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  • 1995-1999  (2)
  • Butylated hydroxytoluene  (1)
  • Economic equilibria  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 252 (1995), S. 509-512 
    ISSN: 1434-4726
    Keywords: Selenium ; Vitamin A ; Butylated hydroxytoluene ; Chemoprevention ; Human tongue cancer cells in vitro
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of vitamin A, selenium and butylated hydroxytoluene (BHT) on the growth of a human tongue cancer cell line were examined in monolayer cell cultures. A colony-forming assay showed a 50% reduction in the survival rate of the cell line at a concentration of 2.6 μg/ml selenium, 60 I μg/ml vitamin A and/or 38 μg/ml BHT. Relatively low concentrations of selenium markedly inhibited glucose consumption. Flow cytometric analysis with both fluorescein-isothiocyanate-labelled bromodeoxyuridine monoclonal antibody and propidium iodide demonstrated an increase in S-phase fractions 1 day after the addition of selenium, increased GO/G1 phase fractions in the presence of vitamin A and increased G2M phase fractions when BHT was added. These results suggest that these compounds inhibit DNA synthesis of in vitro human tongue cancer cells by different mechanisms.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of optimization theory and applications 87 (1995), S. 679-701 
    ISSN: 1573-2878
    Keywords: Economic equilibria ; stationary point problems ; simplicial algorithms ; simplicial subdivisions ; adjustment processes ; piecewise linear approximations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, a new variable-dimension simplicial algorithm is developed to compute economic equilibria on the Cartesian product of then-dimensional unit price simplexS n and them-dimensional production activity spaceR + m . The algorithm differs from other algorithms in the number of directions in which the algorithm may leave the starting point. More precisely, the algorithm has 2 n+m+1 –2 rays to leave the starting point, whereas the other algorithms have at most 2 m (n+1) rays. The path of points generated by the algorithm can be interpreted as a globally and universally convergent price and production adjustment process. The process as well as the convergence condition are much more natural and economically meaningful than the adjustment processes obtained by other simplicial algorithms. Furthermore, we apply the algorithm to economies with linear production, economies with constant returns to scale, and economies with increasing returns to scale.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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