• Coulomb Blockade Oscillations, Tunneling and Electrons Transport Through Quantum Dots 

  Gudeta, Lamessa (Addis Ababa University, 2018-06-01)

  In this thesis, we studied Coulomb blockade oscillations, tunneling and electrons transport through a quantum dot. Coulomb blockade oscillations of the conductance are a manifestation of single electron tunneling through ...
• Trace Level Sample Preparation Techniques for Selective Extraction of Pesticide Residues In Environmental and Food Samples, and Their Quantitative Removal From Contaminated Waters Utilizing Typha Latifolia Plant Parts 

  Tolcha, Teshome (Addis Ababa University, 2018-06-05)

  The objective of this thesis work is to develop various miniaturized and green sample preparation techniques for the determination of pesticide residues in matrices of different origin and the quantitative removal of ...
• Petrography and Petrology of Gina Ager-Megezez Locality, Megezez Shield Volcanics North Shoa, Central Ethiopia 

  Mengistie, Tenaw (Addis Ababa University, 2018-06-02)

  Megezez shield volcanics is a mountain area with elevation ~3593 meter above mean sea level forming gentle slope of (~50); situated on the north western margin of main Ethiopian rift, central Ethiopia. The area is located ...
• Determination of Levels of Selected Metals In the Leaves ‘Tena Adam’ (Ruta Chalepensis L.) Collected From Four Selected Areas Around Addis Ababa 

  Admasu, Solomon (Addis Ababa University, 2018-04-07)

  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 ...
• Atomic Absorption Determination of the Levels of Cr and Pb In Batu Tannery Waste Water and Sebeta River 

  Ahmed, Endris (Addis Ababa University, 2018-02-02)

  Tannery effluents consist of large amounts of heavy metals that are toxic to our health. Release of untreated tannery effluents to the water bodies have a negative impact on water quality directly and human health indirectly. ...
• Aquifer Characterization of Assosa Town, Benishangul-gumuz Regional State, Western Ethiopia 

  Bekele, Gadisa (Addis Ababa University, 2017-06-01)

  This study assessed in Assosa catchment of Benishangul Gumuz Regional State, Western Ethiopia which is aimed to characterize Assosa Town ground water systems with the help of different methods and approaches that includes ...
• Optimization of Sample Pretreatment Methods for the Applications of Glutamate Oxidase Reactor in Flow Injection Analysis of the Neurotoxic P -Odap in Grass Pea (Guaya) 

  Ahmed, Kassim (Addis Ababa Universty, 1998-06)

  In the determination of p-ODAP by flow injection analysis using a glutamate oxidase reactor , the major problem is that proteins and other macromolecules cause a rapid decay of the activity of the reactor when an extract ...
• Pharmacogenetic and Molecular Biological Analysis of Drug Metabolizing Enzymes, in Particular, Cytochromes N502d6 (Cyp2d6) and P4502c19 (Cyp2c19) in an Ethiopia Population 

  Aklillu, Eleni (Addis Ababa Universty, 1995-06)

  Debrisoquine and S-mephenytoin hydroxylation polymorphism was studied in 115 healthy unrelated Ethiopian volunteers after coadministration of debrisoquine (lOmg) with S-mephenytoin (lOOmg). The ratio of the S to the R ...
• Synthesis of Selenite and Tellurite Pased Cation Exchangers and their Selected Applications 

  Sisay , Tezera (Addis Ababa Universty, 1980-06)

  The synthesis of zirconium selenite and thorium tellurite are reported. Zirconium selenite has been prepared by mixing 4 N HCl solution of zirconium oxychloride with 4 N HCl solution of sodium selenite, and by adjusting ...
• A Dissertation Presented to the Faculty of the Graduate School of Arts and Sciences of Braitdeis University, Waltham , Massachusetts 

  Biftu, Tesfaye (Addis Ababa Universty, 1978-08)

  2,3- Diaroylbutanes were selectively converted with high stereospecificity to 2,5~diaryl“3,4-dimethylfurans or 2,3- diarylbutanes. The racemic forms of the dibenzylbutane lignans, dihydroguaiaretic acid dimethyl ether ...
• Synthesis of Carbohydrate Esters from Vernonia Galamensis Seed Oil 

