No abstract

In this paper, we present a reliable combination of Aboodh Transform and Homotopy perturbation method to determine the exact solution of one dimensional Burgers equation which is a nonlinear partial differential equation. Some cases of one dimensional nonlinear partial differential equations are considered to illustrate the capability and reliability of Aboodh Homotopy perturbation method. We have compared the analytical solution obtained with the available Laplace decomposition method. The solution which is found to be exactly the same. The result revealed that the combination of the Aboodh Transform and homotopy perturbation method is quite capable, practically well appropriate for use in such problems. The method is tested on three examples and results show that the new method is more effective and convenient to use and high accuracy of it is evident.

A modified system of nonlinear fractional-order differential equations become used to classify humans of various personalities and different Impact Factors of Memory (IFM); with unique set of model parameters. The model was used to interpret and predict the functions of the union of various people with external circumstance(s) and adapted to neighborhood environment in which the statistics collections were achieved to analyze numerous measures affecting marriages, unique challenges in marriage and associated occasions were investigated through the use of questionnaire. Data had been analyzed and the outcomes have been carried out as parameters to validate the model. Adams Predictor-Corrector Method was used to test the chaoticity of the system and it was confirmed via numerical simulations. Numerical simulation outcomes had been presented to reveal the effectiveness of the model and the accuracy of the statements established. The mathematical information implied by the model unveil an underlying mechanism which can give an explanation for couple disruption in relationships that were initially deliberated to remain all the time. Despite the terrible aspects of relationships, some human beings were still satisfied in their intimate members of the family. The study was addressed on a field survey (use of questionnaires) and with the aid of interrogating the members one on one. A feasible path for future work is the choice to attain balance through modelling and to validate the results with the aid of numerical simulations.

In developing countries, electronic waste is a subject of concern in the environmental challenge due to the import of electronics that are not useful from developed countries. The developed country exports the waste as a source of donation to the developing country but the majority of those electronics are waste that contains toxic metals which are harmful to human health. This research work assessed electronic dumpsite to detect the concentrations of heavy metals present in the soil and around the dumpsites. Three dumpsites were considered in the Odogbolu Local government area of Ogun State where the soil samples in the sites were tested to know the concentration of heavy metals present which constitutes an environmental hazard to both human beings and the ecosystem. This was compared with a control that was taken from an electronic waste free site. The atomic absorption spectrometer (AAS) was used for the analysis and the heavy metals analysed were Cadmium (Cd), Copper (Cu), Chromium (Cr), Zinc (Zn), Nickel (Ni), Lead (Pb), Cobalt (Co), Iron (Fe) and Arsenic (As). Our findings show that zinc and iron exist in the soil at high concentrations. When the data compared with WHO’s standard confirmed that Zinc, Iron, and lead are of higher concentration in the samples. However, zinc intake beyond the permissible limits produces toxic effects in the immune system, iron causes nausea and stomach pain while lead causes physical disorders.

This study aims to investigate the influence of SILAR cycle on the energy bandgap of Iron Copper Sulphide (FeCuS) thin films deposited on soda-lime glass substrate (SLG). A Successive Ionic Layer Adsorption and Reaction (SILAR) method is one of the chemical methods for making uniform and large area thin films, which is based on immersion of substrates into separately placed cationic and anionic precursors. The technological importance of chemically deposited iron copper sulphide (FeCuS) using SILAR technique vis-à-vis the effect of SILAR cycle on the energy band gap of the deposited thin films has not been unraveled. Thin films of Iron Copper Sulphide were grown on soda-lime glass substrate (SLG) by a simple solution based Successive Ionic Layer Adsorption and Reaction (SILAR) technique at room temperature (300 K) with EDTA, TEA and NH 4 OH as complexing agents at different SILAR cycles (20, 30 and 40 cycles) of deposition. The thin films grown were characterized using Avantes UV-VIS spectrophotometer (Avalight-DH-S-BAL) in the wavelength range 200-1000nm and Four Point Probe machine (Keithley 4ZA4 2400 Sourcemeter, manufactured by Tektronix Company). The optical properties considered revealed high absorbance and reflectance but low transmittance in the UV region; low values of absorbance and reflectance accompanied with high transmittance in the VIS region. Moreover, the resistivity of the grown thin film varied from 9.480 x 10 6 Ωm to 4.366 x 10 7 Ωm in order of increasing SILAR cycle, direct band gap of 3.76e V, 3.51e V and 3.42e V were obtained. These properties suggest that the films are suitable for solar cell and optoelectronic applications.