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  • 2005-2009  (2)
  • 1985-1989  (3)
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Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    The Kinetics of some Pressure-Induced Transformations (1985)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 3 (Jan. 1985), p. 291-306 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/03/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.3.291.pdf
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A class of glyphosate-selected mutants of the cyanobacterium Nostoc muscorum showing loss of ammonium transport activity (Amt−), heterocyst formation (Het−) and nitrogenase activity (Nif−) (1989)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 60 (1989), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Glyphosate was considerably more growth inhibitory to N2-assimilating than to ammonium-assimilating cultures of N. muscorum. The herbicide, while inhibiting nitrogenase activity and ammonium [14C]-methylammonium) uptake activity caused significant increase in the biosynthetic activity of in vivo glutamine synthetase (GS) in N2-assimilating or ammonium-assimilating cultures and nearly 50% derepression of heterocyst formation and nitrogenase activity in ammonium assimilating cultures. The differential toxicity of the herbicide to N2-fixing cultures led us to use this herbicide as selective agent to isolate a class of mutant clones on ammonium-supplemented medium which lacked heterocyst differentiation (Het−), nitrogenase activity (Nif−) and ammonium [14C]-methylammonium) uptake activity (Amt−). It is concluded that heterocyst differentiation, nitrogenase activity and ammonium uptake activity are all under the regulatory control of common genetic determinants in the cyanobacterium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1989.tb03443.x
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Isolation, characterization and expression of a novel vegetative insecticidal protein gene of Bacillus thuringiensis (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 243 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Twenty-four serovars of Bacillus thuringiensis (Bt) were screened by polymerase chain reaction to detect the presence of vegetative insecticidal protein gene (vip)-like sequences by using vip3Aa1-specific primers. vip-like gene sequences were identified in eight serovars. These genes were cloned and sequenced. The deduced amino acid sequence of the vip3Aa14 gene from Bacillus thuringiensis tolworthi showed considerable differences as compared to those of Vips reported so far. The vip3Aa14 gene from Bt tolwarthi was expressed in Escherichia coli using expression vector pET29a. The expressed Vip3Aa14 protein was found in cytosolic supernatant as well as pellet fraction, but the protein was more abundant in the cytosolic supernatant fraction. Both full-length and truncated (devoid of signal sequence) Vips were highly toxic to the larvae of Spodoptera litura and Plutella xylostella. Truncation of Vip3Aa14 protein at N-terminus did not affect its insecticidal activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2005.01.011
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Prediction of Thermal Conductivity of Fruit Juices by a Thermal Resistance Model (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 54 (1989), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A model for prediction of thermal conductivity of fruit juices was developed. The model was based on the concept of thermal resistances in parallel and compared with other models and experimental values. Effect of temperature and solid concentration on thermal conductivity was discussed. Extension of the model to predict thermal conductivity of fruit juices below the freezing temperature was briefly discussed. The model gave error of less than 10% from the experimental values for juices for which such values were available.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1989.tb07933.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Study of avalanche breakdown (MI) mode in sub micron MOSFET device (2005)
    Bingley : Emerald
    Microelectronics international 22 (2005), S. 16-20 
    Details
    ISSN: 1356-5362
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Purpose - To study the breakdown (MI) mechanism in the sub-micron MOSFET device. Design/methodology/approach - Second-order Poisson's differential equation is solved for suitable boundary condition to find the electric field expression for the sub-micron devices. With the help of the electric field expression the exact relation for multiplication factor is derived, and then the equation for breakdown voltage has been generated. Findings - This research paper provides the following findings: by controlling oxide thickness, junction depth and drain voltage, the breakdown can be easily controlled in the sub-micron device; multiplication factor is not only affected by maximum field but also due to critical field; for very low gate voltage, the offset voltage mainly governs the breakdown; the breakdown voltage increases continuously as the channel length increases. It means, for larger channel length the breakdown will occur at high drain voltage. Research limitation - This paper is based on the assumption that the electric field along the channel is independent of the junction depth (although not correct) and varying linearly from zero to Esat. Orginality/value - The paper derived the exact expression of the multiplication factor. Also discusses that for MI mode of breakdown, the breakdown voltage increases slowly with the gate voltage and approximated by drain saturation voltage plus offset voltage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/13565360510575503
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    Paper (German National Licenses)
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