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  • Springer  (282)
  • Blackwell Publishing Ltd  (21)
  • Cambridge University Press  (11)
  • 1990-1994  (275)
  • 1975-1979  (39)
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  • 1
    Electronic Resource
    Electronic Resource
    Positive temperature coefficient of resistance effect in hot-pressed cristobalite-silicon carbide composites (1994)
    Springer
    Journal of materials science 29 (1994), S. 1097-1100 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Conductive silicon carbide particles were incorporated into an insulating cristobalite ceramic matrix to produce composite materials with a sizeable positive temperature coefficient (PTC) effect. A large drop in resistivity with silicon carbide content at room temperature, or percolation behaviour, was observed. The PTC effect of the composites, which resulted from the thermal expansion of the cristobalite ceramic matrix, was a maximum with five orders of magnitude for the specimen with 25 vol% silicon carbide. The PTC transition temperature of the composites was at 260 °C, which coincided exactly the reversible high-low phase inversion temperature of the cristobalite ceramic matrix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00351437
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  • 2
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    Positive temperature coefficient of resistance effect in hot-pressed cristobalite-silicon carbide composites (1994)
    Springer
    Details
    Publication Date: 1994-02-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    Directed Positioning of Micronuclei in Paramecium tetraurelia with Laser Tweezers: Absence of Detectible Damage After Manipulation (1993)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 40 (1993), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Possible covert damage from the use of the laser optical force trap (laser tweezers) to reposition micronuclei in Paramecium tetraurelia was assessed by measuring proliferation rates and postautogamous survival and mutation rates of cells after laser manipulations. No differences in subsequent daily proliferation rates among laser manipulated and various control classes of cells were seen. Similarly, the rates of postautogamous lethality and of “slow growth mutations” after repositioning of both micronuclei were not different from such rates in unmanipulated controls. In spite of extensive manipulations of micronuclei by the laser tweezers, there is no evidence of any damage induced by these manipulations. The laser tweezers therefore appears to be a tool of benign effect upon living cells, with tremendous potential use in many cell and developmental biological investigations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1993.tb04476.x
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  • 4
    Electronic Resource
    Electronic Resource
    Herbage intake and milk production by grazing dairy cows 2. The effects of level of winter feeding and daily herbage allowance (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 34 (1979), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Two experiments are described in which two levels of winter feeding and three levels of herbage allowance during the grazing season were imposed upon March/April calving British Friesian dairy cows. The winter treatments resulted in differences in live weight and milk yield at turnout of 35 and 53 kg and 3·4 and 3·2 kg d-1 for the two trials. Subsequently, when grazed at generous herbage allowances, the cows were able to compensate for much of this difference but when herbage was restricted the milk yield differences were accentuated.Groups of cows from each winter treatment were offered 25, 50 or 75 (Experiment 1) and 30, 50 or 70 (Experiment 2) g herbage DM per kg LW daily during the grazing season. Daily herbage intakes on the three allowances in each trial were 14·1, 13·3, 10·7 and 12·5, 12·1, 11·5 kg OM and milk yields were 16·0, 15·3, 12·5 and 15·2, 14·3, 11·8 kg SCM respectively. Both intake and milk production were depressed once the cows were forced to consume more than 50% of herbage on offer or to graze the sward down to a mean height of less than 8–10 cm. Grazing behaviour observations indicated that under rotational managements the cows did not compensate for restrictions in available herbage by grazing longer. Highest levels of milk production per unit area were observed in both trials when production per cow was depressed by 20–25%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1979.tb01477.x
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  • 5
    Electronic Resource
    Electronic Resource
    Kynurenic Acid: A Potential Pathogen in Brain Disorders (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 648 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb24532.x
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  • 6
    Electronic Resource
    Electronic Resource
    Distribution of Fibroblast Growth Factor Immunoreactivity in Skin during Wool Follicle Development (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 638 (1991), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1991.tb49078.x
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  • 7
    Electronic Resource
    Electronic Resource
    THE CULT[URE] OF THE CUSTOMER (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of management studies 29 (1992), S. 0 
    Details
    ISSN: 1467-6486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Much organizational restructuring, at least in the UK and USA, seeks to replace organizational regulation by that of the market. These developments centre around an emphasis on relations with customers - the ‘sovereign consumer’- as a paradigm for effective forms of organizational relations; they are apparent in, and underpin, a wide variety of organizational developments: just-in-time, total quality management, culture change programmes.Understanding these developments requires consideration of the discourse of enterprise of which the culture of the (internal) customer constitutes a key element. Defining internal organizational relations ‘as if’they were customer/supplier relations means replacing bureaucratic regulation and stability with the constant uncertainties of the market, and thus requiring enterprise from employees. This discourse has fundamental implications for management attempts to define working practices and relations and, ultimately, has impact on the conduct and identities of employees.Understanding these developments is not possible if analysis remains at the level of the organization. It requires that organizational restructurings, and the discourse which supports them, be located within the social and political rationality of enterprise. The certainties of management, the conviction that environmental challenge and competitive threat must be met by the cult[ure] of the customer, are due to managements’largely unquestioned acceptance of the normality and perceived good sense of the discourse of enterprise.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-6486.1992.tb00681.x
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  • 8
    Electronic Resource
    Electronic Resource
    On reducing ambiguity in the interpretation of transient electromagnetic sounding data (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical prospecting 42 (1994), S. 0 
    Details
    ISSN: 1365-2478
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Physics
    Notes: An attempt to resolve non-uniqueness in the interpretation of transient electromagnetic (TEM) sounding data using measured data alone is made. It is shown in the various examples studied that sufficiently early time measurements can be the determining factor in reducing the ambiguity caused by model equivalence. The early delay times thus play a dual role in transient soundings: they are responsible for resolving shallow structures and they may eliminate the ambiguity in the interpretation of geoelectric parameters of deeper targets. This is illustrated by the results of a follow-up TEM survey at the Dead Sea coast of Israel where the use of supplementary early time measurements allowed non-uniqueness in the determination of the depth to fresh/saline groundwater interface to be resolved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2478.1994.tb00192.x
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  • 9
    Electronic Resource
    Electronic Resource
    Malondialdehyde Oxidation by Hydrogen Peroxide and by Light-Excited Riboflavin in Model Systems (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 58 (1993), 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: Oxidation of malondialdchyde (MDA) by H2O2 was affected by concentrations of MDA or H2O2, pH and solvent. The reaction displayed an approximate 1:1 ratio of H2O2/MDA consumption and probably produced malonaldehyde as the oxidation product in moderate conditions. Oxidation of MDA by light-excited riboflavin produced superoxide anion, and the amount of superoxide anion generated was MDA concentration-dependent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1993.tb09392.x
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  • 10
    Electronic Resource
    Electronic Resource
    ISOLATION AND CHARACTERIZATION OF POLYPHENOLIC COMPOUNDS IN CRANBERRIES (1978)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 43 (1978), 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: Methanolic extracts of cranberries were evaporated and reextracted with ethyl acetate. Residues from the dried ethyl acetate extract were isolated by thin-layer, column, and paper chromatography. A large diffuse area indicated the presence of high molecular weight polymeric polyphenols. In addition, seven discrete spots were identified as: (a) catechin; (b) epicatechin; (c) a dimeric epicatechin with a C4-C8 linkage; (d) an unknown polymer which degraded on acid hydrolysis to three compounds, of which one was cyanidin; (e) an unknown polymer which degraded to at least four compounds of which one was cyanidin and one was the compound described above as (d). Compounds (f) and (g) were present in very small amounts. These compounds may contribute to the astringency of cranberries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1978.tb02502.x
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