• Newly Developed Methods for the Determination of Selected Pharmaceuticals in Water and Vegetable Samples by HPLC and their Removal 

  Tegegne, Bisratewongel (Addis Ababa University, 2021-06-22)

  Pharmaceutical consumptions are now increasing worldwide as it is essential to treat and prevent health issues but at the end of the day, they end up in the environment as a persistent pollutant. However, very little ...
• Phytochemical Studies of Cyperus Esculentus Carissa Spinarum Melilotus Officinalis Rhus Glutinosa and Rhus Natalensis 

  Assefa, Melaku (Addis Ababa University, 2021-09-12)

  In this study, the essential oils obtained from the rhizomes of Cyperus esculentus L. and the roots of Carissa spinarum Linn. together with medicinal smoke obtained from burnt roots of Carissa spinarum were analyzed by ...
• Phytochemical Investigation and Antioxidant Analysis of Seeds and Aerial Parts of Coriander (Coriandrum Sativum L.) Cultivated in Ethiopia 

  Assefa, Mekides (Addis Ababa University, 2021-08-31)

  In this study essential oils extracted from coriander seed and aerial parts of the samples collected from Sululta, Jimma and Wolaita Sodo were analyzed using GC-MS. Similarly, fatty acids from the coriander seeds were ...
• Development of Choline Chloride Modified Glassy Carbon Electrode for the Determination of Pentachlorophenol 

  Berhe, Meron (Addis Ababa University, 2021-07-19)

  A simple, sensitive electrochemical sensor was developed for the determination of pentachlorophenol (PCP) using low cost and environmental friendly choline chloride (ChCl) modified glassy carbon electrode (GCE). The ...
• Determination of Selected Heavy Metals in Little Akaki Waste Water by Using Graphite Furnace Atomic Absorption Spectroscopy (GFAAS) 

  Melese, Gashaw (Addis Ababa University, 2021-06-06)

  In this study, river water samples taken from three different locations along the course of the Little Akaki and Entoto River in Addis Ababa were analyzed to determine potentially toxic trace element concentrations. The ...
• Phytochemical Studies on Premna Schimperi Engl (Lamiaceae) 

  Nasir, Mohammedamin (Addis Ababa University, 2021-09-20)

  In this study, attempts were made to isolate secondary metabolites from the solvent extracts of the dried leaves of Premna schimperi Engl. The essential oil obtained by hydrodistillation of the dried leaves of P. schimperi ...
• Simultaneous Determination of Ampicillin Sodium and Sulbactam Sodium in Binary Mixtures and Commercial Dosage Forms using Chemometrics Assisted Spectrophotometric Techniques 

  Mamo, Zelalem (Addis Ababa University, 2009-06)

  The binary mixture of ampicillin sodium and sulbactam sodium is officially analyzed by HPLC but they can not be simultaneously determined by the normal spectrophotometric techniques since their absorption spectra have a ...
• Flame Atomic Absorption Spectrophotometric Determination of some Selected Minerals in Multivitamin Pharmaceutical Dosage forms Marketed in Ethiopia 

  Mengistu, Mequanent (Addis Ababa University, 2009-12)

  Six commercial brands of multivitamins with multimineral marketed in Ethiopia were analyzed for their macro Ca (II), Mg (II) and K (I)) and micro Cr (III and VI)) elemental quantitation , prior to analysis samples were ...
• Determination of Heavy Metal (Cr, Cd, Pb, Ni) Concentration in Paint Industry Effluent in Addis Ababa Ethiopia by Flame Atomic Absorption Spectroscopy (FAAS) 

  Hailemichael, Million (Addis Ababa University, 2021-11-23)

  Heavy metals pollution is a major problem in both developed and developing countries. In Ethiopia, the wastewater in most of the paint industries is not treated properly, but instead is fed directly into rivers. Recently, ...
• Removal of Hexavalent Chromium by Adsorption Using Stem Extract Material from Water Hyacinth 

  Mekonen, Nibret (Addis Ababa University, 2021-07-27)

  Environmental pollution is one of the public issues for both developed and developing countries due to population growth, industrialization, urbanization and economic development. Toxic heavy metals are the most common ...
• An Investigation of the Flavonoids of Berbera (millpttia ferruqinea) 

