bluuebunny/crossref_metadata_2025 huggingface dataset:
JENIS-JENIS SEMUT ARBOREAL (HYMENOPTERA: FORMICIDAE) DI KAWASAN KAMPUS UNIVERSITAS TANJUNGPURA DENGAN TIGA METODE KOLEKSI
Authors: Indrianasari Melvy , Kustiati Kustiati , Saputra Firman
Published: December 2020

Ants as insects occupy various habitats and ecological niches. Universitas Tanjungpura is an area with variable vegetation physiognomies that has the potential to have a lot of ant microhabitat. This study aims to determine the most effective method for collecting arboreal ants (Hymenoptera: Formicidae) found in the campus area of Universitas Tanjungpura. The study was conducted from August 2018 to February 2019 at ten locations  based on their environmental condition. Ants were collected in three different methods: hand collecting, bait traps, and yellow pan traps. There were 39 species of Formicidae collectedfromall locations. These results were obtained by hand collecting (32 species), bait traps (32 species), and yellow pan traps (4 species). Hand collecting and bait traps are the most effective method for collecting arboreal ants in Universitas Tanjungpura.
Strategic partnerships as a modern form of business integration in industry
Authors: Androsova I. V. , Sogacheva O. V.
Published: December 2020

The article considers the role of strategic partnerships in the practice of integration interactions of industrial enterprises in the modern economic environment. The authors highlight the distinctive features of strategic partnerships from other forms of business integration. The paper ascertains that for industrial enterprises, strategic partnerships based on the mechanism of subcontracting are most applicable. The study develops a model of strategic partnership based on subcontracting. The article gives practical examples of creating strategic partnerships. The paper analyses the level of development of strategic partnerships in industry, as well as studies the infrastructure that provides this process. The authors focus on the problems that hinder the activation of the processes of creating strategic partnerships based on subcontracting in the regions. Based on the results of the article, the authors offer recommendations aimed at the successful implementation of the creation of strategic business partnerships in industry.
Multipurpose assessment of the financial competitiveness of a publishing company
Authors: Aliev A. A. , Gordienko M. S. , Petelina A. V.
Published: December 2020

The paper considers a set of theoretical, practical and methodological issues related to determining the level of competitiveness of publishing companies by forming an integral assessment. The methodology of the study is the application of the ranking system, the Fishburne method, the definition of the specific weights of indicators, allowing you to assess financial competitiveness of companies, the tools of graphic analysis to calculate the overall integrated indicators that characterize the level of competitiveness of the publishing company. The main findings of the study are to determine the level of competitive potential (LCP) of companies, through integral evaluation. The advantage of the assessment method used is the application of a system of financial, marketing and reputational indicators. This indicator system has made it possible to more accurately determine the level of financial competitiveness and improve the effectiveness of financial and investment decisions made in the publishing industry.
Specifics of perception of images of professions in advertising and public relations
Authors: Arzhanova K. A. , Dovzhik G. V.
Published: December 2020

The article сonsiders the peculiarities of perception of public relations and advertising specialists ‘ images by future representatives of these professions. The paper presents the results of a study to identify the Delta perception of images of specialties from students in the field of “Public Relations and Advertising”. For the cumulative assessment of image perception, the method of private semantic differential was applied, using the original scale of perception of the above-mentioned professions developed by the authors. As a result of the research, the distribution profiles of the average values of independent variables were analysed and the specifics of the perception of specialties was revealed. The obtained data can be used to correct these images, as well as formulate recommendations for their improvement.
Relationship of individual psychological peculiarities of convicts with a tendency to auto-aggressive behavior
Authors: Sergeeva M. A. , Fursi L. F. , Kubekova A. S.
Published: December 2020

The article reflects the results of a study of the relationship between the individual psychological characteristics of convicts with a tendency to auto-aggressive behavior. The authors carry out a psychodiagnostic examination using 4 methods: a suicidal risk questionnaire T.N. Razuvaeva; mini-cartoon (abridged version of MMPI, Russian adaptation by V.P. Zaitsev and V.N. Kozyulya); questionnaire «Anxiety and depression» (K.K. Yakhin, D.M. Mendelevich); color test M. Luscher. The paper ascertains that the personality of convicts prone to auto-aggressive behavior is indeed characterized by certain individual psychological characteristics. These individual psychological characteristics can be divided into two groups: one group of individual psychological characteristics (demonstrativeness, social pessimism, maximalism, uniqueness, breaking cultural barriers) is associated with a tendency to an extreme form of manifestation of auto-aggressive behavior, that is, to suicide, and the other group of individual psychological characteristics (black color, depression, psychasthenia and schizoid) are characteristic of convicts who are prone to manifesting auto-aggressive behavior in the form of self-harm. On the basis of the study, recommendations were developed for the prevention and correction of convicts prone to auto-aggressive behavior
Сreating a mechanism for broadcasting corporate culture norms and internal PR in order to increase employee engagement
Authors: Suvalov O. S. , Suvalova T. V.
Published: December 2020

