bluuebunny/crossref_metadata_2025 huggingface dataset:
Complex psychological, pedagogical, medical and social adaptation of adolescents at risk as a strategy for the development of the city educational potential
Authors: Vorobyova Kseniya , Mishina Marina , Feoktistova Svetlana
Published: March 2021

With the aim of considering an important socially significant problem of adaptation of orphan adolescents prone to deviant behavior, the authors conducted a study of their personal characteristics on the basis of the educational institution Sinyaya Ptitsa. Sinyaya Ptitsa (Blue Bird in English) (Moscow region, Stupinsky district) is one of the first orphanages for children and adolescents in Russia. Sinyaya Ptitsa is a stationary institution that implements a set of measures for the social rehabilitation of children and adolescents. Orphan children and adolescents, who were left without parental care, temporarily live in the institution, where specialists provide them with comprehensive social, psychological, pedagogical, medical, and social aid. The respondents underwent psychodiagnostic examination and questioning in accordance with the tasks set. The results of this study allow to draw up a psychological portrait of an adolescent from a deprived background with deviant behavior, who has a file in the juvenile delinquents’ room. Their physical and indirect types of aggression are normal but close to a high level, there is a readiness to manifest negative feelings at the slightest excitement, which prevents cooperation with others, they are inclined to provoke conflicts and often use a coping strategy for solving problems in a stressful situation, in an attempt to effectively overcome a problematic life situation. This study has allowed to identify the specifics of the personal characteristics of orphan adolescents, the knowledge of which increases the level of competence and educational potential of teachers. The psychological work on the prevention of deviant behavior in adolescents will allow to improve the quality of life of the younger generation in the metropolis in the future.
International experience of territorial-spatial organization of university campuses in urban structure
Authors: Wagner Monica-Nataliia , Ovezova Umeda
Published: March 2021

Universities are important structural and functional elements of megalopolises, they carry out professional training of specialists for various spheres of society; in addition, they are scientific and cultural centers. Nowadays the issues of education improvement, in particular, its spatial organization, are especially important. In this regard, this work analyzes international experience of spatial organization of university campuses in urban structure, including determination of major forms of territorial-spatial organization of university campuses and approaches to territorial-spatial development of campuses both in urban structure and in the campus territory.
Integrative potential of educational resources in a modern metropolis
Authors: Markova Elena , Pozdnyakova Alina , Kolyadina Tatyana , Dmitriyeva Darya , Zotov Vladimir
Published: March 2021

The intensity of globalization and internationalization stimulates activity of population in the world. As a consequence, the number of Russian citizens living and getting education beyond the boundaries of the Russian Federation increases. Special load in this case is on the municipal structures rendering educational services in the Russian language. Quality improvement of teaching Russian and status of educational services in the Russian language are the social priorities and assume serious rearrangement of additional training of Russian language teachers. In this regard, it would be relevant to evaluate professional competences of Russian language teachers in schools abroad; to detect competence lacunas of additional professional education; to correct the detected professional deficits by additional educational programs of various specializations and degrees of complexity. This work is aimed at detection of development strategies of the Center as a tool of distance support for Russian schools abroad. The research methods in this work are theoretical analysis of psychologic and pedagogical, sociological, economic publications devoted to the considered problem; analysis of practices of distance support courses in Russia and abroad; surveying, testing users of existing courses; analysis of expert opinions and quality appraisals of online training; analysis of statistic data. The activity of such Center would promote implementation of the Russian Schools Abroad concept, providing opportunity of annual systematic diagnostics of state of educational and methodological resources of foreign schools, supplying Russianists with modern methodological tools, allowing foreign schools to systematically raise the level of professional competences of teaching staff.
Development of the quality of additional professional programs through the introduction of the principle of transformability
Authors: Annin Anatoly , Ashin Andrey , Gachava Maria , Kotlyarova Olga , Potapova Elena
Published: March 2021

Development and implementation of the transformability principle have been preceded by insufficient satisfaction of trainees, federal and municipal officers in particular, with the quality of conventional supplemental professional programs of further training, as well as their low motivation to learning and improvement of professional competences. This article is aimed at analysis of efficiency of implementation of transformability principle into supplemental professional programs of further training. Focused interview and focus groups method by R. Merton were the main research method. This procedure was applied during training of two focus groups according to transformable supplemental professional program titled Manage by word, aimed at development of communication competences of government representatives (309 civil officers of Tambov oblast) and officers and heads of multifunctional centers of state and municipal services (58 persons). The term “transformability” implies structuring of education route by trainees themselves as well as existence of mandatory and variable elements allowing to adapt the program content to various targeted audiences. The main results of the work have been confirmation of satisfaction of trainees with the quality of transformable supplemental professional program and improved motivation to learning.
Assessment of professional competencies of pedagogy students in the conditions of distance learning
Authors: Aigunova Olga , Salikova Evelina Mariia
Published: March 2021

