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  • EARTH RESOURCES AND REMOTE SENSING  (148)
  • Male
  • 1980-1984  (184)
  • 1981  (184)
  • 1
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    Regulation of leucine metabolism in man: a stable isotope study (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-12-04
    Description: Leucine catabolism is regulated by either of the first two degradative steps: (reversible) transamination to the keto acid or subsequent decarboxylation. A method is described to measure rates of leucine transamination, reamination, and keto acid oxidation. The method is applied directly to humans by infusing the nonradioactive tracer, L-[15N,1-13C]leucine. Leucine transamination was found to be operating several times faster than the keto acid decarboxylation and to be of equal magnitude in adult human males under two different dietary conditions, postabsorptive and fed. These results indicate that decarboxylation, not transamination, is the rate-limiting step in normal human leucine metabolism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matthews, D E -- Bier, D M -- Rennie, M J -- Edwards, R H -- Halliday, D -- Millward, D J -- Clugston, G A -- AM-25994/AM/NIADDK NIH HHS/ -- HD-10667/HD/NICHD NIH HHS/ -- RR-00954/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Dec 4;214(4525):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7302583" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Carbon Isotopes ; Humans ; Kinetics ; Leucine/*metabolism ; Male ; Models, Biological ; Nitrogen Isotopes ; Oxidation-Reduction
    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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    Sustained intracerebroventricular infusion of brain fuels reduces body weight and food intake in rats (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-03
    Description: Long-term infusion of glucose, beta-hydroxybutyrate, and glycerol into the third ventricle of the rat brain caused a stabilization of body weight at a lower than normal level. Among the glucose- and glycerol-treated animals this weight loss was caused in part by temporary hypophagia. Among the animals treated with beta-hydroxybutyrate the weight loss was unaccompanied by a reduction in food intake. The results are consistent with the view that the systems controlling food intake and body weight are sensitive to the availability of brain fuels. They are not consistent however, with the view that these control systems monitor calories independently of their source.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davis, J D -- Wirtshafter, D -- Asin, K E -- Brief, D -- AM 26030/AM/NIADDK NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 3;212(4490):81-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7193909" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Hydroxybutyric Acid ; Animals ; *Appetite Regulation/drug effects ; *Body Weight/drug effects ; Brain/drug effects/*physiology ; Circadian Rhythm ; Drinking/drug effects ; *Eating/drug effects ; Glucose/*pharmacology ; Glycerol/*pharmacology ; Hydroxybutyrates/administration & dosage/*pharmacology ; Hypothalamus/drug effects ; Injections, Intraventricular ; Male ; 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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  • 3
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    Seasat data utilization project (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: During the three months of orbital operations, the satellite returned data from the world's oceans. Dozens of tropical storms, hurricanes and typhoons were observed, and two planned major intensive surface truth experiments were conducted. The utility of the Seasat-A microwave sensors as oceanographic tools was determined. Sensor and geophysical evaluations are discussed, including surface observations, and evaluation summaries of an altimeter, a scatterometer, a scanning multichannel microwave radiometer, a synthetic aperture radar, and a visible and infrared radiometer.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-168557 , REPT-622-233
    Format: application/pdf
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  • 4
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    Studies of high latitude current systems using MAGSAT vector data (1981)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The magnetic disturbance fields caused by global external current systems are considered with particular emphasis on improving the understanding of the physical processes which control high latitude current systems. Following processing the MAGSAT data were routinely plotted in the Universal Time (UT) format as well as in a polar plot format. The H'D'U' coordinate system, was adopted as the standard for representing the MAGSAT residual magnetic field vectors. A data file was generated and the TPOLAR computer code was developed to determine from the orbital elements, the time, latitude, and MLT of the extremum latitude of each transpolar segment of orbit. The precision of the vector data set from MAGSAT prompted an extended exploratory phase for data analysis procedures, modeling techniques and phenomenology.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E82-10188 , NASA-CR-168616 , NAS 1.26:168616 , PR-3
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Cognitive interaction after staged callosal section: evidence for transfer of semantic activation (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-04-17
