Performance evaluation of a four-wheel Sonalika tractor with a variable load of disc plows
Article in Press
The general objective of this study was to investigate the performance of the tractor with different implements with variable loads and speeds. The soil texture was found to be clay loam. The result shows that; the highest fuel consumption was at engine speed 2000 rpm which was 9.55 liter per hour. This was followed by 1500 rpm (7.67 L/hr.) and 1000 rpm (6.98 L/hr.). And also for all loads range and gear levels fuel...
Article in Press
Crop production in semi-arid dry land areas of Ethiopia is totally dependent on erratic rainfall-uneven in distribution, torrential in intensity, low in amount during crop growing season and variable from year to year. This result unpredictable agricultural production and occasional crop failure. Therefore, the study was designed to evaluate the effect of in-situ moisture conservation techniques such as tied ridge and...
Extraction and characterization of oil from ogbono (irvingia gabonesis) seed using soxlet process
Article in Press
The study investigated the extraction and characterization of oil from Irvingia gabonensis (ogbono) seed using soxhlet extraction process. In the study n-hexane was used as the extracting solvent. The result shows that 79% of oil was obtained from the seeds which is very high enough. The oil contain 5.045% moisture, 79% crude fat, 17.64% crude protein, 6.0% ash and 19% carbohydrate which makes it a rich source of edible...
Article in Press
Developing nations are also battling with global warming. Therefore, optimizing industrial energy is a must and the de-carbonization in a cement production in the developing countries should be courage. This research work seek ways of optimizing energy recovery and exergy recovery of a cement clinker cooler. This will not only improved plant performance but also reduces cost of cement production. Nigeria (Developing...
A Review on Transistor Self-Heating models, effects, and its prevention methods
Article in Press
Transistor self-heating has become a critical concern in the design and operation of modern electronic devices. This review aims to provide a comprehensive overview of transistor self-heating models, the effects it has on device performance, and the methods employed to prevent or mitigate their adverse impacts. Various self- heating models are discussed, including analytical, numerical, and compact models. Models aim to...
Article in Press
The study of Rhecktophyllum Camerunense (RC) fibers as reinforcement of polymer matrix began in 2008 and has already demonstrated their ability to replace the glass fibers. In this paper, the influence of humidity on the mechanical behavior of plant fiber is studied and a multiscale model is proposed. The moisture absorption of RC fibers is studied through a multi concentric cylinder model developed based on the work of...
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...
Page 1 of 1, showing 19 records out of 19 total, starting on record 1, ending on 19
