Maina, Robert Macharia; Lang’at, Kibet; Kihato, P. K.(JKUAT-COETEC, 2025-01-14)
Digital beamforming is of paramount significance in addressing wireless communication systems’ capacity enhancement. Among well established digital beamforming mechanisms are Minimum Variance Distortionless Response (MVDR) ...
For centuries, edible mushrooms have been cultivated, eaten and appreciated for their taste, medicinal value, economic and ecological benefits. In the recent past, production of mushrooms has been steadily increasing and ...
Nyambane, E. N; Mwaura, C; Kamau, L.(JKUAT-COETEC, 2025-01-14)
There is need for technology intervention in pollution and flood mitigation. This is because people litter everywhere which not only leads to accumulation of waste products that block the drainage systems but also pollution. ...
Waste tyres are very difficult to dispose and there is a growing interest to produce fuel from waste tyres. However, the high sulphur content in the oil obtained from the pyrolysis of waste tyres is a potential obstacle ...
Makaa, Benard M.; Irungu, George K.; Murage, David K.(JKUAT-COETEC, 2025-01-14)
This paper reports on a comparative study of statistical Breakdown Voltage (BDV) in Persea americana oil (PAO) and mineral insulation oil (MIO) and their respective
mixtures. Two types of PAO are tested, that is extra ...
Karue, C. N.; Murage, D. K; Muriithi, M. C.(JKUAT-COETEC, 2025-01-14)
As the energy demand grows, combined with the quest to achieve Sustainable Energy for All (SE4ALL) objective of doubling the share of renewable energy (RE) in the global energy mix by 2030, there is a significant increase ...
Yegon, G. K.; Waswa, D. W.; Isoe, G. M.; Rotich, S. K.; Gibbon, T. B.; Leitch, A. W. R.(JKUAT-COETEC, 2025-01-13)
We experimentally characterized and optimized the performance of a vertical cavity surface emitting laser (VCSEL) in a communication link. VCSEL at 1550 nm transmission windows was chosen for data rate of 10 G bps for metro ...
Regis, N.; Muriithi, M. C.; Ngoo, L. M(JKUAT-COETEC, 2025-01-13)
Grid connected PV systems are proving to be worth considering in the adoption of renewable energy technologies. Among other renewable energies, grid connected PV systems continue to attract investors and electricity customers ...
Kenya is on the path of developing domestic renewable energy resources to reduce the overdependence on imported petroleum products and reduce carbon emissions. Presently, Kenya has increased the renewable energy penetration ...
Mwaura, Margaret M.; Thoruwa, Thomas F. N.(JKUAT-COPAS, 2025-01-13)
The use of solar energy for cooking offers an alternative source of energy to the high cost of petroleum products and the diminishing wood fuel products for cooking and heating applications. Kenya is located on the equator ...
Ombongi, Filbert Onkundi; Ouma, Absaloms Heywood; Kibet, Philip Langat(JKUAT-COETEC, 2025-01-13)
The mobile broadband access is expanding rapidly in the recent times due to advancement in technical specifications of the Fourth Generation (4G) mobile cellular system. The resulting higher traffic demand which continues ...
With the ever-growing energy demand and coupled with the issues of reliability. Microgrids powered by distributed conventional and renewable energy sources can be utilized to address this problem. Hybrid energy sources ...
Mawanga, Lucius C.; Kihato, Peter K.; Saulo, Michael J.(JKUAT-COETEC, 2025-01-13)
Optimal placement and sizing of distributed generation is one of the most studied areas in the current distribution network planning and operation. It is well known that the power
network has always had a passive distribution ...
The increasing population and hence increase in the demand for electric power calls for ways for increasing power generation most especially from the Renewable Energy
Sources (RES) like wind and solar PV. That is why the ...
Langat, Beatrice C.; Kamau, Prof Stanley I.; Hinga, Prof. Peterson K.(JKUAT-COETEC, 2025-01-06)
Water treatment processes incur relatively long transport delays, simply because the process variable is controlled by the addition of chemicals where a reaction time is allowed before the process variable can be sampled. ...
Ngoret, J. K.; Kommula, V. P.(JKUAT-COETEC, 2025-01-06)
This paper presents microstructural and metallurgical characterization of prematurely retired from service high pressure (HP), PT6A-114A engine CT blades at 6378 creep-fatigue hours against a preset 10000 creep-fatigue ...
Many manufacturing companies are now using Lean Manufacturing (LM) as a corporate strategy to increase their global competitiveness. Lean tools such as Kaizen, 5S, Total Productive Maintenance, Kanban, Total Quality ...
Mureu, E.W.; Kihato, P. K.; Langat, P.K.(JKUAT-COETEC, 2024-12-20)
With the ever increasing popularity of wireless applications, more innovative ways of enhancing spectral efficiency are needed in-order to avail more bandwidth. One such way, is to allow for secondary use of channels ...
Kirui, Kemei P.; Murage, David K.; Kihato, Peter K(JKUAT-COETEC, 2024-12-20)
With the global increase in wind turbine distributed generators penetration, the need for a detailed assessment of the impacts of the wind turbine generators (WTGs) on a power systems distribution network operations has ...
Murage, David K.; Kirui, Kemei P.(JKUAT-COETEC, 2024-12-20)
Integrating distributed generations (DGs) into a power systems distribution network provides various benefits; however, their connection has associated several technical
implications with distribution network protection ...