Narrow-jet plasma technology – the way to new standards on welding production

Показана возможность изменения отраслевых стандартов на производство сварных соединений, так как качество сварных швов, полученных после плазменной резки по технологии узкоструйной плазмы без удаления зон термического влияния не уступает показателям, достигаемым после механической разделки.The possibility of changing the industry standards for the production of welded joints is shown, since the quality of welds obtained after plasma cutting using the technology of narrow-jet plasma without removing the zones of thermal influence is not inferior to the indicators achieved after mechanical cutting

Entrepreneurship Education as a Subject of Research

On April 5, 2023 a round-table discussion on “Entrepreneurship Education as a Subject of Research” was organized by the Editorial Board of the “Higher Education in Russia” Journal with the Moscow University for Industry and Finance “Synergy” in the framework of the International Scientific Congress “The Role of Business in Society Transformation – 2023”. Entrepreneurship education formation is a focus of interest as for scientists, and for practitioners as well all around the world. During a round-table there were discussed the actual research issues required attention of academic society. Research trends were defined and connected: 1) with values, identity and moral dimension; 2) with mentors’ experience; 3) with students’ experience

The first space-related study of a kombucha multimicrobial cellulose-forming community : preparatory laboratory experiments

Biofilm-forming microbial communities are known as the most robust assemblages that can survive in harsh environments. Biofilm-associated microorganisms display greatly increased resistance to physical and chemical adverse conditions, and they are expected to be the first form of life on Earth or anywhere else. Biological molecules synthesized by biofilm -protected microbiomes may serve as markers of the nucleoprotein life. We offer a new experimental model, a kombucha multimicrobial culture (KMC), to assess a structural integrity of a widespread microbial polymer - cellulose - as a biosignature of bacteria-producers for the multipurpose international project "BIOlogical and Mars Experiment (BIOMEX)", which aims to study the vitality of pro- and eukaryotic organisms and the stability of organic biomolecules in contact with minerals to analyze the detectability of life markers in the context of a planetary background. In this study, we aimed to substantiate the detectability of mineralized cellulose with spectroscopy and to study the KMC macrocolony phenotype stability under adverse conditions (UV, excess of inorganics etc.). Cellulose matrix of the KMC macrocolony has been mineralized in the mineral-water interface under assistance of KMC-members. Effect of bioleached ions on the cellulose matrix has been visible, and the FT-IR spectrum proved changes in cellulose structure. However, the specific cellulose band vibration, confirming the presence of beta(1,4)-linkages between monomers, has not been quenched by secondary minerals formed on the surface of pellicle. The cellulose-based KMC macrocolony phenotype was in a dependence on extracellular matrix components (ionome, viriome, extracellular membrane vesicles), which provided its integrity and rigidness in a certain extent under impact of stressful factors.https://link.springer.com/journal/110842018-06-30hj2017Business Managemen

LANTHANUM AND URANIUM SOLUBILITY IN Ga-In AND Ga-Al EUTECTIC BASED ALLOYS

Solubility of lanthanum and uranium was determined in gallium-aluminum and gallium- indium eutectic alloys between 573-1073 K using sedimentation method

Роль радионуклидной диагностики в комплексном обследовании ВИЧ-инфицированных пациентов с ишемической болезнью сердца

Cardiovascular disease is one of the most frequent cause of death globally. The greatest part is occupied by ischemic heart disease. HIV patients are composed to a higher risk of coronary heart disease.The purpose of this work is to evaluate the possibility of using molecular imaging methods in a comprehensive examination of patients with HIV infection and ischemic heart disease.Materials and methods. The survey group includes 32 patients with HIV infection. The comparison group consists of 25 age-matched patients with coronary heart disease and without HIV Infection. All patients were underwent myocardial perfusion scintigraphy using single photon emission computed tomography. Positron emission tomography with FDG were performed if necessary to assess the viability of the myocardium. The patients of the main group undergo diagnostic coronary angiography and standard set of laboratory and institutional diagnostic methods.Results. The results of which confirm the high efficiency of radionuclide diagnostic methods for detecting perfusion disorders, contractility and myocardial viability in patients with HIV infection even at an early stage. They can be recommended for using in a comprehensive examination of patients with HIV infection.Наиболее частой причиной смертности во всем мире являются сердечно-сосудистые заболевания, среди которых ведущее место занимает ишемическая болезнь сердца (ИБС). В группу с наиболее высоким риском развития ИБС входят пациенты с ВИЧ-инфекцией.Цель исследования: оценка возможности применения методов молекулярной визуализации в комплексном обследовании пациентов с ВИЧ-инфекцией и ИБС.Материал и методы. В группу обследования включено 32 пациента с ВИЧ-инфекцией, группу сравнения составили 25 сопоставимых по возрасту пациентов без ВИЧ-инфекции с ИБС. Всем пациентам проведена перфузионная сцинтиграфия миокарда (с помощью ОФЭКТ), ПЭТ/КТ сердца с ФДГ проводилась при необходимости оценки жизнеспособности миокарда в комплексе с диагностической коронароангиографией и стандартным набором лабораторно-инструментальных методов диагностики.Результаты. Полученные результаты подтверждают высокую эффективностью методов радионуклидной диагностики для выявления нарушений перфузии, сократимости и жизнеспособности миокарда у пациентов с ВИЧ-инфекцией даже на ранней стадии и могут быть рекомендованы к использованию в комплексном обследовании пациентов с ВИЧ-инфекцией

