ABSTRACT Tree residues are generated in large quantity in our environment. Nowadays, adding value to these residues could make them become item of economic importance. The aim of this study is to adapt a traditional method of charcoal production (Earth Mound) in order to add value to the tree residues generated in University of Ibadan with a view to enhance the benefit derived from them. The billets of Acacia nilotica were converted from both wet and dry wood samples. The billets were t...
Abstract The cost of managing ornamental and naturally growing trees in the University of Ibadan, Nigeria, is becoming challenging. Adding value to the residues from these trees with a view to enhance its economic value will minimize the management cost. This study adapted Earth Mound method of charcoal production to add value to tree residues generated in the University of Ibadan to enhance its economic value. Mixed residues of Acacia nilotica (Acacia), Albizia zygia (Ayunre) and Melicia ex...
ABSTRACT Wood Plastic Composite panels were produced using a locally fabricated extruding machine at a temperature of about 170°C-200°C. the Sawdust of Anogeissus leiocarpus(Ayin) and Recycled Polyethylene Teraphthalate (PET) Chips were mixed in the ratio 1:1 to 1:5 and densities of 770.58 kg/mm3, 888.65 kg/mm3, 1,114.71 kg/mm3, 1,117.58 and 1, 141.84 kg/mm3 respectively. The quantity of recycled polyethylene teraphthalate (PET) Chips and sawdust used in the panels production were later...
An energy audit on the Brass Liquified Natural Gas plant at Brass Island former Agip facility was carried. The average offshore windspeed and wave return periods for 12months were measured for their wind and wave energy potentials. Also, the solar insolation for the location was collected for a 12month period. A pilot design based on techno-economic analysis was made for a wind-solar- gas turbine hybrid power system and results showed it's cheaper, environmentally friend, and more efficie...
ABSTRACT This project work deals on the feasibility of transferring the Toe – To – Heel Air Injection (THAI) technology which is a new in-situ combustion method of heavy oil recovery from Alberta, Canada, where the technology has recorded success with high rate of recovery to South-West, Nigeria (Ondo state) for efficient heavy oil recovery. In this work, the textural, reservoir, physical and chemical properties of oil sand in Nigeria were compared with that in Canada where the t...
ABSTRACT The advent of sachet and bottled water has increasingly filled the gap in household water security. This research work was carried out to assess the quality of bottled and sachet water sold in Bauchi metropolis. Thirty (30) water brands consisting of twenty (20) sachet water brands and ten (10) bottled water brands were assessed for their physical, chemical and microbiological parameters using standard analytical procedures. Physical examination was carried out...
Carbon steel corrosion is a commonly encountered issue in pipelines transporting hydrocarbons containing corrosive agents such as CO2, H2S and water. As a result, several corrosion prediction models have been put forward over the years although no standard model exists for corrosion prediction in the industry. Two of such models are the Norsok model for predicting sweet generalized corrosion and the Papavinasam model for predicting localised corrosion which are both insufficient to accurately...
The household lighting cost accounts for 10% of the electric bill, changing the light bulbs effectively can reduce the long term energy costs significantly. In Nigeria, where less than one percent of the population has access to 24 hours of interrupted power supply there is a need for a complementary, renewable source of light which provides enough illumination at a reasonable price, with assured safety using it and also using for a long duration of time before the need to replace it. Recentl...
This project contains details of Coal fired circulating fluidize boiler.The motivation of our project was to develop a method which is energy economical i.e. uses less energy owing to increasing energy issues. Process description, mass balance, energy balance, equipment design, and cost estimation of circulating fluidized bed boiler for combustion of coal to generate 50 MW electricity as part of chemical plan design project.Coal has always been at the top of list of sources of energy. We have...
In the present study, an attempt was made to investigate the use of Shea butter as the oily base in the formulation of analgesic (Methyl salicylate) creams using hydrous wool fat base cream as standard. Methyl salicylate (The active ingredient), Bees wax, water and Shea butter obtained from local sources and refined were used separately on three different types on emulsifying agents namely cetrimide, polysorbate 80 and sodium lauryl sulphate, in the formulation of the analgesic cream. The s...
Water based metalworking fluids must be properly mixed and maintained in the proper concentration range to maximize performance. When fluid concentrate and water are mixed to charge the machine’s fluid reservoir or central system, the fluid concentration must be tested to insure that the starting concentration is correct. The concentration can be measured with a refractometer, test strips or a chemical titration method. Concentration may be expressed as a percentage or as a ratio of the am...
ABSTRACT | A major disadvantage with fixed modulation (nonadaptive) on channels with varying signal-to-noise ratio (SNR) is that the bit-error-rate (BER) probability performance is changing with the channel quality. Most applications require a certain maximum BER and there is normally no reason for providing a smaller BER than required. An adaptive modulation scheme, on the contrary, can be designed to have a BER which is constant for all channel SNRs. The spectral efficiency of the f...
Abstract— The IEEE 802.16 standard, also known as WiMAX, has emerged as an exciting technology for broadband wireless communications with potentials to offer high throughput and support high bandwidth demanding applications. WiMAX, however, has yet to prove its effectiveness when the end terminals are not fixed and have the capacity to move from one place to another at different speeds. Recent studies suggest that while WiMAX (802.16e) has the potential to deliver a data rate up to 75 Mb/s ...
TABLE OF CONTENTS Page ABSTRACT ……………………………………………………………………………..iii ACKNOWLEDGEMENTS……..………………………………………………………..iv LIST OF ILLUSTRATIONS………………………………………………………….…vii SECTION 1. INTRODUCTION……………………………………………………….…….1 2. DEFINITION OF A COGNITIVE RADIO………………..…….……………4 3. OPERATIO...
The saturated liquid density deviations were compared using the PR, RSK (Advanced), AGA8, and GERG2008 EoSes. The bubble pressure deviations, saturated liquid densities, isobaric specific heat capacities, and enthalpy of vaporization were compared using the PR, RSK (Advanced) and GERG2008 EoSes. The GERG2008 EoS was used to analyse the effect of nitrogen and heavy alkanes on the thermophysical properties of LNG mixtures. Experimental density data was used to compare the accuracy of the Revi...