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  • Articles  (39)
  • Springer  (39)
  • 2015-2019  (27)
  • 1975-1979  (12)
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  • Articles  (39)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 124 (1978), S. 259-265 
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Continuous exposure of young rats to the almond-like odor of acetophenone or cyclohexanone for up to 4 months, resulted in distinct but similar patterns of degenerating mitral cells in their olfactory bulbs. Rats favored their exposure odor in olfactory preference tests (Fig. 2) and their acuity for it was not altered (Fig. 3). However, they appeared to exhibit a deficit in detecting a similar but novel odor. The results suggest that the remaining normal mitral cells in the bulbs of these animals are those stimulated by the exposure odor. Cells which show signs of degeneration (Fig. 4) may receive little or no input from the periphery. Controls exposed to a similar but non-odorous environment showed evidence of non-selective mitral cell degeneration. In addition they had a lower acuity for acetophenone and cyclohexanone than animals reared in a normal rat colony (Fig. 3). Anatomical and behavioral data from odor exposed and control groups, suggest that partial regeneration of altered mitral cells may have occurred during a 5 month period following exposure. Overall the results provide further evidence for a topographical projection of the olfactory receptor epithelium onto the olfactory bulb and spatial coding of different odors in the bulb.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 40 (1975), S. 189-197 
    ISSN: 1432-2234
    Keywords: Energy surfaces in the complex plane ; HF+ ; Semiclassical collision theory ; Spinorbit interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract We calculate the energies of the 2∑+ and 2Π states of the HF+ system by the ab initio restricted Hartree-Fock method at a number of real and complex values of the internuclear separation. The energies of the associated spin-orbit states are calculated via a semiempirical scheme. The complex intersection point of these energy curves, an integral component of a semiclassical theory of electronic transitions, is determined by the ab initio calculations. The intersection point is also determined, for comparative purposes, by other methods of analytic continuation, i.e., Gaussian and rational-fraction fits to the real-valued energy calculations. Semiclassical dynamical calculations of the cross section for the process F(2 P 3/2)+H+ → F(2 P 1/2)+H+ using the various intersection points yield differences up to 20%.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Mineralium deposita 11 (1976), S. 33-45 
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Messina Copper Mines comprise a group of breccia pipes, disseminated replacement and fissure deposits within an area 20 km long by 1 km wide, emplaced within high-grade metamorphic rocks of the Limpopo mobile belt. Breccia pipes as well as associated hydrothermal copper deposits are aligned along a northeast trend which forms a southwestern projection of the Nuanetsi Igneous Province. The "L" and West lode breccia columns are known over a vertical extent of 1 250 metres, and are not exposed on surface; they are circular to polygonal in plan outline, as a result of joint controls. Peripheral microbreccia grades downwards and inwards to macrobreccia. Downward displacement of country rock marker zones indicate a maximum 1 – 3 per cent volume increase, while observed interfragmental fill constitutes 15 – 25 per cent. Hydrothermal alteration of wallrock gneiss mantles the breccia columns and does not extend to surface; it is comprised of distinct zones, the outermost characterized by sericitized gneiss, grading to an albitite, and finally to zoisite-quartz rock around the immediate brecciated contacts, and within the pipes. The interfragmental fill consists largely of quartz and sulphides, and grades downwards to albite + sulphides in the West Lode pipe. Sulphide mineral distribution is zoned, pyrite dominating in the apex of the pipes, grading downwards to chalcopyrite-bornite and then bornite-chalcocite at deeper levels. The nature of the fragmentation precludes normal stoping collapse mechanisms for brecciation and suggests a single implosive event. Chemical reaction induced shrinkage of fragments probably created the bulk of the interfragmental volume.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Molecular and cellular biochemistry 20 (1978), S. 119-124 
    ISSN: 1573-4919
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Summary Preparations of avian erythrocyte plasma membranes have been made which are in the form of sealed vesicles. Using these preparations the permeability of the membranes to Na+ K+, Mg+ and Ca+ was measured. Monobutyryl cyclic AMP and cyclic AMP increased the permeability to Na+ and Ca+ under conditions where no protein phosphorylation could occur. The only effect of phosphorylation of membrane proteins was to reduce Ca+ permeability. It is thus concluded that cyclic AMP increases Na+ permeability in the avian erythrocyte by a direct effect which does not involve protein phosphorylation.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Theory and decision 8 (1977), S. 127-157 
    ISSN: 1573-7187
