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  • Chemistry  (10,474)
  • Engineering General  (686)
  • Biochemistry and Biotechnology  (670)
  • Humans  (564)
  • ASTROPHYSICS
  • FLUID MECHANICS AND HEAT TRANSFER
  • Fisheries
  • LUNAR AND PLANETARY EXPLORATION
  • Surface physics, nanoscale physics, low-dimensional systems
  • 2020-2022
  • 2005-2009
  • 1995-1999  (11,731)
  • 1990-1994
  • 1985-1989
  • 1996  (11,731)
Collection
Keywords
Publisher
Years
  • 2020-2022
  • 2005-2009
  • 1995-1999  (11,731)
  • 1990-1994
  • 1985-1989
Year
  • 1
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    Studies of plasma flow past Jupiter's satellite Io (1996)
    In:  CASI
    Details
    Publication Date: 2019-07-20
    Description: We have investigated the interaction of Io, Jupiter's innermost Galilean satellite, with the Io plasma torus. The interaction of Io with the plasma surrounding it has been a subject of interest for almost 30 years, dating from the discovery by Bigg (1964) that radio emissions from the Jovian magnetosphere are controlled by Io's position. Since that time, both ground-based and spacecraft observations have shown that Io is a unique satellite that influences the Jovian magnetosphere in important ways. In particular, material from Io is a major source of plasma for the magnetosphere, and the energy that this plasma harnesses from Jupiter's co-rotating magnetic field is an important power source for the magnetosphere. It is apparent that the local interaction of the torus plasma with Io plays a key role in the formation, composition, and energetics of the Io torus; the interaction is also highly nonlinear. We have modeled this interaction using time-dependent three-dimensional magnetohydrodynamic (MHD) simulations. During this past year, we have used NASA support to develop a new MHD code to study the interaction. As part of the Galileo spacecraft's recent successful insertion into orbit around Jupiter, the spacecraft passed within 900 km of Io's surface. Our calculations have focused on using Galileo particles and fields data to examine a question that was not resolved by the Voyager observations: Does Io have an intrinsic magnetic field? In this progress summary, we describe our efforts on this problem to date.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CR-200134 , NAS 1.26:200134 , SAIC-95/1381:APPAT-174 , NIPS-96-07877
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    NASA TECHNICAL REPORTS
  • 2
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    Results and current status of the NPARC alliance validation effort (1996)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The NPARC Alliance is a partnership between the NASA Lewis Research Center (LeRC) and the USAF Arnold Engineering Development Center (AEDC) dedicated to the establishment of a national CFD capability, centered on the NPARC Navier-Stokes computer program. The three main tasks of the Alliance are user support, code development, and validation. The present paper is a status report on the validation effort. It describes the validation approach being taken by the Alliance. Representative results are presented for laminar and turbulent flat plate boundary layers, a supersonic axisymmetric jet, and a glancing shock/turbulent boundary layer interaction. Cases scheduled to be run in the future are also listed. The archive of validation cases is described, including information on how to access it via the Internet.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-TM-107134 , NAS 1.15:107134 , E-10064 , AIAA PAPER 96-0387 , NIPS-96-08124 , Aerospace Sciences Meeting and Exhibit; Jan 15, 1996 - Jan 18, 1996; Reno, NV; United States
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    NASA TECHNICAL REPORTS
  • 3
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    Progress report for the Monte-Carlo gamma-ray spectrum simulation program BSIMUL (1996)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The progress made during 1995 on the Monte-Carlo gamma-ray spectrum simulation program BSIMUL is discussed. Several features have been added, including the ability to model shields that are tapered cylinders. Several simulations were made on the Near Earth Asteroid Rendezvous detector.
    Keywords: ASTROPHYSICS
    Type: NASA-CR-200089 , NAS 1.26:200089 , NIPS-96-07659
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    NASA TECHNICAL REPORTS
  • 4
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    Research activities in nuclear astrophysics and related areas (1996)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: NASA/GRO grant NAG 5-2081, at the University of Chicago, has provided support for a broad program of theoretical research in nuclear astrophysics and related areas, with regard to gamma-ray and hard X-ray emission from classical nova explosions. This research emphasized the possible detection of 22Na gamma-ray line emission from nearby novae involving ONeMg white dwarfs, the detailed examination of 26Al production in novae, and the possible detection of the predicted early gamma ray emission from novae that arises from the decay of the short lived, positron emitting isotopes of CNO elements. Studies of nova related problems have consumed an increasing fraction of the Principal Investigator's research efforts over the past decade. Current research addresses problems associated with the standard model for the outbursts of the classical novae: the occurrence of thermonuclear runaways (TNR) in the accreted hydrogen rich envelopes on white dwarfs in close binary systems (see, e.g., the reviews by Truran 1982; and Shara 1989). Research in progress and planned for the next three years has three main objectives: (1) to gain an improved understanding of the early evolution of the light curves of, particularly, the fastest novae; (2) to gain an improved understanding of the relative importance of the various possible mechanisms of envelope hydrogen depletion (e.g. winds, common envelope driven mass loss, and nuclear burning) to the long term evolution of novae in outburst; and (3) to seek to provide a somewhat more definitive statement of the role of classical novae in nucleosynthesis. Our proposed 2-D studies of convection during the early phases of the TNR and our systematic attempt to incorporate an improved treatment of radiation hydrodynamics into the hydrodynamic code utilized in our calculations, are particularly relevant to the first of these objectives. Further 2-D studies of the effects of common envelope evolution are intended to provide more realistic constraints on the mass depletion mechanisms. Finally, detailed calculations of the thermonuclear history of the matter ejected in novae will be carried out for representative nova configurations involving both carbon-oxygen (CO) and oxygen-neon-magnesium (ONeMg) white dwarfs.
