. Despite the scale of these river systems relative to Siwalik exposures in Pakistan, transitions between different systems have been recognized. Deposits of coeval river systems in the Siwalik Basin show pronounced differences in alluvial architecture, the character of overbank deposits, and the abundance and taphonomy of organic remains. In contrast, the Bighorn Basin in Wyoming is a relatively small intermontane foreland basin extending 200 km along its axis and about 80 km across. Bighorn Basin strata were deposited by a river that flowed south to north along the basin axis and by smaller rivers that flowed transverse to the basin axis. Much of this basin is exposed and thus it is possible to reconstruct changing patterns of deposition and environments through time in more detail than in the Siwalik Basin. These patterns indicate changes in basin-wide drainage conditions and environments through time, but there are also important differences among coeval strata. Upsection shifts in environments and vertebrate faunas within both the Siwalik and Bighorn Basins may reflect tectonic or climatic forcing, but this comparison emphasizes the importance of recognizing deposits from different contemporaneous river systems before inferring such large-scale controls on paleoecological change through time. C1 SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560. UNIV TEXAS,BUR ECON GEOL,AUSTIN,TX 78713. SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560. NR 72 TC 22 Z9 23 U1 0 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY PY 1995 VL 115 IS 1-4 BP 13 EP 35 DI 10.1016/0031-0182(94)00105-H PG 23 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA RE440 UT WOS:A1995RE44000002 ER PT J AU BEHRENSMEYER, AK WILLIS, BJ QUADE, J AF BEHRENSMEYER, AK WILLIS, BJ QUADE, J TI FLOODPLAINS AND PALEOSOLS OF PAKISTAN NEOGENE AND WYOMING PALEOGENE DEPOSITS - A COMPARATIVE-STUDY SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article; Proceedings Paper CT Symposium on Long Records of Land Biotas: A Comparison of Wyoming/Montana Paleogene and Siwalik Miocene Sequences, at the 5th North-American Paleontological Convention CY JUL, 1992 CL CHICAGO, IL ID WILLWOOD FORMATION; LOWER EOCENE; ALLUVIAL PALEOSOLS; NORTHERN PAKISTAN; BIGHORN BASIN; USA; STRATIGRAPHY; INTEGRATION; PALEOECOLOGY; ASSEMBLAGES AB Comparative study of fossil-bearing fluvial deposits in the Eocene Willwood Formation of northern Wyoming and the Miocene Chinji Formation of northern Pakistan indicate how tectonic and climatic processes operating at different scales controlled physical and chemical features of floodplain environments and affected preservation of the paleontological record. The architecture of Willwood Fm. floodplain deposits represents a combination of avulsion-belt sediment packages and overbank sediments that formed alluvial ridges. The architecture of the Chinji Fm. floodplain deposits was controlled by widely distributed crevasse-splay deposition and floodplain topography. Similarities in individual paleosol-bounded overbank sequences from the two formations indicates that the internal structure of such deposits can be independent of channel belt proximity to areas of aggradation. Chinji Fm. paleosols have little vertical zonation and show no consistent pattern of lateral change in relation to major channels, while overbank paleosols in the Willwood Fm. exhibit considerable soil horizon development and a pattern of increasing maturity from alluvial ridge to distal floodplain. The ''pedofacies model'' of Bown and Kraus (1987) based on such lateral trends in the Willwood paleosols is not applicable to the Chinji Fm. Plant and animal fossils are abundant in the Willwood overbank deposits, with vertebrate remains concentrated in paleosol A. horizons. Plant remains are rare in the Chinji Fm. and vertebrate fossils occur primarily in channel fills rather than in paleosols. These differences relate to contrasting patterns of floodplain deposition and to levels of oxidation that controlled penecontemporaneous recycling of organic material, particularly in paleosols. Different large-scale climatic and tectonic controls on temperature and rainfall, water table fluctuations, and soil biota are proposed to account for the differences in organic preservation. Large and small-scale environmental processes also affected spatial and temporal resolution of the organic record, resulting in important differences in the paleoecological and evolutionary information that can be reconstructed from the two sequences. C1 UNIV TEXAS,BUR ECON GEOL,AUSTIN,TX 78713. UNIV ARIZONA,DEPT GEOSCI,TUCSON,AZ 85721. RP BEHRENSMEYER, AK (reprint author), SMITHSONIAN INST,DEPT PALEOBIOL,MRC NHB 121,WASHINGTON,DC 20560, USA. NR 69 TC 51 Z9 58 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY PY 1995 VL 115 IS 1-4 BP 37 EP 60 DI 10.1016/0031-0182(94)00106-I PG 24 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA RE440 UT WOS:A1995RE44000003 ER PT J AU WING, SL ALROY, J HICKEY, LJ AF WING, SL ALROY, J HICKEY, LJ TI PLANT AND MAMMAL DIVERSITY IN THE PALEOCENE TO EARLY EOCENE OF THE BIGHORN BASIN SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article; Proceedings Paper CT Symposium on Long Records of Land Biotas: A Comparison of Wyoming/Montana Paleogene and Siwalik Miocene Sequences, at the 5th North-American Paleontological Convention CY JUL, 1992 CL CHICAGO, IL ID CRETACEOUS-TERTIARY BOUNDARY; WESTERN NORTH-AMERICA; MAGNETIC POLARITY STRATIGRAPHY; CLARKS-FORK-BASIN; CONTINENTAL DEPOSITS; WILLWOOD FORMATION; LEAF-ASSEMBLAGES; FOSSIL RECORD; NEW-MEXICO; USA AB Abundant plant and vertebrate fossils have been recovered from fluvial sediments deposited in the Bighorn Basin, Wyoming, during the first 13 m.y. of the Tertiary. Here we outline and discuss changes in the composition and diversity of floras and faunas during this period, which includes the recovery of terrestrial ecosystems from the K/T boundary extinctions, and later, during the Paleocene-Eocene transition, the greatest global warming of the Cenozoic. Floral diversity has been studied at three levels of spatial resolution: sub-local (at individual collecting sites), local (along a single bed or stratigraphic horizon), and basin-wide (regional). Sub-local diversity shows a moderate increase from the early to late Paleocene, followed by a decrease across the Paleocene/Eocene boundary, then an increase into the later early Eocene. Local heterogeneity was lower in Paleocene backswamp floras, although distinct groups of species dominated in different local fluvial settings such as backswamps and alluvial ridges. Heterogeneity of backswamp forests increased by about 65% from the early to late Wasatchian (early Eocene). The number of plant species inferred from the Bighorn Basin dataset rose gradually from the Puercan to an early Clarkforkian peak of about 40 species, declined sharply to about 25 species by the Clarkforkian/Wasatchian boundary, then rose through the Wasatchian to about 50 species. A regional analysis of mammalian genera shows high turnover and a rapidly increasing number of genera within a million years of the K/T boundary (10-50 genera), a slight decline to 40 genera by the early Clarkforkian, then an increase from 40 to 75 genera by the late Wasatchian. Our analyses found no major extinctions in mammals during the Paleocene and early Eocene in the Bighorn Basin, but a one-third decrease in the number of plant species at about the Paleocene/Eocene boundary. Rates of taxonomic turnover were much higher for mammals than plants. The diversity trends for plants and mammals show little congruence, implying that the two groups responded in a very different manner to post K/T extinction opportunities. There is also little congruence between plant diversity levels and change in mean annual temperature (MAT) as inferred from foliar physiognomy. C1 UNIV CHICAGO,DEPT GEOPHYS SCI,CHICAGO,IL 60637. YALE UNIV,DEPT GEOL & GEOPHYS,NEW HAVEN,CT 06520. RP WING, SL (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST 121,DEPT PALEOBIOL,WASHINGTON,DC 20560, USA. RI Alroy, John/B-4585-2009; OI Wing, Scott/0000-0002-2954-8905 NR 148 TC 88 Z9 92 U1 1 U2 7 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY PY 1995 VL 115 IS 1-4 BP 117 EP 155 DI 10.1016/0031-0182(94)00109-L PG 39 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA RE440 UT WOS:A1995RE44000006 ER PT J AU BADGLEY, C BARTELS, WS MORGAN, ME BEHRENSMEYER, AK RAZA, SM AF BADGLEY, C BARTELS, WS MORGAN, ME BEHRENSMEYER, AK RAZA, SM TI TAPHONOMY OF VERTEBRATE ASSEMBLAGES FROM THE PALEOGENE OF NORTHWESTERN WYOMING AND THE NEOGENE OF NORTHERN PAKISTAN SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article; Proceedings Paper CT Symposium on Long Records of Land Biotas: A Comparison of Wyoming/Montana Paleogene and Siwalik Miocene Sequences, at the 5th North-American Paleontological Convention CY JUL, 1992 CL CHICAGO, IL ID WILLWOOD FORMATION; LOWER EOCENE; ALLUVIAL PALEOSOLS; USA; PALEOECOLOGY; BASIN; INTEGRATION; FLOODPLAIN AB We compare the taphonomy of vertebrate assemblages from two long continental records-the early Paleogene of the Bighorn Basin, Wyoming, and the Neogene Siwalik sequence of northern Pakistan. Both sequences contain a similar array of fluvial facies, and the abundance of these facies differs among formations. We document environments of preservation of vertebrate localities over time to determine comparability of fossil assemblages within and between sequences. Changes in sample size and species richness are noted to reveal potential sampling effects on patterns of faunal turnover. Preservational history determined the environment, sample size, quality of specimens, taxonomic composition, and spatial and temporal resolution of fossil assemblages and thereby the quality of the fossil record and its suitability for further analyses. In both sequences, changes in prevailing taphonomic processes reflect changes in lithofacies and habitat distribution. Correlated changes are found in fossil productivity, species richness, and faunal composition. Both sequences contain some episodes of apparent faunal change in which appearances and disappearances of rare taxa can be attributed principally to changes in sample size. The Paleogene record has high taxonomic resolution (i.e., to genus or species) for most mammalian fossil remains. Temporal and spatial averaging of Paleogene fossil assemblages changes with lithofacies. The Neogene record has higher taxonomic resolution for remains of small mammals (<2 kg) than of large mammals. Ah formations have several fossiliferous facies, with moderate to high degrees of temporal averaging and low to high degrees of spatial averaging. Different preservational circumstances impose different constraints on paleocological and evolutionary analyses. The best opportunities for paleocommunity reconstruction are provided by high taxonomic resolution, large samples, and varied environments of preservation. These circumstances are found in limited portions of each record. The best opportunities for documenting evolution within lineages and species-replacement patterns are provided by high taxonomic resolution, high temporal resolution, and consistent preservational context. These taphonomic attributes pertain to the more common Paleogene mammals, particularly from the rich paleosol localities of the Willwood Formation, and to the more common Neogene small mammals from abandoned-channel fills of the Siwalik record. C1 ALBION COLL,DEPT GEOL,ALBION,MI 49224. HARVARD UNIV,DEPT ANTHROPOL,CAMBRIDGE,MA 02138. SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560. GEOL SURVEY PAKISTAN,ISLAMABAD,PAKISTAN. RP BADGLEY, C (reprint author), UNIV MICHIGAN,MUSEUM PALEONTOL,ANN ARBOR,MI 48109, USA. NR 53 TC 23 Z9 24 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY PY 1995 VL 115 IS 1-4 BP 157 EP 180 DI 10.1016/0031-0182(94)00110-T PG 24 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA RE440 UT WOS:A1995RE44000007 ER PT J AU BADGLEY, C BEHRENSMEYER, AK AF BADGLEY, C BEHRENSMEYER, AK TI PRESERVATIONAL, PALEOECOLOGICAL AND EVOLUTIONARY PATTERNS IN THE PALEOGENE OF WYOMING-MONTANA AND THE NEOGENE OF PAKISTAN SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article; Proceedings Paper CT Symposium on Long Records of Land Biotas: A Comparison of Wyoming/Montana Paleogene and Siwalik Miocene Sequences, at the 5th North-American Paleontological Convention CY JUL, 1992 CL CHICAGO, IL ID SOUTHERN ASIA; EVENTS; SELECTION; FOSSILS; EOCENE AB Contributions to this special issue have compared the tectonic settings, fluvial systems, paleoclimates, paleofloras and faunas, vertebrate taphonomy, and mammalian paleoecology and evolution from two long, continental records of Cenozoic ecosystems. In this concluding paper, we summarize highlights of earlier papers to provide an overview of similarities and differences between these Paleogene and Neogene records. The relative influences of tectonic, climatic, and fluvial processes on lithofacies, environments of fossil preservation, and the productivity of the fossil record are compared for each sequence. Tectonism was the primary control an sediment accumulation rate and the distribution of major depositional environments in each basin. Fossil productivity, species richness, and the distribution of fossil localities among fluvial environments change across formation boundaries in each sequence. The taxonomic, temporal, and spatial resolution of vertebrate assemblages varies among fluvial environments and differs between the two sequences. As a result, the Paleogene record is better suited for detailed study of evolutionary change within local lineages and the Neogene record for detailed paleocommunity reconstruction. Several aspects of biotic change are considered. (1) The timing and magnitude of mammalian faunal turnover in relation to climatic change are evaluated in terms of three models of evolutionary change within ecosystems: Van Valen's ''Red Queen model,'' Stenseth and Maynard Smith's ''stationary model,'' and Vrba's ''turnover-pulse model.'' In both records, climatic change was accompanied by change in faunal composition and ecological structure, but both pulsed and diachronous biotic change, at a resolution of about 0.5 m.y., also occurred over periods when no significant climatic change was discernible. This pattern best matches the predictions of the Red Queen model. (2) In both records, the rate of mammalian faunal turnover (first and last appearances of taxa) is not highly correlated with standing richness, suggesting that paleocommunities were not at equilibrium richness on these time scales. (3) In the Paleogene record, plant species richness declined while mammalian species richness increased. (4) In each sequence, some episodes of mammalian faunal turnover were in step with changes in size or trophic structure, while other changes in faunal composition entailed no corresponding change in ecological structure. While both records would benefit from improved paleoclimatic, temporal, species-level, and ecomorphological resolution, this initial synthesis suggests that both physical and biotic factors were important influences on faunal composition, the timing and rate of turnover, and ecological structure in these paleocommunities. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT PALEOBIOL,WASHINGTON,DC 20560. RP BADGLEY, C (reprint author), UNIV MICHIGAN,MUSEUM PALEONTOL,ANN ARBOR,MI 48109, USA. NR 49 TC 6 Z9 6 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD MAY PY 1995 VL 115 IS 1-4 BP 319 EP 340 DI 10.1016/0031-0182(94)00117-Q PG 22 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA RE440 UT WOS:A1995RE44000014 ER PT J AU HOWARD, JE AF HOWARD, JE TI SADDLE-POINT IONIZATION AND THE RUNGE-LENZ INVARIANT SO PHYSICAL REVIEW A LA English DT Article ID ELECTRIC-FIELD; MAGNETIC-FIELDS; EXCITED ATOMS; RYDBERG ATOMS; HYDROGEN; STATES C1 HARVARD UNIV, SMITHSONIAN ASTROPHYS OBSERV, INST THEORET ATOM & MOLEC PHYS, CAMBRIDGE, MA 02138 USA. RP UTAH STATE UNIV, DEPT MATH & STAT, LOGAN, UT 84322 USA. NR 38 TC 12 Z9 12 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD MAY PY 1995 VL 51 IS 5 BP 3934 EP 3946 DI 10.1103/PhysRevA.51.3934 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RA431 UT WOS:A1995RA43100074 ER PT J AU YOU, L COOPER, J AF YOU, L COOPER, J TI SEMICLASSICAL STUDY OF SPECTRAL EVOLUTION UNDER PROPAGATION IN AN ACTIVE MEDIUM SO PHYSICAL REVIEW A LA English DT Article ID PUMPED 2-LEVEL ATOMS; QUANTUM-THEORY; CONE EMISSION; SUPERFLUORESCENCE; LIGHT; INITIATION; RADIATION C1 UNIV COLORADO, JOINT INST LAB ASTROPHYS, BOULDER, CO 80309 USA. NATL INST STAND & TECHNOL, BOULDER, CO 80309 USA. RP HARVARD SMITHSONIAN CTR ASTROPHYS, INST THEORET ATOM & MOLEC PHYS, 60 GARDEN ST, MS 14, CAMBRIDGE, MA 02138 USA. NR 40 TC 1 Z9 1 U1 0 U2 2 PU AMER PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 2469-9926 EI 2469-9934 J9 PHYS REV A JI Phys. Rev. A PD MAY PY 1995 VL 51 IS 5 BP 4194 EP 4202 DI 10.1103/PhysRevA.51.4194 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA RA431 UT WOS:A1995RA43100104 ER PT J AU COTE, R DALGARNO, A SUN, Y HULET, RG AF COTE, R DALGARNO, A SUN, Y HULET, RG TI PHOTOABSORPTION BY ULTRACOLD ATOMS AND THE SCATTERING LENGTH SO PHYSICAL REVIEW LETTERS LA English DT Article ID TRANSITION C1 RICE UNIV,DEPT PHYS,HOUSTON,TX 77251. RICE UNIV,RICE QUANTUM INST,HOUSTON,TX 77251. RP COTE, R (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 20 TC 70 Z9 70 U1 0 U2 6 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 MAY 1 PY 1995 VL 74 IS 18 BP 3581 EP 3583 DI 10.1103/PhysRevLett.74.3581 PG 3 WC Physics, Multidisciplinary SC Physics GA QV149 UT WOS:A1995QV14900020 ER PT J AU CRISTIAN, VC DONAHUE, RA SOON, WH BALIUNAS, SL HENRY, GW AF CRISTIAN, VC DONAHUE, RA SOON, WH BALIUNAS, SL HENRY, GW TI PULSATION TIME SCALES AND AMPLITUDES IN A SAMPLE OF BRIGHT SEMI-REGULAR VARIABLE-STARS SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC LA English DT Article ID RED VARIABLES AB We have analyzed the differential V-band photometric variations of records up to 8 years long in ten M III semi-regular variable stars. Periodograms constructed from each star's entire record and seasonal intervals were used to find repetitive occurrences of pulsation periods in the range of 10 to 250 days, For every star at least one locus of periods was observed, with many stars showing two distinct distributions of pulsation time scales. The observed pulsation periods and differential V-magnitude semi-amplitudes appear to be correlated such that longer periods correspond to larger semi-amplitudes. C1 CTR EXCELLENCE EDUC,INST RES SCI,MCLEAN,VA 22102. TENNESSEE STATE UNIV,CTR EXCELLENCE INFORMAT SYST,NASHVILLE,TN 37203. RP CRISTIAN, VC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 16 TC 13 Z9 13 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 SN 0004-6280 J9 PUBL ASTRON SOC PAC JI Publ. Astron. Soc. Pac. PD MAY PY 1995 VL 107 IS 711 BP 411 EP 415 DI 10.1086/133569 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QY228 UT WOS:A1995QY22800001 ER PT J AU CLAYTON, GC WHITNEY, BA MEADE, MR BABLER, B BJORKMAN, KS NORDSIECK, KH AF CLAYTON, GC WHITNEY, BA MEADE, MR BABLER, B BJORKMAN, KS NORDSIECK, KH TI LONG-TERM SPECTROSCOPIC AND POLARIMETRIC MONITORING OF R-CORONAE-BOREALIS NEAR MAXIMUM LIGHT SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC LA English DT Article ID STAR; MINIMUM; SAGITTARII; GEOMETRY; DECLINE; DUST AB We have obtained low-resolution visible spectroscopy and polarimetry of R Coronae Borealis covering 8 years from 1986 to 1993 at Pine Bluff Observatory. The spectra clearly show large CN and Ct band variations correlated with pulsational phase and B-V color, similar to those previously seen for RY Sagittarii. During the declines of 1986, 1989 and 1993, the measured polarization increased in a manner consistent with previous declines. However, measurements of the position angle of the polarization in these declines do not support the result of Stanford et al. [ApJ, 325, L9 (1988)] that there is a preferred plane for the dust ejections. Some of the strongest band strengths of CN and C-2 are associated with declines or suspected dust-formation episodes. Many of the lowest band strengths are found in years when no decline takes place. However, large band strengths are not only associated with declines. For instance, in 1991, the band strengths were very large throughout the observing season and significant polarization variations were also seen even though no decline occurred that year. These variations are interpreted as being due to dust-formation episodes not along the Line of sight. It has been suggested that a very large pulsation observed in 1990 may be a small dust-formation episode. The molecular band strengths measured during this pulsation are the largest measured in this study. However, only small variations in polarization were measured during the pulsation cycle. There is also some evidence that the polarization variations are correlated with the pulsations of R CrB in 1990. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV WISCONSIN,SPACE ASTRON LAB,MADISON,WI 53706. RP CLAYTON, GC (reprint author), UNIV COLORADO,CTR ASTROPHYS & SPACE ASTRON,CAMPUS BOX 389,BOULDER,CO 80309, USA. NR 37 TC 15 Z9 15 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 SN 0004-6280 J9 PUBL ASTRON SOC PAC JI Publ. Astron. Soc. Pac. PD MAY PY 1995 VL 107 IS 711 BP 416 EP 426 DI 10.1086/133570 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QY228 UT WOS:A1995QY22800002 ER PT J AU HENSON, PM AF HENSON, PM TI SMITHSONIAN PERSPECTIVES SO SMITHSONIAN LA English DT Letter RP HENSON, PM (reprint author), OFF SMITHSONIAN ARCHIVES,DIV INST HIST,WASHINGTON,DC, 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 MAY PY 1995 VL 26 IS 2 BP 14 EP & PG 0 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA QU908 UT WOS:A1995QU90800018 ER PT J AU SCHILLER, CA MONTALI, RJ DOI, S GROLLMAN, EF AF SCHILLER, CA MONTALI, RJ DOI, S GROLLMAN, EF TI CLINICAL AND MORPHOLOGIC FINDINGS OF FAMILIAL GOITER IN BONGO ANTELOPE (TRAGELAPHUS-EURYCERUS) SO VETERINARY PATHOLOGY LA English DT Article DE BONGO ANTELOPE; DEFECTIVE THYROGLOBULIN SYNTHESIS; FAMILIAL; GOITER; TRAGELAPHUS EURYCERUS ID THYROGLOBULIN SYNTHESIS DEFECT; HEREDITARY CONGENITAL GOITER; AFRIKANDER CATTLE; IODOPROTEIN PATTERN; GOATS; DEFICIENCY AB Inherited defects of thyroglobulin synthesis resulting in congenital goiter are well described in certain breeds of domestic ungulates and in human beings. Goiter associated with synthesis of an abnormal thyroglobulin and the presence of thyroidal albumin was identified in five closely related bongo antelopes (Tragelaphus eurycerus). The goiter had an adult onset, and the affected bongos appeared to remain euthyroid with normal serum T3 and T4 values, normal serum cholesterol concentrations, and nonelevated concentrations of circulating thyroid stimulating hormone (TSH). Goitrous bongos had significant reproductive difficulties, including reduced cyclic activity and prolonged gestations, but were otherwise normal. Over the course of the disease, the thyroid glands greatly enlarged (up to 10 x 20 cm) and became polycystic. Microscopically, there was an admixture of giant colloid-filled follicles and follicles of normal size lined with variable follicular epithelium ranging from squamoid to mildly to moderately hyperplastic. The pathogenesis of goiter in the bongo may reflect a mixture of genetic predisposition coupled with environmental factors, including a period of exposure to a goitrogen. C1 SMITHSONIAN INST,NATL ZOOL PK,DEPT PATHOL,WASHINGTON,DC 20008. NIDDKD,BIOCHEM & METAB LAB,BETHESDA,MD 20892. NR 22 TC 7 Z9 7 U1 1 U2 2 PU AMER COLL VET PATHOLOGIST PI LAWRENCE PA 810 EAST 10TH STREET, LAWRENCE, KS 66044 SN 0300-9858 J9 VET PATHOL JI Vet. Pathol. PD MAY PY 1995 VL 32 IS 3 BP 242 EP 249 PG 8 WC Pathology; Veterinary Sciences SC Pathology; Veterinary Sciences GA QX461 UT WOS:A1995QX46100005 PM 7604491 ER PT J AU ANGLADA, G ESTALELLA, R MAUERSBERGER, R TORRELLES, JM RODRIGUEZ, LF CANTO, J HO, PTP DALESSIO, P AF ANGLADA, G ESTALELLA, R MAUERSBERGER, R TORRELLES, JM RODRIGUEZ, LF CANTO, J HO, PTP DALESSIO, P TI THE MOLECULAR ENVIRONMENT OF THE HH-34 SYSTEM SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, JETS AND OUTFLOWS; ISM, MOLECULES; RADIO LINES, ISM; STARS, INDIVIDUAL (HH 34); STARS, PRE-MAIN-SEQUENCE ID DENSE INTERSTELLAR CLOUDS; HERBIG-HARO OBJECTS; RADIO-CONTINUUM SOURCE; INTER-STELLAR CLOUDS; EXCITING STARS; ORION-KL; RATE COEFFICIENTS; DARK CLOUDS; BOW SHOCKS; MASS STARS AB We present single-dish (angular resolution similar to 40'') and VLA (angular resolution similar to 4'') ammonia observations toward the HH 34 region. Two main condensations are distinguished in both our single-dish and our VLA maps. The northern ammonia condensation is resolved by the VLA as an arclike structure that surrounds the east side of the star HH 34 IRS (the exciting source of the jet) and coincides in projection with Re 24, the reflection nebula associated with the infrared source IRS 5. We suggest that this ammonia structure is tracing the wall of a cavity around HH 34 IRS. Our results are in good agreement with the hypothesis that this cavity was created by the stellar wind from HH 34 IRS, indicating that along the life of the star two kinds of stellar wind might have been present: a low-collimation wind that created the cavity, and a highly collimated wind that is at the origin of the jet. A second VLA ammonia condensation coincides with Re 23, the brightest part of the are of optical nebulosity previously proposed to be tracing the western wall of a cavity that contains the jet. The inner edges of these two ammonia condensations coincide with zones of a high level of polarization of the optical emission. With the angular resolution of our VLA observations, no ammonia (1, 1) emission is detected directly associated with the star HH 34 IRS, setting an upper limit of 0.1[X(NH3)/10(-8)](-1) M. for the mass of a possible circumstellar disk. From our single-dish observations, we find that there is extended emission (similar to 3') of high-density gas, not seen with the VLA. For this gas we estimate a total mass of similar to 15 M. and a kinetic temperature of 15 K. C1 MAX PLANCK INST RADIOASTRON, D-53121 BONN, GERMANY. CSIC, INST ASTROFIS ANDALUCIA, E-18080 GRANADA, SPAIN. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. NATL AUTONOMOUS UNIV MEXICO, INST ASTRON, MEXICO CITY 04510, DF, MEXICO. NATL RADIO ASTRON OBSERV, SOCORRO, NM 87801 USA. RP UNIV BARCELONA, DEPT ASTRON & METEOROL, AV DIAGONAL 647, E-08028 BARCELONA, SPAIN. OI Torrelles, Jose Maria/0000-0002-6896-6085 NR 80 TC 25 Z9 25 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD APR 20 PY 1995 VL 443 IS 2 BP 682 EP 697 DI 10.1086/175560 PN 1 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU584 UT WOS:A1995QU58400020 ER PT J AU CHEN, XM ABRAMOWICZ, MA LASOTA, JP NARAYAN, R YI, I AF CHEN, XM ABRAMOWICZ, MA LASOTA, JP NARAYAN, R YI, I TI UNIFIED DESCRIPTION OF ACCRETION FLOWS AROUND BLACK-HOLES SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; INSTABILITIES ID BINARY-SYSTEMS; DISKS AB We provide a unified description of thermal equilibria of black hole accretion disks, including the newly discovered advection-dominated solutions. We classify the solutions on the basis of optical depth and impotance of advection cooling. We demonstrate that only four physically distinct topological types of equilibria exist. Two of the types correspond to optically thin and optically thick equilibria, while the other two types are distinguished by whether advection is negligible or dominant. A stable Shakura-Sunyaev disk exists only for accretion rates M below a certain maximum. However, there is a critical viscosity parameter alpha(crit), which is a function of radius, such that for alpha > alpha(crit) advection-dominated solutions exist for all M. Even when alpha < alpha(crit), the advection-dominated solutions are available for a wide range of M except for a gap around the Eddington rate. We therefore suggest that advection-dominated flows may be more common than standard thin disks in black hole systems. For certain ranges of radii and M, no stable steady state solution is possible. In these cases, we suggest that limit cycle behavior may occur, leading to variability. C1 CHALMERS UNIV TECHNOL,S-41296 GOTHENBURG,SWEDEN. CNRS,UPR 176,F-92195 MEUDON,FRANCE. OBSERV PARIS,DARC,F-92195 MEUDON,FRANCE. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP CHEN, XM (reprint author), GOTHENBURG UNIV,DEPT ASTRON & ASTROPHYS,S-41296 GOTHENBURG,SWEDEN. NR 19 TC 157 Z9 160 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 APR 20 PY 1995 VL 443 IS 2 BP L61 EP L64 DI 10.1086/187836 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU585 UT WOS:A1995QU58500003 ER PT J AU HARASEWYCH, MG KABAT, AR AF HARASEWYCH, MG KABAT, AR TI HOUBRICK,RICHARD,S. (1937-1993) - BIOGRAPHICAL SKETCH AND MALACOLOGICAL CONTRIBUTIONS SO NAUTILUS LA English DT Item About an Individual RP HARASEWYCH, MG (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU TROPHON CORP PI SILVER SPRING PA 363 CRESCENDO WAY PO BOX 3430, SILVER SPRING, MD 20901 SN 0028-1344 J9 NAUTILUS JI Nautilus PD APR 19 PY 1995 VL 108 IS 3 BP 61 EP 66 PG 6 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA QV071 UT WOS:A1995QV07100003 ER PT J AU GROSHOLZ, ED RUIZ, GM AF GROSHOLZ, ED RUIZ, GM TI DOES SPATIAL HETEROGENEITY AND GENETIC-VARIATION IN POPULATIONS OF THE XANTHID CRAB RHITHROPANOPEUS HARRISII (GOULD) INFLUENCE THE PREVALENCE OF AN INTRODUCED PARASITIC CASTRATOR SO JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY LA English DT Article DE HERITABILITY; LARVAL DISPERSAL; LOXOTHYLACUS PANOPAEI; PARASITIC CASTRATOR; RHITHROPANOPEUS HARRISII; SPATIAL STRUCTURE ID SCHISTOSOMA-MANSONI STRAINS; LOXOTHYLACUS-PANOPAEI; LARVAL DISPERSAL; MYTILUS-EDULIS; CHESAPEAKE BAY; HOST; ADAPTATION; SALINITY; DIFFERENTIATION; SUSCEPTIBILITY AB Potential differences between two populations of the xanthid crab, Rhithropanopeus harrisii (Gould), in susceptibility to infection by an introduced (exotic) parasite, the sacculinid barnacle, Loxothylacus panopaei (Gissler) were investigated. The frequency of L. panopaei infection, which causes castration of the crab host, has risen to 80% during the last 4 yr in one population, while the second population has never been parasitized. Using eggs collected from females of both infected and uninfected populations, broods of larval crabs were reared through metamorphosis, and then placed in field enclosures at the site of the infected population where they were exposed to ambient levels of infective stages of the parasite. We used differences in infection levels among sibling hosts from each population to estimate the heritability (h(2)) of susceptibility to parasite infection. Comparisons of infection levels between populations showed no significant differences, nor were there significant differences in parasitism levels among families within a population. The estimate of heritability for susceptibility to parasitic castration was low (h(2) = 0.10), and not significantly different from zero, suggesting little additive genetic variance. In a second experiment, we examined how levels of parasite infection within a single population were affected by the spatial distribution of the crab population. We placed susceptible juvenile R. harrisii in enclosures either 0.1, 1.0, or 10.0 m from experimental aggregations of infected crabs, which acted as a potential source of infective parasite larvae. The spatial distribution significantly influenced levels of parasitic castration with significantly more infected juvenile crabs in enclosures nearest to experimental aggregations (0.1 m) than in enclosures 1.0 m and 10.0 m away. The lack of differences in susceptibility among populations, as well as families within populations, may be explained by several mechanisms including significant gene flow between populations and insufficient time for a measurable response to selection. The data are also consistent with the idea that equivalent generation times of host and parasite may allow the parasite to evolve infectivity as fast as the host can evolve resistance. The significant influence of the spatial distribution of the host population on the prevalence of the parasite suggests that both the rate of spatial spread and prevalence of this parasite in Chesapeake Bay may be influenced by the distance between aggregations of the host population. C1 SMITHSONIAN ENVIRONM RES CTR,EDGEWATER,MD 21037. OI Ruiz, Gregory/0000-0003-2499-441X NR 48 TC 18 Z9 19 U1 0 U2 13 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0981 J9 J EXP MAR BIOL ECOL JI J. Exp. Mar. Biol. Ecol. PD APR 18 PY 1995 VL 187 IS 1 BP 129 EP 145 DI 10.1016/0022-0981(94)00175-D PG 17 WC Ecology; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA QW745 UT WOS:A1995QW74500009 ER PT J AU RILEY, S AF RILEY, S TI ROCKET CITY - ALPERT,C SO LIBRARY JOURNAL LA English DT Book Review RP RILEY, S (reprint author), SMITHSONIAN INST LIBS,WASHINGTON,DC 20560, 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 111 EP 111 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QT087 UT WOS:A1995QT08700192 ER PT J AU NARAYAN, R YI, IS MAHADEVAN, R AF NARAYAN, R YI, IS MAHADEVAN, R TI EXPLAINING THE SPECTRUM OF SAGITTARIUS-A-ASTERISK WITH A MODEL OF AN ACCRETING BLACK-HOLE SO NATURE LA English DT Article ID GALACTIC-CENTER; X-RAY; BOUNDARY-LAYERS; SGR-A; DISKS; GALAXY; REGION; MASS AB THE radio source at the centre of our Galaxy(1), Sagittarius A* (Sgr A*), seems to be a low-luminosity version of active galactic nuclei-a massive black hole that is accreting gas from the surrounding region(1,2). This idea is supported by observations of the gas and stars within 1 pc of Sgr A*, which appear to move under the influence of a large central mass(1,3,4). A recent determination of the upper limit(5,6) to the hard X-ray emission from the Galactic Centre has posed a problem for this picture, however, as the mass accretion rate implied by applying a standard accretion model to the X-ray data is far below that estimated from the observations of gas flows. Here we present a new model of accretion onto Sgr A*, in which most of the energy released is carried along with the gas and lost into the black hole of mass similar to 7 x 10(5) solar masses, rather than appearing as radiation. The model fits the observed spectrum of Sgr A* from radio to hard X-ray wavelengths, and reconciles the low observed luminosity with a high mass-accretion rate. RP NARAYAN, R (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 39 TC 349 Z9 353 U1 0 U2 1 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD APR 13 PY 1995 VL 374 IS 6523 BP 623 EP 625 DI 10.1038/374623a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QT189 UT WOS:A1995QT18900052 ER PT J AU HOLICK, MF TIAN, XQ ALLEN, M AF HOLICK, MF TIAN, XQ ALLEN, M TI EVOLUTIONARY IMPORTANCE FOR THE MEMBRANE ENHANCEMENT OF THE PRODUCTION OF VITAMIN-D3 IN THE SKIN OF POIKILOTHERMIC ANIMALS SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID PREVITAMIN-D3; PHOTOSYNTHESIS AB The photoproduction of vitamin D in the skin was essential for the evolutionary development of terrestrial vertebrates. During exposure to sunlight, previtamin D-3 formed in the skin is isomerized to vitamin D-3 (calciol) by a temperature-dependent process. Since early land vertebrates were poikilothermic, the relatively slow conversion of previtamin D-3 to vitamin D-3 at ambient temperature put them at serious risk for developing vitamin D deficiency, thus leading to a poorly mineralized skeleton that could have ultimately halted further evolutionary development of vertebrates on land. We evaluated the rate of isomerization of previtamin D-3 to vitamin D-3 in the skin of iguanas and found the isomerization rate was enhanced by 1100% and 1700% at 25 degrees C and 5 degrees C, respectively. It is likely that the membrane entrapment of previtamin D-3 in its s-cis,s-cis; conformation is responsible for the markedly enhanced conversion of previtamin D-3 to vitamin D-3. The membrane-enhanced production of vitamin D-3 ensures the critical supply of vitamin D-3 to poikilothermic animals such as iguanas. C1 BOSTON UNIV,MED CTR,DEPT PHYSIOL,BOSTON,MA 02118. SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008. RP HOLICK, MF (reprint author), BOSTON UNIV,MED CTR,DEPT MED,VITAMIN D SKIN & RES LAB,ENDOCRINE SECT,BOSTON,MA 02118, USA. FU NIAMS NIH HHS [R01-AR36963] NR 8 TC 87 Z9 90 U1 1 U2 13 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD APR 11 PY 1995 VL 92 IS 8 BP 3124 EP 3126 DI 10.1073/pnas.92.8.3124 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QR968 UT WOS:A1995QR96800011 PM 7724526 ER PT J AU MCNAMARA, BR AF MCNAMARA, BR TI BLUE LOBES IN THE HYDRA-A CLUSTER CENTRAL GALAXY SO ASTROPHYSICAL JOURNAL LA English DT Article DE COOLING FLOWS; GALAXIES, CLUSTERS, INDIVIDUAL (HYDRA A); GALAXIES, ELLIPTIC AND LENTICULAR, CD; GALAXIES, JETS; GALAXIES, PHOTOMETRY; GALAXIES, STRUCTURE ID CENTRAL DOMINANT GALAXIES; POWERFUL RADIO GALAXIES; STAR FORMATION; COOLING FLOWS; SURFACE PHOTOMETRY; ELLIPTICAL GALAXIES; LACERTAE OBJECTS; STELLAR CONTENT; EMITTING GAS; A CLUSTER AB We present new U- and I-band images of the centrally dominant galaxy in the Hydra A cluster, obtained with the 2.5 m Isaac Newton Telescope at La Palma. The galaxy is centered in a poor, X-ray-luminous cluster whose gaseous intracluster medium is apparently cooling at a rate of m(CF) similar to 300 M. yr(-1). The galaxy's structure is that of a normal giant elliptical galaxy, apart from the central similar to 8 x 6 arcsec (similar to 12 x 9 kpc) region which contains an unusually blue, lobelike structure that is spatially coincident with a luminous emission-line nebula in rotation about the nucleus. Based on the near spatial coincidence of the central continuum structure and the emission-line nebula, we suggest that the blue continuum is due to a warm stellar population in a central disk. In order to isolate and study the structure of the disk, we have subtracted a smooth galactic background model from the U-band image. The disk's surface brightness profiles along its major and minor axes decline roughly exponentially with radius. The disk's axial ratio is consistent with a nearly edge-on thick disk or a thin disk that is inclined with respect to the line of sight. The bluest regions, located a few arcsec on either side of the nucleus (giving the lobelike appearance), may be due to locally enhanced star formation or a seeing-blurred ring of young stars embedded in the disk observed nearly edge-on. If star formation is occurring with the local initial mass function, the central color, surface brightness, and dynamical mass would be consistent with models for star formation at a rate of less than or similar to 1 M. yr(-1) which has persisted for the past similar to 10(9) yr, a short burst (10(7) yr) of star formation at a rate of similar to 30 M, yr(-1) which occurred less than or similar to 10(8) yr ago, or an instantaneous burst of star formation which occurred similar to 5 x 10(7) yr ago. While the young population contributes similar to 30%-40% of the central U-band luminosity, its mass would be less than or similar to 1% to less than or similar to 10% (10(8) M.-2 x 10(9) M.) of the galaxy's central dynamical mass. We consider a number of possible origins for the disk material. The misaligned disk and stellar isophotal axes and the apparent rarity of such large disks in elliptical galaxies does not support fueling by mass loss from stars in the galaxy. Fueling by the cluster cooling flow or infalling material from an interloping galaxy are more likely origins. The jets of the powerful double-lobed radio source 3C 218 emerge from the nucleus parallel to the rotation axis of the emission-line nebula and nearly along the minor axis of the continuum structure. This configuration resembles, in a number of aspects, standard models for double-lobed radio sources powered by accretion of disk material onto a compact object (e.g., a black hole). Hydra A's large radio luminosity compared to other FR I and cooling-how radio sources may be the result of the abundant fuel supply provided by the circumnuclear disk. Although the cause of the radio-aligned lobelike structures in two other cooling flow cluster galaxies (Abell 1975 and Abell 2597) remains undetermined, the disk-like nature of the blue optical structure in Hydra A appears to be quite different from the optical lobes in those objects. RP MCNAMARA, BR (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, MS-6, CAMBRIDGE, MA 02138 USA. NR 56 TC 27 Z9 27 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1995 VL 443 IS 1 BP 77 EP 88 DI 10.1086/175504 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900009 ER PT J AU HOFLICH, P AF HOFLICH, P TI ANALYSIS OF THE TYPE IA SUPERNOVA SN 1994D SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 4526); HYDRODYNAMICS; RADIATIVE TRANSFER; STARS, INTERIORS; SUPERNOVAE, INDIVIDUAL (SN 1994D) ID SPHERICALLY SYMMETRIC FLOWS; COMOVING-FRAME EQUATION; LIGHT CURVES; MODELS; ATMOSPHERES; SPECTRA AB We present an analysis of the observed light curves and spectra of the Type Ia supernova SN 1994D in the galaxy NGC 4526. The sensitivity of theoretical light curves and spectra to the underlying hydrodynamical model is discussed. The calculations are consistent with respect to the explosion mechanism, the optical and infrared light curves, and the spectral evolution, leaving the description of the nuclear-burning front and the structure of the white dwarf as the only free parameters. The explosions are calculated using a one-dimensional Lagrangian code including a nuclear network (Khokhlov 1991). Subsequently, the light curves are constructed. Spectra are computed for several instants of time using the density, chemical, and luminosity structure resulting from the light-curve code. Our non-LTE (NLTE) code solves the relativistic radiation transport equations in a comoving frame consistently with the statistical equations and ionization due to gamma-radiation for the most important elements (He, C, O, Ne, Na, Mg, Si, S, Ca, Fe). About 300,000 additional lines are included, assuming LTE-level populations and an equivalent-two-level approach for the source functions. We find that the classical two-level approach underestimates thermalization processes by several orders of magnitude. Besides models already discussed in previous papers, a new series of delayed detonations has been included with a Ni-56 production ranging from similar or equal to 0.2 up to 0.7 M. depending on the density at which the transition from a deflagration to a detonation occurs. The visual magnitude at maximum light M(V) ranges from approximate to -18.4 to approximate to -19.5 mag. Only one model with M(V) = -19.39 mag shows good agreement with the observations of SN 1994D both for B, V, R, and I colors and the spectral evolution. The deflagration velocity is dose to the laminar deflagration (upsilon = 0.03c(s)), and the transition from the deflagration to the detonation occurs at rho(tr) = 2 x 10(7) g cm(-3). The initial central density of the white dwarf is 2.7 x 10(9) g cm(-3) i.e., about 20% lower than in our delayed detonation models previously considered. The lower density may de understood in terms of a higher accretion rate on the progenitor. During the explosion, 0.6 M. of Ni-56 produced. The need to reduce Ti in the outer layers becomes evident from the spectral fits. This may be explained by small-scale density fluctuations during the explosion or by different primordial metallicity in the exploding white dwarf. The distance to SN 1994D is determined to 16.2 +/- 2 Mpc. The explosion took place between 1994 March 3 and 4. RP HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 88 TC 114 Z9 114 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1995 VL 443 IS 1 BP 89 EP 108 DI 10.1086/175505 PN 1 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900010 ER PT J AU REID, MJ ARGON, AL MASSON, CR MENTEN, KM MORAN, JM AF REID, MJ ARGON, AL MASSON, CR MENTEN, KM MORAN, JM TI SYNCHROTRON EMISSION FROM THE H2O MASER SOURCE IN W3(OH) SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (W3); ISM, JETS AND OUTFLOWS; MASERS; RADIATION MECHANISMS, NONTHERMAL; RADIO CONTINUUM, ISM ID PROPER MOTIONS; OH LINES; SHOCKS; GHZ; DISCOVERY; DISTANCE; OUTFLOW AB We present a study of the radio continuum source found near the position of the H2O masers and the Turner-Welch source in the W3(OH) region. The source spectrum from 1.6 to 15 GHz exhibits a power law with spectral index -0.6. The continuum source is elongated in the east-west direction and its size decreases linearly with increasing frequency. These observations provide strong evidence for synchrotron emission from an inhomogeneous source. The elongated continuum source is coincident within 0.''1 of the center of expansion of the H2O masers and is aligned with the dominant H2O outflow pattern. A possible model for the system includes an early-type star with a fast collimated wind that drives a jetlike outflow. Fast shocks in the wind or jet accelerate electrons, via a first-order Fermi process, to relativistic speeds necessary for synchrotron emission. The jet impinges on the surrounding molecular material and shocks and accelerates this material, leading to the motions observed in the H2O masers. RP HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 24 TC 79 Z9 79 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1995 VL 443 IS 1 BP 238 EP 244 DI 10.1086/175518 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900023 ER PT J AU JOHNSON, HR ENSMAN, LM ALEXANDER, DR AVRETT, EH BROWN, A CARPENTER, KG ERIKSSON, K GUSTAFSSON, B JORGENSEN, UG JUDGE, PD LINSKY, JL LUTTERMOSER, DG QUERCI, F QUERCI, M ROBINSON, RD WING, RF AF JOHNSON, HR ENSMAN, LM ALEXANDER, DR AVRETT, EH BROWN, A CARPENTER, KG ERIKSSON, K GUSTAFSSON, B JORGENSEN, UG JUDGE, PD LINSKY, JL LUTTERMOSER, DG QUERCI, F QUERCI, M ROBINSON, RD WING, RF TI OUTER LAYERS OF A CARBON STAR - THE VIEW FROM THE HUBBLE-SPACE-TELESCOPE SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, CARBON; STARS, CHROMOSPHERES; STARS, MASS LOSS; ULTRAVIOLET, STARS ID MASS-LOSS RATES; GIANT STARS; CIRCUMSTELLAR ENVELOPES; EVOLVED STARS; TX-PISCIUM; COOL; CHROMOSPHERES; EVOLUTION; SPECTRA; VELOCITIES AB To advance our understanding of the relationship between stellar chromospheres and mass loss, which is a common property of carbon stars and other asymptotic giant branch stars, we have obtained ultraviolet spectra of the nearby N-type carbon star UU Aur using the Hubble Space Telescope (HST). In this paper we describe the HST observations, identify spectral features in both absorption and emission, and attempt to infer the velocity field in the chromosphere, upper photosphere, and circumstellar envelope from spectral line shifts. A mechanism for producing fluoresced emission to explain a previously unobserved emission line is proposed. Some related ground-based observations are also described. C1 WICHITA STATE UNIV,DEPT PHYS,WICHITA,KS 67208. SMITHSONIAN ASTROPHYS OBSERV,CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV COLORADO,JILA,BOULDER,CO 80309. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. ASTRON OBSERV,S-75120 UPPSALA,SWEDEN. NIELS BOHR INST,DK-2100 COPENHAGEN,DENMARK. NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. APPL RES CORP,LANDOVER,MD 20785. OHIO STATE UNIV,DEPT ASTRON,COLUMBUS,OH 43210. UNIV COLORADO,NATL INST STAND & TECHNOL,DIV QUANTUM PHYS,BOULDER,CO 80309. RP JOHNSON, HR (reprint author), INDIANA UNIV,DEPT ASTRON,SWAIN W 319,BLOOMINGTON,IN 47405, USA. RI Carpenter, Kenneth/D-4740-2012 NR 48 TC 11 Z9 11 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 APR 10 PY 1995 VL 443 IS 1 BP 281 EP 294 DI 10.1086/175525 PN 1 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ879 UT WOS:A1995QQ87900030 ER PT J AU FRUCHTER, AS BOOKBINDER, J BAILYN, CD AF FRUCHTER, AS BOOKBINDER, J BAILYN, CD TI HST IMAGES OF THE ECLIPSING PULSAR B1957+20 SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, ECLIPSING; PULSARS, INDIVIDUAL (PSR B1957 + 20); STARS, LOW-MASS, BROWN DWARFS ID MILLISECOND PULSAR; OPTICAL COUNTERPART; PSR1957+20; BINARY; PSR-1957+20; COMPANION; NEBULA; SYSTEM AB We have obtained images of the eclipsing pulsar binary PSR B1957+20 using the Planetary Camera of the Hubble Space Telescope. The high spatial resolution of this instrument has allowed us to separate the pulsar system from a nearby background star which has confounded ground-based observations of this system near optical minimum. Our images limit the temperature of the backside of the companion to T less than or similar to 2800 K, about a factor of 2 less than the average temperature of the side of the companion facing the pulsar, and provide a marginal detection of the companion at optical minimum. The magnitude of this detection is consistent with previous work which suggests that the companion nearly fills its Roche lobe and is supported through tidal dissipation. C1 SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. YALE UNIV,DEPT ASTRON,NEW HAVEN,CT 06511. RP FRUCHTER, AS (reprint author), UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720, USA. NR 24 TC 10 Z9 10 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 APR 10 PY 1995 VL 443 IS 1 BP L21 EP L24 DI 10.1086/187826 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ885 UT WOS:A1995QQ88500006 ER PT J AU KORZENNIK, SG NOYES, RW BROWN, T NISENSON, P HORNER, S AF KORZENNIK, SG NOYES, RW BROWN, T NISENSON, P HORNER, S TI NIGHTLY VARIATIONS OF NONRADIAL OSCILLATIONS IN THE DELTA-SCUTI STAR UPSILON-URSAE-MAJORIS SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, INDIVIDUAL (UPSILON URSAE MAJORIS); STARS, OSCILLATIONS; STARS, VARIABLES (DELTA SCUTI) AB We obtained spectra of the rapidly rotating Delta Scuti star upsilon UMa with the Advanced Fiber Optic Echelle Spectrometer on five successive nights in 1993 April, at a cadence of one spectrum every 5 minutes over time periods averaging 4 hours on each night. Cross-correlations of the spectra with a template spectrum from a slowly rotating star of similar spectral type yielded the pattern of features propagating across the lines, averaged over all spectral lines recorded. The spacing of the features in wavelength and their speed of motion across the line profile depend on the azimuthal order m and frequency nu of propagating oscillation modes. Using a Doppler imaging analysis, we computed nightly \m\-nu diagrams; these show several resolved modes with effective azimuthal order m ranging from about 2 up to about 11, and frequencies between 130 and 170 mu Hz (i.e., periods between 2.1 and 1.6 hours). We identify the observed modes as propagating prograde modes; the corresponding retrograde modes are not observed. Viewed in a frame corotating with the star with rotation speed of 116 km s(-1) as derived from these data, modes with m similar to 7 and with m similar to 11 have approximately the same frequency (70 mu Hz). However, their relative amplitude changes substantially from night to night, suggesting that (1) the coherence time of the modes is not longer than about 1 day, or (2) a possible coupling between modes of similar intrinsic frequencies causes an alternating pattern of modal amplitude, or (3) beats are being observed between unresolved modes of similar wavelength and frequency. C1 NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. PENN STATE UNIV,DAVEY LAB 525,UNIVERSITY PK,PA 16802. RP KORZENNIK, SG (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 9 TC 5 Z9 5 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 APR 10 PY 1995 VL 443 IS 1 BP L25 EP L28 DI 10.1086/187827 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ885 UT WOS:A1995QQ88500007 ER PT J AU KUIJKEN, K MERRIFIELD, MR AF KUIJKEN, K MERRIFIELD, MR TI ESTABLISHING THE CONNECTION BETWEEN PEANUT-SHAPED BULGES AND GALACTIC BARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 5746, NGC 5965); GALAXIES, KINEMATICS AND DYNAMICS; GALAXIES, SPIRAL; GALAXIES, STRUCTURE ID DISK GALAXIES; STELLAR BARS; BOX; GAS AB It has been suggested that the peanut-shaped bulges seen in some edge-on disk galaxies are due to the presence of a central bar. Although bars cannot be detected photometrically in edge-on galaxies, we show that barred potentials produce a strong kinematic signature in the form of double-peaked line-of-sight velocity distributions with a characteristic ''figure-of-eight'' variation with radius. We have obtained spectroscopic observations of two edge-on galaxies with peanut-shaped bulges (NGC 5746 and NGC 5965), and they reveal exactly such line-of-sight velocity distributions in both their gaseous (emission line) and their stellar (absorption line) components. These observations provide strong observational evidence that peanut-shaped bulges are a by-product of bar formation. C1 HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. UNIV SOUTHAMPTON, DEPT PHYS, HIGHFIELD SO9 5NH, ENGLAND. NR 24 TC 138 Z9 138 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 10 PY 1995 VL 443 IS 1 BP L13 EP L16 DI 10.1086/187824 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ885 UT WOS:A1995QQ88500004 ER PT J AU TAFALLA, M BACHILLER, R AF TAFALLA, M BACHILLER, R TI AMMONIA EMISSION FROM BOW SHOCKS IN THE L1157 OUTFLOW SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (L1157); ISM, JETS AND OUTFLOWS; SHOCK WAVES; STARS, FORMATION ID HERBIG-HARO OBJECTS; MOLECULAR OUTFLOWS; DARK CLOUD AB We present high-resolution (approximate to 5 '') NH3(1, 1) and NH3(3, 3) observations toward the blue lobe of the remarkable bipolar outflow L1157. We find that the ammonia emission arises from several compact condensations that are well aligned with IRAS 20386+6751, the origin of the outflow. The gas that emits in ammonia has been strongly affected by the outflow. In addition of having been accelerated, the gas has been heated to temperatures of more than 60-80 K (a factor of 5 with respect to its quiescent value), and its ammonia abundance has been enhanced by more than an order of magnitude. We interpret the ammonia emission as arising from a series of bow shocks along the outflow axis, and although we cannot detect the shocking agent, our observations suggest that it is in the form of a highly collimated jet. The multiplicity of the ammonia peaks along the outflow suggests the jet is episodic, and the emitting source is so reddened, that most likely represents a case of a Class 0 object. C1 CTR ASTRON YEBES,IGN,E-19080 GUADALAJARA,SPAIN. RP TAFALLA, M (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,MS 42,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 18 TC 79 Z9 79 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 APR 10 PY 1995 VL 443 IS 1 BP L37 EP L40 DI 10.1086/187830 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ885 UT WOS:A1995QQ88500010 ER PT J AU STOTT, A EVERSHED, RP AF STOTT, A EVERSHED, RP TI DETERMINATION OF DELTA-C-13 VALUES FROM LIPID BIOMARKERS PRESERVED IN ARCHAEOLOGICAL BONES USING ISOTOPE RATIO MONITORING-GAS CHROMATOGRAPHY - MASS-SPECTROMETRY SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 UNIV BRISTOL,SCH CHEM,BRISTOL BS8 1TS,AVON,ENGLAND. SMITHSONIAN INST,MUSEUM SUPPORT CTR,CONSERVAT ANALYT LAB,WASHINGTON,DC 20560. RI STOTT, ANDREW /I-7920-2012 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 17 EP HIST PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23202418 ER PT J AU OUDEMANS, TFM AF OUDEMANS, TFM TI ORGANIC RESIDUE ANALYSIS IN THE STUDY OF ANCIENT VESSEL USE SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Note C1 SMITHSONIAN INST,MUSEUM SUPPORT CTR,CONSERVAT ANALYT LAB,WASHINGTON,DC 20560. 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 44 EP HIST PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23202445 ER PT J AU VANDIVER, PB MERKEL, J AF VANDIVER, PB MERKEL, J TI INTERACTION AMONG THE CRAFTS OF COPPER SMELTING, GLASS AND FAIENCE PRODUCTION IN THE 3RD MILLENNIUM BCE OF THE ANCIENT NEAR-EAST SO ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY LA English DT Meeting Abstract C1 SMITHSONIAN INST,WASHINGTON,DC 20560. UNIV LONDON,INST ARCHAEOL,LONDON,ENGLAND. WILLIAMS COLL,DEPT CHEM,WILLIAMSTOWN,MA 01267. 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 48 EP HIST PN 1 PG 0 WC Chemistry, Multidisciplinary SC Chemistry GA QP232 UT WOS:A1995QP23202449 ER PT J AU SEARLES, PS CALDWELL, MM WINTER, K AF SEARLES, PS CALDWELL, MM WINTER, K TI THE RESPONSE OF 5 TROPICAL DICOTYLEDON SPECIES TO SOLAR ULTRAVIOLET-B RADIATION SO AMERICAN JOURNAL OF BOTANY LA English DT Article ID ALPINE LIFE ZONE; LOBLOLLY-PINE; CHLOROPHYLL FLUORESCENCE; ELEVATIONAL GRADIENT; PLANT COMPETITION; FIELD CONDITIONS; GROWN SEEDLINGS; PHOTOSYNTHESIS; SENSITIVITY; IRRADIATION AB Tropical regions currently receive the highest levels of global solar ultraviolet-B radiation (UV-B, 280-320 nm) even without ozone depletion. The influence of natural, present-day W-B irradiance in the tropics was examined for five tropical species including three native rain forest tree species (Cecropia obtusifolia, Tetragastris panamensis, Calophyllum longifolium) and two economically important species (Swietenia macrophylla, Manihot esculenta). Solar W-B radiation conditions in a small clearing on Barro Colorado Island, Panama (9 degrees N), were obtained using either a W-B-excluding plastic film or a film that transmits most of the solar UV-B. Significant differences between UV-B-excluded and near-ambient UV-B plants were often exhibited as increased foliar UV-B absorbing compounds and, in several cases, as reduced plant height with exposure to solar UV-B. Increases in leaf mass per area and reductions in leaf blade length under solar UV-B occurred less frequently. Biomass and photosystem II function using chlorophyll a fluorescence were generally unaffected. The results of this study provide evidence that tropical vegetation, including native rain forest species, responds to the present level of natural solar UV-B radiation. This suggests that even minor ozone depletion in the tropics may have biological implications. C1 UTAH STATE UNIV,CTR ECOL,LOGAN,UT 84322. SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RP SEARLES, PS (reprint author), UTAH STATE UNIV,DEPT RANGELAND RESOURCES,LOGAN,UT 84322, USA. NR 49 TC 89 Z9 102 U1 0 U2 7 PU BOTANICAL SOC AMER INC PI COLUMBUS PA OHIO STATE UNIV-DEPT BOTANY 1735 NEIL AVE, COLUMBUS, OH 43210 SN 0002-9122 J9 AM J BOT JI Am. J. Bot. PD APR PY 1995 VL 82 IS 4 BP 445 EP 453 DI 10.2307/2445690 PG 9 WC Plant Sciences SC Plant Sciences GA QT943 UT WOS:A1995QT94300003 ER PT J AU DILLENBURG, LR TERAMURA, AH FORSETH, IN WHIGHAM, DF AF DILLENBURG, LR TERAMURA, AH FORSETH, IN WHIGHAM, DF TI PHOTOSYNTHETIC AND BIOMASS ALLOCATION RESPONSES OF LIQUIDAMBAR STYRACIFLUA (HAMAMELIDACEAE) TO VINE COMPETITION SO AMERICAN JOURNAL OF BOTANY LA English DT Article ID ULMUS-AMERICANA SEEDLINGS; NORTHERN RED-OAK; VARYING NITROGEN; WATER RELATIONS; LOBLOLLY-PINE; GAS-EXCHANGE; PLANT-ROOT; GROWTH; LIGHT; DROUGHT AB This 2-year held study examined stomatal conductance, photosynthesis, and biomass allocation of Liquidambar styraciflua saplings in response to below- and aboveground competition with the vines Lonicera japonica and Parthenocissus quinquefolia. Vine competition did not affect stomatal conductance of the host trees. The leaf photosynthetic capacity and photosynthetic nitrogen-use efficiency were significantly reduced by root competition with vines, either singly or in combination with aboveground competition, early in the second growing season. However, such differences disappeared by the end of the second growing season. Trees competing below ground with vines also had lower allocation to leaves compared with stems. Aboveground competition with vines resulted in reduced photosynthetic capacity per unit leaf area, but not per unit leaf weight, in trees. No correlation was found between single leaf photosynthetic capacity and tree growth. In contrast, a high positive correlation existed between allocation to leaves and diameter growth. Results from this study suggest that allocation patterns are more affected than leaf photosynthesis in trees competing with vines. C1 SMITHSONIAN ENVIRONM RES CTR,EDGEWATER,MD 21037. UNIV MARYLAND,DEPT BOT,COLLEGE PK,MD 20742. RI Rebello Dillenburg, Lucia /D-9120-2013; OI Whigham, Dennis/0000-0003-1488-820X NR 42 TC 48 Z9 52 U1 4 U2 17 PU BOTANICAL SOC AMER INC PI COLUMBUS PA OHIO STATE UNIV-DEPT BOTANY 1735 NEIL AVE, COLUMBUS, OH 43210 SN 0002-9122 J9 AM J BOT JI Am. J. Bot. PD APR PY 1995 VL 82 IS 4 BP 454 EP 461 DI 10.2307/2445691 PG 8 WC Plant Sciences SC Plant Sciences GA QT943 UT WOS:A1995QT94300004 ER PT J AU WILCZYNSKI, W RAND, AS RYAN, MJ AF WILCZYNSKI, W RAND, AS RYAN, MJ TI THE PROCESSING OF SPECTRAL CUES BY THE CALL ANALYSIS SYSTEM OF THE TUNGARA FROG, PHYSALAEMUS-PUSTULOSUS SO ANIMAL BEHAVIOUR LA English DT Article ID FEMALE MATE CHOICE; SEXUAL SELECTION; NEOTROPICAL FROG; SENSORY EXPLOITATION; SPECIES RECOGNITION; MATING PREFERENCES; COMMUNICATION; SPECIATION; REPERTOIRE; EVOLUTION AB How the Neotropical frog Physalaemus pustulosus uses spectral cues to recognize and assess the relative attractiveness of conspecific calls was examined using 50 different phonotaxis experiments with a total of 1005 individual female-choice tests. The advertisement call is an FM sweep from 900 to 430 Hz, or 'whine', which can be followed by a 'chuck' (with most energy near 2500 Hz) to enhance the whine's attractiveness. Female-choice tests pairing full whines against modified whines or chucks indicate that stimulation in a high-frequency region of the whine's fundamental between 900 and 560 Hz, followed by stimulation in a partially overlapping low-frequency region between 640 and 500 Hz is necessary and sufficient for call recognition. No single frequency or frequency band within each region is crucial for recognition, and the recognition system is tolerant of silent gaps and shortening of the signal. Adding energy at any frequency in the normal whine's fundamental or in the chuck enhances the attractiveness of the call. The higher frequencies of the chuck, which contain 90% of its energy, are normally responsible for its enhancement of the call. These results suggest that much of the natural call in this species is unnecessary for call recognition, and that the recognition system is very tolerant of call variation. They also suggest that the system assessing the relative attractiveness of calls is extremely permissive, and that virtually anything that increases the amount of energy in the call at frequencies stimulating any part of the peripheral auditory system may make the call more attractive. C1 UNIV TEXAS,DEPT ZOOL,AUSTIN,TX 78712. SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RP WILCZYNSKI, W (reprint author), UNIV TEXAS,DEPT PSYCHOL,AUSTIN,TX 78712, USA. NR 39 TC 64 Z9 67 U1 0 U2 3 PU ACADEMIC PRESS (LONDON) LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0003-3472 J9 ANIM BEHAV JI Anim. Behav. PD APR PY 1995 VL 49 IS 4 BP 911 EP 929 DI 10.1006/anbe.1995.0123 PG 19 WC Behavioral Sciences; Zoology SC Behavioral Sciences; Zoology GA QT441 UT WOS:A1995QT44100006 ER PT J AU RAMELLA, M GELLER, MJ HUCHRA, JP THORSTENSEN, JR AF RAMELLA, M GELLER, MJ HUCHRA, JP THORSTENSEN, JR TI THE REDSHIFT-SPACE NEIGHBORHOODS OF 36 LOOSE GROUPS OF GALAXIES .1. THE DATA SO ASTRONOMICAL JOURNAL LA English DT Article ID CFA SURVEY SLICE; FAINTER GALAXIES; NEARBY GROUPS; CLUSTERS; FLUCTUATIONS; KINEMATICS; CATALOG C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH 03755. RP RAMELLA, M (reprint author), OSSERV ASTRON TRIESTE,VIA TIEPOLO 11,I-34131 TRIESTE,ITALY. OI Ramella, Massimo/0000-0001-5446-4749 NR 27 TC 26 Z9 26 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD APR PY 1995 VL 109 IS 4 BP 1458 EP 1468 DI 10.1086/117375 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP655 UT WOS:A1995QP65500003 ER PT J AU RAMELLA, M GELLER, MJ HUCHRA, JP THORSTENSEN, JR AF RAMELLA, M GELLER, MJ HUCHRA, JP THORSTENSEN, JR TI THE REDSHIFT-SPACE NEIGHBORHOODS OF 36 LOOSE GROUPS OF GALAXIES .2. ANALYSIS SO ASTRONOMICAL JOURNAL LA English DT Article ID FLUCTUATIONS; CLUSTERS C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. DARTMOUTH COLL,DEPT PHYS & ASTRON,HANOVER,NH 03755. RP RAMELLA, M (reprint author), OSSERV ASTRON TRIESTE,VIA TIEPOLO 11,I-34131 TRIESTE,ITALY. OI Ramella, Massimo/0000-0001-5446-4749 NR 17 TC 22 Z9 22 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD APR PY 1995 VL 109 IS 4 BP 1469 EP 1475 DI 10.1086/117376 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP655 UT WOS:A1995QP65500004 ER PT J AU LADA, EA LADA, CJ AF LADA, EA LADA, CJ TI NEAR-INFRARED IMAGES OF IC-348 AND THE LUMINOSITY FUNCTIONS OF YOUNG EMBEDDED STAR-CLUSTERS SO ASTRONOMICAL JOURNAL LA English DT Article ID MAIN-SEQUENCE; SOLAR NEIGHBORHOOD; MOLECULAR CLOUD; DENSE CORES; BROWN DWARF; LOW-MASS; STELLAR; EVOLUTION; MULTIPLICITY; EXTINCTION C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP LADA, EA (reprint author), UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742, USA. NR 56 TC 194 Z9 194 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD APR PY 1995 VL 109 IS 4 BP 1682 EP 1696 DI 10.1086/117396 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP655 UT WOS:A1995QP65500024 ER PT J AU HARTMANN, L CALVET, N AF HARTMANN, L CALVET, N TI OBSERVATIONAL CONSTRAINTS ON FU ORI WINDS SO ASTRONOMICAL JOURNAL LA English DT Article ID Z-CANIS-MAJORIS; CENTRIFUGALLY DRIVEN WINDS; T-TAURI STARS; ACCRETION DISKS; ORIONIS STARS; PROTOSTELLAR DISKS; MASS-LOSS; OBJECTS; EMISSION; FLOWS C1 CTR INVEST ASTRON,MERIDA 5101,VENEZUELA. INST ESTUDIS CATALANS,ASTROFIS SOC CATALANA FIS GRP,BARCELONA,SPAIN. RP HARTMANN, L (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 34 TC 46 Z9 46 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD APR PY 1995 VL 109 IS 4 BP 1846 EP 1855 DI 10.1086/117411 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP655 UT WOS:A1995QP65500039 ER PT J AU BARRET, D MOTCH, C PIETSCH, W VOGES, W AF BARRET, D MOTCH, C PIETSCH, W VOGES, W TI ROSAT/PSPC ALL-SKY SURVEY OBSERVATIONS OF THE ULTRA-SOFT X-RAY TRANSIENT TRA X-1 (A1524-62) - DETECTION DURING A MINI-OUTBURST AND UPPER LIMIT IN QUIESCENCE SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE TRA X-1 (A1524-62); X-RAYS; STARS; ACCRETION ID MODEL AB We report on the ROSAT/PSPC All Sky Survey observations of the ultra soft X-ray transient TrA X-1. By chance, the source belongs to a sky region which was surveyed twice by ROSAT. Furthermore, the first scan occurred only a few days before a SIGMA observation which had revealed that the source was bright at hard X-ray energies, and was therefore probably undergoing an outburst phase. As expected, the source was clearly detected by ROSAT. The PSPC spectrum is equally well fitted by a power law of photon index in the range of 1 to 5, or a cool blackbody of temperature 0.3 - 0.7 keV. Depending on the assumed spectral model the (0.1 - 2.4 keV) unabsorbed X-ray luminosity of TrA X-1 varies from approximate to 4.5 x 10(36) ergs(-1) down to approximate to 8.0 x 10(35) ergs(-1) (d = 4.4 kpc). Using these data, we are unable to prove nor rule out the presence of an ultra soft component in the spectrum of TrA X-1 during this outburst. The second scan took place about six months later. No Xray emission was detected, indicating that TrA X-1 had rapidly returned into quiescence. An upper limit of approximate to 2 - 10 x 10(33) ergs(-1) has been derived for its quiescent X-ray luminosity. The relatively low soft X-ray luminosity measured by ROSAT, together with the non-detection by X-ray all sky monitors (GINGA and WATCH) strengthens the idea that in 1990 TrA X-1 underwent a non classical outburst phase, characterized by a low maximum intensity. Such ''mini-outbursts'' are expected in the disk thermal instability model. C1 HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. CNRS, UA 1280, OBSERV ASTRON STRASBOURG, F-67000 STRASBOURG, FRANCE. RP BARRET, D (reprint author), CTR ETUD SPATIALE RAYONNEMENTS, CNRS, UPS, 9 AV COLONEL ROCHE, BP 4346, F-31029 TOULOUSE, FRANCE. NR 19 TC 14 Z9 14 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD APR PY 1995 VL 296 IS 2 BP 459 EP 462 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QT460 UT WOS:A1995QT46000023 ER PT J AU DUBINSKI, J KUIJKEN, K AF DUBINSKI, J KUIJKEN, K TI THE SETTLING OF WARPED DISKS IN OBLATE DARK HALOS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, FORMATION; GALAXIES, KINEMATICS AND DYNAMICS; GALAXIES, SPIRAL; GALAXIES, STRUCTURE; METHODS, NUMERICAL ID GALAXY FORMATION; ANGULAR-MOMENTUM; SPIRAL GALAXIES; HEAVY HALOS; MATTER; UNIVERSE; COLLAPSE; SHAPE; CORE AB When a galaxy forms, the disk may initially be tilted with respect to a flattened dark halo. The misalignment between the disk and the halo is a common explanation for galactic disk warps, since in this state disks have precessing bending modes which resemble real warps. The gravitational response of the halo has often been ignored, and its strength and effect on possible bending modes is unknown. We therefore calculate the response of an oblate halo to a precessing inclined exponential disk using a variety of techniques. We construct models with a rigid exponential disk precessing in a particle halo, a particle disk precessing inside a static bulge/halo potential, and a self-consistent model with a particle disk, bulge, and halo. When the disk:halo mass ratio is small(similar to 10%) within 5 exponential scale radii, the disk settles to the equatorial plane of the halo within five orbital times. When the disk and halo mass are comparable, the halo rapidly aligns with the disk within a few orbital times, while the disk inclination drops. The rapid response of the halo to an inclined precessing disk suggests that the warps seen in galactic disks are not due to a misalignment between the disk and the inner halo. If a galaxy forms inclined to the principal plane of a dark halo, either the disk will settle to a principal plane or the inner halo will twist to align with the disk. The outer halo will remain misaligned for a much longer time and therefore may still exert a torque. Warped bending modes may still exist if the misalignment of the outer halo persists for a Hubble time. RP DUBINSKI, J (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 55 TC 58 Z9 58 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 APR 1 PY 1995 VL 442 IS 2 BP 492 EP 503 DI 10.1086/175456 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400004 ER PT J AU ESKRIDGE, PB FABBIANO, G KIM, DW AF ESKRIDGE, PB FABBIANO, G KIM, DW TI A MULTIPARAMETRIC ANALYSIS OF THE EINSTEIN SAMPLE OF EARLY-TYPE GALAXIES .2. GALAXY FORMATION HISTORY AND PROPERTIES OF THE INTERSTELLAR-MEDIUM SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, ELLIPTIC AND LENTICULAR, CD; GALAXIES, ISM; GALAXIES, STRUCTURE; X-RAYS, GALAXIES ID ABSORPTION-LINE STRENGTHS; X-RAY-SPECTRA; ELLIPTIC GALAXIES; SURFACE PHOTOMETRY; ASTRONOMICAL DATA; RADIO-EMISSION; STATISTICAL-ANALYSIS; FINE-STRUCTURE; STAR FORMATION; DISK GALAXIES AB We have conducted bivariate and multivariate statistical analysis of data measuring the integrated luminosity, shape, and potential depth of the Einstein sample of early-type galaxies (presented by Fabbiano et al. 1992). We find significant correlations between the X-ray properties and the axial ratios (alb) of our sample, such that the roundest systems tend to have the highest L(X) and L(X)/L(B). The most radio-loud objects are also the roundest. We confirm the assertion of Bender et al. (1989) that galaxies with high L(X) are boxy (have negative a(4)). Both a/b and a(4) are correlated with L(B), but not with IRAS 12 mu m and 100 mu m luminosities. There are strong correlations between L(X), Mg-2, and sigma(v) in the sense that those systems with the deepest potential wells have the highest L(X) and Mg-2. Thus the depth of the potential well appears to govern both the ability to retain an ISM at the present epoch and to retain the enriched ejecta of early star formation bursts. Both L(X)/L(B) and L(6) (the 6 cm radio luminosity) show threshold effects with sigma(v), exhibiting sharp increases at log (sigma(v)) approximate to 2.2. Finally, there is clearly an interrelationship between the various stellar and structural parameters: The scatter in the bivariate relationships between the shape parameters (a/b and a(4)) and the depth parameter (sigma(v)) is a function of abundance in the sense that, for a given a(4) or a/b, the systems with the highest sigma(v) also have the highest Mg-2. Furthermore, for a constant sigma(v), disky galaxies tend to have higher Mg-2 than boxy ones. Alternatively, for a given abundance, boxy ellipticals tend to be more massive than disky ellipticals. One possibility is that early-type galaxies of a given mass, originating from mergers (boxy ellipticals), have lower abundances than ''primordial'' (disky) early-type galaxies. Another is that disky inner isophotes are due not to primordial dissipational collapse, but to either the self-gravitating inner disks of captured spirals or the dissipational collapse of new disk structures from the premerger ISM. The high measured nuclear Mg-2 values would thus be due to enrichment from secondary bursts of star formation triggered by the merging event. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. CHUNGNAM NATL UNIV,DEPT ASTRON & SPACE SCI,TAEJON 305764,SOUTH KOREA. NR 94 TC 35 Z9 35 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 APR 1 PY 1995 VL 442 IS 2 BP 523 EP 537 DI 10.1086/175458 PN 1 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400006 ER PT J AU TREVES, A FINK, HH MALKAN, M WAGNER, SJ WILKES, BJ BAGANOFF, F HEIDT, J PIAN, E SADUN, A SCHAEIDT, S BONNELL, JT BRINKMANN, W DEMARTINO, D MARASCHI, L TANZI, EG ULRICH, MH WAMSTEKER, W AF TREVES, A FINK, HH MALKAN, M WAGNER, SJ WILKES, BJ BAGANOFF, F HEIDT, J PIAN, E SADUN, A SCHAEIDT, S BONNELL, JT BRINKMANN, W DEMARTINO, D MARASCHI, L TANZI, EG ULRICH, MH WAMSTEKER, W TI MULTIFREQUENCY OBSERVATIONS OF KAZ-102 DURING THE ROSAT ALL-SKY SURVEY SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, ACTIVE; QUASARS, INDIVIDUAL (KAZ 102); ULTRAVIOLET, GALAXIES; X-RAYS, GALAXIES ID SPECTRAL ENERGY-DISTRIBUTIONS; ACTIVE GALACTIC NUCLEI; X-RAY-SPECTRA; STANDARD STARS; ULTRAVIOLET; VARIABILITY; QUASARS; IUE; EXTINCTION; CONTINUA AB The bright quasar Kaz 102, which lies in the vicinity of the North Ecliptic Pole, was monitored during the ROSAT All Sky Survey for 121.5 days from 1990 July 30 to 1991 January 25. In the course of the survey, optical photometry with various filters was performed at several epochs, together with UV (IUE) and optical spectrophotometry. The spectral energy distribution in the 3 x 10(14)-3 x 10(17) Hz range is obtained simultaneously among the various frequencies to less than or similar to 1 day. No clear case of variability can be made in the X-rays, while in the optical and UV variability of 10%-20% is apparent. An analysis of IUE and Einstein archives indicates a doubling timescale of years for the UV and soft X-ray flux. The X-ray photon index, which in 1979 was rather flat (Gamma = 0.8(-0.4)(+0.6)), in 1990/1991 was found to be Gamma = 2.22 +/- 0.13, a typical value for radio-quiet quasars in this energy range. The overall energy distribution and the variability are discussed. C1 MAX PLANCK INST EXTRATERR PHYS,D-85740 GARCHING,GERMANY. UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024. LANDESSTERNWARTE HEIDELBERG KONIGSTUHL,D-69117 HEIDELBERG,GERMANY. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. AGNES SCOTT COLL,DEPT PHYS & ASTRON,DECATUR,GA 30030. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. IUE OBSERV,ESA,E-28080 MADRID,SPAIN. UNIV GENOA,DIPARTIMENTO FIS,I-16133 GENOA,ITALY. CNR,IST FIS COSM,I-20133 MILAN,ITALY. EUROPEAN SO OBSERV,D-85748 GARCHING,GERMANY. RP TREVES, A (reprint author), SCUOLA INT SUPER STUDI AVANZATI,VIA BEIRUT 2-4,I-34014 TRIESTE,ITALY. OI Wilkes, Belinda/0000-0003-1809-2364; Pian, Elena/0000-0001-8646-4858 NR 36 TC 9 Z9 9 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD APR 1 PY 1995 VL 442 IS 2 BP 589 EP 596 DI 10.1086/175462 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400010 ER PT J AU WEAVER, KA MUSHOTZKY, RF SERLEMITSOS, PJ WILSON, AS ELVIS, M BRIEL, U AF WEAVER, KA MUSHOTZKY, RF SERLEMITSOS, PJ WILSON, AS ELVIS, M BRIEL, U TI THE ORIGIN OF THE SOFT-X-RAY EXCESS IN THE SEYFERT-2 GALAXY NGC-2110 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 2110); GALAXIES, ISM; GALAXIES, NUCLEI; GALAXIES, SEYFERT; RADIATION MECHANISMS, NONTHERMAL; X-RAYS, GALAXIES ID ACTIVE GALAXIES; EMISSION; SPECTRUM; NGC-1068; NEARBY; GAS; HOT AB We present and discuss an X-ray image and a medium-resolution X-ray spectrum of the Seyfert 2 galaxy NGC 2110 obtained with the high-resolution imager (HRI) on ROSAT (0.1-2.4 keV) and Goddard's Broad Band X-Ray Telescope (BBXRT; 0.3-11 keV), respectively. Spatially resolved soft X-ray emission, which peaks 4 '' to the north of the nucleus and near the position of the highest excitation optical emission line gas, is seen in the HRI observation. The extent has a flux of similar to 3 x 10(-13) ergs cm(-2) s(-1) and accounts for 11% +/- 3% of the total 0.1-2.4 keV flux. To model the BBXRT spectrum, a soft excess component is required which has a flux of similar to 3.5 x 10(-13) ergs cm(-2) s(-1) and accounts for similar to 14% +/- 6% of the total 0.1-2.4 keV flux. In addition, BBXRT confirms the presence of an similar to 175 eV equivalent width Fe Ka fluorescence line in NGC 2110. Because of the good agreement between their fluxes, we propose that the soft excess arises from the spatially resolved X-ray emission, This is contrary to previous suggestions that the spectral soft excess in NGC 2110 is due to leakage of the X-ray continuum through a patchy absorber. The temperature of the gas responsible for the soft excess is too high to be accounted for by local shock heating. In order to explain the soft excess and extent as either scattered continuum X-rays or fluorescence from gas photoionized by the nuclear source, the hard X-rays must be emitted anisotropically. However, the soft excess and extent can be well modeled as thermal emission from a hot, outflowing wind, which may also be responsible for confining at least some portion of the optical narrow line-emitting clouds. C1 UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. MAX PLANCK INST EXTRATERR PHYS,D-85748 GARCHING,GERMANY. NR 44 TC 42 Z9 42 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 APR 1 PY 1995 VL 442 IS 2 BP 597 EP 609 DI 10.1086/175463 PN 1 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400011 ER PT J AU YUSEFZADEH, F ZHAO, JH GOSS, WM AF YUSEFZADEH, F ZHAO, JH GOSS, WM TI H110-ALPHA OBSERVATIONS OF SAGITTARIUS-A WEST - IONIZED-GAS AT PECULIAR VELOCITIES AT THE GALACTIC-CENTER SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXY, CENTER; ISM, INDIVIDUAL (SAGITTARIUS A); RADIO LINES, ISM ID PHYSICAL CONDITIONS; SGR-A; RADIO; KILOMETERS; GALAXY; RESOLUTION; FILAMENTS; DYNAMICS AB We present Very Large Array measurements of H110 alpha radio recombination line emission from Sgr A West with a resolution of 11 '' x 20 ''. These observations detected a number of new kinematic components showing a dramatically different velocity field than expected from circular motion of ionized gas in Sgr A West about the dynamical center of the Galaxy. Recent high-resolution molecular observations show a cloud of absorbing gas at -180 km s(-1) within 30 '' of the Galactic center. We find evidence of an ionized counterpart to this highly blueshifted molecular gas. This result places this highly blueshifted neutral gas in a hot UV dominated environment of the Galactic center. We suggest that the blueshifted clouds are photoionized externally by the intense UV radiation field at the Galactic center. We also detect H110 alpha emission from large-scale linear features known as the ''streamers,'' which run primarily perpendicular to the Galactic plane and lie exterior to the ''three-arm'' spiral structure of Sgr A West and the circumnuclear disk. These observations support an earlier suggestion that the streamers are thermal features whose kinematics deviate from circular motion. