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  • 2005-2009  (7)
  • 1985-1989
  • 1930-1934
  • 2005  (7)
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  • 2005-2009  (7)
  • 1985-1989
  • 1930-1934
Year
  • 1
    Electronic Resource
    Electronic Resource
    Altered production and proteolytic processing of brevican by transforming growth factor β in cultured astrocytes (2005)
    Oxford, UK : Blackwell Science Ltd
    Journal of neurochemistry 93 (2005), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Brevican, a proteoglycan of the lectican family, inhibits neurite outgrowth and may also stabilize synapses. Little is known about its expression or function in vitro. This study seeks to determine whether a brevican-containing matrix is present in neural cultures, and if so, how the production of brevican may be modulated. To accomplish this, the content of brevican and its proteolytic fragments were measured in primary cultures of neurons, astrocytes and microglia after treatment with cytokines. These experiments revealed that astrocytes and neurons express several isoforms of brevican, whereas microglia do not produce this proteoglycan. Cleavage fragments of brevican were found primarily in neuronal and astrocyte culture medium. ADAMTS4 (a disintegrin and metalloproteinase with thrombospondin motifs), a protease that selectively cleaves lecticans, was detected in cultures of neurons, astrocytes and microglia. When astrocytes were challenged with various cytokines, it was found that treatment with transforming growth factor β (TGFβ) resulted in a marked increase in intact brevican in the culture medium that was accompanied by a trend for a decrease in ADAMTS-generated fragments of brevican and apparent ADAMTS activity. Thus, TGFβ may play a role in neuronal plasticity through its regulation of brevican and the activity of the ADAMTSs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.2005.03144.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Species diversity patterns of choanoflagellates in the Pettaquamscutt River Estuary, Rhode Island, USA (2005)
    Oxford, UK : Blackwell Science Inc
    The @journal of eukaryotic microbiology 52 (2005), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Choanoflagellates are a large group of heterotrophic protists that play an important role in carbon transfer through the microbial loop, as they consume bacterioplankton and have also been found to be a major food source for macrozooplankton. Although many choanoflagellate species are cosmopolitan, species diversity of the acanthoecid choanoflagellates has been shown to vary substantially between study areas around the globe. A seasonal investigation of acanthoecid species diversity was conducted along the salinity gradient in the Pettaquamscutt River Estuary (PRE), Rhode Island, USA. The taxonomy of the Acanthoecidae is based upon the morphology of a complex basket-like lorica that surrounds the protoplast. Only one previously published study has investigated the diversity of this choanoflagellate family in the western North Atlantic, specifically in the coastal waters of Newfoundland. The Rhode Island survey found that maximum species richness occurred between July and October, and some species exhibited a salinity preference in their distributions, while others had a seasonal shift in occurrence. Acanthocorbis apoda (Leadbeater) Hara and Takahashi, 1984 occurred most consistently throughout the study (55% of samples), while Diaphanoeca grandis Ellis, 1930, Diplotheca costata Valkanov, 1970, Savillea micropora (Norris) Leadbeater, 1975, Stephanoeca cupula (Leadbeater) Thomsen 1988, and Stephanoeca supracostata Hara 1996 were each present in 36-45% of samples. The PRE survey found a four-fold increase in species richness of acanthoecid choanoflagellates over the Canadian study, providing further evidence of the large regional variability in choanoflagellate distributions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.2005.05202003_1_60.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    TURBULENT MIXING (2005)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Fluid Mechanics 37 (2005), S. 329-356 
    Details
    ISSN: 0066-4189
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.fluid.36.050802.122015
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Turning Segways into soccer robots (2005)
    Bradford : Emerald
    Industrial robot 32 (2005), S. 149-156 
    Details
    ISSN: 0143-991X
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Purpose - To adapt the segway RMP, a dynamically balancing robot base, to build robots capable of playing soccer autonomously. Design/methodology/approach - Focuses on the electro-mechanical mechanisms required to make the Segway RMP autonomous, sensitive, and able to control a football. Findings - Finds that turning a Segway RMP into a soccer-playing robot requires a combined approach to the mechanics, electronics and software control. Research implications - Although software algorithms necessary for autonomous operation and infrastructure supplying logging and debugging facilities have been developed, the scenario of humans and robots playing soccer together has yet to be addressed. Practical implications - Turning the model into a soccer playing robot demonstrates the technique of combining mechanics, electronics and software control. Originality/value - Shows how the model as a base platform can be developed into a fully functional, autonomous, soccer-playing robot.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01439910510582273
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    BEYOND THE BELL CURVE: COMMUNITY DISADVANTAGE AND THE EXPLANATION OF BLACK-WHITE DIFFERENCES IN ADOLESCENT VIOLENCE (2005)
    Oxford, UK : Blackwell Publishing Ltd
    Criminology 43 (2005), S. 0 
    Details
    ISSN: 1745-9125
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Law
    Notes: Disproportionate involvement in violent behavior among African American, versus white, adolescents is a major arena of debate in the social sciences. The individual difference approach draws attention to verbal ability as an explanation of black-white differences in violence. Sociological theories stress variation in community and family socioeconomic disadvantage. We contrast these causal images of racial differences in serious violence using the National Longitudinal Survey of Adolescent Health and contextual modeling. Results indicate that verbal ability has an indirect effect on violence through school achievement, but does not account for the greater involvement in violence among black adolescents. The analysis is most consistent with a sociological model that views the race-violence link as a spurious outcome of community context.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-9125.2005.00035.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Corrigendum: A network-based analysis of systemic inflammation in humans (2005)
    [s.l.] : Nature Publishing Group
    Nature 438 (2005), S. 696-696 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nature 437, 1032–1037 (2005) doi:10.1038/nature03985 In this Letter, the affiliations of authors participating in the Inflammation and Host Response to Injury Large Scale Collaborative Research Program are incorrectly listed. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04362
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    A note on occupational variations in the returns to education in the US labor market (2005)
    Bingley : Emerald
    International journal of manpower 26 (2005), S. 450-456 
    Details
    ISSN: 0143-7720
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Purpose - Seeks to answer the question: "do certain occupations offer lower financial benefits to acquiring years of formal schooling than others?". Design/methodology/approach - This study uses data from the 2003 Current Population Survey to estimate rates of return to education across occupational categories in the US labor market. The wage model employed is based on the human capital model of income determination. Findings - The analysis suggests that additional schooling has a positive impact on the weekly earnings of men and women in both white- and blue-collar occupations - with the highest returns accruing to sales, managerial, and professional workers. Although returns are generally higher for white-collar workers, no link is found between the returns to schooling and the propensity of occupations to be comprised of "primary" or "secondary" sector jobs. Originality/value - Supports the notion that additional schooling increases the earnings of men and women in both blue- and white-collar occupations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01437720510615134
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    Paper (German National Licenses)
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