Browsing Faculty of Science & Technology (FST) by Title
Now showing items 3966-3985 of 4283
-
Thidiazuron-induced somatic embryogenesis and shoot regeneration in cotyledon explants Of melia volkensii gürke
(University of Nairobi, 2014) -
Three chalconoids and a pterocarpene from the roots of tephrosia aequilata.
(University of Nairobi, 2017)In our search for new antiplasmodial agents, the CH₂Cl₂/CH₃OH (1:1) extract of the roots of Tephrosia aequilata was investigated, and observed to cause 100% mortality of the chloroquine-sensitive (3D7) strain of Plasmodium ... -
The Three Dimensional Temperature Field over Africa
(Department of Metereology, 1984) -
Three Dimeric Anthracene Derivatives From Bulbine Abyssinica.
(University of NairobiDepartment of Chemestry, 2005)From the fruits of Bulbine abyssinica three new dimeric anthracene derivatives, (P)-8,9,10,80-tetrahydroxy-3,30-dimethyl[10,70-bianthracene]-1,4,90,100-tetraone (trivial name abyquinone A), (10R)-1,4,8,10,80-pentahydroxy ... -
Three dimeric anthracene derivatives from the fruits of Bulbine abyssinica. Tetrahedron 61, 2667
(Department of Chemistry, 2005) -
Three ent-trachylobane diterpenes from the leaf exudates of Psiadia punctulata
(ElsevierDepartment of Chemistry, University of Nairobi, 2006-07)Three ent-trachylobane diterpenes have been isolated from the leaf exudates of Psiadia punctulata and characterised as 6α,17,19-ent-trachylobantriol; 2α,18,19-ent-trachylobantriol; and 2β,6α,18,19-ent-trachylobantetraol. ... -
Three isoflav-3-enes and a 2-arylbenzofuran from the root bark of Erythrina burttii
(University of NairobiDepartment of Chemistry, University of Nairobi, 2002-02)From the root bark of Erythrina burttii three isoflav-3-enes, 7,4′-dihydroxy-2′-methoxy-6-(1″,1″-dimethylallyl)isoflav-3-ene (trivial name, burttinol-A), 4′-hydroxy-2′-methoxy-2″,2″-dimethylpyrano[5″,6″:8,7]isoflav-3-ene ... -
Three steroidal alkaloids from Buxus hildebrandtii
(University of NairobiDepartment of Chemistry, Addis Ababa UniversityCollege of Biological and Physical Sciences,University of NairobiResearch Institute of Chemistry, University of Karachi, 1990)From the leaves of Buxus hildebrandtii three new steroidal alkaloids have been isolated and their structures determined by spectroscopic analysis. The following derived names have been suggested for these new alkaloids: ... -
Three-stage group screening with errors in observations
(Taylor & Francis, 1985)This paper examines the performance of three-stage group screening in terms of the expected number of runs and the expected number of incorrect decisions. A few tables are given at the end to provide the reader with a ... -
Three-stage group screening with unequal group sizes and with errors in observations
(1987)In this paper three-stage group screening in which group-factors contain differing number of factors is discussed. A procedure for grouping the factors in the absence of concrete prior information is described. Formulas ... -
Threshold change in forest understory vegetation as a result of selective fuelwood extraction in Nairobi, Kenya
(College of Physical and Biological Sciences, 2011)We examined whether heavy fuelwood collection can cause threshold change in understory forest community and evaluated how selective wood extraction might lead to delayed forest recovery in an urban forest of Nairobi, Kenya. ... -
Ticks and tick-borne parasites associated with indigenous cattle in Didtuyura Ranch, southern Ethiopia
(University of Nairobi.School of Biological Sciences, 1998)Tick populations were monitored between October 1991 and September 1992 at monthly intervals on 10 Boran (Bos indicus) heifers at Didtuyura ranch, Yabelo district, Ethiopia. Twelve different tick species in four genera ... -
Time for in situ renaissance.
(University of Nairobi, 2015-08-14) -
Time Lag between Deforestation and Bird Extinction in Tropical Forest Fragments
(University of Nairobi, 1999)ropical forests are becoming increasingly fragmented, threatening the survival of the species that depend on them. Small, isolated forest fragments will lose some of their original species. What is uncertain is how long ... -
Time Variability of the Surface Wind Power Densities over Kenya. International Journal of Global Energy Issues, Vol. 2, No. 2, pp 133-140
(Department of Meteorology, 1990) -
Time-enabled Two-dimensional Digital Cadastre: Case Of The Kenyan Cadastre
(Universty of Nairobi, 2014)Research in recent years has shown the importance of adding time, also known as the fourth dimension, into the existing 3D cadastral registration systems. This enables recording of history thus capable of supporting past ... -
Titania Nanotubes Prepared by Synthesis Method for Dye Sensitized Electrochemical Solar Cells
(University of Nairobi, KenyaUppsala University, Department of Physical Chemistry, Uppsala, Sweden, 2008)The area of nanostructured materials for dye sensitized solar cells has gained great interest especially after a breakthrough by Gratzel and coworkers in developing a solar cell from nanostructured oxide of titania ... -
To be or not to be a species: use of reproductive isolation experiments and genetic analysis to clarify the taxonomic status of two Busseola (Lepidopter a: Noctuidae) species in Kenya
(Taylor & Fr ancis, 2013)Phylogenetic analysis combined with chemical ecology can contribute to the delimitation of closely related insect species, particularly in Lepidoptera. In this study, the taxonomic status of a species in the genus ... -
To compute is not to think
(Department of Physics, University of Nairobi, 1994)Do you need some information? Push a button and the machine will answer! Amendments to this ridiculous way of thinking are proposed. The roles of adaptation and positive information utility in building a self-organizing ... -
Tolerance of Kenyan Schistosoma mansoni to oxamniquine.
(University of Nairobi,Department of Zoology, 1987)Although 30 mg/kg oxamniquine produced high levels (85.5 to 99.5%) of egg reduction in Kenyan children infected with Schistosoma mansoni after a single oral treatment, cure rates from children at Mwea in Kirinyaga district ...