The aim of the study is to analyse the mechanism for increasing staff engagement through broadcasting corporate values and internal PR. The article substantiates the relevance of informing as a verbal means of positive content. The paper gives an approximate list of proclaimed and denied values. The authors consider corporate events with the aim of conveying the mission, values and ideology of the company to all employees. The study notes the role of regular informing for uniting employees into a single team, forming a sense of pride in the company for the staff. The article reviews the option of monitoring the level of awareness through a feedback questionnaire, notes the need for analysis of incoming data. The paper focuses attention on the formation of personnel identity and loyalty, the use of company symbols, the creation of corporate values and traditions.
Ontologization of mental representations for management purposes
Authors: Akopyan A. R. , Arakelyan A. M. , Krysov V. V.
Published: December 2020

The article considers the problems of ontologization of mental representations of a certain field of activity and the corresponding subject area for the purposes of management automation. For the first time, the authors raise the question about the need to include mental representations of the sphere of activity that the subject area reflects in the ontology of the subject area. Ontologization of mental representations is necessary to identify the participants' understanding of their actions, which will change approaches to management, and for deep training of artificial intelligence in order to transfer part of its management functions to it. On the basis of connectionist approaches to understanding thinking, the paper considers the processes of forming mental representations and changing their attributes. The article gives a new definition and typology of mental representations.
Quality management of the industrial enterprises workforce
Authors: Krasnopevtseva I. V. , Krasnopevtsev A. Yu.
Published: December 2020

The use of the latest production technologies by industrial enterprises requires availability of a high quality workforce that matches their level of complexity and uniqueness of the equipment and materials used. Therefore, for any enterprise a very urgent task is to manage the quality of the workforce, the solution of which will allow it to maintain an infallible balance between the level of development of material and personal factors of production. The article presents the results of the research of the dynamics of the labor force quality at a number of industrial enterprises having different types of production organization. The paper carries out the analysis of the revealed dynamics. The study proposes the author’s method for determining the need to improve the level of quality of labor force. The article shows the possibility of automatization of labor force quality assessment by means of a computer program developed by the authors. The paper makes a conclusion that the most effective method of labor force quality management is the organization of intra-company training, which allows you to form special knowledge and skills of workers, which are most in demand at this enterprise. The study offers methodical recommendations for building a system of intracompany labor quality improvement, determines its principal differences from the existing ones.
Competitiveness of the Russian space industry in the global space services market
Authors: Khodykin A. В.
Published: December 2020

The article carries out an analysis of the competitiveness of the Russian space industry in the international space services market according to the following indicators: the volume of budget of national space organizations, the volume of the commercial space exploration market, the number of space launches, positions in manned cosmonautics, production of spacecrafts, deep space exploration, staffing of the space industry and international integration in the space sphere. The paper conducts a SWOT-analysis of the Russian space industry. Its main strengths are: leading positions in manned cosmonautics, leading positions in the number of space launches per year, and extensive experience in space exploration. The greatest concern is caused by: the lack of development of space robotics, insufficient programs for the development of deep space, financial problems and the private sector of Russian cosmonautics, which is in its infancy. The author substantiates the necessity of reforming the Russian space industry.
Influence of tax, customs-tariff and macroeconomic factors on on the indicators of economic efficiency of oil-refining enterprises
Authors: Baykova O. V. , Gromyko E. O.
Published: December 2020

The article presents arguments substantiating the influence of tax factors on the indicators of economic efficiency of oil and gas enterprises. The paper gives an interpretation of the influence of tax, customs-tariff, and macroeconomic factors on the indicators of economic efficiency of oil refining enterprises. The authors consider and set the objectives of the influence of tax, customs-tariff and macroeconomic factors. The study provides statistics of the Ministry of Finance of the Russian Federation on the amounts of lost oil and gas revenues from the federal budget. The article considers the exchange rate as one of the key factors influencing the dynamics of macroeconomic indicators. The paper analyses the prices of “Urals” crude oil on the world oil industry markets. The authors discuss changes and modernization of the oil-refining industry.
Intermediate result of negative consequences of the epidemic of the new coronavirus infection for the global economy
Authors: Bakhturazova T. V. , Mayorov M. K. , Seleznev P. S. , Edelev D. A.
Published: December 2020

