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  • Articles  (1,895)
  • Articles: DFG German National Licenses  (1,895)
  • 2000-2004  (844)
  • 1950-1954  (517)
  • 1930-1934  (289)
  • 1925-1929  (245)
  • Process Engineering, Biotechnology, Nutrition Technology  (1,218)
  • Economics  (677)
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  • Articles  (1,895)
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  • 1
    Electronic Resource
    Electronic Resource
    SWARD: decision support processes for the UK water industry (2003)
    Bradford, West Yorkshire : Emerald
    Management of environmental quality 14 (2003), S. 444-459 
    Details
    ISSN: 1477-7835
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: In industrialised countries water service providers (WSPs) must provide an appropriate level of service with an acceptable performance at an acceptable cost to customers. In the UK a move towards sustainable development is now also a major goal for WSPs. However, the imposition of institutional systems and regulatory targets still encourage the adoption of less sustainable technologies or solutions by the water industry. It is within this context, that the Sustainable Water industry Asset Resource Decisions (SWARD) project has developed a set of decision support processes that allow WSPs to assess the relative sustainability of water/wastewater system asset development decisions. A Guidebook has been produced that takes the WSP and its stakeholders through the processes essential to incorporating sustainability in asset investment decision-making. Several case studies that demonstrate the SWARD principles in application are included within the Guidebook, the experience of which is described in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/14777830310488676
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  • 2
    Electronic Resource
    Electronic Resource
    An Analysis of the Distribution of Extreme Share Returns in the UK from 1975 to 2000 (2004)
    Oxford, UK; Malden, USA : Blackwell Publishing Ltd/Inc.
    Journal of business finance & accounting 31 (2004), S. 0 
    Details
    ISSN: 1468-5957
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper seeks to characterise the distribution of extreme returns for a UK share index over the years 1975 to 2000. In particular, the suitability of the following distributions is investigated: Gumbel, Frechet, Weibull, Generalised Extreme Value, Generalised Pareto, Log-Normal and Generalised Logistic. Daily returns for the FT All Share index were obtained from Datastream, and the maxima and minima of these daily returns over a variety of selection intervals were calculated. Plots of summary statistics for the weekly maxima and minima on statistical distribution maps suggested that the best fitting distribution would be either the Generalised Extreme Value or the Generalised Logistic. The results from fitting each of these two distributions to extremes of a series of UK share returns support the conclusion that the Generalised Logistic distribution best fits the UK data for extremes over the period of the study. The Generalised Logistic distribution has fatter tails than either the log-normal or the Generalised Extreme Value distribution, hence this finding is of importance to investors who are concerned with assessing the risk of a portfolio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0306-686X.2004.00551.x
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  • 3
    Electronic Resource
    Electronic Resource
    Field tests on managing resistance to Bt -engineered plants (2000)
    [s.l.] : Nature America Inc.
    Nature biotechnology 18 (2000), S. 339-342 
    Details
    ISSN: 1546-1696
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: [Auszug] Several important crops have been engineered to express toxins of Bacillus thuringiensis (Bt) for insect control. In 1999, US farmers planted nearly 8 million hectares (nearly 20 million acres) of transgenic Bt crops approved by the EPA. Bt-transgenic plants can greatly reduce the use of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/73804
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  • 4
    Electronic Resource
    Electronic Resource
    Sequence of PHA synthase gene from two strains of Rhodospirillum rubrum and in vivo substrate specificity of four PHA synthases across two heterologous expression systems (2000)
    Springer
    Applied microbiology and biotechnology 53 (2000), S. 420-429 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A 3.0-kb genomic fragment has been isolated from Rhodospirillum rubrum (ATCC 25903) that contains an open reading frame (ORF) with strong homology to other known polyhydroxyalkanoate (PHA) synthase genes. This ORF has lower homology to the R. rubrum strain Ha PHA synthase than would be expected within the same species. We have conducted a series of heterologous expression studies evaluating the in vivo substrate specificity of PHA synthase genes from Rhodobacter sphaeroides, Ralstonia eutropha (formerly Alcaligenes eutrophus), Thiocystis violacea, and Nocardia corrallina, within the PHA-synthase-negative hosts, Ralstonia eutropha DSM541 and Pseudomonas putida GpP104. The N. corrallina PHA synthase incorporated the highest percentage of C5 monomers in the polymer when fermented in medium supplemented with 0.1% heptanoate as the sole carbon source. When the T. violacea and R. sphaeroides were expressed in the PHA-negative host DSM541, a greater percentage of C5 monomer was observed in the polymer as compared to the expression of the PHA synthase of R. eutropha, when the transconjugants were fermented in medium supplemented with 0.4% propionate. Evaluation for preference of medium-chain-length monomers demonstrated the flexibility of the N. corrallina, T. violacea, and R. eutropha synthase genes to polymerize a copolyester composed of short- and medium-chain-length monomers when the respective transconjugants were fermented in medium supplemented with 0.5% octanoate. These studies demonstrate that the PHA synthase from N. corrallina, T. violacea, and R. eutropha are able to polymerize a copolyester composed of short- and medium-chain-length monomers, while the PHA synthase from R. sphaeroides lacks this ability and only produces a short-chain-length polymer. These observations suggest that the composition of the PHA from the PHA-producing organisms does not necessarily reflect the inherent specificity of the PHA synthase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051636
