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Now showing items 1-20 of 45

ADSORPTIVE REMOVAL OF Pb2+, Cd2+, AND Cr6+ FROM AQUEOUS SOLUTION USING CACTUS OPUNTIA

Girma Abebe Bedo; (PhD) EndaleTeju; (PhD) DeribachewuBekana (Haramaya University, 2024-12)

Industrial processes regularly discharge harmful metal compounds into the environment. Even in low quantities, hazardous metals in the environment can affect humans and other creatures. Toxic metals cannot breakdown into ...
AMBERLITE IRA 67 CATALYZED DARZENS REACTION: SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDY OF NOVEL 3-SUBSTITUTED BENZYL-2-OXIRANES

gure jibat, Gamada; babu g, Neelaiah Major Advisor (PhD); bogale, Yiheyis Co-Advisor (PhD) (Haramaya university, 2019-03)

In the present work, five novel 3-substituted benzyl-2-oxiranes were synthesized from 2chloroacethophenone and aldehydes in the presence of Amberlite IRA 67 catalyst by Darzens reaction method. The structures of the ...
CdS-ZnS/ZTP NANOCOMPOSITE FOR PHOTOCATALYTIC DEGRADATION OF MALACHITE GREEN DYE UNDER ULTRAVIOLET AND VISIBLE LIGHT IRRADIATIONS

yimer ahmed, Mohammed; taddesse, Abi Major Advisor (PhD); kebede, Tesfahun Co-Advisor (PhD) (Haramaya university, 2017-01)

Cadmium and zinc sulfide nanoparticles were synthesized by a direct precipitation method. The binary system CdS-ZnS nanocomposite was synthesized by impregnation method. Zirconium Titanium Phosphate (ZTP) was synthesized ...
CHEMICAL COMPOSITION AND EVALUATION OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES OF SEED EXTRACT OF CAESALP INIA DECAPETALA

hagos reda, Weldegiorgs; teju, Endale Major Advisor (PhD) (Haramaya university, 2016-10)

This study was undertaken to determine the chemical composition, antimicrobial and antioxidant activities of the seed oil extracted from Caesalpinia decapetala collected from Haramaya University, Eastern Ethiopia. The ...
CHEMICAL COMPOSITION AND EVALUATION OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES OF SEED OF DATURA STRAMONIUM L.

g/medhn hagos, G/rufael; teju, Endale Major Advisor (PhD) (Haramaya university, 2016-10)

This study has been conducted to determine the chemical composition as well as evaluation of antimicrobial and antioxidant activities of seed oil extracted from Datura stramonium growing in Haramaya Wereda , Eastern ...
DABCO CATALYZED SYNTHESIS OF 4-SUBSTITUTED 2-AMINO9-CHLORO-3,4-DIHYDRO-4H-PYRANO[3,2-c]QUINOLINE-3CARBONITRILES: THEIR CHARACTERIZATION AND ANTIMICROBIAL ACTIVITIES

teka kebede, Zenabu; babu g, Neelaiah Major Advisor Dr; saravanan, Muthu Co-Advisor Dr (Haramaya university, 2019-06)

A simple and efficient one-pot synthesis of fused 4-substituted 2-amino-9-chloro-3,4dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitriles (Z-1-1 to Z-1-7) has been developed via initial Knoevenagel, subsequent Michael and final ...
DETERMINATION OF LEVELS OF SELECTED HEAVY METALS IN RAW AND POWDER MILK PRODUCTS AVAILABLE IN HARAR CITY MARKETS, ETHIOPIA

Teshale Hunegnaw Yihune; (Ph.D.) Minbale Aschale; (Ph.D.) Deribachew Bekana (Haramaya University, 2022-07)

Milk is a white liquid produced by the mammary glands of mammals and used for different purposes especially for human as food. However, its contamination with heavy metals is a great problem for the required purpose. ...
DIAGNOSIS OF STUDENTS’ MISCONCEPTION ON THE CONCEPT OF ACID-BASE IN TWO SECONDARY SCHOOLS OF BISHOFTU, ETHIOPIA

KASSU BIRATU BEDASSA; Ayalew Temesgen (PhD); Yiheyis Bogale (PhD) (Haramaya University, 2023)

Acid-base chemistry is the dominant chemical reactions in the chemical industry. However, most of the high school students are considered it as difficult topic and usually they had misconception about the reaction ...
DIALYSIS MEMBRANE TUBE FILLED WITH Fe-Al-Zr TERNARY MIXED OXIDE NANOCOMPOSITE: SYNTHESIS, CHARACTERIZATION AND PHOSPHATE DESORPTION STUDY FROM ACID SOILS

bogale dibabe, Yibrehu; taddesse, Abi Major Advisor (PhD); teju, Endale Co-Advisor (PhD) (Haramaya university, 2018-06)

Phosphorus fixation with different soil components is the main problem making it less available to plants. To approximate this biological measure, a method comprising of Fe-Al-Zr mixed oxide filled DMT was developed in ...
THE EFFECT OF CONTEXT BASED-APPROACH ON TEACHING THE CONCEPT OF ACID BASE INDICATORS ON COLLEGE STUDENTS’ ACHIEVEMENT AND ATTITUDES

Temesgen, (PhD) Ayalew; Teju, (PhD) Endale (Haramaya university, 2019-12)

