bluuebunny/crossref_metadata_2025 huggingface dataset:
ТЕХНОЛОГИЯ ОЧИСТКИ И РЕЦИКЛИНГА БУРОВОГО РАСТВОРА
Authors: Третьяк Александр Александрович , Яценко Елена Альфредовна , Борисов Константин Андреевич , Карельская Екатерина Витальевна
Published: February 2022

Ссылка для цитирования: Технология очистки и рециклинга бурового раствора / А.А. Третьяк, Е.А. Яценко, К.А. Борисов, Е.В. Карельская // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2022. – Т. 333. – № 2. – С. 62-70.

Актуальность исследования обусловлена тем, что бурение скважин является основным видом работ при разведке нефтегазовых георесурсов. При этом, по оценке специалистов, ежегодно образуется более 5 миллионов м3 бурового шлама, из которого только 4 % перерабатывается для нужд производства. Проблема выделения шлама из бурового раствора и его переработка в настоящее время стоит остро как никогда. Выполненные экспериментальные исследования позволили установить влияние постоянного магнитного поля на буровой раствор и на содержание твердой фазы, а также на структуру образца высушенной корки. Выполненные исследования химического состава буровых шламов Морозовского и Восточно-Чумаковского месторождений Краснодарского края позволили разработать технологию и рекомендовать изготовление пропанта непосредственно в полевых условиях, на месторождении. Цель: разработать эффективную технологию очистки и рециклинга бурового раствора и предложить способ получения пропанта непосредственно на участках буровых работ. Объекты: скважины, сооружаемые при разведке георесурсов на Морозовском и Восточно-Чумаковском месторождении Краснодарского края. Методы: экспериментальные исследования бурового раствора с целью улучшения качества его очистки, лабораторные исследования состава шлама и рециклинг для получения пропанта. Результаты. Решение поставленных задач позволило предложить эффективную схему очистки бурового раствора с использованием устройства для омагничивания в постоянном магнитном поле. Выявлен механизм ускорения выпадения бурового шлама в осадок. Изучение раствора под микроскопом позволило выявить кластерные структуры, способствующие увеличению вязкости раствора на 20 %, снижению водоотдачи до двух раз, увеличению интенсивности выноса шлама на поверхность и снижению коррозии до 30 %. Установлено время релаксации бурового раствора – в течение 20 часов после омагничивания в постоянном магнитном поле напряженностью 2200 эрстед.
РАЗРАБОТКА МЕТОДИКИ ОПРЕДЕЛЕНИЯ НЕОРГАНИЗОВАННЫХ ВЫБРОСОВ ПРИРОДНОГО ГАЗА В АТМОСФЕРУ
Authors: Байков Игорь Равильевич , Китаев Сергей Владимирович , Шаммазов Айрат Мингазович , Зубаилов Гаджиахмед Исмаилович
Published: February 2022

Ссылка для цитирования: Разработка методики определения неорганизованных выбросов природного газа в атмосферу / И.В. Байков, С.В. Китаев, А.М. Шаммазов, Г.И. Зубаилов // Известия Томского политехнического университета. Инжиниринг георесурсов. – 2022. – Т. 333. – № 2. – С. 71-80.

Актуальность. Природный газ в настоящее время является безальтернативным углеводородным ресурсом, используемым преимущественного как топливо. Основным компонентом природного газа является метан, его содержание в газе превышает 95 %. При транспортировании природного газа по трубопроводам неизбежно появляются неорганизованные выбросы через разъемные соединения. Метан относится к парниковым газам и приводит к потеплению климата. Парижское соглашение, ратифицированное Россией, предполагает сокращение выбросов парниковых газов для снижения нагрузки на окружающую среду. Результаты, рассмотренные в статье, являются актуальными, т. к. приведенные рекомендации позволят повысить эффективность контроля за неорганизованными выбросами метана в окружающую среду. Цель: разработка методики определения объема утечек природного газа в атмосферу через разъемные негерметичные соединения на газопроводах с помощью лазерного детектора метана, регистрирующего величину утечки. Методика предполагает разработку аналитических моделей для пересчета линейной концентрации метана в области утечки в объемные значения. Объекты: экспериментальная установка, предназначенная для моделирования утечек природного газа в атмосферу. Стенд позволяет моделировать утечки различной интенсивности с помощью специальных сменных заглушек, имеющих отверстия различного диаметра. Методы. Для обоснования предлагаемых положений использовались методы наименьших квадратов, асимптотических координат, порядковых статистик. Результаты. Представлена методика количественного определения эмиссии метана через разъемные соединения газотранспортной системы. Для разработки методики был специально спроектирован и изготовлен лабораторный стенд, с помощью которого были получены эмпирические данные для аналитических моделей пересчета линейной концентрации метана в области утечки в объемную концентрацию.
Implementasi Metode Beda Hingga Tak Standar untuk Model Penyebaran Campak
Authors: Rizqyah Ilfa Wardatul , Kusumastuti Ari , Widayani Heni
Published: February 2022

The measles distribution model is a system of differential equations that is included in a continuous dynamic system. This research focuses on transforming the continuous form into discrete form by discretization using non-standard finite difference and stability analysis which is then carried out by numerical simulations to prove its stability graphically. Based on the analysis, it is found that the measles distribution model which is assumed to have two fixed points, namely the disease-free fixed point (R_01) and the endemic fixed point (R_01), is stable. The stability of the two fixed points is proven by the Schur-Cohn criteria and is obtained stable with the condition 0ϕ(h)≤5 which meets the value of h0. The results of the numerical simulation show that the measles distribution model is dynamically consistent and tends to the fixed point. In addition, numerical simulations show that the larger the value of h, the more the graph tends to the fixed point.
Formación de postgrado en actividad física adaptada en Uruguay
Authors: Rubinstein Sofía , Franco Vanessa
Published: February 2022

