Postgraduate Project Topics, Thesis and Dissertation
6761. Extraction Of Natural Dyes From Locally Grown Plants In Ethiopia And Dyeing Of Cotton Fabrics
Natural dyes were the only colourants used for colouring of textiles beginning from ancient times to nineteenth century. Using of natural dyes are safe for human’s health and environmentally friend even though they have drawbacks such as not easily available in the market, needs complex...
6762. Extraction Characterization And Optimization Of Cellulose Nanocrystals From Corncob
In this study cellulose nanocrystals were extracted from corncob by the method of sulfuric acid hydrolysis, followed by separation using centrifugation, dialysis, and ultrasonication with the objective of achieving maximum yield. The maximum yield (41.8%) of cellulose nanocrystal was found at the...
6763. Modeling And Simulation Of Reactive Distillation For Biodiesel Production
In this thesis, theoretical investigations have been made concerning reactive distillationrncolumns. The detailed steady state modeling, and simulation are made for biodieselrnproduced by reactive distillation. This study was performed through several steps in orderrnto construct and develop an...
6764. Preparation Of Solid Acid Catalyst From Rice Husk And Investigation Of Its Catalytic Performance In Esterification
The fundamental reaction in organic synthesis is esterification of carboxylic acid and alcohol which can produce high value of material in the areas of cosmetics, plastics, food, medicines, intermediates, etc. Furthermore, this reaction is used in the pretreatment step for biodiesel production from...
6765. Active Power Flow Control In Ethiopian High Voltage Transmission Networks Using Phase Shifting Transformer To Enhance Utilization Of Transmission Lines
The electricity supply industry of Ethiopia is undergoing a major transformation that requires arnredefined approach to increase the utilization of existing transmission line assets. Overloading ofrntransmission lines in a power system sometimes result stability issues, which may lead tornunwanted...
6766. Fault Location Estimator Design For Power Distribution System Using Artificial Neural Networks
Fault location in distribution system is critical issue to increase the availability of power supply by reducing the time of interruption for maintenance in electric utility companies. In this thesis fault location estimator for power distribution system using artificial neural network is developed...
6767. A Study On Blackout Problems Of Ethiopian National Grid And Its Mitigation Techniques Using Adaptive Under Frequency Load Shedding Scheme
An interconnected electric power system must balance load and generation in order to maintain frequency within acceptable range. The balance between generation and load within an interconnected electric power grid is expressed in the frequency of the system. Under frequency protection schemes are...
6768. Stress Analysis Of A Composite Material Shell Having A Crack
Composite materials are artificially made materials used in various mechanical applications likernshells and plates. A composite material cylindrical shell is one of the components used in weightrnsensitive areas like aeronautics and marine environments. In these applications, the weight of...
6769. Analysis Of Wheelrail Contact Geometry And Applied Load Conditions On The Rail Head Surface
Now a day the railway transport infrastructure in Ethiopia is the major issues in relation to the development of the country. To strengthen this infrastructure, related researches must be conducted at the beginning of the construction of the sector. This paper which mainly concerned about the...
6770. Impact Of Land Useland Cover Change On The Stream Flow (case Study Of Megech River Watershed Abay River Basin Ethiopia)
Trnhe main goal of this study is to identify the impact of land use/ land cover changes on thernhydrology of Megech Watershed S pecifically, the study was analyzed the histor ical landrncover changes at (2000, 2010 and 20018 years) that have occurred in the ca tchment and itsrnimpact on stream flow...
6771. Designing Low-cost Radio Frequency Based In-patient Monitoring System For Low Resource Settings
Patients in critical condition are not well attended due to lack of adequate number of medical professionals and insufficient number of patient monitor machine in recovery room. This needs a system which resolves gap and improve continuous patient’s follow-up. The objective of this thesis is...
6772. Identification Isolation And Characterization Of Suitable Lactic Acid Bacterial Strain For Minimizing Fermentation Time Of Kocho
Kocho is a traditional food prepared through fermentation of decorticated Enset in Southern Ethiopia. It has been produced for many years and is being consumed in the region. Various research findings were reported on Enset with major concerns such as food safety and security issues, microbial...
6773. Characterization And Optimization Of Bioinsecticide Extracted From Cigarette Waste To Control Cabbages Insect Pests
Chemical pesticides and fungicides have been in use since long period to protect the crops from insects and diseases. Plant extracts were likely the earliest agricultural bio-insecticides. Nicotine in the form of tobacco extracts was reported in 1690 as the first plant-derived insecticides. A huge...
6774. Thermal Analysis Design And Experimental Investigation Of Parabolic Trough Solar Collector
Injera baking is the most energy intensive process. The wide spread use of wood cutting for fuel is the primary cause of deforestation in Ethiopia. About 95% of the total energy consumption in Ethiopia mostly comes from biomass fuels. Historically Ethiopia was mostly covered with forest up to...
6775. Development Of Efficient Biogas Injera Baking Stove
Injera baking is the most energy intensive process. The wide spread use of wood cutting for fuel is the primary cause of deforestation in Ethiopia. About 95% of the total energy consumption in Ethiopia mostly comes from biomass fuels. Historically Ethiopia was mostly covered with forest up to...
6776. Performance Analysis Of Hybrid Photovoltaic Thermal And Heat Pump System Using Computational Model
Renewable energy resources such as solar energy have great potential in meeting electrical and thermal energy demand in off-grid areas of developing countries. Working on this breakthrough and well-tried sector changing the lives of millions of people living in off-grid areas. In recent decades,...
6777. Design And Development And Performance Evaluation Of Thermoelectric Stove Using Cfd
Thermoelectric stove is kind of improved cooking stove, can able to reduce the wastage of energy, reduce fuel consumption. Thermoelectric stoves able to convert partially wasted energy in to useful electrical energy in stove. They are designed and developed to harvest energy for home-made...
6778. Study On Contractual Relationship Between Main Contractors And Subcontractors And Their Impacts On Main Contractors Competitiveness In 2080 Bole Arabsa Condominiums
This study presents the current nature of main contractor and subcontractor contractual relationship and subcontractors impact on main contractors‟ compitatvness in Addis Ababa 20/80 condominium projects. The objective of this research is to identify the main criteria used by main contractors...
6779. Determining Optimum Cost Contingency For Road Construction Project Using Monte Carlo Simulation A Case Of Access Road For Housing Projects
Road construction project is subjected to many substantial risks which affect the project cost and time. Most of the contractors and owners of such projects handle such risks by having a reserve budget which will be used for the instance called contingency. The practices of most of the project...
6780. Causality Rationality And Mysticism An Inquiry Into Ghazalis Theory Of Knowledge.
Philosophers have largely and unceasingly disputed the epistemological place of rationality and the relationship between observational causes and effects. The purpose of this study is to examine the epistemological relationality between Ghazali’s critique of the necessitarian notion of...
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