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Browsing JSRI papers by Title

Browsing JSRI papers by Title

Now showing items 12-31 of 39

Effect of Cooling Rate and Heat Treatment on the Microstructure and Impact Resistance of Recycled Aluminium Sand Cast Alloy

Maube, Shem E.; Wang’ombe, Daniel N.; Maranga, Stephen M. (JKUAT, 2016-09-21)

In this study the effect of cooling rate and heat treatment on the microstructure and impact resistance of aluminium alloy A356 were investigated. The alloy was obtained from recycled aluminium alloy wheels that were melted, ...
Evaluation of Greenhouse Gas Emissions along the Small-Holder Coffee Supply Chain in Kenya

Maina, Joan Jepngetich; Mutwiwa, Urbanus; Githiru, Mwangi; Kituu, Gareth (JOURNAL OF SUSTAINABLE RESEARCH IN ENGINEERING, 2016-07-21)

Coffee plays an important role in sustaining millions of livelihoods around the world. The production of Arabica coffee is greatly affected by the changing climate. Besides suffering from changing climate, coffee is also ...
Evaluation of Greenhouse Gas Emissions along the Small-Holder Coffee Supply Chain in Kenya

Joan.J. Maina1*, Urbanus. N. Mutwiwa1, Gareth. M. Kituu1 and M. Githiru2 1Department of Agricultural and Bio-systems Engineering School of Bio systems and Environmental Engineering, Jomo Kenyatta University of Agriculture and Technology, P.O. BOX 62000-00200 Nairobi 2Wildlife Works, P.O. BOX 310-80300 Voi (SRI, JKUAT, 2016-07-11)

Coffee plays an important role in sustaining millions of livelihoods around the world. The production of Arabica coffee is greatly affected by the changing climate. Besides suffering from changing climate, coffee is also ...
An Experimental Investigation on Engine Performance and Emission of a Varied Injection Pressures Compression Ignition Croton-Diesel Blends Engine

Maswai, Obadiah; Kiplimo, Robert; Ndiritu, Hiram (JKUAT, 2016-09-19)

In this study, a direct injection compression ignition (DICI) engine was modified to utilize croton esters-diesel blends in equal ratio and at varied fuel injection pressures. The main aim of this research is tomake use ...
An Experimental Investigation on Engine Performance and Emission of a Varied Injection Pressures Compression Ignition Croton-Diesel Blends Engine.

Maswai, Obadiah Kipkemei; Kiplimo, Robert; Ndiritu, Hiram (SRI, JKUAT, 2016-08-03)

In this study, a direct injection compression ignition (DICI) engine was modified to utilize croton esters-diesel blends in equal ratios and at varied fuel injection pressures. The main aim of this research is to make use ...
An Experimental Investigation on Engine Performance and Emission of a Varied Injection Pressures Compression Ignition Croton-Diesel Blends Engine.

Obadiah, Kipkemei Maswai; Obadiah, Kipkemei Maswai; Robert, Kiplimo; Hiram, Ndiritu (SRI JKUAT, 2016-07-21)

In this study, a direct injection compression ignition (DICI) engine was modified to utilize croton esters-diesel blends in equal ratios and at varied fuel injection pressures. The main aim of this research is to make use ...
Improving the Bandwidth of a Circular Microstrip Patch Antenna through Shape Modification

Benard Kipkorir Langat, Kibet P. Langat, Stephen Musyoki (SRI, JKUAT, 2016-08-03)

JOURNAL OF SUSTAINABLE RESEARCH IN ENGINEERING Notifications View Subscribe Information For Readers For Authors For Librarians User Username Password Remember me Journal ...
Investigation on Hardness of Gravity Die Cast Secondary Al-10Si Piston Alloy with Trace Addition of Sr, Fe and Mn

Kosgey, B. K.; Maranga, S. M.; Kihiu, J. M.; Ando, Y. (JKUAT, 2016-09-22)

This paper investigates the effect of minor elements on Brinell hardness properties of Al-10Si alloy. This investigation was carried out with the aim of improving the properties of recycled cast Al-Si alloys so as to enhance ...
Loop Mediated Isothermal Amplification for Detection of Trypanosoma brucei gambiense in Urine and Saliva Samples in Nonhuman Primate Model

Ngotho, Maina; Kagira, John Maina; Gachie, Beatrice Muthoni; Karanja, Simon Muturi; Waema, Wambua Waema; Maranga, Dawn Nyawira; Maina, Naomi Wangari (JKUAT, 2016-09-21)

