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  • 2000-2004  (84)
  • 1935-1939  (14)
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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Anthropology 31 (2002), S. 69-97 
    ISSN: 0084-6570
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Ethnic Sciences , Biology
    Notes: Abstract Because of their deafness, deaf people have been marked as different and treated problematically by their hearing societies. Until 25 years ago, academic literature addressing deafness typically described deafness as pathology, focusing on cures or mitigation of the perceived handicap. In ethnographic accounts, interactions involving deaf people are sometimes presented as examples of how communities treat atypical members. Recently, studies of deafness have adopted more complex sociocultural perspectives, raising issues of community identity, formation and maintenance, and language ideology. Anthropological researchers have approached the study of d/Deaf communities from at least three useful angles. The first, focusing on the history of these communities, demonstrates that the current issues have roots in the past, including the central role of education in the creation and maintenance of communities. A second approach centers on emic perspectives, drawing on the voices of community members themselves and accounts of ethnographers. A third perspective studies linguistic issues and how particular linguistic issues involving deaf people articulate with those of their hearing societies. To use a cultural definition is not only to assert a new frame of reference, but to consciously reject an older one.... But the cultural definition continues to perplex many. If Deaf people are indeed a cultural group, why then don't they seem more like the Pennan of the island of Borneo, or the Huichol of Mexico? Carol Padden (1996a)
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Burkholderia pseudomallei is the causative agent of melioidosis, a serious infectious disease of humans and animals that is endemic in subtropical areas. B. pseudomallei is a facultative intracellular pathogen that may invade and survive within eukaryotic cells for prolonged periods. After internalization, the bacteria escape from endocytic vacuoles into the cytoplasm of infected cells and form membrane protrusions by inducing actin polymerization at one pole. It is believed that survival within phagocytic cells and cell-to-cell spread via actin protrusions is required for full virulence. We have studied the role of a putative type III protein secretion apparatus (Bsa) in the interaction between B. pseudomallei and host cells. The Bsa system is very similar to the Inv/Mxi-Spa type III secretion systems of Salmonella and Shigella. Moreover, B. pseudomallei encodes proteins that are very similar to Salmonella and Shigella Inv/Mxi-Spa secreted proteins required for invasion, escape from endocytic vacuoles, intercellular spread and pathogenesis. Antibodies to putative Bsa-secreted proteins were detected in convalescent serum from a melioidosis patient, suggesting that the system is functionally expressed in vivo. B. pseudomallei mutant strains lacking components of the Bsa secretion and translocation apparatus were constructed. The mutant strains exhibited reduced replication in J774.2 murine macrophage-like cells, an inability to escape from endocytic vacuoles and a complete absence of formation of membrane protrusions and actin tails. These findings indicate that the Bsa type III secretion system plays an essential role in modulating the intracellular behaviour of B. pseudomallei.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Many plants and animals are capable of developing in a variety of ways, forming characteristics that are well adapted to the environments in which they are likely to live. In adverse circumstances, for example, small size and slow metabolism can facilitate survival, whereas larger size and more ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    European journal of soil science 53 (2002), S. 0 
    ISSN: 1365-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Dynamic simulation models are important tools for rationalizing complex changes in soil organic matter. Most such models for organic matter can be described as having either a pool structure or a continuous one. A pool structure can offer advantages in ease of use and transferability. Some pools are easily measured, whereas others cannot be measured directly. New methods of fractionation are being developed in an attempt to base models on measurable fractions. A requirement for such models is a demonstration that the measured fraction and model pool are equivalent. A measured fraction is equivalent to a model pool only if, within acceptable limits, it is unique as well as non-composite. If the measured fraction is not unique, describing it as a separate pool adds no extra information, while the added complexity can increase propagation of errors. If it is composite then the characteristics of the fraction will change with changing environment as a result of changing proportions of subpools. This will produce a model that cannot be applied without deriving parameters afresh: such a model is of greatly reduced value. Here we develop methods to examine if a fraction is both unique and non-composite. The tests for unique and composite pools were applied to the SUNDIAL (simulation of nitrogen dynamics in arable land) model of organic matter and nitrogen turnover in soil. Results suggest that the debris, biomass and humus pools are unique, but biomass and humus are composed of two or more subpools. This worked example illustrates how, given suitable data, any pool-based model can be tested by these methods.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 29 (1937), S. 1009-1011 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 40 (1936), S. 1063-1070 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 12 (2000), S. 622-630 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper we study the dynamics of a system consisting of a heavy box sinking vertically into water. The classic configuration is due to Scott Russell who used the sinking box in 1844 to illustrate the formation of a solitary wave in a long rectangular tank. We use a combination of computer simulation and experiment to clarify details of the wave formation and the dynamics of the sinking box. We find that as the box sinks the water is heaved up to form both the solitary wave and a reverse plunging wave which forms a vortex. This vortex follows the wave down the tank. The computer simulation uses the particle method smoothed particle hydrodynamics (SPH) which allows us to follow the formation of the waves and the dynamics of the box. The simulation results are in satisfactory agreement with the experiments. We derive scaling relations for the velocity of the box and for the amplitude of the solitary wave. These scaling relations are in reasonable agreement with the experiments and the simulations. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 39 (1935), S. 925-934 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 39 (1935), S. 935-940 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 39 (1935), S. 585-592 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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