African Journals Online

 Journal

 Improvisation Of Laboratory Power Supply For Powering Laboratory Electronic Instruments

 Adenodi, R.A. Iwetan, C.N., Akinluyi, F.O. And Oketayo, O.O.

 2012

The implementation and progress of science and technology education in Nigeria is faced with multidimensional problems especially from the power sector. Power outage, low voltage and over voltage supplies are common phenomena, and many have resulted to using batteries, power inverters and/or generators to generate needed electrical energy in laboratories. Most of these sources and electronic devices are not equipped with over voltage and current limiting protection circuitd which are relevant to the security of the devices and their users. Power supply constructed with 14-pin 724-voltage regulator IC gives output voltage range of 0.5 to 24.0 V and is capable of maintaining a constant voltage irrespective of changes in the load current and unregulated input voltage. 

 School Of Arts And Social Sciences, Adeyemi College Of Education, Ondo

 Others

 Challenges Of The Discipline Of Physics In The Development Process. In: J.S. Babatolu And G. Ikuejube (Eds.) National Security And Resource Management In Nigeria

 F.O. Akinluyi, O.A. Ifedayo, C.N. Iwetan, O.O. Oketayo And R.A. Adenodi

 2011

Before speaking about the role of physics in developing countries, it is more convenient to speak about the background which makes physics and other fields of science to be active, and not passive. For instance, there are many parameters, which l find, from my point of view, very necessary to make the developing process effective in the developing countries. These parameters are enumerated, elaborated and discussed in this paper. 

 Crofes Printing Press

 Others

 Basic Concepts In General Solid State Physics. In: R.O. Oloyede And P.O. Akinbile (Eds.) Contemporary Issues In Science And Science Education II

 F.O. Akinluyi, P.O. Ijila, D.D. Akinwande, O.O. Oketayo And O.A. Ifedayo

 2011

Teaching of General Solid State Physics at undergraduate level requires students to be exposed to some aspects of physics, mathematics and chemistry before they can grasp the understanding of its concepts. Introduction to the basics of General Solid State Physics reduce complexity arising from learning its fundamentals. This paper attempts to address some fundamentals surrounding the course. However, mathematics of Solid State Physics is beyond the scope of this paper. 

 Grace Excellent Publishers

 Journal

 ICT Infrastructure As An Instructional Tool In The Teaching And Learning Of Physics In Schools

 Akinluyi, F.O., Ijila P.O., D.D. Akinwande, C.N Iwetan And R.A. Adenodi

 2011

Information Communication Technology (ICT) is a technological advancement in the contemporary world, whic is of immediate assistance to the students in achieving pre-set educational goals and objectives. This paper showcases the influence of ICT infrastructures on the effective teaching and learning of physics in Nigeria schools. The project suggested ways through which the use of ICT infrastructures in the teaching and learning of physics can be raised to an acceptable standard. 

 The Development Universal Consortia

 Journal

 Groundwater Contamination Mapping Using Electrical Resistivity Method And Inadequate Waste Management Practices In Nigeria

 Akinluyi, F.O., Akinwale, B.F., Alabi, O.O. And Akinnubi, R.T.

 2010

Regardless of the waste management practices adopted arising from the shortfall of indiscriminate dumping of waste/refuse, mankind will continue to be increasingly dependent on surface and groundwater supply to satisfy domestic and industrial needs. A geoelectric survey involving Schlumberger vertical Electrical Sounding (VES) was carried out around refuse dumping site along Laje road Ondo in West Local Government Area of Ondo State. The area is underlain by the Precambrian Basement Complex rock. Maximum of four subsurface layers were delineated which include: topsoil, sandy clay, weathered clayey sand and fresh basement. Overburden thickness in the area is generally very thin. The area is characterized by a thin and shallow clayey aquiferous zones delineated at VES 5, 3 and 2. Groundwater extraction in the area is through hand dug well. This shows that buildings close to VES 4, 3, 2 and 1 are highly susceptible to infiltration of leachate from the dump site compare to VES 5 that is less susceptible to groundwater contamination. Level of groundwater contamination arising from the solid waste leachate is imminent in all the VES. It is suggested that people living around this area should be evacuated and resettled because their live is endangered if they continue to consume water from the dug wells. This study has demonstrated the usefulness of electrical resistivity method as a tool for evaluating extent of contamination and postulate typical waste management model to be adopted based on socio-economic activity so as to impede the rate of endangering water resources. 

 Marsland Press

 Journal

 Controlling Contaminated Fluid From Polluting Groundwater Using Porous Media

 Popoola, O.I., Adegoke, J.A., Alabi, O.O., Akinluyi F.O. And Fayemiwo, K.A.

 2010

The study of movement of underground water helps to predict the flow of contaminated fluid from a solid waste landfill into a portable water supply. Sand samples from river bed were used as stratified porous media and a laboratory experiment was set up to look at the deflection pattern in term of volume of liquid flowing across a unit cross-sectional area per unit time at different angles. Water was made to flow through the inlet and outlet pipes filled with sands of different porosities and the volume of water discharge was determined by volumetric method. A graph of cosine of angle of deflection against porosity ratio gives a relation cos q = 1.98ln r f + 1.13. With this established equation, a stratified porous media of known porosity ratio can be used to control the direction of contaminated fluid in sub-surface layer. 

