• Phytochemial Investigations and Biological Activities of Smoke Samples Collected from Otostegia Integrifolia, Silene Macrosolen, and Echinops Kebericho Plants 

  Zewdu, Tadesse (Addis Ababa University, 2020-08-06)

  The essential oils and smoke collected from leaves of Otostegia integrifolia, S. macrosolen and E.kebericho were investigated using gas chromatography mass spectrometry (GC-MS). Several compounds were identified in the ...
• Synthesis and Characterization of Mn (Ii) and Zn (Ii) Complexes of Mixed Ligand 2, 2’-Bipyridine and Citric Acid 

  Taye, Melkamu (Addis Ababa University, 2020-07-04)

  Solvothermal synthesis of Zn (II) ion with mixed ligand 2,2’-Bipyridine and citric acid resulted in new Zn:Hcit:(bpy)1 (1) [Zn3(C6H5O7)2 (C10H8N2)3.(H2O)2 ].6H2O.(NH3)3 and Zn:Hcit:(bpy)2 (2) [Zn3 (C6H5O7)2 (C10H8N2)6] ...
• Investigation of Solvent and Concentration Effects on the Tautomeric Equilibrium of Acetamide 

  Wolde, Hailu (Addis Ababa University, 2020-03-06)

  Solvent effects on tautomeric equilibria of acetamide have been investigated by Infra-red spectroscopic technique. IR absorption spectra of solvents of varying polarity were recorded at different concentrations. The solvents ...
• An Electrochemical Sensor for the Oxidative Determination of 4-Nitro Phenol at Poly (Bromo Cresolpurple) Modified Glassy Carbon Electrode 

  Abebe, Ananiya (Addis Ababa University, 2020-02-06)

  A glassy carbon electrode was modified with bromocresol purple (BCP) and characterized for the electrochemical oxidation of 4-nitrophenol (4-NP) by cyclic voltammetry and differential pulse voltammetry. The oxidation ...
• Quantitative Determination of the Accumulation Level of Selected Essential and Toxic Heavy Metals in Korarima (Aframomum Corrorima), Ginger (Zingiber Officinale), Turmeric (Curcuma Longa) and Black Pepper (Piper Nigrum) Spice Plants and their Corresponding Soils Cultivated In Jima Zone, South West Ethiopia. 

  Gemechu, Tura (Addis Ababa University, 2014-06-06)

  The level of accumulation of selected essential and non-essential metals, namely; Ca, Cu, Zn, Ni, Cd, Pb, and Cr have been investigated in the seeds, fruits, and rhizomes, which is the edible part of some spice plants used ...
• Effect of Low Boiling Point Solvent Additives on the Photovoltaic Performance of Tq1:Pc61bm Based Bulk Heterojunction Solar Cells 

  Tukue, Hagos (Addis Ababa University, 2014-06-06)

  The need for clean, inexpensive and renewable energy has increasingly turned research attention towards polymer photovoltaic cells. However, the performance efficiency of these devices is still low in comparison with ...
• Effect of Polymer Structure and Composition on Photovoltaic Performance of Organic Conjugated Polymer Bulk Heterojunction Solar Cells 

  Adam, Getachew (Addis Ababa University, 2012-06-05)

  In this thesis solar energy to electrical energy conversion using organic conjugated polymer based bulk heterojunction solar cells has been studied by aiming at the effect of polymer structure and composition on minimizing ...
• Synthesis and Characterization of 1, 4- Dihydroquinoxaline-2,3-Dione Derivativesbased Co (Ii) and Ni (Ii) Complexes 

  Adefris, Efrem (Addis Ababa University, 2020-08-08)

  In recent years, there has been enhanced interest in the synthesis and characterization of transition metal complexes containing Schiff bases as ligands due to their importance. According to this concept, two Schiff base ...
• Synthesis,Characterization and Encapsulation of Bipyridine Transition Metal Complexes in Zeolite Y 

  Eskemech, Alehegn (Addis Ababa University, 2014-06-06)

  Transition metal (M = Co(II), Ni(II) and Cu(II)) complexes have been synthesized by refluxing the metal chloride with ligand, 2,2’–bipyridine .Tris(2,2’-bipyridine )complexes of cobalt(II), nickel(II), and copper(II) have ...
• Kinetics of Adsorption/Desorption of 1-Butyl-3-Methylimidazolium Bromide Into/Out of Mordenite 

  Chanie, Yewilsaw (Addis Ababa University, 2014-02-02)