The subject of the study is the creation of a system for assessing professional competencies and the formation and implementation of this system into pedagogical university students’ educational activities in the context of distance learning. The authors aim to implement the evaluation procedure in a new format due to the introduction of the High Alert State in Moscow and, consequently, remote operations. The developers are faced with the task of not only realizing the assessment of professional competencies but also maintaining the openness of the procedure, ensuring the possibility of communicative interaction between students and employers. Based on the analysis of specialized sources and as a result of discussion within the expert community, new assessment tools are proposed, and an appropriate assessment scheme is developed. The procedure is based on a competency-based approach, the development is carried out considering the requirements of the federal state educational standard, as well as the WorldSkills Russia professional skill competitions in the category “Teaching in general and secondary schools”. The procedure is tested based on the Moscow City University within the framework of the Moscow Teacher Certificate project for students. The project has been implemented since 2017, however, for the first time the project has been carried out in a remote format. The data obtained during the study make it possible to identify the possibilities of the assessment procedure in the distance learning context and the key features of students’ participation in the procedure and determine the most significant organizational aspects. Based on the results of testing, conclusions are made about the advantages and disadvantages of this procedure, both in terms of content and in organizational terms. The prospects for applying the procedure and the necessary improvements in the future are determined.
The online forum as a place of exchange of professional experience for Russian and Polish teachers
Authors: Asmakovets Elena , Koziej Sławomir
Published: March 2021

In the modern world, many aspects of social and professional life are transferred to the Internet. This also concerns the everyday functioning of teachers, particularly during the COVID-19 pandemic. The study conducted sought to determine what professional problems involve teachers who seek solutions in the virtual space. The aim of the study was to explore, describe and elucidate the matter examined. In order to explicate the current state of affairs, the following research problem was formulated: what professional issues are discussed by Russian and Polish teachers on online forums? The method for finding the answer to this question was an analysis of the content published on online teacher forums. As revealed by the analysis, the participants of online discussions raise various topics, related to the economic aspect and the prestige of the teacher profession, and everyday functioning at school as an educational and formational environment. The scope of subjects discussed proves to be fairly broad. The research showed the principal interests of Russian and Polish teachers with regard to the topics raised, and confirmed that online forums are an appropriate place to hold discussions, especially in the times of limited direct contact. Participating in online discussions allows teachers to search for answers to questions related to their profession, express their opinions on professional matters, and obtain legal advice or advice on the management of the education process.
E-learning in higher education and social development
Authors: Kassymova Gulzhaina , Kosherbayev Rinad , Arpentieva Mariyam , Kenzhaliyev Olzhas , Kosherbayeva Aigerim
Published: March 2021

The paper deals with digital education. Currently, digital education is getting popular, particularly in current pandemic event COVID 19 which has been emerged in China recently. Authors discussed online education issues. Authors reviewed different literature on e-learning and online education worldwide, as well as highlighted the online problems emerged in different countries. Now, when in many countries distance learning is actively imposed on people who do not have not only teaching aids and methodological competence for digital learning, when some people do not even have access to digital devices, there are no conditions for learning outside the classroom and there are many other problems, the problem digital inequality becomes its one channel for increasing general social inequality. Our research, which contributes to the study of current and likely future problems of digital education, its role and interaction with other spheres of society, including science and industry, is a contribution to solving the problem of social well-being, including sustainable development. Sustainable development is a controversial concept that combines two leading lines: the line of harmonization of the development of society in all its separate spheres and the harmonization of relations between spheres, and the line of achievements, evolution of each of the spheres and relations of spheres.
The role of “Children’s University” in the development of media competence in primary school students
Authors: Koziej Sławomir
Published: March 2021

The Polish education system does not offer a separate school subject dedicated to media competence. Media education is adopted within the curricula of various subjects and extracurricular activities. For many years, the system has been criticised by media education experts and perceived as requiring change. Skills related to the use of modern technologies can also be acquired outside of school with the support of other institutions, such as higher education facilities. One example may be Jan Kochanowski University in Kielce which has addressed the needs of school children for several years by conducting classes within the framework of Jan Kochanowski Children’s University. The present paper analysed the opportunities created by this type of educational programme and evaluated its effectiveness in terms of complementing school education. The data gathered from the survey, addressed to both participants (school age children) and their parents, was subjected to qualitative and quantitative analysis. The survey’s results reveal that the classes dedicated to the use of modern technologies within the framework of Children’s University play a significant role in improving the students’ media competence. Both the children and their parents point out to gaining new knowledge and skills related to the use of communication and information technologies. Furthermore, the classes encourage students to develop a critical attitude toward problems arising from the use of digital media.
Instruments of subject-to-subject interaction in blended learning: visual didactic regulators
Authors: Asadullin Rail , Shteinberg Valeriy , Manko Nataliya , Vakhidova Lyutsiya , Sytina Nadezhda
Published: March 2021

