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Browsing Environmental Physics Stream by Issue Date

Now showing items 1-20 of 46

Solid State Physics Solid State Devices and Electronics

Kachhava, C.M. (International (P} Lid.,, 2003)
NOISE IMPACT ASSESSMENT OF ADAMA I WIND FARM

muktar, Asnakech; amente, Gelena Major Advisor (PhD); abebe, Getachew Co Advisor (PhD) (Haramaya university, 2016-08)

The study was conducted to determine sound created from wind turbine under a variety of wind conditions at a variety of distances from the wind turbine base. The initial energy in the sound was distributed over a larger ...
DESIGNING AND TESTING THE EFFICIENCY OF BOX TYPE SOLAR COOKERS MADE FROM WOOD, ALUMINUM FOIL AND TRANSPARENT GLASS

seyoum, Sadinku; amente, Gelena Major Advisor (PhD) (Haramaya university, 2016-08)

Three box type solar cookers were designed and prepared from locally available materials. Performance evaluations of the three box-type solar cookers were made by boiling water, heating sand and by measuring temperature ...
INVESTIGATING THE TEMPERATURE GRADIENT OF SOLAR POND AT ARSI SIRE

regasa jima, Hailu; amente, Gelena Major Advisor (PhD) (Haramaya university, 2016-10)

This study was carried out to determine temperature gradient of solar ponds constructed from sand, stone, cement and gravel during the Autumn season (November) in Arsi Sire, Oromia region (at an altitude of 1793 m.a.s.l. ...
ASSESSMENT OF RADIATION CONCENTRATIONS IN METALLIC ITEMS AT HU, HARAR AND DIRE-DAWA TOWNS

deneke habte, Desta; amente, Gelena Major Advisor (PhD) (Haramaya university, 2016-10)

In this thesis, assessment of net radiation dose level of different metal types from Harar, DireDawa towns and Haramaya University were made using EPD and Survey meter. From different construction metal types and kitchen ...
PRINCIPAL FACTORS FOR STUDENTS’ LOW PERFORMANCE IN PHYSICS WITH A SPECIAL EMPHASIS GIVEN TO CURRICULUM IMPLIMENTATION: THE CASE OF GRADE 9 STUDENTS AT JIJIGA SENIOR SECONDARY SCHOOLS.

tadesse, Nigatu; goro, Girma Major Advisor (PhD); abebe, Getachew Co Advisor (PhD) (Haramaya university, 2016-12)

The purpose of this study was to investigate the principal factors for students’ low performance in physics with a special emphasis given to curriculum implementation: the case of grade 9 students at Jijiga secondary and ...
ASSESSMENT OF PHYSICAL QUALITY OF DRINKING WATER AT GUDURU DISTRICT,WESTERN ETHIOPIA.

geleta likassa, Workina; kitila, Getahun Major Advisor (PhD) (Haramaya university, 2017-01)

A number of factors like geology, soil, effluents, sewage disposal and other environmental conditions in which the water stays or moves and interacts are among the factors that affect the quality of water. The sample of ...
PHYSICAL CHARACTERIZATIONS OF PRE AND POST TREATMENT SYSTEMS OF WASTEWATER: THE CASE OF HAWASSA SOFT DRINKS INDUSTRY, ETHIOPIA

abebe chere, Amdebrihan; abebe, Getachew Major Advisor (PhD); Belay, Abebe Co Advisor (PhD) (Haramaya university, 2017-02)

The quality of water is a function of either or both natural and anthropogenic activities. Wastewater usually contains various pollutants, depending on what it was used for. This study was conducted to assess the pre and ...
ESTIMATING GLOBAL SOLAR RADIATION IN BALE ROBE TOWN USING ANGSTROM-PRESCOTT AND HARGAREAVES-SAMANI MODELS.

ababu, Berhanu; belay, Abebe Major Advisor (PhD) (Haramaya university, 2017-02)

In this project, the daily sunshine duration and daily maximum and minimum temperature were used to estimate seasonal mean values of global solar radiation and their percentage difference between the two models in Bale ...
ASSESSMENT OF RADIATION CONCENTRATIONS IN HARAMAYA UNIVERSITY, HARAR AND DIRE DAWA

assen, Mohammed; amente, Gelena Major Advisor (PhD) (Haramaya university, 2017-02)

Assessment of radiation concentration in buildings was carried out at three locations, HU campus, Harar town and Dire Dawa town. The instruments used to collect data were Electronic personal dosimetery (EPD model type ...
IMPACTS OF WIND TURBINES ON LAND SURFACE TEMPERATURE OF ADAMA CITY

hussein, Jeilan; amente, Gelena Major Advisor (PhD) (Haramaya university, 2017-02)

