GEOCHEMICAL SOIL MAPPING, PHYTOEXTRACTION OF CRITICAL ELEMENTS AND ENERGY PLANT PRODUCTION IN THE POST MINING AREA OF FREIBERG

The soil, heterogeneous in nature, is a very important part of the environment. It plays a major role in the existence, health and functioning of the organisms found in it, the other compartments of the biosphere and the life forms in them. Therefore, a negative deviation from a healthy soil will have a great impact on the biosphere and the environment at large. Some of these unhealthy deviations are caused by human activities and the aftermath of such activities such as mining and resource prospecting within the earth crust. Since these deviations are now very common and because economic gains from mining and prospecting of resources must continue, several research works are focused on highlighting the possible ways of carrying out sustainable mining and restoring the soil back to health conditions

GEOCHEMICAL SOIL MAPPING, PHYTOEXTRACTION OF CRITICAL ELEMENTS AND ENERGY PLANT PRODUCTION IN THE POST MINING AREA OF FREIBERG

The soil, heterogeneous in nature, is a very important part of the environment. It plays a major role in the existence, health and functioning of the organisms found in it, the other compartments of the biosphere and the life forms in them. Therefore, a negative deviation from a healthy soil will have a great impact on the biosphere and the environment at large. Some of these unhealthy deviations are caused by human activities and the aftermath of such activities such as mining and resource prospecting within the earth crust. Since these deviations are now very common and because economic gains from mining and prospecting of resources must continue, several research works are focused on highlighting the possible ways of carrying out sustainable mining and restoring the soil back to health conditions

Can the restrictive harvest period policy conserve mopane worms in Southern Africa? A bio-economic modelling approach

Imbrasia Belina also known as the mopane worm, like other edible insects and caterpillars, is a vital source of protein to Southern African countries. The worms live and graze on mopane trees, which occupy agricultural land. With increasing commercialization of the worm, the management of the worm, which was hitherto organized as a common property resource, has degraded to a near open access. In this paper, a simple bio-economic modeling approach has been taken to show that, for some optimal land allocation, the restrictive period harvest season policy that is advocated by community leaders may not lead to sustainable harvesting of the worm.

Free Your Mind: Contemporary Racial Attitudes and Post Racial Theory

The inauguration of the United States first Black President has prompted mass discussions of race relations in America. It is often articulated that America is now in a post-racial society. However, the question still remains: does the election of a Black president demonstrate that America is now a color-blind society? To answer this question, we rely on data collected by PEW (2007). Our results suggest that white and African Americans differ significantly in the extent to which they express post-racial attitudes. Specifically, we find that whites more commonly express post-racial attitudes, claiming that racism and discrimination are rare, in opposition to African American views. On the other hand, blacks are more likely to believe that discrimination still occurs. We further find that whites\u27 post-racial beliefs are significant determinants of their attitudes towards race-related policies, such as affirmative action. Keywords: Race, Obama, Post-racial, Public Opinion, Racial Attitudes, Racial Politics, African American

Genetic diversity assessment and evaluation of the concentration and stage of application of a male gametocide for hybrid development in sweet stem sorghum for bioethanol production.

Doctor of Philosophy in Plant Breeding. University of KwaZulu-Natal, Pietermaritzburg, 2018.Abstract available in PDF file

An examination of substance abuse prevention programmes and their impact on minors who are prone to substance abuse in South Africa.

Masters Degree. University of KwaZulu-Natal, Durban.No abstract availabl

Speech pathologists and audiologists in the training of community rehabilitation workers : ethical issues.

A research report presented to the Department of Speech Pathology and Audiology, Faculty of Arts, University of the Witwatersrand, Johannesburg, in partial fulfillment of the requirement for the degree Master of Arts in Speech- Language Pathology by CourseworkHealth care professionals are expected to apply ethical principles such as nonmaleficence, beneficence, autonomy and justice in their teaching of students and treatment of clients. Speech Pathologists and Audiologists (SPAs) in South Africa are responsible not only for educating members of their profession, but are often also involved in the training of Community Rehabilitation Workers (CRWs). Hence the aim of the present study was to explore the experiences, opinions and attitudes of a group of SPAs and CRW co-ordinators with particular reference to ethical issues related to CRW training. In order to investigate this aim. an interview schedule followed by a questionnaire were administered to SPA and CRW co-ordinators who had been involved in CRW training at The Wits/Tinstwalo CRW Training Programme in Gazankulu and at The Institute Of Urban Primary Health Care in Alexandra Township. Data elicited from the interview were analysed using content analysis and responses categorized according to respondents' background in ethics and knowledge regarding ethical principles. Results are discussed in terms of their implications for SPA and CRW co-ordinators.Andrew Chakane 201

Characterization of the University of Vermont Plasma Torch and Simulation of Pyrolysis Gas and Plasma Interactions

In previous studies done at the University of Vermont’s Inductively coupled Plasma (ICP) touch facility, the plasma conditions were always assumed to be in Local Thermodynamic Equilibrium(LTE) state. To improve the knowledge of the thermodynamic properties of the plasma conditions, in this study, experiments and analysis were conducted to determine whether or not the facility is indeed in LTE. LIF data was collected at 7mm off the exit of the quartz tube and compared with CEA simulations for the same plasma conditions. The facility was also better characterized by using LTE analyses of the absolute emission intensities to determine the temperatures and enthalpies of the plasmas at the 7mm location. This will improve baseline data for CFD modeling of the facility. Further work has been done to develop a quasi-steady injection probe to replicate the pyrolysis of PICA to enable better characterization of the evolution of the pyrolysis products as they react with plasma gases. This probe, which was designed, built and modified in previous works done at UVM, has been used to inject mixtures with different volumetric rations of Carbon Dioxide and Hydrogen gases into pure Argon and argon diluted Nitrogen and air plasmas. Spatially resolved, point-wise, line of sight emission measurements were taken in the boundary layer region and was used to characterize the spatial evolution of the different mixtures of carbon dioxide and hydrogen as they are injected into different plasma. These results were then compared to temporally resolved PICA emission data taken in a previous study. A better match was found for the comparison between the PICA data and the emission data from the injected mixtures