  Alem, Addisu (Addis Ababa Universty, 2016-10)

  Vernonia galamensis is one of only a few plants containing naturally occurring epoxy oils in its seeds known as vernonia oil. Seeds of vernonia galamensis produce triglyceride oil rich in trivernolin that can be converted ...
• Solvent Extraction and Spectrophotometric Determination of Vanadium ( V ) with N-Pheny Icinnamoh droxarnIc Acid and Azide or Trichloroacetic Acid 

  Chandravanshi, B.S. (PhD) (Addis Ababa Universty, 1986-06)

  N-p h o n y i c i n n amo h y d r o x ami c a c i d, PCHA, wa s f o u n d t o r e a c t wi t h v a n a d i um ( V ) i n t h e p r e s e n c e o f a z i d e o r t r i c h l o r o a c e t i c a c i d ( o r c h l o r o a c ...
• Quantum Chemical Study of Molecular Cluster of Silica 

  Regassa, Admassu (Addis Ababa Universty, 1990-06)

  The. Ut.le. st.udy w .... unde.r-t.ake.n t.o an e.lablJr-at.e.d clust.e.» mode.l of' silica ge.l and t.o inve.sUgat.e. adso»pt.ion comple.xe.s of pr-ope.ne. wit.h silica using INDO me.t.hod and opt.imizat.ion of geomet.»y. ...
• Application of Chemometrics Methods to Resolve Intermediates Formed During Photocatalytic Degradation of Methyl Orange 

  Aregahegn, Zeyede (Addis Ababa Universty, 2016-06)

  The efficiency of two catalysts (TiO2 and TiO2 supported on zeolite) for the photocatalytic degradation of MO dye has been evaluated by means of chemometrics methods by using UV/Vis spectroscopic data of the degraded ...
• Determination of Nicotine content in Virginia Tobacco of Ethiopia 

  Tefera, Zewdu (Addis Ababa Universty, 1996-06)

  Tobacco is a complex chemical matrix, and annlY~ls or one or it, components. nicotine. is from the filct that varities arc inherently dim-.rent in their niclIilnl' c()ntlmts. Varities retain their relative rankings in ...
• Synthesis and Characterization of Quinoxqline-Fluorene-Thiophene Containing Polymers 

  Messele, Zewdu (Addis Ababa Universty, 2009-07)

  In the course of this project, the synthesis of polyquinoxaline copolymers was attempted. Monomer 5,7-bis(5-bromothiophen-2-yl)-2,3-bis(5-butylthiophen-3- yl)thieno[3,4-b]pyrazine (51) was synthesized successfully. Two ...
• Synthesis and Characterization of Some Nitridc Molybdenum and Tungsten Complexes 

  Gebeyehu, Zewdu (Addis Ababa Universty, 1993-06)

  The nitridomolybdenum(VI) complexes MoI'TOI (OPPh^)p and LMoUCl^j were synthesized from lioCl^CCH^CN)^, \ sodium azid, triphenylphosphine oxide and totrabutylaromonium chloride respectively in acetonitrile. The reaction ...
• Mechanistic Studies of the Hydrolysis of Pyrophosphate Promoted by Tetraaminecobalt(III) Ions 

  Abebe, Zewdu (Addis Ababa Universty, 1990-06)

  The hydrolysis of pyrophosphate was investigated at different concentrations (2X10~3 M, 4X10~3 M and 1(f2 M) of [N4CO(OH)(OH ))2+ [N. = en2 and tn^ ten = ethylenddiamine, tn = trimathylenediamine)] 2+ + ' - using Eu /H ...
• Fluorene-Based Alternating Copolymers: Synthesis and Characterization 

  Genene, Zewdneh (Addis Ababa Universty, 2010-07)

  Alternating polyfulorene copolymers, which have donor-acceptor-donor segments in between the fluorene segments were synthesized and characterized. The donoracceptor- donor monomers, namely, 5,8-bis(5-bromothiophen-2-yl ...
• Chemical Constituent of Euclea schimperi 

  Tesfai, zerom (Addis Ababa Universty, 1988-06)

  There are two indegineous Euclea species in Ethiopia of a total of nearly 20 species of Euclea in the world all of which are restricted to tropical and subtropical Africa, Eucl80 schimJ?erU (family Ebenaceae), known ...

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