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02172. NATL RADIO ASTRON OBSERV,SOCORRO,NM 87131. RP YUSEFZADEH, F (reprint author), NORTHWESTERN UNIV,DEPT PHYS & ASTRON,EVANSTON,IL 60298, USA. NR 24 TC 10 Z9 10 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 APR 1 PY 1995 VL 442 IS 2 BP 646 EP 652 DI 10.1086/175468 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400016 ER PT J AU YI, I AF YI, I TI MAGNETIZED ACCRETION AND SPIN EVOLUTION IN CLASSICAL T-TAURI STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; STARS, MAGNETIC FIELDS; STARS, PRE MAIN SEQUENCE; STARS, ROTATION ID ROTATIONAL EVOLUTION; DISK; INSTABILITY; MODELS AB The classical T Tauri stars' spin rates are observed roughly an order of magnitude smaller than the breakup rates, which is not easily explained by hydrodynamic accretion. Magnetic coupling between accretion disks and protostars may be an explanation for the slow spin rates. We examine whether the general idea of magnetic braking depends on particular model parameters and initial conditions. We show that magnetic braking is a viable explanation for slow spin rates, which depends only very weakly on the model parameters and initial conditions. A large number of combinations of plausible initial conditions lead to final spin rates less than similar to 1/10 of the corresponding break-up rates within similar to 10(6) yr. The final slow spin rates converge to a narrow range which does not depend on initial spin rates. When the magnetic field is amplified during contraction and spin-up, the required initial field strength is roughly (2-3) x 10(2) G, which depends weakly on the exact nature of amplification. If the field remains constant throughout evolution, the field strength is required to be at least greater than 500 G for sufficient magnetic braking. The inner regions of accretion disks are truncated by the stellar magnetospheres. The truncation radius, R(0), is correlated with the final stellar spin rate, Omega*, The final truncation radii lie at 3-10 stellar radii (R*) with an approximate correlation, R(0)/R* approximate to 14[1 - 0.075(Omega*/Omega.)], where Omega. is the solar rotation rate. The spin-truncation radius correlation can be an interesting diagnostic tool for the magnetic braking model. RP YI, I (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 35 TC 30 Z9 31 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 APR 1 PY 1995 VL 442 IS 2 BP 768 EP 777 DI 10.1086/175482 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400030 ER PT J AU WOODS, TN ROTTMAN, GJ WHITE, OR FONTENLA, J AVRETT, EH AF WOODS, TN ROTTMAN, GJ WHITE, OR FONTENLA, J AVRETT, EH TI THE SOLAR LY-ALPHA LINE-PROFILE SO ASTROPHYSICAL JOURNAL LA English DT Article DE LINE, PROFILES; SUN, CHROMOSPHERE; SUN, UV RADIATION ID IRRADIANCE COMPARISON EXPERIMENT-1; PARTIAL REDISTRIBUTION; TRANSITION REGION; ENERGY-BALANCE; LYMAN-ALPHA; COHERENT SCATTERING; MODELS; CHROMOSPHERE; DIFFUSION; QUIET AB Solar Ly alpha irradiance measurements from the SOLar STellar Irradiance Comparison Experiment (SOLSTICE) on the Upper Atmosphere Research Satellite (UARS) have been made since 1991 October with a spectral resolution of 0.1 nm. The uniqueness of the small molecular oxygen cross section near Ly alpha permits the Ly alpha radiation to penetrate much deeper into the atmosphere than the other emissions near Ly alpha. We have taken advantage of this phenomenon by performing solar occultation experiments near Ly alpha to evaluate precisely the instrument scattered light contribution. After correcting for scattered light, the broad wings of the solar Ly alpha line can be extracted out to 5 nm from line center with a typical accuracy of +/-20%. The variability in the Ly alpha wings near 2 nm from line center is about one-half that of the Ly alpha core emission, defined within 0.1 nm from line center. These Ly alpha profile measurements are found to be consistent with the Skylab radiance measurements and theoretical models of the Ly alpha line profile computed using partial redistribution of photons in the source function. C1 SMITHSONIAN ASTROPHYS OBSERV, CAMBRIDGE, MA 02138 USA. RP NATL CTR ATMOSPHER RES, HIGH ALTITUDE OBSERV, POB 3000, BOULDER, CO 80307 USA. NR 20 TC 10 Z9 10 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD APR 1 PY 1995 VL 442 IS 2 BP 898 EP 906 DI 10.1086/175492 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN774 UT WOS:A1995QN77400040 ER PT J AU DAHLEM, M HECKMAN, TM FABBIANO, G AF DAHLEM, M HECKMAN, TM FABBIANO, G TI THE NUCLEAR X-RAY SOURCE IN NGC-3628 - A STRANGE ACTIVE GALACTIC NUCLEUS OR THE MOST LUMINOUS HIGH-MASS X-RAY BINARY KNOWN SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, GENERAL; GALAXIES, INDIVIDUAL (NGC-3628); GALAXIES, SEYFERT; GALAXIES, STARBURST; X-RAYS, GALAXIES ID SPIRAL GALAXY NGC-3628; VLA OBSERVATIONS; ABSORPTION; EMISSION; SPECTRUM AB After 12 years, during which its unabsorbed soft X-ray flux in the 0.1-2.0 keV band was almost constant at about f(x) approximately 10(-12) ergs s-1 cm-2, the compact nuclear source in NGC 3628 was not detected in one of our ROSAT observations, with a limiting sensitivity of f(x) congruent-to 5 x 10(-14) ergs s-1 cm-2. Our data can be explained in two ways. The source is either the most massive X-ray binary known so far, with a greater-than-or-similar-to 75 M. black hole, or an unusual low-luminosity AGN. The X-ray spectrum is typical of a high-mass X-ray binary, while the luminosity of the source of L(x) congruent-to 10(40) ergs s-1 is more similar to those low-luminosity AGNs. If it is an AGN, variable obscuration might explain the observed light curve. C1 JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 32 TC 26 Z9 26 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 APR 1 PY 1995 VL 442 IS 2 BP L49 EP L52 DI 10.1086/187813 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN776 UT WOS:A1995QN77600002 ER PT J AU KORISTA, KT ALLOIN, D BARR, P CLAVEL, J COHEN, RD CRENSHAW, DM EVANS, IN HORNE, K KORATKAR, AP KRISS, GA KROLIK, JH MALKAN, MA MORRIS, SL NETZER, H OBRIEN, PT PETERSON, BM REICHERT, GA RODRIGUEZPASCUAL, PM WAMSTEKER, W ANDERSON, KSJ AXON, DJ BENITEZ, E BERLIND, P BERTRAM, R BLACKWELL, JH BOCHKAREV, NG BOISSON, C CARINI, M CARRILLO, R CARONE, TE CHENG, FZ CHRISTENSEN, JA CHUVAEV, KK DIETRICH, M DOKTER, JJ DOROSHENKO, V DULTZINHACYAN, D ENGLAND, MN ESPEY, BR FILIPPENKO, AV GASKELL, CM GOAD, MR HO, LC HUCHRA, JP JIANG, XJ KASPI, S KOLLATSCHNY, W LAOR, A LUMINET, JP MACALPINE, GM MACKENTY, JW MALKOV, YF MAOZ, D MARTIN, PG MATHESON, T MCCOLLUM, B MERKULOVA, N METIK, L MIGNOLI, M MILLER, HR PASTORIZA, MG PELAT, D PENFOLD, J PEREZ, M PEROLA, GC PERSAUD, JL PETERS, J PITTS, R POGGE, RW PRONIK, I PRONIK, VI PTAK, RL RAWLEY, L RECONDOGONZALEZ, MC RODRIGUEZESPINOSA, JM ROMANISHIN, W SADUN, AC SALAMANCA, I SANTOSLLEO, M SEKIGUCHI, K SERGEEV, SG SHAPOVALOVA, AI SHIELDS, JC SHRADER, C SHULL, JM SILBERMANN, NA SITKO, ML SKILLMAN, DR SMITH, HA SMITH, SM SNIJDERS, MAJ SPARKE, LS STIRPE, GM STONER, RE SUN, WH THIELE, U TOKARZ, S TSVETANOV, ZI TURNSHEK, DA VEILLEUX, S WAGNER, RM WAGNER, SJ WANDERS, I WANG, T WELSH, WF WEYMANN, RJ WHITE, RJ WILKES, BJ WILLS, BJ WINGE, C WU, H ZOU, ZL AF KORISTA, KT ALLOIN, D BARR, P CLAVEL, J COHEN, RD CRENSHAW, DM EVANS, IN HORNE, K KORATKAR, AP KRISS, GA KROLIK, JH MALKAN, MA MORRIS, SL NETZER, H OBRIEN, PT PETERSON, BM REICHERT, GA RODRIGUEZPASCUAL, PM WAMSTEKER, W ANDERSON, KSJ AXON, DJ BENITEZ, E BERLIND, P BERTRAM, R BLACKWELL, JH BOCHKAREV, NG BOISSON, C CARINI, M CARRILLO, R CARONE, TE CHENG, FZ CHRISTENSEN, JA CHUVAEV, KK DIETRICH, M DOKTER, JJ DOROSHENKO, V DULTZINHACYAN, D ENGLAND, MN ESPEY, BR FILIPPENKO, AV GASKELL, CM GOAD, MR HO, LC HUCHRA, JP JIANG, XJ KASPI, S KOLLATSCHNY, W LAOR, A LUMINET, JP MACALPINE, GM MACKENTY, JW MALKOV, YF MAOZ, D MARTIN, PG MATHESON, T MCCOLLUM, B MERKULOVA, N METIK, L MIGNOLI, M MILLER, HR PASTORIZA, MG PELAT, D PENFOLD, J PEREZ, M PEROLA, GC PERSAUD, JL PETERS, J PITTS, R POGGE, RW PRONIK, I PRONIK, VI PTAK, RL RAWLEY, L RECONDOGONZALEZ, MC RODRIGUEZESPINOSA, JM ROMANISHIN, W SADUN, AC SALAMANCA, I SANTOSLLEO, M SEKIGUCHI, K SERGEEV, SG SHAPOVALOVA, AI SHIELDS, JC SHRADER, C SHULL, JM SILBERMANN, NA SITKO, ML SKILLMAN, DR SMITH, HA SMITH, SM SNIJDERS, MAJ SPARKE, LS STIRPE, GM STONER, RE SUN, WH THIELE, U TOKARZ, S TSVETANOV, ZI TURNSHEK, DA VEILLEUX, S WAGNER, RM WAGNER, SJ WANDERS, I WANG, T WELSH, WF WEYMANN, RJ WHITE, RJ WILKES, BJ WILLS, BJ WINGE, C WU, H ZOU, ZL TI STEPS TOWARD DETERMINATION OF THE SIZE AND STRUCTURE OF THE BROAD-LINE REGION IN ACTIVE GALACTIC NUCLEI .8. AN INTENSIVE HST, IUE, AND GROUND-BASED STUDY OF NGC-5548 SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE GALAXIES, ACTIVE; GALAXIES, INDIVIDUAL(NGC 5548); GALAXIES, NUCLEI GALAXIES, PHOTOMETRY; GALAXIES, SEYFERT; ULTRAVIOLET, GALAXIES ID SEYFERT-GALAXY NGC-5548; OPTICAL WAVELENGTHS; EMISSION; VARIABILITY; GEOMETRY; QUASARS AB We present the data and initial results from a combined HST/IUE/ground-based spectroscopic monitoring campaign on the Seyfert 1 galaxy NGC 5548 that was undertaken in order to address questions that require both higher temporal resolution and higher signal-to-noise ratios than were obtained in our previous multiwavelength monitoring of this galaxy in 1988-1989. IUE spectra were obtained once every 2 days for a period of 74 days beginning on 1993 March 14. During the last 39 days of this campaign, spectroscopic observations were also made with the HST Faint Object Spectrograph (FOS) on a daily basis. Ground-based observations, consisting of 165 optical spectra and 77 photometric observations(both CCD imaging and aperture photometry), are reported for the period 1992 October-1993 September, although many of the data are concentrated around the time of the satellite-based program. These data constitute a fifth year of intensive optical monitoring of this galaxy. In this contribution we describe the acquisition and reduction of all of the satellite and ground-based data obtained in this program. We describe in detail various photometric problems with the FOS and explain how we identified and corrected for various anomalies. During the HST portion of the monitoring campaign, the 1350 Angstrom continuum flux is found to have varied by nearly a factor of 2. In other wave bands, the continuum shows nearly identical behavior, except that the amplitude of variability is larger at shorter wavelengths, and the continuum light curves appear to show more short-timescale variability at shorter wavelengths. The broad emission lines also vary in flux, with amplitudes that are slightly smaller than the UV continuum variations and with a small time delay relative to the UV continuum. On the basis of simple time-series analysis of the UV and optical continuum and emission-line light curves, we find (1)that the ultraviolet and optical continuum variations are virtually simultaneous, with any lag between the 1350 Angstrom continuum and the 5100 Angstrom continuum amounting to less than about 1 day; (2)that the variations in the highest ionization lines observed, He II lambda 1640 and N V lambda 1240, lag behind the continuum variations by somewhat less than 2 days; and (3) that the velocity held of the C IV-emitting region is not dominated by radial motion. The results on the C Iv velocity held are preliminary and quite uncertain, but there are some weak indications that the emission-line wings(\Delta upsilon\ greater than or equal to 3000 km s(-1)) respond to continuum variations slightly more rapidly than does the core. The optical observations show that the variations in the broad H beta line flux follow the continuum variations with a time lag of around 2 weeks, about twice the lag for Ly alpha and C Iv, as in our previous monitoring campaign on this same galaxy. However, the lags measured for Ly alpha, C Iv, and H beta are each slightly smaller than previous determinations. We confirm two trends reported earlier, namely, (1) that the UV/optical continuum becomes ''harder'' as it gets brighter and (2) that the highest ionization emission lines have the shortest lags, thus indicating radial ionization stratification of a broad-line region that spans over an order of magnitude range in radius. C1 SPACE TELESCOPE SCI INST, BALTIMORE, MD 21218 USA. OBSERV PARIS, CNRS, URA 173, F-92195 MEUDON, FRANCE. EUROPEAN SPACE TECHNOL CTR, EUROPEAN SPACE AGCY, DIV ASTROPHYS, ISO OBSERV, 2200 AG NOORDWIJK, NETHERLANDS. UNIV CALIF SAN DIEGO, CTR ASTROPHYS & SPACE SCI, LA JOLLA, CA 92093 USA. NASA, GODDARD SPACE FLIGHT CTR, COMP SCI CORP, ASTRON PROGRAM, GREENBELT, MD 20771 USA. UNIV UTRECHT, STERREKUNDIG INST, 3508 TA UTRECHT, NETHERLANDS. JOHNS HOPKINS UNIV, DEPT PHYS & ASTRON, BALTIMORE, MD 21218 USA. UNIV CALIF LOS ANGELES, DEPT ASTRON, LOS ANGELES, CA 90024 USA. DOMINION ASTROPHYS OBSERV, VICTORIA, BC V8X 4M6, CANADA. TEL AVIV UNIV, SCH PHYS & ASTRON, IL-69978 TEL AVIV, ISRAEL. TEL AVIV UNIV, WISE OBSERV, IL-69978 TEL AVIV, ISRAEL. UNIV OXFORD, DEPT ASTROPHYS, OXFORD OX1 3RH, ENGLAND. OHIO STATE UNIV, DEPT ASTRON, COLUMBUS, OH 43210 USA. NASA, GODDARD SPACE FLIGHT CTR, UNIV SPACE RES ASSOC, GREENBELT, MD 20771 USA. EUROPEAN SPACE AGCY, IUE OBSERV, E-28080 MADRID, SPAIN. NEW MEXICO STATE UNIV, DEPT ASTRON, LAS CRUCES, NM 88003 USA. UNIV MANCHESTER, NUFFIELD RADIO ASTRON LABS, MACCLESFIELD SK11 9DL, CHESHIRE, ENGLAND. EUROPEAN SPACE AGCY, SPACE TELESCOPE SCI INST, BALTIMORE, MD 21218 USA. UNIV NACL AUTONOMA MEXICO, INST ASTRON, MEXICO CITY 04510, DF, MEXICO. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. MOSCOW MV LOMONOSOV STATE UNIV, STERNBERG ASTRON INST, MOSCOW, RUSSIA. UNIV CALIF BERKELEY, SPACE SCI LAB, BERKELEY, CA 94720 USA. LOWELL OBSERV, FLAGSTAFF, AZ 86001 USA. UNIV SCI & TECHNOL CHINA, CTR ASTROPHYS, HEFEI, PEOPLES R CHINA. CRIMEAN ASTROPHYS OBSERV, NAUCHNYI 334413, UKRAINE. UNIV STERNWARTE GOTTINGEN, D-37083 GOTTINGEN, GERMANY. LANDESSTERNWARTE KONIGSTUHL, D-69117 HEIDELBERG, GERMANY. UNIV NEBRASKA, DEPT PHYS & ASTRON, LINCOLN, NE 68588 USA. UNIV CALIF BERKELEY, DEPT ASTRON, BERKELEY, CA 94720 USA. UCL, DEPT PHYS & ASTRON, LONDON WC1E 6BT, ENGLAND. CHINESE ACAD SCI, BEIJING ASTRON OBSERV, BEIJING, PEOPLES R CHINA. CALTECH, DEPT ASTRON, PASADENA, CA 91125 USA. UNIV MICHIGAN, DEPT ASTRON, ANN ARBOR, MI 48109 USA. UNIV TORONTO, CANADIAN INST THEORET ASTROPHYS, TORONTO, ON M5S 1A1, CANADA. OSSERV ASTRON BOLOGNA, I-40126 BOLOGNA, ITALY. GEORGIA STATE UNIV, DEPT PHYS & ASTRON, ATLANTA, GA 30303 USA. UNIV FED RIO GRANDE SUL, INST FIS, DEPT ASTRON, BR-91500 PORTO ALEGRE, RS, BRAZIL. UNIV CALGARY, DEPT PHYS & ASTRON, CALGARY, AB T2N 1N4, CANADA. MT ROYAL COLL, DEPT MATH PHYS & ENGN, CALGARY, AB T3E 6K6, CANADA. UNIV ROME, IST ASTRON, I-00161 ROME, ITALY. UNIV CAMBRIDGE, INST ASTRON, CAMBRIDGE CB3 0HA, ENGLAND. BOWLING GREEN STATE UNIV, DEPT PHYS & ASTRON, BOWLING GREEN, OH 43403 USA. INST ASTROFIS CANARIAS, E-38200 LA LAGUNA, SPAIN. UNIV OKLAHOMA, DEPT PHYS & ASTRON, NORMAN, OK 73019 USA. AGNES SCOTT COLL, BRADLEY OBSERV, DECATUR, GA 30030 USA. AGNES SCOTT COLL, DEPT PHYS & ASTRON, DECATUR, GA 30030 USA. S AFRICAN ASTRON OBSERV, CAPE TOWN 7935, SOUTH AFRICA. RUSSIAN ACAD SCI, SPECIAL ASTROPHYS OBSERV, NIZHNI ARKHYZ 357140, RUSSIA. UNIV ARIZONA, STEWARD OBSERV, TUCSON, AZ 85721 USA. NASA, GODDARD SPACE FLIGHT CTR, GRO SCI SUPPORT CTR, COMP SCI CORP, GREENBELT, MD 20771 USA. UNIV COLORADO, NATL INST STAND & TECHNOL, BOULDER, CO 80309 USA. UNIV COLORADO, JOINT INST LAB ASTROPHYS, BOULDER, CO 80309 USA. MICHIGAN STATE UNIV, DEPT PHYS & ASTRON, E LANSING, MI 48824 USA. UNIV CINCINNATI, DEPT PHYS, CINCINNATI, OH 45221 USA. CTR BASEMENT ASTROPHYS, LAUREL, MD 20723 USA. IRAM, F-38046 ST MARTIN DHERES, FRANCE. UNIV WISCONSIN, DEPT ASTRON, MADISON, WI 53706 USA. NATL CENT UNIV, INST ASTRON, CHUNGLI 32054, TAIWAN. MAX PLANCK INST ASTRON, KONIGSTUHL, D-69117 HEIDELBERG, GERMANY. UNIV PITTSBURGH, DEPT PHYS & ASTRON, PITTSBURGH, PA 15260 USA. KITT PEAK NATL OBSERV, NATL OPT ASTRON OBSERV, TUCSON, AZ 85726 USA. ASTRON OBSERV, S-75120 UPPSALA, SWEDEN. UNIV KEELE, DEPT PHYS, KEELE ST5 5BG, STAFFS, ENGLAND. CARNEGIE INST WASHINGTON OBSERV, PASADENA, CA 91101 USA. UNIV TEXAS, MCDONALD OBSERV, AUSTIN, TX 78712 USA. UNIV TEXAS, DEPT ASTRON, AUSTIN, TX 78712 USA. RI Morris, Simon/G-7981-2011; 王, 挺贵/B-8293-2013; Skillman, David/C-8995-2013; Recondo, Carmen/B-1215-2012; Stirpe, Giovanna/O-9393-2015; Mignoli, Marco/O-9426-2015; OI Morris, Simon/0000-0003-4866-110X; Recondo, Carmen/0000-0001-9813-6798; Stirpe, Giovanna/0000-0002-3702-8731; Mignoli, Marco/0000-0002-9087-2835; Espey, Brian/0000-0002-2457-1380; Gaskell, C/0000-0003-4888-2009; SUN, WEI-HSIN/0000-0002-7474-8658 NR 47 TC 229 Z9 229 U1 1 U2 8 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD APR PY 1995 VL 97 IS 2 BP 285 EP 330 DI 10.1086/192144 PG 46 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN780 UT WOS:A1995QN78000004 ER PT J AU BRICKHOUSE, NS RAYMOND, JC SMITH, BW AF BRICKHOUSE, NS RAYMOND, JC SMITH, BW TI NEW MODEL OF IRON SPECTRA IN THE EXTREME-ULTRAVIOLET AND APPLICATION TO SERTS AND EUVE OBSERVATIONS - A SOLAR ACTIVE-REGION AND CAPELLA SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE ATOMIC PROCESSES; STARS, CORONAE; STARS, INDIVIDUAL (ALPHA AURIGAE); SUN, CORONA ULTRAVIOLET, STARS ID ELECTRON-IMPACT EXCITATION; FINE-STRUCTURE TRANSITIONS; HIGHLY IONIZED IRON; ATOMIC DATA; FE-XII; OSCILLATOR-STRENGTHS; COLLISION STRENGTHS; LINE INTENSITIES; ISOELECTRONIC SEQUENCE; DENSITY DIAGNOSTICS AB We report new predictions for the EUV spectral emission of Fe IX-Fe XXIV. The iron spectral emission model is the first result of a larger effort to revise the Raymond and Smith model and to update the atomic rates. We present here predicted emissivities for selected densities and temperatures applicable to various astrophysical plasmas. Comparisons of our predicted spectra with two recent observations provide important tests of the atomic data. They also test to some extent some basic assumptions of coronal emission codes: optically thin spectral lines and ionization equilibrium. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP BRICKHOUSE, NS (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Brickhouse, Nancy/0000-0002-8704-4473 NR 99 TC 157 Z9 157 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD APR PY 1995 VL 97 IS 2 BP 551 EP 570 DI 10.1086/192150 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QN780 UT WOS:A1995QN78000010 ER PT J AU McShea, WJ McDonald, MV Morton, ES Meier, R Rappole, JH AF McShea, WJ McDonald, MV Morton, ES Meier, R Rappole, JH TI Long-term trends in habitat selection by Kentucky Warblers SO AUK LA English DT Article ID MODELS; DEER AB Microhabitat selection of the Kentucky Warbler (Oporornis formosus), a forest-interior Neotropical migrant, was examined using a geographical information system. The distribution of territorial male Kentucky Warblers was mapped within a 460-ha study area in northwestern Virginia from 1979 through 1992. Each annual distribution of territories was compared, using logistic regression, to a random distribution of territories with respect to habitat features codified within a vector-based geographical information system. Kentucky Warblers selected forested areas with cove hardwoods and avoided oak/hickory overstory. The warblers also were found more often in areas that contained streams and in areas with low white-tailed deer (Odocoileus virginianus) densities. Since 1979 there have been significant shifts in Kentucky Warbler use of habitat at this site, resulting in fewer territories within oak/hickory and edge habitats. C1 UNIV CENT ARKANSAS, DEPT ZOOL, CONWAY, AR 72032 USA. SMITHSONIAN INST, NATL ZOOL PK, DEPT ZOOL RES, WASHINGTON, DC 20008 USA. RP McShea, WJ (reprint author), NATL ZOOL PK, DEPT CONSERVAT, FRONT ROYAL, VA 22630 USA. NR 24 TC 22 Z9 22 U1 0 U2 5 PU AMER ORNITHOLOGISTS UNION PI LAWRENCE PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 USA SN 0004-8038 J9 AUK JI AUK PD APR PY 1995 VL 112 IS 2 BP 375 EP 381 PG 7 WC Ornithology SC Zoology GA TX683 UT WOS:A1995TX68300008 ER PT J AU Haig, SM Ballou, JD AF Haig, SM Ballou, JD TI Genetic diversity in two avian species formerly endemic to Guam SO AUK LA English DT Article ID EXTRA-PAIR PATERNITY; INTRODUCED POPULATIONS; AVERAGE HETEROZYGOSITY; ACRIDOTHERES-TRISTIS; PASSER-DOMESTICUS; NEW-ZEALAND; DIFFERENTIATION; DIVERGENCE; BOTTLENECK; ELECTROPHORESIS AB We examine genetic diversity within endemic island avian species that recently went extinct in the wild and compare results with nonendangered, nonendemic, and non-island species. The Micronesian Kingfisher (Halcyon cinnamomina cinnamomina) and nightless Guam Rail (Rallus owstoni) once were endemic to the Pacific island of Guam and now survive only in captivity. Horizontal starch-gel electrophoresis and minisatellite DNA profiles were used to measure genetic diversity within and among the rails, kingfishers and closely related species. Allozyme analyses of Micronesian Kingfishers revealed no genetic diversity (29 enzymes screened). DNA profiles were variable, although similarity (S) among founders to the captive kingfisher population was high relative to nonendangered birds (S = 0.56 +/- SE of 0.02; 89 bands scored/individual). Three other Halcyon species examined had average allozyme heterozygosity and DNA similarity. Guam Rails had average to high allozyme heterozygosity as measured by four polymorphic loci (H = 0.03 to 0.05) relative to four other rail species (3 Rallus spp., 1 Porzana sp.). However, S (0.62 +/- 0.02) was higher than in Micronesian Kingfishers. Further analyses indicated a significant deviation from Hardy-Weinberg equilibrium in two of three polymorphic loci for captive Guam Rails. Our results suggest that caution be taken in making generalizations about genetic diversity in island species. The type and number of genetic techniques used, number of species or populations examined, and variance in life-history traits among species must be considered. C1 SMITHSONIAN INST,NATL ZOO,DEPT ZOOL RES,WASHINGTON,DC 20008. CLEMSON UNIV,S CAROLINA COOPERAT FISH & WILDLIFE RES UNIT,CLEMSON,SC 29634. NR 79 TC 21 Z9 22 U1 2 U2 10 PU AMER ORNITHOLOGISTS UNION PI LAWRENCE PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 SN 0004-8038 J9 AUK JI AUK PD APR PY 1995 VL 112 IS 2 BP 445 EP 455 PG 11 WC Ornithology SC Zoology GA TX683 UT WOS:A1995TX68300016 ER PT J AU DEQUEIROZ, K AF DEQUEIROZ, K TI THE DEFINITIONS OF SPECIES AND CLADE NAMES - A REPLY TO GHISELIN SO BIOLOGY & PHILOSOPHY LA English DT Article DE CLADE; CLASS; DEFINITION; DEFINING PROPERTY; INDIVIDUAL; INTENSION; NAME; ORGANISM; OSTENSIVE DEFINITION; SPECIES; TAXON; TAXONOMY ID PHYLOGENETIC DEFINITIONS RP DEQUEIROZ, K (reprint author), SMITHSONIAN INST,NATL MUSEUM AMER HIST,DEPT VERTEBRATE ZOOL,WASHINGTON,DC 20560, USA. NR 7 TC 24 Z9 25 U1 1 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0169-3867 J9 BIOL PHILOS JI Biol. Philos. PD APR PY 1995 VL 10 IS 2 BP 223 EP 228 PG 6 WC History & Philosophy Of Science SC History & Philosophy of Science GA QW642 UT WOS:A1995QW64200005 ER PT J AU VANWAGTENDONKDELEEUW, AM DENDAAS, JHG KRUIP, TAM RALL, WF AF VANWAGTENDONKDELEEUW, AM DENDAAS, JHG KRUIP, TAM RALL, WF TI COMPARISON OF THE EFFICACY OF CONVENTIONAL SLOW FREEZING AND RAPID CRYOPRESERVATION METHODS FOR BOVINE EMBRYOS SO CRYOBIOLOGY LA English DT Article ID FROZEN-THAWED EMBRYOS; CATTLE EMBRYOS; MOUSE EMBRYOS; SURVIVAL; VITRIFICATION; DILUTION; STRAW; GLYCEROL; INVITRO AB Day 7 bovine morulae and early blastocysts were randomly assigned to one of four cryopreservation methods: (i) a modified conventional controlled slow freezing and stepwise dilution after thawing; and three methods which enable direct transfer of the embryo into the recipient upon thawing: (ii) conventional controlled slow freezing and a modification of a one-step procedure, (iii) vitrification with 6.5 M glycerol plus 6% BSA (w/v), and (iv) vitrification with 25% glycerol (v/v) and 25% propanediol (v/v). In a comparative in vitro study, the percentage of grade 1 and 2 embryos developing into expanded blastocysts in culture for cryopreservation methods 1-4 were, respectively, 53% (29/55), 33% (20/61), 44% (26/59), and 51% (17/33). Method 2 yielded a significantly lower survival rate than methods 1 (P < 0.1) and 4 (P < 0.05) and was excluded from a subsequent test of in vivo development. Pregnancy rates (Day 60) after transfer of embryos cryopreserved by methods 1, 3, and 4 were, respectively, 59% (20/34), 43% (17/40), and 24% (5/21). Method 4 yielded a significantly lower pregnancy rate than method 1 (P < 0.05). Method 3, however, did not yield a statistically different pregnancy rate (P > 0.1) when compared to method 1. Method 3 has considerable promise in providing a successful method for the cryopreservation of bovine embryos that (i) reduces the time required for equilibration and cooling, (ii) provides for simple and rapid one-step dilution of cryoprotectant after thawing, and (iii) enables more embryos to be thawed and transferred per unit time. (C) 1995 Academic Press, Inc. C1 EMBRYTEC BV,3704 JA ZEIST,NETHERLANDS. SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008. RP VANWAGTENDONKDELEEUW, AM (reprint author), HOLLAND GENET,POSTBUS 5073,6802 EB ARNHEM,NETHERLANDS. NR 33 TC 36 Z9 38 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0011-2240 J9 CRYOBIOLOGY JI Cryobiology PD APR PY 1995 VL 32 IS 2 BP 157 EP 167 DI 10.1006/cryo.1995.1014 PG 11 WC Biology; Physiology SC Life Sciences & Biomedicine - Other Topics; Physiology GA QR288 UT WOS:A1995QR28800005 PM 7743817 ER PT J AU PEARSALL, DM PIPERNO, DR DINAN, EH UMLAUF, R ZHAO, ZJ BENFER, RA AF PEARSALL, DM PIPERNO, DR DINAN, EH UMLAUF, R ZHAO, ZJ BENFER, RA TI DISTINGUISHING RICE (ORYZA-SATIVA POACEAE) FROM WILD ORYZA SPECIES THROUGH PHYTOLITH ANALYSIS - RESULTS OF PRELIMINARY RESEARCH SO ECONOMIC BOTANY LA English DT Article DE ORYZA SATIVA; ASIA; CHINA; PHYTOLITH ID ORIGIN AB Asian rice is an important grain, not only in its homeland but in many areas of the world Identifying rice in the archaeological record is a challenge, especially in the moist tropics, where organic materials preserve only when charred. Phytolith analysis, the identification of opaline silica bodies, provides an alternative method for identifying this important crop. Results of our research suggest that Oryza contributes phytoliths that are genus-specific, that bulliform characteristics alone do not permit separation of wild and domesticated Oryza in regions where species overlap, and that a number of phytolith types, especially silicified glumes, show promise for separating wild from domesticated forms. With further research it should be possible to identify, rice through its phytolith assemblage in archaeological soils in the heartland of its domestication and use. C1 SMITHSONIAN TROP RES INST,MIAMI,FL 34002. UNIV PENN MUSEUM,MASCA,PHILADELPHIA,PA 19104. UNIV ILLINOIS,DEPT ANTHROPOL,URBANA,IL 61820. NO ARIZONA UNIV,BILBY RES CTR,FLAGSTAFF,AZ 86011. RP PEARSALL, DM (reprint author), UNIV MISSOURI,DEPT ANTHROPOL,107 SWALLOW HALL,COLUMBIA,MO 65211, USA. NR 35 TC 76 Z9 84 U1 3 U2 7 PU NEW YORK BOTANICAL GARDEN PI BRONX PA PUBLICATIONS DEPT, BRONX, NY 10458 SN 0013-0001 J9 ECON BOT JI Econ. Bot. PD APR-JUN PY 1995 VL 49 IS 2 BP 183 EP 196 DI 10.1007/BF02862923 PG 14 WC Plant Sciences SC Plant Sciences GA RB512 UT WOS:A1995RB51200005 ER PT J AU CHEETHAM, AH JACKSON, JBC HAYEK, LAC AF CHEETHAM, AH JACKSON, JBC HAYEK, LAC TI QUANTITATIVE GENETICS OF BRYOZOAN PHENOTYPIC EVOLUTION .3. PHENOTYPIC PLASTICITY AND THE MAINTENANCE OF GENETIC-VARIATION SO EVOLUTION LA English DT Article DE BRYOZOA; GENOTYPE-ENVIRONMENT INTERACTION; PHENOTYPIC VARIANCE; SKELETAL MORPHOLOGY; STYLOPOMA ID GENOTYPE-ENVIRONMENT INTERACTIONS; MARINE BRYOZOAN; SELECTION; CONSEQUENCES; VARIABILITY; POPULATION AB Cheilostome bryozoan species show long-term morphologic stasis, implying stabilizing selection sustained for millions of years, but nevertheless retain significant heritable variation in traits of skeletal morphology. The possible role of within-genotype (within-colony) phenotypic variability in preserving genetic diversity was analyzed using breeding data for two species of Stylopoma from sites along 110 km of the Caribbean coast of Panama. Variation among zooids within colonies accounts for nearly two-thirds of the phenotypic variance on average, increases with environmental heterogeneity, and includes significant genotype-environment interaction. Thus, within-colony variability apparently represents phenotypic plasticity, at least some of which is heritable, rather than random ''developmental noise.'' Almost all of the among-colonies component of phenotypic variance is accounted for by additive genetic differences in trait means, suggesting that within-colony plasticity includes virtually all of the environmental component of phenotypic variance in these populations of Stylopoma. Thus, heritable within-colony plasticity could play a significant part in maintaining genetic diversity in cheilostomes, but it is also possible that rates of polygenic mutation alone are sufficient to balance the effects of selection. C1 SMITHSONIAN TROP RES INST,CTR TROP PALEOECOL & ARCHAEOL,BALBOA,PANAMA. SMITHSONIAN INST,WASHINGTON,DC 20560. RP CHEETHAM, AH (reprint author), NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560, USA. NR 44 TC 28 Z9 28 U1 0 U2 6 PU SOC STUDY EVOLUTION PI LAWRENCE PA 810 E 10TH STREET, LAWRENCE, KS 66044 SN 0014-3820 J9 EVOLUTION JI Evolution PD APR PY 1995 VL 49 IS 2 BP 290 EP 296 DI 10.2307/2410339 PG 7 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA RR186 UT WOS:A1995RR18600007 ER PT J AU FELLEY, JD VECCHIONE, M AF FELLEY, JD VECCHIONE, M TI ASSESSING HABITAT USE BY NEKTON ON THE CONTINENTAL-SLOPE USING ARCHIVED VIDEOTAPES FROM SUBMERSIBLES SO FISHERY BULLETIN LA English DT Article ID EPIBENTHIC MEGAFAUNA; COMMUNITY STRUCTURE; PACIFIC-OCEAN; NEW-ENGLAND; NEWFOUNDLAND; BENTHOS; CAROLINA; ECOLOGY; FISHES; PISCES AB Videotapes of the sea floor were taken from a submersible during dives at two areas on the continental slope off Cape Hatteras and Cape Lookout, North Carolina, in September 1989. We counted demersal nekton, epifauna, and environmental features for 1-minute intervals from video transects. Common morphospecies of demersal nekton were identified, and multivariate analyses were performed to find environmental features that related to habitat use by these forms. In both areas, the ocean floor was extensively sculptured with holes and mounds, and both small and large sea anemones were commonly observed. Crinoids were seen in Cape Hatteras dives. Small sea anemones were much more abundant off Cape Hatteras, whereas holes and mounds were more densely distributed off Cape Lookout. Rattails, hake, and sergestid shrimp were common at both locations. Eels were extremely abundant at the Cape Lookout site, whereas eelpouts, flounder, and lizardfish were found only at the Cape Hatteras location. At both locations, analyses of nekton habitat choices showed that habitat selection was related to density of the holes and mounds made by infauna and to density of the epifauna, such as crinoids and the different types of anemones. Hake, squid, sergestid shrimp, and lizardfish showed the strongest evidence of habitat selection. Analysis of videotapes, originally recorded for other purposes, is a cost-effective means for preliminary examination of the problems that may only be addressed by in situ observations. C1 NATL MUSEUM NAT HIST,NATL MARINE FISHERIES SERV,SYSTEMAT LAB,WASHINGTON,DC 20560. RP FELLEY, JD (reprint author), SMITHSONIAN INST,OFF INFORMAT RESOURCE MANAGEMENT,ROOM 2310,A&I BLDG,WASHINGTON,DC 20560, USA. NR 32 TC 19 Z9 19 U1 0 U2 1 PU NATL MARINE FISHERIES SERVICE SCIENTIFIC PUBL OFFICE PI SEATTLE PA 7600 SAND POINT WAY NE BIN C15700, SEATTLE, WA 98115 SN 0090-0656 J9 FISH B-NOAA JI Fish. Bull. PD APR PY 1995 VL 93 IS 2 BP 262 EP 273 PG 12 WC Fisheries SC Fisheries GA QR392 UT WOS:A1995QR39200005 ER PT J AU CHAMBERS, JE AF CHAMBERS, JE TI THE LONG-TERM DYNAMICAL EVOLUTION OF COMET SWIFT-TUTTLE SO ICARUS LA English DT Article AB Periodic comet Swift-Tuttle is the largest known object in the Solar System whose current orbit allows it to make repeated close approaches to the Earth. As such it poses a significant impact hazard. In addition, P/Swift-Tuttle possesses the second longest observing arc of any comet, with recorded observations spanning two millennia. These data place extremely tight constraints on the current orbit. This paper analyzes the likely dynamical evolution of P/Swift-Tuttle for 40,000 years centered on the present. The evolution is uncertain prior to the earliest observations in 69 BC; however, given that nongravitational forces appear to be negligible, the future evolution is clear until an exceptionally close encounter with Earth in 4479 AD. Beyond this date, the current librations about the 1:11 mean-motion resonance with Jupiter will continue until at least 7000 AD, while the orbital descending node is likely to remain within 0.1 AU of Earth's orbit for the next 20,000 years. The resonant librations increase the orbit's Lyapunov time by a factor of two in the future and strongly influence the movement of the orbital nodes. The librations are maintained by indirect rather than direct planetary perturbations, which explains why a retrograde comet of such long orbital period is located in a resonance, and why Jupiter is the resonant planet. After 4479 the probability of impacting Earth is roughly 2 X 10(-8) per revolution until 12,000 AD, while the chance of a collision in 4479 is of order 1 in 10(6). (C) 1995 Academic Press, Inc. C1 CARNEGIE INST WASHINGTON,DEPT TERR MAGNETISM,WASHINGTON,DC 20015. RP CHAMBERS, JE (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 22 TC 8 Z9 8 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 0019-1035 J9 ICARUS JI Icarus PD APR PY 1995 VL 114 IS 2 BP 372 EP 386 DI 10.1006/icar.1995.1069 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU162 UT WOS:A1995QU16200013 ER PT J AU BLUNDELL, R TONG, CYE PAPA, DC LEOMBRUNO, RL ZHANG, XL PAINE, S STERN, JA LEDUC, HG BUMBLE, B AF BLUNDELL, R TONG, CYE PAPA, DC LEOMBRUNO, RL ZHANG, XL PAINE, S STERN, JA LEDUC, HG BUMBLE, B TI A WIDE-BAND FIXED-TUNED SIS RECEIVER FOR 200-GHZ OPERATION SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Article; Proceedings Paper CT 5th International Symposium on Space Terahertz Technology CY MAY, 1994 CL UNIV MICHIGAN, ANN ARBOR, MI HO UNIV MICHIGAN ID RADIO ASTRONOMY AB We report on the design and development of a heterodyne receiver, designed to cover the frequency range 176-256 GHz. This receiver incorporates a niobium superconductor-insulator-superconductor (SIS) tunnel junction mixer, which, chiefly for reasons of reliability and ease of operation, is a fixed-tuned waveguide design, On-chip tuning is provided to resonate out the junction's geometric capacitance and produce a good match to the waveguide circuit, Laboratory measurements on the first test receiver indicate that the required input bandwidth (about 40%) is achieved with an average receiver noise temperature of below 50 K, Mixer conversion gain is observed at some frequencies, and the lowest measured receiver noise is less than 30 K, Furthermore, the SIS mixer used in this receiver is of simple construction, is easy to assemble and is therefore a good candidate for duplication. C1 CALTECH,JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. RP BLUNDELL, R (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Tong, Edward/0000-0002-7736-4203 NR 10 TC 46 Z9 46 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 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD APR PY 1995 VL 43 IS 4 BP 933 EP 937 DI 10.1109/22.375257 PN 2 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA QT617 UT WOS:A1995QT61700004 ER PT J AU IVERSON, SJ OFTEDAL, OT BOWEN, WD BONESS, DJ SAMPUGNA, J AF IVERSON, SJ OFTEDAL, OT BOWEN, WD BONESS, DJ SAMPUGNA, J TI PRENATAL AND POSTNATAL TRANSFER OF FATTY-ACIDS FROM MOTHER TO PUP IN THE HOODED SEAL SO JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMIC AND ENVIRONMENTAL PHYSIOLOGY LA English DT Article DE PLACENTAL TRANSFER; LACTATION; FATTY ACIDS; ADIPOSE TISSUE; HOODED SEAL; CYSTOPHORA ID CYSTOPHORA-CRISTATA; ADIPOSE-TISSUE; POSITIONAL SPECIFICITY; PARENTAL INVESTMENT; ENERGY-TRANSFER; ELEPHANT SEAL; MASS-TRANSFER; BIRTH; MILK; METABOLISM AB Unlike most mammals, hooded seal (Cystophora cristata) pups are born with a substantial layer of adipose tissue. Subsequently, during the brief lactation period of only 4 days, fasting mothers mobilize enormous amounts of lipid from blubber and secrete milk (60% fat) at rates of 10 kg . day(-1). Pups gain 7 kg . day(-1) due primarily to the deposition of fat in blubber. We measured blubber content and fatty acid composition of blubber and milk in hooded seal mother-pup pairs at birth and over the 4-day lactation period to examine the nature and source of fetal lipids, the incorporation of maternal blubber fatty acids into milk lipid, and patterns of fatty acid deposition in suckling young. The fatty acid composition of the blubber of the newborn was notably different from that of its mother. Fetal deposition was likely due to a combination of both fetal synthesis and direct placental transfer of maternal circulating fatty acids. The blubber of the newborn was characterized by high levels (>90% of total fatty acids) of saturated and monounsaturated fatty acids of primarily endogenous origin. In particular, the fetus appeared to have high Delta-9 desaturase activity as evidenced by the large amounts of 14:1n-5 (4.2%) and 16:1n-7 (37.0%) in newborn blubber compared to maternal blubber (0.2% and 14.1%, respectively). Nevertheless, essential and long-chain polyunsaturated fatty acids of the n-3 and n-6 families, which could only have originated by direct transfer from the mother, comprised >7% of pup blubber fatty acids and indicated greater rates of placental transfer than found in humans. In hooded seal mothers, rapid lipid transfer during the brief lactation period appeared to be facilitated by direct incorporation of mobilized fatty acids into milk. Although some differences in proportions of specific fatty acids were found between milk and maternal blubber, most of these differences declined over the course of lactation. However, selective mobilization of 20:5n-3 from maternal blubber into milk was apparent throughout lactation and resulted in elevated levels in pup blubber at weaning compared to maternal blubber. Ingested fatty acids were deposited directly and without modification into the blubber of pups, and by 4 days the fatty acid composition of pup blubber was virtually identical to that of the milk consumed. C1 SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES,WASHINGTON,DC 20008. UNIV MARYLAND,DEPT CHEM & BIOCHEM,COLLEGE PK,MD 20742. FISHERIES & OCEANS CANADA,BEDFORD INST OCEANOG,DIV MARINE FISH,DARTMOUTH,NS B2Y 4A2,CANADA. TECH UNIV NOVA SCOTIA,CANADIAN INST FISHERIES TECHNOL,HALIFAX,NS B3J 2X4,CANADA. RI Bowen, William/D-2758-2012 NR 75 TC 76 Z9 76 U1 0 U2 14 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0174-1578 J9 J COMP PHYSIOL B JI J. Comp. Physiol. B-Biochem. Syst. Environ. Physiol. PD APR PY 1995 VL 165 IS 1 BP 1 EP 12 DI 10.1007/BF00264680 PG 12 WC Physiology; Zoology SC Physiology; Zoology GA QX909 UT WOS:A1995QX90900001 PM 7601954 ER PT J AU DUDLEY, R AF DUDLEY, R TI EXTRAORDINARY FLIGHT PERFORMANCE OF ORCHID BEES (APIDAE, EUGLOSSINI) HOVERING IN HELIOX (80-PERCENT HE/20-PERCENT O-2) SO JOURNAL OF EXPERIMENTAL BIOLOGY LA English DT Article DE AERODYNAMICS; FLIGHT; HOVERING; MUSCLE; POWER; BEE; EULAEMA MERIANA; EUGLOSSA IMPERIALIS; EUGLOSSA DISSIMULA ID INSECT FLIGHT; POWER REQUIREMENTS; AERODYNAMICS; MUSCLE; OUTPUT; LIFT; BUMBLEBEES AB Limits to insect flight performance are difficult to evaluate because the full range of aerodynamic capabilities cannot be easily elicited or controlled. Invasive experimental manipulations, such as tethering and weight addition, may adversely affect the biomechanics of the flight system as a whole. Because air density is a major determinant of aerodynamic force production, gas mixtures of variable density can be used to investigate insect flight performance non-invasively, Three species of orchid bee hovering in heliox (80% He/20% O-2) exhibited dramatic increases in lift and power output relative to flight in normal air. Stroke amplitude increased significantly in heliox, while wingbeat frequency was unchanged; the Reynolds numbers of the wings decreased on average by 41%. Although lift performance of airfoils generally degrades at lower Reynolds numbers, mean lift coefficients in heliox increased significantly relative to values for hovering in normal air. Mean muscle mass-specific power output for flight in heliox mixtures ranged from 1.30 to 160 W kg(-1), substantially exceeding values determined from isolated asynchronous muscle preparations as well as limits postulated from the results of load-lifting experiments. The use of variable-density gas mixtures to examine animal flight performance is a simple yet powerful manipulation that will permit a new evaluation of both insect and vertebrate flight mechanics. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RP DUDLEY, R (reprint author), UNIV TEXAS,DEPT ZOOL,AUSTIN,TX 78712, USA. NR 36 TC 68 Z9 69 U1 0 U2 9 PU COMPANY OF BIOLOGISTS LTD PI CAMBRIDGE PA BIDDER BUILDING CAMBRIDGE COMMERCIAL PARK COWLEY RD, CAMBRIDGE, CAMBS, ENGLAND CB4 4DL SN 0022-0949 J9 J EXP BIOL JI J. Exp. Biol. PD APR PY 1995 VL 198 IS 4 BP 1065 EP 1070 PG 6 WC Biology SC Life Sciences & Biomedicine - Other Topics GA QQ614 UT WOS:A1995QQ61400021 ER PT J AU JETT, JA AF JETT, JA TI RECENT LITERATURE ON FORAMINIFERA SO JOURNAL OF FORAMINIFERAL RESEARCH LA English DT Bibliography RP JETT, JA (reprint author), SMITHSONIAN INST,DEPT PALEOBIOL,NMNH,MRC 121,WASHINGTON,DC 20560, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CUSHMAN FOUNDATION FORAMINIFERAL RES PI CAMBRIDGE PA MUSEUM COMPARATIVE ZOOLOGY, DEPT INVERTEBRATE PALEONTOLOGY 26 OXFORD ST, HARVARD UNIV, CAMBRIDGE, MA 02138 SN 0096-1191 J9 J FORAMIN RES JI J. Foraminifer. Res. PD APR PY 1995 VL 25 IS 2 BP 180 EP 185 PG 6 WC Paleontology SC Paleontology GA QY354 UT WOS:A1995QY35400006 ER PT J AU VOSS, FS AF VOSS, FS TI ARMED WITH CAMERAS - THE AMERICAN MILITARY PHOTOGRAPHERS OF WORLD-WAR-II - MASLOWSKI,P SO JOURNAL OF MILITARY HISTORY LA English DT Book Review RP VOSS, FS (reprint author), SMITHSONIAN INST,NATL PORTRAIT GALLERY,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU VIRGINIA MILITARY INST PI LEXINGTON PA LEXINGTON, VA 24450 SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD APR PY 1995 VL 59 IS 2 BP 356 EP 357 DI 10.2307/2944602 PG 2 WC History SC History GA QW764 UT WOS:A1995QW76400032 ER PT J AU KALFATOVIC, MR AF KALFATOVIC, MR TI KLIM,GUSTAV - PAINTER OF WOMEN - PARTSCH,S SO LIBRARY JOURNAL LA English DT Book Review RP KALFATOVIC, MR (reprint author), SMITHSONIAN INST LIBS,WASHINGTON,DC, 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 1 PY 1995 VL 120 IS 6 BP 92 EP 92 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QP949 UT WOS:A1995QP94900056 ER PT J AU GROSHOLZ, ED RUIZ, GM AF GROSHOLZ, ED RUIZ, GM TI SPREAD AND POTENTIAL IMPACT OF THE RECENTLY INTRODUCED EUROPEAN GREEN CRAB, CARCINUS-MAENAS, IN CENTRAL CALIFORNIA SO MARINE BIOLOGY LA English DT Article ID CLAM POTAMOCORBULA-AMURENSIS; FRANCISCO BAY CALIFORNIA; SAN-FRANCISCO; WADDEN SEA; BIOLOGICAL INVASIONS; REMARKABLE INVASION; CERASTODERMA-EDULE; FEEDING BIVALVES; PREDATION; RECRUITMENT AB Our study examines the potential impact of the European green crab Carcinus maenas on communities of coastal embayments of western North America. We document the current distribution and range expansion of this species beyond San Francisco Bay, where C. maenas first became established along this coast in 1989-1990, and we test the effect of C. maenas predation on different species and sizes of infaunal invertebrates in field and laboratory experiments. In our samples from eight coastal locations in central California collected between June 1993 and May 1994, we found no green crabs at the two closest embayments south of San Francisco Bay and found the crabs in all four embayments sampled within 120 km north of San Francisco Bay, up to and including Bodega Harbor. C. maenas was not present in samples from sites farther north. This northward range expansion is apparently the result of larval recruitment by a single cohort, corresponding to the predominant northern transport of surface waters and the approximate distance water moves during larval green crab development. At Bodega Harbor, the current northern range limit, the C. maenas population is now well established lished and reproducing. Females and males became sexually mature within their first year at similar or equal to 40 mm carapace width, molting approximately monthly from summer through fall, and females were ovigerous in late fall of their first year at similar or equal to 50 mm. We expect larvae from this population to recruit locally and to the north, promoting episodic range extensions as new populations are established and b reproduce. Enclosure experiments conducted during the summer of 1993 at the intertidal sandflats of Bodega Harbor showed that C. maenas significantly reduced densities of the most abundant taxa, including the bivalves Transennella confusa and T. tantilla, the cumacean Cumella vulgaris, and the amphipod Corophium sp. Furthermore, Carcinus maenas selectively removed larger (>3 mm) rather than smaller (<1 mm) Transennella spp. in both field and laboratory experiments. Based on the available data from this and other studies of green crabs, and our 10 yr study of community dynamics at Bodega Harbor, we predict C. maenas will significantly alter community structure, ecological interactions, and evolutionary processes in embayments of western North America. C1 SMITHSONIAN ENVIRONM RES CTR,EDGEWATER,MD 21037. RP GROSHOLZ, ED (reprint author), UNIV CALIF DAVIS,CTR POPULAT BIOL,2320 STORER HALL,DAVIS,CA 95616, USA. OI Ruiz, Gregory/0000-0003-2499-441X NR 66 TC 132 Z9 142 U1 1 U2 44 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0025-3162 J9 MAR BIOL JI Mar. Biol. PD APR PY 1995 VL 122 IS 2 BP 239 EP 247 PG 9 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA QX953 UT WOS:A1995QX95300008 ER PT J AU DINNYES, A WALLACE, GA RALL, WF AF DINNYES, A WALLACE, GA RALL, WF TI EFFECT OF GENOTYPE ON THE EFFICIENCY OF MOUSE EMBRYO CRYOPRESERVATION BY VITRIFICATION OR SLOW FREEZING METHODS SO MOLECULAR REPRODUCTION AND DEVELOPMENT LA English DT Article DE EMBRYO BANKING; VITRIFICATION; GENOTYPE EFFECTS; INBRED STRAINS ID OVULATION RATE; OVARIAN SENSITIVITY; HIGH SURVIVAL; LITTER SIZE; MICE; FROZEN; VIABILITY; GLYCEROL; DONOR AB We examined possible genotype effects on the survival of 8- to 16-cell mouse embryos isolated from four inbred strains (C57BL/6N, BALB/cAnN, DBA/2N, and C3H/HeN), a outbred stock (ICR), and Various crosses after cryopreservation by vitrification or conventional slow freezing using glycerol solutions. The rates of in vitro development of C57BL/6N, BALB/cAnN, C3H/HeN, and ICR embryos to expanded blastocysts ranged from 86% to 94% after slow freezing and 85% to 97% after vitrification. The cryopreservation method did not significantly influence in vitro embryo survival after thawing (P > 0.05). Although genotype significantly influenced the in vitro survival of embryos (P = 0.008), this presumably resulted from an increased difficulty in assessing the quality grade of C3H/HeN embryos prior to cryopreservation. The rates in vivo development of C57BL/6N, BALB/cAnN, C3H/HeN, DBA/2N, and ICR embryos to normal day 18-19 fetuses ranged from 19% to 64% after slow freezing and from 18% to 63% after vitrification. The in vivo development of cryopreserved embryos was significantly influenced by cryopreservation method and genotype (P = 0.01 and P = 0.001, respectively). Vitrification yielded significantly higher rates of in vivo development than that after slow freezing (P > 0.05). In vivo development rates of DBA/2N and ICR9 female X B6D2F1 male embryos after cryopreservation were significantly higher than that of embryos from BALB/cAnN and C3H/HeN mice (P < 0.05). These results indicate that parental genotype exerts little or no effect on the ability of embryos to develop in vitro after vitrification or slow freezing. Differences in the ability of cryopreserved embryos to develop normally in vivo may reflect inherent genotype related differences in their post-implantation developmental potential and not their sensitivity to cryoinjury (C) 1995 Wiley-Liss, Inc.* C1 SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008. RP DINNYES, A (reprint author), AGR BIOTECHNOL CTR,POB 411,H-2101 GODOLLO,HUNGARY. FU NIA NIH HHS [AG1010164-01] NR 50 TC 42 Z9 46 U1 0 U2 2 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1040-452X J9 MOL REPROD DEV JI Mol. Reprod. Dev. PD APR PY 1995 VL 40 IS 4 BP 429 EP 435 DI 10.1002/mrd.1080400406 PG 7 WC Biochemistry & Molecular Biology; Cell Biology; Developmental Biology; Reproductive Biology SC Biochemistry & Molecular Biology; Cell Biology; Developmental Biology; Reproductive Biology GA QQ271 UT WOS:A1995QQ27100005 PM 7598908 ER PT J AU RAPPAPORT, S PODSIADLOWSKI, P JOSS, PC DISTEFANO, R HAN, Z AF RAPPAPORT, S PODSIADLOWSKI, P JOSS, PC DISTEFANO, R HAN, Z TI THE RELATION BETWEEN WHITE-DWARF MASS AND ORBITAL PERIOD IN WIDE BINARY RADIO PULSARS SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE BINARIES, GENERAL; STARS, EVOLUTION; STARS, NEUTRON; PULSARS, GENERAL; WHITE DWARFS ID X-RAY BINARIES; GLOBULAR-CLUSTERS; STELLAR EVOLUTION; 6.1-MS PULSAR; SYSTEMS; GIANTS; STARS; COMPONENT; ORIGIN; BRIGHT AB We have re-examined a scenario for the evolution of a binary system, initially comprising a neutron star and a low-mass giant and ending as a wide binary containing a radio pulsar and a white dwarf in a nearly circular orbit. The evolution is driven by the nuclear evolution of the giant, which results in the stable transfer of much or all of the envelope of the giant to the neutron star. The angular momentum associated with the transferred mass may spin the neutron star up to high rotation rates, yielding a 'recycled' pulsar; the white dwarf, which had been the core of the giant progenitor, remains as a fossil relic of the giant. This scenario provides a unique test of the theory of advanced stages of stellar evolution, in that it predicts the existence of a testable relationship between observable quantites: the mass, M(wd), of the white dwarf and the orbital period, P-orb, of the binary. The relationship arises because (1) stellar evolution theory predicts the existence of a rather tight relationship between the core mass, M(c), of a giant and the radius, R(g), of its envelope; and (2)in the scenario under consideration, the giant envelope is expected to fill its Roche lobe until the termination of mass transfer. The final orbital separation should thus be a well-defined function of R(g) at the end of the mass-transfer phase (i.e. at the time when the envelope of the giant is exhausted), while M(wd) will be essentially identical to the final value of M(c) at the termination of mass transfer. Using refined stellar evolution calculations, we have redetermined the most likely value of R(g) as a function of M(c) for core masses in the range 0.15 < M(c) < 1.15 M., and we have devised analytic fitting formulae to our results for both the R(g)-M(c) relation and the concomitant P-orb-M(wd) relation. We have also, for the first time, obtained a quantitative estimate of the spread in the value of R(g) at each value of M(c), resulting both from variations in the initial chemical composition and main-sequence mass of the giant and from the theoretical uncertainty in the value of the convective mixing-length parameter. We find that the maximum spread about the median Value of R(g) at any given value of M(c) is a factor of similar to 1.8, and that the corresponding maximum spread in P-orb at fixed M(wd) is a factor of similar to 2.4; smaller spreads are obtained if one or more of the parameters (e.g. the initial composition of the giant) are assumed to be known. We have compared our results against the observational parameters of 23 radio pulsars in wide, nearly circular, binary orbits with low-mass white dwarf companions. We have also examined the applicability of our results (appropriately modified for non-negligible orbital eccentricity) to two conventional wide-binary systems (Sirius and Procyon) containing more massive white dwarf companions. We find overall good agreement between our theoretical results and the available observational data; however, any comparison between theory and observation is limited by the generally large uncertainties in the masses of the white dwarfs in the binary pulsar systems and by the paucity of known systems containing more massive white dwarfs. C1 MIT, CTR SPACE RES, CAMBRIDGE, MA 02139 USA. UNIV CAMBRIDGE, INST ASTRON, CAMBRIDGE CB3 0HA, ENGLAND. HARVARD UNIV, SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP RAPPAPORT, S (reprint author), MIT, DEPT PHYS, CAMBRIDGE, MA 02139 USA. RI Han, Zhanwen/A-9741-2009 NR 65 TC 133 Z9 133 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD APR 1 PY 1995 VL 273 IS 3 BP 731 EP 741 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP724 UT WOS:A1995QP72400025 ER PT J AU HARRIS, DE WILLIS, AG DEWDNEY, PE BATTY, J AF HARRIS, DE WILLIS, AG DEWDNEY, PE BATTY, J TI CONSTRAINTS ON THE AVERAGE MAGNETIC-FIELD STRENGTH IN A RELIC RADIO GALAXY DERIVED FROM LIMITS ON INVERSE COMPTON X-RAYS SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE MAGNETIC FIELDS; RADIATION MECHANISMS, NONTHERMAL; GALAXIES, INDIVIDUAL, 0917 + 75; GALAXIES, MAGNETIC FIELDS; RADIO CONTINUUM, GALAXIES; X-RAYS, GALAXIES AB We have observed the relic radio galaxy, 0917 + 75, for 15 ks with the Position Sensitive Proportional Counter (PSPC) of the ROSAT X-ray satellite. Although the source was not detected, our upper limit for the X-ray flux enables us to estimate a lower limit to the average magnetic field strength in the source of approximate to 1 mu G (0.1. nT). If the minimum energy condition holds for relativistic particles and magnetic field, and if the inferred power law of relativistic electrons extends a factor of 3 below the energy responsible for the observed 20-MHz emission, then we demonstrate that the energy density in relativistic electrons which produces the observed radio emission must be augmented with a substantial contribution from lower energy electrons or relativistic protons. C1 DRAO,PENTICTON,BC V2A 6K3,CANADA. HAVERFORD COLL,HAVERFORD,PA 19041. RP HARRIS, DE (reprint author), HARVARD UNIV,SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 6 TC 9 Z9 9 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD APR 1 PY 1995 VL 273 IS 3 BP 785 EP 789 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QP724 UT WOS:A1995QP72400030 ER PT J AU CUTLER, AH AF CUTLER, AH TI TAPHONOMIC IMPLICATIONS OF SHELL SURFACE TEXTURES IN BAHIA-LA-CHOYA, NORTHERN GULF OF CALIFORNIA SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article ID CARBONATE; DISSOLUTION; INFESTATION AB The author collected shell samples of the bivalve Chione from the extensive tidal flat system of Bahia la Choya, northern Gulf of California, and examined their surfaces under the binocular and scanning electron microscopes. Samples were collected from environments ranging in degree of tidal exposure, energy level, and substrate: inner tidal flats, sandy outer fiats, rocky outer flats, tidal channel, estero channel, salt marsh, beach, spit, and subtidal. Surfaces were compared with those of shells experimentally subjected to bioerosion, dissolution, and abrasion. In all, more than 1100 shells were examined and described. Bioerosion by microborers is by far the dominant process attacking shell material in Bahia la Choya. Microbored textures dominated shell surfaces from all sedimentary environments, with the exception of the beach, where abrasion dominated. Chemical dissolution is important only in the fine-grained salt marsh and inner Bat environments. Many shells show composite textures, which reflect the concurrent action of more than one taphonomic agent. Shells from the salt marsh, for example, frequently show the effects of both microboring and dissolution. Overprinted textures can document transport among environments. RP CUTLER, AH (reprint author), SMITHSONIAN INST,DEPT PALEOBIOL,NHB MRC-121,WASHINGTON,DC 20560, USA. NR 39 TC 34 Z9 35 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD APR PY 1995 VL 114 IS 2-4 BP 219 EP 240 DI 10.1016/0031-0182(94)00078-M PG 22 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA QX976 UT WOS:A1995QX97600004 ER PT J AU BABB, JF DALGARNO, A AF BABB, JF DALGARNO, A TI RADIATIVE ASSOCIATION AND INVERSE PREDISSOCIATION OF OXYGEN-ATOMS SO PHYSICAL REVIEW A LA English DT Article ID SCHUMANN-RUNGE BANDS; MOLECULAR-OXYGEN; O-2; ABSORPTION; CONTINUUM; REGION; O2 RP BABB, JF (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Babb, James/0000-0002-3883-9501 NR 35 TC 30 Z9 30 U1 0 U2 8 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 APR PY 1995 VL 51 IS 4 BP 3021 EP 3026 DI 10.1103/PhysRevA.51.3021 PG 6 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QT401 UT WOS:A1995QT40100051 ER PT J AU JAMIESON, MJ DRAKE, GWF DALGARNO, A AF JAMIESON, MJ DRAKE, GWF DALGARNO, A TI RETARDED DIPOLE-DIPOLE DISPERSION INTERACTION POTENTIAL FOR HELIUM SO PHYSICAL REVIEW A LA English DT Note ID PHOTOASSOCIATION; COLLISIONS; LOSSES; ATOMS; DIMER; TRAP C1 UNIV WINDSOR,DEPT PHYS,WINDSOR,ON N9B 3P4,CANADA. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP JAMIESON, MJ (reprint author), UNIV GLASGOW,DEPT COMP SCI,GLASGOW G12 8QQ,LANARK,SCOTLAND. NR 20 TC 43 Z9 43 U1 0 U2 1 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 APR PY 1995 VL 51 IS 4 BP 3358 EP 3361 DI 10.1103/PhysRevA.51.3358 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QT401 UT WOS:A1995QT40100093 ER PT J AU ACHENBACH, H LOTTES, M WAIBEL, R KARIKAS, GA CORREA, MD GUPTA, MP AF ACHENBACH, H LOTTES, M WAIBEL, R KARIKAS, GA CORREA, MD GUPTA, MP TI CONSTITUENTS OF TROPICAL MEDICINAL-PLANTS .66. ALKALOIDS AND OTHER COMPOUNDS FROM PSYCHOTRIA-CORREAE SO PHYTOCHEMISTRY LA English DT Article DE PSYCHOTRIA CORREAE ( = CEPHAELIS CORREAE); RUBIACEAE; ISODOLICHANTOSIDE; CORREANTOSIDE; 10-HYDROXYCORREANTOSIDE; CORREANTINES A-C; 20-EPI-CORREANTINE B; CLETHRIC ACID; ROTUNGENIC ACID; C-13-NORISOPRENOIDS; CEREBROSIDES ID TETRAGONIA-TETRAGONOIDES; ANTIULCEROGENIC ACTIVITY; ABSOLUTE-CONFIGURATION; SPHINGOLIPIDS; CEREBROSIDES; SPHINGOSINE; SPECTRA; FRUITS AB From extracts of the leaves and/or the roots of Psychotria correae, isodolichantoside and the new alkaloids correantoside, 10-hydroxycorreantoside, correantines A to C, and 20-epi-correantine B were isolated, in addition to two cerebrosides and some isoprenoids. Structures were established by spectroscopic studies in combination with chemical interconversions and partial synthesis. C1 UNIV PANAMA, COLL PHARM, STUDY PANAMANIAN FLORA RES CTR, PANAMA CITY, PANAMA. SMITHSONIAN TROP RES INST, PANAMA CITY, PANAMA. UNIV PANAMA HERBARIUM, PANAMA CITY, PANAMA. RP ACHENBACH, H (reprint author), UNIV ERLANGEN NURNBERG, DEPT PHARMACEUT CHEM, INST PHARM & FOOD CHEM, D-91052 ERLANGEN, GERMANY. NR 30 TC 45 Z9 48 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0031-9422 J9 PHYTOCHEMISTRY JI Phytochemistry PD APR PY 1995 VL 38 IS 6 BP 1537 EP 1545 DI 10.1016/0031-9422(94)00823-C PG 9 WC Biochemistry & Molecular Biology; Plant Sciences SC Biochemistry & Molecular Biology; Plant Sciences GA QZ341 UT WOS:A1995QZ34100039 ER PT J AU WAGNER, AP AF WAGNER, AP TI THE GRAVER, THE BRUSH, AND THE RULING MACHINE - THE TRAINING OF LATE-19TH-CENTURY WOOD-ENGRAVERS SO PROCEEDINGS OF THE AMERICAN ANTIQUARIAN SOCIETY LA English DT Article RP WAGNER, AP (reprint author), SMITHSONIAN INST,NATL PORTRAIT GALLERY,WASHINGTON,DC 20560, USA. NR 54 TC 0 Z9 0 U1 0 U2 1 PU AMER ANTIQUARIAN SOC PI WORCESTER PA 185 SALISBURY ST, WORCESTER, MA 01609 SN 0044-751X J9 P AM ANTIQUARIAN SOC JI Proc. Amer. Antiq. Soc. PD APR PY 1995 VL 105 BP 167 EP 191 PN 1 PG 25 WC History SC History GA UJ273 UT WOS:A1995UJ27300015 ER PT J AU FORMAN, P AF FORMAN, P TI SWORDS INTO PLOWSHARES - BREAKING NEW GROUND WITH RADAR HARDWARE AND TECHNIQUE IN PHYSICAL RESEARCH AFTER WORLD-WAR-II SO REVIEWS OF MODERN PHYSICS LA English DT Review ID UNITED-STATES; NATIONAL-SECURITY; SCIENCE; OXFORD; ORIGIN; NMR C1 NYU,DEPT PHYS,NEW YORK,NY 10003. RP FORMAN, P (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 511 TC 7 Z9 9 U1 1 U2 5 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0034-6861 J9 REV MOD PHYS JI Rev. Mod. Phys. PD APR PY 1995 VL 67 IS 2 BP 397 EP 455 DI 10.1103/RevModPhys.67.397 PG 59 WC Physics, Multidisciplinary SC Physics GA RB092 UT WOS:A1995RB09200003 ER PT J AU KOHL, JL GARDNER, LD STRACHAN, L FISHER, R GUHATHAKURTA, M AF KOHL, JL GARDNER, LD STRACHAN, L FISHER, R GUHATHAKURTA, M TI SPARTAN-201 CORONAL SPECTROSCOPY DURING THE POLAR PASSES OF ULYSSES SO SPACE SCIENCE REVIEWS LA English DT Review DE SOLAR WIND; UV SPECTROSCOPY ID SOLAR-WIND; IONS; ACCELERATION; TEMPERATURE AB Spartan 201 is a shuttle deployed spacecraft that is scheduled to perform ultraviolet spectroscopy and white light polarimetry of the extended solar corona during two 40 hour missions to occur in September 1994 and August 1995. The spectroscopy is done with an ultraviolet coronal spectrometer which measures the intensity and spectral line profile of HI Ly alpha up to heliocentric heights of 3.5 solar radii. It also measures the intensities of the OVI doublet at 1032 and 1037 Angstrom and of Fe XII at 1242 Angstrom. The HI Ly alpha line profile measurements are used to determine the random velocity distribution of coronal protons along the line-of-sight. The absolute HI Ly alpha intensities can be used together with electron densities from the white light coronagraph to estimate electron temperatures from hydrogen ionization balance calculations, and bulk outflow velocities from models of Doppler dimmed resonant scattering. Intensities of minor ion lines are used to determine coronal abundances and outflow velocities of O5+. Ultraviolet spectroscopy of extended coronal regions from the 11 April 1993 mission of Spartan 201 are discussed. C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. RP HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. NR 15 TC 28 Z9 28 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-6308 EI 1572-9672 J9 SPACE SCI REV JI Space Sci. Rev. PD APR PY 1995 VL 72 IS 1-2 BP 29 EP 38 DI 10.1007/BF00768750 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU893 UT WOS:A1995QU89300006 ER PT J AU HABBAL, SR ESSER, R AF HABBAL, SR ESSER, R TI ON THE DERIVATION OF EMPIRICAL LIMITS ON THE HELIUM ABUNDANCE IN CORONAL HOLES BELOW 1.5-RS SO SPACE SCIENCE REVIEWS LA English DT Review DE HELIUM ABUNDANCE; SOLAR WIND ID SOLAR-WIND; EXPANSION; MODEL; IONS AB We present a simple technique describing how limits on the helium abundance, alpha, the ratio of helium to proton number density, can be inferred from measurements of the electron density, temperature and their gradients below 1.5 R(S). As an illustration, we apply this technique to emission line intensities in the extreme ultraviolet, measured in polar coronal holes. The example indicates that alpha can be significantly large in the inner corona. This technique could be applicable to the more extensive data to be obtained from coordinated ground and space-based observations during the Ulysses south polar passage and the Spartan flight, and subsequently during the SOHO mission. Limits on the helium abundance in the solar wind can thus be derived from its source region and compared to interplanetary values. RP HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0038-6308 EI 1572-9672 J9 SPACE SCI REV JI Space Sci. Rev. PD APR PY 1995 VL 72 IS 1-2 BP 39 EP 44 DI 10.1007/BF00768751 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QU893 UT WOS:A1995QU89300007 ER PT J AU LUBAR, S AF LUBAR, S TI REPRESENTATION AND POWER SO TECHNOLOGY AND CULTURE LA English DT Article; Proceedings Paper CT Conference on Critical Problems and Research Frontiers in the History of Technology CY OCT 30-NOV 03, 1991 CL MADISON, WI SP Soc Hist Technol, Hist Sci Soc ID TECHNOLOGY; INDUSTRY; OBJECTS; DESIGN C1 UNIV PENN,DEPT HIST & SOCIOL SCI,PHILADELPHIA,PA 19104. RP LUBAR, S (reprint author), SMITHSONIAN INST,AMER MUSEUM NAT HIST,WASHINGTON,DC 20560, USA. NR 81 TC 9 Z9 9 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0040-165X J9 TECHNOL CULT JI Technol. Cult. PD APR PY 1995 VL 36 IS 2 SU S BP S54 EP S81 DI 10.2307/3106690 PG 28 WC History & Philosophy Of Science SC History & Philosophy of Science GA TE554 UT WOS:A1995TE55400005 ER PT J AU GREENBERG, R AF GREENBERG, R TI NOVELTY RESPONSES - THE BRIDGE BETWEEN PSYCHOLOGY, BEHAVIORAL ECOLOGY AND COMMUNITY ECOLOGY SO TRENDS IN ECOLOGY & EVOLUTION LA English DT Letter ID NEOPHOBIA; WARBLERS RP GREENBERG, R (reprint author), SMITHSONIAN INST,NATL ZOOL PK,SMITHSONIAN MIGRATORY BIRD CTR,WASHINGTON,DC 20008, USA. NR 8 TC 13 Z9 13 U1 3 U2 19 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0169-5347 J9 TRENDS ECOL EVOL JI Trends Ecol. Evol. PD APR PY 1995 VL 10 IS 4 BP 165 EP 166 DI 10.1016/S0169-5347(00)89030-8 PG 2 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA QM040 UT WOS:A1995QM04000013 PM 21236990 ER PT J AU DEVORKIN, D AF DEVORKIN, D TI THE MILKY-WAY GALAXY AND STATISTICAL COSMOLOGY, 1890-1924 - PAUL,ER SO SCIENCE LA English DT Book Review RP DEVORKIN, D (reprint author), SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD MAR 31 PY 1995 VL 267 IS 5206 BP 2012 EP 2013 DI 10.1126/science.267.5206.2012-a PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QQ068 UT WOS:A1995QQ06800052 PM 17770114 ER PT J AU ROWAN, R KNOWLTON, N AF ROWAN, R KNOWLTON, N TI INTRASPECIFIC DIVERSITY AND ECOLOGICAL ZONATION IN CORAL ALGAL SYMBIOSIS SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE ZOOXANTHELLAE; REEFS ID MONTASTREA-ANNULARIS; REEF CORALS; DINOFLAGELLATES ZOOXANTHELLAE; TEMPERATURE; GROWTH AB All reef-building corals are obligately associated with photosynthetic microalgal endosymbionts called zooxanthellae. Zooxanthella taxonomy has emphasized differences between species of hosts, but the possibility of ecologically significant zooxanthella diversity within hosts has been the subject of speculation for decades. Analysis of two dominant Caribbean corals showed that each associates with three taxa of zooxanthellae that exhibit zonation with depth-the primary environmental gradient for light-dependent marine organisms. Some colonies apparently host two taxa of symbionts in proportions that can vary across the colony. This common occurrence of polymorphic, habitat-specific symbioses challenges conventional understanding of the units of biodiversity but also illuminates many distinctive aspects of marine animal-algal associations. Habitat specificity provides ecological explanations for the previously documented poor concordance between host and symbiont phylogenies and the otherwise surprising lack of direct, maternal transmission of symbionts in many species of hosts. Polymorphic symbioses may underlie the conspicuous and enigmatic variability characteristic of responses to environmental stress (e.g., coral ''bleaching'') and contribute importantly to the phenomenon of photoadaptation. C1 AUSTRALIAN INST MARINE SCI,TOWNSVILLE,QLD 4810,AUSTRALIA. SMITHSONIAN TROP RES INST,BALBOA,PANAMA. NR 29 TC 341 Z9 351 U1 10 U2 82 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD MAR 28 PY 1995 VL 92 IS 7 BP 2850 EP 2853 DI 10.1073/pnas.92.7.2850 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QP889 UT WOS:A1995QP88900090 PM 7708736 ER PT J AU FORSYTHE, RD ZIMBELMAN, JR AF FORSYTHE, RD ZIMBELMAN, JR TI A CASE FOR ANCIENT EVAPORITE BASINS ON MARS SO JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS LA English DT Article ID GENERAL-CIRCULATION; MARTIAN ATMOSPHERE; GROUND ICE; WATER; SIMULATIONS; MORPHOLOGY; HIGHLANDS; EVOLUTION; EROSION; VALLEYS AB Observations indicate that a Martian analog to the Earth's salt pans and saline lakes of arid regions may have existed in crater-basins during Mars' early (Noachian) epoch. Terraced and channelized crater-basins point to pending of surface water as well as possible prolonged and evolving base levels. In addition, supportive (evaporite basin) analogs are offered for three other morphologic features of Martian crater-basins. An evaporite basin model for crater-basins on Mars has major implications for the mechanical, chemical, and even biological processes that potentially have operated in Mars' past, and represent a spectrum of potential mineral resources. C1 SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,CTR EARTH & PLANETARY STUDIES,WASHINGTON,DC 20560. RP FORSYTHE, RD (reprint author), UNIV N CAROLINA,DEPT GEOG & EARTH SCI,CHARLOTTE,NC 28223, USA. NR 60 TC 62 Z9 64 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-PLANET JI J. Geophys. Res.-Planets PD MAR 25 PY 1995 VL 100 IS E3 BP 5553 EP 5563 DI 10.1029/95JE00325 PG 11 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QN877 UT WOS:A1995QN87700025 ER PT J AU KORNICKER, LS CALDER, DR AF KORNICKER, LS CALDER, DR TI HYDROIDS COLONIZING THE CARAPACES OF THE OSTRACODE PHILOMEDES-BRENDA FROM THE BEAUFORT SEA, ARCTIC-OCEAN SO PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON LA English DT Article AB A hydroid in the superfamily Bougainvillioidea or Pandeoidea colonizing the carapaces of the mydocopid ostracode Philomedes brenda (Baird 1850) collected in the Beaufort Sea, Arctic Ocean, is described and illustrated. C1 ROYAL ONTARIO MUSEUM,DEPT INVERTEBRATE ZOOL,TORONTO,ON M5S 2C6,CANADA. RP KORNICKER, LS (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20060, USA. NR 6 TC 1 Z9 2 U1 0 U2 1 PU BIOL SOC WASHINGTON PI WASHINGTON PA NAT MUSEUM NAT HIST SMITHSONIAN INST, WASHINGTON, DC 20560 SN 0006-324X J9 P BIOL SOC WASH JI Proc. Biol. Soc. Wash. PD MAR 24 PY 1995 VL 108 IS 1 BP 125 EP 129 PG 5 WC Biology SC Life Sciences & Biomedicine - Other Topics GA QP767 UT WOS:A1995QP76700016 ER PT J AU DEVORKIN, DH AF DEVORKIN, DH TI STAIRWAY TO THE STARS - THE STORY OF THE WORLDS LARGEST OBSERVATORY - PARKER,B SO NATURE LA English DT Book Review RP DEVORKIN, DH (reprint author), SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD MAR 23 PY 1995 VL 374 IS 6520 BP 317 EP 318 DI 10.1038/374317a0 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QN630 UT WOS:A1995QN63000045 ER PT J AU DEVORKIN, DH AF DEVORKIN, DH TI THE PERFECT MACHINE - BUILDING THE PALOMAR TELESCOPE - FLORENCE,R SO NATURE LA English DT Book Review RP DEVORKIN, DH (reprint author), SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD MAR 23 PY 1995 VL 374 IS 6520 BP 317 EP 318 DI 10.1038/374317a0 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QN630 UT WOS:A1995QN63000044 ER PT J AU LESSIOS, HA AF LESSIOS, HA TI DIADEMA-ANTILLARUM 10 YEARS AFTER MASS MORTALITY - STILL RARE, DESPITE HELP FROM A COMPETITOR SO PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES LA English DT Article ID REEF ALGAL COMMUNITIES; SEA-URCHIN RECRUITMENT; CARIBBEAN CORAL REEFS; POPULATION-DYNAMICS; KELP FOREST; PHILIPPI; PANAMA; DIVERSITY; PATTERNS; METAMORPHOSIS AB The black sea urchin Diadema antillarum was until 1983 an important component of Caribbean coral reef communities, affecting the distribution and abundance of all major guilds of sedentary organisms. Between 1983 and 1984 this species suffered the most extensive and severe mass mortality ever recorded for a marine animal. Continuous monitoring in Panama shows that in the subsequent 10 years D. antillarum densities remained at < 3.5 % of their pre-mortality levels. Despite pre-1983 evidence that D. antillarum competed with other echinoids, there has been no competitive release by other sea urchin species. Reef-wide inclusions and exclusions of echinoids indicate that: (i) the low rate of Diadema recruitment does not result from absence of settlement cues for the larvae or from lack of protection by conspecific adults but from paucity of larvae in the water column; and (ii) Echinometra viridis - an echinoid previously shown to compete with adult Diadema - actually facilitates the latter's recruitment. The lack of recovery of D. antillarum despite its high fecundity, planktonic larvae and the assistance of E. viridis, demonstrates that unique disturbance events in the history of a species can have long-lasting effects on its abundance, independently of community-level processes. C1 SMITHSONIAN TROP RES INST, BALBOA, PANAMA. NR 45 TC 51 Z9 55 U1 1 U2 16 PU ROYAL SOC PI LONDON PA 6-9 CARLTON HOUSE TERRACE, LONDON SW1Y 5AG, ENGLAND SN 0962-8452 J9 P ROY SOC B-BIOL SCI JI Proc. R. Soc. B-Biol. Sci. PD MAR 22 PY 1995 VL 259 IS 1356 BP 331 EP 337 DI 10.1098/rspb.1995.0049 PG 7 WC Biology; Ecology; Evolutionary Biology SC Life Sciences & Biomedicine - Other Topics; Environmental Sciences & Ecology; Evolutionary Biology GA QQ532 UT WOS:A1995QQ53200015 ER PT J AU MYERS, PC GOODMAN, AA GUSTEN, R HEILES, C AF MYERS, PC GOODMAN, AA GUSTEN, R HEILES, C TI OBSERVATIONS OF MAGNETIC-FIELDS IN DIFFUSE CLOUDS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, CLOUDS; ISM, MAGNETIC FIELDS; MHD; RADIO LINES, ISM ID LATITUDE MOLECULAR CLOUDS; HIGH GALACTIC LATITUDES; 21 CENTIMETER LINE; INFRARED CIRRUS; STAR FORMATION; NONHOMOLOGOUS CONTRACTION; INTERCLOUD MEDIUM; DARK CLOUDS; DENSE CORES; EMISSION AB We report 32 statistically significant measurements of the line-of-sight component of the magnetic field strength, B-2, in four diffuse clouds, via the Zeeman effect in the 21 cm line of H I. The region near MBM 27-30 in the Ursa Major complex has B-z > 4 mu G throughout a filamentary region 15 pc long, with significant structure on scales as small as 1.6 pc. The greatest field strength measured in this cloud is 19 +/- 2 mu G, greater than in most diffuse clouds by a factor similar to 2. Comparison of measurements with different telescopes suggests that the field strength at the map peak may be significantly greater than 19 mu G On scales smaller than 1.6 pc. The magnetic and kinetic energy densities M and K in this cloud are comparable, within a factor 2 of 2 x 10(-11) ergs cm(-3) and greater than the gravitational energy density by a factor similar to 500. Among the four clouds surveyed, six positions where CO emission is a local maximum have essentially the same mean line-of-sight field strength, B-z approximate to 8 mu G, as do four positions where CO emission is too weak to be detected. The similarity of M and K in the diffuse clouds discussed here, as well as in denser, self-gravitating clouds, suggests strong coupling between magnetic fields and gas motions in some interstellar clouds, independent of their self-gravity. This coupling probably arises from ion-neutral collisions, which allow propagation of MHD waves. C1 MAX PLANCK INST RADIOASTRON, D-53121 BONN, GERMANY. UNIV CALIF BERKELEY, DEPT ASTRON, BERKELEY, CA 94720 USA. RP MYERS, PC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. RI Goodman, Alyssa/A-6007-2010 OI Goodman, Alyssa/0000-0003-1312-0477 NR 58 TC 41 Z9 41 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1995 VL 442 IS 1 BP 177 EP 185 DI 10.1086/175433 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700018 ER PT J AU MYERS, PC KHERSONSKY, VK AF MYERS, PC KHERSONSKY, VK TI ON MAGNETIC TURBULENCE IN INTERSTELLAR CLOUDS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, CLOUDS; ISM, MAGNETIC FIELDS; ISM, MOLECULES; MHD; TURBULENCE; WAVES ID ORION MOLECULAR CLOUD; STAR-FORMING REGION; DARK CLOUD; DENSE CORES; AMBIPOLAR DIFFUSION; GAS; DISSIPATION; IONIZATION; EVOLUTION; CHEMISTRY AB Observations of diffuse, dark, and giant molecular clouds and their cores are analyzed to determine properties of their turbulent motions. Estimates of characteristic cloud internal density, external extinction, and external radiation held intensity are used to deduce the electron fraction x(e) due to both photoionization and cosmic rays. This ionization fraction exceeds that due to cosmic rays alone, by factors,similar to 5 for dark cloud cores to similar to 4000 for giant molecular clouds with embedded OB stars. Estimates of characteristic cloud size, density, velocity dispersion, ionization fraction, and magnetic field strength then indicate that four diagnostic numbers exceed unity by a significant factor: the Reynolds number, the magnetic Reynolds number, the Hartmann number, and the ''wave coupling number,'' or ratio of cloud size to minimum hydromagnetic wavelength. These results indicate that virtually all observed interstellar clouds have strong coupling between the magnetic field and the neutral gas, through ion-neutral collisions, even if the field is weaker than its equipartition value. This coupling allows energetically significant magnetohydrodynamic (MHD) waves to propagate above cutoff, so that MHD waves, chaotic motions, and clumpy density structure are probably more pervasive in interstellar clouds than would be expected from cosmic-ray ionization alone. This strong coupling implies that the timescale for ambipolar diffusion is at least similar to 10(7) yr for low-mass cores, and is at least similar to 10(8) yr for the gas around cores. These timescales may be too long for all of the mass in a low-mass core to condense via ambipolar diffusion. The observed velocity dispersion is strongly correlated with the estimated electron fraction, according to the power law upsilon similar to x(e)p, with p approximate to 0.3. This trend, and those already known among velocity dispersion, size, and density, suggest that increasing extinction may influence the structure of cloud density and velocity dispersion by driving a cycle of decreasing ionization, decreasing MHD wave activity, decreasing velocity dispersion, and increasing density. C1 UNIV PITTSBURGH, DEPT PHYS & ASTRON, PITTSBURGH, PA 15260 USA. RP MYERS, PC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, MS 42, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 98 TC 65 Z9 65 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1995 VL 442 IS 1 BP 186 EP 196 DI 10.1086/175434 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700019 ER PT J AU WOLFCHASE, GA WALKER, CK LADA, CJ AF WOLFCHASE, GA WALKER, CK LADA, CJ TI THE RELATIONSHIP OF DENSE GAS TO STAR-FORMATION IN THE MONOCEROS OB1 DARK CLOUD SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, JETS AND OUTFLOWS; ISM, MOLECULES; MOLECULAR PROCESSES; RADIO LINES, ISM; STARS, FORMATION ID YOUNG STELLAR OBJECTS; MOLECULAR CLOUD; CORES; NGC-2264; COLLAPSE; OUTFLOWS AB We have conducted a CS survey of the 10 outflows and 30 IRAS sources identified by Margulis, Lada, & Snell (1988) and Margulis, Lada, and Young (1989), in the Mon OB1 dark cloud to study the relationship between outflows, young stellar objects, and dense cores in this cloud. We detected the CS J = 2 --> 1 transition in the vicinity of 20 of the 30 IRAS sources, six of which are associated with the six most massive outflows in this cloud. We did not detect CS emission toward the four remaining outflows; three of these outflows are not associated with IRAS sources. The brightest CS J = 2 --> 1 emission is concentrated in two spatially extended regions encompassing five of the 10 outflows and eight of the IRAS sources. Within the extended regions, CS line widths are similar to 30% broader near outflow lobes than on the line of sight toward IRAS sources. There is a strong correlation of CS antenna temperature with IRAS source luminosity and a weaker correlation of CS line width with IRAS source luminosity for IRAS sources associated with outflows in Mon OB1. There is no apparent correlation of either CS antenna temperature or line width with IRAS source luminosity for IRAS sources not associated with outflows (quiescent sources). We have detected the CS J = 5 --> 4 transition in the vicinity of four outflow sources in this cloud and around none of the quiescent IRAS sources. The CS J = 5 --> 4 emission is extended around the two most massive outflows in the cloud and has been mapped in these regions. CS J = 7 --> 6 emission has been detected and mapped about the brightest outflow source in this cloud (Alien's star; Alien 1972). The J = 7 --> 6 emission peaks at the position of the IRAS source. The morphology of the J = 7 --> 6 emission differs from that of the J = 5 --> 4 emission. C1 UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 33 TC 20 Z9 20 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 MAR 20 PY 1995 VL 442 IS 1 BP 197 EP 207 DI 10.1086/175435 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700020 ER PT J AU POPHAM, R NARAYAN, R AF POPHAM, R NARAYAN, R TI ACCRETION DISK BOUNDARY-LAYERS IN CATACLYSMIC VARIABLES .1. OPTICALLY THICK BOUNDARY-LAYERS SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; BINARIES, CLOSE; NOVAE, CATACLYSMIC VARIABLES; WHITE DWARFS; X-RAYS, STARS ID LOCAL SHEAR INSTABILITY; WEAKLY MAGNETIZED DISKS; X-RAY-EMISSION; NOVA VW-HYDRI; VISCOUS DISKS; EVOLUTION; DWARF; STAR; RADIATION; VISCOSITY AB We develop numerical models of accretion disks in cataclysmic variables (CVs), including and emphasizing the boundary layer region where the accretion disk meets the accreting white dwarf. We confine ourselves to solutions where the boundary layer region is vertically optically thick, and find that these solutions share several common features. The angular and radial velocities of the accreting material drop rapidly in a dynamical boundary layer, which has a radial width similar to 1%-3% of the white dwarf radius. The energy dissipated in this region diffuses through the inner part of the disk and is radiated from the disk surface in a thermal boundary layer, which has a radial width comparable to the disk thickness, similar to 5%-15% of the white dwarf radius. We examine the dependence of the boundary layer structure on the mass accretion rate, the white dwarf mass and rotation rate, and the viscosity parameter alpha. We delineate the boundary between optically thick and optically thin boundary layer solutions as a function of these parameters and suggest that by means of a careful comparison with observations it may be possible to estimate alpha in CVs. We derive an expression for the total boundary layer luminosity as a function of the parameters and show that it agrees well with the luminosities of our numerical solutions. Finally, we calculate simple blackbody continuum spectra of the boundary layer and disk emission for our solutions and compare these to soft X-ray, EUV, and He II emission-line observations of CVs. We show that, through such comparisons, it may be possible to determine the rotation rates of the accreting stars in CVs, and perhaps also the white dwarf masses and the accretion rates. The spectra are quite insensitive to alpha, so the uncertainty in this parameter does not affect such comparisons. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP POPHAM, R (reprint author), UNIV ILLINOIS,DEPT PHYS,1110 W GREEN ST,URBANA,IL 61801, USA. NR 42 TC 124 Z9 125 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 MAR 20 PY 1995 VL 442 IS 1 BP 337 EP 357 DI 10.1086/175444 PN 1 PG 21 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700029 ER PT J AU MCCLINTOCK, JE HORNE, K REMILLARD, RA AF MCCLINTOCK, JE HORNE, K REMILLARD, RA TI THE DIM IMMER ACCRETION DISK OF THE QUIESCENT BLACK-HOLE A0602-00 SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; BINARIES, CLOSE; BLACK HOLE PHYSICS; STARS, INDIVIDUAL (A0620-00); X-RAYS, STARS ID SOFT-X-RAY; BINARY A0620-00; CATACLYSMIC VARIABLES; NOVA A0620-00; SPECTRA; TRANSIENTS; EVOLUTION; MODEL; MASS; EXTINCTION AB We observed the X-ray nova A0620-00 with the Hubble Space Telescope (HST) Faint object Spectrograph 16 yr after its 1975 outburst. We present a single spectrum (1250-4750 Angstrom), which is approximately an average over a full 7.8 hr orbital cycle of the source. The continuum can be fitted approximately by a blackbody model with T = 9000 K and a small projected source area, which is similar to 1% of the expected area of the accretion disk. A0620-00 is faint in the far-UV band; its luminosity is comparable to the luminosity of a quiescent dwarf-nova accretion disk. (i.e., excluding the white dwarf). By analogy with dwarf novae, the optical luminosity of the disk (M(upsilon) approximate to 7) and the orbital period of A0620-00 imply that the rate of mass transfer onto the outer disk in M(d) similar to 10(-10) M. yr(-1). We also observed A0620-00 with the ROSAT PSPC X-ray detector for 3 x 10(4) s and detected a faint source (5 sigma) at the location of the X-ray nova. For an assumed blackbody spectrum the source temperature and luminosity are similar to 0.16 keV and 6 x 10(30) ergs s(-1), respectively (d = 1 kpc). This luminosity implies that the rate of mass transfer into the black hole is extraordinarily small: M(BH) < 5 x 10(-15) M. yr(-1). The much larger mass transfer rate onto the outer disk, and the UV/X-ray faintness of the inner disk confirm key predictions of the disk instability model for the nova outburst of A0620-00 published by Huang and Wheeler and by Mineshige and Wheeler. C1 STERREKUNDIG INST,3508 TA UTRECHT,NETHERLANDS. MIT,CTR SPACE RES,CAMBRIDGE,MA 02139. SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. RP MCCLINTOCK, JE (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 52 TC 97 Z9 98 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 20 PY 1995 VL 442 IS 1 BP 358 EP 365 DI 10.1086/175445 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700030 ER PT J AU SUTTON, EC PENG, R DANCHI, WC JAMINET, PA SANDELL, G RUSSELL, APG AF SUTTON, EC PENG, R DANCHI, WC JAMINET, PA SANDELL, G RUSSELL, APG TI THE DISTRIBUTION OF MOLECULES IN THE CORE OF OMC-1 SO ASTROPHYSICAL JOURNAL LA English DT Meeting Abstract C1 UNIV ILLINOIS,DEPT ASTRON,CHICAGO,IL 60680. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. JOINT ASTRON CTR,HILO,HI 96720. ROYAL OBSERV,EDINBURGH EH9 3HJ,MIDLOTHIAN,SCOTLAND. NR 0 TC 0 Z9 0 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 MAR 20 PY 1995 VL 442 IS 1 BP 454 EP 454 PN 1 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700045 ER PT J AU BRICKHOUSE, NS RAYMOND, JC SMITH, BW AF BRICKHOUSE, NS RAYMOND, JC SMITH, BW TI NEW MODEL OF IRON SPECTRA IN THE EXTREME-ULTRAVIOLET AND APPLICATION TO SERTS AND EUVE OBSERVATIONS - A SOLAR ACTIVE-REGION AND CAPELLA SO ASTROPHYSICAL JOURNAL LA English DT Meeting Abstract C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. NR 0 TC 0 Z9 0 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 MAR 20 PY 1995 VL 442 IS 1 BP 455 EP 455 PN 1 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM747 UT WOS:A1995QM74700047 ER PT J AU VANCURA, O GORENSTEIN, P HUGHES, JP AF VANCURA, O GORENSTEIN, P HUGHES, JP TI EVIDENCE FOR ELEMENTAL VARIATION IN THE EJECTA OF THE TYCHO-SUPERNOVA REMNANT SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (TYCHOS SUPERNOVA); SHOCK WAVES; SUPERNOVA REMNANTS; X-RAYS, ISM ID X-RAY-SPECTRUM; CARBON-DEFLAGRATION SUPERNOVA; WHITE-DWARF MODELS; NOVA REMNANT; CASSIOPEIA-A; I SUPERNOVAE; ABUNDANCES; EXPLOSIONS AB We present an X-ray study of the Tycho supernova remnant utilizing archival data from the high-resolution imagers (HRIs) on Einstein and ROSAT, the low-energy imaging telescopes (LEITs) on EXOSAT, and spectral data from the Broad Band X-ray Telescope (BBXRT). We have made use of the differing HRI bandpasses to construct images of Tycho in two spectral bands, 0.7-1.8 keV and 1.8-4.5 keV. We find that the two images differ, with the harder image showing enhanced emission along much of the south, west, and north periphery. There appears to be enhanced soft emission in the interior and in one particular knot of emission in the southeast. Besides continuum (which we model here as thermal bremsstrahlung emission), we believe the hard image shows primarily the distribution of high-ionization Si and S K-shell lines which lie in the 1.8-2.6 keV band, while the softer image has contributions from Si as well as Fe XVII to Fe XXIV L-shell lines in the 0.7-1.4 keV band. Guided by the results of nonequilibrium ionization modeling of the BBXRT spectral data, we interpret the observed contrast in hard and soft X-ray emission in terms of variations in abundance, ionization timescale, and temperature. The most likely explanation for the spectral differences are spatial variations of the relative abundances of Si, S, and Fe. RP VANCURA, O (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 38 TC 30 Z9 30 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 MAR 10 PY 1995 VL 441 IS 2 BP 680 EP 688 DI 10.1086/175391 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK140 UT WOS:A1995QK14000022 ER PT J AU JORDAN, H KENNEDYSTOSKOPF, S TOMPKINS, W HOWARD, J AF JORDAN, H KENNEDYSTOSKOPF, S TOMPKINS, W HOWARD, J TI TRANSMISSION OF FELINE IMMUNODEFICIENCY VIRUS (FIV) TO A FELINE CD4(+) T-CELL LINE VIA SEMEN SO FASEB JOURNAL LA English DT Meeting Abstract C1 N CAROLINA STATE UNIV,RALEIGH,NC 27606. SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008. NR 0 TC 0 Z9 0 U1 0 U2 2 PU FEDERATION AMER SOC EXP BIOL PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0892-6638 J9 FASEB J JI Faseb J. PD MAR 9 PY 1995 VL 9 IS 3 BP A211 EP A211 PN 1 PG 1 WC Biochemistry & Molecular Biology; Biology; Cell Biology SC Biochemistry & Molecular Biology; Life Sciences & Biomedicine - Other Topics; Cell Biology GA QL987 UT WOS:A1995QL98701253 ER PT J AU ORTON, G AHEARN, M BAINES, K DEMING, D DOWLING, T GOGUEN, J GRIFFITH, C HAMMEL, H HOFFMANN, W HUNTEN, D JEWITT, D KOSTIUK, T MILLER, S NOLL, K ZAHNLE, K ACHILLEOS, N DAYAL, A DEUTSCH, L ESPENAK, F ESTERLE, P FRIEDSON, J FAST, K HARRINGTON, J HORA, J JOSEPH, R KELLY, D KNACKE, R LACY, J LISSE, C RAYNER, J SPRAGUE, A SHURE, M WELLS, K YANAMANDRAFISHER, P ZIPOY, D BJORAKER, G BUHL, D GOLISCH, W GRIEP, D KAMINSKI, C ARDEN, C CHAIKIN, A GOLDSTEIN, J GILMORE, D FAZIO, G KANAMORI, T LAM, H LIVENGOOD, T MACLOW, MM MARLEY, M MOMARY, T ROBERTSON, D ROMANI, P SPITALE, J SYKES, M TENNYSON, J WELLNITZ, D YING, SW AF ORTON, G AHEARN, M BAINES, K DEMING, D DOWLING, T GOGUEN, J GRIFFITH, C HAMMEL, H HOFFMANN, W HUNTEN, D JEWITT, D KOSTIUK, T MILLER, S NOLL, K ZAHNLE, K ACHILLEOS, N DAYAL, A DEUTSCH, L ESPENAK, F ESTERLE, P FRIEDSON, J FAST, K HARRINGTON, J HORA, J JOSEPH, R KELLY, D KNACKE, R LACY, J LISSE, C RAYNER, J SPRAGUE, A SHURE, M WELLS, K YANAMANDRAFISHER, P ZIPOY, D BJORAKER, G BUHL, D GOLISCH, W GRIEP, D KAMINSKI, C ARDEN, C CHAIKIN, A GOLDSTEIN, J GILMORE, D FAZIO, G KANAMORI, T LAM, H LIVENGOOD, T MACLOW, MM MARLEY, M MOMARY, T ROBERTSON, D ROMANI, P SPITALE, J SYKES, M TENNYSON, J WELLNITZ, D YING, SW TI COLLISION OF COMET SHOEMAKER-LEVY-9 WITH JUPITER OBSERVED BY THE NASA INFRARED TELESCOPE FACILITY SO SCIENCE LA English DT Article ID ETHANE AB The National Aeronautics and Space Administration (NASA) Infrared Telescope Facility was used to investigate the collision of comet Shoemaker-Levy 9 with Jupiter from 12 July to 7 August 1994. Strong thermal infrared emission lasting several minutes was observed after the impacts of fragments C, G, and R. All impacts warmed the stratosphere and some the troposphere up to several degrees. The abundance of stratospheric ammonia increased by more than 50 times. Impact-related particles extended up to a level where the atmospheric pressure measured several millibars. The north polar near-infrared aurora brightened by nearly a factor of 5 a week after the impacts. C1 UNIV MARYLAND, DEPT ASTRON, COLLEGE PK, MD 20742 USA. NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. MIT, CAMBRIDGE, MA 02139 USA. NO ARIZONA UNIV, DEPT PHYS & ASTRON, FLAGSTAFF, AZ 86011 USA. UNIV ARIZONA, STEWARD OBSERV, TUCSON, AZ 85721 USA. UNIV ARIZONA, LUNAR & PLANETARY LAB, TUCSON, AZ 85721 USA. UNIV HAWAII, INST ASTRON, HONOLULU, HI 96822 USA. UCL, DEPT PHYS & ASTRON, LONDON WC1E 6BT, ENGLAND. SPACE TELESCOPE SCI INST, BALTIMORE, MD 21218 USA. NASA, AMES RES CTR, MOFFETT FIELD, CA 94053 USA. UNIV MASSACHUSETTS, FIVE COLL ASTRON DEPT, AMHERST, MA 01003 USA. UNIV TEXAS, DEPT ASTRON, AUSTIN, TX 78712 USA. PENN STATE UNIV, ERIE, PA 16563 USA. UNIV ST ANDREWS, DEPT PHYS, ST ANDREWS, FIFE, SCOTLAND. SMITHSONIAN INST, NATL AIR & SPACE MUSEUM, WASHINGTON, DC 20560 USA. SMITHSONIAN ASTROPHYS OBSERV, CAMBRIDGE, MA 02138 USA. STANFORD UNIV, DEPT MECH ENGN & DESIGN, STANFORD, CA 94305 USA. UNIV CHICAGO, DEPT ASTRON & ASTROPHYS, CHICAGO, IL 60637 USA. NEW MEXICO STATE UNIV, DEPT ASTRON, LAS CRUCES, NM 88003 USA. UNIV CALIF LOS ANGELES, LOS ANGELES, CA 90024 USA. UNIV LEICESTER, DEPT PHYS & ASTRON, LEICESTER LE1 7RH, LEICS, ENGLAND. CALTECH, PASADENA, CA 91126 USA. UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, LONDON SW7 2BZ, ENGLAND. RP ORTON, G (reprint author), CALTECH, JET PROP LAB, 4800 OAK GROVE DR, PASADENA, CA 91109 USA. RI Achilleos, Nicholas/C-1647-2008; Harrington, Joseph/E-6250-2011; Wellnitz, Dennis/B-4080-2012; Noll, Keith/C-8447-2012; Livengood, Timothy/C-8512-2012; Romani, Paul/D-2729-2012; Bjoraker, Gordon/D-5032-2012; Tennyson, Jonathan/I-2222-2012; Marley, Mark/I-4704-2013; Dowling, Timothy/J-4537-2013; Kostiuk, Theodor/A-3077-2014; Lisse, Carey/B-7772-2016 OI Hora, Joseph/0000-0002-5599-4650; Achilleos, Nicholas/0000-0002-5886-3509; Tennyson, Jonathan/0000-0002-4994-5238; Dowling, Timothy/0000-0002-7400-2274; Lisse, Carey/0000-0002-9548-1526 NR 28 TC 60 Z9 60 U1 0 U2 5 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD MAR 3 PY 1995 VL 267 IS 5202 BP 1277 EP 1282 DI 10.1126/science.7871423 PG 6 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QK068 UT WOS:A1995QK06800028 PM 7871423 ER PT J AU WEAVER, HA AHEARN, MF ARPIGNY, C BOICE, DC FELDMAN, PD LARSON, SM LAMY, P LEVY, DH MARSDEN, BG MEECH, KJ NOLL, KS SCOTTI, JV SEKANINA, Z SHOEMAKER, CS SHOEMAKER, EM SMITH, TE STERN, SA STORRS, AD TRAUGER, JT YEOMANS, DK ZELLNER, B AF WEAVER, HA AHEARN, MF ARPIGNY, C BOICE, DC FELDMAN, PD LARSON, SM LAMY, P LEVY, DH MARSDEN, BG MEECH, KJ NOLL, KS SCOTTI, JV SEKANINA, Z SHOEMAKER, CS SHOEMAKER, EM SMITH, TE STERN, SA STORRS, AD TRAUGER, JT YEOMANS, DK ZELLNER, B TI THE HUBBLE-SPACE-TELESCOPE (HST) OBSERVING CAMPAIGN ON COMET SHOEMAKER-LEVY-9 SO SCIENCE LA English DT Article AB The Hubble Space Telescope made systematic observations of the split comet P/Shoemaker-Levy 9 (SL9) (P designates a periodic comet) starting in July 1993 and continuing through mid-July 1994 when the fragments plunged into Jupiter's atmosphere. Deconvolutions of Wide Field Planetary Camera images indicate that the diameters of some fragments may have been as large as similar to 2 to 4 kilometers, assuming a geometric albedo of 4 percent, but significantly smaller values (that is, <1 kilometer) cannot be ruled out. Most of the fragments (or nuclei) were embedded in circularly symmetric inner comae from July 1993 until late June 1994, implying that there was continuous, but weak, cometary activity. At least a few nuclei fragmented into separate, condensed objects well after the breakup of the SL9 parent body, which argues against the hypothesis that the SL9 fragments were swarms of debris with no dominant, central bodies. Spectroscopic observations taken on 14 July 1994 showed an outburst in magnesium ion emission that was followed closely by a threefold increase in continuum emission, which may have been caused by the electrostatic charging and subsequent explosion of dust as the comet passed from interplanetary space into the jovian magnetosphere. No OH emission was detected, but the derived upper limit on the H2O production rate of similar to 10(27) molecules per second does not necessarily imply that the object was water-poor. C1 UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742. UNIV LIEGE,INST ASTROPHYS,B-4000 LIEGE,BELGIUM. SW RES INST,DIV 15,SAN ANTONIO,TX 78228. JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218. UNIV ARIZONA,LUNAR & PLANETARY LAB,TUCSON,AZ 85721. LAB ASTRON SPATIALE TRAVERSE SIPHON,F-13376 MARSEILLE 12,FRANCE. