Article in Press
This study determined the effect of cylinder speed, feed rate and tray angle on the dehulling efficiency and the effect of fan speed, feed rate and tray angle on the cleaning efficiency and grain loss from an acha (Digitaria exilis) dehulling machine in a 3 x 3 factorial experimental design in three replicates. The cylinder speeds were 1500, 2000 and 2500 rpm and the fan speeds were 160, 185 and 213 rpm. The feed rates...
Evaluation of the impact of partial shading on the performance of photovoltaic panels
Article in Press
This experimental work presents an investigation on the impact of partial shading of a photovoltaic solar cell on the performance of different types of PV solar panels. A monocrystalline panel and a polycrystalline panel are used for the experiments as well as three types of covering materials with different transmittance levels (white leaf, tree leaf and transparent paper). The shaded cell area varies by 20%, 50% and 100%...
Comparative Advantage of Tractor Utilization in Southeastern Oromia, Ethiopia
Article in Press
This study analyzes the effect of tractorization on cropping intensity, crop yields, and adoption of major agricultural inputs, on human labor employment, determine the utilization and per-unit cost of tractor power according to the farm size, compare the different costs and profits for Draught animal power and Tractor operated farms according to the farm size. Data was collected from the stratified sample of 345 farmers...
Optimization of Shea Butter & Aluminium Powder Blend for Solar Drying Thermal Storage Applications
Article in Press
This study was conducted to optimize shea butter and Aluminium powder blends by varying sample compositions in wt. (%). Solar energy drying system was designed using the meteorological conditions of Zaria, Nigeria to dry ginger slices in the mixed-mode natural convection. The optimization was achieved by blending shea butter with Aluminium powder at elevated mass fraction of (1 – 5) %wt. The composition with 3% wt of...
Article in Press
Water availability is becoming a critical issue in Ethiopia so that preferable irrigation technologies need to be developed and water productivity of irrigated crops through water management is a vital option in water shortage areas. Hence, the objective of the study was to improve potato tuber production through the application of different irrigation system and deficit irrigation application under highland climatic...
Design, Fabrication, and Performance Evaluation of a Multi-Crop Milk Extracting Machine.
Article in Press
Many small-scale processors produce vegetable milk to meet consumer needs. However, these processors are mostly limited in their production capacity because the unit operations employed are rudimentary, unmechanized, stressful, time-consuming, and prone to contamination. This paper reports the development of a multi-crop milk extractor. The performance of the extractor was evaluated using Soymilk and tiger nut milk. The...
Numerical calculation of the parameters of the vortex wind turbine.
Article in Press
The relevance of the work is to develop a new direction of wind turbines with a vertical axis of rotation without wind guidance mechanisms. The main goal of the study was to develop a mathematical model to describe a new design of a wind turbine, the distinctive feature of which is the use of the vortex effect. The tested structure consists of a flow concentrator, inside of which there is a wind wheel. A vertical pipe...
Fault tolerance in reversible logic circuits and quantum cost optimization
Article in Press
Energy dissipation has a prominent factor for the very large scale integrated circuit (VLSI). The reversible logic-based circuit was capable to compute the logic without energy dissipation. Accordingly, reversible circuits are an emerging domain of research based on the low value of energy dissipation. At nano-level design, the critical factor in the logic computing paradigm is the fault. The proposed methodology of fault...
A Features Fusion Approach for Automatic Pollen Recognition
Article in Press
In microscopy image analysis, images of pollen are particularly difficult to analyze automatically. The major reason of this difficulty emerges from the complex nature of the pollen, which presents great variability and similarities between classes and even on the same classThis paperpropose a feature selection methodology with dimensionality reduction for pollen image classification. First, we extracted five descriptors...
Article in Press
Due to changes in livestock sector and raise of consumer demand for comprehensive and integrated food security and safety, there has been a concern to use of farm data in enhancing animal traceability and decision making by farmers and other decision makers in livestock sector. To ensure high production through effective decision making and high standards that can be proven by audits, producers are required to have a...
Agricultural machinery performance and tractors servicability in Delta State, Nigeria
Article in Press
Agricultural machinery performance and tractor serviceability optimizes agricultural productivities in farm operations. A study was conducted in Delta State, Nigeria assessing level of machinery utilization in farm operations and serviceable conditions. Eight (8) government owned tractors locations with 60 tractors, and eight private owned farms with 29 tractors were studied. A structured questionnaire, primary and...
ASSESSMENT OF THE EFFECT OF POOR DRAINAGE SYSTEM ON ROAD PERFORMANCE: A CASE STUDY IN DIRE DAWA TOWN
Article in Press
Proper design, construction, and maintenance of road drainage structures are very essential especially for the urban drainage system because of it’s the adverse effect both on the road and the community in case flooding happen. The drainage system of the towns in Ethiopian commonly uses rational method for the estimation of design discharge which directly depends on rainfall intensity, runoff coefficients and catchment...
Hybrid Technique For The Waste Water Treatment Using Bio Waste of Tea Plant
Article in Press
The effect of physical, mechanical and multi – step chemical treatments on the adsorptivity of waste of tea (WOT) adsorbent for the removal of 3 multi – heavy metal component from simulated wastewater was evaluated in this study. There are new techniques of (WOT) adsorbents prepared for the adsorption studies, namely physical treatment of (WOT), mechanical treatment of Blended (WOT) and chemical treatment of (WOT)...
Article in Press
The demand for pure ethanol has become paramount for its various applications in biofuels and preparation of industrial chemicals, food and pharmaceutical products. Pressure Swing Adsorption (PSA) has proven to be an effective process and a more economical method for separating the azeotropic concentration of ethanol-water (95% ethanol, 5% water) than distillation. The modeling of PSA of ethanol-water azeotropic...
Article in Press
Notebooks in research are an important part in tracking information of both wet and dry analytical data. Paper books or excel sheets remain the most popular and conventional ways of record keeping. To meet these demands, an open source electronic laboratory notebook is developed that can track users research need. Based on the user specifications, this suite is written in Hypertext Pre-processor (PHP) and based on a MySQL...
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