Department of Chemical Science & Technologyhttp://hdl.handle.net/123456789/17292024-03-29T05:40:27Z2024-03-29T05:40:27ZDETERMINATION OF THE QUALITY (ESSENTIAL ELEMENTS) FOUND IN COWDUNG. OGOLA, DONALD M.Ohttp://hdl.handle.net/123456789/17562019-04-15T12:53:52Z2019-04-15T00:00:00ZDETERMINATION OF THE QUALITY (ESSENTIAL ELEMENTS) FOUND IN COWDUNG
. OGOLA, DONALD M.O
The study was aimed at determining the important elements in cow dung, which are necessary for plant growth. The samples were taken from two cattle bomas in the Ngong area and its aim was to investigate the advantages to which cow dung could have over inorganic fertilizer. The samples were taken for some chemical analysis, which involved percentage of Nitrogen ,Potassium and Phosphorous, which were recorded and graphically represented The Study showed cow dung.can be used as manure as an alternative for inorganic manure.
DIPLOMA IN APPLIED SCIENCES
2019-04-15T00:00:00ZDETERMINATION OF PRESERVATIVES (HYDROGEN PEROXIDE FORMALDEHYDE AND BORIC ACID) IN RAW AND PASTEURISED MILKNYANGOL, NEREAH ACHIENGhttp://hdl.handle.net/123456789/17552019-04-15T12:19:48Z2019-04-15T00:00:00ZDETERMINATION OF PRESERVATIVES (HYDROGEN PEROXIDE FORMALDEHYDE AND BORIC ACID) IN RAW AND PASTEURISED MILK
NYANGOL, NEREAH ACHIENG
Comparative tests were carried out on several milk samples both raw and pasteurized to determine the presence of preservatives; Hydrogen peroxide, F ormaldehycle and Boric acid and their effects on the milk constituents.
There were fourteen samples collected from different areas of production seven samples of raw milk and seven samples of pasteurized milk.
The samples were collected from areas where dairy farming is more common and large amounts of milk is produced.
DIPLOMA IN APPLIED SCIENCES
2019-04-15T00:00:00ZCOMPARATIVE STUDY OF CHEMICAL CONSTITUENTS ~ IN CEMENT FROM EAST AFRICA AND BAMBURI PORTLAND CEMENT COMPANIESNYAKWAKA, OTIENO EMMANUELhttp://hdl.handle.net/123456789/17542019-04-15T12:11:06Z2019-04-15T00:00:00ZCOMPARATIVE STUDY OF CHEMICAL CONSTITUENTS ~ IN CEMENT FROM EAST AFRICA AND BAMBURI PORTLAND CEMENT COMPANIES
NYAKWAKA, OTIENO EMMANUEL
In this project, cement samples were obtained from Bamburi and East Africa
Portland cement factories situated in Machakos district.
The cement sample were taken to the laboratory where they were analyzed. The methods employed for analysis were flame photometry, U.V spectrophotometry, gravimetry and titrimetry
Comparison of analytical results between cement samples from Bamburi and East Africa is done in the discussion. The quality of cement will depend on the quality of material used for manufacture of the product.
DIPLOMA IN APPLIED SCIENCES
2019-04-15T00:00:00ZEXTRACTION AND ANALYSIS OF ACTIVE INGREDIENTS FOR FUNGAL INHIBITION IN THE LEAVES OF Senna didymobotryaNYAATA, STANLEY OIREREhttp://hdl.handle.net/123456789/17532019-04-15T11:49:54Z2019-04-15T00:00:00ZEXTRACTION AND ANALYSIS OF ACTIVE INGREDIENTS FOR FUNGAL INHIBITION IN THE LEAVES OF Senna didymobotrya
NYAATA, STANLEY OIRERE
An Isolated fungus (Epicoccus Kaptagat) was used to investigate the effect of Senna didymobotrya on growth of fungi. The extract fractions obtained were mixed with petroleum ether and acetone in the ratio of 3: 1. This was introduced into the media (Mixture of agar and malt -ratio 1: 1 mlm) which was to be cultured together with fungus.
Senna didymobotrya extract was separated into ten fractions by thin layer chromatography. These fractions showed inhibiting properties towards fungal growth and hence no more growth for some after five weeks as shown below.
Fraction growth (cm) from the centre
1 3.05
5 3.90
7 3.80
10 2.30
Other fractions had overgrown showing that their inhibiting properties were not strong enough to overcome the growth. The only fraction that stopped this fungus from further growth was the tenth one. The fraction gave maximum inhibition in the first week (seventh fraction) if combined with the one that showed same properties in the second week (tenth fraction), maximum inhibition will be achieved as from beginning to the end. The thin layer chromatograms show that fractions with highest inhibition had a yellow colouration. This may be further studied to get the compound (yellow compound on the chromatograms) and see whether it can completely stop fungal growth on its own.
DIPLOMA IN APPLIED SCIENCES
2019-04-15T00:00:00Z