Browsing Research Articles by Issue Date

Now showing items 1-20 of 1166

Use of magnesium alloys in optimizing the weight of automobile: Current trends and opportunities

Mutua, James; J. M., Kihiu; Rading, G. O.; Kimotho, J. K. (2-02-13)

Magnesium alloys are characterized by unique properties, which when fully exploited offer opportunities for structural applications in automobiles. This paper will identify the main features of magnesium alloys and ...
The Effect of Salinity on Growth, Inorganic Ions and Dry Matter Partitioning in Sugar Beet Cultivars

Dadkhah, A. R.; Grrifiths, H. (JKUAT, 2-02-15)

This study investigated intra-specific variation in the growth parameters and dry matter partitioning of sugar beet cultivars at different levels of salinity (0, 50, 150, 250 and 350 mM NaCl + CaCl2 in 5:1 molar ratio) ...
A survey on disease prevalence, ectoparasite infestation and chick mortality in poultry populations of Kenya

Ommeh; Ogada, S; Lichoti, J; Oyier, P A (Livestock Research for Rural Development, 2-06-05)

Backyard poultry production in Africa suffers major setbacks due to factors such as disease and parasite infestation. This has resulted to dwindling quantities of meat and eggs produced and also increased mortality rate ...
Modeling Parametric Vibrations of a Multistage Gear Train as a Tool for Design Optimization

Kuria, James; Kihiu, John (International Journal of Mechanical, Industrial and Aerospace Engineering, 2-09-03)

This work presents a numerical model developed to simulate the dynamics and vibrations of a multistage tractor gearbox. The effect of time varying mesh stiffness, time varying frictional torque on the gear teeth, lateral ...
Farmers’ Knowledge on Macadamia Genetic Diversity in Kenya as a Means for in situ Conservation

Gitonga, Lucy N.; Kahangi, Esther M.; Muigai, Anne W.T. ....Et al (20-02-15)

Macadamia, a member of the family Proteaceae, is widely grown in Kenya as an alternative cash crop to tea and coffee, but varieties adapted to different agro-ecological zones are still lacking. Macadamia breeders require ...
The public sector nursing workforce in Kenya: a county-level analysis

Waudo, Agnes; Todd, Jim; Kiriinya, Rose; Ochieng, Jacob; Mbindyo, Patrick; Wakaba, Mabel (Wakaba et al. Human Resources for Health, 20-03-06)

Background: Kenya’s human resources for health shortage is well documented, yet in line with the new constitution, responsibility for health service delivery will be devolved to 47 new county administrations. This ...
The effect of chamfer and size on the stress distributions in a thick-walled cylinder with a cross bore under internal pressure

Kihiu, J.M.; Masu, L.M. (American Society of Mechanical Engineers, 1995-07)

The hoop stress and stress concentration factor distributions in a closed ended thick-walled cylinder with a chamfered cross bore under intemt,al pressure were inaestigated. The finite element method of stress analysis ...
Lathe stability charts via acoustic emission monitoring

Keraita, J. N.; Oyango, H. J.; Misoi, G. K. (AJOL, 2001-12)

Signal parameters characterizing acoustic emission (AE) detected during metal cutting have been theoretically correlated in a simple manner, to the work material properties, cutting conditions, and tool geometry. During ...
An intervention to improve paediatric and newborn care in Kenyan district hospitals: understanding the context

Mbindyo, Patrick; Mike English, Stephen Ntoburi, John Wagai, Newton Opiyo, Philip Ayieko, Charles Opondo, Santau Migiro, Annah Wamae, Grace Irimu (BioMed Central, 2009-07-23)

Abstract Background: It is increasingly appreciated that the interpretation of health systems research studies is greatly facilitated by detailed descriptions of study context and the process of intervention. We have ...
STRESS CONCENTRATION FACTORS IN THICK WALLED CYLINDERS WITH ELLIPTICAL CROSS-BORES

