639 research outputs found

    Lightweight Concrete Elements from Burnt Palm Nut Shells

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    This paper investigates the characteristiCS . technology and the use of burnt palm ke.r nel shells as a replacement for aggregates 1n light weight concrete The need to find ' alternative sources to imported and expens1ve building matenals for construction led to the investigation of Qurnt palm kernel shells as a poss11;>1e substitute for some aggregates. Investigation into the physical and structural charactenSttcs of the burnt palm k.ernel shells was conducted. The paper was used concrete mi.x 1 :2:4 design. Different tests were also performed on the wet and cured light weight concrete prepared by replacing 0%. 10% and 25% of the fine and coarse aggregates with the shells burnt to 1 00°C. 300°C, 500°C and thos€ shells burnt in the open air. The result indicated that compressive strength of concrete with burnt shells was lower than that of concrete with unburnt shells at the same percentage replacement. The compressive and tensile strength were found to be decreasing with temperature increase of the burnt shells up to 300°C but picked up tremendously with shells burnt to 500°C The result showed that burnt palm kernel shells is a viable substitute for aggregates for light weight concrete in floors. partitions. insulated panels and lawn tennis concrete floor

    Impact of the Nodal and Internodal Sections on the Strength Properties of Bamboo

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    The structural use of bamboo as a material of construction demands for the deeper study of the mechanical properties of the culm as regards its nodal and internodal sections. Most literatures have concentrated majorly on the use of bamboo as reinforcement in low modulus concrete with little or' no regard on the other factors that affect its structural performance This study therefore investigates the influence of nodal and internodal sections on the strength properties of bamboo The results indicate that the average compress1ve stress was 59.4 N/mm= for the internodal section-and 66 .09 N/mm- for the nodal section. The average flexural stresses were 35.78 Nmm- and 46.44 N/mm: respectively for the internodal and nodal sections the average modulus of elasticity was between~ 2.68 and 8.22. x "164 N/ mm= for the nodal section. It is concluded that the strength of bamboo culm is a function of the nodal and internodal sections and that nodal section has higher strength when compared with the internodal sectio

    Effects of Sowing Date on Yield and Yield Parameters of Some Groundnut (Arachis hypogaea L.) Cultivar Under Rainfed Condition in Ogbomoso, Nigeria

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    The study examined the variation in number of flowers, number of nodules, number of pods and seed yield of some groundnut cultivar as affected by planting date in Ogbomoso, Oyo state, Nigeria under rainfed condition. This is necessary to determine when moisture availability will be at optimum starting from the onset of rainfall, to avert loss which could arise from improper timing of planting. Teaching and Research Farm of Ladoke Akintola University of Technology Ogbomoso with average annual rainfall of 1000 mm and temperature ranging from 28 to 33 ºC was used for the experiment. A 4 by 4 factorial experiment with four varieties of groundnut (three improved varieties Samnut-10, Samnut-23, Samnut-22 and Kampala (local variety)) and four planting dates of a week interval (29th April, 6th May, 13th May and 20th May, 2016) were tried without chemical amendment. All the parameters evaluated were affected by the planting date.  Samnut-23 and Samnut-10 planted on 29th April produced the highest mean number of flowers (15.67) and number of nodules (116.00) respectively which were significantly higher than others. Cultivar type did not have significant influence (p≤0.05) on the growth parameters. However, number of pods and seed yield was influenced by the cultivar. The highest number of pods (103.00) from this study was produced by Samnut-23 planted on 29th April. It was observed that the high number of pods produced by Samnut-23 did not translate to seed yield because Kampala produced the highest seed yield (73.51 g/plot) which was significantly higher than yield from other cultivars tried. Groundnut cultivars responded differently to planting date tried, with best planting period being early month of May. It was observed that all the cultivars produced their least seed yield when planted towards the end of month of May, therefore, should be discouraged for the tried cultivars at the trial location. KEYWORDS: Sowing date, Rainfed, Pod, Seed yield and Groundnut Production DOI: 10.7176/JNSR/9-18-06 Publication date:September 30th 201

