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...
ABSTRACT We have studied the variability of Cosmic rays flux during solar quiet days at mid and high latitudes. By using the five (5) quietest days for each month, the monthly mean diurnal variation of cosmic ray anisotropy have been derived for the period 1981-2007, which covers part of cycles 21, 22 and 23. These quiet days are days during which the sun is relatively magnetically quiet, leading to less anisotropic behavior in the diurnal flux of cosmic rays measured on the earth’s surfac...
Abstract Observational works on 4.83 GHz Formaldehyde (H2CO) absorptions and 4.87 GHz H110α radio recombination lines towards 6.7 GHz Methanol (CH3OH) maser sources are presented. Methanol masers provide ideal sites to probe the earliest stages of massive star formation, while 4.8 GHz Formaldehyde absorptions are accurate probes of physical conditions in dense and low temperature molecular clouds towards massive star forming regions. Feature similarities between the formaldehyde absorptions...
ABSTRACT Computers use electric current to process information. Heat is generated in computer components whenever current flows through it, the heat generation causes unavoidable heat build up and a subsequent temperature rise at and around the components. High operating temperature is dangerous to the safety and reliability of components since the failure rate of computer components increases almost exponentially with the increase in operating temperatures. Similarly, the heat generation lea...
ABSTRACT Galactic cosmic rays are modulated in the hliosphere primarily due to the global merged interaction regions with intense magnetic field which leads to a decrease in the galactic cosmic rays throughout the heliosphere. Using long term averages of solar wind (SW) component parameters in addition to cosmic ray count rates of two high latitude Neutron monitor stations (Apatity and Thule) and two mid latitude stations (Newark and Tbilisi) with different rigidity cut-offs, we analyzed the...
In this research we studied the global warming by knowing the definition, and the causes. This research covers the Earth's atmosphere in details and the gases in each layer. Also the physical properties (pressure, thickness, temperature, speed of sound, density, mass), optical properties (scattering, absorption, emission, refractive index). Other aspects such as the Industrial Revolution and its role in the increase of greenhouse gases, the study covers United States of America, and Chi...
This study comprises the synthesis and spectral properties of three chalcones 3-(4-n (dimethylamino)phenyl)-1-phenyl-(2E)-propen-1-one (DMAPPP),1-(4-methylphenyl)- 3-(4- N, N-dimethyl amino phenyl)-2-propen-1-one (MDMAPP) and 1-(4- chloridephenyl)-3-(4- N, N dimethyl amino phenyl)-2-propen-1-one (CPDAPP) in several organic solvents have been studied. Photophysical characteristics such as absorption, fluorescence spectra, stokes' shift, fluorescence and quantum yield of these chalcones w...
Abstract. The mechanism behind the formation of alloyed ohmic contacts to p-type InP doped in the 1016 cm-3 range has been investigated. Techniques used for - characterising the contacts include the scanning electron microscope (SEM), specific contact resistance measurements, x-ray diffractometry (XRD), energy dispersive x-ray analysis (EDAX) and Auger electron spectroscopy (AES). Both temperature and time of annealing were varied during the study. The results obtained using our annealing pr...
The importance of this research comes from made a new material (Emulsion Definition) by used Gum Arabic and Black seed oil. The aim of this Research is Determine The optical properties of (Emulsion Definition) that made by used Gum Arabic Solution and black seed oil Such as (absorbance, transmission, reflection, absorption coefficient, extinction coefficient, refractive index and optical energy band gap) and to compare the result with pure gum Arabic solution result. In this research F...