Production of Ferroalloys and Recycling in the Continuous Oxygen Reactor

A new technology for the production of ferronickel in a new type of unit – a continuous oxygen reactor (COR). The heat source of the process is heat from the afterburning of the exhaust gases. High recovery rate is achieved by carrying out the recovery process in the ore-coal briquettes. Briquettes are located on a carbon substrate. The products are metal and slag granules. The process is characterized by satisfactory performance and low cost of ferronickel. Keywords: ferroalloy industry, continuous oxygen reactor, briquettes, ferronicke

Assessment of regional investment attractiveness with the use of gis technologies

This article discusses problems of development and application of special geographic information systems (GIS) which promote performing objective assessment of investment attractiveness of territories for potential investors. This GIS class helps carry out analysis and forecast various businesses development on the territory of certain region, city, and areas with optimal business climate. Relevance of the matter is connected with absence of real investment attraction instruments which help to increase economic competitiveness of Russian regions. The purpose of the conducted research is to determine territorial difference in investment potentials of municipal and city districts of the Republic of Tatarstan and mechanisms of their increase. An object of the research is territory of the Republic of Tatarstan with its unique physiographic characteristics and economic and social situation. Traditional geographical methods which were used in research included cartographical (based on methodological framework of thematic and complex mapping and on achievements in geoinformation technologies area), comparative and descriptive, spatial analysis, statistical methods. The technique of integrated assessment of investment attractiveness of rural and urban districts of the Republic of Tatarstan with the use of geoinformation technologies is the main result of undertaken research. Creation of specialized geographic information system "The Investment Portal of the Republic of Tatarstan" which helps to make effective presentation of regional investment potential to investors is also the research effect

Improving an efficiency of agricultural territories on the basis of space-based and geoinformation technologies

© 2016, International Journal of Pharmacy and Technology. All rights reserved.This article is devoted to the development and use of space-based and geoinformation technologies allowing for agricultural enterprises, state and municipal authorities to carry out an objective assessment of agricultural areas, to analyze and give a forecast of development of agro-business in specific areas and territories. The aim of the study is to determine the territorial features of agricultural plots. The object of research is the territory of the agricultural enterprises in the Republic of Tatarstan with a total area of about 10 thousand hectares, including an area of 7500 hectares of arable lands with their unique physical and geographical characteristics. In this work we have used traditional geographical techniques: mapping, based on methodological foundations of thematic and complex mapping, and on the achievements in the field of geo-information technologies, comparative descriptive method, spatial analysis method, and statistical method. As a result of the study, a method was developed on evaluating the efficiency of crop production on the territory of individual agricultural areas of enterprises with space-based and geoinformation technologies what will allow timely management decisions to make; and also it is suggested to introduce a specially developed hardware and software for monitoring and implementation of measures aimed at improving the efficiency of use of agricultural land

Simulating Heat Transfer by Radiation in Ansys Fluent

В работе проведено моделирование теплопередачи за счет излучения в программном продукте Ansys Fluent. Программа использует для расчетов системы дифференциальных уравнений.In this paper, we simulate heat transfer due to radiation in the Ansys Fluent 19.2 software product. The program uses a system of differential equations for calculations

Numerical Study of the Reverse Osmotic Installation in the Ansys Fluent Software Package

В настоящей работе представлены результаты исследования работы установки обратного осмоса. Определено влияние давления температуры, скорости потока и химического состава входной воды на эффективность работы систем обратного осмоса. Рассмотрены и изучены процессы очистки воды с помощью явления обратного осмоса. Моделирование задачи выполнено в программном продукте Ansys Fluent.This paper presents the results of a study of the operation of the reverse osmosis unit. The influence of temperature pressure, flow rate and chemical composition of the inlet water on the efficiency of reverse osmosis systems has been determined. The processes of water purification using the reverse osmosis phenomenon are considered and studied. The simulation of the problem was performed in the Ansys Fluent software product

Membrane microvesicles: Biological properties and involvement in pathogenesis of diseases

membrane vesicles, which are released from surface of cells under normal conditions as well as in response to stimulation or destruction of cells (platelets, erythrocytes, leukocytes, endothelial cells, transformed cells, etc.). For a long time it was believed that MV do not play a significant role and were considered to be inert «waste», released by cells during their life, but accumulating evidence indicates the important role of MV in different physiological and pathological processes. To date, the databases PUBMED, OMIM and GENE accumulated a large number of publications devoted to the study of the ability of microvesicles to carry a variety of biologically active substances (lipids, proteins, nucleic acids, etc), the use of microvesicles as diagnostic markers and the influence of membrane microvesicles on the development of various diseases. © Human stem cells institute, 2013

