Dissertation submitted to the Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science in Medicine Johannesburg, 2000 / During the academic year of 1997/98, two randomised groups of second year medical students at Universidade Eduardo Mondlane in Maputo learned gross anatomy of the limbs and the trunk by different teaching approaches. One group (A) dissected the thorax for 5 weeks according to an experimental programme, while the other (group B) worked on the same topic in the traditional way at UEM, which excluded dissection. The groups learned the abdomen by reversing the methods. For the study of the limbs, all the students learned the upper limbs by using the traditional approach while the lower limbs were dissected. Study guides were supplied to the Experimental Group and each of the practical classes started with a ten-minute preparatory tutorial when the structures to be studied were discussed. The same amount of time and the same background were given to both groups. At the end of the semester all students were examined by written and practical tests. The mean differences in the tests were statistically significant (p<0.001) only in the case of the practical test on the anatomy of the limbs, favouring the Experimental Group. Pre-questionnaires and post-questionnaires were completed before and after the experimentation. The combination of lectures, tutorials and dissection was the most preferred teaching approach. The students’ comments indicated that they felt that dissection enhanced the learning despite the short time devoted to it. On the other hand, students felt that dissection can enhance other skills which will be very useful later in pathology and surgery, for example in a way not possible to achieve by means of tutorials, or even prosections. Therefore, these results suggest that dissection could be a useful complementary teaching approach in addition to lectures and tutorials in Anatomy at UEM / IT2017

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<p>This study was carried out with the assumption that practical work does contribute to the teaching and learning of cell biology at Eduardo Mondlane University in Mozambique. In this regard, the main purpose of this study was to investigate the impact of practical work in the teaching and learning of cell biology concepts, specifically focussing on cell divisions concepts. It also aimed at determining the students' perceptions of the role of practical work in the learning of cell biology. On the other hand, the study sought also to understand the lecturers' practical work teaching experiences and views regarding the cell biology practical work.</p>

Texte remanié de: Th. doct.--Socio-économie du développement--Paris--EHESS, 1999. / En appendice, choix de documents. Bibliogr. p. 279-308.

Doct. diss.--Doctor of Philosophy--Uppsala, 1994.

An account is given of some aspects of the biology of Tilapia mossambica Peters in Lake Sibaya, South Africa. Previous work on Tilapia in Lake Sibaya is reviewed. Apart from brief gillnet surveys, which recorded the species' presence, no research on T. mossambica had been performed at Lake Sibaya before the two-year study of Minshull who collected data on food preferences, depth distribution of juveniles and breeding biology of adults. The main physiographical features of the lake are outlined. Lake Sibaya is a warm shallow coastal lake with extensive shallow terraces in the littoral which shelve abruptly into underwater valleys. The substrate is predominantly sandy. Aquatic macrophytes are generally restricted to water 1-7 m deep. Adult fishes (over 8 cm SL) are usually absent from water deeper than 12 m and shallower than 0.5 m, whereas juveniles may occur at all depths, and fry only in very shallow water. T. mossambica inhabits the littoral in the warm and transition periods (August to April) but moves into deep water in the cool season (May to July). Exposed and sheltered shallow areas are utilised for different purposes by adult fishes, the former for nesting, and the latter for feeding and mouth-brooding. Habitat selection by males was governed by nest site selection. Habitat Nests were most common in sheltered, sparsely vegetated littoral and sublittoral areas, but also present in well-vegetated sheltered areas. Breeding females preferred sheltered littoral areas but ventured onto the terrace to release the young. Juvenile and fry T. mossambica inhabited shallow exposed shores with a temperature gradient which reversed diurnally. The breeding, shoaling and feeding behaviour of T. mossambica is described, and integrated with data on T. mossambica from other systems. The breeding season spans seven months. Shoaling takes place in shallow water probably as a means of protection. T. mossambica is an omnivorous feeder relying largely on diatoms. The main predator is probably the barbel Clarias gariepinus, but avian predators may be more important. A method whereby the time of formation of rings on the scales of T. mossambica is described. The fishes were found to reach maturity after one year at a length of about 8 cm in females, and after two years at 10 cm in males. The breeding population had a standard length mode of 14 cm (females) and 17 cm (males). The maximum final size was about 24 cm SL. An estimate of the standing crop for fishes in the littoral and subiittoral areas of the eastern and southern shores of the south basin is given. The data were derived from a mark and recapture The biology of T. mossambica in Lake Sibaya as revealed by the present study is discussed with reference to data on the same and similar species in other systems. The utilis ation of the available resources in the lake by T. mossambica is commented upon, and reference is made to the significance of stunting, and the import ance of the retention of generalised characters for the successful habitation of the cyclically-renewed habitat of the littoral. Precocious breeding in T. mossambica is regarded as a functional adaptation which increases the proportion of fishes small enough to utilise the rich food resources in shallow water.

