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  • 1
    Electronic Resource
    Electronic Resource
    Production of the lymphokine, macrophage aggregating factor, is not inhibited by histamine (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 1230-1231 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Unlike the previously reported inhibitory effect of histamine on the production of the lymphokine, migration inhibitory factor, histamine did not inhibit the production of macrophage aggregating factor (MAgF). By contrast, both prostaglandin E2 and hydrocortisone inhibited MAgF production, in a dose-dependant manner.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959757
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  • 2
    Electronic Resource
    Electronic Resource
    Platinum-group-mineral inclusions in chromite from the bird river sill, Manitoba (1983)
    Springer
    Mineralium deposita 18 (1983), S. 245-255 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Platinum-group minerals (PGM) have been identified as inclusions in chromite from the Bird River Sill, Manitoba. The inclusions are small (〈20 microns) and are commonly euhedral. The PGM inclusions are (Ru, Os, Ir) S2, laurite, and (Os, Ir, Ru alloy), rutheniridosmine: Laurites contain up to 2.99 wt. % palladium. Arsenic content is negligible and no platinum or rhodium has been detected. One platinum-group element alloy contains 0.96 wt. % rhodium but neither platinum nor palladium has been detected. Laurite inclusions in chromite from the ultramafic zone record two compositional trends; first increasing and then decreasing Ru/(Ru+Os+Ir) up section. PGM inclusions and other solid inclusions occur as discrete phases in chromite and are part of the chromite precipitation event. Increasing oxygen fugacity by wall rock assimilation or new magma injection initiates chromite precipitation, locally increasing the sulphur content of the magma to convert PGE alloys to sulphides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206212
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  • 3
    Electronic Resource
    Electronic Resource
    Properties of reticulum cell sarcomas in SJL/J mice (1983)
    Springer
    Immunogenetics 18 (1983), S. 399-413 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract While T cells from SJL and from F1 hybrids of SJL that do not express I-E antigens give strong proliferative responses to RCS, T cells from F1 hybrids expressing surface I-E do not. The nature of the stimulating antigen on the RCS cell surface was examined using monoclonal antibodies. Complete inhibition of the T-cell proliferative response was obtained with antibodies to I-A antigens, whereas antibodies to I-E antigens did not inhibit at all. This inhibition was mediated via an effect of the antibodies on the stimulating cells. Biochemical characterization of immunoprecipitated 125I- and 's S-labeled RCS antigens was performed using two-dimensional gel electrophoresis. Using this technique, I-A antigens were readily detected. However, neither Ia.7-specific antibodies nor antibodies specific for Eα : E β complexes precipitated any E alpha or E beta chains. Comparison of I-A antigens from RCS and normal SJL spleen cells revealed minor mobility differences in the gels, possibly due to differences in glycosylation, the significance of which needs to be further evaluated. Examination of RNA extracted from RCS, using E alpha and A alpha cDNA probes showed that RCS cells do not transcribe the E alpha gene as has been shown previously for normal H-2 s cells. Furthermore, DNA from RCS cells showed a defect in the E alpha gene similar to that known to exist in normal H-2 s cells. Our findings exclude the presence of E alpha on RCS cells and suggest a major role for I-A, either alone or in conjunction with another as yet unidentified cell surface antigen, in the stimulation of T cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00372472
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  • 4
    Electronic Resource
    Electronic Resource
    A comparative study of the effects of aspirin and paracetamol (acetaminophen) on platelet aggregation and bleeding time (1984)
    Springer
    European journal of clinical pharmacology 26 (1984), S. 567-571 
    Details
    ISSN: 1432-1041
    Keywords: aspirin ; paracetamol ; plasma aspirin esterase activity ; bleeding time ; platelet aggregation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In a double blind, randomised trial, the effects of 1 g aspirin and 1 g paracetamol were compared on bleeding time and platelet aggregation in 40 volunteers (20 females). Also investigated was the relationship between plasma aspirin esterase activity and both bleeding time and platelet aggregation after aspirin. Following 1 g aspirin there was a significant increase in bleeding time at 24 h (p〈0.01). A significant reduction (P〈0.01) in platelet aggregation with collagen was observed at 1, 6 and 24 h after aspirin, but no significant reduction (P〉0.05) was observed with ADP. Paracetamol had no effect on bleeding time or platelet aggregation. Plasma aspirin esterase activity ranged from 0.26–0.6 µmol/ml/min. A significant negative correlation (R=−0.55, P〈0.001) was observed between percentage increase in bleeding time (24 h) and plasma aspirin esterase activity. Further significant correlations were observed between plasma aspirin esterase activity and change in platelet aggregation with collagen at 1 h (R=0.68, P〈0.001), 6 h (R=−0.73, P〈0.001) and 24 h (R=−0.67, P〈0.001). These results suggest that it might be possible to predict an individual's haemostatic response to aspirin from knowledge of their plasma aspirin esterase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00543486
