Rusal (Russia)

ABSTRACT The mechanical properties and microstructure of a novel Al-Cu-Si-Ce-based alloy produced by selective laser melting (SLM) were studied. The influence of the printing modes on the porosity was investigated. The minimum porosity (0.2 ± 0.05%) was obtained at an overhatch of 130 µm, velocity of 300 mm/s and power of 200 W. The microstructure of the alloy after SLM contains fine particles of solidification origin (Si), Al2Cu and Al8Cu4Ce phases. The solution treatment, quenching and aging heat treatment provide a high ultimate tensile strength of 490 MPa, elongation up to 4% and yield strength at 250°C of 185 MPa. Good combinations of properties make the investigated alloy a prospective material for aircraft applications.

The purpose of this article is to study the legal nature of the suspension of corporate rights as a legal means of regulating corporate relations as a response to the actions of unfriendly foreign states, including by comparing it with the restriction of corporate rights. The author analyzes the structure of corporate relations involving persons whose rights may be suspended, and notes the need for comprehensive legal regulation within the framework of modern reality. As a result of the application of the comparative analysis method, the author comes to the conclusion that the suspension of corporate rights in the context of retaliatory anti-sanctions measures is their temporary termination.

Dengue fever is classified as one of the most common viral diseases with a transmission mechanism implemented through arthropod vectors. The expansion of of the Aedes aegypti mosquito is leading to a significant increase in the number of cases of dengue fever in more than 100 countries, highlighting the importance of developing and implementing specific prevention and treatment measures. Etiotropic drugs with proven efficacy against the pathogen are not registered, and the use of the vaccine is approved only among seropositive individuals. In this regard, pathogenetic treatment remains the main therapeutic strategy, however, work on the synthesis of antiviral drugs is being actively carried out. Due to the unique functions of non-structural proteins NS3 and NS5 in the viral replication cycle, they have become the main targets for studying the antiviral activity of a number of chemotherapy drugs. Of these proteins, due to the most conserved structure, the NS5 protein is a promising target for inhibition, however, success in obtaining a clinical effect using a number of available antiviral drugs has not been reached. This study describes the positive experience of using the nucleoside analogue riamilovir in the treatment of a patient with dengue fever in the Republic of Guinea.

We have studied how the initial state of polycrystals of the metastable compounds Bi2GeO5 and Bi2SiO5 with an Aurivillius-type structure and a glass phase with the equimolar composition Bi2O3 : SiO2 influences the performance of in situ forming catalysts for oxidative dimerization of methane (ODM). The results confirm the effect of the gas phase consisting of the starting components of the catalyzed reaction on improvement of the performance of the catalyst obtained upon thermal decomposition of its initial metastable state: in situ catalyst “self-adjustment” effect. The best catalytic properties for ODM reaction are offered by bismuth silicate (Bi2SiO5) decomposition products, and the highest activity is exhibited by the catalyst forming upon crystallization of the glass phase. Bismuth-containing oxide catalysts have been shown to have the best properties if high-purity starting reagents are used to synthesize them.

Пшеница мягкая озимая Triticum aestivum L. является важнейшей зерновой культурой. Цель исследования – выявление видового состава сорных растений посевов пшеницы озимой в Белгородской области и разработка многолетнего фитосанитарного прогноза присутствия этих видов в агрофитоценозах посевов данной культуры. Описания выполнены по методике геоботанического обследования полей. Материалы систематизированы с помощью базы данных. Осуществлен флористический анализ с выявлением видового богатства и таксономического разнообразия. Выявлены 36 видов сорных растений из 32 родов и 16 семейств. Рассчитаны и проанализированы встречаемость и среднее проективное покрытие видов. Установлено преобладание малолетних видов (82,09 %). Выделены 4 вида, относящихся к высоким классам постоянства встречаемости (IV–V), 6 видов – к среднему классу (III) и 26 видов к низким классам (I–II). Дан многолетний прогноз присутствия данных видов на полях пшеницы озимой для Белгородской области, Центрально-Черноземного региона и ряда прилегающих областей.

применяемый пылевозврат с горячего конца печи позволяет увеличить ее производительность в среднем на 8–10%. В результате исследования компонентного состава пыли, уносимой газами промышленных печей спекания, установлен факт отличия пыли 4 и 5 полей электрофильтров от исходной шихты и пыли с пылевой камеры повышенным содержанием щелочей, хлоридов и сульфатов, влияющих отрицательно на качество спека. Для повышения эффективности пыль электрофильтров предложено выводить из оборота печи и не смешивать ее с пылью пылевой камеры, а утилизировать отдельно по индивидуальной схеме, разделяя ее на фракции по полям электрофильтра.

Currently, corrosion losses in industrialized countries reach 3-5% of national income. This is especially true of metallurgical and chemical enterprises, oil and gas pipelines, watercraft and others, where elements and structures operate in highly aggressive environments of 4-5 degrees. The total damage from corrosion is billions of dollars due to emergencies, environmental disasters and so on. According to statistics, the lack of corrosion protection is the cause of almost 25 percent of accidents As a result of corrosion, metals are converted into various compounds – oxides, hydroxides or salts, in the form of which they are in nature. It is difficult to take into account indirect losses from downtime and reduced productivity of equipment that has undergone corrosion, from disruption of the normal course of technological processes, from accidents caused by reduced strength of metal structures. Up to 10 percent of the produced metal is lost due to corrosion. There are also indirect losses that are difficult to predict or predict. These are losses from downtime and reduced productivity of equipment that has undergone corrosion, from the disruption of normal technological processes, from accidents caused by reduced strength of metal structures, environmental pollution, insurance benefits and, most importantly, from fatalities. Corrosion research suggests that corrosion protection is first and foremost the correct surface preparation and then the sealant or paint. As a result of experiments and tests, the substance CONTRRUST was obtained and patented – a universal eco-material based on plants-modifier-converter, which converts rust into helatic metal polymers. The composition, properties and uses of the material, named and patented as CONTRRUST, have been thoroughly researched and implemented.

No presente trabalho, o livro “Kafka e a Boneca Viajante”, de Jordi Sierra i Fabra (2006/2009), é usado como material de estudo e exercício teórico-clínico. O livro aborda o encontro de Kafka e Elsi, uma jovem menina que se desespera ao perder a sua boneca. Este encontro e o processo de elaboração emocional que se desenvolve a partir da perda da boneca são compreendidos à luz de importantes conceitos teóricos que sustentam a clínica psicanalítica da infância e adolescência, dentre eles, o de espaço potencial, ilusão/ desilusão e fenômenos e objetos transicionais cunhados pelo psicanalista Donald Winnicott. Também são trabalhados os conceitos de revêrie e continência, de Bion, e o conceito de narratividade, visitado nas obras de Celso Gutfreind e Bernard Golse.