En sintonía con los avances en el campo de la actividad física adaptada y de la labor docente bajo el paradigma de la inclusión, este estudio se centró en analizar aspectos de la malla curricular de la especialización en Actividad Física Adaptada y Discapacidad del Instituto Universitario Asociación Cristiana de Jóvenes de Uruguay, a partir de la perspectiva de los estudiantes de la primera cohorte. Para la metodología se optó por un diseño mixto de triangulación realizado en dos etapas. En la primera de corte cuantitativo, se aplicó un cuestionario en formato digital a los 12 alumnos inscriptos y en la segunda, de carácter cualitativo, se llevó adelante una entrevista grupal con cuatro estudiantes que aceptaron voluntariamente participar. Los resultados alcanzados en 17 asignaturas muestran que los sujetos participantes están conformes con la calidad de los contenidos, la profundidad en cómo son presentados y la bibliografía sugerida por los docentes con promedios entre 3,6 y 4,8. Las dos asignaturas restantes obtuvieron promedios de 2,5 y 3,1, lo que plantea el desafío de realizar cambios en sus propuestas. Se concluye que la especialización es un importante espacio de formación, que colabora en la mejora de la práctica profesional de los profesores de Educación Física que desarrollan su trabajo, tanto en el área de la actividad física adaptada como en contextos inclusivos.
Rhizoctonia solani and Its Biological Control
Authors: AYDIN Mehmet Hadi
Published: February 2022

Rhizoctonia solani is a soil- and seed-borne fungus belonging to class basidiomycete and capable of living free and as a saprophyte in the soil. It is divided into 14 anastomosis groups (AGs), which are incompatible with each other in terms of reproduction and proliferation. It has the potential to cause disease in various annual and perennial fruits, vegetables, and industrial and cereal crops. Plant diseases are mostly controlled by cultural methods; however, sometimes chemical control is also employed for this purpose. However, these control methods are mostly insufficient due to the soil-borne and saprophytic nature of the fungus. Therefore, researchers are working on other alternative methods. Biological control is one of the important ones among these methods. Antagonists used in biological control directly interact with R. solani through hyper-parasitism, antibiosis, or competition. Furthermore, antagonists trigger the defense reaction of host plants, which improves the control over the pathogens. The most important fungi species among these antagonists are; Trichoderma spp., Gliocladium spp., Verticillium biguttatum, and Stachybotrys elegans. The most important bacteria species used for the management of R. solani are; Fluoresent pseudomonas, Bacillus spp., Streptomyces spp., Pseudomonas fluorescens, and Erwinia spp. This review is focused on the biology, anastomosis groups, and biological control of R. solani. The antagonists used in biological control and studied mechanisms have been explained with examples. The review has been concluded with the latest developments in the literature.
Kazan Tepeleri (Ankara-Türkiye) Scarabaeidae (Coleoptera) Faunasına Katkılar
Authors: ERSOY Doğan Erhan , HASBENLİ Abdullah
Published: February 2022

Bu çalışma, Türkiye-Ankara ili Kazan ve Çubuk ilçeleri arasında bulunan, önemli doğa koruma alanı olan, Kazan tepelerinin Scarabaeidae faunasının belirlenmesini amaçlamıştır. Altı farklı alanda, farklı zamanlarda kurulmuş çukur tuzaklarına yakalanan örnekler incelenmiştir. Tuzaklardan 4 altfamilyaya ait 50 tür ve alt tür seviyesinde takson tespit edilmiştir. Belirlenen tür ve alt türlerin Türkiye dağılışları verilmiştir. Çalışma sonucunda bu tür ile birlikte 22 tür ve alt tür Ankara ilinden ilk kez kaydedilmiştir.
Détermination des paramètres d’évaluation du stock de carbone dans les écosystèmes forestiers (Cedrus atlantica Manetti, cèdre de l’Atlas au Maroc) : méthodes spécifiques et génériques
Authors: EL MDERSSA Mohamed
Published: February 2022

La quantification du carbone emmagasiné dans les écosystèmes forestiers et de son équivalent en CO2 constitue un impératif pour une estimation fiable de la contribution de ce puits de carbone dans la limitation des émissions de gaz à effet de Serre.  La présente étude vise dans un premier temps, par une étude de terrain, à évaluer le volume de bois sur pied et à estimer la quantité de carbone contenue dans les parties aériennes et racinaires, tout en déterminant le facteur d’expansion et de conversion de la biomasse (FECB) spécifique du cèdre de l’Atlas (Cedrus atlantica Manetti) situé dans la zone du Moyen Atlas central. D’autre part, les résultats obtenus ont été comparés à ceux provenant de l’utilisation des paramètres génériques du Groupe d’experts Intergouvernemental sur l’évolution du climat (GIEC) en 2006. Le volume de bois sur pied et la biomasse aérienne ont été déterminés en utilisant des tarifs de cubage et des modèles de biomasse développés à partir des mesures directes du poids sec et du volume sur 30 arbres échantillonnés et prélevés dans chaque forêt de la zone d’étude. Le volume et la biomasse aérienne ont été évalués respectivement à 3 321 284 m3 et à 1 521 153 t de matière sèche. Le FECB, déterminé par le rapport entre le volume et la biomasse, est de 0,36 tMS/m3, valeur inférieure à celle estimée par le GIEC (0,55 tMS/m3). La fraction de carbone (FC), issue de la calcination des échantillons de bois prélevés, est de l’ordre de 0,5643 tC/tMS. Elle est supérieure à la valeur donnée par le GIEC (0,51 tC/tMS). Au final, la quantité de carbone contenue dans l’écosystème étudié est de 858 387 t de matière sèche contre 931 620 t estimées à partir des paramètres du GIEC.
Casuarina species in Algeria: reviewing their identity, distribution and symbiotic status
Authors: BELAID Kathia , POTGIETER Luke J. , AMRANI Said , ZIZI Madjid , GHERBI Hassen
Published: February 2022

