منابع مشابه
Potential Solar UVR Exposure Health Risks in South Africa
The detrimental effects of excess personal solar ultraviolet radiation (UVR) exposure include wrinkles, immunosuppression and skin cancer. Approximately 1 000 South Africans die each year from melanoma skin cancer and 30% of all histologically-diagnosed cancers are skin cancers, including the non-fatal non-melanoma skin cancers. Individuals with minimum natural protection from melanin, includin...
متن کاملsecuritization of mortality risks in life annuities
insurers have in the past few decades faced longevity risks - the risk that annuitants survive more than expected - and therefore need a new approach to manage this new risk. in this dissertation we survey methods that hedge longevity risks. these methods use securitization to manage risk, so using modern financial and insurance pricing models, especially wang transform and actuarial concepts, ...
15 صفحه اولOral health in South Africa.
This study describes the oral health status of the inhabitants of, and reflects on possible trends in oral diseases in South Africa. During the past 20 years, three national oral health surveys were conducted in South Africa, the most recent, a national Children's Oral Health Survey, was conducted between 1999 and 2002. The results of this study show that 39.7% of the 6-year-old children were c...
متن کاملModelling of Radiological Health Risks from Gold Mine Tailings in Wonderfonteinspruit Catchment Area, South Africa
Mining is one of the major causes of elevation of naturally-occurring radionuclide material (NORM) concentrations on the Earth's surface. The aim of this study was to evaluate the human risk associated with exposure to NORMs in soils from mine tailings around a gold mine. A broad-energy germanium detector was used to measure activity concentrations of these NORMs in 66 soil samples (56 from fiv...
متن کاملThe Effect of South African Geopolitical Position in the Development of Cinema in South Africa
This paper will discuss about the role of the geopolitical location of South Africa in the development of movie and the cinema industry in this country. Despite of bringing ci-nema to South Africa by white Europeans, but the development of this phenomenon is mostly due to the geopolitical position of this country. It is interesting to know that ci-nema reached Africa in much the same time as it...
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ژورنال
عنوان ژورنال: Journal of Travel Medicine
سال: 1999
ISSN: 1195-1982,1708-8305
DOI: 10.1111/j.1708-8305.1999.tb00858.x