• Effect of Dielectric Fluid and Vibration on Performance in Electrical Discharge Machining of AlSiC Metal Matrix Composites 

  Mwangi J. W.; Ikua B. W.; Nyakoe G. N.; Zeidler H; Kabini S. K (JKUAT, 2017-05-24)

  Metal Matrix Composites (MMC) belong to a new generation of engineering materials that have desirable qualities such as high strength-to-weight ratio, high toughness, low value of coefficient of thermal expansion, high ...
• Effect of Capacitance on Electrical Discharge Machining Using an RC type Pulse Generation Circuit 

  Kabini S. K.; Bojer S. K.; Ikua B. W.; Kihiu J. M.; Nyakoe G. N.; Mwangi J. W. (JKUAT, 2017-05-24)

  The Electrical Discharge Machining (EDM) Process is complex in nature partly due to the mechanism of material removal, and, partly due to the presence of many machining parameters. This complexity of the EDM process has ...
• Developments in Silicon Wafer Micromachining 

  Mulembo, T.; Ikua, B.; Keraita, J.; Niyibizi, A.; Wangui, E. (JKUAT, 2017-05-24)

  Most electronic components are based on monocrystalline silicon, with only a small percentage of them made of polycrystalline and amorphous silicon. Micromechanical components such as acceleration sensors in car safety ...
• An Evaluation of Maintenance Practices in Kenya: Some preliminary results 

  Muchiri, A.K.; Ikua, B.W.; Nyakoe G. N; Kabini S. K; Makenzi M. M (JKUAT, 2017-05-24)

  Over time, the definition of maintenance has evolved from activities meant to keep equipment in an operable condition, to a set of activities required to keep the means of production in the desired operating conditions ...
• 1D to 3D Coupling of an Infinitesimal Width Moving Laser on a Silicon Substrate 

  Mulembo, T.; Ikua, B.; Keraita, J.; Niyibizi, A.; Kagiri, C. (Proceedings of 2013 Mechanical Engineering Conference on Sustainable Research and Innovation, 2017-05-24)

  Micromechanical components such as acceleration sen-sors in car safety systems and micro-fluidic circuits are normally made of monocrystalline silicon. The modeling of laser microma-chining of complex shapes using silicon ...
• Radio Frequency (RF) Safety and Esthetic Concerns 

  Omae, O.; Ndungu, E.; Kibet, P.; Tarus, H. (JKUAT, 2017-04-12)

  Recent years has witnessed a rapid proliferation of wireless systems use in all walks of life. This proliferation has caused some concerns about safety and esthetics due to unprecedented increase of human exposure to EMF ...
• Optimal Control Strategy of NG Piston Engine as a DG Unit Obtained by an Utilization of Artificial Neural Network 

  Milewski, Jaroslaw (JKUAT, 2017-04-12)

  The paper presents a control strategy concept of a piston engine fueled by Natural Gas as a DG unit obtained by using an Artificial Neural Network. The control strategy is based on several factors and directs the operation ...
• Mechanical stirring and synergistic effect of Pr3+/Pr4+ and Ce4+ in improving the low-temperature reducibility of Pr-doped ceria nanoparticles 

  Mutinda, Samuel; Wang, Ruigang (JKUAT, 2017-04-12)

  We report that shape/size-controlled high surface area CeO2 and Pr-doped CeO2 solid solution nanoparticles were synthesized using a facile hydrothermal method. The effect of mechanical stirring during the initial stage of ...
• Heterogeneous Basic Catalysts for Transesterification of Vegetable Oils: A Review 

  Kumar, A (JKUAT, 2017-04-12)

  Biodiesels are biofuels made from renewable sources such as vegetable oils originating from plants and animal fats. Transesterification reaction is carried out by reacting triglycerides in oil/fat with an alcohol in presence ...
• Factors affecting dual pump fiber optical parametric amplification gain 

  Rotich, E.; Waswa, D. (JKUAT, 2017-04-12)