    Keywords: ASTROPHYSICS
    Type: NASA-CR-200193 , NAS 1.26:200193 , NIPS-96-08389
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    NASA TECHNICAL REPORTS
  • 5
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    Observations and analysis activities of the International Ultraviolet Explorer satellite telescope (1996)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The funds from this grant were used to support observations and analysis with the International Ultraviolet Explorer (IUE) satellite telescope. The main area of scientific research concerned the variability analyses of ultraviolet spectra of Active Galactic Nuclei, primarily quasars, Seyfert galaxies, and BL Lacertae objects. The Colorado group included, at various times, the P.I. (J.M. Shull), Research Associate Dr. Rick Edelson, and graduate students Jon Saken, Elise Sachs, and Steve Penton. A portion of the work was also performed by CU undergraduate student Cheong-ming Fu. A major product of the effort was a database of all IUE spectra of active galactic nuclei. This database is being analyzed to obtain spectral indices, line fluxes, and continuum fluxes for over 500 AGN. As a by-product of this project, we implemented a new, improved technique of spectral extraction of IUE spectra, which has been used in several AGN-WATCH campaigns (on the Seyfert galaxy NGC 4151 and on the BL Lac object PKS 2155-304).
    Keywords: ASTROPHYSICS
    Type: NASA-CR-200196 , NAS 1.26:200196 , NIPS-96-08385
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    NASA TECHNICAL REPORTS
  • 6
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    Baltimore to head new vaccine panel (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2005.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984656" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines ; Acquired Immunodeficiency Syndrome/*prevention & control ; History, 20th Century ; Humans ; National Institutes of Health (U.S.)/*organization & administration ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 7
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    Complexities in the treatment of autoimmune disease (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McFarland, H F -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2037-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Neuroimmunology Branch, National Institutes of Health, Bethesda, MD 20892, USA. henrymcf@helix.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984662" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; Autoimmune Diseases/immunology/*therapy ; CD8-Positive T-Lymphocytes/*immunology ; Callithrix ; Cytokines/*immunology ; Diabetes Mellitus, Type 1/immunology/therapy ; Encephalomyelitis, Autoimmune, Experimental/immunology/therapy ; Humans ; Immune Tolerance ; Immunotherapy/*adverse effects ; Mice ; Myelin Proteins ; Myelin-Associated Glycoprotein/immunology ; Myelin-Oligodendrocyte Glycoprotein ; Ovalbumin/immunology ; Th1 Cells/*immunology ; Th2 Cells/*immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 8
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    Association of Src tyrosine kinase with a human potassium channel mediated by SH3 domain (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: The human Kv1.5 potassium channel (hKv1.5) contains proline-rich sequences identical to those that bind to Src homology 3 (SH3) domains. Direct association of the Src tyrosine kinase with cloned hKv1.5 and native hKv1.5 in human myocardium was observed. This interaction was mediated by the proline-rich motif of hKv1.5 and the SH3 domain of Src. Furthermore, hKv1.5 was tyrosine phosphorylated, and the channel current was suppressed, in cells coexpressing v-Src. These results provide direct biochemical evidence for a signaling complex composed of a potassium channel and a protein tyrosine kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holmes, T C -- Fadool, D A -- Ren, R -- Levitan, I B -- F32 NS009952/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2089-91.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02254, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8953041" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cloning, Molecular ; Humans ; Kv1.5 Potassium Channel ; Molecular Sequence Data ; Myocardium/chemistry ; Oncogene Protein pp60(v-src)/metabolism ; Patch-Clamp Techniques ; Phosphorylation ; Phosphotyrosine/metabolism ; Potassium Channels/chemistry/*metabolism ; *Potassium Channels, Voltage-Gated ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Transfection ; src Homology Domains/*physiology ; src-Family Kinases/chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 9
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    Fraud and ethics charges hit stroke drug trial (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Enserink, M -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):2004-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984655" target="_blank"〉PubMed〈/a〉
    Keywords: Aspirin/*therapeutic use ; Brain Diseases ; Cerebrovascular Disorders/*prevention & control ; Controlled Clinical Trials as Topic/*standards ; Dipyridamole/*therapeutic use ; Drug Therapy, Combination ; Ethics Committees, Research ; *Ethics, Medical ; Europe ; Humans ; Multicenter Studies as Topic ; Placebos ; Platelet Aggregation Inhibitors/*therapeutic use ; Recurrence ; Scientific Misconduct
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 10
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    Breakthroughs of the year, 1996 (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bloom, F E -- New York, N.Y. -- Science. 1996 Dec 20;274(5295):1987.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8984651" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-HIV Agents/*therapeutic use ; Apoptosis ; Embryonic and Fetal Development ; HIV/*pathogenicity ; *HIV Infections/drug therapy/virology ; Humans ; Receptors, Cytokine/*physiology ; Receptors, HIV/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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