Browsing Faculty of Science & Technology (FST) by Title
Now showing items 580-599 of 4283
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Characterization of Tannin-tolerant Bacterial Isolates from East African Ruminants
(University of Nairobi, 2000-06)Several tannin-tolerant bacteria were isolated from enrichment cultures of rumen microflora of bush duiker, giraffe, Grant's gazelle, sheep, and goat, and established in medium containing crude tannin extracts or tannic ... -
Characterization of the factors influencing the differential productivity of Anopheles gambiae at larval habitats in Kisian village, western Kenya.
(School of Biological Sciences, 2011) -
Characterization of Water Hyacinth Cellulose-g-poly (Ammonium Acrylate-co-acrylic Acid)/nano-hydroxyapatite Polymer Hydrogel Composite for Potential Agricultural Application
(University of Nairobi, 2020)Polymer nano-composite was prepared by grafting partially neutralized acrylic acid onto swollen cellulose iso-lated from water hyacinth in the presence of nano-hydroxyapatite (nano-HA) usingN,N-methylene-bis-acrylamide ... -
Charcoal Production and Consumption in East Africa
(Department of Chemistry, 2003) -
Charge-state trapping at a conducting polymer-redox ion-exchanger interface - a bilayer electrode
(ElsevierDepartment of Chemisty, University of Nairobi, 1996-02)The results presented in this paper highlight the use of Amberlite, a commercial cation-exchange resin as a material for electrode modification. We also show that when a redox centre is attached to the cation-exchange ... -
The cheese mite, Tyrolichus casei Oud., as a test animal for bio-assy avermectin (Acari: Acaridae).
(University of NairobiSchool of Biological and Physical Sciences, 1989)Abstract Not Available -
Chemical analysis and in vitro UV-protection characteristics of clays traditionally used for sun protection in South Africa.
(University of NairobiDepartment of Chemistry, 2013)Clays have been used in southern Africa as photoprotectants by the indigenous people. Typically, two types of clay are used: one white in colour and the other red. In this work, the two clays were identified and characterized, ... -
Chemical bond approach to optical properties of some flash evaporated Se100 −XSbX chalcogenide alloy
(EDP Sciences, 2012)Amorphous thin films of Se100−XSbX (X = 1, 5, 10, 15 and 20) were synthesized by flash evaporation of the premelt quenched bulk samples. The optical properties were investigated from spectrophotometric measurements in the ... -
Chemical Characteristics, with particular reference to phosphorus, of the rivers draining into Lake Naivasha, Kenya
(School of Biological Sciences, 2002) -
Chemical Communication in the Honey Bee Scarab Pest Oplostomus haroldi : Role of ( Z )-9-Pentacosene
(University of Nairobi, 2012)Oplostomus haroldi Witte belongs to a unique genus of afro-tropical scarabs that have associations with honey bee colonies, from which they derive vital nutrients. Although the attributes of the honey bee nest impose ... -
Chemical composition and antibacterial activity of essential oils of tagetes minuta (asteraceae) against selected plant pathogenic bacteria
(University of Nairobi, 2016)The objective of this study was to determine the chemical composition and antibacterial activity of essential oils (EOs) of Tagetes minuta against three phytopathogenic bacteria Pseudomonas savastanoi pv. phaseolicola, ... -
Chemical Composition And Antifungal Activity Of Essential Oils Of Tagetes Minuta (Asteraceae) Against Selected Phytopathogenic Fungi
(University of Nairobi, 2016)Over the years, management of plant pathogenic fungi has primarily relied on the use of synthetic chemical fungicides. However, in the recent past, exploration for biologically active compounds from plants with the aim ... -
Chemical composition and antifungal activity of essential oils of tagetes minuta (asteraceae) against selected phytopathogenic fungi
(University of Nairobi, 2016)The objective of this study was to determine the chemical composition and antibacterial activity of essential oils (EOs) of Tagetes minuta against three phytopathogenic bacteria Pseudomonas savastanoi pv. phaseolicola, ... -
Chemical composition and antimicrobial activity of the essential oil of Ocimum gratissimum L. growing in Eastern Kenya
(2007)Hydro-distilled volatile oils from the leaves of Ocimum gratissimum L. (Lamiaceae) from Meru district in Eastern Kenya were analysed by gas chromatography-mass spectrometry (GC-MS) and also evaluated for antimicrobial ... -
Chemical Constituents And Biological Activities Of Zanthoxylum Usambarense
(University of Nairobi, 2002-02)Bioassay-guided fractionation of the dichloromethane extracts of the roots and the bark of Zanthoxylum usambarense led to the isolation of two physiologically active compounds, i.e. canthin-6-one 1 (fungicide) and pellitorine ... -
Chemical Energy Sources Transformations by Remote Experiment
(2014)The paper describes the first experience with the set up, functioning and data evaluation of the remote experiment “Energy transformation” accessible via Internet (http://remotelab10.truni.sk) as a part of the e-laboratory ... -
Chemical speciation and bioavailability index of cadmium for selected tropical soils in Kenya
(Department of Chemestry, School of Physical Sciences, University of Nairobi, 1998-12-10)Determination of various chemical forms of a metal in soils is important to evaluate its mobility and bioavailability. Little is known on the chemistry of Cd species of variable charge soils in the tropics which account ... -
Chemical studies of Kenyan Tea Seeds: Physical and Chemical Characteristics of the kernel Oil", TEA, (1), 23-28
(University of NairobiCollege of biological and physical science, 1985) -
The Chemical Systematics Of The Rutaceae, Subfamily Toddalioideae In Africa
(University of NairobiDepartment of Chemestry, 1988)A recent investigation of five Ethiopian species of the Rutaceae subfamily Toddalioideae, Teclea nobilis, T. simplicifolia, T. borenensis, Vepris dainellii and V. glomerata has led to the identification of alkaloids of the ... -
Chemistry and Biological Activity of Zanthoxyllum usambarense
(University of NairobiDepartment of Chemestry, 1999)