School of Physical Sciences (Phys-Sciences): Recent submissions
Now showing items 61-80 of 189
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Bio-oil production from water hyacinth by hydrothermal liquefaction process using iron oxide-based nanocomposites as catalysts
(Makerere University, 2023-01-09)The iron oxide nanocatalyst and iron oxide/nickel oxide nanocomposite were synthesized by the co-precipitation method and used in the hydrothermal liquefaction (HTL) of water hyacinth. The composition and structural ... -
Synthesis and characterization of silver/calcium Oxideactivated carbon Nano-composite for the removal of phosphate from wastewater
(Makerere University, 2022-12)Excessive phosphate concentration in wastewater discharged into the environment is the main cause of eutrophication in aquatic environments. Adsorption methods are widely used for removing phosphate from wastewater because ... -
On the Wavelet Analysis of Square Integrable Functions.
(Makerere University., 2022-12-12)In this study, we derive the conditions under which an arbitrary L^2(R) function can be expanded in terms of the wavelet basis. This is done by rst deriving the conditions under which an arbitrary scaling function and the ... -
An Automatic Electronic Photovoltaic Heating System for Charging Thermal Energy Storage Tank
(2023-01-03)Power generated by Photovoltaic modules can be directly used for heating. However, due to the intermittent nature of solar irradiance, such a PV heating system requires a controller which can automatically select the ... -
Geometric mean-reverting approach to modelling stock prices at the Uganda securities exchange:case of Stanbic bank Uganda
(Makerere University, 2022-12-21)An accurate stock price prediction brings advantages to investors and benefits the stakeholders directly since it provides enough information to make better investment decisions towards the future. This dissertation aims ... -
Effect of Heavy Metal Concentration on Natural Radioactivity Levels in Selected Wetlands in Kampala, Uganda.
(Makerere University, 2022-12-22)Top soil samples and accompanying yams were analyzed for natural radionuclide constituents and heavy metal concentrations using gamma - ray spectrometric methods and atomic absorption spectrometery (AAS), respectively. The ... -
Comparative analysis of Ethanol production from Sweet Sorghum and Maize stalks grown in different locations in Eastern Uganda.
(Makerere University, 2022-12-06)The study investigated the production of ethanol from the dilute acid Hydrolysate and their respective blends of 100%, 75%, 50%, 25% and 0% composition by sweet sorghum. The study also looked at the production of ethanol ... -
Diagnostic Reference Levels For Common Computed Tomography Examinations In Adult Patients, Kampala- Uganda
(Makerere University, 2022-12-12)The aim of this study was to estimate the computed tomography (CT) dose levels for common examinations in Kampala. Dose data and scan parameters for the most commonly performed procedures were surveyed during a five-month ... -
Design of a water purification technology for the removal of Iron, Manganese, and Escherichia coli from ground water supply of Oruchinga Refugee Settlement Communities
(Makerere University, 2022)The present study investigated the levels of iron, manganese, and E. coli in the boreholes and shallow wells waters of the Oruchinga valley refugee camp. A multi-stage filter technology was designed for the removal of total ... -
Performance of selected natural dyes in dye sensitized solar cells
(Makerere University, 2022)Organic dyes have the potential for use as sensitizers in dye sensitized solar cells (DSSC). To this end, the performance of anthocyanins in DSSC has been investigated. Anthocyanins were extracted from fresh flowers of ... -
Anti-bacterial activity and characterisation of compounds of leaf extracts of Erlangea tomentosa S. Moore
(Makerere University, 2022-12-05)Bacterial infections such as pneumonia, lower respiratory tract infections, gastrointestinal disorders and skin infections are health burden to mankind. In Uganda, several medicinal plants are locally used to treat various ... -
Sorption kinetics and equilibria of a mixture of atrazine and diuron for selected tropical soils from Uganda
(Makerere University, 2022-11-28)The purpose of this study was to measure and model the sorption behavior of a mixture of pesticides in selected tropical soils, using atrazine and diuron as probe compounds. This information is important since it can be a ... -
Recovery of gold from electronic waste and soils using alpha-cyclodextrin derived from selected non-edible plants
(Makerere University, 2022-08)Gold recovery has been a central issue in a wide range of studies as a consequence of its high demand. The existing processes of recovering gold from different matrices are cyanide leaching and mercury amalgamation. These ... -
Determination and analysis of radiofrequency intensities from digital television broadcasting transmitters in Kampala metropolitan, Uganda
(Makerere University, 2022-04-05)Digital Terrestrial Television (DTTV) broadcasting transmitters use radiofrequency electromagnetic waves to broadcast television signals to television viewers in an area of interest. The strength of a received television ... -
A mathematical model for dynamic stochastic asset liability management of Uganda's retirement benefit schemes
(Makerere University, 2022-11-03)models are well established decision tools for pension funds. They are commonly modelled as multi-stage, where a target terminal funding ratio is required, whereas at intermediate time periods, constraints on funding ratio ... -
Advances in carbon dioxide and propylene oxide copolymerization to form poly(propylene carbonate) over heterogeneous catalysts
(Elsevier, 2022)Chemical conversion of carbon dioxide (CO2) into value-added products is an attractive industrial process because it offers several economic and environmental advantages. This review presents advances and challenges in ... -
Sorption behaviour of Cypermethrin in selected Agricultural soils from Kakira, Lugazi and Kalangala farming areas in Uganda
(Makerere University, 2022-09-20)This study determined sorption kinetics and sorption equilibrium of cypermethrin on soil samples from sugar cane plantations in Kakira and Lugazi, and an oil palm tree growing area (Kalangala) in Uganda. Cypermethrin ... -
Loading and mobility of faecal and chemical contaminants to shallow groundwater: evidence from Lukaya Town, Central Uganda
(Makerere University, 2022-07)Shallow groundwater and on-site sanitation systems (OSS) feature centrally in most low income countries pursuing United Nations’ Sustainable Development Goal 6 (SDG 6) by 2030. This study assessed the shallow hydrogeological ... -
The Morphic property in modules and near-rings
(2022-08-22)We introduce and study weakly-morphic modules and their properties. In particular, we show that a finitely generated $\Bbb Z$-module is weakly-morphic if and only if it is finite. Hence a finitely generated Abelian ... -
Analysis of x-ray characteristics of narrow line Seyfert 1 Galaxies from nuclear spectroscopic telescope array data
(Makerere University, 2022)Narrow line Seyfert 1 (NLS1) galaxies are among the most variable active galactic nuclei (AGN) in the sky. Hard X-ray spectral and timing analysis of two of these galaxies, NGC 4051 and ARK 564, using NuSTAR data is ...