This research focuses on the extraction of beta-carotene from palm and soybean oils using solvents (Ethanol and Acetone), taking into account the effect of the extraction process factors such as time, temperature, dosage of the oil samples, solvent volume and solvent type. The ex...
Open access
Research Article10.9734/jerr/2019/v8i216984
Maize (Zea Mays L.) is one of the most important food crops worldwide. In Ethiopia, it is one of the leading food grains selected to assume a national commodity crop to support the food self-sufficiency program of the country. Maize is fairly sensitive to water stress and excessi...
Open access
Research Article10.9734/jerr/2019/v8i116983
The fiber optic communication system can transmit data a rate of 10 GB/S or more, over a maximum possible distance with less attenuation. In this research a low loss optical fiber has been simulated. The simulation is done by MATLAB Software. This research deals with different lo...
Open access
Research Article10.9734/jerr/2019/v8i116982
In many countries manpower problems in the field of health care are regular items on the agenda of policy makers. To avoid mismatches between demand of care and supply of care on national and regional levels, manpower planning models and methods are used to determine adequate num...
Open access
Research Article10.9734/jerr/2019/v8i116981
Cement bonded boards of 6 mm in thickness were produced from the mixture of Ceiba pentandra and Gmelina arborea sawdust. The influence of weight to weight proportion of C. pentandra and G. arborea blended at levels of 100:0, 75:25, 50:50, 25:75 and 0:100 in mass and mixing ratios...
Open access
Research Article10.9734/jerr/2019/v8i116980
Rigid diaphragm is generally an acceptable option in most of the seismic design codes in which the in-plane deformability is not permitted because of the infinite in-plane stiffness properties. Several building configurations may exhibit significant flexibility in floor diaphrag...
Open access
Research Article10.9734/jerr/2019/v8i116979
Biological treatment in wastewater treatment plants WWTPs consists of two main tanks, aeration tank and final settling tank. Aeration process using in return activated sludge system is very costly and it is required to operate WWTPs with low dissolved oxygen (DO) concentration in...
Open access
Research Article10.9734/jerr/2019/v7i416978
Different types of voltage sources are available in the market, but the point is how to convert any voltage to our desired waveform? For example; if we have a DC voltage source (like battery or dc generator) and we need to run AC motor (one phase or three phases) or run DC motor...
Open access
Research Article10.9734/jerr/2019/v7i416977
A nonlinear numerical procedure in joint with suitable constitutive concrete and steel models is proposed to simulate the structural behavior and progressive collapse potential of ordinary moment-resisting frames exposed to a middle column removal scenario. Previous experimental...
Open access
Research Article10.9734/jerr/2019/v7i416975
Waste generation at Nigerian slaughterhouses poses a serious threat to the environment because of poor handling practices which results into adverse impact on land, air and water. The aim of this research is studying the dynamics of solid removal in waste stabilization pond at di...
Open access
Research Article10.9734/jerr/2019/v7i416976