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV HAWAII,INST ASTRON,HONOLULU,HI 96822. JET PROPULS LAB,PASADENA,CA 91109. NO ARIZONA UNIV,DEPT PHYS & ASTRON,FLAGSTAFF,AZ 86011. US GEOL SURVEY,FLAGSTAFF,AZ 86001. SW RES INST,DIV 15,BOULDER EXTENS OFF,BOULDER,CO 80302. GEORGIA SO UNIV,DEPT PHYS,STATESBORO,GA 30460. RP WEAVER, HA (reprint author), SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218, USA. RI Noll, Keith/C-8447-2012; Weaver, Harold/D-9188-2016 NR 20 TC 69 Z9 69 U1 0 U2 4 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD MAR 3 PY 1995 VL 267 IS 5202 BP 1282 EP 1288 DI 10.1126/science.7871424 PG 7 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QK068 UT WOS:A1995QK06800029 PM 7871424 ER PT J AU KOCH, PL HEISINGER, J MOSS, C CARLSON, RW FOGEL, ML BEHRENSMEYER, AK AF KOCH, PL HEISINGER, J MOSS, C CARLSON, RW FOGEL, ML BEHRENSMEYER, AK TI ISOTOPIC TRACKING OF CHANGE IN DIET AND HABITAT USE IN AFRICAN ELEPHANTS SO SCIENCE LA English DT Article ID BONE-COLLAGEN; NATIONAL-PARK; STABLE CARBON; SOUTH-AFRICA; EAST-AFRICA; NITROGEN; KENYA; POPULATIONS; RATIOS; DISCRIMINATION AB The carbon, nitrogen, and strontium isotope compositions of elephants in Amboseli Park, Kenya, were measured to examine changes in diet and habitat use since the 1960s. Carbon isotope ratios, which reflect the photosynthetic pathway of food plants, record a shift in diet from trees and shrubs to grass. Strontium isotope ratios, which reflect the geologic age of bedrock, document the concentration of elephants within the park. The high isotopic variability produced by behavioral and ecological shifts, if it is representative of other East African elephant populations, may complicate the use of isotopes as indicators of the source region of ivory. C1 AFRICAN WILDLIFE FDN,NAIROBI,KENYA. CARNEGIE INST WASHINGTON,DEPT TERR MAGNETISM,WASHINGTON,DC 20015. CARNEGIE INST WASHINGTON,GEOPHYS LAB,WASHINGTON,DC 20015. SMITHSONIAN INST,DEPT PALEOBIOL,NATL MUSEUM NAT HIST,WASHINGTON,DC 20560. RP KOCH, PL (reprint author), PRINCETON UNIV,DEPT GEOL & GEOPHYS SCI,PRINCETON,NJ 08544, USA. OI Moss, Cynthia/0000-0001-6916-0000 NR 59 TC 139 Z9 142 U1 3 U2 39 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD MAR 3 PY 1995 VL 267 IS 5202 BP 1340 EP 1343 DI 10.1126/science.267.5202.1340 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QK068 UT WOS:A1995QK06800043 PM 17812610 ER PT J AU LITTLER, MM LITTLER, DS AF LITTLER, MM LITTLER, DS TI IMPACT OF CLOD PATHOGEN ON PACIFIC CORAL REEFS SO SCIENCE LA English DT Article ID ALGAL CRUSTS; PRODUCTIVITY; POROLITHON AB A bacterial pathogen of coralline algae was initially observed during June 1993 and now occurs in South Pacific reefs that span a geographic range of at least 6000 kilometers. The occurrence of the coralline algal pathogen at Great Astrolabe Reef sites (Fiji) increased from zero percent in 1992 to 100 percent in 1993, which indicates that the pathogen may be in an early stage of virulence and dispersal. Because of the important role played by coralline algae in reef building, this pathogen, designated coralline lethal orange disease (CLOD), has the potential to greatly influence coral reef ecology and reef-building processes. RP LITTLER, MM (reprint author), SMITHSONIAN INST,DEPT BOT,NATL MUSEUM NAT HIST,WASHINGTON,DC 20560, USA. NR 17 TC 85 Z9 88 U1 0 U2 6 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD MAR 3 PY 1995 VL 267 IS 5202 BP 1356 EP 1360 DI 10.1126/science.267.5202.1356 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QK068 UT WOS:A1995QK06800048 PM 17812612 ER PT J AU HELLER, EJ AF HELLER, EJ TI DYNAMICAL TUNNELING AND MOLECULAR-SPECTRA SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID INTRAMOLECULAR VIBRATIONAL-RELAXATION; QUANTUM ERGODICITY; FERMI RESONANCES; HIGH-RESOLUTION; ENERGY-LEVELS; CH; SPECTROSCOPY; MECHANICS; SYSTEMS; MOTION AB We show on very general grounds that for a sufficiently high density of states (typically greater than or equal to 100 per cm(-1)) but low enough energy (so that chaos does not play a role) most quantum eigenstates of moderate sized valence-bonded molecules are likely to be delocalized by tunneling interactions between would-be localized states. One implication of this is that energy is essentially never trapped in localized modes or bonds in polyatomic molecules above a threshold energy. Another implication is that spectroscopically prepared zero-order states, which typically possess some local quality, will bear the imprint of the tunneling and spawn narrow spectral clusters whose width is characteristic of the tunneling. C1 HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP HARVARD UNIV, DEPT CHEM, CAMBRIDGE, MA 02138 USA. NR 46 TC 74 Z9 74 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 USA SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD MAR 2 PY 1995 VL 99 IS 9 BP 2625 EP 2634 DI 10.1021/j100009a021 PG 10 WC Chemistry, Physical SC Chemistry GA QK487 UT WOS:A1995QK48700022 ER PT J AU RAVENHILL, PL AF RAVENHILL, PL TI AFRICAN ART IN TRANSIT - STEINER,CB SO AFRICAN ARTS LA English DT Book Review RP RAVENHILL, PL (reprint author), SMITHSONIAN INST,NATL MUSEUM AFRICAN ART,WASHINGTON,DC 20560, USA. NR 1 TC 1 Z9 1 U1 0 U2 0 PU UNIV CALIF PI LOS ANGELES PA AFRICAN STUDIES CNTR, LOS ANGELES, CA 90024 SN 0001-9933 J9 AFR ARTS JI Afr. Arts PD SPR PY 1995 VL 28 IS 2 BP 16 EP & DI 10.2307/3337220 PG 0 WC Art SC Art GA QV685 UT WOS:A1995QV68500004 ER PT J AU STAPLES, AJ KILGORE, C AF STAPLES, AJ KILGORE, C TI AN INTERVIEW WITH DR MONDO SO AMERICAN ANTHROPOLOGIST LA English DT Editorial Material RP STAPLES, AJ (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 10 TC 1 Z9 1 U1 0 U2 0 PU AMER ANTHROPOLOGICAL ASSOC PI ARLINGTON PA 4350 NORTH FAIRFAX DRIVE SUITE 640, ARLINGTON, VA 22203 SN 0002-7294 J9 AM ANTHROPOL JI Am. Anthropol. PD MAR PY 1995 VL 97 IS 1 BP 110 EP 125 DI 10.1525/aa.1995.97.1.02a00130 PG 16 WC Anthropology SC Anthropology GA QV691 UT WOS:A1995QV69100012 ER PT J AU HOMIAK, J AF HOMIAK, J TI ONE BLOOD - THE JAMAICAN BODY - SOBO,EJ SO AMERICAN ANTHROPOLOGIST LA English DT Book Review RP HOMIAK, J (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ANTHROPOLOGICAL ASSOC PI ARLINGTON PA 4350 NORTH FAIRFAX DRIVE SUITE 640, ARLINGTON, VA 22203 SN 0002-7294 J9 AM ANTHROPOL JI Am. Anthropol. PD MAR PY 1995 VL 97 IS 1 BP 138 EP 139 DI 10.1525/aa.1995.97.1.02a00200 PG 2 WC Anthropology SC Anthropology GA QV691 UT WOS:A1995QV69100023 ER PT J AU SCHERER, JC AF SCHERER, JC TI THE FLAG IN AMERICAN-INDIAN ART - HERBST,T, KOPP,J SO AMERICAN ANTHROPOLOGIST LA English DT Book Review RP SCHERER, JC (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ANTHROPOLOGICAL ASSOC PI ARLINGTON PA 4350 NORTH FAIRFAX DRIVE SUITE 640, ARLINGTON, VA 22203 SN 0002-7294 J9 AM ANTHROPOL JI Am. Anthropol. PD MAR PY 1995 VL 97 IS 1 BP 156 EP 157 DI 10.1525/aa.1995.97.1.02a00320 PG 2 WC Anthropology SC Anthropology GA QV691 UT WOS:A1995QV69100038 ER PT J AU SEEGER, A AF SEEGER, A TI THROUGH AMAZON EYES - THE HUMAN-ECOLOGY OF AMAZONIAN POPULATIONS - MORAN,EF SO AMERICAN ANTHROPOLOGIST LA English DT Book Review RP SEEGER, A (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ANTHROPOLOGICAL ASSOC PI ARLINGTON PA 4350 NORTH FAIRFAX DRIVE SUITE 640, ARLINGTON, VA 22203 SN 0002-7294 J9 AM ANTHROPOL JI Am. Anthropol. PD MAR PY 1995 VL 97 IS 1 BP 178 EP 179 DI 10.1525/aa.1995.97.1.02a00560 PG 2 WC Anthropology SC Anthropology GA QV691 UT WOS:A1995QV69100062 ER PT J AU SADLER, PM AF SADLER, PM TI AN ANCIENT TIME MACHINE - THE DIAL OF AHAZ SO AMERICAN JOURNAL OF PHYSICS LA English DT Article C1 HARVARD UNIV,GRAD SCH EDUC,CAMBRIDGE,MA 02138. RP SADLER, PM (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 9 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 0002-9505 J9 AM J PHYS JI Am. J. Phys. PD MAR PY 1995 VL 63 IS 3 BP 211 EP 216 DI 10.1119/1.17956 PG 6 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA QJ601 UT WOS:A1995QJ60100003 ER PT J AU MORGAN, SG CHRISTY, JH AF MORGAN, SG CHRISTY, JH TI ADAPTIVE SIGNIFICANCE OF THE TIMING OF LARVAL RELEASE BY CRABS SO AMERICAN NATURALIST LA English DT Article ID UCA-PUGILATOR; FIDDLER CRABS; REPRODUCTIVE SYNCHRONY; HATCHING RHYTHMS; NORTH-CAROLINA; MANGROVE CRABS; MARSH CREEKS; GENUS UCA; FISHES; CYCLES AB The adaptive significance of synchronous larval release by marine animals has been elusive. The hatching times of 10 species of intertidal crabs were determined and compared to those expected if crabs release larvae when predation on females, embryos, and newly hatched larvae is least. The safest time to release larvae occurs during the largest-amplitude nocturnal high tides of the lunar month. Crabs throughout the intertidal zone can release larvae near their refuges, and larvae will be transported rapidly at night from shorelines where diurnal planktivores abound. High and middle intertidal species released larvae at this time, which suggests that predation on all three life stages ultimately may synchronize reproduction. Unlike these species, low intertidal crabs are inundated every day, and therefore females could release larvae near refuges daily, Although one low intertidal species did release larvae every day and often during the daytime, two other species released larvae during the safe period. The timing of larval release by low intertidal crabs varies with the vulnerability of their larvae to planktivorous fishes. The hatching times of 46 species worldwide support our contention that predation, primarily on newly hatched larvae, and not other sources of mortality, selects for synchronous hatching by crabs. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. UNIT 0948,APO,AA 34002. NR 73 TC 143 Z9 149 U1 0 U2 16 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0003-0147 J9 AM NAT JI Am. Nat. PD MAR PY 1995 VL 145 IS 3 BP 457 EP 479 DI 10.1086/285749 PG 23 WC Ecology; Evolutionary Biology SC Environmental Sciences & Ecology; Evolutionary Biology GA QL573 UT WOS:A1995QL57300007 ER PT J AU WESCOAT, JL AF WESCOAT, JL TI WATERWORKS AND CULTURE IN METROPOLITAN LAHORE SO ASIAN ART & CULTURE LA English DT Article C1 UNIV ENGN & TECHNOL,LAHORE,PAKISTAN. SMITHSONIAN INST,ARTHUR M SACKLER GALLERY,WASHINGTON,DC 20560. RP WESCOAT, JL (reprint author), UNIV COLORADO,BOULDER,CO 80309, USA. NR 17 TC 0 Z9 0 U1 1 U2 2 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 1352-2744 J9 ASIAN ART CULT JI Asian Art Cult. PD SPR-SUM PY 1995 VL 8 IS 2 BP 20 EP 35 PG 16 WC Art SC Art GA RH827 UT WOS:A1995RH82700002 ER PT J AU ALLEE, SD AF ALLEE, SD TI THE QIANTANG TIDAL BORE SO ASIAN ART & CULTURE LA English DT Article C1 SMITHSONIAN INST,ARTHUR M SACKLER GALLERY,WASHINGTON,DC 20560. RP ALLEE, SD (reprint author), FREER GALLERY ART,WASHINGTON,DC 20560, USA. NR 18 TC 0 Z9 0 U1 0 U2 3 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 1352-2744 J9 ASIAN ART CULT JI Asian Art Cult. PD SPR-SUM PY 1995 VL 8 IS 2 BP 60 EP 73 PG 14 WC Art SC Art GA RH827 UT WOS:A1995RH82700005 ER PT J AU BEERS, TC KRIESSLER, JR BIRD, CM HUCHRA, JP AF BEERS, TC KRIESSLER, JR BIRD, CM HUCHRA, JP TI KINEMATICS AND DYNAMICS OF THE MKW/AWM POOR CLUSTERS SO ASTRONOMICAL JOURNAL LA English DT Article ID X-RAY-EMISSION; CD GALAXIES; ABELL CLUSTERS; VELOCITIES; REDSHIFTS; CATALOG; RICH; GAS C1 MICHIGAN STATE UNIV,DEPT PHYS & ASTRON,E LANSING,MI 48824. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE 02138,ENGLAND. SMITHSONIAN INST,MULTIPLE MIRROR TELESCOPE,WASHINGTON,DC. UNIV ARIZONA,MULTIPLE MIRROR TELESCOPE,TUCSON,AZ. CALTECH,PALOMAR 5M TELESCOPE,PASADENA,CA. CARNEGIE INST WASHINGTON,LAS CAMPANAS 2 5M TELESCOPE,WASHINGTON,DC. NR 50 TC 45 Z9 45 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAR PY 1995 VL 109 IS 3 BP 874 EP 919 DI 10.1086/117329 PG 46 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK478 UT WOS:A1995QK47800002 ER PT J AU STOCKE, JT WANG, QD PERLMAN, ES DONAHUE, ME SCHACHTER, JF AF STOCKE, JT WANG, QD PERLMAN, ES DONAHUE, ME SCHACHTER, JF TI DISCOVERY OF A CANDIDATE OLD, ISOLATED NEUTRON-STAR IN THE FIELD OF A GALACTIC CIRRUS CLOUD SO ASTRONOMICAL JOURNAL LA English DT Article ID MOLECULAR CLOUDS; OBSERVABILITY; GEMINGA; PULSAR; BINARY C1 SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP STOCKE, JT (reprint author), UNIV COLORADO,CTR ASTROPHYS & SPACE ASTRON,BOX 389,BOULDER,CO 80309, USA. RI Donahue, Megan/B-5361-2012; OI Perlman, Eric/0000-0002-3099-1664 NR 32 TC 37 Z9 38 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAR PY 1995 VL 109 IS 3 BP 1199 EP 1203 DI 10.1086/117352 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK478 UT WOS:A1995QK47800025 ER PT J AU MIKOLAJEWSKA, J KENYON, SJ MIKOLAJEWSKI, M GARCIA, MR POLIDAN, RS AF MIKOLAJEWSKA, J KENYON, SJ MIKOLAJEWSKI, M GARCIA, MR POLIDAN, RS TI EVOLUTION OF THE SYMBIOTIC BINARY-SYSTEM AG DRACONIS SO ASTRONOMICAL JOURNAL LA English DT Review ID ACCRETION DISK MODELS; MASS WHITE-DWARFS; X-RAY; IUE OBSERVATIONS; SPECTROSCOPIC ORBITS; INHOMOGENEOUS-MEDIUM; INFRARED PHOTOMETRY; SPECTRAL VARIATIONS; PLANETARY-NEBULAE; BOUNDARY-LAYERS C1 CNRS,INST ASTROPHYS,F-75014 PARIS,FRANCE. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NICHOLAS COPERNICUS UNIV,INST ASTRON,PL-87100 TORUN,POLAND. NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. RP MIKOLAJEWSKA, J (reprint author), NICOLAS COPERNICUS ASTRON CTR,BARTYCKA 18,PL-00716 WARSAW,POLAND. NR 124 TC 72 Z9 72 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAR PY 1995 VL 109 IS 3 BP 1289 EP 1307 DI 10.1086/117361 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK478 UT WOS:A1995QK47800034 ER PT J AU ROGERS, AEE DOELEMAN, SS MORAN, JM AF ROGERS, AEE DOELEMAN, SS MORAN, JM TI FRINGE DETECTION METHODS FOR VERY LONG-BASE-LINE ARRAYS SO ASTRONOMICAL JOURNAL LA English DT Article ID RADIO; VLBI; INTERFEROMETERS C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP ROGERS, AEE (reprint author), MIT,HAYSTACK OBSERV,WESTFORD,MA 01886, USA. NR 15 TC 42 Z9 43 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAR PY 1995 VL 109 IS 3 BP 1391 EP 1401 DI 10.1086/117371 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK478 UT WOS:A1995QK47800044 ER PT J AU SODERBLOM, DR FEDELE, SB JONES, BF STAUFFER, JR PROSSER, CF AF SODERBLOM, DR FEDELE, SB JONES, BF STAUFFER, JR PROSSER, CF TI EVOLUTION OF THE LITHIUM ABUNDANCES OF SOLAR-TYPE STARS .4. PRAESEPE (VOL 106, PG 1080, 1993) SO ASTRONOMICAL JOURNAL LA English DT Correction, Addition C1 UNIV CALIF SANTA CRUZ,UNIV CALIF OBSERV,LICK OBSERV,BOARD STUDIES ASTRON & ASTROPHYS,SANTA CRUZ,CA 95064. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP SODERBLOM, DR (reprint author), SPACE TELESCOPE SCI INST,3700 SAN MARTIN DR,BALTIMORE,MD 21218, USA. NR 4 TC 5 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD MAR PY 1995 VL 109 IS 3 BP 1402 EP 1403 DI 10.1086/117372 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QK478 UT WOS:A1995QK47800045 ER PT J AU MOROSSI, C FRANCHINI, M MALAGNINI, ML KURUCZ, RL AF MOROSSI, C FRANCHINI, M MALAGNINI, ML KURUCZ, RL TI SYNTHETIC DDO COLORS SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE STARS, FUNDAMENTAL PARAMETERS; STARS, LATE-TYPE TECHNIQUES, PHOTOMETRIC ID GIANT STARS; GLOBULAR-CLUSTERS; PHOTOMETRY; CATALOG; COLORS AB Calibrated synthetic DDO colours computed from Kurucz (1993) atmosphere models and fluxes are presented. The transformation equations to make synthetic colours consistent with the observational system are derived by using a set of calibration stars for which atmosphere parameters are known from high resolution spectroscopy. The synthetic C(45-48) versus C(42-45) diagram is compared with observational sequences of Population I giants and dwarfs and a good agree ment is obtained. The metallicity effect in the synthetic diagram is discussed. The obtained results lead to the conclusion that synthetic calibrated DDO colours are valuable tools for analysing Population I and II late-type stars and for computing integrated colours of globular clusters and galaxies. C1 UNIV TRIESTE, DIPARTIMENTO ASTRON, I-34131 TRIESTE, ITALY. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP MOROSSI, C (reprint author), OSSERV ASTRON TRIESTE, VIA GB TIEPOLO 11, I-34131 TRIESTE, ITALY. NR 33 TC 1 Z9 1 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD MAR PY 1995 VL 295 IS 2 BP 471 EP 478 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM277 UT WOS:A1995QM27700025 ER PT J AU KOCHANEK, CS KOO, DC AF KOCHANEK, CS KOO, DC TI GRAVITATIONAL LENS INVERSIONS OF CL 0024+1654 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, CLUSTERS, GENERAL; GRAVITATIONAL LENSING ID GIANT LUMINOUS ARCS; DISTANT CLUSTER; GALAXIES; IMAGES; SPECTROSCOPY; CL-2244-02; PHOTOMETRY; MODELS AB We present a series of models for the triple arc in Cl 0024 + 1654 based on reconstructions using lens models with a smooth cluster potential and two perturbing galaxies. The algorithm makes no assumptions about the structure of the source, and it uses an objective error measure. We produce very good inversions of the arc structure. The velocity dispersion of the cluster is not uniquely determined because of a parameter degeneracy between the core radius of the cluster and the asymptotic bending angle of the cluster. Typical solutions give cluster velocity dispersions of 1100-1400 km s-1 for source redshifts between z(s) = 2 and z(s) = 1, consistent with dynamical estimates for this system, and cluster core radii of 10''-20'' or (30-60)h-1 kpc. Acceptable models need the two perturbing galaxies near the middle arc segment, and we estimate that the two galaxies have critical radii of b(A) = 1''.3 and b(B) = 1''.1, respectively. Such critical radii are typical for L approximately L* galaxies if z(s) greater-than-or-similar-to 2. Elliptical models for the perturbing galaxies do not significantly reduce the residuals from the results for spherical galaxies. C1 UNIV CALIF SANTA CRUZ,BOARD STUDIES ASTRON & ASTROPHYS,SANTA CRUZ,CA 95064. UNIV CALIF SANTA CRUZ,LICK OBSERV,MT HAMILTON,CA 95140. RP KOCHANEK, CS (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Koo, David/0000-0003-3385-6799 NR 29 TC 27 Z9 27 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 MAR 1 PY 1995 VL 441 IS 1 BP 58 EP 69 DI 10.1086/175335 PN 1 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ099 UT WOS:A1995QJ09900006 ER PT J AU KIM, DW FABBIANO, G AF KIM, DW FABBIANO, G TI ROSAT-PSPC OBSERVATIONS OF THE EARLY-TYPE GALAXIES NGC-507 AND NGC-499 - CENTRAL COOLING AND MASS DETERMINATION SO ASTROPHYSICAL JOURNAL LA English DT Article DE COOLING FLOWS; GALAXIES, INDIVIDUAL (NGC-499, NGC-507); X-RAYS, GALAXIES ID NORMAL ELLIPTICAL GALAXIES; RAY EMITTING GAS; X-RAY; SPECTRAL PROPERTIES; DOMINANT GALAXIES; INTRACLUSTER GAS; STAR FORMATION; POOR CLUSTERS; FLOW MODELS; EMISSION AB We present the results of a deep observation of NGC 507 and NGC 499 with the ROSAT PSPC. The X-ray emission of NGC 507 is extended at least out to 1000'' (458 kpc at a distance of 94.5 Mpc). The radial profile of X-ray surface brightness goes as SIGMA(X) approximately r-1.8 outside the core region. The radial profile is a function of energy such that the softer X-rays have a smaller core radius and a flatter slope. Spectral analysis reveals that the emission temperature, with an average of 1 keV, peaks at an intermediate radius of 2-3' and falls toward the center (possibly decreases outward as well). The absorption column density is consistent with the Galactic line-of-sight value. The X-ray emission of NGC 499 is extended to 300'' and suggests a similarly cooler core. The cooler cores of NGC 507 and NGC 499 are strong evidence of the presence of cooling flows in these galaxies. Assuming hydrostatic equilibrium outside the cooling radius, the estimated mass-to-light ratio of NGC 507 is 97 +/- 16 within 458 kpc, indicative of the presence of a heavy halo. Similarly, the mass-to-light ratio of NGC 499 is 89 +/- 14 within 137 kpc. Near the edge of the X-ray-emitting region of NGC 507 we detect 19 soft, unresolved sources. These sources do not have optical counterparts and are significantly in excess of the expected number of background serendipitous sources. We speculate that they may represent cooling clumps in the halo of NGC 507. If there are many undetected cooling clumps distributed at large radii, then the radial profile of the X-ray surface brightness does not directly reflect the potential, adding uncertainty to the measurement of the binding mass; the gas mass could also be overestimated. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP KIM, DW (reprint author), CHUNGNAM NATL UNIV,TAEJON 305764,SOUTH KOREA. NR 67 TC 66 Z9 66 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 MAR 1 PY 1995 VL 441 IS 1 BP 182 EP 199 DI 10.1086/175348 PN 1 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ099 UT WOS:A1995QJ09900018 ER PT J AU CODE, AD WHITNEY, BA AF CODE, AD WHITNEY, BA TI POLARIZATION FROM SCATTERING IN BLOBS SO ASTROPHYSICAL JOURNAL LA English DT Article DE CIRCUMSTELLAR MATTER; POLARIZATION; RADIATIVE TRANSFER; SCATTERING ID YOUNG STELLAR OBJECTS; EMISSION-LINE STARS; CIRCUMSTELLAR ELECTRONS; MONTE-CARLO; THOMSON SCATTERING; ENVELOPES; LIGHT; OCCULTATION; DUST; GRAINS AB We describe a Monte Carlo method for calculating polorization due to scattering in various geometries. We apply the method in this paper to the case of scattering in a spherical cloud illuminated by parallel rays. The polarization is largest in small optical depth blobs, where single scattering dominates. The polarization decreases as optical depth increases until a limit is reached where scattering occurs on the surface, and increasing optical depth has little effect on the results. For a given optical depth, decreasing the albedo leads to an increase of the degree of polarization of the scattered light because single scattering increases relative to multiple scattering. As the optical depth of the blob increases, the scattered flux becomes increasingly backward throwing. In the high albedo blobs, the maximum polarization becomes skewed towards the illuminated hemisphere at high optical depths. We discuss the applications to polarization in supergaints and R CrB stars, and scattering in a clumpy interstellar medium. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP CODE, AD (reprint author), WASHBURN OBSERV,475 N CHARTER ST,MADISON,WI 53706, USA. NR 35 TC 70 Z9 70 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD MAR 1 PY 1995 VL 441 IS 1 BP 400 EP 407 DI 10.1086/175363 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ099 UT WOS:A1995QJ09900033 ER PT J AU GRAY, DF BALIUNAS, SL AF GRAY, DF BALIUNAS, SL TI MAGNETIC ACTIVITY VARIATIONS OF EPSILON-ERIDANI SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, ACTIVITY; STARS, INDIVIDUAL (EPSILON-ERIDANI); STARS, MAGNETIC FIELDS ID MAIN-SEQUENCE STARS; SOLAR-TYPE STARS; STELLAR ACTIVITY; K-DWARFS; FIELDS; LINE; CHROMOSPHERES; OSCILLATIONS; ROTATION; REGIONS AB The variations in magnetic activity, temperature, and granulation of epsilon Eri (HR 1084, HD 22049, K2 V, B-V = 0.88) in the interval from 1986 to 1992 are discussed in this paper. We monitored the magnetic activity with the Ca II H and K-line emission, the temperature with the ratio of depths of two spectral lines, and the granulation with spectral-line asymmetries. Rotational modulation is seen only in the H and K emission, and it shows a period of 11.10 +/- 0.03 days, in agreement with earlier published values. The star has one dominant activity longitude. The magnetic activity of epsilon Eri is strong and shows irregular excursions that may be superposed on a cyclic variation having a period almost-equal-to 5 yr. During the 1986-1992 interval the magnetic activity went through a broad relative minimum. Temperature and granulation changes mimic the variation in H and K emission, with excursions almost-equal-to 15 K and almost-equal-to 35 m s-1, respectively. No long-term photometric observations are available for epsilon Eri, but we calculate a 1.2% variation in luminosity and 0.014 mag in V to have occurred, assuming the radius of the star is constant. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP GRAY, DF (reprint author), UNIV WESTERN ONTARIO,DEPT ASTRON,LONDON,ON N6A 3K7,CANADA. NR 49 TC 43 Z9 43 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 MAR 1 PY 1995 VL 441 IS 1 BP 436 EP & DI 10.1086/175368 PN 1 PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ099 UT WOS:A1995QJ09900038 ER PT J AU ESKRIDGE, PB FABBIANO, G KIM, DW AF ESKRIDGE, PB FABBIANO, G KIM, DW TI A MULTIPARAMETRIC ANALYSIS OF THE EINSTEIN SAMPLE OF EARLY-TYPE GALAXIES .1. LUMINOSITY AND ISM PARAMETERS SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Review DE GALAXIES, ELLIPTIC AND LENTICULAR, CD; GALAXIES, GENERAL; GALAXIES, ISM; X-RAYS, GALAXIES ID NEUTRAL-HYDROGEN CONTENT; BRIGHT E/S0 GALAXIES; RADIO-CONTINUUM SOURCES; X-RAY-EMISSION; ELLIPTICAL GALAXIES; INTERSTELLAR MATTER; STAR-FORMATION; GALACTIC WINDS; STATISTICAL-ANALYSIS; INFRARED-EMISSION AB We have conducted bivariate and multivariate statistical analysis of data measuring the luminosity and interstellar medium of the Einstein sample of early-type galaxies (presented by Fabbiano, Kim, and Trinchieri 1992). We find a strong nonlinear correlation between L(B) and L(X), with a power-law slope of 1.8 +/- 0.1, steepening to 2.0 +/- 0.2 if we do not consider the Local Group dwarf galaxies M32 and NGC 205. Considering only galaxies with log L(X) less than or equal to 40.5, we instead find a slope of 1.0 +/- 0.2 (with or without the Local Group dwarfs). Although E and SO galaxies have consistent slopes for their L(B)-L(X) relationships, the mean values of the distribution functions of both L(X) and L(X)/L(B) for the SO galaxies are lower than those for the E galaxies at the 2.8 sigma and 3.5 sigma levels, respectively. We find clear evidence for a correlation between L(X) and the X-ray color C-21, defined by Kim, Fabbiano, and Trinchieri (1992b), which indicates that X-ray luminosity is correlated with the spectral shape below 1 keV in the sense that low-L(X) systems have relatively large contributions from a soft component compared with high-L(X) systems. We find evidence from our analysis of the 12 mu m IRAS data for our sample that our SO sample has excess 12 mu m emission compared with the E sample, scaled by their optical luminosities. This may be due to emission from dust heated in star-forming regions in SO disks. This interpretation is reinforced by the existence of a strong L(12)-L(100) correlation for our SO sample that is not found for the E galaxies, and by an analysis of optical-IR colors. We find steep slopes for power-law relationships between radio luminosity and optical, X-ray, and far-IR (FIR) properties. This last point argues that the presence of an FIR-emitting interstellar medium (ISM) in early-type galaxies is coupled to their ability to generate nonthermal radio continuum, as previously argued by, e.g., Walsh et al. (1989). We also find that, for a given L(100), galaxies with larger L(X)/L(B) tend to be stronger nonthermal radio sources, as originally suggested by Kim and Fabbiano (1990). We note that, while L(B) is most strongly correlated with L(6), the total radio luminosity, both L(X) and L(X)/L(B) are more strongly correlated with L(6co), the core radio luminosity. These points support the argument (proposed by Fabbiano, Gioia, and Trinchieri 1989) that radio cores in early-type galaxies are fueled by the hot ISM. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. CHUNGNAM NATL UNIV,DEPT ASTRON & SPACE SCI,TAEJON 305764,SOUTH KOREA. NR 133 TC 83 Z9 83 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD MAR PY 1995 VL 97 IS 1 BP 141 EP 184 DI 10.1086/192138 PG 44 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ436 UT WOS:A1995QJ43600006 ER PT J AU BACKWELL, PRY JENNIONS, MD CHRISTY, JH SCHOBER, U AF BACKWELL, PRY JENNIONS, MD CHRISTY, JH SCHOBER, U TI PILLAR BUILDING IN THE FIDDLER-CRAB UCA BEEBEI - EVIDENCE FOR A CONDITION DEPENDENT ORNAMENT SO BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY LA English DT Article DE FIDDLER CRABS; CONDITION DEPENDENCE; SEXUAL SELECTION; HANDICAP PRINCIPLE; SENSORY EXPLOITATION ID COSTLY MATE PREFERENCES; SEXUAL SELECTION; FEMALE CHOICE; HANDICAP PRINCIPLE; LONG TAILS; EVOLUTION; BIRDS; COURTSHIP; BEHAVIOR; PARADOX AB In the fiddler crab (Uca beebei) males build a small mud pillar next to their burrow which increases their attractiveness to females. Three hypotheses were tested to explain inter-male variation in pillar-building. (1) The benefits of pillar-building are density dependent. The experimental addition of vertical structures did not support this hypothesis as there was no change in the level of pillar-building. (2) There are two classes of males (pillar-builders and non-pillar-builders). This could either be due to an alternative mating strategy, or because pillar building is age or size-dependent. There was also no support for this hypothesis. (3) Pillar-building is an honest signal of male quality dependent on body condition. A food supplementation experiment was performed. Addition of food affected several aspects of male behaviour and resulted in a two fold increase in the number of pillars built between control and food treatments (P < 0.001). However, the percentage of males building pillars did not increase significantly. Pillar building in this species has been attributed to sensory exploitation. Our results indicate that a trait which may well have evolved through sensory exploitation also appears to be condition-dependent. We emphasise that showing that an ornament or behaviour is condition-dependent does not necessarily mean that it evolved through ''good gene'' processes. However, in terms of its current selective value, pillar building may be maintained through female choice because it acts as a signal of male condition. C1 UNIV OXFORD,DEPT ZOOL,OXFORD OX1 3PS,ENGLAND. SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RI Jennions, Michael/C-7560-2009; Backwell, Patricia/C-8883-2009 OI Jennions, Michael/0000-0001-9221-2788; NR 43 TC 49 Z9 50 U1 1 U2 10 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0340-5443 J9 BEHAV ECOL SOCIOBIOL JI Behav. Ecol. Sociobiol. PD MAR PY 1995 VL 36 IS 3 BP 185 EP 192 DI 10.1007/BF00177795 PG 8 WC Behavioral Sciences; Ecology; Zoology SC Behavioral Sciences; Environmental Sciences & Ecology; Zoology GA QT532 UT WOS:A1995QT53200006 ER PT J AU CARPENTER, KE COLLETTE, BB RUSSO, JL AF CARPENTER, KE COLLETTE, BB RUSSO, JL TI UNSTABLE AND STABLE CLASSIFICATIONS OF SCOMBROID FISHES SO BULLETIN OF MARINE SCIENCE LA English DT Article ID CONSENSUS; TREES; SYSTEMATICS; DEFINITIONS; MORPHOLOGY; SCOMBRIDAE; HYPOTHESIS; NECESSITY; PHYLOGENY; BIOLOGY AB Many cladists believe that a classification should strictly reflect a cladistic hypothesis. Consequently, they propose classifications that often differ markedly from existing ones and are potentially unstable due to phylogenetic uncertainty. This is problematic for economically or ecologically important organisms since changing classifications can cause confusion in their management as resources. The classification of the 44 genera of scombroid fishes (the mackerels, tunas, billfishes, and their relatives) illustrates this problem of instability. Previous cladistic analyses and analyses presented in this paper, using different data sets, result in many different cladistic hypotheses. In addition, the inferred cladograms are unstable because of different plausible interpretations of character coding. A slight change in coding of a single character, the presence of splint-like gill rakers, changes cladistic relationships substantially. These many alternative cladistic hypotheses for scombroids can be converted into various cladistic classifications, all of which are substantially different from the classification currently in use. In contrast, a quantitative evolutionary systematic method produces a classification that is unchanged despite variations in the cladistic hypothesis. The evolutionary classification has the advantage of being consistent with the classification currently in use, it summarizes anagenetic information, and it can be considered a new form of cladistic classification since a cladistic hypothesis can-be unequivocally retrieved from an annotated form of the classification. C1 SMITHSONIAN INST,NATL MARINE FISHERIES SERV,SYSTEMAT LAB,WASHINGTON,DC 20560. SMITHSONIAN INST,OFF INFORMAT RES RESOURCE MANAGEMENT,WASHINGTON,DC 20560. RP CARPENTER, KE (reprint author), UN,FAO,SPECIES IDENTIFICAT & DATA PROGRAMME,VIA TERME CARACALLA,I-00100 ROME,ITALY. NR 45 TC 34 Z9 34 U1 0 U2 6 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD MAR PY 1995 VL 56 IS 2 BP 379 EP 405 PG 27 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA QK207 UT WOS:A1995QK20700001 ER PT J AU LEAL, JH HARASEWYCH, MG AF LEAL, JH HARASEWYCH, MG TI MORPHOLOGY AND SYSTEMATICS OF THE ENIGMATIC VOLUTID PLICOLIVA-ZELINDAE (PETUCH, 1979) (MOLLUSCA, GASTROPODA) SO BULLETIN OF MARINE SCIENCE LA English DT Article AB The morphology of the living animal, anterior alimentary system and nervous system of Plicoliva zelindae is described. Presence of paired siphonal appendages, broad cephalic shield and lateral lappets, as well as a long connective between the supraesophageal and right pleural ganglia confirm the assignment of this taxon to the family Volutidae. The subfamily Plicolivinae, characterized by its multicuspid lateral teeth, distinctive sabot-like rachidian teeth, and a gland of Leiblein with greatly enlarged terminal bulb, shares some anatomical features with the volutid subfamilies Haliinae and Volutinae. With certain members of the former (e.g., Amoria) it shares a distinctive external pigmentation pattern and similar siphonal appendages and rachidian teeth. Comparisons of Plicolivinae with published data on various species of Volutinae reveal similar shell morphology and the presence of a gland of Leiblein with an enlarged terminal bulb in both subfamilies. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560. NR 23 TC 1 Z9 1 U1 0 U2 0 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD MAR PY 1995 VL 56 IS 2 BP 569 EP 577 PG 9 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA QK207 UT WOS:A1995QK20700013 ER PT J AU BAYER, FM AF BAYER, FM TI A NEW GENUS OF ALCYONACEAN CORAL (ANTHOZOA, OCTOCORALLIA) FROM CARIBBEAN WATERS SO BULLETIN OF MARINE SCIENCE LA English DT Article AB Rhizalcyon rhodora, a new genus and species of octocoral from the southern Caribbean is described and illustrated. The capitate colonial form superficially resembles Nidalia rubripunctata Verseveldt and Bayer (family Nidaliidae) but on the basis of its sclerites and unarmed polyps the genus is assigned to the family Alcyoniidae. RP BAYER, FM (reprint author), NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD MAR PY 1995 VL 56 IS 2 BP 620 EP 624 PG 5 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA QK207 UT WOS:A1995QK20700018 ER PT J AU BAYER, FM GRASSHOFF, M AF BAYER, FM GRASSHOFF, M TI 2 NEW SPECIES OF THE GORGONACEAN GENUS CTENOCELLA (COELENTERATA, ANTHOZOA, OCTOCORALLIA) FROM DEEP REEFS IN THE WESTERN ATLANTIC SO BULLETIN OF MARINE SCIENCE LA English DT Article AB Many new records of the ellisellid gorgonian originally described as Nicella schmitti Bayer, 1961, are reported and provide the basis for an amplified description of the species, which is transferred to the genus Ctenocella on the basis of its sclerites and to the subgenus Ellisella because of its growth form with comparatively long, straight branches. Two closely related new species, one white from Jamaica, the other bicolored from the Bahamas, are described and illustrated with photographs of colonies and scanning electron micrographs of sclerites. C1 FORSCHUNGSINST & NAT MUSEUM SENCKENBERG,D-60325 FRANKFURT,GERMANY. RP BAYER, FM (reprint author), NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560, USA. NR 31 TC 4 Z9 4 U1 0 U2 0 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD MAR PY 1995 VL 56 IS 2 BP 625 EP 652 PG 28 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA QK207 UT WOS:A1995QK20700019 ER PT J AU RALLS, K HATFIELD, BB SINIFF, DB AF RALLS, K HATFIELD, BB SINIFF, DB TI FORAGING PATTERNS OF CALIFORNIA SEA OTTERS AS INDICATED BY TELEMETRY SO CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE LA English DT Article ID TIME BUDGETS AB Foraging behavior was studied in 38 sea otters (Enhydra lutris) implanted with radio transmitters. The observed foraging behavior of instrumented individuals was similar to that of uninstrumented otters observed in previous studies: dive duration varied with prey type but not with prey size, dive success was highest for small prey, and the length of surface intervals increased with prey size. However, telemetry revealed that some otters foraged farther offshore and made longer dives than was indicated by visual observations. Individuals within age-sex classes varied in several aspects of foraging behavior, including the duration of dives and length of surface intervals. There were no overall differences between the dive durations or surface intervals during the day and during the night, though some individuals had longer dives or surface intervals during either the day or the night. There were differences in the foraging behavior of the various age-sex classes, the most striking being those between juvenile males and females. Juvenile males foraged much farther offshore (($) over bar x = 1280 m) in deeper water (($) over bar x = 30.1 m) than other otters and made long dives during both the day (($) over bar x = 104.4 s) and the night (($) over bar x = 122.7 s). Juvenile females fed for longer periods than other otters. C1 NATL BIOL SURVEY,SAN SIMEON,CA 93452. UNIV MINNESOTA,DEPT ECOL EVOLUT & BEHAV,ST PAUL,MN 55108. RP RALLS, K (reprint author), SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES,WASHINGTON,DC 20008, USA. NR 24 TC 20 Z9 20 U1 1 U2 12 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0008-4301 J9 CAN J ZOOL JI Can. J. Zool.-Rev. Can. Zool. PD MAR PY 1995 VL 73 IS 3 BP 523 EP 531 DI 10.1139/z95-060 PG 9 WC Zoology SC Zoology GA RE090 UT WOS:A1995RE09000015 ER PT J AU SMITH, RW AF SMITH, RW TI CRITICAL ASSEMBLY, A TECHNICAL HISTORY OF LOS-ALAMOS DURING THE OPPENHEIMER YEARS, 1943-1945 - HODDESON,L, HENRIKSEN,PW, MEADE,RA, WESTALL,C SO CANADIAN REVIEW OF AMERICAN STUDIES LA English DT Book Review RP SMITH, RW (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU CANADIAN REVIEW AMER STUDIES PI CALGARY PA C/O UNIV CALGARY PRESS, UNIV CALGARY 2500 UNIVERSITY DR NW, CALGARY AB T2N 1N4, CANADA SN 0007-7720 J9 CAN REV AM STUD JI Can. Rev. Am. Stud. PD SPR PY 1995 VL 25 IS 2 BP 134 EP 135 PG 2 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA TW042 UT WOS:A1995TW04200017 ER PT J AU FRIEDMAN, RS JAMIESON, MJ AF FRIEDMAN, RS JAMIESON, MJ TI SCATTERING BY A PAIR OF POTENTIAL-ENERGY BARRIERS - TESTS OF NUMERICAL SOFTWARE SO COMPUTER PHYSICS COMMUNICATIONS LA English DT Article ID TRANSITION-STATE THEORY; TUNNELING CALCULATIONS; REACTION-RATES; MODEL AB We present model problems for scattering in one dimension described by a pair of coupled differential equations with asymptotic boundary conditions at +/-infinity. We demonstrate how the scattering matrices can be constructed from the scattering matrices of previously-solved single potential barrier problems. The coupled differential equations of the model problems are useful in testing numerical software. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV GLASGOW,DEPT COMP SCI,GLASGOW G12 8QQ,LANARK,SCOTLAND. RP FRIEDMAN, RS (reprint author), INDIANA UNIV PURDUE UNIV,DEPT CHEM,FT WAYNE,IN 46805, USA. NR 16 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0010-4655 J9 COMPUT PHYS COMMUN JI Comput. Phys. Commun. PD MAR PY 1995 VL 85 IS 3 BP 382 EP 388 DI 10.1016/0010-4655(94)00148-U PG 7 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QL352 UT WOS:A1995QL35200004 ER PT J AU BEEHLER, BM BINO, R AF BEEHLER, BM BINO, R TI YELLOW-EYED STARLING APLONIS-MYSTACEA IN CENTRAL PROVINCE, PAPUA-NEW-GUINEA SO EMU LA English DT Note C1 UNIV PAPUA NEW GUINEA,DEPT BIOL,WAIGANI,PAPUA N GUINEA. RP BEEHLER, BM (reprint author), SMITHSONIAN INST,DIV BIRDS,CONSERVAT INT & WILDLIFE CONSERVAT SOC,WASHINGTON,DC 20560, USA. NR 12 TC 1 Z9 1 U1 0 U2 0 PU ROYAL AUSTRALASIAN ORNITHOL UN PI MOONEE PONDS PA 21 GLADSTONE ST, MOONEE PONDS VICTORIA 3039, AUSTRALIA SN 0158-4197 J9 EMU JI Emu PD MAR PY 1995 VL 95 BP 68 EP 70 PN 1 PG 3 WC Ornithology SC Zoology GA RL608 UT WOS:A1995RL60800009 ER PT J AU GARGAS, A TAYLOR, JW AF GARGAS, A TAYLOR, JW TI PHYLOGENY OF DISCOMYCETES AND EARLY RADIATIONS OF THE APOTHECIAL ASCOMYCOTINA INFERRED FROM SSU RDNA SEQUENCE DATA SO EXPERIMENTAL MYCOLOGY LA English DT Article DE FUNGI; ASCOMYCETES; DISCOMYCETES; LICHEN-FORMING; APOTHECIA; 18S RDNA; SSU RDNA; SMALL SUBUNIT RIBOSOMAL DNA; MOLECULAR EVOLUTION; PHYLOGENY ID POLYMERASE CHAIN-REACTION; CLADISTIC OUTLINE; RIBOSOMAL DNA; FUNGI AB We used nucleotide sequences of the small subunit ribosomal genes (SSU rDNA) to examine evolutionary relationships of apothecial ascomycetes (division Ascomycota; class Discomycetes sensu), commonly known as the cup fungi. The apothecial ascomycetes include both lichen-forming and free-living fungi. We sequenced the SSU rDNA from representatives of 10 fungal genera from four orders: Pezizales (Ascobolus lineolatus, Morchella elata agg., Peziza badia); Leotiales (Leotia lubrica, Sclerotinia sclerotiorum); Caliciales (Calicium tricolor, Mycocalicium albonigrum, Sphaerophorus globosus); and Lecanorales (Lecanova dispersa, Porpidia crustulata). Of these, C. tricolor, S. globosus, L. dispersa, and P. crustulata are lichen-forming fungi. Based on parsimony analyses of approximately 1750 aligned nucleotides of their SSU rDNA, we determined a most parsimonious tree (MPT). This hypothesis suggests that the apothecial ascomycetes are a paraphyletic assemblage, basal to other groups of filamentous ascomycetes including representatives of the perithecial fungi and cleistothecial fungi. The most parsimonious tree produced using this dataset supported the monophyly of the orders Pezizales, Leotiales, and Lecanorales. However, there was no support for monophyly of the representative Caliciales; S. globosus had affinities with members of the Lecanorales. This phylogenetic hypothesis recognizes Pezizales as basal and supports Nannfeldt's hypothesis (1932) of a primitive apothecial ascomata with subsequent evolution of perithecial and cleistothecial forms. This MPT provides a foundation for understanding evolution of the ascomycetous fungi. (C) 1995 Academic Press, Inc. C1 UNIV CALIF BERKELEY,DEPT PLANT BIOL,BERKELEY,CA 94720. RP GARGAS, A (reprint author), SMITHSONIAN INST,MUSEUM NATL HIST NAT,DEPT BOT,NHB-166,WASHINGTON,DC 20560, USA. FU NIAID NIH HHS [R01 AI 28545] NR 29 TC 77 Z9 82 U1 2 U2 6 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0147-5975 J9 EXP MYCOL JI Exp. Mycol. PD MAR PY 1995 VL 19 IS 1 BP 7 EP 15 DI 10.1006/emyc.1995.1002 PG 9 WC Plant Sciences; Mycology SC Plant Sciences; Mycology GA QN886 UT WOS:A1995QN88600002 PM 7614369 ER PT J AU WATTERS, TR JANES, DM AF WATTERS, TR JANES, DM TI CORONAE ON VENUS AND MARS - IMPLICATIONS FOR SIMILAR STRUCTURES ON EARTH SO GEOLOGY LA English DT Article ID ORIGIN; TECTONICS; EVOLUTION; FEATURES; MODELS AB Complex volcano-tectonic structures, referred to as coronae, had not been described until the exploration of the surface of Venus. These large, generally circular structures are characterized by an elevated surface, concentric and radial fracture systems, and extensive volcanism. Thought to be unique to Venus, rare circular features on Mars bear a close resemblance to coronae. The most prominent corona-like feature on Mars is Alba Patera, a broad, low-relief, plateau-shaped volcano-tectonic center surrounded by an annulus of concentric fractures similar to 600 km in diameter. A geophysical model for the formation of Venusian coronae involving uplift due to an ascending mantle diapir followed by gravitationally driven relaxation is applied to Mars. The results indicate that Alba Patera could have formed by such a mechanism. The formation of coronae and corona-like features on Venus and Mars from mantle diapirs suggests that similar structures may have formed in Earth's lithosphere. C1 CORNELL UNIV,CTR RADIOPHYS & SPACE RES,ITHACA,NY 14853. RP WATTERS, TR (reprint author), SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,CTR EARTH & PLANETARY STUDIES,WASHINGTON,DC 20560, USA. NR 32 TC 18 Z9 18 U1 1 U2 1 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0091-7613 J9 GEOLOGY JI Geology PD MAR PY 1995 VL 23 IS 3 BP 200 EP 204 DI 10.1130/0091-7613(1995)023<0200:COVAMI>2.3.CO;2 PG 5 WC Geology SC Geology GA QL296 UT WOS:A1995QL29600002 ER PT J AU MATHEWS, PM BUFFETT, BA SHAPIRO, II AF MATHEWS, PM BUFFETT, BA SHAPIRO, II TI LOVE NUMBERS FOR A ROTATING SPHEROIDAL EARTH - NEW DEFINITIONS AND NUMERICAL VALUES SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID INNER CORE DYNAMICS; FORCED NUTATIONS AB For an oceanless, elastic, spheroidal, rotating and nutating Earth, we present new definitions for the latitude-dependent Love numbers and gravimetric constant which are free of certain drawbacks of the definitions currently in use, and make the computation of quantities of observational interest simpler and more direct. Numerical values, computed for an Earth model characterised by ''modified PREM'' parameters, are also presented. This model is designed to have the value estimated from VLBI data for the eigenfrequency of the Nearly Diurnal Free Wobble (NDFW), and assures thus an accurate representation of the NDFW resonance in the Earth tides. To achieve current and future accuracy goals, the Love number values used must fully correspond to the definitions employed-a requirement not consistently met in some existing programs for analysis of space-geodetic data. RP HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 13 TC 36 Z9 37 U1 0 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 0094-8276 EI 1944-8007 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD MAR 1 PY 1995 VL 22 IS 5 BP 579 EP 582 DI 10.1029/95GL00161 PG 4 WC Geosciences, Multidisciplinary SC Geology GA QL415 UT WOS:A1995QL41500014 ER PT J AU GINGERICH, O AF GINGERICH, O TI COPERNICUS AND THE COPERNICAN QUESTION AT THE ARIOSTEA PUBLIC-LIBRARY - ITALIAN - PEPE,L SO ISIS LA English DT Book Review RP GINGERICH, O (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138, 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 0021-1753 J9 ISIS JI Isis PD MAR PY 1995 VL 86 IS 1 BP 106 EP 107 DI 10.1086/357107 PG 2 WC History & Philosophy Of Science SC History & Philosophy of Science GA QX269 UT WOS:A1995QX26900035 ER PT J AU DOEL, RE AF DOEL, RE TI RACE TO THE MOON - AMERICA DUEL WITH THE SOVIETS - BREUER,WB SO ISIS LA English DT Book Review RP DOEL, RE (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, 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 0021-1753 J9 ISIS JI Isis PD MAR PY 1995 VL 86 IS 1 BP 141 EP 143 DI 10.1086/357143 PG 3 WC History & Philosophy Of Science SC History & Philosophy of Science GA QX269 UT WOS:A1995QX26900076 ER PT J AU Lornell, K AF Lornell, K TI The 'Keystoners' + Levitt,D SO JOURNAL OF AMERICAN FOLKLORE LA English DT TV Review, Radio Review, Video RP Lornell, K (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ANTHROPOLOGICAL ASSOC PI ARLINGTON PA 4350 NORTH FAIRFAX DRIVE SUITE 640, ARLINGTON, VA 22203 SN 0021-8715 J9 J AM FOLKLORE JI J. Am. Folk. PD SPR PY 1995 VL 108 IS 428 BP 205 EP 206 DI 10.2307/541382 PG 2 WC Folklore SC Arts & Humanities - Other Topics GA VY658 UT WOS:A1995VY65800008 ER PT J AU BAYMAN, JM AF BAYMAN, JM TI RETHINKING REDISTRIBUTION IN THE ARCHAEOLOGICAL RECORD - OBSIDIAN EXCHANGE AT THE MARANA PLATFORM MOUND SO JOURNAL OF ANTHROPOLOGICAL RESEARCH LA English DT Article AB Economic concepts of redistribution and reciprocity (e.g., Service 1962; Sahlins 1972; Earle 1977) often Play important roles in models of exchange, even though prehistorians are Poorly equipped to discriminate between these processes in the archaeological record. Spatial analyses and geochemical characterization (X-ray fluorescence) of obsidian from the Classic period (A.D. 1100-1300) Hohokam multi-site community of Marana in the American Southwest reveal patterns that do not match idealized archaeological expectations of redistribution. These data support an interpretation of restricted obsidian consumption at communal ceremonial gatherings that centered on the platform mound. However households in the platform mound settlement (the largest site in the community) had roughly equivalent amounts of obsidian, whereas households in settlements away from the mound had highly limited access. This unexpected pattern indicates that normative models of exchange are inadequate for characterizing prehistoric economy in prestate societies like the Hohokam. RP BAYMAN, JM (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,WASHINGTON,DC 20560, USA. NR 78 TC 25 Z9 25 U1 0 U2 0 PU JOURNAL OF ANTHROPOLOGICAL RES PI ALBUQUERQUE PA UNIV NEW MEXICO, ANTHROPOLOGY DEPT, ALBUQUERQUE, NM 87111 SN 0091-7710 J9 J ANTHROPOL RES JI J. Anthropol. Res. PD SPR PY 1995 VL 51 IS 1 BP 37 EP 63 PG 27 WC Anthropology SC Anthropology GA QZ518 UT WOS:A1995QZ51800004 ER PT J AU EVERSHED, RP TURNERWALKER, G HEDGES, REM TUROSS, N LEYDEN, A AF EVERSHED, RP TURNERWALKER, G HEDGES, REM TUROSS, N LEYDEN, A TI PRELIMINARY-RESULTS FOR THE ANALYSIS OF LIPIDS IN ANCIENT BONE SO JOURNAL OF ARCHAEOLOGICAL SCIENCE LA English DT Article; Proceedings Paper CT Workshop on Bone Diagenesis CY JUL, 1993 CL OXFORD, ENGLAND DE BONE; HUMAN; ANIMAL; LIPIDS; GAS CHROMATOGRAPHY; GC; GAS CHROMATOGRAPHY MASS SPECTROMETRY; GC MS; CHOLESTEROL; DIAGENESIS; SOIL; PALAEODIETARY INDICATOR; BACTERIAL LIPIDS; HOPANOIDS ID CHROMATOGRAPHY MASS-SPECTROMETRY; GAS-CHROMATOGRAPHY; ORGANIC RESIDUES; ARCHAEOLOGY; SAMPLES; ORIGIN AB Lipid extracts were prepared for a number of samples of modern and ancient bones of humans and other animals (pig, cow, horse and whale). Aliquots of the total lipid extracts were trimethylsilylated and analysed directly by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) without prior fractionation or purification. The analysis of archaeological bones and samples of adhering soil showed that contamination of the bone by migration of lipids from the burial environment was not a serious problem. Analyses of modern reference materials showed the lipid extracts of bone possessing adhering marrow fat to be dominated by acyl lipids, e.g. triacylglycerols and free fatty acids. In contrast the lipid extract of a sample of the modern cow bone with the marrow fat removed was dominated by cholesterol; acyl lipids were present at low abundance. The GC and GC/MS analyses of the ancient bones of varying age and context of recovery also showed only a very low abundance of acyl lipids. Most significant was the finding of an appreciable concentration (1.5-46.5 mug g-1) of cholesterol together with its diagenetic degradation products, in all the samples that were examined. The possibility of using the cholesterol (and its degradation products) as a palaeodietary indicator is discussed. Evidence is also presented for the occurrence of bacterial marker compounds in the bone total lipid extracts. C1 UNIV DURHAM,DEPT ARCHAEOL,DURHAM DH1 3NU,ENGLAND. UNIV OXFORD,ARCHAEOL RES LAB,OXFORD OX1 3QJ,ENGLAND. SMITHSONIAN INST,CONSERVAT ANALYT LAB,WASHINGTON,DC 20560. UNIV LIVERPOOL,DEPT BIOCHEM,LIVERPOOL L69 3BX,ENGLAND. RP EVERSHED, RP (reprint author), UNIV BRISTOL,SCH CHEM,CANTOCKS CLOSE,BRISTOL BS8 1TS,AVON,ENGLAND. NR 35 TC 43 Z9 43 U1 1 U2 22 PU ACADEMIC PRESS (LONDON) LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0305-4403 J9 J ARCHAEOL SCI JI J. Archaeol. Sci. PD MAR PY 1995 VL 22 IS 2 BP 277 EP 290 DI 10.1006/jasc.1995.0030 PG 14 WC Anthropology; Archaeology; Geosciences, Multidisciplinary SC Anthropology; Archaeology; Geology GA RB296 UT WOS:A1995RB29600016 ER PT J AU BOCHERENS, H FOGEL, ML TUROSS, N ZEDER, M AF BOCHERENS, H FOGEL, ML TUROSS, N ZEDER, M TI TROPHIC STRUCTURE AND CLIMATIC INFORMATION FROM ISOTOPIC SIGNATURES IN PLEISTOCENE CAVE FAUNA OF SOUTHERN ENGLAND SO JOURNAL OF ARCHAEOLOGICAL SCIENCE LA English DT Article; Proceedings Paper CT Workshop on Bone Diagenesis CY JUL, 1993 CL OXFORD, ENGLAND DE STABLE ISOTOPES; CARBON; NITROGEN; OXYGEN; TOOTH; BONE; COLLAGEN; APATITE; TROPHIC LEVEL; ISOTOPIC DIFFERENCES; KENT CAVERN; UPPER PLEISTOCENE ID BONE-COLLAGEN; STABLE CARBON; NITROGEN; ECOLOGY; RATIOS; DIET; BIOGEOCHEMISTRY; PRESERVATION; FOODWEBS; TEETH AB The preservation of trophic structure and climatic information in Kent's Cavern Upper Pleistocene mammal bones and teeth was assessed by comparing the isotopic composition of modern and fossil equivalents. Yields of collagen from both bone (N=19) and tooth (N=49) were extremely variable, with values relative to modern bone ranging from 0% to 100%. No evidence of preferential preservation of tooth collagen was detected. The carbon and nitrogen isotopic differences in the herbivore versus carnivore collagen from Kent's Cavern fauna were consistent with those observed in modern faunas. Moreover, an enrichment of 0.4-1.7parts per thousand in N-15 was observed in tooth collagen of both deer and hyena as compared to bone collagen. This enrichment presumably reflects a trophic shift from the consumption of milk during infancy. Herbivores and carnivores had distinct differences in the carbon isotopic composition of enamel carbonate hydroxylapatite, similar to those measured in modern specimens from similar climatic environments. The spacing between the delta C-13 values (difference between isotopic composition in collagen and carbonate hydroxylapatite) of Kent's Cavern herbivores and carnivores is similar to that measured in modern mammals from a single locality. The preservation of primary oxygen isotopic composition of enamel carbonate hydroxylapatite was more difficult to assess, however. Oxygen isotopic compositions of Kent's Cavern enamel are systematically lower than those of contemporaneous faunas from Southern France, which is consistent with a latitudinal effect on rainfall oxygen isotopic compositions. Although the Kent's Cavern specimens have been subjected to extensive diagenetic alteration, the biological isotopic signals seem to have utility for paleoecological reconstructions. C1 SMITHSONIAN INST,MSC,CAL,SUITLAND,MD 20746. NATL MUSEUM NAT HIST,WASHINGTON,DC 20560. RP BOCHERENS, H (reprint author), CARNEGIE INST WASHINGTON,GEOPHYS LAB,5251 BROAD BRANCH RD NW,WASHINGTON,DC 20005, USA. RI Bocherens, Herve/F-3580-2011; Fogel, Marilyn/M-2395-2015 OI Bocherens, Herve/0000-0002-0494-0126; Fogel, Marilyn/0000-0002-1176-3818 NR 47 TC 93 Z9 93 U1 0 U2 13 PU ACADEMIC PRESS (LONDON) LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0305-4403 J9 J ARCHAEOL SCI JI J. Archaeol. Sci. PD MAR PY 1995 VL 22 IS 2 BP 327 EP 340 DI 10.1006/jasc.1995.0035 PG 14 WC Anthropology; Archaeology; Geosciences, Multidisciplinary SC Anthropology; Archaeology; Geology GA RB296 UT WOS:A1995RB29600021 ER PT J AU SIEGEL, FR GUPTA, N SHERGILL, B STANLEY, DJ GERBER, C AF SIEGEL, FR GUPTA, N SHERGILL, B STANLEY, DJ GERBER, C TI GEOCHEMISTRY OF HOLOCENE SEDIMENTS FROM THE NILE DELTA SO JOURNAL OF COASTAL RESEARCH LA English DT Article DE CHEMICAL ELEMENT DISTRIBUTIONS; HOLOCENE SEDIMENTARY FACIES; NILE DELTA EVOLUTION ID PALEOCLIMATIC OSCILLATIONS; HEAVY MINERALS; EGYPT; EVOLUTION; SUBSIDENCE; DEPOSITS; METALS AB Clay-size fractions of Holocene (to > 7,500 years BP) core samples (n = 173) from lagoonal/marsh, delta-front and prodelta facies in the northeast sector of the Nile delta were analyzed for 23 elements. The cores follow three distributary systems that were active at different times during delta evolution. The sediments are enriched in Fe, Mg, Ni, Cu and Zn with respect to the earth's continental crust. Factor analysis of the data show related element groups that may be interpreted as representing, for example, an aluminosilicate from a basic rock factor, a silicate-oxide factor, a clay mineral + paleosalinity factor, a biogenic factor, a redox factor and a sorption factor. The element enrichments and these factors record provenance (dominated by detritus and weathering products from the Ethiopian Highlands with its 75% Trap Series Basalts cover), physical, chemical and biological conditions in the depositional environments, and geography as it relates, in part, to subsidence and northeast tilting of the delta This tilting, coupled with rising sea level, affected Nile channel base levels and gradients during the Holocene. Binary plots of factor scores can differentiate between the <2 mu m size samples from the different environments represented in the deltaic sequence of each distributary. C1 OHIO STATE UNIV,DEPT GEOL,COLUMBUS,OH 43210. UNIV KENTUCKY,DEPT GEOL,LEXINGTON,KY 40506. NATL MUSEUM NAT HIST,SMITHSONIAN INST,MEDITERRANEAN BASIN PROGRAM,WASHINGTON,DC 20560. WOODWARD CLYDE CONSULTANTS,WASHINGTON,DC. RP SIEGEL, FR (reprint author), GEORGE WASHINGTON UNIV,DEPT GEOL,WASHINGTON,DC 20052, USA. NR 49 TC 8 Z9 8 U1 1 U2 4 PU COASTAL EDUCATION & RESEARCH FOUNDATION PI LAWRENCE PA 810 EAST 10TH STREET, LAWRENCE, KS 66044 SN 0749-0208 J9 J COASTAL RES JI J. Coast. Res. PD SPR PY 1995 VL 11 IS 2 BP 415 EP 431 PG 17 WC Environmental Sciences; Geography, Physical; Geosciences, Multidisciplinary SC Environmental Sciences & Ecology; Physical Geography; Geology GA QW955 UT WOS:A1995QW95500010 ER PT J AU ROTH, TL SWANSON, WF BLUMER, E WILDT, DE AF ROTH, TL SWANSON, WF BLUMER, E WILDT, DE TI ENHANCING ZONA PENETRATION BY SPERMATOZOA FROM A TERATOSPERMIC SPECIES, THE CHEETAH (ACINONYX-JUBATUS) SO JOURNAL OF EXPERIMENTAL ZOOLOGY LA English DT Article ID DOMESTIC CAT; PELLUCIDA PENETRATION; ABNORMAL SPERMATOZOA; FERTILIZATION; INVITRO; SPERM; DISSECTION; OOCYTES; BIOLOGY AB Cheetahs (Acinonyx jubatus) produce poor quality ejaculates that can limit the efficiency of standard assisted reproduction including artificial insemination (AI) and in vitro fertilization (IVF). The purpose of this study was to: (1) further study sperm-oocyte interaction in this teratospermic species by examining the ability of malformed sperm to interact with various oocyte barriers; and (2) assess the potential of zona piercing for assisting IVF in a teratospermic felid. Zonae of salt-stored (SS), domestic cat oocytes were mechanically pierced (ZnPd) three times each. Semen was collected by electroejaculation from six male cheetahs and ejaculates were processed for IVF. Sperm aliquots from each ejaculate were assessed for a sperm motility index (SMI) over time. Zona-intact (ZnIn-SS) oocytes (n = 78) and ZnPd-SS oocytes (n = 74) were coincubated with spermatozoa in vitro for 6 h. The proportion of morphologically abnormal spermatozoa per ejaculate was high for all males (range 81.5% to 95.9%). SMI values at 0 and 6 h were variable, ranging from 50 to 75 and 0 to 40, respectively. Spermatozoa from all ejaculates bound to and penetrated the outer zona pellucida of ZnIn-SS and ZnPd-SS oocytes similarly (P > 0.05). The proportion of oocytes containing spermatozoa within the inner zona layer and the average number of spermatozoa per oocyte in this region were greater (P < 0.05) for the ZnPd-SS than ZnIn-SS oocytes (39.2% and 1.0 versus 12.8% and 0.2, respectively). Although zona piercing enhanced sperm penetration, there was no increase (P > 0.05) in pleiomorphic spermatozoa penetrating the inner zona pellucida or PVS. Penetration of both ZnIn-SS and ZnPd-SS oocytes was positively correlated (P < 0.05; r = 0.91) with SMI at 6 h but not to the proportion of pleiomorphic spermatozoa ejaculated (P > 0.05). In summary, altering the integrity of the zona pellucida by creating artificial channels increases the number of cheetah spermatozoa entering the inner zona region, but not the PVS. This phenomenon occurs without increasing the number of pleiomorphic sperm entering the zona/oocyte interface, reinforcing the role of the zona pellucida, especially the inner region, as a powerful filter for malformed sperm. (C) 1995 Wiley-Liss, Inc. C1 FOSSIL RIM WILDLIFE CTR,GLEN ROSE,TX 76043. RP ROTH, TL (reprint author), SMITHSONIAN INST,NATL ZOOL PK,CTR CONSERVAT & RES,DEPT REPROD PHYSIOL,1500 REMOUNT RD,FRONT ROYAL,VA 22630, USA. FU NICHD NIH HHS [R0 1 HD 23853] NR 30 TC 17 Z9 19 U1 1 U2 11 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0022-104X J9 J EXP ZOOL JI J. Exp. Zool. PD MAR 1 PY 1995 VL 271 IS 4 BP 323 EP 330 DI 10.1002/jez.1402710410 PG 8 WC Zoology SC Zoology GA QN691 UT WOS:A1995QN69100009 PM 7722475 ER PT J AU TUROSS, N DILLEHAY, TD AF TUROSS, N DILLEHAY, TD TI THE MECHANISM OF ORGANIC PRESERVATION AT MONTE VERDE, CHILE, AND ONE USE OF BIOMOLECULES IN ARCHAEOLOGICAL INTERPRETATION SO JOURNAL OF FIELD ARCHAEOLOGY LA English DT Article ID BLOOD RESIDUE ANALYSIS; TOOL SURFACES; BONE; IDENTIFICATION; COLLAGEN; PROTEINS; REMAINS; ORIGIN AB Monte Verde, a habitation site in southern Chile, is the source of exceptionally well-preserved organic materials. The depositional and chemical circumstances that led to the persistence of this unique assemblage included an anoxic, reducing environment protected by an overlying peat layer and a silica gel-rich substrate. Utilizing the immunological techniques of ELISA assays and Western blots, a subset of lithic artifacts was tested for blood traces. Geochemical analysis of the soil matrix provided the necessary comparative data for assessing the biological etiology of the residue extracted from these tools. One tool was found to be positive for hemoglobin, and was convincingly above both the chemical and geological background of the immunological assays. These findings complement the archaeological interpretation of the site. C1 UNIV KENTUCKY,DEPT ANTHROPOL,LEXINGTON,KY 40506. RP TUROSS, N (reprint author), SMITHSONIAN INST,CONSERVAT ANALYT LAB,4210 SILVER HILL RD,SUITLAND,MD 20746, USA. NR 51 TC 29 Z9 30 U1 0 U2 20 PU JOURNAL FIELD ARCHAEOLOGY PI BOSTON PA BOSTON UNIV 675 COMMUNWEALTH AVE, BOSTON, MA 02215 SN 0093-4690 J9 J FIELD ARCHAEOL JI J. Field Archaeol. PD SPR PY 1995 VL 22 IS 1 BP 97 EP 110 DI 10.2307/529852 PG 14 WC Archaeology SC Archaeology GA QH377 UT WOS:A1995QH37700007 ER PT J AU UBELAKER, DH JACOBS, CH AF UBELAKER, DH JACOBS, CH TI IDENTIFICATION OF ORTHOPEDIC DEVICE MANUFACTURER SO JOURNAL OF FORENSIC SCIENCES LA English DT Article DE PHYSICAL ANTHROPOLOGY; HUMAN IDENTIFICATION; ORTHOPEDIC DEVICES; SURGICAL IMPLANTS; IDENTIFICATION; MANUFACTURERS AB Orthopedic devices recovered in association with skeletal remains offer information that can assist in identification. Frequently, surgical devices contain information that allow the identification of the manufacturer. Since March 1, 1993 a tracking system is in place that may allow the identification of the individual patient. A recent survey of the manufacturing companies results in summary information on the identification labels on products that allow them to be traced. C1 DATASCOPE CORP,DIV COLLAGEN PROD,MFG OPERAT,MONTVALE,NJ. RP UBELAKER, DH (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ANTHROPOL,WASHINGTON,DC 20560, USA. NR 7 TC 16 Z9 19 U1 0 U2 0 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0022-1198 J9 J FORENSIC SCI JI J. Forensic Sci. PD MAR PY 1995 VL 40 IS 2 BP 168 EP 170 PG 3 WC Medicine, Legal SC Legal Medicine GA QN285 UT WOS:A1995QN28500003 ER PT J AU MCCORMICKGOODHART, MH AF MCCORMICKGOODHART, MH TI MOISTURE-CONTENT ISOLINES OF GELATIN AND THE IMPLICATIONS FOR ACCELERATED AGING TESTS AND LONG-TERM STORAGE OF PHOTOGRAPHIC MATERIALS SO JOURNAL OF IMAGING SCIENCE AND TECHNOLOGY LA English DT Article AB The moisture-content isolines of a photographic gelatin were measured. Constant moisture content was established experimentally by sealing gelatin in a vapor-tight container with little free air volume compared with the volume of gelatin. The temperature was varied, and the relative humidity in the free space was measured after thermal and vapor phase equilibrium had been reached. A significant shift in the moisture vapor phase equilibrium over gelatin was found. Surprisingly, moisture-content isolines easily reveal the glass transition temperature of the gelatin, and the glass transition's strong dependence on moisture content was confirmed. Traditional moisture-absorption isotherms do not clearly indicate the glass transition temperature. The implications of these results are discussed with regard to interpretation of accelerated aging tests, to storage in unregulated environments, and to low-temperature storage of photographic materials. RP MCCORMICKGOODHART, MH (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 13 TC 8 Z9 8 U1 0 U2 0 PU I S & T - SOC IMAGING SCIENCE TECHNOLOGY PI SPRINGFIELD PA 7003 KILWORTH LANE, SPRINGFIELD, VA 22151 SN 8750-9237 J9 J IMAGING SCI TECHN JI J. Imaging Sci. Technol. PD MAR-APR PY 1995 VL 39 IS 2 BP 157 EP 162 PG 6 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA RY200 UT WOS:A1995RY20000010 ER PT J AU ASHER, GW FISHER, MW BERG, DK VELDHUIZEN, FA MORROW, CJ AF ASHER, GW FISHER, MW BERG, DK VELDHUIZEN, FA MORROW, CJ TI LUTEOLYTIC POTENCY OF A PROSTAGLANDIN ANALOG AT DIFFERENT STAGES OF THE ESTROUS-CYCLE IN RED DEER (CERVUS-ELAPHUS) HINDS SO JOURNAL OF REPRODUCTION AND FERTILITY LA English DT Article ID GONADOTROPIN-RELEASING HORMONE; FARMED FALLOW DEER; DAMA-DAMA; ESTROUS SYNCHRONIZATION; PLASMA-CONCENTRATIONS; LUTEAL REGRESSION; ESTRUS; PROGESTERONE; PREGNANCY; OVULATION AB The luteolytic effect of the prostaglandin F-2 alpha analogue, cloprostenol, was investigated in red deer by monitoring concentrations of plasma progesterone, the induction of oestrus and ovulation, and fertility. Oestrus was synchronized in 48 adult hinds by intravaginal delivery of exogenous progesterone for 12 days and i.m. injection of 250 iu pregnant mares' serum gonadotrophin at progesterone withdrawal. A single i.m. dose of 500 mu g cloprostenol was administered at day 4, 6, 8, 10, 12, 14 or 16 of the subsequent oestrous cycle (n = 6 hinds per treatment; day 0 = oestrus). Six other hinds were monitored by intensive collection of blood samples between day 16 and day 19 to define changes in plasma progesterone concentrations during spontaneous luteolysis. Samples of jugular blood, collected every second day throughout the study and every 6 h for 78 h from the time of administration of cloprostenol, were analysed for plasma concentrations of progesterone and LH. Oestrus was detected by continuous observation during the period of intensive collection of blood samples and all hinds were subjected to transrectal ultrasonography to assess pregnancy status. On the basis of changes in plasma progesterone concentrations, cloprostenol induced complete luteolysis in all hinds treated on days 8-16 and in five of six hinds treated on day 6. Oestrus, ovulation and conception occurred in 25 (69%), 28 (78%) and 25 (69%), respectively, of hinds treated on days 6-16 inclusive (n = 36). Luteolysis was incomplete in all hinds treated on day 4, and none of the animals exhibited oestrus or ovulated; luteolysis was incomplete for one hind treated on day 6. Short luteal cycles (< 12 days duration) occurred in six hinds following cloprostenol treatment, but this occurred only in hinds treated on day 6 (n = 3), day 8 (n = 1) or day 10 (n = 2). The mean intervals from injection of cloprostenol to onset of oestrus and peak preovulatory LH surge values were significantly shorter for hinds treated on day 6 or day 8 (similar to 50 h and 52 h for oestrus and LH surges, respectively) than for those treated on days 10-16 inclusive (60 h and 65 h, respectively) (P < 0.05). It is concluded that on day 4 of the cycle, the cervine corpus luteum is refractory to a single injection of the prostaglandin analogue, whereas on day 6 the corpus luteum is responsive in most animals, and that whereas corpora lutea at days 8-10 are responsive in all animals, a high incidence of subsequent premature luteal regression may occur. Fertility to cloprostenol-induced oestrus and ovulation following natural mating was high, especially for hinds treated on days 12, 14 and 16 of the oestrous cycle (i.e., > 80% conception rate). C1 AGRES,RUAKURA AGR CTR,HAMILTON,NEW ZEALAND. SMITHSONIAN INST,CTR CONSERVAT & RES,NATL ZOOL PK,FRONT ROYAL,VA 22630. RP ASHER, GW (reprint author), AGRES,INVERMAY AGR CTR,PRIVATE BAG 50034,MOSGIEL,NEW ZEALAND. NR 27 TC 11 Z9 12 U1 0 U2 0 PU J REPROD FERTIL INC PI CAMBRIDGE PA 22 NEWMARKET RD, CAMBRIDGE, ENGLAND CB5 8DT SN 0022-4251 J9 J REPROD FERTIL JI J. Reprod. Fertil. PD MAR PY 1995 VL 103 IS 2 BP 307 EP 314 PG 8 WC Reproductive Biology SC Reproductive Biology GA QZ452 UT WOS:A1995QZ45200016 PM 7616503 ER PT J AU GOLDBERG, L BALLARD, M AF GOLDBERG, L BALLARD, M TI SYMPOSIUM-91, SAVING THE 20TH-CENTURY - THE CONSERVATION OF MODERN MATERIALS - GRATTAN,D SO JOURNAL OF THE AMERICAN INSTITUTE FOR CONSERVATION LA English DT Book Review C1 SMITHSONIAN INST,CONSERVAT ANAL LAB,WASHINGTON,DC 20560. NR 1 TC 0 Z9 0 U1 0 U2 1 PU AMER INST CONSERVATION HISTORIC ARTISTIC WORKS PI WASHINGTON PA 1717 K ST, NW, STE 301, WASHINGTON, DC 20006 SN 0197-1360 J9 J AM INST CONSERV JI J. Am. Inst. Conserv. PD SPR PY 1995 VL 34 IS 1 BP 86 EP 89 DI 10.2307/3179439 PG 4 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA TU092 UT WOS:A1995TU09200009 ER PT J AU GOLDBERG, L BALLARD, M AF GOLDBERG, L BALLARD, M TI CONSERVATION OF PLASTICS - MORGAN,J SO JOURNAL OF THE AMERICAN INSTITUTE FOR CONSERVATION LA English DT Book Review C1 SMITHSONIAN INST,CONSERVAT ANAL LAB,WASHINGTON,DC 20560. NR 1 TC 0 Z9 0 U1 0 U2 1 PU AMER INST CONSERVATION HISTORIC ARTISTIC WORKS PI WASHINGTON PA 1717 K ST, NW, STE 301, WASHINGTON, DC 20006 SN 0197-1360 J9 J AM INST CONSERV JI J. Am. Inst. Conserv. PD SPR PY 1995 VL 34 IS 1 BP 86 EP 89 DI 10.2307/3179439 PG 4 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA TU092 UT WOS:A1995TU09200008 ER PT J AU BELLEM, AC MONFORT, SL GOODROWE, KL AF BELLEM, AC MONFORT, SL GOODROWE, KL TI MONITORING REPRODUCTIVE DEVELOPMENT, MENSTRUAL CYCLICITY AND PREGNANCY IN THE LOWLAND GORILLA (GORILLA-GORILLA) BY ENZYME-IMMUNOASSAY SO JOURNAL OF ZOO AND WILDLIFE MEDICINE LA English DT Article DE GORILLA GORILLA; URINARY HORMONES; ESTRONE CONJUGATES; PREGNANEDIOL-GLUCURONIDE; PUBERTY; PREGNANCY ID OVARIAN-FUNCTION; URINARY PREGNANEDIOL-3-GLUCURONIDE; LUTEINIZING-HORMONE; FEMALE GORILLA; RHESUS-MONKEY; CYCLE; PROGESTERONE; METABOLITES; ESTROGEN; EXCRETION AB Enzyme immunoassay (EIA) of urinary estrone conjugates (EC) and pregnanediol-glucuronide (PdG) was used to monitor ovarian activity during puberty and to evaluate the use of EIA as compared with radioimmunoassay (RIA) for assessing normal menstrual cyclicity and pregnancy in lowland gorillas (Gorilla gorilla). Urinary hormone profiles revealed pubertal onset of ovarian activity beginning at 5.5 yr in one female, but regular ovarian cyclicity was not established until 7.5 yr. After the onset of puberty, distinct but irregularly spaced urinary EC peaks (21-38 days) were observed. Luteal phase durations at this time were short (5-9 days), and PdG concentrations were low (1.0-1.8 mu g/mg Cr) relative to normal adult cycles. During 13 menstrual cycles and four pregnancies in four adults, substantial interanimal variation in absolute concentrations of urinary steroid metabolites was detected, suggesting that ''normal'' population means for this species should be interpreted with caution. Metabolite excretion profiles for nonpregnant and pregnant females in the present study were similar to previously reported hormone excretion patterns, and EIA correlated well with RIA for both EC (r = 0.91, P < 0.005) and PdG (r = 0.89, P < 0.005), indicating that EIA provides a useful alternative to RIA for measuring urinary steroid metabolites. C1 SMITHSONIAN INST,CTR CONSERVAT & RES,FRONT ROYAL,VA 22630. SMITHSONIAN INST,NATL ZOOL PK,DEPT ANIM HLTH,FRONT ROYAL,VA 22630. RP BELLEM, AC (reprint author), METRO TORONTO ZOO,361A OLD FINCH AVE,SCARBOROUGH,ON M1B 5K7,CANADA. NR 26 TC 14 Z9 15 U1 3 U2 12 PU AMER ASSOC Z00 VETERINARIANS PI MEDIA PA 6 NORTH PENNELL ROAD, MEDIA, PA 19063 SN 1042-7260 J9 J ZOO WILDLIFE MED JI J. Zoo Wildl. Med. PD MAR PY 1995 VL 26 IS 1 BP 24 EP 31 PG 8 WC Veterinary Sciences SC Veterinary Sciences GA RX523 UT WOS:A1995RX52300004 ER PT J AU SCHULMAN, FY FARB, A VIRMANI, R MONTALI, RJ AF SCHULMAN, FY FARB, A VIRMANI, R MONTALI, RJ TI FIBROSING CARDIOMYOPATHY IN CAPTIVE WESTERN LOWLAND GORILLAS (GORILLA-GORILLA-GORILLA) IN THE UNITED-STATES - A RETROSPECTIVE STUDY SO JOURNAL OF ZOO AND WILDLIFE MEDICINE LA English DT Article DE WESTERN LOWLAND GORILLA; GORILLA GORILLA GORILLA; MYOCARDIAL FIBROSIS; CARDIOMYOPATHY; SUDDEN DEATH ID VIRUS AB Fibrosing cardiomyopathy defined as myocardial replacement fibrosis with atrophy and hypertrophy of cardiac myocytes, absent to mild myocardial inflammation, and no apparent etiology or associated disease condition was identified in 11 captive western lowland gorillas (Gorilla gorilla gorilla) in the United States. All 11 were male and ranged from 11 to 37 yr of age (($) over bar x +/- SD = 26 +/- 8 yr). In eight cases involving gorillas 16-37 yr of age (($) over bar x +/- SD = 28 +/- 7 yr), cardiac scarring was considered fatal. Seven of these eight gorillas died suddenly. Histologically, all eight hearts had multifocal to coalescing, moderate to marked myocardial fibrosis with atrophic and hypertrophied cardiac myocytes. Six gorillas exhibited minimal to mild inflammation, and three had vascular disease. Atherosclerosis was considered contributory in only one case. The deaths of three gorillas with fibrosing cardiomyopathy could not be directly attributed to myocardial fibrosis. Their hearts exhibited similar but less severe myocardial fibrosis than that seen in hearts considered fatally scarred. All three had mild myocardial inflammation, but notable vascular disease was not seen in any gorilla. Fibrosing cardiomyopathy was a significant (P = 0.007) cause of sudden death in adult male gorillas in this study. Additional research is necessary to identify the underlying cause(s) of this syndrome and improve the management of the captive gorilla population. C1 ARMED FORCES INST PATHOL,DEPT CARDIOVASC PATHOL,WASHINGTON,DC 20306. SMITHSONIAN INST,NATL ZOOL PK,DEPT PATHOL,WASHINGTON,DC 20008. RP SCHULMAN, FY (reprint author), ARMED FORCES INST PATHOL,DEPT VET PATHOL,WASHINGTON,DC 20306, USA. NR 19 TC 27 Z9 27 U1 1 U2 7 PU AMER ASSOC Z00 VETERINARIANS PI MEDIA PA 6 NORTH PENNELL ROAD, MEDIA, PA 19063 SN 1042-7260 J9 J ZOO WILDLIFE MED JI J. Zoo Wildl. Med. PD MAR PY 1995 VL 26 IS 1 BP 43 EP 51 PG 9 WC Veterinary Sciences SC Veterinary Sciences GA RX523 UT WOS:A1995RX52300006 ER PT J AU DUNCAN, M TELL, L GARDINER, CH MONTALI, RJ AF DUNCAN, M TELL, L GARDINER, CH MONTALI, RJ TI LINGUAL GONGYLONEMIASIS AND PASTEURELLOSIS IN GOELDI MONKEYS (CALLIMICO-GOELDII) SO JOURNAL OF ZOO AND WILDLIFE MEDICINE LA English DT Article DE GONGYLONEMA; GOELDIS MONKEY; CALLIMICO GOELDII; PASTEURELLOSIS AB Between July and November 1999, five Goeldi's monkeys (Callimico goeldii), from the collection at the National Zoological Park, were necropsied. All live monkeys had evidence of infection with Gongylonema sp., and Pasteurella multocida was isolated from three of the five monkeys. Spirurid infections of the upper digestive tract of primates are not infrequent, but they have been generally considered to be inconsequential. Clinical and necropsy findings in these cases suggest that such parasite infections may have a more significant effect on health than originally thought. C1 SMITHSONIAN INST,NATL ZOOL PK,DEPT PATHOL,WASHINGTON,DC 20008. SMITHSONIAN INST,NATL ZOOL PK,DEPT ANIM HLTH,WASHINGTON,DC 20008. ARMED FORCES INST PATHOL,DEPT VET PATHOL,WASHINGTON,DC 20306. NR 16 TC 12 Z9 12 U1 0 U2 3 PU AMER ASSOC Z00 VETERINARIANS PI MEDIA PA 6 NORTH PENNELL ROAD, MEDIA, PA 19063 SN 1042-7260 J9 J ZOO WILDLIFE MED JI J. Zoo Wildl. Med. PD MAR PY 1995 VL 26 IS 1 BP 102 EP 108 PG 7 WC Veterinary Sciences SC Veterinary Sciences GA RX523 UT WOS:A1995RX52300015 ER PT J AU KENNY, DE ELLER, JL CAMBRE, RC AF KENNY, DE ELLER, JL CAMBRE, RC TI CLINICAL CHALLENGE - CASE-1 SO JOURNAL OF ZOO AND WILDLIFE MEDICINE LA English DT Article C1 SMITHSONIAN INST,NATL ZOOL PK,DEPT ANIM HLTH,WASHINGTON,DC 20008. RP KENNY, DE (reprint author), DENVER ZOOL GARDENS,CTR ANIM HLTH,DENVER,CO 80205, USA. NR 3 TC 0 Z9 0 U1 0 U2 2 PU AMER ASSOC Z00 VETERINARIANS PI MEDIA PA 6 NORTH PENNELL ROAD, MEDIA, PA 19063 SN 1042-7260 J9 J ZOO WILDLIFE MED JI J. Zoo Wildl. Med. PD MAR PY 1995 VL 26 IS 1 BP 161 EP 163 PG 3 WC Veterinary Sciences SC Veterinary Sciences GA RX523 UT WOS:A1995RX52300025 ER PT J AU KALFATOVIC, MR AF KALFATOVIC, MR TI AGAINST-THE-GRAIN - THE NEW CRITERION ON ART AND INTELLECT AT THE END OF THE 20TH-CENTURY - LIPPARD,LR SO LIBRARY JOURNAL LA English DT Book Review RP KALFATOVIC, MR (reprint author), SMITHSONIAN INST LIB,WASHINGTON,DC, 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 MAR 1 PY 1995 VL 120 IS 4 BP 68 EP 68 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QJ555 UT WOS:A1995QJ55500033 ER PT J AU CAMERON, AGW AF CAMERON, AGW TI THE FIRST 10-MILLION YEARS IN THE SOLAR NEBULA SO METEORITICS LA English DT Article ID LOCAL SHEAR INSTABILITY; WEAKLY MAGNETIZED DISKS; ACCRETION DISKS; GIANT PLANETS; TURBULENT CONVECTION; ORDINARY CHONDRITE; SATURNS RINGS; EVOLUTION; STARS; COAGULATION AB The Al-26/Al-27 ratio in a large number of calcium-aluminum inclusions (CAIs) is a rather uniform 5 x 10(-5), whereas in chondrules the ratio is either undetectable or has a much lower value; the simplest interpretation of this is that there was an interval of a few million pears between the times that these two meteoritic constituents formed stable solids. The present investigation was undertaken as an exploration of the physics of the processes in the solar nebula during and after the accumulation of the Sun. Understanding the time scales of events in this nebular model, to see if this would cast light on this apparent CAI to chondrule time interval, was the major motivation for the exploration. There were four stages in the history of the solar nebula; in stage 1, a fragment of an interstellar molecular cloud collapsed to form the Sun and solar nebula; in stage 2, the nebula was in approximate steady state balance between infall from the cloud and accretion onto the Sun and was in its FU Orionis accumulation stage; in stage 3, the Sun had been mainly accumulated and there was a slow residual mass flow into the Sun while it was in its classical T Tauri stage; and in stage 4, the nebula had finished accreting material onto the Sun (now a weak-lined T Tauri star) and was in a static condition with no significant dissipation or motions, other than removal at the inner edge due to the T Tauri solar wind and photoevaporation beyond 9 astronomical units (AU). It is found that the energy source keeping the nebula warm during stages 3 and 4 is recombination of ionized H in the ionized bipolar jets and the T Tauri coronal expansion solar wind. The parameters of the heating model were adjusted to locate the ice sublimation line at 5.2 AU. In this work, a nebular model is used with a surface density of 4.25 x 10(3) gm/cm(2) at 1 AU and a variation with radial distance as the inverse first power. Under normal conditions in the nebula, there is a negative pressure gradient that provides partial radial support for the gas, which thus circles the Sun more slowly than large solid objects do. Large objects undergo a slow inward spiral due to the gas drag; very small objects move essentially with the gas but have a slow inward drift; and intermediate objects (e.g., 1 m) have a fairly large inward drift velocity that traverses the full radial extent of the nebula in considerably less than the CAI to chondrule time interval. Such objects are thus lost unless they can grow rapidly to larger sizes. Near the inner edge (bow) of the nebula during stage 4, the pressure gradient becomes positive, creating a narrow zone of zero gas drag toward which solids drift from both directions, facilitating planetesimal formation in the inner solar nebula. Recent theoretical and experimental results on sticking probabilities of solids show that icy surfaces have the best sticking properties, but icy interstellar grains can only stick together when subjected to impact velocities of less than 2000 cm/sec. However, if the solid objects are very underdense, then a collision leads to interpenetration and many points at which the small constituent grains can adhere to one another, and thus coagulation becomes possible for such underdense objects. Simulations were made of such coagulation in the outer solar nebula, and it was found that the central plane of the nebula quickly becomes filled with meter-sized and larger bodies that rapidly accumulated near the top of the nebula and rapidly descended; in a few thousand years this quickly leads to gravitational instabilities that can form planetesimals. These processes led to the rapid formation of Jupiter in the nebula (and the slightly less rapid formation of the other giant planets). The early formation of Jupiter opens an annular gap in the nebula, and thus a second region is created in the nebula with zero gas drag. It is concluded that CAIs were formed at the end of stage 2 of the nebula history and moved out into the nebula for long-term storage, and that mast chondrules were formed by magnetic reconnection flares in the bow region of the nebula during stage 4, several million years later. Carbonaceous meteorites should be formed on the far side of the Jovian gap, with the chondrules being heated by flares on the early Jupiter irradiating materials in the nearby zone of zero gas drag, and they should have essentially the same Al-26 ages as the CAIs (this will be very hard to confirm owing to scarcity of Al mineral phases in these chondrules). RP CAMERON, AGW (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 90 TC 108 Z9 108 U1 2 U2 10 PU METEORITICAL SOC PI FAYETTEVILLE PA DEPT CHEMISTRY/BIOCHEMISTRY, UNIV ARKANSAS, FAYETTEVILLE, AR 72701 SN 0026-1114 J9 METEORITICS JI Meteoritics PD MAR PY 1995 VL 30 IS 2 BP 133 EP 161 PG 29 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QN084 UT WOS:A1995QN08400002 ER PT J AU VIOLA, HJ AF VIOLA, HJ TI SACRED ENCOUNTERS - FATHER DESMET AND THE INDIANS OF THE ROCKY-MOUNTAIN WEST - PETERSON,J, PEER,L SO MONTANA-THE MAGAZINE OF WESTERN HISTORY LA English DT Book Review RP VIOLA, HJ (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MONTANA HISTORICAL SOC PI HELENA PA 225 N ROBERTS ST, HELENA, MT 59601 SN 0026-9891 J9 MONTANA JI Mont.