Localized nonlinear excitations in diffusive memristor-based neuronal networks.

We extend the existing ordinary differential equations modeling neural electrical activity to include the memory effect of electromagnetic induction through magnetic flux, used to describe time varying electromagnetic field. Through the multi-scale expansion in the semi-discrete approximation, we show that the neural network dynamical equations can be governed by the complex Ginzburg-Landau equation. The analytical and numerical envelop soliton of this equation are reported. The results obtained suggest the possibility of collective information processing and sharing in the nervous system, operating in both the spatial and temporal domains in the form of localized modulated waves. The effects of memristive synaptic electromagnetic induction coupling and perturbation on the modulated action potential dynamics examined. Large electromagnetic induction coupling strength may contribute to signal block as the amplitude of modulated waves are observed to decrease. This could help in the development of a chemical brain anaesthesia for some brain pathologies

Assessment of the activity of the mbalmayo thermal power plant on groundwater quality

Abstract Groundwater is essential for daily life in Cameroon, but pollution sources can harm its quality through infiltration and dispersal of contaminants in the ground. This study focuses on estimating groundwater quality near the Mbalmayo Thermal Power Plant using a predictive model combining genetic algorithms and neural networks. The genetic algorithms were used to optimize the objective function, while neural networks learned the data to predict concentration values. From January 2017 to December 2021, several moisture content values were experimentally determined using collected dried and weighed soil samples. The results showed that moisture content varied from 1 to 82%. During this study period, the model takes into account the water content of the soil, porosity and permeability which have the same effect on the concentration level of the fuel oil in the groundwater. The average concentration of fuel oil was below 50 mg/l, which is the World Health Organisation standard However, there is a risk of groundwater pollution by fuel oil in the event of heavy activity at the Mbalmayo thermal power plant in the 0-445 m range. For protection during this period, the results show that the installation of populations on a perimeter located beyond 445 m and the construction of a water purification station are recommended. The results are decision support tools for the authorities