Our results suggest that APOE and ACE genotypes may be independent risk factors for late-onset AD, but the ACE association needs to be confirmed in independent samples in which the time and extent of vascular cofactors can be assessed.

No abstract

No abstract

The article provides data on the generation and consumption of electricity by a wind farm. To maintain the operability of the wind farm, it is connected to the general grid of the power system, not only for the output of generated electricity, but also for the consumption of the necessary electricity to start the operation of wind turbines. Electricity generation, payback and net profit of a wind power plant of 12 wind turbines were estimated. Subject of study. Wind power plants and their efficiency. Materials and methods. The theoretical and methodological basis is the works of domestic and foreign scientists in the field of wind energy. In the work, analytical research methods were used, including predictive calculation of the annual energy production of wind turbines. Conclusions. The instability of electricity generation using renewable energy generating units is a serious problem that affects the cost of energy produced. According to the calculations, in 14 years, provided the electricity price is equal to 1.8 rubles, the power plant will recoup the investment and begin to generate net income. The correlation coefficient was determined, which was 0.94.

No abstract

The problem of reactive power compensation, which includes many tasks, was substantiated in the work. Taking into account a number of specific problems of reactive power compensation and analysis of various electrical systems, an effective method of the calculation of the steady-state operation of the electrical network, on the basis of which the program “KRM_2021V7” was developed, is proposed. The method of nodal voltage, which was accompanied by the compilation of the system of equations and schematic matrices, among which the matrix of nodal conductivities and nodal loads were distinguished, is considered. An algorithm for finding optimal solutions for reactive power compensation is formulated and developed. Also, the work explains the use of genetic algorithms of mutation and population to find optimal solutions. The result of the calculation of losses in power lines for the considered electrical network is given.

No abstract

No abstract