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  • ASTROPHYSICS  (462)
  • LUNAR AND PLANETARY EXPLORATION  (327)
  • Animals  (223)
  • 2010-2014
  • 1990-1994  (549)
  • 1980-1984  (463)
  • 1993  (549)
  • 1984  (463)
Collection
Keywords
Publisher
Years
  • 2010-2014
  • 1990-1994  (549)
  • 1980-1984  (463)
Year
  • 1
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    Giant panda paternity (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, S J -- Goldman, D -- Knight, J -- Moore, H D -- Wildt, D E -- Bush, M -- Montali, R J -- Kleiman, D -- New York, N.Y. -- Science. 1984 Mar 16;223(4641):1127-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701515" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carnivora ; Male ; *Paternity ; Polymorphism, Genetic ; Proteins/analysis
    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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  • 2
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    Detection of the J-10 Manifold of the Pure Rotational Band of Phosphine on Saturn (1984)
    In:  CASI
    Details
    Publication Date: 2014-09-17
    Description: The detection of the J = 10 manifold of the pure rotational band of PH3 on Saturn is reported. The observations were made from the far-infrared cooled grating spectrometer. The wavelengths and observed brightness temperatures for the full disk plus rings are 89 + or - 3 K at 97.04 micrometer, 77 + or - 3 K at 102.72 micrometer, 77 + or - 3 K at 102.94 micrometer, and 83 + or - 3 K at 105.12 micrometers. The points of 97.04 and 105.12 micrometers establish the continuum level and the two points near 103 micrometers measure the depth of the PH3 manifold. After the flux due to the rings is subtracted, the depth of the feature is 16 + or - 6 K relative to the nearby 102 K continuum. These results are compared to theoretical models which parameterize the PH3 mixing ratio as x = x sub zero (P/P sub zero)(alpha) for P P sub zero and as x = x sub zero for P or = P, where P is the total pressure and alpha = H/h is the ratio of the dynamical scale height (H) and the scale height for decreasing the PH3 mixing ratio (h). The parameters x sub zero, P sub zero, and h were varied, as well as the H/He mixing ratio and the pressure-temperature profile. The data are well fitted using pressure-temperature profiles. The preferred values of h, P sub zero, and x sub zero imply that there is little or no PH3 above the thermal inversion and that the mixing ratio below the inversion is consistent with PH3 being 1 to 4 times overabundant relative to the solar P/H ratio.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Airborne Astron. Symp.; p 76-80
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    NASA TECHNICAL REPORTS
  • 3
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    A Study of Saturn's E-Ring Particles Using the Voyager 1 Plasma Wave Instrument (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The flyby of Voyager 1 at Saturn resulted in the detection of a large variety of plasma waves, e.g., chorus, hiss, and electron cyclotron harmonics. Just before the outbound equator crossing, at about 6.1 R(sub s), the Voyager 1 plasma wave instrument detected a strong, well-defined low-frequency enhancement. Initially it was suggested that plasma waves might be responsible for the spectral feature but more recently dust was suggested as at least a partial contributor to the enhancement. In this report we present evidence which supports the conclusion that dust contributes to the low-frequency enhancement. A new method has been used to derive the dust impact rate. The method relies mainly on the 16-channel spectrum analyzer data. The few wide band waveform observations available (which have been used to study dust impacts during the Voyager 2 ring plane crossing) were useful for calibrating the impact rate from the spectrum analyzer data. The mass and, hence, the size of the dust particles were also obtained by analyzing the response of the plasma wave spectrum analyzer. The results show that the region sampled by Voyager 1 is populated by dust particles that have rms masses of up to few times 10(exp -11) g and sizes of up to a few microns. The dust particle number density is on the order of 10(exp -3) m(exp 3). The optical depth of the region sampled by the spacecraft is 1.04 x 10(exp -6). The particle population is centered about 2500 km south of the equatorial plane and has a north-south thickness of about 4000 km. Possible sources of these particles are the moons Enceladus and Tethys whose orbits lie within the E-ring radial extent. These results are in reasonable agreement with photometric studies and numerical simulations.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CR-194694 , NAS 1.26:194694 , U-OF-IOWA-93-19
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    NASA TECHNICAL REPORTS
  • 4
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    EGRET observations of active galactic nuclei - 0836 + 710, 0454 - 234, 0804 + 499, 0906 + 430, 1510-089, and 2356 + 196 (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory observed high-energy gamma rays (50 - 2000 MeV) from quasar 0836 + 710 (z = 2.16) during observations in 1992 January, near the time of an optical fare (von Linde et al., 1993). The gamma-ray spectrum can be fitted with a power law with photon number index 2.4 +/- 0.2. EGRET identifies quasars 0454 - 234, 0804 + 499, 0906 + 430, 1510 - 089, and 2356 + 196 at a statistical significance of between 4 and 5 standard deviations.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X); 415; 1; p. L13-L16.
