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Assessment of biosafety and biorisk management practices among medical laboratory students in two institutions in Uganda

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Biosafety and Health 2022年第6期4卷 399-405页

作者： John Roberts Padde Winnie Akiteng William Edema Saad Mahjub Atiku Julius Tibyangye Job Tekakwo Cosmas Andruga derick hope Benson Musinguzi Jean Brenda Gesa Lawrence Amadile Robert Agondua Department of Medical Laboratory Sciences Muni UniversityAruaUganda Department of Medical Pathology Soroti UniversitySorotiUganda

Medical laboratory workers handle clinical specimens,which are a threat of exposure to infectious ***,medical laboratory science students report for internships with only theoretical knowledge of biosafety and biorisk management practices,predisposing them to a higher risk of laboratory *** this study,we assessed the influence of entry-level students'adherence to practices and attitudes towards biosafety and biorisk management during the *** online survey tool was used to explore the practices and attitudes towards laboratory biosafety and risk *** the 96 students,60(62.5%)anonymous responses were received,and of these,60.3%were direct entrants,and 32.8%were diploma ***(91.7%)of the students attended hospital internships,with 60.2%in Biosafety Level(BSL)-2 laboratories and 70.2%rotating in all the core areas of laboratory *** 8.3%who did not attend any internship were under the direct entry *** to biohazards was not significantly associated with laboratory safety level and student entry category(P>0.05).Recommended laboratory biosafety practices were not significantly associated with the safety level of the laboratory and student entry category(P>0.05).Poor attitudes towards certain laboratory biosafety practices were not significantly associated with the biosafety level of the training laboratory(P>0.05),whereas training(P=0.021)and clean-up procedures(P=0.048)were associated with laboratory safety levels,*** direct entrants had no access to BSL-3 laboratories,and this category of students had a negative attitude towards internship ***,there is a need to create a multi-channel full range laboratory biosafety and biorisk management teaching reforms based on practical application,real case studies,and laboratory simulation to be incorporated into the curriculum to benefit the direct entrant.

关键词： Laboratory biosafety and biorisk management Laboratory practices Medical laboratory students Biohazards Student entry category Internship

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Petrographic and Geochemical Characterization of Mayedo and Kinzoki Ranges (Sumbi Bauxite Region, Kongo Central/DR Congo)

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Journal of Geoscience and Environment Protection 2023年第7期11卷 98-117页

作者： derick Ungu Ramazani Ivon Ndala Tshiwisa Charles Mpiana Kenababo Albert Ongendangenda Tienge Valentin Kanda Nkula Esperit Mwanakangu hope Nathan Bamba Nkwansambu Don Luemba Vimbi Dominique Wetshondo Osomba Geo-Hydro-Energy Research Group Geosciences Department Faculty of Sciences and Technologies University of Kinshasa Kinshasa Democratic Republic of Congo Geosciences Department Faculty of Sciences and Technologies University of Kinshasa Kinshasa Democratic Republic of Congo Gestion des Ressources Minérales et Pétrolières Université de Kinshasa Kinshasa Democratic Republic of Congo Laboratoire de Géologie des Argiles Mention Géosciences Faculté des Sciences et Technologies Université de Kinshasa Kinshasa République Démocratique du Congo Centre de Recherches Géologiques et Minières (CRGM) Kinshasa Democratic Republic of Congo

The bauxitic region of Sumbi and its surroundings in Central Kongo (DR Congo) is located in an area corresponding to “bands” of basic rocks made up of microdolerites, basalts and andesites. The problem of this study is linked to the similarity of the phenomena that generated the depositional process of these ferruginous and aluminous formations. The aim of this article is to carry out a chemical and petrographic study of samples of bauxitic materials from the Mayedo and Kinzoki regions, with a view to their possible recovery. To this end, the chemical and petrographic analysis of the weathering formations outcropping in the study area was carried out using X-ray fluorescence and thin section methods. The latter revealed that two lithologies were detected in the healthy rocks: basalts with a mineralogical assemblage of plagioclase crystals, pyroxene microcrystals and oxide opaques;and dolerites represented by plagioclase crystals, pyroxenes and a few quartz crystals. X-ray fluorescence revealed high levels of Al2O3 (32.69%) in the Mayedo zone (MHb1). This visibly gibbsite-rich level corresponds to the zone of friable, homogeneous bauxite with a massive, blood-red texture, with an estimated gibbsite percentage of 55.50. The percentage of Fe2O3 is high in these zones at 42.77%, hence the dark red colour, reflecting a strong zone of ferruginasation. This horizon contains a high concentration of hematite and goethite minerals. Highly variable SiO2 contents ranging from 13.48% to 40.82%. These variations are essentially due to the dissolution of silica by leaching and resilification.

关键词： Bauxite Ferruginasation X-Ray Fluorescence Thin Film Mayedo Kinzoki Valorisation

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