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  • Biochemistry and Biotechnology  (2)
  • Cost effectiveness  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of the Gay and Lesbian Medical Association 3 (1999), S. 51-58 
    ISSN: 1573-3637
    Keywords: Cost effectiveness ; outcomes research ; hepatitis A ; vaccination ; decision analysis ; disease prevention
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To estimate costs and benefits of vaccinating young homosexual men against hepatitis A. Design and setting: A decision-analytic model was used to assess vaccination from the societal perspective. Effects of vaccination at age 20 were modeled through each person's lifetime, with costs discounted at 3% annually. Intervention: Two doses of formalin-inactivated vaccine (Havrix, Smithkline Beecham Pharmaceuticals) administered by intramuscular injection 6–12 months apart. Results: Vaccination of 10,000 men would cost $959,000. Over the lifetimes of cohort members, hepatitis A-related hospitalizations would decline from 366 to 76, and treatment costs would decline from $2,577,000 to $363,000. Treatment cost reduction would fully offset vaccination costs within 10 years. Productivity losses associated with hepatitis A morbidity, primarily work absenteeism, would decline by $5,231,000. Vaccination would prevent an estimated 8.6 premature deaths, saving 213 life-years and $2,836,000 in mortality-related productivity losses. Results are only modestly affected when model assumptions are varied within plausible ranges. Conclusions: Hepatitis A vaccine provides improved patient outcomes and cost reduction. From a societal perspective, vaccination provides $10.72 in economic benefits for every $1 spent on vaccination. Physicians should counsel homosexual men to be vaccinated against hepatitis A. Health insurers would find it in their own financial interest to cover vaccination.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 9 (1967), S. 429-437 
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: An aflatoxin-producing isolate of Aspergillus flavus was found to be a consistent producer of aflatoxin on all substrates which supported the growth of the mold. In competition with six other selected molds, this isolate was dominant except with one species of Penicillium. Aflatoxin production was parallel to the extent of A. flavus growth whether effected by substrate or competition.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 48 (1995), S. 234-245 
    ISSN: 0006-3592
    Keywords: phosphorus removal, biological ; metabolic model ; polyphosphate ; PHB, ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A metabolic model of the biological phosphorus removal process has been developed and validated previously for complex conversions during the process under anaerobic and aerobic conditions at different growth rates in sequencing batch reactors in steady state. For additional validation of the metabolic model, the model was applied to the dynamic conditions which occur during the start-up phase of the biological P removal in the presence and absence of non-polyP heterotrophic microorganisms. In a laboratory scale sequencing batch reactor, experiments were performed to examine the enrichment of the population with polyphosphate organisms during the start-up and the subsequent shift from non-polyP, heterotrophic organisms to polyP organisms in the sludge. The effect of different influent loading patterns for acetate and phosphate was studied. In these experiments, the maximal growth rate of the polyP organisms and the behavior of the internal storage compounds could be derived. The metabolic model was capable of describing the experimental results, without the need to adjust the kinetic or stoichiometric parameters obtained under steady state conditions. © 1995 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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