ABSTRACT The decrease in availability of fuel wood and rise in prices of fo~sil foels in Nigeria calls for considering alternative sources of energy for domestic and industrial use. This project was carried out in order to design and develop a low cost briquetting machine for rural communities. It involves the modificaion of hand use in producing briquettes by employing the use of hydraulic jack, moulds, pistons etc. This method is faster and easier. The agricultural residue used was 80% saw...
ABSTRACT A lawnmower is a machine that uses a revolving blade or blades to cut a lawn grass. Many designs have been made, each suited to a particular purpose. Manual grass cutter has environmental issues regarding pollutions and also require the need of man power to operate and has a great maintenance to its engine. This robot is design to be environment friendly and operated by a rechargeable battery and can be describe as an intelligent robot because the microcontroller receives information...
ABSTRACT Mobile surveillance robot is a robot which is used for the purpose of surveillance. monitoring, analysis of data and gathering of information with or" ithout the approved know ledge or the holder of the in formation and the timely d issem i nation nf in format ion to those who need to know so that action can be taken. The designed mobile survei I lance robot has a night vision camera with the ability to monitor its surrouncling. environment and collect data from it. The need to surve...
ABSTRACT Electricity is one of the foremost necessary resources during this century which needs to be conserved otherwise the next generations might be deprived of the opportunity. However there is tendency we leave our various rooms and offices and forget to switch off the lights and fan, so electricity is wasted. Additionally in most cases, switches of lights and fan are situated in places where we might need to search for them in the dark and just in case of guests, it becomes tougher. Th...
ABSTRACT The research evaluates the chemical, mechanical and microstructural characterization of an armour steel sourced from a scraped armoured vehicle in order to develop local content in the armouring technology. Chemical analysis, optical microscopy and mechanical tests were employed to examine the microstructural and mechanical properties of a low carbon armour steel. Chemical analysis showed the elemental constituents and the exact weight per percentage of each element present in the t...
ABSTRACT Majority of small scale farmers and homes are still using open-sun and/or non-convective methods for drying due to either high cost of gas/electric dryer or lack of electricity in their locations. These methods are time consuming and exposed the products to rain and contamination. A maintenancefriendly and properly enclosed dryer is therefore desired. The batch kerosene heated dryer was studied and adapted to suit the need of these people. In this work, the heat and mass transfer an...
ABSTRACT Asynchronous Transfer Mode (ATM) technology is the transfer mode for implementing a Broadband-Integrated Services Digital Network (B-ISDN). ATM defines multiplexing and switching techniques for broadband signals. Synchronous Optical Network (SONET) is employed in the B-ISDN backbone. The main objective of an ATM is to guarantee Quality of Service (QoS) in transfer of cell streams across networks. This technology recommended as the transport vehicle for the B-ISDN offers a great fl...
Abstract The primary objective of this study was to investigate the rank importance or most significant motivating factors on construction employees in South-South Nigeria. The research method for the study included a literature review and field survey. A sample population was selected from the target location. The findings indicated that the construction workers’ top five (5) motivation factors were: leadership, supervisor’s loyalty to employees, good salary, goalsetting, and good worki...
ABSTRACT Over the last few years, there has been mounting concern about the possibility of adverse health effects resulting from exposure to radio-frequency electromagnetic fields. Such emissions from wireless communication devices like mobile phones. Since then, researchers, scientists, and other professionals have issued many reports that prove either a correlation between radiations emitted by mobile phones and health related hazards (cancer, reproduction, car accidents etc) exists or do...
ABSTRACT The assumed deflection shapes used in the approximate methods such asin the Rayleigh–Ritz method were normally formulated by inspection andsometimes by trial and error, until recently, when a systematic method ofconstructing such a function in the form of characteristic orthogonal polynomials(COPs) was developed in 1985. However, vibrational analyses of plates with all edges free or clamped are much more complicated. This project aims at establishing particular expressions for the...
ABSTRACT Biomass Briquetting can address waste problems, reduce air pollution from direct open air burning and also reduce dependence on fossil fuels for heat generation. Dry leaves have been shown to have high calorific values; therefore the purpose of this study is to determine the effects of some binders on the physical and combustion properties of dried leaves briquettes. Dried leaves were mixed with binders such as clay, starch and Arabic gum separately at different ratios of 10%, 20%, ...
ABSTRACT This study investigated the influence of mud channel characteristics on real-time data logging while drilling. Drill string bore filled with flowing mud as the data transmission medium in mud pulse telemetry can have significant changes in its properties as a result of mud type (waterbased mud or oil-based mud) which selection depends on the formation being drilled and depth penetrated. Logging data are transmitted to the surface modulated onto pressure pulses which amplitudes are g...
ABSTRACT Analysis of plane truss structures based on the assumptions that (1) members are connected at joints by frictionless pins and (2) loads are applied at joints only have become a norm not minding the facts that our practical trusses are always constructed by connecting members to gusset plates by welds, rivets, or high-strength bolts and loads may not necessarily be applied only at the nodes, have made such assumptions not to yield quite precise results. By the nature of practica...
ABSTRACT Solar cells based on ITO/InP have been shown to possess a remarkable potential for space applications. The determination of the terrestrial and simulated-space stability of any type of solar cell is important in obtaining the payload power requirements of a spacecraft which will be powered by that type of cell. In this work, a preliminary investigation of the terrestrial stability of ITO/InP cells has been performed. The cells were stored in the dark for six months in thermostaticall...
ABSTRACT The development and utilization of energy has led to environmental degradation with associated health hazard. Hence the trust of this project is to optimize energy mix in a reliable, affordable, available, safe, efficient, effective and sustainable way at control cost subject to environmental constraints. In other to achieve the desired goal, optimization model is derived with unit cost of each of the various energy sources as the objective function and environmental impact as const...