Electroflotation Extraction of Sparingly Soluble Compounds of Titanium (TiO2) from Liquid Technogenic Waste

This paper presents basic information about applications, properties and extraction of titanium dioxide from liquid technogenic waste. Titanium dioxide is widely used in the production of ceramics, electrodes, etc. During the experiments using filtration, a recovery rate of 95% was achieved. Using the electroflotation method, a recovery rate of up to 50% was achieved. Subsequently, when complex additives are added, the degree of extraction by the electroflotation method reaches 95%. Keywords: water treatment, titanium dioxide, electroflotatio

Initiation of Polarized State in the Tantalum Oxide Thin Films Grown by Magnetron Sputtering on a Substrate of Monocrystalline Silicon (100) Followed by Argon and Oxygen Ions

The pictures of the induced state and the surface potential distribution in thin films of tantalum oxide produced by magnetron sputtering onto a substrate of monocrystalline silicon (100) followed by low energy argon and oxygen ions was investigated by atomic force microscopy in spreading resistance and scanning Kelvin probe microscopy mode. It was shown that it is possible to polarize or depolarize the coating, and then to visualize the state of the induced polarization using an electric field applied via the conductive cantilever in contact spreading resistance microscopy mode. It was found that treatment with argon ions increases the contrast of the of the surface potential distribution maps from 1.2 V to 2,3 V for negative – 10 V voltage on the probe and from 9,6 V to 19,2 V for a positive + 10 V voltage in comparison with the oxygen ions

Change of physical properties of arable chernozem in the initial period of the after agricultural abandonment regime

ArticleA field experiment was conducted in the botanical garden of the South Federal University (Rostov-on-Don, Russia), which was aimed at converting the old arable land plot to the arable regime. Physical properties of chernozems were studied during the first years of the postagrogenic period in different plots, such as: a virgin steppe plot, an arable plot and an abandoned plot. During the course of the experiment it was revealed that physical properties of postagrogenic soils change due to vegetation development after tillage is discontinued. Within three years of research a biological diversity of the floristic composition in the abandoned plot increased from 9 species (during the first year) up to 38 species of plants (3 years later). Vegetation development served as a cause of changes in physical properties of chernozems. Temperature of the abandoned soils decreased along with soil moisture growth, if compared to the relevant indices of the arable plot of land. Owing to the root development and cessation of the agricultural impact, density of the upper horizon in the abandoned plot dropped by 10% on average. A positive correlation was revealed between the chernozem density and its penetration resistance (r = 0.70) and temperature (r = 0.73), whereas an inverse correlation was detected between the chernozem density and its moisture content (r = -1.0)

Super Heavy Nano Reinforcing Concrete

The properties of modern heat resistant super heavy concrete reinforced by chrysotile nanotubes are described. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3522

Современные подходы к разработке специфической терапии особо опасных токсикоинфекций

Category A select agents continue to be major threat to human population both as naturally occurring diseases and as potential weapon of bioterrorists. Anthrax and botulism are probably the most threatening agents as both have virtually uncontrolled natural reservoirs from which they can be isolated and propagated. Available specific antitoxin therapy of both diseases is outdated; its efficiency is questionable as well as safety of reactogenic or human-derived components used in treatment. Highly sensitive toxin detection techniques are still not as widespread as it needed for timely alerting medical services. There is urgent need of pre-exposure prophylaxis and postexposure specific antitoxin therapy for anthrax and botulism. Analysis of modern studies in the field suggests oligoclonal antibodies acting against receptor-binding toxin subunits and nucleic acid aptamers as allosteric inhibitors of metlloproteolytic toxin components as the most promising candidates for development of efficient antitoxin therapyОсобо опасные токсикоинфекции являются значительной угрозой здоровью населения и нерешенной проблемой обеспечения биологической безопасности. Наибольшую опасность представляют собой ботулизм и сибирская язва, которые не только имеют практически не контролируемые природные резервуары, но также могут служить возможным оружием биотеррористов. Специфическая терапия этих заболеваний практически отсутствует, существующие методы имеют ограниченные возможности применения и низкую эффективность, в то время как высокочувствительная ранняя диагностика еще не получила широкого распространения. Необходима срочная разработка средств специфической терапии и экстренной профилактики ботулизма и сибирской язвы. Анализ современных тенденций развития этих направлений показал, что на данный момент, вероятно, наиболее перспективными технологиями для создания антитоксинов являются олигоклональные антитела и аптамеры, аллостерически ингибирующие активность эффекторных компонентов обоих токсинов — цинкзависимых протеаз

Global Supply Chain Trends in the Digital Economy Development and Its Individual Tools

Abstract The modern development of the world economy is accompanied by an increase in the role of science and innovation, the spread of information and communication technologies (ICT), including robotics. Today, ICT can be considered a leading factor in the arrangement of production and business processes, education, interaction of various subjects of society (state, organizations, and population), obtaining knowledge and information, leisure activities, and trade. ICT strengthen the material and technical base and stimulate socio-economic development, increasing the competitiveness and productive potential of the country’s economy. This topic is currently relevant, as the information society involves the widespread use of various information technologies in all areas of our activities. For example, at the moment in our society, a huge role is played by robotics, systems for distributing, storing and processing information that are based on computers. More and more inter-regional and international connections are being formed, which allows the exchange of information over long distances in the shortest possible time. In addition, the number of organizations using robotics is growing every day

Directions of Digital Technologies Development in the Supply Chain Management of the Russian Economy

Abstract— The main objective of this paper is to investigate the digitalization and technologies impact on supply chain management of agricultural industry.  This paper provides practical examples of supply chain digitalization, as well as its socio-economic and environmental effects. The absence of processes that are compatible with the high production requirements adopted in foreign markets can lead to crisis phenomena in domestic industries with high potential and rapid growth dynamics in agriculture industry. Agriculture in Russia is an integral part of the agro-industrial complex, and the program “Digitalization of its supply chain” should provide participants with the opportunity to use broadband, mobile, LPWAN communications, information technologies (small and big data, management platforms, etc.) of the domestic instrument industry (tags, controllers, sensors, control units) to improve significantly the efficiency of agriculture. The opportunities for modernizing the industry are huge. Food security of the country and the development of export potential, turn agriculture into a high-tech industry that can not only provide food for itself, but also many countries of the world through the global supply chain system, as well as create opportunities for the introduction of new innovative developments that have not exist before, stimulate management decisions that can provide the population with high-quality and safe products. According to expert estimates, during the season, the farmer has to make more than 40 different decisions in limited time intervals. Many of these solutions, which affect directly the production economy, are objects of digitalization in supply chain

Effect of Bias Fields on off-Diagonal Magnetoimpedance (MI) Sensor Performance

This paper investigates the performance of off-diagonal magnetoimpedance in Co-based amorphous wire subjected to dc bias fields: circular and orthogonal (with respect to the wire axis). Typically it is as-sumed that the wire impedance is insensitive to the orthogonal field so the wire element can be used to construct 3D sensors. Our results demonstrated the possibility of large impedance change due to this field, in the range of 10 mV/Oe. The dc current in a wire generating a circular field results in improved sensitivi-ty due to elimination of the domain structure and smoothing the effect of the anisotropy deviations. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3633