Since their introduction at the beginning of the 19th century, Casuarina species have become important components of the Algerian landscape, yet the numbers of species present in Algeria and their identity, distribution, and symbiotic status are still not well understood. A survey conducted on 2,304 trees in 96 Casuarina stands across Algeria indicates that they are represented exclusively by five species: Casuarina cristata Miq., C. cunninghamiana Miq., C. equisetifolia L., C. glauca Sieber ex Spreng. and C. junghuhniana Miq. Two species, C. cunninghamiana and C. glauca, were the most common – the former occurring more often in the relatively humid and temperate areas of the country while the latter is most frequent in the drier and warmer areas. Production of seedlings of C. cunninghamiana and C. glauca in 12 nurseries resulted in low rates of spontaneous mycorrhizal infection frequency and nodulation, suggesting that inoculation of seedlings with selected mycorrhizal fungi and/or Frankia strains in the nursery would be necessary to improve their establishment in the field. This study is the first survey of the geographical distribution of Casuarina species in Algeria and should lead to more efficient utilization of this widely used tree genus in Algeria.
Dynamics of Pinus wood prices for different timber assortments: comparison of stochastic processes
Authors: MUNIS Rafaele Almeida , MARTINS Jorge Carvalho , CAMARGO Diego Aparecido , SIMÕES Danilo
Published: February 2022

Understanding the dynamics of market prices for Pinus wood is a prerequisite for strategic decisions concerning forest investment plans since, in terms of the market, the exogenous risk to a project depends on timber assortments. The stochastic process that represents the best way of pricing the underlying asset therefore needs to be known. This study set out to compare Fractional Brownian Motion and Geometric Brownian Motion, through econometric tests, to understand the stochastic model that best represents the price behaviour of Pinus wood from planted forests in the state of Santa Catarina, Brazil, for the pricing of the underlying asset and valuation of the real options intrinsic to forest investment projects. The time series of prices, for the period from June 2017 to July 2019, relate to three assortments of Pinus wood used for multiple products. The recommended econometric tests to analyse the time series were for normality of the data, trend, autocorrelation, stationarity and fractional differential estimation. The time series were then modelled by means of stochastic processes in line with the econometric tests. The time series showed normal behaviour and indicated the presence of a positive trend and non-stationarity in the data. In addition, a true long memory was found in all series. Fractional Brownian Motion proved to be the most suitable stochastic process for modelling the prices of three forest timber assortments, given the non-stationary characteristics and true long memory of the time series for Pinus wood prices.
Effects of soil biotic and abiotic properties on the growth and mycorrhization of Cedrus atlantica Manetti cedars
Authors: EL AMRANI Belkacem
Published: February 2022

Cedrus atlantica Manetti is an emblematic species of great ecological, economic and social value. However, its weak root architecture seriously compromises (re)afforestation and regeneration of the species. Although it is known that mycorrhization is beneficial to cedars growing in unfavourable conditions, our knowledge on the mycorrhization of cedar seedlings is remains patchy. These difficulties show a need to study the interactions between the roots and the soil biotic and abiotic factors and to seek solutions to promote the mycorrhization of cedar seedlings. For this purpose, we studied the responses of cedar seedlings to the physico-chemical, textural, hydromechanical and microbiological factors of the soil and mycorrhization success in juvenile cedars. The response of C. atlantica seedlings to the textural and physico-chemical properties of soils in cedar woods shows that they are highly dependent on organic carbon, nitrogen and phosphorus contents and on the soil's granulometry. These factors stimulate the growth of secondary roots in some soils while in others, they cause seedling growth to predominate. The provenances of C. atlantica show a high nitrogen requirement and different preferences for nitrogen forms. Variations in the cotyledons also reveal different patterns of adaptation to nitrogen nutrition. The hydromechanical properties of the culture medium profoundly affect C. atlantica seedlings, so that in extreme cases, they either over-stimulate the elongation of unbranched main roots or completely inhibit their elongation, producing a great many reduced lateral roots. On the anatomical scale, these responses are more apparent around the cortex. Interactions with the native soil microflora have a determining effect on the growth of C. atlantica seedlings, since the microbial composition of the soil can stimulate growth and decrease the density of roots. The nutrient depletion of 6 soils   allowed the trapping of 15 species of ectomycorrhizal fungi of young C. atlantica seedlings. This indicates the crucial importance of this new range of mycorrhizal fungi, characterized for the first time in C. atlantica seedlings, especially for work aiming to improve the health status of cedar seedlings.
Importance des cultes dans la préservation des espèces d’arbre, le cas du samba (Triplochiton scleroxylon K. Schum.) au Bénin
Authors: GANKA Gabin , SALAKO Valère Kolawolé , FANDOHAN Belarmain Adandé
Published: February 2022