  The fiber nonlinear effects on the gain of fiber optical parametric amplifier (FOPA) are theoretically studied using MATLAB and optism. The results show that different channels interact giving varied degrees ...
• Fabrication of Zn4Sb3 Bulk Thermoelectric Materials Reinforced with SiC Nanosized Particles by Hot Extrusion Process 

  Akao, Takahiro; Uya, Kenji; Onda, Tetsuhiko; Chen, Zhong-Chun (2017-04-12)

  Zinc antimonide, Zn4Sb3, has been found as a promising thermoelectric material utilized in a temperature range of 200 ~ 500˚C, in which there exist vast waste-heat resources exhausted from many factories and vehicles. ...
• Effect of Laser Parameters on PMMA during Laser Micromachining: A FEMLAB Simulation 

  Ndeda, R.; Kioni, P. N.; Keraita, J. N. (JKUAT, 2017-04-11)

  Laser micromachining has been widely applied in the fabrication, production and manufacturing of Micro Electro Mechanical Systems (MEMS). It uses photo thermal melting or ablation to abricate a microstructure. The use of ...
• Adapting Information Technology as a Contrivance to Enhance Sustainable Entrepreneurship through Handy Banking Habits 

  Achieng, Maureen (JKUAT, 2017-04-11)

  This article reports the work done after exploring the challenges faced by both the Small and Medium Enterprises (SMEs) and the banking industry in the management of finances; especially the payment of utility bills and ...
• A Laboratory Scale Investigation of Dry Coal Benefeciation in an Air Fluidized Bed: Effects of Particle Size, Shape and Density 

  Makokha, Augustine (JKUAT, 2017-04-11)

  Coal is a fossil fuel that forms under the earth by natural processes. The Potential markets for coal include power generation, export, domestic, metallurgical, liquefaction and cement processing industries. In Kenya, coal ...
• A survey of Ultrasonic Waves in Powder Transportation 

  Murimi, E.; Kihiu, J.; Nyakoe, G.; Mutuli, S. (JKUAT, 2017-04-11)

  Ultrasound technology has become an important aspect in material handling and machining. This paper describes the application of standing and traveling ultrasonic waves in powder transportation and how their usefulness ...
• Dynamic Analysis of Multi-Body Mechanical Systems with Imperfect Kinematic Joints: A Literature Survey and Review 

  Ikua, Bernard; Kihiu, John; Muvengei, Onesmus (COETEC, 2017-04-06)

  In traditional dynamic modeling of multi-body mechanical systems, the kinematic joints are assumed to be ideal or perfect, i.e., the clearance, friction, wear, and lubrication effects at the joints are neglected in order ...
• Combustion and Emission Characteristics of a Low Emission and Highly Efficient PCCI Diesel Engine 

  Yokobe, Sumito; Kawahara, Nobuyuki; Tomita, Eiji; Kiplimo, Robert (COETEC, 2017-04-06)

  The combustion and emission characteristics of a low emission and highly efficient premixed charge compression ignition diesel engine operated with moderate amount of exhaust gas recirculation was investigated in a single ...
• Climate Change Mitigation through Standards and Labels 

  Maina, Karuga (COETEC, 2017-04-06)

  The Standards and Labeling Programme in Kenya is a 5year Government of Kenya initiative being implemented under the Ministry of Industrialization. This Climate Change Mitigation Programme jointly funded by the United Nation ...
• Analysis of Harmonic order levels at Power Lines to Improve the Power Quality 

  Ngoo, Livingstone; Nderu, J. N.; Ndungu, C.M. (COETEC, 2017-04-06)

  This work aims at analysis and establishing harmonic levels at various points of KPLC power lines. It involved collection of harmonic order levels from generation, distribution and point of common coupling (PCC). The data ...
• An Insight into the Sources of the Bentonite used in the Local Drilling Industry 

  . Ikua, B. W; Maranga, S. M.; Mutisya, Peter K. (COETEC, 2017-04-06)

  Bentonite is a type of clay mineral that is used in a variety of applications such as drilling, sand casting, pelletizing iron ores, in insecticides, pet-litter, pharmaceuticals and cosmetics. In this paper, the findings ...

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