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    NASA TECHNICAL REPORTS
  • 5
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    WT1-mediated growth suppression of Wilms tumor cells expressing a WT1 splicing variant (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-24
    Description: A human Wilms tumor cell line (RM1) was developed to test the tumor suppressor activity of WT1, a zinc finger transcription factor that is expressed in the developing human kidney and is mutationally inactivated in a subset of Wilms tumors. Transfection of each of four wild-type WT1 isoforms suppressed the growth of RM1 cells. The endogenous WT1 transcript in these cells was devoid of exon 2 sequences, a splicing alteration that was also detected in varying amounts in all Wilms tumors tested but not in normal kidney. Production of this abnormal transcript, which encodes a functionally altered protein, may represent a distinct mechanism for inactivating WT1 in Wilms tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Haber, D A -- Park, S -- Maheswaran, S -- Englert, C -- Re, G G -- Hazen-Martin, D J -- Sens, D A -- Garvin, A J -- CA37887/CA/NCI NIH HHS/ -- CA58596/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Dec 24;262(5142):2057-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Genetics, Massachusetts General Hospital Cancer Center, Boston 02129.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266105" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Division/genetics ; DNA-Binding Proteins/biosynthesis/*genetics/physiology ; Genes, Wilms Tumor/genetics/*physiology ; Humans ; Mice ; Mice, Nude ; Molecular Sequence Data ; Neoplasm Transplantation ; RNA, Messenger/genetics ; Tumor Cells, Cultured ; WT1 Proteins ; Wilms Tumor/*genetics/*pathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    The crystal structure of lysin, a fertilization protein (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-12-17
    Description: Lysin, a protein from abalone sperm, creates a hole in the envelope of the egg, permitting the sperm to pass through the envelope and fuse with the egg. The structure of lysin, refined at 1.9 angstroms resolution, reveals an alpha-helical, amphipathic molecule. The surface of the protein exhibits three features: two tracks of basic residues that span the length of the molecule, a solvent-exposed cluster of aromatic and aliphatic amino acids, and an extended amino-terminal hypervariable domain that is species-specific. The structure suggests possible mechanisms of action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shaw, A -- McRee, D E -- Vacquier, V D -- Stout, C D -- HD12986/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1993 Dec 17;262(5141):1864-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Scripps Research Institute, La Jolla, CA 92037-1093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8266073" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Computer Graphics ; Crystallography, X-Ray ; Models, Molecular ; Molecular Sequence Data ; Mollusca ; Mucoproteins/*chemistry/metabolism ; Protein Structure, Secondary ; Vitelline Membrane/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Mutation of unique region of Bruton's tyrosine kinase in immunodeficient XID mice (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-07-16
    Description: The cytoplasmic tyrosine kinase, Bruton's tyrosine kinase (Btk, formerly bpk or atk), is crucial for B cell development. Loss of kinase activity results in the human immunodeficiency, X-linked agammaglobulinemia, characterized by a failure to produce B cells. In the murine X-linked immunodeficiency (XID), B cells are present but respond abnormally to activating signals. The Btk gene, btk, was mapped to the xid region of the mouse X chromosome by interspecific backcross analysis. A single conserved residue within the amino terminal unique region of Btk was mutated in XID mice. This change in xid probably interferes with normal B cell signaling mediated by Btk protein interactions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rawlings, D J -- Saffran, D C -- Tsukada, S -- Largaespada, D A -- Grimaldi, J C -- Cohen, L -- Mohr, R N -- Bazan, J F -- Howard, M -- Copeland, N G -- AR36834/AR/NIAMS NIH HHS/ -- N01-CO-74101/CO/NCI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jul 16;261(5119):358-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Molecular Genetics, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8332901" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; B-Lymphocytes/*enzymology/immunology ; Base Sequence ; Cell Line ; Chromosome Mapping ; Crosses, Genetic ; Exons ; Female ; Genetic Linkage ; Immunologic Deficiency Syndromes/enzymology/*genetics/immunology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Inbred CBA ; Mice, Inbred DBA ; Mice, Mutant Strains ; Molecular Sequence Data ; Protein-Tyrosine Kinases/chemistry/*genetics/metabolism ; *X Chromosome