-Mag. West. Hist. PD SPR PY 1995 VL 45 IS 2 BP 85 EP 85 PG 1 WC History SC History GA RD162 UT WOS:A1995RD16200027 ER PT J AU LORNELL, K AF LORNELL, K TI THE BILLBOARD BOOK OF NUMBER ONE RHYTHM AND BLUES HITS - WHITE,A, BRONSON,F SO NOTES LA English DT Book Review RP LORNELL, K (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MUSIC LIBRARY ASSN PI CATON PA BUSINESS OFFICE PO BOX 487, CATON, MA 02021 SN 0027-4380 J9 NOTES JI Notes PD MAR PY 1995 VL 51 IS 3 BP 959 EP 961 DI 10.2307/899322 PG 3 WC Music SC Music GA QK040 UT WOS:A1995QK04000043 ER PT J AU LORNELL, K AF LORNELL, K TI SAVE THE LAST DANCE FOR ME - THE MUSICAL LEGACY OF THE DRIFTERS, 1953-1993 - ALLAN,T, TRADWELL,F SO NOTES LA English DT Book Review RP LORNELL, K (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MUSIC LIBRARY ASSN PI CATON PA BUSINESS OFFICE PO BOX 487, CATON, MA 02021 SN 0027-4380 J9 NOTES JI Notes PD MAR PY 1995 VL 51 IS 3 BP 959 EP 961 DI 10.2307/899322 PG 3 WC Music SC Music GA QK040 UT WOS:A1995QK04000046 ER PT J AU LORNELL, K AF LORNELL, K TI DOO-WOP - THE FORGOTTEN 3RD OF ROCK-N-ROLL - GRIBEN,AJ, SCHIFF,MM SO NOTES LA English DT Book Review RP LORNELL, K (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MUSIC LIBRARY ASSN PI CATON PA BUSINESS OFFICE PO BOX 487, CATON, MA 02021 SN 0027-4380 J9 NOTES JI Notes PD MAR PY 1995 VL 51 IS 3 BP 959 EP 961 DI 10.2307/899322 PG 3 WC Music SC Music GA QK040 UT WOS:A1995QK04000045 ER PT J AU LORNELL, K AF LORNELL, K TI THE BLACKWELL GUIDE TO SOUL RECORDINGS - PRUTER,R SO NOTES LA English DT Book Review RP LORNELL, K (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MUSIC LIBRARY ASSN PI CATON PA BUSINESS OFFICE PO BOX 487, CATON, MA 02021 SN 0027-4380 J9 NOTES JI Notes PD MAR PY 1995 VL 51 IS 3 BP 959 EP 961 DI 10.2307/899322 PG 3 WC Music SC Music GA QK040 UT WOS:A1995QK04000044 ER PT J AU GUCLU, MC WELLS, JC UMAR, AS STRAYER, MR ERNST, DJ AF GUCLU, MC WELLS, JC UMAR, AS STRAYER, MR ERNST, DJ TI IMPACT-PARAMETER DEPENDENCE OF MULTIPLE LEPTON-PAIR PRODUCTION FROM ELECTROMAGNETIC-FIELDS SO PHYSICAL REVIEW A LA English DT Article ID HEAVY-ION COLLISIONS; ELECTRON-POSITRON PAIRS; PARTICLE-PRODUCTION; DILEPTON EMISSION; BEAMS C1 VANDERBILT UNIV,DEPT PHYS & ASTRON,NASHVILLE,TN 37235. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP GUCLU, MC (reprint author), OAK RIDGE NATL LAB,CTR COMPUTAT INTENS PHYS,DIV PHYS,OAK RIDGE,TN 37831, USA. RI Umar, Ahmet/J-4125-2013; Wells, Jack/D-3675-2016 OI Umar, Ahmet/0000-0002-9267-5253; Wells, Jack/0000-0002-5083-3030 NR 44 TC 37 Z9 37 U1 1 U2 2 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 MAR PY 1995 VL 51 IS 3 BP 1836 EP 1844 DI 10.1103/PhysRevA.51.1836 PG 9 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QN231 UT WOS:A1995QN23100020 ER PT J AU SAVIN, DW GARDNER, LD REISENFELD, DB YOUNG, AR KOHL, JL AF SAVIN, DW GARDNER, LD REISENFELD, DB YOUNG, AR KOHL, JL TI ABSOLUTE-RATE COEFFICIENT FOR C3+(2S-]2P) ELECTRON-IMPACT EXCITATION SO PHYSICAL REVIEW A LA English DT Article ID CROSS-SECTIONS; C-IV; EXPERIMENTAL APPARATUS; 2S-2P EXCITATION; RESONANCE LINES; ION COLLISIONS; POLARIZATION; BE+; RECOMBINATION; TRANSITION C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RI Savin, Daniel/B-9576-2012; Reisenfeld, Daniel/F-7614-2015 OI Savin, Daniel/0000-0002-1111-6610; NR 47 TC 18 Z9 18 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 MAR PY 1995 VL 51 IS 3 BP 2162 EP 2168 DI 10.1103/PhysRevA.51.2162 PG 7 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QN231 UT WOS:A1995QN23100060 ER PT J AU JAMIESON, MJ DALGARNO, A KIMURA, M AF JAMIESON, MJ DALGARNO, A KIMURA, M TI SCATTERING LENGTHS AND EFFECTIVE RANGES FOR HE-HE AND SPIN-POLARIZED H-H AND D-D SCATTERING SO PHYSICAL REVIEW A LA English DT Note ID CONFIGURATION-INTERACTION CALCULATIONS; DIFFERENTIAL CROSS-SECTIONS; HELIUM DIMER; ELASTIC-SCATTERING; REPULSIVE WALL; ENERGY; COLLISIONS; HYDROGEN; POTENTIALS; CURVES C1 UNIV GLASGOW,DEPT COMP SCI,GLASGOW,LANARK,SCOTLAND. RP JAMIESON, MJ (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,INST THEORET ATOM & MOLEC PHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 26 TC 52 Z9 52 U1 0 U2 8 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 MAR PY 1995 VL 51 IS 3 BP 2626 EP 2629 DI 10.1103/PhysRevA.51.2626 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA QN231 UT WOS:A1995QN23100111 ER PT J AU CROUCH, TD AF CROUCH, TD TI TRIUMPH AT KITTY-HAWK - THE WRIGHT BROTHERS AND POWERED FLIGHT - PARRAMORE,TC SO PUBLIC HISTORIAN LA English DT Book Review RP CROUCH, TD (reprint author), SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560, USA. NR 1 TC 0 Z9 0 U1 0 U2 2 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 SPR PY 1995 VL 17 IS 2 BP 73 EP 74 PG 2 WC History SC History GA RC314 UT WOS:A1995RC31400014 ER PT J AU FIELD, CR AF FIELD, CR TI THE GRAND AMERICAN AVENUE, 1850-1920 SO PUBLIC HISTORIAN LA English DT Art Exhibit Review RP FIELD, CR (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, 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 SPR PY 1995 VL 17 IS 2 BP 119 EP 123 PG 5 WC History SC History GA RC314 UT WOS:A1995RC31400043 ER PT J AU FIELD, CR AF FIELD, CR TI THE GRAND AMERICAN AVENUE - 1850-1920 - CIGLIANO,J, LANDAU,SB SO PUBLIC HISTORIAN LA English DT Book Review RP FIELD, CR (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, 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 SPR PY 1995 VL 17 IS 2 BP 119 EP 123 PG 5 WC History SC History GA RC314 UT WOS:A1995RC31400044 ER PT J AU PROSSER, CF SHETRONE, MD DASGUPTA, A BACKMAN, DE LAAKSONEN, BD BAKER, SW MARSCHALL, LA WHITNEY, BA KUIJKEN, K STAUFFER, JR AF PROSSER, CF SHETRONE, MD DASGUPTA, A BACKMAN, DE LAAKSONEN, BD BAKER, SW MARSCHALL, LA WHITNEY, BA KUIJKEN, K STAUFFER, JR TI ROTATION PERIODS OF OPEN-CLUSTER STARS .3. SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC LA English DT Article ID MAIN-SEQUENCE STARS; T-TAURI STARS; TIME-SERIES; PLEIADES; VARIABILITY; AURIGA; REGION; DWARFS AB We present the results from a photometric monitoring program of 15 open cluster stars and one weak-lined T Tauri star during late 1993/early 1994. Several slow rotators which are members of the Alpha Persei, Pleiades, and Hyades open clusters have been monitored and period estimates derived. Using all available Pleiades stars with photometric periods together with current X-ray flux measurements, we illustrate the X-ray activity/rotation relation among Pleiades late-G/K dwarfs. The data show a clear break in the rotation-activity relation around P similar to 6-7 days-in general accordance with previous results using more heterogeneous samples of GPK stars. C1 UNIV CALIF SANTA CRUZ,UNIV CALIF OBSERV,LICK OBSERV,BOARD STUDIES ASTRON & ASTROPHYS,SANTA CRUZ,CA 95064. FRANKLIN & MARSHALL COLL,DEPT PHYS & ASTRON,LANCASTER,PA 17604. GETTYSBURG COLL,DEPT PHYS,GETTYSBURG,PA 17325. UNIV GRONINGEN,KAPTEYN LAB,9700 AV GRONINGEN,NETHERLANDS. RP PROSSER, CF (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 30 TC 81 Z9 81 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 SN 0004-6280 J9 PUBL ASTRON SOC PAC JI Publ. Astron. Soc. Pac. PD MAR PY 1995 VL 107 IS 709 BP 211 EP 218 DI 10.1086/133541 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QM546 UT WOS:A1995QM54600001 ER PT J AU KALFATOVIC, MR AF KALFATOVIC, MR TI THE NATIONAL JOBLINE DIRECTORY - OVER 2,000 COMPANIES, GOVERNMENT AGENCIES, AND OTHER ORGANIZATIONS THAT POST JOB OPENINGS BY PHONE - SCHMIDT,R SO RQ LA English DT Book Review RP KALFATOVIC, MR (reprint author), SMITHSONIAN INST LIB,WASHINGTON,DC, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER LIBRARY ASSN PI CHICAGO PA 50 E HURON ST, CHICAGO, IL 60611 SN 0033-7072 J9 RQ JI RQ PD SPR PY 1995 VL 34 IS 3 BP 401 EP 401 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QW090 UT WOS:A1995QW09000039 ER PT J AU HEYMAN, IM AF HEYMAN, IM TI SMITHSONIAN PERSPECTIVES SO SMITHSONIAN LA English DT Editorial Material RP HEYMAN, IM (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, 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 MAR PY 1995 VL 25 IS 12 BP 13 EP 13 PG 1 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA QH382 UT WOS:A1995QH38200001 ER PT J AU HERRE, EA AF HERRE, EA TI TESTS OF OPTIMALITY MODELS SO TRENDS IN ECOLOGY & EVOLUTION LA English DT Letter RP HERRE, EA (reprint author), SMITHSONIAN TROP RES INST,UNIT 0948,APO,AA 34002, USA. NR 2 TC 7 Z9 7 U1 2 U2 2 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0169-5347 J9 TRENDS ECOL EVOL JI Trends Ecol. Evol. PD MAR PY 1995 VL 10 IS 3 BP 121 EP 121 DI 10.1016/S0169-5347(00)89006-0 PG 1 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA QJ053 UT WOS:A1995QJ05300009 PM 21236977 ER PT J AU WINKER, K AF WINKER, K TI HABITAT SELECTION IN WOODLAND NEARCTIC NEOTROPIC MIGRANTS ON THE ISTHMUS OF TEHUANTEPEC .1. AUTUMN MIGRATION SO WILSON BULLETIN LA English DT Article ID INLAND STOPOVER SITE; BIRDS AB The distribution of autumn migrants among Neotropical wooded habitats was examined using mist nets in a rainforest region of southern Mexico. Capture distributions and local movements from north and south (as reflected by net captures) were examined in 17 species. All species showed significant nonrandom distributions. Captures from the north were not more frequent than expected by chance. Local diurnal movements, therefore, do not reflect the known latitudinal movements occurring in these species, which makes it unlikely that local habitat use is simply the result of directional wandering. Although 65% of captured individuals were first-year birds having no previous experience with tropical rainforest, capture distributions suggested species-specific selectivity to a rather high degree. Also, in the 10 species with adequate sample sizes, distributions between early- and later-day captures tended to be remarkably constant. Habitat selection in these species may be largely endogenous. C1 SMITHSONIAN INST,NZP,CTR CONSERVAT & RES,FRONT ROYAL,VA 22630. RI Winker, Kevin/M-2042-2014 OI Winker, Kevin/0000-0002-8985-8104 NR 23 TC 12 Z9 12 U1 1 U2 3 PU WILSON ORNITHOLOGICAL SOC PI ANN ARBOR PA MUSEUM OF ZOOLOGY UNIV MICHIGAN, ANN ARBOR, MI 48109 SN 0043-5643 J9 WILSON BULL JI Wilson Bull. PD MAR PY 1995 VL 107 IS 1 BP 26 EP 39 PG 14 WC Ornithology SC Zoology GA QM261 UT WOS:A1995QM26100003 ER PT J AU GREENHILL, LJ JIANG, DR MORAN, JM REID, MJ LO, KY CLAUSSEN, MJ AF GREENHILL, LJ JIANG, DR MORAN, JM REID, MJ LO, KY CLAUSSEN, MJ TI DETECTION OF A SUBPARSEC DIAMETER DISK IN THE NUCLEUS OF NGC-4258 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 4258); GALAXIES, KINEMATICS AND DYNAMICS; GALAXIES, NUCLEI; MASERS; TECHNIQUES, INTERFEROMETRIC ID WATER-VAPOR MASERS; GALACTIC NUCLEI; H2O MASER; VLBI OBSERVATIONS; RADIO-SOURCES; NGC-4258; EMISSION; GALAXIES; ARMS AB We present the first VLBI synthesis map of the luminous H2O maser in the nucleus of NGC 4258 (M106). The spectral features of the masers near the systemic velocity, i.e., between 455 and 528 km s(-1), are distributed along an almost east-west line in the sky (83 degrees +/- 2 degrees east of north), subtending about 260 microarcseconds (mu as) in angle (0.009 pc, at a distance of 7 Mpc). The distribution in the orthogonal direction is less than 50 mu as in extent. The line-of-sight velocity of the maser emission changes with position along the are with an essentially constant gradient of 3.70 +/- 0.02 mu as km(-1) s or 7970 +/- 40 km s(-1) pc(-1). The most redshifted emission lies farthest to the east. The masers clearly delineate a disk structure, viewed edge-on, which is either in solid body rotation or in Keplerian motion where the masers are confined to an annulus having a fractional width of less than 0.3. This masing region is about an order of magnitude more compact than the one in NGC 3079, the only other extremely luminous extragalactic H2O maser that has been mapped with VLBI techniques. The position of the maser (referenced to the feature at 465.76 km s(-1)) is alpha(2000) = 12(h)18(m)57.(s)510 +/- 0.(s)004, delta(2000) = 47 degrees 18'14 ''.27 +/- 0 ''.03, which is coincident with the position of the continuum nuclear source to within 2 pc. The simplest model that explains our data is one in which emission from the nucleus NGC 4258 originates in a Keplerian molecular ring that is at least 0.014 pc in diameter and bound by a central mass of about 5000 M circle dot. If we consider the recently discovered high-velocity emission at +/-900 km s(-1) offset from the systemic velocity, whose positions we did not measure, as well as the apparent centripetal acceleration of the systemic velocity features of about 6-11 km s(-1) yr(-1), then a more comprehensive model is that of a disk of diameter 0.2 pc, rotating with a velocity of 900 km s(-1) (rotational period of 800 yr), which is bound by a central mass of about 2.1 x 10(7) M circle dot. The total gas mass in the disk is limited to 10(6) M circle dot. The maser emission arises in a toroidal region with a fractional thickness of about 0.2. This toroid/disk probably lies near the center of the galactic nucleus. For both of these disk models, the mass density of the central source is at least 3.5 x 10(9) M circle dot pc(-3), which could be concentrated in a supermassive object. The maser emission that we observed near the systemic velocity has a brightness temperature of at least 10(11) K and is probably unsaturated and amplifies a background, high brightness-temperature, radio-continuum source known to exist in the nucleus. The beam angle of the emission is probably about 0.015 sr. The VLBI observations reported here provide an invaluable dynamical probe of subparsec-scale structure in the nucleus of a nearby active galaxy. The measurements of centripetal acceleration and the VLBI observations provide a distance estimate for the galaxy of 5.4 +/- 1.3 pc. C1 UNIV ILLINOIS, DEPT ASTRON, URBANA, IL 61801 USA. NATL RADIO ASTRON OBSERV, SOCORRO, NM 87801 USA. RP HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 47 TC 174 Z9 179 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD FEB 20 PY 1995 VL 440 IS 2 BP 619 EP 627 DI 10.1086/175301 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG505 UT WOS:A1995QG50500017 ER PT J AU HOFLICH, P AF HOFLICH, P TI REMARKS ON THE POLARIZATION OBSERVED IN SN 1993J SO ASTROPHYSICAL JOURNAL LA English DT Article DE POLARIZATION; RADIATIVE TRANSFER; SUPERNOVAE, INDIVIDUAL (SN 1993J) ID SCATTERING-DOMINATED PHOTOSPHERES; SUPERNOVA 1987A; SN-1987A; SN-1993J; ENVELOPE; LIGHT; STARS; MASS AB Different geometries of the expanding shell are studied including (1) aspherical envelopes or off-center sources in spherical shells. The size of the polarization observed can be explained by prolate and oblate ellipsoids with axis ratios of about 0.6 and 2, respectively, and/or by the presence of off-center sources which may be produced as a consequence of a close binary evolution. The different geometries are discussed, in particular, distortion of the envelope by an aspherical central explosion, rotation of the progenitor star, and the explosion of a progenitor being member of a close binary system. Based on previous hydrodynamical studies (e.g., Yamada & Sato 1990; Hoflich & Steinmetz 1991; Steinmetz & Hoflich 1992; Khokhlov 1993) and simple considerations, the most likely configuration for SN 1993J is a binary system in which the progenitor undergoes a common envelope phase or is member in a close system for configuration (1) and (3), respectively. RP HOFLICH, P (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 38 TC 35 Z9 35 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 FEB 20 PY 1995 VL 440 IS 2 BP 821 EP 829 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG505 UT WOS:A1995QG50500033 ER PT J AU BARRET, D GRINDLAY, JE AF BARRET, D GRINDLAY, JE TI EXOSAT OBSERVATIONS OF THE LOW-LUMINOSITY X-RAY BURSTER 4U-0614+091 - EVIDENCE FOR A HARD POWER-LAW TAIL SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, INDIVIDUAL (4U 0614+091); X-RAYS, BURSTS; X-RAYS, STARS ID EMISSION; SPECTRUM; BINARIES AB We have analyzed archival EXOSAT observations of 4U 0614+091 as recorded by the Medium Energy experiment (2-10 keV). The data set consists of five spectra, all associated with low X-ray luminosities (L(X,1-20 keV) less than or equal to 2 x 10(36) ergs s(-1), d = 2 kpc). The spectrum corresponding to the highest intensity state (F-X = 3.9 x 10 ergs cm(-2) s(-1)) is well fitted by the combination of a steep power law with a photon index of 2.7 and a relatively strong 1.5 keV blackbody component carrying off 25% of the total 1-20 keV luminosity. The two spectra associated with the lowest X-ray fluxes (F-X = 1.2, 1.1 x 10(-9) ergs cm(-2) s(-1)) are adequately described by the sum of a harder power law (photon index similar to 1.9) and a cooler blackbody component (similar to 0.5 keV) carrying of 6% and 10% of the 1-20 keV flux, respectively. Finally, for the two other spectra with slightly larger X-ray fluxes (F-X = 1.5 x 10(-9) ergs cm(-2) s(-1)), both are best fitted by a single power law (photon index similar to 2.1-2.2), and an upper limit of similar to 10% on the contribution of any blackbody component with temperature between 0.5 and 1.5 keV has been derived. 4U 0614+091 enlarges the list of X-ray bursters displaying a hard power-law spectrum in X-rays at low-luminosity states, as well as a clear anticorrelation between spectral hardness and intensity. The EXOSAT results show that when the contribution of the blackbody component reaches 25% of the total 1-20 keV flux, the spectrum steepens. This result strengthens the idea that the presence of a strong blackbody emission (most likely originating from the surface of the compact object) may be responsible for the quenching of the high-energy emission in high-luminosity neutron star systems. On the other hand, the same data show also that when the blackbody component contributes, less than similar to 10%, it does not affect the high-energy emission of the system. The EXOSAT results may also account for the fact that 4U 0614+091 was previously detected by HEAO 1 A-4 up to 80 keV, when the source was probably in a very low state. Both the HEAO 1 A-4 and EXOSAT results add support to the hypothesis that X-ray bursters emit low-flux, hard X-ray tails when they reach low-intensity states. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP BARRET, D (reprint author), CTR ETUD SPATIALE RAYONNEMENTS,9 AV COLONEL ROCHE,BP 4346,F-31029 TOULOUSE,FRANCE. NR 26 TC 17 Z9 17 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 FEB 20 PY 1995 VL 440 IS 2 BP 841 EP 846 DI 10.1086/175320 PN 1 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG505 UT WOS:A1995QG50500036 ER PT J AU BLOEMHOF, EE DANEN, RM AF BLOEMHOF, EE DANEN, RM TI DIRECT MEASUREMENT OF THE INNER RADIUS OF THE DUST SHELL AROUND THE COOL SUPERGIANT STAR ALPHA-SCORPII SO ASTROPHYSICAL JOURNAL LA English DT Article DE CIRCUMSTELLAR MATTER; INFRARED, STARS; STARS, INDIVIDUAL (ALPHA SCORPII); STARS, LATE-TYPE ID MASS-LOSS; GRAINS AB We have measured high-precision 10 mu m image profiles of the supergiant star a Scorpii using a scanned linear array on a 3 m telescope. These image profiles have high signal-to-noise ratio and so can be used to study circumstellar structure with spatial resolution at and slightly finer than the diffraction limit of the telescope, FWHM similar to 0 ''.7. We find the inner radius of the dust shell to be about 0 ''.6, or 110 AU. At this circumstellar radius, the temperature of the dust is very low compared to the temperature at which silicate grains evaporate, indicating that grain condensation is impeded compared to equilibrium conditions if the dust shell morphology is constant in time. In this picture, grains may grow to a relatively large size soon after condensation. Alternatively, this large temperature discrepancy may suggest that dust formation is episodic, and the shell that we observed was originally formed closer to the star but has moved outward with the general circumstellar outflow of gas. In either case, for most published values of the mass-loss rate, our data can be used to argue that circumstellar dust grains around alpha Sco are predominantly large in size, so the size distribution seen in the general interstellar medium is not present at the time of grain formation. C1 UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106. RP BLOEMHOF, EE (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 22 TC 7 Z9 7 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 FEB 20 PY 1995 VL 440 IS 2 BP L93 EP L96 DI 10.1086/187769 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QG508 UT WOS:A1995QG50800016 ER PT J AU JOHNSON, DG JUCKS, KW TRAUB, WA CHANCE, KV AF JOHNSON, DG JUCKS, KW TRAUB, WA CHANCE, KV TI SMITHSONIAN STRATOSPHERIC FAR-INFRARED SPECTROMETER AND DATA REDUCTION SYSTEM SO JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES LA English DT Article ID THERMAL EMISSION-SPECTRA; SINGLE-AXIS PLATFORM; DIPOLE-MOMENT; HF; CALIBRATION; CONSTANTS; REGION; LINES; HCL AB The Smithsonian far-infrared spectrometer is a remote sensing Fourier transform spectrometer that measures the mid- and far-infrared thermal emission spectrum of the stratosphere from balloon and aircraft platforms. The spectrometer has had nine successful balloon flights from 1987 to 1994, flying at float altitudes of 36-39 km and collecting 131 hours of midlatitude stratospheric limb spectra. The spectrometer also flew on a NASA DC-8 aircraft, as part of the second Airborne Arctic Stratospheric Expedition (AASE-II), collecting 140 hours of overhead spectra at latitudes ranging from the equator to the north pole. We present here a brief description of the instrument, a discussion of data reduction procedures, an estimation of both random and systematic errors, an outline of the procedure for retrieving mixing ratio profiles, and an explanation of the method of deriving temperature and pressure from the far- and mid-infrared spectra. RP JOHNSON, DG (reprint author), SMITHSONIAN ASTROPHYS OBSERVAT, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. RI Johnson, David/F-2376-2015; OI Johnson, David/0000-0003-4399-5653; Chance, Kelly/0000-0002-7339-7577 NR 37 TC 78 Z9 78 U1 0 U2 0 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 FEB 20 PY 1995 VL 100 IS D2 BP 3091 EP 3106 DI 10.1029/94JD02685 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA QJ630 UT WOS:A1995QJ63000029 ER PT J AU SONG, JK PARENTI, LR AF SONG, JK PARENTI, LR TI CLEARING AND STAINING WHOLE FISH SPECIMENS FOR SIMULTANEOUS DEMONSTRATION OF BONE, CARTILAGE, AND NERVES SO COPEIA LA English DT Article ID SUDAN BLACK-B; ORGANIZATION; VERTEBRATES AB Comparative anatomical studies of nerves alone, or combined with those of bone and cartilage, are rare in ichthyology because of lack of a reliable, repeatable protocol for preparing specimens that demonstrate all three character systems. We present a method for enzyme clearing and staining whole fish specimens for simultaneous demonstration of bone, cartilage, and nerves. Nerves are stained dark blue with Sudan Black B following alcian blue-alizarin red S staining. Our protocol for Sudan Black B staining differs from others in concentration of Sudan Black B solution, length of time in that solution, and method of differentiation. RP SONG, JK (reprint author), NATL MUSEUM NAT HIST, SMITHSONIAN INST, DIV FISHES, NHB, MRC 159, WASHINGTON, DC 20560 USA. NR 17 TC 93 Z9 111 U1 3 U2 9 PU AMER SOC ICHTHYOLOGISTS & HERPETOLOGISTS PI MIAMI PA MAUREEN DONNELLY, SECRETARY FLORIDA INT UNIV BIOLOGICAL SCIENCES, 11200 SW 8TH STREET, MIAMI, FL 33199 USA SN 0045-8511 EI 1938-5110 J9 COPEIA JI Copeia PD FEB 15 PY 1995 IS 1 BP 114 EP 118 PG 5 WC Zoology SC Zoology GA QH372 UT WOS:A1995QH37200012 ER PT J AU RILEY, S AF RILEY, S TI BANANA ROSE - GOLDBERG,N SO LIBRARY JOURNAL LA English DT Book Review RP RILEY, S (reprint author), SMITHSONIAN INST LIBS,WASHINGTON,DC, 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 FEB 15 PY 1995 VL 120 IS 3 BP 180 EP 181 PG 2 WC Information Science & Library Science SC Information Science & Library Science GA QG429 UT WOS:A1995QG42900174 ER PT J AU RYBICKI, GB PRESS, WH AF RYBICKI, GB PRESS, WH TI CLASS OF FAST METHODS FOR PROCESSING IRREGULARLY SAMPLED OR OTHERWISE INHOMOGENEOUS ONE-DIMENSIONAL DATA SO PHYSICAL REVIEW LETTERS LA English DT Article ID GRAVITATIONAL LENS 0957+561; TIME-DELAY RP RYBICKI, GB (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 12 TC 32 Z9 32 U1 0 U2 1 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 FEB 13 PY 1995 VL 74 IS 7 BP 1060 EP 1063 DI 10.1103/PhysRevLett.74.1060 PG 4 WC Physics, Multidisciplinary SC Physics GA QG472 UT WOS:A1995QG47200005 ER PT J AU RAYMOND, JC MAUCHE, CW BOWYER, S HURWITZ, M AF RAYMOND, JC MAUCHE, CW BOWYER, S HURWITZ, M TI ORFEUS OBSERVATIONS OF AM HERCULIS SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, CLOSE; STARS, INDIVIDUAL (AM HERCULIS); STARS, MAGNETIC FIELDS; ULTRAVIOLET, STARS; WHITE DWARFS ID HOPKINS ULTRAVIOLET TELESCOPE; WHITE-DWARF; MAGNETIC-FIELD; STARS; MODELS; EVOLUTION; SYSTEMS; ENERGY AB The ORFEUS telescope has observed AM Her in its high optical state at high spectral resolution in the 912-1176 A band. Spectra at two phases show O VI emission lines with a broad and narrow component structure similar to that of the optical emission lines. We find that the O VI lines are optically thick, and that the densities in the broad- and narrow-component regions differ by a factor of 100. The most puzzling aspect of the observations is the continuum, which is softer than expected, but does not show definite Lyman absorption lines. We discuss the implications for the ''soft X-ray excess'' of AM Her stars. C1 LAWRENCE LIVERMORE NATL LAB,EXPTL ASTROPHYS LAB,LIVERMORE,CA 94550. UNIV CALIF BERKELEY,CTR EUV ASTROPHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. RP RAYMOND, JC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 42 TC 18 Z9 18 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 FEB 10 PY 1995 VL 440 IS 1 BP 331 EP 335 DI 10.1086/175274 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QE505 UT WOS:A1995QE50500033 ER PT J AU ZUO, M SMITH, SJ CHUTJIAN, A WILLIAMS, ID TAYAL, SS MCLAUGHLIN, BM AF ZUO, M SMITH, SJ CHUTJIAN, A WILLIAMS, ID TAYAL, SS MCLAUGHLIN, BM TI ELECTRON-EXCITATION CROSS-SECTION FOR THE 2S(2)2P(3) 4S(DEGREES)-]2S(2)2P(3) 2D(DEGREES) (FORBIDDEN) AND S-4(DEGREES)-]2S2P(4)-4P (RESONANCE) TRANSITIONS IN O-II SO ASTROPHYSICAL JOURNAL LA English DT Article DE ATOMIC PROCESS ID MERGED-BEAMS METHODS; INTERMULTIPLET 1S(2)2S(2)2P(3); COLLISIONAL EXCITATION; OPACITY CALCULATIONS; ATOMIC OXYGEN; ENERGY-LOSS; IO-TORUS; SPECTROSCOPY; 1S(2)2S2P(4); STRENGTHS AB Experimental and theoretical excitation cross sections are reported for the first forbidden transition S-4(0) --> 2S(2)2p(3 2) D-0 (lambda lambda 3726, 3729) and the first allowed (resonance) transition S-4(0) --> 2s2p(4 4) P (lambda 833) in O II. Use is made of electron energy loss and merged-beams methods. The electron energy range covered is 3.33 (threshold) to 15 eV for the S --> D transition, and 14.9 (threshold) to 40 eV for the S --> P transition. Care was taken to assess and minimize the metastable fraction of the O II beam. An electron mirror was designed and tested to reflect inelastically backscattered electrons into the forward direction to account for the full range of polar scattering angles. Comparisons are made between present experiments and 11-state R-matrix calculations. Calculations are also presented for the S-4(0) --> 2S(2)2p(3) P-2(0) (lambda 2470) transition. C1 QUEENS UNIV BELFAST,DEPT PURE & APPL PHYS,BELFAST BT7 1NN,ANTRIM,NORTH IRELAND. CALTECH,JET PROP LAB,PASADENA,CA 91109. CLARK ATLANTA UNIV,DEPT PHYS,ATLANTA,GA 30314. CLARK ATLANTA UNIV,CTR THEORET STUDIES PHYS SYST,ATLANTA,GA 30314. HARVARD SMITHSONIAN CTR ASTROPHYS,INST THEORET ATOM & MOLEC PHYS,CAMBRIDGE,MA 02138. NR 38 TC 20 Z9 20 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 FEB 10 PY 1995 VL 440 IS 1 BP 421 EP 429 DI 10.1086/175284 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QE505 UT WOS:A1995QE50500043 ER PT J AU LAHAV, O NAIM, A BUTA, RJ CORWIN, HG DEVAUCOULEURS, G DRESSLER, A HUCHRA, JP VANDENBERGH, S RAYCHAUDHURY, S SODRE, L STORRIE-LOMBARDI, MC AF LAHAV, O NAIM, A BUTA, RJ CORWIN, HG DEVAUCOULEURS, G DRESSLER, A HUCHRA, JP VANDENBERGH, S RAYCHAUDHURY, S SODRE, L STORRIE-LOMBARDI, MC TI GALAXIES, HUMAN EYES, AND ARTIFICIAL NEURAL NETWORKS SO SCIENCE LA English DT Article ID MORPHOLOGICAL CLASSIFICATION AB The quantitative morphological classification of galaxies is important for understanding the origin of type frequency and correlations with environment. However, galaxy morphological classification is still mainly done visually by dedicated individuals, in the spirit of Hubble's original scheme and its modifications. The rapid increase in data on galaxy images at low and high redshift calls for a re-examination of the classification schemes and for automatic methods. Here are shown results from a systematic comparison of the dispersion among human experts classifying a uniformly selected sample of more than 800 digitized galaxy images. These galaxy images were then classified by six of the authors independently. The human classifications are compared with each other and with an automatic classification by an artificial neural network, which replicates the classification by a human expert to the same degree of agreement as that between two human experts. C1 UNIV ALABAMA, DEPT PHYS & ASTRON, TUSCALOOSA, AL 35487 USA. CALTECH, PASADENA, CA 91125 USA. UNIV TEXAS, DEPT ASTRON, AUSTIN, TX 78712 USA. CARNEGIE INST WASHINGTON OBSERV, PASADENA, CA 91101 USA. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. DOMINION ASTROPHYS OBSERV, VICTORIA, BC V8X 4M6, CANADA. UNIV SAO PAULO, INST ASTRON & GEOFIS, BR-01065 SAO PAULO, BRAZIL. RP LAHAV, O (reprint author), UNIV CAMBRIDGE, INST ASTRON, MADINGLEY RD, CAMBRIDGE CB3 0HA, ENGLAND. RI Sodre, Laerte/P-6045-2016 OI Sodre, Laerte/0000-0002-3876-268X NR 24 TC 67 Z9 68 U1 0 U2 4 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD FEB 10 PY 1995 VL 267 IS 5199 BP 859 EP 862 DI 10.1126/science.267.5199.859 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QG207 UT WOS:A1995QG20700050 PM 17813914 ER PT J AU GOULD, RR AF GOULD, RR TI THE SPIN-STATISTICS THEOREM - REPLY SO AMERICAN JOURNAL OF PHYSICS LA English DT Letter RP GOULD, RR (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,DEPT SCI EDUC,CAMBRIDGE,MA 02138, USA. NR 5 TC 9 Z9 9 U1 0 U2 2 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 FEB PY 1995 VL 63 IS 2 BP 109 EP 109 DI 10.1119/1.17964 PG 1 WC Education, Scientific Disciplines; Physics, Multidisciplinary SC Education & Educational Research; Physics GA QC791 UT WOS:A1995QC79100011 ER PT J AU HUTTEMEISTER, S WILSON, TL MAUERSBERGER, R LEMME, C DEHMEN, G HENKEL, C AF HUTTEMEISTER, S WILSON, TL MAUERSBERGER, R LEMME, C DEHMEN, G HENKEL, C TI A MULTILEVEL STUDY OF AMMONIA IN STAR-FORMING REGIONS .6. THE ENVELOPE OF SAGITTARIUS-B2 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE GALAXY, CENTER; ISM, ABUNDANCES; ISM, INDIVIDUAL OBJECTS, SGRB2; ISM, MOLECULES; RADIO LINES, ISM ID MOLECULAR CLOUD; MILLIMETER-WAVE; HOT AMMONIA; ORION-KL; B2; LINE; EMISSION; SIO; CONTINUUM; GAS AB Measurements of seven metastable NH3 inversion transitions with (J,K) = (8,8), (9,9), (10,10), (11,11), (12,12), (13,13) and (14,14) are presented. These lines arise from energy levels between approximately 600 K and approximately 2000 K above the ground state, and are found in absorption toward the HII regions SgrB2(M) and (N) at epsilon(LSR)'s between approximately 60 and approximately 82 km s-1. Toward SgrB2(N), there is absorption at epsilon(LSR) approximately 0 km s-1 also. The metastable (J = K) inversion lines are collisionally excited, and an analysis indicates that kinetic temperatures are >600 K. The doublet levels are very subthermally excited, with excitation temperatures < 10 K. Thus, these lines must arise from the low density, n(H2)<5 10(3) cm-3, extended envelope of SgrB2. In addition, we have measured absorption spectra for the epsilon = 0, J = 1 - 0 transition of SiO and the J = 4 - 3 transition of HC3N toward both sources. The absorptions are seen at epsilon(LSR)'s of approximately 0, and between 60 and 85 km s-1, although the HC3N absorption SgrB2(N) is weak and blended with emission. LVG analyses of SiO and the HC3N data are consistent with H2 densities < 5000 cm-3. Both the NH3 and SiO results are consistent with heating by C shocks. These data strongly indicate that the epsilon(LSR) approximately 0 km s-1 component is located close to the galactic center. C1 HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. MAX PLANCK INST RADIOASTRON, D-53121 BONN, GERMANY. NR 37 TC 52 Z9 52 U1 0 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD FEB PY 1995 VL 294 IS 3 BP 667 EP 676 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ325 UT WOS:A1995QJ32500009 ER PT J AU FIELD, GB TOZZI, GP STANGA, RM AF FIELD, GB TOZZI, GP STANGA, RM TI DUST AS THE CAUSE OF SPOTS ON JUPITER SO ASTRONOMY & ASTROPHYSICS LA English DT Letter DE COMETS, INDIVIDUAL, SHOEMAKER; LEVY-9; PLANETS AND SATELLITES, INDIVIDUAL, JUPITER AB The long-lived spots caused by the impact of fragments of Comet S-L 9 on Jupiter can be understood if clouds of dust are produced by the impact. These clouds reside in the stratosphere, where they absorb visible light that would ordinarily reflect from the cloud deck below, and reflect radiation at infrared wavelengths that would ordinarily be absorbed by atmospheric methane. Here we show that, provided that the nucleus of a fragment is composed substantially of silicates and has a diameter greater than about 0.4 km, dust in the required amounts will condense from the hot gas composed of cometary and Jovian material ejected from the site where the fragment entered, and the dust will be suspended in the stratosphere for long periods. Particles about 1 mum in radius can explain both the optical properties and longevities of the spots. According to our model, a silicate band should be present in the 10 - mum spectra of the spots. C1 UNIV FLORENCE, DIPARTIMENTO ASTRON, I-50125 FLORENCE, ITALY. OSSERV ASTROFIS ARCETRI, I-50125 FLORENCE, ITALY. RP FIELD, GB (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 12 TC 6 Z9 6 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD FEB PY 1995 VL 294 IS 3 BP L53 EP L55 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QJ325 UT WOS:A1995QJ32500004 ER PT J AU COOL, AM GRINDLAY, JE COHN, HN LUGGER, PM SLAVIN, SD AF COOL, AM GRINDLAY, JE COHN, HN LUGGER, PM SLAVIN, SD TI DISCOVERY OF CANDIDATE CATACLYSMIC VARIABLES IN THE POST-CORE-COLLAPSE GLOBULAR-CLUSTER NGC-6397 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GLOBULAR CLUSTERS, INDIVIDUAL, (NGC 6397); NOVAE, CATACLYSMIC VARIABLES; STARS, EMISSION-LINE, BE; X-RAYS, STARS ID X-RAY SOURCES; HUBBLE SPACE TELESCOPE; FIELD PLANETARY CAMERA; WHITE-DWARF BINARIES; OMEGA-CENTAURI; PHOTOMETRY; EMISSION; STARS; REDUCTION AB A photometric search for objects with H alpha emission lines in the globular cluster NGC 6397 has been carried out with the Hubble Space Telescope (HST) Planetary Camera. Images were obtained through the F675W (similar to Johnson R) and F656N (H alpha) filters, and photometry carried out on similar to 900 stars detected in the central similar to 38'' x 35'' of the cluster. Limiting magnitudes of R similar to 21 and 19.5 were reached in the F675W and F656N images, respectively. Three H alpha-bright stars are found which have apparent magnitudes in the range R = 17.8-19.5. The corresponding absolute magnitudes (M(R) = 5.6-7.3) and inferred H alpha emission-line strengths (EW[H alpha]) greater than or similar to 15-26 Angstrom) make these objects good candidates to be cataclysmic variables (CVs) in this nearby, post-core-collapse cluster. All three H alpha-bright objects are found to be UV-bright in a photometric comparison of the F675W images with archival HST Faint Object Camera images of the cluster center through the F220W and F346M filters. Such UV excesses further support the identification of these objects as candidates to be CVs in the cluster. The H alpha-bright stars are within the error circles of three X-ray sources previously found with the ROSAT HRI and are likely to be the dominant source of the X-ray emission. The implied X-ray to optical flux ratios (f(x)/f(v) similar to 0.8-4.2) are consistent with CVs known elsewhere in the Galaxy. Two additional stars with possible Ha emission are also discussed, along with stars identified on the basis of UV emission. Preliminary completeness estimates suggest that these observations should be sensitive to approximately one-third to two-thirds of most varieties of CVs in the cluster, and that therefore greater than or similar to 5-10 CVs are likely to be present in the observed section of NGC 6397. Scaling these numbers to the cluster as a whole would increase these numbers by up to a factor of 2. A total CV population on the order of 5-20 is in reasonable agreement with previous estimates made on the basis of X-ray observations, and with theoretical predictions scaled to this cluster. C1 NATL OPT ASTRON OBSERV, CERRO TOLOLO INTER AMER OBSERV, LA SERENA, CHILE. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. INDIANA UNIV, DEPT ASTRON, BLOOMINGTON, IN 47405 USA. RP COOL, AM (reprint author), UNIV CALIF BERKELEY, DEPT ASTRON, 601 CAMPBELL HALL, BERKELEY, CA 94720 USA. NR 71 TC 66 Z9 66 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD FEB 1 PY 1995 VL 439 IS 2 BP 695 EP + DI 10.1086/175209 PN 1 PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD405 UT WOS:A1995QD40500019 ER PT J AU SEWARD, FD VELUSAMY, T AF SEWARD, FD VELUSAMY, T TI A ROSAT OBSERVATION OF THE SUPERNOVA REMNANT KES-79 SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (KES 79); SUPERNOVA REMNANTS; X-RAYS, ISM ID X-RAY OBSERVATIONS; EVOLUTION; G33.6+0.1 AB Kes 79 was observed with the ROSAT PSPC and HRI. Some X-ray emission comes from a faint outer region, well correlated with the outer shell. Most emission is from a bright diffuse inner region where there are also bright radio filaments. The X-fay spectrum is fitted with a thermal model with temperature 1.3 keV. Variations in spectra from different regions are small. There is no X-ray evidence for an internal neutron star. Remnant characteristics are derived using a simple blast-wave model. The observed X-ray absorption is less than expected. It is possible that the remnant is closer than the published distance of 10 kpc. C1 CALTECH,JET PROP LAB,PASADENA,CA 91109. RP SEWARD, FD (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 13 TC 12 Z9 12 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 FEB 1 PY 1995 VL 439 IS 2 BP 715 EP 721 DI 10.1086/175211 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD405 UT WOS:A1995QD40500021 ER PT J AU LADD, EF FULLER, GA PADMAN, R MYERS, PC ADAMS, FC AF LADD, EF FULLER, GA PADMAN, R MYERS, PC ADAMS, FC TI SPATIALLY-RESOLVED SUBMILLIMETER CONTINUUM EMISSION TOWARD L1551-IRS-5 SO ASTROPHYSICAL JOURNAL LA English DT Article DE INFRARED, ISM, CONTINUUM; ISM, INDIVIDUAL (L1551 IRS 5); ISM, JETS AND OUTFLOWS STARS, PRE-MAIN-SEQUENCE ID HIGH-RESOLUTION IMAGES; YOUNG STELLAR OBJECTS; BIPOLAR OUTFLOW; DENSE CORES; DARK CLOUDS; DISK AB We present high signal-to-noise ratio 16''-20'' resolution submillimeter continuum images of the embedded young stellar object L1551 IRS 5. The images are dominated by a compact source at the position of IRS 5, which has a deconvolved size of 10''+/-3''. Low-level emission extends up to 5000 A.U. from IRS 5 and is distributed nonaxisymetrically. The 1100 mu m emission is extended in the north-south direction and is elliptical in shape. In contrast, our 730 pm map shows emission in a cross-shaped pattern, with arms extending to the north, south, east, and west of IRS 5. The cross emission is not an artifact of our observational methods but rather is intrinsic to the source distribution. We model the submillimeter continuum emission at 1100 pm and 730 pm using three components: an unresolved point source; a cold (similar to 12 K), massive (similar to 1 M.), smoothly distributed envelope; and a warm (greater than or similar to 50 K), less massive (less than or similar to 0.02 M.) ''cross'' centered at the position of IRS 5. We note that the arms of the cross are well aligned with the edges of the CO outflow from IRS 5 and suggest that they may consist of core material warmed and pushed aside by the energetically dominant outflow. C1 UNIV HAWAII,INST ASTRON,HONOLULU,HI 96822. NATL RADIO ASTRON OBSERV,TUCSON,AZ 85721. CAVEVDISH LAB,MULLARD RADIO ASTRON OBSERV,CAMBRIDGE CB3 0HE,ENGLAND. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109. NR 26 TC 23 Z9 23 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 FEB 1 PY 1995 VL 439 IS 2 BP 771 EP 778 DI 10.1086/175215 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD405 UT WOS:A1995QD40500025 ER PT J AU ZACCHEO, TS GONSALVES, RA EBSTEIN, SM NISENSON, P AF ZACCHEO, TS GONSALVES, RA EBSTEIN, SM NISENSON, P TI ESTIMATING THE CRAMER-RAO BOUND FOR RESTORED ASTRONOMICAL OBSERVATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, PHOTOMETRY; METHODS, STATISTICAL; STARS, IMAGING TECHNIQUES, IMAGE PROCESSING AB This work addresses the problem of assigning confidence intervals to estimated photometry data obtained from astronomical observations. The proposed solution is to estimate the Cramer-Rao bound, which is an analytical expression that describes the minimum obtainable mean square error associated with a given estimate of a parameter. This Letter presents a compact and simple form for the bound associated with a linear estimator such as a Wiener filter estimator. A prescription for estimating the variance associated with each element in a restored object was developed using an analytical model for observed data corrupted by either Poisson or Gaussian noise. Both one- and two-dimensional examples are presented. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02128. RP ZACCHEO, TS (reprint author), TUFTS UNIV,DEPT ELECT ENGN,MEDFORD,MA 02155, USA. NR 7 TC 4 Z9 4 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 FEB 1 PY 1995 VL 439 IS 2 BP L43 EP L45 DI 10.1086/187740 PN 2 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD407 UT WOS:A1995QD40700004 ER PT J AU BARSONY, M SASSELOV, D RUCINSKI, S BLOEMHOF, E NYMAN, LA AF BARSONY, M SASSELOV, D RUCINSKI, S BLOEMHOF, E NYMAN, LA TI THE DENSEST PRESTELLAR CONDENSATIONS - H2CO STUDIES OF RHO-OPH B1 SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE STAR FORMATION; PRE-STELLAR CORES; FORMALDEHYDE ID FORMALDEHYDE; CLOUD AB The rho Oph B1 cloud core region is unique in that it exhibits 2-cm H2CO line emission over a substantial area (indicating gas densities greater than or equal to 10(6) cm(-3)), while lacking any known embedded infrared sources. Subsequent H2CO studies at the VLA and the JCMT have not provided a consistent model of the gas structure and kinematics. Here, we present the first high-velocity resolution maps in the 218 GHz and 352 GHz transitions of H2CO. Our multi-transition study, at velocity and spatial resolutions comparable to existing VLA data, has proven crucial to forming a coherent picture of the gas kinematics. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. INST SPACE & TERR SCI,TORONTO,ON,CANADA. RP BARSONY, M (reprint author), UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92521, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 51 EP 54 DI 10.1007/BF00667820 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700011 ER PT J AU DEUTSCH, LK HORA, JL BUTNER, HM HOFFMANN, WF FAZIO, GG AF DEUTSCH, LK HORA, JL BUTNER, HM HOFFMANN, WF FAZIO, GG TI EXTENDED STRUCTURES AROUND YSO IN MID-IR BROAD EMISSION FEATURES SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE YOUNG STELLAR OBJECTS, INDIVIDUAL (WL 16); HERBIG AE/BE STARS, INDIVIDUAL (TY CRA, MWC 1080); YOUNG STELLAR OBJECTS, GENERAL; YOUNG STELLAR OBJECTS, INFRARED AB We present high-spatial-resolution, mid-IR images of young stellar objects (YSO). Images were obtained with MIRAC (Mid-InfraRed Array Camera) at wavelengths of grain continuum and feature emission near 10 and 20 mu m. Three of the objects observed (WL 16, TY CrA and MWC 1080) show structure and extended emission (on the order of 1200 AU or greater) at wavelengths of the UIR (Unidentified InfraRed) emission features. Mid-IR imaging of other sources in these clouds which do not exhibit UIR features (ELias 29 and R CrA) shows these sources to be point-libe. We have produced morphological models based on the mid-IR images for the observed extended structures. C1 INST ASTRON,HONOLULU,HI 96822. CARNEGIE INST WASHINGTON,DEPT TERR MAGNETISM,WASHINGTON,DC 20015. UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RP DEUTSCH, LK (reprint author), UNIV MASSACHUSETTS,FCAD,AMHERST,MA 01003, USA. OI Butner, Harold/0000-0003-4899-2064; Hora, Joseph/0000-0002-5599-4650 NR 4 TC 11 Z9 11 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 89 EP 92 DI 10.1007/BF00667828 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700019 ER PT J AU WOOD, DOS MYERS, PC AF WOOD, DOS MYERS, PC TI AN IRAS ATLAS OF YSOS IN NEARBY DARK CLOUDS SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE INFRARED; DUST; DARK CLOUDS; YOUNG STELLAR OBJECTS ID CHAMELEON AB We are using the new IRAS Sky Survey Atlas to construct a catalog of Galactic dark clouds and their associated Young Stellar Objects (YSOs). From IRAS 100 and 60 mu m data we calculate images of the 100 mu m optical depth distribution in the clouds. Using the IRAS Faint Source Catalog we identify sources which have colors indicative of YSOs and have positions that lie inside cloud boundaries in the optical depth images. Here we present some preliminary results of applying this analysis to the Chamaeleon dark cloud complex. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP WOOD, DOS (reprint author), NATL RADIO ASTRON OBSERV,POB O,SOCORRO,NM 87801, USA. NR 5 TC 1 Z9 1 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 199 EP 202 DI 10.1007/BF00667845 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700036 ER PT J AU HORA, JL DEUTSCH, LK HOFFMANN, WF FAZIO, GG AF HORA, JL DEUTSCH, LK HOFFMANN, WF FAZIO, GG TI THE MIDINFRARED STRUCTURE OF THE BIPOLAR NEBULAE AFGL-915, AFGL-618, AND AFGL-2688 SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE PLANETARY NEBULAE, INDIVIDUAL (AFGL 915, AFGL 618, AFGL 2688); PLANETARY NEBULAE, GENERAL; PLANETARY NEBULAE, INFRARED AB We have obtained near diffraction-limited images of three bipolar PPN at UKIRT in October, 1993: AFGL 915 (the ''Red Rectangle''), AFGL 618, and AFGL 2688 (the ''Egg Nebula''). Images were taken at unidentified infrared (UIR) emission feature wavelengths and at several continuum wavelengths in the 10 and 20 mu m atmospheric windows. In all three PPN the emission is dominated by a central point source with fainter emission extending for several arcsec. In AFGL 2688, the mid-IR emission is extended in the same direction as the main optical lobes. In AFGL 915, the UIR feature emission is spatially separated from the central source. The ''spikes'' that have been observed at 2 mu m and give the nebula its rectangular appearance are also visible at 10 mu m. C1 UNIV MASSACHUSETTS,FCAD,AMHERST,MA 01003. UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RP HORA, JL (reprint author), UNIV HAWAII,INST ASTRON,2680 WOODLAWN DR,HONOLULU,HI 96822, USA. OI Hora, Joseph/0000-0002-5599-4650 NR 9 TC 1 Z9 1 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 361 EP 364 DI 10.1007/BF00667872 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700061 ER PT J AU GREENHILL, LJ COLOMER, F MORAN, JM BACKER, DC DANCHI, WC BESTER, M AF GREENHILL, LJ COLOMER, F MORAN, JM BACKER, DC DANCHI, WC BESTER, M TI THE SIO MASERS AND DUST SHELL OF VX-SGR SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT International Conference on Circumstellar Matter 1994, Celebrating the Centenary of the Royal-Observatory, Edinburgh CY AUG 29-SEP 02, 1994 CL HERIOT WATT UNIV, RICCARTON, SCOTLAND SP PARTICLE PHYS & ASTRON RES COUNCIL, LOTHIAN & EDINBURGH ENTERPRISE LTD, HERZBERG INST ASTROPHYS, KLUWER ACAD PUBLISHERS LTD, CAMBRIDGE UNIV PRESS, JOHN WILEY & SONS LTD, ROYAL ASTRON SOC HO HERIOT WATT UNIV DE VX SGR; INTERFEROMETRY; MASERS; MASS LOSS; DUST SHELLS AB The circumstellar envelope of the late-type supergiant VX Sagittarii has been studied with VLBI observations of SiO maser emission (J = 1 --> 0 v = 1) and interferometric observations of mid-infrared dust emission. C1 UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. RP GREENHILL, LJ (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Moran, James/0000-0002-3882-4414 NR 7 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 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD FEB PY 1995 VL 224 IS 1-2 BP 469 EP 470 DI 10.1007/BF00667909 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RB007 UT WOS:A1995RB00700094 ER PT J AU FRIEDMAN, RS JAMIESON, MJ AF FRIEDMAN, RS JAMIESON, MJ TI ON JOHNSONS LOG-DERIVATIVE ALGORITHM FOR A SINGLE EQUATION SO COMPUTER PHYSICS COMMUNICATIONS LA English DT Article ID TUNNELING CALCULATIONS; SCATTERING AB Johnson's log-derivative method is presented as a propagator for the log-derivative itself; this propagator is derived in a simple way from the Riccati equation and it is given in a more efficient form. Two numerical examples are given. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV GLASGOW,DEPT COMP SCI,GLASGOW G12 8QQ,LANARK,SCOTLAND. RP FRIEDMAN, RS (reprint author), INDIANA UNIV PURDUE UNIV,DEPT CHEM,FT WAYNE,IN 46805, USA. NR 19 TC 5 Z9 6 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0010-4655 J9 COMPUT PHYS COMMUN JI Comput. Phys. Commun. PD FEB PY 1995 VL 85 IS 2 BP 231 EP 238 DI 10.1016/0010-4655(94)00133-M PG 8 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA QE871 UT WOS:A1995QE87100007 ER PT J AU RAVE, EH AF RAVE, EH TI GENETIC ANALYSES OF WILD POPULATIONS OF HAWAIIAN GEESE USING DNA-FINGERPRINTING SO CONDOR LA English DT Article DE BRANTA SANDVICENSIS; DNA FINGERPRINTING; HAWAIIAN GOOSE; NENE; POPULATION GENETICS ID CONSERVATION; VARIABILITY; DIVERSITY; PARENTAGE; COLONIES AB DNA fingerprinting was used to compare levels of genetic variation among 75 wild Hawaiian Geese, or Nene (Branta sandvicensis), from six populations on the islands of Hawaii, Maul, and Kauai and between the six wild populations and a captive colony of 29 Nene. Mantel tests were used to determine differences in similarity coefficient distributions (amount of genetic similarity among individuals within each population) among wild Nene and between wild and captive Nene. Nene from Hawaii Volcanoes National Park on the island of Hawaii had the lowest similarity coefficient distribution, whereas Nene on Kauai had the highest. Captive birds had an intermediate similarity coefficient distribution when compared to wild populations. No unique DNA fingerprint fragments were found in wild birds when compared to captive birds. Successful recruitment of migrants might have decreased similarity at Hawaii Volcanoes National Park, whereas inbreeding and captive-release techniques might have increased similarity on Kauai. Varying levels of inbreeding or fixation by drift might explain differences in similarity coefficient distributions between wild and captive populations. C1 UNIV N DAKOTA,DEPT BIOL,GRAND FORKS,ND 58202. SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES,WASHINGTON,DC 20008. NR 45 TC 14 Z9 15 U1 0 U2 9 PU COOPER ORNITHOLOGICAL SOC PI LAWRENCE PA ORNITHOLOGICAL SOC NORTH AMER PO BOX 1897, LAWRENCE, KS 66044-8897 SN 0010-5422 J9 CONDOR JI Condor PD FEB PY 1995 VL 97 IS 1 BP 82 EP 90 DI 10.2307/1368985 PG 9 WC Ornithology SC Zoology GA QK938 UT WOS:A1995QK93800008 ER PT J AU STARFIELD, AM ROTH, JD RALLS, K AF STARFIELD, AM ROTH, JD RALLS, K TI MOBBING IN HAWAIIAN MONK SEALS (MONACHUS-SCHAUINSLANI) - THE VALUE OF SIMULATION MODELING IN THE ABSENCE OF APPARENTLY CRUCIAL DATA SO CONSERVATION BIOLOGY LA English DT Article AB Several small populations of Hawaiian monk seals (Monachus schauinslani) exhibit male-biased adult sex ratios and ''mobbing,'' an aggressive behavior in which adult males injure and often kill adult females and immature seals of both sexes during mating attempts Mobbing appears to be limiting the growth of some populations of this endangered species. The frequency of mobbing deaths appears to increase as a population's sex ratio becomes increasingly male-biased although the exact relationship between these two variables (the mobbing response) is unknown We developed a stochastic demographic model of a small Hawaiian monk seal population using several different assumption about the mobbing response. We used the model to explore the origins of male-biased sex ratios in monk seal populations and to determine whether it was possible, given the lack of data on the mobbing response: to evaluate the probable effects of alternative management strategies to address the mobbing problem. Small populations (100 to 200 seals) and those with slower growth rates were more likely to develop male-biased adult sex ratios. Almost all of our modeling scenarios supported the immediate removal of males from populations where mobbing occurs. Our conclusions were relatively unaffected when the assumptions regarding the mobbing respone were varied Thus, a model was helpful even when apparently crucial data were unavailable. C1 SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008. RP STARFIELD, AM (reprint author), UNIV MINNESOTA,DEPT ECOL EVOLUT & BEHAV,ST PAUL,MN 55108, USA. RI Roth, James/N-4178-2016 NR 17 TC 20 Z9 21 U1 0 U2 11 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0888-8892 J9 CONSERV BIOL JI Conserv. Biol. PD FEB PY 1995 VL 9 IS 1 BP 166 EP 174 DI 10.1046/j.1523-1739.1995.09010166.x PG 9 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA QK394 UT WOS:A1995QK39400018 ER PT J AU RALLS, K STARFIELD, AM AF RALLS, K STARFIELD, AM TI CHOOSING A MANAGEMENT STRATEGY - 2 STRUCTURED DECISION-MAKING METHODS FOR EVALUATING THE PREDICTIONS OF STOCHASTIC SIMULATION-MODELS SO CONSERVATION BIOLOGY LA English DT Article ID CONSERVATION; POPULATIONS AB We describe two structured decision-making methods-one using a hierarchy of goals and a second using ranking on the sum of weighted criteria-that may be useful for many practical conservation problems, particularly when advisory groups evaluate the output of simulation models. We illustrate both methods by applying them to the problem of choosing a management strategy to address the ''mobbing''problem in endangered Hawaiian monk seals. Both methods require estimates of the probabilities of various outcomes, such as a population size of more than 400 seals after 20 years under a specific management regime. We used a simulation model of a small monk seal population to generate these probabilities. Both methods Provide an explicit well-documented and reproducible decision process that helps justify the decision Furthermore they are easy for those untrained in decision analysis to understand and use they focus discussion on management objectives, they facilitate an examination of trade-offs in the light of multiple and sometimes conflicting objectives they are suitable for use in workshops, and, at least in our example, they lead to management recommendations that are not highly sensitive to minor changes in probability estimates or other factors. C1 UNIV MINNESOTA,DEPT ECOL EVOLUT & BEHAV,ST PAUL,MN 55108. RP RALLS, K (reprint author), SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008, USA. NR 21 TC 35 Z9 35 U1 1 U2 9 PU BLACKWELL SCIENCE PUBL INC CAMBRIDGE PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0888-8892 J9 CONSERV BIOL JI Conserv. Biol. PD FEB PY 1995 VL 9 IS 1 BP 175 EP 181 DI 10.1046/j.1523-1739.1995.09010175.x PG 7 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA QK394 UT WOS:A1995QK39400019 ER PT J AU BAUMANN, PC HARSHBARGER, JC AF BAUMANN, PC HARSHBARGER, JC TI DECLINE IN LIVER NEOPLASMS IN WILD BROWN BULLHEAD CATFISH AFTER COKING PLANT CLOSES AND ENVIRONMENTAL PAHS PLUMMET SO ENVIRONMENTAL HEALTH PERSPECTIVES LA English DT Article DE BROWN BULLHEAD CATFISH; CANCER; CATFISH; NEOPLASM; POLYCYCLIC AROMATIC HYDROCARBONS; REMEDIATION; SEDIMENT ID POLYCYCLIC AROMATIC-COMPOUNDS; TUMOR FREQUENCIES; PUGET-SOUND; GREAT-LAKES; TRIBUTARIES; SEDIMENT; FISH; EPIZOOTIOLOGY; INFERENCE AB Polycyclic aromatic hydrocarbons (PAHs) in both sediment and brown bullhead catfish tissues from the Black River in Lorain County, Ohio, declined by 65% and 93%, respectively, between 1980 and 1982. Sediment PAHs declined in additional 99% by 1987, coincident with the closure of a coking facility in 1983. Contemporaneously, liver cancer in 3- to 4-year-old brown bullheads declined to about one-quater the 1982 frequency (10% versus 39%) by 1987, while the percentage of livers without any proliferative lesions doubled (42% versus 20%). These changes were significant within age group. Our data affirm a cause-and-effect relationship between PAH exposure and liver cancer in wild fish. The data also support the efficacy of natural, unassisted remediation once the source of the pollution is eliminated. C1 OHIO STATE UNIV,NATL BIOL SURVEY,LSC FIELD RES STN,COLUMBUS,OH 43210. SMITHSONIAN INST,NATL MUSEUM AMER HIST,REGISTRY TUMORS LOWER ANIM,WASHINGTON,DC 20560. FU CIT NIH HHS [N01-CT-15641]; NCI NIH HHS [N01-CP-15641] NR 21 TC 74 Z9 78 U1 1 U2 4 PU NATL INST ENVIRON HEALTH SCI PI RES TRIANGLE PK PA PO BOX 12233, RES TRIANGLE PK, NC 27709 SN 0091-6765 J9 ENVIRON HEALTH PERSP JI Environ. Health Perspect. PD FEB PY 1995 VL 103 IS 2 BP 168 EP 170 DI 10.2307/3432273 PG 3 WC Environmental Sciences; Public, Environmental & Occupational Health; Toxicology SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Toxicology GA RF453 UT WOS:A1995RF45300015 PM 7737065 ER PT J AU DALLING, JW SWAINE, MD GARWOOD, NC AF DALLING, JW SWAINE, MD GARWOOD, NC TI EFFECT OF SOIL DEPTH ON SEEDLING EMERGENCE IN TROPICAL SOIL SEED-BANK INVESTIGATIONS SO FUNCTIONAL ECOLOGY LA English DT Article DE GERMINATION; METHODOLOGY; PANAMA; SEEDLING EMERGENCE AB 1. Investigations of tropical soil seed banks have reported large differences in apparent seed densities based on seedling emergence from soil set out under gap conditions. To examine to what extent these differences might reflect different methodologies rather than actual differences in seed density, soil samples of different depths were laid out in germination trays. 2. There was a marked effect of soil depth on total seedling emergence. Germination trays containing soil layers of greater-than-or-equal-to 10 mm markedly underestimated total seed density. Relative abundance of species in the samples did not alter with depth. Almost all seedling emergence occurred within the first 6 weeks for all soil depths. 3. It is recommended that future tropical soil seed-bank investigations should spread soil to less-than-or-equal-to 5 mm. This should not restrict the sample sizes used in seed-bank investigations as rapid germination from shallow soils allows rapid turnover of samples. C1 NAT HIST MUSEUM,LONDON SW7 5BD,ENGLAND. UNIV ABERDEEN,DEPT PLANT & SOIL SCI,ABERDEEN AB9 2UD,SCOTLAND. RP DALLING, JW (reprint author), SMITHSONIAN TROP RES INST,APARTADO 2072,BALBOA,PANAMA. NR 8 TC 20 Z9 20 U1 2 U2 7 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0269-8463 J9 FUNCT ECOL JI Funct. Ecol. PD FEB PY 1995 VL 9 IS 1 BP 119 EP 121 DI 10.2307/2390098 PG 3 WC Ecology SC Environmental Sciences & Ecology GA QU470 UT WOS:A1995QU47000015 ER PT J AU MARVIN, UB AF MARVIN, UB TI METEORITICS SO GEOTIMES LA English DT Article RP MARVIN, UB (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOLOGICAL INST PI ALEXANDRIA PA 4220 KING ST, ALEXANDRIA, VA 22302-1507 SN 0016-8556 J9 GEOTIMES JI Geotimes PD FEB PY 1995 VL 40 IS 2 BP 22 EP 23 PG 2 WC Geosciences, Multidisciplinary SC Geology GA QF054 UT WOS:A1995QF05400018 ER PT J AU WING, S AF WING, S TI PALEOBOTANY SO GEOTIMES LA English DT Article RP WING, S (reprint author), SMITHSONIAN INST,DEPT PALEOBIOL,NHB121,WASHINGTON,DC 20560, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOLOGICAL INST PI ALEXANDRIA PA 4220 KING ST, ALEXANDRIA, VA 22302-1507 SN 0016-8556 J9 GEOTIMES JI Geotimes PD FEB PY 1995 VL 40 IS 2 BP 27 EP 28 PG 2 WC Geosciences, Multidisciplinary SC Geology GA QF054 UT WOS:A1995QF05400025 ER PT J AU WOOD, WF PARKER, JM WELDON, PJ AF WOOD, WF PARKER, JM WELDON, PJ TI VOLATILE COMPONENTS IN SCENT GLAND SECRETIONS OF GARTER SNAKES (THAMNOPHIS SPP) SO JOURNAL OF CHEMICAL ECOLOGY LA English DT Article DE GARTER SNAKES; THAMNOPHIS; 2-PIPERIDONE; TRIMETHYLAMINE; SHORT-CHAIN CARBOXYLIC ACIDS AB Previous analyses of the scent gland secretions of snakes have focused on the nonvolatile components. Gas chromatography-mass spectrometry of secretions from North American garter snakes (Thamnophis butleri, T. couchi, T. elegans, T. me[anogaster, and T. sirtalis) indicated the following seven major volatile components: acetic, propanoic, 2-methylpropanoic, butanoic, and 3-methylbutanoic acids, trimethylamine, and 2-piperidone. Five or more of these compounds were observed in secretions of select bold, colubrid, pythonid, and viperid snakes, suggesting that they are widespread scent gland products. 3-Methylbutanal also was detected in some snake species. C1 TEXAS A&M UNIV,DEPT BIOL,COLLEGE STN,TX 77843. SMITHSONIAN INST,CTR CONSERVAT & RES,FRONT ROYAL,VA 22630. RP WOOD, WF (reprint author), HUMBOLDT STATE UNIV,DEPT CHEM,ARCATA,CA 95521, USA. OI Wood, William/0000-0002-2991-0054 NR 9 TC 6 Z9 7 U1 0 U2 4 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0098-0331 J9 J CHEM ECOL JI J. Chem. Ecol. PD FEB PY 1995 VL 21 IS 2 BP 213 EP 219 DI 10.1007/BF02036652 PG 7 WC Biochemistry & Molecular Biology; Ecology SC Biochemistry & Molecular Biology; Environmental Sciences & Ecology GA QR035 UT WOS:A1995QR03500008 PM 24234020 ER PT J AU HINES, AH WOLCOTT, TG GONZALEZGURRIARAN, E GONZALEZESCALANTE, JL FREIRE, J AF HINES, AH WOLCOTT, TG GONZALEZGURRIARAN, E GONZALEZESCALANTE, JL FREIRE, J TI MOVEMENT PATTERNS AND MIGRATIONS IN CRABS - TELEMETRY OF JUVENILE AND ADULT BEHAVIOR IN CALLINECTES-SAPIDUS AND MAJA-SQUINADO SO JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM LA English DT Article; Proceedings Paper CT Meeting on Orientation and Migration in the Sea CY APR 18-21, 1994 CL PLYMOUTH, ENGLAND SP MARINE BIOL ASSOC, SOC EXPTL BIOL ID CENTRAL CHESAPEAKE BAY; MOLTING BLUE CRABS; OPILIO O FABR; HABITAT SELECTION; MICROHABITAT SELECTION; ADAPTIVE SIGNIFICANCE; HOMARUS-AMERICANUS; SHALLOW-WATER; SNOW CRAB; SUBESTUARY AB Late stage juveniles and adults of Callinectes sapidus in Chesapeake Bay, USA, and Maja squinado off the Ria de Arousa, Spain, were compared for ontogenetic changes in movement patterns (speed, distance, orientation) and habitat selection (depth, substrate) using ultrasonic telemetry and published information. After settling in submerged grass beds in the fewer Bay, 2O-mm juvenile C. sapidus disperse long distances into low salinity sub-estuaries to feed and grow to maturity in two years. Within the Rhode River sub-estuary, juvenile C. sapidus moved with a mean speed of 12 m h(-1) in nearshore shallows (1.1 m); whereas adults averaged 24 m h(-1) in the deeper (2.9 m) channel areas and moved freely in and out of the main estuary. Individuals of both life stages exhibited a pattern of slow meandering (juveniles, 2 m h(-1), adults 10 m h(-1)) within a limited area, alternating with faster, directionally-orientedmovement Both stages >50 m h(-1)) between meandering sites. Juvenile and adult males over winter in deeper water nearby, while inseminated females migrate long distances into high salinity areas to incubate the eggs. Callinectes sapidus completes the migration cycle only once per 2.5-y generation. Maja squinado settles on reeks in shallow kelp forests in the coastal zone, where they grow to maturity in 2 y. Juveniles moved slowly (0.5 m h(-1)) while meandering without directional. orientation on shallow (4 m) small patch reefs during summer. After the pubertal moult in summer, adults also meandered slowly (1 m h(-1)) mostly on rocks at slightly greater depth (7 m). In late summer and autumn, newly mature and older adults moved with directional orientation into deeper (10-40 m) water for the winter, until migrating back to the shallows for the summer; whereas juveniles remained inshore on rocks for the winter. Adult M. squinado live several years after puberty and complete the seasonal migratory cycle several times during their lives. Despite marked differences between the two species in life histories and habitats, their similarities in behaviour and shifts in habitat utilization during ontogeny reflect adaptation to similar selective pressures. For both species, juvenile movement and habitat selection primarily indicates adaptation to intense predation pressure and growth optimization; whereas adult behaviour and migration indicates relaxed predation pressure but optimization of energy needs and site of larval release. C1 N CAROLINA STATE UNIV, DEPT MARINE EARTH & ATMOSPHER SCI, RALEIGH, NC 27695 USA. UNIV A CORUNA, DEPT BIOL ANIM & BIOL VEXETAL, E-15071 LA CORUNA, SPAIN. RP HINES, AH (reprint author), SMITHSONIAN ENVIRONM RES CTR, POB 28, EDGEWATER, MD 21037 USA. RI Gonzalez-Gurriaran, Eduardo/A-5907-2011 OI Gonzalez-Gurriaran, Eduardo/0000-0002-3360-7306 NR 58 TC 75 Z9 77 U1 1 U2 10 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA SN 0025-3154 EI 1469-7769 J9 J MAR BIOL ASSOC UK JI J. Mar. Biol. Assoc. U.K. PD FEB PY 1995 VL 75 IS 1 BP 27 EP 42 PG 16 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA QL633 UT WOS:A1995QL63300004 ER PT J AU KALFATOVIC, MR AF KALFATOVIC, MR TI LES-DEMOISELLES-DAVIGNON - RUBIN,W SO LIBRARY JOURNAL LA English DT Book Review RP KALFATOVIC, MR (reprint author), SMITHSONIAN INST LIB,WASHINGTON,DC, 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 FEB 1 PY 1995 VL 120 IS 2 BP 74 EP 74 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QD918 UT WOS:A1995QD91800100 ER PT J AU RANGARAJAN, FVN FABIAN, AC FORMAN, WR JONES, C AF RANGARAJAN, FVN FABIAN, AC FORMAN, WR JONES, C TI A ROSAT PSPC INVESTIGATION OF NGC-1399 - COLD GAS AND COOLING FLOWS IN ELLIPTIC GALAXIES SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE ISM, GENERAL; COOLING FLOWS; GALAXIES, ELLIPTIC AND LENTICULAR, CD; GALAXIES, INDIVIDUAL, NGC 1399; GALAXIES, ISM; X-RAYS, ISM ID RAY ABSORBING MATTER; X-RAY; TELESCOPE OBSERVATIONS; INTERSTELLAR MATTER; NGC-1399; CLUSTER; IONIZATION; EMISSION; PLASMA AB ROSAT PSPC observations of the Fornax cluster reveal an isothermal gaseous medium at radii from 10 to 330 kpc, with a temperature of 1.1 +/- 0.1 keV using Raymond-Smith (RS) models and 0.9 +/- 0.1 keV using Mewe-Kaastra (MEKA) models. Within 10 kpc the temperature falls to 0.85 keV (RS) or 0.6 keV (MEKA). The surface brightness is well fitted by a cooling flow model with a mass deposition rate of at least 2M. yr(-1), mostly within the galaxy itself. The abundance is consistent with solar, and the mass of hot X-ray-emitting gas out to 46 kpc is over 10(10) M.. The MEKA models show clear evidence of an absorbing column density, greater than 10(21) cm(-2) in the centre of NGC 1399, and the variation of column density with radius implies a mass of cold gas in the galaxy of 1.6 x 10(10) M. within 40 kpc, and a mass deposition profile M proportional to r. Within 10 kpc of the centre of NGC 1399, the mean density of cold absorbing gas is similar to that of the hot gas. Using a deprojection method, the density and pressure in the gas are calculated, and other physical parameters of the gas derived. This combination of analyses is used to constrain the gaseous history of NGC 1399. We set a limit on the X-ray flux of the radio source. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RP RANGARAJAN, FVN (reprint author), UNIV CAMBRIDGE,INST ASTRON,MADINGLEY RD,CAMBRIDGE CB3 0HA,ENGLAND. NR 39 TC 41 Z9 41 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD FEB 1 PY 1995 VL 272 IS 3 BP 665 EP 677 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QF015 UT WOS:A1995QF01500021 ER PT J AU WINKER, K RAPPOLE, JH RAMOS, MA AF WINKER, K RAPPOLE, JH RAMOS, MA TI THE USE OF MOVEMENT DATA AS AN ASSAY OF HABITAT QUALITY SO OECOLOGIA LA English DT Article DE HABITAT SELECTION; MODEL; NEARCTIC-NEOTROPIC MIGRANT; RAIN-FOREST; TERRITORIALITY ID SOUTHERN VERACRUZ; POPULATION-DYNAMICS; WOOD THRUSH; DENSITY; ENVIRONMENTS; EVOLUTION AB Based on our observations and those of others from the literature, we construct a graphical model of habitat use in territorial species at high densities relative to optimal habitat availability. This model ignores differences in abundance among habitats, and, together with other models of habitat use, predicts that there should be greater stability (lower turnover rates) among individuals occupying optimal habitat than among those in suboptimal habitat(s). Future studies assessing quality among habitats might take advantage of this by comparing individual turnover rates among habitat types using standard mark-recapture methodology. As an illustrative example, we present a case in wintering wood thrushes (Catharus mustelinus; Muscicapidae: Turdinae) in which relative abundance and habitat quality were inversely related. Many individuals of this nearctic-neotropic migrant species hold nonbreeding territories in the seemingly crowded rainforest of southern Veracruz, Mexico. C1 WORLD BANK, DIV ENVIRONM ASSESSMENT PROGRAM, WASHINGTON, DC 20433 USA. RP SMITHSONIAN INST, NZP, CTR CONSERVAT & RES, FRONT ROYAL, VA 22630 USA. RI Winker, Kevin/M-2042-2014 OI Winker, Kevin/0000-0002-8985-8104 NR 33 TC 65 Z9 67 U1 1 U2 19 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0029-8549 EI 1432-1939 J9 OECOLOGIA JI Oecologia PD FEB PY 1995 VL 101 IS 2 BP 211 EP 216 DI 10.1007/BF00317286 PG 6 WC Ecology SC Environmental Sciences & Ecology GA QH848 UT WOS:A1995QH84800011 PM 28306793 ER PT J AU SZABO, BJ HAYNES, CV MAXWELL, TA AF SZABO, BJ HAYNES, CV MAXWELL, TA TI AGES OF QUATERNARY PLUVIAL EPISODES DETERMINED BY URANIUM-SERIES AND RADIOCARBON DATING OF LACUSTRINE DEPOSITS OF EASTERN SAHARA SO PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY LA English DT Article ID AFRICA; CARBONATES; SEDIMENTS; OASIS; EGYPT; SEA AB As documented by radiocarbon dating and geoarchaeological investigations, the now hyperarid northwestern Sudan and southwestern Egypt experienced a period of greater effective moisture during early and middle Holocene time, about 10-5 ka. We have used the uranium-series technique to date lacustrine carbonates from Bir Tarfawi, Bir Sahara East, Wadi Hussein, Oyo Depression, and the Great Selima Sand Sheet localities. Results indicate five paleolake-forming episodes occurred at about 320-250, 240-190, 155-120, 90-65 and 10-5 ka. Four of these five pluvial episodes may be correlated with major interglacial stages 9, 7, 5e, and 1; the 90-65 ka episode may be correlated with substage 5c or 5a. Our results support the contention that past pluvial episodes in North Africa corresponded to the interglacial periods farther north. Ages of lacustrine carbonates from existing eases and from the sand sheet fail to indicate pluvial conditions between about 60 and 30 ka. Age results and held relationships suggest that the;oldest lake- and ground-water-deposited carbonates were much more extensive than those of the younger period, and that carbonate of the latest wet periods were geographically localized within depressions and buried channels. C1 UNIV ARIZONA,DEPT ANTHROPOL & GEOSCI,TUCSON,AZ 85721. SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,CTR EARTH & PLANETARY STUDIES,WASHINGTON,DC 20560. RP SZABO, BJ (reprint author), US GEOL SURVEY,DENVER FED CTR,MS 974,BOX 25046,DENVER,CO 80225, USA. NR 43 TC 97 Z9 97 U1 0 U2 10 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-0182 J9 PALAEOGEOGR PALAEOCL JI Paleogeogr. Paleoclimatol. Paleoecol. PD FEB PY 1995 VL 113 IS 2-4 BP 227 EP 242 DI 10.1016/0031-0182(95)00052-N PG 16 WC Geography, Physical; Geosciences, Multidisciplinary; Paleontology SC Physical Geography; Geology; Paleontology GA QN177 UT WOS:A1995QN17700007 ER PT J AU BENSON, RH AF BENSON, RH TI IS THE DEATH OF AN OCEAN FALLING THROUGH A STRATIGRAPHIC CRACK SO PALEOCEANOGRAPHY LA English DT Editorial Material ID MIOCENE RP BENSON, RH (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,WASHINGTON,DC, USA. NR 7 TC 47 Z9 48 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0883-8305 J9 PALEOCEANOGRAPHY JI Paleoceanography PD FEB PY 1995 VL 10 IS 1 BP 1 EP 3 DI 10.1029/94PA02581 PG 3 WC Geosciences, Multidisciplinary; Oceanography; Paleontology SC Geology; Oceanography; Paleontology GA RB740 UT WOS:A1995RB74000001 ER PT J AU BENSON, RH HAYEK, LAC HODELL, DA BIED, KRE AF BENSON, RH HAYEK, LAC HODELL, DA BIED, KRE TI EXTENDING THE CLIMATIC PRECESSION CURVE BACK INTO THE LATE MIOCENE BY SIGNATURE TEMPLATE COMPARISON SO PALEOCEANOGRAPHY LA English DT Article ID POLARITY TIME-SCALE; PLIOCENE BOUNDARY; CALABRIA AB The rhythm of sedimentary cycles reflecting the climatic precession signal (19 and 23 kyr components) from the upper Miocene of the Bou Regreg section at Ain el Beida near Rabat, Morocco, had been analyzed to determine the age of the geomagnetic polarity reversals of Subchron 5N1 (C3An.1n). A new method of analysis of cycle ''signatures'' uses adjusted data series as represented by a signal obtained from grey-level traces through image-enhanced photographs of the sediment cycles. The measured, ''timeless'' signal is reduced and geometrically transformed to a signature template in order to compare its pattern with similar time constrained segments of the target precession signal (retrodicted for 35 degrees N). Conventional statistical and spectral analysis tests are used to regress to the best possible fit. A date estimate of 5.94 Ma for the Chron 5/Gilbert boundary (C3An.1n/C3r), which occurs near the times of the closure of the Rifian Corridor and the beginning of the ''drawdown'' phase of the Messinian Salinity Crisis, is found to be in close agreement with independent approximations derived from extrapolation of sea floor spreading, radiometric dating, and younger Earth-orbital tuning ages. C1 UNIV FLORIDA,DEPT GEOL,GAINESVILLE,FL 32611. SMITHSONIAN INST,RABAT,MOROCCO. RP BENSON, RH (reprint author), SMITHSONIAN INST,NATL MUSEUM AMER HIST,MCR 121,WASHINGTON,DC 20560, USA. NR 35 TC 17 Z9 17 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0883-8305 J9 PALEOCEANOGRAPHY JI Paleoceanography PD FEB PY 1995 VL 10 IS 1 BP 5 EP 20 DI 10.1029/94PA02539 PG 16 WC Geosciences, Multidisciplinary; Oceanography; Paleontology SC Geology; Oceanography; Paleontology GA RB740 UT WOS:A1995RB74000002 ER PT J AU GRAESSLE, DE FITCH, JJ INGRAM, R JUDA, JZ BLAKE, RL AF GRAESSLE, DE FITCH, JJ INGRAM, R JUDA, JZ BLAKE, RL TI REFLECTOMETER END STATION FOR SYNCHROTRON CALIBRATIONS OF ADVANCED X-RAY ASTROPHYSICS FACILITY FIGHT OPTICS AND FOR SPECTROMETRIC RESEARCH APPLICATIONS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 5th International Conference on Synchrotron Radiation Instrumentation CY JUL 18-22, 1994 CL STONY BROOK, NY SP ARGONNE NATL LAB, ADV PHOTON SOURCE, STANFORD SYNCHROTRON RADIAT LAB, ASSOC UNIV INC C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP GRAESSLE, DE (reprint author), SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138, USA. NR 6 TC 3 Z9 3 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 FEB PY 1995 VL 66 IS 2 BP 2095 EP 2098 DI 10.1063/1.1145739 PN 2 PG 4 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA QK981 UT WOS:A1995QK98100242 ER PT J AU YOSHINO, K SMITH, PL PARKINSON, WH THORNE, AP ITO, K AF YOSHINO, K SMITH, PL PARKINSON, WH THORNE, AP ITO, K TI THE COMBINATION OF A VUV FOURIER-TRANSFORM SPECTROMETER AND SYNCHROTRON-RADIATION SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article; Proceedings Paper CT 5th International Conference on Synchrotron Radiation Instrumentation CY JUL 18-22, 1994 CL STONY BROOK, NY SP ARGONNE NATL LAB, ADV PHOTON SOURCE, STANFORD SYNCHROTRON RADIAT LAB, ASSOC UNIV INC ID CROSS-SECTION MEASUREMENTS; BAND OSCILLATOR-STRENGTHS; SCHUMANN-RUNGE BANDS; VACUUM ULTRAVIOLET; O-2 C1 NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN. UNIV LONDON IMPERIAL COLL SCI & TECHNOL,BLACKETT LAB,LONDON SW7 2BZ,ENGLAND. RP YOSHINO, K (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 12 TC 1 Z9 2 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 FEB PY 1995 VL 66 IS 2 BP 2122 EP 2124 DI 10.1063/1.1145747 PN 2 PG 3 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA QK981 UT WOS:A1995QK98100250 ER PT J AU HEYMAN, IM AF HEYMAN, IM TI SMITHSONIAN PERSPECTIVES SO SMITHSONIAN LA English DT Editorial Material C1 SMITHSONIAN INST,WASHINGTON,DC 20560. 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 FEB PY 1995 VL 25 IS 11 BP 8 EP 8 PG 1 WC Humanities, Multidisciplinary SC Arts & Humanities - Other Topics GA QD146 UT WOS:A1995QD14600001 ER PT J AU MAMAY, SH AF MAMAY, SH TI REINSTATEMENT OF THE FOSSIL NAME RUSSELLITES (NOT A SYNONYM OF YUANIA) SO TAXON LA English DT Article ID TEXAS AB The Permian genus Russellites, first described from Texas, U.S.A., is now known from several localities in China. However, Yuania, the name of a dissimilar Chinese plant, has been misapplied consistently to the Chinese Russellites, thereby obscuring an important palaeo-floristic link between North America and Asia. The taxonomic independence of the two genera is emphasized, and the appropriate nomenclatural adjustments are made. RP MAMAY, SH (reprint author), SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560, USA. NR 18 TC 5 Z9 6 U1 0 U2 0 PU INT ASSN PLANT TAXONOMY PI BERLIN PA BOTANISCHER GARTEN & MUSEUM KONIGIN-LUISSE-STRASSE 6-8, W-1000 BERLIN, GERMANY SN 0040-0262 J9 TAXON JI Taxon PD FEB PY 1995 VL 44 IS 1 BP 43 EP 51 DI 10.2307/1222676 PG 9 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA QJ049 UT WOS:A1995QJ04900005 ER PT J AU GREUTER, W NICOLSON, DH AF GREUTER, W NICOLSON, DH TI DEMOCRACY AND BOTANICAL NOMENCLATURE SO TAXON LA English DT Editorial Material C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT BOT,MRC 166,WASHINGTON,DC 20560. RP GREUTER, W (reprint author), BOT GARTEN & BOT MUSEUM BERLIN DAHLEM,KONIGIN LUISE STR 6-8,D-14191 BERLIN,GERMANY. NR 0 TC 1 Z9 1 U1 0 U2 0 PU INT ASSN PLANT TAXONOMY PI BERLIN PA BOTANISCHER GARTEN & MUSEUM KONIGIN-LUISSE-STRASSE 6-8, W-1000 BERLIN, GERMANY SN 0040-0262 J9 TAXON JI Taxon PD FEB PY 1995 VL 44 IS 1 BP 85 EP 86 DI 10.2307/1222682 PG 2 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA QJ049 UT WOS:A1995QJ04900011 ER PT J AU HUBER, W AF HUBER, W TI TYPIFICATION OF ERIGERON-GLABRATUS (ASTERACEAE) SO TAXON LA English DT Editorial Material AB Erigeron glabratus Hoppe and Hornsch. ex Bluff and Fingerh. is neotypified on a 1990 collection by Huber and Fotsch 12220 (ZT [now at Z]). C1 ETH ZURICH,GEOBOT INST,CH-8008 ZURICH,SWITZERLAND. RP HUBER, W (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT BOT,MRC 166,WASHINGTON,DC 20560, USA. NR 18 TC 0 Z9 0 U1 0 U2 1 PU INT ASSN PLANT TAXONOMY PI BERLIN PA BOTANISCHER GARTEN & MUSEUM KONIGIN-LUISSE-STRASSE 6-8, W-1000 BERLIN, GERMANY SN 0040-0262 J9 TAXON JI Taxon PD FEB PY 1995 VL 44 IS 1 BP 87 EP 89 DI 10.2307/1222683 PG 3 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA QJ049 UT WOS:A1995QJ04900012 ER PT J AU CAMERON, AGW AF CAMERON, AGW TI COSMIC-RAYS - ACCOUNTING FOR LIGHT-ELEMENT ABUNDANCES SO NATURE LA English DT Editorial Material RP CAMERON, AGW (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 8 TC 3 Z9 3 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD JAN 26 PY 1995 VL 373 IS 6512 BP 286 EP 286 DI 10.1038/373286a0 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QD404 UT WOS:A1995QD40400031 ER PT J AU RUIZLAPUENTE, P KIRSHNER, RP PHILLIPS, MM CHALLIS, PM SCHMIDT, BP FILIPPENKO, AV WHEELER, JC AF RUIZLAPUENTE, P KIRSHNER, RP PHILLIPS, MM CHALLIS, PM SCHMIDT, BP FILIPPENKO, AV WHEELER, JC TI LATE-TIME SPECTRA AND TYPE IA SUPERNOVA MODELS - NEW CLUES FROM THE HUBBLE-SPACE-TELESCOPE SO ASTROPHYSICAL JOURNAL LA English DT Article DE DISTANCE SCALE; SUPERNOVAE, GENERAL; ULTRAVIOLET, STARS ID WHITE-DWARF MODELS; OPACITY CALCULATIONS; ATOMIC DATA; ULTRAVIOLET; CONSTANT; IONS; PHOTOIONIZATION; RECOMBINATION AB Calculated late-time spectra of two classical hydrodynamical models for Type Ia supernovae (deflagration model W7 of Nomoto, Thielemann, & Yokoi, and delayed detonation model DD4 of Woosley & Weaver) are compared with observations of SN 1992A and other spectroscopically normal SNe Ia. An important new piece of information is provided by observations done with the Hubble Space Telescope (HST) which cover the ultraviolet range at the nebular phase of a SN Ia: SN 1992A in NGC 1380. For the first time a picture of SN Ia emission from the ultraviolet through the optical is obtained at these phases. Predictions of the classical models (W7 and DD4) are compared with the observed spectrum of SN 1992A and with the optical spectra of SN 1989M in NGC 4579 and SN 1990N in NGC 4639 at similar epochs. The absolute B and V magnitudes of the models are also estimated at these late phases. Taken at face value the nebular spectra of these ''classical'' models are more consistent with the long extragalactic distance scale, pointing to distances to NGC 4579 around 21 +/- 3 Mpc and a slightly larger distance, 22 +/- 3 Mpc, to NGC 4639, on the back side of the Virgo Cluster. However, the calculated Fe+3 luminosity as predicted from the models exceeds the observed limit from the HST data of SN 1992A. Other differences in the ratios of the line intensities between calculated and observed spectra are also seen in the optical. We conclude that these models, which match the photospheric spectra, show some disagreement with the observed spectra at the nebular phases. They may not be the best choice for spectroscopically normal SNe Ia, and their use as an independent calibration of the extragalactic distance scale should be viewed with caution. C1 NATL OPT ASTRON OBSERV, CERRO TOLOLO INTER AMER OBSERV, LA SERENA, CHILE. UNIV CALIF BERKELEY, DEPT ASTRON, BERKELEY, CA 94720 USA. UNIV TEXAS, DEPT ASTRON, AUSTIN, TX 78712 USA. RP HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. OI Schmidt, Brian/0000-0001-6589-1287 NR 55 TC 27 Z9 27 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD JAN 20 PY 1995 VL 439 IS 1 BP 60 EP 73 DI 10.1086/175151 PN 1 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QC786 UT WOS:A1995QC78600007 ER PT J AU DOW, KL WHITE, SDM AF DOW, KL WHITE, SDM TI ROSAT OBSERVATIONS OF COMA-CLUSTER GALAXIES SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, CLUSTERS, INDIVIDUAL (COMA); GALAXIES, PHOTOMETRY; X-RAYS, GALAXIES ID SPECTRAL PROPERTIES; CATALOG AB The similar to 86 ks ROSAT Position Sensitive Proportional Counter image of the Coma Cluster is deeper than any previous X-ray observation of a galaxy cluster. We search for X-ray emission from 35 individual galaxies in a magnitude-limited sample, all of which lie within 20' of the optical axis in at least one of the four Coma pointings. We detect seven galaxies in the 0.4-2.4 keV band at a significance level exceeding 3 sigma, and a further four at above 2 sigma. Although we can set only upper limits on the individual flux from each of the other galaxies, we are able to measure their mean flux by stacking the observations. The X-ray luminosities of the seven detections range from 6.2 x 10(40) to 1.5 x 10(42) ergs s(-1) (0.4-2.4 keV for H-0 = 50 km s(-1) Mpc(-1)). For galaxies with a blue absolute magnitude of about -21 we find a mean X-ray luminosity of 1.3 x 10(40) ergs s(-1). The ratio of X-ray to optical luminosity is substantially smaller for such objects than for the brightest galaxies in the cluster. The X-ray luminosities of the four brightest galaxies are ill-defined, however, because of ambiguity in distinguishing galaxy emission from cluster emission. Each object appears to be related to significant structure in the diffuse intracluster medium. We also investigate emission in the softer 0.2-0.4 keV band where detections are less significant because of the higher background, and we discuss the properties of a number of interesting individual sources. The X-ray luminosities of the Coma galaxies are similar to those of galaxies in the Virgo Cluster and in other regions with relatively low galaxy density. We conclude that large-scale environmental effects do not significantly enhance or suppress the average X-ray emission from galaxies, but that individual objects vary in luminosity substantially in a way which may depend on the detailed history of their local environment. C1 UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND. RP DOW, KL (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 52 TC 29 Z9 29 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 JAN 20 PY 1995 VL 439 IS 1 BP 113 EP 120 DI 10.1086/175156 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QC786 UT WOS:A1995QC78600012 ER PT J AU MORSE, JA WILSON, AS ELVIS, M WEAVER, KA AF MORSE, JA WILSON, AS ELVIS, M WEAVER, KA TI EXTENDED SOFT-X-RAY EMISSION IN SEYFERT-GALAXIES - ROSAT HRI OBSERVATIONS OF NGC-3516, NGC-4151, AND MARKARIAN-3 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (NGC 3516, NGC 4151, MARKARIAN 3); GALAXIES, SEYFERT; X-RAYS, GALAXIES ID NARROW-LINE REGION; NGC-4151; NGC-3516; GAS; CLOUDS; ORIGIN; HOT AB We have used the ROSAT High Resolution Imager (HRI) to examine the distribution of soft X-rays in three nearby Seyfert galaxies with similar to 4''-5'' FWHM spatial resolution. A feature of our analysis is an attempt to remove errors in the aspect solution using a method developed by one of us (J. M.). NGC 4151 shows resolved X-ray emission that is spatially correlated with the optical extended narrow-line region (ENLR), confirming the results obtained with the Einstein HRI by Elvis, Briel, & Henry. Image deconvolutions allow us to trace the extended X-rays along a position angle of similar to 50 degrees/230 degrees as far as similar to 1.5 kpc southwest and similar to 0.5 kpc northeast of the nucleus (assuming a distance of 20 Mpc with H-0 = 50 km s(-1) Mpc(-1)). When a point source is subtracted from the nucleus of NGC 4151, the extended, bipolar X-rays peak in brightness similar to 425 pc southwest of the nucleus and similar to 280 pc northeast of the nucleus. The extended emission accounts for at least 31% of the total 0.1-2 keV ROSAT HRI flux (19% from the southwest quadrant, 12% from the northeast and constitutes roughly half of the total soft X-ray excess emission observed with other X-ray detectors. The soft X-ray excess in NGC 4151 has been modeled recently as containing both variable and constant flux components. We suggest that the constant flux component of the soft excess emission originates in the spatially extended regions we have resolved. If the extended X-rays result from electron-scattering of nuclear X-rays, the central source must emit anisotropically, and preferentially toward the extended X-rays and the ENLR. Alternatively, the extended X-rays may represent thermal emission from a hot (T similar to 10(7) K), outflowing wind which is in rough pressure equilibrium with the optical narrow-line-emitting clouds observed over the same spatial scale. NGC 3516 is elongated along a position angle of similar to 40 degrees/220 degrees, similar to the direction of the Z-shaped narrow-line region. However, the azimuthally averaged radial brightness profile inside a radius of 10'' is not distinguishable from a calibration point source. Much or all of the elongation may result from residual errors in the aspect solution, although an extended component associated with the ENLR is possible. Mrk 3 is very faint in our HRI image and is probably spatially unresolved. We detect the faint X-ray source similar to 2' west of the Mrk 3 nucleus previously found by Turner, Urry, & Mushotzky. It is not known whether this companion is physically associated with Mrk 3 although it does lie along a direction that is within similar or equal to 1 degrees of the axis of the 2'' nuclear radio jet. We also detected the BL Lac object BL 1207 + 39 similar to 5' north-northwest of NGC 4151. This object appears spatially unresolved, but some excess X-ray emission may be observed in the azimuthally averaged radial brightness profile of BL 1207+39 between radii of 10'' and 30'' when compared to a calibration source. A much deeper image is necessary to confirm this result. