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  • 1
    Electronic Resource
    Electronic Resource
    New Amine Trithiolate Tripod Ligand and Its Iron(II) and Iron(III) Complexes (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 8468-8469 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00137a024
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  • 2
    Electronic Resource
    Electronic Resource
    Executive Values and Decision Making: The Relationship of Culture and Information Flows (1999)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    Journal of management studies 36 (1999), S. 0 
    Details
    ISSN: 1467-6486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The effect of culture on work values has been studied in a number of ways, largely from a western perspective. Studies have predominantly employed questionnaires as the principal agent of data collection. Yet the Confucian work ethic attributes greater emphasis to collectivist values which bear more centrally on personal relationships. This research used discourse analysis in order to try to identify the implicit features of cultural values as they affected the transmission of financial information, a problem highlighted by the Asian currency crisis in 1997/98.The international hotel industry operates in a multicultural environment where very often foreign operators manage locally owned premises. In these circumstances, budgetary planning and control is an important mechanism. A sample of the interactions between 18 hotel general managers and their financial controllers were studied in Hong Kong. Financial controllers are already subject to a number of role conflicts and it was found that these may be exaggerated by culture.Chinese financial controllers seem to distort the outputs of budgetary planning and control processes in recognition of important organizational relationships. It is suggested that recognizing the direction and effect of these relationships has implications for leadership and performance judgements generally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1467-6486.00134
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  • 3
    Electronic Resource
    Electronic Resource
    Molecular genetics and transport analysis of the copper-resistance determinant (pco) from Escherichia coli plasmid pRJ1004 (1995)
    Osney Mead, Oxford OX2 0EL, UK : Blackwell Scientific Publications
    Molecular microbiology 17 (1995), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The copper-resistance determinant (pco) of Escherichia coli plasmid pRJ1004 was cloned and sequenced. Tn1000 transposon mutagenesis identified four complementation groups, mutations in any of which eliminated copper resistance. DNA sequence analysis showed that the four complementation groups contained six open reading frames, designated pcoABCDRS. The protein product sequences derived from the nucleotide sequence show close homology between this copper-resistance system and the cop system of a plasmid pPT23D of Pseudomonas syringae pv. tomato. The PcoR and PcoS protein sequences show homology to the family of two-component sensor/responder phosphokinase regulatory systems. A seventh reading frame (pcoE) was identified from DNA sequence data, and lies downstream of a copper-regulated promoter. Transport assays with 64Cu(II) showed that the resistant cells containing the plasmid had reduced copper accumulation during the log phase of growth, while increased accumulation had previously been observed during stationary phase. Chromosomal mutants defective in cellular copper management were obtained and characterized. In two of these mutants pco resistance was rendered totally inactive, whilst in another two mutants pco complemented the defective genes. These data indicate that plasmid-borne copper resistance in E. coli is linked with chromosomal systems for copper management.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.1995.mmi_17061153.x
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  • 4
    Electronic Resource
    Electronic Resource
    Custom computing machines: An introduction (1995)
    Springer
    The journal of supercomputing 9 (1995), S. 219-229 
    Details
    ISSN: 1573-0484
    Keywords: Custom computing machine ; FPGA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract We present a brief introduction to custom computing machines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01212869
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  • 5
    Electronic Resource
    Electronic Resource
    Intermediates in the folding of the membrane protein bacteriorhodopsin (1995)
    [s.l.] : Nature Publishing Group
    Nature structural biology 2 (1995), S. 139-143 
    Details
    ISSN: 1072-8368
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Assembly of proteins within lipid bilayers is essential for the biogenesis and function of biological membranes. Little is known, however, about the underlying mechanism of assembly, and it is not clear whether it is possible to observe individual folding steps for integral membrane proteins either ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nsb0295-139
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  • 6
    Electronic Resource
    Electronic Resource
    Evidence that skewed X inactivation is not needed for the phenotypic expression of Aicardi syndrome (1997)
    Springer
    Human genetics 〈Berlin〉 100 (1997), S. 459-464 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Aicardi syndrome is a rare disorder characterized by absent corpus callosum, infantile spasms, and chorioretinal lacunae. It is sporadic in nature and affects only females, resulting in severe mental and physical handicap. It has been suggested that the disease is caused by a dominant X-linked mutation which occurs de novo in females, and is lethal in hemizygous male embryos. This mode of inheritance has been observed in a number of other rare syndromes. In these syndromes, when X inactivation is studied, a non-random pattern is usually found. We have studied the X inactivation pattern in ten female patients with Aicardi syndrome and their parents using the highly polymorphic, differentially methylated androgen receptor gene. The results showed an unexpected random X-inactivation pattern in these patients. Previous clinical and cytogenetic evidence suggests that Aicardi syndrome is caused by an X-linked dominant mutation, de novo in females and lethal in males. However, unlike most other known X-linked disorders inherited in this fashion, Aicardi syndrome patients have a normal (i.e., random) X-inactivation pattern. A number of possible explanations is proposed for this apparently contradictory evidence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004390050534
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  • 7
    Electronic Resource
    Electronic Resource
    The effect of elevated CO2 concentration and nutrient supply on carbon-based plant secondary metabolites in Pinus sylvestris L. (1998)
    Springer
    Oecologia 115 (1998), S. 344-350 
    Details
    ISSN: 1432-1939