Research background implies changing the mechanisms of subject-to-subject interaction, control, and feedback when transiting to distance and mixed learning; one of the areas of difficulties that arise during such transition is the search for a way to partially compensate for difficulties using new visual didactic tools. Research goal includes searching for new visual didactic tools based on cognitive visualization of knowledge that support and guide educational cognitive activity, interaction, and feedback in the context of distance and classroom learning. The authors use a method for analyzing the development of visual tools based on the criterion of implementing cognitive principles of knowledge representation; a method for logical and semantic modeling of knowledge using universal educational actions; a method for constructing visual tools based on graphical visualization of logical and semantic modeling of knowledge presented in natural language (the language of study). New visual didactic tools developed by the authors, and implementing illustrative and regulatory functions, are proposed to be called “visual didactic regulators of logical and semantic type” and used for subject-to-subject interaction in distance learning. The basis of such tools is also the logical and semantic models proposed by the authors, whose usefulness has been confirmed by long-term testing in the classroom training; currently, regulators are used in distance learning as an experiment.
The role of digital technologies in the formation of specialists training in construction
Authors: Ksenofontova Tatyana
Published: March 2021

Media space and digital technologies occupy ever increasing area in everyday life, including design and construction of engineering structures of various purposes. Training of future specialists specializing in construction is not an exclusion. Nowadays education involves elements of real design and construction activity, such as using modern software complexes in education, which allow to study future specialty at early stage. Thus, it is possible to form required competences of future specialists for their further activity. This article analyzes experience of teaching digital technologies exemplified by the use of modern software complex: LIRA-SAPR (OOO LIRA-SAPR, Kiev).
Concepts of methodology for digitalization of additional education of children and youth
Authors: Khramtsova Flyura , Terekhova Aleksandra , Voroshilina Natalya , Andreikovets Elena , Narvoish Yuliya
Published: March 2021

The preconditions for the research are based on sustained trends of the influence of development rates of digital economy, information space in Belarus on dynamics of digital transformation of additional education of children and youth (AECY). Analysis of AECY digital transformation revealed specific properties of didactic singularity of information education environment, network clustering of resources, dynamics of media environment contour, e-technologization of didactics. The established preconditions of stability of AECY digitization as a constant of transfer to regulations predetermined the aim of this work: development, substantiation of methodological concepts of AECY digitization. The research methods included theoretical and empirical analysis, expert appraisals, simulation, forecasting. The results are comprised of development of a set of organizational and network, environmental, instrumental, technological, institutional concepts of scientific methodology of AECY digitization. The obtained results were verified in the project titled “Implementation of Republican methodological cluster as a resource of development of additional education of children and youth” (2017-2020) on the premises of National Center of Artistic Activity of Children and Youth (Minsk) in accordance with the Program of innovations of the Ministry of Education, Belarus. The novelty of the results is in introduction of the following categories into scientific usage of pedagogical science: didactic singularity of information and education environment, structure of media environment contour. The novelty of the results is reflected in authentic intelligent product of scientific and practical significance in the context of Belarus National Strategy of Sustainable Social and Economic Development–2030.
Medical Therapy of Aggressive Pituitary Tumors
Authors: Petersenn Stephan
Published: March 2021

The rare aggressive pituitary adenoma presents a special challenge, due to the heterogenous presentation of the disease. The prognosis of aggressive pituitary adenomas has been improved due to recent studies demonstrating clinically-relevant efficacy of temozolomide, which is now considered first-line chemotherapy. However, there is limited data on second-line therapies in patients with treatment failure. This review presents a summary on the potential of medical therapies in aggressive pituitary tumors.
Quality of Life Following Surgical and Conservative Therapy of Pyogenic Spinal Infection: A Study of Long-term Outcome in 210 Patients
Authors: Behmanesh Bedjan , Gessler Florian , Duetzmann Stephan , Seifert Volker , Weise Lutz , Setzer Matthias
Published: March 2021

Object The management and recommendations for treatment strategies of pyogenic spinal infection are still a highly controversial issue. The purpose of this study was to evaluate patient's quality of life (QoL) after surgical and conservative treatment of spinal infection.

Materials and Methods We conducted a retrospective, single-center study. All patients treated between 2009 and 2016 were included in this study. For evaluation of QoL, we recorded each patient's satisfaction according to the 36-Item Short Form Health Survey (SF-36) questionnaire. Scores were compared with a U.S. standard population.

Results Two hundred and ten adult patients with spondylodiskitis were identified. Of these, 155 (74%) underwent surgery and 55 (26%) were treated conservatively. The mean overall age was 68.6 (23–98) years. Seventy-two patients were females and 138 patients were males. The mean outcome values in the surgical group did not reach the level of the normative sample in one of eight items, whereas the conservative group revealed a reduced QoL in all items. Intergroup comparison revealed significant differences in all items (p < 0.05).

Conclusion In the patient population we investigated, QoL in surgically treated patients was better than that in conservatively managed patients.
Relationship between Signal Intensity of the Labyrinth and Cochleovestibular Testing and Morphologic Features of Vestibular Schwannoma
Authors: Constanzo Felipe , Teixeira Bernardo Corrêa de Almeida , Sens Patricia , Escuissato Dante , Ramina Ricardo
Published: March 2021

Objectives The aim of this article was to evaluate the relationship between signal intensity of the labyrinth and vestibulocochlear function and morphologic features of vestibular schwannoma (VS).

Design Cross-sectional Study.

Setting Tertiary referral center.

Participants Fifty-four patients with sporadic, untreated VS.

Main Outcome Measure Signal intensity of the cochlea and vestibule (SIRc and SIRv: signal intensity of cochlea/vestibule compared with cerebellar signal intensity; AURc and AURv: SIRc/SIRv of the affected side compared with the unaffected side) in 1.5T T2-weighted images was correlated with size (Hannover classification), cystic status, distance from the fundus of the internal auditory canal, video head impulse test (vHIT), and audiometry.

Results Signal intensity of the vestibule was higher than that of the cochlea (p < 0.01). Large tumors had lower SIRc than smaller tumors (p = 0.03); Hannover T1 tumors had higher SIRc (p < 0.01), SIRv (p < 0.01), AURc (p < 0.01) and AURv (p < 0.01) than the rest; heterogenous and cystic tumors had higher SIRv than solid large tumors (p = 0.02); superior vestibular nerve pattern on vHIT had higher SIRv and AURv than inferior vestibular nerve and mixed patterns (p = 0.03 and 0.004, respectively); and there was a weak correlation between AURv and speech discrimination (r = 0.33, p = 0.04).

Conclusion A more abnormal signal intensity of the labyrinth is associated with larger size and solid status of VS. There was a positive relationship between signal intensity of the labyrinth and speech discrimination scores on audiogram.
Arthroscopic Excision of Localized Nodular Tenosynovitis of Carpometacarpal Joint of Thumb: A Case Report and Review of Literature
Authors: Mane Satish A. , Bansode Anup S. , Karande Chaitanya S. , Wahegaonkar Abhijeet L.
Published: March 2021

Giant cell tumors of tendon sheath are classified according to their clinical presentation as localized or diffuse, and they may occur at intra-articular or extra-articular locations. Although magnetic resonance imaging is mandatory and sufficient for diagnosis in many cases, histological examination is needed to confirm the diagnosis. Complete surgical resection is the mainstay of treatment. Radiotherapy as adjuvant or after recurrence shows promising results. Though small joint arthroscopy, especially of the thumb carpometacarpal (CMC) joint, is a relatively new technique and mainly used for the treatment of basal joint arthritis of the thumb, the indications are evolving. We report a rare case of nodular tenosynovitis of the CMC joint of the thumb managed with complete arthroscopic resection of the tumor, and no recurrence at a follow-up of 2.5 years. This is another addition to the list of indications for thumb CMC arthroscopy. Arthroscopic treatment provides the distinct advantage of thorough assessment of the articular cartilage, complete excision of the tumor via a minimally invasive technique, early return of function, and better cosmesis. To the best of our knowledge, this is the first such report of arthroscopic resection of nodular tenosynovitis of the thumb CMC joint.
Collimated proton beam from an ultra-intense laser pulse irradiating parallel to the plasma interface
Authors: Haider M. Masum , Sheng Zheng-Mao
Published: March 2021

Recently, there has been some works on surface plasma waves excited by a laser obliquely irradiating on a thin foil target, which can cause stronger target normal sheath acceleration of protons but cannot be excited by a grazing incidence laser. Here, we demonstrate that a large amplitude Interface Plasma Wave (IPW) can be excited by a relativistic laser pulse irradiating parallel (or grazing incidence) to the interface of a solid aluminum and low density hydrogen layer. This IPW markedly enhances the sheath electric field to accelerate protons and reduce reflection of the laser pulse to improve the coupling efficiency. As a result, a collimated high energetic and lower energy spread proton beam can be efficiently achieved.
Injectable, macroporous scaffolds for delivery of therapeutic genes to the injured spinal cord
Authors: Ehsanipour Arshia , Sathialingam Mayilone , Rad Laila M. , de Rutte Joseph , Bierman Rebecca D. , Liang Jesse , Xiao Weikun , Di Carlo Dino , Seidlits Stephanie K.
Published: March 2021