  The adsorption and desorption kinetics of ionic liquid (1-butyl-3-methylimidazolimu bromide) on mordenite have been studied. Adsorption and desorption of ionic liquid into/out of calcined and uncalcined mordenite was ...
• Cathinone Level Determination in Khat Leaves by Quantitative Nmr Methods 

  Kiros Tsegu (Addis Ababa University, 2013-11-11)

  Catha edulis, commonly known as Khat, belongs to the family Celastraceae. Cathinone is the principal psychoactive constituent which is responsible for the stimulant effects of the leaves of the plant. In this work, rapid ...
• Synthesis and Structural Studies of a New Polydentate Ligand and its Ni (II) and Zn (II) Complexes 

  Fekadu, Tsegaye (Addis Ababa University, 2015-02-02)

  A new polydentate ligand N-(2-hydroxyphenyl)-2-[(2-aminophenylamino)] acetamide, (HPAPAA) has been synthesized in the reaction between N-(2-hydroxyphenyl)-2- chloroacetamide and o-phenylenediamine. The Ni (II) and Zn ...
• Solid-State and Quasi-Solid State Photoelectrochemical Solar Energy Conversion Based on Polymer PDTSTTz 

  Tibebu, Dawit (Addis Ababa University, 2014-06-06)

  The photoelectrochemical properties of a solid-state and a quasi-solid state photoelectrochemical cell (PEC) based on a polymer PDTSTTz and a blend of PDTSTTz:PCBM with an amorphous polymer electrolyte Poly[oxomethylene- ...
• Two Long Chain Alcohols from Leaves of Moringa Stenopetala 

  Gezae Taame (Addis Ababa University, 2014-02-02)

  Plants have been and will remain vital to mankind, animals as well as the environment. The present study focuses on the phytochemistry of the endemic food and medicinal plant species known as Moringa stenopetala, which is ...
• Synthesis and Characterization of New Ionic Liquids from 1, 10- Phenanthroline and 4, 4’-Bipyridine 

  Abebe, Atakilt (Addis Ababa University, 2012-06-06)

  New ionic liquids (ILs) from 1,10-Phenanthroline and 4, 4’- Bipyridine have been synthesized. The synthetic procedure is based on the typical alkylation plus anion methathesis steps common to commonly used ionic liquids. ...
• Study of Charge Transport Properties of Conjugated Polymers and Photovoltaic Performance of Bulkheterojunction Solar Cells 

  Esubalew, Debebe (Addis Ababa University, 2012-05-05)

  Alternative energy source of the world in the future is organic photovoltaic, which is sustainable and environmentally friendly. Among the different organic photovoltaics, the class of bulk heterojunction solar cells ...
• Synthesis and Characterization of Schiff Base Complexes Derived from 2,4-Dihydroxy Benzophenone, 2-Hydroxy-4-Methoxybenzophenone and Hydrazin. 

  Temesgen, Shewaye (Addis Ababa University, 2013-06-06)

  Metal complexes of Ni (II) and Cu (II) with Schiff base 2,4-DHBPAM derived from the condensation of 2,4-dihydroxy benzophenone with hydrazine have been synthesized and characterized on the basis of elemental analyses, ...
• Level of Fluoride in Staple Cereals and Legumes Produced in Selected Areas of Ethiopia 

  Mustofa, Seid (Addis Ababa University, 2013-06-06)

  Fluorosis is a public health problem in certain part of Ethiopia, especially in rift valley areas. Fluoride is widely present throughout the food supply. The general population can be exposed to fluoride through drinking ...
• Characterization of Native Vernonia Oil and the Preparation of Derivatives for Application as Performance Materials 

  Desalegn, Tegene (Addis Ababa University, 2012-06-06)

  In recent years, the interest in finding environmentally friendly or green biodegradable materials derived from natural resources as alternatives to non-biodegradable petroleumbased polymers has increased dramatically. ...
• Levels of Potentially Toxic Elements and Polycyclic Aromatic Hydrocarbons in Sediment, Swiss Chard and Water of Akaki River, Lake Awassa and Lake Ziway, Ethiopia 

  Nigussie, Kebede (Addis Ababa University, 2014-04-04)

  In this work, the levels of potentially toxic elements and polycyclic aromatic hydrocarbons in sediment, Swiss chard and water of Akaki River, Lake Awassa and Lake Ziway, Ethiopia, were determined, employing comprehensive ...

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