College of Natural Sciences (CoNAS): Recent submissions
Now showing items 181-200 of 334
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Synthesis and characterization of graphene oxide from locally mined graphite flakes and its supercapacitor applications
(Elsevier, 2020)Graphite is a mineral mined from different parts of the world which including Africa. It can be used or converted into different carbon materials such as exfoliated graphite, graphene, Graphene Oxide (GO), graphene nano ... -
Synthesis of cyclic carbonates from epoxides and carbon dioxide catalyzed by talc and other phyllosilicates
(Springer Nature, 2020)Naturally occurring phyllosilicate minerals such as talc and vermiculite in conjunction with n-tetra butyl ammonium bromide (TBAB) co-catalyst were found to be efficient in the coupling of CO2 with epoxides to form cyclic ... -
Organochlorine pesticide residues in Uganda’s honey as a bioindicator of environmental contamination and reproductive health implications to consumers
(Elsevier, 2021)Honey has multifaceted nutritional and medicinal values; however, its quality is hinged on the floral origin of the nectar. Taking advantage of the large areas that they cover; honeybees are often used as bioindicators of ... -
Selective oxidation of benzyl alcohols with molecular oxygen as the oxidant using Ag-Cu catalysts supported on polyoxometalates
(Elsevier, 2021)We report an efficient process for the oxidation of benzyl alcohols using molecular oxygen as the oxidant catalyzed by Ag-Cu catalysts supported on polyoxometalates (Ag-Cu/POM). The Ag-Cu/POM catalyst was prepared by ... -
Evaluation of diploid banana genotypes for resistance to weevils (Cosmopolites sordidus) in Uganda
(2021)Banana production in Uganda, has for decades been constrained by a number of abiotic and biotic factors. Weevils are among major pests that frustrate production causing over 60% yield loses. Cultural, biological and chemical ... -
X-ray emission properties of supernova remnants SN1987A and SN1006 from Chandra data
(Makerere University, 2021-12-07)In this study, we present X-ray emission properties of Type I and Type II supernova remnants from the Milky Way and Large Magellanic Cloud galaxies, respectively, using \textitChandra} data. Supernovae, the core-collapse ... -
Ethnopharmacology, cytotoxicity, antiviral and immunomodulatory profiles of medicinal plant species used by herbalists in treating people living with HIV/AIDS in Uganda
(Makerere University, 2021-11-07)Opportunistic infections (OI) are the single most important cause of mortality and morbidity among PLHIV in poor countries. There is widespread use of medicinal plants among PLHIV. However, there is no scientific information ... -
Glycerol carbonylation with CO2 to form glycerol carbonate: A review of recent developments and challenges
(Elsevier, 2021-10)The utilization of CO2 as a feedstock to produce valuable chemical products is an important area of research in the field of sustainable chemistry and climate change. It addresses the challenge of rising CO2 atmospheric ... -
Role of Plasmodium Falciparuminfection In Transplacental Transfer Of Antibodies.
(Makerere University, 2021-04-22)Even with several therapeutic interventions and a few vaccination strategies, Malaria still killed over 380,000 people in 2019alone,in Sub Saharan African Countries. One major cause is impaired transfer of antibodies from ... -
Estimation of Ground Motion Levels Due To Earthquakes of the Albertine Graben In Uganda.
(Makerere University, 2021-02-17)Present probabilistic seismic hazard maps for the Albertine Graben, for peak ground acceleration and the spectral ordinate at periods of 0.2seconds and 1.0seconds;with 10 % probability of being exceeded on average once in ... -
Forage diversity and preferences by honeybees Apis mellifera (hymenoptera: apidae) in Masaka district, Uganda
(Makerere University, 2021-01-25)The honey production potential for Uganda and in particular Masaka District has hardly been fully exploited and thus the honey production capacity has since remained low. Knowledge on suitable foraging options for honeybees ... -
Potential Hydrogeological Contaminants derived from petroleum activities in the Albertine Graben
(Makerere University, 2021-02)Current understanding of the hydrogeological characteristics of rift-margin environments is limited and not well reconciled to large- scale conceptual models of rift evolution. In Uganda with substantial dependence on ... -
Diversity and distribution of lepidopteran floral visitors in different land-use types in Mabira Central Forest Reserve, Uganda
(Makerere university, 2021)Globally, the population of insect pollinator species is in decline at local and landscape levels due to land-use intensification occurring in different land-use types. Insect pollinators in Uganda are not well researched ... -
Evaluation of modified collection drums and light emitting diode bulbs for trapping the edible long-horned grasshopper, ruspolia differens (serville) in Uganda
(Makerere University, 2021-04-09)The long-horned grasshopper (Ruspolia differens) is a delicacy in Uganda and many African countries. It is traditionally trapped at night during the swarming seasons using mercury bulbs that consume a lot of electric energy ... -
Potential Hydrogeological Contaminants derived from petroleum activities in the Albertine Graben
(Makerere University, 2021-02)Current understanding of the hydrogeological characteristics of rift-margin environments is limited and not well reconciled to large- scale conceptual models of rift evolution. In Uganda with substantial dependence on ... -
Microbial contaminants in wild harvested and traded edible long-horned grasshopper, Ruspolia differens (Orthoptera: Tettigoniidae) in Uganda
(Makerere University, 2021-04)Edible insects are now globally recognised as alternative sources of food and feed. Currently, over 470 spp of insects are consumed in Africa alone, with Ruspolia differens being the most common in central Uganda. Harvesting ... -
Synthesis, catalysis and Nitrosyl derivatives of Iron(ii) complexes bearing Pentadentate Polypyridyl ligands
(Makerere University, 2021-04-06)The work described in this thesis reports the synthesis, characterization, and solution chemistry of a series of new pentadentate polypyridyl ligands and their corresponding Fe(II) complexes. The ligand structure was based ... -
Development of a sensible heat packed bed energy storage system for medium temperature applications
(Makerere University, 2020-11-01)Utilization of solar energy can be a strategy to provide clean and cheap energy for various purposes such as cooking. Unfortunately, solar energy is intermittent and unreliable for continuous usage. As a result, it ... -
Distribution and incidence of the oil palm weevil Rhynchophorus Phoenicis (Fabricius, 1801) (Coleoptera: Curculionidae) in selected districts of Uganda
(Makerere University, 2020-10)The weevil Rhynchophorus (Herbst) (Coleoptera: Curculionidae) is a key pest of oil palm worldwide, but information on its infestation of crops in Uganda is eleven decades old, therefore, outdated. The current study was ... -
Farmers’ awareness of bean leaf beetles (Ootheca spp.) and the virulence of Aspergillus flavus and Metarhizium Anisopliae against these pests in Uganda
(Makerere University, 2021-02)The common bean (Phaseolus vulgaris L.) is a widely grown crop and plays a key role of food and income security in Uganda. However, production of the crop is constrained by field insect pests including bean leaf beetles ...