Human African trypanosomiasis (HAT) is a vector-borne parasitic zoonotic disease. The disease caused by Trypanosoma brucei gambiense is themost prevalent in Africa. Early diagnosis is hampered by lack of sensitive diagnostic ...
Maintenance Strategy Selection using Analytic Hierarchy Process

Muinde, Peter M; Muchiri, Peter N; Ikua, Bernard W. (JKUAT, 2016-09-22)

Maintenance of industrial equipment is faced with the challenges of lack of systematic approach in setting maintenance instructions and lack of robust maintenance decision making. A maintenance strategy is always followed, ...
Neuro-fuzzy Control of Laser Percussion Drilling

Ruthandi, Martin M.; Ikua, Bernard W.; Nyakoe, George N.; Keraita, James N. (JKUAT, 2016-09-22)

Non-Conventional methods have recently been employed in the drilling of materials such as super alloys which are hard to machine using mechanical conventional methods. These materials are mainly used in turbines in the ...
Nonparametric Mixed Ratio Estimator for a Finite Population Total in Stratified Sampling

Orwa, George Otieno; Otieno, Romanus Odhiambo; Mwita, Peter Nyamuhanga (Pakistan Journal of Statistics and Operation Research, 2016-09-14)

We propose a nonparametric regression approach to the estimation of a finite population total in model based frameworks in the case of stratified sampling. Similar work has been done, by Nadaraya and Watson ...
Performance Analysis of a Direct Drive Permanent Magnet Generator for Small Wind Energy Applications

Akello, Philip Oketch; Ochieng, Francis Xavier; Kamau, Joseph Ngugi (JKUAT, 2016-09-22)

This paper describes performance analysis of a direct drive Axial Flux Permanent Magnet (AFPM) generator developed for small scale wind energy applications. The design process approach began by a field survey intended to ...
The Performance of a Resistance-Capacitance Type Pulse Generation Circuit in Electrical Discharge Machining

Kabini, Karanja; Bojer, Sile K; Ikua, Bernard W.; Kihiu, John M.; Nyakoe, George N.; Wamai, James W. (JKUAT, 2016-09-30)

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 ...
Performance of Activated Carbon Prepared from Sawdust as an Adsorbent for Endosulfan Pesticide

Kakoi, Beatrice; Kaluli, James Wambua; Thumbi, George; Gachanja, Anthony (JKUAT, 2016-09-22)

Pesticides are used world over to protect crops. However, these are poisonous chemicals, and consuming water contaminated with pesticides exceeding safe concentrations could negatively affect human health. A study was ...
Performance of Adaptive Bandwidth Allocation for Multimedia Handover Services in UMTS mobile Cellular Networks

Omosa, Edwin; Langat, Kibet; Musyoki, Stephen (JKUAT, 2016-09-22)

With the ever growing multimedia services in the telecommunication industry, Quality of Service (QoS) provisioning in cellular networks is becoming more challenging. Studies have suggested that QoS requirements can be ...
Performance of Adaptive Bandwidth Allocation for Multimedia Handover Services in UMTS mobile Cellular Networks

Musyoki, Stephen; Omosa, Edwin; Langat, Kibet (SRI JKUAT, 2016-07-21)

With the ever growing multimedia services in the telecommunication industry, Quality of Service (QoS) provisioning in cellular networks is becoming more challenging. Studies have suggested that QoS requirements can be ...
Performance of Adaptive Bandwidth Allocation for Multimedia Handover Services in UMTS mobile Cellular Networks

Edwin Omosa 1, Kibet Langat1 and Stephen Musyoki2 1Department of Telecommunication Engineering,Jomo Kenyatta University of Agriculture and Technology(JKUAT),P.O box 62000-00200, Nairobi, Kenya. 2Technical University of Kenya(TUK), Department of Electrical and Electronics Engineering, P.O. Box 52428, Nairobi, Kenya. (SRI, JKUAT, 2016-07-11)

With the ever growing multimedia services in the telecommunication industry, Quality of Service (QoS) provisioning in cellular networks is becoming more challenging. Studies have suggested that QoS requirements can be met ...
Performance of Aluminium A356 Alloy based Buckets towards Bending Forces on Pelton Turbines.

Mbiu, Richard N.; Maranga, S. M.; Ndiritu, Hiram (JKUAT, 2016-09-22)

Based on affordability, small turbines are forced to operate above optimum conditions in order to produce maximum power making them to fail under excessive water jet loading. Performance of Aluminium A356 alloy based Pelton ...
The Performance of an RC type Pulse Generation Circuit in Electrical Discharge Machining

Kabini, Samuel Karanja (SRI JKUAT, 2016-07-21)

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 ...

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