The 88th volume of the International Journal of Physics, Chemistry and Astronomy is devoted to elementary particle physics and nonlinear optics issues. Analytical solving of the 3-dimensional modified Schrodinger equation using the generalised Bopp’s shift method and standard perturbation theory and analysis of the application of a model involving two coupled anharmonic electronic and ionic oscillators to estimate the second harmonic generation and linear electro-optic susceptibilities of InAs crystal are the topics of this issue.

We are glad to present to readers the 22nd volume of the International Journal of Engineering and Applied Technologies. Analysis of technology for rubberised concrete creation and its mechanical properties, as also quantitative and qualitative evaluation in MATLAB of image denoising using the proposed adaptive neuro-network-fuzzy processing system, are topics of this journal issue.

The 84th volume of the International Letters of Natural Sciences contains articles that present the research results on the harmful effect of low doses of a widely used pesticide imidacloprid on the earthworm as an important component of soil biota and the impact of different irrigation levels and spraying with agrispon and their interaction on the productivity of garlic plants.