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  • 2005-2009
  • 1980-1984  (6)
  • 1945-1949
  • 1981  (6)
Datenquelle
Materialart
Erscheinungszeitraum
  • 2005-2009
  • 1980-1984  (6)
  • 1945-1949
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Polymer Collapse (1981)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physical Chemistry 32 (1981), S. 433-451 
    Details
    ISSN: 0066-426X
    Quelle: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1146/annurev.pc.32.100181.002245
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Phosphorus cycling in a dense Potamogeton pectinatus L. Bed (1981)
    Springer
    Oecologia 49 (1981), S. 56-66 
    Details
    ISSN: 1432-1939
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary An analysis of phosphorus concentrations and standing stocks in the various components of a dense Potamogeton pectinatus L. community in a brackish lake showed that the amounts of P per unit area varied in the following order: Sediments 〉 Above ground macrophytes 〉 Detritus 〉 Benthic Invertebrates 〉 Below ground macrophyte tissue 〉 Epiphytic algae 〉 Water soluble P 〉 Water borne particulate P. Seasonal changes in the variability of these stocks are described, and shown to be controlled by the annual growth and decomposition pattern of the Potamogeton. The sediments were suggested as the major source of P for the plant biomass. Studies using 32P tracer showed that of a given input of P to the water, 32% went to large epiphytic algae, 17% to the Potamogeton, 16% to the benthic fauna (mostly filter feeding bivalves), 28% to the sediments (almost all incorporated in the top 1 cm), and the remaining 7% was adsorbed on to, or absorbed by microorganisms associated with detritus. Analysis of 32P uptake curves indicated that of the P absorbed by the Potamogeton, a significant proportion went to the complex adnate periphyton on the leaf surface. We were unable to separate this fraction. Movement of P in the community was shown to be a closed cycle, and any release of P from decaying macrophytes would be rapidly reabsorbed by epiphytic algae. It is unlikely that phosphorus, once cycling in the macrophyte community, would become transferred to the circulation in the open lake.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00376898
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  • 3
    Digitale Medien
    Digitale Medien
    The localised distribution of U and other incompatible elements in spilitic pillow lavas (1981)
    Springer
    Contributions to mineralogy and petrology 78 (1981), S. 111-117 
    Details
    ISSN: 1432-0967
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract The fission track technique was used not only to determine the U distribution, but indirectly, to locate the host minerals of other incompatible elements such as P, Ti, Y, Zr and Nb in spilitic pillow lavas from SW England. The majority of U was introduced early in the alteration process probably due to interaction with sea-water. At a later stage in the process, these elements, some previously considered to be relatively immobile during low-grade alteration, were mobilised and subsequently redeposited in stable secondary phases. The hydrothermal fluid responsible for mobility was rich in CO2 and H2O. Carbonate complexes were the most likely mobile species.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00373772
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  • 4
    Digitale Medien
    Digitale Medien
    Severe penicillin-induced cholestasis in a 91-year-old woman (1981)
    Springer
    Digestive diseases and sciences 26 (1981), S. 470-473 
    Details
    ISSN: 1573-2568
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary An elderly woman was admitted for treatment of severe stasis ulceration, associated with varicose veins. One course of cloxacillin was given orally followed by a second course of penicillin-G to eradicate persistant hemolytic streptococcal skin infection. Deep progressive jaundice subsequently developed due to intrahepatic cholestasis and persisted for several weeks before resolution. Having excluded a progressive extrahepatic malignant lesion by appropriate investigations, the diagnosis was substantiated by classical changes present in a percutaneous liver biopsy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01313594
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  • 5
    Digitale Medien
    Digitale Medien
    An atlas of gas chromatographic profiles of neutral steroids in health and disease (1981)
    Springer
    Chromatographia 14 (1981), S. 488-488 
    Details
    ISSN: 1612-1112
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02263540
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  • 6
    Digitale Medien
    Digitale Medien
    Biliary lipid, bile acid composition, and dietary correlations in Micmac Indian women (1981)
    Springer
    Digestive diseases and sciences 26 (1981), S. 42-49 
    Details
    ISSN: 1573-2568
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The precursor state for cholesterol gallstone formation is cholesterol-saturated bile. We studied a high-risk group for cholesterol gallstones to determine whether dietary variables affect bile cholesterol. Bile samples were analyzed from 46 Micmac Indian women without gallstones and 13 with gallstones for molar percentage cholesterol (MPC) and bile acid composition. The data were analyzed by multiple regression analysis with MPC as the dependent variable and the dietary variables, obtained from four consecutive-day food records, and biliary bile acid composition as the independent variables. In the 46 women without gallstones, obesity, calorie range/calorie intake, and iron and calcium intake were, in their order of importance, significant factors. In normal weight subjects (ponderal index〉12.5) relative obesity was still a significant correlate. Obesity and iron intake were positive correlates while calorie range/calorie intake and calcium intake varied inversely. When the effect of obesity was controlled, these factors were still significant in this group, as they were in the gallstone group. In addition, the duration of overnight fast obtained by history, together with the proportions of deoxycholic and chenodeoxycholic acids in bile were correlates of the biliary molar percentage cholesterol.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01307974
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