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Ekiti State, Nigeria

Mmaduabuchukwu M.,Federal University, Oye-Ekiti
Tropical Agriculture

This study examined hectarage and output responses of maize to market liberalization, price, price risk and financial support. The study covered a period of 40 years from 1970 to 2009. Secondary data were used. Data were analysed using descriptive statistics and multiple regressions. The descriptive statistics results showed that price ranged from USS 96.90 to 2039.37 per tonne and the price risk ranged from USS 444.71 to 740.78 per tonne. The descriptive statistics results showed that the output of maize ranged from 695.20 to 10959.00 tonnes, while the hectarage ranged from 700.40 to 3481.28 thousand hectare. Positive determinants of output and hectarage of maize include liberalization policy, maize price and the price risk. The sensitivity analysis showed that increase in price and price risk will continue to be major determinants of hectarage and output of maize. Government should continue to increase agricultural credit since they had positive impact on maize cultivation. © 2016 Trop. Agric. (Trinidad). Source

Fayose F.,Federal University, Oye-Ekiti | Huan Z.,Tshwane University of Technology
International Journal of Food Science

Heat pump technology has been used for heating, ventilation, and air-conditioning in domestic and industrial sectors in most developed countries of the world including South Africa. However, heat pump drying (HPD) of fruits and vegetables has been largely unexploited in South Africa and by extension to the sub-Saharan African region. Although studies on heat pump drying started in South Africa several years ago, not much progress has been recorded to date. Many potential users view heat pump drying technology as fragile, slow, and high capital intensive when compared with conventional dryer. This paper tried to divulge the principles and potentials of heat pump drying technology and the conditions for its optimum use. Also, various methods of quantifying performances during heat pump drying as well as the quality of the dried products are highlighted. Necessary factors for maximizing the capacity and efficiency of a heat pump dryer were identified. Finally, the erroneous view that heat pump drying is not feasible economically in sub-Saharan Africa was clarified. © 2016 Folasayo Fayose and Zhongjie Huan. Source

Yahya W.A.,Kwara State University | Falaye B.J.,University Of Ilorin | Oluwadare O.J.,Federal University, Oye-Ekiti | Oyewumi K.J.,University Of Ilorin
International Journal of Modern Physics E

By using the Nikiforov-Uvarov method, we give the approximate analytical solutions of the Dirac equation with the shifted Deng-Fan potential including the Yukawa-like tensor interaction under the spin and pseudospin symmetry conditions. After using an improved approximation scheme, we solved the resulting schrödinger-like equation analytically. Numerical results of the energy eigenvalues are also obtained, as expected, the tensor interaction removes degeneracies between spin and pseudospin doublets. © 2013 World Scientific Publishing Company. Source

Jimoh A.Y.,University Of Ilorin | Ojo O.J.,Federal University, Oye-Ekiti
Arabian Journal of Geosciences

The Gongola Basin forms one of the inland Cretaceous to tertiary sedimentary basins in Nigeria with relatively unknown petroleum system. In this study, the investigated source rock intervals of the Maastrichtian Gombe Formation are located at the Maiganga coal mine, near Gombe, Gongola Basin, Nigeria. The exposed part of the mine consists of about 35-m thick coarsening upward section with the basal part made up of coal and shale interbeds while the upper part consists of siltstone and sandstone and probably deposited in fluvio-deltaic environment. The coal and interbedded shale appear most prospective source rock facies in the formation and were evaluated with respect to their hydrocarbon source rock potential. The organic geochemical results showed high TOC for the coals (37.71–65.29 wt%) and moderate organic carbon concentration (1.19–4.81 wt%) for the shales. S2 values ranges from 57.96 to 103.21 mgHC/g rock and 0.51–6.22 mgHC/g rock for the coal and shales, respectively. The HI is less than 200 mgHC/gTOC in all the coal and shale samples suggesting Type III kerogen and predominant plant contributions from terrestrial sources. Consequently, gaseous hydrocarbon potential is exhibited in the source beds. The organic petrography shows vitrinite as dominant maceral followed by inertinites and liptinites with inorganic minerals like pyrite and kaolinite. The Tmax is less than 435 °C in all the samples indicating pre-oil window stage; this is corroborated by the Romax value ranging from 0.45 to 0.55 %. Plot of PI against Tmax indicates low level organic matter conversion while the vitrinite reflectance values suggest a sub-bituminous coal. The study suggests that the investigated coal and shale samples constitute good source rock and have potential for gas. The generally low HI in the coals and the associated shales indicate more allochthonous and hydrogen poor organic matters in the source beds. Maceral composition of the coals suggests wet swamp environment and predominance of arborescent vegetation type. At present level, the organic matters are immature to marginally mature deeper level equivalents might have generated gas. © 2016, Saudi Society for Geosciences. Source

Oyewumi K.J.,University Of Ilorin | Falaye B.J.,University Of Ilorin | Onate C.A.,University Of Ilorin | Oluwadare O.J.,Federal University, Oye-Ekiti | Yahya W.A.,Kwara State University
International Journal of Modern Physics E

In recent years, an extensive survey on various wave equations of relativistic quantum mechanics with different types of potential interactions has been a line of great interest. In this regime, special attention has been given to the Dirac equation because the spin-1/2 fermions represent the most frequent building blocks of the molecules and atoms. Motivated by the considerable interest in this equation and its relativistic symmetries (spin and pseudospin), in the presence of solvable potential model, we attempt to obtain the relativistic bound states solution of the Dirac equation with double ring-shaped Kratzer and oscillator potentials under the condition of spin and pseudospin symmetries. The solutions are reported for arbitrary quantum number in a compact form. The analytic bound state energy eigenvalues and the associated upper- and lower-spinor components of two Dirac particles have been found. Several typical numerical results of the relativistic eigenenergies have also been presented. We found that the existence or absence of the ring shaped potential has strong effects on the eigenstates of the Kratzer and oscillator particles, with a wide band spectrum except for the pseudospin-oscillator particles, where there exist a narrow band gap. © World Scientific Publishing Company. Source

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