ABSTRACT Two field experiments were conducted to compare the growth and yield of tomatoes using experimentation and FAO AquaCrop model at the University of Cape Coast Teaching and Research Farm in the Cape Coast Metropolitan Assembly of the Central Region of Ghana. The Randomized Complete Block Design was used with four (4) treatments and four(4) replications for the two experiments. The treatments used for both experiments were T1 – Full irrigation (100 %), T2 – 90 % irrigation, T3 – 8...
ABSTRACT This study examines the manufacturing capabilities of the Nigerian furniture industry. An extensive review of literature was carried on wood; structure, seasoning types, properties and finishing, Also" a review on wood furniture manufacturing processes, In terms of tools. equipments, design, ergonomics, finishing was carried out. Interview, observation, discussion and survey method " were used for data gathering .from some selected furniture workshops in Lagos: An assessment of the f...
ABSTRACT Multi-layered, feed forward . , back-propagation artificial neural networks (ANN) models were developed to predict friction losses in spark-ignition engines. The friction losses were modeled as friction mean effective pressure (fmep) due to: crankshaft, reciprocating parts, valve trains, auxiliary, and pumping systems. The developed models were validated in relation to existing engine friction data and empirical models of Patton et ai. (patton, K.J., Nitsche, R.G. and Heywood lB. [1...
ABSTRACT Contamination of cement slurries during oil well cementing distorts their designed properties and leads ultimately to poor cement jobs. To promote best practices and enhance cementing successes, it is always desirable to understand slurry response under different conditions such as contamination. Appropriate corrective measures can then be undertaken where necessary. This study carried out complete rheological experimental characterization of oil well cement slurries contaminated by ...
ABSTRACT Environmental exposure to lead, a highly toxic heavy metal, is a significant cause of human morbidity and mortality. However, the determination of lead levels in homes and built environment have not been well investigated in Nigeria. This study was designed to evaluate the lead levels in dust, paint, paint chips, soil and water; and to ascertain the geotechnical properties of soil in the home environment in Ibadan. Four Focus Group Discussions (FGDs) were conducted and six hundred ...
ABSTRACT The main purpose of the study was to investigate into the impact of using CFL bulbs on energy consumption in Ghana- a case study of Twifo Hemang lower Denkyira district in the central region of Ghana. This study employed quantitative and descriptive methodology to collect data and analyze data. The population for this study comprises individuals who consume electricity in the Twifo Hemang lower Denkyira District in the Central Region of Ghana. The population for the study was...
ABSTRACT Sand produced along with oil and gas causes operational, safety, environmental and severe economic challenges. The cost of installing sand control facilities which may not really be needed could also be substantial. Therefore, determining the critical flow rate for the onset of sand production is very important. There are several published studies on sanding in vertical wells, but few on horizontal wells, which have now become very prominent in the industry. The aim of this study was...
ABSTRACT This study focuses on footwear used by Nigerian industrial workers The suitability and comfortablity of these shoes used in a typical Nigerian factory were assessed based on their response to some well-structured questionnaires Some Important features of the shoes were compared with internationally recommended standards The result shows that 62% of the respondents' shoes are suitable These are mostly shoes that are light weight low heeled. made of leather material. and steel toed, th...
ABSTRACT A Survey of the pattern of usage of building materials in the small - to - medium farms in Western Nigeria was undertaken. Wood was the commonest construction material in use, followed by earth products and natural fibres. Decay,and weathering of natural fibres including timber; arid the erosion of earth products were the major problems experienced with their uses. Treatment of the natural products before use was found wanting. Adequate seasoning and preservative treatment of natural...
ABSTRACT In this project a melting pot was designed and constructed using available local materials. This pot was used to melt plastic resin without the resin-changing colour (turning brown) The project was divided into two parts: the design and construction aspect and the control aspect. A good temperature control was incorporated to achieve high quality output. The construction was carried out using galvanized mild steel .It consists of a cylindrical enclosure that is divided into two chamb...
Abstract In recent years, chaotic secure communication systems have attracted significant interest due to their higher unpredictability over conventional secure communications systems and simplicity of implementation. This study presents the modeling of four chaotic modulation techniques. The techniques are Chaotic Masking (CM), Chaos Shift Keying (CSK), Chaos On-Off Keying (COOK), and Differential Chaos Shift Keying (DCSK). Simulations were carried out using Simulink in Matlab environment to...
ABSTRACT A continuous flow multi-stage grinder for grinding grains and other applicable food products comprises the Hooper(001) which receives the grain of food item to be milled and channels it to the mill housing (002) to be milled in stages. The conveyor(003) carries the milled product from one stage of grinding to the next. Contained in the mill house at every stage the grinding pIates (004). The finally ground product comes out for collection through the discharge Channel (005). Grinding...
ABSTRACT In this work, a comparative analysis of alternative energy sources has been carried out to ascertain their suitability in terms of availability, cost, advantages and disadvantages among other factors. The selected energy alternatives are solar and inverters. The first case study-site was an office suit located in government reserved area and the second a medium house unit within Lagos the most commercial city in Nigeria. Practical surveys and data collection were carried out for the ...
ABSTRACT The properties of cast iron grade GL 250 are dependent on the microstructures developed during casting. These microstructures are in turn dependent on the composition of the alloy, type of mould and other numerous casting practice variables such as shake-out time, pouring temperature, mould ambient conditions and inoculating technique. In this work, the effect of silicon content and shake-out time on the grain size (GS) and hardness properties of GL 250 cast iron was studied using a ...
ABSTRACT In this study, the combinatorial problem of university course timetabling of an Engineering Faculty of a Nigerian university (the University of Ibadan) was addressed. The problem of assigning lecturers, rooms, and courses to fixed timeslots, normally, a week, while satisfying a number of problem-specific constraints was modeled as an Integer Linear Programming (ILP) The problem constraints have been divided into hard constraints and soft constraints. While the hard constraints consti...