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Browsing College of Natural and Computational Sciences by Issue Date

Browsing College of Natural and Computational Sciences by Issue Date

Now showing items 1-20 of 6242

Possible Application of Data Mining Technology in Supporting Credit Risk Assessment: the Case of Nib International Bank S.C.

Shawui, Meretework (Addis Ababa University, 204-07)

Financial institutions in a nation playa crucial role in the development of its economy. The banking sector as one type offinancial institution is indisputably the new ji'ontier of economic development in a country. In ...
Information Support System for Energy Planning in Zambia

Kalusopa, Trywell (Addis Ababa University, 1194-06)

This study investigated the inf ormation s upport sy stem f or energy planning in Zambia and pre s en t s poss i ble ways of streng t hening t he existing inf ormati on s ys t em and services. A systems analysis has ...
Polarographic Investigation Op B-N-Oxalyl-L-A,B-Diaminofr.Ofrionic Acid, A Neurotoxin Prom The Seeds Op Lathyrus Sativus(Guaya)

Yohannes, Teketel (Addis Ababa Universty, 1969-06)

Polarographic investigations of £-N-Oxalyl-L-a > 0-Diaminopropionic acid, ODAP, a neurotoxin from the seeds of Lathyrus sativus(Guaya) have been made. Aqueous solutions of ODAP in KC1 supporting electrolyte gave a ...
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 ...
The Reaction Op Brcmoacetil Bromide with Selected Orgahometallic Compounds

Tafesbe, Fikru (Addis Ababa Universty, 1980-06)

Organometallic compounds are widely used as heterogenous and homogenous catalysts in the industrial productions of important chemicals and synthetic products. In many cases of such industrial transformation, metal carbenes ...
A Comparative Study on the Effect of Gulein Three Areas: Sendafa , Debre Berhan and Fiche

Kifle, Anketsebrhan (Addis Ababa University, 1980-06)

Samples were collected from the three sites: Sendafa, Debte Ilerhan and Fiche to study changes induced by "Guie" practice. 'l'he chemical and physical changes as well as the growth of barley in these soils was compared ...
Analyses of the Essential Oils of Artemisl Rehan and Cymbopogon Citratus

G.Yohannes Paulos (Addis Ababa Universty, 1980-06)

Artemisia rehan Chiov and Cyifopogon citratus (DC) Stapf are widely grown in thelighlands of Ethiopia. These plants occupy a significant|sition in Ethiopian I plantlore. | The oil of Artemisia rehan, anendemic plant ...
An Eco-Physiological Study of Cultivated Barleys in welmera

Asfaw Zemede (Addis Ababa University, 1980-06)

In eco-physiological studies, problems that originate from field , , observations aretack~d both through field work and laboratory studies. This paper presents e study made on the eco-physiology of barley (Hordeum Sect. ...
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 ...
Identification of Serotypes and Assessment of' Multiple Drug Resistance In 360 Shigella Isolates

G/Yohannes, Afework (Addis Ababa University, 1980-06)

Three hundred and sixty urban and rural Shigellae isolates were analysed in respect to serogrouping, serotyping, biochemotyping and drug resistance. S. flexneri (50.55%) was most common, followed by £. dysenteriae ...
The Application of the Enzyme Linked immunosorbent Assay (Elisa) In t'he Sehodiagnosis of Schistosoniasis

Taticheff, Seyoum (Addis Ababa University, 1980-06)

A description of the schistosome parasite and its life cycle, its immunology and the fact that the parasite causes a disease of world-wide significance is made. The existing distribution of schistosomiasis in Ethiopia ...
Identification of Stereotypes and Assessment of Multiple Drug Resistance in 360 Shigella Isolates

Gebre, Afeworki (Addis Ababa,University, 1980-06)

Three hundred and sixtyur ban and rural Shi gellae isol ates were analysed in r espec t t o scr ogr oupins , ser otypinS , biochemotyping and drug resistance . S. f l exne r i (50 . 55~ ) was mos t common , f ollowed by ...
A Comparative Study on the Effect of “Guie” in Three Areas: Sendafa, Debre Berhan and Fiche

Kifle, Anketsbrhan (Addis Ababa,University, 1980-06)

Samples were collected from the three sites: Sendafa. Debre Berhan and Fiche to Study Changes induced by ‘’Guie” Practice. the Chemical and Physical Changes as well as the growth of barley in These Soils was Compared ...
An Ecological Study of the Hontane Grassland Vegetation in Holmzra Horeda

Woldu Zerihun (Addis Ababa University, 1980-07)

A study of the erasslands in \/olmera \Iereda was made from A August 1979 to October 1979. One hundred and twenty stands were systematically sampled and the occurence of 118 plant species in the stands recorded. Some ...
Electro-organic Synthesis of Some Natural Products Analogues

Tecle, Berhane (Addis Ababa Universty, 1980-07)

In this project an attempt was made to prepare lignans by oxidative and reductive coupling of the a-enolates and a-bromo derivatives of substituted propiophenones respectively. Propiophenone derivatives were prepared ...
Geothermal Study in Northwest Lake Abaya Area (Southern Ethiopian Rift)

Yirgu, GeZahegne (Addis Ababa Universty, 1980-07)

Geothermal energy, the cheapest amorlY ttl~ differeDt soutced of power, is thought to provide a solution for the rising demand of electricity in Ethiopia, because the Ethiopian Rift Valley and Afar area have been ...
A S'l'udy on the STructure of a Hon'fane Forest - the Menagesha State Forbst

Demissew Sebsebe (Addis Ababa University, 1980-07)

In order to have a better management for existing forests, and to reafforest devegetated areas an ecological study of forests is indispensable. Menagesha State Forest which is one of the few remaining forests in Central ...
Hydrogeology of the Borkena River Basin Hollo – Ethiopia

Tadesse, Ketema (Addis Ababa Universty, 1980-07)

The Borkena Hiver Basin is located in Wollo governorate general. It is part of a major graben related to the Ethiopian Rift System, which extends north to Korbeta graben around Maichew and south upto Debre Berhan, and ...
An Ecological Study of the Montane Grassland Vegetation in Wolmera Woreda

Woldu, Zerihun (Addis Ababa,University, 1980-07)

A study of the grasslands in wolmera wereda was made from August 1979 to Octobr 1979.one hundred And twenty stands were systemat ically sampld and the occurece of 118 pl specis in t e stands rcorded . 'orne envir o ...
The Geology Geochemistry and Origin of Supplied Mineralization in Katta,Wollega Province

Mammo, Telahun (Addis Ababa University, 1980-07)

The Katta rocks form part of the Birbir group of the upper compl ex s i tuated in the paleo- cal c-alkaline arc that runs northsouth across the country and which compri ses thick sequences of metavolcanic and metasedimen ...

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