Browsing Faculty of Science & Technology (FST) by Title
Now showing items 4096-4115 of 4283
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Two unusual rotenoid derivatives, 7a-O-methyl-12a-hydroxydeguelol and spiro-13-homo-13-oxaelliptone, from the seeds of Derris trifoliata
(Department of Zoology, University of Nairobi,Department of Chemistry, University of NairobiInstitut für Chemie, Universität Potsdam, P.O. Box 601553, D-14415 Potsdam, Germany, 2006-05)The crude methanol extract of the seeds of Derris trifoliata showed potent and dose dependent larvicidal activity against the 2nd instar larvae of Aedes aegypti. From this extract two unusual rotenoid derivatives, a ... -
Typhlodromalus aripode leon (acari: phytoseiidae) development and reproduction on major cassava pests at different temperatures and humidities: an indication of enhanced mite resilience
(2014)Both prey type and abiotic conditions limit performance of phytoseiid predators. The exotic predatory mite, Typhlodromalus aripo developed and reproduced when maintained on eggs and active stages of the cassava ... -
Ultrasensitive detection of plant hormone abscisic acid-based surface-enhanced Raman spectroscopy aptamer sensor
(University of Nairobi, 2022-03)Abscisic acid (ABA), as the most common plant hormone in the growth of wheat, can greatly affect the yield when its levels deviate from normal. Therefore, highly sensitive and selective detection of this hormone is greatly ... -
Ultrasensitive immunosensor for multiplex detection of cancer biomarkers carcinoembryonic antigen (CEA) and yamaguchi sarcoma viral oncogene homolog 1 (YES1) based on eco-friendly synthesized gold nanoparticles
(University of Nairobi, 2023)Cancer is one of the most extensive diseases with the highest mortality rate, accounting for almost 10 million deaths in 2020. The most common cancers are breast, lung, colon and rectum and prostate cancers. Of these, lung ... -
Ultrasonic attenuation in Kenyan clay refractories
(Department of Physics, University of Nairobi,, 1999)Ultrasonic attenuation in clay refractories fabricated under different processing parameters has been measured. It was established that refractory clay samples with high compaction efficiencies (CE) were less attenuating ... -
Unclear association between levels of Plasmodium falciparum lactate dehydrogenase (PfLDH) in saliva of malaria patients and blood parasitaemia: diagnostic implications?
(University of Nairobi, 2018)The use of saliva in diagnosis of infectious diseases is an attractive alternative to procedures that involve blood drawing. It promises to reduce risks associated with accidental needle pricks and improve patient compliance ... -
Undergraduate chemistry education in Africa.
(Department of Chemistry, 1999) -
Understanding maize/beans intercropping yield distributions from water conservation measures in a hedged agroforestry system in semi-arid Laikipia District, Kenya
(University of Nairobi.Department of Meteorology, 2007) -
Understanding Physical Activity Behavior of Type 2 Diabetics Using the Theory of Planned Behavior and Structural Equation Modeling
(world Academy of Sciences, 2010)Understanding patient factors related to physical activity behavior is important in th e management of Type 2 Diabetes. This study applied the Theory of Planned Behavior model to understand physical activity behavior ... -
Understanding the Impacts of Climate Change in the Tana River Basin, Kenya
(University of Nairobi, 2018)In the Tana River Basin in Kenya, six Regional Circulation Models (RCMs) simulating two Representative Concentration Pathways (RCPs) (i.e., 4.5 and 8.5) were used as input to the Soil and Water Assessment Tool (SWAT) model ... -
Understanding the long-lasting attraction of malaria mosquitoes to odor baits.
(University of Nairobi, 2015)The use of odor baits for surveillance and control of malaria mosquitoes requires robust dispensing tools. In this study, the residual activity of a synthetic mosquito attractant blend dispensed from nylon or low density ... -
Understanding “Foregoing” Behavior at the Base of the Pyramid in Kenya
(School of Computing and Informatics, University of Nairobi, 2013) -
Unification of Gravitation and Electromagnetism in a Relativistic Version of Finslerian Geometry
(University of NairobiDepartment of Physics, 2002)A theory of gravitation is considered in a relativistic version of Finslerian geometry. It is found that both the geodesic equations and the Finslerian analogue of the Einstein\'s field equations have terms that involve ... -
Unified multidimensional microcolumn chromatography
(Department of Chemistry, 1989) -
UNIT 11.14 Flow Cytometric Assessment of Drug Susceptibility in Leishmania infantum Promastigotes
(2001)Flow cytometry can be a valuable tool for parasitology in studies of parasite-drug interaction and cellular toxicity. This unit presents protocols for assessment of Leishmania promastigote proliferation, viability, and ... -
Unitary Equivalence of the Unilateral Shift
(2008)Shifts (including the simple unilateral and bilateral ones) are a basic tool in operator theory. The unilateral shift in particular, has many curious properties, both algebraic and analytic. The techniques for discovering ...