Browsing MST-Department of Physics by Issue Date
Now showing items 1-20 of 208
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Thermal conductivity of EPDM rubber composites as a function of filler concentration and type.
(Kenyatta University, 1988)Thermal conductivities of EPDM (ethylene propylene diene monomer) rubber loaded with one of the following fillers: carbon black type N339, a reinforcing filler, kaolin, a non-reinforcing filler, and ground charcoal have ... -
Electrical Characterization of Cu and Al Doped Amorphous Semiconductor As2Se3
(Kenyatta University, 1988-10)The electrical conductivity and thermoelectric power of an amorphous semiconductor As2Se3 in pure and doped forms were studied with temperature. The dopants used were 1 at. % Cu and 1 at. % AI. Measurements on electrical ... -
The jahn-teller effect in the absorption band of activated crystals
(Kenyatta University, 1989) -
Electrical Characterization of Iodine Doped Organic - Semiconductor Polypropylene
(Kenyatta University, 1989-10) -
Gravity Survey in Magadi Geothermal Area
(Kenyatta University, 1999)Kenya has prominent geographical features such as the Rift Valley which gives rise to geothermal reservoirs which can be exploited to produce geothermal energy for power generation and heating. Lake Bogoria, Lake Magadi ... -
Microprocessor based multifunction signal generator
(Kenyatta University, 2001-10)Waveform generators are excellent tools to recreate real-world signals that offer precise sirnulations for innumerable challenging test conditions. Waveforms are, for example used in airbag deployment, multi-tone amplifier ... -
Dictionary Based Transform for Improving English Text Compression (Dbt)
(Kenyatta University, 2007)Text compression algorithms reduce the redundancy in data representation to decrease the storage and transmission time required for that data. One way of increasing text compression is to preprocess text before applying ... -
Design and fabrication of an electronic system for monitoring and controlling temperature, light illuminance and humidity in a greenhouse
(2011-05-09)Climate uncertainities pose a challenge to the production of food to feed the growing billions on the globe. Climatic conditions can change abruptly ruining farming efforts and leading to food shortages. Greenhouses attempt ... -
Design and simulation of a finite state machine suitable for micro-code execution
(2011-05-09)Digital processors are built from very large scale integration circuits and the software to design them is only available to the manufacturers themselves. There is a need to design a central processing unit using large, ... -
Study of SnxSey thin films for phase change memory (PCM) applications
(2011-07-14)Phase Change Random Access Memory (PCM) is one of the most optimized candidates for the next generation non-volatile memory due to its fast operation speed, high scalability, low power operation and fabrication costs. The ... -
Simulation of the charge ratio of cosmic ray muons in extensive air showers using corsika
(2011-07-14)The interaction of primary cosmic rays in the atmosphere produces, among other particles, pions and kaons. They decay to muons, which form an important component of extensive air showers, which can be measured on the Earth's ... -
Design and fabrications of a simple four points probe system for electrical characterization of thin films
(2011-07-26)The electrical characteristics of semiconductor thin films are of great practical interest in microelectronics industry hence the need to measure these parameters in a cheaper and faster manner possible. This study has ... -
Calculation of cross selection for elastic scattering of electrons by a magnesium atom at intermediate energies
(2011-08-01)Elastic electron-atom collision data from experimental and theoretical studies is useful in the interpretation of spectra obtained in X-ray photoelectron spectroscopy and Auger electron spectroscopy as well as in the Monte ... -
Design and fabrication of a microcontroller based electronic weighing machine in high mass regime
(2011-08-04)Electronic weighing technology presents management with rapid, timely and accurate information that provides quick turnaround times for customers. Its popularity can be attested by its use in all the sectors of the industry. ... -
Electron impact double excitation of (2s2) 1s and (2s2p) 1p states of helium atom using a distorted wave method
(2011-08-08)Cross section studies are important as they supply fundamental level researchers with necessary information and predictions for their experiments. Once experimental measurements agree with some prediction, the theoretical ... -
Influence of sputter power and sputter pressure on optical properties fo WOx thin films deposited by reactive DC magnetron sputtering
(2011-11-17)Soil fertility decline is an acute problem facing smallholder farmers in central highlands of Kenya. Availability of organic and inorganic nutrient resources, their management under spatially variable soil fertility ... -
Design and fabrication of microprocessor-based car length monitoring system
(2011-11-17)In our local car storage facilities in some of our major towns, the drivers spend a lot of time looking out for an appropriate space for their cars. In a simple system where cars are categorized on the dimension basis, ... -
Design and fabrication of a microcontroller based maximum power tracker
(2011-12-02)A photovoltaic array exhibits non-linear I-v characteristics and its maximum power point varies with solar insolation, operating voltage and temperature. This work deals with the design and laboratory implementation of a ... -
Dynamics mechanical analysis of unirradiated and gamma ray radiated injection molded virgin and recycled high density polyethylene
(2011-12-02)Modification in polymeric molecular structure can be brought about by either the conventional chemical means, usually involving silanes and peroxides, or by exposure to ionizing radiation, from either radioactive sources ... -
Screening measurement of indoor radon-222 concentrations by gamma-ray spectromentry in Kenyatta University
(2011-12-03)Rn-222 and its progeny are the largest contributors to the total effective dose received by the general public. It is therefore of great concern to monitor radon concentration in dwellings. Measurements of indoor 222Rn ...