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Urea concentrations were tracked in the Knysna estuary, South Africa, following a strong initial storm of the austral summer rainy season in 2000. These post-storm urea concentrations are compared against a 1-year survey of these concentrations and demonstrate the initial and longer-term impacts of urea loading on a near-pristine estuary. Fifteen stations along the main channel of the estuary were sampled four times each, 2–4 weeks before the storm, providing and average urea concentration...
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A sustainability assessment study was performed with three teaching departments at Rhodes University – Ichthyology and Fisheries Science, Anthropology, and Accounting. The assessment used a Unit-based Sustainability Assessment Tool (USAT) and was guided by systems thinking and the ontological framework provided by critical realism. Results of the study showed that the Department of Ichthyology and Fisheries Science had a higher integration of sustainability issues in its activities than the...
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This paper examines the effects of family structure and parenthood on the academic performance of Nigerian university students. The sample for the study consisted of 240 students drawn from the six randomly selected faculties in Ambrose Alli University, Ekpoma, Edo State. The adapted form of “Guidance and Counseling Achievement Grade Form” was used for data collection and the data collected were subjected to statistical analysis using the t-test statistical method. The three null hypotheses...
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In this article, the authors support problem-based learning (PBL) based on its high level of alignment in addition to providing learners in engineering with an additional opportunity in learning process competencies, as contained within the South African National Critical Cross-field and Developmental Outcomes (COs). Constructive alignment describes a process in which the learning outcomes (LOs) become the objective for designing a curriculum that enables LOs to be achieved through...
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Southern Africa is made up of some of the poorest countries in the world. In addition, the common perception that the population of Southern Africa has a low incidence of vascular disease has resulted in vascular surgical training being a low priority. The assumption that in the future vascular disease in Southern Africa will remain uncommon is being challenged, and strategies to address the resultant shortage of vascular surgeons, both in the medium and long term, are suggested.
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Using cross-sectional data and employing probit models, the paper investigates child school attendance and labour in Morocco. Results indicate that education is a luxury good which can be purchased more easily by the non-poor. Moreover, a child is more likely to be in school if he/she is residing in an urban area and is the son/daughter of the head of the household. However, the Body Mass Index (BMI) - used to account for the impact of proper nutrition status on attendance probability -...
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Macroinvertebrate assemblages from uncontaminated and contaminated sites in the Gamba Complex (Gabon) were compared, the latter sites having been subjected to ongoing oil spills since the 1970s. Vegetation communities surrounding the sites included savannah, shrub–scrub, palm forest, gallery forest and thick jungle. Aquatic macroinvertebrate diversity was high, but abundances at individual sites were low. No living aquatic macroinvertebrates were found at sites with severe oil deposits, but...
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Different people react differently to the same experience. A current trend in science instruction is to integrate technology into classroom in a variety of ways. A Computer Based Instruction (CBI) courseware was used to teach cell theory that has posed diffi culties for teachers and students as part of the classroom innovation. Students’ attitude towards the innovation and their attitude towards the biology classroom environment were collected through two 5-point bi-polar Likert-scale items...
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Objective To determine the prevalence and causes of disabling hearing loss in adults and children in Uganda. Study design Cross-sectional survey of ear disease and hearing impairment. Setting A random cluster sample design of the population from the Masindi district of Uganda following the World Health Organization (WHO) guidelines, using a modified version of the WHO Ear Disease Survey Protocol. Main outcome measure The prevalence of disabling hearing impairment using the WHO definitions...
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'Teaching About Other Countries - A Teaching Model for Primary and Middle School Teachers' is a resource material made available to Victorian teachers to explore the concepts of geography. The resource is divided into three sections covering different topics in each one of them.
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We report source mechanisms for the six largest shocks of the Mozambique earthquake sequence of 22 February 2006. The main shock of this sequence is one of the largest ( M w ∼ 7.0) to occur in Africa over the past 100 years and its P waveforms alone are sufficient to show that north‐south trending normal faulting near the surface continues to depths of more than 15 km along an exceptionally steep dip of 76° ± 4°. This new result shows that globally seismogenic normal faulting spans a wide...
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Die aanbreek van die 21e eeu het ook wêreldwye veranderinge in geskiedenisonderrig getoon. Dit was sigbaar in vele gewysigde of nuwe kurrikula binne veral die verdere onderwys- en opleidingsfase (hoërskole) asook binne die strukture van handboekontwikkeling vir skole. In Suid-Afrika het hierdie tendense saamgeval met ‘n tydperk van transformasie in die onderwys sedert veral die oorname van die African National Congress as regerende party vanaf 1994. In die algemeen was die verandering in...
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This study examines the way indigenous people in Jema’a Local Government Area of Kaduna State perceive climate change and their adaptation strategies to climate change. The paper also asks indigenous people of the impacts of climate change on their various activities and any perceive hindrance to its adaptation. A total of 225 questionnaires were administered in five settlements within the study area, although only 200 of these questionnaires were used for the purpose of analysis. Findings...