RECLAMATION POTENTIAL OF ROBINIA PSEUDOACACIA L. ON MINING ROCK WITHIN STEPPE ZONE OF UKRAINE

Western Donbass is a powerful coal-mining region in the Steppe zone of Ukraine. In this region, large areas are damaged by coal mining. The mine rocks spread all over the coal district of Dnipropetrovsk region often contain toxic inorganic contaminants. In this regard using mine rocks for biological reclamation is nowadays an important environmental issue. Tree species can accumulate heavy metals from technosoils during the whole year and transfer these elements together with other nutrients to aboveground phytomass through the vegetation period

FEATURES OF THE PROCESSES OF FORMING AND SINTERING OF POWDERED THERMOMAGNETIC MATERIALS ON THE IRON- NICKEL BASE WITH CHROMIUM ADDITIVES

Investigate the influence of chromium addition on the demagnetization temperature and Curie point of powder metallurgy thermomagnetic materials by determining the breakout force of its sample from a permanent magnet

Ukrainian National Identity in Donetsk Region: Problems and Development Trends from the End of the XIX - to the Beginning of the XXI Century

In the context of the modern military-political conflict in Donbass, the national identity of the Ukrainians of the Donetsk region attracts considerable attention. After all, it is thanks to the self-determination and self-identification of the individual that an adequate national and political identity is formed. But as a result of the post-totalitarian syndrome, Ukrainian society was unable to achieve this. The national identity of the Ukrainians of the Donetsk region during the period from the end of the 19th century to the beginning of the 21st century underwent a rather complex transformation (first of all, a significant Russification). As a result, there was a deformation of cultural and national identity and a leveling of consciousness. Subsequently, this led to a crisis in the socio-political position of the individual and the population of this region. During the existence of the totalitarian regime in the Ukrainian SSR, a process of total Russification was observed. At the same time, the main blow was directed at the national identity of the inhabitants of the industrial regions of Ukraine, in particular - Donbass. During the 1920s - 1930s, the Ukrainian nation in general and the Ukrainians of the Donetsk region in particular experienced the formation of a Bolshevik totalitarian regime. At the same time, the latter set himself the goal of destroying the national consciousness and identity of Ukrainians. During the 1940s - the first half of the 1980s, a process of total Russification was observed in the Ukrainian SSR. As a result, the national identity of the Ukrainians of the Donetsk region was significantly damaged. The period of the second half of the 1980s - early 1990s marked a gradual departure from the denationalized self-consciousness of the Ukrainians of the Donetsk region. However, it was not easy to get rid of the Soviet stereotypes imposed on citizens for decades. It was at this time that the process of national revival began in the Donetsk region. As a result of the formation of the Donetsk Regional Society of the Ukrainian Language named after Taras Shevchenko, a new perspective for the active development of the national identity of the Ukrainians of the Donetsk region appeared. The population of the region was able to make a choice in the direction of independent national and cultural development. However, at the beginning of the ХХІst century, the doctrine of the "Russian World" began to spread actively on the territory of the Donetsk region. This resulted in the Russian occupation and the emergence of the quasi-formation of the “DPR” in April 2014

Existence of the solution to a nonlocal-in-time evolutional problem

This work is devoted to the study of a nonlocal-in-time evolutional problem for the first order differential equation in Banach space. Our primary approach, although stems from the convenient technique based on the reduction of a nonlocal problem to its classical initial value analogue, uses more advanced analysis. That is a validation of the correctness in definition of the general solution representation via the Dunford-Cauchy formula. Such approach allows us to reduce the given existence problem to the problem of locating zeros of a certain entire function. It results in the necessary and sufficient conditions for the existence of a generalized (mild) solution to the given nonlocal problem. Aside of that we also present new sufficient conditions which in the majority of cases generalize existing results.Comment: This article is an extended translation of the part of Dmytro Sytnyk's PhD Thesi

Changes of nucleic acids of wheat seedlings under spaceflight conditions

The effects of space flight on the growth of wheat seedlings and their nucleic acid content were studied. It was shown that both space and ground seedlings have almost the same appearance, dry weight and nucleic acid content in the root, coleoptile and leaves. The only difference found is in the RNA and DNA content, which is twice as much in the ground seedling apices as in the space-grown seedlings

Ambiente de simulação para o sistema de exploração robótica subaquática UNEXMIN

Underwater mines exploration is a valued, complex, expensive and time-consuming task. The unstable nature of the underwater environment with lack of visibility and the existence of obstructions create the need for complex navigation software which requires numerous missions and hardware/software validations. When testing and verifying control algorithms for such an operation, a simulation environment can be a very helpful tool. This also includes tools for the development of unmanned vehicle software, algorithm benchmarking and system preliminary validation. The objective in this thesis was to start the development of a simulation platform that can be used when developing and testing control systems for AUV operations. The simulator will include a dynamic model of an AUV in addition to complex world and sensor models such as DVL, IMU, Multibeam, Mechanical Scanning Imaging Sonar (MSIS), cameras, SLS and others. The simulated world includes water graphics, mine meshes, underwater visibility, currents, and hydrodynamics. Control of the robot in simulation is performed by keyboard or joystick over thrusters. The platform must be universal, such that users can implement their own algorithms easily and get immediate simulation results without needing to implement a complete control system. There should also be an easy transition between testing the control system on the simulated AUV and applying it to the real AUV. Robot Operating System (ROS) and Gazebo were used in the development of the platform. The platform with sensors and navigation was validated with real-world tests comparison.A exploração de minas subaquáticas ´e uma tarefa valiosa, complexa, dispendiosa e demorada. A natureza instável do ambiente subaquático, com falta de visibilidade e a existência de obstruções, cria a necessidade de software de navegação complexo, qual requer inúmeras missões e validações de hardware/software. Ao testar e verificar os algoritmos de controle para tal operação, um ambiente de simulação pode ser uma ferramenta muito útil. Isto também inclui ferramentas para o desenvolvimento de software de veículos não tripulados, benchmarking de algoritmos e validação preliminar do sistema. O objetivo desta tese foi iniciar o desenvolvimento de uma plataforma de simulação que possa ser usada no desenvolvimento e teste de sistemas de controle para operações de AUV. O simulador incluirá um modelo dinâmico de um AUV, além de modelos complexos do mundo e sensores, como DVL, IMU, Multibeam, MSIS, câmaras, SLS e outros. O mundo simulado inclui gráficos de ´agua, malhas de minas, visibilidade subaquática, correntes e hidrodinâmica. O controle do robô ´e realizado por teclado ou joystick sob as dinâmicas de propulsão. O simulador deve ser universal, de modo que os usuários possam implementar seus próprios algoritmos facilmente e obter resultados imediatos de simulação sem a necessidade de implementar um sistema de controle completo. Também deve haver uma transição fácil entre testar o sistema de controle no AUV simulado e aplicá-lo ao AUV real. ROS e Gazebo foram usados no desenvolvimento da plataforma. A plataforma com sensores e navegação foi validada com comparação de testes reais