School of Physical Sciences (Phys-Sciences) Collections: Recent submissions
Now showing items 101-120 of 195
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Optimization of the electrical resistivity of magnetron sputtered Aluminium and Boron co-doped zinc oxide thin films for solar cells
(Makerere University, 2022)The aim of this research was to optimize the electrical resistivity of transparent Al-B co- doped ZnO thin films for application as a transparent front electrode in thin film solar cells, as a cheaper alternative to the ... -
The use of Splines for solving ill-posed problems, with application to the Cauchy problems for the Heat and Helmholtz equations.
(Makerere University, 2022-03-22)Inverse heat conduction: The Cauchy problem for the heat equation is a model of situation where one seeks to compute the temperature, or heat-flux, at the surface of a body by using interior measurements. The problem is ... -
Prediction of daily global solar radiation on a horizontal surface in Uganda using artificial neural networks.
(Makerere University, 2022-02-03)In this research a five parameter artificial neural network model was developed to predict daily global solar radiation on a horizontal surface using input variables that include; sunshine hours, maximum temperature, minimum ... -
Performance Analysis of Bukuzindu Hybrid Power Plant in Kalangala District of Uganda
(Makerere University, 2022-02-01)Uganda has many isolated communities that are not connected to the national grid and most of such communities are Islands. Most of these communities meet their electricity demand through stand-alone diesel generators and ... -
Mathematical Models for HIV-HCV Co-infection Dynamics under Various Control Strategies
(Makerere University, 2022-03)Both HIV and HCV have considerable contribution to the global morbidity and mortality. Since these two viruses have similar transmission routes, HIV-HCV co-infection is common. The existing HIV-HCV co-infection mathematical ... -
Reduced modules relative to functors
(Makerere University, 2022-03)Reduced rings form an important class of rings which properly contains domains. The notion of reduced rings was studied and later extended to modules. Reduced modules have been studied using an element-wise approach. We ... -
General large deviations of longest gaps in homogeneous Poisson processes
(Elsevier, 2020)Let (N(t))t≥0 be a homogeneous Poisson process with unit intensity. The longest gap L(t)of this process is the maximal time subinterval between epochs of arrival times up to time t, and it finds applications in the theory ... -
Limiting behaviours of the longest gaps between occurrence epochs in poisson processes
(Makerere University, 2022-02)This study concerns the limiting behaviours of the longest gap, between epochs in Poisson processes up to time t using large deviation theory. This theory is an area of probability theory which provides tools for studying ... -
Flattened partitions: pattern avoidance and behavior of permutation statistics
(Makerere University, 2021-11-10)The study of permutations, and specifically flattened partitions is an active area of current research. We provide a new combinatorial interpretation to the sequence A124324 in the On-line Encyclopedia of Integer Sequences ... -
Nitrosoamines and narcotic drugs in smokeless tobacco products sold on Kampala City markets
(Makerere University, 2018-08)The consumption of smokeless tobacco products in Uganda has increased due to unregulated sale and easy of accessibility by the youth. It is usually characteristic of consumers of smokeless Tobacco products to behave ... -
Evaluating the shielding properties of selected building materials used in Kampala, Uganda for gamma radiation
(Makerere University, 2021-04)Humans are continuously exposed to ionizing radiation. For high ionizing radiation levels, shielding is needed to mitigate unwanted exposure. In this study, Shielding properties of selected local building materials used ... -
Hierarchical models and spatio-temporal processes in data analysis
(Makerere University, 2021-12)Spatio-temporal processes evolve in space and time. As a consequence data from such processes, usually possess both temporal and spatial dependence which have to be reflected by fitted stochastic models. The existing ... -
Measurement and modeling of residual stress in porcelain tiles formulated from different quartz particle sizes in Uganda
(Makerere University, 2021-06)Quartz plays a significant role in physicomechanical properties of tiles, because it is the most abundant crystalline phase present in a fired product. The use of quartz particle size that exceeds 32 µm can be detrimental ... -
Modeling precipitable water vapour using Global Navigation Satellite System data over the East African region
(Makerere University, 2021-11)The Global Navigation Satellite System (GNSS) can be used to derive accurately the Zenith Tropospheric Delay (ZTD) and Precipitable Water Vapour (PWV) under all-weather conditions. The derived ZTD and PWV values play a ... -
Earthworms as alternative protein ingredient in poultry feed.
(Makerere University, 2018-03-01)In poultry feed accounts for 70% of the total cost of production hence there is a need to have a high-quality and yet low cost feed. The protein sources used in poultry feeds (Rastrineobola argentea & soy beans) are also ... -
Primary validation of Charm II tests for the detection of antimicrobial residues in a range of aquaculture fish
(Springer Nature, 2020)The study carried out a primary validation of Charm II tests for the detection of antimicrobial residues in aquaculture fish. The validation was performed according to European Commission Decision 2002/657/EC and the ... -
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 ...