DSpace 9

This site is running DSpace 9. For more information, see the DSpace 9 Release Notes.

DSpace is the world leading open source repository platform that enables organisations to:

easily ingest documents, audio, video, datasets and their corresponding Dublin Core metadata
open up this content to local and global audiences, thanks to the OAI-PMH interface and Google Scholar optimizations
issue permanent urls and trustworthy identifiers, including optional integrations with handle.net and DataCite DOI

Join an international community of leading institutions using DSpace.

The test user accounts below have their password set to the name of this software in lowercase.

Demo Site Administrator = dspacedemo+admin@gmail.com
Demo Community Administrator = dspacedemo+commadmin@gmail.com
Demo Collection Administrator = dspacedemo+colladmin@gmail.com
Demo Submitter = dspacedemo+submit@gmail.com

Photo by @inspiredimages

Communities in DSpace

Select a community to browse its collections.

Now showing 1 - 5 of 13

Recent Submissions

Malaria and Climate Variability: Exploring Variations in Rainfall, Temperature and Mortality on Mt. Elgon, Kenya (2011 To 2021)
(2025) Fredrick W. Wanyama; Job Mulonga; Moses M. Ngeiywa; Judith Makwali; Calvince Anino; Makila Jacob; Mwongula Wanjala
Background: Malaria is a preventable and treatable disease that is transmitted to humans through the bites of infected mosquitoes. Understanding the trends in the factors that contribute to malaria transmission is essential for the timely development of effective prevention and control strategies. Objective: This study analyzed the trends relationships between rainfall, temperature, and confirmed cases of malaria in Mt. Elgon Sub-County over the past decade (2011-2021). Results: The results showed a negative correlation between rainfall and confirmed malaria cases, with a correlation coefficient of -0.36. An increase in rainfall was associated with a decrease in confirmed malaria cases. Additionally, there was a moderate to strong positive correlation between average temperature and confirmed malaria cases, with a correlation coefficient of 0.16. An increase in temperature was associated with an increase in confirmed malaria cases. Conclusion: These results highlight the importance of understanding the role of environmental factors in the transmission of malaria and the potential impact of climate change on the disease transmission. Reduction in mean rainfall and an increase in mean temperature predicts’ increased malaria and these can be used to mobilize resources to prevent and manage the disease. Further research is needed to better understand the complex relationships between these variables and to identify effective strategies for preventing and controlling malaria.
Aflatoxin Contamination in Cereals and Animal Feeds in Bomet County, Kenya: A Food Safety and Public Health Concern
(European Journal of Nutrition & Food Safety, 2025-02-22) Kemoi E.K; F.O. Onyangore; Bii. C.C
Aflatoxin is a type of mycotoxin originating from fungi that contaminates human food and animal feeds, causing serious health effects in humans and animals. The study aims to determine fungal infestation and mycotoxin contamination of human food and animal feeds for public health initiatives in Bomet County. A quarter of a kilogram of ninety-one samples was taken randomly from each household and agro vets shops sampled during the study in brown bags to Kenya Medical Research Institute (KEMRI) laboratory in a deep freezer before laboratory investigation by culturing on mycological media. Fungi classification was based on morphological features. Mycotoxin detection was done using the ELISA-based EnviroLogix QuickTox Kit and the positive samples, was subjected to High-performance Liquid Chromatography analysis for QC purposes. Fusarium spp., Aspergillus spp., Alternaria spp., Mucor spp., Rhizopus spp., Penicillium spp. and, Xeromyces spp. were isolated from cereals and animal feed. Of all the samples analyzed 34.1% were positive for aflatoxins and 17% of the samples analyzed were exceeding the acceptable levels. AFB1 and AFB2 were the most commonly identified, the largest proportion of Aflatoxins ranges from 0 µg/kg to 480 µg/kg. According to the European Union's acceptable limits, amounts of aflatoxin detected in some foods were unsafe and not fit for human consumption. The presence of aflatoxins in staple foods poses significant health risks, including hepatocarcinogenic effects, and has economic implications for food security. Pre-harvest and post-harvest practices can be applied to prevent or minimize aflatoxin levels in food, such as Crop protection, drying of cereals, sorting moldy or damaged Kernels, storing food in a dry place, use of fungicides and even use of gamma rays to radiate crops.
Numerical Investigation of Turbulent Fluid Flow Over a Porous Aerofoil Wing Design Within a Magnetic Field
(International Advanced Research Journal in Science, Engineering and Technology, 2025-10) Kirui G. K; Mukuna W. O; Oduor M. O
A mathematical model of turbulent fluid flow over a porous aerofoil wing design within a magnetic field is considered. The fluid flow was modelled using Navier stokes equations of conservation of momentum, energy and mass in cylindrical coordinates. The governing equations were then non-dimentionalized and gave rise to the non-dimensional parameters. Computational fluid dynamics (CFD) techniques was used to simulate the flow of air over a porous wing within a range of magnetic field strengths. Examinations of the effects of the magnetic field on key performance metrics such as lift, drag, and efficiency, as well as the overall flow structure of the wing was performed and found valuable insights into the use of porous aerofoil wings in the design of aircraft operating in high-magnetic field environments, such as those found in space or near the Earth's poles. Additionally, the outcomes of the research had wider implications for other domains investigating the impact of magnetic fields on fluid motion, such as in the design of magnetic resonance imaging systems or in the study of planetary motions. Aerofoil wings are an essential component of aircraft design, as they provide lift and enable flight. However, the flow of air over the wing is often turbulent, which can lead to decreased efficiency and performance. Porous aerofoil wings wasproposed as a means of reducing turbulence, and the effects of such wings on fluid flow within a magnetic field have been thoroughly investigated. In this research, numerical investigation of the effects of a magnetic field on turbulent fluid flow over a porous aerofoil wing design was done. It is evident from the results that the primary velocities increase when the magnetic parameter was reduced. It was also found that the lift force increases when the Grashof number and Prandtl number decreases.
