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Mid-sagittal magnetic resonance images of 104 normal individuals were analyzed to assess whether or not the corpus callosum or parts thereof is sexually dimorphic in favor of females. Subjects were 56 males and 48 females, both groups being closely age matched. The outline of the corpus callosum was divided into seven subareas, using three different(More)
The prevalence and degree of taurodontism (enlargement of the pulp cavity) in the mandibular permanent molars of two recent population samples from southern Africa were investigated quantitatively from lateral radiographs. The degree of occlusal wear was scored and two measures of relative pulp cavity size were recorded for each tooth. There was a(More)
A descriptive study was performed on 28 female (mean donor age, 64+/-21 years) and 26 male cadavers (mean donor age, 68+/-21 years) of mixed racial origin randomly sampled from 2 departments of anatomy. The objectives of the study were to determine the prevalence among the study population of the presence of flexor digitorum profundus and flexor digitorum(More)
Modern humans exhibit increasing relative enamel thickness from M1 to M3. Some biomechanical (basic lever) models predict that the more distal molars in humans encounter higher occlusal forces, and it has been postulated that this provides a functional explanation for the observed gradient in relative enamel thickness. However, constrained three-dimensional(More)
Optical techniques are often used for the development of new monitoring systems for wastewater quality. The different techniques, light scattering, UV-IR spectrophotometry, fluorimetry and image analysis have given rise to recent instruments but are often limited for industrial applications. After the presentation of the principles, the advantages and(More)
This study aims to quantify the physical demands of a sample of late 18th century skeletons from an unmarked burial site on Cobern Street, Cape Town, South Africa. Historical studies suggest that these individuals were either slaves or "free black" people of low socioeconomic standing. Cortical cross-sectional areas of paired humeri and tibiae from the(More)
Has information technology failed to Fulfill its promise of significant productivity improvements for industry and for the economy as a whole? If so, what has prevented it and what are the implications for CSCW design and deployment? These questions were addressed by a standing-room-only panel discussion of "The Productivity Paradox" at CSCW'92. The dis-(More)