Kihiu, J.M.; Adenya, C. A. (JKUAT, 2010)

Computer simulations were conducted to determine the elastic stress concentration factors in the vicinity of an elliptical cross-bore in a closed ended thick walled cylinder. The orientation of the elliptical cross-bore with ...
The importance of Open Access for research from Kenya and other African countries

Abukutsa, Mary Oyiela Onyango (2010-03-20)
Isolation and characterization of Streptomyces species with antifungal activity from selected national parks in Kenya

Nonoh, James Oluoch; Lwande, Wilber; Masiga, Daniel; Herrmann, Rafi; Presnail, James K.; Schepers, Eric; Okech, Matilda Angela; Bagine, Richard; Mungai, Paul; Nyende, Aggrey Bernard; Boga, Hamadi Iddi (Academic Journals, 2010-05)

Microorganisms and their natural products are potentially important for the biological control of crop diseases without detrimental effects to the environment. In this study, acetonitrile-methanol extracts of 361 actinobacterial ...
Effect of financial management practices on effectiveness of performance contracting in service delivery of local authorities in Kenya.

Mwangi, E. K., Gakure, R., Arasa, R., & Waititu, A. (2014) (International Journal of Social Sciences and Entrepreneurship,, 2010-06)

This study was an assessment of factors influencing the effectiveness Performance Contracting from in Service Delivery in Local Authorities of Kenya. Public outcry on quality of services is not uncommon in public sector ...
Closed-loop transmit diversity (transmit beamforming) for mitigation of interference and multipath fading in wireless communication systems

Konditi, D. B. O.; Rugara, M.; Musyoki, S. (JKUAT, 2011)

The wireless communication channel suffers from many impairments such as the thermal noise often modeled as Additive White Gaussian Noise (AWGN), the path loss in power as the radio signal propagates, the shadowing due ...
Evaluating performance of WRP and AODV manets routing protocols under mobility

Mureu, E.W. (JKUAT, 2011)

The Mobile ad hoc networks (MANET) is a wireless networks which have no central bridge, and where each node acts as a destination as well as a router. The MANETs are dynamic networks because the network topology keeps on ...
Determination of resonant frequency of a piezoelectric ring for generation of ultrasonic waves

Kihiu, J.M.; Nyakoe, George; Murimi, Evan; Mutuli, Stephen (IISTE, 2011)

Ultrasound technology has become an important aspect in material handling and machining. Standing and traveling ultrasonic waves have been applied in powder transportation, feeding, dosing and supply of small amounts ...
A Survey of Quality Control Practices in the Local Aluminium Scrap Foundries

Wangombe, D. N.; Maranga, S.M.; Kihiu, J.M.; Kosgey, B. K.; Maube, S. E. (JKUAT, 2011)

Quality control reduces rejects and increases production in a foundry. Use of high standard equipment, technics and competitive workforce results in quality products. Industries can be classified on the basis of raw ...
Effect of Heating on Absorption of CO2 as Greenhouse Gas in a Structured Packed Scrubber

Kibicho, K.; Ndiritu, H.M.; Gathitu, B.B. (JKUAT, 2011)

Increase in greenhouse effect in which more infra-red radiations are getting trapped within the earth has been traced to fossil fuel emissions. Among these emissions, carbon dioxide has been the driving force behind ...
Optimal placement of a piezoelectric ring in an ultrasonic powder transport system

Kihiu, J.M.; Murimi, Evan; Nyakoe, George; Mutuli, Stephen (IISTE, 2011)

The transport of powder materials is an important aspect of process engineering. Various industries such as the food, chemical, pharmaceutical, coating, information and telecommunication industries have set a high demand ...
Use of ICT in Manufacturing to Achieve Vision 2030

Omae, M. O; Ismail, Adeya (JKUAT, 2011)

Information & Communication Technology (ICT) may be defined as computer hardware and software and telecommunications technology. ICT is the World’s fastest growing economic activity; the sector has turned the globe into ...

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