BAT According to Climatic Neutrality of Production of Steel Products

The purpose of this article is to estimate the best available technologies for values of the following technological numbers: fuel, ecological, depreciation, greenhouse and their sums. All these numbers have power dimension: t of conditional fuel/unit of production that allows to put them. The fuel technological number characterizes power consumption of production. The technological ecological number transfers a payment of the enterprise for environmental pollution to power units. The technological depreciation number transfers depreciation charges from rubles to power units. The technological greenhouse number translates a payment of the enterprise for emissions of greenhouse gases in power units. Technological numbers have through character – from extraction of raw materials before receiving finished goods. The best available technologies are characterized by the smallest sum of all technological numbers. Keywords: through power-ecological analysis, power ecological capacity of production of steel products, technological fuel ecological greenhouse number, best available technologies, climatic neutralit

N-acetyltransferase 2 (NAT2) Gene Polymorphisms and the Effectiveness of Infertility Treatment in Patients with Peritoneal Endometriosis

Today, infertility has become a global issue. WHO ranks it the fifth among the major diseases of those below 60 years, after alcoholism, depression, injuries and eyesight disorders. Numerous studies conducted on the problems of infertility in endometriosis still do not offer clear answers regarding the pathogenesis and mechanisms of this disease and its influences on fertility. According to the survey results, point mutations of the NAT2 gene (NAT2*5 and NAT2*6) have been identified in 75.6% of the patients with infertility problems and the peritoneal form of endometriosis, that create “slow” allelic variants, which exceed the average index in the population. The peculiarities of the NAT2 gene polymorphisms have been proven to be associated with the effectiveness of the infertility treatment of female patients with peritoneal endometriosis. In the group of non-pregnant patients, the presence of с.341Т>C, c.481C>T, c.590G>A and c.803A>G heterozygous point mutations are 73.2, 73.2, 5.4, and 62.5%, respectively. The significant difference in the comparison of the allelic polymorphism during the various stages of the endometriosis was not identified. At stage III-IV endometriosis the frequency of three and more point substitutions was significantly higher. NAT2 gene polymorphisms can find use as an additional criterion for predicting the effectiveness of the infertility treatment of patients with peritoneal endometriosis

Thermochemistry of heteroatomic compounds. Part 6. Enthalpy of solvation and complex formation of some halides of three-coordinated phosphorus compounds in pyridine

Using previously published values of the enthalpies of solvation of some derivatives of three-coordinated phosphorus compounds, the contributions of the non-specific solvation enthalpies in the general solvation effect in benzene, p-xylene, methanol and pyridine have been calculated. Taking into account the known possibility of intramolecular complex formation between halogenated derivatives of PIII and pyridine, the magnitudes of specific interaction enthalpies for PCl3, PBr3, (EtO)2PCl, {A figure is presented} PCl and {A figure is presented} PBr were determinated. Thermodynamic parameters of complex formation between cyclic chlorophosphites and 1-dimethylamino-3,3-dimethyl-propan-2-one have been obtained and are discussed. © 1995

Graph model for carbon dioxide emissions from metallurgical plants

Mathematical models are presented for estimating carbon dioxide emissions from metallurgical processes. The article also presents a new mathematical model in graph form to calculate transit and net emissions of carbon dioxide based on the estimates obtained for the individual processes. The graph model is used to compare the blast-furnace-converter process with the blast-furnace-EAF process. © 2013 Springer Science+Business Media New York

Study of pregnant women’s emotional state

The article discusses how the emotional state of pregnant women is influenced by their previous experience of pregnancy. The study relies on the following methods: ‘Test of Pregnant Woman’s Relations’ by I.V Dobryakova; ‘Self. Assessment of Emotional States’ by A. Wessman and D. Ricks; “Self. Estimate” by T. Dembo and S. Ya. Rubinshtein (modified by P. V. Yanshin); “Test of Meaningful Life Orientations” by D. Krambo and L. Makholikh (adapted by D. A. Leontyev). The study has shown that in the presence of complications and pathologies — in the form of a history of miscarriage — the emotional sphere of a woman will be characterized by emotional instability, increased anxiety and low self.esteem. Emotional instability is typical of pregnancy in general and it often is accompanied by dependence on others, distrustfulness, fatigue, vulnerability, impressionability combined with excitement, anxiety, and some fear.This study was funded by the Russian Foundation for Basic Research Grant № 17‑36‑01100