The epidemic of the new SARS-CoV-2 coronavirus infection slowed global economic growth and became the main threat for the global economy and financial markets in 2020. Authorities in many countries around the world have declared a health emergency. Without the experience of state quarantine, countries have faced negative consequences for citizens, the economy and financial market participants. The introduction of temporary regulatory easing in the context of the spread of a new coronavirus infection assisted to partially limit the negative consequences. The next few months will, probably, have a particularly strong impact on small business, as government support schemes are reduced or ceased. The article reveals the main consequences of the new coronavirus infection for the global economy.
Discovery of the Antibiotic Polyketide Tatiomicin via a Genomics Guided Analysis of Amycolatopsis sp. DEM30355
Authors: Kepplinger Bernhard , Cowell Joseph , Morton-Laing Stephanie , Wills Corinne , Marrs Emma , Perry John , Grey Joe , Goodfellow Michael , Errington Jeff , Probert Michael , Clegg Bill , Bogaerts Jonathan , Herrebout Wouter , Allenby Nick E. E. , Hall Michael
Published: December 2020

The application of genomic techniques to the investigation of understudied species of actinobacteria provides an expedited route to the discovery of new bioactive natural products. We report the isolation of the antibiotic polyketide tatiomicin, through a genomics and bioactivity informed analysis of the metabolome of the extremophile Amycolatopsis sp. DEM30355. Structural elucidation including absolute stereochemical assignment was performed using complementary crystallographic, spectroscopic and computational methods. Tatiomicin shows antibiotic activity against Gram-positive bacteria, including Methicillin-resistant Staphylococcus aureus (MRSA).
Chemo-Bio Catalysis Using Carbon Supports: Application in H2-Driven Cofactor Recycling
Authors: Zhao Xu , Cleary Sarah , Zor Ceren , Grobert Nicole , Reeve Holly , Vincent Kylie
Published: December 2020

Commercially available carbon-supported metal (metal/C) catalysts are investigated here for direct H2-driven NAD+ reduction. Selected metal/C catalysts are thenused for H2 oxidation with electrons transferred via the conductive carbon support material to an adsorbed enzyme for NAD+ reduction. These chemo-bio catalysts show improved activity and selectivity for generating bioactive NADH under ambient reaction conditions comparedto metal/C catalysts. The metal/C catalysts and carbon support materials (all activated carbon or carbon black) are characterised to probe which properties potentially influence catalyst activity. The optimised chemo-bio catalysts are then used to supply NADH to an alcohol dehydrogenase for enantioselective (>99% ee) ketone reductions, leading to high cofactor turnover numbers and Pd and NAD+ reductase activities of 441 h-1 and 2,347 h-1,respectively. This method demonstrates a new way of combining chemo- and biocatalysis on carbon supports, highlighted here for selective hydrogenation reactions.
Collagen Pentablock Copolymers Form Smectic Liquid Crystals as Precursors for Mussel Byssus Fabrication
Authors: Jehle Franziska , Priemel Tobias , Strauss Michael , Fratzl Peter , Bertinetti Luca , Harrington Matthew
Published: December 2020

Protein-based biological materials are important role models for the design and fabrication of next generation advanced polymers. Marine mussels (Mytilus spp.) fabricate hierarchically structured collagenous fibers known as byssal threads via bottom-up supramolecular assembly of fluid protein precursors. The high degree of structural organization in byssal threads is intimately linked to their exceptional toughness and self-healing capacity. Here, we investigated the hypothesis that multidomain collagen precursor proteins, known as preCols, are stored in secretory vesicles as a colloidal liquid crystal (LC) phase prior to thread self-assembly. Using advanced electron microscopy methods, including scanning TEM and FIB-SEM, we visualized the detailed smectic preCol LC nanostructure in 3D, including various LC defects, confirming this hypothesis and providing quantitative insights into the mesophase structure. In light of these findings, we performed an in-depth comparative analysis of preCol protein sequences from multiple Mytilid species revealing that the smectic organization arises from an evolutionarily conserved ABCBA penta-block co-polymer-like primary structure based on demarcations in hydropathy and charge distribution, as well as terminal pH-responsive domains

that trigger fiber formation. These distilled supramolecular assembly principles provide inspiration and strategies for sustainable assembly of nanostructured polymeric materials for

potential applications in engineering and biomedical applications.
On-Surface Porphyrin Transmetalation by Pb/Cu Redox Exchange
Authors: Herritsch Jan , Kachel Stefan R. , Fan Qitang , Hutter Mark , Heuplick Lukas , Münster Florian , Gottfried Michael
Published: December 2020

