The glacial deposits of eastern Durham

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On the age of Border Cave hominids

Main articleCited evidence suggests that Border Cave hominids 1-3 and 5 are associated with MSA phases 1-2 and date back to c. 90 000-110 000 yr B.P. These remains are fully modern in terms of morphology, and incipient Khoisan features are seemingly present in the case of BC1. This evidence is taken to mean that truly ancestral forms of our own species probably range back into the late Middle Pleistocene of sub-Saharan Africa. Such a scenario implies that previous phologenetic reconstructions have been based on only the final quarter or so of modern man's evolutionary history.The Anglo American Corporation and the Swaziland Iron Ore Development Compan

The Structural Integrity of Composite Materials and Long-Life Implementation of Composite Structures

Funder: University of CambridgeAbstract: Empirical or semi-empirical design methodologies at the macroscopic scale (structural level) can be supported and justified only by a fundamental understanding at the lower (microscopic) size scale through the physical model. Today structural integrity (SI) is thought as the optimisation of microstructure by controlling processing coupled with intelligent manufacturing of the material: to maximise mechanical performance and ensure reliability of the large scale structure; and to avoid calamity and misfortune. SI analysis provides quantitative input to the formulation of an appropriately balanced response to the problem. This article demonstrates that at the heart of the matter are those mechanisms of crack nucleation and growth that affect the structural integrity of the material: microscopic cracking events that are usually too small to observe and viewed only by microscopy

The Structural Integrity of Composite Materials and Long-Life Implementation of Composite Structures

Funder: University of CambridgeAbstractEmpirical or semi-empirical design methodologies at the macroscopic scale (structural level) can be supported and justified only by a fundamental understanding at the lower (microscopic) size scale through the physical model. Today structural integrity (SI) is thought as the optimisation of microstructure by controlling processing coupled with intelligent manufacturing of the material: to maximise mechanical performance and ensure reliability of the large scale structure; and to avoid calamity and misfortune. SI analysis provides quantitative input to the formulation of an appropriately balanced response to the problem. This article demonstrates that at the heart of the matter are those mechanisms of crack nucleation and growth that affect the structural integrity of the material: microscopic cracking events that are usually too small to observe and viewed only by microscopy.</jats:p

Border Cave

Bibliography: pages 173-194.Border Cave was investigated by R.A. Dart in 1934, by H.B.S. Cooke and others in 1941-2, and most recently by the author with the help of various volunteers (see Acknowledgements) over a total period of eleven weeks between late 1970 and mid 1975 (Cooke et al., l945; Beaumont and Boshier, 1972; Beaumont,1973). The original objectives were: (a) To isolate good C-14 samples in order to obtain evidence additional to published data being amassed at the time, which suggested that the Middle Stone Age technocomplex of sub-Saharan Africa was substantially older than the ~10-40 Kyr range then envisaged (Klein, 1970). (b) To see if a radiometric age could be deduced for the infant burial (Border Cave 3) found in 1941 (Archaeological Survey File B 20/1/2) and recorded there and by Cooke et al.(1945) as lying below "an ash horizon at the very base of the overlying zone of 'advanced', industry", which Malan (1949a) subsequently termed the 'Epi-Pietersburg'. (c) To determine if a closer study of the aggregates than that attempted by Cooke et al. (1945) would provide clues bearing on the nature and course of Middle Stone Age typological and metrical changes additional or supplementary to those previously outlined by Mason (1957, 1962, 1967) and Sampson (1972, 1974). (d) To provide a possible cultural, temporal and environmental framework for the mainly open and single-level Middle Stone Age sites in Swaziland and Natal, as excavated by the author at about 15 localities in 1965-8, and variously recorded by Brien (1932, 1935), Chubb (1932), Cramb (1950, 1961), Farnden (1968), Farnden and Gibbs (1962, 1963), Goodwin and van Riet Lowe (1929), Johnson (1908), and Malan (1945, 1948, 1949b, 1950)

De ziekte van Besnier-Boeck en tuberculose:over enkele huid- en serumreacties

In dit proefschrift werden literatuurgegevens van enkele huid en serum-reacties bij de ziekte van Besnier-Boeck en tuberculose besproken. De resultaten van het eigen onderzoek werden medegedeeld en met die uit de literatuur vergeleken. Achtereenvolgens kwamen tersprake de tuberculine-reactie, de tuberculine-neutralisatie-test, de BCG-vaccinatie, de lepromine-test, de Kveim-test en de haemagglutinatie-reactie volgens Middlebrook-Dubos. ... Zie: Samenvattin