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  • 1
    Monographie ausleihbar
    Monographie ausleihbar
    Berlin : Springer
    Signatur: MOP 10422
    Materialart: Monographie ausleihbar
    Seiten: VIII, 514 S.
    Originaltitel: The Internal Constitution of the Stars
    Sprache: Deutsch
    Standort: MOP - Bitte bestellen
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 1980-10-01
    Print ISSN: 0022-460X
    Digitale ISSN: 1095-8568
    Thema: Maschinenbau , Physik
    Publiziert von Elsevier
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Naturwissenschaften 12 (1924), S. 279-281 
    ISSN: 1432-1904
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Allgemeine Naturwissenschaft
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    ISSN: 1432-1041
    Schlagwort(e): Caffeine ; Cardio-green ; Indocyanine Green ; altitude ; metabolism ; pharmacokinetics ; hypoxia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Medizin
    Notizen: Abstract The effects of chronic exposure to high altitude on the pharmacokinetics of caffeine and cardiogreen (ICG) were examined in eight healthy males (23–35 y) at sea level (SEA) and following 16 days residence at 4300 m (ALT). ICG (0.5 mg · kg−1) was administered as an intravenous bolus and caffeine (4 mg · kg−1) in an orally ingested solution. The concentration of ICG, caffeine, and the primary metabolites of caffeine (MET) were determined in serial blood samples and their pharmacokinetics computed. In comparison to SEA, ALT resulted in a significant decrease in the caffeine half-life (t1/2, 4.7 vs 6.7 h) and area under the curve (2.5 vs 3.7 g · 1−1 · min−1), and increased clearance (117 vs 86 ml · min−1 · 70 kg−1). In ALT the area under the curve of ICG significantly decreased (85 vs 207 mg · 1−1 · min−1) and the volume of distribution and clearance increased (5.2 vs 2.41 and 532 vs 234 ml · min−1 respectively) compared to SEA. There was a significant increase in the AUC ratio of MET to caffeine indicating that either metabolite formation or elimination was increased in ALT. These results demonstrate that in humans, chronic exposure to 4300 m results in the modification of the pharmacokinetics of caffeine and ICG.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    Marine mammal science 14 (1998), S. 0 
    ISSN: 1748-7692
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Notizen: Recovered otoliths from pinniped feces provide valuable information on diet composition and prey size. We studied the effect of meal size on otolith recovery from the feces of one harbor and eight gray seal pups. Each of 11 experiments comprised a half-ration meal, a period of fecal collection, a 1.5-or double-ration meal again followed by a period of fecal collection. A significantly lower percentage of Atlantic herring otoliths were recovered from half-ration meals (25%± 12.5% in the harbor seal, 8.6%± 6.9% in eight gray seals) than from 1.5- or double-ration meals (62.5%± 3.1 % in the harbor seal, 32.8%± 23.5% in gray seals). Meal size also significantly affected the percentage of Atlantic cod otoliths recovered from gray seal feces (65.0%± 26.3% from half ration, 98.3%± 2.9% from 1.5 ration). For both size meals, recovered cod otoliths were more significantly eroded than herring otoliths. The development of correction factors to account for the effects of digestion will need to consider the distribution of meal sizes of free-ranging pinnipeds.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 132 (1933), S. 639-639 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE letter of Gamow and Landau1 suggests that an upper limit to the internal temperature of a star can be obtained by considering the disintegration of lithium. Investigations of this kind will probably be of great importance in the future development of astrophysics, but the ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 104 (1919), S. 372-372 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] PROF. ANDERSON suggested in NATURE of December 4 (p. 354) a possible source of systematic error in the determination of the deflection of light at an eclipse, owing to lateral refraction caused by a temperature-gradient in the shadow-cone in our atmosphere. Having carefully considered this ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 125 (1930), S. 489-489 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] I ASK your permission to reply to the arguments brought forward by Prof. Milne (NATURE, Mar. 22) against my treatment of the problem of stellar luminosity. The outcome of my investigation is a formula which predicts the luminosity of a star of given mass and radius (or mass and effective ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 105 (1920), S. 37-37 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MR. LEIGH PAGE has given a very simple method of treating the motion of high-speed particles in a gravitational field on Einstein's theory (NATURE, February 26, p. 692). In one respect his results differ from those which have been obtained by more laborious methods, and I think that some error ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 148 (1941), S. 341-342 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MAY I first correct a slip in my last letter? In contrasting the actual and imagined results of the Michelson-Morley experiment, I absentmindedly interchanged them. I should have written, “It is a logical impossibility that the experiment should give other than a null result in the conditions ...
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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