Metal complexes at surfaces and interfaces play a prominant role in many areas of modern technology, including catalysis, sensors, and organic electronics. An important aspect of these interfaces is the possible exchange of the metal center, because this reaction can drastically alter the properties of the metal complex and thus of the interface. Here, we demonstrate that such metal exchange reactions are indeed possible and can proceed already at moderate temperatures even in the absence of solvents. Specifically, we studied the redox transmetalation of a monolayer of lead(II)-tetraphenylporphyrin (PbTPP) with copper from a Cu(111) surface under ultrahigh-vacuum (UHV) conditions using multiple surface-sensitive techniques. Temperature dependent X-ray photoelectron spectroscopy (XPS) reveals that the Pb/Cu exchange starts already below 380 K and is complete at 600 K. The identity of the reaction product, CuTPP, is confirmed by mass spectrometric detection in a temperature-programmed reaction (TPR) experiment. Scanning tunneling microscopy (STM) sheds light on the adsorbate structure of PbTPP at 300 K and uncovers the structural changes accompanying the transmetalation and side-reactions of the phenyl substituents. Moreover, individual free Pb atoms are observed as a product of the metal exchange. Our study suggests that surfaces functionalized with metal complexes may consist of other species than intended under operation conditions, which often involve elevated temperatures.
Исследование возрастных изменений свободнорадикального окисления у больных раком толстой кишки
Authors: Зуйков С. А. , Полунин Г. Е.
Published: December 2020

Цель: сравнить изменения свободнорадикального окисления (СРО) в плазме крови здоровых людей и больных раком толстой кишки (РТК) в зависимости от возраста.Материалы и методы: материалом была плазма крови 80 здоровых добровольцев в возрасте от 40 до 80 лет, не имеющих онкопатологий желудочно-кишечного тракта и 26 больных РТК с I–II стадией заболевания. Гистологической формой РТК являлась аденокарцинома. Изучили активность ключевых ферментов катаболизма пуриновых нуклеотидов — аденозиндезаминазу (АДА) и ксантиноксидазу (КО) — которые являются стимуляторами СРО. В качестве продуктов, показателей интенсивности СРО исследовано суммарное содержание нитратов/нитритов (NOx) и уровень 2,4-динитрофенилгидразонов. Для изучения антиоксидантной системы (АОС), исследованы активности ферментов первой линии защиты — супероксиддисмутазы (СОД) и глутатионпероксидазы (ГПО). Методом исследования всех показателей была спектрофотометрия.Результаты: в плазме крови у здоровых людей при старении установлено увеличение ферментативных активностей АДА и КО, а так же содержание NOх и 2,4-динитрофенилгидразонов — показателей окислительной модификации белков. Аналогичные результаты изменения изучаемых показателей обнаружены и при опухолевой трансформации. Так же установлено, что при РТК происходит более выраженная интенсификация СРО с последующим формированием окислительного стресса (ОС). Выявлены корреляционные связи между ферментами пуринового обмена в плазме крови у здоровых людей и больных РТК.Выводы: полученные данные, свидетельствуют об усилении катаболизма пуринов, как при старении, так и при опухолевой трансформации, что может быть использовано в качестве прогностических факторов риска РТК.
The role of molecular genetic factors in the development of the first episode and recurrent noncardioembolic ischemic stroke
Authors:   Center for Speech Pathology and Neurorehabilitation, Moscow, Russia, Shishkova Veronika N. , Shishkova Veronika N. ,   Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia, Adasheva Tatiana V. ,   Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia, Stakhovskaia Liudmila V. ,   Pirogov Russian National Research Medical University, Moscow, Russia, Remennik Alla Iu. ,   Center for Speech Pathology and Neurorehabilitation, Moscow, Russia, Valiaeva Vera V. ,   Center for Speech Pathology and Neurorehabilitation, Moscow, Russia
Published: December 2020