Corrosion Resistance of Al–CNT Metal Matrix Composites

The design of aluminium–graphite metal matrix composites (MMCs) with advanced mechanical properties and high corrosion resistance is in demand for aerospace, transportation, and industrial applications. Breakthroughs in this field are limited due to the tendency of aluminium– graphite MMCs to corrode. In the present research, aluminium‐based MMCs were produced by a relatively novel combined two‐staged method. Multiwall carbon nanotubes (MWCNTs) were added into molten Al1070 and processed by high‐pressure die casting followed by cyclic extrusion. For the composites produced by this method, it was previously demonstrated that mechanical properties are improved in comparison with pure aluminium alloys. In the current study, the manufactured Al–MWCNT composites were investigated by electrochemical tests (such as open circuit potential), potentiodynamic tests, linear polarization tests, and electrochemical impedance spectra to understand the corrosion resistance of the obtained composite material. The experimental testing of the corrosion resistance of Al–MWCNT MMCs showed that due to the advantages of the fabrication method, the addition of CNTs to aluminium does not cause a radical decrease of corrosion resistance. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Acknowledgments: This article is based upon work from COST Action CA15102 “CRM‐EX‐ TREME—Solutions for Critical Raw Materials under Extreme Conditions” and COST Innovators’ Grant IG15102 “ITHACA—Innovative and sustainable TecHnologies for reducing critical raw mA‐ terials dependence for Cleaner transportation Applications” supported by COST (European Coop‐ eration in Science and Technology) www.cost.eu

Calculation of power consumption and issue of CO2 at various processes by the production of steel

Проведены сравнительные расчеты эмиссии диоксида углерода – парникового газа – при различных сочетаниях коксовых (доменная печь + конвертер, доменная печь + электродуговая печь или ЭДП) и бескоксовых (HyL-3 + ЭДП, MIDREX + ЭДП, ROMELT + ЭДП, COREX + ЭДП, ЭДП на ломе) процессов производства стали. Для сравнительной оценки технологических процессов приведено ранжирование по значению сквозной интегральной эмиссии парникового газа CO2. При производстве стали выявлены преимущества по значению эмиссии CO2 для процессов HyL-3 + ЭДП, Midrex + ЭДП.Comparative calculations of carbon dioxide emission - greenhouse gas at various combinations coke oven (a blast furnace – the converter, a blast furnace - the electric arc furnace or EAF) and the coke-free (HyL-3-EAF, MIDREX-EAF, ROMELT-EAF, COREX-EAF, EAF on scrap) processes for the production of steel are carried out. For comparative assessment of technological processes in the framework of the power-ecological analysis it is considered parameter of emission of CO2 greenhouse gas. Steel production advantages CO2 emissions when using processes of HyL-3 + EAF, Midrex + EAF are revealed

About interdisciplinary connections teaching technical disciplines by selecting the tracks of learning

В статье рассматриваются вопросы преподавания студентам младших курсов следующих дисциплин: сопротивление материалов, физика, гидравлика. Обращение к рассматриваемой теме вызвано присоединением России к Болонской декларации по высшему образованию. С этого начались реформы в отечественной системе образовании. Реформирование происходит как в содержательном, так и в организационном направлениях. В результате введено трехуровневое образование: бакалавр, магистр, аспирант. Были разработаны и утверждены Федеральные государственные стандарты образования нового поколения. Нововведения анализируются на примере преподавания дисциплинстудентам Строительного и Механико-машиностроительного институтов Уральского федерального университета имени первого Президента России Б.Н.Ельцина (УрФУ).This article deals with the teaching of the most important disciplines for undergraduates: strength of materials, physics, hydraulics. Appeal to the topic due to Russia's accession to the Bologna Declaration on Higher Education. This started a reform of our education system. Reforming occurs both in substance and in organizational directions. As a result, introduced a three-level education: Bachelor, Master and PhD student. Federal State Educational Standards of a new generation were developed and approved. Innovations are analyzed as an example of teaching disciplines for students of Institute of Civil Engineering and of Institute of Mechanics and Machine Building of the Ural Federal University named after the first President of Russia Boris Yeltsin (UrFU)