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  • Springer  (315)
  • Cambridge University Press  (16)
  • 1990-1994  (262)
  • 1980-1984  (38)
  • 1975-1979  (31)
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Keywords
Publisher
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Year
  • 1
    Electronic Resource
    Electronic Resource
    The effect of differing dietary calcium and phosphorus contents on mineral metabolism and bone histomorphometry in young vitamin D-replete baboons (1984)
    Springer
    Calcified tissue international 36 (1984), S. 668-676 
    Details
    ISSN: 1432-0827
    Keywords: Diet ; Osteomalacia ; Calcium deficiency ; Phosphorus deficiency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Young baboons were fed semisynthetic, vitamin D-containing diets differing in calcium and/or phosphorus content over a 16 month study period. Diets low in calcium alone or low in both calcium and phosphorus led to the development of radiologic rickets and histologic features of osteomalacia at both 8 and 16 months. The diet which was low in calcium but which had a normal phosphorus content was associated with histologic features of hyperparathyroidism at 16 months; such features did not develop in animals fed the low calcium, low phosphorus diet. Biochemically the low calcium, normal phosphorus diet was associated with a transient fall in serum calcium around 8 months, and a more persistent elevation in serum phosphorus and alkaline phosphatase values during the latter half of the study. These biochemical changes were not seen in the baboons on the low calcium, low phosphorus diet. These results confirm that histological changes can occur as a result of dietary calcium deprivation in vitamin D-replete animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02405388
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    Paper (German National Licenses)
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  • 2
    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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  • 3
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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
  • 4
    Electronic Resource
    Electronic Resource
    Stress, Crisis, and Behaviour — a South African Case (1979)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 17 (1979), S. 117-140 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: It is March 1970 and a quiet warm Sunday afternoon in the town of Yungay. Most of the children are attending a performance by the visiting circus in the stadium, while their parents are relaxing in anticipation of the busy week ahead. The market is crowded with peasants who are selling and tourists who are buying. This picturesque town of 4,500 inhabitants is festive, and from many a house the radio can be heard broadcasting the World Cup soccer match from Mexico City.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00005206
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  • 5
    Electronic Resource
    Electronic Resource
    Protest Marches in South Africa (1990)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 28 (1990), S. 573-602 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: The year 1989 will in future generations be known as the annus mirabilis, not only as far as developments in Eastern Europe are concerned, but also within the context of South African politics. The September general elections for the tricameral Parliament marked a turning point in the direction of governmental policies. Nowhere has the changing mood been more clearly demonstrated than in the streets of the cities and towns. A countrywide spate of protest marches has occurred since the historic first government-approved peaceful anti-apartheid march in Cape Town on 13 September 1989, and these have become the most visible symptom of the advance to the so-called ‘new South Africa’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00054744
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  • 6
    Electronic Resource
    Electronic Resource
    Consciousness, Identification, and Resistance in South Africa (1983)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 21 (1983), S. 365-395 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: Colonial and neo-colonial situations are characterised by an absence of power-sharing, though those who have the political power may allow token participation by others. Tokenism exists in many aspects of life, though typically minority-group members enjoy greater economic and adminstrative rights than political and legislative rights. In the last analysis, the governmanet is not accountable to such minorities because they are not part of the electorate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X0002348X
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  • 7
    Electronic Resource
    Electronic Resource
    February, Vernon: The Afrikaners of South Africa : London and New York, Kegan Paul International, 1991 (1992)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 30 (1992), S. 534-536 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00010995
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  • 8
    Electronic Resource
    Electronic Resource
    Missionaries, Anthropologists, and the Policies of the Dutch Reformed Church (1984)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 22 (1984), S. 617-632 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: This article discusses the relationship of missionaries and anthropologists in South Africa. Due to such important factors as ethnicity, linguistic group membership, denominationalism, and party political affiliation, it is essential to present historical perspectives on these and related matters. The vocation of missionary is almost exclusively a white enterprise as is that of professional anthropologist. Blacks have however had significant influences in both realms and are today entering these vocations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00056263
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  • 9
    Electronic Resource
    Electronic Resource
    The Far Right in Current South African Politics (1991)
    Cambridge : Cambridge University Press
    The @journal of modern African studies 29 (1991), S. 627-667 
    Details
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: Afrikaner consciousness and identification have a tradition of very clear ethnic roots. Derived from a common ancestral stock that gives biological, historical, and linguistic characteristics to their identity, Afrikaners also share a Protestant religion tradition, with a major theme of Calvinistic predestination and being in South Africa due to divine providence. While opposing parties may vie for their support, the sentiment of favouring Afrikaners and whites – in that order – is shared by all.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0022278X00005693
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  • 10
    Electronic Resource
    Electronic Resource
    Complex behaviours of AB model describing idiotypic network (1994)
    Springer
    Bulletin of mathematical biology 56 (1994), S. 323-336 
    Details
    ISSN: 1522-9602
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract A simple chemical model of the idiotypic network of immune systems, namely the AB model, has been developed by De Boeret al. The complexity of the system, such as the steady states, periodic oscillations and chaotic motions, has been examined by the authors mentioned above. In the present paper, the periodic motions and chaotic behaviours exhibited by the system are intuitively described. To clarify in which parameter domains concerned the system exhibits periodic oscillations and in which parameter domains the system demonstrates chaotic behaviours the Lyapounov exponent is explored. To characterize the strangeness of the attractors, the fractal dimension problem is worked out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02460645
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