Цель. Провести оценку распределения полиморфных аллелей генов APO A5 (rs34282181), APO A5 (rs619054), APO E (rs5174), APO C4 (rs1132899), АРО Н (rs4581), LPL (rs199675233), LP(a) (rs41267817), APO B (rs1042031), АРО В (rs676210), АРО D (rs7659), ANGPT4 (rs1044250), TNFа (rs1800620), VEGFA (rs62401172), IL8 (rs1803205), IL6 (rs56383910), MTHFR (rs1801131), MTHFR (rs1801133), ADIPOQ-AS1 (rs17366743), ADIPOQ-AS1 (rs185847354), ADIPOR2 (rs12342), GRM 1 (rs1047005), GRM 3 (rs2228595), BDNF (rs6265) для выявления ассоциации в развитии первого и повторных ишемических инсультов (ИИ) некардиоэмболического генеза. Материалы и методы. В рамках исследования, проводимого в два этапа, где первый этап представлен исследованием с дизайном «случай–конт-роль», а второй – когортным наблюдательным исследованием, провели определение 23 вариантов однонуклеотидных полиморфизмов генов у 206 пациентов, перенесших первый ИИ некардиоэмболического генеза, и 206 здоровых добровольцев, соответствующих по полу, возрасту и месту проживания группе пациентов. Генотипирование полиморфизмов проводили с использованием готовых зондов TaqMan. Результаты. Для однонуклеотидных полиморфных вариантов генов ADIPOQ-AS1 (rs17366743), АРО В (rs676210), APO A5 (rs619054), АРО D (rs7659) и IL8 (rs1803205) установлена ассоциация с развитием первого ИИ некардиоэмболического генеза. Для однонуклеотидного полиморфного варианта гена ADIPOR2 (rs12342) установлена ассоциация с защитой от развития повторного ИИ некардиоэмболического генеза. Заключение. Установили значимые ассоциации для однонуклеотидных полиморфных вариантов генов с развитием первого и повторного ИИ некардиоэмболического генеза. Ключевые слова: ишемический инсульт некардиоэмболического генеза, однонуклеотидные полиморфные варианты генов. Для цитирования: Шишкова В.Н., Адашева Т.В., Стаховская Л.В. и др. Роль молекулярно-генетических факторов в развитии первого и повторного ишемического инсульта некардиоэмболического генеза. Consilium Medicum. 2020; 22 (9): 14–22. DOI: 10.26442/20751753.2020.9.200324
An overview of pharmacological activities of acridine derivatives
Authors: Magesh M  , Gandhimathi R
Published: December 2020

The derivatives of acridine can be served as a lead molecule of an antibacterial, anti-viral antiprotozoal, anti-viral, antitubercular, anti-fungal, anti-malarial and anti-cancer agents. Even though the usage of acridine becomes limited due to its side effects, so many potent and safe compounds can be derived through molecular modification in the acridine ring. Since the resistance of pathogens and tumour cells has become more common nowadays, it necessitates the search of new drug candidates. Since the treatment and management of Alzheimer's disease is such a complicated and proper drug regimen is not designed so far, The cholinesterase activity of acridines can be used to derive novel compounds from treating Alzheimer's disease. The mosquito larvicidal activity of acridines is considered as an advantage as vector control to reduce the spreading rate of malaria. Unfortunately, the versatility of the acridine molecule is not entirely explored still. If new approaches may overcome the drawbacks of the acridines such as resistance of pathogens and tumour cells in synthesis and formulation acridine analogues will become a useful drug candidate for the treatment of diseases mentioned above. So this article aims to seek the attention of researchers in the acridine to utilise it’s a wide range of biological activities in the development of novel drug molecules for the various diseases in the future.
SPECTRAL STUDIES OF THE PROCESSES OF ALUMINUM NANOPOWDER FORMATION EXPOSING BY SHORT SERIES OF TWIN LASER PULSES IN THE AIR ATMOSPHERE
Authors: Баззал Ходор , Алексеенко Наталья Анатольевна , Воропай Евгений Семенович , Коваленко Максим Николаевич , Trinh Ngoc H. , Зажогин Анатолий Павлович
Published: December 2020

Проведено исследование процессов образования оксидированных нанопорошков Al в зависимости от количества импульсов при воздействии сдвоенных лазерных импульсов энергией 52 мДж и меж-импульсным интервалом 10 мкс на алюминиевую мишень, помещенную в закрытую стеклянную прямоугольную кювету. Установлено, что наибольшая интенсивность линий ионов Al(III) наблюдается при малом, порядка 15 импульсов, количестве последовательных сдвоенных импульсов в серии. Размер первичных частиц, оцененный с помощью электронной микроскопии высокого разрешения, преимущественно составил 50 - 60 нм, частицы собраны в агломераты.

The processes of formation of oxidized nanopowders depending on the number of pulses were studied when double laser pulses with an energy of 52 mJ and an interpulse interval of 10 microseconds were applied to an aluminum target placed in a closed rectangular glass cuvette. It was found that the highest intensity of the Al III ion lines is observed at a small, about 15 pulses, consecutive double pulses in a series. The size of primary particles estimated by high-resolution electron microscopy was mainly 50 - 60 nm, and the particles were collected in agglomerates.
EFFECTS OF NIOBIUM-DOPING ON THE DIELECTRIC AND SWITCHING PROPERTIES OF BARIUM TITANATE CRYSTALS
Authors: Большакова Наталья Николаевна , Завьялова Светлана Дмитриевна , Некрасова Галина Михайловна , Семенова Елена Михайловна
Published: December 2020

