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SYNTHESIS A ND C HARACTERIZATION OF NOVOLAC RESIN AND THEIR KIN ETI C ST U DIES USING PHENOL-FORMALDEHYDE REACTIONCATALYZED BY HY DROCHLORlC ACID

NI GUS MESELE (Arba Minch University, 2011-04)

Phenol- formaldehyde novolac resins have been synthesized using 1: 0. 75 molar ratio of Phenol · to Formaldehyde. In the resulting reaction solution, HCl was added dropwise, at twelve different ...

SYNTHESIS A ND C HARACTERIZATION OF NOVOLAC RESIN AND THEIR KIN ETI C ST U DIES USING PHENOL-FORMALDEHYDE REACTIONCATALYZED BY HY DROCHLORlC ACID

NI GUS MESELE [Reg/No/ RMSc/273/01 (Arba Minch University, 2011-04)

Phenol- formaldehyde novolac resins have been synthesized using 1: 0. 75 molar ratio of Phenol · to Formaldehyde. In the resulting reaction solution, HCl was added dropwise, at twelve different ...

SWAT BASED RUN OFF AND SEDIEMNT YIELD MODELLING (A CASE STUDY OF GUMARA WATERSHED IN LAKE TANA SUB BASIN), ETIDOPIA A THESIS SUBMITTED TO THE SCHOOL OF GRADUATE STUDIES,

Mequanint Tenaw Asress (Arba Minch University, 2008-08)

Land degradation is a series threat in the Ethiopian high lands in general and in Gumara watershed in particular reflected in the form of soil erosion and soil fertility decline. Sheet and ...

Mechanism of Nicotinate Dehydrogenase and its activity compared with Molybdoenzymes Possessing Sulfido, Oxo and Tellurido Terminals in Their Reductive Half-Reaction Active Site

SOFANI TAFESSE (Arba Minch University, 2011-05)

The active site of Nicotinate Dehydrogenase is somewhat similar to xanthine oxidoreductase (XOR) except the equatorial sulfido group in Xanthine oxidase is replaced by sellenido group in ...

FARMERS' PERCEPTION TOW ARDS ORGANIC AND INORGANIC FARMING: CASE OF CHEBERA SHASHO KEBELE, KONTA SPECIAL WOREDA, SOUTH WEST ETHIOPIA.

MELESE WIMARIAM (ARBA MINCH UNIVERSIT, 2015-07)

Agriculture is the major economic backbone of most countries in the world, particularly in Africa Ethiopia is a country whose economic policy is led by agriculture. Yet it is famine prone due ...

An Orbital Control of Substrate Reactivity on the Enzyme Xanthine Oxidase and the Substrate-Enzyme Binding Cofactor Reduction

KIBROM TEKLA (Arba Minch University, 2011-05)

In humans, the xanthine oxidase enzyme plays an important role in physiological hydroxylation of hypoxanthine to xanthine, xanthine to. uric acid and it has been a target of drugs against disease ...

SYNTHESIS, CHARACTERIZATION AND PHOTOCTALYTIC ACTIVITY OF ALUMINIUM-IRON MIXED OXIDE NANOPARTICLES FOR PHOTODEGRADATION OF CONGO RED

YONAS WELDEMARIAM (ARBA MINCH UNIVERSITY, 2011-05)

n this study synthesis, characterization and photocatalytic application of alumina-iron mixed oxide nanoparticles has been made. Four series of alumina- iron mixed oxide catalysts (Fe203, Al203 ...

A THESIS SUBMITTED TO ARBA MINCH UNIVERSITY IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE DEGREE OF MASTERS OF SCIENCE IN HYDROLOGY AND WATER RESOURCES MANAGEMENT

DEREJE ADEBA GERBI (Arbaminch University, 2007-07)

The August, 2006 flood event was one of the most significant and damaging natural disasters ever hit Diredawa. The total damages to public and private property were estimated 94,327,416.21Birr, 256 people died,244 people ...

A STUDY ON CHANGES OF WOODY VEGETATION COMPOSITION ALONG ALTITUDINAL GRADIENT FROM LAKE ABAYA TO IIlLLS OF DORZE, GAMO GOFA ZONE, SOUTHWEST ETHIOPIA

ABADI BIRHANU (Arbaminch University, 2012-02)

This study was conducted on the forest between Lake Abaya and hills of Dorie. Gama Gofa zone. SNNPR. Southwest Ethiopia. The objective of the study was to determine woody species composition and structure of the vegetation. ...

TEMPORAL AND SPATIAL VARIATIONS IN BIOMASS AND PHOTOSYNTHETIC PRODUCTION OF PHYTOPLANKTON IN LAKE CHAMO, ETHIOPIA.

EYASU SHUMBULO (Arbaminch University, 2014-07)

The temporal and spatial variations in the hiomass and photosynthetic production of phytoplankton in relation to some physico-chemical environmental factors were investigated at two (offshore and near-shore) stations in ...