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. PENN STATE UNIV,DEPT ASTRON & ASTROPHYS,UNIVERSITY PK,PA 16802. RP MORSE, JA (reprint author), SPACE TELESCOPE SCI INST,3700 SAN MARTIN DR,BALTIMORE,MD 21218, USA. NR 42 TC 58 Z9 58 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 JAN 20 PY 1995 VL 439 IS 1 BP 121 EP 131 DI 10.1086/175157 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QC786 UT WOS:A1995QC78600013 ER PT J AU SMIRNOV, BM AF SMIRNOV, BM TI ICOSAHEDRAL CLUSTERS WITH PAIR INTERACTION OF ATOMS SO CHEMICAL PHYSICS LETTERS LA English DT Article ID LENNARD-JONES CLUSTERS; ARGON CLUSTERS; MONATOMIC SYSTEMS; MECHANICS AB Expressions for the total binding energy of atoms in icosahedral clusters with unfilled layers are obtained for a short-range interaction of atoms. These results and numerical calculations for the Lennard-Jones clusters with filled layers allow one to find the binding energy for the Lennard-Jones clusters with unfilled layers. Comparison of energetic parameters for clusters with icosahedral and face-centered cubic structures shows that the competition between these structures of clusters takes place in a wide range of cluster sizes. RP SMIRNOV, BM (reprint author), SMITHSONIAN INST,INST THEORET ATOM & MOLEC PHYS,ASTRON OBSERV,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 21 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD JAN 20 PY 1995 VL 232 IS 4 BP 395 EP 400 DI 10.1016/0009-2614(94)01365-3 PG 6 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA QD030 UT WOS:A1995QD03000015 ER PT J AU BARRIOLA, M AF BARRIOLA, M TI ELECTROWEAK STRINGS PRODUCE BARYONS SO PHYSICAL REVIEW D LA English DT Note ID WEINBERG-SALAM THEORY; MAGNETIC-FIELDS; VORTEX SOLUTIONS; TRANSITION RP BARRIOLA, M (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 27 TC 9 Z9 9 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2821 J9 PHYS REV D JI Phys. Rev. D PD JAN 15 PY 1995 VL 51 IS 2 BP R300 EP R304 DI 10.1103/PhysRevD.51.R300 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QE570 UT WOS:A1995QE57000003 ER PT J AU PRESS, WH AF PRESS, WH TI VOYAGE TO THE GREAT ATTRACTOR - EXPLORING INTERGALACTIC SPACE - DRESSLER,A SO NATURE LA English DT Book Review RP PRESS, WH (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD JAN 12 PY 1995 VL 373 IS 6510 BP 113 EP 114 DI 10.1038/373113a0 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QB063 UT WOS:A1995QB06300043 ER PT J AU MIYOSHI, M MORAN, J HERRNSTEIN, J GREENHILL, L NAKAI, N DIAMOND, P INOUE, M AF MIYOSHI, M MORAN, J HERRNSTEIN, J GREENHILL, L NAKAI, N DIAMOND, P INOUE, M TI EVIDENCE FOR A BLACK-HOLE FROM HIGH ROTATION VELOCITIES IN A SUB-PARSEC REGION OF NGC4258 SO NATURE LA English DT Article ID H2O MASER EMISSION; WATER-VAPOR MASER; NGC-4258; NGC-3079 AB MANY galaxies are thought to contain massive black holes-exceeding ten million solar masses-at their centres(1,2), but firm observational evidence has proved to be surprisingly elusive. The best evidence comes from observing gas or stars rotating rapidly within a small region around a central body. If the observed velocities are due solely to the gravitational force of the central body-as in the Solar System-then the mass of the central body can be readily calculated. Here we present observations of rotating gas near the centre of the galaxy NGC4258 (M106), which indicate the presence of a mass of 3.6 x 10(7) solar masses in a region less than 0.13 pc in radius. The volume-averaged mass density in this region exceeds by a factor of at least 40 that for any other black-hole candidate observed previously. These observations provide compelling evidence that a massive black hole exists at the centre of NGC4258. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NATL ASTRON OBSERV,NOBEYAMA RADIO OBSERV,MINAMISA KU,NAGANO 38413,JAPAN. NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. RP MIYOSHI, M (reprint author), NATL ASTRON OBSERV,MIZUSAWA ASTROGEODYNAM OBSERV,2-12 HOSHIGAOKA,MIZUSAWA,IWATE 023,JAPAN. NR 26 TC 780 Z9 786 U1 2 U2 10 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD JAN 12 PY 1995 VL 373 IS 6510 BP 127 EP 129 DI 10.1038/373127a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QB063 UT WOS:A1995QB06300050 ER PT J AU KUHN, O BECHTOLD, J CUTRI, R ELVIS, M RIEKE, M AF KUHN, O BECHTOLD, J CUTRI, R ELVIS, M RIEKE, M TI THE SPECTRAL ENERGY-DISTRIBUTION OF THE Z=3 QUASAR - HS-1946+7658 SO ASTROPHYSICAL JOURNAL LA English DT Article DE QUASARS, INDIVIDUAL (HS 1946+7658); RADIO CONTINUUM, GALAXIES; X-RAYS, GALAXIES ID ACTIVE GALACTIC NUCLEI; EMISSION-LINE PROFILES; SMALL MAGELLANIC CLOUD; LYMAN-ALPHA SYSTEMS; BRIGHT QSO SURVEY; INTERSTELLAR EXTINCTION; EQUATORIAL FIELDS; ACCRETION DISKS; STANDARD STARS; FE-II AB For the bright z = 3.02 radio-quiet quasar, HS 1946+7658, we have obtained radio to X-ray data within the past year: 5 GHz and 1415 MHz data from the VLA; IR photometry at J, H, K, L' (3.4 mu m) and N; IR spectroscopy; UBVRI photometry; optical spectrophotometry and high-resolution spectra; and an X-ray spectrum from the ROSAT PSPC. The spectral energy distribution (SEC) constructed from these data is compared to the mean SED for a set of low-redshift quasars, and while they appear generally similar, there are several differences. In relation to the low-redshift mean, the SED of HS 1946+7658 shows (1) only an upper limit at 10 mu m (a rest wavelength of 2.5 mu m) indicating that HS 1946+7658 does not have a strong near-IR excess such as hot dust would produce; (2) relatively weak Fe II and Balmer continuum emission at similar to 3000 Angstrom; and (3) a steeper turndown shortward of Ly alpha, even after correction for the Ly alpha forest absorption lines. C1 UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. RP KUHN, O (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 50 TC 13 Z9 13 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 JAN 10 PY 1995 VL 438 IS 2 BP 643 EP 649 DI 10.1086/175107 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600011 ER PT J AU MARSTON, AP ELMEGREEN, D ELMEGREEN, B FORMAN, W JONES, C FLANAGAN, K AF MARSTON, AP ELMEGREEN, D ELMEGREEN, B FORMAN, W JONES, C FLANAGAN, K TI ROSAT OBSERVATIONS OF THE LUMINOUS X-RAY SOURCES IN M51 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, INDIVIDUAL (M51); X-RAYS, GALAXIES ID STAR FORMATION; SPIRAL ARMS; GALAXY M51; H-I; EMISSION; EXTINCTION; SUPERNOVA; SPECTRUM; PATTERN; IMAGES AB Our an analysis of a 24 ks ROSAT Position Sensitive Proportional Counter image of the interacting galaxies NGC 5194 (M51) and NGC 5195 shows that X-ray emission is distributed across the whole of NGC 5194. In addition to the diffuse emission and a bright nuclear region, eight individual sources were detected with 0.2-2.2 keV luminosities from 5 to 29 x 10(38) ergs s(-1), more than 10 times higher than typical bright Galactic X-ray sources. The energy distribution of the luminous sources can be characterized by bremsstrahlung spectra with temperatures around 1 keV and low-energy absorption exceeding that expected from our Galaxy. Two sources lie in an inner spiral arm, while five lie along the outer edges of the outer spiral arms. Four sources (R1, R2, R4, and R6) lie in or near regions of recent star formation as indicated by H II regions or CO emission from molecular clouds. However, for three of the X-ray sources which fall on the outer edge of the spiral arms (R3, R7, and R8), there is little or no associated CO or H alpha emission. We discuss the origin of the luminous X-ray sources as possibly arising from either massive black holes in binary star systems, supernova remnants, or hot gas associated with star-forming regions. C1 DRAKE UNIV, DEPT PHYS & ASTRON, DES MOINES, IA 50311 USA. VASSAR COLL OBSERV, DEPT PHYS & ASTRON, POUGHKEEPSIE, NY 12601 USA. IBM CORP, THOMAS J WATSON RES CTR, YORKTOWN HTS, NY 10598 USA. SMITHSONIAN ASTROPHYS OBSERV, CAMBRIDGE, MA 02138 USA. NR 51 TC 40 Z9 41 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 1995 VL 438 IS 2 BP 663 EP 671 DI 10.1086/175110 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600014 ER PT J AU MOLNAR, LA MUTEL, RL REID, MJ JOHNSTON, KJ AF MOLNAR, LA MUTEL, RL REID, MJ JOHNSTON, KJ TI INTERSTELLAR SCATTERING TOWARD CYGNUS-X-3 - MEASUREMENTS OF ANISOTROPY AND OF THE INNER SCALE SO ASTROPHYSICAL JOURNAL LA English DT Article DE H II REGIONS; OPEN CLUSTERS AND ASSOCIATIONS, INDIVIDUAL (CYGNUS OB2); POLARIZATION; RADIO CONTINUUM, STARS; STARS, INDIVIDUAL (CYGNUS X-3) ID COMPACT RADIO-SOURCE; X REGION; REFRACTIVE SCINTILLATION; DENSITY-FLUCTUATIONS; VLBI OBSERVATIONS; SUPERBUBBLE; TURBULENCE; GALAXIES; STARS; LINE AB We present 18 cm wavelength VLBI observations of Cyg X-3 obtained 1989 June 6 along with 18 and 20 cm VLA A-array data obtained 1985 February 8. In both data sets, the flux density was relatively high, and the intrinsic source size small compared to the scattering, ideal conditions for a detailed study of interstellar scattering. We find that the scattering disk is anisotropic, with an axial ratio 1.31 +/- 0.02 along position angle 52.degrees 0 +/- 1.degrees 5. This is the first unambiguous measurement of anisotropic scattering in the interstellar medium. We also find a significant break in the phase structure function, the first measurement of a break in any source. The data exclude a steep turbulent spectrum, but are consistent with a shallow turbulent spectrum with an inner scale of 300 km, with a net uncertainty of similar to 50%. We tentatively identify the scattering plasma with the H II region DR 11, for which we estimate a visual extinction of 4 mag, and an emission measure toward Cyg X-3 of 6000 cm(-6) pc. We make the case that DR 11 is part of a shed of H II regions centered on the Cyg OB2 association (which is similar to 1.8 kpc distant) that is 2 degrees (60 pc) in radius and expanding at 10 km s(-1). Our inner scale is consistent with that expected for an H II region, and the amount of scattering is consistent with the emission measure. We discuss how the anisotropy can be used to confirm the identification with DR 11 and to distinguish between different models of turbulence by comparison with measurements of the polarization of starlight along the line of sight. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. USN,RES LAB,WASHINGTON,DC 20375. RP MOLNAR, LA (reprint author), UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242, USA. NR 48 TC 40 Z9 40 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 1995 VL 438 IS 2 BP 708 EP 718 DI 10.1086/175115 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600019 ER PT J AU COOL, AM GRINDLAY, JE BAILYN, CD CALLANAN, PJ HERTZ, P AF COOL, AM GRINDLAY, JE BAILYN, CD CALLANAN, PJ HERTZ, P TI THE FAINT X-RAY SOURCES IN AND OUT OF OMEGA-CENTAURI - X-RAY OBSERVATIONS AND OPTICAL IDENTIFICATIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE GLOBULAR CLUSTERS, INDIVIDUAL (OMEGA CENTAURI); STARS, LATE-TYPE; X-RAYS, STARS ID GLOBULAR-CLUSTERS; CATACLYSMIC VARIABLES; PHOTOMETRY; EMISSION; EXOSAT; STARS; MASS AB We present the results of an observation of the globular duster omega Cen (NGC 5139) with the Einstein high-resolution imager (HRI). Of the five low-luminosity X-ray sources toward omega Cen which were first identified with the Einstein imaging proportional counter (IPC) (Hertz and Grindlay 1983a, b), two are detected in the Einstein HRI observation: IPC sources A and D. These detections provide source positions accurate to 3''4''; the positions are confirmed in a ROSAT HRI observation reported here. Using CCD photometry and spectroscopy, we have identified both sources as foreground dwarf M stars with emission fines (dMe). The chance projection of two dMe stars within similar to 13' of the center of omega Cen is not extraordinary, given the space density of these stellar coronal X-ray sources. We discuss the possible nature of the three as yet unidentified IPC sources toward omega Cen, and consider the constraints that the Einstein observations place on the total population of X-ray sources in this cluster. The integrated luminosity from faint X-ray sources in omega Cen appears to be low relative to both the old open cluster M67 and the post-core-collapse globular, NGC 6397. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. YALE UNIV,DEPT ASTRON,NEW HAVEN,CT 06511. USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. ASSOC UNIV RES ASTRON INC,NATL OPT ASTRON OBSERV,CERRO TOLOLO INTER AMER OBSERV,LA SERENA,CHILE. RP COOL, AM (reprint author), UNIV CALIF BERKELEY,DEPT ASTRON,601 CAMPBELL HALL,BERKELEY,CA 94720, USA. NR 44 TC 14 Z9 14 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 JAN 10 PY 1995 VL 438 IS 2 BP 719 EP 723 DI 10.1086/175116 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600020 ER PT J AU WOODWARD, CE GREENHOUSE, MA GEHRZ, RD PENDLETON, YJ JOYCE, RR VANBUREN, D FISCHER, J JENNERJOHN, NJ KAMINSKI, CD AF WOODWARD, CE GREENHOUSE, MA GEHRZ, RD PENDLETON, YJ JOYCE, RR VANBUREN, D FISCHER, J JENNERJOHN, NJ KAMINSKI, CD TI THE TEMPORAL EVOLUTION OF THE 1-5-MICRON SPECTRUM OF V1974-CYGNI (NOVA-CYGNI 1992) SO ASTROPHYSICAL JOURNAL LA English DT Article DE INFRARED, STARS; NOVAE, CATACLYSMIC VARIABLES; STARS, ABUNDANCES STARS, INDIVIDUAL (NOVA CYGNI 1992) ID INFRARED CORONAL LINES; HERCULIS 1991; NEON NOVA; SPECTROSCOPY; OXYGEN; SPECTROPHOTOMETRY; PHOTOMETRY; MAGNESIUM; EMISSION AB We present 1-5 mu m moderate- and high-resolution infrared spectra of the ONeMg nova V1974 (Nova Cygni 1992) obtained at multiple epochs during an approximate to 500 day period after outburst. During the first 80 days, the spectra exhibited continuum emission from thermal bremsstrahlung (free-free radiation) with prominent recombination line emission from hydrogen, helium, nitrogen, and oxygen. The measured FWHM of these recombination lines suggests that the initial velocity of the ejecta was approximate to 2400-3400 km s(-1). We estimate from the hydrogen recombination line ratios that the density of the ionized shell at this epoch was approximate to 10(9) cm(-3), with an effective electron temperature of approximate to 5 x 10(3) K. As the temporal evolution of the ejecta progressed, the hydrogen and helium lines diminished in intensity, and coronal lines of aluminum, calcium, magnesium, neon, and sulfur appeared by approximate to day 80. The coronal line emission phase persisted for over 400 days. During this epoch, no significant dust formation occurred. We find that the ejecta of V1974 Cyg were overabundant in aluminum with respect to silicon by a factor of approximate to 5 and in magnesium with respect to silicon by a factor of greater than or equal to 3 relative to the solar photosphere. Comparison of our observed overabundances with recent model predictions of elemental synthesis in ONeMg outbursts suggests that the accreted envelope on V1974 Cyg was close to solar composition and that the precursor ONeMg white dwarf had a mass of approximate to 1 M.. C1 SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,ASTROPHYS LAB,MRC 321,WASHINGTON,DC 20560. UNIV MINNESOTA,SCH PHYS & ASTRON,DEPT ASTRON,MINNEAPOLIS,MN 55455. NASA,AMES RES CTR,DIV SPACE SCI,MOFFETT FIELD,CA 94035. KITT PEAK NATL OBSERV,TUCSON,AZ 85726. CALTECH,PASADENA,CA 94305. USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. SAN FRANCISCO STATE UNIV,DEPT PHYS,SAN FRANCISCO,CA 94037. NASA,IRTF,HONOLULU,HI 96822. RP WOODWARD, CE (reprint author), UNIV WYOMING,DEPT PHYS & ASTRON,WYOMING INFRARED OBSERV,LARAMIE,WY 82071, USA. NR 64 TC 22 Z9 22 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 JAN 10 PY 1995 VL 438 IS 2 BP 921 EP 931 DI 10.1086/175134 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600038 ER PT J AU FIELD, GB FERRARA, A AF FIELD, GB FERRARA, A TI THE BEHAVIOR OF FRAGMENTS OF COMET SHOEMAKER-LEVY-9 IN THE ATMOSPHERE OF JUPITER SO ASTROPHYSICAL JOURNAL LA English DT Article DE COMETS, INDIVIDUAL (SHOEMAKER-LEVY 9); PLANETS AND SATELLITES, INDIVIDUAL (JUPITER) AB Studies of the entry of fragments of comet Shoemaker-Levy 9 into the atmosphere of Jupiter give conflicting predictions as to whether or not most of the energy is deposited above the clouds. Using analytical models we find that for a typical fragment radius of 1.5 km, both deceleration and mass loss (ablation) are negligible above the 1 bar level, so most of the energy will be deposited below the clouds, where radiation is blocked from escaping. The bulk of the energy produced by entering fragments will be observable only if the energy deposited below the clouds is transported above the clouds by means other than radiation. We provide new calculations of the flattening of fragments by ram pressure, of radiation-driven evaporative ablation, and of ablation of droplets formed by Kelvin-Helmholtz instability. C1 OSSERV ASTROFIS ARCETRI,I-50125 FLORENCE,ITALY. RP FIELD, GB (reprint author), HARVARD UNIV,SMITHSONIAN CTR ASTROPHYS,MS51,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 16 TC 25 Z9 25 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 1995 VL 438 IS 2 BP 957 EP 967 DI 10.1086/175137 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600041 ER PT J AU YOSHINO, K STARK, G ESMOND, JR SMITH, PL ITO, K MATSUI, T AF YOSHINO, K STARK, G ESMOND, JR SMITH, PL ITO, K MATSUI, T TI HIGH-RESOLUTION ABSORPTION CROSS-SECTION MEASUREMENTS OF SUPERSONIC JET-COOLED CARBON-MONOXIDE BETWEEN 92.5 AND 97.4 NANOMETERS SO ASTROPHYSICAL JOURNAL LA English DT Article DE MOLECULAR DATA; TECHNIQUES, SPECTROSCOPIC; ULTRAVIOLET, GENERAL ID VUV SPECTROSCOPIC FACILITY; 115 NM; INTERSTELLAR CO; PHOTODISSOCIATION; SPECTRA; PHOTOABSORPTION; ISOTOPES; STATES; BANDS AB High-resolution photoabsorption cross sections for eight CO bands, at wavelengths between 92.5 nm and 97.4 nm, have been measured in a supersonic jet-cooled source (approximate to 20 K) at the Photon Factory synchrotron radiation facility. New integrated cross sections are reported for four bands between 92.5 nn and 94.2 mm. A low-temperature spectrum of the W(1)-X(0) band (95.6 nm), which was used to determine the absorbing CO column densities, is also presented. Additional jet-cooled cross section measurements were made on the L(0)-X(0) K(0)-X(0), and W(0)-X(0) bands (96.7-97.4 nm) which verify previously published results. A self-consistent set of band oscillator strengths is presented for the eight bands studied. C1 WELLESLEY COLL,DEPT PHYS,WELLESLEY,MA 02181. NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN. RP YOSHINO, K (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 27 TC 10 Z9 10 U1 2 U2 3 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 10 PY 1995 VL 438 IS 2 BP 1013 EP 1016 DI 10.1086/175142 PN 1 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA906 UT WOS:A1995QA90600046 ER PT J AU KERRICK, AD AKERLOF, CW BILLER, SD BUCKLEY, JH CAWLEY, MF CHANTELL, M CONNAUGHTON, V FEGAN, DJ FENNELL, S GAIDOS, JA HILLAS, AM LAMB, RC LEWIS, DA MEYER, DI MCENERY, J MOHANTY, G QUINN, J ROVERO, AC ROSE, HJ SCHUBNELL, MS SEMBROSKI, G URBAN, M WATSON, AA WEEKES, TC WEST, M WILSON, C ZWEERINK, J AF KERRICK, AD AKERLOF, CW BILLER, SD BUCKLEY, JH CAWLEY, MF CHANTELL, M CONNAUGHTON, V FEGAN, DJ FENNELL, S GAIDOS, JA HILLAS, AM LAMB, RC LEWIS, DA MEYER, DI MCENERY, J MOHANTY, G QUINN, J ROVERO, AC ROSE, HJ SCHUBNELL, MS SEMBROSKI, G URBAN, M WATSON, AA WEEKES, TC WEST, M WILSON, C ZWEERINK, J TI OUTBURST OF TEV PHOTONS FROM MARKARIAN-421 SO ASTROPHYSICAL JOURNAL LA English DT Article DE BL LACERTAE, GENERAL; BL LACERTAE OBJECTS, INDIVIDUAL (MARKARIAN-421); GAMMA-RAYS, OBSERVATIONS ID GAMMA-RAYS; X-RAY; VARIABILITY; ENERGIES; QUASARS AB Markarian 421, an active galactic nucleus (AGN) of the BL Lacertae type, is the closest EGRET-detected AGN. It has been monitored by the Whipple Observatory very high energy gamma-ray telescope since its discovery at TeV energies (Punch et al. 1992), for approximately 90 nights, totaling 130 hours of observation. Observations from 1993 December 23 to 1994 May 10 showed an average source flux only half that of its 1992 discovery level. However, observations on 1994 May 14 and 15 show an increase in flux above this quiescent level by a factor of approximately 10. The timescale of this increase provides the best geometric constraint on the extent of TeV photon emission regions within AGNs. The observation of the high TeV flux occurred 1 day prior to the observation by ASCA of a very high 2-10 keV X-ray flux (Takahashi et al. 1994). This strong TeV outburst is reminiscent of the behavior seen for the stronger 100 MeV-GeV EGRET sources (e.g., 3C 279; Kniffen et al. 1993) but was not anticipated in view of the fact that the six EGRET observations of Mrk 421 from 1991 June to 1993 July (Lin et al. 1994) showed no evidence for variability. C1 UNIV MICHIGAN,DEPT PHYS,ANN ARBOR,MI 48109. UNIV LEEDS,DEPT PHYS,LEEDS LS2 9JT,W YORKSHIRE,ENGLAND. ST PATRICKS COLL,DEPT PHYS,MAYNOOTH,KILDARE,IRELAND. NATL UNIV IRELAND UNIV COLL DUBLIN,DEPT PHYS,DUBLIN 4,IRELAND. PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907. ECOLE POLYTECH,LPHNE,F-91128 PALAISEAU,FRANCE. HARVARD UNIV,SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,AMADO,AZ 85645. RP KERRICK, AD (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS & ASTRON,AMES,IA 50011, USA. RI McEnery, Julie/D-6612-2012 NR 30 TC 65 Z9 66 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 JAN 10 PY 1995 VL 438 IS 2 BP L59 EP L62 DI 10.1086/187715 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA907 UT WOS:A1995QA90700003 ER PT J AU PRESTWICH, AH GUIMOND, SJ LUGINBUHL, CB JOY, M AF PRESTWICH, AH GUIMOND, SJ LUGINBUHL, CB JOY, M TI ROSAT HRI IMAGES OF ABELL-85 AND ABELL-496 - EVIDENCE FOR HOMOGENEITIES IN COOLING FLOWS SO ASTROPHYSICAL JOURNAL LA English DT Article DE COOLING FLOWS; GALAXIES, CLUSTERS, GENERAL; INTERGALACTIC MEDIUM; X-RAYS, GALAXIES ID X-RAY; FILAMENTS; GALAXIES AB We present ROSAT high-resolution images of two clusters of galaxies with cooling flows, Abell 496 and Abell 85. In these clusters, X-ray emission on small scales above the general cluster emission is significant at the 3 sigma level. There is no evidence for optical counterparts. If real, the enhancements may be associated with clumps of gas at a lower temperature and higher density than the ambient medium, or hotter, denser gas perhaps compressed by magnetic fields. These observations can be used to test models of how thermal instabilities form and evolve in cooling flows. C1 USN OBSERV,FLAGSTAFF STN,FLAGSTAFF,AZ 86002. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. RP PRESTWICH, AH (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138, USA. NR 12 TC 14 Z9 15 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 JAN 10 PY 1995 VL 438 IS 2 BP L71 EP & DI 10.1086/187718 PN 2 PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA907 UT WOS:A1995QA90700006 ER PT J AU DUKE, NC AF DUKE, NC TI GENETIC DIVERSITY, DISTRIBUTIONAL BARRIERS AND RAFTING CONTINENTS - MORE THOUGHTS ON THE EVOLUTION OF MANGROVES SO HYDROBIOLOGIA LA English DT Article; Proceedings Paper CT International Conference on Asia-Pacific Symposium on Mangrove Ecosystems CY SEP 01-03, 1993 CL HONG KONG UNIV SCI & TECHNOL, HONG KONG, HONG KONG SP HONG KONG CROUCHER FDN, CALTEX GREEN FUND, HONG KONG ELECT CO LTD, INT SOC MANGROVE ECOSYST, WORLD WIDE FUND NAT HONG KONG HO HONG KONG UNIV SCI & TECHNOL DE MANGROVE; AVICENNIA; EVOLUTION; FOSSILS; POLLEN ID AVICENNIA-MARINA; ORIGIN; BIOGEOGRAPHY; ANGIOSPERMS; PROPAGULES; SALINITY; GROWTH AB Without continental drift, the diversity and distribution of many species, including mangrove plants, would be very different today. First, there would be fewer pantropic genera and many more endemics. Second, their characteristics would not be as common and widespread as some are today. Continental drift has brought about the massive mixing and dispersal of genes in geologically recent times, greatly enhancing the evolutionary process; particularly for flowering plants - the angiosperms, which evolved during this period. Mangrove plants are comprised of approximately 70 species from 20 quite different angiosperm families. Most tars are characterized by special physiological abilities and structural forms, enabling them to live in both seasonally fluctuating saline conditions, and water-saturated soils. Their occurrence is mostly tropical, perhaps because of harsh physiological conditions of intertidal habitats; but distributions of specific taxa do not fully concur with the idea of a completely tropical evolution, at least for some important species. At least one genus of mangrove tree, Avicennia, occurs around the world, chiefly in tropical estuarine habitats, although they also range into temperate latitudes, especially in the south. Around the world, there are no more than ten species of Avicennia recognised today, but their diagnostic determinants were inadequate prior to recent studies using both numerical analyses of morphological parameters and isozymes. Such analyses significantly reduced the number of apparent species, notably around Australia, and provided a basis for the revision of distributional records throughout the Indo West Pacific region. One species, A. marina, was found to be widespread and morphologically variable with genes divided into characteristic groupings of at least three geographic areas in the region. Based on these findings, there are several novel inferences to be made regarding the evolution of this genus. A western Gondwanan origin is proposed, with subsequent radiation of several taxa facilitated via the tectonic dispersal of southern continental fragments. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RI Duke, Norman/K-5729-2013 OI Duke, Norman/0000-0003-2081-9120 NR 47 TC 46 Z9 50 U1 1 U2 17 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0018-8158 J9 HYDROBIOLOGIA JI Hydrobiologia PD JAN 6 PY 1995 VL 295 IS 1-3 BP 167 EP 181 DI 10.1007/BF00029124 PG 15 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA QH487 UT WOS:A1995QH48700022 ER PT J AU MARCAIDE, JM ALBERDI, A ROS, E DIAMOND, P SCHMIDT, B SHAPIRO, II BAATH, L DAVIS, RJ DEBRUYN, AG ELOSEGUI, P GUIRADO, JC JONES, DL KRICHBAUM, TP MANTOVANI, F PRESTON, RA RATNER, MI RIUS, A ROGERS, AEE SCHILIZZI, RT TRIGILIO, C WHITNEY, AR WITZEL, A ZENSUS, A AF MARCAIDE, JM ALBERDI, A ROS, E DIAMOND, P SCHMIDT, B SHAPIRO, II BAATH, L DAVIS, RJ DEBRUYN, AG ELOSEGUI, P GUIRADO, JC JONES, DL KRICHBAUM, TP MANTOVANI, F PRESTON, RA RATNER, MI RIUS, A ROGERS, AEE SCHILIZZI, RT TRIGILIO, C WHITNEY, AR WITZEL, A ZENSUS, A TI DISCOVERY OF SHELL-LIKE RADIO-STRUCTURE IN SN1993J SO NATURE LA English DT Article ID SUPERNOVAE; EMISSION; REMNANTS; MODEL AB SUPERNOVA explosions are poorly understood, partly because of difficulties in modelling them theoretically(1), and partly because there have been no supernovae observed in our Galaxy since the invention of the telescope. But the recent discovery(2) of supernova SN1993J in the nearby galaxy M81 offers an opportunity to investigate the evolution of the remnant, and its interaction with the surrounding interstellar medium, at high resolution. Here we present radio observations of SN1993J, made using very-long-baseline interferometry, which show the development of a shell structure. This 8-month-old radio shell is the youngest ever discovered in a supernova. The data suggest that the supernova explosion and the expanding shell of the remnant have nearly spherical symmetry, with small deviations where some parts of the shell are brighter than others. If these deviations arise because of variations in the density of the shell, this may reconcile earlier reports of symmetric radio emission(3) with the observed optical asymmetry(4,5), as the density variations could easily cause the latter. We infer that the radio emission is generated at the interface(6-9), where the surrounding gas is shocked by the ejecta. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. CSIC,INST ASTROFIS ANDALUCIA,E-18080 GRANADA,SPAIN. NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. ONSALA SPACE OBSERV,S-43992 ONSALA,SWEDEN. UNIV MANCHESTER,NUFFIELD RADIO ASTRON LABS,MACCLESFIELD SK11 9DL,CHESHIRE,ENGLAND. NETHERLANDS FDN RES ASTRON,7990 AA DWINGELOO,NETHERLANDS. CALTECH,JET PROP LAB,PASADENA,CA 91109. MAX PLANCK INST RADIOASTRON,D-53010 BONN,GERMANY. CNR,IST RADIOASTRON,I-40129 BOLOGNA,ITALY. FAC CIENCIAS MATEMAT MADRID,INST ASTRON & GEODESIA,E-28040 MADRID,SPAIN. JOINT INST VLBI EUROPE,7790 AA DWINGELOO,NETHERLANDS. CNR,IST RADIOASTRON,NOTO,ITALY. MIT,HAYSTACK OBSERV,WESTFORD,MA 01886. RP MARCAIDE, JM (reprint author), UNIV VALENCIA,DEPT ASTRON,E-46100 BURJASSOT,SPAIN. OI Schmidt, Brian/0000-0001-6589-1287; Ros, Eduardo/0000-0001-9503-4892 NR 23 TC 43 Z9 43 U1 0 U2 5 PU MACMILLAN MAGAZINES LTD PI LONDON PA 4 LITTLE ESSEX STREET, LONDON, ENGLAND WC2R 3LF SN 0028-0836 J9 NATURE JI Nature PD JAN 5 PY 1995 VL 373 IS 6509 BP 44 EP 45 DI 10.1038/373044a0 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA QA239 UT WOS:A1995QA23900048 ER PT J AU MACINTYRE, IG REID, RP AF MACINTYRE, IG REID, RP TI CRYSTAL ALTERATION IN A LIVING CALCAREOUS ALGA (HALIMEDA) - IMPLICATIONS FOR STUDIES IN SKELETAL DIAGENESIS SO JOURNAL OF SEDIMENTARY RESEARCH SECTION A-SEDIMENTARY PETROLOGY AND PROCESSES LA English DT Article ID EASTERN JAVA SEA; CALCIFICATION; CARBONATE; MUD; PHOTOSYNTHESIS; INDONESIA; BIOHERMS; BAHAMAS; HISTORY; GROWTH AB Although calcification processes and the carbonate deposits in Halimeda have been described in many papers, previous workers have failed to recognize that a reorganization of crystals occurs within living individuals of common species of this alga. Detailed SEM observations of live Halimeda incrassata collected in Biscayne Bay, Florida, show that calcification occurs in two basic stages: (1) uniform-sized, small aragonite needles, 1-3 mu m long, are precipitated in inter-utricle spaces and (2) these needles alter to anhedral equant aragonite approximately 0.1-0.5 mu m in size. In addition, large aragonite needles, up to 15 mu m long, are precipitated in open spaces, typically in the inner cortical and medullary regions during the second stage of calcification. Micritization of original skeletal needles in H. incrassata is extensive but is not readily detected with the petrographic microscope. Preliminary observations of another common species, H. opuntia, suggest that similar alteration processes also occur in this alga. Early micritization in live algae may be an important process of skeletal alteration that has not previously been recognized. This early alteration must be distinguished from postdepositional diagenetic processes in the sediment. C1 UNIV MIAMI,ROSENSTIEL SCH MARINE & ATMOSPHER SCI,MIAMI,FL 33149. RP MACINTYRE, IG (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT PALEOBIOL,WASHINGTON,DC 20560, USA. NR 50 TC 61 Z9 63 U1 1 U2 3 PU SEPM-SOC SEDIMENTARY GEOLOGY PI TULSA PA 1731 E 71ST STREET, TULSA, OK 74136-5108 SN 1073-130X J9 J SEDIMENT RES A JI J. Sediment. Res. Sect. A-Sediment. Petrol. Process. PD JAN 2 PY 1995 VL 65 IS 1 BP 143 EP 153 PG 11 WC Geology SC Geology GA QE051 UT WOS:A1995QE05100016 ER PT S AU Cooper, J Estep, M AF Cooper, J Estep, M GP APPA - ASSOC HIGHER EDUC FACILITIES OFFICERS TI Linking supervision to organizational success SO 1995 EDUCATIONAL CONFERENCE & 82ND ANNUAL MEETING, PROCEEDINGS SE ANNUAL MEETING OF THE APPA: THE ASSOCIATION OF HIGHER EDUCATION FACILITIES OFFICERS LA English DT Proceedings Paper CT 1995 Educational Conference and 82nd Annual Meeting of the APPA - the Association-of-Higher-Education-Facilities-Officers CY JUL 16-18, 1995 CL PHILADELPHIA, PA SP APPA, Assoc Higher Educ Facil Officers C1 SMITHSONIAN INST,OFF PLANT SERV,WASHINGTON,DC 20560. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSOC HIGHER EDUCATION FACILITIES OFFICERS PI ALEXANDRIA PA 1446 DUKE ST, ALEXANDRIA, VA 22314-3492 SN 0738-3835 BN 0-913359-87-4 J9 ANN M APPA PY 1995 BP 189 EP 197 PG 9 WC Education & Educational Research SC Education & Educational Research GA BF40B UT WOS:A1995BF40B00015 ER PT B AU SCHILD, R THOMSON, DJ AF SCHILD, R THOMSON, DJ GP IEEE TI COSMOLOGY WITH GRAVITATIONAL LENSES - TIME DELAY AND MICROLENSING SO 1995 INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING - CONFERENCE PROCEEDINGS, VOLS 1-5 LA English DT Proceedings Paper CT 1995 International Conference on Acoustics, Speech, and Signal Processing CY MAY 09-12, 1995 CL DETROIT, MI SP IEEE, Signal Proc Soc C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2432-3 J9 INT CONF ACOUST SPEE PY 1995 BP 2891 EP 2894 PG 4 WC Acoustics; Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Optics; Telecommunications SC Acoustics; Automation & Control Systems; Computer Science; Engineering; Optics; Telecommunications GA BD41X UT WOS:A1995BD41X00722 ER PT B AU Connaughton, V Akerlof, CW Biller, S Bird, D Buckley, J CarterLewis, DA Cawley, MF Chantell, M Fegan, DJ Gaidos, J Hillas, AM Lamb, RC Kerrick, AD Lessard, R McEnery, J Meyer, DI Mohanty, G Quinn, J Rose, HJ Rovero, AC Sembroski, G Schubnell, MS Weekes, TC Wilson, C Zweerink, J AF Connaughton, V Akerlof, CW Biller, S Bird, D Buckley, J CarterLewis, DA Cawley, MF Chantell, M Fegan, DJ Gaidos, J Hillas, AM Lamb, RC Kerrick, AD Lessard, R McEnery, J Meyer, DI Mohanty, G Quinn, J Rose, HJ Rovero, AC Sembroski, G Schubnell, MS Weekes, TC Wilson, C Zweerink, J GP INT UNION PURE & APPL PHYS TI Searches for TeV gamma-rays in classical gamma-ray bursts SO 24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 2: OG SESSIONS (OG 1 - OG 6) - CONTRIBUTED PAPERS LA English DT Proceedings Paper CT 24th International Cosmic Ray Conference (XXIV ICRC) CY AUG 28-SEP 08, 1995 CL ROME, ITALY SP Minist Univ Ric Sci, Ist Nazl Fis Nucl, Consiglio Nazl Ric, Univ Sapienza, Roma, Univ Roma 3, Accad Nazl Lincei, Int Union Pure & Appl Phys, Int Ctr Theoret Phys, Commiss European Communities, DG XII, ICSC, World Lab, Comune Roma, Prov Roma, Banca Roma, PolHiTech, CAEN RP Connaughton, V (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,CAMBRIDGE,MA 02138, USA. RI McEnery, Julie/D-6612-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU ARGALIA EDITORE DELLE ARTI GRAFICHE EDITORIALI SRL PI URBINO PA 61029 URBINO, ITALY PY 1995 BP 96 EP 99 PG 4 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BG94C UT WOS:A1995BG94C00025 ER PT B AU Quinn, J Akerlof, CW Biller, S Bird, D Boyle, P Bussons, J Buckley, J CarterLewis, DA Cawley, MF Catanese, M Connaughton, V Fegan, DJ Gaidos, J Hillas, AM Lamb, RC Kerrick, AD Krennrich, F Lessard, R McEnery, J Meyer, DI Mohanty, G Rodgers, A Rose, HJ Rovero, AC Sembroski, G Schubnell, MS Weekes, TC Wilson, C Zweerink, J AF Quinn, J Akerlof, CW Biller, S Bird, D Boyle, P Bussons, J Buckley, J CarterLewis, DA Cawley, MF Catanese, M Connaughton, V Fegan, DJ Gaidos, J Hillas, AM Lamb, RC Kerrick, AD Krennrich, F Lessard, R McEnery, J Meyer, DI Mohanty, G Rodgers, A Rose, HJ Rovero, AC Sembroski, G Schubnell, MS Weekes, TC Wilson, C Zweerink, J GP INT UNION PURE & APPL PHYS TI Upper limits on TeV gamma-ray emission from EGRET-detected GeV gamma-ray sources. SO 24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 2: OG SESSIONS (OG 1 - OG 6) - CONTRIBUTED PAPERS LA English DT Proceedings Paper CT 24th International Cosmic Ray Conference (XXIV ICRC) CY AUG 28-SEP 08, 1995 CL ROME, ITALY SP Minist Univ Ric Sci, Ist Nazl Fis Nucl, Consiglio Nazl Ric, Univ Sapienza, Roma, Univ Roma 3, Accad Nazl Lincei, Int Union Pure & Appl Phys, Int Ctr Theoret Phys, Commiss European Communities, DG XII, ICSC, World Lab, Comune Roma, Prov Roma, Banca Roma, PolHiTech, CAEN AB The Whipple Observatory Gamma Ray Telescope has been used to observe 30 of the sources listed in the First EGRET Catalog of gamma-ray sources. Flux limits for 17 of these objects are reported here. The energy threshold was 300 GeV and the flux sensitivity was typically 10% that of the Crab flux. RP Quinn, J (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,CAMBRIDGE,MA 02138, USA. RI McEnery, Julie/D-6612-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU ARGALIA EDITORE DELLE ARTI GRAFICHE EDITORIALI SRL PI URBINO PA 61029 URBINO, ITALY PY 1995 BP 366 EP 369 PG 4 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BG94C UT WOS:A1995BG94C00094 ER PT B AU Chantell, M Akerlof, CW Buckley, J CarterLewis, DA Cawley, MF Connaughton, V Fegan, DJ Fleury, P Gaidos, J Hillas, AM Lamb, RC Pare, E Rose, HJ Rovero, AC Sarazin, X Sembroski, G Schubnell, MS Urban, M Weekes, TC Wilson, C AF Chantell, M Akerlof, CW Buckley, J CarterLewis, DA Cawley, MF Connaughton, V Fegan, DJ Fleury, P Gaidos, J Hillas, AM Lamb, RC Pare, E Rose, HJ Rovero, AC Sarazin, X Sembroski, G Schubnell, MS Urban, M Weekes, TC Wilson, C GP INT UNION PURE & APPL PHYS TI Gamma-ray observations in moonlight with the Whipple atmospheric Cherenkov hybrid camera SO 24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 2: OG SESSIONS (OG 1 - OG 6) - CONTRIBUTED PAPERS LA English DT Proceedings Paper CT 24th International Cosmic Ray Conference (XXIV ICRC) CY AUG 28-SEP 08, 1995 CL ROME, ITALY SP Minist Univ Ric Sci, Ist Nazl Fis Nucl, Consiglio Nazl Ric, Univ Sapienza, Roma, Univ Roma 3, Accad Nazl Lincei, Int Union Pure & Appl Phys, Int Ctr Theoret Phys, Commiss European Communities, DG XII, ICSC, World Lab, Comune Roma, Prov Roma, Banca Roma, PolHiTech, CAEN AB The performance of a hybrid atmospheric Cherenkov camera consisting of the Whipple visible camera with a 300-500 nm blocking filter is described; it is a practical tool for extending the duty cycle of the atmospheric Cherenkov technique. It has been calibrated on the Crab Nebula and used to observe Markarian 421. RP Chantell, M (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ARGALIA EDITORE DELLE ARTI GRAFICHE EDITORIALI SRL PI URBINO PA 61029 URBINO, ITALY PY 1995 BP 544 EP 547 PG 4 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BG94C UT WOS:A1995BG94C00141 ER PT B AU Chantell, MC Sarazin, X Fleury, P Harris, K Kerrick, A Pare, E Punch, M Urban, M Vacanti, G Weekes, TC AF Chantell, MC Sarazin, X Fleury, P Harris, K Kerrick, A Pare, E Punch, M Urban, M Vacanti, G Weekes, TC GP INT UNION PURE & APPL PHYS TI The use of a UV camera in the atmospheric Cerenkov technique SO 24TH INTERNATIONAL COSMIC RAY CONFERENCE, VOL 2: OG SESSIONS (OG 1 - OG 6) - CONTRIBUTED PAPERS LA English DT Proceedings Paper CT 24th International Cosmic Ray Conference (XXIV ICRC) CY AUG 28-SEP 08, 1995 CL ROME, ITALY SP Minist Univ Ric Sci, Ist Nazl Fis Nucl, Consiglio Nazl Ric, Univ Sapienza, Roma, Univ Roma 3, Accad Nazl Lincei, Int Union Pure & Appl Phys, Int Ctr Theoret Phys, Commiss European Communities, DG XII, ICSC, World Lab, Comune Roma, Prov Roma, Banca Roma, PolHiTech, CAEN AB The Atmospheric Cerenkov Technique for gamma-astronomy is shown to be feasible with a UV camera, by moon light. The Whipple telescope has been used as the reflector and the Crab nebulae as the standard gamma-beam. Our energy threshold is 1.2 TeV to be compared to 0.4 TeV in the visible. RP Chantell, MC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,AMADO,AZ 85645, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ARGALIA EDITORE DELLE ARTI GRAFICHE EDITORIALI SRL PI URBINO PA 61029 URBINO, ITALY PY 1995 BP 560 EP 563 PG 4 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BG94C UT WOS:A1995BG94C00145 ER PT J AU ROUSE, GW AF ROUSE, GW TI IS SPERM ULTRASTRUCTURE USEFUL IN POLYCHAETE SYSTEMATICS - AN EXAMPLE USING 20 SPECIES OF THE FABRICIINAE (POLYCHAETA, SABELLIDAE) SO ACTA ZOOLOGICA LA English DT Article ID SPERMATHECAE; SPERMATOZOA; AUSTRALIA; ANNELIDA AB The utility of sperm morphology in the systematics of polychaetes has been questioned in the past. This doubt stems from a problem with methodology, not with sperm morphology. It is argued that sperm characters used in combination with other morphological features have utility at various hierarchical levels, As a test of this proposition males in species from each of the following 10 fabriciin genera: Augeneriella, Fabricia, Fabriciola, Fabricinuda, Manayunkia, Novafabricia, Parafabricia, Pseudofabricia, Pseudofabriciola and an undescribed new Genus A (Fitzhugh et al., in preparation), were examined in order to provide new characters for phylogenetic systematic studies. All species were found to have a dorsal sperm duct running beneath the faecal groove of the thoracic region. No sabellin sabellids or serpulids have this duct. The above Fabriciinae have spermatids developing in large clusters of several hundred cells. Serpulids and sabellins nearly always have sperm developing in tetrads or small groups. Fabriciins studied also have a sperm structure distinct from the Sabellinae and the Serpulidae. Proposed synapomorphies for the members of the Fabriciinae, based on sperm structure, include (1) a thick glycocalyx over the plasma membrane; (2) a distinctive nuclear projection, with an anterior thickening of the nuclear membrane; (3) a thickened, spiraling ridge of nuclear membrane; (4) an extra-axonemal sheath and (5) a unique sheath of mitochondrial material in the midpiece. Within the sub-family there were differences among species in sperm structure. This variability involves acrosome morphology; the structure of the sperm nucleus and nuclear projection; the spiral of thickened nuclear membrane; the structure of the extra-axonemal sheath; the mitochondrial sheath. The monophyly of the Fabriciinae (sensu Fitzhugh, 1991, 1993) is well supported by this analysis. The status of Caobangia is still unresolved and a close examination of this genus is warranted. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560. RI Rouse, Greg/F-2611-2010 OI Rouse, Greg/0000-0001-9036-9263 NR 52 TC 30 Z9 30 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0001-7272 J9 ACTA ZOOL-STOCKHOLM JI Acta Zool. PD JAN PY 1995 VL 76 IS 1 BP 57 EP 74 PG 18 WC Zoology SC Zoology GA QK736 UT WOS:A1995QK73600009 ER PT B AU Wang, Z Helou, G Lu, NY Cole, D AF Wang, Z Helou, G Lu, NY Cole, D BE Haas, MR Davidson, JA Erickson, EF TI KAO 60-micron imaging observations of galaxies with active star formation SO AIRBORNE ASTRONOMY SYMPOSIUM ON THE GALACTIC ECOSYSTEM: FROM GAS TO STARS TO DUST SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Airborne Astronomy Symposium on the Galactic Ecosystem - From Gas to Stars to Dust CY JUL 05-08, 1994 CL NASA AMES RES CTR, MOFFETT FIELD, CA SP NASA, SETI Inst, Contraves Inc, Pittsburg, E Syst, Greenville, Hughes Aircraft Co, El Segundo, Sterling Software, Palo Alto HO NASA AMES RES CTR C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-92-9 J9 ASTR SOC P PY 1995 VL 73 BP 199 EP 202 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33X UT WOS:A1995BE33X00032 ER PT B AU Strelnitski, VS Smith, HA Haas, MR Colgan, SWJ Erickson, EF Geis, N Hollenbach, DJ Townes, CH AF Strelnitski, VS Smith, HA Haas, MR Colgan, SWJ Erickson, EF Geis, N Hollenbach, DJ Townes, CH BE Haas, MR Davidson, JA Erickson, EF TI A search for hydrogen lasers in MWC 349 from the KAO SO AIRBORNE ASTRONOMY SYMPOSIUM ON THE GALACTIC ECOSYSTEM: FROM GAS TO STARS TO DUST SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Airborne Astronomy Symposium on the Galactic Ecosystem - From Gas to Stars to Dust CY JUL 05-08, 1994 CL NASA AMES RES CTR, MOFFETT FIELD, CA SP NASA, SETI Inst, Contraves Inc, Pittsburg, E Syst, Greenville, Hughes Aircraft Co, El Segundo, Sterling Software, Palo Alto HO NASA AMES RES CTR C1 SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,ASTROPHYS LAB,WASHINGTON,DC 20560. RI Colgan, Sean/M-4742-2014 NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-92-9 J9 ASTR SOC P PY 1995 VL 73 BP 271 EP 274 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33X UT WOS:A1995BE33X00043 ER PT B AU Melnick, GJ AF Melnick, GJ BE Haas, MR Davidson, JA Erickson, EF TI The Submillimeter Wave Astronomy Satellite SO AIRBORNE ASTRONOMY SYMPOSIUM ON THE GALACTIC ECOSYSTEM: FROM GAS TO STARS TO DUST SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Airborne Astronomy Symposium on the Galactic Ecosystem - From Gas to Stars to Dust CY JUL 05-08, 1994 CL NASA AMES RES CTR, MOFFETT FIELD, CA SP NASA, SETI Inst, Contraves Inc, Pittsburg, E Syst, Greenville, Hughes Aircraft Co, El Segundo, Sterling Software, Palo Alto HO NASA AMES RES CTR C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-92-9 J9 ASTR SOC P PY 1995 VL 73 BP 673 EP 678 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33X UT WOS:A1995BE33X00108 ER PT B AU Melnick, GJ AF Melnick, GJ BE Haas, MR Davidson, JA Erickson, EF TI SWAS mission summary SO AIRBORNE ASTRONOMY SYMPOSIUM ON THE GALACTIC ECOSYSTEM: FROM GAS TO STARS TO DUST SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Airborne Astronomy Symposium on the Galactic Ecosystem - From Gas to Stars to Dust CY JUL 05-08, 1994 CL NASA AMES RES CTR, MOFFETT FIELD, CA SP NASA, SETI Inst, Contraves Inc, Pittsburg, E Syst, Greenville, Hughes Aircraft Co, El Segundo, Sterling Software, Palo Alto HO NASA AMES RES CTR C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-92-9 J9 ASTR SOC P PY 1995 VL 73 BP 689 EP 690 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33X UT WOS:A1995BE33X00114 ER PT J AU OLIVER, WA PEDDER, AEH WEILAND, RJ VANUFFORD, AQ AF OLIVER, WA PEDDER, AEH WEILAND, RJ VANUFFORD, AQ TI MIDDLE PALEOZOIC CORALS FROM THE SOUTHERN SLOPE OF THE CENTRAL RANGES OF IRIAN-JAYA, INDONESIA SO ALCHERINGA LA English DT Article DE IRIAN JAYA; INDONESIA; DEVONIAN; FRASNIAN; CORALS; BIOGEOGRAPHY AB Rugose and tabulate corals of Frasnian (early Late Devonian) and pre-Frasnian Devonian and Silurian(?) ages from Irian Jaya (western New Guinea), Indonesia, art described and illustrated for the first time. The Frasnian corals are the most important; they occur in the uppermost part of the Modio Formation (redefined), are well-preserved and suggest a biogeographic linkage to Western Australia. The source carbonates may represent a reef environment. The pre-Frasnian corals are from stream cobbles at two localities. They indicate the presence or former presence of a more complete Middle Palaeozoic sequence than was previously known in Irian Jaya. C1 US NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560. GEOL SURVEY CANADA,CALGARY,AB T2L 2A7,CANADA. UNIV TEXAS,DEPT GEOL SCI,AUSTIN,TX 78712. RP OLIVER, WA (reprint author), US GEOL SURVEY,MRC 137,WASHINGTON,DC 20560, USA. NR 24 TC 6 Z9 6 U1 0 U2 0 PU GEOLOGICAL SOC AUST INC PI SYDNEY NSW PA 606 ANA HOUSE 301 GEORGE STREET, SYDNEY NSW 2000, AUSTRALIA SN 0311-5518 J9 ALCHERINGA JI Alcheringa PY 1995 VL 19 IS 1-2 BP 1 EP 15 DI 10.1080/03115519508619094 PG 15 WC Paleontology SC Paleontology GA RF303 UT WOS:A1995RF30300001 ER PT J AU LELLINGER, DB AF LELLINGER, DB TI KORNAS,JAN(1923-1994) - OBITUARY SO AMERICAN FERN JOURNAL LA English DT Item About an Individual RP LELLINGER, DB (reprint author), SMITHSONIAN INST,DEPT BOT,MRC-166,WASHINGTON,DC 20560, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER FERN SOC INC PI ATLANTA PA RICHAR L HAUKE 456 MCGILL PL, ATLANTA, GA 30312-1049 SN 0002-8444 J9 AM FERN J JI Am. Fern J. PD JAN-MAR PY 1995 VL 85 IS 1 BP 36 EP 36 PG 1 WC Plant Sciences SC Plant Sciences GA RJ122 UT WOS:A1995RJ12200003 ER PT J AU VANDIVER, PB TUMOSA, CS AF VANDIVER, PB TUMOSA, CS TI XERORADIOGRAPHIC IMAGING SO AMERICAN JOURNAL OF ARCHAEOLOGY LA English DT Article RP VANDIVER, PB (reprint author), SMITHSONIAN INST,CONSERVAT ANALT LAB,WASHINGTON,DC 20560, USA. NR 12 TC 4 Z9 4 U1 0 U2 0 PU ARCHAEOLOGICAL INST PI NEW YORK PA 135 WILLIAM ST, NEW YORK, NY 10038-3805 SN 0002-9114 J9 AM J ARCHAEOL JI Am. J. Archaeol. PD JAN PY 1995 VL 99 IS 1 BP 121 EP 124 PG 4 WC Archaeology SC Archaeology GA QH140 UT WOS:A1995QH14000018 ER PT J AU STANYON, R TOFANELLI, S MORESCALCHI, MA AGORAMOORTHY, G RYDER, OA WIENBERG, J AF STANYON, R TOFANELLI, S MORESCALCHI, MA AGORAMOORTHY, G RYDER, OA WIENBERG, J TI CYTOGENETIC ANALYSIS SHOWS EXTENSIVE GENOMIC REARRANGEMENTS BETWEEN RED HOWLER (ALOUATTA-SENICULUS, LINNAEUS) SUBSPECIES SO AMERICAN JOURNAL OF PRIMATOLOGY LA English DT Article DE NEW WORLD MONKEYS; PLATYRRHINI; PHYLOGENY; SPECIATION; CHROMOSOMES; Y-AUTOSOME TRANSLOCATION ID OWL MONKEY; CHROMOSOMAL EVOLUTION; PLATYRRHINI; AOTUS; KARYOTYPES; BELZEBUL; PRIMATES; REGIONS; SAIMIRI AB A comparison of the G-banded karyotypes of two red howler subspecies, Alouatta seniculus arctoidea and A. s. sara, showed that they differed by at least 14 chromosomal rearrangements. Genomic reshuffling is so great that homologs between subspecies could not be found for some chromosome, while the assignment of homology for other chromosomes remains uncertain. The two red howlers, however, share an unusual X(1)X(2)Y(1)Y(2)/X(1)X(1)X(2)X(2) sex-chromosome system that resulted from a Y-autosome translocation, probably in a common ancestor. The great chromosomal variability resulting from rapid chromosomal evolution in howlers indicates that cytogenetic data could make an important contribution to resolving phylogenetic and conservation problems in this group of highly conspicuous New World Monkeys. (C) 1995 Wiley-Liss, Inc. C1 UNIV FLORENCE,INST ANTHROPOL,FLORENCE,ITALY. SMITHSONIAN INST,NATL ZOOL PK,CONSERVAT RES CTR,WASHINGTON,DC. ZOOL SOC SAN DIEGO,CTR REPROD ENDANGERED SPECIES,SAN DIEGO,CA 92112. UNIV MUNICH,INST ANTHROPOL & HUMAN GENET,W-8000 MUNICH,GERMANY. RP STANYON, R (reprint author), UNIV GENOA,INST PHYS ANTHROPOL,VIA BALBI 4,GENOA,ITALY. OI Stanyon, Roscoe/0000-0002-7229-1092 NR 36 TC 34 Z9 36 U1 0 U2 4 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0275-2565 J9 AM J PRIMATOL JI Am. J. Primatol. PY 1995 VL 35 IS 3 BP 171 EP 183 DI 10.1002/ajp.1350350302 PG 13 WC Zoology SC Zoology GA QJ092 UT WOS:A1995QJ09200001 ER PT J AU DAI, YS POST, JE APPLEMAN, DE AF DAI, YS POST, JE APPLEMAN, DE TI CRYSTAL-STRUCTURE OF MINEHILLITE - TWINNING AND STRUCTURAL RELATIONSHIPS TO REYERITE SO AMERICAN MINERALOGIST LA English DT Article ID NEUTRON-DIFFRACTION AB The crystal structure of minehillite from Franklin, New Jersey, (K,Na)(2)Ca28Zn5Al4Si40-O-112(OH)(16), was solved and refined in space group P ($) over bar 3c1, a = 9.777(2), c = 33.293(2) Angstrom, to R = 0.022 for 1510 unique reflections collected from a twinned crystal. Two twinned portions are related to each other by a twofold axis coincident with the ($) over bar 3 axis, which can result in apparent hexagonal symmetry for minehillite. The structure consists of a stacked sequence of three types of layer units: (1) an infinite sheet of edge-sharing Ca-(O,OH) polyhedra, (2) a single sheet of SiO4 tetrahedra connected in oval and pseudohexagonal-shaped six-membered rings, and (3) a complex slab built of SiO4 tetrahedra and Al0(6) octahedra into which alkali elements and Zn are accommodated. The first two units are identical to those found in the reyerite structure. The third is analogous to the double layer in reyerite but with significant differences. The SiO4 tetrahedra in the complex slab in minehillite form two sheets of isolated pseudohexagonal six-membered rings that are connected by AlO6 octahedra centered on the threefold axis, which are unusual features among layered silicate minerals. An average of five Zn atoms per cell partially occupy a highly distorted tetrahedral site. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT MINERAL SCI,WASHINGTON,DC 20560. NR 9 TC 4 Z9 4 U1 1 U2 1 PU MINERALOGICAL SOC AMER PI WASHINGTON PA 1130 17TH ST NW SUITE 330, WASHINGTON, DC 20036 SN 0003-004X J9 AM MINERAL JI Am. Miner. PD JAN-FEB PY 1995 VL 80 IS 1-2 BP 173 EP 178 PG 6 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA QJ446 UT WOS:A1995QJ44600017 ER PT J AU BULT, CJ SWEERE, JA ZIMMER, EA AF BULT, CJ SWEERE, JA ZIMMER, EA TI CRYPTIC SEQUENCE SIMPLICITY, NUCLEOTIDE COMPOSITION BIAS, AND MOLECULAR COEVOLUTION IN THE LARGE SUBUNIT OF RIBOSOMAL DNA IN PLANTS - IMPLICATIONS FOR PHYLOGENETIC ANALYSES SO ANNALS OF THE MISSOURI BOTANICAL GARDEN LA English DT Article ID SECONDARY STRUCTURE MODEL; RNA GENES; DROSOPHILA-MELANOGASTER; COMPENSATORY MUTATIONS; CLADISTIC-ANALYSIS; EVOLUTIONARY; 5.8S AB Sequences of the large subunit (LSU) of ribosomal DNA from Arabidopsis thaliana, Brassica napus, Sinapsis alba, Oryza sativa, Fragaria x ananassa, Lycopersicon esculentum, and Citrus limon were analyzed for nucleotide composition, presence of ''cryptic'' sequence simplicity, and evidence of molecular coevolution among the 12 expansion segments. The median value for GC content across the seven plants for the LSU was 56%, but the distribution of GC was nonrandom. Expansion segments were decidedly more GC rich (65% on average) than were the conserved core regions (52% on average). Only Oryza sati va had significant cryptic sequence simplicity, which was found to be greatest in expansion segments D8 and D12. Sequence similarity between expansion segments also was strongest in rice as determined by visual inspection of dot plots. The complex nature of sequence variation in the LSU of rDNA complicates the use of this molecule as a molecular systematic marker. C1 NATL MUSEUM NAT HIST,SMITHSONIAN INST,MOLEC SYSTEMAT LAB,WASHINGTON,DC 20560. RP BULT, CJ (reprint author), INST GENOMIC RES,MOLEC SYSTEMAT LAB,932 CLOPPER RD,GAITHERSBURG,MD 20878, USA. RI Zimmer, Elizabeth/G-3890-2011 NR 37 TC 13 Z9 13 U1 0 U2 1 PU MISSOURI BOTANICAL GARDEN PI ST LOUIS PA 2345 TOWER GROVE AVENUE, ST LOUIS, MO 63110 SN 0026-6493 J9 ANN MO BOT GARD JI Ann. Mo. Bot. Gard. PY 1995 VL 82 IS 2 BP 235 EP 246 DI 10.2307/2399879 PG 12 WC Plant Sciences SC Plant Sciences GA QY125 UT WOS:A1995QY12500006 ER PT J AU WATANABE, K KING, RM YAHARA, T ITO, M YOKOYAMA, J SUZUKI, T CRAWFORD, DJ AF WATANABE, K KING, RM YAHARA, T ITO, M YOKOYAMA, J SUZUKI, T CRAWFORD, DJ TI CHROMOSOMAL CYTOLOGY AND EVOLUTION IN EUPATORIEAE (ASTERACEAE) SO ANNALS OF THE MISSOURI BOTANICAL GARDEN LA English DT Article ID CHARACTER EVOLUTION; COMPOSITAE; PHYLOGENY AB Reports of 68 new chromosome counts attributed to 53 species from 25 genera of Eupatorieae of the Asteraceae, based mostly on determinations of mitotic materials, include first counts for 2 genera (Acanthostyles and Lepidesmia) and 14 species and new reports for 8 species. B chromosomes are reported for 4 genera and 12 species. Karyotype analyses made on 20 species of Eupatorieae and one species of Heliantheae showed that total karyotypic lengths of the taxa with n = 16-19 of helianthoid and eupatorioid taxa are comparable to those of some eupatorioid taxa with n = 10. This is contrary to the previous hypothesis that the higher chromosome numbers n = 16-19 were derived from n = 10 by polyploidization followed by dysploid loss. Cytological data supplement and are consistent with the following conclusions predicted from molecular phylogenetical and biochemical data: (1) The ultimate base number of Eupatorieae is 17, and the lower numbers are derived by successive dysploid reductions; (2) A reduction in chromosomal and total karyotypic length accompanied by evolutionary advancement has been revealed for some genera and species within this tribe; (3) A high base number of x = 17 in Eupatorieae is considered to be derived directly from one of the members of Heliantheae with n = 17 to 19. C1 SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT BOT,WASHINGTON,DC 20560. KYUSHU UNIV,FAC SCI,DEPT BIOL,FUKUOKA 812,JAPAN. CHIBA UNIV,FAC SCI,DEPT BIOL,INAGE KU,CHIBA 260,JAPAN. UNIV TOKYO,BOT GARDENS,TOKYO 112,JAPAN. MUSEUM NAT & HUMAN ACT,SANDA 66913,JAPAN. OHIO STATE UNIV,DEPT PLANT BIOL,COLUMBUS,OH 43210. RP WATANABE, K (reprint author), KOBE UNIV,FAC SCI,DEPT BIOL,TSURUKABUTO 1-2-1,KOBE 657,JAPAN. NR 30 TC 24 Z9 27 U1 1 U2 2 PU MISSOURI BOTANICAL GARDEN PI ST LOUIS PA 2345 TOWER GROVE AVENUE, ST LOUIS, MO 63110 SN 0026-6493 J9 ANN MO BOT GARD JI Ann. Mo. Bot. Gard. PY 1995 VL 82 IS 4 BP 581 EP 592 DI 10.2307/2399838 PG 12 WC Plant Sciences SC Plant Sciences GA TC369 UT WOS:A1995TC36900007 ER PT J AU SINGLETON, TA AF SINGLETON, TA TI ARCHAEOLOGY OF SLAVERY IN NORTH-AMERICA SO ANNUAL REVIEW OF ANTHROPOLOGY LA English DT Review DE ARCHAEOLOGY; SLAVERY; AFRICAN-AMERICANS; PLANTATIONS; FOODWAYS; CULTURAL IDENTITY ID MONTICELLO AB Archaeologists began to study slavery more than two decades ago, and since that time this interest has rapidly grown to become one of the most popular research specialties in the archaeology of the post-Columbian period. This essay reviews the interpretation of the archaeological record of slavery directed toward the analysis of four themes: living conditions under slavery, status differences within the plantation community, relationships of planter dominance and slave resistance, and formation of African-American cultural identity. It also discusses the sociopolitical context within which this study has operated and strongly recommends that greater efforts be taken to include African-American perspectives to inform this research. RP SINGLETON, TA (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ANTHROPOL,WASHINGTON,DC 20560, USA. NR 147 TC 54 Z9 54 U1 2 U2 6 PU ANNUAL REVIEWS INC PI PALO ALTO PA 4139 EL CAMINO WAY, PO BOX 10139, PALO ALTO, CA 94303-0139 SN 0084-6570 J9 ANNU REV ANTHROPOL JI Annu. Rev. Anthropol. PY 1995 VL 24 BP 119 EP 140 PG 22 WC Anthropology SC Anthropology GA TB636 UT WOS:A1995TB63600006 ER PT J AU ROUBIK, DW YANEGA, D ALUJA, M BUCHMANN, SL INOUYE, DW AF ROUBIK, DW YANEGA, D ALUJA, M BUCHMANN, SL INOUYE, DW TI ON OPTIMAL NECTAR FORAGING BY SOME TROPICAL BEES (HYMENOPTERA, APIDAE) SO APIDOLOGIE LA English DT Article DE NECTAR COMPOSITION; OPTIMAL FORAGING; POLLINATION ID APIS-MELLIFERA; BUMBLE BEES; FLOWERS; ECOLOGY; ENERGY AB Sugar concentration in nectar foraged by 13 Euglossini, 16 Meliponini and 8 Centridini (Apidae) was monitored in floristically rich habitats. For 6 Meliponini, sugar solution profitability by imbibement rate was compared to nectar choice (figs 1-4, tables I-IV). In addition, foraging assays tested meliponine response to 10 amino acid solutions (table V, fig 5). Optimal nectars were 35-65% sugar among bees, and apparently their modal forage. Bees also accepted suboptimal nectar, or were 'rate maximizers'. Two species had modes well below the means, indicating facultative selection of dilute nectars. For pollination, heterogeneity and optimal nectar sweetness are likely key mechanisms causing forager fidelity. Mean sugar contents were 38, 44 and 48 for Euglossini, Meliponini and Centridini, respectively; modes averaged 3-4% higher. All bees used nectars of 30-45% sugar; some also used nectars of 10-15 or 65-70% sugar; others did not use nectar of over 60% sugar. Amino acid solutions of 35-80 mM concentration did not generally affect attractiveness, but Melipona avoided glutamic acid, glycine, serine, alanine and proline, responding comparably to 20-40% sugar solutions contrasted with 50% concentration. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. ILLINOIS NAT HIST SURVEY,CHAMPAIGN,IL 61820. CARL HAYDEN BEE RES CTR,TUCSON,AZ 85719. UNIV MARYLAND,DEPT ZOOL,COLLEGE PK,MD 20742. RI Inouye, David/C-2997-2011 OI Inouye, David/0000-0003-2076-7834 NR 31 TC 50 Z9 58 U1 25 U2 64 PU EDITIONS SCIENTIFIQUES ELSEVIER PI PARIS CEDEX 15 PA 141 RUE JAVEL, 75747 PARIS CEDEX 15, FRANCE SN 0044-8435 J9 APIDOLOGIE JI Apidologie PY 1995 VL 26 IS 3 BP 197 EP 211 DI 10.1051/apido:19950303 PG 15 WC Entomology SC Entomology GA RM750 UT WOS:A1995RM75000003 ER PT B AU Schotte, M AF Schotte, M BE Thompson, MF Tirmizi, NM TI Gnathia arabica, ns first record of a gnathiid from the Arabian Sea, and new records of isopods (Crustacea: Isopoda) from Pakistan in collections of the Smithsonian Institution SO ARABIAN SEA: LIVING MARINE RESOURCES AND THE ENVIRONMENT LA English DT Proceedings Paper CT Pakistan/US Conference on the Arabian Sea - Living Marine Resources and the Environment CY JUN, 1993 CL KARACHI, PAKISTAN SP Karachi Univ, AIBS, ONR, Marine Ref Collect & Resource Ctr C1 SMITHSONIAN INST,DEPT INVERTEBRATE ZOOL,NATL MUSEUM NATL HIST,WASHINGTON,DC 20560. NR 0 TC 3 Z9 4 U1 0 U2 0 PU A A BALKEMA PI ROTTERDAM PA PO BOX 1675, 3000 BR ROTTERDAM, NETHERLANDS BN 90-5410-256-X PY 1995 BP 111 EP 118 PG 8 WC Fisheries; Marine & Freshwater Biology; Oceanography SC Fisheries; Marine & Freshwater Biology; Oceanography GA BE48G UT WOS:A1995BE48G00010 ER PT S AU Johnston, KJ Seidelmann, PK Reasenberg, RD Babcock, R Phillips, JD AF Johnston, KJ Seidelmann, PK Reasenberg, RD Babcock, R Phillips, JD BE Hog, E Seidelmann, PK TI Newcomb astrometric satellite SO ASTRONOMICAL AND ASTROPHYSICAL OBJECTIVES OF SUB-MILLIARCSECOND OPTICAL ASTROMETRY SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 166th Symposium of the International-Astronomical-Union on Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry CY AUG 15-19, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union AB Newcomb is a design concept for an astrometric optical interferometer satellite with a nominal single measurement accuracy of 100 microarcseconds. In a 30-month mission life, it will make scientifically interesting measurements of O stars, RR Lyrae and Cepheid distances, probe dark matter in our Galaxy via parallax measurements of K giants in the disk, establish a reference grid with internal consistency better than 50 microarcseconds, and lay the groundwork for the larger optical interferometers that are expected to produce a profusion of scientific results during the next century. C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RP Johnston, KJ (reprint author), USN OBSERV,WASHINGTON,DC 20392, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3442-6 J9 IAU SYMP PY 1995 IS 166 BP 331 EP 334 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE11F UT WOS:A1995BE11F00049 ER PT B AU Eichhorn, G Murray, SS Kurtz, MJ Accomazzi, A Grant, CS AF Eichhorn, G Murray, SS Kurtz, MJ Accomazzi, A Grant, CS BE Shaw, RA Payne, HE Hayes, JJE TI The new astrophysics data system SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RI Eichhorn, Guenther/C-9480-2009; KURTZ, Michael /B-3890-2009 OI Eichhorn, Guenther/0000-0002-3032-1978; NR 0 TC 7 Z9 7 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 28 EP 31 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00005 ER PT B AU Grant, CS Accomazzi, A Eichhorn, G Kurtz, MJ Murray, SS AF Grant, CS Accomazzi, A Eichhorn, G Kurtz, MJ Murray, SS BE Shaw, RA Payne, HE Hayes, JJE TI Development of an ADS data dictionary standard SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RI Eichhorn, Guenther/C-9480-2009; KURTZ, Michael /B-3890-2009 OI Eichhorn, Guenther/0000-0002-3032-1978; NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 32 EP 35 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00006 ER PT B AU Accomazzi, A Grant, CS Eichhorn, G Kurtz, MJ Murray, SS AF Accomazzi, A Grant, CS Eichhorn, G Kurtz, MJ Murray, SS BE Shaw, RA Payne, HE Hayes, JJE TI ADS Abstract Service enhancements SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. RI Eichhorn, Guenther/C-9480-2009; KURTZ, Michael /B-3890-2009 OI Eichhorn, Guenther/0000-0002-3032-1978; NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 36 EP 39 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00007 ER PT B AU Mandel, E Tody, D AF Mandel, E Tody, D BE Shaw, RA Payne, HE Hayes, JJE TI Applying public access programming techniques to SAOimage SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 125 EP 128 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00027 ER PT B AU Kleiner, SC AF Kleiner, SC BE Shaw, RA Payne, HE Hayes, JJE TI A graphical planning and scheduling toolkit for astronomical spacecraft SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 136 EP 139 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00030 ER PT B AU McDowell, J Elvis, M AF McDowell, J Elvis, M BE Shaw, RA Payne, HE Hayes, JJE TI Propagating uncertainties and units in data structures SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,AXAF SCI CTR,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 195 EP 198 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00045 ER PT B AU Kearns, K Primini, F Alexander, D AF Kearns, K Primini, F Alexander, D BE Shaw, RA Payne, HE Hayes, JJE TI Bias-free parameter estimation with few counts, by iterative chi-squared minimization SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 10 Z9 10 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 331 EP 334 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00077 ER PT B AU Manning, KR DePonte, J Primini, F AF Manning, KR DePonte, J Primini, F BE Shaw, RA Payne, HE Hayes, JJE TI QPSIM: An IRAF/PROS tool for source simulation SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 353 EP 356 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00082 ER PT B AU Jerius, D Freeman, M Gaetz, T Hughes, JP Podgorski, W AF Jerius, D Freeman, M Gaetz, T Hughes, JP Podgorski, W BE Shaw, RA Payne, HE Hayes, JJE TI The SAO AXAF simulation system SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 6 Z9 6 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 357 EP 360 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00083 ER PT B AU Nguyen, D Hillberg, B AF Nguyen, D Hillberg, B BE Shaw, RA Payne, HE Hayes, JJE TI Simulations of pinhole imaging for AXAF: Distributed processing using the MPI standard SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 361 EP 363 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00084 ER PT B AU Chen, JC Conroy, MA DePonte, J Primini, FA AF Chen, JC Conroy, MA DePonte, J Primini, FA BE Shaw, RA Payne, HE Hayes, JJE TI A new PROS task for calculating HRI source intensities or upper limits SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 406 EP 409 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00095 ER PT B AU DePonte, J Chen, J Manning, KR Schmidt, D VanStone, D AF DePonte, J Chen, J Manning, KR Schmidt, D VanStone, D BE Shaw, RA Payne, HE Hayes, JJE TI The PROS big picture: A high-level representation of a software system SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 410 EP 413 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00096 ER PT B AU Schmidt, D AF Schmidt, D BE Shaw, RA Payne, HE Hayes, JJE TI An IRAF-independent interface for spatial-region descriptors SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 414 EP 417 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00097 ER PT B AU Mink, DJ Wyatt, WF AF Mink, DJ Wyatt, WF BE Shaw, RA Payne, HE Hayes, JJE TI EMSAO: Radial velocities from emission lines in spectra SO ASTRONOMICAL DATA ANALYSIS SOFTWARE AND SYSTEMS IV SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Annual Conference on Astronomical Data Analysis Software and Systems (ADASS IV) CY SEP 25-28, 1994 CL BALTIMORE, MD SP Space Telescope Sci Inst, Natl Opt Astron Observ, Smithsonian Astrophys Observ, Natl Radio Astron Observ, NASA, Natl Res Council Canada, Natl Sci Fdn, Hughes STX, Sun Microsyst Inc, Resource One, Sybase Inc, Silicon Graph Inc, Open Concepts Inc, Res Syst Inc, Digital Equipment Corp C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 21 Z9 21 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-96-1 J9 ASTR SOC P PY 1995 VL 77 BP 496 EP 499 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Y UT WOS:A1995BE33Y00116 ER PT J AU WILLMER, CNA DACOSTA, LN PELLEGRINI, PS FAIRALL, AP LATHAM, DW FREUDLING, W AF WILLMER, CNA DACOSTA, LN PELLEGRINI, PS FAIRALL, AP LATHAM, DW FREUDLING, W TI THE HYDRA-CENTAURUS REGION AND THE NEARBY UNIVERSE SO ASTRONOMICAL JOURNAL LA English DT Article ID REDSHIFT SURVEY; DENSITY FIELD; GALAXY DISTRIBUTION; GREAT ATTRACTOR; CATALOG; CLUSTERS; VELOCITY; VOIDS C1 OBSERV NACL,CNPQ,DEPT ASTRON,BR-20921 RIO JANEIRO,BRAZIL. OBSERV NACL,CNPQ,DEPT ASTRON,BR-20921 RIO JANEIRO,BRAZIL. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. SPACE TELESCOPE EUROPEAN COORDINATING FACIL,D-84748 GARCHING,GERMANY. EUROPEAN SO OBSERV,D-84748 GARCHING,GERMANY. UNIV CAPE TOWN,DEPT ASTRON,RONDEBOSCH 7700,SOUTH AFRICA. RP WILLMER, CNA (reprint author), OBSERV NACL,CNPQ,DEPT ASTRON,RUA GEN JOSE CRISTINO 77,BR-20921 RIO JANEIRO,BRAZIL. NR 55 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD JAN PY 1995 VL 109 IS 1 BP 61 EP 72 DI 10.1086/117256 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PZ937 UT WOS:A1995PZ93700006 ER PT J AU SARAJEDINI, A MILONE, AAE AF SARAJEDINI, A MILONE, AAE TI BVI CCD PHOTOMETRY OF NGC-5053 - THE MOST METAL-POOR GALACTIC GLOBULAR-CLUSTER SO ASTRONOMICAL JOURNAL LA English DT Article ID BLUE STRAGGLER STARS; RR LYRAE STARS; SYSTEM; METALLICITIES; ABUNDANCE; MAGNITUDE; RANGE C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP SARAJEDINI, A (reprint author), NATL OPT ASTRON OBSERV,KITT PEAK NATL OBSERV,POB 26732,TUCSON,AZ 85726, USA. NR 33 TC 28 Z9 28 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD JAN PY 1995 VL 109 IS 1 BP 269 EP 271 DI 10.1086/117271 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PZ937 UT WOS:A1995PZ93700021 ER PT J AU STAUFFER, JR LIEBERT, J GIAMPAPA, M AF STAUFFER, JR LIEBERT, J GIAMPAPA, M TI RADIAL-VELOCITIES OF VERY-LOW MASS STARS AND CANDIDATE BROWN DWARF MEMBERS OF THE HYADES AND PLEIADES .2. SO ASTRONOMICAL JOURNAL LA English DT Article ID MAIN-SEQUENCE; CHROMOSPHERIC ACTIVITY; LOCAL SUPERCLUSTERS; BLUE STRAGGLERS; BINARY STARS; PHOTOMETRY; MODELS; POPULATIONS; STARBURSTS; EMISSION C1 UNIV ARIZONA,TUCSON,AZ 85721. NATL SOLAR OBSERV,TUCSON,AZ 85726. RP STAUFFER, JR (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 62 TC 31 Z9 31 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD JAN PY 1995 VL 109 IS 1 BP 298 EP 311 DI 10.1086/117273 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PZ937 UT WOS:A1995PZ93700023 ER PT J AU DYCK, HM BENSON, JA CARLETON, NP COLDWELL, C LACASSE, MG NISENSON, P PANASYUK, A PAPALIOLIOS, C PEARLMAN, MR REASENBERG, RD TRAUB, WA XU, X PREDMORE, CR SCHLOERB, FP GIBSON, DM AF DYCK, HM BENSON, JA CARLETON, NP COLDWELL, C LACASSE, MG NISENSON, P PANASYUK, A PAPALIOLIOS, C PEARLMAN, MR REASENBERG, RD TRAUB, WA XU, X PREDMORE, CR SCHLOERB, FP GIBSON, DM TI 1ST 2.2-MU-M RESULTS FROM THE IOTA INTERFEROMETER SO ASTRONOMICAL JOURNAL LA English DT Article ID ANGULAR DIAMETER MEASUREMENTS; LATE-TYPE STARS; EFFECTIVE TEMPERATURES; ALPHA-ORIONIS; GIANTS; COOLER; SHELLS; MODEL; K0 C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV MASSACHUSETTS,DEPT PHYS & ASTRON,AMHERST,MA 01003. MIT,LINCOLN LAB,SOCORRO,NM 87801. RP DYCK, HM (reprint author), UNIV WYOMING,DEPT PHYS & ASTRON,LARAMIE,WY 82071, USA. NR 30 TC 16 Z9 16 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD JAN PY 1995 VL 109 IS 1 BP 378 EP 382 DI 10.1086/117282 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PZ937 UT WOS:A1995PZ93700032 ER PT J AU GUIRADO, JC MARCAIDE, JM ELOSEGUI, P RATNER, MI SHAPIRO, II ECKART, A QUIRRENBACH, A SCHALINSKI, CJ WITZEL, A AF GUIRADO, JC MARCAIDE, JM ELOSEGUI, P RATNER, MI SHAPIRO, II ECKART, A QUIRRENBACH, A SCHALINSKI, CJ WITZEL, A TI VLBI DIFFERENTIAL ASTROMETRY OF THE RADIO SOURCE-1928+738 AND SOURCE-2007+777 AT 5-GHZ SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ASTROMETRY; TECHNIQUES, INTERFEROMETRIC; QUASARS, INDIVIDUAL, 1928+738; BL LACERTAE OBJECTS, INDIVIDUAL, 2007+777 ID INTERFEROMETRY; MOTION; GEODESY; SYSTEM; CORE AB From 5 GHz VLBI observations of the quasar 1928+738 and the BL Lac object 2007+777 on 9 October 1985, we have determined their relative position in J2000.0 to be: Delta alpha = 37(m) 42(s).50343 +/-0(S).00009 Delta delta = 3 degrees 54' 41''.6778 +/- 0''.0002 The uncertainties quoted are each approximately one statistical standard deviation and correspond to about 0.3 milliarcseconds in right ascension and 0.2 milliarcseconds in declination. This result demonstrates the feasibility of using single-band observations for accurate phase-delay differential astrometry of sources separated by 5 degrees on the sky. The plasma contribution to the phase delay, the potentially limiting source of error in single-band observations, has been estimated from ionospheric total electron content measurements obtained by satellite ground stations and from differences of phase-delay and group-delay observables. C1 UNIV VALENCIA, DPTO MATEMAT APLICADA & ASTRON, E-46100 BURJASSOT, SPAIN. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. MAX PLANCK INST PHYS & ASTROPHYS, W-8046 GARCHING, GERMANY. MAX PLANCK INST RADIOASTRON, D-53010 BONN, GERMANY. INST RADIO ASTRON MILLIMETR, F-38406 ST MARTIN DHERES, FRANCE. RP GUIRADO, JC (reprint author), CSIC, INST ASTROFIS ANDALUCIA, APARTADO 3004, E-18080 GRANADA, SPAIN. NR 44 TC 17 Z9 17 U1 0 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 1995 VL 293 IS 2 BP 613 EP 625 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QB723 UT WOS:A1995QB72300038 ER PT J AU HAINAUT, O WEST, RM MARSDEN, BG SMETTE, A MEECH, K AF HAINAUT, O WEST, RM MARSDEN, BG SMETTE, A MEECH, K TI POSTPERIHELION OBSERVATIONS OF COMET P/HALLEY .4. R=16.6 AND 18.8 AU SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE COMETS, P/HALLEY 1986 III ID POSTPERIHELION OBSERVATIONS; OUTBURST; HALLEY AB Deep CCD observations have been performed with the 3.58m New Technology Telescope at La Silla in the direction of comet P/Halley on April 6, 1992, at heliocentric distance r = 16.6 AU and on January 11, 1994, at r = 18.8 AU. In 1992, the comet could not be convincingly recorded; the limiting magnitude was V similar to 25.8. In 1994, the image of the comet was clearly detected (at S/N = 7) as a V = 26.5 point-source, 0''.9 from the predicted position. The identification is further strengthened by the observed motion, which is incompatible with that of more nearby minor bodies and perfectly matches that predicted for this comet. The observed brightness corresponds to that of the naked nucleus and no coma is detected at the 32 mag per square arcsecond level, indicating a complete lack of activity. The feasibility of continued monitoring of P/Halley during the next years is discussed. C1 UNIV LIEGE, INST ASTROPHYS, B-4000 LIEGE, BELGIUM. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. UNIV HAWAII, INST ASTRON, HONOLULU, HI 96822 USA. RP HAINAUT, O (reprint author), EUROPEAN SO OBSERV, KARL SCHWARZSCHILD STR 2, D-85748 GARCHING, GERMANY. NR 19 TC 6 Z9 6 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 1995 VL 293 IS 3 BP 941 EP 947 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QD234 UT WOS:A1995QD23400032 ER PT B AU Kurucz, RL AF Kurucz, RL BE Adelman, SJ Wiese, WL TI The Kurucz Smithsonian atomic and molecular database SO ASTROPHYSICAL APPLICATIONS OF POWERFUL NEW DATABASES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Joint Discussion Number 16 of the 22nd General Assembly of the IAU - Astrophysical Applications of Powerful New Databases CY AUG 22-23, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 76 Z9 76 U1 0 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-97-X J9 ASTR SOC P PY 1995 VL 78 BP 205 EP 210 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33Z UT WOS:A1995BE33Z00024 ER PT B AU Sasselov, DD AF Sasselov, DD BE Stobie, RS Whitelock, PA TI The centre-of-mass velocity of a radially pulsating star: Insights from NLTE models SO ASTROPHYSICAL APPLICATIONS OF STELLAR PULSATION SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 155 on the Astrophysical Applications of Stellar Pulsation CY FEB 06-10, 1995 CL CAPE TOWN, SOUTH AFRICA SP Dept Arts Culture Sci & Technol, Republic S Africa, Int Astron Union, Int Sci Fdn, S African Life & Mutual, S African Astron Observ, Captour, Fair Lady, Kirstenboscch Natl Bot Gardens, Prof John Percy C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-03-1 J9 ASTR SOC P PY 1995 VL 83 BP 375 EP 376 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF08S UT WOS:A1995BF08S00087 ER PT J AU BALIUNAS, SL DONAHUE, RA SOON, WH HORNE, JH FRAZER, J WOODARDEKLUND, L BRADFORD, M RAO, LM WILSON, OC ZHANG, Q BENNETT, W BRIGGS, J CARROLL, SM DUNCAN, DK FIGUEROA, D LANNING, HH MISCH, A MUELLER, J NOYES, RW POPPE, D PORTER, AC ROBINSON, CR RUSSELL, J SHELTON, JC SOYUMER, T VAUGHAN, AH WHITNEY, JH AF BALIUNAS, SL DONAHUE, RA SOON, WH HORNE, JH FRAZER, J WOODARDEKLUND, L BRADFORD, M RAO, LM WILSON, OC ZHANG, Q BENNETT, W BRIGGS, J CARROLL, SM DUNCAN, DK FIGUEROA, D LANNING, HH MISCH, A MUELLER, J NOYES, RW POPPE, D PORTER, AC ROBINSON, CR RUSSELL, J SHELTON, JC SOYUMER, T VAUGHAN, AH WHITNEY, JH TI CHROMOSPHERIC VARIATIONS IN MAIN-SEQUENCE STARS .2. SO ASTROPHYSICAL JOURNAL LA English DT Review DE STARS ACTIVITY; STARS CHROMOSPHERES; STARS LATE-TYPE; STARS ROTATION ID CA-II H; EMISSION-LINE FLUXES; SOLAR-TYPE STARS; K-EMISSION; COOL STARS; MAGNETIC-STRUCTURE; STELLAR ROTATION; TIME VARIATIONS; BINARY STARS; CYCLE AB The fluxes in passbands 0.1 nm wide and centered on the Ca II H and K emission cores have been monitored in 111 stars of spectral type F2-M2 on or near the main sequence in a continuation of an observing program started by O. C. Wilson. Most of the measurements began in 1966, with observations scheduled monthly until 1980, when observations were scheduled several times per week. The records, with a long-term precision of about 1.5%, display fluctuations that can be identified with variations on timescales similar to the 11 yr cycle of solar activity as well as axial rotation, and the growth and decay of emitting regions. We present the records of chromospheric emission and general conclusions about variations in surface magnetic activity on timescales greater than 1 yr but less than a few decades. The results for stars of spectral type G0-K5 V indicate a pattern of change in rotation and chromospheric activity on an evolutionary timescale, in which (1) young stars exhibit high average levels of activity, rapid rotation rates, no Maunder minimum phase and rarely display a smooth, cyclic variation; (2) stars of intermediate age (approximately 1-2 Gyr for 1 M.) have moderate levels of activity and rotation rates, and occasional smooth cycles; and (3) stars as old as the Sun and older have slower rotation rates, lower activity levels, and smooth cycles with occasional Maunder minimum-phases. C1 TENNESSEE STATE UNIV, CTR EXCELLENCE INFORMAT SYST, NASHVILLE, TN 37203 USA. HOOVER INST WAR REVOLUT & PEACE, STANFORD, CA 94305 USA. YALE UNIV, DEPT PHYS, NEW HAVEN, CT 06520 USA. MT WILSON OBSERV, MT WILSON, CA 91023 USA. UNIV CALIF LOS ANGELES, DEPT ASTRON, LOS ANGELES, CA 90024 USA. UNIV WISCONSIN, DEPT ASTRON, MADISON, WI 53706 USA. YERKES OBSERV, WILLIAMS BAY, WI 53191 USA. MIT, CTR THEORET PHYS, NUCL SCI LAB, CAMBRIDGE, MA 02139 USA. MIT, DEPT PHYS, CAMBRIDGE, MA 02139 USA. UNIV CHICAGO, DEPT ASTRON & ASTROPHYS, CHICAGO, IL 60637 USA. ADLER PLANETARIUM, CHICAGO, IL 60637 USA. COMP SCI CORP, SPACE TELESCOPE SCI INST, BALTIMORE, MD 21218 USA. LICK OBSERV, SANTA CRUZ, CA 95064 USA. PALOMAR OBSERV, PALOMAR MT, CA 92060 USA. NATL OPT ASTRON OBSERV, TUCSON, AZ 85726 USA. PENN STATE UNIV, DEPT ASTRON & ASTROPHYS, UNIVERSITY PK, PA 16802 USA. JET PROP LAB, OFF SPACE SCI & INSTRUMENTAT, PASADENA, CA 91109 USA. UNIV VIRGINIA, DEPT ASTRON, UNIV STN, CHARLOTTESVILLE, VA 22903 USA. RP BALIUNAS, SL (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 104 TC 602 Z9 604 U1 1 U2 5 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 1 PY 1995 VL 438 IS 1 BP 269 EP 287 DI 10.1086/175072 PN 1 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA055 UT WOS:A1995QA05500024 ER PT J AU RIESS, AG PRESS, WH KIRSHNER, RP AF RIESS, AG PRESS, WH KIRSHNER, RP TI USING TYPE IA SUPERNOVA LIGHT-CURVE SHAPES TO MEASURE THE HUBBLE CONSTANT SO ASTROPHYSICAL JOURNAL LA English DT Article DE DISTANCE SCALE; SUPERNOVAE, GENERAL ID GALAXIES; SPECTRA AB We present an empirical method that uses visual band light curve shapes (LCSs) to estimate the luminosity of Type Ia supernova (SN Ia's). This method is first applied to a ''training set'' of eight SN Ia light curves with independent distance estimates to derive the correlation between the LCS and the luminosity. We employ a linear estimation algorithm of the type developed by Rybicki and Press, The result is similar to that obtained by Hamuy et al. with the advantage that LCS produces quantitative error estimates for the distance. We then examine the light curves for 13 SN Ia's to determine the LCS distances of these supernovae. The Hubble diagram constructed using these LCS distances has a remarkably small dispersion of sigma(v) = 0.21 mag. We use the light curve of SN 1972E and the Cepheid distance to NGC 5253 to derive 67 +/- 7 km s(-1) Mpc(-1) for the Hubble constant. RP RIESS, AG (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 35 TC 265 Z9 265 U1 0 U2 3 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 1 PY 1995 VL 438 IS 1 BP L17 EP L20 DI 10.1086/187704 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA057 UT WOS:A1995QA05700005 ER PT J AU MCLEOD, BA BERNSTEIN, GM RIEKE, MJ TOLLESTRUP, EV FAZIO, GG AF MCLEOD, BA BERNSTEIN, GM RIEKE, MJ TOLLESTRUP, EV FAZIO, GG TI K-BAND GALAXY COUNTS SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE GALAXIES, GENERAL; INFRARED, GALAXIES ID EVOLUTION; SKY AB We present new counts of field galaxies from more than 20 arcmin(2) to a limiting magnitude of K = 20 and from 2 arcmin(2) to K = 21.5. At the faintest magnitudes, the counts are slightly higher than those reported previously, though still consistent given the small numbers of galaxies in the two samples. C1 UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721. RP MCLEOD, BA (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 17 TC 84 Z9 84 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD JAN PY 1995 VL 96 IS 1 BP 117 EP 121 DI 10.1086/192114 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PZ339 UT WOS:A1995PZ33900004 ER PT J AU Perivolaropoulos, L Moessner, R Brandenberger, R AF Perivolaropoulos, L Moessner, R Brandenberger, R TI Signatures of cosmic strings on the microwave background SO ASTROPHYSICAL LETTERS & COMMUNICATIONS LA English DT Article ID PECULIAR VELOCITIES; FLUCTUATIONS; EVOLUTION; PERTURBATIONS; ANISOTROPIES; STATISTICS; TOPOLOGY; WAKES AB We review recent progress on testing the hypothesis of the existence of cosmic string perturbations in microwave background maps. Using an analytical model for the string network we show that the predicted amplitude and spectrum of MBR fluctuations are consistent with the COBE data for a reasonable value of the single free parameter of the string model (the mass per unit length of the string mu). To distinguish the predictions of cosmic strings from those of Gaussian models it is necessary to apply specific statistical tests which are sensitive to non-random phases of the MBR temperature maps. We discuss two such statistical tests: First, the probability distribution and the moments of fluctuations delta T/T and second the corresponding statistical quantities for the gradient of fluctuations along a fixed direction. We show that the second statistic can detect cosmic string specific signatures on MBR temperature maps with resolution of a few arcminutes or smaller. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,DIV THEORET ASTROPHYS,CAMBRIDGE,MA 02138. BROWN UNIV,DEPT PHYS,PROVIDENCE,RI 02912. NR 28 TC 0 Z9 0 U1 0 U2 0 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0888-6512 J9 ASTROPHYS LETT COMM JI Astrophys. Lett. Comm. PY 1995 VL 32 IS 1-6 BP 81 EP 88 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA VU782 UT WOS:A1995VU78200013 ER PT J AU KENYON, S AF KENYON, S TI DISKS IN PRE-MAIN-SEQUENCE STARS SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Article; Proceedings Paper CT 2nd International Conference on Planetary Systems: Formation, Evolution and Detection CY DEC 13-15, 1993 CL WAIKOLA, HI SP NASA ID YOUNG STELLAR OBJECTS; T-TAURI STARS; SPECTRAL ENERGY-DISTRIBUTIONS; MODEL SCATTERING ENVELOPES; AURIGA MOLECULAR CLOUD; CIRCUMSTELLAR DISKS; FU ORIONIS; FORBIDDEN-LINE; GG-TAURI; GAS RP KENYON, S (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Kenyon, Scott/0000-0003-0214-609X NR 32 TC 4 Z9 4 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD JAN PY 1995 VL 223 IS 1-2 BP 3 EP 13 DI 10.1007/BF00989148 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ536 UT WOS:A1995QQ53600002 ER PT J AU SARGENT, A LATHAM, D KENYON, S STAHLER, S REYESRUIZ, M LADA, C AF SARGENT, A LATHAM, D KENYON, S STAHLER, S REYESRUIZ, M LADA, C TI DISKS IN PRE-MAIN-SEQUENCE STARS - DISCUSSION SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Discussion C1 CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV CALIF BERKELEY,BERKELEY,CA 94720. RICE UNIV,HOUSTON,TX 77251. LUNAR & PLANETARY INST,HOUSTON,TX 77058. SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA. RP SARGENT, A (reprint author), CALTECH,PASADENA,CA 91125, USA. NR 0 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 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD JAN PY 1995 VL 223 IS 1-2 BP 15 EP 17 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ536 UT WOS:A1995QQ53600003 ER PT J AU LATHAM, D RUDEN, SP MATHIEU, R COCHRAN, B WALTER, F SARGENT, A ROSENBERG, M REYESRUIZ, M AF LATHAM, D RUDEN, SP MATHIEU, R COCHRAN, B WALTER, F SARGENT, A ROSENBERG, M REYESRUIZ, M TI THEORY OF PROTOPLANETARY DISKS - DISCUSSION SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Discussion C1 UNIV WISCONSIN,MADISON,WI 53706. UNIV TEXAS,AUSTIN,TX 78712. SUNY STONY BROOK,STONY BROOK,NY 11794. CALTECH,PASADENA,CA 91125. UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92103. RICE UNIV,HOUSTON,TX 77251. LUNAR & PLANETARY INST,HOUSTON,TX 77058. RP LATHAM, D (reprint author), SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138, USA. NR 0 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 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD JAN PY 1995 VL 223 IS 1-2 BP 69 EP 72 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ536 UT WOS:A1995QQ53600009 ER PT J AU KENYON, S GATEWOOD, GD IANNA, P STRAND, K BROWN, R ANGEL, R AF KENYON, S GATEWOOD, GD IANNA, P STRAND, K BROWN, R ANGEL, R TI A STUDY OF THE ASTROMETRIC MOTION OF BARNARDS STAR - DISCUSSION SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Discussion C1 UNIV VIRGINIA,CHARLOTTESVILLE,VA 22903. USN OBSERV,WASHINGTON,DC 20392. SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. UNIV ARIZONA,TUCSON,AZ 85721. RP KENYON, S (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138, USA. NR 0 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 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD JAN PY 1995 VL 223 IS 1-2 BP 99 EP 101 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ536 UT WOS:A1995QQ53600013 ER PT J AU ZINNECKER, H MATHIEU, R HAYASHI, M WELCH, J LATHAM, D BROWN, R BURKE, B LEVY, E BLACK, D AF ZINNECKER, H MATHIEU, R HAYASHI, M WELCH, J LATHAM, D BROWN, R BURKE, B LEVY, E BLACK, D TI PLANETARY SYSTEMS - FORMATION, EVOLUTION AND DETECTION - PROCEEDINGS OF THE 2ND INTERNATIONAL-CONFERENCE HELD AT WAIKOLOA, HAWAII, 13-15 DECEMBER, 1993 - PANEL DISCUSSION SO ASTROPHYSICS AND SPACE SCIENCE LA English DT Discussion C1 UNIV WISCONSIN,MADISON,WI 53706. UNIV TOKYO,TOKYO,JAPAN. UNIV CALIF BERKELEY,BERKELEY,CA 94720. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. MIT,CAMBRIDGE,MA 02139. UNIV ARIZONA,TUCSON,AZ 85721. LUNAR & PLANETARY INST,HOUSTON,TX 77058. RP ZINNECKER, H (reprint author), UNIV WURZBURG,WURZBURG,GERMANY. NR 0 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 0004-640X J9 ASTROPHYS SPACE SCI JI Astrophys. Space Sci. PD JAN PY 1995 VL 223 IS 1-2 BP 125 EP 132 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QQ536 UT WOS:A1995QQ53600019 ER PT B AU CHANCE, K WIJNBERGEN, JJ DEVALK, P SCHNEIDER, W BURROWS, JP AF CHANCE, K WIJNBERGEN, JJ DEVALK, P SCHNEIDER, W BURROWS, JP BE Santer, RP TI THE OHIO CONCEPT - REFINEMENTS ON A DESIGN FOR SATELLITE-BASED MEASUREMENTS OF STRATOSPHERIC OH SO ATMOSPHERIC SENSING AND MODELING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Atmospheric Sensing and Modeling CY SEP 29-30, 1994 CL ROME, ITALY SP COMMISS EUROPEAN COMMUNITIES, DIRECTORATE GEN SCI RES & DEV, EUROPEAN OPT SOC, SOC PHOTO OPT INSTRUMENTAT ENGINEERS, CNR, ITALIAN ASSOC REMOTE SENSING C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1641-X J9 P SOC PHOTO-OPT INS PY 1995 VL 2311 BP 236 EP 239 PG 4 WC Meteorology & Atmospheric Sciences; Remote Sensing SC Meteorology & Atmospheric Sciences; Remote Sensing GA BC28Y UT WOS:A1995BC28Y00025 ER PT S AU Dalgarno, A AF Dalgarno, A BE Schultz, DR Strayer, MR Macek, JH TI Atomic physics in astrophysics SO ATOMIC COLLISIONS: A SYMPOSIUM IN HONOR OF CHRISTOPHER BOTTCHER (1945-1993) SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Atomic Collisions - A Symposium in Honor of Christopher Bottcher (1945-1993) CY MAR 03-05, 1994 CL OAK RIDGE, TN C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 2 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-322-1 J9 AIP CONF PROC PY 1995 VL 347 BP 1 EP 7 PG 7 WC Physics, Atomic, Molecular & Chemical SC Physics GA BE32K UT WOS:A1995BE32K00001 ER PT S AU Kirby, KP AF Kirby, KP BE Schultz, DR Strayer, MR Macek, JH TI Resonant dissociative photoionization of H2 - Revisited SO ATOMIC COLLISIONS: A SYMPOSIUM IN HONOR OF CHRISTOPHER BOTTCHER (1945-1993) SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Atomic Collisions - A Symposium in Honor of Christopher Bottcher (1945-1993) CY MAR 03-05, 1994 CL OAK RIDGE, TN C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-322-1 J9 AIP CONF PROC PY 1995 VL 347 BP 43 EP 52 PG 10 WC Physics, Atomic, Molecular & Chemical SC Physics GA BE32K UT WOS:A1995BE32K00005 ER PT S AU KIRBY, KP AF KIRBY, KP BE Wineland, DJ Wieman, CE Smith, SJ TI COLLISION PROCESSES IN ASTROPHYSICAL ENVIRONMENTS SO ATOMIC PHYSICS 14 SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 14th International Conference on Atomic Physics (ICAP-14) CY JUL 31-AUG 05, 1994 CL UNIV COLORADO, BOULDER, CO SP INT UNION PURE & APPL PHYS, INT SCI FDN, UNIV COLORADO, NATL INST STANDARDS & TECHNOL, NATL SCI FDN, USA, ARMY RES OFF, USN, OFF NAVAL RES HO UNIV COLORADO C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-348-5 J9 AIP CONF PROC PY 1995 IS 323 BP 437 EP 449 PG 13 WC Optics; Physics, Atomic, Molecular & Chemical; Spectroscopy SC Optics; Physics; Spectroscopy GA BC78N UT WOS:A1995BC78N00026 ER PT J AU HORMIGA, G EBERHARD, WG CODDINGTON, JA AF HORMIGA, G EBERHARD, WG CODDINGTON, JA TI WEB-CONSTRUCTION BEHAVIOR IN AUSTRALIAN PHONOGNATHA AND THE PHYLOGENY OF NEPHILINE AND TETRAGNATHID SPIDERS (ARANEAE, TETRAGNATHIDAE) SO AUSTRALIAN JOURNAL OF ZOOLOGY LA English DT Article ID ORB-WEAVING SPIDER; CLAVIPES ARANEAE; ARANEIDAE; MORPHOLOGY; PREY; SIZE AB Details of web-construction behaviour and morphology support the monophyly of nephiline spiders with Phonognatha as the sister-group to the remaining nephiline genera examined in this study. Phylogenetic analysis of the behavioural data suggests that specialisations in nephiline building behaviour and web architecture did not evolve concurrently, and that some preceded the female giantism (not male dwarfism) for which nephiline spiders are well-known. Cladistic analysis of 60 characters supports the monophyly of both Tetragnathidae and Tetragnathinae. New data from spinneret silk gland spigots, combined with other morphological and behavioural characters, provide the first concrete evidence that 'metine' genera, occasionally regarded as either a distinct family or subfamily, are a paraphyletic assemblage. C1 UNIV MARYLAND,MARYLAND CTR SYSTEMAT ENTOMOL,DEPT ENTOMOL,COLLEGE PK,MD 20742. UNIV COSTA RICA,SMITHSONIAN TROP RES INST,SAN JOSE,COSTA RICA. UNIV COSTA RICA,ESCUELA BIOL,SAN JOSE,COSTA RICA. RP HORMIGA, G (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ENTOMOL,NHB-105,WASHINGTON,DC 20560, USA. RI Hormiga, Gustavo/C-3874-2009 NR 82 TC 92 Z9 95 U1 0 U2 7 PU C S I R O PUBLICATIONS PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD VICTORIA 3066, AUSTRALIA SN 0004-959X J9 AUST J ZOOL JI Aust. J. Zool. PY 1995 VL 43 IS 4 BP 313 EP 364 DI 10.1071/ZO9950313 PG 52 WC Zoology SC Zoology GA RW901 UT WOS:A1995RW90100001 ER PT B AU Weitzman, AL AF Weitzman, AL BE Churchill, SP Balslev, H Forero, E Luteyn, JL TI Diversity of Theaceae and Bonnetiaceae in the montane Neotropics SO BIODIVERSITY AND CONSERVATION OF NEOTROPICAL MONTANE FORESTS LA English DT Proceedings Paper CT Neotropical Montane Forest Biodiversity and Conservation Symposium CY JUN 21-26, 1993 CL NEW YORK BOTAN GARDEN, BRONX, NY SP New York Bot Garden, Inst Syst Bot, Aarhus Univ, Dept Syst Bot HO NEW YORK BOTAN GARDEN C1 SMITHSONIAN INST,WASHINGTON,DC 20560. NR 0 TC 2 Z9 2 U1 0 U2 2 PU NEW YORK BOTANICAL GARDEN PI BRONX PA BRONX, NY 10458 BN 0-89327-400-3 PY 1995 BP 365 EP 375 PG 11 WC Ecology; Forestry; Geography SC Environmental Sciences & Ecology; Forestry; Geography GA BE64L UT WOS:A1995BE64L00029 ER PT B AU Funk, VA Robinson, H McKee, GS Pruski, JF AF Funk, VA Robinson, H McKee, GS Pruski, JF BE Churchill, SP Balslev, H Forero, E Luteyn, JL TI Neotropical montane compositae with an emphasis on the Andes SO BIODIVERSITY AND CONSERVATION OF NEOTROPICAL MONTANE FORESTS LA English DT Proceedings Paper CT Neotropical Montane Forest Biodiversity and Conservation Symposium CY JUN 21-26, 1993 CL NEW YORK BOTAN GARDEN, BRONX, NY SP New York Bot Garden, Inst Syst Bot, Aarhus Univ, Dept Syst Bot HO NEW YORK BOTAN GARDEN C1 SMITHSONIAN INST,WASHINGTON,DC 20560. NR 0 TC 12 Z9 14 U1 0 U2 0 PU NEW YORK BOTANICAL GARDEN PI BRONX PA BRONX, NY 10458 BN 0-89327-400-3 PY 1995 BP 451 EP 471 PG 21 WC Ecology; Forestry; Geography SC Environmental Sciences & Ecology; Forestry; Geography GA BE64L UT WOS:A1995BE64L00037 ER PT J AU PUKAZHENTHI, BS WILDT, DE OTTINGER, MA HOWARD, JG AF PUKAZHENTHI, BS WILDT, DE OTTINGER, MA HOWARD, JG TI INHIBITION OF ACROSOME REACTION AND OOCYTE PENETRATION IN NORMOSPERMIC DOMESTIC CATS BY PROTEIN-TYROSINE KINASE INHIBITORS SO BIOLOGY OF REPRODUCTION LA English DT Meeting Abstract C1 SMITHSONIAN INST,NATL ZOO PK,WASHINGTON,DC 20008. SMITHSONIAN INST,CONSERVAT & RES CTR,WASHINGTON,DC 20008. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC STUDY REPRODUCTION PI MADISON PA 1526 JEFFERSON ST, MADISON, WI 53711-2106 SN 0006-3363 J9 BIOL REPROD JI Biol. Reprod. PY 1995 VL 52 SU 1 BP 58 EP 58 PG 1 WC Reproductive Biology SC Reproductive Biology GA RD902 UT WOS:A1995RD90200008 ER PT J AU LONG, JA WILDT, DE PUKAZHENTHI, BS WOLFE, BA DONOGHUE, AM HOWARD, JG AF LONG, JA WILDT, DE PUKAZHENTHI, BS WOLFE, BA DONOGHUE, AM HOWARD, JG TI INABILITY OF STRUCTURALLY-NORMAL, SWIM-UP SEPARATED SPERMATOZOA FROM TERATOSPERMIC DOMESTIC CATS TO ACROSOME REACT SO BIOLOGY OF REPRODUCTION LA English DT Meeting Abstract C1 SMITHSONIAN INST,NATL ZOOL PK,WASHINGTON,DC 20008. SMITHSONIAN INST,CONSERVAT & RES CTR,WASHINGTON,DC 20008. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SOC STUDY REPRODUCTION PI MADISON PA 1526 JEFFERSON ST, MADISON, WI 53711-2106 SN 0006-3363 J9 BIOL REPROD JI Biol. Reprod. PY 1995 VL 52 SU 1 BP 59 EP 59 PG 1 WC Reproductive Biology SC Reproductive Biology GA RD902 UT WOS:A1995RD90200011 ER PT J AU MOORMAN, EA BOYINGTON, S WIELEBNOWSKI, N BROWN, JL LASLEY, BL AF MOORMAN, EA BOYINGTON, S WIELEBNOWSKI, N BROWN, JL LASLEY, BL TI THE DIRECT ENZYME-IMMUNOASSAY OF SOLUBILIZED CHEETAH FECES FOR PROGESTERONE SO BIOLOGY OF REPRODUCTION LA English DT Meeting Abstract C1 UNIV CALIF DAVIS,CTR WILDLIFE HLTH,DAVIS,CA 95616. NATL ZOOL PK & CONSERVAT CTR,FRONT ROYAL,VA. NR 0 TC 1 Z9 1 U1 1 U2 1 PU SOC STUDY REPRODUCTION PI MADISON PA 1526 JEFFERSON ST, MADISON, WI 53711-2106 SN 0006-3363 J9 BIOL REPROD JI Biol. Reprod. PY 1995 VL 52 SU 1 BP 72 EP 72 PG 1 WC Reproductive Biology SC Reproductive Biology GA RD902 UT WOS:A1995RD90200063 ER PT J AU ROTH, TL MUNSON, L SWANSON, WF WILDT, DE AF ROTH, TL MUNSON, L SWANSON, WF WILDT, DE TI HISTOLOGICAL CHARACTERISTICS OF THE UTERINE ENDOMETRIUM AND CORPUS-LUTEUM DURING EARLY EMBRYOGENESIS AND THE RELATIONSHIP TO EMBRYONIC MORTALITY IN THE DOMESTIC CAT SO BIOLOGY OF REPRODUCTION LA English DT Meeting Abstract C1 SMITHSONIAN INST,CTR CONSERVAT & RES,FRONT ROYAL,VA. UNIV TENNESSEE,COLL VET MED,KNOXVILLE,TN 37996. NR 0 TC 0 Z9 0 U1 0 U2 2 PU SOC STUDY REPRODUCTION PI MADISON PA 1526 JEFFERSON ST, MADISON, WI 53711-2106 SN 0006-3363 J9 BIOL REPROD JI Biol. Reprod. PY 1995 VL 52 SU 1 BP 114 EP 114 PG 1 WC Reproductive Biology SC Reproductive Biology GA RD902 UT WOS:A1995RD90200230 ER PT J AU WOLFE, BA WILDT, DE AF WOLFE, BA WILDT, DE TI INFLUENCE OF INSEMINATION TIME AND DURATION OF COLD-STORAGE EX-SITU ON CAT OOCYTE FERTILIZATION AND DEVELOPMENT IN-VITRO SO BIOLOGY OF REPRODUCTION LA English DT Meeting Abstract C1 SMITHSONIAN INST,NATL ZOOL PK,CONSERVAT & RES CTR,FRONT ROYAL,VA 22630. NR 0 TC 0 Z9 0 U1 0 U2 2 PU SOC STUDY REPRODUCTION PI MADISON PA 1526 JEFFERSON ST, MADISON, WI 53711-2106 SN 0006-3363 J9 BIOL REPROD JI Biol. Reprod. PY 1995 VL 52 SU 1 BP 128 EP 128 PG 1 WC Reproductive Biology SC Reproductive Biology GA RD902 UT WOS:A1995RD90200286 ER PT J AU LOVEJOY, TE AF LOVEJOY, TE TI WILL EXPECTEDLY THE TOP BLOW-OFF - ENVIRONMENTAL TRENDS AND THE NEED FOR CRITICAL DECISION-MAKING SO BIOSCIENCE LA English DT Article RP LOVEJOY, TE (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 4 TC 1 Z9 1 U1 0 U2 0 PU AMER INST BIOL SCI PI WASHINGTON PA 730 11TH STREET, NW, WASHINGTON, DC 20001-4521 SN 0006-3568 J9 BIOSCIENCE JI Bioscience PY 1995 SU S BP S3 EP S6 PG 4 WC Biology SC Life Sciences & Biomedicine - Other Topics GA RB762 UT WOS:A1995RB76200002 ER PT J AU DORR, LJ AF DORR, LJ TI PLANT COLLECTING ALONG THE LOWER ORINOCO, VENEZUELA - RUSBY,H.H. AND SQUIRES,R.W. (1896) SO BRITTONIA LA English DT Article DE HENRY HURD RUSBY (1855-1940); ROY WHITE SQUIRES (FL 1896-1932); VENEZUELA; RIO ORINOCO AB The plant collecting trip by H. H. Rusby and R. W. Squires in early 1896 to the lower Rio Orinoco, Venezuela, was sponsored by The Orinoco Company Limited, which was promoted by many residents of Faribault, Rice Co., Minnesota, U.S.A. In February 1896, the company formed an exploring party in order to map a large concession of approximately 10,000,000 acres that they had received from the Venezuelan government and to prospect the mineral deposits, study the vegetation, and ascertain the conditions affecting colonization of the concession. The botanical work was entrusted to Rusby, who, with the assistance of squires and an unnamed laborer from Trinidad, collected almost 500 numbers of vascular plants in sets as large as thirty-two. Rusby indicated that he spent only 51 days in the field and lost a week of that time to an accident that befell the explorers. He was less constrained than the Minnesotans (who were promoting development), and he wrote that botanical exploration was hampered also by the inundation of the forests and savannahs with each tide, the lack of trails, and the large numbers of annoying insects and poisonous snakes. An annotated catalog of 43 new taxa of vascular plants based on Rusby and Squires's collection is provided. Lectotypes are designated for Tachigalia rusbyi Harms (Fabaceae), Cupania semidentata Radlk. (Sapindaceae), and Solanum sacupanense Rusby (Solanaceae). A gazetteer of the localities cited in Rusby's held book and in publications pertaining to the Orinoco trip is appended. RP DORR, LJ (reprint author), SMITHSONIAN INST,DEPT BOT,NHB-166,WASHINGTON,DC 20560, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK BOTANICAL GARDEN PI BRONX PA PUBLICATIONS DEPT, BRONX, NY 10458 SN 0007-196X J9 BRITTONIA JI Brittonia PD JAN-MAR PY 1995 VL 47 IS 1 BP 1 EP 20 DI 10.2307/2807242 PG 20 WC Plant Sciences SC Plant Sciences GA QQ606 UT WOS:A1995QQ60600001 ER PT J AU WASSHAUSEN, DC MCCLELLAN, T AF WASSHAUSEN, DC MCCLELLAN, T TI BEGONIA MARIANNENSIS (BEGONIACEAE), A NEW SPECIES FROM TRINIDAD, WEST-INDIES SO BRITTONIA LA English DT Article DE BEGONIA; TRINIDAD; BEGONIACEAE AB Begonia(sect. Begoniastrum) mariannensis is described, illustrated, and compared with its closest relative, B. glandulifera Griseb., likewise from Trinidad. The new taxon differs markedly in its much smaller habit, distinctly differently shaped leaf blades, and its much-reduced peduncles. RP WASSHAUSEN, DC (reprint author), SMITHSONIAN INST,DEPT BOT,WASHINGTON,DC 20560, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU NEW YORK BOTANICAL GARDEN PI BRONX PA PUBLICATIONS DEPT, BRONX, NY 10458 SN 0007-196X J9 BRITTONIA JI Brittonia PD JAN-MAR PY 1995 VL 47 IS 1 BP 21 EP 23 DI 10.2307/2807243 PG 3 WC Plant Sciences SC Plant Sciences GA QQ606 UT WOS:A1995QQ60600002 ER PT J AU FOLMAR, LC HARSHBARGER, J BAUMANN, PC GARDNER, G BONOMELLI, S AF FOLMAR, LC HARSHBARGER, J BAUMANN, PC GARDNER, G BONOMELLI, S TI PATHOLOGICAL AND SERUM CHEMISTRY PROFILES OF BROWN BULLHEADS (AMEIURUS-NEBULOSUS) FROM THE BLACK RIVER AND OLD WOMAN CREEK, OHIO SO BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY LA English DT Article ID PINFISH LAGODON-RHOMBOIDES; BLOOD-CHEMISTRY; FISH; FREQUENCIES; LAKE C1 SMITHSONIAN INST, MRC 163, REGISTRY TUMORS LOWER ANIM, WASHINGTON, DC 20560 USA. US FISH & WILDLIFE SERV, COLUMBUS, OH 43210 USA. US EPA, NARRAGANSETT, RI 02882 USA. UNIV W FLORIDA, DEPT BIOL, PENSACOLA, FL 32514 USA. RP FOLMAR, LC (reprint author), US EPA, 1 SABINE ISL DR, GULF BREEZE, FL 32561 USA. NR 18 TC 6 Z9 6 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 0007-4861 J9 B ENVIRON CONTAM TOX JI Bull. Environ. Contam. Toxicol. PD JAN PY 1995 VL 54 IS 1 BP 50 EP 59 PG 10 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA PU349 UT WOS:A1995PU34900008 PM 7756785 ER PT J AU BALDWIN, CC JOHNSON, GD AF BALDWIN, CC JOHNSON, GD TI A LARVA OF THE ATLANTIC FLASHLIGHT FISH, KRYPTOPHANARON ALFREDI (BERYCIFORMES, ANOMALOPIDAE), WITH A COMPARISON OF BERYCIFORM AND STEPHANOBERYCIFORM LARVAE SO BULLETIN OF MARINE SCIENCE LA English DT Article ID PERCOMORPH PHYLOGENY; PISCES; SERRANIDAE; TELEOSTEI; SYMBIONTS; GENUS AB The first wildcaught larva of a flashlight fish is described from a single specimen of Krypfophanaron alfredi, 6.2 mm NL, collected with a midwater trawl in the Tongue of the Ocean, Bahamas. The larva lacks light organs, but an antrorse projection on each side of the snout represents at least the stalk of an incipient light organ. Other distinguishing features of larval Kryprophanaron include an elongate, heavily pigmented pelvic fin; a patch of pigment on and between the anteriormost dorsal-fin spines; numerous melanophores covering the head and trunk (but conspicuously absent on the caudal peduncle); prominent head spines and spiny scales. The distribution of head spines among larvae of major acanthomorph lineages is confusing phylogenetically, and larval specializations do not help resolve current controversy about ''beryciform'' monophyly. Larval morphology provides some support for a close relationship between the Berycidae and other berycoid families and corroborates hypotheses based on adult characters that: Anoplogastridae, Diretmidae, Anomalopidae, Trachichthyidae, and Monocentridae form a natural assemblage; anoplogastrids and diretmids are sister taxa; and trachichthyoids (anomalopids, trachichthyids, and monocentrids) are monophyletic. Larval features highlight a need to reassess relationships among trachichthyoids. RP BALDWIN, CC (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,WASHINGTON,DC 20560, USA. NR 55 TC 9 Z9 10 U1 1 U2 4 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD JAN PY 1995 VL 56 IS 1 BP 1 EP 24 PG 24 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA QG622 UT WOS:A1995QG62200001 ER PT J AU VORONTSOVA, M COLE, L AF VORONTSOVA, M COLE, L TI A NEW SPECIES OF PYURA (ASCIDIACEA) FROM SOUTH VIETNAM SO BULLETIN OF MARINE SCIENCE LA English DT Article AB Pyura camranica new species is described from South Vietnam. Some features are compared to several other species of Pyura. RP VORONTSOVA, M (reprint author), SMITHSONIAN INST,NATL MUSEUM AMER HIST,DEPT INVERTEBRATE ZOOL,STOP 163,WASHINGTON,DC 20560, USA. NR 27 TC 2 Z9 3 U1 0 U2 0 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD JAN PY 1995 VL 56 IS 1 BP 312 EP 318 PG 7 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA QG622 UT WOS:A1995QG62200022 ER PT S AU STARK, AA AF STARK, AA BE Zepeda, A TI Prospects for submillimeter-wave astronomy from the Antarctic plateau SO CAM-94 PHYSICS MEETING SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT CAM-94 Physics Meeting CY SEP, 1994 CL CANCUN, MEXICO SP Consejo Nacl Ciencia & Tecnol, Natl Sci Fdn, Univ Nacl Autonoma Mexico, Univ Autonoma Metropolitana, UNESCO, Phys Act Council, Inst Politecn Investigac & Estudios Avanzados, Ctr Latino Amer Fis, Ctr Latino Amer Fis Mexico, Univ Rochester, Govt State Quintana Roo C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-491-0 J9 AIP CONF PROC PY 1995 VL 342 BP 120 EP 124 PG 5 WC Astronomy & Astrophysics; Biophysics; Optics; Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Physics, Nuclear; Physics, Mathematical SC Astronomy & Astrophysics; Biophysics; Optics; Physics GA BE17G UT WOS:A1995BE17G00013 ER PT J AU REID, JW AF REID, JW TI REDESCRIPTION OF PARASTENOCARIS-BREVIPES KESSLER AND DESCRIPTION OF A NEW SPECIES OF PARASTENOCARIS (COPEPODA, HARPACTICOIDA, PARASTENOCARIDIDAE) FROM THE USA SO CANADIAN JOURNAL OF ZOOLOGY-REVUE CANADIENNE DE ZOOLOGIE LA English DT Article ID STREAM; MEIOFAUNA; CRUSTACEA; DYNAMICS; VIRGINIA; BENTHOS AB Parastenocaris brevipes Kessler is redescribed and its presence in North America is established through comparison of specimens from the U.S.A., Finland, and Germany. Parastenocaris wilsoni Borutskii, Parastenocaris starretti Pennak, Parastenocaris biwae Miura, and Parastenocaris sp. 2 Strayer (Strayer, D.L. 1988. Stygologia, 4: 279-291.) are assigned to the synonymy of P. brevipes. Biwaecaris Jakobi is a synonym of Parastenocaris Kessler. Some North American records of P. brevipes or P. starretti refer in fact to P. brevipes, other records to a presently undescribed species. Newly verified records of P. brevipes include Massachusetts, Michigan, New Hampshire, New York, Virginia, and Wisconsin in the U.S.A., and Lake Biwa, Japan. Parastenocaris trichelata, new species, is described from Virginia, U.S.A. The taxon is distinguished in both sexes by the combination of the long slender caudal ramus with ail setae inserted in the distal half and by the medial spine of the leg 1 basipodite, and in the male by the leg 4 with slender hyaline endopodite and 3 spines on the basipodite medial to the endopodite. The new species little resembles any known North American parastenocaridid, nor is it assignable to any presently defined species-group in the genus. RP REID, JW (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT INVERTEBRATE ZOOL,MRC-163,WASHINGTON,DC 20560, USA. NR 67 TC 34 Z9 36 U1 0 U2 1 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0008-4301 J9 CAN J ZOOL JI Can. J. Zool.-Rev. Can. Zool. PD JAN PY 1995 VL 73 IS 1 BP 173 EP 187 DI 10.1139/z95-020 PG 15 WC Zoology SC Zoology GA QY711 UT WOS:A1995QY71100020 ER PT B AU Dobrzycka, D Kenyon, SJ AF Dobrzycka, D Kenyon, SJ BE Bianchini, A DellaValle, M Orio, M TI The CV-like short timescale light variations observed in symbiotic stars SO CATACLYSMIC VARIABLES SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Meeting Abstract CT Conference on Cataclysmic Variables CY JUN 20-24, 1994 CL ABANO TERME, ITALY SP CNR, Italian Space Ind Alenia, Banca Antoniana, Community Council Abano, Community Council Padova, Univ Padova, Astronom Observatory Padova, Int Sci Fdn C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3676-3 J9 ASTROPHYS SPACE SC L PY 1995 VL 205 BP 109 EP 109 PG 1 WC Neurosciences SC Neurosciences & Neurology GA BE85N UT WOS:A1995BE85N00017 ER PT B AU Proga, D Kenyon, SJ AF Proga, D Kenyon, SJ BE Bianchini, A DellaValle, M Orio, M TI Can hydrogen emission lines of PU Vul be produced in the outer atmosphere of the red giant component? SO CATACLYSMIC VARIABLES SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Meeting Abstract CT Conference on Cataclysmic Variables CY JUN 20-24, 1994 CL ABANO TERME, ITALY SP CNR, Italian Space Ind Alenia, Banca Antoniana, Community Council Abano, Community Council Padova, Univ Padova, Astronom Observatory Padova, Int Sci Fdn C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3676-3 J9 ASTROPHYS SPACE SC L PY 1995 VL 205 BP 174 EP 174 PG 1 WC Neurosciences SC Neurosciences & Neurology GA BE85N UT WOS:A1995BE85N00056 ER PT J AU FARRELLY, D UZER, T AF FARRELLY, D UZER, T TI NORMALIZATION AND THE DETECTION OF INTEGRABILITY - THE GENERALIZED VAN-DER-WAALS POTENTIAL SO CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY LA English DT Article DE DYNAMICS; HAMILTONIAN SYSTEMS; KEPLERIAN SYSTEMS; DEGENERACY; INTEGRABILITY; HYDROGEN ATOM AB Deprit and Miller have conjectured that normalization of integrable Hamiltonians may produce normal forms exhibiting degenerate equilibria to very high order. Several examples in the class of coupled elliptic oscillators are known. In order to test the utility of normalization as a detector of integrability we normalize, to high order, a perturbed Keplerian system known to have several integrable limits; the generalized van der Waals Hamiltonian for a hydrogen atom. While the separable limits give rise to high order degeneracy we find a non-separable, integrable limit for which the normal form does not exhibit degeneracy. We conclude that normalization may, in certain cases, indicate integrability but is not guaranteed to uncover all integrable limits. RP FARRELLY, D (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,INST THEORET ATOM & MOLEC PHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 13 Z9 13 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0923-2958 J9 CELEST MECH DYN ASTR JI Celest. Mech. Dyn. Astron. PD JAN PY 1995 VL 61 IS 1 BP 71 EP 95 DI 10.1007/BF00051689 PG 25 WC Astronomy & Astrophysics; Mathematics, Interdisciplinary Applications SC Astronomy & Astrophysics; Mathematics GA QG678 UT WOS:A1995QG67800004 ER PT J AU PAN, RS SU, RK SU, CG AF PAN, RS SU, RK SU, CG TI SCALAR WORMHOLE AT FINITE-TEMPERATURE SO CHINESE PHYSICS LETTERS LA English DT Article ID FIELDS; GRAVITY AB The wormhole solution of a finite temperature scalar phi(4) field coupled to gravity is given. It is shown that Hubble constant and the size of the wormhole neck all increase with temperature. Temperature dependences for other physical properties of wormhole are also discussed. C1 CHINA CTR ADV SCI & TECHNOL,WORLD LAB,BEIJING 100080,PEOPLES R CHINA. FUDAN UNIV,DEPT PHYS,SHANGHAI 200433,PEOPLES R CHINA. ACAD SINICA,SHANGHAI OBSERV,SHANGHAI 200030,PEOPLES R CHINA. RP PAN, RS (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU ALLERTON PRESS INC PI NEW YORK PA 150 FIFTH AVE, NEW YORK, NY 10011 SN 0256-307X J9 CHINESE PHYS LETT JI Chin. Phys. Lett. PY 1995 VL 12 IS 5 BP 261 EP 264 PG 4 WC Physics, Multidisciplinary SC Physics GA RD431 UT WOS:A1995RD43100002 ER PT S AU LARSON, GC AF LARSON, GC BE McConathy, DR Korn, P TI A national strategic plan for space: The public perspective SO CIVIL SPACE IN THE CLINTON ERA, 32ND GODDARD MEMORIAL SYMPOSIUM/PARTNERS IN SPACE ... 2001, 41ST ANNUAL MEETING SE SCIENCE AND TECHNOLOGY SERIES LA English DT Proceedings Paper CT 32nd Goddard Memorial Symposium on Civil Space in the Clinton Era/41st Annual Meeting of the American-Astronautical-Society on Partners in Space - 2001 CY MAR 01-02, 1994 CL CRYSTAL CITY, VA SP AIAA, Natl Capitol Sect, Allied Signal Tech Serv, NASA Alumni League, Natl Space Club, Natl Space Soc, Northrop Grumann, Pratt & Whitney, Int Soc Opt Engn, Planetary Soc, TRW Space & Electr Grp, Women Aerosp C1 SMITHSONIAN INST,WASHINGTON,DC 20560. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0278-4017 BN 0-87703-397-8 J9 SCI TECH PY 1995 VL 85 BP 65 EP 69 PG 5 WC Engineering, Aerospace SC Engineering GA BD56Y UT WOS:A1995BD56Y00010 ER PT B AU Lin, H Kirshner, RP Shectman, SA Landy, SD Oemler, A Tucker, DL Schechter, PL AF Lin, H Kirshner, RP Shectman, SA Landy, SD Oemler, A Tucker, DL Schechter, PL BE Maurogordato, S Balkowski, C Tao, C TranThanhVan, J TI The power spectrum of galaxy clustering in the Las Campanas Redshift Survey SO CLUSTERING IN THE UNIVERSE SE MORIOND ASTROPHYSICS MEETINGS LA English DT Proceedings Paper CT XXXth Rencontres de Moriond on Clustering in the Universe CY MAR 11-18, 1995 CL LES ARCS, FRANCE SP CNRS, CEN Saclay, Observ Paris, Univ Paris 7, Ctr Natl Etudes Spatiales, European Econ Comm, Human & Mobil Program, Minist Affairs Etrangeres, SOROS Fdn AB We present the power spectrum P(k), over scales lambda = 2 pi/k = 5 - 400 h(-1) Mpc, for a magnitude-limited sample of 19276 Las Campanas Redshift Survey (LCRS) galaxies, with average redshift z approximate to 0.1. The LCRS P(k) may be approximated as oc k(-1.8) for small scales lambda = 5 - 30 h(-1) Mpc, changing to alpha k(1+/-1) for large scales lambda approximate to 200 - 400 h(-1) Mpc. The overall amplitude corresponds to sigma(8) = 1 in redshift space. We also compare our results to those of several other redshift surveys. For lambda less than or similar to 100 h-l Mpc, the LCRS P(k) is roughly similar in shape to the P(k) of other surveys, but with an amplitude differing from some of the other samples, possibly because of inherent clustering differences among different types of galaxies. For lambda greater than or similar to 100 h(-1) Mpc, the LCRS results are consistent with those of other surveys, given the large errors among all the surveys on these scales. RP Lin, H (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-189-7 J9 MORIOND AST PY 1995 BP 35 EP 38 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG71Q UT WOS:A1995BG71Q00005 ER PT B AU Kolatt, T AF Kolatt, T BE Maurogordato, S Balkowski, C Tao, C TranThanhVan, J TI Is the density distribution of clusters non-Gaussian? SO CLUSTERING IN THE UNIVERSE SE MORIOND ASTROPHYSICS MEETINGS LA English DT Proceedings Paper CT XXXth Rencontres de Moriond on Clustering in the Universe CY MAR 11-18, 1995 CL LES ARCS, FRANCE SP CNRS, CEN Saclay, Observ Paris, Univ Paris 7, Ctr Natl Etudes Spatiales, European Econ Comm, Human & Mobil Program, Minist Affairs Etrangeres, SOROS Fdn AB The one-point probability distribution function (PDF) is computed for the 25 h(-1) Mpc-smoothed density field of rich clusters of galaxies in the Abell/ACO catalogs. The observed PDF is compared to the PDFS drawn similarly from mock catalogs of clusters in cosmological simulations of Gaussian and several non-Gaussian initial conditions. Several statistics allow significant rejection of the non-Gaussian models tested here, and fail to reject the Gaussian model. A comparison with the predictions oi second-order perturbation theory and a log-normal model for CDM Gaussian initial conditions yield a linear biasing factor b(c)/b(o) similar or equal to 4 and b(c)/b(o) similar or equal to 3.7 for R greater than or equal to 0 clusters. RP Kolatt, T (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-189-7 J9 MORIOND AST PY 1995 BP 241 EP 248 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG71Q UT WOS:A1995BG71Q00035 ER PT B AU MCLAUGHLIN, BM GILLAN, CJ AF MCLAUGHLIN, BM GILLAN, CJ BE Huo, WM Gianturco, FA TI ELECTRON COLLISIONS WITH THE HE2+ CATION SO COMPUTATIONAL METHODS FOR ELECTRON-MOLECULE COLLISIONS LA English DT Proceedings Paper CT Workshop on Comparative Study of Current Methodologies in Electron-Molecule Scattering CY MAR 11-13, 1993 CL HARVARD SMITHSONIAN CTR ASTROPHYS, INST THEORET ATOM & MOLEC PHYS, CAMBRIDGE, MA SP HARVARD SMITHSONIAN CTR ASTROPHYS, INST THEORET ATOM & MOLEC PHYS HO HARVARD SMITHSONIAN CTR ASTROPHYS, INST THEORET ATOM & MOLEC PHYS C1 HARVARD SMITHSONIAN CTR ASTROPHYS,INST THEORET ATOM & MOLEC PHYS,CAMBRIDGE,MA 02138. NR 0 TC 4 Z9 4 U1 0 U2 2 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-44911-0 PY 1995 BP 255 EP 263 PG 9 WC Physics, Atomic, Molecular & Chemical SC Physics GA BD02D UT WOS:A1995BD02D00011 ER PT J AU LUHR, JF PIER, JG ARANDAGOMEZ, JJ PODOSEK, FA AF LUHR, JF PIER, JG ARANDAGOMEZ, JJ PODOSEK, FA TI CRUSTAL CONTAMINATION IN EARLY BASIN AND RANGE HAWAIITES OF THE LOS ENCINOS VOLCANIC FIELD, CENTRAL MEXICO SO CONTRIBUTIONS TO MINERALOGY AND PETROLOGY LA English DT Article ID WESTERN UNITED-STATES; SAN-LUIS-POTOSI; LATE CENOZOIC EXTENSION; MEDICINE LAKE VOLCANO; TRANS-PECOS TEXAS; TRACE-ELEMENT; ULTRAMAFIC XENOLITHS; CONTINENTAL-CRUST; UPPER MANTLE; ISOTOPE GEOCHEMISTRY AB The Los Encinos Volcanic Field (LEVF) consists of Miocene (10.6-13.6 Ma) hawaiitic volcanic necks and lava-capped mesas that crop out sparsely over an area of 11,500 km(2) at the eastern margin of the Mexican Basin and Range Province (BRP). The LEVF rocks are similar to other early extensional hawaiites from the southern BRP, and provide numerous contrasts with younger basanites and alkali basalts that erupted during the Quaternary at the Ventura and Santo Domingo Volcanic Fields about 100 km to the south. A suite of 18 LEVF hawaiites was studied in thin section, and analyzed for mineral compositions, whole-rock major and trace element compositions, and Sr, Nd, and Pb isotopic ratios. All samples contain the stable minerals plagioclase (An(53-64)), olivine (Fo(61-88)), clinopyroxene, titanomagnetite, and minor biotite. Most samples also contain a complex assemblage of resorbed and reacted xenocrysts and megacrysts. Some of these minerals appear to have crystallized slowly from related, but more differentiated magmas, but other xenocrysts were clearly derived from lower-crustal, high-grade orthogneisses and paragneisses that are found as large xenoliths in the nearby Quaternary volcanic fields. Quartz xenocrysts are especially common in many hawaiites (up to 3.9 vol%) and show a wide range of reaction styles. One sample contains micro-xenoliths of sillimanite- and quartz-bearing paragneiss with fine-grained domains that are interpreted as coronal structures related to original garnet xenocrysts. The geochemical effects of crustal contamination in the LEVF hawaiites vary widely. Five samples appear to be essentially uncontaminated (type U). Aside from being somewhat differentiated from a more primitive parent, the type-U samples can be used to infer the geochemistry of the mantle that was melting during the early stages of basin-and-range rifting. Type-U samples range up to epsilon(Nd)=+7.6 and down to Sr-87/Sr-86 = 0.70286 and Pb-206/Pb-204 = 18.74, compositions that are more extreme than any of the nearby Quaternary volcanic rocks. The other 13 samples are divided into two contamination types, A and B. Both types show trends toward higher Sr-87/Sr-86 (to 0.7040) and Pb-206/Pb-2O4 (to 18.98), lower epsilon(Nd) (to +3.1), and elevated Yb, which appear to reflect bulk or AFC-style contamination by granulites, particularly garnet-bearing paragneisses. Type-A hawaiites also show selective enrichments in Cs, Rb, Th: Sb, U, Pb, K, and Si. These elements were probably transferred into the type-A hawaiitic magmas through mixing with low-degree partial melts from deep-crustal granulites. The enrichments of these elements in type-A hawaiites complement the depletions of many of these same elements in high-grade granulites worldwide and provide insight into the origin of those depletions. Mixing models between type-U hawaiites and paragneiss xenoliths indicate that up to 45% of the Pb found in type-A hawaiites is crustally derived. In comparison with more mafic Quaternary basanitic rocks from the volcanic fields to the south, which carried large peridotite and granulite xenoliths to the surface, the LEVF hawaiites are relatively differentiated and megacryst rich, but free of large xenoliths, and show a wide variety of petrographic and geochemical evidence for crustal contamination. These differences probably reflect the slow and interrupted ascent of the LEVF hawaiites during early stages of basin-and-range extension in the Miocene, when the crust had a somewhat lower density and the entire lithosphere was relatively thick and cool. We argue that Quaternary basanites were able to ascend significantly faster through the thinner, hotter, and more fractured and extended lithosphere, whose crust was made denser by mafic intrusions during the preceding magmatic episode. Consequently the Quaternary basanites rose without stagnating and interacting with crustal lithologies, and without losing their entrained peridotite xenoliths. C1 JACOBS ENGN GRP INC,WELDON SPRING SITE REMEDIAL ACT PROJECT,ST CHARLES,MO 63304. UNIV NACL AUTONOMA MEXICO,INST GEOL,ESTAC REG CTR,GUANAJUATO,MEXICO. WASHINGTON UNIV,MCDONNELL CTR SPACE SCI,DEPT EARTH & PLANETARY SCI,ST LOUIS,MO 63130. RP LUHR, JF (reprint author), SMITHSONIAN INST,DEPT MINERAL SCI,NHB-119,WASHINGTON,DC 20560, USA. NR 80 TC 34 Z9 36 U1 0 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0010-7999 J9 CONTRIB MINERAL PETR JI Contrib. Mineral. Petrol. PD JAN PY 1995 VL 118 IS 4 BP 321 EP 339 DI 10.1007/s004100050018 PG 19 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA QD320 UT WOS:A1995QD32000001 ER PT J AU FERRARI, FD AF FERRARI, FD TI IDENTITY OF THE DISTAL SEGMENTS OF THE MAXILLA-2 AND MAXILLIPED IN COPEPODS - NEW TEETH FOR CLAUS,CARL OLD SAW SO CRUSTACEANA LA English DT Article ID DEVELOPMENTAL STAGES; ORIGIN AB Interpretations by Claus and Giesbrecht of the identity of the distal segments of the maxilla 2 and maxilliped in copepods are reviewed. The developmental pattern of setal additions to these appendages suggests that the distal segments of maxilla 2 are exopodal, while those of the maxilliped are endopodal; these data are consistent with the interpretation of Claus. Information about the genetic regulation of development of a fruitfly, and a reinterpretation of a fossil arthropod also support Claus. A general hypothesis identifies a compartment with a contralateral pair of uniramal limbs as the basic division of the body of an ancestral arthropod. Somites, crustacean biramal appendages, and insect uniramal appendages are derived. The general hypothesis is used to explain the structure of a copepod including maxilIa 2 and maxilliped. RP FERRARI, FD (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,WASHINGTON,DC 20560, USA. NR 29 TC 2 Z9 2 U1 0 U2 0 PU E J BRILL PI LEIDEN PA PO BOX 9000, 2300 PA LEIDEN, NETHERLANDS SN 0011-216X J9 CRUSTACEANA JI Crustaceana PD JAN PY 1995 VL 68 BP 103 EP 110 PN 1 PG 8 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA QF038 UT WOS:A1995QF03800010 ER PT S AU KOCHANEK, CS AF KOCHANEK, CS BE Holt, SS Bennett, CL TI Gravitational lens constraints on cosmology and cosmogony SO DARK MATTER SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 5th Annual October Astrophysics Conference - Dark Matter CY OCT, 1994 CL COLLEGE PK, MD SP Goddard Space Flight Ctr, Univ Maryland C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-438-4 J9 AIP CONF PROC PY 1995 IS 336 BP 297 EP 306 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD69S UT WOS:A1995BD69S00046 ER PT S AU BARTELMANN, M NARAYAN, R AF BARTELMANN, M NARAYAN, R BE Holt, SS Bennett, CL TI Gravitational lensing and the mass distribution of clusters SO DARK MATTER SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 5th Annual October Astrophysics Conference - Dark Matter CY OCT, 1994 CL COLLEGE PK, MD SP Goddard Space Flight Ctr, Univ Maryland C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 9 Z9 9 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-438-4 J9 AIP CONF PROC PY 1995 IS 336 BP 307 EP 319 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD69S UT WOS:A1995BD69S00047 ER PT S AU LOEB, A MAO, SD AF LOEB, A MAO, SD BE Holt, SS Bennett, CL TI Evidence from gravitational lensing for a non-thermal pressure support in the cluster of galaxies A2218 SO DARK MATTER SE AIP CONFERENCE PROCEEDINGS LA English DT Meeting Abstract CT 5th Annual October Astrophysics Conference - Dark Matter CY OCT, 1994 CL COLLEGE PK, MD SP Goddard Space Flight Ctr, Univ Maryland C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-438-4 J9 AIP CONF PROC PY 1995 IS 336 BP 330 EP 330 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD69S UT WOS:A1995BD69S00049 ER PT S AU BARTELMANN, M AF BARTELMANN, M BE Holt, SS Bennett, CL TI Measuring the bias factor with the weak lensing effect SO DARK MATTER SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 5th Annual October Astrophysics Conference - Dark Matter CY OCT, 1994 CL COLLEGE PK, MD SP Goddard Space Flight Ctr, Univ Maryland C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-438-4 J9 AIP CONF PROC PY 1995 IS 336 BP 335 EP 338 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD69S UT WOS:A1995BD69S00051 ER PT S AU BARTELMANN, M STEINMETZ, M WEISS, A AF BARTELMANN, M STEINMETZ, M WEISS, A BE Holt, SS Bennett, CL TI Are statistics with realistic cluster potentials SO DARK MATTER SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 5th Annual October Astrophysics Conference - Dark Matter CY OCT, 1994 CL COLLEGE PK, MD SP Goddard Space Flight Ctr, Univ Maryland C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-438-4 J9 AIP CONF PROC PY 1995 IS 336 BP 355 EP 358 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD69S UT WOS:A1995BD69S00056 ER PT B AU Forman, W David, L Jones, C AF Forman, W David, L Jones, C BE Guiderdoni, B Greene, G Hinds, D TranThanhVan, J TI X-ray observations of galaxy clusters and their cosmological implications SO DARK MATTER IN COSMOLOGY, CLOCKS AND TESTS OF FUNDAMENTAL LAWS SE MORIOND WORKSHOPS LA English DT Proceedings Paper CT XXXth Rencontres de Moriond on Dark Matter in Cosmology, Clocks and Tests of Fundamental Laws CY JAN 22-29, 1995 CL VILLARS SUR OLLON, SWITZERLAND SP CNRS, Inst Natl Phys Nucl & Phys Particules, CEA, Minist Enseignement Super & Rech, Int Sci Fdn AB We present two aspects of X-ray observations of galaxy clusters and their cosmological implications. First, we discuss the prevalence of substructure shown in X-ray surveys, especially the large survey of over 200 clusters made with the Einstein Observatory. We show that the fraction of clusters with substructure is large, around 40%. This high fraction is in good agreement with optical studies of smaller samples. The optical and X-ray data, in comparison to numerical simulations, suggest that the universe has a relatively high density with a cosmological density parameter, Omega greater than or similar to 0.5. The second topic related to cluster X-ray observations we discuss is the measurement of gas mass and gravitating mass. We compare the mass-to-light ratio for a variety of systems including early-type galaxies, groups, and rich clusters and find an approximately constant value of around 150 (in solar units). Thus, there is no change in the mass-to-light ratio with increasing mass (equivalently scale), consistent with CDM biased galaxy formation scenarios. We show that for a sample of clusters, the gas mass is a significant fraction of the total gravitating mass, which, at the largest scales, approaches 30%. RP Forman, W (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-178-1 J9 MORIOND WOR PY 1995 VL M86 BP 43 EP 52 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG71M UT WOS:A1995BG71M00005 ER PT B AU Vessot, RFC AF Vessot, RFC BE Guiderdoni, B Greene, G Hinds, D TranThanhVan, J TI Experimental techniques with highly stable clocks SO DARK MATTER IN COSMOLOGY, CLOCKS AND TESTS OF FUNDAMENTAL LAWS SE MORIOND WORKSHOPS LA English DT Proceedings Paper CT XXXth Rencontres de Moriond on Dark Matter in Cosmology, Clocks and Tests of Fundamental Laws CY JAN 22-29, 1995 CL VILLARS SUR OLLON, SWITZERLAND SP CNRS, Inst Natl Phys Nucl & Phys Particules, CEA, Minist Enseignement Super & Rech, Int Sci Fdn AB Modern metrology depends increasingly on the accuracy and frequency stability of atomic clocks. While accuracy of measurement with respect to the defined second of time is important for many aspects of metrology, the precision of experimental measurements depends very strongly upon the stability of the clock during the data-taking process. Today's atomic hydrogen masers produce signals with fractional frequency stability better than 1 x 10(-15) over intervals of 10(3) to 10(5) seconds Operation of a cryogenically cooled H-Maser has been demonstrated and the prospects for getting frequency stability better than 1 x 10(-16) appear to be realistic. Multi-link microwave systems to cope with the Doppler effect of spacecraft motion and of signal propagation through the earth's troposphere and ionosphere are described, including methods using time-correlation to cancel localized disturbances in very long signal paths. Applications of such high-stability oscillators (or clocks) to experiments performed in space are described and estimates of the precision of these experiments are made in terms of clock performance. Analyses of proposed tests of relativistic gravitation, of operation of a very long baseline interferometry (VLBI) system operated in space, and of a possible measurement of the quadrupole moment of the sun's mass distribution are discussed. A proposed space borne four-station VLBI system is described that could compare, with a precision of 3 x 10(-15) rad/sec, the rotation of a local inertial frame based on the velocity of light with the inertial frame defined by distant radio stars. This system could provide information on the behavior of missing matter. RP Vessot, RFC (reprint author), SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-178-1 J9 MORIOND WOR PY 1995 VL M86 BP 397 EP 416 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG71M UT WOS:A1995BG71M00043 ER PT J AU Lovejoy, TE AF Lovejoy, TE TI Recollections of Gerald Durrell SO DODO-JOURNAL OF THE WILDLIFE PRESERVATION TRUSTS LA English DT Item About an Individual RP Lovejoy, TE (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU JERSEY WILDLIFE PRESERVATION TRUST PI TRINITY PA LES AUGRES MANOR, TRINITY, JERSEY, ENGLAND JE3 5BP J9 DODO JI Dodo-J. Wildl. Preserv. Trusts PY 1995 IS 31 BP 7 EP 9 PG 3 WC Biodiversity Conservation; Ecology SC Biodiversity & Conservation; Environmental Sciences & Ecology GA UZ897 UT WOS:A1995UZ89700002 ER PT J AU BRAWN, JD KARR, JR NICHOLS, JD AF BRAWN, JD KARR, JR NICHOLS, JD TI DEMOGRAPHY OF BIRDS IN A NEOTROPICAL FOREST - EFFECTS OF ALLOMETRY, TAXONOMY, AND ECOLOGY SO ECOLOGY LA English DT Article DE ALLOMETRY; BIRDS; BODY SIZE; COMPARATIVE ANALYSIS; DEMOGRAPHY; JOLLY-SEBER MODELS; LIFE HISTORY; PANAMA; POPULATIONS; RECRUITMENT; SURVIVAL RATE; TROPICS ID LIFE-HISTORY TRAITS; BODY SIZE; POPULATION-DENSITY; PHYLOGENY; COMMUNITIES; COVARIATION; LONGEVITY; DYNAMICS; SURVIVAL; MAMMALS AB Comparative demographic studies of terrestrial vertebrates have included few samples of species from tropical forests. We analyzed 9 yr of mark-recapture data and estimated demographic parameters for 25 species of birds inhabiting lowland forests in. central Panama. These species were all songbirds (Order Passeriformes) ranging in mass from 7 to 57 g. Using Jolly-Seber stochastic models for open populations, we estimated annual survival rate, population size, and recruitment between sampling periods for each species. We then explored relationships between these parameters and attributes such as body size, phylogenetic affiliation, foraging guild, and social behavior. Larger birds had comparatively long life-spans and low recruitment, but body size was not associated with population size. After adjusting for effects of body size, we found no association between phylogenetic affiliation and any demographic trait. Ecological attributes, especially foraging guild, were more clearly associated with interspecific variation in all demographic traits. Ant-followers had comparatively long life-spans, but species that participate in flocks did not live longer than solitary species. The allometric associations we observed were consistent with those demonstrated in other studies of vertebrates; thus, these relationships appear to be robust. Our finding that ecological factors were more influential than phylogenetic affiliation contrasts with comparative studies of temperate-zone birds and suggests that the relative importance of environmental vs. historical factors varies geographically. C1 SMITHSONIAN TROP RES INST, BALBOA, PANAMA. UNIV WASHINGTON, INST ENVIRONM STUDIES, SEATTLE, WA 98195 USA. NATL BIOL SURVEY, PATUXENT WILDLIFE RES CTR, LAUREL, MD 20708 USA. NR 58 TC 49 Z9 50 U1 3 U2 22 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0012-9658 EI 1939-9170 J9 ECOLOGY JI Ecology PD JAN PY 1995 VL 76 IS 1 BP 41 EP 51 DI 10.2307/1940630 PG 11 WC Ecology SC Environmental Sciences & Ecology GA QC872 UT WOS:A1995QC87200005 ER PT J AU AGORAMOORTHY, G RUDRAN, R AF AGORAMOORTHY, G RUDRAN, R TI INFANTICIDE BY ADULT AND SUBADULT MALES IN FREE-RANGING RED HOWLER MONKEYS, ALOUATTA-SENICULUS, IN VENEZUELA SO ETHOLOGY LA English DT Article ID POPULATION; DENSITY AB After 15 males invaded troops of wild red howler monkeys (Alouatta seniculus) present in Venezuela during the period from Apr. 1989 to May 1991, five infant killings and eight infant disappearances occurred. Among the eight groups that were invaded, 10 infants of less than 3 mo old and three of over 5 mo old were killed either by the adult or subadult males, or disappeared. However, on the live occasions of invasion, none of the nine infants were killed. In two other groups, there were no infants present at the time of invasion. It was also noted that no infant of kin of the invading males was killed. At least six of the females that had lost their infant during such invasion subsequently copulated both with the invader as with the original resident male. In one case, a female copulated with the resident male of a neighbouring group. In the four cases of subadult males committing infanticide there was no immediate sexual access to the females. The data presented here are inconsistent with the reproductive sexual-advantage hypothesis, but consistent with the hypothesis concerning food competition. C1 SMITHSONIAN INST,CTR CONSERVAT & RES,NATL ZOOL PK,FRONT ROYAL,VA. NR 40 TC 35 Z9 39 U1 1 U2 17 PU BLACKWELL WISSENSCHAFTS VERLAG GMBH PI BERLIN PA KURFURSTENDAMM 57, D-10707 BERLIN, GERMANY SN 0179-1613 J9 ETHOLOGY JI Ethology PD JAN PY 1995 VL 99 IS 1 BP 75 EP 88 PG 14 WC Psychology, Biological; Behavioral Sciences; Zoology SC Psychology; Behavioral Sciences; Zoology GA QG515 UT WOS:A1995QG51500006 ER PT B AU ZOMBECK, MV CHAPPELL, JH KENTER, A MOORE, RW MURRAY, SS FRASER, GW SERIO, S AF ZOMBECK, MV CHAPPELL, JH KENTER, A MOORE, RW MURRAY, SS FRASER, GW SERIO, S BE Siegmund, OHW Vallerga, JV TI The high resolution camera (HRC) on the advanced x-ray astrophysics facility (AXAF) SO EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI CY JUL 12-14, 1995 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers DE X-RAYS; MICROCHANNEL PLATES; X-RAY OBSERVATORY; X-RAY ASTRONOMY; X-RAY SPECTROSCOPY C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 21 Z9 21 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1877-3 J9 P SOC PHOTO-OPT INS PY 1995 VL 2518 BP 96 EP 106 DI 10.1117/12.218408 PG 11 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Remote Sensing; Optics GA BE21T UT WOS:A1995BE21T00008 ER PT B AU ZOMBECK, MV DAVID, LP HARNDEN, FR KEARNS, K AF ZOMBECK, MV DAVID, LP HARNDEN, FR KEARNS, K BE Siegmund, OHW Vallerga, JV TI Orbital performance of the high resolution imager (HRI) on ROSAT SO EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI CY JUL 12-14, 1995 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers DE X-RAYS; MICROCHANNEL PLATES; X-RAY OBSERVATORY; X-RAY ASTRONOMY; X-RAY INSTRUMENTATION C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 24 Z9 24 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1877-3 J9 P SOC PHOTO-OPT INS PY 1995 VL 2518 BP 304 EP 321 DI 10.1117/12.218385 PG 18 WC Engineering, Aerospace; Astronomy & Astrophysics; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Astronomy & Astrophysics; Instruments & Instrumentation; Remote Sensing; Optics GA BE21T UT WOS:A1995BE21T00027 ER PT J AU REID, RP MACINTYRE, IG BROWNE, KM STENECK, RS MILLER, T AF REID, RP MACINTYRE, IG BROWNE, KM STENECK, RS MILLER, T TI MODERN MARINE STROMATOLITES IN THE EXUMA-CAYS, BAHAMAS - UNCOMMONLY COMMON SO FACIES LA English DT Article DE STROMATOLITE; THROMBOLITE; BAHAMAS; HOLOCENE OR RECENT ID SUBTIDAL STROMATOLITES AB Modern stromatolites in open marine environments, unknown until recently, are common throughout the Exuma Cays, Bahamas. They occur in three distinct settings: subtidal tidal passes, subtidal sandy embayments and intertidal beaches. These stromatolites have a relief of up to 2.5 m and occur in water depths ranging from intertidal to 10 m. Surfaces near the sediment-water interface are typically colonized by cyanobacterial mats, whereas high relief surfaces are commonly colonized by algal turf and other macroalgae such as Batophora, Acetabularia, and Sargassum. The internal structure of the stromatolites is characterized by millimeter-scale lamination defined by differential lithification of agglutinated sediment. In thin section, the lithified laminae appear as micritic horizons with distinct microstructures: they consist of thin micritic crusts (20-40 mu m thick) overlying layers of micritized sediment grains (200-1000 mu m thick); the micritized grains are cemented at point-contacts and are truncated along a surface of intense microboring. The Exuma stromatolites are built by cyanobacterial-dominated communities. These laminated prokaryotic structures grade to unlayered thrombolites built by eukaryotic algae. The variety of sites, settings and shapes of stromatolites in the Exuma Gays present excellent opportunities for future studies of stromatolite morphogenesis. C1 NATL MUSEUM NAT HIST,SMITHSONIAN INST,MRC 125,DEPT PALEOBIOL,WASHINGTON,DC 20560. RIDER UNIV,DEPT GEOL & MARINE SCI,LAWRENCEVILLE,NJ 08648. UNIV MAINE,DARLING MARINE CTR,DEPT OCEANOG,WALPOLE,ME 04573. RP REID, RP (reprint author), UNIV MIAMI,ROSENSTIEL SCH MARINE & ATMOSPHER SCI,4600 RICKENBACKER CAUSEWAY,MIAMI,FL 33149, USA. NR 27 TC 91 Z9 96 U1 2 U2 11 PU INSTITUT PALAONTOLOGIE UNIVERSITAT ERLANGEN-NURNBERG PI ERLANGEN PA LOEWENICHSTRABE 20, D-91054 ERLANGEN, GERMANY SN 0172-9179 J9 FACIES JI Facies PY 1995 VL 33 BP 1 EP 17 DI 10.1007/BF02537442 PG 17 WC Geology; Paleontology SC Geology; Paleontology GA TA215 UT WOS:A1995TA21500001 ER PT S AU Hazen, ML AF Hazen, ML BE Greiner, J Duerbeck, HW Gershberg, RE TI The plate collection at the Harvard College Observatory SO FLARES AND FLASHES SE LECTURE NOTES IN PHYSICS LA English DT Proceedings Paper CT 151st IAU Colloquium on Flares and Flashes CY DEC 05-09, 1994 CL SONNEBERG, GERMANY SP IAU C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN 33 PA HEIDELBERGER PLATZ 3, W-1000 BERLIN 33, GERMANY SN 0075-8450 BN 3-540-60057-4 J9 LECT NOTES PHYS PY 1995 VL 454 BP 397 EP 401 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE96G UT WOS:A1995BE96G00098 ER PT J AU Stafford, BJ Ferreira, FM AF Stafford, BJ Ferreira, FM TI Predation attempts on callitrichids in the Atlantic coastal rain forest of Brazil SO FOLIA PRIMATOLOGICA LA English DT Article DE predation; alarm calls; Callitrichidae; marmosets; tamarins; Mustelidae; Strigidae; Leontopithecus rosalia; Callithrix jacchus; Eira barbara; Athene cunicularia ID OWL PREDATION; LION TAMARINS; MORPHOLOGY; EVOLUTION; BEHAVIOR; SIGNALS C1 CUNY GRAD SCH & UNIV CTR,PROGRAM ANTHROPOL,NEW YORK,NY 10036. NEW YORK CONSORTIUM EVOLUTIONARY PRIMATOL,NEW YORK,NY. RP Stafford, BJ (reprint author), SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES,WASHINGTON,DC 20008, USA. NR 25 TC 13 Z9 16 U1 1 U2 6 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0015-5713 J9 FOLIA PRIMATOL JI Folia Primatol. PY 1995 VL 65 IS 4 BP 229 EP 233 PG 5 WC Zoology SC Zoology GA VG097 UT WOS:A1995VG09700007 ER PT J AU AGORAMOORTHY, G HSU, MJ AF AGORAMOORTHY, G HSU, MJ TI POPULATION STATUS AND CONSERVATION OF RED HOWLING MONKEYS AND WHILE-FRONTED CAPUCHIN MONKEYS IN TRINIDAD SO FOLIA PRIMATOLOGICA LA English DT Note DE RED HOWLERS; ALOUATTA SENICULUS; CAPUCHIN MONKEYS; CEBUS ALBIFRONS; CONSERVATION; GROUP SIZE; SEX RATIO; POPULATION DENSITY; TRINIDAD C1 NATL SUN YAT SEN UNIV,GRAD INST LIFE SCI,DEPT BIOL,KAOHSIUNG 80424,TAIWAN. SMITHSONIAN INST,NATL ZOOL PK,CONSERVAT & RES CTR,FRONT ROYAL,VA. NR 17 TC 5 Z9 5 U1 0 U2 3 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0015-5713 J9 FOLIA PRIMATOL JI Folia Primatol. PY 1995 VL 64 IS 3 BP 158 EP 162 DI 10.1159/000156847 PG 5 WC Zoology SC Zoology GA TH740 UT WOS:A1995TH74000007 PM 8529973 ER PT B AU Caldwell, N AF Caldwell, N BE Buzzoni, A Renzini, A Serrano, A TI Directions in dwarf elliptical galaxy studies SO FRESH VIEWS OF ELLIPTICAL GALAXIES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT INAOE International Meeting on Fresh Views of Elliptical Galaxies CY MAR 14-17, 1995 CL PUEBLA, MEXICO SP Inst Nacl Astrofis Opt & Electr, Sci & Technol Council Mexico, Govt State Puebla C1 UNIV ARIZONA,SMITHSONIAN ASTROPHYS OBSERV,TUCSON,AZ 85721. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-07-4 J9 ASTR SOC P PY 1995 VL 86 BP 93 EP 102 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF08U UT WOS:A1995BF08U00017 ER PT B AU Fabbiano, G AF Fabbiano, G BE Buzzoni, A Renzini, A Serrano, A TI X-ray properties of E and SO galaxies SO FRESH VIEWS OF ELLIPTICAL GALAXIES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT INAOE International Meeting on Fresh Views of Elliptical Galaxies CY MAR 14-17, 1995 CL PUEBLA, MEXICO SP Inst Nacl Astrofis Opt & Electr, Sci & Technol Council Mexico, Govt State Puebla C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 9 Z9 9 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-07-4 J9 ASTR SOC P PY 1995 VL 86 BP 103 EP 112 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF08U UT WOS:A1995BF08U00018 ER PT B AU vanderLinden, FR AF vanderLinden, FR BE Trimble, WF TI Progressives and the post office - Walter Folger Brown and the creation of United States air transportation SO FROM AIRSHIPS TO AIRBUS: THE HISTORY OF CIVIL AND COMMERCIAL AVIATION, VOL 2: PIONEERS AND OPERATIONS LA English DT Proceedings Paper CT International Conference on the History of Civil and Commercial Aviation CY AUG, 1992 CL SWISS TRANSPORT MUSEUM, LUZERN, SWITZERLAND SP Auburn Univ, Smithsonian Inst, Natl Air & Space Museum, Swiss Transport Museum HO SWISS TRANSPORT MUSEUM C1 SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SMITHSONIAN INST PRESS PI WASHINGTON PA 900 JEFFERSON DRIVE SW, WASHINGTON, DC 20560 BN 1-56098-468-6 PY 1995 BP 245 EP 260 PG 16 WC History SC History GA BF75H UT WOS:A1995BF75H00013 ER PT B AU Davies, REG AF Davies, REG BE Trimble, WF TI Facing the transport gridlock of the twenty-first century - Conclusion SO FROM AIRSHIPS TO AIRBUS: THE HISTORY OF CIVIL AND COMMERCIAL AVIATION, VOL 2: PIONEERS AND OPERATIONS LA English DT Proceedings Paper CT International Conference on the History of Civil and Commercial Aviation CY AUG, 1992 CL SWISS TRANSPORT MUSEUM, LUZERN, SWITZERLAND SP Auburn Univ, Smithsonian Inst, Natl Air & Space Museum, Swiss Transport Museum HO SWISS TRANSPORT MUSEUM C1 SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SMITHSONIAN INST PRESS PI WASHINGTON PA 900 JEFFERSON DRIVE SW, WASHINGTON, DC 20560 BN 1-56098-468-6 PY 1995 BP 281 EP 289 PG 9 WC History SC History GA BF75H UT WOS:A1995BF75H00015 ER PT S AU WEEKES, TC AF WEEKES, TC BE Signore, M Salati, P Vedrenne, G TI TeV gamma-ray astronomy, techniques SO GAMMA RAY SKY WITH COMPTON GRO AND SIGMA SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES C, MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Proceedings Paper CT NATO Advanced Study Institute on the Gamma Ray Sky with Compton GRO and SIGMA CY JAN 25-FEB 04, 1994 CL LES HOUCHES, FRANCE SP NATO, Sci Affairs Div C1 HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,AMADO,AZ 85645. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0258-2023 BN 0-7923-3440-X J9 NATO ADV SCI INST SE PY 1995 VL 461 BP 27 EP 38 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD83J UT WOS:A1995BD83J00003 ER PT S AU WEEKES, TC AF WEEKES, TC BE Signore, M Salati, P Vedrenne, G TI TeV gamma-ray astronomy, extragalactic sources SO GAMMA RAY SKY WITH COMPTON GRO AND SIGMA SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES C, MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Proceedings Paper CT NATO Advanced Study Institute on the Gamma Ray Sky with Compton GRO and SIGMA CY JAN 25-FEB 04, 1994 CL LES HOUCHES, FRANCE SP NATO, Sci Affairs Div C1 HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,AMADO,AZ 85645. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0258-2023 BN 0-7923-3440-X J9 NATO ADV SCI INST SE PY 1995 VL 461 BP 103 EP 111 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD83J UT WOS:A1995BD83J00009 ER PT S AU WEEKES, TC AF WEEKES, TC BE Signore, M Salati, P Vedrenne, G TI TeV gamma-ray astronomy, galactic sources SO GAMMA RAY SKY WITH COMPTON GRO AND SIGMA SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES C, MATHEMATICAL AND PHYSICAL SCIENCES LA English DT Proceedings Paper CT NATO Advanced Study Institute on the Gamma Ray Sky with Compton GRO and SIGMA CY JAN 25-FEB 04, 1994 CL LES HOUCHES, FRANCE SP NATO, Sci Affairs Div C1 HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,AMADO,AZ 85645. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0258-2023 BN 0-7923-3440-X J9 NATO ADV SCI INST SE PY 1995 VL 461 BP 197 EP 208 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD83J UT WOS:A1995BD83J00016 ER PT J AU KUNG, JH AF KUNG, JH TI QUANTIZATION OF CLOSED MINI-SUPERSPACE MODELS AS BOUND SPACES SO GENERAL RELATIVITY AND GRAVITATION LA English DT Article ID INFLATIONARY-UNIVERSE; QUANTUM-MECHANICS; COSMOLOGY; FLATNESS AB The Wheeler-DeWitt equation is applied to closed kappa > 0 Friedmann-Robertson-Walker metric with various combination of cosmological constant and matter (e.g., radiation or pressureless gas). It is shown that if the universe ends in the matter dominated era (e.g., radiation or pressureless gas) with zero cosmological constant, then the resulting Wheeler-DeWitt equation describes a bound state problem. As solutions of a non-degenerate bound state system, the eigen-wave functions are real (Hartle-Hawking). Furthermore, as a bound state problem, there exists a quantization condition that relates the curvature of the three space with the various energy densities of the universe. If we assume that our universe is closed, then the quantum number of our universe is N approximately (Gk)-1 approximately 10(122). The largeness of this quantum number is naturally explained by an early inflationary phase which resulted in a flat universe we observe today. It is also shown that if there is a cosmological constant LAMBDA > 0 in our universe that persists for all time, then the resulting Wheeler-DeWitt equation describes a non-bound state system, regardless of the magnitude of the cosmological constant. As a consequence, the wave functions are in general complex (Vilenkin). C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 36 TC 9 Z9 9 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0001-7701 J9 GEN RELAT GRAVIT JI Gen. Relativ. Gravit. PD JAN PY 1995 VL 27 IS 1 BP 35 EP 53 DI 10.1007/BF02105672 PG 19 WC Astronomy & Astrophysics; Physics, Multidisciplinary; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA QA225 UT WOS:A1995QA22500005 ER PT J AU SHEPARD, MK ARVIDSON, RE CAFFEE, M FINKEL, R HARRIS, L AF SHEPARD, MK ARVIDSON, RE CAFFEE, M FINKEL, R HARRIS, L TI COSMOGENIC EXPOSURE AGES OF BASALT FLOWS - LUNAR CRATER VOLCANIC FIELD, NEVADA SO GEOLOGY LA English DT Article ID PRODUCTION-RATES; CALIFORNIA; EVOLUTION; SURFACES; DESERT; ROCKS AB Cl-36 and Be-10 cosmogenic exposure age data for the Black Rock basaltic lava flow, Lunar Crater volcanic field, Nevada, imply an emplacement age of similar to 38 +/- 10 ka. Cl-36 data for the 600 ka flow north of the Lunar Crater maar are consistent with (1) an apparent erosion rate of similar to 3 m/m.y., (2) a model of desert pavement formation in which basalt clasts eroded from the flow remain on the surface of the eolian derived sediments that mantle the flow, and (3) the early formation of the eolian-derived sediment mantle. C1 WASHINGTON UNIV,DEPT EARTH & PLANETARY SCI,ST LOUIS,MO 63130. LAWRENCE LIVERMORE NATL LAB,CTR ACCELERATOR MASS SPECTROMETRY,LIVERMORE,CA 94550. RP SHEPARD, MK (reprint author), SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,CTR EARTH & PLANETARY STUDIES,MRC 315,WASHINGTON,DC 20560, USA. RI Caffee, Marc/K-7025-2015 OI Caffee, Marc/0000-0002-6846-8967 NR 18 TC 27 Z9 27 U1 0 U2 2 PU GEOLOGICAL SOC AMERICA PI BOULDER PA PO BOX 9140 3300 PENROSE PLACE, BOULDER, CO 80301 SN 0091-7613 J9 GEOLOGY JI Geology PD JAN PY 1995 VL 23 IS 1 BP 21 EP 24 DI 10.1130/0091-7613(1995)023<0021:CEAOBF>2.3.CO;2 PG 4 WC Geology SC Geology GA QB282 UT WOS:A1995QB28200005 ER PT J AU MITROVICA, JX DAVIS, JL AF MITROVICA, JX DAVIS, JL TI SOME COMMENTS ON THE 3-D IMPULSE-RESPONSE OF A MAXWELL VISCOELASTIC EARTH SO GEOPHYSICAL JOURNAL INTERNATIONAL LA English DT Note DE 3-D RESPONSE; NORMAL MODES; VISCOELASTICITY ID GLACIAL-ISOSTATIC ADJUSTMENT; MANTLE; RHEOLOGY; RELAXATION; SURFACE; GRAVITY; MODEL AB We consider the 3-D normal mode response of a Maxwell viscoelastic earth model. We find that the partitioning of modal strengths, amongst the various modal branches, is significantly different for the case of the l Love number, which governs tangential deformations, than it is for the h and k Love number, which are associated, respectively, with radial deformations and gravitational potential perturbations. The partitioning and the differences are a strong function of the spherical harmonic degree. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP MITROVICA, JX (reprint author), UNIV TORONTO,DEPT PHYS,60 ST GEORGE ST,TORONTO,ON M5S 1A7,CANADA. RI Davis, James/D-8766-2013 OI Davis, James/0000-0003-3057-477X NR 30 TC 14 Z9 14 U1 1 U2 2 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0956-540X J9 GEOPHYS J INT JI Geophys. J. Int. PD JAN PY 1995 VL 120 IS 1 BP 227 EP 234 DI 10.1111/j.1365-246X.1995.tb05922.x PG 8 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA QA254 UT WOS:A1995QA25400016 ER PT B AU KORZENNIK, SG RHODES, EJ JOHNSON, NM ROSE, P CACIANNI, A AF KORZENNIK, SG RHODES, EJ JOHNSON, NM ROSE, P CACIANNI, A BE Ulrich, RK Rhodes, EJ Dappen, W TI On the determination of the solar internal rotation SO GONG '94: HELIO- AND ASTERO-SEISMOLOGY FROM THE EARTH AND SPACE SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 2nd GONG Science Conference - Helio-Seismology and Astero-Seismology from the Earth and Space CY MAY 16-20, 1994 CL UNIV SO CALIF, DAVIDSON CONF CTR, LOS ANGELES, CA SP Global Oscillat Network Grp HO UNIV SO CALIF, DAVIDSON CONF CTR C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-95-3 J9 ASTR SOC P PY 1995 VL 76 BP 12 EP 23 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD96T UT WOS:A1995BD96T00002 ER PT B AU KORZENNIK, SG NOYES, RW ZISKIN, V AF KORZENNIK, SG NOYES, RW ZISKIN, V BE Ulrich, RK Rhodes, EJ Dappen, W TI Local helioseismology: Analysis of localized time-distance diagrams from quiet and active regions SO GONG '94: HELIO- AND ASTERO-SEISMOLOGY FROM THE EARTH AND SPACE SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 2nd GONG Science Conference - Helio-Seismology and Astero-Seismology from the Earth and Space CY MAY 16-20, 1994 CL UNIV SO CALIF, DAVIDSON CONF CTR, LOS ANGELES, CA SP Global Oscillat Network Grp HO UNIV SO CALIF, DAVIDSON CONF CTR C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-95-3 J9 ASTR SOC P PY 1995 VL 76 BP 268 EP 271 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD96T UT WOS:A1995BD96T00050 ER PT B AU Edson, M AF Edson, M BE Bearman, D TI Another tool in the toolbox - Prototyping a visitor orientation program for the Freer Gallery of Art. SO HANDS ON HYPERMEDIA AND INTERACTIVITY IN MUSEUMS LA English DT Proceedings Paper CT 3rd International Conference on Hypermedia and Interactivity in Museums (ICHIM 95/MCN 95) CY OCT 09-13, 1995 CL SAN DIEGO, CA C1 Smithsonian Inst, Arthur M Sackler Gallery & Freer Gallery Art, Emerging Technol, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ARCHIVES & MUSEUM INFORMATICS PI PITTSBURGH PA 2008 MURRAY AVE, STE D, PITTSBURGH, PA 15217 USA BN 1-885626-12-6 PY 1995 BP 60 EP 69 PG 10 WC Art; Information Science & Library Science SC Art; Information Science & Library Science GA BQ36R UT WOS:000088143200009 ER PT S AU DEVORKIN, DH AF DEVORKIN, DH BE Appenzeller, I TI The International Union for Cooperation in Solar Research: Prelude to the IAU SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 SMITHSONIAN INST,WASHINGTON,DC 20560. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 117 EP 118 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00012 ER PT S AU WELTHER, BL AF WELTHER, BL BE Appenzeller, I TI The first women appointed to IAU commissions SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 SMITHSONIAN ASTROPHYS OBSER,CAMBRIDGE,MA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 124 EP 126 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00018 ER PT S AU MATHEWS, PM DEHANT, V AF MATHEWS, PM DEHANT, V BE Appenzeller, I TI Current status of geophysical models of nutation SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 4 Z9 4 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 243 EP 246 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00073 ER PT S AU KURUCZ, RL AF KURUCZ, RL BE Appenzeller, I TI Synthetic template spectra SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 7 Z9 7 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 407 EP 410 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00113 ER PT S AU GREENHILL, LJ JIANG, DR MORAN, JM REID, MJ LO, KY CLAUSSEN, MJ HENKEL, C WILSON, TL BECKER, R WOUTERLOOT, JGA AF GREENHILL, LJ JIANG, DR MORAN, JM REID, MJ LO, KY CLAUSSEN, MJ HENKEL, C WILSON, TL BECKER, R WOUTERLOOT, JGA BE Appenzeller, I TI A supermassive object in the nucleus of NGC 4258? SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 531 EP 534 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00151 ER PT S AU GUSTAFSSON, B AF GUSTAFSSON, B BE Appenzeller, I TI Opacity incompleteness and atmospheres of cool stars SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 579 EP 579 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00165 ER PT S AU KURUCZ, RL AF KURUCZ, RL BE Appenzeller, I TI The Kurucz (Smithsonian) atomic and molecular database SO HIGHLIGHTS OF ASTRONOMY SE IAU SYMPOSIA LA English DT Proceedings Paper CT XXIInd IAU General Assembly - Highlights of Astronomy CY AUG, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3553-8 J9 IAU SYMP PY 1995 VL 10 BP 579 EP 579 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD95U UT WOS:A1995BD95U00164 ER PT J AU REINGOLD, N AF REINGOLD, N TI CHOOSING THE FUTURE - THE US RESEARCH COMMUNITY, 1944-1946 SO HISTORICAL STUDIES IN THE PHYSICAL AND BIOLOGICAL SCIENCES LA English DT Article RP REINGOLD, N (reprint author), SMITHSONIAN INST,NATL MUSEUM AMER HIST,WASHINGTON,DC 20560, USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU UNIV CALIF PRESS PI BERKELEY PA JOURNALS DEPT 2120 BERKELEY WAY, BERKELEY, CA 94720 SN 0890-9997 J9 HIST STUD PHYS BIOL JI Hist. Stud. Phys. Biol. Sci. PY 1995 VL 25 BP 301 EP 328 PN 2 PG 28 WC History & Philosophy Of Science SC History & Philosophy of Science GA RF168 UT WOS:A1995RF16800004 ER PT B AU Gorenstein, P Joensen, K AF Gorenstein, P Joensen, K BE Bassani, L diCocco, G TI Focussing in the hard x-ray hand SO IMAGING IN HIGH ENERGY ASTRONOMY LA English DT Proceedings Paper CT International Workshop on Imaging in High Energy Astronomy CY SEP 26-30, 1994 CL ANACAPRI, ITALY SP CNR, Leben, CREASO DE focussing; hard x-rays; multilayer C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3788-3 PY 1995 BP 109 EP 117 PG 9 WC Astronomy & Astrophysics; Remote Sensing SC Astronomy & Astrophysics; Remote Sensing GA BF13P UT WOS:A1995BF13P00014 ER PT B AU Grindlay, JE Barret, D Lum, KSK Manandhar, RP Robbason, B Vance, S AF Grindlay, JE Barret, D Lum, KSK Manandhar, RP Robbason, B Vance, S BE Bassani, L diCocco, G TI New wavelet methods for flatfielding coded aperture images SO IMAGING IN HIGH ENERGY ASTRONOMY LA English DT Proceedings Paper CT International Workshop on Imaging in High Energy Astronomy CY SEP 26-30, 1994 CL ANACAPRI, ITALY SP CNR, Leben, CREASO C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 2 Z9 2 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3788-3 PY 1995 BP 213 EP 220 PG 8 WC Astronomy & Astrophysics; Remote Sensing SC Astronomy & Astrophysics; Remote Sensing GA BF13P UT WOS:A1995BF13P00031 ER PT B AU EIKENBERRY, SS FAZIO, GG RANSOM, SM AF EIKENBERRY, SS FAZIO, GG RANSOM, SM BE Fowler, AM TI An SSPM-based high-speed infrared photometer for astronomy SO INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detectors and Instrumentation for Astronomy CY APR 18-21, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1828-5 J9 P SOC PHOTO-OPT INS PY 1995 VL 2475 BP 210 EP 220 DI 10.1117/12.211258 PG 11 WC Instruments & Instrumentation; Remote Sensing; Optics SC Instruments & Instrumentation; Remote Sensing; Optics GA BD42D UT WOS:A1995BD42D00023 ER PT B AU FAZIO, GG MOSELEY, SH AF FAZIO, GG MOSELEY, SH BE Fowler, AM TI Infrared Array Camera (IRAC) design for the infrared imaging surveyor (IRIS) SO INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detectors and Instrumentation for Astronomy CY APR 18-21, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE INFRARED ASTRONOMY; CRYOGENIC OPTICS; SPACE TELESCOPE; INFRARED ARRAYS; SPACE ASTRONOMY C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1828-5 J9 P SOC PHOTO-OPT INS PY 1995 VL 2475 BP 464 EP 473 DI 10.1117/12.211286 PG 10 WC Instruments & Instrumentation; Remote Sensing; Optics SC Instruments & Instrumentation; Remote Sensing; Optics GA BD42D UT WOS:A1995BD42D00049 ER PT S AU Field, GB AF Field, GB BE Sakanaka, PH Tendler, M TI Origin of astrophysical magnetic fields SO INTERNATIONAL CONFERENCE ON PLASMA PHYSICS - ICPP 1994 SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT International Conference on Plasma Physics CY OCT 31-NOV 04, 1994 CL FOZ DO IGUACU, BRAZIL SP Natl Inst Space Res, State Univ Campinas, Brazilian Vacuum Soc, Int Union Pure & Appl Phys C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-496-1 J9 AIP CONF PROC PY 1995 VL 345 BP 416 EP 426 PG 3 WC Physics, Fluids & Plasmas SC Physics GA BE32J UT WOS:A1995BE32J00052 ER PT J AU SINGLETON, TA AF SINGLETON, TA TI AN ARCHAEOLOGICAL PERSPECTIVE ON AFRICAN-AMERICAN ARTISTIC PRODUCTION SO INTERNATIONAL REVIEW OF AFRICAN AMERICAN ART LA English DT Article RP SINGLETON, TA (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 15 TC 1 Z9 1 U1 1 U2 1 PU MUSEUM AFR AMER ART PI LOS ANGELES PA 4005 CRENSHAW BLVD, LOS ANGELES, CA 90008-2534 SN 0145-8116 J9 INT REV AFR AM ART JI Int. Rev. Afr. Am. Art PY 1995 VL 12 IS 3 BP 24 EP 29 PG 6 WC Art SC Art GA TA679 UT WOS:A1995TA67900004 ER PT J AU NELSON, ML GOTTLICH, GL BIANCO, DJ PAULSON, SS BINKLEY, RL KELLOGG, YD BEAUMONT, CJ SCHMUNK, RB KURTZ, MJ ACCOMAZZI, A SYED, O AF NELSON, ML GOTTLICH, GL BIANCO, DJ PAULSON, SS BINKLEY, RL KELLOGG, YD BEAUMONT, CJ SCHMUNK, RB KURTZ, MJ ACCOMAZZI, A SYED, O TI THE NASA TECHNICAL REPORT SERVER SO INTERNET RESEARCH-ELECTRONIC NETWORKING APPLICATIONS AND POLICY LA English DT Article DE AEROSPACE INDUSTRY; ELECTRONIC PUBLISHING; INFORMATION SERVICES; INTERNET AB The National Aeronautics and Space Act of 1958 established the National Aeronautics and Space Administration (NASA) and charged it to ''provide for the widest practicable and appropriate dissemination of information concerning.;.:its activities and the results thereof''. The search for innovative methods to distribute NASA's information led a grass-roots team to create the NASA Technical Report Server (NTRS), which uses the World Wide Web and other popular Internet-based information systems. C1 NASA,DRYDEN FLIGHT RES CTR,EDWARDS AFB,CA. NASA,GODDARD INST SPACE STUDIES,NATL RES COUNCIL,NEW YORK,NY. SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA. NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP NELSON, ML (reprint author), NASA,LANGLEY RES CTR,COMP SCI CORP,HAMPTON,VA 23665, USA. RI KURTZ, Michael /B-3890-2009; OI Kurtz, Michael/0000-0002-6949-0090; Accomazzi, Alberto/0000-0002-4110-3511; Nelson, Michael/0000-0003-3749-8116 NR 18 TC 9 Z9 9 U1 0 U2 2 PU MCB UNIV PRESS LTD PI BRADFORD PA 60/62 TOLLER LANE, BRADFORD, W YORKSHIRE, ENGLAND BD8 9BY SN 1066-2243 J9 INTERNET RES JI Internet Res.-Electron. Netw. Appl. Policy PY 1995 VL 5 IS 2 BP 25 EP & DI 10.1108/10662249510094768 PG 0 WC Business; Computer Science, Information Systems; Telecommunications SC Business & Economics; Computer Science; Telecommunications GA TB823 UT WOS:A1995TB82300003 ER PT J AU RUPPERT, EE RICE, ME AF RUPPERT, EE RICE, ME TI FUNCTIONAL-ORGANIZATION OF DERMAL CELOMIC CANALS IN SIPUNCULUS-NUDUS (SIPUNCULA) WITH A DISCUSSION OF RESPIRATORY DESIGNS IN SIPUNCULANS SO INVERTEBRATE BIOLOGY LA English DT Article DE RESPIRATION; TENTACLES; INTROVERT; INTEGUMENT AB Sipunculus nudus is a large sipunculan that burrows actively in porous marine sands. The body surface is folded into approximately 30 longitudinal ridges that extend along the length of the trunk and introvert. A dermal canal lies beneath each of the ridges and circulates coelomic fluid and hemerythrocytes to within a few micrometers of the body surface. Coelomic fluid enters and leaves the dermal canals through pores leading from the trunk coelom and hows unidirectionally at approximately 0.7 mm/s from posterior to anterior. The flow is generated by cilia on peritoneal cells lining the canals. The volume of the canals is approximately 8% of the total coelomic volume. We suggest that sipunculan species fall into three functional categories based on the body region or regions used for environmental gas exchange. ''Tentacle breathers,'' such as species of Themiste, bore into rocks or micro-oxic sediments and extend their numerous tentacles into the water, Dissolved,eases are transported between the tentacular and trunk coelomic cavities via well-developed contractile vessels. ''Tentacle and introvert breathers,'' such as species of Aspidosiphonidae and Phascolosomatidae, lodge the trunk region of the body in the substratum and extend an elongated, thin-walled introvert and tentacles into the water. Their contractile vessels are usually simple unbranched tubes. ''Integumentary breathers,'' such as Sipunculus nudus and other species of Sipunculidae, have integumentary specializations for gas exchange across the entire body surface, but usually small tentacles and often weakly developed contractile vessels. C1 SMITHSONIAN MARINE STN LINK PORT,FT PIERCE,FL 34946. RP RUPPERT, EE (reprint author), CLEMSON UNIV,DEPT BIOL SCI,CLEMSON,SC 29634, USA. NR 27 TC 10 Z9 16 U1 0 U2 4 PU AMER MICROSCOPICAL SOC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044-8897 SN 1077-8306 J9 INVERTEBR BIOL JI Invertebr. Biol. PY 1995 VL 114 IS 1 BP 51 EP 63 DI 10.2307/3226953 PG 13 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA QW610 UT WOS:A1995QW61000008 ER PT J AU STORCH, V HIGGINS, RP ANDERSON, P SVAVARSSON, J AF STORCH, V HIGGINS, RP ANDERSON, P SVAVARSSON, J TI SCANNING AND TRANSMISSION ELECTRON-MICROSCOPIC ANALYSIS OF THE INTROVERT OF PRIAPULOPSIS-AUSTRALIS AND PRIAPULOPSIS-BICAUDATUS (PRIAPULIDA) SO INVERTEBRATE BIOLOGY LA English DT Article DE ULTRASTRUCTURE; SENSORY RECEPTORS ID HALICRYPTUS-SPINULOSUS PRIAPULIDA; ULTRASTRUCTURE; LARVA AB The introvert of Priapulopsis australis and P. bicaudatus was investigated by scanning and transmission electron microscopy. The scalids, clustered normally in groups of 5 and arranged in 25 longitudinal rows, differ slightly between the two species. All scalids are sensilla containing three kinds of bipolar sensory cells with apical cilia. The cilia of one cell type reach the surface through cuticular tubules. The cilia of the other two receptor cell types are surrounded by 7 stereovilli and lie entirely beneath the cuticle. What previously was considered to be the first ring of pharyngeal teeth in P. australis may be seen by scanning electron microscopy to be a series of 10 conical sensilla. This condition may be derived by reduction from 5 pairs of teeth as found in P. bicaudatus. In turn, each pair of first-ring pharyngeal teeth in P. bicaudatus may have arisen by reduction of the median cusp of each of the 5 teeth in an ancestor, leaving two halves. C1 SMITHSONIAN INST,MUSEUM NATL HIST NAT,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560. NATL INST WATER & ATMOSPHER RES MARINE,WELLINGTON,NEW ZEALAND. UNIV ICELAND,INST BIOL,IS-108 REYKJAVIK,ICELAND. RP STORCH, V (reprint author), UNIV HEIDELBERG,DEPT ZOOL,D-69120 HEIDELBERG,GERMANY. NR 18 TC 9 Z9 9 U1 0 U2 2 PU AMER MICROSCOPICAL SOC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044-8897 SN 1077-8306 J9 INVERTEBR BIOL JI Invertebr. Biol. PY 1995 VL 114 IS 1 BP 64 EP 72 DI 10.2307/3226954 PG 9 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA QW610 UT WOS:A1995QW61000009 ER PT J AU THOMAS, MB EDWARDS, NC HIGGINS, RP AF THOMAS, MB EDWARDS, NC HIGGINS, RP TI CRYPTOHYDRA THIELI N-GEN, N-SP - A MEIOFAUNAL MARINE HYDROID (HYDROIDA, ATHECATA, CAPITATA) SO INVERTEBRATE BIOLOGY LA English DT Article DE CNIDARIA; HYDROZOA; ACAULIDAE; ULTRASTRUCTURE ID CNIDARIA AB Meiofaunal hydroids of an undescribed species were found in coarse shell-hash at two sites along the Atlantic coast near Fort Pierce, Florida, USA, between November 1991 and October 1999. Specimens were examined by light microscopy and by scanning and transmission electron microscopy; the behavior was observed and videorecorded. The motile hydroid, up to 1 mm in length, has an extremely long hypostome separating short capitate oral tentacles from longer aboral tentacles, all used in locomotion. A basal disc, similar to that of some actinulae, is used for more permanent attachment. Based on the cnidome (stenoteles, desmonemes, and microbasic mastigophores of two sizes), location and type of tentacles, organization of the endoderm of the tentacle, presence of a supporting lamella, structure of the basal disc, and mode of asexual reproduction, the species is assigned to the family Acaulidae (Athecata, Capitata). Differences from other members of the family, which are all sessile, are considered adaptations to a motile existence, but significant enough to warrant the establishment of a new genus and species, Cryptohydra thieli. C1 NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560. RP THOMAS, MB (reprint author), UNIV N CAROLINA,DEPT BIOL,CHARLOTTE,NC 28223, USA. NR 25 TC 7 Z9 7 U1 0 U2 0 PU AMER MICROSCOPICAL SOC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044-8897 SN 1077-8306 J9 INVERTEBR BIOL JI Invertebr. Biol. PY 1995 VL 114 IS 2 BP 107 EP 118 DI 10.2307/3226883 PG 12 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA RA652 UT WOS:A1995RA65200001 ER PT J AU HOPE, WD ZHANG, ZN AF HOPE, WD ZHANG, ZN TI NEW NEMATODES FROM THE YELLOW SEA, HOPPERIA-HEXADENTATA N-SP AND CERVONEMA-DELTENSIS N-SP (CHROMADORIDA, COMESOMATIDAE), WITH OBSERVATIONS ON MORPHOLOGY AND SYSTEMATICS SO INVERTEBRATE BIOLOGY LA English DT Article DE AMPHIDS; PUNCTATIONS; KEYS; SPERM DIMORPHISM; MINOLAIMUS ID GEN AB In considering the evolutionary relationship of Comesomatidae with Monhysterida versus Chromadorida, we adopt the hypothesis that Comesomatidae has its closest evolutionary affinity with members of Chromadorida. We conclude that mushroom-shaped and rod-like intracuticular punctations are character states of the same structure, and that the punctations in members of Comesomatidae are homologous with those in members of Achromadoridae, Cyatholaimidae, Ethmolaimidae, and Selachinematidae. We compare and contrast the appearance of multispiral amphids as seen with LM and SEM. In describing two new species of Comesomatidae, Hopperia hexadentata n. sp. and Cervonema deltensis n. sp., we document the presence of punctations for Cervonema deltensis n. sp. and discuss evidence for their occurrence among other members of the genus. We provide diagnoses for Comesomatidae, Dorylaimopsinae, Sabatieriinae, Hopperia, and Cervonema, and keys to the species of Hopperia and Cervonema, and we transfer Minolaimus from Cyatholaimidae to Sabatieriinae (Comesomatidae). We present evidence for sperm dimorphism in Cervonema deltensis n. sp. and review its occurrence among other marine nematodes. C1 OCEAN UNIV QINGDAO,DEPT MARINE BIOL,QINGDAO,PEOPLES R CHINA. RP HOPE, WD (reprint author), NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560, USA. NR 28 TC 30 Z9 36 U1 0 U2 2 PU AMER MICROSCOPICAL SOC PI LAWRENCE PA 810 EAST 10TH ST, LAWRENCE, KS 66044-8897 SN 1077-8306 J9 INVERTEBR BIOL JI Invertebr. Biol. PY 1995 VL 114 IS 2 BP 119 EP 138 DI 10.2307/3226884 PG 20 WC Marine & Freshwater Biology; Zoology SC Marine & Freshwater Biology; Zoology GA RA652 UT WOS:A1995RA65200002 ER PT B AU LOWERBAUGH, T AF LOWERBAUGH, T GP SOC IMAGING SCI & TECHNOL TI Towards a virtual Smithsonian SO IS&T'S 48TH ANNUAL CONFERENCE - IMAGING ON THE INFORMATION SUPERHIGHWAY, FINAL PROGRAM AND PROCEEDINGS LA English DT Proceedings Paper CT IS&Ts 48th Annual Conference on Imaging on the Information Superhighway CY MAY 07-11, 1995 CL WASHINGTON, DC SP Soc Imaging Sci & Technol C1 SMITHSONIAN INST,WASHINGTON,DC 20560. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC IMAGING SCIENCE & TECHNOLOGY PI SPRINGFIELD PA 7003 KILWORTH LANE, SPRINGFIELD, VA 22151 BN 0-89208-184-8 PY 1995 BP 68 EP 70 PG 3 WC Imaging Science & Photographic Technology SC Imaging Science & Photographic Technology GA BD74Y UT WOS:A1995BD74Y00016 ER PT S AU Prussin, L AF Prussin, L BE Adahl, K Sahlstrom, B TI Architectural facets of Islam in the Futa-Djallon SO ISLAMIC ART AND CULTURE IN SUB-SAHARAN AFRICA SE ACTA UNIVERSITATIS UPSALIENSIS : FIGURA, NOVA SERIES LA English DT Proceedings Paper CT International Conference on Islamic Art and Culture in Sub-Saharan Africa CY DEC, 1992 CL UPPSALA UNIV, UPPSALA, SWEDEN SP Uppsala Univ, Dept Art Hist, Swedish Council Res Humanities & Social Sci, Helge Axelsson Jonsson Fdn HO UPPSALA UNIV C1 SMITHSONIAN INST,NATL MUSEUM AFRICAN ART,WASHINGTON,DC 20560. NR 0 TC 1 Z9 1 U1 2 U2 2 PU ALMQVIST & WIKSELL INT PI STOCKHOLM PA GAMLA BROGATAN 26 BOX 638, 101 2830 STOCKHOLM, SWEDEN SN 0071-481X BN 91-554-3576-9 J9 ACT U UPS F PY 1995 VL 27 BP 21 EP 56 PG 36 WC Archaeology; Architecture; Art; History SC Archaeology; Architecture; Art; History GA BF83P UT WOS:A1995BF83P00002 ER PT J AU EBERHARD, WG AF EBERHARD, WG TI THE WEB AND BUILDING BEHAVIOR OF SYNOTAXUS-ECUADORENSIS (ARANEAE, SYNOTAXIDAE) SO JOURNAL OF ARACHNOLOGY LA English DT Article AB Webs and building behavior of Synotaxus ecuadorensis are highly ordered and complex. Their webs differ from those of other Synotaxus species, but there are several apparent homologies in building behavior. The overall construction sequence differs from that of many other spiders in not being organized around a central portion or retreat. Instead, lines are added to one leading edge in a crochet-like fashion. Comparison with other Synotaxus species suggests how building behavior is organized within the spider. RP EBERHARD, WG (reprint author), UNIV COSTA RICA,SMITHSONIAN TROP RES INST,CIUDAD UNIV,SAN JOSE,COSTA RICA. NR 0 TC 11 Z9 11 U1 0 U2 0 PU AMER ARACHNOLOGICAL SOC PI NEW YORK PA C/O NORMAN I PLATNICK, AMER MUSEUM NATURAL HISTORY, CENTRAL PK WEST AT 79TH ST, NEW YORK, NY 10024 SN 0161-8202 J9 J ARACHNOL JI J. Arachnol. PY 1995 VL 23 IS 1 BP 25 EP 30 PG 6 WC Entomology SC Entomology GA RP741 UT WOS:A1995RP74100005 ER PT J AU KUNZ, TH OFTEDAL, OT ROBSON, SK KRETZMANN, MB KIRK, C AF KUNZ, TH OFTEDAL, OT ROBSON, SK KRETZMANN, MB KIRK, C TI CHANGES IN MILK-COMPOSITION DURING LACTATION IN 3 SPECIES OF INSECTIVOROUS BATS SO JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMIC AND ENVIRONMENTAL PHYSIOLOGY LA English DT Article DE MILK COMPOSITION; LACTATION; BATS; FREE-RANGING BATS; MICROCHIROPTERA ID MYOTIS-LUCIFUGUS; PREGNANCY; GROWTH; BEARS; SEALS; FOOD AB Changes in milk composition are described for three species of free-ranging insectivorous bats (Myotis lucifugus, M. velifer, and Tadarida brasiliensis) from early to mid (peak) lactation. Dry matter and energy concentrations in milk increased from early to mid-lactation. In M. lucifugus and T. brasiliensis, but not M. velifer, these increases were due largely to a rise in fat concentration, since protein and carbohydrate remained relatively constant. Energy content of milk (kJ.g(-1)) for each species from early through mid-lactation was related to dry matter (DM) as follows: M. lucifugus (y=0.31 DM-0.32, r(2)=0.68), M. velifer (y=0.48 DM-5.08, r(2)=0.99), and T. brasiliensis (y=0.37 DM-1.51, r(2)=0.61). Comparison of the effect of sampling method on milk composition of T. brasiliensis indicated that fat, dry matter, and energy concentrations increased significantly from pre-dawn to pre-noon samples. Relatively high fat and low water levels in T. brasiliensis milk may reflect the limited access that lactating females have to free water, as well as need to minimize mass of stored milk during long foraging trips. Conversely, lower fat concentrations and higher water levels in milk in M. lucifugus and M. velifer may relate to the propensity for colonies of these two species to roost and forage near bodies of water. In addition, differences in milk fat concentrations observed among the three species may correlate to daily suckling schedules. Females of T. brasiliensis, for example, roost apart from and suckle their young on a regular daily schedule, whereas both species of Myotis roost with their pups and appear to suckle them on demand. C1 SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES,WASHINGTON,DC 20008. UNIV CALIF SANTA CRUZ,DEPT BIOL,SANTA CRUZ,CA 95064. RP KUNZ, TH (reprint author), BOSTON UNIV,DEPT BIOL,5 CUMMINGTON ST,BOSTON,MA 02215, USA. RI Robson, Simon/D-1168-2011 OI Robson, Simon/0000-0001-8870-1933 NR 63 TC 37 Z9 41 U1 1 U2 7 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0174-1578 J9 J COMP PHYSIOL B JI J. Comp. Physiol. B-Biochem. Syst. Environ. Physiol. PD JAN PY 1995 VL 164 IS 7 BP 543 EP 551 PG 9 WC Physiology; Zoology SC Physiology; Zoology GA QD207 UT WOS:A1995QD20700006 PM 7884065 ER PT J AU TYREE, MT PATINO, S BENNINK, J ALEXANDER, J AF TYREE, MT PATINO, S BENNINK, J ALEXANDER, J TI DYNAMIC MEASUREMENTS OF ROOT HYDRAULIC CONDUCTANCE USING A HIGH-PRESSURE FLOWMETER IN THE LABORATORY AND FIELD SO JOURNAL OF EXPERIMENTAL BOTANY LA English DT Article DE HIGH-PRESSURE FLOWMETER; ROOT AND SHOOT HYDRAULIC CONDUCTANCE; FICUS MACLELLANDI; CECROPIA OBTUSIFOLIA; PALICOUREA GUIANENSIS ID WATER TRANSPORT; LIFT AB A new high-pressure flowmeter (HPFM) is described which is capable of rapid water-Row measurements. The HPFM permits dynamic determination of hydraulic conductance of roots, K-r, and can be used in the laboratory or field. The base of a root is connected to the HPFM and water is perfused into the root system opposite to the normal direction of flow during transpiration. The perfusion pressure is changed at a constant rate of 3-7 kPa s-(1) while measuring the flow into the root every 2-4 s. The slope of the plot of Row versus applied pressure is K-r. This paper describes the HPFM, presents the theory of dynamic flow measurements, discusses sources of error, presents evidence that dynamic measurements of K-r in Ficus maclellandi (and six other tropical species from Panama) yield the correct result, and demonstrates the use of the method under field conditions in Panama on Cecropia obtusifolia and Palicourea guianensis. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RP TYREE, MT (reprint author), AIKEN FORESTRY SCI LAB,POB 968,BURLINGTON,VT 05402, USA. NR 16 TC 209 Z9 218 U1 3 U2 35 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0022-0957 J9 J EXP BOT JI J. Exp. Bot. PD JAN PY 1995 VL 46 IS 282 BP 83 EP 94 DI 10.1093/jxb/46.1.83 PG 12 WC Plant Sciences SC Plant Sciences GA QG991 UT WOS:A1995QG99100008 ER PT J AU ALPERT, YL AF ALPERT, YL TI LONGITUDINAL ELF TO LF ELECTROMAGNETIC OSCILLATIONS AND WAVES GENERATED IN THE IONOSPHERE UNDER THE INFLUENCE OF STRONG HIGH-FREQUENCY ELECTRIC-FIELD SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article AB Results of detailed numerical calculations of some parametric decay effects, arising in a magnetoplasma under the influence of a HF, sufficiently strong electric field ($) over right arrow E = ($) over right arrow E(p). cos omega(E)t, are given in this paper. The resonance branches and the VLF parametric resonances are calculated in the ionosphere at altitudes Z = 200, 300, and 400 km. Calculations in the resonance regions omega(E) = s omega 0 (omega 0 is the electron Langmuir frequency, s= 1,2,...) were done in the cold palsma and also in the kinetic approximations. It is shown that the angle dependence omega(1)(Theta(1) E(p) not equal 0) of the ELF (0 < omega less than or equal to Omega(B)) resonance branch is close to the cosine law. This is in contrast with the earlier published results and with the angle dependence omega(1)(Theta, E = 0). This important effect and the other dependencies given in the paper may be used for the search of the parametric instabilities and of the electric field in the ionosphere and magnetosphere, especially by experiments in situ on satellites. RP ALPERT, YL (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 9 TC 0 Z9 1 U1 0 U2 0 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 JAN 1 PY 1995 VL 100 IS A1 BP 289 EP 304 DI 10.1029/94JA01616 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QF783 UT WOS:A1995QF78300025 ER PT J AU VILLALBA, A PETERS, EC LOPEZ, MC CARABALLAL, MJ AF VILLALBA, A PETERS, EC LOPEZ, MC CARABALLAL, MJ TI DISSEMINATED SARCOMA IN THE CLAM RUDITAPES DECUSSATUS IN GALICIA (NW SPAIN) SO JOURNAL OF INVERTEBRATE PATHOLOGY LA English DT Note DE RUDITAPES DECUSSATUS; DISSEMINATED SARCOMA; NEOPLASIA; MARINE BIVALVE C1 TETRA TECH INC,FAIRFAX,VA 22030. SMITHSONIAN INST,NATL MUSEUM NAT HIST,REGISTRY TUMORS LOWER ANIM,WASHINGTON,DC 20560. RP VILLALBA, A (reprint author), CONSELLERIA PESCA MARISQUEO & AGR,CTR INVEST MARINAS,E-36600 VILAGARCIA AROUSA,SPAIN. RI Villalba, Antonio /E-3621-2013 OI Villalba, Antonio /0000-0001-8049-0502 NR 4 TC 10 Z9 10 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0022-2011 J9 J INVERTEBR PATHOL JI J. Invertebr. Pathol. PD JAN PY 1995 VL 65 IS 1 BP 76 EP 78 DI 10.1006/jipa.1995.1012 PG 3 WC Zoology SC Zoology GA QF228 UT WOS:A1995QF22800012 ER PT J AU NICHOLS, DK DIAS, JLC AF NICHOLS, DK DIAS, JLC TI MELANOTIC EPENDYMOMA IN A GOELDIS MARMOSET (CALLIMICO-GOELDII) SO JOURNAL OF MEDICAL PRIMATOLOGY LA English DT Note DE NEOPLASIA; CENTRAL NERVOUS SYSTEM; NONHUMAN PRIMATE AB A spontaneous melanotic ependymoma was observed in the brain of an adult female Goeldi's marmoset (Callimico goeldii). The mass completely occupied the left lateral ventricle, rupturing the fornix and corpus callosum, and compressing the adjacent neuropil. Special histochemical techniques, including melanin bleach, periodic acid-Schiff, Perls iron and phosphotungstic acid hematoxylin, demonstrated the neoplasms to be an ependymoma with a rare melanotic differentiation. C1 SMITHSONIAN INST,NATL ZOOL PK,DEPT PATHOL,WASHINGTON,DC 20008. UNIV SAO PAULO,FAC MED VET & ZOOTECNIA,DEPT PATOL,SAO PAULO,BRAZIL. RI Catao-Dias, Jose Luiz/C-4897-2012 OI Catao-Dias, Jose Luiz/0000-0003-2999-3395 NR 5 TC 2 Z9 3 U1 0 U2 2 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0047-2565 J9 J MED PRIMATOL JI J. Med. Primatol. PD JAN PY 1995 VL 24 IS 1 BP 49 EP 51 PG 3 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA RF601 UT WOS:A1995RF60100008 PM 7563011 ER PT J AU GOOD, EM AF GOOD, EM TI CABINETS AND OTHER PIANOS + RESPONSE TO MOBBS,KENNETH ON THE LACK OF CONSISTENCY IN PIANO TERMINOLOGY SO JOURNAL OF THE AMERICAN MUSICAL INSTRUMENT SOCIETY LA English DT Note RP GOOD, EM (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU AMER MUSIC INSTRUMENT SOC PI HEMPSTEAD PA MUSIC DEPT, EMILY LOWE HALL 112 HOFSTRA UNIVERSITY, HEMPSTEAD, NY 11362 SN 0362-3300 J9 J AM MUSIC INSTRUM S JI J. Am. Music. Instrum. Soc. PY 1995 VL 21 BP 86 EP 89 PG 4 WC Music SC Music GA RT193 UT WOS:A1995RT19300004 ER PT J AU Behrensmeyer, AK Todd, NE McBrinn, G Damuth, JD AF Behrensmeyer, A. K. Todd, N. E. McBrinn, G. Damuth, J. D. TI EXPLORING TERRESTRIAL ECOSYSTEMS THROUGH TIME WITH THE ETE MULTIRELATIONAL DATABASE SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Behrensmeyer, A. K.; Todd, N. E.; McBrinn, G.; Damuth, J. D.] Smithsonian Inst, Evolut Terr Ecosyst Program, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 18A EP 18A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500020 ER PT J AU Elzanowski, A AF Elzanowski, Andrzej TI CRANIAL EVIDENCE FOR THE AVIAN RELATIONSHIPS OF OVIRAPTOROSAURIA SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Elzanowski, Andrzej] Smithsonian Inst, Natl Museum Nat Hist, MRC 116, Dept Vertebrate Zool, Washington, DC 20560 USA. NR 0 TC 3 Z9 3 U1 0 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 27A EP 27A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500080 ER PT J AU Emry, RJ Lucas, SG Bayshashov, BU AF Emry, R. J. Lucas, S. G. Bayshashov, B. U. TI MIDDLE EOCENE PERISSODACTYLA FROM THE SHINZHALY RIVER, EASTERN KAZAKHSTAN SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Emry, R. J.] Smithsonian Inst, Natl Mus Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. [Lucas, S. G.] New Mex Mus Nat Hist, Albuquerque, NM 87104 USA. [Bayshashov, B. U.] Acad Sci Repub Kazakhstan, Inst Zool, Alma Ata 480032, Kazakhstan. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 27A EP 27A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500079 ER PT J AU Emry, RJ Tjutkova, LA Wang, BY Lucas, SG AF Emry, R. J. Tjutkova, L. A. Wang, B-Y Lucas, S. G. TI THE ERGILIAN-SHANDGOLIAN (EOCENE-OLIGOCENE) TRANSITION IN THE ZAYSAN BASIN OF KAZAKHSTAN SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Emry, R. J.] Smithsonian Inst, Natl Mus Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. [Tjutkova, L. A.] NAS RK, Inst Zool, Alma Ata 480032, Kazakhstan. [Wang, B-Y] Acad Sinica, IVPP, Beijing, Peoples R China. [Lucas, S. G.] Mex Mus Nat Hist, Albuquerque, NM 87104 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 27A EP 27A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500078 ER PT J AU Lucas, SG Emry, RJ AF Lucas, S. G. Emry, R. J. TI OLIGOCENE SEQUENCE STRATIGRAPHY AND MAMMALIAN BIOCHRONOLOGY NORTH OF THE ARAL SEA, WESTERN KAZAKHSTAN SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Lucas, S. G.] New Mex Mus Nat Hist, Albuquerque, NM 87104 USA. [Emry, R. J.] Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 41A EP 41A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500174 ER PT J AU Lucas, SG Kordikova, EG Emry, RJ AF Lucas, S. G. Kordikova, E. G. Emry, R. J. TI UPPER CRETACEOUS-PALEOCENE STRATIGRAPHY AND VERTEBRATE PALEONTOLOGY IN THE ZAYSAN BASIN, KAZAKHSTAN SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Lucas, S. G.] New Mex Mus Nat Hist, Albuquerque, NM 87104 USA. [Kordikova, E. G.] Acad Sci Repub Kazakhstan, Inst Zool, Alma Ata, Kazakhstan. [Emry, R. J.] Smithsonian Inst, Natl Museum Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 41A EP 41A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500175 ER PT J AU Tjutkova, LA Emry, RJ Wang, BY Lucas, SG AF Tjutkova, L. A. Emry, R. J. Wang, B-Y Lucas, S. G. TI LAGOMORPHS AND RODENTS OF THE MIDDLE EOCENE SHINZHALY FAUNA, EASTERN KAZAKHSTAN SO JOURNAL OF VERTEBRATE PALEONTOLOGY LA English DT Meeting Abstract C1 [Tjutkova, L. A.] NAS RK, Inst Zool, Alma Ata 480032, Kazakhstan. [Emry, R. J.] Smithsonian Inst, Natl Mus Nat Hist, Dept Paleobiol, Washington, DC 20560 USA. [Wang, B-Y] Acad Sinica, IVPP, Beijing, Peoples R China. [Lucas, S. G.] New Mex Mus Nat Hist, Albuquerque, NM 87104 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 CHESTNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0272-4634 EI 1937-2809 J9 J VERTEBR PALEONTOL JI J. Vertebr. Paleontol. PY 1995 VL 15 SU 3 SI SI BP 56A EP 56A PG 1 WC Paleontology SC Paleontology GA V32OC UT WOS:000208959500281 ER PT B AU Kurucz, RL AF Kurucz, RL BE Sauval, AJ Blomme, R Grevesse, N TI The solar spectrum: Atlases and line identifications SO LABORATORY AND ASTRONOMICAL HIGH RESOLUTION SPECTRA SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Workshop on Laboratory and Astronomical High Resolution Spectra, in Honour of the 150th Birthday of Charles Vievez (1844-1890) the Pioneer of Astronomical Spectroscopy CY AUG 29-SEP 02, 1994 CL BRUSSELS, BELGIUM C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 50 Z9 50 U1 1 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-866733-01-5 J9 ASTR SOC P PY 1995 VL 81 BP 17 EP 31 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34C UT WOS:A1995BE34C00002 ER PT B AU Smith, PL Yoshino, K Stark, G Ito, K AF Smith, PL Yoshino, K Stark, G Ito, K BE Sauval, AJ Blomme, R Grevesse, N TI High resolution FUV photoabsorption cross sections for CO and N-2 at vacuum ultraviolet wavelengths SO LABORATORY AND ASTRONOMICAL HIGH RESOLUTION SPECTRA SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Workshop on Laboratory and Astronomical High Resolution Spectra, in Honour of the 150th Birthday of Charles Vievez (1844-1890) the Pioneer of Astronomical Spectroscopy CY AUG 29-SEP 02, 1994 CL BRUSSELS, BELGIUM C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-866733-01-5 J9 ASTR SOC P PY 1995 VL 81 BP 317 EP 318 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34C UT WOS:A1995BE34C00050 ER PT B AU Kurucz, RL AF Kurucz, RL BE Sauval, AJ Blomme, R Grevesse, N TI An atomic and molecular data bank for stellar spectroscopy SO LABORATORY AND ASTRONOMICAL HIGH RESOLUTION SPECTRA SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Workshop on Laboratory and Astronomical High Resolution Spectra, in Honour of the 150th Birthday of Charles Vievez (1844-1890) the Pioneer of Astronomical Spectroscopy CY AUG 29-SEP 02, 1994 CL BRUSSELS, BELGIUM C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 43 Z9 43 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-866733-01-5 J9 ASTR SOC P PY 1995 VL 81 BP 583 EP 588 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34C UT WOS:A1995BE34C00096 ER PT B AU Smith, BD AF Smith, BD BE Price, TD Gebauer, AB TI Seed plant domestication in eastern North America SO LAST HUNTERS-FIRST FARMERS: NEW PERSPECTIVES ON THE PREHISTORIC TRANSITION TO AGRICULTURE SE SCHOOL OF AMERICAN RESEARCH ADVANCED SEMINAR SERIES LA English DT Proceedings Paper CT 1992 School-of-American-Research Advanced Seminar on Last Hunters, First Farmers - New Perspectives on the Prehistoric Transition to Agriculture CY JUN, 1992 CL SCH AMER RES, SANTA FE, NM SP Sch Amer Res HO SCH AMER RES C1 SMITHSONIAN INST,DEPT ANTHROPOL,WASHINGTON,DC 20560. NR 0 TC 7 Z9 7 U1 1 U2 1 PU SCHOOL AMERICAN RESEARCH PRESS PI SANTA FE PA PO BOX 2188, SANTA FE, NM 87504-2188 BN 0-933452-90-X J9 SCH AM RES PY 1995 VL 354 BP 193 EP 213 PG 21 WC Anthropology; Archaeology SC Anthropology; Archaeology GA BE89A UT WOS:A1995BE89A00007 ER PT J AU KALFATOVIC, MR AF KALFATOVIC, MR TI TWOMBLY - A RETROSPECTIVE - VARNEDOE,K SO LIBRARY JOURNAL LA English DT Book Review RP KALFATOVIC, MR (reprint author), SMITHSONIAN INST LIB,WASHINGTON,DC, 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 JAN PY 1995 VL 120 IS 1 BP 99 EP 99 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QC391 UT WOS:A1995QC39100097 ER PT J AU RILEY, S AF RILEY, S TI NOVEL WITHOUT A NAME - DUONG,TH SO LIBRARY JOURNAL LA English DT Book Review RP RILEY, S (reprint author), SMITHSONIAN INST LIB,WASHINGTON,DC, 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 JAN PY 1995 VL 120 IS 1 BP 136 EP 136 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA QC391 UT WOS:A1995QC39100276 ER PT J AU CLIFTON, KE AF CLIFTON, KE TI ASYNCHRONOUS FOOD AVAILABILITY ON NEIGHBORING CARIBBEAN CORAL-REEFS DETERMINES SEASONAL PATTERNS OF GROWTH AND REPRODUCTION FOR THE HERBIVOROUS PARROTFISH SCARUS-ISERTI SO MARINE ECOLOGY PROGRESS SERIES LA English DT Article DE CORAL REEF FISH; SCARUS; FOOD AVAILABILITY; GROWTH; REPRODUCTIVE SEASONALITY ID CROICENSIS BLOCH SCARIDAE; STRIPED PARROTFISH; ACANTHURUS-NIGROFUSCUS; FISHES; BEHAVIOR; SEA; RECRUITMENT; MATURATION; SHELF; LUNAR AB Little is currently known about the temporal linkage between naturally occurring food levels and patterns of growth, reproduction, and feeding behavior by fishes on coral reefs. This study examines seasonal changes in these variables for populations of the herbivorous striped parrotfish Scarus iserti on 2 reefs in the San Bias region of Panama. Although less than 3 km apart, these populations experience notably different environmental conditions during Panama's annual cycle of rainfall and drought. In response to lower rainfall and higher dry-season winds and wave action, the renewal rate and standing crop of the striped parrotfish's algal food fell on a semi-exposed reef while rising on a more protected reef. Opposite trends occurred when wind and waves abated with the return of the wet season. In response, parrotfish on the 2 reefs showed opposite patterns of seasonal growth and reproduction, indicating that reef-associated environmental conditions determine seasonal peaks of reproduction for these fish. This result challenges the notion that planktonic conditions encountered during early life-history stages generally drive seasonal reproduction by coral reef fishes. C1 SMITHSONIAN TROP RES INST, BALBOA, PANAMA. NR 45 TC 46 Z9 47 U1 1 U2 5 PU INTER-RESEARCH PI OLDENDORF LUHE PA NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY SN 0171-8630 J9 MAR ECOL PROG SER JI Mar. Ecol.-Prog. Ser. PD JAN PY 1995 VL 116 IS 1-3 BP 39 EP 46 DI 10.3354/meps116039 PG 8 WC Ecology; Marine & Freshwater Biology; Oceanography SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Oceanography GA QF249 UT WOS:A1995QF24900004 ER PT J AU SMITH, LD AF SMITH, LD TI EFFECTS OF LIMB AUTOTOMY AND TETHERING ON JUVENILE BLUE-CRAB SURVIVAL FROM CANNIBALISM SO MARINE ECOLOGY PROGRESS SERIES LA English DT Article DE AUTOTOMY; NONLETHAL INJURY; BLUE CRAB; CALLINECTES SAPIDUS; PREDATION; CANNIBALISM; DENSITY-DEPENDENCE; ESCAPE RESPONSE; TETHERING ENCLOSURES ID CALLINECTES-SAPIDUS RATHBUN; CENTRAL CHESAPEAKE BAY; CAUDAL LAMELLAE LOSS; TAIL AUTOTOMY; ADAPTIVE SIGNIFICANCE; POPULATION REGULATION; SCINCELLA-LATERALIS; PREDATION RATES; CANCER-MAGISTER; FEEDING-HABITS AB High frequencies of limb loss (18 to 39%) in blue crab Callinectes sapidus Rathbun populations over broad temporal and spatial scales suggest that the autotomy response is an important escape mechanism. Limb loss, however, may increase vulnerability of prey in future encounters with predators. If individual survival is reduced significantly and injury frequency in the population is density-dependent, such nonlethal injury could affect population size. Annual frequencies of limb loss were positively correlated to blue crab abundances in the Rhode River, Maryland, USA, between 1986 and 1989, but results of open-field tethering experiments indicated that, overall, missing limbs did not increase juvenile vulnerability to predators. Limitations imposed by the tether on normal escape behavior, however, may have masked real survival differences among limb-loss treatments. To test for interactive effects of limb loss and tethering on survival from predation, I conducted a set of field experiments in 10 m(2) enclosures, using adult blue crabs as predators and intact and injured (missing 1 or 4 limbs), tethered and untethered juvenile conspecifics as prey. A second experiment, conducted in small wading pools, tested the impact of limb loss on escape speed and direction of juvenile blue crabs. Results of enclosure experiments demonstrated that: (1) under typical field conditions and crab densities, larger conspecifics do inflict lethal and nonlethal injury on juveniles; and (2) in encounters with predators, prior limb loss does not handicap crabs if escape is possible (untethered treatments), but does impose a defensive cost if escape is restricted (tethered treatments). In addition, survivorship patterns suggest that prey missing multiple limbs altered their activity patterns to decrease vulnerability. In wading pools, limb loss altered escape speed and direction, although effects varied depending on the type and number of missing Limbs. Together, these experiments indicate that prior Limb loss can have complex effects on escape effectiveness, defensive ability, and anti-predator behavior. They also suggest that, despite density-dependence, prior limb loss does not reduce blue crab fitness sufficiently to regulate population size. C1 UNIV MARYLAND, DEPT ZOOL, COLLEGE PK, MD 20742 USA. RP SMITH, LD (reprint author), SMITHSONIAN ENVIRONM RES CTR, POB 28, EDGEWATER, MD 21037 USA. NR 74 TC 43 Z9 44 U1 0 U2 12 PU INTER-RESEARCH PI OLDENDORF LUHE PA NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY SN 0171-8630 J9 MAR ECOL PROG SER JI Mar. Ecol.-Prog. Ser. PD JAN PY 1995 VL 116 IS 1-3 BP 65 EP 74 DI 10.3354/meps116065 PG 10 WC Ecology; Marine & Freshwater Biology; Oceanography SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Oceanography GA QF249 UT WOS:A1995QF24900007 ER PT J AU RUTZLER, K AF RUTZLER, K TI LOW-TIDE EXPOSURE OF SPONGES IN A CARIBBEAN MANGROVE COMMUNITY SO MARINE ECOLOGY-PUBBLICAZIONI DELLA STAZIONE ZOOLOGICA DI NAPOLI I LA English DT Article DE INTERTIDAL PORIFERA; RED-MANGROVE ROOTS; FOULING COMMUNITY; TEMPERATURE SALINITY STRESS; DESICCATION ID WATER SPONGE AB Sponges on subtidal red-mangrove prop roots may become exposed to air many times per year during very low tides. Full exposure is stressful and potentially fatal, particularly if occurring in full sun. Large root sponges show distinct species zonation between mean low water and -0.5 m. Haliclona implexiformis and Lissodendoryx isodictyalis are near the top while Scopalina ruetzleri are near the lower end of the range. Temporary experimental desiccation resulted in 100% recovery of all three species after they had been exposed to either sun or shade for up to 2 h. Scopalina is the least resistant and lost over 90% tissue within 3 days after the 4-h and 6-h experiments; the remaining cell mass succumbed to infestation by microbes. Haliclona and Lissodendoryx recovered from as much as 6 h in full sun but lost 85% and 80% of the original tissue volume, respectively. In Lissodendoryx, clusters of larvae developed in the regenerating fragments. Water loss tolerated by the three species is estimated as 66% of wet weight in Haliclona, 54% in Lissodendoryx and 38% in Scopalina. Salinity of interstitial seawater (pore water) extracted from exposed sponges rose from ambient 3.5% to 4.3-4.8% after 1 h, to 5.1-5.9% after 6 h. Most endobionts died or left their host during this last phase. Natural vertical zonation in these sponges reflects their resistance to tidal exposure. RP SMITHSONIAN INST, NATL MUSEUM NAT HIST, DEPT INVERTEBRATE ZOOL, WASHINGTON, DC 20560 USA. NR 32 TC 22 Z9 24 U1 0 U2 9 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0173-9565 J9 MAR ECOL-P S Z N I JI Mar. Ecol.-Pubbl. Stn. Zool. Napoli PY 1995 VL 16 IS 2 BP 165 EP 179 DI 10.1111/j.1439-0485.1995.tb00402.x PG 15 WC Marine & Freshwater Biology SC Marine & Freshwater Biology GA TJ672 UT WOS:A1995TJ67200006 ER PT B AU TSIANG, EY KELLOGG, EM PORTERFIELD, D AF TSIANG, EY KELLOGG, EM PORTERFIELD, D BE Postek, MT TI FIB 601 Focused ion beam fabrication of micron-sized apertures for the NASA AXAF X-ray telescope prelaunch calibration SO MICROLITHOGRAPHY AND METROLOGY IN MICROMACHINING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 1st Annual SPIE Conference on Microlithography and Metrology in Micromachining CY OCT 23-24, 1995 CL AUSTIN, TX SP Soc Photo Opt Instrumentat Engineers, Semiconductor Equipment & Mat Int, Natl Inst Stand & Technol DE AXAF; FOCUSED ION BEAMS; GAS-ASSISTED ETCHING; ION BEAM MILLING; SPUTTERING C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2006-9 J9 P SOC PHOTO-OPT INS PY 1995 VL 2640 BP 100 EP 110 DI 10.1117/12.222637 PG 11 WC Engineering, Manufacturing; Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BE24J UT WOS:A1995BE24J00012 ER PT B AU DISTEFANO, R AF DISTEFANO, R BE Fruchter, AS Tavani, M Backer, DC TI Does two-body tidal capture work in globular clusters? SO MILLISECOND PULSARS: A DECADE OF SURPRISE SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 1994 Aspen Winter Conference in Astrophysics CY JAN 03-07, 1994 CL ASPEN, CO SP Aspec Ctr Phys C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-91-0 J9 ASTR SOC P PY 1995 VL 72 BP 72 EP 74 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD96Q UT WOS:A1995BD96Q00010 ER PT B AU DISTEFANO, R RAPPAPORT, S AF DISTEFANO, R RAPPAPORT, S BE Fruchter, AS Tavani, M Backer, DC TI How large is the population of luminous supersoft X-ray sources? SO MILLISECOND PULSARS: A DECADE OF SURPRISE SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 1994 Aspen Winter Conference in Astrophysics CY JAN 03-07, 1994 CL ASPEN, CO SP Aspec Ctr Phys C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-91-0 J9 ASTR SOC P PY 1995 VL 72 BP 155 EP 157 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD96Q UT WOS:A1995BD96Q00019 ER PT J AU WISE, MA AF WISE, MA TI TRACE-ELEMENT CHEMISTRY OF LITHIUM-RICH MICAS FROM RARE-ELEMENT GRANITIC PEGMATITES SO MINERALOGY AND PETROLOGY LA English DT Article AB Granitic pegmatites characterized by advanced accumulation and fractionation of incompatible rare lithophile elements (Li, Rb, Cs, Be, Ta less than or greater than Nb, B, P and F), often contain mineral assemblages which host lithium-rich micas. Lepidolite and lithian muscovite occur in high-pressure spodumene, low-pressure petalite, phosphorus-enriched amblygonite and fluorine-rich lepidolite subtypes of orogenic affiliated complex type granitic pegmatites and rarely in anorogenic affiliated amazonite-bearing pegmatites. Trace element data determined by X-ray fluorescence for lepidolite of various pegmatite subtypes, morphology (''book'', ''scaly'', ''fine-grained''), position within the pegmatite (primary zones, replacement units, pockets), mineral assemblages and tectonic affinity (orogenic vs anorogenic) show extreme fractionation of Rb and Cs; modest levels of TI, Ga, Nb, Ta, Sn and Zn; and typically low abundances of Ba, Sr, Ni, Pb, Y, V, W and Zr. Extreme fractionation is indicated by low values of K/Rb, K/Cs and Nb/Ta which are lowest in lepidolite from petalite subtype pegmatites. No systematic differences in trace element content is evident among the different lepidolite morphologies or paragenetic position. Lepidolite from spodumene subtype pegmatites are generally slightly less fractionated than those from petalite or lepidolite subtype pegmatites. RP WISE, MA (reprint author), SMITHSONIAN INST,NATL MUSEUM AMER HIST,DEPT MINERAL SCI,MRC-119,WASHINGTON,DC 20560, USA. NR 21 TC 18 Z9 18 U1 4 U2 6 PU SPRINGER-VERLAG WIEN PI VIENNA PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA SN 0930-0708 J9 MINER PETROL JI Mineral. Petrol. PY 1995 VL 55 IS 1-3 BP 203 EP 215 DI 10.1007/BF01162588 PG 13 WC Geochemistry & Geophysics; Mineralogy SC Geochemistry & Geophysics; Mineralogy GA TD422 UT WOS:A1995TD42200014 ER PT J AU HARTQUIST, TW MENTEN, KM LEPP, S DALGARNO, A AF HARTQUIST, TW MENTEN, KM LEPP, S DALGARNO, A TI ON THE SPATIAL COINCIDENCE OF HYDROXYL AND METHANOL MASERS SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE MASERS; MOLECULAR PROCESSES; H-II REGIONS; RADIO LINES, ISM ID STAR-FORMING REGIONS; H-II REGIONS; DENSE INTERSTELLAR CLOUDS; MOLECULAR CLOUDS; VLBI OBSERVATIONS; OH MASERS; W3(OH); MODELS; GAS; GHZ AB We argue that purely gas-phase chemical models for the production of OH in hydroxyl masers around ultracompact H II regions such as W3(OH) cannot account for the CH3OH in the methanol masers that are found to coincide with the hydroxyl masers in these sources. We suggest that the CH3OH in the masers is injected into the gas phase by evaporation of the grain mantles, the grains being heated by the passage of weak shocks. Gas evaporation also injects H2O into the gas. Photodissociation of H2O, CH3OH and OH occur at similar rates, and substantial abundances of CH3OH and OH coexist. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV NEVADA,DEPT PHYS,LAS VEGAS,NV 89154. RP HARTQUIST, TW (reprint author), MAX PLANCK INST EXTRATER PHYS,D-85740 GARCHING,GERMANY. NR 47 TC 50 Z9 50 U1 0 U2 1 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JAN 1 PY 1995 VL 272 IS 1 BP 184 EP 188 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PZ475 UT WOS:A1995PZ47500015 ER PT S AU Fazio, GG AF Fazio, GG BE Philip, AGD Janes, KA Upgren, AR TI The impact of infrared array technology on astronomy SO NEW DEVELOPMENTS IN ARRAY TECHNOLOGY AND APPLICATIONS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 167th Symposium of the International-Astronomical-Union on New Developments in Array Technology and Applications CY AUG 23-27, 1994 CL THE HAGUE, NETHERLANDS SP IAU, Inst Space Observ, European SO Observ, Union Coll, Van Vleck Observ RP Fazio, GG (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3639-9 J9 IAU SYMP PY 1995 IS 167 BP 93 EP 93 PG 1 WC Astronomy & Astrophysics; Remote Sensing SC Astronomy & Astrophysics; Remote Sensing GA BE40H UT WOS:A1995BE40H00012 ER PT S AU DREW, JE MASON, KO CORDOVA, FA HORNE, KD MAUCHE, CW RAYMOND, JC AF DREW, JE MASON, KO CORDOVA, FA HORNE, KD MAUCHE, CW RAYMOND, JC BE Drew, JE TI ULTRAVIOLET ECLIPSE OBSERVATIONS OF AN ACCRETION DISK WIND SO NEW DEVELOPMENTS IN X-RAY AND ULTRAVIOLET ASTRONOMY SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Article; Proceedings Paper CT E1.2 Meeting of COSPAR Scientific Commission E, at the 30th COSPAR Scientific Assembly CY JUL 11-21, 1994 CL HAMBURG, GERMANY SP COMM SPACE RES, INT ASTRON UNION AB We present eclipse time series of ultraviolet CIV 1549 Angstrom and HeII line profiles in the spectrum of the nova-like variable UX UMa, obtained using the Goddard High Resolution Spectrometer (GHRS) on board the Hubble Space Telescope (HST), These data provide important new insights into the origin of these mainly wind-formed lines, Specifically, they show that the shallow line eclipses first discovered in International Ultraviolet Explorer (IUE) observations are due to the occultation of superposed narrow absorption features and provide the first clear evidence that the outflows in high-state cataclysmic variables (CV) are rooted in the inner accretion disk. C1 UCL, MULLARD SPACE SCI LAB, DORKING RH5 6NT, SURREY, ENGLAND. NASA HEADQUARTERS, WASHINGTON, DC 20546 USA. UNIV UTRECHT, STERREKUNDIG INST, 3058 TA UTRECHT, NETHERLANDS. LAWRENCE LIVERMORE NATL LAB, EXPTL ASTROPHYS LAB, LIVERMORE, CA 94550 USA. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP DREW, JE (reprint author), UNIV OXFORD, DEPT PHYS, PHYS NUCL LAB, KEBLE RD, OXFORD OX1 3RH, ENGLAND. OI Drew, Janet/0000-0003-1192-7082 NR 5 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042623-9 J9 ADV SPACE RES-SERIES PY 1995 VL 16 IS 3 BP 53 EP 56 DI 10.1016/0273-1177(95)00042-D PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BC67F UT WOS:A1995BC67F00006 ER PT J AU PATINO, S TYREE, MT HERRE, EA AF PATINO, S TYREE, MT HERRE, EA TI COMPARISON OF HYDRAULIC ARCHITECTURE OF WOODY-PLANTS OF DIFFERING PHYLOGENY AND GROWTH FORM WITH SPECIAL REFERENCE TO FREESTANDING AND HEMI-EPIPHYTIC FICUS SPECIES FROM PANAMA SO NEW PHYTOLOGIST LA English DT Article DE FICUS; HYDRAULIC ARCHITECTURE; LEAF SPECIFIC CONDUCTIVITY ID MODELS; TREES AB Hydraulic parameters were measured in seven species of Ficus (three free-standing and four hemi-epiphytic) on stem segments of 3-35 mm in wood diameter. Parameters measured included K-h (water flux per unit pressure gradient), K-L (leaf specific conductivity = K-h per unit leaf area), K-s (specific conductivity = K-h per unit wood cross section), and H-v (Huber value = wood cross section per unit leaf area). The hemi-epiphytes tended to have less conductive stems per unit leaf area (lower K-L) and invested less wood cross section per unit leaf area (lower H-v) than free-standing species. Hydraulic parameters of Ficus are compared to 21 other temperate and tropical species to see if there is any discernible pattern in hydraulic architecture that correlates with phylogeny, growth form or habitat occupied by diverse species. Figs, as a group, had relatively high K-s and relatively low H-v compared to other tropical trees. A possible correlation between K-L and transpiration and growth form is discussed. C1 AIKEN FORESTRY SCI LAB,BURLINGTON,VT 05402. SMITHSONIAN TROP RES INST,BALBOA,PANAMA. NR 18 TC 55 Z9 56 U1 1 U2 10 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0028-646X J9 NEW PHYTOL JI New Phytol. PD JAN PY 1995 VL 129 IS 1 BP 125 EP 134 DI 10.1111/j.1469-8137.1995.tb03016.x PG 10 WC Plant Sciences SC Plant Sciences GA QJ818 UT WOS:A1995QJ81800012 ER PT J AU WARD, DC AF WARD, DC TI THE LETTERS OF BRYANT,WILLIAM,CULLEN, VOL 5, 1865-1871, VOL 6, 1872-78 - BRYANT,WC, VOSS,TG, EDITORS SO NEW YORK HISTORY LA English DT Book Review RP WARD, DC (reprint author), SMITHSONIAN INST,NATL PORTRAIT GALLERY,WASHINGTON,DC 20560, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK STATE HIST ASSN PI COOPERSTOWN PA PO BOX 800, COOPERSTOWN, NY 13326-0800 SN 0146-437X J9 NEW YORK HIST JI N. Y. Hist. PD JAN PY 1995 VL 76 IS 1 BP 111 EP 113 PG 3 WC History SC History GA TB199 UT WOS:A1995TB19900013 ER PT J AU WEEKES, TC AF WEEKES, TC TI TEV GAMMA-RAY ASTRONOMY SO NUCLEAR PHYSICS B LA English DT Article; Proceedings Paper CT 16th International Conference on Neutrino Physics and Astrophysics (Neutrino 94) CY MAY 29-JUN 03, 1994 CL EILAT, ISRAEL SP TECHNION, ISRAEL INST TECHNOL, WEIZMANN INST SCI, HEBREW UNIV JERUSALEM, INT SCI FDN, ISRAEL MINIST SCI, ISRAEL MINIST TOURISM, EILAT MUNICIPAL, BOXENBAUM NETA FDN, IBM ISRAEL, INTEL ISRAEL, ISROTEL, ISRAEL ID INTERGALACTIC INFRARED RADIATION; HIGH-ENERGY; CRAB-NEBULA; MARKARIAN-421; ABSORPTION; CYGNUS-X-3 AB The atmospheric Cherenkov technique has been used to study TeV gamma-ray sources for over 30 years; it is the only viable technique in the energy band from 0.1 to 10 TeV and at least three sources have been detected. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,AMADO,AZ 85645. NR 31 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0550-3213 J9 NUCL PHYS B JI Nucl. Phys. B PD JAN PY 1995 SU 38 BP 457 EP 466 DI 10.1016/0920-5632(94)00781-P PG 10 WC Physics, Particles & Fields SC Physics GA QE887 UT WOS:A1995QE88700057 ER PT J AU JOENSEN, KD GORENSTEIN, P CHRISTENSEN, FE GUTMAN, G WOOD, JL AF JOENSEN, KD GORENSTEIN, P CHRISTENSEN, FE GUTMAN, G WOOD, JL TI GRAZING-INCIDENCE FE-LINE TELESCOPES USING W/B4C MULTILAYERS SO OPTICAL ENGINEERING LA English DT Article DE X-RAY TELESCOPES; MULTILAYERS; REFLECTIVITY ID X-RAY REFLECTION; SURFACES AB The loss of throughput observed at higher energies for traditional grazing-incidence x-ray telescopes coated with high-Z elements can be partly countered by employing multilayers on the outermost reflectors. Using 8-keV reflectivity data from a periodic W/B4C multilayer, the expected performance of intermediate-sized telescopes of (1) the nested Kirkpatrick-Baez geometry and (2) the conical approximation to a nested Wolter-I geometry is computed. Depending on the multilayer design, the throughput was increased by a factor of 3 to 5 in a 1.5-keV-wide band, or by 30% to 100% in a 3-keV-wide band. This gain is obtained at the expense of a 20% to 30% loss of throughput over the 2-to 4-keV band. These designs lend themselves well to astrophysics missions, such as spectroscopy of the H- and He-like iron emission lines (6.4 to 7.1 keV). The technology for multilayer coating, mounting, and configuring of the flat reflectors required by the Kirkpatrick-Baez telescope exists, so that an Fe-line multilayer telescope could be built today. C1 DANISH SPACE RES INST,DK-2800 LYNGBY,DENMARK. OSMIC INC,TROY,MI 48084. RP JOENSEN, KD (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,MAIL STOP 4,CAMBRIDGE,MA 02138, USA. NR 19 TC 4 Z9 4 U1 0 U2 0 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 JAN PY 1995 VL 34 IS 1 BP 283 EP 288 DI 10.1117/12.188342 PG 6 WC Optics SC Optics GA QB578 UT WOS:A1995QB57800038 ER PT J AU Herre, EA AF Herre, EA TI Factors affecting the evolution of virulence: Nematode parasites of fig wasps as a case study SO PARASITOLOGY LA English DT Article DE parasitism; virulence; fig wasps; nematodes; population structure; phylogeny ID VERTICAL TRANSMISSION; KIN SELECTION; SEX-RATIOS; FICUS; POLLINATORS; COEVOLUTION; MUTUALISM; PATHOGEN; MODEL AB The natural history of fig-pollinating wasps and their associated species-specific nematodes allows the measurement of many parameters which are relevant to testing hypotheses concerning host-parasite ecology and evolution. Within fig wasps species, it is possible to estimate lifetime reproductive success of foundress wasps as a function of presence or absence of nematode parasitism (virulence). Across species, there is a wide range of host population structures which, in turn, results in a range of opportunities for either horizontal or vertical nematode transmission. Therefore, estimates of virulence can be related to opportunities for transmission across a group of closely related hosts and their parasites. Further, the dynamics of the nematode infections over ecological and short-term evolutionary timescales can be monitored, giving added insight into the interpretation of the virulence estimates. Moreover, several scales of longer term evolutionary relationships are either known directly from fossil evidence or can be inferred from molecular data, providing deeper temporal context for the observed patterns. This combination of attributes permits detailed testing of hypotheses concerning the factors that potentially influence the evolution of virulence in host-parasite systems, and further, population and simulation models of the system that incorporate the parameter estimates can clarify the interpretation of how those factors act. There is little evidence suggesting that intermediate and long-term evolutionary relationships explain current levels of virulence. That is, it appears that virulence can change rapidly relative to speciation events, and that the nematodes do not tend to become 'benign over time'. Instead, it appears that host population structure can influence the evolution of parasite virulence by affecting the relative opportunities for horizontal to vertical transmission, which, in turn, influences the relative costs and benefits of virulence to the nematodes. At one level, increased opportunities for horizontal transmission decouple the reproductive interests of the individual nematodes from those of the individual hosts that they are directly parasitizing, thereby reducing the cost of virulence to individual nematodes. At another level, increased opportunities of horizontal transmission also increases the relative frequency of hosts infected by multiple strains of nematodes. This promotes the evolution of more virulent forms by increasing the relative importance of within-host competition among nematode strains, thereby favouring strains that 'eat more host sooner'. An interesting property of the fig-nematode systems is that the proportion of infected hosts does not change dramatically through time. This finding implies that there can be considerable negative effects on survival of infected hosts in addition to the previously documented reductions in fecundity of infected foundresses, because the latter are insufficient to account for the observed stability of wasp infection rates. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. NR 64 TC 44 Z9 44 U1 5 U2 27 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0031-1820 J9 PARASITOLOGY JI Parasitology PY 1995 VL 111 SU S BP S179 EP S191 PG 13 WC Parasitology SC Parasitology GA UQ614 UT WOS:A1995UQ61400011 ER PT B AU Drake, BG Jacob, J AF Drake, BG Jacob, J BE Mathis, P TI Acclimation of photosynthesis and the response of ecosystem carbon balance to rising atmospheric CO2 SO PHOTOSYNTHESIS: FROM LIGHT TO BIOSPHERE, VOL 5 LA English DT Proceedings Paper CT Xth International Photosynthesis Congress CY AUG 20-25, 1995 CL MONTPELLIER, FRANCE SP ADEME, Commissariat Energie Atom, CNRS, Commiss European Communities, DG XII, Conseil Gen Herault, Conseil Reg Languedoc Roussillon, European Sci Fdn, IFREMER, Inst Natl Rech Agronom, MESR, Programme ACCESS, Montpellier Dist, UNESCO, Univ Montpellier II, European Soc Photobiol, Int Union Bioch & Molec Biol, Soc Francaise Biophys, Soc Francais Photobiol, Soc Francaise Physiol Vegetale, Bambouseraie Prafrance, Beckman Instruments France, Boehringer Mannheim, Bruker Spectrospin, Continuum, Du Pont Nemours, EDF, Goemar, Henkel Corp, Hoffmann La Roche, Labs Yves Rocher, Louis Vuitton Moet Hennessy, Pharmacia Biotech, Rhone Poulenc Agrochim C1 SMITHSONIAN ENVIRONM RES CTR,EDGEWATER,MD 21037. NR 0 TC 0 Z9 0 U1 1 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3861-8 PY 1995 BP 767 EP 772 PG 4 WC Biochemistry & Molecular Biology; Plant Sciences; Ecology; Environmental Sciences; Genetics & Heredity; Spectroscopy SC Biochemistry & Molecular Biology; Plant Sciences; Environmental Sciences & Ecology; Genetics & Heredity; Spectroscopy GA BE93T UT WOS:A1995BE93T00174 ER PT J AU KIRBY, KP AF KIRBY, KP TI IONIC PROCESSES IN ASTROPHYSICS SO PHYSICA SCRIPTA LA English DT Article; Proceedings Paper CT Nobel Symposium 91 on Trapped Charged Particles and Related Fundamental Physics CY AUG 18-26, 1994 CL LYSEKIL, SWEDEN SP Nobel Fdn, Royal Swedish Acad Sci ID RADIATIVE RECOMBINATION; HEH+ AB Ions are ubiquitous in astrophysical environments. Knowledge of the cross sections and rates for the atomic and molecular processes which create ions and which destroy them is an important part of any detailed model of an astronomical object. Ions and ionic collisions in two very different environments, the early Universe and planetary nebulae, are explored in this paper. Electron-ion recombination leading to the eventual formation of primordial molecules is described. Collisions of ions with electrons and atoms, central to the interpretation of emission lines in astrophysical plasmas, are discussed. Recent work in predicting element abundances in planetary nebulae is highlighted. RP KIRBY, KP (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 36 TC 11 Z9 11 U1 0 U2 0 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA PUBL DEPT BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0281-1847 J9 PHYS SCRIPTA JI Phys. Scr. PY 1995 VL T59 BP 59 EP 64 DI 10.1088/0031-8949/1995/T59/007 PG 6 WC Physics, Multidisciplinary SC Physics GA TF444 UT WOS:A1995TF44400008 ER PT J AU GORRES, J WIESCHER, M THIELEMANN, FK AF GORRES, J WIESCHER, M THIELEMANN, FK TI BRIDGING THE WAITING POINTS - THE ROLE OF 2-PROTON CAPTURE REACTIONS IN THE RP-PROCESS SO PHYSICAL REVIEW C LA English DT Article ID ENERGY-LEVELS; ALPHA C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. UNIV BASEL,INST THEORET PHYS,CH-4056 BASEL,SWITZERLAND. RP GORRES, J (reprint author), UNIV NOTRE DAME,DEPT PHYS,NOTRE DAME,IN 46556, USA. NR 20 TC 80 Z9 82 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0556-2813 J9 PHYS REV C JI Phys. Rev. C PD JAN PY 1995 VL 51 IS 1 BP 392 EP 400 DI 10.1103/PhysRevC.51.392 PG 9 WC Physics, Nuclear SC Physics GA QD118 UT WOS:A1995QD11800044 ER PT B AU Dame, TM Thaddeus, P AF Dame, TM Thaddeus, P BE Ferrara, A McKee, CF Heiles, C Shapiro, PR TI Molecular gas at high z in the Milky Way SO PHYSICS OF THE INTERSTELLAR MEDIUM AND INTERGALACTIC MEDIUM SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Meeting in Honor of Professor George B Field on the Physics of the Interstellar Medium and Intergalactic Medium CY JUN 20-24, 1994 CL MARCIANA MARINA, ITALY C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-99-6 J9 ASTR SOC P PY 1995 VL 80 BP 15 EP 28 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34B UT WOS:A1995BE34B00002 ER PT B AU Dalgarno, A AF Dalgarno, A BE Ferrara, A McKee, CF Heiles, C Shapiro, PR TI Infrared emission from molecular hydrogen SO PHYSICS OF THE INTERSTELLAR MEDIUM AND INTERGALACTIC MEDIUM SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Meeting in Honor of Professor George B Field on the Physics of the Interstellar Medium and Intergalactic Medium CY JUN 20-24, 1994 CL MARCIANA MARINA, ITALY C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 5 Z9 5 U1 0 U2 2 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-99-6 J9 ASTR SOC P PY 1995 VL 80 BP 37 EP 44 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34B UT WOS:A1995BE34B00004 ER PT B AU Elvis, M Fiore, F Aldcroft, TL McDowell, JC Wilkes, BJ Bechtold, J AF Elvis, M Fiore, F Aldcroft, TL McDowell, JC Wilkes, BJ Bechtold, J BE Ferrara, A McKee, CF Heiles, C Shapiro, PR TI IGM constraints and the intracluster medium at z=3 from X-ray spectra of high redshift quasars SO PHYSICS OF THE INTERSTELLAR MEDIUM AND INTERGALACTIC MEDIUM SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Meeting in Honor of Professor George B Field on the Physics of the Interstellar Medium and Intergalactic Medium CY JUN 20-24, 1994 CL MARCIANA MARINA, ITALY C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 01238. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-99-6 J9 ASTR SOC P PY 1995 VL 80 BP 105 EP 113 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34B UT WOS:A1995BE34B00008 ER PT B AU Pandolfi, JM AF Pandolfi, JM BE Benton, TG Spencer, T TI Geomorphology of the uplifted pleistocene atoll at Henderson Island, Pitcairn Group SO PITCAIRN ISLANDS: BIOGEOGRAPHY, ECOLOGY AND PREHISTORY LA English DT Proceedings Paper CT International Discussion Meeting on the Pitcairn Islands - Biogeography, Ecology and Prehistory CY MAY 05-06, 1994 CL LINNEAN SOC, LONDON, ENGLAND SP Linnean Soc, Brit Ornithologists Union, BirdLife Int, Royal Soc London, UK Govt, Foreign & Commonwealth Off, UNESCO, Brit Broadcasting Corp HO LINNEAN SOC DE carbonate; reef zonation; palaeogeography; quaternary coral reef; Pitcairn Islands; spur and groove; atoll; lagoon RP Pandolfi, JM (reprint author), SMITHSONIAN TROP RES INST,POB 2072,BALBOA,PANAMA. RI Pandolfi, John/A-3121-2009 OI Pandolfi, John/0000-0003-3047-6694 NR 0 TC 0 Z9 0 U1 0 U2 0 PU ACADEMIC PRESS INC PI SAN DIEGO PA 525 B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 BN 0-12-089345-2 PY 1995 BP 63 EP 77 PG 15 WC Plant Sciences; Ecology; Geography; Zoology SC Plant Sciences; Environmental Sciences & Ecology; Geography; Zoology GA BF05T UT WOS:A1995BF05T00006 ER PT J AU WEN, J JANSEN, RK AF WEN, J JANSEN, RK TI MORPHOLOGICAL AND MOLECULAR COMPARISONS OF CAMPSIS-GRANDIFLORA AND CAMPSIS-RADICANS (BIGNONIACEAE), AN EASTERN ASIAN AND EASTERN NORTH-AMERICAN VICARIAD SPECIES PAIR SO PLANT SYSTEMATICS AND EVOLUTION LA English DT Article DE BIGNONIACEAE, CAMPSIS; MORPHOLOGICAL STASIS, MORPHOLOGY, CHLOROPLAST DNA, DISJUNCTION; FLORA OF EASTERN ASIA, EASTERN NORTH AMERICA ID CHLOROPLAST DNA EVOLUTION; DIVERGENCE; ASTERACEAE; PHYLOGENETICS; ONAGRACEAE; ORIGIN AB Morphological and molecular comparisons were made for Campsis grandiflora (THUNB.) K. SCHUMANN (Bignoniaceae) from eastern Asia and C. radicans (L.) SEEMANN from eastern North America. Chloroplast DNA (cpDNA) variation was surveyed with 20 restriction endonucleases. The cpDNA divergence between the two vicariad species was 2.44%, which is the highest reported among North Temperate disjunct taxa and one of the highest reported for infrageneric taxa. Detailed morphological comparisons also suggest a high level of divergence. Cluster analyses based on 22 morphological characters and 39 OTUs revealed two distinct groups corresponding with the two species. The average taxonomic distance between the two species was 1.806. Analyses of variance (ANOVA) revealed that 12 of the 18 quantitative characters differed significantly (alpha less than or equal to 0.01) between C. grandiflora and C. radicans. Divergence time based on cpDNA data was estimated as 24.4 million years. The Bering land bridge hypothesis was favored over the North Atlantic land bridge hypothesis based on the estimated divergence time and the geological history of the North Temperate region. The high levels of morphological and cpDNA divergence are not consistent with morphological stasis, which has been proposed as a common mode of evolution for North Temperate disjunct taxa. C1 UNIV TEXAS,DEPT BOT,AUSTIN,TX 78713. RP WEN, J (reprint author), SMITHSONIAN INST,MOLEC SYSTEMAT LAB,WASHINGTON,DC 20560, USA. RI Jansen, Robert/F-6272-2011 NR 37 TC 22 Z9 23 U1 0 U2 10 PU SPRINGER-VERLAG WIEN PI VIENNA PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA SN 0378-2697 J9 PLANT SYST EVOL JI Plant Syst. Evol. PY 1995 VL 196 IS 3-4 BP 173 EP 183 DI 10.1007/BF00982958 PG 11 WC Plant Sciences; Evolutionary Biology SC Plant Sciences; Evolutionary Biology GA RU155 UT WOS:A1995RU15500006 ER PT S AU COHEN, LM FREEMAN, MD PODGORSKI, WA AF COHEN, LM FREEMAN, MD PODGORSKI, WA GP SOC EXPTL MECH TI Temporal instability of graphite-cyanate ester composites and its effect on the high resolution mirror assembly of the NASA Advanced X-ray Astrophysics Facility SO PROCEEDINGS OF THE 1995 SEM SPRING CONFERENCE ON EXPERIMENTAL MECHANICS SE PROCEEDINGS OF THE INTERNATIONAL CONGRESS ON EXPERIMENTAL MECHANICS LA English DT Proceedings Paper CT 1995 SEM Spring Conference on Experimental Mechanics CY JUN 12-14, 1995 CL GRAND RAPIDS, MI SP Soc Exptl Mech, Slovene Soc Exptl Mech, JSME Mat & Mech Div, Brit Soc Strain Measurement C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 SN 1046-672X BN 0-912053-47-X J9 P INT CONG EXPERIT M PY 1995 BP 372 EP 377 PG 6 WC Materials Science, Multidisciplinary; Mechanics; Materials Science, Characterization & Testing; Materials Science, Composites; Optics SC Materials Science; Mechanics; Optics GA BD88F UT WOS:A1995BD88F00058 ER PT J AU KROMBEIN, KV AF KROMBEIN, KV TI SYSTEMATIC NOTES ON SOME SRI-LANKAN SCOLIIDAE (HYMENOPTERA, ACULEATA) SO PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON LA English DT Article DE WASPS; SCOLIIDAE; SRI LANKA; SYSTEMATICS; DISTRIBUTION AB Campsomeriella litoralis Krombein, new species, is described from both sexes, Scolia (Discolia) lankensis Krombein, new species, is described from a male, and the previously unknown female of Scolia (Discolia) gunawardaneae Krombein is also described. Distributional and systematic notes are added for 20 other species obtained since the family was revised in 1978. RP KROMBEIN, KV (reprint author), SMITHSONIAN INST,DEPT ENTOMOL,WASHINGTON,DC 20560, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENTOMOL SOC WASHINGTON PI WASHINGTON PA SMITHSONIAN INSTITUTION DEPT ENTOMOLOGY, WASHINGTON, DC 20560 SN 0013-8797 J9 P ENTOMOL SOC WASH JI Proc. Entomol. Soc. Wash. PD JAN PY 1995 VL 97 IS 1 BP 77 EP 85 PG 9 WC Entomology SC Entomology GA QK978 UT WOS:A1995QK97800009 ER PT J AU KROMBEIN, KV NORDEN, BB AF KROMBEIN, KV NORDEN, BB TI NOTES ON THE BEHAVIOR AND TAXONOMY OF MEGACHILE-(XEROMEGACHILE)-BRIMLEYI MITCHELL AND ITS PROBABLE CLEPTOPARASITE, COELIOXYS-(XEROCOELIOXYS)-GALACTIAE MITCHELL (HYMENOPTERA, MEGACHILIDAE) SO PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON LA English DT Article DE MEGACHILE; NEST; COELIOXYS; CLEPTOPARASITE AB Megachile brimleyi Mitchell and its probable cleptoparasite, Coelioxys galactiae Mitchell, were studied in south central Florida during August, 1992. Foraging adults were collected along with other bees and wasps attracted to the flowers of Galactia regularis and Tephrosia chrysophila. Excavation of two active M. brimleyi nests provided details of nest structure and cell construction. Difficulties in keying both female and male C. galactiae are discussed, and revised couplets are provided for females. RP KROMBEIN, KV (reprint author), SMITHSONIAN INST,DEPT ENTOMOL,WASHINGTON,DC 20560, USA. NR 0 TC 4 Z9 4 U1 1 U2 1 PU ENTOMOL SOC WASHINGTON PI WASHINGTON PA SMITHSONIAN INSTITUTION DEPT ENTOMOLOGY, WASHINGTON, DC 20560 SN 0013-8797 J9 P ENTOMOL SOC WASH JI Proc. Entomol. Soc. Wash. PD JAN PY 1995 VL 97 IS 1 BP 86 EP 89 PG 4 WC Entomology SC Entomology GA QK978 UT WOS:A1995QK97800010 ER PT J AU YOSHIDA, T TSUNETA, S GOLUB, L STRONG, K OGAWARA, Y AF YOSHIDA, T TSUNETA, S GOLUB, L STRONG, K OGAWARA, Y TI TEMPERATURE STRUCTURE OF THE SOLAR CORONA - COMPARISON OF THE NIXT AND YOHKOH X-RAY IMAGES SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN LA English DT Article DE SUN, CORONA; SUN, MAGNETIC FIELDS; SUN, X-RAYS; SUN, YOHKOH ID A MISSION; TELESCOPE; FLARE AB Solar soft X-ray images taken simultaneously by the Yohkoh and the Normal Incidence X-ray Telescope (NIXT) reveal significantly different coronal structures. Coronal loops are more clearly seen in the Yohkoh images, and the isolated island-like structures seen in the NIXT image have been found to correspond to the footpoints of the Yohkoh loops. The difference is due to the difference in the temperature response of the telescopes: NIXT is sensitive to temperatures ranging from 0.9 to 3 MK, while Yohkoh is more sensitive to temperatures above 2.5 MK. The morphological differences reflect the multi-temperature (1-5 MK) nature of the solar coronal plasmas. C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. LOCKHEED SOLAR & ASTROPHYS LAB,PALO ALTO,CA 94304. INST SPACE & ASTRONAUT SCI,SAGAMIHARA,KANAGAWA 229,JAPAN. RP YOSHIDA, T (reprint author), UNIV TOKYO,INST ASTRON,MITAKA,TOKYO 181,JAPAN. NR 13 TC 26 Z9 26 U1 0 U2 0 PU ASTRONOMICAL SOC JAPAN PI TOKYO PA C/O NATIONAL ASTRONOM OBSERV MITAKA-SHI, TOKYO 181, JAPAN SN 0004-6264 J9 PUBL ASTRON SOC JPN JI Publ. Astron. Soc. Jpn. PY 1995 VL 47 IS 2 BP L15 EP L19 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QW814 UT WOS:A1995QW81400003 ER PT B AU Mathur, S Elvis, M Wilkes, B AF Mathur, S Elvis, M Wilkes, B BE Meylan, G TI Testing unified X-ray - UV absorber models with NGC 5548 SO QSO ABSORPTION LINES SE ESO ASTROPHYSICS SYMPOSIA LA English DT Proceedings Paper CT ESO Workshop on QSO Absorption Lines CY NOV 21-24, 1994 CL GARCHING, GERMANY SP ESO C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN 33 PA HEIDELBERGER PLATZ 3, W-1000 BERLIN 33, GERMANY BN 3-540-60152-X J9 ESO ASTROPHY SYMP PY 1995 BP 245 EP 246 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE96X UT WOS:A1995BE96X00050 ER PT J AU POTTS, R DEINO, A AF POTTS, R DEINO, A TI MIDPLEISTOCENE CHANGE IN LARGE MAMMAL FAUNAS OF EAST-AFRICA SO QUATERNARY RESEARCH LA English DT Article ID SOUTHERN KENYA; LAINYAMOK; RIFT; AGE AB Single-crystal Ar-40/Ar-39 age estimates of 392,000 +/- 4000 to 330,000 +/- 6000 yr from Lainyamok, a middle Pleistocene fossil locality in the southern Kenya rift, document the oldest evidence from sub-Saharan Africa of a diverse, large mammal fauna consisting entirely of extant species. The inferred age of this fauna implies an upper limit for extinction of species that characterize well-calibrated, mid-Pleistocene fossil assemblages in East Africa. For its age and species richness, the Lainyamok fauna is surprising for its lack of extinct forms (e.g., the bovine Pelorovis) well documented in later faunal assemblages of East and South Africa. Definitive presence of the South African blesbok (Damaliscus dorcas) is also unexpected, especially as this alcelaphine bovid is the dominant large mammal in the Lainyamok fauna. These age estimates and the faunal composition at Lainyamok indicate that geographic ranges and taxonomic associations of extant large-bodied mammals were susceptible to wide fluctuations in sub-Saharan Africa over the past 330,000 yr. This inference is consistent with the hypothesis of nonanalogue, or ephemeral, biotas believed to characterize late Quaternary ecosystems of northern continents. (C) 1995 University of Washington. C1 NATL MUSEUMS KENYA,NAIROBI,KENYA. BERKELEY GEOCHRONOL CTR,BERKELEY,CA 94709. RP POTTS, R (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ANTHROPOL,WASHINGTON,DC 20560, USA. NR 45 TC 42 Z9 44 U1 1 U2 6 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0033-5894 J9 QUATERNARY RES JI Quat. Res. PD JAN PY 1995 VL 43 IS 1 BP 106 EP 113 DI 10.1006/qres.1995.1010 PG 8 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA QH145 UT WOS:A1995QH14500010 ER PT J AU Hedges, REM LeeThorp, JA Tuross, NC AF Hedges, REM LeeThorp, JA Tuross, NC TI Is tooth enamel carbonate a suitable material for radiocarbon dating? SO RADIOCARBON LA English DT Article; Proceedings Paper CT 15th International Radiocarbon Conference CY AUG 15-19, 1994 CL GLASGOW, SCOTLAND SP AOC Scotland Ltd, Brit Council, Brit Nucl Fuels plc, Glasgow Univ, Dept Archaeol, Univ Glasgow, Dept Stat, English Heritage, Glasgow City Council, Glasgow Dev Agcy, Greater Glasgow Tourist and Convent Bur, High Voltage Engn Europa B V, Hist Scotland, Int Sci Fdn, Nat Environm Res Council, NERC Radiocarbon Lab, Packard Instrument Co, Scottish Univ Res & Reactor Ctr, Radiocarbon Lab, Scottish Univ Res & Reactor Ctr, Thermoluminescence Lab, Wallac Oy ID BONE APATITE AB We present the results of 18 radiocarbon determinations on the carbonate fraction of tooth enamel prepared from nine separate teeth. The known ages of the teeth vary from 11 to >200 ka BP, and are from three sites. The sample preparation procedures varied somewhat, but were broadly based on procedures found to give satisfactory results on carbon stable isotope measurements. All the C-14 dates obtained are too young, by an equivalent contamination of ca. 6% Modern (pMC). This value is fairly consistent despite variations in sample preparation. We discuss the implications for using enamel as a possible alternative to bone when insufficient collagen is available. C1 UNIV CAPE TOWN,DEPT ARCHAEOL,RONDEBOSCH 7700,SOUTH AFRICA. SMITHSONIAN INST,CONSERVAT ANALYT LAB,MUSEUM SUPPORT CTR,WASHINGTON,DC 20560. RP Hedges, REM (reprint author), UNIV OXFORD,ARCHAEOL & HIST ART RES LAB,RADIOCARBON ACCELERATOR UNIT,6 KEBLE RD,OXFORD OX1 3QJ,ENGLAND. NR 18 TC 28 Z9 28 U1 0 U2 6 PU UNIV ARIZONA DEPT GEOSCIENCES PI TUCSON PA RADIOCARBON 4717 E FORT LOWELL RD, TUCSON, AZ 85712 SN 0033-8222 J9 RADIOCARBON JI Radiocarbon PY 1995 VL 37 IS 2 BP 285 EP 290 PG 6 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA UD868 UT WOS:A1995UD86800027 ER PT J AU Maniatis, Y Facorellis, Y Soter, S Katsonopoulou, D Kromer, B AF Maniatis, Y Facorellis, Y Soter, S Katsonopoulou, D Kromer, B TI Locating archaeological horizons with C-14 sediment dating: The case of the lost city of Helike SO RADIOCARBON LA English DT Article ID LAKE SEDIMENT; SOILS; DELTAS AB In 373 sc a catastrophic earthquake and seismic sea wave destroyed Helike, a Greek city near Aigion on the southern shore of the Gulf of corinth. The ruins were buried by sediments of unknown depth, leaving no trace of the city. We here discuss the radiocarbon dating of organic sediment samples recovered from seven boreholes drilled on the coastal plain in the area where ancient sources located Helike. Most of the samples apparently acquired a substantial addition of older carbon from natural sources, and hence their apparent ages are older than the true ages of sedimentation. However, if we assume that the addition is systematic, we can use the apparent ages to show that the sedimentation rate was initially rapid (about 1 cm yr(-1)) for the strata between 40 and 10 m below the surface, and then decreased by an order of magnitude about 6500 yr ago. A related change in the sediment deposition at about the same time has been found in many other marine deltas throughout the world, probably due to the deceleration of the global sea-level rise. we conclude that in the boreholes sampled by the present data, the horizon corresponding to ancient Helike is less than 8 m deep. C1 SMITHSONIAN INST,NATL AIR & SPACE MUSEUM,WASHINGTON,DC 20560. AMER SCH CLASS STUDIES,ATHENS 10676,GREECE. UNIV HEIDELBERG,INST ENVIRONM PHYS,D-6912 HEIDELBERG,GERMANY. RP Maniatis, Y (reprint author), NCSR DEMOKRITOS,INST MAT SCI,LAB ARCHAEOMETRY,AGHIA PARASKEVI 15310,ATTIKI,GREECE. NR 24 TC 0 Z9 0 U1 0 U2 0 PU UNIV ARIZONA DEPT GEOSCIENCES PI TUCSON PA RADIOCARBON 4717 E FORT LOWELL RD, TUCSON, AZ 85712 SN 0033-8222 J9 RADIOCARBON JI Radiocarbon PY 1995 VL 37 IS 3 BP 931 EP 941 PG 11 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA VG807 UT WOS:A1995VG80700011 ER PT J AU Wildt, D Pukazhenthi, B Brown, J Monfort, S Howard, J Roth, T AF Wildt, D Pukazhenthi, B Brown, J Monfort, S Howard, J Roth, T TI Spermatology for understanding, managing and conserving rare species SO REPRODUCTION FERTILITY AND DEVELOPMENT LA English DT Article; Proceedings Paper CT 7th International Symposium on Spermatology CY OCT 09-14, 1994 CL CAIRNS, AUSTRALIA SP Ansett Austr, Austr Acad Sci, Austr Int Dev Assistance Bur, Austr Soc Reprod Biol, Austr Nat Conservat Agcy, Austr Tourism Commiss, BioRad Labs, Brit Council, William A Cook Pty Ltd, Cryologic Pty Ltd, CSIRO, Div Wildlife & Ecol, Cooperat Res Ctr Biol Vertebrate Pest Control, Fertil Soc Austr, Hamilton Thorn Res, Monash Univ, Inst Reprod & Dev, Inst Engineers, Int Conf Support Scheme, Aust, Qantas Airways, Sense & Vis Electr Syst Ltd, Sheffield, UK, Serono Austr Pty Ltd, Royal Soc, London, Univ Adelaide, Wyeth Austr Pty Ltd DE conservation; spermatozoa; endocrinology; assisted reproduction; artificial insemination; biodiversity; genetic variation ID CHEETAH ACINONYX-JUBATUS; SPERM ACROSOME REACTION; CAT FELIS-BENGALENSIS; TIGER PANTHERA-TIGRIS; CERVUS-ELDI-THAMIN; ZONA-PELLUCIDA; INVITRO FERTILIZATION; DOMESTIC CAT; ARTIFICIAL-INSEMINATION; REPRODUCTIVE PHYSIOLOGY AB Most conventional spermatology research involves common mammalian species including livestock, laboratory animals and humans. Yet, there are more than 4500 mammalian species inhabiting the planet for which little is known about basic reproductive biology, including sperm characteristics and function. This information is important, not just as adjunct knowledge, but because the majority of these species are threatened with extinction, largely due to human-induced pressures. The field of conservation is changing rapidly, and global cooperation is emerging among a variety of wildlife enthusiasts, ranging from management authorities of nature reserves to curators of rare zoological collections. Conservation progress depends on systematic, multidisciplinary research first to answer basic questions, with new data then applied to endangered species management plans. The reproductive physiologist is a crucial component of this scheme. Reproduction is the essence of species survival, and enormous effort needs to be directed at these 'untraditional' research species, subspecies and populations. Spermatology research combined with simultaneous efforts in endocrinology, embryology and cryopreservation (among others) can lead to the successful application of assisted reproduction. Examples from this laboratory include an array of wild felid species and a rare cervid and mustelid. Obstacles to success are formidable, including unique species-specificities, diminished genetic diversity and a general lack of resources. Nonetheless, the field offers tremendous opportunities for generating unique knowledge of comparative interest and with conservation utility. RP Wildt, D (reprint author), SMITHSONIAN INST, NOAHS, CONSERVAT & RES CTR, NATL ZOOL PK, FRONT ROYAL, VA 22630 USA. FU NCRR NIH HHS [RR-00045]; NICHD NIH HHS [HD-00903, HD-23853] NR 49 TC 43 Z9 43 U1 3 U2 19 PU CSIRO PUBLISHING PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD, VICTORIA 3066, AUSTRALIA SN 1031-3613 J9 REPROD FERT DEVELOP JI Reprod. Fertil. Dev. PY 1995 VL 7 IS 4 BP 811 EP 824 DI 10.1071/RD9950811 PG 14 WC Developmental Biology; Reproductive Biology; Zoology SC Developmental Biology; Reproductive Biology; Zoology GA TP547 UT WOS:A1995TP54700014 PM 8711215 ER PT J AU SAVIN, DW GARDNER, LD REISENFELD, DB YOUNG, AR KOHL, JL AF SAVIN, DW GARDNER, LD REISENFELD, DB YOUNG, AR KOHL, JL TI IN-SITU ABSOLUTE CALIBRATION OF A CHANNEL ELECTRON MULTIPLIER FOR DETECTION OF POSITIVE-IONS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID MOLECULAR-HYDROGEN; MULTICHARGED IONS; LOW-ENERGY; EFFICIENCY; OPERATION C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RI Savin, Daniel/B-9576-2012; Reisenfeld, Daniel/F-7614-2015 OI Savin, Daniel/0000-0002-1111-6610; NR 25 TC 4 Z9 4 U1 0 U2 3 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 JAN PY 1995 VL 66 IS 1 BP 67 EP 71 DI 10.1063/1.1146531 PN 1 PG 5 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA QD123 UT WOS:A1995QD12300013 ER PT S AU CURIEL, S AF CURIEL, S BE Lizano, S Torrelles, JM TI Radio continuum observations of Herbig-Haro objects SO REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS, VOL 1, ABRIL 1995: CIRCUMSTELLAR DISKS, OUTFLOWS AND STAR FORMATION SE REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS LA English DT Proceedings Paper CT Circumstellar Disks, Outflows and Star Formation Conference CY NOV 28-DEC 02, 1994 CL COZUMEL, MEXICO DE ISM, JETS AND OUTFLOWS; ISM, DUST, EXTINCTION; RADIO CONTINUUM, GENERAL; STARS, FORMATION; STARS, MASS LOSS; STARS, PRE-MAIN-SEQUENCE C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 10 Z9 10 U1 0 U2 0 PU UNIVERSIDAD NACIONAL AUTONOMA MEXICO INSTITUTO ASTRONOMIA PI MEXICO CITY PA APARTADO POSTAL 70-264, MEXICO CITY 04510, MEXICO SN 1405-2059 J9 REV MEX AST ASTR PY 1995 VL 1 BP 59 EP 66 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD39Y UT WOS:A1995BD39Y00007 ER PT S AU LADA, CJ FICH, M AF LADA, CJ FICH, M BE Lizano, S Torrelles, JM TI The highly collimated bipolar outflow NGC 2264G SO REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS, VOL 1, ABRIL 1995: CIRCUMSTELLAR DISKS, OUTFLOWS AND STAR FORMATION SE REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS LA English DT Proceedings Paper CT Circumstellar Disks, Outflows and Star Formation Conference CY NOV 28-DEC 02, 1994 CL COZUMEL, MEXICO DE ISM, JETS AND OUTFLOWS; STARS, FORMATION C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 3 Z9 3 U1 0 U2 0 PU UNIVERSIDAD NACIONAL AUTONOMA MEXICO INSTITUTO ASTRONOMIA PI MEXICO CITY PA APARTADO POSTAL 70-264, MEXICO CITY 04510, MEXICO SN 1405-2059 J9 REV MEX AST ASTR PY 1995 VL 1 BP 93 EP 101 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD39Y UT WOS:A1995BD39Y00011 ER PT S AU WHITNEY, BA AF WHITNEY, BA BE Lizano, S Torrelles, JM TI Polarization models of embedded protostars SO REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS, VOL 1, ABRIL 1995: CIRCUMSTELLAR DISKS, OUTFLOWS AND STAR FORMATION SE REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS LA English DT Proceedings Paper CT Circumstellar Disks, Outflows and Star Formation Conference CY NOV 28-DEC 02, 1994 CL COZUMEL, MEXICO DE STARS, CIRCUMSTELLAR MATTER; STARS, PRE-MAIN-SEQUENCE; POLARIZATION; RADIATIVE TRANSFER C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 9 Z9 9 U1 0 U2 0 PU UNIVERSIDAD NACIONAL AUTONOMA MEXICO INSTITUTO ASTRONOMIA PI MEXICO CITY PA APARTADO POSTAL 70-264, MEXICO CITY 04510, MEXICO SN 1405-2059 J9 REV MEX AST ASTR PY 1995 VL 1 BP 201 EP 208 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD39Y UT WOS:A1995BD39Y00022 ER PT S AU KENYON, SJ AF KENYON, SJ BE Lizano, S Torrelles, JM TI The FU Orionis variable stars: Accretion in action SO REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS, VOL 1, ABRIL 1995: CIRCUMSTELLAR DISKS, OUTFLOWS AND STAR FORMATION SE REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS LA English DT Proceedings Paper CT Circumstellar Disks, Outflows and Star Formation Conference CY NOV 28-DEC 02, 1994 CL COZUMEL, MEXICO DE ACCRETION, ACCRETION DISKS; STARS, MASS LOSS; STARS, PRE-MAIN-SEQUENCE; STARS, VARIABLES C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 10 Z9 10 U1 0 U2 0 PU UNIVERSIDAD NACIONAL AUTONOMA MEXICO INSTITUTO ASTRONOMIA PI MEXICO CITY PA APARTADO POSTAL 70-264, MEXICO CITY 04510, MEXICO SN 1405-2059 J9 REV MEX AST ASTR PY 1995 VL 1 BP 237 EP 245 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD39Y UT WOS:A1995BD39Y00026 ER PT S AU HO, PTP AF HO, PTP BE Lizano, S Torrelles, JM TI Expectations from new instruments SO REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS, VOL 1, ABRIL 1995: CIRCUMSTELLAR DISKS, OUTFLOWS AND STAR FORMATION SE REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS LA English DT Proceedings Paper CT Circumstellar Disks, Outflows and Star Formation Conference CY NOV 28-DEC 02, 1994 CL COZUMEL, MEXICO DE ISM, DUST, EXTINCTION; ISM, MOLECULES STARS, CIRCUMSTELLAR MATTER; STARS, PLANETARY SYSTEMS C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 0 PU UNIVERSIDAD NACIONAL AUTONOMA MEXICO INSTITUTO ASTRONOMIA PI MEXICO CITY PA APARTADO POSTAL 70-264, MEXICO CITY 04510, MEXICO SN 1405-2059 J9 REV MEX AST ASTR PY 1995 VL 1 BP 363 EP 373 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD39Y UT WOS:A1995BD39Y00040 ER PT S AU Raymond, JC Curiel, S AF Raymond, JC Curiel, S BE Pena, M Kurtz, S TI The Cygnus Loop: Implications for SNR evolution SO REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA - SERIE DE CONFERENCIAS, VOL 3, DICIEMBRE 1995: THE FIFTH MEXICO-TEXAS CONFERENCE ON ASTROPHYSICS: GASEOUS NEBULAE AND STAR FORMATION SE REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, SERIE DE CONFERENCIAS LA English DT Proceedings Paper CT 5th Mexico/Texas Conference on Astrophysics - Gaseous Nebulae and Star Formation CY APR 03-05, 1995 CL TEQUESQUITENGO, MEXICO SP UNAM DE ISM, supernova remnants; shock waves C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 2 Z9 2 U1 0 U2 0 PU UNIVERSIDAD NACIONAL AUTONOMA MEXICO INSTITUTO ASTRONOMIA PI MEXICO CITY PA APARTADO POSTAL 70-264, MEXICO CITY 04510, MEXICO SN 1405-2059 J9 REV MEX AST ASTR PY 1995 VL 3 BP 199 EP 205 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE76Q UT WOS:A1995BE76Q00034 ER PT B AU Leiker, PS Sadler, PM Brecher, K AF Leiker, PS Sadler, PM Brecher, K BE Henry, GW Eaton, JA TI The micro-observatory: An automated telescope for education SO ROBOTIC TELESCOPES: CURRENT CAPABILITIES, PRESENT DEVELOPMENTS, AND FUTURE PROSPECTS FOR AUTOMATED ASTRONOMY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Symposium on Robotic Telescopes - Current Capabilities, Present Developments, and Future Prospects for Automated Astronomy, at the 106th Annual Meeting of the Astronomical-Society-of-the-Pacific CY JUN 28-30, 1994 CL FLAGSTAFF, AZ SP Astron Soc Pacific C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 1 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-98-8 J9 ASTR SOC P PY 1995 VL 79 BP 93 EP 98 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE34A UT WOS:A1995BE34A00010 ER PT J AU CUTLER, A AF CUTLER, A TI NOTES FROM THE UNDERGROUND SO SCIENCES-NEW YORK LA English DT Article RP CUTLER, A (reprint author), SMITHSONIAN INST,MUSEUM NATL HIST NAT,DEPT PALEOBIOL,WASHINGTON,DC, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 E 63RD ST, NEW YORK, NY 10021 SN 0036-861X J9 SCIENCES JI Sci.-New York PD JAN-FEB PY 1995 VL 35 IS 1 BP 36 EP 40 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PZ819 UT WOS:A1995PZ81900021 ER PT S AU Distefano, R Rappaport, S AF Distefano, R Rappaport, S BE Bohringer, H Morfill, GE Trumper, JE TI On the nature, population, and implications of luminous supersoft X-ray sources SO SEVENTEENTH TEXAS SYMPOSIUM ON RELATIVISTIC ASTROPHYSICS AND COSMOLOGY SE ANNALS OF THE NEW YORK ACADEMY OF SCIENCES LA English DT Article; Proceedings Paper CT 17th Texas Symposium on Relativistic Astrophysics and Cosmology CY DEC 11-17, 1994 CL MUNICH, GERMANY SP Max Planck Inst Extraterrestr Phys AB The discovery of a new class of object suggests three central questions: What is the physical nature of the objects? How many of them are there? What are the implications of the existence of this population? C1 MIT,DEPT PHYS,CAMBRIDGE,MA 02139. MIT,SPACE RES CTR,CAMBRIDGE,MA 02139. RP Distefano, R (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 EAST 63RD ST, NEW YORK, NY 10021 SN 0077-8923 BN 0-89766-941-X J9 ANN NY ACAD SCI JI Ann.NY Acad.Sci. PY 1995 VL 759 BP 328 EP 331 DI 10.1111/j.1749-6632.1995.tb17556.x PG 4 WC Astronomy & Astrophysics; Multidisciplinary Sciences SC Astronomy & Astrophysics; Science & Technology - Other Topics GA BF30H UT WOS:A1995BF30H00044 ER PT S AU Fabbiano, G AF Fabbiano, G BE Bohringer, H Morfill, GE Trumper, JE TI From X-ray observations to galaxy formation SO SEVENTEENTH TEXAS SYMPOSIUM ON RELATIVISTIC ASTROPHYSICS AND COSMOLOGY SE ANNALS OF THE NEW YORK ACADEMY OF SCIENCES LA English DT Article; Proceedings Paper CT 17th Texas Symposium on Relativistic Astrophysics and Cosmology CY DEC 11-17, 1994 CL MUNICH, GERMANY SP Max Planck Inst Extraterrestr Phys ID ELLIPTIC GALAXIES; EMISSION; RADIO RP Fabbiano, G (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU NEW YORK ACAD SCIENCES PI NEW YORK PA 2 EAST 63RD ST, NEW YORK, NY 10021 SN 0077-8923 BN 0-89766-941-X J9 ANN NY ACAD SCI JI Ann.NY Acad.Sci. PY 1995 VL 759 BP 624 EP 627 DI 10.1111/j.1749-6632.1995.tb17623.x PG 4 WC Astronomy & Astrophysics; Multidisciplinary Sciences SC Astronomy & Astrophysics; Science & Technology - Other Topics GA BF30H UT WOS:A1995BF30H00111 ER PT B AU PHILLIPS, JD HICKEY, C AF PHILLIPS, JD HICKEY, C BE Reasenberg, RD TI Beamsplitters for astronomical optical interferometry SO SPACEBORNE INTERFEROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Spaceborne Interferometry II CY APR 19-20, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 8 Z9 8 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1830-7 J9 P SOC PHOTO-OPT INS PY 1995 VL 2477 BP 132 EP 148 DI 10.1117/12.212989 PG 17 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BD53G UT WOS:A1995BD53G00013 ER PT B AU PHILLIPS, JD AF PHILLIPS, JD BE Reasenberg, RD TI A spectrometer for astronomical interferometry SO SPACEBORNE INTERFEROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Spaceborne Interferometry II CY APR 19-20, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1830-7 J9 P SOC PHOTO-OPT INS PY 1995 VL 2477 BP 149 EP 166 DI 10.1117/12.212990 PG 18 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BD53G UT WOS:A1995BD53G00014 ER PT B AU REASENBERG, RD BABCOCK, RW MURISON, MA NOECKER, MC PHILLIPS, JD SCHUMAKER, BL AF REASENBERG, RD BABCOCK, RW MURISON, MA NOECKER, MC PHILLIPS, JD SCHUMAKER, BL BE Reasenberg, RD TI POINTS: The instrument and its mission SO SPACEBORNE INTERFEROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Spaceborne Interferometry II CY APR 19-20, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1830-7 J9 P SOC PHOTO-OPT INS PY 1995 VL 2477 BP 167 EP 187 DI 10.1117/12.212991 PG 21 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BD53G UT WOS:A1995BD53G00015 ER PT B AU NOECKER, MC AF NOECKER, MC BE Reasenberg, RD TI Systematic errors in high-precision optical interferometric astrometry SO SPACEBORNE INTERFEROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Spaceborne Interferometry II CY APR 19-20, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1830-7 J9 P SOC PHOTO-OPT INS PY 1995 VL 2477 BP 188 EP 208 DI 10.1117/12.212992 PG 21 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BD53G UT WOS:A1995BD53G00016 ER PT B AU PHILLIPS, JD BABCOCK, RW MURISON, MA REASENBERG, RD BRONOWICKI, AJ GRAN, MH LILLIE, CF MCKINLEY, W ZIELINSKI, RJ AF PHILLIPS, JD BABCOCK, RW MURISON, MA REASENBERG, RD BRONOWICKI, AJ GRAN, MH LILLIE, CF MCKINLEY, W ZIELINSKI, RJ BE Reasenberg, RD TI Newcomb, a small astrometric interferometer SO SPACEBORNE INTERFEROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Spaceborne Interferometry II CY APR 19-20, 1995 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,SMITHSONIAN ASTROPHYS OBSERV,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1830-7 J9 P SOC PHOTO-OPT INS PY 1995 VL 2477 BP 209 EP 225 DI 10.1117/12.212993 PG 17 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BD53G UT WOS:A1995BD53G00017 ER PT S AU Gingerich, O AF Gingerich, O BE vanderKruit, PC Gilmore, G TI Report on the progress in stellar evolution to 1950 SO STELLAR POPULATIONS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 164th Symposium of the International-Astronomical-Union on Stellar Populations CY AUG 15-19, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union RP Gingerich, O (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 33 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3537-6 J9 IAU SYMP PY 1995 IS 164 BP 3 EP 20 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE43D UT WOS:A1995BE43D00001 ER PT S AU Kuijken, K AF Kuijken, K BE vanderKruit, PC Gilmore, G TI Dark matter in the Milky Way SO STELLAR POPULATIONS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 164th Symposium of the International-Astronomical-Union on Stellar Populations CY AUG 15-19, 1994 CL THE HAGUE, NETHERLANDS SP Int Astron Union ID GALACTIC DISK; MASS DENSITY; LUMINOSITY FUNCTION; GALAXY; STARS; HALO; SUN; CONSTRAINTS; EVOLUTION; MODEL C1 HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP Kuijken, K (reprint author), KAPTEYN ASTRON INST, POB 800, 9700 AV GRONINGEN, NETHERLANDS. NR 32 TC 2 Z9 2 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3537-6 J9 IAU SYMP PY 1995 IS 164 BP 195 EP 204 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE43D UT WOS:A1995BE43D00018 ER PT J AU KALFATOVIC, MR AF KALFATOVIC, MR TI CRITICAL APPROACHES TO INFORMATION TECHNOLOGY IN LIBRARIANSHIP - FOUNDATIONS AND APPLICATIONS - BUSCHMAN,J SO TECHNOLOGY AND CULTURE LA English DT Book Review RP KALFATOVIC, MR (reprint author), SMITHSONIAN INST,LIB,WASHINGTON,DC 20560, 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 0040-165X J9 TECHNOL CULT JI Technol. Cult. PD JAN PY 1995 VL 36 IS 1 BP 199 EP 200 DI 10.2307/3106363 PG 2 WC History & Philosophy Of Science SC History & Philosophy of Science GA QR382 UT WOS:A1995QR38200026 ER PT B AU Kirby, KP AF Kirby, KP BE Bergstrom, I Carlberg, C Schuch, R TI Ionic processes in astrophysics SO TRAPPED CHARGED PARTICLES AND RELATED FUNDAMENTAL PHYSICS: PROCEEDINGS OF NOBEL SYMPOSIUM 91 LA English DT Proceedings Paper CT Nobel Symposium 91 on Trapped Charged Particles and Related Fundamental Physics CY AUG 19-26, 1994 CL LYSEKIL, SWEDEN SP Royal Swedish Acad Sci, Nobel Fdn AB Ions are ubiquitous in astrophysical environments. Knowledge of the cross sections and rates for the atomic and molecular processes which create ions and which destroy them is an important part of any detailed model of an astronomical object. Ions and ionic collisions in two very different environments, the early Universe and planetary nebulae, are explored in this paper. Electron-ion recombination leading to the eventual formation of primordial molecules is described. Collisions of ions with electrons and atoms, central to the interpretation of emission lines in astrophysical plasmas, are discussed. Recent work in predicting element abundances in planetary nebulae is highlighted. RP Kirby, KP (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 981-02-2481-8 PY 1995 BP 59 EP 64 PG 6 WC Physics, Fluids & Plasmas; Physics, Atomic, Molecular & Chemical; Physics, Nuclear; Physics, Particles & Fields; Spectroscopy SC Physics; Spectroscopy GA BH75P UT WOS:A1995BH75P00008 ER PT J AU CONDIT, R AF CONDIT, R TI RESEARCH IN LARGE, LONG-TERM TROPICAL FOREST PLOTS SO TRENDS IN ECOLOGY & EVOLUTION LA English DT Review ID NEOTROPICAL FOREST; TREE; RECRUITMENT; MAINTENANCE; DIVERSITY; DYNAMICS AB The past 15 years has seen the creation of large (greater than or equal to 16 ha) permanent inventory plots in each of the major tropical forest formations of the world. Currently, six such plots have been fully mapped, and five more are under way. A standardized methodology is used at all sites a complete census of all trees and saplings down to 1 cm in diameter - thus assuring strict comparability between sites and allowing the development of general models for the dynamics of tropical forests. The inventories aim to gather demographic information on individual tree species, to provide long-term information on forest composition so that future changes can be detected, to estimate the economic value of forest resources, to generate models of sustainable extraction, and to provide data on underused native species for use in reforestation or plantation forestry. The plots also provide data from undisturbed forest to serve as a control for anthropological and management studies of harvested forests. RP CONDIT, R (reprint author), SMITHSONIAN TROP RES INST,UNIT 0948,APO,AA 34002, USA. NR 40 TC 158 Z9 230 U1 7 U2 45 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0169-5347 J9 TRENDS ECOL EVOL JI Trends Ecol. Evol. PD JAN PY 1995 VL 10 IS 1 BP 18 EP 22 DI 10.1016/S0169-5347(00)88955-7 PG 5 WC Ecology; Evolutionary Biology; Genetics & Heredity SC Environmental Sciences & Ecology; Evolutionary Biology; Genetics & Heredity GA QB763 UT WOS:A1995QB76300007 PM 21236939 ER PT B AU PERIVOLAROPOULOS, L AF PERIVOLAROPOULOS, L BE Kursunoglu, BN Mintz, S Perlmutter, A TI POWER SPECTRUM OF COSMIC STRING PERTURBATIONS ON THE MICROWAVE BACKGROUND SO UNIFIED SYMMETRY: IN THE SMALL AND IN THE LARGE LA English DT Proceedings Paper CT International Symposium on Unified Symmetry - In the Small and In the Large CY JAN 27-30, 1994 CL CORAL GABLES, FL SP Global Fdn Inc C1 HARVARD SMITHSONIAN CTR ASTROPHYS,DIV THEORET ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-44914-5 PY 1995 BP 113 EP 126 PG 14 WC Astronomy & Astrophysics; Physics, Particles & Fields; Physics, Mathematical SC Astronomy & Astrophysics; Physics GA BD13P UT WOS:A1995BD13P00007 ER PT B AU MORAN, JM DHAWAN, V AF MORAN, JM DHAWAN, V BE Zensus, JA Diamond, PJ Napier, PJ TI An introduction to calibration techniques for VLBI SO VERY LONG BASELINE INTERFEROMETRY AND THE VLBA SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Summer School on Very Long Baseline Interferometry and the VLBA CY JUN 23-30, 1993 CL SOCORRO, NM SP Natl Radio Astron Observ C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-866733-02-3 J9 ASTR SOC P PY 1995 VL 82 BP 161 EP 188 PG 28 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD96U UT WOS:A1995BD96U00009 ER PT B AU REID, MJ AF REID, MJ BE Zensus, JA Diamond, PJ Napier, PJ TI Spectral-line VLBI SO VERY LONG BASELINE INTERFEROMETRY AND THE VLBA SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Summer School on Very Long Baseline Interferometry and the VLBA CY JUN 23-30, 1993 CL SOCORRO, NM SP Natl Radio Astron Observ C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 8 Z9 8 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-866733-02-3 J9 ASTR SOC P PY 1995 VL 82 BP 209 EP 225 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD96U UT WOS:A1995BD96U00011 ER PT J AU NADKARNI, N PARKER, G AF NADKARNI, N PARKER, G TI CREATION OF THE CANOPY RESEARCH NETWORK SO VISUAL COMPUTER LA English DT Note C1 SMITHSONIAN ENVIRONM RES CTR,EDGEWATER,MD 21037. RP NADKARNI, N (reprint author), EVERGREEN STATE COLL LAB 1,OLYMPIA,WA 98505, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0178-2789 J9 VISUAL COMPUT JI Visual Comput. PY 1995 VL 11 IS 5 BP 275 EP 275 DI 10.1007/BF01901045 PG 1 WC Computer Science, Software Engineering SC Computer Science GA QR415 UT WOS:A1995QR41500005 ER PT S AU ROVERO, AC AF ROVERO, AC BE vanderHucht, KA Williams, PM TI SEARCH FOR TEV GAMMA-RAYS FROM WOLF-RAYET STARS SO WOLF-RAYET STARS: BINARIES, COLLIDING WINDS, EVOLUTION SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 163rd Symposium of the International-Astronomical-Union - Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution CY MAY 02-06, 1994 CL LA BIODOLA, ITALY SP Int Astron Union DE STARS, WOLF-RAYET; GAMMA-RAYS ID EMISSION; WINDS AB A search for TeV gamma-rays from the non-thermal radio stars WR125, WR140, WR144 and WR147 has yielded only upper limits. The implications are discussed. RP ROVERO, AC (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,WHIPPLE OBSERV,BOX 97,AMADO,AZ 85645, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-3183-4 J9 IAU SYMP PY 1995 IS 163 BP 518 EP 519 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BC83N UT WOS:A1995BC83N00113 ER PT B AU Kohl, JL Esser, R Gardner, LD Habbal, S Daigneau, PS Nystrom, GU Raymond, JC Strachan, L vanBallegooijen, AA Noci, G Fineschi, S Romoli, M Ciaravella, A Modigliani, A Huber, MCE Antonucci, E Benna, C Giordano, S vonderLuhe, O Tondello, G Nicolosi, P Naletto, G Pernechele, C Geiss, J Gloeckler, G Poletto, G Spadaro, D Allegra, A Basile, G Brusa, R Wood, B Siegmund, OHW AF Kohl, JL Esser, R Gardner, LD Habbal, S Daigneau, PS Nystrom, GU Raymond, JC Strachan, L vanBallegooijen, AA Noci, G Fineschi, S Romoli, M Ciaravella, A Modigliani, A Huber, MCE Antonucci, E Benna, C Giordano, S vonderLuhe, O Tondello, G Nicolosi, P Naletto, G Pernechele, C Geiss, J Gloeckler, G Poletto, G Spadaro, D Allegra, A Basile, G Brusa, R Wood, B Siegmund, OHW BE Fineschi, S TI The Ultraviolet Coronagraph Spectrometer for the Solar and Heliospheric Observatory: Instrument description and calibration overview SO X-RAY AND EUV/FUV SPECTROSCOPY AND POLARIMETRY SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on X-Ray and EUV/FUV Spectroscopy and Polarimetry CY JUL 11-12, 1995 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RI Romoli, Marco/H-6859-2012; Naletto, Giampiero/S-6329-2016 OI Naletto, Giampiero/0000-0003-2007-3138 NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1876-5 J9 P SOC PHOTO-OPT INS PY 1995 VL 2517 BP 40 EP 61 DI 10.1117/12.224917 PG 2 WC Astronomy & Astrophysics; Remote Sensing; Optics; Spectroscopy SC Astronomy & Astrophysics; Remote Sensing; Optics; Spectroscopy GA BE49P UT WOS:A1995BE49P00004 ER PT B AU COHEN, LM AF COHEN, LM BE Hoover, RB Walker, ABC TI EFFECTS OF TEMPORAL DIMENSIONAL INSTABILITY ON THE ADVANCED X-RAY ASTROPHYSICS FACILITY (AXAF-I) HIGH RESOLUTION MIRROR ASSEMBLY (HRMA) SO X-RAY AND EXTREME ULTRAVIOLET OPTICS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on X-Ray and Extreme Ultraviolet Optics CY JUL 09-11, 1995 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers DE TEMPORAL INSTABILITY; STABILITY; UNSTRAINED; ROOM TEMPERATURE; ALUMINUM; COMPOSITES; CYANATE-ESTERS; INVAR; TITANIUM; ZERODUR C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 1 Z9 1 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1874-9 J9 P SOC PHOTO-OPT INS PY 1995 VL 2515 BP 375 EP 390 DI 10.1117/12.212603 PG 16 WC Engineering, Aerospace; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Instruments & Instrumentation; Remote Sensing; Optics GA BD41V UT WOS:A1995BD41V00034 ER PT B AU ZHAO, P VANSPEYBROECK, LP AF ZHAO, P VANSPEYBROECK, LP BE Hoover, RB Walker, ABC TI AXAF VETA-I MIRROR X-RAY TEST RESULTS CROSS CHECK WITH THE HDOS METROLOGY DATA SO X-RAY AND EXTREME ULTRAVIOLET OPTICS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on X-Ray and Extreme Ultraviolet Optics CY JUL 09-11, 1995 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers DE AXAF; VETA-I; X-RAY MIRROR; SURFACE ROUGHNESS; SCATTERING; RAY-TRACE C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1874-9 J9 P SOC PHOTO-OPT INS PY 1995 VL 2515 BP 391 EP 409 DI 10.1117/12.212604 PG 19 WC Engineering, Aerospace; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Instruments & Instrumentation; Remote Sensing; Optics GA BD41V UT WOS:A1995BD41V00035 ER PT B AU KELLOGG, EM WARGELIN, B NORTON, T ENG, R AF KELLOGG, EM WARGELIN, B NORTON, T ENG, R BE Hoover, RB Walker, ABC TI PENNING SOURCE FOR CALIBRATION OF X-RAY AND EUV OPTICS AND SPECTROMETERS AT WAVELENGTHS AS SHORT AS 56-A SO X-RAY AND EXTREME ULTRAVIOLET OPTICS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on X-Ray and Extreme Ultraviolet Optics CY JUL 09-11, 1995 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1874-9 J9 P SOC PHOTO-OPT INS PY 1995 VL 2515 BP 418 EP 419 DI 10.1117/12.212607 PG 2 WC Engineering, Aerospace; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Instruments & Instrumentation; Remote Sensing; Optics GA BD41V UT WOS:A1995BD41V00037 ER PT J AU KRISHNAMURTHY, V WEMMER, C AF KRISHNAMURTHY, V WEMMER, C TI VETERINARY CARE OF ASIAN TIMBER ELEPHANTS IN INDIA - HISTORICAL ACCOUNTS AND CURRENT OBSERVATIONS SO ZOO BIOLOGY LA English DT Article DE VETERINARY MEDICINE; TRADITIONAL MEDICINE; TIMBER EXTRACTION; HUSBANDRY; ANIMAL WELFARE AB We discuss herein some of the historical factors that have influenced present day veterinary treatment and husbandry of Asian elephants used for timber extraction by Indian state forest departments. The British incorporated both indigenous and European practices into the veterinary management of timber elephants, and invested considerable time and energy to improve care and humane standards. The paper examines selected aspects of preventive and clinical treatment based on records from the Madras Presidency and present day Tamilnadu state. (C) 1995 Wiley-Liss, Inc. C1 NATL ZOOL PK,CTR CONSERVAT & RES,FRONT ROYAL,VA 22630. SALIM ALI CTR ORNITHOL & NAT HIST,COIMBATORE,TAMIL NADU,INDIA. NR 0 TC 5 Z9 6 U1 1 U2 4 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0733-3188 J9 ZOO BIOL JI Zoo Biol. PY 1995 VL 14 IS 2 BP 123 EP 133 DI 10.1002/zoo.1430140206 PG 11 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA QV115 UT WOS:A1995QV11500005 ER PT J AU THOMPSON, KV ROBERTS, M RALL, WF AF THOMPSON, KV ROBERTS, M RALL, WF TI FACTORS AFFECTING PAIR COMPATIBILITY IN CAPTIVE KANGAROO RATS, DIPODOMYS HEERMANNI SO ZOO BIOLOGY LA English DT Article DE CAPTIVE PROPAGATION; REPRODUCTION; HETEROMYIDS AB Captive propagation is a critical component of the Morro Bay Kangaroo Rat Recovery Plan, but past attempts to breed this and other kangaroo rat species have had mixed success. In three experiments using a closely related surrogate species, the Lompoc kangaroo rat, we evaluated the effects of familiarity and long-term housing experience on the behavior of captive males and females during dyadic encounters in an attempt to devise husbandry methods most conducive to reproduction. Females exhibited less aggression with and were more likely to allow physical contact with familiar males, provided the males had had previous social experience, such as that provided by living in close sensory contact with female conspecifics. Socialized males (those housed adjacent to females, separated from them by a wire mesh screen) were cautious, rather than persistent, when interacting with unfamiliar or anestrous females. Males housed in isolation from conspecifics were persistent whether or not they were familiar to the female. Pairs with very long periods of familiarity exhibited more nonaggressive contact than newly acquainted pairs. Results suggest that housing structures allowing longterm sensory contact between potential mates may improve breeding success in kangaroo rats and other solitary, aggressive species. (C) 1995 Wiley-Liss, Inc.