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  • ASTROPHYSICS  (145)
  • Humans  (49)
  • Life and Medical Sciences  (49)
  • 1980-1984  (243)
  • 1970-1974
  • 1981  (243)
  • 11
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    Male vole urine changes luteinizing hormone-releasing hormone and norepinephrine in female olfactory bulb (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-01
    Description: Female prairie voles (Microtus ochrogaster) exposed to a single drop of male urine on the upper lip showed changes in concentrations of luteinizing hormone-releasing hormone (LHRH) and norepinephrine in olfactory bulb tissue; no such changes occurred in dopamine concentration. The changes were measured in the posterior but not the anterior olfactory bulb tissue of females within 1 hour after they were exposed to urine. These females also showed rapid increases in serum concentrations of luteinizing hormone. Females exposed to water on the upper lip showed none of these changes. These results suggest that in this species LHRH and norepinephrine in the olfactory bulb may mediate luteinizing hormone release in response to external (pheromonal) chemical cues.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dluzen, D E -- Ramirez, V D -- Carter, C S -- Getz, L L -- HDO9328/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1981 May 1;212(4494):573-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7010608" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arvicolinae/*physiology ; Estrus ; Female ; Gonadotropin-Releasing Hormone/*metabolism ; Humans ; Luteinizing Hormone/blood ; Male ; Norepinephrine/*metabolism ; Olfactory Bulb/*metabolism ; Pheromones/*urine ; Pregnancy ; Reproduction ; Rodentia/*physiology ; Stress, Psychological/physiopathology
    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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  • 12
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    Speech perception without traditional speech cues (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-22
    Description: A three-tone sinusoidal replica of a naturally produced utterance was identified by listeners, despite the readily apparent unnatural speech quality of the signal. The time-varying properties of these highly artificial acoustic signals are apparently sufficient to support perception of the linguistic message in the absence of traditional acoustic cues for phonetic segments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Remez, R E -- Rubin, P E -- Pisoni, D B -- Carrell, T D -- HD-01994/HD/NICHD NIH HHS/ -- MH 24027/MH/NIMH NIH HHS/ -- MH 32848/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1981 May 22;212(4497):947-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233191" target="_blank"〉PubMed〈/a〉
    Keywords: Auditory Perception/physiology ; Humans ; *Phonetics ; Speech Perception/*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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  • 13
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    High levels of intracellular bombesin characterize human small-cell lung carcinoma (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-11
    Description: "Small cells" or "oat cells" characterize a virulent form of lung cancer and share many biochemical properties with peptide-secreting neurones. The neuropeptide bombesin is present in all small-cell lines examined, but not in other lung cancer cell lines, suggesting that bombesinergic precursor cells in lung may give rise to this disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moody, T W -- Pert, C B -- Gazdar, A F -- Carney, D N -- Minna, J D -- New York, N.Y. -- Science. 1981 Dec 11;214(4526):1246-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6272398" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/analysis ; Bombesin/*analysis ; Carcinoma, Small Cell/*analysis ; Carcinoma, Squamous Cell/analysis ; Cell Line ; Humans ; Lung Neoplasms/*analysis ; Mesothelioma/analysis ; Peptides/*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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  • 14
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    A photobiological evaluation of tanning booths (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-01-23
    Description: The use of tanning booths as a substitute for natural sunlight is becoming increasingly popular. However, unless careful attention is paid to proper design and maintenance, the radiation field inside a tanning booth can be highly anisotropic. The use of simple, inexpensive ultraviolet radiation meters to measure dosage can lead to serious overexposure. Since the ultraviolet radiation inside a tanning booth has a greater proportion of short wavelengths (less than 300 nanometers) than natural sunlight, the amount of skin cancer-inducing radiation received for a tan may be twice that received for a natural suntan.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nachtwey, D S -- Rundel, R D -- New York, N.Y. -- Science. 1981 Jan 23;211(4480):405-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7221547" target="_blank"〉PubMed〈/a〉
    Keywords: Dose-Response Relationship, Radiation ; Erythema/etiology ; Humans ; *Light ; Photometry ; Skin/*radiation effects ; Sunburn/*etiology ; Time Factors ; *Ultraviolet Rays
    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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  • 15
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    Helical mycoplasmas (spiroplasmas) from Ixodes ticks (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-29
