Issue 1 (ISTJN. 10)

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Browsing Issue 1 (ISTJN. 10) by Subject "Cancer"

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    Assessment of background radiation fin playgrounds of selected basic schools in the GA east municipal district, Accra, Ghana
    (University of Namibia, 2017) Taapopi, Erastus E.; Faanu, A.; Dampare, S.B.
    A study has been carried out in the play grounds of selected basic schools in the Ga East municipal district of Accra, Ghana, to determine the exposure of school children to the radiation emitted by Naturally Occurring Radionuclide Materials and trace elements. The activity concentrations of different radionuclides were determined using high purity germanium (HPGe) detector. The average activity concentrations of 238U, 232Th and 40K were found to be19.8±8.7, 29.1±16.3 and119.4±97.9 Bq ·kg−1 respectively. The average annual effective dose calculated from these activity concentrations was 0.04mSv which is below the dose limit of1 mSv/year recommended by the International Commission on Radiological Protection (ICRP) for public exposure control. Radiological hazard assessments were carried out and the Rn−222 concentration and exhalation rate were estimated to be 32.13 kBg ·m−3 and 0.016 Bg ·m−2 · s−1 respectively. These values are with in the world average values..
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    Prevalence, trends and risk factors of breast cancer Mortality in Namibia: 2000-2015
    (University of Namibia, 2017) Pazvakawambwa, Lillian; Embula, S.P.
    The objectives of the study were to establish prevalence, trends and risk factors for breast cancer survival in Namibia. Secondary data was available from the Namibia Cancer Association Registry for breast, cervical and prostate cancer from the year 2000 to 2015. Patient survival was measured by age at death and the event variable was whether the patient was still alive or dead. Covariates included sex, ethnicity, and region. Descriptive summary statistics in form of tables, charts and graphs were used to profile the background characteristics of the patients. Kaplan-Meier curves were constructed and the Cox proportional hazards model was used to establish the determinants of survival among cancer patients. Results showed that breast cancer survival was influenced by age, region and ethnicity. Policy efforts should focus on the whites, basters and Herero speaking groups. Khomas region had the highest percentage of cancer cases and this calls for further research on the causes.