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  • *Phototherapy  (1)
  • Depressive Disorder/drug therapy/*therapy  (1)
  • Halophilic Bacteria  (1)
  • Key words Halocins  (1)
  • Lagrangian relaxation  (1)
  • 2000-2004  (4)
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  • 2000-2004  (4)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Halocins: are they involved in the competition between halobacteria in saltern ponds? (2000)
    Springer
    Extremophiles 4 (2000), S. 35-41 
    Details
    ISSN: 1433-4909
    Keywords: Key words Halocins ; Halobacteria ; Salterns
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Many representatives of the family Halobacteriaceae ("halobacteria") excrete halophilic bacteriocins (halocins) that inhibit the growth of other halobacteria. In spite of the fact that halocin production is widespread among the Halobacteriaceae, no information is available on their ecological significance. To test whether halocins may play a role in the interspecies competition between dif-ferent types of halobacteria in saltern crystallizer ponds inhabited by dense communities of these red halophiles, we assayed for halocins active against a variety of halobacteria in salterns from different locations worldwide. Detection of halocin activity was based on the inhibition of growth of indicator organisms on agar plates, the decreased incorporation of radiolabeled substrates, and microscopic examinations. No halocin activity was detected in any of the brines examined, in spite of the fact that halocin production was demonstrated in cultures of most microorganisms isolated from these brines. Thus, the contribution of halocins in the competition between different halobacteria in hypersaline aquatic environments is probably negligible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007920050005
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Comparisons of the polar lipid and pigment profiles of two solar salterns located in Newark, California, U.S.A., and Eilat, Israel (2000)
    Springer
    Extremophiles 4 (2000), S. 259-265 
    Details
    ISSN: 1433-4909
    Keywords: Key words Solar salterns ; Halophilic Archaea ; Halophilic Bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The whole community pigments and lipids have been examined during a 5-year period in two commercial solar salterns located in the United States and in Israel. There were significant differences in the complexity of the lipid and pigment patterns within the California saltern system, and these differences were not consistent over the sampling period despite examination of ponds with the same salinity. The solar saltern system in Eilat, Israel, showed greater consistency during this sampling period and compared directly with previous studies. The complexity of the saltern in Newark, California, could be explained on the basis of the prevailing weather conditions (cooler and more rainfall) and the nutrient-enriched source water. The Eilat saltern, however, has an oligotrophic water source and has a considerably warmer and drier climate. This difference resulted in more diverse and more complex pigment and lipid patterns and presumably microbial populations in the Newark, California, plant than in the saltern in Eilat, Israel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007920070011
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Solving the Unit Commitment Problem by a Unit Decommitment Method (2000)
    Springer
    Journal of optimization theory and applications 105 (2000), S. 707-730 
    Details
    ISSN: 1573-2878
    Keywords: power system scheduling ; unit commitment ; unit decommitment ; mixed-integer programming ; Lagrangian relaxation ; heuristic procedures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, we present a unified decommitment method to solve the unit commitment problem. This method starts with a solution having all available units online at all hours in the planning horizon and determines an optimal strategy for decommitting units one at a time. We show that the proposed method may be viewed as an approximate implementation of the Lagrangian relaxation approach and that the number of iterations is bounded by the number of units. Numerical tests suggest that the proposed method is a reliable, efficient, and robust approach for solving the unit commitment problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004653526131
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  • 4
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    Brightening depression (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-01-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wirz-Justice, Anna -- Terman, Michael -- Oren, Dan A -- Goodwin, Frederick K -- Kripke, Daniel F -- Whybrow, Peter C -- Wisner, Katherine L -- Wu, Joseph C -- Lam, Raymond W -- Berger, Mathias -- Danilenko, Konstantin V -- Kasper, Siegfried -- Smeraldi, Enrico -- Takahashi, Kiyohisa -- Thompson, Chris -- van den Hoofdakker, Rutger H -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):467-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739440" target="_blank"〉PubMed〈/a〉
    Keywords: Antidepressive Agents/therapeutic use ; Combined Modality Therapy ; Depression/drug therapy/*therapy ; Depressive Disorder/drug therapy/*therapy ; Humans ; *Phototherapy ; *Sleep Deprivation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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