ERTS-1 imagery as an aid to the understanding of the regional setting of base metal deposits in the North West Cape Province, South Africa

A number of base metal finds have recently focussed attention on the North Western Cape Province of South Africa as an area of great potential mineral wealth. From the point of view of competitive mineral exploration it was essential that an insight into the regional geological controls of the base metal mineralization of the area be obtained as rapidly as possible. Conventional methods of producing a suitable regional geological map were considered to be too time-consuming and ERTS-1 imagery was consequently examined. This imagery has made a significant contribution in the compilation of a suitable map on which to base further mineral exploration programmes. The time involved in the compilation of maps of this nature was found to be only a fraction of the time necessary for the production of similar maps using other methods. ERTS imagery is therefore considered to be valuable in producing accurate regional maps in areas where little or no geological data are available, or in areas of poor access. Furthermore, these images have great potential for rapidly defining the regional extent of metallogenic provinces

Domestic energy transition in South Africa in the context of rapid urbanization

Bibliography: leaves 139-146.This dissertation deals with the energy transition process which is de-fined herein as the process whereby energy consumption patterns o-f fuels used by a population change over time. The focus is on the domestic sector only and specific attention is paid to the black population o-f South Africa which is urbanizing rapidly. The existing data on -fourteen Sub-Saharan African countries are analysed and indications that the energy transition process is occurring are found. The process is influenced by both the level o-f urbanization and economic development but the rates o-f growth of these indicators do not appear to be influential

Duchenne and Becker muscular dystrophy prevalence in South Africa and molecular findings in 128 persons affected

A genetic service for Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) was initiated in Cape Town in 1987. Of the 143 DMD patients diagnosed during the period 1987-1992, 66 had a familial pattern of inheritance and 77 were apparently sporadic. Twenty BMD patients were identified, of whom 12 had other affected relatives and 8 were sporadic. Overall minimum prevalence rates of 1/100 000 for DMD and 1/55 000 for BMD were calculated. A markedly low DMD prevalence in the indigenous black population (1/250000) contributed tothe overall low DMD prevalence in South Africa when compared with that in the UK (1/40 000).By means of molecular methods, the diagnosis in 42% of the affected DMD males was confirmed by detection of deletions in the dystrophin gene. Deletions were identified in 50% of Indian, white and mixed ancestry patients. In contrast, only 22% of blacks had identifiable deletions.DMD appears to be underrepresented in the black population; the low deletion frequency in this group suggests that unique mutations not detectable by methods used in this study may be more frequent in these patients than in the other populations. The increased DMD frequency in Indians corroborates findings reported from the UK

Sacroiliac tuberculosis masquerading as mechanical lower back pain in a collegiate basketball athlete: a case presentation

Background: Sacroiliac tuberculosis is a rare condition for which early diagnosis and effective management frequently proves challenging. This report describes a case that was initially overlooked due to its presentation and unreported constitutional symptoms.Aim: To alert clinicians about skeletal tuberculosis, an often neglected diagnostic differential, which requires a high index of clinical suspicion, especially for patients from endemic areas.Findings: This patient’s presentation (sports injury) and unreported constitutional symptoms resulted in a delay in the diagnosis and initial institution of treatment.Implications: This report illustrates the importance of specifically asking about constitutional symptoms, even in sports injury settings and being mindful of infectious diseases or other chronic medical conditions, which may masquerade as common sports injuries.Keywords: skeletal tuberculosis, sacroiliitis, hip pai

Antibacterial and antimycobacterial activities of South African Salvia species and isolated compounds from S. chamelaeagnea

