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Now showing items 1361-1370 of 1383
Electrophoretic Deposition And Characterization Of TiO2/Nb2O5 Composite Thin Films For Dye Sensitized Solar Cells
(University of Nairobi, 2018)
In this study, Electrophoretic Deposition (EPD) technique was used to fabricate TiO2/Nb2O5 composite
thin films on FTO coated glass for application as photoelectrodes in Dye Sensitized Solar Cells (DSSC). A
TiO2/Nb2O5 ...
Isoflavones and Rotenoids from the Leaves of Millettia oblata ssp. teitensis
(University of Nairobi, 2017)
: A new isoflavone, 8-prenylmilldrone (1), and four
new rotenoids, oblarotenoids A−D (2−5), along with nine known
compounds (6−14), were isolated from the CH2Cl2/CH3OH
(1:1) extract of the leaves of Millettia oblata ...
Naphthalene Derivatives from the Roots of Pentas parvifolia and Pentas bussei
(University of Nairobi, 2016)
The phytochemical investigation of the CH2Cl2/MeOH (1:1) extract of the roots of Pentas parvifolia led to the isolation of three new naphthalenes, parvinaphthols A (1), B (2), and C (3), two known anthraquinones, and five ...
A Neoarchean paleomagnetic pole from the Kisii Series of western Kenya: Implications for crustal mobility
(University of Nairobi, 2016)
The Kisii Series lavas of western Kenya were the target of a paleomagnetic study. The Kisii Series is a volcano-sedimentary sequence dated to 2531 ± 3 Ma (U–Pb) that rests unconformably over the Mesoarchean–Neoarchean ...
On Analysis And Synthesis Operators And Characterization Of The Synthesis Matrix Of A Frame In Terms Of The Frame Operator
(University of Nairobi, 2018)
In this research paper we introduce the operators associated with a frame. That is the Analysis
and the Synthesis Operators and their basic properties. The structure of matrix representation
of the Synthesis operator is ...
Near Real-time Tropospheric Water Vapour Profiling Using A Ground-based GPS Receiver
(University of Nairobi, 2017)
This article presents a remote-sensing tool employing an artificial neural networks algorithm for near real-time determination of the relative humidity (RH) profile above a site using global positioning system (GPS) data ...
Compositional Analysis and Optical Properties of Co Doped Tio2 Thin Films Fabricated by Spray Pyrolysis Method for Dielectric and P Hotocatalytic Applications
(University of Nairobi, 2017)
Abstract Cobalt doped TiO2 thin films (CTF) deposited by spray pyrolysis has been studied. The compositional analysis has been done using RBS method, while optical spectroscopy has been done by measuring the transmittance ...
Status of e-learning Quality in Kenya: Case of Jomo Kenyatta University of Agriculture and Technology Postgraduate Students
(University of Nairobi, 2018-02)
There is a substantial increase in the use of learning management systems (LMSs) to support e-learning in higher education institutions, particularly in developing countries. This has been done with some measures of success ...
Partial least square structural equation modelling’use in information systems: an updated guideline in exploratory settings.
(University of Nairobi, 2018)
The purpose of many studies in the field of Information Systems (IS) research is to analyse
causal relationship between variables. Structural Equation Modelling (SEM) is a statistical
technique ...
Factors affecting asynchronous e-learning quality in developing countries university settings
(University of Nairobi, 2018-04)
Despite the potential of Learning Management System (LMS) supported asynchronous e-learning to improve asynchronous e-learning system quality by enhancing learning effectiveness and academic achievement of HEIs , several ...