Cytokine Profile of Patients with Allergic Rhinitis Caused by Pollen, Mite, and Microbial Allergen Sensitization

© 2017 Yury A. Tyurin et al. Allergic rhinitis (AR) is especially prevalent among the population of large cities. Immunologically, the airway epithelium is a region where the population of allergen-presenting cells concentrates. These cells actively express a group of receptors of the innate immune system. A specific cytokine profile is its representation. The study was aimed at evaluating the cytokine profile in patients with seasonal and perennial allergic rhinitis. The cytokine profile of nasal secretion and blood serum of 44 patients with AR was studied. 24 of them had seasonal allergic rhinitis (SAR), and 20 patients suffered from perennial allergic rhinitis (PAR). The patients' age ranged from 4 to 60 years. It was determined in our study that the activation of the GM-CSF production retained in patients with PAR sensitized to mite allergen components (Dermatophagoides pteronyssinus). There was a higher production profile of TNF-α and TSLP in nasal secretion in the patients with perennial allergic rhinitis and additional high sensitization to SEs. Sensitization to mold fungal allergen components significantly increases in patients with seasonal allergic rhinitis. They demonstrated high level of sensitization to the Aspergillus fumigatus component m3. Thus, along with other clinical trials, the study performed would clarify some aspects of molecular pathogenesis of human allergic rhinitis

Study of the Effect of Y2 O3 Doping on the Resistance to Radiation Damage of CeO2 Microparticles under Irradiation with Heavy Xe22+ Ions

This paper presents the results of a study on the influence of Y2 O3 doping on the resistance to radiation damage and an assessment of structural changes associated with the accumulation of radiation defects in CeO2 microparticles under irradiation with heavy Xe22+ ions. The relevance of this study consists of the prospects for the use of CeO2 microparticles as materials and candidates of inert matrices of nuclear fuel. A method of solid-phase synthesis was applied to obtain microparticles with different concentrations of dopant. It included grinding of CeO2 and Y2 O3 microparticles followed by thermal sintering at 1100◦ C in an oxygen-containing medium to produce highly ordered microparticles. During the study of the structural characteristics of the synthesized microparticles, it was found that increasing the dopant concentration from 0.05 mol.% to 0.15 mol.% leads to an increase in the crystallinity degree as well as a decrease in dislocation density. According to the results of the assessment of the resistance of microparticles to radiation damage, it was found that an increase in the dopant concentration leads to a decrease in swelling and structural distortion by more than 2.5–3 times, which indicates an increase in the radiation resistance. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.Funding: This research was funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (No. AP09058081)

Determination of fluoroquinolone antibiotics through the fluorescent response of Eu(III) based nanoparticles fabricated by layer-by-layer technique

The present work introduces the determination of fluoroquinolone antibiotics (FQs) in aqueous solutions through the fluorescent response of Eu(TTA)3 and [Eu(TTA)31] (TTA- and 1 are thenoyltrifluoroacetonate and phosphine oxide derivative) complexes encapsulated into the polyelectrolyte capsules fabricated through layer-by-layer deposition of poly(sodium 4-styrenesulfonate) (PSS) and polyethyleneimine (PEI). The variation of luminescent core, polyelectrolyte deposition and concentration conditions reveals two modes of fluorescent response on FQs of diverse structure namely the sensitization and quenching of Eu(III) centered luminescence. The obtained regularities reveal the ternary complex formation and the ligand exchange occurring at the interface of polyelectrolyte coated [Eu(TTA)31] based colloids as the reasons of the diverse fluorescent response of Eu(III) centered luminescence on FQs. The factors affecting the fluorescent response have been revealed, which are: the content of luminescent core, the mode of polyelectrolyte deposition, concentration and structure of FQs. The discrimination of moxifloxacin and lomefloxacin from levofloxacin, ofloxacin, difloxacin, perfloxacin through the quenching of Eu(III) luminescence in PSS-[Eu(TTA)31] colloids has been revealed. © 2013 Elsevier B.V