The Theoretical Basis of Soybean Cutting Process and Knife Selection

This scientific research presents that a theoretical analysis of the methods and forces involved in the soybean seeding process. Detailed information on the projection of forces, the effect of forces on the working body of the soybean seeding device is given

Structure and Properties of Oil Compositions

The article analyzes the structure and properties of oil compositions. Theoretical ideas about oil dispersed systems, options for controlling phase transitions, balances of intermolecular interaction forces, and methods for achieving the active state of raw materials through various types of influences on it are presented, which makes it possible to find practical ways to optimize technological processes. These principles are stated in relation to the processes of primary oil refining, namely, demulsification and direct distillation of oil

The study of supramolecular structure of asphaltenes by atomic force microscopy

This work was supported by Russian Foundation for Basic Research under grant No. 17-42-020616

RUSSIA-CHINESE COOPERATION IN THE SCOPE OF INNOVATIVE BUSINESS PRO-JECTS, UNDER THE BUSINESS PLATFORM OF CHINESE UNIVERSITIES

The Chinese government has invested considerable resources to the development of innovative ability and skills of students with a view to create competitive advantages for their goods on the world and inner market, and increase social welfare by moving to a new level of production of goods and services. These changes are related with higher education and organizational change in the Chinese enterprises what found reflection in this article

Parallelizing multiple precision Taylor series method for integrating the Lorenz system

A hybrid MPI+OpenMP strategy for parallelizing multiple precision Taylor series method is proposed, realized and tested. To parallelize the algorithm we combine MPI and OpenMP parallel technologies together with GMP library (GNU miltiple precision libary) and the tiny MPIGMP library. The details of the parallelization are explained on the paradigmatic model of the Lorenz system. We succeed to obtain a correct reference solution in the rather long time interval - [0,7000]. The solution is verified by comparing the results for 2700-th order Taylor series method and precision of ~ 3374 decimal digits, and those with 2800-th order and precision of ~ 3510 decimal digits. With 192 CPU cores in Nestum cluster, Sofia, Bulgaria, the 2800-th order computation was ~ 145 hours with speedup ~ 105.Comment: arXiv admin note: text overlap with arXiv:1908.0930

The SPM study of oligonucleotides consisting of repeated nucleotide sequences

The work was performed with financial support of the grant of the Republic of Bashkortostan for the young scientists for 2019, contract № 29GR

The study of electrical conductivity of Poly(dA) DNA molecules

Интерес к процессам переноса заряда в молекулах ДНК стабильно высок, что связано с перспективами использования данных молекул в наноэлектронике. В докладе будут представлены результаты СТМ/СТС-исследований одноцепочечной ДНК Poly(dA) - последовательности нуклеотидов одного типа, состоящих из аденина.The interest in the processes of charge transport in DNA molecules is very high, due to prospects of using these molecules in nanoelectronics. In the report we will present the results of STM/STS studies of Poly(dA) single stranded DNA. This is the sequence of one type nucleotides, consisting of adenine.Работа выполнена при поддержке гранта РФФИ № 14-02-97022 р_поволжье_а

MODELING THE MOVEMENT OF A HEAP IN A DIELECTRIC SORTING DEVICE FOR ALFALFA SEEDS

This article presents a theoretical study of modeling the movement of a mixture in a dielectric sorting plant for alfalfa seeds. Theoretical studies were carried out using the general laws of mechanics and mathematical modeling of alfalfa seeds, taking into account their physical and mechanical properties. The results of a theoretical study on modeling the detachment conditions of alfalfa seed heap particles and particle dynamics along the casing and pitched boards of a dielectric sorting device are presented. The differential equation with the initial conditions was solved by numerical methods of Runge-Kutta-Felberg with automatic step selection. The components of a heap of alfalfa seeds, depending on weight and size, at each moment of time, have different trajectories, therefore, the dosed heap must be localized and guided using an additional device - a casing equipped with a ramp board. Theoretically substantiated parameters make it possible to determine the connection points of the ramp board with the casing of the metering drum of the dielectric sorting device

Gas Turbine Units Hydraulic Power Stations

This article provides ideas and feedback on gas turbine and steam-gas installations, hydraulic power plants