Effects of chemical reaction, thermal radiation, internal heat generation, Soret and Dufour on chemically reacting MHD boundary layer flow of heat and mass transfer past a moving vertical plate with suction/injection

In the present analysis, we study the two-dimensional, steady, incompressible electrically conducting, laminar free convection boundary layer flow of a continuously moving vertical porous plate in a chemically reactive medium in the presence of transverse magnetic field, thermal radiation, chemical reaction, internal heat generation and Dufour and Soret effect with suction/injection. The governing nonlinear partial differential equations have been reduced to the coupled nonlinear ordinary differential equations by the similarity transformations. The problem is solved numerically using shooting techniques with the sixth order Runge-Kutta integration scheme. Comparison between the existing literature and the present study were carried out and found to be in excellent agreement. The influence of the various interesting parameters on the flow and heat transfer is analyzed and discussed through graphs in detail. The values of the local Nusselt number, Skin-friction and the Sherwood number for different physical parameters are also tabulated. Comparison of the present results with known numerical results is shown and a good agreement is observed

Heat and Mass Transfer for Soret and Dufour’s Effect on Mixed Convection Boundary Layer Flow over a Stretching Vertical Surface in a Porous Medium Filled with a Viscoelastic Fluid in the Presence of Magnetic field

Thermal-diffusion and diffusion-thermo effects on combined heat and mass transfer on mixed convection boundary layer flow over a stretching vertical surface in a porous medium filled with a viscoelastic fluid in the presence of magnetic field is investigated. The partial differential equations governing the problem have been transformed by a similarity transformation into a system of ordinary differential equations which are solved numerically by using the shooting method with sixth-order of Runge-Kutta technique which are compared with Homotopy Adomian’s Decomposition Method (HAM) for special case when magnetic field parameter is zero For fluids of medium molecular weight (H2, air), profiles of the dimensionless velocity, temperature and concentration distributions are shown graphically for various values of parameters embedded in the flow model. Finally, numerical values of physical quantities, such as the local skin friction coefficient, the local Nusselt number and the local Sherwood number are presented in tabular form

Effectiveness of use of information and communication technologies (icts) by extension agents and arable crop farmers in ido loal government area, oyo state, nigeria

The study was undertaken to ascertain effectiveness of use of ICTs by extension agents and arable crop farmers in Ido local government area Oyo State. Multiple stage sampling procedure was used to select 105 respondents for the study. Data were collected from the respondents through the use of structured questionnaire.. Descriptive statistics such as; mean, frequency table, and percentage were used to analysed data while inferential statistical tools such as Chi-square and Pearson Product Moment correlation (PPMC) were used to tested the hypotheses of the study. The result of the study showed that majority of the respondents were in the age bracket of 31-40 years, which could be categorized as adults, and more of them were males, while majority of them were married. Result revealed the level of ICTs used by extension agents for arable crop farmers were radio (97.1%), mobile phone (92.4%) and internet (81.9%).The result further shows major constraints militating the effectiveness of use of ICTs were network problem in the study area. There is no significant relationship between constraint and level of ICTs used by the arable crops farmer in the study area. It is therefore recommended that government should ensure that farmers should have access to and use ICTs by putting policies in place to ensure all rural area have access to ICTs tools ,also  awareness on the use of ICTs should be intensify among arable crop farmers. &nbsp

PERFORMANCE EVALUATION OF ENERGY-SAVING BULBS IN SELECTED NIGERIAN LOCATIONS WITH ARTIFICIAL NEURAL NETWORK MODELLING

The performance evaluation of energy-saving bulbs in the Nigerian market is crucial in assisting energy auditing, which is beneficial to producers and consumers of electricity. Specifically, the high-power bills issued monthly by Electricity Distribution Company in most parts of Nigeria have made Nigerians in our various domestic homes embrace the latest lighting technology that consumes less energy.In this study, lighting system data were obtained from twenty-four households from different geographical zones in Nigeria. The performance evaluation of compact fluorescent light(CFL) bulbs was investigated and the observation was predicted with artificial neural networks (ANN) to enhance informed policy formulation and decision-makingResults showed that CFL bulbs givehigh-quality light that is cost-effective and environmentally friendly. ANN predicted the observation with high accuracie

Effect of Climate Change on Arable Crop Farmers Productivity in Ibarapa Centra Local Government Area of Oyo State Nigeria

The study was an analysis of the Effect of climate change on arable crop farmers’ productivity in ibarapa central local government of Oyo state, Nigeria.  Primary data were collected using structured interview guide, administered on 100 arable crop farmers using multistage sampling technique. Data collected were analyzed using descriptive statistics (frequency and percentage) and inferential (partial correlation) statistical tools. The result showed that the mean age was 47.6years while 97% were married. However 97.00% of the arable crop farmers reported to have had malaria attack occasionally within the last10 years and 83.00% in the last five years  while 64% reported malaria occurrence within the last one year.Majority (83.00%) of the respondent stated that erratic rainfall as compared to other causes  had more effect on their productivity while just a few (7.00%) of the respondent claimed that low heat was the cause of their low productivity. The hypothesis tested revealed that the socioeconomic characteristics of the arable crop farmers such as age (0.7490), sex (0.3200), household size (0.4580), income (0.5500) and educational status (0.3240) had significant positive relationship with their levels of productivity. It was recommended that the arable crop farmers should form farmers association to pool resources together to acquire irrigation gadgets so as to alleviate the problem of erratic nature of rainfall in the area and Nigerian Meteorological Agency (NIMET) should be more alive to her weather forecast responsibilities in the area of using diverse languages of the people in the Nigerian agricultural zones. Keywords:Climate Change, Arable crop, Farmers, Productivity

Combined Effect of Radiant Heat, Local Nusselt Number and Skin Friction Coefficient of a Third Grade Fluid through a Channel Flow in a Saturated Porous Medium

This paper investigates the combined effects of radiant heat, local Nusselt number and Skin friction coefficient on a channel flow of third grade fluid in the presence of saturated porous medium. It is assumed that the fluid has temperature-dependent variable viscosity and thermal conductivity. The non-linear governing differential equations are obtained and tackled numerically using Spectral element technique and C++ programming language. Increase in the values of radiation parameter and third grade material parameter consequently increase the local Nusselt number and skin friction coefficient. Graphical results showing the effects of various physical parameters are presented and discussed quantitatively. It is concluded that Williamson’s fluid parameter served as a cooling factor in diverse improved technological processes in order to avoid different machines from overheating and enhance their efficiencies

Analyses of Willingness to Practice Agriculture as Enterprise among Students of Tertiary Institutions in Ibadan, Oyo State

This study investigated willingness to practice agriculture as enterprise among students of tertiary institutions in Oyo State. A Multi-stage sampling technique was used to elicit data from 112 selected respondents in the study area. Data were collected using a well structured questionnaire and analyzed with the use of descriptive (frequency counts, percentages, and mean) and inferential statistic (Chi-square and Pearson Product Moment Correlation). The results showed that majority of the respondents were within the age range of 21-25 years, with majority males, whom were single in the study area. Furthermore, results revealed that majority of the respondents had low interest in agricultural enterprise preference and high constraint associated with respondents willingness to engage in agricultural enterprise in the study area. Majority of the respondents had positive willingness to practice agricultural enterprise in the study area. There was significant relationship between selected socio-economic characteristics of the respondents except Gender and Marital status. It is therefore recommended that government should motivate agricultural students by providing Youth Empowerment programmes and services directed to improve their willingness to engage in agricultural enterprises