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  • SPACE RADIATION  (273)
  • Humans
  • Lunar and Planetary Science and Exploration
  • Mice
  • 1975-1979  (292)
  • 1960-1964  (106)
  • 1
    Publication Date: 1979-08-17
    Description: Pontiac fever affected ten men who had cleaned a steam turbine condenser with compressed air. Previous epidemics of Pontiac fever and Legionnaires' disease--both caused by Legionella Pneumophila (proposed sp. nov.)--involved "airborne spread" from air-conditioning cooling towers or evaporative condensers. Aerosols of contaminated water in heat-rejection systems appear to be important sources of epidemic legionellosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fraser, D W -- Deubner, D C -- Hill, D L -- Gilliam, D K -- New York, N.Y. -- Science. 1979 Aug 17;205(4407):690-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/462175" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Air Microbiology ; Humans ; Legionnaires' Disease/*etiology/microbiology/transmission ; Male ; Occupational Medicine ; Time Factors
    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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  • 2
    Publication Date: 2011-08-17
    Description: The technical properties, operation, and expected sensitivity are discussed for an experiment intended to search for narrow lines in the spectra of gamma ray bursts during the ISEE-C mission. At the heart of the experiment is a radiatively cooled germanium solid state photon detector. The instrumentation is capable of storing the entire spectrum of all but the largest bursts in the energy range 0.05-6.5 MeV. In addition, it analyzes the signals from two CsI detectors in two other experiments on the spacecraft and records event time histories from these to a few millisecond accuracy. A background mode permits spectral analysis during quiet times and will allow the determination of physically interesting upper limits for narrow lines in the diffuse gamma ray background radiation.
    Keywords: SPACE RADIATION
    Type: Gamma Ray Spectry. in Astrophys.; p 516-528
    Format: text
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  • 3
    Publication Date: 2011-08-17
    Description: Measurements of the gamma-ray emission in the medium-energy range between 15 and 100 MeV, obtained during two balloon flights from Brazil, are presented. The importance of this energy region in determining whether neutral-pion decay or electron bremsstrahlung is the most likely dominant source mechanism is discussed, along with the implications of such observations. Specifically, the data from this experiment suggest that emission from the galactic plane is similar to the theoretical spectrum calculated by Fichtel et al. (1976), including both source mechanisms but with the bremsstrahlung component enhanced by a factor of about 2. A spectral distribution of gamma-rays produced in the residual atmosphere above the instrument is also presented and compared with other data. A rather smooth spectral variation from high to low energies is found for the atmospheric spectrum.
    Keywords: SPACE RADIATION
    Type: Astrophysical Journal; vol. 225
    Format: text
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  • 4
    Publication Date: 2019-06-27
    Description: Measurements of the gamma-ray emission in the medium energy range between 15 and 100 MeV, obtained during two ballon flights from Brazil are presented. The importance of this energy region in determining whether pi deg - decay of electron bremsstrahlung is the most likely dominant source mechanism is discussed along with the implications of such observations. Specifically, the data from this experiment suggest that emission from the galactic plane is similar to theoretical spectrum calculations including both sources mechanisms, but with the bremsstrahlung component enhanced by a factor of about 2. A spectral distribution of gamma-rays produced in the residual atmosphere above the instrument is also presented and compared with other data. A rather smooth spectral variation from high to low energies is found for the atmospheric spectrum.
    Keywords: SPACE RADIATION
    Type: NASA-TM-79543
    Format: application/pdf
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  • 5
    Publication Date: 2019-06-27
    Description: A balloon-borne magnetic core digitized spark chamber with two assemblies of spark-chambers above and below the scintillation counters was used to measure the medium energy gamma ray flux from the galactic center region. Gamma ray calculations are based on the multiple scattering of the pair electrons in 15 aluminum plates interleaved in the spark chamber modules. Counting rates determined during ascent and at ceiling indicate the presence of diffuse component in this energy range. Preliminary results give an integral flux between 15 and 70 MeV compared to the differential points in other results.