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  • 5
    Electronic Resource
    Electronic Resource
    Purification, characterization, and primary structure of a chitinase from Pseudomonas sp. YHS-A2 (2000)
    Springer
    Applied microbiology and biotechnology 54 (2000), S. 397-405 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A chitinase gene (chiA) from Pseudomonas sp. YHS-A2 was cloned into Escherichia coli using pUC19. The nucleotide sequence determination revealed a single open reading frame of chiA comprised of 1902 nucleotide base pairs and 633 deduced amino acids with a molecular weight of 67,452 Da. Amino acid sequence alignment showed that ChiA contains two putative chitin-binding domains and a single catalytic domain. Two proline-threonine repeat regions, which are linkers between catalytic and substrate-binding domains in some cellulases and xylanases, were also found. From E. coli, ChiA was purified 12.8-fold relative to the periplasmic fraction. The Michaelis constant and maximum initial velocity for p-nitrophenyl-N,N′-diacetylchitobiose were 1.06 mM and 44.4 μmol/h per mg protein, respectively. The purified ChiA binds not only to colloidal chitin but also to other substrates (avicel, chitosan, and xylan), but the binding affinity of avicel, chitosan, and xylan is around 10 times lower than that of colloidal chitin. The reaction of ChiA with colloidal chitin and chitooligosaccharides (trimer-hexamer) produced an end product of N,N′-diacetylchitobiose, indicating that ChiA is a chitobiosidase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530000408
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  • 6
    Electronic Resource
    Electronic Resource
    Glutathione-mediated mineralization of 14C-labeled 2-amino-4,6-dinitrotoluene by manganese-dependent peroxidase H5 from the white-rot fungus Phanerochaete chrysosporium (2000)
    Springer
    Applied microbiology and biotechnology 54 (2000), S. 659-664 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Manganese-dependent peroxidase (MnP) H5 from the white-rot fungus Phanerochaete chrysosporium, in the presence of either Mn(II) (10 mM) or GSH (10 mM), was able to mineralize 14C-U-ring-labeled 2-amino-4,6-dinitrotoluene (2-A-4,6-DNT) up to 29% in 12 days. When both Mn(II) and GSH were present, the mineralization extent reached 82%. On the other hand, no significant mineralization was observed in the absence of both Mn(II) and GSH, suggesting the requirement of a mediator [either Mn(II) or GSH] for the degradation of 2-A-4,6-DNT by MnP. Using electron spin resonance (ESR) techniques, it was found that the glutathionyl free radical (GS•) was produced through the oxidation of GSH by MnP in the presence as well as in the absence of Mn(II). GS• was also generated through the direct oxidation of GSH by Mn(III). Our results strongly suggest the involvement of GS• in the GSH-mediated mineralization of 2-A-4,6-DNT by MnP.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530000436
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  • 7
    Electronic Resource
    Electronic Resource
    Correcting Personality Tests for Faking: A Review of Popular Personality Tests and an Initial Survey of Researchers (2003)
    Oxford, UK : Blackwell Publishing
    International journal of selection and assessment 11 (2003), S. 0 
    Details
    ISSN: 1468-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: We reviewed a number of personality tests that are commonly used for personnel selection and found that some of the more popular tests provide a “correction” for faking. Additionally, a survey of researchers' preferences regarding correcting personality test scores for faking was conducted. The respondents, who were experienced in using personality tests for industrial-organizational purposes, generally favored the use of faking corrections (69% were in favor). The apparently common practice of correcting personality scores for faking was contrasted with relevant conceptual, empirical, and statistical concerns as to the advisability of applying the correction for faking.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0965-075X.2003.00256.x
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  • 8
    Electronic Resource
    Electronic Resource
    A new physical test for vulcanized rubber (1929)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 1 (1929), S. 17-20 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50065a007
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  • 9
    Electronic Resource
    Electronic Resource
    Method for determination of fluorine in phosphate rock and phosphatic slags (1931)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 3 (1931), S. 366-370 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50076a015
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  • 10
    Electronic Resource
    Electronic Resource
    An Evaporation Rate Method Applied to Petroleum Thinners (1934)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 6 (1934), S. 421-422 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50092a014
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