Engineering

Research Papers/Topics in Engineering

Species Selectivity For Charcoal Production In Three Ecological Zones Of Nigeria

ABSTRACTSeveral factors influence the quantity of charcoal production in different parts of Nigeria. The study investigated species selectivity for charcoal production in three ecological zones of Nigeria. Data were obtained through the use of structured interview schedule administered to three hundred and twenty seven respondents selected through snowball. The data were subjected to descriptive and analysis of variance. The results show that the mean age of respondents was 44, male (88.1%), ...

A Correlation For Predicting The Viscosity Of Nigerian Crude Oils

AUST.RACTAn -elnpTricaZ'-eq"uarlon that could be used forpredicting the viscosity of Nigerian crudes ispresented in this paper.The correlation uses oil specific gravity as the maincorrelating parameter, and also incorporates theeffects of reservoir pressure, temperature and oilformation volume factor. 'i 'i _. .Dcua from well over 400 samples of Nigerian crudeswae used for developing the correlation, with mostsamples however, from reservoirs alar abovesaturation pressure. The results show how...

The Sequence Dependent Machine Set-Up Problem: A Brief Overview.

ABSTRACTThe Sequence Dependent Machine SetupProblem (MSP). a class of difficult problems incombinatorial optimization that is representative ofa large number of important scientific andengineering problems, has been attracting muchattention in recent times. In this study. literatureand historical reviews of the MSP were carriedout. Some recent developments were reviewedwhile possible future research directions werealso highlighted.

Effects Of Cane Peeling And Aqueous Extraction On Compatibility Of Two Rattan Species With Portland Cement

ABSTRACTRattan cane is a relatively abundant lignocellulosic in Africa and Asia that could be used for wood-cementcomposite production. However, rattans tend to inhibit cement setting. This study investigated the effects ofcane peeling and aqueous extraction on maximum hydration temperature (Tmax) and setting time (tmax) rattancement-water systems using Calamus deerratus and Lacosperma secundiflorum rattan species. Peeling wasdone manually to remove the silified epidermis before hammer-millin...

Carbontl V) oxide Capture anti Sequestration in Nigeria: Prospects and Challenges

AbstractThe capture and storage 0/ carbo II dioxide (eeS)produced durtng the combusuon of fossil fuels 110\1·offers one option/or attaming large scale reductions inthe enusstons of greenhouse gases and thus. promote aclean environment. It IS 1101l' becoming clear that eestechnologies could promote the use or consumption offossilfuels than otherwise previouslv thought.Tills paper presents an OI'er\,le\l" of the techniquesInvolved 111 the capture and sequestration ofcarbondioxideic'Oi). The op...

Control of Chaotic Oscillation and Response Charaterisation in Duffing Oscillator Using Vibration Absorber

Abstract This work investigated the control of chaotic behavior of a harmonically perturbed DufTing Oscillator usingvibration absorber. The system of two degrees of freedom governing equations were simu Eated nu rner i~allyu sing classicalfourth order Runge-Kutta algorithm for a constant time step. The solution time history, phase plots and Poincare maps wereusd to validate tbe simulation. Essentially, the details of the' Poincare map were used numerically to determine theperiodicity ofDuffin...

Design and Prototype Development of a Mini-Electric Arc Furnace

ABSTRACTElectric arc furnaces (EAF) have the capabilities required for furnaces used for metallurgical research. An electric arc furnace was designed and constructed to melt approximately 5kg of steel/cast iron scraps, using locally produced Soderberg electrodes. Tests carried out showed that it required about 60 minutes to heat up the furnace to the melting temperature of cast iron (1150C – 1400C). It took about 95 minutes to melt the first charge of 2kg resulting in a melting rate of 21.0...

The Effect of Tribological Processes on Productivity: A Case Study of Industries in Ibadan Metropolis of Nigeria

ABSTRACTThis study analyzed the connection between tribological and other forms of processes in manufacturing industries to productivity in such outfits. Results from the study showed that 54% of the visited industries recorded the highest hours of downtime due to tribological processes, while,15% and 31% of the industries had the highest downtimes hours resulting from electrical and other processes respectively. Also 23% of the total industries were observed to have more electrical faults, 3...

Application Of A Neurofuzzv Mathematical Model In The Development Of A Local Oven Design

ABSTRACTThis .paper presents a contribution on the development ot a,neurofuzzy mathematicaJ model thataids if? captunnq and analyzing the, various parameters iri;oven design. The oven 'was designed~pecif.ically,for domestic and commercial baking: operations, The neurofuzzy methodolOgy was usedto requlate the oven baking temperatures to acceptable standards. Particular use was made 'ofneurofuzzy model since it is animprovement on the process design. The work.was motiyatedbythe need fm· a .rno...

Assessment Of Noise Levels Generated In Swine Production Units In Ibadan, Nigeria

ABSTRACTThe increase in pork consumption globally in recent times has led to a corresponding increase in pig productionwith more people being employed in the industry to provide the needed services. Pigs are known to generate a lot of noisewhich could constitute a potential health hazard and against which remedial measures must be taken. The establishment ofthe levels of noise generated in piggery production units and their possible consequences on the workers in such units wasthe main object...

Analysis Of Traffic Flow On Selected Two-Lane Highways In Ibadan Metropolis

ABSTRACTTraffic congestion is a common feature on highways in many cities of theworld, including Ibadan, Nigeria. Previous studies have shown that severalmathematical traffic flow models developed to analyse congestion cannot be easilygeneralised or adapted to varying situations. In addition, validation errors of somemodels are as high as 60.0 %. In pursuit of the objective of minimising trafficcongestion in parts of the Ibadan metropolis, headway simulation models weredeveloped for the analy...

A Correlation of Oil Recovery Factors for Water-Drive Reservoirs in the Niger Delta

A,s i.mpI e correlation has been .developed for estimating primary"recovery facto;rs for Niger Deltaoil reservoirs~The correlation,. which was developed, from data collected across the Niger Delta,'is valid for reservoirs with strong, wa~ter d'r Lves... " I~, ' ,Only two major parameters are r equi r-ed ,for 'the recovery factor"calculations . in this" work, ',unlike other multi-parametercorrelations. This 'makes t.hLs rco.rr'eLat.Lonvery easy to apply. Anexpression has also beeri included fo...


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