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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 43 (1995), S. 38-45 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Sedimentology 42 (1995), S. 0 
    ISSN: 1365-3091
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Laboratory experiments indicate that clay particles of the 〈2-üm fraction can be considerably degraded by the bivalve Mytilus edulis: dickite, kaolinite, smectite, chlorite and illite particles are partially dissolved and rounded by the digestive processes. Structural changes and a decrease in crystallinity of kaolinites, dickites and illites are striking.Investigations of clay minerals from tidal flat sediments highly populated by marine invertebrates, from marine suspensions and samples from profiles across Mytilis edulis beds on the North Sea coast of Germany show, however, that these materials have a uniform mineral composition. This uniformity of clay mineralogy can be explained by the hydrodynamic conditions in the nearshore area, where tidal currents and waves cause a periodic resuspension and transport of sediments introduced into the Wadden Sea from different sources (glacial, fluviatile). Processes of bioturbation also redistribute the sedimentary material. These mixing processes effectively erase any evidence of local enrichment of the biogenically degraded clays. However, the disordered clays should react more sensitively (i.e. have higher adsorption capacities for organic substances, hydroxides and metals) in sediments than untreated materials, so that biodegradation is of basic importance for clay diagenesis. During these processes, Pb, V, Ni and Fe are dissolved from the digested particles.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The three-dimensional structure of the regular surface protein (p4 symmetry, lattice constant a=b=10.5 nm) of Comamonas acidovorans has been determined to a resolution of about 1.5 nm by means of electron microscopy and image processing. Three-dimensional reconstructions were performed using native outer membranes and artificial two-dimensional crystals of the surface protein, which was selectively solubilized by deoxycholate and recrystallized on carbon films. The two-fold symmetric morphological complex is composed of two identical monomers which are in tight contact with the outer membrane and presumably anchored to it by a small hydrophobic domain.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 307 (1984), S. 378-380 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Blood was freshly drawn from the fingertip and diluted in 1 mM phosphate buffer (pH7.5), containing 300 mM D-mannitol and 5 mM glucose. For the trypsin treatment the cells were incubated at 37 C for 30 min after addition of 10 p.p.m. trypsin and 4 p.p.m. EDTA to the solution. The cell suspension ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillian Magazines Ltd.
    Nature 419 (2002), S. 465-467 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fast-flowing ice streams transport ice from the interior of West Antarctica to the ocean, and fluctuations in their activity control the mass balance of the ice sheet. The mass balance of the Ross Sea sector of the West Antarctic ice sheet is now positive—that is, it is ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biophysical Chemistry 29 (1988), S. 39-49 
    ISSN: 0301-4622
    Keywords: Bacterial surface protein ; Electron microscopy ; Macromolecular recognition ; Outer membrane protein ; Shape determination
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    Social philosophy & policy 17 (2000), S. 120-140 
    ISSN: 0265-0525
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy , Political Science , Sociology
    Notes: Of all the moral concerns regarding privacy in its various meanings, this essay selects only one: the right to be left alone by others, in particular, by government. Because moral controversies in pluralist societies tend to be interminable, and surely controversies regarding privacy are no exception, I approach the right to privacy in terms of the centrality of persons. When there are foundational disputes about which content-full moral view should govern, it is not possible to resolve such controversies without begging the question or conceding at the outset crucial moral premises. This observation is not to affirm a moral skepticism or relativism. At worst, it involves an epistemic skepticism, a skepticism about the possibility of resolving controversies by sound rational argument without begging the question or engaging in an infinite regress.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    Social philosophy & policy 14 (1997), S. 180-196 
    ISSN: 0265-0525
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy , Political Science , Sociology
    Notes: In his 1993 health-care reform proposal, Bill Clinton offered health care as a civil right. If his proposal had been accepted, all Americans would have been guaranteed a basic package of health care. At the same time, they would have been forbidden to provide or purchase better basic health care, as a cost of participating in a national system to which they were compelled to contribute. A welfare entitlement would have been created and an egalitarian ethos enforced. This essay will address why such egalitarian proposals are morally unjustifiable, both in terms of the establishment of a uniform health-care welfare right, and in terms of the egalitarian constraints these proposals impose against the use of private resources in the purchase of better-quality basic health care, not to mention luxury care.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    Social philosophy & policy 8 (1990), S. 180-191 
    ISSN: 0265-0525
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy , Political Science , Sociology
    Notes: This essay is meant as a form of philosophical exorcism. The goal is to dispel the view that there are general secular grounds for holding human germline genetic engineering to be intrinsically wrong, a malum in se, or a morally culpable violation of human nature. The essay endorses the view that major obligations of prudence and care attend the development of this technology. However, these justifiable moral concerns can be seen more clearly when one has dispelled what must, from a secular perspective, be regarded as pseudo-issues.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    Social philosophy & policy 13 (1996), S. 47-62 
    ISSN: 0265-0525
    Source: Cambridge Journals Digital Archives
    Topics: Philosophy , Political Science , Sociology
    Notes: The prospect of germ-line genetic engineering, the ability to engineer genetic changes that can be passed on to subsequent generations, raises a wide range of moral and public policy questions. One of the most provocative questions is, simply put: Are there moral reasons that can be articulated in general secular terms for accepting human nature as we find it? Or, at least in terms of general secular moral restraints, may we reshape human nature better to meet our own interests, as we define them? This question in turn raises the further question of whether human nature as it now exists has a moral standing akin to sacredness that can be understood in nonreligious terms. This essay will take as a given that it is not possible to show in general secular moral terms that human nature has a sanctity or special moral standing that should guide secular health-care policy. In addition, as this essay shows, it is not possible through appeals to considerations of authorizing consent or beneficence toward others to remedy this failure to establish a sanctity or special moral standing for human nature. Absent a religious or culturally normative understanding of human nature and given the availability of germline genetic engineering, there is a plurality of possibilities for refashioning our nature. The unavailability of substantive secular moral constraints on germ-line genetic engineering discloses a secularly licit plurality of possibilities for human nature. The likelihood that we will be able to refashion our human nature reveals how few general secular moral constraints there are to guide us. Paradoxically, the more we are able to reengineer our human nature, the less guidance is available. The plurality of possible conceptions of human well-being that can be pursued through germ-line genetic engineering challenges our self-understanding as humans. Given human freedom, and in the absence of taken-for-granted religious or cultural moral constraints, the likelihood of germ-line genetic engineering opens the possibility of human nature in the plural.
    Type of Medium: Electronic Resource
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