January 2020

Management of world energy resources (Renewable energy): Choices for the future?

Energy enables technical innovations, and progress in health, agriculture and transportation. Socio-economic development and energy production are linked, although some energy-rich countries are poor. Developed countries are the biggest consumers. Energy consumption increases with increase in world population. Fossil energies are dominantly consumed. Nuclear energies are often decried because of serious accidents....

Author(s): Gueye Moustapha

January 2020

Agro-ecological assessment of physico-chemical properties of soils in Kulfo Watershed, South Western Ethiopia

Variation in physical landscape of the highlands gives rise to variations in agro-climatic and soil parent materials in Ethiopia. The aim of this research is to characterize the physio-chemical properties of soils in Kulfo watershed. For the study, primary data from transect walks, composite soil samples and GPS points and secondary data from satellite imaginaries, National Metrological Agency and Central Statistical...

Author(s): Teshome Yirgu, Yibeltal Yihunie and Alemu Asele  

January 2020

Design and construction of fixed dome digester for biogas production using cow dung and water hyacinth

Engineered biological systems used for resource recovery often utilize anaerobic digestion to treat organic wastes by reclaiming the carbon as energy (methane gas) and a soil amendment (biosolids). This study explored the production of biogas from co-digestion of cow dung waste and water hyacinth (Eichhornia crassipes) using anaerobic biological conversion. Cow dung and water hyacinth biomass feedstock were collected...

Author(s): Ajieh Mike Uche, Ogbomida Temiotan Emmanuel, Onochie Uche Paul, Akingba Olawale, Kubeyinje Bawo Frank, Orerome Owomwan Rita and Ogbonmwan Sunday Martin  

January 2020

Evaluation of stream flow under land use land cover change: A case study of Chemoga Catchment, Abay Basin, Ethiopia

For human beings, land and water are vital. To enhance agricultural productivity and socio-economic development in the agricultural catchment, irrigation development is an important issue. The present study aims to evaluate the stream flow under land use land cover (LULC) change for surface irrigation in Chemoga catchment part of Abay River Basin. To accomplish the objectives of this study, the watershed model SWAT...

Author(s): Anmut Enawgaw Kassie, Tesfu Abebe Tesema and Negash Wagesho Amencho