THE EFFECT OF SCREENING DOORS AND WINDOWS ON INDOOR MALARIA TRANSMISSION, AND ITS DURABILITY AND COMMUNITY ACCEPTANCE IN ARBA MINCH TOWN, SOUTHWESTERN ETHIOPIA: A RANDOMIZED TRIAL

TEMESGEN ASHINE AMENU (arbaminch university, 2017-02)

There is a reduction in the burden of malaria globally due to extensive application of bed nets, indoor residual spraying, effective drugs and diagnostic tools. To sustain the gain and accelerate the current reduction, ...

IMPACT OF CLIMATE CHANGE ON RUNOFF IN THE UPPER BIRBIR SUB BASIN, WESTERN ETHIOPIA

MEKONEN MERGA ITICHA (ARBA MINCH UNIVERSITY, 2016-11)

Climate change is a topic of discussion worldwide including Ethiopia. The present study assessed the possible impacts of climate change on runoff in the upper Birbir sub basin which is located ...

AEROBIC-ANOXIC BIOPROCESS FOR THE TREATMENT OF MUNICIPAL WASTEWATER AND APPLYING THE EFFLUENT FOR IRRIGATING VEGETABLE CROPS

ASAMIN YESIGAT DESSIE (ARBA MINCH UNIVERSITY, 2017-02)

This study was designed to evaluate the treatment performance of aerobic-anoxic bioprocess system for Arba Minch Town (AMT) municipal wastewater treatment. Wastewater sample were collected and ...

COMPARISON ON STABILITY AND CONVERGENCE OF FINITE DIFFERENCE METHOD IN TRANSFORMING NON DIMENSIONAL EXPLICIT AND IMPLICIT PARABOLIC PAR TIAL DIFFERENTIAL EQUATION

GIRMA MITIKU (Arbaminch University, 2009-02-13)

In this thesis the convergence and stability criteria of the FDM in parabolic (heat) equation is examined with the Fourier and Neumann analysis and comparison is made for those methods, namely implicit, explicit and Crank ...

AnomalousCirculationPatternsAssociatedwithWetandDry RainfallyearsoverEthiopiaduringSummerSeasons

ABAT EGETACHE W (Arbaminch university, 2009-01)

Theeconomyo fEthiopiadependsonrain-fedagriculture,whichishighlysensitiveto seasonalandinterannualvariationso frainfall .Adequateamounto frainfal lisrequired everyyearforadequateagriculturalproductionanddrinkingwater. ...

ANALYSI SO FTH EVARIABILIT YO FRAINFAL L DISTRIBUTIO NAN DEVAPOTRANISPIRATIO NOVE REASTER N

BANCHIAMLA KKEBED E (Arbaminch university, 2009-07)

Rainfallvariabilityanalysiswasconductedi nEasternAmharaRegion,whichisoneo f themostdrought-hitregionso fEthiopia.Onthisregions ofarnoattempthasbeen undertakentoanalyzethespatialandtemporalvariabilityo frainfalli ...

COMPARISON OF NUMERICAL METHODS TO SOLVE TRAFFIC FLOW MODEL

MUKTAR NURI (Arbaminch university, 2016-10-22)

Traffic congestion has a significant impact on economic activity throughout much of the world. In our country there is a higher density of population and activities require more efficient infrastructure development. But ...

MATHEMATICAL MODELLING OF THE INTERACTION BETWEEN CANCER AND THE IMMUNE SYSTEM WITH TREATMENT (THERAPY)

AREGASH DAWUD HASSEN (Arbaminch university, 2016-09)

Cancer is a disease caused by the accumulation of phenotype-altering genetic mutations in somatic cells. A mathematical model describes the impact of the immunodeficiency virus on the cellular population of tumor-immune ...

Bacterial wilt(Ralstonia solanacearum ) Ginger(Zingiber officinalae small holder farms, in KambataTembaro Zone, Kacha bira woreda ARBA MINCH UNIVERSITY COLLEGE OF NATURAL SCIENCES SCHOOL OF GRADUATE STUDIES DEPARTEMENT OF BIOLOGY Ralstonia solanacearum ) disease incidence of officinalae Roscoe) and its socio-economic impact in small holder farms, in KambataTembaro Zone, Kacha bira woreda

Mezgebework Lukas Shanka (Arbaminch university, 2016-08)

Ginger bacterial wilt caused by Ralstonia solanacearum is a notable impediment of production of ginger (Zingiber officinale Roscoe) in ginger growing area. It a common disease that affects the ginger crop ...

GREEN SYNTHESIS, CHARACTERIZATION, ANTIBACTERIAL AND ANTIOXIDANT ACTIVITIES OF SILVER NANOPARTICLES SYNTHESIZED USING AQUEOUS EXTRACT OF MORINGA STENOPETALA LEAVES

ABAMBAGADE ABERA MITIKU (2016-10)

Nanotechnology is the most promising field for generating new applications in medicine. Green synthesis of AgNPs is an efficient, fast, cheap, non-toxic, simple, and eco-friendly than commonly used physicochemical ...

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