Faculty of Engineering, Built Environment & Design (FEng / FBD): Recent submissions
Now showing items 261-280 of 1491
-
Effect of heat on mechanical properties and microstructure of reinforcing steel bars made from scrap
(University of Nairobi, 2014)Mechanical properties of reinforcing steel bars (rebars) degrade with elevated temperatures and this deterioration has to be properly accounted for to understand the behaviour of rebars and composite structures in fire. ... -
Application of gis to water quality management for the city of Nairobi water supply.
(University of Nairobi, 2014) -
Polydisperse Low Diameter ‘Non-Toxic’ Silver Nanoparticles Encapsulated by Rooibos Tea Templates
(University of Nairobi, 2014)This work reports the synthesis of ‘non-toxic’ polydisperse, low diameter silver nanoparticles (AgNPs). Rooibos extracts at temperatures 25 °C, 30 °C, 50 °C, 70 °C and 90 °C were used. The effect of different extraction ... -
Development of vVC-NI eutectic alloys for wear resistance
(University of Nairobi, 2014)Vanadium carbide is less dense, harder and tougher than tungsten carbide, and nickel is more corrosion resistant that cobalt. Replacing the binder with Ni should improve the corrosion resistance. Since there are eutectics ... -
Development of an x-ray method for mineralogical analysis of Africa soils using a benchtop diffractometer
(University of Nairobi, 2014)Soil mineralogy is a principal determinant of many soil functional properties that are expensive and time consuming to measure, and can in turn determine soil agricultural, engineering and environmental qualities. ... -
Micronutrients in selected food crops in Muguga, Kenya
(University of Nairobi, 2014)Micronutrients are essential for growth of plants and although they are required in small quantities, inadequate supply of one or more of these results in reduced yields and quality of crop products. Micronutrients are ... -
Deflection characteristics for flexible road and aiport pavements in Kenya
(2004)As traffic traverses a flexible pavement the axle loads induce a downward deflection of the pavement surface. The pavement however, bounces back as soon as the load passes a section. This downward deflection is measured ... -
Coping strategies adopted by public universities in Kenya in response to environmental changes
(University of Nairobi, 2014)This study was undertaken to establish strategies adopted by public universities in Kenya in response to changes in the environment. The study design was descriptive and utilized a cross-sectional survey of all the public ... -
Incompressible smoothed particle hydrodynamics modeling of thermal convection
(2013)An incompressible smoothed particle hydrodynamics (ISPH) method based on the incremental pressure projection method is developed in this study. The Rayleigh-Bénard convection in a square enclosure is used as a validation ... -
Natural gamma radiation levels, indoor and water 222 RN Concentrations in soil division of Kerio valley, kenya
(University of Nairobi, 2001)Human beings are constantly exposed to natural radioactivity. This radiation is mainly from natural gamma rays and radon and its decay products. The gamma rays are as a result of the decay of primordial nuclides and their ... -
Reducing real and reactive power losses in the distribution system by DFIG placement and sizing using ordinary PSO and HGPSO : a comparison
(University of Nairobi, 2012)Due to the increased importance of DFIGs in optimization of real and reactive power losses and the maintenance of voltage profile, the general methods of DG placement and sizing in the existing literature cannot be of ... -
Biosorption of Zn (II) ions from aqueous solutions by water hyacinth (Eichhornia crasippes): Equilibrium and Kinetic studies
(2014)The biosorption characteristics of Zn (II) ions were investigated. Experimental parameters affecting the biosorption process such as pH, contact time, biomass dosage, initial metal ion concentration, and temperature were ... -
Modelling the potential of rainwater harvesting in western Kenya using remote sensing and GIS techniques
(University of Nairobi, 2014-11)Water scarcity is among the many problems faced today by many countries in the world, especially African countries. The Kakamega area in western Kenya is known for plenty of rainfall (around 2000 mm annually), however, ... -
Optimizing the location of base transceiver stations in mobile communication network planning: case study of the Nairobi central business district, Kenya
(University of Nairobi, 2014)Optimal signal coverage has always been a fundamental issue for cellular network operators. Other issues related to capacity, quality of service and cost efficiency are also rapidly gaining prominence. In order to determine ... -
First in first out (FIFO) and priority packet scheduling based on type of service (TOS)
(University of Nairobi, 2014)Mobile Ad Hoc Networks (MANETs) require prudent res ource allocations especially in scheduling mechanis ms that manage buffering of packets during waiting tim e. Various scheduling algorithms may be implemented to govern ... -
Structural performance evaluation of landolphia buchananii concrete beams
(2014-10)The study sought to evaluate the performance of Landolphia buchananii concrete beams to establish the potential of Landolphia buchananii as structural reinforcement of concrete in beams. Tensile strength test on ... -
Use of Stone Dust in the Design of High Performance Concrete
(2014)This research evaluated the suitability of stone dust in the design and production of High Performance Concrete (HPC). HPC mix was designed, tested, costed and a comparison of concrete classes used in the market (Class 25, ...
