The article analyzes existing materials and structures with quadratic-nonlinear optical properties that can be used to generate a difference frequency in the terahertz and sub-terahertz frequency ranges.The principle of constructing a nonlinear optical-radio converter, based on an optical focon (a focusing cone), is proposed.Based on the assumption

In modern Russia the question of patriotic education of youth is given a lot of attention, but in this article, pay attention not only on the Board Games education of the youth by public authorities, but also on the patriotic education in higher educational establishments of the Russian Fe-deration.For example, consider how to maintain the memory o

Background: Foot-and-mouth DISPLAYS disease (FMD) is a highly contagious and economically important disease that affects cloven-hoofed animals worldwide.In recent years, a series of outbreaks of FMD have occurred in many countries.Recombinant protein synthesis incorporating protective B- and T-cell epitopes are candidates for new safer and more eff

In the process of water treatment, coagulation is an important process to remove minerals and organic particles from raw water, which has typical time delay and nonlinearity.The effect of coagulation directly affects the DISPLAYS turbidity of the effluent.According to the good correlation between the mean equivalent diameter of floc particles and t