Biomaterials are being developed as therapeutics for spinal cord injury (SCI) that can stabilize and bridge acute lesions and mediate the delivery of transgenes, providing a localized and sustained reservoir of regenerative factors. For clinical use, direct injection of biomaterial scaffolds is preferred to enable conformation to unique lesions and minimize tissue damage. While an interconnected network of cell-sized macropores is necessary for rapid host cell infiltration into—and thus integration of host tissue with—implanted scaffolds, injectable biomaterials have generally suffered from a lack of control over the macrostructure. As genetic vectors have short lifetimes in vivo, rapid host cell infiltration into scaffolds is a prerequisite for efficient biomaterial-mediated delivery of transgenes. We present scaffolds that can be injected and assembled in situ from hyaluronic acid (HA)-based, spherical microparticles to form scaffolds with a network of macropores (∼10 μm). The results demonstrate that addition of regularly sized macropores to traditional hydrogel scaffolds, which have nanopores (∼10 nm), significantly increases the expression of locally delivered transgene to the spinal cord after a thoracic injury. Maximal cell and axon infiltration into scaffolds was observed in scaffolds with more regularly sized macropores. The delivery of lentiviral vectors encoding the brain-derived neurotrophic factor (BDNF), but not neurotrophin-3, from these scaffolds further increased total numbers and myelination of infiltrating axons. Modest improvements to the hindlimb function were observed with BDNF delivery. The results demonstrate the utility of macroporous and injectable HA scaffolds as a platform for localized gene therapies after SCI.
The estimated effect of reducing the maternal smoking rate on neonatal intensive care unit costs in Victorian public hospitals
Authors: McCaffrey N. , Dowling G. , White S. L.
Published: March 2021

This analysis estimates the expected number of Victorian public hospital neonatal intensive care unit cot-days that could be saved annually by reducing the maternal smoking rate. Approximately 106 cot-days could be saved if the maternal smoking rate was reduced from 8.4% to 6.4% (estimated annual cost saving of A$276 000).
Factors associated with rectal pH among men who have sex with men
Authors: Kong Fabian Y. S. , Woutersen Jacqueline , Kroone Michelle M. , Hocking Jane S. , de Vries Henry J. C.
Published: March 2021

Background Rectal chlamydia treatment failures up to 22% with azithromycin 1 g have been reported, but low tissue concentrations are unlikely to be the cause. Anecdotally, low rectal pH could reduce rectal azithromycin concentrations, with in vitro studies reporting higher minimum inhibitory concentrations (MICs) with lower pHs for antibiotics used to treat sexually transmissible infections (STIs). Leucocytes arising from an inflammatory immune response could also lower pH and efficacy. We examined factors that may alter rectal pH and potentially influence treatment outcomes. Methods: We recruited consecutive men who have sex with men (MSM) from a Dutch STI clinic between October 2016 and July 2018 who had not used antibiotics in the past fortnight. Rectal mucus collected under anoscopy using a cotton swab was used to wet a pH indicator strip. Logistic regression was used to examine the association of pH <8.0 to demographic, dietary, sexual health and behaviour data, recent medication use and STI diagnosis. Results: In total, 112 MSM were recruited (median age 37 years). It was found that 45% and 39% of men were HIV positive or had a rectal infection, respectively. And 50% had a rectal pH <8.0, with 27% reporting a pH between 6.0 and 6.5 where treatment failure is thought to occur for azithromycin. The adjusted odds ratio (OR) of a pH <8.0 showed that being aged 36–45 years (OR 6.7; 95%CI: 1.9–23.4) or having high rectal leucocytes in a Gram smear (OR 0.3; 95%CI: 0.1–0.7) were significantly associated with a low and high rectal pH, respectively. Conclusions: Lower rectal pH among MSM is associated with older age and could influence the rectal pharmacokinetics of azithromycin and other drugs influenced by pH and may therefore affect treatment outcomes.
Modelling interfaces with context in SFL
Authors: Taverniers Miriam
Published: March 2021

This is a study of the tools for describing language-in-context in Systemic Functional Linguistics (SFL), and
specifically, the way in which dynamic time can be added to this description. Of central importance in this exploration are the
concepts of stratification and instantiation and their interaction, and the way in which this interaction is ‘achieved’
metafunctionally and dynamically through the construction of relevant contexts spanning various time scales. The article proposes
a new theorization of context in SFL, in which context is regarded as an interplay of different interfacing semiotic strata, and a
meshing of multiple complementary and interacting processes of mediation which are at work at different scales of semogenesis.
Dynamic property investigation of segmented acoustic black hole beam with different power-law thicknesses
Authors: Fu Qidi , Du Xiaofei , Wu Jianwei , Zhang Jianrun
Published: March 2021

