Sam Kariuki

• Doctor of Engineering
• Lecturer at Technical University of Mombasa

Globally, attention has majorly been focused on pollution and exhaustion of fossil fuels allied to the conventional energy sources while the non-conventional energy/renewable energy sources have always been considered clean and environmentally friendly. Of the two, the non-conventional (renewable) is being preferred because it is believed to be mor...

As the energy costs continue to rise steadily, researchers are looking for alternative sources of energy to meet the rising demand for sustainable energy. Finding an inexpensive and reliable energy generation technology is a big challenge both in developed and developing countries. Innovation and invention of new technologies, mass production and e...

This paper explored the possibility of accurately predicting the classification of developing power swings. The notion of machine learning was employed, and tested the application of Decision Tree (DT) algorithms to wide area power system protection schemes. The novelty of the designed Wide Area Protection (WAP) scheme was portrayed by the WAP's ab...

This paper explored a novel method for strategic monitoring of a power system to schematically monitor power system variables that are sensitive to transients. The characteristics of a fully developed transient or power swing increase frequency slip rates, generator pole slips, rotor out-of-step etc. whose effects lead to loss of synchronism of coh...

This study was carried out to establish the levels of pollution caused by motor vehicles on our roads. The number of imported used vehicles in Kenya is increasing every day which contributes to increasing levels of pollutants in the environment. This study investigated the pollutants emitted by the road vehicles (i.e. CO, HC, NOx), their formation,...

Eighty six Klebsiella isolates from Kenyatta National Hospital and the Centre for Microbiology, Kenya Medical Research Institute, Nairobi were screened forresistance to commonly prescribed antimicrobial agents and for their plasmidcontent. Plasmids were transferred into Esherichia coli K-12 and resultingtransconjugants screened for resistance to th...

Klebsiella species isolates collected from the Kenyatta National Hospital and the Centre for Microbiology Research of the Kenya Medical Research Institute in Nairobi, Kenya were identified and screened for resistance to commonly prescribed antimicrobial agents. Most of the isolates were found to exhibit resistance to more than three agents amongst...

This study was designed to determine the bacteriological quality and some physico-chemical qualities of river, domestic and swimming pool water in Nairobi area. A total of 52 samples were analyzed. Out of these 20were from swimming pools, 18 were tap and 14 were river sample. The temperature means of swimming pool water was 21.4oC tap water 21.2 oC...

Micro-organisms resistant to antimicrobial drugs are a problem for health workers worldwide. As scientists discover newer and more effective agents to manage emerging therapeutic challenges, the micro-organisms develop novel mechanisms of resistance hitherto unknown. The challenge in the present day is to understand the mechanisms of resistance in...