    Assessment of Outsourcing on Project Delivery in Ministry of Works, Land and Housing, Ondo state, Nigeria

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    Presently, the construction industry in Nigeria is undergoing very rapid change and explosive growth and it has been argued that outsourcing strategies adopted have contribution to the growth of the sector due to its relevance and potentials for the economy. As such, this study tried to assess the significant effects of outsourcing on project delivery in ministry of works, land and housing, Ondo State, as regards cost reduction, timely delivery of projects and quality of projects. About 60 questionnaires were administered, 55 were returned and analyzed to get primary data that treated appropriate research questions and the hypothesis was tested accordingly. The study found that outsourcing so far has positively contributed to the delivery of projects in Ondo State ministry of Works and the results indicated that the ministry has benefited from outsourcing its business process to reduce cost of operation, ensure timely delivery of projects and also increase the quality of their projects

    Support Vector Motion Clustering

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    This work was supported in part by the Erasmus Mundus Joint Doctorate in Interactive and Cognitive Environments (which is funded by the EACEA Agency of the European Commission under EMJD ICE FPA n 2010-0012) and by the Artemis JU and the UK Technology Strategy Board through COPCAMS Project under Grant 332913

    Assessing the challenges impeding effective primary health care delivery in Southwest Nigeria

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    This study seeks to investigate the challenges impeding healthcare delivery in selected Primary Health Care facilities in South West Nigeria. A quantitative approach was adopted with purposive sampling of 241 health workers across PHC facilities in South West Nigeria. Data was analysed using the Statistical Package for Social Science (SPSS version 22). The study revealed seven main challenges which included shortage of manpower, inadequate medical equipment, lack of employee motivation, lack of basic infrastructure, unavailability of drugs, poor funding and cultural belief. Consequent upon these findings, government interventions such as employment of more skilled personnel, improved working conditions, employee motivation, provision of basic facilities/equipment and better financing, is required to enhance the quality of service and sustainability of PHC in Nigeri

    Thermodynamic analysis of a variable viscosity reactive hydromagnetic couette flow within parallel plates

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    This investigation is to consider the impact of a temperature-dependent variable viscosity of a reactive hydromagnetic Couette fluid flowing within parallel plates. The variable property of the fluid viscosity is thought to be an exponential relation of temperature under the impact of magnetic strength. The differential equations controlling the smooth movement of fluid and energy transfer are modeled and solved by using the series solution of modified Adomian decomposition technique (mADM). The outcomes are shown in tables and graphs for different estimations of thermophysical properties present in the flow regime together with the rate of entropy generation and irreversibility distribution outcome. Keywords: Reactive fluids, Couette Flow, variable viscosity, hydromagnetic and modified Adomian decomposition method (mADM)

    Modeling Socioeconomic Factors Affecting Age at Marriage among females in Kogi State, Nigeria

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    This paper is aimed at determining the effect of socioeconomic factors such as cultural background, level of education and religion in relation to age at marriage among women in Kogi State Nigeria. The survey area is made up of diverse ethnic groups with three major languages. The study reveals that education is an important factor which increases the age at marriage in the State. The study equally proved that religion and cultural background does not affect age at marriage among women in Kogi State, Nigeria. A Saturated one-way and two-way model was fitted to reveal the behavioral pattern of the distribution. Key words: Socioeconomic, Modeling, Marriage, Saturated, Analysis

    Statistical Analysis of Some Socioeconomic Factors Affecting Age at Marriage among Males in Kogi State, Nigeria

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    This study is aimed at investigating the relationship between age at marriage and educational attainment, religion and cultural background among males in some parts of South Western Nigeria. A saturated one-way and two-way model was proposed for the study. Level of educational attainment and religion was established to have significant relationship with age at marriage while senatorial differences do not have any statistical significant relationship with age at marriage in the area surveyed. Key words: Model, Saturated, Marriage, Senatorial, One-way, Two-way, Effect
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