Abstract: In the past, Ethiopia was rich in natural resources. As population pressure increased, resources have been exploited greatly. In the study area the need to expand cultivated has led to the removal of well-adapted, nutrient additive indigenous trees. The study was conducted in Bisho watershed, Southern Ethiopia, to evaluate the Effect of Eucalyptus camaldunesis Dehnh. and Croton macrostachyus Del. and distance away from tree trunk on selected soil chemical and physical properties in...
Abstract: The over increasing antibiotic resistance of pathogens has driven a global initiative towards the search for new sources of antimicrobial substances mainly from medicinal plants. Based on the existing traditional claim, this study investigated the antimicrobial activities and phytochemical composition of crude extracts of Aloe pirottae and Aloe mcloughlinii. Antibacterial activities of the extracts was conducted on test organisms using the disc diffusion method. The minimum inhibit...
Abstract: Portulaca oleracea L. commonly known as Purslane is a herbaceous weed. Purslane is a very good source of alpha Linolenic acid, which is an omega-3- fatty acid. The aim of this study was to determine the Physico chemical properties and antioxidant activities of oil from purslane leaf, stem and seed with respect of major quality parameter. The oil extraction and oil qualities analysis were carried out in animal nutrition and biotechnology laboratory respectively. The major parameter ...
Abstract Weight loss and Density Functional Theory (DFT) methods were used to study the corrosion inhibition of 5-methyl-2H-imidazol-4-carboxaldehyde and 1H-Indole-3-carboxaldehyde on mild steel in acid medium. The values of thermodynamic parameters such as free energy of adsorption (ΔGºads), adsorption equilibrium constant (Kads), adsorption entropy (ΔSºads), adsorption enthalpy (ΔHºads) and activation energy (Ea) were calculated and discussed. The adsorption process on mild steel surf...
Watermelons belong to the family cucurbitaceous, they are fruits like cantaloupe, pumpkin and similar to plants that grow on vines on the ground. There are over 1,200 varieties of watermelons in the world, several of these varieties have been recommended for Kenya range of climate, however only three varieties are commercially grown in Kenya namely; the Charleston Grey (Sugar F1), Crimson sweet (Zebra) and Sugar baby. Watermelon has four distinct parts; the seeds, the pink flesh, the white fl...
ABSTRACT Gravity survey was used to detect metallic bearing rocks and dense bodies of rocks within host formations in Mbeu area of Tigania. From the study, there is a clear indication of the presence of iron ore in the region. The ground based gravimeter was used to precisely measure variation in the gravity fields at different points. A total of 86 gravity stations were surveyed. The data obtained was corrected for drift, latitude, Free Air and Bouguer corrections from where the Free Ai...
ABSTRACT The molecular modification of purely organic drugs by the incorporation of a metal atom is an active area of research. However, there is paucity of data in the use of half sandwich organometallic fragments and in particular the cationic iron half sandwich, [ɳ5-C5H5(CO)2Fe]+, in structural modification of drug molecules. The cationic iron half sandwich organometallic fragment provides a metal centre that could participate in biochemical reactions with potentially the desirable benefi...
ABSTRACT Tick-borne infections of livestock are wide-spread in Africa and present a great constraint to livestock development, particularly in the improvement of local breeds. This problem is compounded by the high susceptibility of foreign breeds of livestock being used to improve livestock productivity in many African countries. Brown Ear tick, Rhipicephalus appendiculatus, is the most economically important of the 40-70 African tick species. This is due to the fact that it is a highly eff...
ABSTRACT Clean water is an essential commodity for a healthy nation. A fifth of all water used in the world is obtained from groundwater. In arid and semi-arid areas, groundwater is the main source of water for domestic and irrigation purposes. The semi-arid climate, few perennial water bodies and growing population in Mbeere South, Embu County has resulted into increased use of groundwater for both domestic and irrigation necessities. This has put pressure on these water sources leading...
ABSTRACT In African tropical zones, cereals are kept as grains or flour in storage structures and constitute important source of income for farmers. Protecting stored product in this case is an emergency to ensure food security for people living in these areas of deficiency where agriculture is not highly productive. Some of the pursued measures include physical, traditional, and biological methods; and application of synthetic pesticides. The above techniques have some problems including con...
ABSTRACT The study of excitation of helium atom by positron impact has drawn considerable attention since the prediction of existence of the positron by Dirac in 1928.This is due to the fact that the study of atomic collisions forms the basis for understanding of many scientific phenomena in the planetary atmosphere and Astrophysical science. In this study the excitation of helium atom to the is state by positron impact using the Distorted Wave formula has been done. Previously, studies have...
ABSTRACT The study focused on the possible oxidation of various nitrogen bases by molybdenum(II) and tungsten(II) halocarbonyls, formation of zerovalent aminecarbonyl metal complexes and mode of coordination of nicotine to molybdenum and tungsten. Aminecarbonyls of the type M(CO)3L3 (M=Mo, W; L= CH3NH2, CH3CH2)2NH), M(CO)4TMEDA and M(CO)5nicotine were prepared by a reaction of the halocarbonyls [M(CO)4X2]2 (M=Mo, W; X=Br or Cl) with selected nitrogen bases. The crystal structurse of Mo(CO)4TM...
ABSTRACT Chlorine in drinking water, surface or underground water is a concern of public health. This is because chlorine reacts with nitrogen containing organic compounds to form polychlorinated complexes that are carcinogenic. However, chlorine is dissolved in water for the sake of disinfecting with a view to killing pathogens in water to make it safe for human consumption. After that initial addition, some chlorine is left in the water and continues with the chlorination process of the org...
ABSTRACT Dark green leafy vegetables (DGLV) such as Amaranthus spp are known to be good sources of beta-carotene, a pro-vitamin A carotenoid and a highly potent anti-oxidant. Anti-oxidants terminate chain reactions, prevent recurrence and also prevent the formation of unstable oxygen which otherwise can initiates a chain reaction that propagates to cancerous cell. Cancer is strongly attributed to poor diet as well as lack of exercise. New cancer cases are diagnosed daily, leading to a project...
ABSTRACT This study reports a new method of pre-concentrating Zn2+, Fe2+, Mn2+, Mo6+ and I- ions present in food stuffs using modified bio-sorbents. These elements are in low levels in many food stuffs commonly consumed and some are way below the recommended daily intake (RDI). Examples of mitigating such situations include the addition of iodine to table salt in minute portions. However, table salt in foods increases sodium levels causing problems to consumers with high blood pressure...