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  • 1990-1994  (2)
  • 1960-1964  (2)
Materialart
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 1252-1253 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WOOL is normally dyed in an aqueous bath containing dye and inorganic ions. Analysis of the system in terms of physico-chemical concepts is usually carried out on adsorption isotherms where the dye adsorption has been determined in terms of the concentration of dye, hydrogen and inorganic ions in ...
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 692-693 
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Caldin and Long1 have reported investigations on ethanol–water mixtures containing sodium hydroxide in which TNT was used as an indicator. The purple colour obtained is supposedly due to the TNT anion produced by the equilibria: BH + OH- ^ B- + H20 (J3H- = TNT) BH + OEt- ^ B- ...
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Aquatic sciences 56 (1994), S. 106-114 
    ISSN: 1420-9055
    Schlagwort(e): Chlorophyll seasonality ; temporal correction ; lake specificity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract North-temperate lakes have been shown to progress through a general cycle of chlorophyll-a phenology. Because estimates of seasonal means are often based on only a few samples collected against this variable background, these estimates can be biased or uncertain. Our goal was to reduce the seasonal uncertainty and thereby produce more accurate estimates of chlorophyll concentration by defining a correction for phenological development. Time-series data from 149 lake-years were used to develop equations from which chlorophyll values could be “corrected” to the seasonal mean in relation to their particular date of measurement. However, we found the seasonal correction to be ineffectual in reducing uncertainty about nutrient-response regressions. After reviewing a number of hypotheses, we conclude that the correction derived from the average response for many lakes will be inadequate to adjust for the seasonal pattern occurring within any particular lake. This occurs because the temporal weighting correction, generated through repeated averaging, underestimates the seasonal variability which exists among individual lakes. An effective correction, if it is developed will have to be based on patterns within single lakes or possibly different lakes within a single region.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Clinical rheumatology 11 (1992), S. 351-355 
    ISSN: 1434-9949
    Schlagwort(e): Bacterial Arthritis ; Skin Infections ; Treatment Delay ; Rheumatoid Arthritis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Between 1977 and 1988 in the Enschede hospital 72 patients were seen with bacterial arthritis of one or more joints. Staphylococcus aureus was most frequently the causative agent (52%) and the knee was the most frequently infected joint (42%); the mortality rate was 11%. Complete restoration of pre-existent function was seen in 52% of the affected joints. In patients with severe deterioration of joint function after the bacterial infection, the period between the first symptoms and start of treatment (mean 30 days) was significantly longer than in patients with no or moderately deteriorated joint function (mean 10 days). The primary focus was mostly a skin infection, predominantly localized on the lower extremities. Half of all cases of bacterial arthritis occurred in patients with rheumatoid arthritis (RA). We therefore conclude that patients with RA and skin infections, especially if localized on legs or feet, should be treated without delay and that one should not hesitate to prescribe antibiotics. Erythrocyte sedimentation rate (ESR) was less than 20 mm after one hour in 13% and blood leucocyte count less than 10×109/liter in 55% of all patients, showing that a normal ESR and/or blood leucocyte count do not exclude bacterial arthritis. In 4 out of 9 patients with infected prosthetic joints the infection resulted in loosening of the joint, before antibiotic treatment was started. In the other 5 patients bacterial arthritis recurred, in one patient resulting in loosening of the joint, only shortly after stopping long-term successful antibiotic treatment (6-24 months). Thus, we feel that lifelong treatment with antibiotics is a reasonable alternative in cases, where the risk of surgery is very high.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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