In situ X-ray diffraction investigation of nitride coatings at high-temperature oxidation

Structural and phase researches of the multicomponent nanocrystalline coatings synthesized by plasma-assisted vacuum arc method at high-temperature influence by method of X-ray diffraction with the use of synchrotron radiation in situ have been carried out. The main features of these coatings are the superhardness (39 - 45 GPa) and nanocrystalline structure (5 - 20 nm). The analysis of results of structural and phase researches, physical and mechanical characteristics after oxidation of multicomponent nitride coatings at high-temperature heating in open air is presented

Конспект рода Anopteris (Pteridophyta, Pteridaceae)

In the article a synopsis of the genus Anopteris (Prantl) Diels is given. The synopsis of Anopteris includes three species. For each species, the Latin name, basionym, nomenclatural citation, synonyms, information on locus classicus, type, habitat, and distribution are given. An original key for identification of the species of Anopteris is also prepared. The localities of occurrence of each species are precisely given. Приведен конспект рода Anopteris (Prantl) Diels. Конспект включает три вида. Для каждого из них приводится латинское название, базионим, номенклатурная цитата, синонимы, откуда описан, информация о типе, данные о местообитании, распространение по странам с цитированием мест сбора и общее распространение. Для определения всех видов рода Anopteris составлен оригинальный ключ, указаны подробные места произрастания. Приведен конспект рода Anopteris (Prantl) Diels. Конспект включает три вида. Для каждого из них приводится латинское название, базионим, номенклатурная цитата, синонимы, откуда описан, информация о типе, данные о местообитании, распространение по странам с цитированием мест сбора и общее распространение. Для определения всех видов рода Anopteris составлен оригинальный ключ, указаны подробные места произрастания.

PLACE OF LOW-MOLECULAR-WEIGHT HEPARINS IN INTENSIVE THERAPY OF HEPATIC INSUFFICIENCY

The practical significance of heparin low-molecular fractions as inhibitors of inflammation and antithrombin III consumption reduction were studied. That is most critical in acute hepatic failure. The study was performed using the low-molecular-weight heparin (Nadroparin calcium) in low (prophylactic) doses of 2000 anti-factor Xa units daily per 1 meter squared in the form of continuous intravenous infusion. The cohort study proved the nadroparin positive effect on carbohydrate and protein metabolism in children with acute poisoning by hepatotoxic poisons, The significant decrease in the quantitative assessment of disseminated intravascular coagulation relative to the comparison group has been revealed, and the decrease in 28-day mortality from 42 to 13 % has been found in children receiving nadroparin. Conclusions are drawn on the feasibility of introducing low molecular weight heparins into the intensive care regimen of liver failure

On the taxonomical status of Aquilegia kansuensis (Ranunculaceae)

Для рода Aquilegia L. (Ranunculaceae) предложена новая номенклатурная комбинация – A. kansuensis (Brühl) Erst.DOI: 10.14258/turczaninowia.17.4.4 A new combination in the genus Aquilegia L. (Ranunculaceae) – A. kansuensis (Brühl) Erst have been proposed.DOI: 10.14258/turczaninowia.17.4.

Comparison of induction heating parameters of various billets

In this paper, we consider the induction heating of various forms of blanks using a laboratory Autoclave. The thermal and energy characteristics are compared.В данной работе рассматривается индукционный нагрев различных форм заготовок с помощью лабораторной установки Автоклав. Проводится сравнение тепловых и энергетических характеристик

Mechanical safety of reinforced concrete structures at all stages of the life cycle

Ensuring the mechanical safety of operated buildings at all stages of the life cycle is an urgent task. This is especially important when planning major repairs and reconstruction in buildings, as well as determining the period of safe operation from the moment of the survey, i.e. clarification of the remaining service life. The total service life at the design stage is set by the customer and the general designer in accordance with the recommendations of GOST 27751-2014 «Reliability for constructions and foundations. General principles». Mechanical safety and durability are ensured when calculating structures using the limit state method, assigning protection measures depending on the operating conditions, as well as complying with the requirements of SP 255.1325800.2016 «Buildings and structures. Operating rules. General Provisions». A method for preliminary assessment of the mechanical safety of buildings and their structures is proposed for consideration, which eliminates some of the shortcomings of existing methods for calculating the residual life by physical wear (damage) of building structures based on the results of a visual inspection, the basis of which is the dependence of the allowable safe operation period on the percentage of reduced bearing capacity. It is proposed to use the results of a visual inspection performed in accordance with GOST 31937-2011 «Buildings and constructions. Rules of inspection and monitoring of the technical condition»

Значимость маркеров транзиторной ишемии миокарда и гемодинамической перегрузки у новорожденных в критическом состоянии

Monitoring of cardiospecific markers is significant during intensive care.The objective: to compare the diagnostic and prognostic significance of cardiac markers in newborns with somatic and surgical pathology.Subjects and Methods. The study included 76 newborns aged 1 to 14 days with somatic or surgical disorders. The changes in the concentration of cardiomarkers in newborns and their relationship with echocardiography data and non-invasive hemodynamic parameters are presented, their prognostic ability is assessed.Results. Rigidity of non-invasive hemodynamic parameters, and echocardiography data was revealed. In the somatic group, regression of NT-proBNP from 8,307 ng/ml (3,600; 9,000) to 1,717 ng/ml (1,041; 5,011) was regarded as a marker of resolution of hypervolemia against the background of cardiovascular maladaptation. The increase in NT-proBNP from 4,710 ng/ml (3,400; 6,989) to 7,987 ng/ml (3,397; 9,000) in the postoperative period requires a revision of the infusion therapy program with the priority of volume restriction.Conclusions. Stabilization of the condition of patients in the groups is accompanied by a decrease in the concentration of markers of myocardial tension (MB-fraction of creatine phosphokinase, troponin T).Measurement of NT-proBNP concentration allows assessment of fluid overload in critically ill neonates.Мониторинг кардиоспецифических маркеров значим при проведении интенсивной терапии.Цель: сравнить диагностическую и прогностическую значимость кардиомаркеров у новорожденных с соматической и хирургической патологией.Материалы и методы. В исследование включены 76 новорожденных соматического или хирургического профиля в возрасте от 1 до 14 суток. Представлены динамика концентрации кардиомаркеров у новорожденных и их взаимосвязь с данными эхокардиографии, неинвазивными показателями гемодинамики, оценена их прогностическая способность.Результаты. Выявлена ригидность неинвазивных показателей гемодинамики, данных эхокардиографии. В соматической группе регресс NT-проМНУП от 8 307 нг/мл (3 600; 9 000) до 1 717 нг/мл (1 041; 5 011) расценен как маркер разрешения гиперволемии на фоне сердечно-сосудистой дезадаптации. Рост концентрации NT-проМНУП от 4 710 нг/мл (3 400; 6 989) до 7 987 нг/мл (3 397; 9 000) в послеоперационном периоде требует пересмотра программы инфузионной терапии с приоритетом рестрикции объема.Выводы. Стабилизация состояния пациентов в группах сопровождается снижением концентрации маркеров миокардиальной напряженности (МВ-фракция креатинфосфокиназы, тропонин Т). Измерение концентрации NT-проМНУП позволяет оценивать перегрузку жидкостью у новорожденных в критическом состоянии

Mathematical modeling of a tractional linear asynchronous motor

The results of modeling a linear induction motor using the method of detailed equivalent circuit