Adama University

About: Adama University is a education organization based out in Nazrēt, Ethiopia. It is known for research contribution in the topics: Population & Adsorption. The organization has 840 authors who have published 1010 publications receiving 5547 citations. The organization is also known as: Adama Science and Technology University & ቴክኖሎጂ ዩኒቨርሲቲ, አዳማ ሳይንስና ቴክኖሎጂ ዩኒቨርሲቲ.

Intestinal Helminthic Infection in Numan (Northeast Nigeria)

Abstract: Intestinal helminthes are the most common diseases in Sub-Saharan Africa with a very higher negative public health and socio-economic impacts. Mass drug administration is one programme aimed at controlling the disease. The exercise has not been successful in Nigeria due to low levels of living standards, poor environmental sanitation, and ignorance of simple health-promoting behaviours. Due to negative impacts of helmithiasis, there is therefore the need for good preventive and control measures. This can not be done effectively without a baseline data on the occurrence of helminthiasis in a particular area. A study of prevalence of intestinal helminthes infections among inhabitants of five villages in Numan local Government area Adamawa, Nigeria was carried out using formal-ether concentration method. Out of the 296 subjects examined, 27(9.1%) were found to be infected with at least one helminth. The prevalence of intestinal helminthes found were Taenia spp (3.7%), Hookworm (3.4%), and Ascaris lumbricoides (2.0%). There was no significant association between helminthic infection and sex (P>0.05). There was no significant association between prevalence and age (P>0.05). Teania spp had the highest prevalence among subjects examined. Prevalence and co- infection was highest in Salti village. Intestinal helminthes are of public health importance in the area, and control measures are imperative.

Co-inoculation effect of Mesorhizobium ciceri and Pseudomonas fluorescens on physiological and biochemical responses of Kabuli chickpea (Cicer arietinum L.) during drought stress

Abstract: Chickpea (Cicer arietinum L.) is an important legume plant which is being affected by drought stress. Due to drought, chickpea production has been low in Ethiopia and other chickpea producing countries. Hence, the aim of this study was to reduce the impact of drought on chickpea plant by taking advantage of consortium effect of Mesorhizobium ciceri CP41 and Pseudomonas fluorescens Biotype G. Two chickpea varieties, Habru (drought tolerant) and Arerti (drought susceptible) were used to study the effect of the two bacterial consortia in moderating the effects of drought stress on some morphological, physiological and biochemical traits. The results showed that co-inoculation had significantly improved fresh and dry weight of leaves, root and shoot (p < 0.05) under stress condition. However, non-significant difference was noted on nodules number per plant between co-inoculated and Mesorhizobium spp. alone inoculated. Relative water content, proline, total soluble sugar, total chlorophyll and carotenoid contents were significantly affected in both drought tolerant and susceptible varieties. The present study demonstrated that consortia application had a potential to confer drought tolerance in chickpea by altering various growth, physiological and biochemical parameters under drought stress condition.

Uniformly Convergent Numerical Scheme for Singularly Perturbed Parabolic PDEs with Shift Parameters

Abstract: In this article, singularly perturbed parabolic differential difference equations are considered. The solution of the equations exhibits a boundary layer on the right side of the spatial domain. The terms containing the advance and delay parameters are approximated using Taylor series approximation. The resulting singularly perturbed parabolic PDEs are solved using the Crank–Nicolson method in the temporal discretization and nonstandard finite difference method in the spatial discretization. The existence of a unique discrete solution is guaranteed using the discrete maximum principle. The uniform stability of the scheme is investigated using solution bound. The uniform convergence of the scheme is discussed and proved. The scheme converges uniformly with the order of convergence , where is number of subintervals in spatial discretization and is mesh length in temporal discretization. Two test numerical examples are considered to validate the theoretical findings of the scheme.

Parametric Analysis of Epoxy/Crumb Rubber Composite by Using Taguchi-GRA Hybrid Technique.

Abstract: Effect of parameters affecting solid particle erosion of crumb rubber epoxy composite is investigated. Five important process parameters—impact velocity, impingement angle, standoff distance, erodent size, and crumb rubber content—are taken into consideration. Erosion rate and erosion efficiency are included as the chief objectives. The Taguchi coupled gray relational analysis type statistical model is implemented to study interaction, parameters’ effect on responses, and optimized parameters. ANOVA and regression model affirmed impingement angle and crumb rubber content play a significant role to minimize the erosion. Validity of the proposed model is justified with the standard probability plot and R2 value. A confirmation experiment conducted with A2B2C3D3E3 condition registers noticeable enhancement in GRG to the tune of 0.0893.

Formability Analyses on Single Point Incremental Sheet Forming Process on Aluminum 1050

Abstract: In recent years, there is a lot of demand on metal forming processes in which sheet metal forming process has lots of applications in the automotive and aerospace industries. In sheet metal forming operations, incremental forming is an emerging technology in which, single point incremental forming (SPIF) process is die-less in incremental forming process and providing a competitive alternative to economical and effective in fabricating low volume products. The objective of this work is to analyze the forming analysis on truncated pyramid product by avoiding cracking and maintaining the optimum forming conditions. The formability is analyzed by using ABAQUS software and simulation, different process parameters were varied such as sheet thickness, tool diameter, step depth, spindle rotational speed on aluminum AA1050 alloy. From the simulation results, stress stain and stain distribution were evaluated on the deformed sheet. The product produced is truncated pyramid dimension having square base of side and fillet at corner.