Browsing Faculty of Science & Technology (FST) by Title
Now showing items 3159-3178 of 3948
-
Radiation Exposure O Patients And Associated Health Risks In Some Diagnostic X-Ray Examinations
(University of Nairobi, 1988)Exposure to ionizing radiation is associated With the possibility that harmful health effects may be induced in the irradiated individuals, or in their descendants. In order to obtain quantitative assessments of such ... -
Radiative characterization of atmospheric aerosols over selected urban, rural and maritime sites of Kenya using sun spectrophotometry
(University of NairobiSchool of Physical Sciences, 2010)Atmospheric aerosols modulate the radiative budget and ambient air quality of the atmosphere, thus, there is a need to develop both analytical and computational methodological techniques that determine their physical, ... -
Radioactivity and elemental analysis of carbonatite rocks from parts of Gwasi area, South Western Kenya
(University of NairobiSchool of Physical Sciences, 2009)Rocks and soils from a number of areas under lied by carbonatite rocks in Kenya have been associated with high radioactivity. In this thesis, the analyzed results of the background radiation measurements in the field, ... -
Radiological survey and elemental analysis in the gold mining belt, Southern Nyanza, Kenya.
(University of NairobiSchool of Physical Sciences, 2009)A radiological survey and elemental analysis in the gold mining belt was carried out at Osiri, Mikei, Masara and Macalder goldmines in Macalder Division of Migori district, in southern Nyanza, Kenya, where gold has ... -
Rain water harvesting for enhanced household water, food and nutritional security: case study of Kitui west, lower Yatta and Matinyani districts, Kenya
(University of Nairobi, 2014)In semi-arid areas of Kenya, over dependence on agriculture, low and unreliable rainfall and high livestock numbers, justify the considerations of rainwater harvesting for agricultural production. A step by step is now ... -
Rainfall And Temperature Trends, Farming Patterns And Rainwater Harvesting Technologies In Kieni Sub-County
(University of Nairobi, 2020)The study area was in Tigithi Sub-location of Kieni constituency in Nyeri County which is an Arid and Semi-Arid zone with unreliable rainfall and high temperatures. The area experiences a bimodal rainfall pattern. The study ... -
Rainfall-runoff model for the Nzoia drainage basin
(Depatment of Meteorology, University of Nairobi, 1979)The Wiener-Hopf theory of optimum dynamic systems is applied to the determination of stable runoff impulse response functions of Nzoia River drainage hydrologic system from coincident records of input rainfall and ... -
Rainfall-runoff relationships in the Ruvu Basin of Tanzania
(1982)In Tanzania rivers are mainly utilized for hydroelectric power supply, urban and rural water supply and for irrigation. The basic data required for assessing the potential of the rivers are long records of rainfall and ... -
Raingauge network designs for Uganda
(Department of Meteorology, University of Nairobi, 1991)The effective use of rainfall informations for all water use activities can only be derived from well designed raingauge networks. The objective of this study was to design raingauge networks for Uganda. Two basic ... -
Rainwater harvesting as a means to reduce the problem of water scarcity a case of Arusha region.
(University Of Nairobi, 2013-07-31)It is clear from the World water quantity that out of total available water, only 0.3% is available for human consumption. But today even this is getting polluted due to human activities like mining, industrialization ... -
Rainwater Harvesting For Domestic Use: A Case Study Of Machakos District
(Department of Meteorology, 2007)This study investigated the characteristics of rainfall and quantified the probable volume of water that can be harvested from rainfall inputs. The region of study considered was Machakos district in Kenya. The area lies ... -
Raman Spectrometric Study of Influence of Acetaminophen on Female Mice`s Reproductive Hormone Levels Blood
(University of Nairobi, 2020)This study presents work on the effects of acetaminophen on female mice’s reproductive hormone levels in blood using Raman spectroscopy together with chemometrics. Here weak Raman signals are enhanced by a factor of 3.94 ... -
Random Forests Application In Missing Data And Predictive Modelling For Hierarchical Routine Clinical Data: A Case Study Of Childhood Pneumonia In Kenya
(UoN, 2019)Health stakeholders usually need complete, accurate and reliable estimates of various health outcomes to make decisions on improving health care delivery. Missing observations especially in clinical routine data is one ... -
Random Walks as Markov Chains
(School of Mathematics, University of Nairobi, 2018)The dissertation applies the Markov chain theory to four types of random walks namely; simple random walk, random walk with reflecting barriers, random walks with absorbing barriers and cyclic random walks. Various methods ... -
Rangeland Resource Dynamics And Their Implications For Pastoral Livelihoods In Amboseli Ecosystem, Kenya
(University Of Nairobi, 2016)Worldwide, rangeland ecosystems have experienced tremendous land use changes in the recent decades that have triggered numerous ecological, social and economic dynamics with adverse implications on its inhabitants. These ... -
Rapid analysis of polyolefin antioxidants and light stabilisers by supercritical fluid chromatography.
(University of NairobiDepartment of Chemistry, 1990-02)Nineteen commercial antioxidants and light stabilisers, with a wide range of relative molecular masses and boiling-points, present in polyolefins were analysed by packed column supercritical fluid chromatography on four ... -
Rapid assessment of calcium carbide ripened bananas using machine-learning assisted laser Raman spectroscopy.
(University of Nairobi, 2021)Fruit ripening is usually a natural process in which fruits undergo various chemical and physical changes before they become palatable. New artificial ways of fruit ripening have been developed as a result of recent ... -
Rapid Assessment of Pesticide Residues in Fruits and Vegetables Using Machine Learning Assisted Diffuse Reflectance Spectroscopy
(University of Nairobi, 2021)There is an urgent need for accurate, non-destructive, rapid, and affordable techniques for screening pesticide residues in fresh fruits to assess whether regulatory standards are met by not surpassing the allowed maximum ... -
Rapid Assessment of Pesticide Residues in Fruits and Vegetables Using Machine Learning Assisted Diffuse Reflectance Spectroscopy
(University of Nairobi, 2021)There is an urgent need for accurate, non-destructive, rapid, and affordable techniques for screening pesticide residues in fresh fruits to assess whether regulatory standards are met by not surpassing the allowed maximum ... -
Rapid Identification Of Edible Oils Manufactured In Kenya
(University of Nairobi, 2016)The aim of this research was to develop a rapid identification method of edible vegetable oils manufactured in Kenya. Vegetable edible oils processed and refined in Kenya have not been characterized and hence it‟s impossible ...
