School of Biological and Physical Science: Recent submissions
Now showing items 281-300 of 933
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Influence of rainfall amount and livestock grazing on soil respiration in a moist Kenyan savannah
(African Journal of Ecology, 2019)The influence of livestock grazing and changing rainfall patterns on soil respiration (Rs) in the tropical savannah in Lambwe is unclear. Measurements of Rs using chambers were conducted between June and November 2012 in ... -
Microstructural and Elastic Properties of Stable Aluminium-rich TiAl and TiAl2 Formed Phase Intermetallics
(North-Holland, 2021)We studied aluminium-rich Ti-Al (Ti32Al68 and Ti40Al60) binary alloys that were composed of TiAl and TiAl2 lamellar microstructures. The law of mixtures was employed in calculating the theoretical Young’s moduli. The lattice ... -
Kenya’s response to the COVID-19 pandemic: a balance between minimising morbidity and adverse economic impact
(African Academy of Sciences, 2021)Coronavirus disease 2019 (COVID-19) has ravaged the world’s socioeconomic systems forcing many governments across the globe to implement unprecedented stringent mitigation measures to restrain its rapid spread and adverse ... -
Phytochemical Analysis of Pyrethrum Plant Extract and its Anti-Aphid Effect On African Nightshades (Solanum Scabrum Mill)
(EAS Journal of Biotechnology and Genetics, 2021)African nightshades (Solanum scabrum) are one of indigenous vegetables widely consumed in Kenya. Yield losses due to aphids are estimated to about 84-96% in Kenya. Aphids have developed resistance to synthetic pesticides. ... -
Push Motivation Factors Influencing Tourists’ Destination Loyalty in the Lake Victoria Region Tourism Circuit, Kenya
(Journal of Hospitality and Tourism, 2021)Purpose:The purpose of this study was to identify push motivation factors influencing tourists’ destination loyalty in the Lake Victoria Region Tourism Circuit, Kenya. Methodology:Thestudy adopted an explanatory research ... -
Pull Motivation Factors Influencing Tourists’ Destination Loyalty in the Lake Victoria Region Tourism Circuit, Kenya
(www.ajpojournal.org, 2021)Purpose:The purpose of this study was to identify pull motivation factors influencing tourists’ destination loyalty in the Lake Victoria Region Tourism Circuit, Kenya. Methodology:Thestudy adopted anexplanatoryresearch ... -
2-Hydroxysorangiadenosine: Structure and Biosynthesis of a Myxobacterial Sesquiterpene–Nucleoside
(Multidisciplinary Digital Publishing Institute, 2020)Myxobacteria represent an under-investigated source for biologically active natural products featuring intriguing structural moieties with potential applications, e.g., in the pharmaceutical industry. Sorangiadenosine and ... -
Effects of Cutting Position of Rootstock and Exogenously Applied Auxins On Rooting Ability, Growth and Yield of Rose
(Maseno University, 2016)Rose, is the leading cut flower crop in Kenya and enjoys high demand in both national and international markets. Low rooting and survival of the cuttings increases cost of production and may limit the use of some rose ... -
Sources, distribution, and risk assessment of organochlorine pesticides in Nairobi City, Kenya. Journal of Environmental Sciences, 96, 178–185
(Elsevier, 2020)The distribution and sources of organochlorine pesticides (OCPs) in air and surface waters were monitored in Nairobi City using triolein-filled semipermeable membrane devices (SPMDs). The SPMDs were extracted by dialysis ... -
Nitrogenous Fertilizer Rates and Plucking Intervals Effects on Soil Organic Carbon, pH and Tea Yields and Their Relationships in Eastern Africa Tea Growing Regions
(International Society of Tea Science, 2020)Eastern Africa tea grows in high rainfall areas where nutrients depletion through leaching, and surface run-off can be high, in addition to removal with crop. Nutrients replenishment through fertilizer applications is ... -
Effects of processing technologies on chlorogenic acid, gallic acid and theanine in selected Kenyan tea cultivars
(Tea Research Institute, Kenya, 2018)Tea (Camellia sinensis) is popular for its high levels of polyphenols which are attributed to its antioxidant properties. However, other associated biomolecules are also potent antioxidants and contribute to health effects. ... -
Effect of Post Purchase Evaluations on Guest Loyalty in Four and Five Star Hotels in Nairobi and Mombasa, Kenya
(Masaimara university resipototry, 2019)Demand for quality hotel service has led to adoption of information and communication technologies. Guests’ post purchase evaluation and loyalty further influence hotel performance, yet information on them is not well ... -
Effect of Social Media Use on Guests’ Post Purchase Evaluation and Loyalty in Four and Five Star Hotels Kenya: Quantitative Approach
(Masaimara university resipototry, 2019)Abstract: Demand for quality hotel service has led to adoption of information and communication technologies. Lately, online social media has revolutionized communication, post purchase evaluation and the marketing of ... -
Kenya-Ethiopia Relations: a Study of the Significance of Economic and Political Factors Contributing to Co-operation, 1963-1991
(Nairobi university, 2005)This thesis analyses and explains the nature of inter-state relations between Kenya and Ethiopia. An analysis of the two countries' relations shows that despite change of leadership in both Kenya and Ethiopia and despite ... -
Analysis of Loss Ratios Using a Mixed Linear Model
(University of Nairobi, 2008)Loss ratios have been employed by a broad range of users for diverse purposes. Insurance companies, regulators, investors, rating agencies, investment analysts, lenders and others have used the loss ratio for their particular ... -
Evaluation of selected Acremonium zonatum Saw. Gams. mycoherbicide-oil mixtures for Eichhornia crassipes (Mart.) Solms. Laubach) biocontrol in Lake Victoria (Kenya
(IOSR-JAVS, 2017)The use of microbial innoculum oil formulations has shown great promise for enhancing the efficacy of fungal agents that show potential as insecticides, fungicides and herbicides. When used in mycoherbicide formulation, ... -
Quiet Time Geomagnetic Field Variations in the Equatorial East African Region During the Inclining Phase of Solar Cycle 24
(Science Publishing Group, 2014)In the present paper, geomagnetic field data obtained from magnetometer measurements at two ground based stations have been used to study solar activity dependence of the solar quiet variations. The study has focused on ... -
A study of the Equatorial Ionosphere over Nairobi During selected magnetically disturbed and quiet times for the year 2009 Using co-located instruments
(IJARPS, 2014)Investigation of the behavior of the Equatorial Ionosphere over Nairobi-Kenya within the East Africa region is done using co-located instruments, that is, SCINDA-GPS system and a Magnetometer ( MAGDAS). This was done for ...