Traditional acoustic black hole (ABH) structure that usually has a wedge-shaped structure with unchanged power-law profile has been studied extensively. Embedding an ABH in a thin-walled structure can help the system to control the flexural wave to realize vibration damping and energy concentration. However, due to the limitations of processing and manufacturing technology, the structural thickness of the ABH region cannot completely reach zero and will always leave a truncation at the tip of the ABH region, which makes ABH structure cannot give full play to the effect of ABH. In this paper, we show that a beam with segmented ABH structure whose baseline is segmented into two portions and they are respectively subjected to different power functions can effectively improve the effect of ABH. A semi-analytical method is adopted to establish the dynamical model of the segmented ABH beam under the clamped-free boundary condition. Finite element method and experimental method are carried out to verify the accuracy of the semi-analytical model. The segmented ABH effect of the beam is analyzed by the comparison of segmented ABH beam, conventional ABH beam, and uniform beam. In addition, the influence of the damping layer location on the dynamic response of the segmented ABH beam is studied as well. The numerical simulation results show that the vibration energy of segmented ABH beam can be more effectively shifted to the ABH area, thus enhancing the energy concentration effect and vibration attenuation. Moreover, the results also reveal that attaching the damping layer to the tip of the segmented ABH structure can effectively improve the system modal loss factor and achieve better vibration attenuation. The research of this paper can give rise to explorations of different innovative ABH structures and broaden the application of ABH beam structures in engineering.
Joule–Thomson expansion of higher dimensional nonlinearly AdS black hole with power Maxwell invariant source
Authors: Feng Zhong-Wen , Zhou Xia , He Guansheng , Zhou Shi-Qi , Yang Shu-Zheng
Published: March 2021

In this paper, the Joule–Thomson expansion of the higher dimensional nonlinearly anti-de Sitter (AdS) black hole with power Maxwell invariant source is investigated. The results show the Joule–Thomson coefficient has a zero point and a divergent point, which coincide with the inversion temperature T

i
and the zero point of the Hawking temperature, respectively. The inversion temperature increases monotonously with inversion pressure. For the high-pressure region, the inversion temperature decreases with the dimensionality D and the nonlinearity parameter s, whereas it increases with the charge Q. However, T

i
for the low-pressure region increase with D and s, while it decreases with Q. The ratio η
BH between the minimum inversion temperature and the critical temperature does not depend on Q, it recovers the higher dimensional Reissner–Nördstrom AdS black hole case when s = 1. However, for s > 1, it becomes smaller and smaller as D increases and approaches a constant when D → ∞ . Finally, we found that an increase of mass M and s, or reducing the charge Q and D can enhance the isenthalpic curve, and the effect of s on the isenthalpic curve is much greater than other parameters.
Magnetic phases and phase diagram of spin-1 condensate with quadrupole degrees of freedom
Authors: Bulakhov M S , Peletminskii A S , Peletminskii S V , Slyusarenko Yu V
Published: March 2021

We obtain and justify a many-body Hamiltonian of pairwise interacting spin-1 atoms, which includes eight generators of the SU(3) group associated with spin and quadrupole degrees of freedom. It is shown that this Hamiltonian is valid for non-local interaction potential, whereas for local interaction specified by s-wave scattering length, the Hamiltonian should be bilinear in spin operators only (of the Heisenberg type). We apply the obtained Hamiltonian to study the ground-state properties and single-particle excitations of a weakly interacting gas of spin-1 atoms with Bose–Einstein condensate (BEC) taking into account the quadrupole degrees of freedom. It is shown that the system under consideration can be in ferromagnetic, quadrupole, and paramagnetic phases. The corresponding phase diagram is constructed and discussed. The main characteristics such as the density of the grand thermodynamic potential, condensate density, and single-particle excitation spectra modified by quadrupole degrees of freedom are determined in different phases.
Technological Solutions for Slant Directional Drilling Project Challenges
Authors: Anishchenko V I , Zhabin A B , Averin E A , Polyakov A V , Linnik Y N , Linnik V Y
Published: March 2021

The paper describes an experience in the field of slant directional drilling in oil industry, which is currently under pressure. The experience helping to meet drilling projects’ challenges in an effective way has been approved for a several years of work at quite a few projects in different countries. The paper includes some design and technological tricks to overcome standard problems arising during slant directional drilling of oil wells such as entering the ground, maintaining the drilling trajectory, adjusting of an axis misalignment between the rig’s central shaft and the drill line, choosing proper pumps and adjusting pumping pressure, and keeping the drill rods and casings from sliding into the hole from an inclined mast.
Concept of Ensuring Environmental Human Well-Being
Authors: Bezborodova O E , Bodin O N , Chuvykin B V
Published: March 2021

The influence of environmental factors on the population life and activities is beyond any question. Technogenic objects change the quality of the environment and influence its state. It is extremely important to take measures on control and minimization of such action with the use of modern technologies. A large number of researchers study this problem and propose their solutions based upon the principles of the program “Digital Economy”. The advantages of these projects include the line of the research targeted at the prevention of possible threats to human life and safety. The disadvantages consist in the fact that the papers consider either normal or emergency situations; besides, there is no an integral indicator used to describe the human state in such designed environment. The authors propose a Concept of human environmental well-being (HEW CONCEPT) allowing for the generation of methods, ways, algorithms and methodologies for timely identification and elimination of hazard parameters and medical aid provision with the application of modern technologies.
Improving the Technology of Dust Deposition from the Air of Livestock Premises Using an Electrostatic Precipitator
Authors: Cherkasova N G , Chepelev N I
Published: March 2021