    Description: A new spiroplasma isolated from Ixodes pacificus collected in Oregon was serologically and morphologically distinct from known spiroplasmas. The new spiroplasma could also be isolated in tick cell cultures. Discovery of a new fastidious mycoplasma in ticks offers opportunities to explore the possible role of these agents in human and animal diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tully, J G -- Rose, D L -- Yunker, C E -- Cory, J -- Whitcomb, R F -- Williamson, D L -- New York, N.Y. -- Science. 1981 May 29;212(4498):1043-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233197" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; Mycoplasma/*isolation & purification/pathogenicity/ultrastructure ; Ticks/*microbiology
    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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  • 16
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    Age determination of the Shanidar 3 Neanderthal (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-01
    Description: Close agreement between the age at death estimated by macroscopic and microscopic methods was obtained for the Shanidar 3 Neanderthal. This suggests the possibility of obtaining age at death estimates by microscopic methods in other fossil hominids where the skeletal remains are highly fragmentary and macroscopic methods are not applicable.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thompson, D D -- Trinkaus, E -- New York, N.Y. -- Science. 1981 May 1;212(4494):575-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6782677" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Bone and Bones/*cytology ; *Fossils ; Haplorhini/*anatomy & histology ; History, Ancient ; Humans ; *Paleontology
    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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  • 17
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    Solar flare observations and their interpretations (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A solar flare has a characteristic spatial extent of 10,000 to 100,000 km. It develops rapidly, with a characteristic time scale of 100 to 1000 s but its manifestations can be observed for hours after onset. A solar flare is the source of highly energetic particles with energies that extend into the GeV range; it produces copious amounts of electromagnetic radiation from gamma-rays to wavelengths of 10 km; and it produces violent magnetohydrodynamic phenomena such as shocks and fast mass ejections. The three basic phases of a flare are described and are: the precursor (preflare) phase, lasting for minutes to hours; the flash phase, lasting for 1 to 5 minutes; and the main (gradual) phase, lasting, on occasion, for hours.
    Keywords: ASTROPHYSICS
    Type: NASA. Goddard Space Flight Center The Sun as a Star; p 181-227
    Format: text
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  • 18
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    Solar wind electron densities from Viking dual-frequency radio measurements (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Simultaneous phase coherent, two-frequency measurements of the time delay between the earth station and the Viking spacecraft have been analyzed in terms of the electron density profiles from 4 solar radii to 200 solar radii. The measurements were made during a period of solar activity minimum (1976-1977) and show a strong solar latitude effect. The data were analyzed with both a model independent, direct numerical inversion technique and with model fitting, yielding essentially the same results. It is shown that the solar wind density can be represented by two power laws near the solar equator proportional to r exp -2.7 and r exp -2.04. However, the more rapidly falling term quickly disappears at moderate latitudes (approximately 20 deg) leaving only the inverse-square behavior.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 247
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  • 19
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    Li-7 gamma-ray lines from novae (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The possible nucleosynthetic origins of the Li-7 abundance in nova explosions is discussed. The observation of the 478 keV gamma-ray line emitted as Be-7 decays to Li-7 in the expanding ejecta is shown to provide an opportunity to test this hypothesis as well as nova theory. It is noted that the anticipated flux, 10,000 sq cm/sec at 1 kpc, is within range of the Gamma-Ray Observatory.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 244
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  • 20
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    Origin of Ca-Al-rich inclusions. II - Sputtering and collisions in the three-ph8se interstellar medium (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The theory put forward by Clayton (1977) for the formation of the Ca-Al-rich inclusions within C3 meteorites is extended to an evolutionary history in a three-phase interstellar medium. Widespread supersonic turbulence in the hot interstellar medium is maintained by supernova shock waves, giving rise to heavy sputtering of the refractory dust. Subsequent reaccumulation with varying dust/gas ratios or varying particle sizes produces isotopically fractionated Ca-Al-rich accumulates. It is thought that the Ca-Al-rich inclusions themselves are formed by the following sequence in the solar system: (1) cold accumulation of larger-than-average Ca-Al-rich particles containing supernova condensate cores into macroscopic (approximately 1 cm) Ca-Al-rich agglomerates, probably by sedimentation; and (2) fusion of the supernova condensates into macroscopic minerals by exothermic chemical reactions that begin when the accumulate has been warmed, thereby releasing energy from the unequilibrated forms accumulated from the interstellar medium.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 251
    Format: text
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