В работе представлены результаты исследований диэлектрических свойств, процессов переключения и доменной структуры ниобийсодержащих кристаллов титаната бария. Показано, что существенную роль в поведении доменной структуры кристаллов BaTiO:Nb : Nb играет примесь ниобия Nb, ионы которого замещают Ti и изменяют ионный состав решетки. При изменении температуры со скоростью порядка 0,3 К⋅с механически свободных кристаллов BaTiO : Nb в отсутствие внешних электрических полей, процессы перестройки доменной структуры происходят под воздействием внутренних термоупругих напряжений ~ 0,7 МПа и деполяризующих полей ~ 20 кВ-м.

This paper reports the results of investigations of dielectric properties, switching processes and the domain structure of niobium-containing barium titanate crystals. It was shown that an impurity of niobium Nb, whose ions replace Ti and change the ionic composition of the lattice, is important for behavior of the domain structure of BaTiO: Nb crystals. At a change in temperature (0,3 К⋅с ) a transformation of the domain structure occurs in the BaTiO: Nb crystals under the influence of the internal thermoelastic stresses ~ 0,7 MPa and the depolarizing fields ~ 20 kV/m.
INFLUENCE OF A DOPING ION ON THE PROCESSES OF DEFECT FORMATION IN SIMULATED LITHIUM NIOBATE CLUSTERS
Authors: Стародуб Ольга Ростиславна , Воскресенский Вячеслав Михайлович , Сидоров Николай Васильевич , Палатников Михаил Николаевич
Published: December 2020

Разработанный нами подход к расчету кластеров в структуре кристалла ниобата лития на основе не элементарных ячеек, а кислородных кластеров, позволяет не допустить разорванности структур на границах кластера и сохранить электронейтральность модельного кластера. Обнаружены оптимальный размер кластера, имеющий минимум энергии, и структура, стремящаяся к структуре конгруэнтного кристалла ниобата лития, подтверждающая энергетическую оптимальность конгруэнтного кристалла. При введении легирующего иона 3 + во всех трёх случаях концентраций наблюдается энергетический оптимум именно вблизи конгруэнтного соотношения Li/Nb. Также наблюдается понижение энергии после оптимизации модельного кластера, что согласуется с данными спектрального анализа об образовании внутри кристалла микрокластеров с локальным упорядочением структуры.

An approach developed by us to calculation of clusters in the structure of a lithium niobate crystal based not on unit cells, but on oxygen clusters, makes it possible to prevent disruption of structures at the boundaries of the cluster and to preserve the electroneutrality of the model cluster. An optimal cluster size with a minimum energy and a structure tending to the structure of a congruent lithium niobate crystal, confirming the energy optimality of a congruent crystal, are found. With the introduction of the dopant ion 3 + , in all three cases of concentrations, an energy optimum is observed precisely near the congruent ratio Li/Nb . A decrease in energy is also observed after optimization of the model cluster, which is consistent with the data of spectral analysis on the formation of microclusters with local ordering of the structure inside the crystal.
CHANGE OF THERMODYNAMIC CHARACTERISTICS OF THE CARBON ADSORBENT FAS-3 AT ADSORPTION OF BENZENE
Authors: Твардовский Андрей Викторович , Зайцев Дмитрий Сергеевич , Фомкин Анатолий Алексеевич
Published: December 2020

Впервые проведены комплексные исследования адсорбционной деформации - сорбострикции микропористого углеродного адсорбента ФАС-3 при адсорбции паров бензола из потока газа-носителя - азота в неравновесных условиях. Изучены изотермы адсорбции паров бензола микропористым углеродным адсорбентом ФАС-3 в равновесных условиях. Были представлены формулы и проведены расчеты изменений энтропии и внутренней энергии адсорбента в адсорбционном процессе.

For the first time, complex studies were carried out on adsorption deformation - sorbostriction of the microporous carbon adsorbent FAS-3 at adsorption of benzene vapors from the flow of carrier gas - nitrogen in non-equilibrium conditions. Adsorption isotherms of benzene vapors by the microporous carbon adsorbent FAS-3 under equilibrium conditions has been studied. Calculations of changes in the entropy and internal energy of the adsorbent in the adsorption process were performed.
DETERMINATION OF OPTIMAL MODES FOR MEASURING THE SIZE OF COLLOIDAL PARTICLES BY PHOTON-CORRELATION SPECTROSCOPY AND ACOUSTIC SPECTROSCOPY
Authors: Ясная Мария Анатольевна , Блинов Андрей Владимирович , Блинова Анастасия Александровна , Шевченко Ирина Михайловна , Маглакелидзе Давид Гурамиевич , Сенкова Анна Олеговна
Published: December 2020

