ABSTRACT The rapidly growing Nakuru town needs expansion to accommodate the increasing population. This vast expansion can only be done at the outskirts of the town. However, no single research has been done with the aim of checking the geological stability of the regions around Nakuru town; either by mapping new fault zones or by confirming using geophysical methods the presence of faults shown on geological maps. Kiamunyi estate being in the outskirts of the town was therefore chosen for t...
Abstract: A geophysical investigation has been performed using Vertical Electrical Sounding (VES) at a site behind Sammy Guest House in Ikere-Ekiti, Ekiti-State to examine the geophysical parameters that can be used to evaluate the structural competence of the shallow section of the subsurface for construction purposes and building development. The schlumberger configuration was used for the data acquisition. The half- currents electrode (AB/2) was used and the quantitative interpretation of...
ABSTRACT The wide range of applications, the industrial processing techniques and storage of collagenous materials expose them to a variety of environmental conditions such as temperature, humidity and solar ultraviolet (UV) radiations. In this study, a freshly flayed hide from a mature Boran bovine was prepared to pickling stage using conventional tanning processes. The hide was then cut into two halves along the backbone. One half was left at pickled stage while the other half was tanned us...
ABSTRACT Radon gas is the most important source of natural radiation. Indoor radon concentration is the main path of human exposure to high radon concentration. Radon contribution from concrete block walls of typical Nigerian dwellings has been estimated from gamma ray spectroscopy measurements of radium concentration using generic equation. The radon concentrations varied from 11.27 Bq m-3 for a dwelling of dimensions 4.8 m × 4.8 m and 18.52 Bq m-3 for a dwelling of 3.6 m × 3.6 m. The eff...
ABSTRACT The Nsukka area is a sedimentary basin within the Anambra basin which is part of the lower Benue trough. The Nsukka sheet (covering the aeromagnetic data of Nsukka) lies between latitudes 6030΄ and 7000ʹNorth and longitudes 7000ʹ and 7030ʹEast. The IGRF corrected aeromagnetic data ofNsukka sheet, southeastern Nigeria has been interpreted using the standard Euler deconvolution, source parameter imaging,forward and inverse modelling methods with the objectives of determining the d...
ABSTRACT Deaths due to Human Immunodeficiency Virus (HIV) related diseases are still very high, especially in Africa. This is mainly attributed to poor diagnosis and late detection of the virus at times when the virus has greatly multiplied within the human body. In an attempt to come up with early detection mechanisms of the virus, several investigations have been carried out. The current detection mechanisms are less rapid with some being. Here we report on the potential of Raman spectrosco...
ABSTRACT Information signals need to be transmitted fast, efficiently and accurately. Optical fiber cables are the transmission medium used in optical fiber communications. Optical fiber communication has exhibited many advantages over other means of communication. However, natural and physical environment within the vicinity where the cable is installed poses a great challenge to signal transmission. The effect of bends on the quality of the output signal generated by a continuous wave (CW)...
ABSTRACT A total of 660 discrete jumps in the rotation frequency (ı) and the spin-down rate (ıı) of about 140 pulsars were studied. Out of the 660 discrete jumps, 394 were classical glitches (the so-called macroglitches) and 266 were microglitches. The objects are grouped into normal radio pulsars, anomalous x-ray pulsars and recycled millisecond pulsars. A bimodal distribution was observed in many of the pulsar glitch parameters, namely the discrete absolute fractional jumps in the rotat...
ABSTRACT Polyethylene (PE) is a polymer of ethylene (ethene) used in the manufacture of packaging bags. The considerable growth in use is due to the beneficial properties it has over other alternatives. These include, extreme versatility, it is light, extreme durability, resistance to chemicals, water and impact, good hygiene properties for food packaging, excellent thermal and electrical insulation properties and relatively inexpensive. However PE disposal is a challenge, resulting in the u...
ABSTRACT Paka volcano is situated in active northern Kenya rift. It is considered one of the geothermal prospects. It has been covered by most studies that focused on the regional tectonic evolution of the East Africa Rift, lithospheric and crustal structural analysis. However, regional analysis overlooked local analysis, where key geothermal structural features like thin massive intrusive and shallow faults that are significant have remained relatively poorly constrained. Hence, the key conc...
ABSTRACT Visible light plays an important role in the survival of species in our ecosystem. Light signals control seed germination, leaf expansion and stem elongation. Visible light consists of electric and magnetic fields. Earlier studies have focused on the exposure of magnetic field for a short span on the growth of plants, this study will investigate the effect of magnetic field on the whole lifespan of spinach with emphasis on its effect on chlorophyll and elemental composition. In this ...
ABSTRACT Geomagnetic storms are temporal disturbances of the Earth’s magnetosphere caused by a prolonged southward interplanetary magnetic field and usually coinciding with the arrival of coronal mass ejections (CME). Most geomagnetic storms occur under disturbed condition making it intrinsically uneasy to distinguish one geomagnetic storm from another especially in respect of the solar origin. Thirty four (34) geomagnetic storms occurring between 1997-2012 have been studied whose storm si...
ABSTRACT The disinfection of water is of prime importance both for the animals and humans, since the presence of microorganisms in water may cause diseases including hepatitis, cholera, typhoid fever and dysentery. Reagents, techniques based on the use of a broad range of chemical agents are commonly used to disinfect water. Among them are chlorine, fluorine, ozone and ions of heavy metals. However, in the case where some organic substances remain in water, chlorine and ozone reacts with them...
ABSTRACT Cobalt (III) oxide (Co3O4) thin films were deposited on glass substrates at a temperature of 70°C with continuous stirring and heating of the alkaline bath of various pH of 8, 10, 12 and 14. Cobalt (II) chloride hexahydrate (CoCl2·6H2O) was used as source of Co2+ and to make it alkaline, 25% aqueous ammonia solution was added as the complexing agent with constant heating and stirring. The bath was doped with zinc nitrate (Zn(NO3)2 and later, some samples were annealed at 200°C fo...
ABSTRACT Polyethylene (PE) bags have become the most widely used plastic commodity due to the fact that they are light and have good barrier properties against water and water – borne organisms. The energy requirements for their production as compared to other materials are much lower and the effluents emitted during manufacture of PE compared to paper bags (from trees) are much lower. They are however non-biodegradable and hence are one of the top environmental pollutants. Environment fri...