An approach for teaching the concept of acids bases indicators in the college students’ achievement and attitude toword fundamentals of chemistry topic. The active teaching constructive methods within the intraction of ...
HYTOCHEMICALS INVESTIGATION AND ANTIMICROBIAL EVALUATION OF Foeniculum vulgare LEAVES

seid wodi, Mohammed; dekebo, Aman Major Advisor (PhD); babu g, Neelaiah Co-Advisor (PhD) (Haramaya university, 2016-10)

All parts of Foeniculum vulgare were traditionally used as antispasmodic, aromatic, carminative, digestive, galactagogues, stomach and kidney ailment. Foeniculum vulgare (Apiaceae) leaves extract was investigated for its ...
LEVEL OF CAFFEINE IN RAW AND ROASTED COFFEE BEAN VARIETIES OF HARARGHE, ETHIOPIA

bekele seifu, Tsegaye; teju, Endale Major Advisor (PhD); tadesse, Ephriem Co-Advisor (PhD) (Haramaya university, 2018-06)

Due to the chemical compound called caffeine found in coffee bean, coffee is an important commodity culturally, commercially and economically in the world. But, unless consumed based on the recommended food intake, beside ...
LEVELS AND RISK ASSESSMENTS OF POLYCYCLIC AROMATIC HYDROCARBONS IN SURFACE DUST FROM ELECTRONICS AND ELECTRICAL MATERIALS MAINTENANCE SHOPS

Thtna Mekuriya Agazh; (PhD) Meseret Amde; (PhD) Deribachew Bekana (Haramaya University, 2023-02)

Polycyclic aromatic hydrocarbons (PAHs) are toxic organic compounds causing health related risks. They can be present in, air, surface dust and soil having natural and anthropogenic sources like incomplete combustion ...
OPTIMIZING ELECTRONIC STRUCTURE AND OPTOELECTRONIC PROPERTIES OF VINYL FUSED MONOMERIC AND OLIGOMERIC BENZOXAZOLE – A QUANTUM CHEMICAL APPROACH

Mekonnen Abera Belachew; Boobalan Maria Susai (PhD); Endal Teju (PhD) (Haramaya University, 2022-03)

In this work, an approach based on quantum chemistry the electronic structures and opto electronic properties of Vinyl fused benzoxazole with a variety of organic donor accepter materials based on vinyl fused monomeric ...
PHYTOCHEMICAL INVESTIGATION AND ANTIMICROBIAL ACTIVITIES OF CRUDE EXTRACTS OF LEAVES, STEM BARK AND ROOT BARK OF SENNA DIDYMOBOTRYA

merga feyisa, Urgecha; babu g, Neelaiah Major Advisor (PhD); teju, Endale Co-Advisor(PhD) (Haramaya university, 2019-06)

enna didymobotrya plant is known for its value in traditional medicine, It is locally known as “muka ajoftu” which is traditionally used for the treatment of various human ailments in our country. The present study was ...
PHYTOCHEMICAL INVESTIGATION AND ANTIMICROBIAL ACTIVITY OF STEM BARKCRUDE EXTRACT OF Faidherbia albida

Getahun, Yonas; Babu G., Neelaiah (PhD)_; Teju, Endale (PhD); Dekebo, Aman (PhD) (HARAMYA UNIVERSITY, 2020-12)

The present study was aimed to investigate the phytoconstituents and antimicrobial activity of stem bark crude extract of F. albida. Dried powder of plant samples were subjected to sequential extraction using petroleum ...
PHYTOCHEMICAL INVESTIGATION AND ANTIMICROBIAL ACTIVITIES OF LEAF EXTRACTS OF MOMORDICA FOETIDA

tadesse badede, Bikila; babu g, Neelaiah Major Advisor (PhD); teju, Endale Co-Advisor (PhD) (Haramaay university, 2019-02)

Natural products are sources of various biologically active chemicals. Momordica foetida is locally known as ‘Qori sinbira’ and is traditionally used for the treatment of various ailments including skin caused by smallpox, ...
PHYTOCHEMICAL INVESTIGATION AND ANTIMICROBIAL ACTIVITIES OF LEAF EXTRACTS OF RHOICISSUS TRIDENTATA

bayisaTadele, hailu; babu g, Neelaiah Major Advisor (PhD); teju, Endale Co Advisor (PhD) (Haramaya university, 2018-02)

The present study was carried out on the phytochemical screening, GC-MS analysis and antimicrobial activity of leaves extracts and crude oil of R. tridentata grown in Ethiopia. The leaf was extracted with n-hexane, ...
PHYTOCHEMICAL INVESTIGATION AND ANTIMICROBIAL ACTIVITIES OF LEAF, STEM BARK AND ROOT BARK EXTRACTS OF BERSAMA ABYSSINICA FRESEN

bekele kifle, Tadesse; babu g, Neelaiah Major Advisor (PhD); teju, Endale Co-Advisor(PhD) (Haramaya university, 2019-05)

Bersama abyssinica is locally known as “Lolchisa” in Afan Oromo and its leaf part is traditionally used for the treatment of various human ailments including, cholera, diarrhea, dysentery, mycoses, skin infection, syphilis ...
PHYTOCHEMICAL INVESTIGATION AND ANTIMICROBIAL ACTIVITY OF SEED AND LEAF EXTRACTS OF Argemone ochroleuca

g/mariam g/michael, Mehari; babu g, Neelaiah Major Advisor (PhD); teju, Endale Co-Advisor (PhD) (Haramaya university, 2018-08)

This study has been conducted to determine the chemical composition as well as phytochemical investigation and antimicrobial activity of the seed and leaf oil extracted from Argemone ochroleuca growing in Haramaya Wereda ...

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