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Pyrazole, isoxazoline and bypyrimidine derivatives from polygonum senegalense and psiadia punctulata flavonoids and their anti- microbial activities
(University of Nairobi, 2017)
Currently, researchers have given special attention to the synthesis of hetero
cyclic compounds with nitrogen and oxygen five in five or six
membered
ring systems. This is mainly due to their wide range of biological ...
Semi-synthetic pyrazoline derivatives from polygonum senegalense chalcones and their anti-microbial activities
(University of Nairobi, 2017)
This paper describes the semi-synthesis and anti-microbial activity of novel
pyrazoline derivatives of
Polygonum senegalense
chalcones. The study
was carried out on the understanding that heterocycles ...
Using fuzzy cognitive maps in modelling and representing weather lore for seasonal weather forecasting over east and Southern Africa
(University of Nairobi, 2017)
The creation of scientific weather forecasts is troubled by many technological challenges while their utilization is dismal. Consequently, the majority of small-scale farmers in Africa continue to consult weather lore to ...
A nested multivariate chemometrics based calibration strategy for direct trace biometal analysis in soft tissue utilizing Energy Dispersive X-Ray Fluorescence (EDXRF) and scattering spectrometry.
(University of Nairobi, 2017)
Compton scatter-modulated fluorescence and multivariate chemometric (artificial neural network (ANN) and principal component regression (PCR)) calibration strategy was explored for direct rapid trace biometals (Mn, Fe, Cu, ...
Equilibrium and Kinetic Studies of Cu(Ii) Removal from Aqueous Solutions Using a Kenyan Micaceous Mineral.
(University of Nairobi, 2017)
Copper (II) sorption on a Kenyan micaceous mineral (Mica-K) was studied in the batch mode. The effects
of different experimental parameters such as; initial concentration, contact time, sorbent dose, pH,
particle size, ...
Firefly Algorithm based Power Control in Wireless TV White Space Network
(University of Nairobi, 2017)
Spectrum occupancy assessments done in USA, Spain, Singapore, New Zealand and Germany [1] and UK [2], indicate that a large portion of spectrum assigned to primary users (PUs) is underutilized. Spectrum is considered a ...
Mobile learning: content format and packaging for effective teaching and learning in a learner-centered pedagogy
(University of Nairobi, 2017)
When an instructor is able to identify, develop and apply appropriate digital media content that motivates learners and encourages them to learn, the process of learning is empowered. This study has identified multimedia ...
Characteristics of Aedes aegypti adult mosquitoes in rural and urban areas of western and coastal Kenya.
(University of Nairobi, 2017)
Aedes aegypti is the main vector for yellow fever, dengue, chikungunya and Zika viruses. Recent outbreaks of dengue and chikungunya have been reported in Kenya. Presence and abundance of this vector is associated with the ...
Diterpenoids from the roots of Croton dichogamus Pax.
(University of Nairobi, 2017-12)
Four previously undescribed diterpenoids including two crotofolanes, crotodichogamoin A and B, and two halimanes, crothalimene A and B, a new sesquiterpenoid, and fifteen previously reported compounds, including the ...
Target-similarity search using Plasmodium falciparum proteome identifies approved drugs with anti-malarial activity and their possible targets.
(University of Nairobi, 2017)
Malaria causes about half a million deaths annually, with Plasmodium falciparum being responsible for 90% of all the cases. Recent reports on artemisinin resistance in Southeast Asia warrant urgent discovery of novel drugs ...