Numerical Investigation of Turbulent Fluid Flow Over a Porous Aerofoil Wing Design Within a Magnetic Field
(UoK, 2025-10) Gideon Kimutai Kirui
Aerofoil wings are an essential component of aircraft design, as they provide lift and enable flight. However, the flow of air over the wing is often turbulent, which can lead to decreased efficiency and performance. Porous aerofoil wings was proposed as a means of reducing turbulence, and the effects of such wings on fluid flow within a magnetic field have been investigated. A mathematical model of turbulent fluid flow over a porous aerofoil wing design within a magnetic field M=0.1 to M=2 was considered. The fluid flow was modeled using Navier Stokes equations for the conservation of momentum, energy and mass in cylindrical coordinates. The governing equations were then non-dimensionalized by the non- dimensional flow parameters such as magnetic parameter(𝑀), Hall parameter(𝑚), Prandtl number(𝑃𝑟), and Grashof number (𝐺𝑟) on fluid velocity and temperature distribution and gave rise to the nondimensional parameters. Computational fluid dynamics (CFD) techniques were used to simulate the flow of air over a porous wing within a magnetic field strength. Examination of the effects of the magnetic field on key performance metrics such as lift, drag, and efficiency, as well as the overall flow structure of the wing was performed and found valuable insights into the use of porous aerofoil wings in the design of aircraft operating in high-magnetic field environments, such as those found in space or near the Earth's poles. Additionally, the outcomes of the research had wider implications for other domains investigating the impact of magnetic fields on fluid motion, such as in the design of magnetic resonance imaging systems or in the study of planetary motions. In this research, numerical investigation of the effects of a magnetic field on turbulent fluid flow over a porous aerofoil wing design was done. Variation of Prandtl number (from Pr = 0.7 to 3) significantly varied the temperature profile while it had no observable effect on the velocity profiles. It is evident from the results that the primary velocities increase when the magnetic parameter was reduced. It was also found that the lift force increase when the Grashof number and Prandtl number was decreased.
Nuclear Proliferation: A Cross-Cutting International Security Issue
(International Journal of Advanced Multidisciplinary Research and Studies, 2025-03-07) Michael Ang’anyo Onyango; Thomas Otieno Juma
This paper discusses nuclear proliferation as a cross-cutting international security issues in contemporary. The paper addresses four pertinent themes which include: The nature of nuclear weapons and their effects; the global diffusion of nuclear and ballistic missile technology; Theorizing nuclear proliferation and non-proliferation, and; Other weapons of mass destruction (WMD) and their impact on world politics. Whereas nuclear itself is very useful commercially, we argue that nuclear weapons represent mankind’s ultimate confrontation with the natural environment that sustains us. The purpose of these weapons is wholesale destruction on a massive scale, which affects most forms of life. It stands as a single human creation with such a great potential for harm. Such is the threat to life posed by nuclear weapons that the International Court of Justice, the world’s highest legal authority, in its 1996 landmark ruling on the general illegality of these weapons, stated: "The destructive power of nuclear weapons is hard to be contained. They have the potential to destroy all civilization and the entire ecosystem of the planet.” There are two overwhelming threats to life on earth as we know it. They are climate change and its security effects. The diffusion of nuclear weapons to additional countries might come about through indigenous development programs, through assistance from the present nuclear powers, or through a combination of both. This diffusion, sometimes called the "Nth country" problem, has been of great concern in discussions of disarmament and U.S. nuclear assistance programs. It has been widely held that the spread of nuclear capabilities is disadvantageous for U.S. security and that an effort to stop it should receive highest priority in disarmament policies. It is the purpose of this presentation to examine the validity of this proposition. To do so it will be necessary to estimate the political and military effects that might arise from a further diffusion of nuclear capabilities. Such an undertaking is necessarily fraught with great uncertainties. This paper also presents an analysis of the contemporary debate on the begging question, “is there a theory of nuclear proliferation?” The theoretical debate over how nuclear proliferation should be explained, and whether future nuclear proliferation can be predicted or not, has been given fresh impetus since the end of the Cold War. The debate has been particularly lively, as the new international environment has brought new challenges to conventional wisdom about the spread of nuclear weapons. However, although some very important contributions have been made, the dynamics of nuclear proliferation remain largely a mystery. This paper does not claim to have found the answers, but it does attempt to show the limitations of the existing debate, and in doing so, highlights areas which require further research. Finally the paper interrogates the questions; “With the rapid erosion of the prohibition on use by states of chemical weapons, and the rise of radical non-state groups seemingly willing to utilize whatever weapons of mass destruction they can obtain, what can the international community do to restrain their use? And what do advances in neuroscience portend for the development and use of new kinds of chemical control agents?”