  Bekele, Amha (Addis Ababa University, 1988-06)

  Mi ~letti a f-?rr ;~~~in~a (Hcc:--'!s-:) BAK .. : ·:>ca.l:y known as Berbera is a pla~t ~~ ~ ·~~ic to ~thi0?:a. P":1ytochemi c~!l.l ir-:ve.=t'::7a+_ic-:1 of t~·;,:: st.eI:l-!:H:1!.-}-: cf ·.:.~:ls I.J :a.!it r-es:..tlted ...
• Determination of Selected Metals in Pumpkin Peel Flesh and Seed Samples from three Different Areas in Ethiopia by Microwave Plasma Atomic Emission Spectrometry 

  Yetesha, Abeb (Addis Ababa University, 2021-07-23)

  In this study the level of selected metals (Na, Mg, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Cd) and health risk assessment of heavy metals (Mn, Ni, Cu, Zn, Cr, Cd) in pumpkin peel, flesh and seed were determined using microwave ...
• Investigation of Solvent Effects on Carbonyl Stretching Vibrational Frequency of Camphor 

  Fituma, Abiyot (Addis Ababa University, 2021-08-30)

  Solvent effects on the carbonyl stretching vibrational frequency of Camphor were investigated. The solvents were chosen to cover wide polarity range and include carbon tetrachloride,2-propanol, methanol, and acetonitrile. ...
• Disposable Screen Printed Carbon Electrode Based Electrochemical Sensors for the Determination of Brucine Chloramphenicol Niclosamide and Nicotine 

  Hailu, Tesfu (Addis Ababa University, 2021-09-23)

  In this study, various types of simple, scalable and low cost chemically modified electrodes were successfully developed for the sensitive and selective determination of niclosamide (NA), chloramphenicol (CAP), Nicotine ...
• Simultaneous Determination of Iron (III) and Cobalt (III) with N-Phenylcinnamohydroxamic Acid and Triocyanate and Determination of iron (III) with N-Phenylcinnamohydroxamic Acid with Azide by Solvent Extraction Spectrophotometry 

  Afeworki, Selezion (Addis Ababa University, 1986-06)

  Iron(III) dnd cobalt(II) have been found to react with thiocyanate.. in the. presence of N- phenylcinnamohydroxamic acid to form pinkish red and blue colored complexes , respectively
• Macrocyclic Pyrpolizdine Alkalolids from Crotalaria Rosenii 

  Atnafu, Getachew (Addis Ababa University, 1986-06)

  Crotol aria rosenii , f amily Leguminosae ,
• Levels of Some Nutrients in Cow's Whole Milk and Commercial Infant formulas Distributed in Addis Ababa, Ethiopia 

  Admasu, Engdawork (Addis Ababa University, 2005-06)

  Three brands of infant fonnulas (n = 3) and 618 cow's whole milk samples from four different famls, which supply milk to Addis Ababa, were analyzed for various essential (Ca, Mg Fe, and Zn) and non-essential (Cd, Ni, Pb, ...
• Chemical Investigations of Heteronema Erecta and an Unidentified Sponge from the Red Sea 

  Shewaye, Dejene (Addis Ababa University, 1989-06)

  Hcteronemin , a pentacyclic sestcrterpene has been Characterized from the Chloroform extr act of an unidentified sponge sample collected f rom Mas sawa, Red Sea . the Structure was established by 1H nmr, 13C nmr , and ...
• Studies on Manganese_N1_-Hydroxy_N, 1,N2_ Diphenylbenzamidine Complexes by Solvent Extraction and Spectrophotometry 

  Ayele, Dejene (Addis Ababa University, 1989-06)
• Bulk Heterojunction, Natural, and Synthetic Dye Sensitized Photoelectrochemical Solar Energy Conversion 

  Tadsse, Sisay (Addis Ababa, Ethiopia, 2012)

  A solid-state photoelectrochemical solar energy conversion device based on blend of poIY(3 -hexy lthi ophene) (P3HT) and 1- (3-methoxycarbony l)propyl- l-phenyl (6,6]C61 (PCBM), and an amorphous poly(ethylene oxide) ...

View more