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  • 1
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    Economics and philosophy 7 (1991), S. 289-295 
    ISSN: 0266-2671
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy , Economics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    The @journal of modern African studies 20 (1982), S. 45-67 
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: A 1980 World Bank study paints a bleak picture of the current economic situation in sub-Saharan Africa, where most countries are at the bottom of the development pyramid. They have low incomes per capita, and their rates of economic growth have fallen behind Asian countries of comparable low income. Moreover, population growth in Africa is accelerating while trends in other developing regions suggest a slowing down.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 97 (1975), S. 6689-6692 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 15 (1998), S. 127-131 
    ISSN: 1572-8366
    Keywords: Ethnomedicine ; Ethnoveterinary medicine ; Africa ; Etiology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract It can be shown that considerable common ground exists between indigenous or traditional theories of contagious disease in Africa, and modern medicine, whether human or veterinary. Yet this is not recognized because of the generally low regard in which the medically trained – whether African or expatriate – hold African traditional medicine. This attitude seems to result from the assumption that African health beliefs are based on witchcraft and related “supernatural” thinking. I argue that this may not be so in the important domain of diseases biomedically classified as contagious; such diseases tend to be understood naturalistically. An accurate understanding of how Africans traditionally interpret contagious diseases of humans and livestock is the foundation for the design and implementation of more effective health programs.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Public choice 39 (1982), S. 185-212 
    ISSN: 1573-7101
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Public choice 55 (1987), S. 75-79 
    ISSN: 1573-7101
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 15 (1998), S. 105-114 
    ISSN: 1572-8366
    Keywords: Ethnomedicine ; Veterinary medicine ; Health delivery ; Extension services
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Within a given culture – whether industrialized or more tradition oriented – essentially the same fundamental medical theories, practices, and pharmacopoeia tend to be applied to human and non-human sickness and patients. In modern industrialized societies, however, healthcare services are sharply divided between human and veterinary medicine. There is likewise a sharp division between practitioners in these two health sectors: medical doctors and veterinarians. Yet in non-Western, traditional or indigenous medical systems, the same practitioners often treat both humans and animals. There is a growing body of literature that attests to the efficacy of traditional health practices and herbal medicines for the prevention and treatment of both human and livestock ailments. The authors argue for an intersectoral approach to human and veterinary health services in poor countries, especially those targeted to rural people with LIMITED access to modern health services. Extension of conventional medical and veterinary services is particularly difficult and costly in Third World countries where the necessary infrastructure (roads, clinics, labs, cold chains, etc.) is poorly developed and where much of the populace and their livestock reside in remote, rural areas, or where people may be nomadic or transhumant. Consideration should therefore be given to the joint delivery of human and livestock healthcare and related services, as well as to linking informal, ethnoveterinary practices and practitioners with more formalized systems of veterinary AND medical practice. Several advantages of such an approach are identified and explored.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 58 (1998), S. 215-221 
    ISSN: 0006-3592
    Keywords: butanol ; butyrate ; vector ; complementation ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The genes coding for enzymes involved in butanol or butyrate formation were subcloned into a novel Escherichia coli-Clostridium acetobutylicum shuttle vector constructed from pIMP1 and a chloramphenicol acetyl transferase gene. The resulting replicative plasmids, referred to as pTHAAD (aldehyde/alcohol dehydrogenase) and pTHBUT (butyrate operon), were used to complement C. acetobutylicum mutant strains, in which genes encoding aldehyde/alcohol dehydrogenase (aad) or butyrate kinase (buk) had been inactivated by recombination with Emr constructs. Complementation of strain PJC4BK (buk mutant) with pTHBUT restored butyrate kinase activity and butyrate production during exponential growth. Complementation of strain PJC4AAD (aad mutant) with pTHAAD restored NAD(H)-dependent butanol dehydrogenase activity, NAD(H)-dependent butyraldehyde dehydrogenase activity and butanol production during solventogenic growth. The development of an alternative selectable marker makes it is possible to overexpress genes, via replicative plasmids, in mutant strains that lack specific enzyme activities, thereby expanding the number of possible genetic manipulations that can be performed in C. acetobutylicum. © 1998 John Wiley & Sons, Inc. Biotechnol Bioeng 58:215-221, 1998.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Publication Date: 2015-06-29
    Description: Under standard laboratory conditions of rectangular light/dark cycles and constant warm temperature, Drosophila melanogaster show bursts of morning (M) and evening (E) locomotor activity and a “siesta” in the middle of the day. These M and E components have been critical for developing the neuronal dual oscillator model in which clock gene expression in key cells generates the circadian phenotype. However, under natural European summer conditions of cycling temperature and light intensity, an additional prominent afternoon (A) component that replaces the siesta is observed. This component has been described as an “artifact” of the TriKinetics locomotor monitoring system that is used by many circadian laboratories world wide. Using video recordings, we show that the A component is not an artifact, neither in the glass tubes used in TriKinetics monitors nor in open-field arenas. By studying various mutants in the visual and peripheral and internal thermo-sensitive pathways, we reveal that the M component is predominantly dependent on visual input, whereas the A component requires the internal thermo-sensitive channel transient receptor potential A1 (TrpA1). Knockdown of TrpA1 in different neuronal groups reveals that the reported expression of TrpA1 in clock neurons is unlikely to be involved in generating the summer locomotor profile, suggesting that other TrpA1 neurons are responsible for the A component. Studies of circadian rhythms under seminatural conditions therefore provide additional insights into the molecular basis of circadian entrainment that would otherwise be lost under the usual standard laboratory protocols.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 10
    Publication Date: 2017-02-07
    Description: Stern has criticized a body of work from several groups that have independently studied the so-called “Kyriacou and Hall” courtship song rhythms of maleDrosophila melanogaster,claiming that these ultradian ∼60-s cycles in the interpulse interval (IPI) are statistical artifacts that are not modulated by mutations at theperiod(per) locus [Stern DL (2014)BMC Biol12:38]. We have scrutinized Stern’s raw data and observe that his automated song pulse-detection method identifies only ∼50% of the IPIs found by manual (visual and acoustic) monitoring. This critical error is further compounded by Stern’s use of recordings with very little song, the large majority of which do not meet the minimal song intensity criteria which Kyriacou and Hall used in their studies. Consequently most of Stern’s recordings only contribute noise to the analyses. Of the data presented by Stern, onlyperLand a small fraction of wild-type males sing vigorously, so we limited our reanalyses to these genotypes. We manually reexamined Stern’s raw song recordings and analyzed IPI rhythms using several independent time-series analyses. We observe thatperLsongs show significantly longer song periods than wild-type songs, with values for both genotypes close to those found in previous studies. Theseper-dependent differences disappear when the song data are randomized. We conclude that Stern’s negative findings are artifacts of his inadequate pulse-detection methodology coupled to his use of low-intensity courtship song records.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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