Triplochiton scleroxylon K. Schum. est l’une des espèces vénérées des écosystèmes sacrés du Bénin qui revêt une importance socioculturelle. Toutefois, les peuplements naturels de l’espèce sont en déclin et les informations sur ses usages sont quasi non documentées. Cette étude évalue les connaissances locales sur les usages de l’espèce et la distribution desdites connaissances entre groupes ethnolinguistiques, culturels et cultuels au Bénin. Des enquêtes ethnobotaniques individuelles ont été réalisées auprès de 411 adeptes des divinités liées à la conservation de l’espèce au Bénin. Les indices ethnobotaniques tels que la fréquence relative de citation (FRC), la valeur d’usages (VU) total et par organe, et l’indice d’importance culturelle (IC) ont été utilisés pour quantifier la popularité, l’utilisation et l’importance socioculturelle de T. scleroxylon, respectivement. Un modèle linéaire généralisé avec la distribution de la binomiale négative a été réalisé pour examiner la variation de la VU entre groupes ethnolinguistiques, culturels et cultuels. Au total, 36 usages spécifiques catégorisés en neuf types d’usages ont été rapportés. Les usages cultuels, médicinaux, artisanaux et comme bois d’œuvre sont les plus cités. Toutes les parties de la plante sont prisées dans la tradition du culte Oro. Les feuilles, racines et écorces sont les organes utilisés pour traiter diverses affections dont les plus populaires sont les affections digestives et gynécologiques. Les connaissances et les usages de l’espèce varient significativement entre les groupes ethnolinguistiques et cultuels. Une singularité des connaissances de T. scleroxylon a été observée chez les adeptes du culte Oro. La disparition de cette espèce pourrait avoir des conséquences majeures sur l’identité et la stabilité culturelle et cultuelle des peuples pratiquant cette tradition. Les usages médicinaux populaires rapportés offrent aussi des perspectives pour la valorisation médicinale de l’espèce.
Readmissions to a Pediatric Ward: An Eleven-Year Experience in a Portuguese Hospital
Authors: Sousa Martins Joana , Sousa Rita , Matias Joana , Calhau Paulo
Published: February 2022

Introduction: Pediatric readmissions have received increased attention in the past few years. Distinguishing between planned and unplanned readmissions and between preventable and unpreventable ones constitutes an important target to better understand this thematic. The aim of this study was to analyze the readmission rate and characterize the population readmitted within a 30-day period after discharge in the pediatric ward of a level II hospital.Material and Methods: Observational retrospective single center study of the pediatric patients who were discharged from a level II hospital, between 2009 and 2019, and had at least one readmission within 30 days after discharge. Clinical and demographic data were obtained from the analysis of the patient’s medical records. We considered as potentially preventable all the unplanned readmissions that were related with the index admission.Results: From the 6879 admissions during the study period, 4.8% resulted in readmissions within the next 30 days. Excluding the planned readmissions, the seven, 15 and 30-day readmission rates were respectively 1.7%, 2.7% and 3.9%. Most of the unplanned readmissions (77%) were considered as potentially preventable. Patients reevaluated in the Pediatric Day Hospital after discharge had shorter intervals to readmission. Readmissions due to decompensation of chronic disease were more likely related with the index admission. Patients with chronic disease, as well as patients with neurological impairment were more likely to have multiple readmissions.Conclusion: We found a low overall readmission rate, but a higher percentage of potentially preventable readmissions, when compared with the available literature.
Perancangan Rekonfigurasi Link Transmisi Microwave Long Haul IV Nagari – Kamang Baru dengan Space Diversity Menggunakan Pathloss 5.0
Authors: Alfiyani Wiwi
Published: February 2022

Cellular communication is a very important requirement so need to improve the performance of the telecommunications system, especially in area with obstacles such as IV Nagari - Kamang Baru which have extensive hills from the northwest to the southeast, so the microwave link becomes not Line of Sight. To overcome this problem to do adding a passive repeater back to back. it is placed on a link with the highest elevation site. However, because it works on microwave long haul. Optimization becomes ineffective because passive repeaters back to back are inefficient and used only on short paths so need to reconfiguration link with a space diversity. While space diversity is not effective in the mountains area with a hight terrain rougness. Design of microwave link use passive repeater back to back with a hight terrain rougness and microwave long haul, receive signal level of -71.74 dB, fading margin of 24.26 dB and availability of 99.97712%. However, the availability not yet reached by ITU G.827 and F.1703 standards. Then the microwave link reconfiguration with a space diversity to improve availability, results the space standard by 180λ receive a signal level of -71.39 dBm, fading margin of 24.61 dB and availability of 99.9929% according to the target by ITU G.827 and F.1703 standards. Microwave links with very high integrity and outage time of 8.6 seconds perday.
Analisis Performansi Jaringan OSPF Menggunakan Metode Translasi NAT-PT
Authors: Nugroho Kukuh
Published: February 2022