 Department Of Physics, Adeyemi College Of Education, Ondo

 Others

 Electricity, Magnetism, And Electronics. In: Akinwale, B.F. And Nwankpa, A.C. (Eds). Experimental Physics For Tertiary Institutions

 F.O. Akinluyi, R.A. Adenodi And T.T. Akinrinlola

 2009

The experiments in physics in this book are designed for Pre-NCE and First Degree students. All areas of physics are covered in the experiments, which focus on the acquisition of critical science process skills in this physical science. The standard of the experiments are of the traditional type that expect students to follow routine experimental procedures peculiar to physics, others are of the problem solving type that require the application of the inquiry approach. 

 School Of Science, Adeyemi College Of Education, Ondo

 Journal

 Relevance Of Space Physics To Sustainable Development. Journal Of Science And Science Education

 Akinluyi, F.O., Ifedayo, A.O., Ijila P.O. And Ojo, M.O.

 2008

Observations of the heavens and the earth's immediate environment over the centuries have led to the development of Space Physics, as we know it today. Stars, including our Sun and other heavenly bodies, were the earliest sources observed. From simple observations of the intensities and colours, the light provides information about the object that reflect it or the sources that generate the light. Further analysis provides information on details, such as constitution of planetary atmospheres and types of materials that composes their surfaces. The sparse gas and dust that lies between condensed bodies of the universe can also be detected and identified, as it absorbs and scatter light. Developments in space physics and associated technologies have enabled inward pointing of observational instruments/equipment to facilitate continued surveillance and monitoring of the earth and its natural resources, to support sustainable develpoment. This paper discusses how artificial satellites orbiting around Earth are providing spatial data to support up-to-date and comprehensive information-base so as to facilitate planning and decision-making. 

 Rock View Ltd.

 Journal

 Integrated Geophysical And Geotechnical Investigation Of A Damsite On River Mayo Ini, Adamawa State, Northern Nigeria

 Ajayi, O., Olorunfemi, M.O., Ojo, J.S., Adegoke – Anthony, C.W., Chikwendu, K.K., Oladapo, M.I., Idornigie, A.I. And Akinluyi, F.

 2005

An integrated geophysical and geotechnical investigation was conducted at a proposed damsite along the River Mayo Ini located approximately 10 km southeast of Jada in Adamawa State, Nigeria. The aim of the investigation is to determine the depth to the competent bedrock and other surface engineering/geological conditions, whic may affect the integrity of the proposed dam. The geophysical investigation involved the Schlumberger Vertical Electrical Sounding (VES). A total of 126 VES were carried out along the Main Dam Axis, a Downstream Offset Axis, an Upstream Offset Axis, the Reservoir Floor Axis and a River Channel Axis. The geotechnical investigation involved surface geological mapping and soil/rock coring at nine points along the Main Axis and the River Channel Axis. This was done to provide controls on the geophysical interpretations. The investigation delineated four subsurface layers, which include the topsoil, weathered layer, partly weathered/fractured basement and the fresh basement. Depths to the bedrock are generally less than 5.0 m. The basement relief generally slopes from the valley shoulders into the river valley. Some of the mapped basement depressions correlated into two possible buried ancient stream/river channels. The general characteristics of the subsurface materials show that they are competent and suitable to host a dam. While the configuration of the basement relief may aid groundwater flow into the river channel, the delineated buried river channel and unconfined/confined fractures may act as conduits for anomalous water seepage beneath the proposed dam axis, if not factored in the design of the dam foundation. 

 Bachudo Science Co. Ltd.

 Journal

 Laboratory Measurement And Inversion Of 2-Dimensional Geoelectric Response Of A Hydrocarbon-Impacted Sand Formation

 Olorunfemi, M.O., Olayinka, A.I. And Akinluyi, F.O.

 2001

The environmental impact of oil spills is a major issue and problem in Nigeria presently, especially in the oil-producing communities. As part of a programme to test the application of geophysics as a non-invasive subsurface waste location technique, we have employed laboratory and computer modelling techniques to investigate the usefulness of two-dimensional (2-D) geo-electrical imaging in providing a better understanding of the problem. A simulated oil spill tank has been carefully constructed in the Department of Geology, Obafemi Awolowo University, Ile-Ife. and designed to resemble an oil spill as closely as possible. The tank was of plank and strong enough to withstand the pressure of the sandfill. The interior wall was lined with polythene to prevent seepage of the saturating fluid. The tank was filled with well-sieved river valley sand, saturated with water and the resistivity of the sand taken, this serving as control. The sand was then contaminated with crude oil and the 2-D apparent resistivity pseudosection data measured. A wall effect test, involving pole-pole array, was carried out in order to determine the area within which geoelectric measurements could be taken without significant wall effect. Five electrical traverse lines were established in the tank. Measurements were made with the Wenner, pole-pole, and pole-dipole arrays for electrode spacings 2, 4 and 6 cm along the 5 traverses. In addition, dipole-dipole data were measured for 5 levels of the pseudosection along one of the traverses. The dipole-dipole data were inverted using a Simultaneous Iterative Reconstruction Technique (SIRT) algorithm. The apparennt resistivity maps show that, with any of the four arrays used, the hydrocarbon-impacted sand is identified as a high apparent resistivity anomaly. Inversion of the dipole-dipole data indicates that while the limits of the spill can be accurately defined, its depth extent may be slightly overestimated. In this paper, the usefulness of 2-D geoelectrical imaging as a tool for mapping oil spills has been demonstrated and this has significance for environmental impact assessment in the Niger Delta hydrocarbon province.