It is on of the unit operation processes.
Machining: Sintered parts do have some porosity and it is, therefore, necessary to differentiate their machining behaviour from those of fully dense wrought products. The major differences are, as follows: (i) when a porous metal is machined, the depth of work hardening is more important than for the wrought metal, as in case of former, pores create stress concentration. (ii) The temperature at the tool end causes oxidation of the pore surface. (iii) The surface porosity enhances tool vibra...
ABSTRACT This report brings to the fore, The Renewable Energy Sources presently accessible to the human species, and the feasibility of harnessing these energy sources in Nigeria. Since the dawn of the 21st Century, Global Warming, Carbon Emission Reductions and Renewable Energy Sources have all been major topics of discussion, permeating into the facets of every socio-economic and political forum such as, Davos Economic Forum, G7 and G20 Conventions, and has spawned specific platforms for di...
Introduction: In 2000, Nigeria developed a policy on Information Technology (IT), with the aim of making Nigeria an IT adapted country in Africa and also a leading player in the use of ICT as an implement for sustainable development and global competitiveness. Since then Information and Communication Technology has been on the lips of every academic. The world is about to leave behind anyone that is not ICT compliant. ICT has various forms and roles which it performs in learning, especially...
In democratic countries, voting is an vital tool to collect and re-act people‘s views. In the elections, the election of member of the assembly, the head of local/state government election, and others, a voter can cast vote after going to the designated polling place and checking his identity. Conventionally, voting booth is used for casting votes in both centralized and distributed places. Voting is done under the supervision of authorized parties. Counting of votes is done manually once...
INTRODUCTION:Many interconnection device are required in a modern network, from the interface that allows a single computer to communicate with other computers via a LAN cable or a telephone line, to the large and complex switching devices that interconnect two or more entire networks.
INTRODUCTION:Civilsoft QuickCivil Series is computer aided design software Written by Engr Henry orji. The software is used For structural engineering, modeling, loading, detailing, bar schedule and bill of material schedule. Civilsoft QuickCivil series consist of two Software namely: Civilsoft Quick Reinforced Concrete Design (QuickRCD) and QuickSteel.OBJECTIVES Civilsoft Technologies is a company that specializes in providing civil engineering professionals and students with high tech...
ABSTRACT The report beamed at relying the student intense knowledge and skill acquired during my industrial training attachment of the Nigeria Railway Corporation Enugu. it is a well articulated report that gives a comprehensive hand-or-the job report of the student and each chapters from machine shop, smith, foundry and the react gives an indepth. coverage of the corporation work nature. TABLE OF CONTENTSTitle pageDedication Acknowledgment Abstract CHAPTER ONE (MACHINE WORKSHOP...
ABSTRACT: This work entails design, construction, packaging and evaluation of a prototype automatic a.c. voltage stabilizer using parallel cascaded relays. The unit was cascaded to provide more switching contacts on the auto-transformer. The overall system design is a compact assembly encased in a portable metal box with handle which can operate on 90v minimal input voltage. In this paper, a parallel cascaded relay what is essential was implemented in the design of voltage stabi...
Abstract Petroleum based detergents are neither soluble nor biodegradable; they are so stable such that when they flow into the soil, sewer or surface waters, they remain unchanged, resisting conversion into less complex and more soluble substances. In this work methyl ester sulphonate (MES) was produced by transesterification followed by sulphonation of ricinoleic acid, a main constituent of castor oil. A detergent was produced from transesterification followed by sulphonation of castor oil ...
INTRODUCTION Planned maintenance apart from programming inspection, should include monitoring, logging, periodic checks and tests of system as to guarantee correct day-today hitch free functioning and control of “closed circuit” water systems to maintain trouble-free operations.This first requirement for any maintenance system planned or otherwise is to compile an inventory of all plants and equipment to be maintained. Besides, additional information must be readily obtained from the manu...
INTRODUCTION Nigeria is characterized with large expanse of land with remote, isolated communities located at long intervals whose inhabitants are often peasant farmers living below subsistence level these areas are marked by lack of basic infrastructures like road network, telecommunication, water supply and electricity etc. Electricity supply in the country has been through centralized generating station (hydro and thermal) with high capacities (above 100MW). The major operators in the Nig...
INTRODUCTION Since the 1970s, energy crises have been reported across the world. In Nigeria Chendo (2001) reported that national energy supply is at present almost entirely, dependent on fossil fuels and fire wood. Also, Akinbami (2001) also observed that the total energy consumption in Nigeria comprises of 5.22% of natural gas, 3.05% of hydroelectricity, and 50.45% natural gas, 3.05% of hydroelectricity, and 50.45% of fuel work. Meanwhile, Ozean Journal of Applied Sciences 4(3), 2011 252 Ali...
INTRODUCTION Energy for obvious reasons is regarded as the prime mover of any economy, and the engine of growth around which all sectors of the economy revolve. Thus, it becomes imperative that its development, management, and improvement must have predetermined plans and strategies that are capable of driving the economy towards a sure path of sustainable development .West African region has one of the lowest per capita consumptions as far as energy is concerned. On the other hand, the energ...
Introduction This is the design and construction of a light sensitive circuit which when the sensor is blocked will activate the light emitting diode at the output. The output gain depends on the non-inverting input of the operational amplifier used in this demonstration. This system is made of different component which aided in the functionality of the design. Aim and Objective In this paper we are to design and construct a light sensitive circuit which senses an obstruction in the sensing ...