In recent years, wind turbines have become an acceptable alternative for electrical energy generation to fossil fuels or nuclear power plants, because of its environmental and economic benefits. The rotation of Wind ...
ASSESSMENT OF PHYSICAL QUALITY OF DRINKING WATER OF BEDELE TOWN, SOUTH WESTERN ETHIOPIA

darge, Siyum; kitila, Getahun Major Advisor (PhD) (Haramaya university, 2017-02)

This study was conducted at Bedele town to assess the physical quality of drinking water. The sample of water was collected from existing water supply of the town (River, Canal, Reservoir, pipe 1, and pipe 2). The objective ...
ASSESSMENT OF PHYSICAL QUALITY OF WASTEWATER AND ITS REUSE FOR IRRIGATION: CASE OF ASSELA MALT FACTORY, EAST ARSI, OROMIA REGION, ETHIOPIA

getachew, Firew; kitila, Getahun Major Advisor (PhD) (Haramaya university, 2017-03)

This study was conducted at Assela Malt Factory to assess the physical quality of wastewater. The sample of wastewater was collected from Assela malt factory (steeping box, germination box and treatment tank). The objective ...
WET COFFEE PROCESSING EFFLUENT QUALITY AND ITS ENVIRONMENTAL INFLUENCE ON RIVER WATER: THE CASE OF KACHA BIRA AREA, SNNPR, ETHIOPIA

tefera dinkeneh, Dawit; Woldemichael, Abraham Major Advisor (PhD); teju, Endale Co Advisor (PhD) (Haramaya university, 2017-04)

This study was conducted at Kacha Bira district, SNNPR to assess the levels of physical water quality parameters of rivers water before and after receiving coffee wastewater, and coffee effluent discharged from wet coffee ...
MOTOR VEHICLES POLLUTION IN HARAR TOWN, EASTERN ETHIOPIA

mohammed, Ahmed; kitila, Getahun Major Advisor (PhD) (Haramaya university, 2017-05)

Motor vehicles pollutants are the main sources of traffic pollution which causes adverse health effect on people. These problems are likely to be particularly acute in the rapidly growing cities of the developing world ...
COMPARING THE PERFORMANCE OF VARIOUS SPECKLE REDUCTION FILTERS ON ULTRASOUND KIDNEY STONE IMAGES

shimeles, Ephrem; abebe, Getachew Major Advisor (PhD); Regasa, Ashenafi Co Advisor Dr (Haramaya university, 2017-12)

The major problem of ultrasound imaging technique is inheritance of Speckle noise. Speckle is a multiplicative noise that reduces both image contrast and detail resolution, degrades tissue texture, reduces the visibility ...
FEASIBILITY STUDY OF WIND ENERGY POTENTIAL IN CHICHO VI LLAGE

mohammed, Nuru; belay, Abebe Major Advisor (PhD); mengesha, Elias Co Advisor (PhD) (Haramaya university, 2018-02)

The rising concerns over global warming, environmental pollution, and energy security have increased interest in developing renewable and environmentally friendly energy resources such as wind, solar, hydropower, geothermal, ...
INVESTIGATION OF MODELS FOR DETERMINATION OF SUGAR GRAIN SIZE PARAMETERS

mathewos melako, Mesele; abebe, Getachew Major Advisor (PhD); demie, Seleshi Co Advisor (PhD) (Haramaya university, 2018-04)

Determination of sugar grain size parameters has a great significance in quality control monitoring of sugar grain size distributions. It is usually performed using sieve analysis method. In this research work, investigation ...
EVALUATION AND CLASSIFICATION OF MATURITY OF FRESH TOMATO FRUITS USING COLOR-BASED IMAGE ANALYSIS TECHNIQUES

olana, Fereja; abebe, Getachew Major Advisor (PhD) (Haramaya university, 2018-06)

In this study, a simple machine vision system was developed for sorting three maturity classes of tomatoes grown in Ethiopia. For the sorting analysis, RGB color features were extracted from each class of tomato images. ...
ASSESSMENT OF NET RADIATION LEVELS INSIDE RURAL HOUSESOF WOLAYTA, SIDAMA AND SILTE ZONES OF SOUTHERN ETHIOPIA

seta, Seifu; amente, Gelena Major Advisor (PhD) (Haramaya university, 2018-08)

This study aimed at to assess netradiation levels in side rural houses of Wolayta,Sidama and Silte zones of Southern Ethiopia.The field experiment was conducted in 12 peasant houses in three locations anddata for radon-222 ...

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