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Autoimmunity and increased c-myb transcription (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-30
    Description: A single recessive gene, lpr, induces an autoimmune-lymphoproliferative syndrome in several strains of mice. The lymphoid organs of lpr/lpr mice contained cells with increased amounts of myb RNA, which codes for a protein found in the nucleus. A similar human lymphoproliferative disorder also had an increase in c-myb expression. Mouse T cells induced by mitogens to proliferate did not express large amounts of myb RNA, indicating that marked myb expression is not a general feature of lymphocyte activation and proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mountz, J D -- Steinberg, A D -- Klinman, D M -- Smith, H R -- Mushinski, J F -- New York, N.Y. -- Science. 1984 Nov 30;226(4678):1087-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6494925" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoantibodies/*genetics ; Autoimmune Diseases/*genetics ; Female ; *Genes, Recessive ; Lymphocytes/immunology ; Lymphoproliferative Disorders/*genetics ; Mice ; Mice, Inbred Strains ; Nucleic Acid Hybridization ; *Oncogenes ; Species Specificity ; Spleen/immunology ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Epidermal growth factor immunoreactive material in the central nervous system: location and development (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-06-08
    Description: Epidermal growth factor (EGF) is a potent mitogen with hormonal activity in the gastrointestinal tract. Material cross-reacting with EGF was detected in the central nervous system of the developing and adult albino rat by the indirect immunofluorescence technique. High concentrations of EGF-cross-reacting material were identified in forebrain and midbrain structures of pallidal areas of the brain. These include the globus pallidus, ventral pallidum, entopeduncular nucleus, substantia nigra pars reticulata, and the islands of Calleja . Thus, EGF may represent another gut-brain peptide with potential neurotransmitter-neuromodulator functions in pallidal structures of the extrapyramidal motor systems of the brain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fallon, J H -- Seroogy, K B -- Loughlin, S E -- Morrison, R S -- Bradshaw, R A -- Knaver, D J -- Cunningham, D D -- GM31609/GM/NIGMS NIH HHS/ -- NS16017/NS/NINDS NIH HHS/ -- NS19964/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Jun 8;224(4653):1107-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6144184" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/growth & development/*physiology ; Epidermal Growth Factor/*physiology ; Fluorescent Antibody Technique ; Globus Pallidus/physiology ; Mitogens/physiology ; Neurotransmitter Agents/physiology ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Hypoxic coordinate regulation of mitochondrial enzymes in mammalian cells (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-02-17
    Description: The effect of hypoxic exposure on various mitochondrial enzymes and on cell mitochondrial genomic content was studied in two types of mammalian cells. Hypoxia depressed the activity of six enzymes to the same degree. The kinetics of depression and of recovery during reexposure to normoxia were statistically similar for three marker enzymes. Despite the global and symmetrical decrease in enzyme activities, mitochondrial DNA remained constant. This suggests either symmetrical loss of mitochondrial enzymes from all mitochondria or complete loss of enzymes from a subpopulation of mitochondria with retention of an intact mitochondrial genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murphy, B J -- Robin, E D -- Tapper, D P -- Wong, R J -- Clayton, D A -- 5 R01 HL23701-14/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1984 Feb 17;223(4637):707-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6320368" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Anaerobiosis ; Animals ; Anoxia/physiopathology ; Citrate (si)-Synthase/genetics/*metabolism ; DNA, Mitochondrial/*genetics ; Electron Transport Complex IV/genetics/*metabolism ; Macrophages/*enzymology ; Mice ; Mitochondria/*enzymology ; Mitochondria, Muscle/*enzymology ; Oxidoreductases/genetics/*metabolism ; Oxo-Acid-Lyases/*metabolism ; Rats
    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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