In this research, leaf samples of Tena Adam were randomly collected from four selected areas around Addis Ababa. After proper sample pretreatment, the volumes of reagents used, digestion temperature and digestion time were optimized and using the optimized conditions the levels of metals were...
Energy is critical input for different purposes. Present study deals with characterizing the energy of Tercha coal and its use. In countries, like Ethiopia, which imports almost all of their energy source, hydrocarbon, further analysis of known deposits and investigation of new area, like this,...
In this work, we investigate quasi Newton methods for solving unconstrained optimizationrnproblems. We consider two di erent quasi-Newton update formulas, namely, Broyden-rnFletcher-Goldfarb and shanno (BFGS) update and Davidon-Fletcher-powell (DFP) up-rndate. Line search method is used to nd the...
An integrated geophysical investigation was carried out at a site nearby Addis Ababa Science and Technology University, Kilinto, Akaki, just in front of the Tulu-Dimtu condominiums, Southeastern Addis Ababa, Ethiopia. The principal objective of this research is to map the subsurface geology and...
Remote Sensing has a great importance for vegetation cover change analysis specifically deforestation and its impacts on climatic parameters, biodiversity, fertility of soil and land productivity. However, there is a gap on quantifying and analyzing the impact of change in vegetation cover on the...