The study undertaken was an attempt to provide information on the effect that oceanographic features common in the Mozambique Channel have on primary production. Oligotrophic conditions dominated the Mozambique Channel at the time of sampling and the introduction of nutrients into the euphotic zone by upwelling processes were identified as cyclonic eddies. Differences in physico-chemical variables between surface and F-max across all sites proved to be stronger than the physico-chemical variables between 4 grouped oceanographic features. This was revealed by stronger variations in phytoplankton community structure and chlorophyll a concentration between surface and F-max compared to oceanographic features sampled. One of the hypotheses presented for the study was that diatoms would dominate phytoplankton communities within a cyclonic eddy. This was not the case as the coccolithophorid, Emiliania huxleyi Lohmann (Hay and Mohler 1967) dominated F-max and surface water in the cyclonic eddies and most other sites. Phytoplankton community structure did not differ significantly between the oceanographic features sampled which contradicted another one of hypotheses presented in the study. Chlorophyll a concentration in surface water of the cyclonic eddies was significantly higher than in surface waters within the anti-cyclonic eddy. F-max was not significantly different in phytoplankton biomass between these two system types. The cyclonic eddies and anti-cyclone had similar phytoplankton diversity which did not verify the hypothesis that there would be less phytoplankton species diversity within cyclonic eddies compared to the anti-cyclonic eddy. Phytoplankton community structure differed between F-max (depth at which maximum chlorophyll a is found) and the surface. This phytoplankton community difference was linked to differences in physico-chemical variables between the two depths. The diatoms Thalassionema nitzschioides, Pseudo-nitzschia sp.A, Pseudo-nitzschia sp.B, Thalassiosira sp.C, Thalassiosira sp.E, Bacteriastrum furcatum, Guinardia cylindrus, Nitzschia closterium, Hemiaulus hauckii, and Nitzschia braarudii revealed the only discernible ecological similarity amongst phytoplankton species across all sites and depths. This is important as it revealed that these species were regularly found occupying similar depths and potentially similar physico-chemical ranges in the water column which suggest these diatom species responded to a dominant source of variation. Distribution patterns of species and of ecologically defined groups support the hypothesis that diatom species and assemblages are good indicators of the changing character of an upwelling system. These statements lead to the assumption that the diatom grouping found in this study indicates areas of upwelling where water temperatures are reduced and nutrients are more readily available. One must keep in mind that ordination techniques are only descriptive and no significance is tested. The coccolithophorid D. anthos and the dinoflagellate Phalacroma spp. were noted as being most dissimilar to all other phytoplankton species with regards to their position in the water column and their response to physico-chemical variables. Finally, the dominance of E. huxleyi in the Mozambique Channel during November/December of 2009 reveals the potential vulnerability of phytoplankton in the channel to ocean acidification.

M.Ed. / This study, entitled "Stakeholders Perceptions about their Educational Contributions of GNP in Mozambique" focused on stakeholders of Nhambita buffer zone in the Province of Sofala. My interest in conducting such an investigation stemmed from the fact that when started this research I was working at the center for sustainable development of natural resources (CDS-RN) in Chimoio. — Manica Province and had Gorongosa National Park (GNP) as our pilot project. I realized that there were different stakeholders involved with the Park as well as the communities around it and not that much was done to improve their quality of life. Therefore, there was a need to conduct an inquiry which could lead to identifying the real reason underpinning the stakeholders not to do much and to afterwards draw some conclusions to modify the methodologies in order to change stakeholders' perceptions. In this regard, I conducted interviews and questionnaires in the community and with some stakeholders at Nhambita community, followed by data analysis of research data representing the stakeholders, community members, GNP and also to empower all participants. Hopefully, an educational programme would result from the consensus among all interested parties in the process with the objective of improving the citizen's life.

Philosophiae Doctor - PhD / This study was carried out with the assumption that practical work does contribute to the teaching and learning of cell biology at Eduardo Mondlane University in Mozambique. In this regard, the main purpose of this study was to investigate the impact of practical work in the teaching and learning of cell biology concepts, specifically focussing on cell divisions concepts. It also aimed at determining the students' perceptions of the role of practical work in the learning of cell biology. On the other hand, the study sought also to understand the lecturers' practical work teaching experiences and views regarding the cell biology practical work. / South Africa

Please read the abstract in the section 00front of this document / Dissertation (M Inst Agrar (Agricultural Economics))--University of Pretoria, 2006. / Agricultural Economics, Extension and Rural Development / unrestricted