• EXPLORING MICROPHYSICAL AND OPTICAL PROPERTIES OF AEROSOLS, AND ESTIMATING AEROSOL OPTICAL DEPTH USING METEOROLOGICAL PARAMETERS USING MULTI- SPECTRAL SENSORS OVER DIRE DAWA, ETHIOPIA 

  Teshager Argaw Endale; (PhD) Getachew Abebe Argaw; (PhD) Bedada Wereka (Haramaya University, 2023-12)

  Aerosols influence climate by altering the global energy balance via scattering and absorbing solar radiation (direct effects), and by their effect on the reflectance of clouds and occurrence of precipitation (indirect ...
• COMPARISON AND EVALUATION OF THE MODIFIED OPTIMIZED TEMPERATURE BASED EVAPOTRANSPIRATION MODEL WITH HARGREAVES AND PRESLEY TAYLOR METHOD IN SELECTED METEOROLOGICAL STATIONS IN ETHIOPIA 

  Belaynesh Nigusu; Berhanu Mengistuchekol (Ph.d.) (Haramaya University, 2024-02)

  Because it produces 15% of the water vapour in the atmosphere, evapotranspiration is a crucial step in the water cycle. In order to allocate water effectively, manage irrigation, assess the effects of shifting land use ...
• EVALUATION OF QUANTITY OF SHREDDED PLASTIC BOTTLES ON THE STRENGTH OF BRICKS MADE OF VARIOUS MATERIALS 

  Tsegaye Desalegn; Berhanu Mengistu (Ph.D) (Haramaya University, 2024-02)

  Plastics are the most multipurpose man made materials in the world and are generally used as water bottles, medicine package, liquid container, roof cladding, etc. Plastic has disastrous impact on our environment because ...
• RAINFALL AND TEMPERATURE VARIABILITY CHANGE AND ITS LINK WITH NINO3.4 and SOI 

  ABDI MOHAMMED OMER; Birhanu Mengistu Chokel (Ph.D.); Haftu Brhane Gebremichael (Ph.D.) (Haramaya University, 2023-11)

  Climate variability is unstable, varying erratically on global, regional, and local scales. Knowledge of past climatic variability at local and regional sizes can aid in the development of adaption strategies. As a result, ...
• Solid State Physics Solid State Devices and Electronics 

  Kachhava, C.M. (International (P} Lid.,, 2003)
• THE IMPACT OF CLIMATE CHANGE ON THE SIZE OF LAKE LOGGO (HAYQ), ETHIOPIA 

  SEIFU FASIL; Gelana Amente (PhD, Professor); Haftu Brhane (PhD, Asst. Professor) (Haramaya University, 2023-01)

  In this study, the aim was to evaluate the contribution of rainfall and temperature variability and trend on Lake Loggo (Hayk) size/volume change, in Ethiopia using rainfall, temperature, and a map of the different ...
• DETERMINATION OF CLAY FRACTION AS BINDING AGENT IN BRIQUETTE PRODUCTION FROM WATER HYACINTH 

  Alemu Ersulo, Dereje; Amente, (PhD) Gelana (Haramaya University, 2022-05)

  Water hyacinth (Eichhornia crassipes), is among aggressive weeds that threatens water bodies wherever it appears. In Ethiopia this weed was first seen in Koka Lake over five decades ago, but its aggressiveness increased ...
• THE EFFECT OF SMOKE OUTLET CLOSING TIME ON THE COOKING DURATION AND TEMPERATURE OF COOKSTOVE 

  Degefu, Alemayehu; Amente, (PhD) Gelana (Haramaya University, 2022-04)

  Biomass cookstove is a device used to convert the energy contained in the fuel into heat through the combustion process. Cookstove smoke outlet cover is necessary to control over flow of air up the chimney and forces ...
• THE INFLUENCE OF LENGTH OF WINDBREAK ON LATERAL VARIATION OF WIND SPEED AT DIFFERENT DISTANCES ON DOWNWIND SIDE 

  Liranso Gendecho, Adinew (Haramaya University, 2022)

  his study was carried out to determine the influences of different windbreak lengths on the wind speed of the downwind side of windbreaks. The windbreaks and the wind speed sensors were constructed from locally available ...
• ESTIMATION OF WATER LOSSES BY TRANSPIRATION FROM ROOT AND LEAF CLIPPED WATER HYACINTH (EICHHORNIA CRASSIPES) 

  Teshome, Hana(MSc); Amente, Gelana (Ph.D.) (2021-09)

  Among several alien weeds Water Hyacinth (Eichhornia Crassipes)(known as Emboch in Ethiopia)is ranked as one of the world’s worst invasive weeds due to its ability to rapidly cover the entire water surface and cause ...
• ASSESSMENT OF NOISE POLLUTION LEVEL FROM VARIOUS SOURCES AND AT DIFFERENT LOCATIONS: THE CASE OF URBAN AREAS OF DIRE DAWA CITY ADMINISTRATION 