В данной работе представлены результаты измерения размера коллоидных частиц SiO двумя методами - фотонно-корреляционной спектроскопией динамического рассеяния света и акустической спектроскопией. Математическая обработка экспериментальных данных с помощью программного обеспечения спектрометров «Photocor-Complex» и «DT-1202» позволила получить гистограммы распределения по размерам коллоидных частиц диоксида кремния в стандартном образце. Впервые установлено, что оптимальными параметрами для измерения размера коллоидных частиц SiO методом фотонно-корреляционной спектроскопии являются концентрация вещества менее 1 %, угол положения фотодетектора 90° и количество измерений в цикле 50 - 100, а акустической спектроскопии - концентрация 1 %.

This paper presents the results of measuring the size of colloidal SiO particles by two methods - photon-correlation spectroscopy of dynamic light scattering and acoustic spectroscopy. Mathematical processing of experimental data using the software of the Photocor-Complex and DT-1202 spectrometers made it possible to obtain of the size distribution histograms for silicon dioxide colloidal particles in a standard sample. For the first time it has been established that the optimal parameters for measuring the size of colloidal SiO particles by the photon-correlation spectroscopy are the substance concentration less than 1 %, the photodetector position angle of 90 degrees and the number of measurements in a cycle of 100 -150, and for the acoustic spectroscopy - 1 % substance concentration.
NORMALIZATION OF CLASSICAL HAMILTONIAN SYSTEMS WITH TWO DEGREES OF FREEDOM
Authors: Беляева Ирина Николаевна , Кириченко Игорь Константинович , Пташный Олег Дмитриевич , Чеканова Наталья Николаевна , Ярхо Татьяна Александровна
Published: December 2020

В работе исследовано семейство гамильтоновых систем с двумя степенями свободы. Расчетами сечений Пуанкаре показано, что при произвольных значениях параметров функции Гамильтона система является неинтегрируемой и в ней реализуется динамический хаос. Найдено, что для трех наборов параметров рассматриваемая система является интегрируемой, однако в одном интегрируемом случае при этих же значениях параметров на поверхности потенциальной энергии имеется область с отрицательной гауссовой кривизной, в то же время в двух других случаях интегрируемости при соответствующих значениях параметров областей с отрицательной гауссовой кривизной не имеется. Таким образом, наличие областей с отрицательной гауссовой кривизной на поверхности потенциальной энергии не достаточно для развития в системе глобального хаоса. Получена классическая нормальная форма для произвольных значений параметров.

The family of the Hamiltonian systems with two degrees of freedom was investigated. The calculations of the Poincaré sections show that with arbitrary values of the parameters of the Hamilton function, the system is non-integrable and dynamic chaos is realized in it. For the three parameter sets, the system in question was found to be integrable, but shows that in one integrable case on the potential energy surface (PES) there are regions with the negative Gaussian curvature. It was found that in one integrable case for the same values of the parameters, the potential energy surface has a region with the negative Gaussian curvature. At the same time, in the other two cases, the domains with negative Gaussian curvature are not integrable for the corresponding values of the parameters. Thus, the presence of regions with negative Gaussian curvature on the potential energy surface is not enough for the development of the global chaos in the system. The classical normal form for arbitrary parameter values is obtained.
SPECTRAL STUDIES OF THE AlO AND AlN NANOPOWDER FORMATION EXPOSED ALUMINUM BY A SERIES OF TWIN LASER PULSES IN THE AIR ATMOSPHERE
Authors: Баззал Ходор , Алексеенко Наталья Анатольевна , Воропай Евгений Семенович , Коваленко Максим Николаевич , Патапович Мария Петровна , Зажогин Анатолий Павлович
Published: December 2020

Проведено исследование процессов образования нанопорошков AlO и AlN при воздействии сдвоенных лазерных импульсов энергией 52 мДж и между импульсным интервалом 10 мкс на алюминиевую мишень, помещенную в закрытую стеклянную прямоугольную кювету, в зависимости от количества импульсов. Установлено, что наибольшая интенсивность полос субоксида AlO и молекул AlN наблюдается при 40 - 50 последовательных сдвоенных импульсов в серии. Размер первичных частиц, оцененный с помощью электронной микроскопии высокого разрешения, преимущественно составил 30 - 40 нм, частицы собраны в агломераты. Методом комбинационного рассеяния показана возможность получения активных форм оксидов алюминия и продуктов взаимодействия их с кислородом и азотом воздуха в лазерной плазме, осаждаемых на стеклянную поверхность.

