Browsing School of Biological and Physical Science by Title
Now showing items 880-899 of 925
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Total electron content and scintillations over Maseno, Kenya, during high solar activity year
(Springer International Publishing, 2019)Proper characterization of total electron content (TEC) and scintillation is very important to global positioning system (GPS) users in communication, navigation, ionospheric or atmospheric studies. Quiet time variation ... -
Toward a size scale-up cold sintering process at reduced uniaxial pressure
(Journal of America ceramic library, 2019)Cold sintering is a low-temperature powder process methodology that enables the densification of ceramics and ceramic-based composites at significantly reduced times and temperatures. Although the general notion of required ... -
Toward a size scale-up cold sintering process at reduced uniaxial pressure
(The American Ceramic Society, 2019)Cold sintering is a low-temperature powder process methodology that enables the densification of ceramics and ceramic-based composites at significantly reduced times and temperatures. Although the general notion of ... -
Trace Elements in Crustaceans, Mollusks and Fish in the Kenyan Part of Lake Victoria: Bioaccumulation, Bioindication and Health Risk Analysis
(Springer US, 2020-02-04)This is the first comprehensive report on the accumulation of Cr, Ni, As, and Ag in the fish species Nile tilapia Oreochromis niloticus and Nile perch Lates niloticus from Lake Victoria, complemented with recent data on ... -
Traditional Water Purification Methods Among the Luo and Luhya Communities of Kenya
(Springer, Cham, 2022)Since time immemorial, mankind has taken measures to produce clean drinking water with the quality of water determined organoleptically. The earliest documented literature on water treatment involved different methods like ... -
Transient Propagation of Longitudinal and Transverse Waves in Cancellous Bone: Application of Biot Theory and Fractional Calculus
(MDPI, 2022)In this paper, the influence of the transverse wave on sound propagation in a porous medium with a flexible structure is considered. The study is carried out in the time domain using the modified Biot theory obtained by ... -
Triterpenes from Elaeodendron schweinfurthianum and Their Antimicrobial Activities against Crop Pathogens
(Scientific & Academic Publishing, 2017-01-26)Phytochemical evaluation of Elaeodendron schweinfurthianum (Loes) extracts led to the isolation of nine compounds which were identified as 3-oxofriedelane (1), 3α- hydroxyfriedelane (2), 3-oxo-29-hydroxyfriedelane (3), ... -
Trypanosoma infection in carrier fish of Lake Victoria, Kenya.
(PW Kamundia, PG Mbuthia, RM Waruiru, LW Njagi, PN Nyaga, RH Mdegela, DK Byarugaba, RO Otieno, 2010)The carrier status of the haemoparasite in fish was investigated in randomly selected Nile tilapia (Oreochromis niloticus) and Nile perch (Lates niloticus). Blood was drawn from the heart using needle and syringe from ... -
Tuning the reactivity of ruthenium (II) terpyridyl complexes using auxiliary ligands: kinetic and mechanistic studies
(Springer International Publishing, 2022)Substitution behavior of the labile aqua ligand in four mononuclear ruthenium(II) terpyridyl complexes with different auxiliary N (pyridine) (Ru1), N^N (2,2′-bipyridyl (Ru2), 2′-(2-pyridyl)quinoline (Ru3), 2,2′-biqunoline ... -
Ultracold Atom-Ion Systems in Hybrid Traps
(Humboldt-Universität zu Berlin, 2017-11-21)This thesis deals with the theoretical description of a hybrid system of an ultracold neutral atom and a single ion. These hybrid atom-ion systems combine the key advantages of ultracold neutral atoms and ions. In particular, ... -
Ultracold Atom-Ion Systems in Hybrid Traps
(Humboldt-Universität zu Berlin, 2017-11-21)This thesis deals with the theoretical description of a hybrid system of an ultracold neutral atom and a single ion. These hybrid atom-ion systems have attracted significant interest in recent years. They combine the key ... -
Ultrasonic propagation in fractal porous material having rigid frame
(X ECCOMAS Thematic Conference on Smart Structures and Materials, 2023-07-03)This paper discusses the impact of the fractal structure of porous materials on wave behavior. In addition to commonly used parameters such as porosity, tortuosity, viscous and thermal characteristic lengths, a fractal ... -
Understanding yields in alley cropping maize (Zea Mays L.) and Cassia siamea Lam. under semi-arid conditions in Machakos, Eastern Kenya
(IOS Press, 2001-01-01)Six seasons of experiments in Machakos, Kenya, revealed that above about 150 mm of rainfall, maize yields per row in alley cropped "replacement" agroforestry (AF) plots, of Cassia siamea Lam. and maize (Zea mays, cv. ... -
Uptake of conventional interventions, level of awareness and perception on computer vision syndrome: a cross-sectional study among University students, Kenya
(Ophthalmol J, 2021)Awareness and perception are critical determinants in the uptake of a health intervention. This study assessed the level of awareness and perception in relation to the uptake of interventions of computer vision syndrome (CVS) ... -
Ursane and tirucallane-type triterpenes of Boswellia rivae oleo-gum resin
(Taylor &Francis, 2016)Two new ursane-type triterpenes characterized as 3-oxo-24-acetoxy11α-hydroxy-urs-12-ene (1) and methyl 3α-acetoxy-11α-methoxyurs-12-en-24-oate (2), together with known compounds 3–11, were isolated from Boswellia rivae ... -
The use of green tea (Camellia sinensis) leaf flavan-3-ol composition in predicting plain black tea quality potential
(Elsevier, 2007-12-13)Reliable and quantifiable green leaf parameters for predicting black tea quality potential of tea bushes at the single bush stage are necessary to shorten tea breeding and clonal selection programmes. Green leaf ... -
The use of green tea (Camellia sinensis) leaf flavan-3-ol composition in predicting plain black tea quality potential
(Elsevier, 2007-01-01)Reliable and quantifiable green leaf parameters for predicting black tea quality potential of tea bushes at the single bush stage are necessary to shorten tea breeding and clonal selection programmes. Green leaf flavan-3-ols ... -
The use of phytochemical composition of fifty (50) selected plants found in the university botanic garden, Maseno, Kenya to show
(Research gate, 2015-08-02)Qualitative phytochemical analysis of 50 plants, five each from 10 selected families is presented. The ten plant families were selected based on their high plant frequency of occurrence within the botanic garden. The ... -
Using phenotypic based approaches to compare Escherichia coli isolates from human, livestock, fish and environmental sources within the Lake Victoria basin of Kenya
(Academic Journals, 2013-10-18)The study compares Escherichia coli recovered from human, fish products, domesticated animals and the environment within the Lake Victoria basin on the basis of their antimicrobial susceptibility profiles. A total of 134 ... -
Utilization of fruit waste substrates in mushroom production and manipulation of chemical composition
(Elsevier, 2022-01)The current study evaluated the effect of mushroom cultivation using fruit waste substrates on yield performance and antioxidant activities. The total phenolic content and the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical ...