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  • Articles  (36)
  • Springer  (36)
  • 2005-2009  (2)
  • 1975-1979  (6)
  • 1970-1974  (11)
  • 1920-1924  (1)
  • 1905-1909  (16)
  • Chemistry and Pharmacology  (34)
  • Geography  (2)
Collection
  • Articles  (36)
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Year
Journal
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 26 (1977), S. 39-50 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Im Dezember 1975 wurden durch eine Fesselballonsonde die vertikalen Temperatur- und Windprofile im Gore River Valley im westlichen Colorado ermittelt. Aus Beobachtungen an einem wolkenlosen Morgen bei einer anfangs starken Inversion im Tal zeigte sich, daß die Inversionsobergrenze stetig um 120 m Std−1. absank und nach ungefähr vier Stunden den Talgrund erreichte. Schwache Talabwinde wehten innerhalb der Inversionsschicht. während stärkere Talaufwinde oberhalb derselben herrschten. Eine Hypothese wird vorgeschlagen, um diese Beobachtungen zu erklären. Die Abkühlung am späten Nachmittag und am Abend, wobei die Bildung einer Inversion einsetzte, deren Schichtdicke in weniger als zwei Stunden 175 m betrug, ist Gegenstand einer gesonderten Untersuchung. Winde innerhalb der Inversionsschicht wurden nicht mehr von den Winden in der freien Atmosphäre beeinflußt und blieben im Laufe der Nacht sehr schwach. Bewölkung während der Erwärmungsperiode an einem Morgen hatte zur Folge, daß das Temperaturprofil sich Isothermie näherte, indem Erwärmung gleichmäßig im ganzen Luftraum des Tales sich fortsetzte.
    Notes: Summary A tethered balloon sounder was used to collect vertical temperature and wind structure data in the Gore River Valley of Western Colorado during December, 1975. Observations taken on a clear morning in which a deep inversion was initially present in the valley showed that the inversion top descended at a steady rate of ∼120 m hr−1. reaching the valley bottom after approximately 4 hours. Weak down-valley winds were present within the inversion layer while stronger up-valley winds prevailed above. A hypothesis is presented to account for these observations. A case study is presented for afternoon and evening cooling in which a ground-based inversion developed to a depth of 175 m in less than 2 hours. Winds within the inversion became decoupled from the synoptic-scale winds and remained very weak during the night. The effect of cloud cover during a morning heating cycle was to make the temperature soundings approach isothermal while sensible heating continued throughout the valley volume.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 11 (1974), S. 121-139 
    ISSN: 1573-4927
    Keywords: gene expression ; gene mapping ; lysosomal enzymes ; cell fusion ; gel electrophoresis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Lysosomal acid phosphatase activity in human and mouse cells was separated into multiple zones by starch gel electrophoresis. One of the two major zones in the mouse was apparently extinguished when genetic information from man and the mouse was combined in proliferating man-mouse somatic cell hybrids. The evidence suggested that the absence of the mouse lysosomal acid phosphatase (mAP-1) was influenced by the human genome. The gene coding for human acid phosphatase (hAP-1) was shown to be unlinked to the presumed human component which extinguished the mouse acid phosphatase (mAP-1). The mechanism of “extinction” is postulated to be a modification in the processing of the mouse lysosomal enzyme. A dimeric structure was suggested for acid phosphatase-1 of man, mouse, and rat since a single hybrid enzyme was expressed in man-mouse and mouse-rat somatic cell hybrids.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 5 (1971), S. 457-466 
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Examination of the frequencies of several loci controlling isozymes in three geographically distinct feral populations of mice showed the average animal to be heterozygous at 10.3% of his loci. There was no evidence for interaction between loci, nor any evidence for inbreeding in the populations. Thirty-nine inbred strains, including four newly derived ones, were also characterized for their alleles for as many as 16 polymorphic loci. Among these strains, variability is at least as great as in any single feral population, but probably less than that found among all feral populations of the species.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Reviews of physiology, biochemistry and pharmacology 23 (1924), S. 212-273 
    ISSN: 1617-5786
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Zusammenfassung Kurz zusammengefasst sind die wichtigsten, hier niedergelegten Tatsachen folgende: Es wurde eine Methode für die totale Entfernung der Leber bei Hunden ausgebildet, welche frei von den meisten Fehlerquellen ist, die früheren Exstirpationsmethoden des Organs bei Säugetieren anhaften. Es wurde gefunden, dass eine geeignete Einführung von Glukose bei derart operierten Hunden das Leben viele Stunden nach Verlust des gesamten Lebergewebes erhält. Von den vielen an hepatektomierten Tieren gemachten Beobachtungen möchten wir hervorheben, 1. dass die Leber zur Erhaltung des Blutzuckerspiegels absolut wesentlich ist; 2. dass die Leber der wichtigste Faktor, wenn nicht der einzige, bei dem Prozess der Desamidierung und der Harnstoffbildung ist, und 3. dass Bilirubin auch ohne Mitwirkung der Leber gebildet werden kann.
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  • 5
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Malate dehydrogenase and malic enzyme each possess supernatant and mitochondrial molecular forms which are structurally and genetically independent. We describe electrophoretic variants of the mitochondrial enzymes of malate dehydrogenase and malic enzyme in mice. Progeny testing from genetic crosses indicated that the genes which code for mitochondrial malate dehydrogenase and malic enzyme were not inherited maternally but as independent unlinked nuclear autosomal genes. The locus for mitochondrial malic enzyme was located on linkage group I. Linkage analysis with a third mitochondrial enzyme marker, glutamic oxaloacetic transaminase, showed that the nuclear genes which code for the three mitochondrial enzymes were not closely linked to each other. This evidence suggests that clusters of nuclear genes coding for mitochondrial function are unlikely in mice.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 7 (1972), S. 193-204 
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Based on somatic cell genetic analysis, autosomal gene linkage is reported for the supernatant enzymes of human isocitrate dehydrogenase (IDH) and malate dehydrogenase (MDH) in human-mouse cell hybrids. The IDH, MDH linkage was not linked to the X and E 17 chromosomes or to 12 additional human enzyme markers.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Biochemical genetics 8 (1973), S. 37-45 
    ISSN: 1573-4927
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract To elucidate the mechanisms involved in the regulation of uricase activity in Drosophila melanogaster, a comparative analysis of the patterns of uricase activity during development was undertaken for the wild type, Ore-R, and the mutants ry 2 and ma-1. Uricase activity in ry 2 and ma-l, unlike that in Ore-R, increased rapidly following emergence of the adult. This study indicates that uricase in Drosophila, in contrast to that in several microorganisms, is not induced by uric acid, since ry 2 and ma-l with no detectable uric acid have higher activity than the wild type.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 46 (1907), S. 749-756 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 47 (1908), S. 81-105 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 47 (1908), S. 590-597 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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