Browsing Faculty of Science & Technology (FST) by Title
Now showing items 4074-4093 of 4283
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Trypanosoma Infection Rates in Glossina Species in Mtito Andei Division, Makueni County, Kenya.
(University of Nairobi, 2015-11)African Animal Trypanosomiasis (AAT) transmitted cyclically by tsetse fly (Glossina spp.) is a major obstacle to livestock production in the tropical parts of Africa. The objective of this study was to determine the infection ... -
Trypanosome-induced ovarian dysfunction. Evidence of higher residual fertility in trypanotolerant small East African goats
(University of Nairobi.School of Biological Sciences, 1988-09)Changes in the length of oestrous cycles, plasma progesterone and oestradiol-17 beta levels were monitored for 6 months in Trypanosoma congolense-infected normocyclic small East African goats obtained from three tsetse-endemic ... -
Tryptophan-like and humic-like fluorophores are extracellular in groundwater: implications as real-time faecal indicators
(University of Nairobi, 2020)Fluorescent natural organic matter at tryptophan-like (TLF) and humic-like fluorescence (HLF) peaks is associated with the presence and enumeration of faecal indicator bacteria in groundwater. We hypothesise, however, that ... -
Tsetse and other biting fly responses to Nzi traps baited with octenol, phenols and acetone
(School of Biological Sciences, 2007)Octenol (1-octen-3-ol), acetone, 4-methylphenol, 3-n-propylphenol, and other potential attractants (human urine, stable fly faeces), as well as guiacol, creosol (potential repellents), were tested as baits for biting flies ... -
Two isoflavanones from the stem bark of Erythrina sacleuxii
(University of NairobiDepartment of Chemistry, University of Nairobi, 2000-11)From the stem bark of Erythrina sacleuxii two new isoflavanones, (R)-5,7-dihydroxy-2′,4′,5′-trimethoxyisoflavanone (trivial name, (R)-2,3-dihydro-7-demethylrobustigenin) and (R)-5-hydroxy-2′,4′,5′-trimethoxy-2″,2″-dimeth ... -
Two Lignans Derivatives and Two Fusicoccane Diterpenoids From the Whole Plant of Hypoestes Verticillaris (L.f.) Sol. Ex Roem. & Schult
(University of Nairobi, 2019)Bioassay-guided screening of Hypoestes verticillaris whole plant CH2Cl2:MeOH (1:1) extract for anti-plasmodial activity yielded four new compounds: two lignans 2, 6-dimethoxysavinin (1), 2,6-dimethoxy-(7E)-7,8-dehydrohel ... -
Two New Antiprotozoal 5-Methylcoumarins from Vernonia brachycalyx
(Department of Chemistry, 1997)Two new isomeric 5-methylcoumarins, 2‘-epicycloisobrachycoumarinone epoxide (1) and cycloisobrachycoumarinone epoxide (2), have been isolated from the roots of Vernonia brachycalyx by means of bioactivity-guided fractionation. ... -
Two new flavonoids from Dracaena usambarensis Engl.
(University of Nairobi, 2020)Investigations of the root extract of Dracaena usambarensis Engl. for anticancer principles led to the characterization of one new homoisoflavonoid, (3S)-3,4ʹ,5,6-tetrahydroxy-7-methoxyhomoisoflavanone (1) and a new ... -
Two new Graminicolous Meliolaeae from Kenya
(Department of Botany, College of Biological and Physical Sciences, University of Nairobi, 2001) -
Two new isoflavones from millettia dura
(Department of Chemistry, University of Nairobi,, 2010)The genus Millettia belongs to the family Fabaceae. It is represented by more than 200 species and is, found widely distributed in tropical Africa, Australia and Asia. Previous chemical investigationsof a number" of ... -
Two new labdanes from aframomum sulcatum
(Department of Chemistry, University of Dschang,Department of Chemistry, The University of GlasgowDepartment of Organic Chemistry 2, Chemical Center, Lund University,, 2000) -
Two new species of Meliola from Kenya
(1999)Meliola periplocae and M warburgiae are described and illustrated in this study from collections on Periploca linearifolia and Warburgia ugandensis respectively. Periploca is a new host genus for Meliola, and M warburgiae ... -
Two new species of Plectranthus L
(University of NairobiCollege of biological and physical science, 2000)Vegetative propagation studies were carried out at Maseno University, Kenya in the year 2004 and 2005 using stem cuttings on three endangered indigenous tree species namely Asystasia schimperi, Carissa edulis and Toddalia ... -
Two novel lignans derivatives and two fusicoccane diterpenoids from whole plant of Hypoestes verticillaris (L.f.) Sol. ex Roem. & Schult
(University of Nairobi, 2019)Bioassay-guided screening of Hypoestes verticillaris whole plant CH2Cl2:MeOH (1:1) extract for anti-plasmodial activity yielded four new compounds: two lignans 2, 6-dimethoxysavinin (1), 2,6-dimethoxy-(7E)-7,8-dehydrohel ... -
Two phosphoglycoproteins (phosvitins) from Kinixys erosa oocytes
(Department of Biochemistry, University of Nairobi, 1992)1. Two phosphoproteins have been isolated from maturing egg yolks of Kinixys erosa by a combination of gel filtration and anion exchange chromatography. 2. The two proteins, TEYP-2 and TEYP-3, have View the MathML ... -
Two polymethoxylated flavonoids with antioxidant activities and a rearranged clerodane diterpenoid from the leaf exudates of Microglossa pyrifolia
(University of Nairobi, 2014-12)Three novel compounds; two polymethoxylated flavonoids, 5,7,4′-trihydroxy-3,8,3′,5′-tetramethoxyflavone (1), 5,7,3′-trihydroxy-3,8,4′,5′-trimethoxyflavone (2), and a clerodane diterpenoid; 8-acetoxyisochiliolide lactone ... -
Two prenylated flavonoids from the stem bark of Erythrina burttii
(Department of Chemistry, 2003-06)From the stem bark of Erythrina burttii, a new isoflavone, 5,2′,4′-trihydroxy-7-methoxy-6-(3-methylbut-2-enyl)isoflavone (trivial name, 7-O-methylluteone) and a new flavanone, 5,7-dihydroxy-4′-methoxy-3′-(3-methylbutadie ... -
Two relaxation time model for orientational motion of molecules in a gas reservoir
(Department of Physics, University of Nairobi, Nairobi, Kenya, 1976)A classical treatment of a two relaxation time model is presented, and it is shown from a solution of the general initial value problem that the Debye relaxation rate is equal to the rate of angular momentum relaxation. -
Two Stage Interest Rate Pass Through In Kenya
(School of Business, University of NairobiSchool of Mathematics, University of Nairobi, 2013)Interest rate volatility is a major concern for emerging economies due to its crippling effects on the economy. There is wide ranging disconsensus on the effectiveness and speed of various tools. This paper proposes ...