    Keywords: Key words Carbon-nutrient balance ; Elevated CO2 ; Pinus sylvestris L. ; Tannins ; Terpenes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This study investigated changes in carbon-based plant secondary metabolite concentrations in the needles of Pinus sylvestris saplings, in response to long-term elevation of atmospheric CO2, at two rates of nutrient supply. Experimental trees were grown for 3 years in eight open-top chambers (OTCs), four of which were maintained at ambient (∼350 μmol mol−1) and four at elevated (700 μmol mol−1) CO2 concentrations, plus four open air control plots. Within each of these treatments, plants received either high (7.0 g N m−2 year−1 added) or low (no nutrients added) rates of nutrient supply for two years. Needles from lateral branches were analysed chemically for concentrations of condensed tannins and monoterpenes. Biochemical determinations of cellulase digestibility and protein precipitating capacity of their phenolic extracts were made because of their potential of importance in ecological interactions between pine and other organisms including herbivores and decomposers. Elevated CO2 concentration caused an increase (P〈0.05) in dry mass per needle, tree height and the concentration of the monoterpene α-pinene, but there were no direct effects of CO2 concentration on any of the other chemical measurements made. High nutrient availability increased cellulase digestibility of pine needles. There was a significant negative effect of the OTCs on protein precipitating capacity of the needle extracts in comparison to the open-air controls. Results suggest that predicted changes in atmospheric CO2 concentration will be insufficient to produce large changes in the concentration of condensed tannins and monoterpenes in Scots pine. Processes which are influenced by these compounds, such as decomposition and herbivore food selection, along with their effects on ecosystem functioning, are therefore unlikely to be directly affected through changes in these secondary metabolites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004420050526
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  • 8
    Electronic Resource
    Electronic Resource
    Land/water ecotone effects in reservoirs on the fish fauna (1995)
    Springer
    Hydrobiologia 303 (1995), S. 11-30 
    Details
    ISSN: 1573-5117
    Keywords: fish ; reservoirs ; ecotones ; littoral area ; temperate ; tropical
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The morphology and function of one tropical and 25 temperate reservoirs are examined in relation to their effect upon the nature of the land/water interface and, further, to what extent the features of these ecotones satisfy the ecological requirements of the reservoir fish species throughout their life cycle during spawning, larval, juvenile and adult stages. The two main conclusions are that (1) reservoir fish species are especially dependent upon land/water ecotones during their early life history and (2) there exists a strong relationship between the extent of the littoral area and the nature of the fish stocks. Several examples are given to show that manipulation of the land/water ecotone is a major tool for the management of reservoirs advantageously for their major functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00034040
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  • 9
    Electronic Resource
    Electronic Resource
    Phylogeny of Vicia Subgenus Vicia (Fabaceae) Based on Analysis of RAPDs and RFLP of PCR-Amplified Chloroplast Genes (1999)
    Springer
    Genetic resources and crop evolution 46 (1999), S. 149-161 
    Details
    ISSN: 1573-5109
    Keywords: evolution ; genetic resources ; PCR-RFLP ; RAPDs ; Vicia ; taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract We report the results of two methods of DNA analysis to elucidate phylogenetic relationships among 29 Vicia subgen. Vicia species in comparison with two species of subgenus Vicilla sect. Vicilla. The methods employed were RAPD analysis of total genomic DNA and PCR-RFLP analysis of five chloroplast genes, rbcL, rpoB, 16S, psaA and trnK. The results of each method were similar and complementary, and support the current taxonomic systems of subsp. Vicia. According to RAPD and PCR-RFLP analysis the Narbonensis complex can be considered a well separated section, which may be related to section Vicia. Sections Vicia, Atossa and Wiggersia are separate, but closely related sections. Species of the section Hypechusa form a single monophyletic section, where V. lutea, V. anatolica and V. hyrcanica are quite remote from other species. Our results suggest that within the subgenus Vicia, V. faba is more closely related to V. bithynica and that these two species are most closely related to section Peregrinae. We found that PCR-RFLP of cp DNA provided more precise information concerning relationships between Vicia sections than RAPD analysis. However, RAPD analysis was more informative concerning diversity of closely related Vicia taxa, such as the variable groups, section Narbonensis and V. sativa aggregate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008640322198
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  • 10
    Electronic Resource
    Electronic Resource
    Understanding cellular responses to toxic agents: a model for mechanism-choice in bacterial metal resistance (1995)
    Springer
    Journal of industrial microbiology and biotechnology 14 (1995), S. 132-141 
    Details
    ISSN: 1476-5535
    Keywords: Metal resistance ; Resistance mechanisms ; Metal toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Summary Bacterial resistances to metals are heterogeneous in both their genetic and biochemical bases. Metal resistance may be chromosomally-, plasmid- or transposonencoded, and one or more genes may be involved; at the biochemical level at least six different mechanisms are responsible for resistance. Various types of resistance mechanisms can occur singly or in combination and for a particular metal different mechanisms of resistance can occur in the same species. To understand better the diverse responses of bacteria to metal ion challenge we have constructed a qualitative model for the selection of metal resistance in bacteria. How a bacterium becomes resistant to a particular metal depends on the number and location of cellular components sensitive to the specific metal ion. Other important selective factors include the nature of the uptake systems for the metal, the role and interactions of the metal in the normal metabolism of the cell and the availability of plasmid (or transposon) encoded resistance mechanisms. The selection model presented is based on the interaction of these factors and allows predictions to be made about the evolution of metal resistance in bacterial populations. It also allows prediction of the genetic basis and of mechanisms of resistance which are in substantial agreement with those in well-documented populations. The interaction of, and selection for resistance to, toxic substances in addition to metals, such as antibiotics and toxic analogues, involve similar principles to those concerning metals. Potentially, models for selection of resistance to any substance can be derived using this approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01569895
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