Pertumbuhan pengguna Internet semakin lama bertambah banyak. Pengalokasian alamat IP versi 4 (IPv4) sudah tidak mampu lagi menampung pertumbuhan pengguna Internet tersebut. Setiap user yang ingin menggunakan Internet harus terhubung ke jaringan dengan menggunakan alamat IP public. Untuk memenuhi kebutuhan alamat IP tersebut dibutuhkan IPv6 karena IPv6 menggunakan jumlah bit yang lebih banyak yaitu 128-bit. Antar perangkat yang menggunakan IPv4 dan IPv6 tidak dapat langsung dihubungkan. Oleh karena itu dibutuhkan metode translasi. Pada penelitian ini akan diteliti performansi jaringan dimana metode translasi yang digunakan adalah NAT-PT (Network Address Translation – Protocol Translation) menggunakan routing protocol OSPF (Open Short Path Firts). Penelitian ini  menggunakan parameter performansi jaringan diantaranya adalah throughput , delay,  dan packet loss. Berdasarkan hasil penelitian, rata – rata throughput pada file sharing sebesar 6,243 Mbps dan pada video streaming sebesar 0,279 Mbps.  Sedangkan rata – rata delay pada file sharing sebesar  1,033 ms dan pada video streaming sebesar  2,382 ms. Kemudian rata-rata packet loss video streaming sebesar 0,0000225 %.
Sistem Penilaian Ujian Praktik SIM C Berbasis Nirkabel Menggunakan Protokol MQTT
Authors: Triwidyastuti Yosefine , Setiawan Rizki Haris , Harianto Harianto
Published: February 2022

Surat Ijin Mengemudi (SIM C) adalah salah satu tanda atau bukti yang diberikan pihak kepolisian bahwa seseorang telah layak untuk mengendarai sebuah kendaraan roda dua. Pada penelitian ini penulis ingin membuat sistem penilaian ujian praktik SIM C menggunakan mikrokontroller. Peneliti mengembangkan penelitian sebelumnya yang pengiriman datanya menggunakan kabel serial menjadi pengiriman data menggunakan wireless. MQTT adalah salah satu metode pengiriman data berbasis wireless, yang menggunakan server dan klien. Dalam penelitian ini digunakan sensor getar SW-420 sebagai pendeteksi untuk setiap patok dan sensor HC-SR04 sebagai penghitung kecepatan rata-rata kendaraan. Dalam penelitian ini, ujian praktik SIM C menggunakan tiga buah lintasan yaitu keseimbangan, zig-zag dan putar balik. Dari hasil pengujian, sensor getar dapat mengirimkan data ke aplikasi ketika patok tersenggol oleh kendaraan. Sensor ultrasonik juga dapat merekam kecepatan kendaraan saat peserta melewati garis start dan menampilkan nilainya di aplikasi. Selain itu, aplikasi dapat menampilkan hasil akhir dari tiga ujian yang sudah dilakukan sebelumnya dan disimpan sementara.
Criteria to analyse the didactic communication strategies
Authors: Menshikov P. V. , Arpentieva M. R.
Published: February 2022

A key factor of the educational process success is psychological competently built didactic communication between a student and teacher. The problem is only the lack of both methodological unity in the general, theoretical analysis of the phenomenon of didactic communication itself, and the patchwork of practices aimed to optimize the didactic communication real process. The study objective is to analyse the didactic communication criteria between a teacher and student, their understanding as the basis for selection and comparative analysis of different strategies of the teacher and student didactic communication. The paper carries out a meaningful analysis of the teacher-student didactic communication criteria: educational interaction key constructs, its different sides and aspects in the ideas of the teacher; communication space and time modes, «the learning effect concepts», the image of a student in teacher ideas, typical communication means; a didactic communication organizational form reproduced by a teacher; the teacher communicative self-identification and research tools, the didactic communication correction. As study results, the authors conclude that at an infinite variety of individual-personal shades of didactic communication, in general, it seems possible to single out historically changing common, covering most of the teaching community, systems of ideas on the optimal strategy of educational interaction with students.
Motivative aspects of studying mathematics by students of «humanitarian» specialties
Authors: Filatov V. V. , Gobysh A. V. , Verichev S. N.
Published: February 2022

Mathematical models, which are means to reflect almost all processes and phenomena, penetrate intensively into all life spheres and play an important role in both natural science, engineering research and humanities. In this regard, new requirements are being put forward for training future specialists of various qualifications, to form professional competencies of which it’s necessary to master mathematics foundations. The article substantiates the importance to form mathematical competence of students of humanitarian specialties. Under the humanitarian specialties here, we mean specialties related to business, such as «Trade», «Management», «Marketing», «Advertising and public relations», etc. At the same time, the authors note that each specialty has a component reflecting and modeling real situations in the industry, which is quite interesting and accessible to junior students of the listed specialties and can be demonstrated even in the math basic course. The article emphasize that the topic relevance is dictated by the transition to a competency-based learning model, which, among other things, implies the development of independent learning skills among university students. The paper shows that the introduction of professional orientation in teaching mathematical disciplines is complicated by the lack of appropriate technologies and standards, as well as by a drop in the level of school mathematics training. It analyzes some aspects of this issue and emphasizes that motivational aspects should be put at the forefront while developing mathematics courses for students of humanitarian specialties of the university. The authors conclude that the competent mathematics course elaboration for students studying in the humanities will help to understand the importance of mathematical foundations for their further growth, awaken their desire to analyze, highlight the main thing, reason, see many ways to solve professional problems.
Addictive behaviour and coping strategies of students – future specialists of helping professions
Authors: Churikova E. N. , Barsukov A. V.
Published: February 2022

