• Biocontainment of polychlorinated biphenyls (PCBs) on flat concrete surfaces by microbial carbonate precipitation 

  Okwadha, George (2015-09-02)

  In this study, a biosealant obtained from microbial carbonate precipitation (MCP) was evaluated as an alternative to an epoxy-coating system. A bacterium Sporosarcina pasteurii strain ATCC 11859, which metabolizes urea and ...
• Evaluation of Surface Water Runoff from Fly Ash–Stabilized and Nonstabilized Soil Surfaces 

  Okwadha, George (2015-09-02)

  This study evaluated the constituent make up of simulated rainwater runoff from Class C fly ash–stabilized and nonstabilized clay soil using laboratory test pads to assess the potential for impacts to surface water from ...
• Thermal Removal of Mercury in Spent Powdered Activated Carbon from TOXECON Process 

  Okwadha, George (2015-09-02)

  This research developed and demonstrated a technology to liberate Hg adsorbed onto powdered activated carbon PAC by the TOXECON process using pilot-scale high temperature air slide HTAS and bench-scale thermogravimetric ...
• Optimum conditions for microbial carbonate precipitation 

  Okwadha, George (2015-09-02)

  The type of bacteria, bacterial cell concentration, initial urea concentration, reaction temperature, the initial Ca2+ concentration, ionic strength, and the pH of the media are some factors that control the activity of ...
• Experimental and Numerical Investigation into Turbulent High Reynolds Number Flows Through a Square Duct with 90-Degree Streamwise Curvature - II Numerical Methods 

  Ondore, Faustin (2015-07-13)

  A square duct with a 90-degree streamwise curvature is representative of complex flow domains. Such flow domains are encountered in the designs of fluids engineering systems, especially in the aerospace turbo-machinery ...
• Development of a remote sensing methodology for analyzing shifting cultivation and grazing patterns in the semi-arid region of Kenya. 

  Wayumba, GO (1983)
• Parameter optimization in design of a rectangular microstrip patch antenna using adaptive neuro-fuzzy inference system technique 

  Rop, K.V; Konditi, D.B.O; Ouma, H.A; Musyoki, S.M (2012)

  Modern wireless system s are placing greater emphasis on antenna designs for future development in communication technology becau se the antenna is a key element in the overall communication system. A Microstrip ...
• Traffic Analysis in the Reduction of Power Consumption in Cellular Radio Access Network 

  Kimanthi, Shadrack; Kibet, P. L; Musyoki, S (2015)

  All over the world cellular network communication has become an integral part of people’s lives. This has changed how people behave and their demand for connectivity is anywhere and anytime. Understanding the subscriber ...
• Improving the Bandwidth of a Circular Microstrip Patch Antenna through Shape Modification 

  Langat, Benard Kipkorir; Langat, Kibet P; Musyoki, Stephen (2014)

  An antenna is used in a communication system to radiate or receive radio waves. The most desired antenna is one which is small in size, light in weight, cheap and can easily fit to the surface attached. All these features ...
• Performance Analysis of Pulse Shaping Filter for WCDMA Applications 

  Ombongi, Filbert Onkundi; Kibet, Philip Langat; Musyoki, Stephen M (2014)

  The wireless systems with spreading of a signal experiences time delay which has to be smaller compar ed to symbol period of the data. The condition can’t be met in high data rate transmissions which ...
• Simulation of the influence of secondary electrons on the performance of potential depressed collectors for TWTs 

  Musyoki, Stephen; Takahashi, M; Uchikawa, T (2000)

  Significant differences have been found between measured and simulated data for collectors designed with codes which disregard the influence of secondary electrons. To solve this problem, various codes have been developed. ...
• A new method of emittance measurement for electron beams from the Micro-emitter 

  Ishizuka, Hiroshi; Nakahara, Yuriko; Kawasaki, Sunao; Musyoki, Stephen; Shimizu, Hiroshi; Watanabe, Akihiko; Shiho, Makoto (1994)

  Recently a new type of cathode called Micor-emitter has been put in progress. This cathode is a microfabricated field emitter having the characteristics of very low emittance and high brightness. We cannot measure the ...
• Auto-resonant eniotron oscillator using a magnetron type cavity 

  Musyoki, Stephen; Yokoo, Kuniyoshi; Sato, Nobuyuki; Ono, Shoichi (1991)

  In an ideal auto-resonant eniotron oscillator (ARPO), all the electrons are able to give almost all their kinetic energy to an electromagnetic wave, resulting in a conversion efficiency of nearly 100%. However, the electric ...
• An overview of the Faculty of Infomation Technology in 2009. 

  Marwanga, Reuben O (2009)
• Influence of graphite morphology, matrix structure on gray iron machining 

  Marwanga, Reuben O; Robert, C. Voigt; Paul, H. Cohen (2000)
• Biocontainment of PCBs on flat concrete surfaces and coprecipitation of PCBs and metals in boiler chemical cleaning wastewater by microbial carbonate precipitation 

  Okwadha, GDO (2010)

  Some industrial equipment such as electric transformers and capacitors are located in vaults and substations on flat concrete surfaces. Due to accidents, normal routine maintenance or replacements, these equipments may ...
• Evaluation of Surface Water Runoff from Fly Ash–Stabilized and Nonstabilized Soil Surfaces 

  Dombrowski, Frank J; Ramme, Bruce W; Okwadha, GDO; Kollakowsky, Dave (2010)

  This study evaluated the constituent make up of simulated rainwater runoff from Class C fly ash–stabilized and nonstabilized clay soil using laboratory test pads to assess the potential for impacts to surface water from ...
• Thermal removal of mercury in spent powdered activated carbon from Toxecon process 

  Okwadha, GDO; Li, Jin; Ramme, Bruce; Michaud, Dave; Kollakowsky, Dave (2009)

  This research developed and demonstrated a technology to liberate Hg adsorbed onto powdered activated carbon (PAC) by the TOXECON process using pilot-scale high temperature air slide (HTAS) and bench-scale thermogravimetric ...
• Biocontainment of polychlorinated biphenyls (PCBs) on flat concrete surfaces by microbial carbonate precipitation 

  Li, Jin; Okwdha, GDO (2011)

  In this study, a biosealant obtained from microbial carbonate precipitation (MCP) was evaluated as an alternative to an epoxy-coating system. A bacterium Sporosarcina pasteurii strain ATCC 11859, which metabolizes urea and ...
• Optimum conditions for microbial carbonate precipitation 

  Okwadha, George D.O; Li, Jin (2010)

  The type of bacteria, bacterial cell concentration, initial urea concentration, reaction temperature, the initial Ca2+ concentration, ionic strength, and the pH of the media are some factors that control the activity of ...

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