The Modified Fibrous Material on the Basis of Polyethyleneterephthalate and Metal / Carbon Nanostructures

Results of theoretical justification and experimental receiving a fibrous material on the basis of the polyethyleneterephthalate, modified metal/carbon nanostructuresare, presented in article. Possibility of receiving the polymeric fibers possessing the increased durability and sorption ability in comparison with not modified fibers is established. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3633

Способ ведения доменной плавки

Изобретение относится к черной металлургии, в частности к производству чугуна в доменной печи. Способ включает загрузку в доменную печь агломератов и окатышей разного состава, кокса, флюсов, контроль состава чугуна и шлака на выпуске, определение основности шлака по отношению B=CaO/SiO2. Дополнительно определяют вязкость шлака при различных температурах и регламентируют вязкость конечного шлака в пределах 0,2-0,5 Па·с. Также определяют градиент вязкости шлака, равный уменьшению его вязкости при увеличении температуры на 1°С, в диапазоне его вязкости от 2,5 Па·с до 0,7 Па·с, в пределах значений, не превышающих 0,030 Па·с/°С. Использование изобретения обеспечивает улучшение показателей работы доменной печи при выплавке передельных чугунов из многокомпонентных шихт переменного состава, повышение производительности, уменьшение расхода кокса

Analysis of alternative actions for import substitution policy implementation in machine engineering complex

This paper discusses the considerations for production modernization, replacement of imported spare parts manufactured in-house and redistribution of items manufactured spare parts between managed societies, with a goal to improve the quality and reliability of products, to reduce its cost, and work. Noted that the process of acquiring new foreign equipment and modern materials are complicated. There are examples of restrictive measures of the sanctions impact on industrial products and the dynamics of dependency on imports of industrial products. We used analytic and statistical research methods. Authors conducted a comparative analysis of the engineering assets of «Metalloinvest» holding that showed that all businesses have an impressive fleet of metal-working equipment on all groups of machines on the basis of an analysis of the needs for them to transport spare parts

The migration of 137Cs and 90Sr in soil-vegetation cover at accidental underground nuclear explosion site «Kraton 3»

Here, we report studies on content and distribution of 137Cs and 90Sr artificial radionuclides in soil-vegetation cover at «Kraton 3» accidental underground nuclear explosion site. This site is located in the territory of northwestern Yakutia, within the northern taiga subzone of the permafrost-taiga region of eastern Siberia boreal belt. In geomorphological aspect, this object belongs to steep slope of the divide connecting the flood-lands of the Markha River and peneplain of the divide. Sod-carbonate (redzina) soils prevail in soil cover of «Kraton 3» underground nuclear explosion site. This type of soil is typically characterized by a thin soil profile, weak alkaline reaction, heavy granulometric composition, saturated soil-absorbing complex, and drastically decreasing profile distribution of humus. Despite the considerable time after the accident, the radiation situation at the site is still very disturbing. Gamma ray background radiation levels at the site varied from 10 to 200 μR/h, which were 2–25 folds higher than average natural background radiation. The isotope contamination densities in soils of sites interconnected along the drainage were 34–1025 kBq/m2 for 137Cs and 57–781 kBq/m2 for 90Sr, which exceeded 30–1000 times the global fallout levels of these radionuclides. The rates of vertical migration of studied radionuclides were also determined as 0.11–0.84 % (137Cs) and 0.79–1.44 % (90Sr) per year of total radiation contamination density. The minimum vertical migration rates of 137Cs (0.11 %) were observed in leached sod-carbonate soil, while maximum rates (0.84 %) were determined in immature sod-carbonate soil, the profile of which lacks organogenic and humus-accumulative horizons. The migratory capabilities of 137Cs and 90Sr in this soil were very close and made 0.84 and 0.79 % respectively. Migration factors of 137Cs and 90Sr in permafrost soils of the studied area were determined with the use of principal component analysis. This study also revealed that radioactive contamination levels of local vegetation remain considerably high. The concentration of radioactive cesium in plants growing on the site of accidental underground nuclear explosion is 40–5000 times higher than its natural background levels

Analysis of alternative actions for import substitution policy implementation in machine engineering complex

This paper discusses the considerations for production modernization, replacement of imported spare parts manufactured in-house and redistribution of items manufactured spare parts between managed societies, with a goal to improve the quality and reliability of products, to reduce its cost, and work. Noted that the process of acquiring new foreign equipment and modern materials are complicated. There are examples of restrictive measures of the sanctions impact on industrial products and the dynamics of dependency on imports of industrial products. We used analytic and statistical research methods. Authors conducted a comparative analysis of the engineering assets of «Metalloinvest» holding that showed that all businesses have an impressive fleet of metal-working equipment on all groups of machines on the basis of an analysis of the needs for them to transport spare parts