This paper provides recommendations based on calculations of the consistent placement of dust separating devices for treating air of livestock premises. This study is relevant due to the fact the atmospheric air and, specifically, the air of livestock premises, always contains a certain amount of dust. Dust accumulation in the air of livestock premises is associated with foddering, premise cleaning, animal cleaning, and animal bedding laying. Dust content in the air livestock premises fluctuates during the day depending on the livestock and poultry foddering and feeding system, ventilation, as well as the manure removal method. From a hygienic standpoint, dust affects the animal organism directly and indirectly. The indirect effect of dusty air is associated with moisture droplets depositing on dust particles and creating fogs. Dust and fog absorb a significant part of solar radiation and worsen the photoclimate, while a layer of dust and soot settling on the windows of livestock premises reduces the natural illumination of the latter. The atmospheric air and the air of livestock premises contain various microorganisms along with dust and smoke. There is a direct relationship between dust content and the number of microorganisms since they usually settle on dust particles.
Evaluation of the Thermal Radiation Intensity During a Fire in the Oil Tank Farm Dike
Authors: Udartseva O V
Published: March 2021

Petroleum product storage facilities are explosion and fire hazard systems. The occurrence of an accident with oil spillage followed by a fire creates the danger of exposure of humans and the environment to thermal radiation. The most typical emergency is a fire of spills in the dike. This paper proposes a technical solution aimed at reducing the fire and explosion hazard for oil tanks. The thermal radiation intensity during a fire of spills in the dike has been calculated. The need to protect the oil storage tank farm with a fence wall with a wave deflector baffle has been proposed and mathematically justified. Along with reducing the likelihood of oil spills at the destruction of a vertical steel tank, this appliance will reduce the environmental consequences of a man-made accident.
Longitudinal Pochhammer - Chree Waves. Secular Equations and Spectral Analysis
Authors: Gadzhibekov T A
Published: March 2021

The paper presents the spectral analysis of the Pochhammer - Cree matrix dispersion equation for longitudinal axisymmetric modes. Analytical solutions of the matrix dispersion equation describing the propagation of longitudinal harmonic waves in an infinite cylindrical rod are analyzed. Expressions for displacement fields are obtained. The dependence of displacements on the surface on the angular frequency and Poisson’s ratio is analyzed. When the phase velocity is equal to the transverse wave velocity, the displacements on the surface completely disappear, which means that no axisymmetric Pochhammer - Cree waves propagate with such a phase velocity.
The Dynamics of Changes in the Concentration of Polluting Components in Discharges of Enterprises of Electrometallurgical Profile and the Development of a Range of Environmental Measures for Wastewater Treatment
Authors: Zvyagintseva A V , Sazonova S A , Kulneva V V
Published: March 2021

A study of the dynamics of change in the concentration of pollutants discharges from electrometallurgical enterprises was carried out. Analytical data are presented for the following ingredients: suspended substances, dry residue, chlorides, sulfates, nitrates, nitrites, ammonium nitrogen, fluorides, iron in general. Possible ways of reducing harmful discharges into the water intake facility (Oskol River) have been analyzed, and the most effective method of combating them for the conditions of the Oskolsk electrometallurgical industrial complex (OEMIC) has been chosen. The use of electrolytic hydrogen for the electroflotation of pollutants from aqueous solutions in the technological processes of water treatment for reuse in the water supply systems of electrometallurgical enterprises is proposed.
Features of Interaction of Crushed Daurian Larch Bark with Petroleum Products
Authors: Zhebsain V V , Zhebsaina S M
Published: March 2021

The work summarizes a series of publications devoted to the study of the sorption capacity of the bark of the Daurian larch, in terms of studying the possibility of its use as a source material for the production of a sorbent for cleaning reservoirs from oil pollution. A simple method of processing the bark of Daurian larch is proposed, which leads to a significant increase in its sorption qualities. The results of experimental studies of the density and sorption capacity of larch bark, as well as the results of spectral studies of its structure, are presented. The conducted research allowed us to determine the mechanism of increasing the porosity of the bark of the Daurian larch during its hydrothermal treatment and, as a result, leading to a significant increase in sorption capacity.
Risk Management in Transportation Safety System
Authors: Finochenko T A , Dergacheva L V , Yaitskov I A
Published: March 2021