On the Issue of Electronic Waste Disposal

Работа посвящена проблеме переработки отходов электроники и электротехнического оборудования. Указаны объемы использования электронных устройств и утилизации их отходов. Описано негативное влияние компонентов электронных отходов на организм человека. Рассмотрены наиболее востребованные методы утилизации отходов электроники на примере печатных плат. Особое внимание уделено перспективам развития утилизации электронных отходов в России.The work is devoted to the problem of waste recycling of electronics and electrical equipment. The volumes of use of electronic devices and their waste disposal are indicated. The negative impact of electronic waste components on the human body is described. The most popular methods of waste disposal of electronics on the example of printed circuit boards are considered. Special attention is paid to the prospects for the development of electronic waste disposal in Russia

A Methodology for Supersonic Commercial Market Estimation and Environmental Impact Evaluation

International audienceInterest and effort in re-introducing civil supersonic transport (SST) airplanes as a means of travel have surged in the past decade. Current major endeavours are underway for both commercial and business supersonic vehicles. The value proposition for these aircraft exists for high-networth individuals and business-class travellers who value time savings more than the potential cost associated with supersonic travel. Although these new SSTs in development will be more fuel-efficient than the SSTs of the past, they will have higher relative fuel burn (FB) than current subsonic aircraft flying the same routes. Burning more fuel while having less passengers (pax) on board per trip yields significantly higher FB per passenger for these operations. However, the relatively small market capturable by supersonic commercial operations means that in the broader scope of global aviation, the effect of increased FB per pax on fleet-level carbon dioxide (CO2) emissions is unknown. In addition, due to uncertainties in the effectiveness of sonic boom reduction technologies,it remains unclear whether supersonic over-land flight will be permitted in the future. Part I of this twopart study aims to formulate a methodology that employs a bottom-up approach for estimating the demand of supersonic commercial operations in coming decades, using only publicly available subsonic baseline-fleet data. The constraints and limitations identified while using publicly available data is key to understanding the data requirements for executing market assessment studies of this type. Part II of two-part study will fill many of the gaps identified in this public-data-only Part I, in order to refine the study process and results. After proposing the bottom-up methodology for estimating demand, the procedure is implemented and the environmental impact of the estimated market is determined. The results identify a supersonic commercial flight demand of 47 to 786 daily, global flights in 2035, growing to 71 to 1,180 daily, global flights in 2050, corresponding to low and high demand scenarios, respectively. These fleets will contribute an approximate 1.96 to 28.61 megatonnes (MT) of CO2 to global aviation emissions in 2035, growing to 3.01 to 43.08 MT of CO2 in 2050. These emissions in 2035 and 2050 represent a 0.21 to 3.12% and 0.33 to 4.69% increase in CO2 emissions with respect to the 2018global subsonic commercial aviation fleet

The first space-related study of a Kombucha multimicrobial cellulose-forming Community: preparatory laboratory experiments

Biofilm-forming microbial communities are known as the most robust assemblages that can survive in harsh environments. Biofilm-associated microorganisms display greatly increased resistance to physical and chemical adverse conditions, and they are expected to be the first form of life on Earth or anywhere else. Biological molecules synthesized by biofilm -protected microbiomes may serve as markers of the nucleoprotein life. We offer a new experimental model, a kombucha multimicrobial culture (KMC), to assess a structural integrity of a widespread microbial polymer – cellulose – as a biosignature of bacteria-producers for the multipurpose international project “BIOlogical and Mars Experiment (BIOMEX)”, which aims to study the vitality of pro- and eukaryotic organisms and the stability of organic biomolecules in contact with minerals to analyze the detectability of life markers in the context of a planetary background. In this study, we aimed to substantiate the detectability of mineralized cellulose with spectroscopy and to study the KMC macrocolony phenotype stability under adverse conditions (UV, excess of inorganics etc.). Cellulose matrix of the KMC macrocolony has been mineralized in the mineral-water interface under assistance of KMC-members. Effect of bioleached ions on the cellulose matrix has been visible, and the FT-IR spectrum proved changes in cellulose structure. However, the specific cellulose band vibration, confirming the presence of β(1,4)-linkages between monomers, has not been quenched by secondary minerals formed on the surface of pellicle. The cellulose-based KMC macrocolony phenotype was in a dependence on extracellular matrix components (ionome, viriome, extracellular membrane vesicles), which provided its integrity and rigidness in a certain extent under impact of stressful factors