Browsing Faculty of Science & Technology (FST) by Title
Now showing items 866-885 of 4283
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Current status of insecticide resistance among malaria vectors in Kenya.
(University of Nairobi, 2017)BACKGROUND: Insecticide resistance has emerged as one of the major challenges facing National Malaria Control Programmes in Africa. A well-coordinated national database on insecticide resistance (IRBase) can facilitate ... -
Current status of utilization and conservation of medicinal plants in Africa south of the Sahara
(School of Biological Sciences, 1993) -
Current Transport in TiO2/In(OH)xSy/Pb(OH)xSy/PEDOT:PSS eta Solar Cell
(Centre For Biotechnology & Bioinformatics Publications, 2009) -
Curvature tensors in riemannian manifold—II
(School of Mathematics, University of Nairobi, 1974)In a recent paper author and Mishra [1] have studied the recurrent properties of conformal curvature tensor, conharmonic curvature tensor, concircular curvature tensor and projective curvature tensor in a Riemannian manifold. ... -
Curves in Hilbert Spaces with non-stationary increments.
(University of Nairobi.School of Mathematics, 1989) -
Cuticular lesions: a non-infectious integumental disease of Glossina species
(University of Nairobi.School of Biological Sciences, 1981-12)Purified suspensions of macerated cuticular lesions from the insectary-reared tsetse Glossina morsitans morsitans were applied on laboratory-reared newly emerged teneral tsetse by three pathways: topical application on the ... -
The cyclobuta[b]quinoline alkaloid cyclomegistine from Teclea gerrardii I.Verd. (Toddalioideae: Rutaceae)
(2009)The chemical constituents of the stem bark from a cultivated specimen of T. gerrardii in Durban, KwaZulu-Natal Province, and of the fruit of the same species collected from the Lowveld National Botanic Gardens, Nelspruit, ... -
Cytogenetic effects of the food preservatives — Sodium benzoate and sodium sulphite on Vicia faba root meristems
(1982-11)Sodium sulphite and sodium benzoate induce in Vicia faba root meristems: (1) dose-dependent reduction in mitotic figures, (2) intact and severed anaphase bridges, (3) premature chromosome condensation heading to pycnofic ... -
Cytogenetics of a new cytotype of African Mus (subgenus Nannomys) minutoides (Rodentia, Muridae) from Kenya: C- and G- banding and distribution of (TTAGGG)n telomeric sequences
(College of Biological and Physical Sciences, University of Nairobi, 2006) -
Cytotoxic Alkaloids From the Root of Zanthoxylum Paracanthum (Mildbr) Kokwaro
(University of Nairobi, 2022)Chemical investigation of the root of Zanthoxylum paracanthum afforded 1 new alkamide derivative, (2E,4E)-6-oxo-N-isobutyldeca-2,4-dienamide (1) together with 10 known congeners including one phenolic amide (2), four ... -
Cytotoxic and antioxidant flemingins g-p from the leaves of flemingia grahamiana
(University of Nairobi, 2014)The known flemingins A-C (1-3) and nine new chalcones, named flemingins G-O (4-12), along with deoxyhomoflemingin (13) and emodin (14) were isolated from a leaf extract of Flemingia grahamiana. The isolated chalcones were ... -
Cytotoxic benzylbenzofuran derivatives from Dorstenia kameruniana
(University of Nairobi, 2018)Chromatographic separation of the extract of the roots of Dorstenia kameruniana (family Moraceae) led to the isolation of three new benzylbenzofuran derivatives, 2-(p-hydroxybenzyl)benzofuran-6-ol (1), 2-(p-hydroxybenzyl ... -
Cytotoxic Flavonoids From the Seeds of Dracaena Steudneri Engl Against Leukemia Cancer Cell Lines
(University of Nairobi, 2022)Background: Leukemia is the most common type of childhood cancer. Numerous flavonoids isolated from plants have been reported as potential chemotherapeutic agents against malignant growth while taking care of healthy c ... -
Cytotoxic flavonoids from two Lonchocarpus species.
(University of Nairobi, 2018)A new isoflavone, 4'-prenyloxyvigvexin A (1) and a new pterocarpan, (6aR,11aR)-3,8-dimethoxybitucarpin B (2) were isolated from the leaves of Lonchocarpus bussei and the stem bark of Lonchocarpus eriocalyx, respectively. ... -
Cytotoxic lupane-type triterpenoids from Acacia mellifera.
(2004)One new and eight previously described lupane-type metabolites were isolated for the first time from Acacia mellifera (Leguminosae). Based on spectral analyses, the structure of the new compound was elucidated as ... -
Cytotoxic Quinones from the Roots of Aloe dawei.
(University of Nairobi, 2014-03-17)Seven naphthoquinones and nine anthraquinones were isolated from the roots of Aloe dawei by chromatographic separation. The purified metabolites were identified by NMR and MS analyses. Out of the sixteen quinones, ... -
Cytotoxicity Of Fagaramide Derivative And Canthin-6-one From Zanthoxylum (Rutaceae) Species Against Multidrug Resistant Leukemia Cells
(University of Nairobi, 2019)In our continuous search for cytotoxic compounds from the genus Zanthoxylum, chromatographic separation of the MeOH/CH2Cl2 (1:1) extract of Z. chalybeum yielded one new alkamide; 4-(isoprenyloxy)-3-methoxy-3,4-deoxymethy ... -
Cytotoxicity Of Isoflavones And Biflavonoids From Ormocarpum Kirkii Towards Multi-factorial Drug Resistant Cancer
(University of Nairobi, 2019)Background While incidences of cancer are continuously increasing, drug resistance of malignant cells is observed towards almost all pharmaceuticals. Several isoflavonoids and flavonoids are known for their cytotoxicity ... -
Cytotoxicity of Plumbagin, Rapanone and 12 other naturally occurring Quinones from Kenyan Flora towards human carcinoma cells.
(University of Nairobi, 2016)BACKGROUND: Cancer is a major public health concern globally and chemotherapy remains the principal mode of the treatment of various malignant diseases. METHODS: This study was designed to investigate the cytotoxicity ... -
Dark Current Voltage (I-V) Characteristics of a Commercialized Dye-Sensitized Solar Module Ideal for use in the Tropics
(University of nairobicollege of biological and physical science, 2012)