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Now showing items 2075-2094 of 2101

Water Balance of Upper Awash Basin Based on Satellite-Derived Data (Remote Sensing)

Kurkura, Mussa (Addis Ababa University, 2011-06)

Understanding the temporal and spatial variation of key water balance components of the Upper Awash Basin will provide important information for the management of its water resources. Surface Energy Balance System (SEBS) ...
Water Delivery Performance Evaluation of Koga Irrigation Scheme

Yeshi, Andualem (Addis Ababa University, 2018-11)

Water delivery performance is the degree to which whether the system delivers water at the required rate at the right place and time so, water delivery performance evaluation of irrigation system plays a dynamic ...
Water Quality Analysis and Pollution Prevention Options of Lake Ziway, Around Ziway City

Demeke, Fantaw (Addis Ababa University, 2018-12)

Water is a key factor for ecological balance and to support biodiversity. But it is getting polluted as a result of human interventions and natural phenomenon. Lake Ziway is one of the surface waters getting devastating ...
Water Quality Assessment Using Optimal Multiobjective Waste-Load Allocation Approach: The Case Of Little Akaki River

Mulugeta, Yilma (Addis Ababa University, 2019-04)

In Addis Ababa, indiscriminant waste disposal from domestic, industrial and commercial sources affect the water quality of the Little Akaki River. Moreover, this situation is limiting the usability of the River. Consequently, ...
Water Quality Modeling Of Water Supply Distribution System (The case of Alalbada-Erba Multi-Village Water Supply Scheme

Diro, Asfaw (Addis Ababa University, 2016-11)

Water distribution systems are designed to fulfill all requirements of potable water needed for intended purposes. Initial system designs frequently consider any anticipated changes likely to happen. However, as time ...
Water Quality Modeling of Water Supply Distribution System (The Case of Tuffa Bulbula Multi-Village Water Supply Scheme)

Dula, Birru (Addis Ababa University, 2014-12)

Water distribution systems are designed to fulfill all requirements of potable water needed for intended purposes. Initial system designs frequently consider any anticipated changes likely to happen. However, as time ...
Water Resource System Modeling of Eastern Nile River Basin

Gashaw, Asegdew (Addis Ababa University, 2015-06)

This study was conducted to quantify the likely impacts and benefits of current and future development options in the Blue Nile basin using simulation approach. Four cases studies were investigated under different ...
Water Supply Coverage and Water Loss in Distribution System with Modeling (The Case Study of Addis Ababa)

Kabeto, Shimeles (Addis Ababa University, 2011-11)

Leakage in water distribution pipes is a major problem faced by the water industry. Water utilities often employ traditional audit methods to estimate water lost as leakage. As a result demand for additional water sources ...
Water Treatment Plant Performance Evaluation Using Turbidity As A Parameter

Enkossa, Misganu (Addis Ababa University, 2016-07)

Gafarsa and Lagadadi Water treatment plants play a vital role in supplying drinking water to Addis Ababa City since about 55 years. The two WTPs are located on opposite direction of the city. Groundwater sources developed ...
Water Use and Operation Analysis of Water Resource Systems in Omo Gibe River Basin

Asefa, Daniel (Addis Ababa University, 2011-05)

In this study, HEC-ResSim (Hydrologic Engineering Center-Reservoir System Simulation) model was used to simulate water use and operation of existing, ongoing and planned hydraulic infrastructures, and irrigation schemes ...
Watershed modeling and uncertainty analysis on Gumara watershed

Abereham, Ashenafi (Addis Ababa University, 2013-02)

The objective of this thesis work is to model stream flow at the outlet of the gauged Gumara watershed and analyze the associated uncertainty that can affects the accuracy in estimation of the stream flow. Having good ...
Wear Analysis of Aluminum Matrix-Titanium dioxide Nano Composite Automotive Cam using FEM

Assegid, Rediet (Addis Ababa University, 2016-09)

The purpose of this project is to identify and compare wear and the weight loss of a light duty engine cam using Nano titanium dioxide reinforced aluminum composite cam with a cam of 4% Nano Silicon Carbide reinforced ...
Wear Analysis of Overhead Line Contact Wire Using Ansys Workbench Software

Firaol, Gelana (Addis Ababa University, 2015-05)

In this thesis, the main objective is analyzing the overhead line contact wire wear rate using ANSYS Workbench software. The wear is defined as the progressive loss of substances from the operating surface of a body occurring ...
Wear Analysis on Track Braking System using FEM

Kaltoun, Mohamed (Addis Ababa University, 2017-06)

Electromagnetic rail brake (also called magnetic track brake) is a kind of contact friction braking, basing on the track /rail adhesion. The main purpose of this study is to analyze the wear of the dry contact between ...
Wear Analysis on Wheel-Rail Contact in Rolling-Sliding Contact using FEM

Oubah, Ismail (Addis Ababa University, 2017-06)

Wheel and rail is one of the most important material used to support and guide rail vehicle safely and smoothly. Since wheel and rail suffers from various interacting mechanical and thermal forces, friction modifiers, ...
Wear Rate Analysis of Overhead Line Contact Wire by Considering Current Effect Using ANSYS.

Taha, Ahmed Abdourahman (2017-06)

The overhead line and pantograph is the two contacting bodies Wear on overhead line is one of the greatest problems in the railway industry. To overcome the problem of wear on overhead line different studies have been made. ...
Web-based Medical Equipment Management System in Seven Referral Hospitals

Abiyou, Semegnew (Addis Ababa University, 2018-06)

Medical devices are an integral part of healthcare service delivery and they are used for monitoring, diagnosis, treatment and rehabilitation of patients. Proper utilization of medical devices is important for ensuring ...
Weight Optimization of Front Coil Spring Suspension Using Composite Material for Bajaj by FEM

Medhanye, Berhane (AAU, 2018-06)

The main objective of this research is to minimize the weight of the helical coil spring of Bajaj without reducing the strain energy and keeping good the stiffness of the spring. This is done by comparing the existing ...
Weld Design of Heavy Duty Vehicle Bodies

Dinbassa, Samson (Addis Ababa University, 2007-11)

The welding process has been used extensively in the fabrication of many structures including ships, airplanes, buildings, bridges, vehicle bodies, pressure vessels, etc. It provides many advantages over other ...
Well Failure Assessment: The Case of Akaki Phase Iiib Well Field

Edris, Sofia (Addis Ababa, 2017-06)

The vast expansion of the city increase the shortage of water and Addis Ababa Water and Sewerage Authority has implemented the short term and medium term plane to overcome the deficit occurred in the city. The plans ...

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