* C1 ZOOL PK,DEPT ANIM HLTH,WASHINGTON,DC. RP THOMPSON, KV (reprint author), SMITHSONIAN INST,NATL ZOOL PK,DEPT ZOOL RES,WASHINGTON,DC 20008, USA. RI Thompson, Katerina/B-6146-2009 NR 0 TC 15 Z9 15 U1 1 U2 5 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0733-3188 J9 ZOO BIOL JI Zoo Biol. PY 1995 VL 14 IS 4 BP 317 EP 330 DI 10.1002/zoo.1430140404 PG 14 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA RR878 UT WOS:A1995RR87800003 ER PT J AU Brown, JL Wemmer, CM Lehnhardt, J AF Brown, JL Wemmer, CM Lehnhardt, J TI Urinary cortisol analysis for monitoring adrenal activity in elephants SO ZOO BIOLOGY LA English DT Article DE urine; cortisol; ACTH; adrenal activity AB Cortisol was measured in dichloromethane-extracted elephant urine using an I-125 solid-phase radioimmunoassay (RIA). The cortisol RIA was validated by demonstrating 1) parallelism between dilutions of pooled urinary extracts and the standard curve, 2) significant recovery of exogenous cortisol added to elephant urine, and 3) a relationship between changes in peripheral and urinary cortisol after an adrenocorticotropin hormone (ACTH) challenge. One African (Loxodonta africana) and one Asian (Elephas maximus) elephant were given three injections of ACTH (1.25 mg) at 2 h intervals. Serum cortisol increased four- to eightfold within 30 min after the first injection and peaked (nine- to twelvefold increase) after the second injection. Serum concentrations began to decline 2-3 h after the last injection but were still approximately fourfold higher than baseline at the end of the collection period (hour 8). In the urine, cortisol concentrations were increased in the first sample postinjection (1.5-4 h) and peaked twenty- to fortyfold by similar to 6 h. Urinary cortisol remained elevated at 8 h, but returned to baseline the following morning. Analysis of high performance liquid chromatography fractions of extracted urine revealed that immunoactivity was associated with free cortisol (similar to 90% of total immunoactivity) and a more polar, unidentified metabolite. A method for preserving urine was developed to allow storing unfrozen samples. One pool of urine from each of one African and two Asian elephants was divided into aliquots, placed in tubes containing absolute ethanol (10%), sodium azide (0.1%) or distilled water (control), acid frozen after 0, 1, 2, 3, 4, 6, 8, 10, 12, and 24 weeks of storage at similar to 25 degrees C. In unpreserved samples, cortisol concentrations were reduced 46% by 2 weeks and 95% by 24 weeks. In contrast, ethanol- and sodium azide-preserved samples retained 100 and 95% of cortisol immunoactivity through 8 weeks and 93 and 85% of activity through 12 weeks, respectively. We infer from these data that changes in urinary cortisol excretion in the elephant reflect fluctuations in adrenal activity and may be a useful indicator of stress. Additionally, urine samples can be collected and stored unfrozen for at least 2 months before any appreciable loss in cortisol immunoactivity occurs, a finding potentially useful to field application of this technique. (C) 1995 Wiley-Liss, Inc.* C1 DEPT MAMMALS,WASHINGTON,DC. RP Brown, JL (reprint author), NATL ZOOL PK,SMITHSONIAN INST,CTR CONSERVAT & RES,1500 REMOUNT RD,FRONT ROYAL,VA 22630, USA. NR 0 TC 33 Z9 35 U1 2 U2 10 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0733-3188 J9 ZOO BIOL JI Zoo Biol. PY 1995 VL 14 IS 6 BP 533 EP 542 DI 10.1002/zoo.1430140606 PG 10 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA TK878 UT WOS:A1995TK87800005 ER PT J AU Brown, JL Lehnhardt, J AF Brown, JL Lehnhardt, J TI Serum and urinary hormones during pregnancy and the peri- and postpartum period in an Asian elephant (Elephas maximus) SO ZOO BIOLOGY LA English DT Article DE parturition; progesterone; cortisol; prolactin AB Blood and urine samples were collected weekly from an Asian elephant (Elephas maximus) for 10 months before conception, throughout pregnancy, and for 10 months after parturition. Additional daily samples were collected for 41 days before through 10 days after parturition to define endocrine events during the peripartum period. During gestation, serum progesterone concentrations increased gradually and, after similar to 13 weeks, were higher (P < 0.05) than those observed during the nonpregnant luteal phase. Concentrations peaked at similar to 12 months of gestation, gradually declined during the last month, and then decreased sharply to nondetectable levels 2 days before parturition. A 12 week lactational anestrus was observed before cyclicity resumed. The urinary profile of progestagen excretion paralleled that of circulating progesterone (r = 0.79; P < 0.05); however, radioimmunoassay of HPLC-separated fractions of urinary eluates indicated that this immunoactivity was not associated with native progesterone. After remaining basal through the first 16 weeks of gestation, serum prolactin concentrations increased to 100-fold about midterm and remained elevated until after parturition. Neither serum nor urinary cortisol concentrations were altered during pregnancy, but both increased markedly the day after parturition and remained elevated above prepartum levels for several weeks thereafter. These data indicate that analysis of serum prolactin can confirm pregnancy in the Asian elephant after similar to 4 months of gestation and that daily monitoring of serum or urinary progestagens is useful for predicting parturition. (C) 1995 Wiley-Liss, Inc.* C1 DEPT MAMMALS,WASHINGTON,DC. RP Brown, JL (reprint author), NATL ZOOL PK,SMITHSONIAN INST,CTR CONSERVAT & RES,1500 REMOUNT RD,FRONT ROYAL,VA 22630, USA. NR 0 TC 40 Z9 42 U1 0 U2 5 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0733-3188 J9 ZOO BIOL JI Zoo Biol. PY 1995 VL 14 IS 6 BP 555 EP 564 DI 10.1002/zoo.1430140608 PG 10 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA TK878 UT WOS:A1995TK87800007 ER PT J AU BUDD, AF GUZMAN, HM AF BUDD, AF GUZMAN, HM TI SIDERASTREA GLYNNI, A NEW SPECIES OF SCLERACTINIAN CORAL (CNIDARIA, ANTHOZOA) FROM THE EASTERN PACIFIC SO PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON LA English DT Article ID ENVIRONMENTAL VARIATION AB A new species of Siderastrea (S. glynni) has been found in shallow (7-8.5 m deep) reef rubble north of Isla Uraba, Bay of Panama, in the eastern Pacific region. The species is extremely rare. Its colonies are unattached, spheroidal in shape, and approximately 7-10 cm in diameter. Siderastrea glynni is distinguished by relatively small corallites (2.5-3.5 mm); numerous thin septa (40-48 per corallite); a porous columella; and a distinctive synapticular meshwork. The discovery of the new species is unusual because the genus Siderastrea typically occurs today in the Atlantic and Indian Oceans and is known in the Pacific only from a rare occurrence in the Philippine Islands. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RP BUDD, AF (reprint author), UNIV IOWA,DEPT GEOL,IOWA CITY,IA 52242, USA. NR 27 TC 17 Z9 21 U1 0 U2 0 PU BIOL SOC WASHINGTON PI WASHINGTON PA NAT MUSEUM NAT HIST SMITHSONIAN INST, WASHINGTON, DC 20560 SN 0006-324X J9 P BIOL SOC WASH JI Proc. Biol. Soc. Wash. PD DEC 30 PY 1994 VL 107 IS 4 BP 591 EP 599 PG 9 WC Biology SC Life Sciences & Biomedicine - Other Topics GA PZ526 UT WOS:A1994PZ52600003 ER PT J AU PETTIBONE, MH AF PETTIBONE, MH TI ADDITIONAL RECORDS OF POLYNOID POLYCHAETES FROM THE JUAN-DE-FUCA RIDGE SO PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON LA English DT Article AB Additional specimens of two polynoid polychaetes, Bathycatalina filamentosa (Moore) (Macellicephalinae), and Harmothoe macnabi Pettibone (Harmothoniae), were collected from a new vent site on the Juan de Fuca Ridge. Based on these materials, both the subfamily Macellicephalinae and genus Bathycatalina are emended, the former to include Bathylevensteinia bicornis (Levenstein) and Gesiella jameensis (Hartmann-Schroder), and the descriptions of B. filamentosa and H. macnabi supplemented. RP PETTIBONE, MH (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT INVERTEBRATE ZOOL,WASHINGTON,DC 20560, USA. NR 12 TC 0 Z9 0 U1 0 U2 2 PU BIOL SOC WASHINGTON PI WASHINGTON PA NAT MUSEUM NAT HIST SMITHSONIAN INST, WASHINGTON, DC 20560 SN 0006-324X J9 P BIOL SOC WASH JI Proc. Biol. Soc. Wash. PD DEC 30 PY 1994 VL 107 IS 4 BP 609 EP 614 PG 6 WC Biology SC Life Sciences & Biomedicine - Other Topics GA PZ526 UT WOS:A1994PZ52600005 ER PT J AU GINGERICH, O AF GINGERICH, O TI HISTORY OF THE IAU - THE BIRTH AND FIRST HALF-CENTURY OF THE INTERNATIONAL-ASTRONOMICAL-UNION - BLAAUW,A SO SCIENCE LA English DT Book Review RP GINGERICH, O (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD DEC 23 PY 1994 VL 266 IS 5193 BP 2027 EP 2028 DI 10.1126/science.266.5193.2027 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PZ267 UT WOS:A1994PZ26700040 PM 17836518 ER PT J AU WILLMER, CNA KOO, DC SZALAY, AS KURTZ, MJ AF WILLMER, CNA KOO, DC SZALAY, AS KURTZ, MJ TI A MEDIUM-DEEP REDSHIFT SURVEY OF A MINISLICE AT THE NORTH GALACTIC POLE SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMOLOGY, OBSERVATIONS; GALAXIES, CLUSTERING; GALAXIES, DISTANCES AND REDSHIFTS ID VELOCITY DISPERSIONS; SCALE STRUCTURE; GALAXY SURVEY; PHOTOMETRY; CLUSTERS; RICH AB The first results from a new medium-deep redshift survey of galaxies in a 4 degrees by 49' slice close to the north Galactic pole have yielded 240 new redshifts, providing a total of 327 redshifts out of 814 galaxies visible to B = 20. This survey extends the transverse information for the first five peaks found in the redshift histogram from a deeper pencil beam sample reported by Broadhurst et al. The first peak, corresponding to the Great Wall, has a significant contribution from galaxies in the outer region of the Coma cluster. Another peak at z approximate to 0.125 is largely confined to a small area and would have been missed by the original deep cone survey if the position were shifted by only 1 degrees westward. Only one of the structures we detect has a wall-like appearance. In general, the high-density structures have irregular shapes, and alternate with low-density regions or voids with various sizes up to similar to 100 h(-1) Mpc, which is a pattern similar to that detected by the shallower wide-angle surveys. C1 UNIV CALIF SANTA CRUZ, LICK OBSERV, UNIV CALIF OBSERV, MT HAMILTON, CA 95140 USA. UNIV CALIF SANTA CRUZ, BOARD STUDIES ASTRON & ASTROPHYS, SANTA CRUZ, CA 95064 USA. EOTVOS LORAND UNIV, DEPT PHYS, BUDAPEST, HUNGARY. JOHNS HOPKINS UNIV, DEPT PHYS, BALTIMORE, MD 21218 USA. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP WILLMER, CNA (reprint author), OBSERV NACL RIO DE JANEIRO, RUA GEN JOSE CRISTINO 77, BR-20921030 RIO DE JANEIRO, BRAZIL. RI KURTZ, Michael /B-3890-2009; OI Kurtz, Michael/0000-0002-6949-0090; Koo, David/0000-0003-3385-6799 NR 29 TC 22 Z9 22 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 1994 VL 437 IS 2 BP 560 EP 563 DI 10.1086/175021 PN 1 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PX348 UT WOS:A1994PX34800004 ER PT J AU ALDCROFT, T ELVIS, M MCDOWELL, J FIORE, F AF ALDCROFT, T ELVIS, M MCDOWELL, J FIORE, F TI X-RAY CONSTRAINTS ON THE INTERGALACTIC MEDIUM SO ASTROPHYSICAL JOURNAL LA English DT Article DE INTERGALACTIC MEDIUM; QUASARS, ABSORPTION LINES; QUASARS, GENERAL; X-RAYS, GALAXIES ID BACKGROUND-RADIATION; GALAXY FORMATION; HIGH REDSHIFT; EVOLUTION; SPECTRUM; CLOUDS; IONIZATION; ELEMENTS; QUASAR; MATTER AB We use ROSAT PSPC spectra of z approximate to 3 quasars to constrain the density and temperature of the intergalactic medium (IGM). Strong low-energy cutoffs in PSPC spectra of high-redshift quasars are common. However, the absence of absorption toward some high-redshift quasars can be used to put limits on the possible cosmological density, Omega(G) of a hot diffuse IGM, via an X-ray ''Gunn-Peterson'' test using edge and line opacity in the soft X-rays. The K-edges of oxygen, neon, and carbon and the L-edge of iron produce most of the absorption which is spread out by the redshift of the source. We assume an isotropic, isothermal, nonevolving model of the IGM and calculate the optical depth of this absorption. We find that this test can constrain an enriched IGM at temperatures near 10(5)-10(6) K, intermediate between the hot IGM ruled out by COBE, and the cold IGM ruled out by the traditional Ly alpha Gunn-Peterson test. Photoionization of the IGM by the ultraviolet and X-ray background has a large effect. We give results for three z approximate to 3 quasars and discuss how the various trade-offs among temperature, abundance, and background radiation strength affect the limits on Omega(G). In addition to the high-redshift case, we discuss techniques for constraining the IGM using X-ray spectra of low-redshift quasars (z approximate to 0.1-0.3). Currently available X-ray spectral data have insufficient energy resolution to constrain the IGM unambiguously, and so expected detection limits for future high-resolution spectrometers are presented. We find that with a large effective area (approximate to 2000 cm(2)), it is possible to substantially constrain or detect the IGM at the densities which are typically predicted. RP ALDCROFT, T (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. OI Fiore, Fabrizio/0000-0002-4031-4157 NR 42 TC 24 Z9 24 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X EI 1538-4357 J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 1994 VL 437 IS 2 BP 584 EP 596 DI 10.1086/175023 PN 1 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PX348 UT WOS:A1994PX34800006 ER PT J AU DISTEFANO, R RAPPAPORT, S AF DISTEFANO, R RAPPAPORT, S TI THE DERIVED POPULATION OF LUMINOUS SUPERSOFT X-RAY SOURCES SO ASTROPHYSICAL JOURNAL LA English DT Article DE BINARIES, GENERAL; NOVAE, CATACLYSMIC VARIABLES; SUPERNOVAE, GENERAL; X-RAYS, GENERAL; WHITE DWARFS ID LARGE MAGELLANIC CLOUD; CAL-87; BINARY; KINEMATICS; MODELS; LMC AB The existence of a new class of astrophysical object, luminous supersoft X-ray sources, has been established through ROSAT satellite observations and analysis during the past similar to 3 yr. Because most of the radiation emitted by supersoft sources spans a range of wavelengths readily absorbed by interstellar gas, a substantial fraction of these sources may not detectable with present satellite instrumentation. It is therefore important to derive a reliable estimate of the underlying population, based on the similar to 30 sources that have been observed to date. The work reported here combines the observational results with a theoretical analysis, to obtain an estimate of the total number of sources likely to be present in M31, the Magellanic Clouds, and in our own Galaxy. We find that in M31, where similar to 15 supersoft sources have been identified and roughly an equal number of sources are being investigated as supersoft candidates, there are likely to be similar to 2500 active supersoft sources at the present time. In our own Galaxy, where about four supersoft sources have been detected in the Galactic plane, there are likely to be similar to 1000 active sources. Similarly, with about six and about four (nonforeground) sources observed in the Large and Small Magellanic Clouds, respectively, there should be similar to 30 supersoft sources in the LMC, and similar to 20 in the SMC. The likely uncertainties in the numbers quoted above, and the properties of observable sources relative to those of the total underlying population, are also derived in detail. These results can be scaled to estimate the numbers of supersoft sources likely to be present in other galaxies. The results reported here on the underlying population of supersoft X-ray sources are in good agreement with the results of a prior population synthesis study of the white dwarf accretor model for luminous supersoft X-ray sources (Rappaport, Di Stefano, and Smith 1994a). It should be emphasized, however, that the questions asked in these two investigations are distinct, that the approaches taken to answer these questions are largely independent, and that the findings of these two studies could in principle have been quite different. C1 MIT,DEPT PHYS,CAMBRIDGE,MA 02139. MIT,SPACE RES CTR,CAMBRIDGE,MA 02139. RP DISTEFANO, R (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,MS-51,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 32 TC 45 Z9 45 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 1994 VL 437 IS 2 BP 733 EP 741 DI 10.1086/175035 PN 1 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PX348 UT WOS:A1994PX34800018 ER PT J AU HAROLD, AS VARI, RP MACHADOALLISON, A PROVENZANO, F AF HAROLD, AS VARI, RP MACHADOALLISON, A PROVENZANO, F TI CREAGRUTUS HYSGINUS (TELEOSTEI, CHARACIFORMES), A NEW SPECIES OF CHARACID FROM NORTHEASTERN VENEZUELA, SUCRE STATE SO COPEIA LA English DT Article AB A new Ceagrutus species is described based on material from rivers draining into the Gulf of Paria, northeastern Venezuela. The species is distinguished by putatively derived characters of pigmentation of the fins, including a brilliant red adipose fin and the presence of dark pigment on only the lateral, unbranched ray of the pectoral fin. Other characters which, in combination, serve to distinguish C. hysginus include the presence of hooks on only the first two or three anal-fin rays, nine or 10 anal-fin rays, and a rounded or blotchlike humeral mark. C1 SMITHSONIAN INST, NATL MUSEUM NAT HIST, DEPT VERTEBRATE ZOOL, DIV FISHES, WASHINGTON, DC 20560 USA. CENT UNIV VENEZUELA, INST ZOOL TROP, CARACAS 1041, VENEZUELA. RP HAROLD, AS (reprint author), CALIF ACAD SCI, DEPT ICHTHYOL, GOLDEN GATE PK, SAN FRANCISCO, CA 94118 USA. NR 8 TC 2 Z9 2 U1 0 U2 0 PU AMER SOC ICHTHYOLOGISTS & HERPETOLOGISTS PI MIAMI PA MAUREEN DONNELLY, SECRETARY FLORIDA INT UNIV BIOLOGICAL SCIENCES, 11200 SW 8TH STREET, MIAMI, FL 33199 USA SN 0045-8511 EI 1938-5110 J9 COPEIA JI Copeia PD DEC 19 PY 1994 IS 4 BP 975 EP 979 PG 5 WC Zoology SC Zoology GA PZ200 UT WOS:A1994PZ20000013 ER PT J AU GRIFFITHS, RE RATNATUNGA, KU NEUSCHAEFER, LW CASERTANO, S IM, M WYCKOFF, EW ELLIS, RS GILMORE, GF ELSON, RAW GLAZEBROOK, K SCHADE, DJ WINDHORST, RA SCHMIDTKE, PC GORDON, JM PASCARELLE, SM ILLINGWORTH, GD KOO, DC BERSHADY, MA FORBES, DA PHILLIPS, AC GREEN, RF SARAJEDINI, V HUCHRA, JP TYSON, AJ AF GRIFFITHS, RE RATNATUNGA, KU NEUSCHAEFER, LW CASERTANO, S IM, M WYCKOFF, EW ELLIS, RS GILMORE, GF ELSON, RAW GLAZEBROOK, K SCHADE, DJ WINDHORST, RA SCHMIDTKE, PC GORDON, JM PASCARELLE, SM ILLINGWORTH, GD KOO, DC BERSHADY, MA FORBES, DA PHILLIPS, AC GREEN, RF SARAJEDINI, V HUCHRA, JP TYSON, AJ TI HUBBLE-SPACE-TELESCOPE MEDIUM DEEP SURVEY WITH THE WIDE-FIELD AND PLANETARY CAMERA .1. METHODOLOGY AND RESULTS ON THE FIELD NEAR 3C-273 SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMOLOGY, OBSERVATIONS; GALAXIES, FUNDAMENTAL PARAMETERS; GALAXIES, PHOTOMETRY; SURVEYS ID FAINT GALAXIES; RADIO GALAXY; SPECTROSCOPIC SURVEY; REDSHIFT GALAXIES; EVOLUTION; COUNTS; DECONVOLUTION; SAMPLES; IMAGES AB We present results from the Medium Deep Survey (MDS), a Key Project using the Hubble Space Telescope. Wide Field Camera images of random fields have been taken in ''parallel mode'' with an effective resolution of 0''.12 FWHM in the V(F555W) and I(F785LP) filters. The exposures presented here were targeted on a field 6' away from 3C 273, and resulted in similar to 5 hr integration time in each filter. Detailed morphological structure is seen in galaxy images with total integrated magnitudes down to V similar or equal to 22.5 and I similar to 21.5. Parameters are estimated that best fit the observed galaxy images, and 143 objects are identified (including 23 stars) in the field to a fainter limiting magnitude of I approximate to 23.5. We outline the extragalactic goals of the HST Medium Deep Survey, summarize our basic data reduction procedures, and present number (magnitude) counts, a color-magnitude diagram for the field, surface brightness profiles for the brighter galaxies, and best-fit half-light radii for the fainter galaxies as a function of apparent magnitude. A median galaxy half-light radius of 0''.4 is measured, and the distribution of galaxy sizes versus magnitude is presented. We observe an apparent deficit of galaxies with half-light radii between similar to 0''.6 and 1''.5, with respect to standard no-evolution or mild evolution cosmological models. An apparent excess of compact objects (half-light radii similar to 0''.1) is also observed with respect to those models. Finally, we find a small excess in the number of faint galaxy pairs and groups with respect to a random low-redshift field sample. C1 UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND. ARIZONA STATE UNIV,TEMPE,AZ 85287. UNIV CALIF SANTA CRUZ,LICK OBSERV,SANTA CRUZ,CA 95064. NATL OPT ASTRON OBSERV,TUCSON,AZ 85726. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. AT&T BELL LABS,MURRAY HILL,NJ 07974. RP GRIFFITHS, RE (reprint author), JOHNS HOPKINS UNIV,BLOOMBERG CTR,BALTIMORE,MD 21218, USA. RI Im, Myungshin/B-3436-2013; Glazebrook, Karl/N-3488-2015 OI Im, Myungshin/0000-0002-8537-6714; Glazebrook, Karl/0000-0002-3254-9044 NR 60 TC 84 Z9 84 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 10 PY 1994 VL 437 IS 1 BP 67 EP 82 DI 10.1086/174976 PN 1 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PW003 UT WOS:A1994PW00300007 ER PT J AU WARDLE, JFC CAWTHORNE, TV ROBERTS, DH BROWN, LF AF WARDLE, JFC CAWTHORNE, TV ROBERTS, DH BROWN, LF TI INTERPRETATION OF VLBI KINEMATIC AND POLARIZATION DATA - APPLICATION TO 3C-345 SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXIES, KINEMATICS AND DYNAMICS; GALAXIES, MAGNETIC FIELDS; POLARIZATION QUASARS, INDIVIDUAL (3C 345) ID EXTRAGALACTIC RADIO-SOURCES; PEARSON-READHEAD SAMPLE; LACERTAE OBJECT OJ-287; RELATIVISTIC JETS; BL-LACERTAE; SUPERLUMINAL MOTION; 24 OBJECTS; 3C-345; MODELS; CORE AB We present a new method of extracting kinematic information from multiepoch VLBI observations that relaxes the usual assumption that the jet is straight. Analyzing multiple observations of the quasar 3C 345 made by ourselves and by the Caltech group, we find that components C2 and C3 move along a common path and that their proper motions are consistent with a single constant pattern speed. With this assumption, we can then reconstruct the full three-dimensional trajectory of the jet. We find that the trajectory makes an initial angle theta similar or equal to 2 degrees with the line of sight and is gently curving away from it. The Lorentz factor of the pattern speed is at least 11.8 h(-1) (H-0 = 100 h km s(-1) Mpc(-1)). We then combine these kinematic constraints with the polarization information for component C3 and for the underlying jet obtained by VLBI polarimetry (Brown, Roberts, and Wardle 1994). We show that component 3C can be interpreted as a shock in a fluid jet with an ultrarelativistic equation of state. We explore the shock parameters that are consistent with the observations and determine the ranges of shock strength, thickness of the shocked region, upstream and downstream fluid velocities, and degree of order of the magnetic field in the underlying jet. We find that the shock speed is greater than that of the underlying jet (i.e., the fluid velocity is toward the nucleus in the frame of the shock) and that the shock must be rather weak. Also, there can be little particle acceleration in the shock apart from that due to adiabatic compression. This fast shock is in contrast to that required for the BL Lacertae object OJ 287, where the polarization, kinematic, and X-ray data show that the shock is slower than the underlying jet (Cawthorne and Wardle 1988). This difference may account in part for the slower superluminal speeds observed in BL Lacertae objects. C1 UNIV CENT LANCASHIRE,DEPT PHYS & ASTRON,PRESTON PR1 2HE,LANCS,ENGLAND. HARVARD SMITHSONIAN CTR ASTROPHYS,BOSTON,MA. CONNECTICUT COLL,DEPT PHYS & ASTRON,NEW LONDON,CT 06320. RP WARDLE, JFC (reprint author), BRANDEIS UNIV,DEPT PHYS,WALTHAM,MA 02254, USA. NR 27 TC 58 Z9 58 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 DEC 10 PY 1994 VL 437 IS 1 BP 122 EP 135 DI 10.1086/174980 PN 1 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PW003 UT WOS:A1994PW00300011 ER PT J AU SLANE, P AF SLANE, P TI X-RAY-EMISSION FROM PSR-0355+54 SO ASTROPHYSICAL JOURNAL LA English DT Article DE PULSARS, INDIVIDUAL (PSR 0355 + 54); RADIATION MECHANISMS, NONTHERMAL; X-RAYS, STARS ID RAPIDLY SPINNING PULSARS; DIRECT URCA PROCESS; NEUTRON-STARS; ENERGETIC RADIATION; MODEL ATMOSPHERES; PSR-1055-52 AB We have obtained a 20 ks observation of PSR 0355+54 using the ROSAT PSPC. The pulsar is detected with a count rate of 4.2(+/-1.3) x 10(-3) s(-1) above the background. While the similar to 70 source counts are insufficient for spectral fitting, we have derived source parameters for specific cases of power law as well as blackbody spectra. For a Crab-like spectrum (photon index alpha = 2) we find L(x)(0.1-2.4 keV)= 1.0 x 10(32) ergs s(-1) somewhat higher than upper limits reported from Einstein observations but consistent with typical L, versus E values for other pulsars. For blackbody emission, we derive a temperature upper limit of similar to 9.5 x 10(5) K for emission from the entire neutron star surface, which is consistent with standard models for cooling of the neutron star interior given a characteristic age 10(5.75) yr. No evidence is present for modulation at the 156 ms pulsar period, setting a weak upper limit of similar to 75% for the pulsed fraction of the X-ray signal. RP SLANE, P (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS, 60 GARDEN ST, CAMBRIDGE, MA 02138 USA. NR 40 TC 12 Z9 12 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 10 PY 1994 VL 437 IS 1 BP 458 EP 464 DI 10.1086/175009 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PW003 UT WOS:A1994PW00300040 ER PT J AU DACOSTA, LN VOGELEY, MS GELLER, MJ AF DACOSTA, LN VOGELEY, MS GELLER, MJ TI THE POWER SPECTRUM OF GALAXIES IN THE NEARBY UNIVERSE SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMOLOGY, OBSERVATIONS; GALAXIES, CLUSTERING; LARGE-SCALE STRUCTURE OF UNIVERSE ID LARGE-SCALE STRUCTURE; REDSHIFT SURVEY AB We compute the power spectrum of galaxy density fluctuations in a recently completed Southern Sky Redshift Survey of optically selected galaxies (SSRS2). The amplitude and shape of the SSRS2 power spectrum are consistent with results of the Center for Astrophysics redshift survey of the northern hemisphere (CfA2), including the abrupt change of slope on a scale of 30-50 h(-1) Mpc; these results are reproducible for independent volumes of space, and variations are consistent with the errors estimated from mock surveys. Taken together, the SSRS2 and the CfA2 form a complete sample of 14,383 galaxies which covers one-third of the sky. The power spectrum of this larger sample continues to rise on scales up to similar to 200 h(-1) Mpc, with weak evidence for flattening on the largest scales. The SSRS2 + CfA2 power spectrum and the power spectrum constraints implied by COBE are well matched by an Omega h similar to 0.2, Omega + lambda(0), = 1 cold dark matter model with minimal biasing of optically selected galaxies. C1 OBSERV NACL,CNPQ,DEPT ASTRON,BR-20921 RIO JANEIRO,BRAZIL. JOHNS HOPKINS UNIV,DEPT PHYS & ASTRON,BALTIMORE,MD 21218. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. SEOUL NATL UNIV,DEPT ASTRON,SEOUL 151,SOUTH KOREA. RP DACOSTA, LN (reprint author), INST ASTROPHYS,98 BIS BLVD ARAGO,F-75014 PARIS,FRANCE. NR 18 TC 5 Z9 5 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 DEC 10 PY 1994 VL 437 IS 1 BP L1 EP L4 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PW004 UT WOS:A1994PW00400001 ER PT J AU FULLER, RW CARDELLINA, JH JUREK, J SCHEUER, PJ ALVARADOLINDNER, B MCGUIRE, M GRAY, GN STEINER, JR CLARDY, J MENEZ, E SHOEMAKER, RH NEWMAN, DJ SNADER, KM BOYD, MR AF FULLER, RW CARDELLINA, JH JUREK, J SCHEUER, PJ ALVARADOLINDNER, B MCGUIRE, M GRAY, GN STEINER, JR CLARDY, J MENEZ, E SHOEMAKER, RH NEWMAN, DJ SNADER, KM BOYD, MR TI ISOLATION AND STRUCTURE-ACTIVITY FEATURES OF HALOMON-RELATED ANTITUMOR MONOTERPENES FROM THE RED ALGA PORTIERIA-HORNEMANNII SO JOURNAL OF MEDICINAL CHEMISTRY LA English DT Article ID TUMOR-CELL-LINES; DIVERSE PANEL AB Ten halogenated monoterpenes (2-6 and 8-12) related to the novel antitumor compound halomon (1) or to the carbocyclic analog 7 have been isolated from different geographic collections of the red alga, Portieria hornemannii. Structures were assigned on the basis of spectral analyses (primarily NMR and MS). The absolute configuration of isohalomon (2) was further established by X-ray crystallography. The compounds were comparatively evaluated alongside 1 and 7 in the U.S. National Cancer Institute's in vitro human tumor cell line screening panel. The results provide some interesting initial insights into the structure/activity relationships in this series. C1 UNIV HAWAII,DEPT CHEM,HONOLULU,HI 96822. NCI,FREDERICK CANC RES & DEV CTR,DYNCORP,PROGRAM RESOURCES INC,FREDERICK,MD 21702. CORNELL UNIV,BAKER LAB,DEPT CHEM,ITHACA,NY 14853. SMITHSONIAN INST,WASHINGTON,DC 20560. NCI,FAIRVIEW CTR,DIV CANC TREATMENT,DEV THERAPEUT PROGRAM,NAT PROD BRANCH,FREDERICK,MD 21701. FU NCI NIH HHS [CA 24487] NR 14 TC 64 Z9 66 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 16TH ST, NW, WASHINGTON, DC 20036 SN 0022-2623 J9 J MED CHEM JI J. Med. Chem. PD DEC 9 PY 1994 VL 37 IS 25 BP 4407 EP 4411 DI 10.1021/jm00051a019 PG 5 WC Chemistry, Medicinal SC Pharmacology & Pharmacy GA PW566 UT WOS:A1994PW56600019 PM 7996553 ER PT J AU YUN, MS HO, PTP LO, KY AF YUN, MS HO, PTP LO, KY TI A HIGH-RESOLUTION IMAGE OF ATOMIC-HYDROGEN IN THE M81 GROUP OF GALAXIES SO NATURE LA English DT Article ID NEUTRAL-HYDROGEN; KINEMATICS; NGC-3077 AB It has long been recognized that interactions between galaxies are important in determining their evolution. The distribution of gas-out of which new stars are formed-is strongly affected; in particular, gas may be concentrated near the nucleus, leading to a burst of star formation(1-4). Here we present a map of atomic hydrogen (H I) in the nearest interacting group of galaxies (that dominated by M81), obtained by combining 12 separate fields observed with the Very Large Array. The Hr that surrounds M81, M82 and NGC3077 (the most prominent galaxies in the group) is dominated by filamentary structures, clearly demonstrating the violent disruption of this system by tidal interactions. These observations should have detected all H I complexes more massive than 10(6) solar masses, meaning that our map contains all structures that might evolve into new dwarf galaxies. C1 CALTECH,PASADENA,CA 91125. UNIV ILLINOIS,DEPT ASTRON,URBANA,IL 61801. RP YUN, MS (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 30 TC 332 Z9 332 U1 1 U2 4 PU MACMILLAN MAGAZINES LTD PI LONDON PA PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW SN 0028-0836 J9 NATURE JI Nature PD DEC 8 PY 1994 VL 372 IS 6506 BP 530 EP 532 DI 10.1038/372530a0 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PW082 UT WOS:A1994PW08200045 PM 7990925 ER PT J AU LABANDEIRA, CC DILCHER, DL DAVIS, DR WAGNER, DL AF LABANDEIRA, CC DILCHER, DL DAVIS, DR WAGNER, DL TI 97-MILLION YEARS OF ANGIOSPERM-INSECT ASSOCIATION - PALEOBIOLOGICAL INSIGHTS INTO THE MEANING OF COEVOLUTION SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE CRETACEOUS; GRACILLARIIDAE; NEPTICULIDAE; MAGNOLIIDAE; PLATANOID ID LEAF MINES; EVOLUTION; DIVERSIFICATION; SEQUENCES; PARALLEL; PLANTS; RBCL AB From well preserved leaf damage of the mid-Cretaceous Dakota Flora (97 million years ago), three distinctive, insect-mediated feeding traces have been identified and assigned to two extant genera and one subfamily. These taxa are the leaf miners Stigmella and Ectoedemia of the Nepticulidae and Phyllocnistinae of the Gracillariidae. These fossils indicate that within 25 million years of early angiosperm radiation, the organs of woody dicots already were exploited in intricate and modern ways by insect herbivores, For Ectoedemia and its platanoid host, we document 97 million years of continuity for a plant-insect interaction. The early occurrence during the mid-Cretaceous of diverse and extensive herbivory on woody angiosperms may be associated with the innovation of deciduousness, in which a broadleafed angiosperm provided an efficient, but disposable, photosynthetic organ that withstood the increased cost of additional insect herbivory. Moreover, the group represented in this study, the leaf-mining Lepidoptera, exhibits a wide range of subordinal taxonomic differentiation and includes the Gracillariidae, a member of the most derived lepidopteran suborder, the Ditrysia. Ditrysian presence during the mid-Cretaceous, in addition to lepidopteran body-fossil evidence from Early Cretaceous and Late Jurassic deposits, suggests that the radiation of major lepidopteran lineages probably occurred during the Late Jurassic on a gymnosperm-dominated flora. C1 NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT ENTOMOL,WASHINGTON,DC 20560. UNIV FLORIDA,FLORIDA MUSEUM NAT HIST,DEPT NAT SCI,GAINESVILLE,FL 32611. UNIV CONNECTICUT,DEPT ECOL & EVOLUTIONARY BIOL,STORRS,CT 06269. RP LABANDEIRA, CC (reprint author), NATL MUSEUM NAT HIST,SMITHSONIAN INST,DEPT PALEOBIOL,WASHINGTON,DC 20560, USA. NR 73 TC 138 Z9 150 U1 3 U2 38 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD DEC 6 PY 1994 VL 91 IS 25 BP 12278 EP 12282 DI 10.1073/pnas.91.25.12278 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PW708 UT WOS:A1994PW70800105 PM 11607501 ER PT J AU BLACKMAN, EG FIELD, GB AF BLACKMAN, EG FIELD, GB TI NONTHERMAL ACCELERATION FROM RECONNECTION SHOCKS SO PHYSICAL REVIEW LETTERS LA English DT Article ID MAGNETIC RECONNECTION RP BLACKMAN, EG (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 17 TC 16 Z9 16 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 DEC 5 PY 1994 VL 73 IS 23 BP 3097 EP 3100 DI 10.1103/PhysRevLett.73.3097 PG 4 WC Physics, Multidisciplinary SC Physics GA PV018 UT WOS:A1994PV01800014 ER PT J AU PETAEV, MI BREARLEY, AJ AF PETAEV, MI BREARLEY, AJ TI EXSOLUTION IN FERROMAGNESIAN OLIVINE OF THE DIVNOE METEORITE SO SCIENCE LA English DT Article ID THERMOCHEMISTRY AB Ferromagnesian olivine, one of the most common minerals in the solar system, has been widely regarded as a continuous solid solution, although several thermodynamic analyses have suggested the possibility of a miscibility gap at low temperatures. Natural ferromagnesian olivine from the Divnoe meteorite contains compositionally different exsolution lamellae, providing direct evidence far the existence of a miscibility gap in iron-magnesium olivine solid solutions. C1 UNIV NEW MEXICO,INST METEORIT,DEPT EARTH & PLANETARY SCI,ALBUQUERQUE,NM 87131. RP PETAEV, MI (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138, USA. NR 18 TC 14 Z9 16 U1 0 U2 0 PU AMER ASSOC ADVANCEMENT SCIENCE PI WASHINGTON PA 1200 NEW YORK AVE, NW, WASHINGTON, DC 20005 USA SN 0036-8075 J9 SCIENCE JI Science PD DEC 2 PY 1994 VL 266 IS 5190 BP 1545 EP 1547 DI 10.1126/science.266.5190.1545 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA PV015 UT WOS:A1994PV01500039 PM 17841715 ER PT J AU LANGLEY, HD AF LANGLEY, HD TI DURFEE,ROBERT JOURNAL AND RECOLLECTIONS OF NEWPORT, RHODE-ISLAND, FREETOWN, MASSACHUSETTS, NEW-YORK-CITY AND LONG-ISLAND, JAMAICA AND CUBA, WEST-INDIES AND SAINT-SIMONS-ISLAND, GEORGIA C.1785-1810 - WOOD,VS SO AMERICAN NEPTUNE LA English DT Book Review RP LANGLEY, HD (reprint author), SMITHSONIAN INST,WASHINGTON,DC 20560, 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 WIN PY 1994 VL 54 IS 1 BP 63 EP 64 PG 2 WC History SC History GA NG910 UT WOS:A1994NG91000020 ER PT J AU CORT, LA AF CORT, LA TI IN SEARCH OF CERAMICS IN VIETNAM + CHU-DAU, BAT-TRANG, HUONG-CANH SO ASIAN ART & CULTURE LA English DT Article C1 SMITHSONIAN INST,FREER GALLERY ART,WASHINGTON,DC 20560. RP CORT, LA (reprint author), SMITHSONIAN INST,ARTHUR M SACKLER GALLERY,WASHINGTON,DC 20560, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 1352-2744 J9 ASIAN ART CULT JI Asian Art Cult. PD WIN PY 1994 VL 7 IS 1 BP 44 EP 61 PG 18 WC Art SC Art GA NJ709 UT WOS:A1994NJ70900004 ER PT J AU ALONSO, MV DACOSTA, LN LATHAM, DW PELLEGRINI, PS MILONE, AAE AF ALONSO, MV DACOSTA, LN LATHAM, DW PELLEGRINI, PS MILONE, AAE TI CCD CALIBRATION OF THE MAGNITUDE SCALE FOR THE SSRS2 SAMPLE - THE EQUATORIAL REGION SO ASTRONOMICAL JOURNAL LA English DT Article ID SKY REDSHIFT SURVEY; ZWICKY MAGNITUDES; GALAXIES C1 OBSERV ASTRON,CORDOBA,ARGENTINA. INST ASTROPHYS,F-75014 PARIS,FRANCE. HARVARD UNIV,SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP ALONSO, MV (reprint author), OBSERV NACL,RIO JANEIRO,BRAZIL. NR 19 TC 13 Z9 13 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1994 VL 108 IS 6 BP 1987 EP 1995 DI 10.1086/117211 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PU983 UT WOS:A1994PU98300001 ER PT J AU ROSE, JA BOWER, RG CALDWELL, N ELLIS, RS SHARPLES, RM TEAGUE, P AF ROSE, JA BOWER, RG CALDWELL, N ELLIS, RS SHARPLES, RM TEAGUE, P TI STELLAR POPULATIONS IN EARLY-TYPE GALAXIES - FURTHER EVIDENCE FOR ENVIRONMENTAL-INFLUENCES SO ASTRONOMICAL JOURNAL LA English DT Article ID ELLIPTICAL GALAXIES; STAR-FORMATION; RICH CLUSTERS; DISK; MORPHOLOGY; EVOLUTION; NUCLEI; FIELD C1 ROYAL OBSERV,EDINBURGH EH9 3HJ,MIDLOTHIAN,SCOTLAND. F L WHIPPLE OBSERV,SMITHSONIAN INST,AMADO,AZ 85645. UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND. UNIV DURHAM,DEPT PHYS,DURHAM DH1 3LE,ENGLAND. SPRI,CSSIP,POORAKA,AUSTRALIA. RP ROSE, JA (reprint author), UNIV N CAROLINA,DEPT PHYS & ASTRON,CHAPEL HILL,NC 27599, USA. NR 34 TC 53 Z9 53 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1994 VL 108 IS 6 BP 2054 EP 2068 DI 10.1086/117218 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PU983 UT WOS:A1994PU98300008 ER PT J AU HAMUY, M PHILLIPS, MM MAZA, J SUNTZEFF, NB DELLAVALLE, M DANZIGER, J ANTEZANA, R WISCHNJWESKY, M AVILES, R SCHOMMER, RA KIM, YC WELLS, LA RUIZ, MT PROSSER, CF KRZEMINSKI, W BAYLIN, CD HARTIGAN, P HUGHES, J AF HAMUY, M PHILLIPS, MM MAZA, J SUNTZEFF, NB DELLAVALLE, M DANZIGER, J ANTEZANA, R WISCHNJWESKY, M AVILES, R SCHOMMER, RA KIM, YC WELLS, LA RUIZ, MT PROSSER, CF KRZEMINSKI, W BAYLIN, CD HARTIGAN, P HUGHES, J TI SN 1992K - A TWIN TO THE SUBLUMINOUS TYPE IA SN 1991BG SO ASTRONOMICAL JOURNAL LA English DT Article ID SURFACE-BRIGHTNESS FLUCTUATIONS; HUBBLE CONSTANT; SUPERNOVAE; GALAXIES C1 UNIV CHILE,DEPT ASTRON,SANTIAGO,CHILE. EUROPEAN SO OBSERV,LA SILLA OBSERV,SANTIAGO 19,CHILE. EUROPEAN SO OBSERV,W-8046 GARCHING,GERMANY. YALE UNIV,DEPT ASTRON,NEW HAVEN,CT 06511. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. CARNEGIE INST WASHINGTON,LAS CAMPANAS OBSERV,LA SERENA,CHILE. UNIV MASSACHUSETTS,DEPT ASTRON,AMHERST,MA 01003. RP HAMUY, M (reprint author), NATL OPT ASTRON OBSERV,CERRO TOLOLO INTER AMER OBSERV,LA SERENA,CHILE. RI Maza, Jose/I-5722-2016; Ruiz, Maria Teresa/I-5770-2016; Hamuy, Mario/G-7541-2016 OI Maza, Jose/0000-0003-2068-1328; Ruiz, Maria Teresa/0000-0002-6799-1537; NR 24 TC 60 Z9 60 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1994 VL 108 IS 6 BP 2226 EP 2232 DI 10.1086/117235 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PU983 UT WOS:A1994PU98300025 ER PT J AU WELLS, LA PHILLIPS, MM SUNTZEFF, NB HEATHCOTE, SR HAMUY, M NAVARRETE, M FERNANDEZ, M WELLER, WG SCHOMMER, RA KIRSHNER, RP LEIBUNDGUT, B WILLNER, SP PELETIER, RF SCHLEGEL, EM WHEELER, JC HARKNESS, RP BELL, DJ MATTHEWS, JM FILIPPENKO, AV SHIELDS, JC RICHMOND, MW JEWITT, D LUU, J TRAN, HD APPLETON, PN ROBSON, EI TYSON, JA GUHATHAKURTA, P EDER, JA BOND, HE POTTER, M VEILLEUX, S PORTER, AC HUMPHREYS, RM JANES, KA WILLIAMS, TB COSTA, E RUIZ, MT LEE, JT LUTZ, JH RICH, RM WINKLER, PF TYSON, ND AF WELLS, LA PHILLIPS, MM SUNTZEFF, NB HEATHCOTE, SR HAMUY, M NAVARRETE, M FERNANDEZ, M WELLER, WG SCHOMMER, RA KIRSHNER, RP LEIBUNDGUT, B WILLNER, SP PELETIER, RF SCHLEGEL, EM WHEELER, JC HARKNESS, RP BELL, DJ MATTHEWS, JM FILIPPENKO, AV SHIELDS, JC RICHMOND, MW JEWITT, D LUU, J TRAN, HD APPLETON, PN ROBSON, EI TYSON, JA GUHATHAKURTA, P EDER, JA BOND, HE POTTER, M VEILLEUX, S PORTER, AC HUMPHREYS, RM JANES, KA WILLIAMS, TB COSTA, E RUIZ, MT LEE, JT LUTZ, JH RICH, RM WINKLER, PF TYSON, ND TI THE TYPE-IA SUPERNOVA 1989B IN NGC-3627 (M66) SO ASTRONOMICAL JOURNAL LA English DT Article ID LIGHT CURVES; STANDARD STARS; SPECTROPHOTOMETRIC STANDARDS; CCD PHOTOMETRY; SPECTRA; NGC-3627; NOVAE; SN-1991T C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RGO,E-38700 SANTA CRUZ PALMA,SPAIN. NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. UNIV TEXAS,DEPT ASTRON,AUSTIN,TX 78712. UNIV ILLINOIS,DEPT ASTRON,URBANA,IL 60801. UNIV BRITISH COLUMBIA,DEPT GEOPHYS & ASTRON,VANCOUVER V6T 1Z4,BC,CANADA. UNIV CALIF BERKELEY,DEPT ASTRON,BERKELEY,CA 94720. UNIV CALIF BERKELEY,CTR PARTICLE ASTROPHYS,BERKELEY,CA 94720. UNIV HAWAII,INST ASTRON,HONOLULU,HI 96822. STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305. CALTECH,PASADENA,CA 91125. IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,ASTRON PROGRAM,AMES,IA 50011. LANCASHIRE POLYTECH,SCH PHYS & ASTRON,PRESTON PR1 2TQ,LANCS,ENGLAND. AT&T BELL LABS,MURRAY HILL,NJ 07974. PRINCETON UNIV OBSERV,PRINCETON,NJ 08540. NATL ASTRON & IONOSPHERE CTR,ARECIBO OBSERV,ARECIBO,PR 00613. SPACE TELESCOPE SCI INST,BALTIMORE,MD 21218. KITT PEAK NATL OBSERV,NATL OPT ASTRON OBSERV,TUCSON,AZ 85726. UNIV MINNESOTA,DEPT ASTRON,MINNEAPOLIS,MN 55455. BOSTON UNIV,DEPT ASTRON,BOSTON,MA 02215. RUTGERS STATE UNIV,DEPT PHYS & ASTRON,SERIN PHYS LAB,PISCATAWAY,NJ 08854. UNIV CHILE,DEPT ASTRON,SANTIAGO,CHILE. YALE UNIV,DEPT ASTRON,NEW HAVEN,CT 06511. WASHINGTON STATE UNIV,ASTRON PROGRAM,PULLMAN,WA 99164. COLUMBIA UNIV,DEPT ASTRON,NEW YORK,NY 10027. MIDDLEBURY COLL,DEPT PHYS,MIDDLEBURY,VT 05753. PRINCETON UNIV,DEPT ASTROPHYS SCI,PRINCETON,NJ 08540. RP WELLS, LA (reprint author), NATL OPT ASTRON OBSERV,CERRO TOLOLO INTER AMER OBSERV,CASILLA 603,LA SERENA,CHILE. RI Peletier, Reynier/B-9633-2012; Costa, Edgardo /I-5274-2016; Ruiz, Maria Teresa/I-5770-2016; Hamuy, Mario/G-7541-2016; OI Costa, Edgardo /0000-0003-4142-1082; Ruiz, Maria Teresa/0000-0002-6799-1537; Appleton, Philip/0000-0002-7607-8766 NR 59 TC 129 Z9 129 U1 0 U2 9 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1994 VL 108 IS 6 BP 2233 EP 2250 DI 10.1086/117236 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PU983 UT WOS:A1994PU98300026 ER PT J AU DOBRZYCKA, D KENYON, SJ AF DOBRZYCKA, D KENYON, SJ TI A NEW SPECTROSCOPIC ORBIT FOR RS OPHIUCHI SO ASTRONOMICAL JOURNAL LA English DT Article ID T-CORONAE BOREALIS; SYMBIOTIC STARS; WHITE-DWARF; INHOMOGENEOUS-MEDIUM; ANGULAR-MOMENTUM; RECURRENT NOVAE; AX PERSEI; BINARY; ACCRETION; MODEL RP DOBRZYCKA, D (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. OI Kenyon, Scott/0000-0003-0214-609X NR 50 TC 63 Z9 63 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1994 VL 108 IS 6 BP 2259 EP 2266 DI 10.1086/117238 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PU983 UT WOS:A1994PU98300028 ER PT J AU MURISON, MA LECAR, M FRANKLIN, FA AF MURISON, MA LECAR, M FRANKLIN, FA TI CHAOTIC MOTION IN THE OUTER ASTEROID BELT AND ITS RELATION TO THE AGE OF THE SOLAR-SYSTEM SO ASTRONOMICAL JOURNAL LA English DT Article ID SHORT-PERIOD COMETS; ORIGINAL DISTRIBUTION; NUMERICAL EXPERIMENTS; HAMILTONIAN-SYSTEMS; ORBITS; STABILITY; TIME; INSTABILITY; IONIZATION; EVOLUTION RP MURISON, MA (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 38 TC 35 Z9 35 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1994 VL 108 IS 6 BP 2323 EP 2329 DI 10.1086/117245 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PU983 UT WOS:A1994PU98300035 ER PT J AU GOMEZ, JL ALBERDI, A MARCAIDE, JM MARSCHER, AP TRAVIS, JP AF GOMEZ, JL ALBERDI, A MARCAIDE, JM MARSCHER, AP TRAVIS, JP TI SYNCHROTRON EMISSION FROM BENT SHOCKED RELATIVISTIC JETS .3. ABERRATION OF LIGHT AND TIME-DELAY EFFECTS SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE GALAXIES, JETS; SHOCK WAVES; POLARIZATION; METHODS, NUMERICAL AB We present numerical results of a computer code which solves the transfer equation for the synchrotron radiation in extragalactic relativistic jets with bends and shock waves. We consider for the first time the influence on the emission of bent jets by two relativistic effects: aberration of light and time delays. We show that the importance of aberration effects depends on the degree of randomly oriented magnetic field within the jet, being null for jets with a completely randomly oriented magnetic field. We study the consequences of including time delays in bent shocked jets with diverging flow through a three dimensional numerical simulation. The lime delay produces rotations and deformations of the shock fronts when viewed in the observer's frame, which result in variations of the length of the shocked region and of the apparent relative velocity between different fluid lines. Hence the emission, in particular the linearly polarized flux density, associated with the shocked region is Strongly altered. We present numerical results which compare those obtained before and after taking into account both effects for a particular shocked, helical model jet, and show that the corrections are especially important in the polarized flux density. C1 UNIV VALENCIA, DEPT ASTRON, E-46100 BURJASSOT, SPAIN. BOSTON UNIV, DEPT ASTRON, BOSTON, MA 02215 USA. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP GOMEZ, JL (reprint author), CSIC, INST ASTROFIS ANDALUCIA, APARTADO E-3004, E-18080 GRANADA, SPAIN. NR 6 TC 28 Z9 28 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD DEC PY 1994 VL 292 IS 1 BP 33 EP 44 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV400 UT WOS:A1994PV40000005 ER PT J AU GOMEZ, JF CURIEL, S TORRELLES, JM RODRIGUEZ, LF ANGLADA, G GIRART, JM AF GOMEZ, JF CURIEL, S TORRELLES, JM RODRIGUEZ, LF ANGLADA, G GIRART, JM TI THE MOLECULAR CORE AND THE POWERING SOURCE OF THE BIPOLAR MOLECULAR OUTFLOW IN NGC 2264G SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (NGC 2264G); ISM, JETS AND OUTFLOWS; ISM, MOLECULES; STARS, PRE-MAIN-SEQUENCE ID RADIO-CONTINUUM EMISSION; HERBIG-HARO OBJECTS; HIGH-VELOCITY GAS; EXCITING SOURCE; INFRARED OBSERVATIONS; INTERSTELLAR AMMONIA; PROPER MOTIONS; L1551 IRS-5; CLOUD; SYSTEM AB We present NH3(1, 1) and (2, 2), and radio continuum observations toward the bipolar molecular outflow NGC 22640. We detected a high-density NH3 core of 0.08 x 0.06 pc in size, M similar or equal to 6[X(NH3)/10(-8)](-1) M., and T-K similar or equal to 15 K, located almost midway between the blueshifted and redshifted CO lobes of the outflow. Neither the infrared sources detected so far (with the exception of IRAS 06384+0958) nor VLA I, the radio continuum source previously detected in the area (and suggested as the powering source of the outflow), appears to be associated with the high-density molecular clump. However, we detected a new radio continuum source, VLA 2, close to the maximum of NH3 emission. This continuum source shows a jetlike morphology, elongated in the direction of the bipolar molecular outflow. We propose that VLA 2 is a deeply embedded low-mass star and the most likely powering source of the bipolar outflow in NGC 22640. We find that the mechanical luminosity of the wind from VLA 2 is of the same order as the mechanical luminosity of the outflow, and as the estimated stellar luminosity of the source. Thus, this remarkable source appears to provide a very efficient outflow acceleration mechanism. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. UNIV BARCELONA,DEPT ASTRON & METEOROL,E-08028 BARCELONA,SPAIN. IEC,SOC CATALANA FIS,ASTROFIS LAB,MADRID,SPAIN. RP GOMEZ, JF (reprint author), CSIC,INST ASTROFIS ANDALUCIA,C SANCHO PANZA S-N,APDO CORREOS 3004,E-18080 GRANADA,SPAIN. RI Girart, Josep/O-1638-2014; Gomez, Jose Francisco/D-8392-2016; OI Girart, Josep/0000-0002-3829-5591; Gomez, Jose Francisco/0000-0002-7065-542X; Torrelles, Jose Maria/0000-0002-6896-6085 NR 51 TC 24 Z9 24 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 DEC 1 PY 1994 VL 436 IS 2 BP 749 EP 753 DI 10.1086/174948 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV552 UT WOS:A1994PV55200031 ER PT J AU DAMIANI, F MICELA, G SCIORTINO, S HARNDEN, FR AF DAMIANI, F MICELA, G SCIORTINO, S HARNDEN, FR TI EINSTEIN X-RAY OBSERVATIONS OF HERBIG AE/BE STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, EMISSION-LINE, BE; STARS, PRE-MAIN-SEQUENCE; X-RAYS, STARS ID INTERMEDIATE-MASS STARS; O-TYPE STARS; MAIN-SEQUENCE EVOLUTION; T-TAURI STARS; ASTRONOMICAL DATA; UPPER LIMITS; ROTATIONAL VELOCITIES; STATISTICAL-METHODS; INFRARED-EMISSION; CATALOG AB We have investigated the X-ray emission from Herbig Ae/Be stars, using the full set of Einstein IPC observations. Of a total of 31 observed Herbig stars, 11 are confidently identified with X-ray sources, with four additional dubious identifications. We have used maximum likelihood luminosity functions to study the distribution of X-ray luminosity, and we find that Be stars are significantly brighter in X-rays than Ae stars and that their X-ray luminosity is independent of projected rotational velocity v sin i. The X-ray emission is instead correlated with stellar bolometric luminosity and with effective temperature, and also with the kinetic luminosity of the stellar wind. These results seem to exclude a solar-like origin for the X-ray emission, a possibility suggested by the most recent models of Herbig stars' structure, and suggest an analogy with the X-ray emission of O (and early B) stars. We also observe correlations between X-ray luminosity and the emission at 2.2 mu m (K band) and 25 mu m, which strengthen the case for X-ray emission of Herbig stars originating in their circumstellar envelopes. C1 HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02138 USA. RP DAMIANI, F (reprint author), IST & OSSERV ASTRON PALERMO, PIAZZA PARLAMENTO 1, I-90134 PALERMO, ITALY. OI Damiani, Francesco/0000-0002-7065-3061 NR 61 TC 44 Z9 44 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 1 PY 1994 VL 436 IS 2 BP 807 EP 817 DI 10.1086/174957 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV552 UT WOS:A1994PV55200040 ER PT J AU OROSZ, JA BAILYN, CD REMILLARD, RA MCCLINTOCK, JE FOLTZ, CB AF OROSZ, JA BAILYN, CD REMILLARD, RA MCCLINTOCK, JE FOLTZ, CB TI QUIESCENT ACCRETION DISKS IN BLACK-HOLE X-RAY NOVAE SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; BINARIES, SPECTROSCOPIC; BLACK HOLE PHYSICS; STARS, INDIVIDUAL (A0620-00, NOVA MUSCAE 1991); X-RAYS, STARS ID BINARY A0620-00; RADIAL-VELOCITY; MUSCAE 1991; EMISSION; STAR; MASS AB We present detailed time-resolved spectroscopy of the Balmer emission lines from two black hole binary systems in quiescence, A0620-00 and Nova Muscae 1991. We find extraordinary similarities between the two systems. There are 30-40 km s(-1) velocity variations of the emission lines over the orbital period, the phases of which are not aligned with the expected phase of the motion of the compact primary. Detailed modeling of both systems is complicated by variable hot spot components, regions of optical thickness, and intermittent excess emission in the blue line wings of the H alpha lines. Both sources also display low velocities at the outer edge of the accretion disk, implying a large primary Roche lobe and extreme mass ratios. These complications suggest that although simple optically thin, Keplerian alpha-disk models provide a useful parameterization of emission lines from these systems, the straightforward physical models they imply should be treated with great caution. C1 MIT,CTR SPACE RES,CAMBRIDGE,MA 02139. HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. MULTIPLE MIRROR TELESCOPE OBSERV,TUCSON,AZ 85721. KITT PEAK NATL OBSERV,NOAO,TOLEDO,OH. RP OROSZ, JA (reprint author), YALE UNIV,DEPT ASTRON,POB 208101,NEW HAVEN,CT 06511, USA. NR 33 TC 74 Z9 74 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 DEC 1 PY 1994 VL 436 IS 2 BP 848 EP 858 DI 10.1086/174962 PN 1 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV552 UT WOS:A1994PV55200045 ER PT J AU DAME, TM THADDEUS, P AF DAME, TM THADDEUS, P TI DETECTION OF A THICK MOLECULAR DISK IN THE GALAXY SO ASTROPHYSICAL JOURNAL LA English DT Article DE GALAXY, HALO; GALAXY, STRUCTURE; ISM, MOLECULES; ISM, STRUCTURE ID 1ST GALACTIC QUADRANT; H-I; CO SURVEY; RADIAL-DISTRIBUTION; MILKY-WAY; CLOUD; HALO; WORMS; PLANE AB The 1.2 m telescope at the Center for Astrophysics was used to conduct the first sensitive and systematic search for molecular gas in the inner Galaxy more than 100 pc from the Galactic plane. With an rms sensitivity per spectrum of 0.1 K at Delta v = 1.3 km s(-1) and a sampling interval of 3'.75 (0.43 beamwidth), the survey is 3-10 times more sensitive per unit solid angle than existing CO surveys of the plane, and 16 times more sensitive than the only previous extensive wide-latitude survey. Three selected regions centered on the plane were mapped, each similar to 1 degrees wide in l and similar to 8 degrees wide in b, at Galactic longitudes 30 degrees, 40 degrees, and 50 degrees; in all three there is CO emission near the terminal velocity extending up to 3 degrees from the plane. This CO is evidence for a faint, thick molecular disk in the inner Galaxy similar to 3 times as wide as that of the dense central CO layer, and comparable in width to the central H I layer. In the inner Galaxy regions surveyed, similar to 5% of the total emission, and possibly a comparable fraction of the H-2 mass, lies above the previously studied thin molecular disk. RP DAME, TM (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 19 TC 34 Z9 34 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 DEC 1 PY 1994 VL 436 IS 2 BP L173 EP L176 DI 10.1086/187660 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV554 UT WOS:A1994PV55400019 ER PT J AU LOSS, RD LUGMAIR, GW DAVIS, AM MACPHERSON, GJ AF LOSS, RD LUGMAIR, GW DAVIS, AM MACPHERSON, GJ TI ISOTOPICALLY DISTINCT RESERVOIRS IN THE SOLAR NEBULA - ISOTOPE ANOMALIES IN VIGARANO METEORITE INCLUSIONS SO ASTROPHYSICAL JOURNAL LA English DT Article DE METEORS AND METEORITES; NUCLEAR REACTIONS, NUCLEOSYNTHESIS, ABUNDANCES; SOLAR SYSTEM, FORMATION ID ALLENDE METEORITE; REFRACTORY INCLUSIONS; CHEMICAL-COMPOSITIONS; SYSTEM; MAGNESIUM; CHONDRITE; NEODYMIUM AB The isotopic compositions of Mg, Ca, Ti, Cr, Zn, Sr, Ba, Nd, and Sm were measured in four relatively unaltered refractory inclusions from the Vigarano carbonaceous chondrite meteorite. Three of the inclusions (USNM 1623-2, 1623-3, and 1623-8) show similar Mg, Ca, Ti, and Cr isotopic compositions to those found in most inclusions in the Allende carbonaceous chondrite. This indicates that these Vigarano inclusions sampled the same isotopic reservoirs as the majority of the Allende inclusions and that isotope signatures in the latter were not significantly modified by the secondary alteration that permeates most Allende inclusions. In contrast, inclusion 1623-5 has large deficits in Mg-26, Ca-48, and Ti-50 and small but distinct Cr-54, Zn-66, Sr-84, Ba-135, Ba-137, and Sm-144 anomalies. The magnitudes of these unusual anomalies in the refractory elements are within analytical uncertainty of those found in the Allende ''FUN'' inclusion C1, yet 1623-5 has a very different bulk chemical composition from C1. The fact that 1623-5 and C1 have identical isotopic anomalies yet have significantly distinct major and trace element contents provide convincing evidence for the presence of isotopically distinct reservoirs in the early solar system. C1 CURTIN UNIV TECHNOL,PERTH,WA 6001,AUSTRALIA. UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637. SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT MINERAL SCI,WASHINGTON,DC 20560. RP LOSS, RD (reprint author), UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,9500 GILMAN DR,LA JOLLA,CA 92093, USA. NR 33 TC 41 Z9 41 U1 1 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 1 PY 1994 VL 436 IS 2 BP L193 EP L196 DI 10.1086/187665 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV554 UT WOS:A1994PV55400024 ER PT J AU ELVIS, M LOCKMAN, FJ FASSNACHT, C AF ELVIS, M LOCKMAN, FJ FASSNACHT, C TI AN ACCURATE GALACTIC N-H MAP OF THE NORTH ECLIPTIC POLE SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE GALAXY, STRUCTURE; ISM, ABUNDANCES; RADIO LINES, ISM; X-RAYS, GENERAL ID MILKY-WAY; HALO GAS; HYDROGEN; QUASARS; CIRRUS; CLOUDS; CO AB The Galactic HI column density was measured at 21' angular resolution over an 8 degrees x 9 degrees region centered on the north ecliptic pole. Over the region N-H varies smoothly between 3 x 10(20) atoms cm(-2) and 8 x 10(20) atoms cm(-2); some structure is seen over most of the map on an 0.5-1 degrees scale. There are other possible sources of interstellar opacity in this direction which may add an equivalent 10(20) cm(-2) of HI. We evaluate the effect of uncertainties in the HI column density on implied X-ray fluxes of extragalactic objects. C1 NRAO,GREEN BANK,WV. RP ELVIS, M (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 GARDEN ST,CAMBRIDGE,MA 02138, USA. NR 28 TC 38 Z9 38 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD DEC PY 1994 VL 95 IS 2 BP 413 EP 417 DI 10.1086/192105 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV390 UT WOS:A1994PV39000005 ER PT J AU WOOD, DOS MYERS, PC DAUGHERTY, DA AF WOOD, DOS MYERS, PC DAUGHERTY, DA TI IRAS IMAGES OF NEARBY DARK CLOUDS SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE DUST, EXTINCTION; INFRARED, ISM, CONTINUUM; ISM, MOLECULES ID MOLECULAR CLOUD; DENSE CORES; ABSORPTION; EMISSION; ALPHA AB We have investigated similar to 100 nearby molecular clouds using the extensive, all-sky database of IRAS. The clouds in this study cover a wide range of physical properties including visual extinction, size, mass, degree of isolation, homogeneity and morphology. IRAS 100 and 60 mu m co-added images were used to calculate the 100 mu m optical depth of dust in the clouds. These images of dust optical depth compare very well with (CO)-C-12 and (CO)-C-13 observations, and can be related to H-2 column density. From the optical depth images we locate the edges of dark clouds and the dense cores inside them. We have identified a total of 43 ''IRAS clouds'' (regions with A(upsilon) > 2) which contain a total of 255 ''IRAS cores'' (regions with A(upsilon) > 4) and we catalog their physical properties. We find that the clouds are remarkably filamentary, and that the cores within the clouds are often distributed along the filaments. The largest cores are usually connected to other large cores by filaments. We have developed selection criteria to search the IRAS Point Source Catalog for stars that are likely to be associated with the clouds and we catalog the IRAS sources in each cloud or core. Optically visible stars associated with the clouds have been identified from the Herbig and Bell catalog. From these data we characterize the physical properties of the clouds including their star-formation efficiency. C1 HARVARD SMITHSONIAN CTR ASTROPHYS,CAMBRIDGE,MA 02138. RP WOOD, DOS (reprint author), NATL RADIO ASTRON OBSERV,POB 0,SOCORRO,NM 87801, USA. NR 29 TC 51 Z9 51 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD DEC PY 1994 VL 95 IS 2 BP 457 EP 501 DI 10.1086/192107 PG 45 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA PV390 UT WOS:A1994PV39000007 ER PT J AU DIAS, JLC MONTALI, RJ AF DIAS, JLC MONTALI, RJ TI STAPHYLOCOCCOSIS IN CAPTIVE EXOTIC WATERFOWL SO AVIAN PATHOLOGY LA English DT Article ID OSTEOMYELITIS; PATHOLOGY; TURKEYS AB Pathological and epidemiological findings are presented on staphylococcus aureus infections in 10 genera of waterfowl kept at the National Zoological Park, USA. Of 2450 Anseriformes necropsied between 1975 and 1992, 43 birds had local or systemic forms of staphylococcosis. Of these 28 (65.1%) were males and 15 (34.9%) were females and most of the deaths occurred between January and June (38 birds, 88.4%). Gross and histopathological lesions were seen in the heart, liver, spleen, kidneys, joints and central nervous system. They were consistent with multiple acute to chronic patterns of inflammatory reaction, ranging from mild to severe necrotizing suppurative exudation. Granulomatous responses were noted in many cases, mainly in the spleen and liver. Amyloidosis occurred concurrently in 14 birds, affecting mainly liver, spleen, kidneys, thyroids, pancreas and adrenals. The epidemiological factors indicate that the most likely route of infection was through the skin, secondary to the naturally aggressive anseriform breeding behaviour. This probably accounted for the greater prevalence of staphylococcosis in the males. C1 UNIV SAO PAULO,FAC MED VET & ZOOTECN,DEPT PATOL,SAO PAULO,BRAZIL. RP DIAS, JLC (reprint author), SMITHSONIAN INST,NATL ZOOL PK,DEPT PATHOL,WASHINGTON,DC 20008, USA. RI Catao-Dias, Jose Luiz/C-4897-2012 OI Catao-Dias, Jose Luiz/0000-0003-2999-3395 NR 25 TC 11 Z9 11 U1 0 U2 1 PU WORLD VETERINARY POULTRY ASSN PI NEWBURY PA INSTITUTE ANIMAL HEALTH, COMPTON LABORATORY, COMPTON NR, NEWBURY, BERKS, ENGLAND RG16, ONN SN 0307-9457 J9 AVIAN PATHOL JI Avian Pathol. PD DEC PY 1994 VL 23 IS 4 BP 659 EP 669 DI 10.1080/03079459408419035 PG 11 WC Veterinary Sciences SC Veterinary Sciences GA QD007 UT WOS:A1994QD00700005 PM 18671132 ER PT J AU SORENSON, LG DERRICKSON, SR AF SORENSON, LG DERRICKSON, SR TI SEXUAL SELECTION IN THE NORTHERN PINTAIL (ANAS-ACUTA) - THE IMPORTANCE OF FEMALE CHOICE VERSUS MALE-MALE COMPETITION IN THE EVOLUTION OF SEXUALLY SELECTED TRAITS SO BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY LA English DT Article DE SEXUAL SELECTION; MATE CHOICE; ANAS ACUTA; DOMINANCE; COURTSHIP; MALE-MALE COMPETITION ID AMERICAN BLACK DUCKS; MALE SATIN BOWERBIRDS; RED JUNGLE FOWL; MATE CHOICE; PAIRING CHRONOLOGY; SOCIAL-DOMINANCE; MALLARDS; PLUMAGE; PLATYRHYNCHOS; AGE AB We experimentally studied the relative importance of plumage, dominance status, and courtship behavior in determining male pairing success in the northern pintail Anas acuta and assessed whether these traits function in female choice, male-male competition or both. In an experiment (experiment 1A) that eliminated the confounding effects of male-male competition acid social courtship, females chose males with pure white breasts and colorful scapular feathers. When the same group of birds were free to interact (experiment 1B), male behavior was more important: females chose males that courted them intensely and were attentive to them, although preferred males again had whiter breasts and more colorful scapulars. In a second experiment (experiment 2), testing the effect of age on pairing success, females showed a significant preference for 2-year-old males over yearlings: 2-year-old males courted more and were more attentive to the female than yearlings; they were also more colorful than yearlings in a number of plumage measurements. Although males (in both experiments 1B and 2) were aggressive to one another while courting the female and dominant males were sometimes able to exclude subordinates from social courtship, contrary to expectation, we found no relationship between initial dominance rank and pairing success or dominance rank and age. In addition, dominance was not correlated with any of the morphological traits measured. Once chosen, however, subordinate males typically initiated fights with the higher-ranked male(s) and quickly achieved dominance. These results suggest that (1) females choose males based on a suite of morphological and behavioral characteristics, (2) male dominance relationships do not constrain active female choice, (3) a male's position in a dominance hierarchy is largely a result rather than a cause of female choice, and (4) female choice plays a more significant role than male-male competition in the evolution of several secondary sexual traits in male northern pintails. RP SORENSON, LG (reprint author), US NATL ZOOL PK,SMITHSONIAN INST,CONSERVAT & RES CTR,FRONT ROYAL,VA 22630, USA. NR 75 TC 51 Z9 52 U1 3 U2 18 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0340-5443 J9 BEHAV ECOL SOCIOBIOL JI Behav. Ecol. Sociobiol. PD DEC PY 1994 VL 35 IS 6 BP 389 EP 400 DI 10.1007/BF00165841 PG 12 WC Behavioral Sciences; Ecology; Zoology SC Behavioral Sciences; Environmental Sciences & Ecology; Zoology GA PX433 UT WOS:A1994PX43300004 ER PT J AU GLENN, TC WALLER, DR BRAUN, MJ AF GLENN, TC WALLER, DR BRAUN, MJ TI INCREASING PROPORTIONS OF URACIL IN DNA SUBSTRATES INCREASES INHIBITION OF RESTRICTION ENZYME DIGESTS SO BIOTECHNIQUES LA English DT Note ID CONTAMINATION; GLYCOSYLASE; PCR AB Techniques that rely upon the incorporation of uracil into DNA are being published with increasing frequency especially in PCR protocols. We report here the efficiency of 18 type II restriction enzymes to digest PCR amplicons synthesized with varying proportions of TTP to dUTP in the PCR mixture. We find that most enzymes with A:T/U bp in their recognition site digest the amplicons less efficiently as the percentage of dUTP in the reaction mixture is increased. This effect is most dramatic when the proportion of dUTP in the nucleotide mixture exceeds 50%. All but one of the enzymes which fail to digest amplicons that are synthesized with 100% dUTP digest some amplicons which are synthesized with 90% dUTP. RP GLENN, TC (reprint author), SMITHSONIAN INST,MRC 534,WASHINGTON,DC 20560, USA. RI Glenn, Travis/A-2390-2008 NR 8 TC 4 Z9 4 U1 0 U2 1 PU EATON PUBLISHING CO PI NATICK PA 154 E. CENTRAL ST, NATICK, MA 01760 SN 0736-6205 J9 BIOTECHNIQUES JI Biotechniques PD DEC PY 1994 VL 17 IS 6 BP 1086 EP 1090 PG 5 WC Biochemical Research Methods; Biochemistry & Molecular Biology SC Biochemistry & Molecular Biology GA PW017 UT WOS:A1994PW01700013 PM 7873177 ER PT J AU FORGET, PM MUNOZ, E LEIGH, EG AF FORGET, PM MUNOZ, E LEIGH, EG TI PREDATION BY RODENTS AND BRUCHID BEETLES ON SEEDS OF SCHEELEA PALMS ON BARRO-COLORADO ISLAND, PANAMA SO BIOTROPICA LA English DT Article DE AGOUTI; BARRO-COLORADO ISLAND; BRUCHID; PALM; PANAMA; SCHEELA-ZONENSIS; SEED PREDATION; SQUIRREL ID PARENT PALM; DISTANCE AB Predation by rodents on seeds of Scheelea zonensis was studied on Barro Colorado Island, Panama, during the latter half of this palm's fruiting season. The number of Scheelea bearing fruit declined steadily during this period. The proportion of both intact and bruchid-infested seeds among those accumulated under fruiting Scheelea declined, while the proportion of gnawed seeds increased. By early October, 87 percent of the Scheelea seeds sampled had been gnawed by rodents, and few intact or bruchid-infested seeds remained below parent palms. From August through October, agoutis, Dasyprocta punctata, visited Scheelea less and less frequently, while visits by squirrels, Sciurus granatensis, did not decline. To learn the fate of late-falling Scheelea seeds, we placed small piles of thread-marked seeds, each similar to a small Scheelea fruit crop, in the forest during three successive months, a total of 400 seed each month. Of these 1200 thread-marked seeds, 57.2 percent were retrieved within 20 m of their piles 7 days after placement. Of the retrieved seeds, 22.2 percent were gnawed within 1 m of their pile, 70.6 percent were carried between 1 and 20 m before gnawing, and 7.2 percent were cached (not gnawed, but buried in the ground or covered with litter). More seeds were gnawed, and fewer cached, in September and October than in August. On Barro Colorado Island, intense seed predation by rodents on Scheelea correlates with a previously documented forestwide low in availability of fruits of all kinds, and with a decline in egg laying by bruchids. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. RI Forget, Pierre-Michel/B-4355-2009 OI Forget, Pierre-Michel/0000-0002-9252-974X NR 31 TC 60 Z9 66 U1 1 U2 14 PU ASSN TROP BIOL PI ST LOUIS PA MISSOURI BOTANICAL GARDEN 2345 TOWER GROVE AVE, ST LOUIS, MO 63110 SN 0006-3606 J9 BIOTROPICA JI Biotropica PD DEC PY 1994 VL 26 IS 4 BP 420 EP 426 DI 10.2307/2389236 PG 7 WC Ecology SC Environmental Sciences & Ecology GA QF434 UT WOS:A1994QF43400009 ER PT J AU BEEHLER, BM AF BEEHLER, BM TI CANOPY-DWELLING HONEYEATER AGGRESSIVELY DEFENDS TERRESTRIAL NECTAR RESOURCE SO BIOTROPICA LA English DT Note DE HONEYEATER; MITRASTEMMA-YAMAMOTOI; MELIDECTES; MELIPHAGIDAE; NECTAR FEEDING; RAFFLESIACEAE; RESOURCE DEFENSE ID HAWAIIAN C1 SMITHSONIAN INST,DIV BIRDS,CONSERVAT INT,WASHINGTON,DC 20560. RP BEEHLER, BM (reprint author), SMITHSONIAN INST,WILDLIFE CONSERVAT SOC,DIV BIRDS,NHB MRC 116,WASHINGTON,DC 20560, USA. NR 14 TC 4 Z9 4 U1 1 U2 2 PU ASSN TROP BIOL PI ST LOUIS PA MISSOURI BOTANICAL GARDEN 2345 TOWER GROVE AVE, ST LOUIS, MO 63110 SN 0006-3606 J9 BIOTROPICA JI Biotropica PD DEC PY 1994 VL 26 IS 4 BP 459 EP 461 DI 10.2307/2389240 PG 3 WC Ecology SC Environmental Sciences & Ecology GA QF434 UT WOS:A1994QF43400013 ER PT J AU CODDINGTON, J SCHARFF, N AF CODDINGTON, J SCHARFF, N TI PROBLEMS WITH ZERO-LENGTH BRANCHES SO CLADISTICS-THE INTERNATIONAL JOURNAL OF THE WILLI HENNIG SOCIETY LA English DT Editorial Material ID CLADISTIC-ANALYSIS; CHARACTER C1 ZOOL MUSEUM,DEPT ENTOMOL,DK-2100 COPENHAGEN,DENMARK. RP CODDINGTON, J (reprint author), SMITHSONIAN INST,NATL MUSEUM NAT HIST,DEPT ENTOMOL,WASHINGTON,DC 20560, USA. RI Scharff, Nikolaj/A-4787-2013 OI Scharff, Nikolaj/0000-0001-6809-2878 NR 16 TC 145 Z9 146 U1 0 U2 2 PU ACADEMIC PRESS (LONDON) LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0748-3007 J9 CLADISTICS JI Cladistics-Int. J. Willi Hennig Soc. PD DEC PY 1994 VL 10 IS 4 BP 415 EP 423 PG 9 WC Evolutionary Biology SC Evolutionary Biology GA TJ919 UT WOS:A1994TJ91900004 ER PT J AU MEGGERS, BJ AF MEGGERS, BJ TI ARCHAEOLOGICAL EVIDENCE FOR THE IMPACT OF MEGA-NINO EVENTS ON AMAZONIA DURING THE PAST 2 MILLENNIA SO CLIMATIC CHANGE LA English DT Article ID EL-NINO; GENETIC-VARIATION; YANOMAMA INDIANS; FOREST FIRES; POPULATION; VENEZUELA; HISTORY; CLIMATE; BRAZIL; TRIBES AB Recent recognition of teleconnections between El Nino and climatic anomalies elsewhere on the planet identify northern lowland South America as a region experiencing drought. Extensive archeological survey along the major tributaries of the Amazon during the past 15 years has defined the temporal and spatial distributions of numerous ceramic phases and traditions. An unexpected result has been identification of discontinuities in most local sequences. Large numbers of carbon-14 dates establish their contemporaneity ca. 1500, 1000, 700, and 400 B.P. These dates correlate closely with archeological evidence on the north coast of Peru for destructive mega-Nino events. Observations of the impact of milder recent episodes on the flora and fauna imply catastrophic deterioration in local subsistence resources during prehistoric events, forcing the repeated human dispersals reflected in the linguistic and genetic heterogeneity of surviving indigenous lowland South American populations. RP MEGGERS, BJ (reprint author), SMITHSONIAN INST,NHB-112,WASHINGTON,DC 20560, USA. NR 91 TC 104 Z9 110 U1 0 U2 12 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 DEC PY 1994 VL 28 IS 4 BP 321 EP 338 DI 10.1007/BF01104077 PG 18 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA PU502 UT WOS:A1994PU50200002 ER PT J AU PIPERNO, DR AF PIPERNO, DR TI ON THE EMERGENCE OF AGRICULTURE IN THE NEW-WORLD SO CURRENT ANTHROPOLOGY LA English DT Letter RP PIPERNO, DR (reprint author), SMITHSONIAN TROP RES INST,UNIT 0948,APARTADO 2070,BALBOA,PANAMA. NR 0 TC 13 Z9 14 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0011-3204 J9 CURR ANTHROPOL JI Curr. Anthropol. PD DEC PY 1994 VL 35 IS 5 BP 637 EP 639 DI 10.1086/204324 PG 3 WC Anthropology SC Anthropology GA PR301 UT WOS:A1994PR30100010 ER PT J AU MORGAN, SG CHRISTY, JH AF MORGAN, SG CHRISTY, JH TI PLASTICITY, CONSTRAINT, AND OPTIMALITY IN REPRODUCTIVE TIMING SO ECOLOGY LA English DT Article DE HATCHING RHYTHMS; LARVAL RELEASE; PLASTICITY; PREDATION; TIDES ID ESTUARINE CRAB LARVAE; ADAPTIVE SIGNIFICANCE; HATCHING RHYTHMS; NORTH-CAROLINA; REACTION NORMS; UCA-PUGILATOR; FIDDLER CRABS; RELEASE; CYCLES; FISHES AB Synchronous release of gametes or larvae by marine animals may be controlled by as many as four environmental cycles thereby enabling an array of reproductive timing patterns. Cohesive scenarios that account for the diversity of reproductive patterns are rare and tests of their adaptive significance have been even rarer. By exploiting plasticity in the timing of larval release, we isolated proximate factors regulating reproductive synchrony and provided evidence that predation ultimately may best explain the diversity of hatching patterns by brachyuran crabs. Tides entrain reproductive rhythms by many crabs, and therefore spatial and temporal variation in tides produces intraspecific variation in reproductive patterns. This was demonstrated by determining the timing of larval release of the same or sibling species of intertidal crabs in Pacific semidiurnal and Caribbean mixed semidiurnal tidal regimes on the two coasts of the Republic of Panama. The time of larval release varied during the year in the Caribbean, where entraining physical cycles exhibited complicated changes in phase, but not along the Pacific coast, where the phase relationships among physical cycles varied little year-round. Crabs timed larval release relative to the light-dark, tidal phase, and tidal amplitude cycles, but not the lunar cycle, suggesting that three rhythms determined when larvae were released. For each species we ranked these rhythms by the degree to which larval release kept phase with their entraining physical cycles. The species-specific hierarchies of rhythms we observed match those expected if the time of larval release minimizes predation on females, embryos, and newly hatched larvae. Such hierarchies enable crabs to track phase shifts of cycles in variable tidal environments and may enhance reproductive success across tidal regimes. However, larval release may be timed better in some tidal regimes than others due to differences in the phasing of environmental cycles. In some tidal regimes, larval release cannot be synchronized with all three physical cycles during the year, and hierarchies of rhythms may determine the timing and duration of breeding. C1 SMITHSONIAN TROP RES INST,BALBOA,PANAMA. NR 34 TC 73 Z9 73 U1 2 U2 22 PU ECOLOGICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE, NW, STE 400, WASHINGTON, DC 20036 SN 0012-9658 J9 ECOLOGY JI Ecology PD DEC PY 1994 VL 75 IS 8 BP 2185 EP 2203 DI 10.2307/1940876 PG 19 WC Ecology SC Environmental Sciences & Ecology GA PW554 UT WOS:A1994PW55400003 ER PT J AU He, FL Legendre, P Bellehumeur, C LaFrankie, JV AF He, Fangliang Legendre, Pierre Bellehumeur, Claude LaFrankie, James V. TI Diversity pattern and spatial scale: a study of a tropical rain forest of Malaysia SO ENVIRONMENTAL AND ECOLOGICAL STATISTICS LA English DT Article DE fractal dimension; richness; scale; Shannon diversity; spatial structure; tree density; variogram AB Scale is emerging as one of the critical problems in ecology because our perception of most ecological variables and processes depends upon the scale at which the variables are measured. A conclusion obtained at one scale may not be valid at another scale without sufficient knowledge of the sealing effect, which is also a source of misinterpretation for many ecological problems, such as the design of reserves in conservation biology. This paper attempts to study empirically how scaling may affect the spatial patterns of diversity (tree density, richness and Shannon diversity) that we may perceive in tropical forests, using as a test-case a 50 ha forest plot in Malaysia. The effect of scale on measurements of diversity patterns, the occurrence of rare species, the fractal dimension of diversity patterns, the spatial structure and the nearest-neighbour autocorrelation of diversity are addressed. The response of a variable to scale depends on the way it is measured and the way it is distributed in space. We conclude that, in general, the effect of scaling on measures of biological diversity is non-linear; heterogeneity increases with the size of the sampling units, and fine-scale information is lost at a broad scale. Our results should lead to a better understanding of how ecological variables and processes change over scale. C1 [He, Fangliang; Legendre, Pierre; Bellehumeur, Claude] Univ Montreal, Dept Sci Biol, Montreal, PQ H3C 3J7, Canada. [LaFrankie, James V.] Smithsonian Trop Res Inst, Balboa, Panama. RP He, FL (reprint author), Univ Montreal, Dept Sci Biol, CP 6128 Succursale Ctr Ville, Montreal, PQ H3C 3J7, Canada. FU National Science Foundation (USA) BSR Grant [INT-84-12201]; Conservation, Food and Health Foundation, Inc. (USA); United Nations, through the Man and the Biosphere programme, UNESCO-MAB grants [217.651.5, 217.652.5, 243.027.6, 213.164.4]; United Nations, through the Man and the Biosphere programme, UNESCO-ROSTSEA grant [243.170.6]; NSERC [OGP0007738] FX The large-scale forest plot at the Pasoh Forest Reserve is an ongoing project of the Malaysian Government, directed by the Forest Research Institute of Malaysia through its Director-General, Datuk Dr Salleh Nor, under the leadership of N. Manokaran, Peter S. Ashton, and Stephen P. Hubbell. Mr K. Kochummen supervised the initial identification of trees while a Senior Fellow at the Smithsonian Tropical Research Institute. Supplemental funds from the following sources are gratefully acknowledged: National Science Foundation (USA) BSR Grant No. INT-84-12201 to Harvard University through Peter S. Ashton and Stephen P. Hubbell; Conservation, Food and Health Foundation, Inc. (USA); United Nations, through the Man and the Biosphere programme, UNESCO-MAB grants nos. 217.651.5, 217.652.5, 243.027.6, 213.164.4, and also UNESCO-ROSTSEA grant no. 243.170.6; NSERC grant No. OGP0007738 to P. Legendre. NR 62 TC 43 Z9 51 U1 1 U2 7 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1352-8505 EI 1573-3009 J9 ENVIRON ECOL STAT JI Environ. Ecol. Stat. PD DEC PY 1994 VL 1 IS 4 BP 265 EP 286 DI 10.1007/BF00469425 PG 22 WC Environmental Sciences; Mathematics, Interdisciplinary Applications; Statistics & Probability SC Environmental Sciences & Ecology; Mathematics GA V31TN UT WOS:000208906000001 ER EF