This article presents a conceptualized analysis of technology-related risks for a transportation safety system. It also considers its subsystems that impact safety. The scheme developed allowed defining the key factor influencing transport safety through accounting various destabilizing impacts. The authors claim that the human factor is the key one, which is especially true for locomotive crews responsible for transportation. Locomotive crew working conditions are described in a visualized combination of negative effects people suffer in an engine cab. Based on the statistics collected and analyzed, the article presents specific occupational diseases of transportation workers. The dynamics of mental capacity and the state of the cardiovascular system of locomotive crews were analyzed using the WAIS test. The research results can be used in the practices of the Russian Railways to facilitate the efficiency and coherence in decision making related to labor safety.
Method of the Assessment of the Eutrophication of the Waters of the Gulf of Taganrog of the Sea of Azov Subject to the External Load on the Water Area
Authors: Zhidkova A Y , Bednaya T A
Published: March 2021

Eutrophication of waters is a complex problem that is widespread all over the world. These process especially intensified during the last century because of the human activity which lead to the anthropogenic transformation of water reservoirs. The object of the study – the Gulf of Taganrog of the Sea of Azov – also subject to the processes of waters eutrophication. So the research evaluates the Gulf ecosystem from the standpoint of eutrophication. The method of such assessment was developed. It includes the regression analysis and mathematical modelling. The study showed the change in the type of eutrophication of a water body from the mehotrophic type to the eutrophic one; the estimation of the inflow of the concentrations of ammonium ion, nitrate and phosphate into the waters of the Gulf showed the sources that influence this income mostly; the natural load influences the ecosystem most.
To Study Some Characteristics of Porosity of Organomineral Sorbents Obtained by Electroplasmic Processing from Coal Flotation Waste
Authors: Kondratenko A S , Buyantuev S L , Galeguzova I A
Published: March 2021

The article considers the basis for creating organic mineral sorbents with a highly developed porous structure from coal mineral raw materials aimed at developing methods for deep processing of waste coal enrichment - coal cake of the Tugnui coal processing plant by means of electroplasmic activation of its substance, with the development of technology for obtaining carbon sorbents, with the study of their porosity characteristics, the average diameter of macropores for judging the degree of thermal destruction and activation occurring on the surfaces of dispersed cake particles during electroplasmic processing during the implementation of a comprehensive study of coal-mineral raw materials designed to further develop the scientific basis for creating organic-mineral sorbents for wastewater treatment. The article provides microscopic analysis of the composition of the substance of coal-mineral raw materials, data on the composition of minerals included in the substance, determines the composition of the functional groups of cake before and after thermal exposure using IR-spectroscopy, as well as using optical microscopy, studies the porosity of the organomineral sorbent and calculates the average size of macropores.
Quail Droppings Utilization System
Authors: Antonov A , Ivanov G , Pastukhova N
Published: March 2021

Agriculture creates a greater impact on nature than any other sector of the economy. Pollution of the environment by poultry and livestock enterprises is most often due to the imperfection of the technologies and technical means used, non-compliance with established environmental requirements. Special attention should be paid to the problem of processing poultry farms’ and enterprises’ waste, a large proportion of which is droppings. Fresh bird droppings from a poultry farm is dangerous for human health, and considered to be environmental hazard of the third class. The technology proposed for the utilization of fresh bird droppings is brand new and have no analogues in Russian Federation. It bases on the bioconversion process of the droppings from poultry farms with the help of Black Soldier Fly larvae (Hermetia illucens L.). The system proposed gives a solution to several problems: utilization of poultry wastes (bioconversion: 4.9…6.3 kg/m2/day.), using dried fly larvae as a protein rich feed additive in feed production (0.2…2.1 kg/day/m2 larvae); it also supplies agricultural enterprises with organic fertiliser (zoohumus) (zoohumus output: 11.3 12.5 % from 1 kg of wastes). The proposed system has features of production greening, the technology is characterized by the maximum efficiency of agricultural waste recycling and enables to increase the diversity of poultry enterprises functions.
Waste Management of Mining Enterprises of the Arctic Zone of the Russian Federation, Case Study for Murmansk Region
Authors: Tsukerman V A , Ivanov S V
Published: March 2021

The paper discusses relevant problems associated with the exploitation and processing of mineral waste accumulated from mining enterprises during the industrial era. To ensure the preservation of a vulnerable Arctic environment it is necessary to search for the new innovation technologies aimed at increasing the comprehensive use of waste for various purposes of the national economy. The main aim of the work is to assess the efficiency of industrial waste management for the period 2010-2019 by the Arctic mining enterprises which provide open access to the necessary research information. The methodological basis of the analysis are annual reports of enterprises, official documents and scientific publications. The analysis showed that wastes of I-III hazard classes are significantly reduced which meets the requirements of the legislation but wastes of IV and V classes showed multidirectional dynamics and growth respectively. It is shown that for the further improvement of the waste management system there is a need of directions for the search for new comprehensive approaches as development of innovation technologies, reuse of waste with release of new products as part of transition to a circular economy and use of green technologies.