Extracts of 16 South African Salvia species commonly used in traditional medicine to treat various microbial infections were investigated for in vitro antibacterial and antimycobacterial activities using the micro-dilution and respiratory BACTEC method, respectively. The micro-organisms tested include two Gram-positive (Staphylococcus aureus and Bacillus cereus); two Gram-negative (Escherichia coli and Klebsiella pneumoniae) bacterial strains and the common pathogen responsible for tuberculosis, Mycobacterium tuberculosis. Extracts of the majority of species exhibited moderate to good antibacterial activity with minimum inhibitory concentration (MIC) values ranging from 0.03 to 8.00 mg/ml. Promising activity was observed against M. tuberculosis (MIC ≤ 0.50 mg/ml) with S. radula, S. verbenaca and S. dolomitica displaying the most favourable activity (MIC: 0.10 mg/ml). The antibacterial bioassay-guided fractionation of S. chamelaeagnea resulted in the isolation of four compounds: carnosol, 7-O-methylepirosmanol, oleanolic acid and its isomer ursolic acid as the active principles against S. aureus. The in vitro antibacterial and antimycobacterial activities may support the use of Salvia species in traditional medicine to treat microbial infections

Sacroiliac tuberculosis masquerading as mechanical lower back pain in a collegiate basketball athlete: a case presentation

Background:Sacroiliac tuberculosis is a rare condition for which early diagnosis and effective management frequently proves challenging. This report describes a case that was initially overlooked due to its presentation and unreported constitutional symptoms. Aim:To alert clinicians about skeletal tuberculosis, an often neglected diagnostic differential, which requires a high index of clinical suspicion, especially for patients from endemic areas. Findings:This patient’s presentation (sports injury) and unreported constitutional symptoms resulted in a delay in the diagnosis and initial institution of treatment. Implications:This report illustrates the importance of specifically asking about constitutional symptoms, even in sports injury settings and being mindful of infectious diseases or other chronic medical conditions, which may masquerade as common sports injuries

A cross-cultural study of the representation of shape: Sensitivity to generalized cone dimensions

Many of the phenomena underlying shape recognition can be derived from an assumption that the representation of simple parts can be understood in terms of independent dimensions of generalized cones, e.g., whether the axis of a cylinder is straight or curved or whether the sides are parallel or nonparallel. What enables this sensitivity? One explanation is that the representations derive from our immersion in a manufactured world of simple objects, e.g., a cylinder and a funnel, where these dimensions can be readily discerned independent of other stimulus variations. An alternative explanation is that genetic coding and/or early experience with extended contours - a characteristic of all naturally varying visual worlds - would be sufficient to develop the appropriate representations. The Himba, a seminomadic people in a remote region of Northwestern Namibia with little exposure to regular, simple artifacts, were virtually identical to western observers in representing generalized-cone dimensions of simple shapes independently. Thus immersion in a world of simple, manufactured shapes is not required for the development of a representation that specifies these dimensions independently

Biblical Theology of Life in the Old Testament

Life is a primary theme in Scripture, expressed in the rich diversity of the various books, corpora and genres of Scripture. Much has been published on what Scripture teaches about life and death. To date, however, no comprehensive biblical theology in which the concept of life is traced throughout the different books and corpora of the Old and New Testament has been published. It is this lacuna that this book aims to fill, assuming that such an approach can provide a valuable contribution to the theological discourse on life and related concepts. The primary aim of this book is to give an indication of the different nuances of the concept of life in the various books and corpora of the Old and New Testament by providing the reader with a book-by-book overview of the concept of life in Scripture. The secondary aim is to give an indication of the overall use and function of the concept of life in the Old Testament, the New Testament, and Scripture as a whole. The latter is provided by using the findings of the book-by-book overview of the concept of life in Scripture to draw the lines together

Biblical Theology of Life in the Old Testament

Life is a primary theme in Scripture, expressed in the rich diversity of the various books, corpora and genres of Scripture. Much has been published on what Scripture teaches about life and death. To date, however, no comprehensive biblical theology in which the concept of life is traced throughout the different books and corpora of the Old and New Testament has been published. It is this lacuna that this book aims to fill, assuming that such an approach can provide a valuable contribution to the theological discourse on life and related concepts. The primary aim of this book is to give an indication of the different nuances of the concept of life in the various books and corpora of the Old and New Testament by providing the reader with a book-by-book overview of the concept of life in Scripture. The secondary aim is to give an indication of the overall use and function of the concept of life in the Old Testament, the New Testament, and Scripture as a whole. The latter is provided by using the findings of the book-by-book overview of the concept of life in Scripture to draw the lines together