  Reta, Eyob(MSc); Amente, Gelana (PhD) (2021-07)

  Noise generally is known as unwanted sound, which can adversely impact the quality of life in urban areas across the globe. In Dire Dawa, which is one among the major industrial cities in Ethiopia, there are several ...
• COMPARISONOF SELECTED EVAPOTRANSPIRATION MODELS USING METEOROLOGICAL DATA TO IMPROVE THEIR PERFORMANCE FOR HYDROLOGICAL APPLICATIONS IN ETHIOPIA 

  Mengistu, Berhanu; Amente, Dr. Gelana (Haramaya university, 2020-06)

  Evapotranspiration is an important process in the water cycle because it is responsible for 15% of the atmosphere's water vapor. Accurate quantification of ET is crucial in water allocation, irrigation management, evaluating ...
• EFFECT OF POT THERMAL MASS ON THE COOKING TEMPERATURE AND TIME OF COOKSTOVE 

  Kemal Mussa, Aliye; Amente, (PhD) Gelana (Haramaya university, 2020-06)

  One of the major losses of heat from cooking stoves is through the gap between the inner edge of stove top and outer bottom of the pot, which is exposed to the surrounding air. In this study, design and construction of ...
• NATURAL RADIOACTIVITY MEASUREMENT IN SELECTED DOMINANT SOIL TYPES OF EASTERN HARARGHE, OROMIA, ETHIOPIA 

  Chekol Zerihun, Bamlak; Gelana Amente, (PhD) Gelana; Nigussie, (PhD) Biniyam (Haramaya university, 2020-08)

  Exposure to radiations beyond acceptable limits induces unintended and undesirable effects on human health. The dominant fraction of terrestrial radiation comes from soils and rocks. Soils are encountered on regular bases ...
• AUTOMATIC CLASSIFICATION OF MALARIA PARASITE INFECTED BLOOD SAMPLES BASED ON THEIR SPECIES AND DEVELOPMENTAL STAGES USING IMAGE PROCESSING 

  kefyalew, Yerosen; abebe, Getachew Major Advisor (PhD) (Haramaya university, 2019-11)

  Malaria is one of the deadly diseases in sub-Saharan countries including Ethiopia. It is caused by Plasmodium parasite transmitted by mosquito bites. An infected female anopheles mosquito is mainly responsible for the ...
• COMPARATIVE STUDY OF WOOD - BURNING STOVES OF DIFFERENT SKIRT HEIGHTS 

  sinko, Tsegaye; amente, Gelana Major Advisor (PhD) (Haramaya university, 2019-06)

  In Ethiopia a widespread degradation on the existing natural forest is causing an extensive demand for fuelwood. This study conducted a comparative analysis of between the fabrication skirt stoves with different skirts ...
• RELATIVISTIC DESCRIPTION OF PION COMPTON SCATTERING IN THE FRAMEWORK OF SCALAR QUANTUM ELECTRODYNAMICS 

  yohannes, Temesgen; mengesha, Elias Major Advisor (PhD); bekele, Gashaw Co-Advisor(PhD) (Haramaya university, 2019-03)

  In this thesis pion Compton scattering was studied in the frame of scalar quantum electrodynamics. Scattering matrices for electron Compton scattering was derived using Feynman rules of quantum Electrodynamics. Then this ...
• IMPACT OF PSYCHOLOGICAL SKILL TRAINING ON THE ENHANCEMENT OF AGILITY AND SPEED OF U-17 FEMALE FOOTBALL PROJECT TRAINEES AKAKI KALITI SUB CITY; ADDIS ABABA, ETHIOPIA 

  tafere gebru, Samrawit; ayalew, Abinet Major Advisor (PhD); mekonen, Shimelis Co-Advisor(PhD) (Haramaya university, 2019-06)

  The present study aims at investigating the effects of three months Psychological Skills Training (imagery) on speed and agility. The research design was employed for study is experimental design. For the purpose of the ...
• COMPARATIVE STUDY OF POT SKIRTS WITH DIFFERENT INSULATION THICKNESSES 

  chala, Meskela; amente, Gelana Major Advisor (PhD) (Haramaya university, 2019-03)

  One of the major losses of heat from cooking stoves is through the body of the pot, which is exposed to the surrounding air. Design and fabrication of pot skirts was undertaken in this work to minimize the heat losses. The ...
• ASSESSMENT OF THE STOVES WITH DIFFERENT NUMBER OF AIR INLETS 

  bunse, Kebede; amente, Gelana Major Advisor (PhD) (Haramaya university, 2019-03)

  The traditional three-stone fire is used in many households in rural areas of developing countries. These open fires are very inefficient at converting stored chemical energy into heat from biomass fuel needed each year ...

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