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The Paleoproterozoic Duitschland Formation lies stratigraphically beneath the Timeball Hill Formation, which contains the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa.Lithologic evidence in Paleoproterozoic successions of North America, however, indicates the existence of three discrete and potentially global ice ages within this 300 my interval.Carbonates of the Duitschland Formation are significantly enriched in 13 C up to ؉10.1 permil in the upper part of...

The Paleoproterozoic Duitschland Formation lies stratigraphically beneath the Timeball Hill Formation, which contains the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa.Lithologic evidence in Paleoproterozoic successions of North America, however, indicates the existence of three discrete and potentially global ice ages within this 300 my interval.Carbonates of the Duitschland Formation are significantly enriched in 13 C up to ؉10.1 permil in the upper part of...

The Paleoproterozoic Duitschland Formation lies stratigraphically beneath the Timeball Hill Formation, which contains the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa.Lithologic evidence in Paleoproterozoic successions of North America, however, indicates the existence of three discrete and potentially global ice ages within this 300 my interval.Carbonates of the Duitschland Formation are significantly enriched in 13 C up to ؉10.1 permil in the upper part of...

The Paleoproterozoic Duitschland Formation lies stratigraphically beneath the Timeball Hill Formation, which contains the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa.Lithologic evidence in Paleoproterozoic successions of North America, however, indicates the existence of three discrete and potentially global ice ages within this 300 my interval.Carbonates of the Duitschland Formation are significantly enriched in 13 C up to ؉10.1 permil in the upper part of...

The Paleoproterozoic Duitschland Formation lies stratigraphically beneath the Timeball Hill Formation, which contains the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa.Lithologic evidence in Paleoproterozoic successions of North America, however, indicates the existence of three discrete and potentially global ice ages within this 300 my interval.Carbonates of the Duitschland Formation are significantly enriched in 13 C up to ؉10.1 permil in the upper part of...

The Paleoproterozoic Duitschland Formation lies stratigraphically beneath the Timeball Hill Formation, which contains the only unequivocal glacial unit of this era in the Transvaal Basin, South Africa.Lithologic evidence in Paleoproterozoic successions of North America, however, indicates the existence of three discrete and potentially global ice ages within this 300 my interval.Carbonates of the Duitschland Formation are significantly enriched in 13 C up to ؉10.1 permil in the upper part of...

The overrepresentation of African American students in special education programs is of national concern. Research has identified a higher special education placement rate of African American male students with Caucasian teachers. Yet the current U.S. teaching force includes only 4 percent African American teachers. To identify factors predictive of African American students enrolling in special education preservice teacher preparation programs, African American students were surveyed at 25...

Nationally representative surveys to gauge the public understanding of science and attitudes towards science and technology have been undertaken in many developed countries. In March 1999, a national survey, using items from international surveys as well as locally developed items, was commissioned by the Foundation for Research Development (FRD) and undertaken by the Human SciencesResearch Council (HSRC). The sample population comprised 2207 randomly selected adults distributed...

The recognition of prior learning is an important principle of current education policy in South Africa and a number of higher education institutions are introducing policies and procedures to implement it. Most of these provide for RPL for access rather than for credits or qualifications. The concern is with pre-entry testing and preparation but little attention is paid to the recognition of prior learning, in the full senses of these words, post-entry. Yet this is an important...

We have used two paralogous genes (Amyrel and Amy) of the amylase multigene family to reconstruct the phylogeny of the nine Drosophila melanogaster subgroup sister species, including D. santomea, the newly discovered endemic from São Tomé island. The evolutionary divergence of these genes is of special interest as it is suspected to result from physiological evolution via gene duplication. This paper describes the relationship between the geographical origin of the various strains and the...

This article offers strategies for improving one's technical assistance and training effectiveness in underdeveloped managerial setting. The author's suggestions are based on observations gained while providing technical assistance and training to government officials and civil servants in the Kingdom of Swaziland during 1998 and 1999. The examples provided relate to Swaziland. Nevertheless, they are applicable in many other similar settings. These survival strategies will be of great value...

Body size perception has been shown to be highly influenced by cultural factors including race. This study assessed body size perceptions of a convenience sample of college students (N=630). Included in a paper-and-pencil survey were current height and weight (body mass index (BMI)=wt [kg]/ht(2) [m]), perceived BMI, desired MI and perceptions of BMIs desired by others. Also assessed were perceptions of underweight, acceptable weight and overweight/obesity. African American females were found...

The Malawi Primary Community Schools Programme was conceived within the context of a new democracy, a changing policy environment and some of the worst social indicators in the world. It was developed through a consultative process on the tide of the introduction of free primary education. While the programme was part of a long-term social sector development programme which aimed to bring social and economic benefits to the population at large, the Community Schools Programme developed its...

Urinary schistosomiasis is endemic in the Niger river valley. The aim of the present study was to assess the efficacy and side effects of a single oral dose of praziquantel at 40 mg/kg in the treatment of schistosomiasis. The investigation took place between April 5, 1999 and May 25, 1999. A total of 318 primary school children, aged from 6 to 16 years, of a Schistosoma haematobium endemic area were included in the survey. They underwent a macroscopic and parasitological examinations of the...

The purpose of this prospective case study design was to describe the changes in dressing skills for five Kenyan children with cerebral palsy who participated in a 10-week occupational therapy intervention programme. The training sessions were individually designed to meet the needs of the child. The children's performances on undressing and dressing and the time these tasks took was used as a baseline and outcome measure. These measurements were documented by video films and then analysed...