Paraffin Blockage Specificsin Model Petroliferous Systems

In this paper we study the effect of the temperature factor, the content and composition of the dispersed phase components: paraffinic hydrocarbons, resins and asphaltenes, – on the sedimentation process in model systems. Adding a 0.025 to 0.1 wt.% of resins and asphaltenes doping agent to a 20 wt.% paraffin wax solution in kerosene shall be optimalto resist precipitate formation. Asphaltene and resin compositions, derived from the methane-kind petroleum-oil, are characterized by a maximum ability to prevent sedimentation. The presence of resins and asphaltenes in a model system shall significantly affect the physical and chemical characteristics of the sediment

Study of natural formation and anthropogenic change in soils for sustainable land-use

In this work, we have presented an approach to rational territorial organization of the environment with the aim of harmonizing natural, economic and socio-demographic processes. Successive stages of the action for the development of basin nature management projects are proposed by us. Design technology rational land use is implemented for one of the small river basi

Effect of natural surface-active substances on the rheological properties of emulsions

The effect of natural surface-active substances on the formation of emulsions in oils with different content of resin-asphaltene components (RAC) and paraffin hydrocarbons (PHC) (RAC/PHC from 0.7 to 95) is studied. The influence of oil composition and content of aqueous phase on microstructure, rheological properties, and activation energy of viscous flow of water-oil emulsions is shown. For oils with the ratio RAC/PHC < 1, the increase in water cut results in an increase in viscosity, activation energy of viscous flow, and pour point

Development of digital marketing technologies for promoting educational services of Russian universities in the context of global transformations

The article substantiates the need to use digital marketing tools to promote Russian educational services to the international educational market. The concept of a marketing information campaign to promote educational services in foreign countries is proposed, which provides for the use of channels and means of interaction with target groups to form an attractive image of the higher education system and encourage foreign applicants to enroll in Russian universities. Conclusions are formulated about the inclusion in the list of works on the development of the information component of the brand promotion of Russian universities of measures for search SEO optimization of university sites, more active use of SMM tools, the use of targeted, contextual advertising, positioning and placement of information on foreign Internet portals

Effect of mechanical activation on the composition if mineral components in humic acids isolated from carbons

It is shown that the mechanical activation of oxidized and brown coals is accompanied by an increase in the yield of humic acids and in their content of functional groups. It was demonstrated by atomic-emission spectroscopy that, under a high-intensity mechanical treatment, mineral elements are redistributed in the coal substance and incorporated into the structure of humic acids

Energy of dispersing of loamy soils to elementary particles using ultrasound

Elementary soil particles are the first soil-specific level in the soil structure hierarchy, which is also the object of the soil texture analysis. To disperse soil solids to elementary soil particles (ESP), it is necessary to break the strong bonds between particles by physical action. An effective way of physical dispersion is to treat soil suspensions with ultrasound. However, depending on the type of soil, the required energy level varies, as it is determined by the stability of the soil structure. In this work the experiment with increasing energy (from 65 to 1 101 J·mL-1) of ultrasonic dispersion at constant power equal to 32.4 W is described. Soil samples from the upper horizons of three types of loamy soils (Retisol, Phaeozem, Chernozem) were used in the experiment. For this purpose, a horn-type ultrasonic disruptor Digital Sonifier S-250D (Branson Ultrasonics, USA) with a stepped solid horn tip (13 mm) was used. It was found that the value of the total energy of dispersion Et required for complete destruction of soil aggregates to ESP depends on soil type and varies within 200–800 J·mL-1 for loamy soils with an organic matter content of 1.8–4.6 g. 100 g-1 soil. For sample preparation of soils for grain-size analysis with a subsequent determination of soil texture class according to Kachinsky classification, the value Et = 250 J·mL-1 is sufficient, as it allows obtaining the maximum amount of physical clay (&lt;10 µm) at the minimum duration of sample preparation

Professional preferences and employment prospects of young people with disabilities

Today, the mainstream in the development of inclusive social initiatives is to create equal conditions for every member of society. The results of sociological studies that determine the main preferences in the field of career building and employment opportunities for young people with disabilities are presented. The main behavioural characteristics of this category of young people are described. The most useful skills acquired in the process of studying in educational institutions were the ability to listen, manage time, conflicts. These are the qualities that any person needs to effectively organise his life, establish contacts, establish interpersonal relationships. The study revealed the desire of young people with disabilities to look for work, find a job, but often the jobs provided by employers do not meet the necessary minimum requirements or the physical abilities of job seekers do not allow them to find a job. This study has made it possible to outline the range of problems faced by young people with disabilities in finding employment and choosing a career

Linguistic Image of Russia in American Printed Media (Case-Study of Headline Complexes)

The paper presents a linguistic image of Russia as shown by the US printed media. The study was conducted with two interrelated and complementary methods: that of describing associative semantic field and that of investigating qualia-structure of the concept, based on the generative lexicon theory by J. Pusteiovsky. Both methods resulted in building a layered concept structure with a core, a transition zone and periphery. For the purpose of the study, a corpus containing 3636 collocates with "Russia" as the key word was derived from headline complexes of US printed media: The Washington post and the New York Times. The analysis of the structure and composition of the associative semantic field has enabled the author to confirm significant influence of extralinguistic factors on the construction of linguistic images. The study involved processing previously made corpus with corpus management software to provide numeric data on lexemes frequency. Associative semantic field revealed the newsworthy events that put Russia in focus in headlines complexes: President Election of 2016 and investigation of Russia's supposed involvement, intelligence services and related causes celebre, sanctions, armed conflicts, coronavirus spread and oil prices fluctuations. Qualia-structure semantic analysis brought forth the main frames in the Russia concept structure: Russia as an aggressive power, Russia as a counterpart, Russia as a partner, and Russia as a destination

Improving Health Industries by the Supply-Chain Policy

Abstract— the article deals with issues of the policy in the sphere of protection of a Supply-Chain management’s rights and legitimate interests in the health centres. The issues of protection of the rights of Supply-Chain management in the field of health care revealed. In today's global and national economy, businesses are increasingly relying on outsourcing some of their activities and processes. Therefore, more and more companies at the Supply-Chain level, in specific networks, operate and compete with their suppliers and service providers. This process of outsourcing and the growing importance of supply chains has its consequences in the working conditions and health and safety of workers of supply companies and contractors. There are two main networks of Supply-Chain or relationships between companies and members of their supply chain: the main network (a company and suppliers of its specific goods and materials) and the secondary network (a company and its contractors and subcontractors special services such as activities Maintenance, construction, cleaning or catering This report provides an overview, analysis, conclusions and recommendations on how to upgrade health centers through the above Supply-Chain networks