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  • Carbohydrate tolerance plasma glucose levels plasma insulin levels  (1)
  • Chemistry  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Carbohydrate tolerance in the very aged (1973)
    Springer
    Diabetologia 9 (1973), S. 387-390 
    Details
    ISSN: 1432-0428
    Keywords: Carbohydrate tolerance plasma glucose levels plasma insulin levels ; aged normals ; diabetes antagonism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fifty-three elderly non-diabetic volunteers aged 85 to 96 years were studied when they had reached their pre-admission health state before their discharge from the acute assessment wards of a Geriatric Unit. Blood sugar levels and their corresponding plasma insulin levels were estimated after a 50 g glucose load. Thirty-four patients had normal curves, thirteen had an abnormal 2h. Blood sugar over 120 mg/100 ml and six (all women) had two or more abnormal levels. Carbohydrate intolerance was not related to age, obesity or a positive family history. The results were compared to two groups of young controls, viz nineteen healthy post partum women mean age 29.9 yrs, and twenty-one healthy women mean age 52 years, admitted for investigation of post menopausal bleeding. With increasing age, the peak levels of glucose and insulin are delayed and when carbohydrate intolerance develops the rate of insulin secretion remains the same. The glucose and insulin values closely follow each other and there is no suggestion that insulin secretion is reduced with age. In fact the elderly diabetic shows increased insulin secretion suggesting insulin antagonism or inactivity unrelated to obesity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01239433
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Optical assessment of a fouling-resistant surface (PHEMA/ benzalkonium chloride) after exposure to a marine environment (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 8 (1998), S. 187-193 
    Details
    ISSN: 1057-9257
    Keywords: antifouling ; biofouling ; hydrogel ; benzalkonium chloride ; ultraviolet-visible spectroscopy ; underwater optics ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: A hydrogel based on poly(2-hydroxyethyl methacrylate) (PHEMA) containing benzalkonium chloride (BAK) can be used as an environmentally acceptable, fouling-resistant material in the marine environment. The loaded hydrogel system is transparent and has the potential to be used in the protection of optical ports in underwater instruments. Ultraviolet-visible (UV-vis) spectroscopy was used to study the optical properties of the material after a marine exposure period. The optical transmittance of PHEMA/ BAK was higher for 10 weeks than that detected for poly(methyl methacrylate) (PMMA), a material currently used in commercial instruments, which confirmed the superior fouling resistance of the PHEMA/ BAK combination. The UV-vis spectroscopic method was quick, relatively cheap and accurate enough to allow the effects of the development of marine fouling on transparent surfaces for use in marine underwater optical applications to be monitored. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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