    Keywords: SPACE RADIATION
    Type: NASA-TM-78331 , INPE-1218-PE/122
    Format: application/pdf
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  • 6
    Publication Date: 1978-06-16
    Description: Throbin-activated human platelets cause agglutination of trypsinized, formalinized bovine erythrocytes. This lectin activity of stimulated platelets was blocked by galactosamine, glucosamine, mannosamine, lysine, and arginine, but not by N-acetylated sugars, other neutral sugars, or other amino acids. Inhibitors of the thrombin-induced lectin activity also blocked thrombin-induced platelet aggregation. It appears that a membrane surface component that has lectin activity mediates platelet aggregation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gartner, T K -- Williams, D C -- Minion, F C -- Phillips, D R -- New York, N.Y. -- Science. 1978 Jun 16;200(4347):1281-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663608" target="_blank"〉PubMed〈/a〉
    Keywords: *Agglutinins ; Amino Acids/pharmacology ; Amino Sugars/pharmacology ; Animals ; Binding Sites ; Cytochalasin B/pharmacology ; *Hemagglutinins ; Humans ; Membrane Proteins/blood ; Platelet Aggregation/*drug effects ; Prostaglandins E/pharmacology ; Species Specificity ; Thrombin/*pharmacology
    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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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1978-11-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sabath, L D -- Philipson, A -- Charles, D -- New York, N.Y. -- Science. 1978 Nov 3;202(4367):540-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/705345" target="_blank"〉PubMed〈/a〉
    Keywords: Aborted Fetus ; Ampicillin/blood ; Anti-Bacterial Agents/administration & dosage ; *Ethics, Medical ; Female ; Humans ; Informed Consent ; Maternal-Fetal Exchange ; Pregnancy/*drug effects ; *Pregnant Women
    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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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1979-03-09
    Description: Movement time varies as a function of amplitude and requirements for precision, according to Fitts' law, but when subjects perform two-handed movements to targets of widely disparate difficulty they do so simultaneously. The hand moving to an "easy" target moves more slowly to accommodate its "difficult" counterpart, yet both hands reach peak velocity and acceleration synchronously. This result suggests that the brain produces simultaneity of action not by controlling each limb independently, but by organizing functional groupings of muscles that are constrained to act as a single unit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kelso, J A -- Southard, D L -- Goodman, D -- New York, N.Y. -- Science. 1979 Mar 9;203(4384):1029-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/424729" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain/physiology ; Functional Laterality ; Hand/physiology ; Humans ; Motor Skills/*physiology ; *Movement
    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
    Publication Date: 1979-05-11
    Description: A method for measuring hydroxylase cofactor activity in human cerebrospinal fluid is described. The hydroxylase cofactor content of cerebrsopinal fluid from Parkinsonian patients is approximately 50 percent that of normal subjects. A significant correlation between hydroxylase cofactor and the concentration of homovanillic acid in the cerebrospinal fluid was observed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lovenberg, W -- Levine, R A -- Robinson, D S -- Ebert, M -- Williams, A C -- Calne, D B -- New York, N.Y. -- Science. 1979 May 11;204(4393):624-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/432666" target="_blank"〉PubMed〈/a〉
    Keywords: Biopterin/analogs & derivatives/analysis/*cerebrospinal fluid ; Homovanillic Acid/cerebrospinal fluid ; Humans ; Methods ; Parkinson Disease/*cerebrospinal fluid ; Pteridines/*cerebrospinal fluid
    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
    Publication Date: 1979-04-20
    Description: The compound 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) causes hepatocellular damage and porphyria in C57B1/6J mice, among a wide range of toxic effects. We compared the effect of TCDD toxicity in iron-deficient mice with that in mice receiving a normal diet. Porphyria did not develop in the iron-deficient animals, and these animals were also protected from hepatocellular damage and certain other toxic effects of TCDD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sweeny, G D -- Jones, K G -- Cole, F M -- Basford, D -- Krestynski, F -- New York, N.Y. -- Science. 1979 Apr 20;204(4390):332-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/432648" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Dioxins/*toxicity ; Enzyme Induction ; Iron/*deficiency ; Liver/pathology ; Mice ; Microsomes, Liver/enzymology ; Mixed Function Oxygenases/metabolism ; Porphyrias/*chemically induced ; Tetrachlorodibenzodioxin/*toxicity ; Uroporphyrinogen Decarboxylase/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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