The article deals with the problem of manifesting addictive behaviour by students of helping professions. It carries out the analysis of modern views and psychological knowledge on various aspects of addictive behaviour. The authors present results of an empirical study of the features of addictive behaviour of helping profession students. They analyze results of the relationship between the propensity to addictive behaviour and coping strategies in students of helping professions.
Problems of managing the university human capital at the educational environment digitalization context
Authors: Gaag A. V. , Butova O. V. , Ryabova N. N.
Published: February 2022

The article discusses modern approaches to the «human capital» category definition, trends in developing human capital and its management system in higher education institutions of the Russian Federation. The paper determines that the problem of the educational environment is a current direction of modern pedagogical research. The authors study issues of qualitative changes at the university educational environment under conditions of dominating a new technological order in socio-economic processes, the digital economy development. The educational environment of Tomsk Agricultural Institute – Novosibirsk State Agrarian University branch is structured based on the analysis of psychological, pedagogical and economic literature, regulatory and legal support of the educational process, as well as the university general management system, the human capital of its teaching staff, and the analysis of the capital itself in particular. The article outlines the problematic field of managing the teaching staff human capital under conditions of the educational environment digitalization of the educational organization under study determining its actual tasks based on observation results of the human capital management process at the university, questionnaires and interviews of its teaching staff, calculation and analysis of estimated indicators of human capital. The most problematic areas of management activity of Tomsk Agricultural Institute under conditions of growing the informatization and digitalization processes are the following: human capital management in the field of educational, methodological and research work of university teachers. The authors conclude on the need to improve the human capital management system of the educational organization under study. They propose to implement the mid-term project «The teaching staff motivation of Tomsk Agricultural Institute – Novosibirsk State Agrarian University branch to work effectively under conditions of digitalization of the educational environment». It will allow raising the mechanism effectiveness of interacting the university administration and employees belonging to the teaching staff at the Institute e-learning field through forming a system of employee tangible and intangible incentives.
Описание блока расчета поля солнечного излучения в модели общей циркуляции нижней и средней атмосферы Земли
Authors: Четверушкин Борис Николаевич , Chetverushkin Boris Nikolaevich , Мингалев Игорь Викторович , Mingalev Igor' Viktorovich , Чечеткин Валерий Михайлович , Chechetkin Valerii Mikhailovich , Орлов Константин Геннадьевич , Orlov Konstantin Gennad'evich , Федотова Екатерина Алфеевна , Fedotova Ekaterina Alfeevna , Мингалев Виктор Степанович , Mingalev Viktor Stepanovich
Published: February 2022

Изложено описание методов расчета поля солнечного излучения в радиационном
блоке модели общей циркуляции нижней и средней атмосферы Земли. В этих расчетах используется новая параметризация молекулярного поглощения в диапазоне
частот от 2000 до 50000 см$^{-1}$
в интервале высот от поверхности Земли до 100 км.
При построении параметризации учитывается изменение газового состава атмосферы с высотой, а также учитывается нарушение локального термодинамического
равновесия в колебательных полосах углекислого газа с длиной волны около 4.3 и
2.7 мкм на высотах выше 70 км. Для численного решения уравнения переноса излучения используется метод дискретных ординат. Результаты расчетов, выполненных с помощью радиационного блока модели, сравниваются с результатами эталонных расчетов поля солнечного излучения в нижней и средней атмосфере Земли,
выполненных с очень высоким разрешением по частоте. Показано, что блок модели обеспечивает хорошую точность расчетов как при отсутствии облаков, так и
при наличии облачных слоев с большой оптической толщиной.
О восстановлении функциональных коэффициентов в модели динамики квазистабильной популяции
Authors: Щеглов Алексей Юрьевич , Shcheglov Aleksei Yur'evich , Нетесов Святослав Викторович , Netesov Svyatoslav Viktorovich
Published: February 2022

Для модели популяционной динамики с возрастным структурированием в квазистабильном варианте рассматривается обратная задача восстановления двух коэффициентов модели: зависящей только от времени и равномерной по возрасту клеток интенсивности смертности клеток, входящей в уравнение переноса, и плотности репродуктивности клеток, зависящей только от их возраста, располагающейся
в нелокальном граничном условии интегрального вида. Для определения в рамках
постановки обратной задачи двух искомых коэффициентов модели требуется дополнительное задание решения прямой задачи при фиксированных значениях одного из его аргументов. Формулируются и доказываются теоремы единственности
решений обратных задач определения коэффициентов в уравнении и в граничном
условии. При этом предварительно устанавливаются свойства решения прямой задачи и условия еe разрешимости. Получаемые при анализе постановок прямой и
обратных задач интегральные формулы позволяют организовать для численных решений прямой задачи и обратных задач итерационные алгоритмы различного вида
для получения приближeнных решений задач. Возможности использования такого
итерационного численного решения коэффициентных обратных задач должны
быть увязаны с некорректным характером обратных постановок.
О моделировании источников радиационно-индуцированных эффектов в гетерогенных материалах
Authors: Соболева В А , Soboleva V A , Жуковский Михаил Евгеньевич , Zhukovskii Mikhail Evgen'evich
Published: February 2022

