• 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 ...
• Synthesis and Chgraoterization of Different Ion-pairs [ co(py) 4Cl2 ] +X- and measurement of assooiation and aquation rate constants 

  Kebede, Zerihun (Addis Ababa Universty, 1988-06)

  The dichlorotetrapyridineCobalt(lll) complexes ~co(PY)4C12 ~ X(X = Cl- , N~-, 01° 4 -, 1° 4 -, SCN-, N~-) were synthesized and oharacterized by using elemental analysis and speotroscopio techniques. The spectral data ...
• Levels of Essential Elements in Three Tef [Eragrostis Tef(Zucc.)Trotter] Varieties. 

  Kebede, Zeleke (Addis Ababa Universty, 2009-07)

  Tef, [Eragrostis tef(zucc.)Trotter] is an indigenous crop plant in Ethiopia. It provides the most staple food-Enjera for most Ethiopians. An efficient wet digestion procedure with the percentage recovery ranges from 85.66 ...
• Phytochemical Investigation on the Stem Bark of Croton Macrostachyus (Bisana) 

  Yibralign, Zelalem (Addis Ababa Universty, 2007-07)

  The Croton macrostachyus is used for the treatment of malaria, venereal diseases, cough, diabetes, constipation, tape worms and hepatitis. The dichloromethane extract of the stem bark of Croton macrostachyus was afforded ...
• Levels of Trace Cadmium and Essential Zinc in Wheat flour Commercially Available in Addis Ababa, Ethiopia 

  Tadesse, Zelalem (Addis Ababa Universty, 2006-07)

  Samples of wheat flour were collected from five different wheat flour processing industries (DHGEDA, KOJJ, Akwan, Redfam, and Misrak.). Different digestion procedures were tested by varying the type of reagent, temperature ...
• Levels of Nicotine in Ethiopian Tobacco Leaves 

  Tassew, Zebasil (Addis Ababa Universty, 2009-03)

  In this paper the level of nicotine in four different varieties of Ethiopian tobacco leaves was determined using High Performance Liquid Chromatography (HPLC) method of analysis. Among the variety of species Virginia ...
• Electrochemical Detection of Methyl Parathion using poly-(4-amino-3-hydroxynaphthalene-1-sulphonic acid) Modified Glassy Carbon Electrode 

  Bereket, Yoseph (Addis Ababa Universty, 2009-07)

  A glassy carbon electrode (GCE) was modified with electropolymerization of 4-Amino-3- Hydroxynaphthalene-1-Sulphonic acid (AHNSA) in 0.1M HNO3 using cyclic voltammetry. The modified electrode showed an excellent ...

View more