Abstract Heptanes plus fractions have strong effects on the physical properties and phase behaviour of petroleum fluids. It is therefore very important to properly characterize plus fractions. A step to achieving improved characterization is to obtain more realistic molecular weights. Most of the current methods of heptanes plus characterization assume their molecular weights are accurate. However, what is commonly measured in the laboratory is the molecular weight of the complete fluid; the ...
Abstract Hand tools sold in Nigeria have kom hndngly diable due to critical faihms during use. Tlte objective ofthis sftrdy is to test irsrrnplw ofk&b 'vis-d-vis ~~s claims. A toaal of (15) had -1s from six (6) diffcmwmmtri& ~~ on the Nim && wm tested k'wwv -'m tested tods ioduded SE-, hammers, screwdriv~plim~~.~~~p~es~~of~gnoupsof~~~werer~acmrdanw to their hpac$ -which is a major proprty ofpmtwion took. The dtssh owed tbat built-in mecbkl properties of these tooh wm Imply controtled by their...
ABSTRACT This work is aimed at determining the feasibility of manufacturing automobile batteries on a small scale ·Ievel. It involves an economic evaluation directed at the typical 12V, 60Ah car battery. A process analysis was done with a view to determining the scalability of the processes. A review of relevant literature gives insights on the product structure and workings, material interactions, process requirements and the various manufacturing strategies and their respective benefits. T...
ABSTRACT The computer-aided software developed in this research work is used in designing cam systems by generating various follower motions and cam profiles. It is highly suited for extensive dynamics, kinematics and geometric design analysis based on some inherent features that are unique. The plate cam with either flat-face or roller followers can be designed. Most of the standard and acceptable cam functions are included such as double harmonic, modified trapezoidal, cycloid, 4-5-6 polyno...
ABSTRACT This study was designed to determine the effects of challenge-based and activity-based learning approaches on technical college students’ achievement, interest and retention in woodwork technology. A pre-test, post-test, non-equivalent control group, quasi-experimental research design was adopted. The study constituted a total number of 122 subjects, 63 for the Challenge based learning, while 59 were for the activity-based learning. Eight research questions and twelve null hypothe...
Abstract Plate washing is a daily activity across the globe which involves a lot of energy to accomplish manually or mechanically. The objective of this work is to design and fabricate a dish washing machine that is efficient and easy to operate. Stainless steel and mild steel was used for the construction of the machine considering their availability, cost reduction and corrosion resistance. The motor used a power of 0.75hp (559.5 W), voltage of 240V and a speed of rotation of “1200 r.p.m�...
Abstract Subsurface oil viscosity data are usually 110t readily available for most reservoirs, as they are expensive to acquire. On the other hand, surface oil viscosity is routinely measured and therefore readily available for all producing wells. A method has been developed for converting the surface viscosity to reservoir viscosity data, using SPDC's "Field A" as a case study. Surface oil viscosity data from all producing wells in "Field A" where collected from SPDC-West Production Chemist...
Abstract This study was designed to determine the effects of field trip and land laboratory activities on students’ achievement and interest in poultry production in Senior Secondary Schools in Nsukka Local government Area, Enugu State. Six research questions were answered while six null hypotheses were tested at a 0.05 level of significance. The study adopted a quasi-experimental design and was carried out in Nsukka, Enugu State. The population of the study was 1,671 senior Secondary Sch...
ABSTRACT The study was carried out to determine the effect of suggestopedia instructional technique on academic achievement, interest and retention of metalwork students of technical colleges. Six research questions were answered while nine null hypotheses formulated were tested at a 0.05 level of significance. The study adopted a quasi-experimental design and was carried out in Lagos State. The population for the study was 410 male and female students. The sample size for the study was 114 ...
ABSTRACT: Safety practices and performance in a brewery industry in Nigeria was evaluated for a period of eight years between 2000 – 2007 using the principles of statistical expectation and efficiency index. The number of prevented accidents and the corresponding values of lives and property saved were estimated annually for the same period of eight years. The type of input resource, total number of input resources, total number of prevented accidents by class, the unit cost of each of the ...
Abstract The study was carried out to develop a training programme in cocoyam production for enhancing job opportunities of youth in South Eastern Nigeria. The study adopted research and development (R & D) design. The study was carried out in the South-East states of Nigeria, namely Abia, Anambra, Ebonyi, Enugu and Imo states. The population of the study was 5075 made up 21 lecturers, 292 extension agents and 4510 registered cocoyam farmers all from South-East Nigeria. The sample for the st...
Abstract Titanium and its alloys are an important group of engineering materials, with a wide range of applications in aerospace, aircraft, automotive, chemical and biomedical industries. They have excellent combination of strength and fracture toughness as well as low density and excellent corrosion resistance but with poor machinability due to their low thermal conductivity and high chemical reactivity with cutting tool materials. In this study, the effects of cutting parameters and tool we...
ABSTRACT Despite the low-level of Technological inputs and assimilation in Nigeria in general, Business operations have benefited considerably from Technology. Technology input haw been in form.of vastly improved communications, power availability, distribution, new tools of machinery for production, and health facilities. In this paper, the situation of Transportation and Food industries are focussed on in respect of great changes that have taken place therein. Suggestion on the practical wa...
ABSTRACT In metal cl.Itting operations, performance of the cutting tool is the major determinant of the productivity, functionality and production cost of the machined component. In this work, the performance of uncoated cemented carbide tools with International Standard Organisation (ISO) designation SNMA 120406 was evaluated for tumitu; of NST 37.2 steel. Turning operations were conducted on M300 /-Iarrison type lathe driven by 3.0 hp Kapak induction motor. The cutting conditions used were:...