Рассматривается подход к расчету исходных данных для компьютерного моделирования радиационно-индуцированных вторичных эффектов в гетерогенной среде.
Предложен способ решения проблемы интеграции «по данным» результатов моделирования каскадных процессов переноса излучения и процессов генерации вторичных радиационно-индуцированных эффектов. Способ основан на многомерной
аппроксимации результатов статистического моделирования взаимодействия излучения с веществом на разностную сетку, предназначенную для численного решения уравнений электро- и термодинамики. Аппроксимация строится с применением технологии нейронных сетей. Геометрическая модель гетерогенной среды строится на основе алгоритмов Штилингера-Любачевского для многомодальных структур. Приведены результаты демонстрационных расчетов.
Characteristics of and treatment for respiratory mycoplasmosis in children during the epidemic season 2020–2021
Authors:   Central Research Institute of Epidemiology of The Federal Service on Customers' Rights Protection and Human Well-being Surveillance, Moscow, Russian Federation, Kremplevskaya S.P. ,   Khimki Regional Hospital, Khimki, Russian Federation, Muzyka A.D. ,   Central Research Institute of Epidemiology of The Federal Service on Customers' Rights Protection and Human Well-being Surveillance, Moscow, Russian Federation, Soldatova E.Yu. ,   Central Research Institute of Epidemiology of The Federal Service on Customers' Rights Protection and Human Well-being Surveillance, Moscow, Russian Federation, Pogorelova O.O. ,   Central Research Institute of Epidemiology of The Federal Service on Customers' Rights Protection and Human Well-being Surveillance, Moscow, Russian Federation, Barykin V.I. ,   Khimki Regional Hospital, Khimki, Russian Federation, Mirzonov V.А. ,   Khimki Regional Hospital, Khimki, Russian Federation, Melekhina Е.V. ,   Central Research Institute of Epidemiology of The Federal Service on Customers' Rights Protection and Human Well-being Surveillance, Moscow, Russian Federation
Published: February 2022

According to some authors, infection caused by M. pneumoniae is one of the most common in the current epidemic season of 2020–2021 worldwide. This fact is particularly important now because of the need for differential diagnosis between mild COVID-19 and respiratory infection caused by M. pneumoniae, as well as for timely administration of causal therapy. Materials and methods. In this study, we analyzed the frequency of pneumonia caused by M. pneumoniae detected among children admitted to the Pediatric Department for Infectious Diseases of Khimki Hospital over the last 5 years. Results. We observed an increase in the proportion of patients hospitalized with community-acquired pneumonia, primarily between October 2017 and April 2018, as well as in the spring of 2020. In 31% to 67% of children treated in 2020–2021 (depending on the month and season), community-acquired pneumonia was caused by M. pneumoniae. We also analyzed clinical characteristics of community-acquired pneumonia caused by M. pneumoniae and other pathogens. In addition to that, we report a case of mixed infection (M. pneumoniae plus Epstein-Barr virus) and provide a rationale for administration of meglumine acridone acetate (Cycloferon) as a part of comprehensive treatment for this pathology. Key words: community-acquired pneumonia, children, infection caused by Mycoplasma pneumoniae, meglumine acridone acetate
Outpatient management of children with bronchopulmonary dysplasia: what is important to know for a neonatologist and a pediatrician?
Authors:   Peoples' Friendship University of Russia (RUDN), Moscow, Russian Federation, Ovsyannikov D.Yu. , Zhestkova M.A. ,   Peoples' Friendship University of Russia (RUDN), Moscow, Russian Federation
Published: February 2022

This article contains the most up-to-date information about bronchopulmonary dysplasia (BPD), which is the most common chronic lung disease in infants and a serious complication of prematurity and respiratory therapy in the neonatal period. This summary will be particularly valuable for pediatricians. We provided the information about epidemiology, etiopathogenesis, pathomorphology, clinical manifestations, diagnosis, diagnostic algorithm, classification and diagnostic criteria for BPD. We also covered the principles of outpatient management, including approaches to oxygen therapy, diet therapy, immunoprophylaxis of respiratory syncytial viral infection, personalized drug therapy for BPD and its complications, in particular pulmonary hypertension. We listed possible BPD complications (such as acute bronchiolitis, obliterating bronchiolitis, bronchial asthma, chronic obstructive pulmonary disease) and their prevention. Key words: outpatient management, bronchopulmonary dysplasia, diagnosis, immunoprophylaxis of respiratory syncytial virus infection, therapy
Stress urinary incontinence in young female gymnasts and dancers as functional disorder associated with overuse injury (pilot study)
Authors:   Central State Medical Academy, Administration Department of the President of the Russian Federation, Moscow, Russian Federation, Vasilyev O.S. ,   Russian State University of Physical Education, Sport, Youth, and Tourism, Moscow, Russian Federation, Levushkin S.P. ,   Russian State University of Physical Education, Sport, Youth, and Tourism, Moscow, Russian Federation,   Institute of Developmental Physiology, Moscow, Russian Federation, Achkasov E.E. ,   I.M.Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation, Rokhlin A.V. ,   Russian State University of Physical Education, Sport, Youth, and Tourism, Moscow, Russian Federation
Published: February 2022

