The balance of elements in the system “Luvic Chernozems – agricultural plants” on the Plavsk upland (Tula region of Russia)

To assess the transfer of macro (K, P, S, Mg, Ca, as well as Si, Na, Fe, Al, Mn and Ti) and microelements (Zn, Ba, Cu, Sr, Mo, as well as As, Zr, Pb, Co, Ni, V and Cr) from Luvic Chernozems (Aric, Loamic, Pachic) into agricultural plants, we studied the inventories of chemical elements in three agrocenoses (wheat, soybean, Galega orientalis Lam. and Bromopsis inermis Leyss grass mixtures) from the Plavsk upland (Tula Region). This territory is subjected to intensive industrial and agricultural impacts: it is 40 km away from the town of Shchekino with a nitrogen fertilizer plant and a thermal power plant, 60 km away from Tula with large metallurgical enterprises, 70 km away from the town of Novomoskovsk with several chemical enterprises and state district power plant. In soils, the total content of elements was determined by the X-ray fluorescence spectrometry. The elemental composition of plants after autoclave decomposition with a mixture of concentrated nitric acid and hydrogen peroxide and the content of the bioavailable fraction (extracted by an ammonium acetate buffer with pH 4.8) of elements in soil were estimated by the atomic emission spectrometry with inductively coupled plasma. In topsoil (a 10-cm layer), maximal inventories are typical for total Si (40 ± 4 kg/m2), Al (7.0 ± 0.8 kg/m2) and Fe (3.4 ± 0.3 kg/m2) and for bioavailable Ca (570 ± 48 g/m2), Mg (43 ± 4 g/m2), K (22 ± 6 g/m2). In plants, the main inventories (g/m2) of K, P, S, Mg, Si, Mn, Zn, Ba, Cu, Mo occur in the above ground phytomass. The most effectively plants assimilate bioavailable fractions of K, P, Ti, Mo, As, Zr, V. Based on the resource method for soil quality assessment, the studied Chernozems are characterized by a low level of Ni contamination, a moderate supply of bioavailable K with a lack of bioavailable P

Indifference

The matter of indifference is always relevant. Almost everyone has ever experienced it in relation to the difficulties of other people, even to the loved ones. Perhaps, a man is organized in such a way that firstly he is oriented on solving his own problems and only then on difficulties of close people. But you will not spend a lot of time and money on being responsive as it is more important to be kind, compassionate, ready to share the warmth of your soul with people in need.Тема равнодушия актуальна во все времена. Вероятно, каждый из нас хоть раз проявлял равнодушие по отношению к трудностям близких. Возможно, человек так устроен, что он склонен сначала решить собственные проблемы, а неприятности близких откладывает на второй план. Скорее всего, так мы просто пытаемся найти оправдание нашей слабости, нежеланию оказать внимание и поддержку близким людям. Отзывчивость тесно связана со способностью проявлять милосердие, сострадать. Иметь доброе сердце – не значит тратить много денег. Гораздо важнее отдавать теплоту своей души, уважать, ценить – всё это умения отзывчивого человека

Influence of Electric Explosive Doping with Yttrium and Electron Beam Treatment on the Structure and Phase Composition of Titanium

The purpose of this article was to identify the features of the formation of the structure and phase composition of technically pure titanium in EVL with yttrium and subsequent EPO. Methods of modern materials science conducted studies of the structure, phase composition, mechanical properties of titanium VT1–0 after combined treatment.Целью настоящей статьи являлось выявление особенностей формирования структуры и фазового состава технически чистого титана при ЭВЛ иттрием и последующей ЭПО. Методами современного материаловедения проводились исследования структуры, фазового состава, механических свойств титана ВТ1–0 после комбинированной обработки

Software of the Educational Process in the Preparation of Students of Secondary Vocational Education

В данной статье рассматривается вопрос необходимости составления электронных справочников по ознакомлению обучающихся с программами, которые не рассматриваются в учебном процессе, но могут существенно изменить сам процесс обучения и дополнить его.This article discusses the issue of the need to compile electronic reference books to familiarize students with programs that are not considered in the educational process, but can signifi cantly change the learning process itself and supplement it

AFM investigation of titanium VT1-0 structure destroyed during multicyclic fatigue after electron-beam treatment

В данной работе было проведено исследование методами атомно-силовой и оптической микроскопии образца титана ВТ1-0, подвергнутого разрушению при многоцикловой усталости и предварительно обработанного электронным пучком. Проведен анализ использования данных методов при изучении структуры материала.In this paper, a study was conducted by atomic force and optical microscopy of titanium VT1-0 sample subjected to degradation at high cycle fatigue and pre-treated by the electron beam. The analysis of the use of these methods in the study of the structure of the material was performed.Работа выполнена при финансовой поддержке государственного задания (номер заявки 3.1283.2017/ПЧ) и гранта РФФИ (проект № 16-43-700659-р_сибирь_а)