Browsing Faculty of Science & Technology (FST) by Title
Now showing items 2265-2284 of 4283
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Large-scale Irregularities In The Equatorial Ionosphere
(University of Nairobi, 1975-04)Variations in the Faraday fading period of the 40 MHz signal from satellite BE-B have been used to study large-scale irregularities in the equatorial ionosphere. It is found that the irregularities have sizes ranging from ... -
Large-scale variation in lithospheric structure along and across the Kenya rift.
(University of NairobiSchool of Biological and Physical Sciences, 1991)Abstract Not Available -
Larval Ecology Of Malaria Vectors In Western Kenya
(University of Nairobi, 1984) -
Larval habitats of common Culicoides Latreille (Diptera, Ceratopogonidae) in Kenya
(Department of Entomology, University of Nairobi, Kenya, 1976)The larval habitats of Culicoides species were determined by examining a total of 1 476 samples collected from different ecological environments in various parts of Kenya. Immature stages were collected from suspected ... -
Larvicidal Activities Of Extracts And Rotenoids From Millettia Usaramensis Subspecies Usaramensis On Aedes Aegypti (Linnaeus, 1762) (Diptera: Culicidae)
(University of Nairobi, 2014)The dichloromethane/methanol (1:1) extract of the stem bark of Millettia usaramensis subspecies usaramensis was tested for its larvicidal activity against the 4th instar Aedes aegypti larvae and demonstrated activity with ... -
Larvicidal Activities Of The Stem Bark Extract And Rotenoids Of Millettia Usaramensis Subspecies Usaramensis On Aedes Aegypti L. (diptera: Culicidae)
(University of Nairobi, 2014)The dichloromethane/methanol (1:1) extract of the stem bark of Millettia usaramensis subspecies usaramensis was tested for its larvicidal activity against the 4th instar Aedes aegypti larvae and demonstrated activity with ... -
Larvicidal activity of a granular formulation of a Melia volkensii (Gurke) acetone extract against Aedes aegypti L
(Department of Zoology, University of Nairobi, 1998)A method of formulating granules from an acetone extract fraction of the fruit of Melia volkensii, a Kenyan tree known to possess insecticidal properties, was developed. The granules were tested for toxicity to third and ... -
Larvicidal benzoquinone from Embelia schimperi
(Department of Chemistry, 2004)Chromatographic analysis of air-dried berries of Embelia schimperi led to the isolation of methyl vilangin (1), which was characterized on the basis of physical and spectroscopic data. The compound was found to be lethal ... -
Laser applications of exact expressions for hole subband effective mass in arbitrarily shaped quantum wells grown along arbitrary crystal axes
(University of NairobiCollege of biological and physical science, 1995) -
Laser induced breakdown spectroscopy and characterization of environmental matrices utilizing multivariate chemometrics
(2013)We exploited multivariate chemometric methods to reduce the spectral complexity and to retrieve trace heavy metal analyte concentration signatures directly from the LlBS spectra as well as. to extract their latent char ... -
Late Cenozoic fluvial dynamics of the River Tana, Kenya, an uplift dominated record
(University of NairobiDepartment of Geology, 2007-11)The Late Cenozoic development of the River Tana in Kenya has been reconstructed for its central reach near its confluence with the River Mutonga, which drains the Mount Kenya region. Age control for this system has been ... -
Late Holocene sedimentology and palaeoenvironment of Kiluli Swamp, Mount Kenya
(2003)Kiluli Swamp is an extensive valley swamp near the lower limit of the montane forest on the eastern slopes of Mount Kenya, East Africa. The swamp is fed by a small spring on the northeastern margin, and the water table ... -
Late Holocene variations from Lake Rutundu, mount Kenya
(Department of Geology, University of Nairobi, 2013) -
Late Pleistocene-Holocene rise and collapse of Lake Suguta, northern Kenya Rift.
(2009)The Late Pleistocene to Middle Holocene African Humid Period (AHP) was characterized by dramatic hydrologic fluctuations in the tropics. A better knowledge of the timing, spatial extent, and magnitude of these hydrological ... -
The late Proterozoic Yatta Shear Zone: A possible lateral ramp extending across the Kenya Rift
(1994)On the basis of a test experiment in 1985 (KRISP 85) an integrated seismic-refraction/ teleseismic survey (KRISP 90) was undertaken to study the deep structure beneath the Kenya rift down to depths of NO-150 km. This ... -
Late quaternary climatic variability in intertropical Africa
(Springer,Department of Geology University of NairobiSchool of Ocean Sciences University of Wales BangorDepartment of Geography University of Wales SwanseaGeological Institute University of BergenDepartment of Geography Lancaster University, 2004) -
Late Quaternary environmental change in southern Africa
(bDepartment of Geology, University of Nairobi, Nairobi,Climatology Researcl1 Group. University of the Witwatersrand., 2001)Over the last 400 000 years, the pattern of climatic change in the southern African sector of the southern hemisphere is shown to have followed in broad outline that defined by the Vostock ice-core sequence. Regional-local ... -
Late Quaternary glacial-interglacial cycle of climatic and environmental change on Mount Kenya, Kenya
(University of NairobiDepartment of Geology, 1999-10)Sediments from Sacred Lake and Lake Nkunga on the northeastern flank of Mount Kenya have a sequential palaeoclimatic and palæoenvironmental record covering most of the Late Quaternary period: from ca 115 to 0 ka. Most of ... -
Late Quaternary primary tephras in Sacred Lake sediments, northeast Mount Kenya, Kenya
(University of NairobiDepartment of Geology, 2000-05)In this paper, a sequence of five Late Quaternary tephras occurring as discrete, well-preserved horizons in lake sediments on the northeastern flank of Mount Kenya are characterised and their ages determined by a combination ...