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Notes: Abstract Coalitions are frequently more visible than payoffs. The theory of n-person games seeks primarily to identify stable allocations of valued resources; consequently, it gives inadequate attention to predicting which coalitions form. This paper explores a way of correcting this deficiency of game-theoretic reasoning by extending the theory of two-person cooperative games to predict both coalitions and payoffs in a three-person ‘game of status’ in which each player seeks to maximize the rank of his total score. Martin Shubik, ‘Games of Status’, Behavioral Science 17 (1971), 117–129. To accomplish this, we analyze the negotiations within each potential two-person coalition from the perspective of Nash's procedure for arbitrating two-person bargaining games, R. Duncan Luce and Howard Raiffa, Games and Decisions, John Wiley and Sons, New York, 1958, pp. 121–143. then assume that players expect to achieve the arbitrated outcome selected by this procedure and use these expectations to predict achieved ranks and to identify players' preferences between alternative coalition partners in order to predict the probability that each coalition forms. This work is supported by Research Grant SOC72-05245, awarded to the second author by the National Science Foundation. An earlier version of this paper was presented at the annual meetings of the American Political Science Association, Chicago, Ill., August 29 – September 2, 1974. We thank Peter C. Ordeshook for suggesting that Nash's arbitration model might be applied to this game, and David Deutsch for assisting us in this research. We test these payoff and coalition predictions with data from three laboratory studies, and compare the results with those attained in the same data by von Neumann and Morgenstern's solution of two-person cooperative games, Luce and Raiffa, op.cit., pp. 115–119. Aumann and Maschler's bargaining set solution for cooperative n-person games, R. J. Aumann and Michael Maschler, ‘The Bargaining Set for Cooperative Games’, in M. Dresher, L. S. Shapley, and A. W. Tucker (eds.), Advances in Game Theory, Annals Math. Studies, No. 52, Princeton University Press, Princeton, New Jersey, 1964, pp. 443–476. and an alternative model of coalition behavior in three-person sequential games of status. For an extension and application of the bargaining set to three-person games of status and a comparison of the bargaining set with our alternative model of coalition behavior in the three laboratory studies reported in this paper, see Richard J. Morrison's Ph.D. thesis, ‘Rational Choice Models of Coalition Formation in the Triad’, Graduate School of Industrial Administration, Carnegie-Mellon University, Pittsburgh, Pennsylvania, 1974 (this dissertation is available from University Microfilms, Ann Arbor, Michigan); and the paper by Laing and Morrison, ‘Sequential Games of Status’, Behavioral Science 19 (1974), 177–197. The coalition model is developed more extensively by Laning and Morrison in “Coalitions and Payoffs in Three-Person Sequential Games: Initial Tests of Two Formal Models”, Journal of Mathematical Sociology 3 (1973), 3–26 (hereinafter cited as ‘Initial Tests of Two Formal Models’).
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Synthese 〈Dordrecht〉 38 (1978), S. 373-387 
    ISSN: 1573-0964
    Source: Springer Online Journal Archives 1860-2000
    Topics: Natural Sciences in General , Philosophy
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Euphytica 26 (1977), S. 129-139 
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; grain yield ; tall plant ; semidwarf plant ; adaptation ; dryland ; regression analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary With a view to determining the comparative adaptation of semidwarf wheats to rainfed conditions, adaptation analyses were carried out on grain yield data of the 6th and 7th International Spring Wheat Yield Nurseries of the International Maize and Wheat Improvement Centre. Sites were chosen which had not received irrigation: across a combined total of 44 such sites, yield variation was closely related to growing seasonal rainfall. Using these sites, yields of thirty-three common cultivars. Norin 10-derived semidwarf cultivars plus tall ones, were regressed against site mean yield to give a regression slope (b) and deviations from the regression (sd 2) for each cultivar. Semidwarf cultivars generally showed higher mean yields and larger regression slopes (b 〉 0.9) than tall cultivars from lower latitudes. Tall cultivars from higher latitudes showed the lowest mean yields and the lowest b values (〈 0.7). No consistent trends in sd 2 were evident. Despite the greater regression slopes of semidwarf wheats, the best yields under all but the lowest yielding (driest) conditions were given by certain semidwarf cultivars; these had high mean yields and b values close to 1.0 (for example Tobari 66, Inia 66, Pato ArGentino and Sonalika). In contrast other semiwdarfs (notably Chenab 70) of similar mean yield, plant height and phenology, were not well adapted to the drier conditions as indicated by b values close to 1.3. The usefulness of the regression technique and the implications of these results for selection of semidwarf wheats adapted to drier conditions are discussed.
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  • 9
    Publication Date: 2016-08-18
    Print ISSN: 0944-1344
    Electronic ISSN: 1614-7499
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 10
    Publication Date: 2015-11-13
    Print ISSN: 0944-1344
    Electronic ISSN: 1614-7499
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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