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  • 5
    Electronic Resource
    Electronic Resource
    Membership of associations and free-riders (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Industrial relations journal 12 (1981), S. 0 
    Details
    ISSN: 1468-2338
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: In this article the author, using case study material, considers the motives which induce individuals either to join associations or to free-ride. In particular, he concludes that analysis and thinking on the free-rider problem needs to be pursued in a specific, well defined manner.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-2338.1981.tb00386.x
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  • 6
    Electronic Resource
    Electronic Resource
    The determination of absolute structure. I. Some experiences with the Rogers η refinement (1984)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 660-662 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The η refinement of Rogers [Acta Cryst. (1981), A37, 734-741] has been applied to a wide range of noncentrosymmetric structures containing medium to strong anomalous scatterers; it has been shown to be an effective and robust method. The use of the general term 'absolute structure' (to signify a structure successfully distinguished from its inverse by, for example, analysis of anomalous scattering effects) is recommended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767384001355
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  • 7
    Electronic Resource
    Electronic Resource
    The determination of absolute structure. II. Absolute configurations from the Cambridge Crystallographic Data Centre files for 1982 (1984)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 663-668 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A survey of 102 structures flagged with 'absolute configuration' in the Cambridge Crystallographic Data Centre files for 1982 reveals many unsatisfactory features in the original publications. These are associated with data collection (lack of Friedel opposites and of absorption corrections), misinterpretation of the term 'absolute configuration' (claimed for achiral molecules and space groups), methods used to determine absolute configuration (over-optimistic interpretation of discriminatory tests) and presentation of results (little experimental detail, no prominent statement that an absolute configuration was assigned, no clear description of the methods used). Some confusion arises because of unintentional flagging of absolute configurations determined by solely chemical means.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767384001367
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  • 8
    Electronic Resource
    Electronic Resource
    The Cause of Reduced Cooking Rate in Phaseolus vulgaris Following Adverse Storage Conditions (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: The interrelationship between reduced cell separation rate, reduced imbibition value and reduced pectin solubility was investigated with reference to reduced cooking rate in Phaseolus vulgaris also termed the hardbean phenomenon. It was found that reduced imbibition value and reduced pectin solubility can both cause a reduction in the rate of cell separation during cooking of beans and hence an increase in their cooking time and that these two factors act synergistically. Accompanying symptoms are solute leakage during soaking due to membrane breakdown, phytin catabolism and pectin demethylation, all of which are key factors in the development of hardbean.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb10804.x
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of Electrical Stimulation on the Tenderization of Mutton by Aging (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 48 (1983), 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: The effect of high voltage electrical stimulation (800V RMS, 10 ms pulse width, 14.3 Hz for 90 sec) on the tenderization due to aging of meat at 0— 1°C has been studied by obtaining Warner-Bratzler shear force deformation curves of cooked longissimus dorsi and semimembranosus muscles from young and old sheep. For muscles restrained from myofibrillar shortening stimulation did not result in any significant improvement in shear parameters nor was the aging process affected. For muscles able to shorten, stimulation produced a substantial reduction in shear force values to the level obtained for restrained muscle. Shear force measurements on samples pressure-heat treated, to minimize myofibrillar strength, indicated that major structural changes in connective tissue, due to electrical stimulation, were unlikely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1983.tb14920.x
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  • 10
    Electronic Resource
    Electronic Resource
    Correspondence (1981)
    Cambridge : Cambridge University Press
    The @classical review 31 (1981), S. 149-149 
    Details
    ISSN: 0009-840X
    Source: Cambridge Journals Digital Archives
    Topics: Classical Studies
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0009840X00237347
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