    Description: Sensory and cognitive functions were assessed in a right-handed male before and after partial and complete callosal commissurotomy. After the initial posterior section was made, there was no evidence of interhemispheric sensory transfer, although the left hemisphere did have access to stimulus-related semantic and episodic information from the right hemisphere. After the callosum was completely sectioned, this exchange was no longer observed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sidtis, J J -- Volpe, B T -- Holtzman, J D -- Wilson, D H -- Gazzaniga, M S -- 2 R01 NS15053-02/NS/NINDS NIH HHS/ -- RR001-02/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1981 Apr 17;212(4492):344-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6782673" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Cognition/*physiology ; Cognition Disorders/*physiopathology ; Corpus Callosum/*physiology/surgery ; Epilepsy, Tonic-Clonic/surgery ; Humans ; Language Disorders/*physiopathology ; Male ; Methods ; Perception/physiology ; Perceptual Disorders/*physiopathology ; Postoperative Complications/physiopathology ; Sensation/*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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  • 6
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    Genetically determined deficiency of the third component of complement in the dog (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-06-05
    Description: A genetically determined deficiency of the third component of complement (C3) has been identified in a colony of Brittany spaniels. Immunochemical methods show no detectable C3 in the serum of the affected dogs, and there is no evidence of an inhibitor of C3 in the serum. The C3 deficiency appears to be transmitted as an autosomal recessive trait.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winkelstein, J A -- Cork, L C -- Griffin, D E -- Griffin, J W -- Adams, R J -- Price, D L -- AI-11637/AI/NIAID NIH HHS/ -- NS-10580/NS/NINDS NIH HHS/ -- RR-00130/RR/NCRR NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1981 Jun 5;212(4499):1169-70.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233211" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Complement C3/deficiency/*genetics ; Dog Diseases/genetics ; Dogs ; Female ; Genes, Recessive ; Heterozygote Detection ; Homozygote ; Male ; Muscular Atrophy/genetics/veterinary ; Pedigree
    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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  • 7
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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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  • 8
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    Irrigation survey in Sherburne County, Minnesota (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Approximately 70% of Minnesota's irrigation is with center pivot distribution systems whose diagnostic appearance on remotely sensed imagery is a circular pattern which can be readily identified on LANDSAT MSS band imagery. Fields irrigated with traveling guns, laterals, booms, or cornering systems either result in angular field patterns or obscure the circular patterns normally visible on imagery. The IDMS system at Goddard was used to develop a LANDSAT digital classification of the Sherburne County area, which located fields regardless of shape, and was not dependent of visual interpretation. Ground truth collection and classification attempts are described in an effort to inventory all wells in the area.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA. Goddard Space Flight Center Eastern Reg. Remote Sensing Appl. Conf.; p 63-68
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  • 9
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    Interactive capabilities: Between unacceptable and unnecessary (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A very low cost interactive image analysis computer system suitable for use in education, research, or operational remote sensing applications system should be centered around a high quality image display through which the analyst can use photointerpretation skills to evaluate and alter computer mapping or classification calculations. The definition of acceptable capabilities for such a system must take into account the needs of the image analyst balanced with current state-of-the-art technology and cost. A range of acceptable capabilities is defined based primarily on image analysis requirements, but tempered occassionally by cost and technology constraints. Desirable parameters are also listed.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Purdue Univ. CORSE-81: The 1981 Conf. on Remote Sensing Educ.; p 285-290
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    NASA TECHNICAL REPORTS
  • 10
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    Surface reflectance measurements in the ultraviolet from an airborne platform. II (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: The spectral and broadband reflectance of naturally occurring desert sand, black lava, gypsum sand, and snow cover is measured from a twin engine Cessna 402-series aircraft. The measurement system is computer controlled and electrically isolated from the aircraft. It consists of upward and downward looking hemispheric diffusers, filters, a rotating 90 degree mirror, a focusing lens, and a double monochromator/PMT or a UV enhanced photodiode. Measurements are made at several altitudes enabling the empirical determination of the backscatter and attenuation effects on the reflectance. These reflectance results along with those reported earlier for a pine forest, green farmland, the open ocean, and brown farmland are represented analytically.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Applied Optics; 20; Feb. 15
    Format: text
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