Stress urinary incontinence (SUI) is common among young, nearly healthy female athletes and ballet dancers (up to 80 and 50%, respectively). Patients and methods. A pilot study included 46 adolescent girls aged 10 to 14 years (rhythmic gymnastics and choreography students); SUI was identified in 14 subjects. Using analysis of variance (ANOVA), it was revealed that inspite of the small sample, pelvic and hip muscle hypertension (p = 0.005) and lumbar hyperlordosis (p = 0.028) could be considered as risk factors for the SUI development . Discomfort and/or uncertain pain in pelvis and hip joints that increased during specific movements were considered as “non-specific pain syndrome; overuse injury” in all subjects. Results. After a standard rehabilitation therapy used in such cases, all the 14 SUI patients noted a decrease in urinary leak episodes (p = 0.033). Conclusion. The results suggest that a larger randomized controlled trial of risk factors, treatment and rehabilitation of SUIsyndrome in young female athletes and dancers should be carry out. Keywords: ballet, hypertension, urinary incontinence, rehabilitation, female athletes
Role of biofilms in the development and persistence of ENT infections and ways to disrupt biofilms
Authors:   N.I.Pirogov Russian National Research Medical University, Moscow, Russian Federation, Radtsig E.Yu. , Konstantinov D.I. ,   N.I.Pirogov Russian National Research Medical University, Moscow, Russian Federation
Published: February 2022

The improvement of treatment efficacy for any disorder, including infectious diseases, is one of the most important tasks for current medicine. One of possible ways to achieve it is to find some therapeutic agents that can affect microbial biofilms, since they have been shown to play an important role in the development of 80% of diseases, including chronic ones. So far, there have been no optimal methods of destroying biofilms. In this article, we discuss non-antibiotic treatments with antibiofilm activity in the upper respiratory tract mucosa. Essential oils (EOs) and their complexes are a promising treatment for patients with infectious diseases. They have been used in dental and gynecological practice, treatment of infections of the urinary and upper respiratory tracts (rhinitis, sinusitis, nasopharyngitis) and demonstrated their effectiveness. The antibacterial activity of EOs from plants depends on the complexity of the composition of a specific EO complex and the type of microorganism. We provide the evidence of the efficacy of the EO complex "Maslo Dyshi" (Akvion, Russia), whose antibiofilm activity was demonstrated by Russian scientists on the model with mycobacterial (MBT) biofilms and compared with EOs used alone (eucalyptus, pine, bergamot). The authors proved complete suppression of various biofilm states in all studied MBT strains exposed to vapors of the EO complex "Maslo Dyshi" (high antibacterial and antibiofilm activity), probably associated with the synergistic effect of EOs included in the complex. The bactericidal activity of a similar EO composition was evaluated in a German study, which demonstrated that mint and cajuput oils had the highest activity. This study also ranked activity of all EOs included in a complex similar in its composition to "Maslo Dyshi" and emphasized its association with the exposure time and concentration, since EOs evaporate over time. We discuss the results of studies that demonstrated virucidal activity of "Maslo Dyshi" against influenza virus, rhinovirus, adenovirus, and respiratory syncytial, as well as its clinical activity. All authors reported decreased frequency and duration/number of complications of viral infections, including that in children with frequent respiratory infections. New data on the antibiofilm activity of this EO complex opens new horizons for its use in outpatient clinical practice. Key words: biofilm, children with frequent respiratory infections, acute respiratory infections
Prediction of reactive arthritis in children with connective tissue dysplasia
Authors:   Institute for Cellular and Intracellular Symbiosis, Ural Branch of RAS, Orenburg, Russian Federation, Chelpachenko O.E. , Fisenko A.P. ,   National Medical Research Center for Children's Health, Moscow, Russian Federation, Danilova E.I. ,   National Medical Research Center for Children's Health, Moscow, Russian Federation, Nikiforov I.A. ,   Institute for Cellular and Intracellular Symbiosis, Ural Branch of RAS, Orenburg, Russian Federation, Perunova N.B. ,   Institute for Cellular and Intracellular Symbiosis, Ural Branch of RAS, Orenburg, Russian Federation, Ivanova E.V. ,   Institute for Cellular and Intracellular Symbiosis, Ural Branch of RAS, Orenburg, Russian Federation,   Orenburg State Medical University, Orenburg, Russian Federation, Chaynikova I.N. ,   Institute for Cellular and Intracellular Symbiosis, Ural Branch of RAS, Orenburg, Russian Federation,   Orenburg State Medical University, Orenburg, Russian Federation
Published: February 2022

Objective. To develop a model for automated prediction of the development of recurring reactive arthritis in children with symptoms of connective tissue dysplasia (CTD). Patients and methods. The work included two stages. At the first stage, in order to identify the predisposing factors to the development of reactive arthritis (ReA), two age- and sex-representative groups of children aged 3-17 years were formed: group 1 consisted of children with ReA (50 patients), group 2 – comparison group (25 conditionally healthy children from the general population). All children underwent a standard clinical examination with determination of CTD symptoms, and microbiological examination, including evaluation of the state of microbiocenosis of the distal colon by degrees; the ability of isolated microorganisms to biofilm formation (BF); levels of lactoferrin (LF) and lysozyme (LZC) in coprofiltrates of children. At the second stage, to create an automated prediction model, two additional groups of children were formed: 30 conditionally healthy children with CTD symptoms without arthritis and 30 conditionally healthy children without CTD symptoms. Stepwise discriminant analysis (DA) and the method of resultants mapping were used. Results. The factors determining the risk of ReA development in children with connective tissue dysplasia were identified. Highly informative markers associated with the development and course of ReA were established: the presence of external phenotypic symptoms and dysplasia of internal organs; dysbiotic disorders of the distal large intestine; high rates of microbial contamination and BF of intestinal microsymbionts; increased levels of LF and LZC in coprofiltrates of children. Conclusion. The diagnostic algorithm for automated prediction of the development of arthritis recurrence was developed, which allows primary care physicians to solve the problem of secondary prevention of ReA. Key words: reactive arthritis, children, connective tissue dysplasia, intestinal microbiota, prediction method