On solvability of nonlinear boundary value problems with integral condition for the system of hyperbolic equations

For system of hyperbolic equations of second order a nonlinear boundary value problem with integral condition is considered. By introducing new unknown functions the investigated problem is reduced to an equivalent problem involving one-parametered family of boundary value problems with integral condition and integral relations. Conditions for the existence of classical solutions to nonlinear boundary value problem with an integral condition for a system of hyperbolic equations are obtained. Algorithms for finding solutions are constructed, and their convergence are established

Подготовка специалистов по направлению «Рыболовство и аквакультура» в Кыргызском национальном аграрном университете им. К. И. Скрябина

The purpose of the article is to highlight the process of creating opportunities for training fish farmers in the Kyrgyz Republic. Now fish farming is developing successfully in the country, the issue of training specialists in this economic sector is relevant, the Ministry of Foreign Affairs of Finland provides financial support, and the specialists from the University of Eastern Finland participate in resolving this issue. The article outlines the problems of opening a new direction of training “Fisheries and Aquaculture” at the K. I. Skryabin Kyrgyz National Agrarian University (KNAU). For this, curricula have been developed to train specialists on two directions: specialists with a bachelor’s degree in fisheries and aquaculture management, and fish breeder technicians, whose training will be carried out by the college. The curriculum includes cycles of subjects for the study of humanitarian and socio-economic disciplines, mathematical and natural science disciplines of the professional cycle; it defines goals, course content, a form of study and assessment for each subject; the complexity (number of credits) of the subject is determined. The article shows the process of formation of the direction and training of specialists in the field of fish farming. The authors of the article are members of a team of teachers who have been trained as future teachers of fish farming subjects. The article highlights the process of interaction of specialists of the University of Eastern Finland with the administration and teachers of KNAU in the FishEdu project. The result of this interaction was the opening of the direction “Fishing and Aquaculture” at KNAU and the specialty “Fish Breeder Technician” (in college).Цель настоящей статьи – освещение процесса создания возможности подготовки специалистов-рыбоводов в Кыргызской Республике. Сейчас рыбоводство развивается успешно, вопрос подготовки специалистов этой хозяйственной отрасли актуален и решается при финансовой поддержке со стороны Министерства иностранных дел Финляндии при участии специалистов Университета Восточной Финляндии (УВФ). В статье изложены проблемы открытия нового направления в Кыргызском национальном аграрном университете (КНАУ) им. К. И. Скрябина «Рыболовство и аквакультура», для которого разработаны учебные планы для подготовки специалистов в двух направлениях: специалистов со степенью бакалавра по управлению рыболовством и аквакультурой и рыбоводов-техников, их подготовку планируется осуществлять в колледже. В учебных планах выделены циклы предметов по изучению гуманитарных и социально-экономических дисциплин, математических и естественно-научных дисциплин профессионального цикла. Для каждого предмета определены цели, содержание курса, форма обучения и оценка; трудоемкость (количество кредитов) предмета. Показан процесс становления направления и подготовки специалистов в области рыбоводства. Авторы статьи являются участниками коллектива преподавателей, которых готовили как будущих преподавателей предметов в области рыбоводства. В статье показан процесс взаимодействия в проекте FishEdu специалистов Университета Восточной Финляндии с администрацией и преподавателями КНАУ. Результатом этого взаимодействия стало открытие в КНАУ направления «Рыболовство и аквакультура» и специальности «Техник-рыбовод» (в колледже)

Thermal decomposition of ammonium hexachloroosmate

Structural changes of (NH4)2[OsCl6] occurring during thermal decomposition in a reduction atmosphere have been studied in situ using combined energy-dispersive X-ray absorption spectroscopy (ED-XAFS) and powder X-ray diffraction (PXRD). According to PXRD, (NH4)2[OsCl6] transforms directly to metallic Os without the formation of any crystalline intermediates but through a plateau where no reactions occur. XANES and EXAFS data by means of Multivariate Curve Resolution (MCR) analysis show that thermal decomposition occurs with the formation of an amorphous intermediate {OsCl4}x with a possible polymeric structure. Being revealed for the first time the intermediate was subjected to determine the local atomic structure around osmium. The thermal decomposition of hexachloroosmate is much more complex and occurs within a minimum two-step process, which has never been observed before

Thermal Decomposition of Co-Doped Calcium Tartrate and Use of the Products for Catalytic Chemical Vapor Deposition Synthesis of Carbon Nanotubes.

Thermal decomposition of Co-doped calcium tartrate in an inert atmosphere or air was studied using thermogravimetric analysis and X-ray absorption fine structure (XAFS) spectroscopy. It was shown that the powder substance containing 4 at.% of cobalt completely decomposes within 650-730 °C, depending on the environment, and the formation of Co clusters does not proceed before 470 °C. The products of decomposition were characterized by transmission electron microscopy, XAFS, and X-ray photoelectron spectroscopy. Surfaceoxidized Co metal nanoparticles as large as ∼5.6 ( 1.2 nm were found to form in an inert atmosphere, while the annealing in air led to a wide distribution of diameters of the nanoparticles, with the largest nanoparticles (30-50 nm) mainly present as a Co3O4 phase. It was found that the former nanoparticles catalyze the growth of CNTs from alcohol while a reducing atmosphere is required for activation of the latter nanoparticles. We propose the scheme of formation of CaO-supported catalyst from Co-doped tartrate, depending on the thermal decomposition conditions