A study of the AlO and AlN nanopowder formation under the influence of twin laser pulses with an energy of 52 mJ and between the pulse interval of 10 microseconds on an aluminum target placed in a closed glass rectangular box, depending on the number of pulses. It was found that the highest intensity of the bands of AlO suboxide and AlN molecules is observed at 40 - 50 consecutive double pulses in a series. The size of the primary particles estimated using the high-resolution electron microscopy was mainly 30 - 40 nm, the particles were collected in agglomerates. The possibility of obtaining active forms of aluminum oxides and products of their interaction with oxygen and air nitrogen in a laser plasma deposited on a glass surface is shown by RAMAN methods.
THE STRUCTURE FORMATION OF RAPIDLY SOLIDIFIED FOIL OF THE EUTECTIC ALLOY SN-8,8 WT. % ZN
Authors: Зерница Денис Александрович , Шепелевич Василий Григорьевич
Published: December 2020

Представлены результаты исследования микроструктуры быстрозатвердевшей фольги эвтектического сплава Sn - 8,8 мас.% Zn поверхностей A и B, определены параметры микроструктуры. Проведено исследование текстуры выделений твёрдых растворов олова и цинка в фольге, представлены полюсные плотности дифракционных линий данных фаз. Изучено влияние сверхбыстрого охлаждения на распределение углов разориентации соседних и случайно выбранных зёрен для поверхностных слоёв фольги, контактирующих с подложкой () и атмосферой () соответственно.

The results are presenred of a study of the microstructure of rapidly solidified foil of the eutectic alloy Sn - 8,8 wt.% Zn A and B surfaces, microstructure parameters are determined. The texture of the precipitates of tin and zinc solid solutions in the foil was studied, and the pole densities of the diffraction lines of these phases are presented. The effect is studied of ultrafast cooling on the distribution of misorientation angles of neighboring and randomly selected grains for surface foil layers in contact with surfaces A and B .
CREATING BIOCOMPOSITES BASED ON NANO-SIZED HYDROXYAPATITE DOPED WITH ZIRCONIUM OXIDE AND CALCIUM FLUORIDE
Authors: Переверзев Данил Ильич , Богданова Екатерина Анатольевна , Нефедова Ксения Валерьевна
Published: December 2020

В статье обсуждается возможность упрочнения наноструктурированного гидроксиапатита (ГАП), полученного осаждением из раствора, путем введения оксида циркония и фторида кальция. Показано влияние качественного и количественного состава на протекание процессов спекания и прочностные характеристики исследуемых образцов. Экспериментально установлено, что максимальными прочностными характеристиками и постоянным составом обладает образец Ca(PO)(OH) - 15%CaF -5%ZrO. Композит обладает плотной равномерной структурой с высокой степенью кристалличности, является перспективным материалом для дальнейших исследований с целью внедрения его в медицинскую практику.

The article discusses the possibility of strengthening nanostructured hydroxyapatite (HAP) obtained by precipitation from a solution by introducing zirconium oxide and calcium fluoride. The influence of qualitative and quantitative composition on sintering processes and strength characteristics of investigated samples has been shown. It was found experimentally that the sample has the maximum strength characteristics and constant composition Ca(PO)(OH) - 15%CaF -5%ZrO. The composite has a dense uniform structure with a high degree of crystallinity and is a promising material for further research in order to introduce it into medical practice.
PROCEDURE FOR DETERMINING HYDRAULIC JET BARBOTTER RESISTANCE FOR COLLECTING FINE DUST
Authors: Свердлик Григорий Иосифович , Атаева Анжела Юрьевна , Атаев Амонд Рафаэлович
Published: December 2020

В СКГМИ (ГТУ) разработана конструкция струйного барботера, в основу которого положена запатентованная конструкция основного узла аппарата -распределительной тарелки, позволяющей реализовать в барботере пенный режим. Данный пылеуловитель позволяет улавливать мелкие частицы пыли ( < 1 мкм), включая наночастицы, не улавливаемые в рукавных фильтрах. В статье приведена методика расчета гидравлического сопротивления барботера, необходимая для использования при выборе вентилятора для процесса пылеулавливания в барботере. Гидравлическое сопротивление барботера определяется как сумма составляющих: статического давления слоя жидкости, капиллярного перепада в зоне образования пузырьков и сопротивлений деталей распределительной тарелки. Разработанная методика была использована при проектировании технологической линии очистки газов от пылевидных возгонов вельц-печей цинкового производства, содержащих наночастицы.

North Caucasian Institute of Mining and Metallurgy (State Technological University) has developed a design of a jet bubbler which is based on the patented design of the device main unit - a distribution plate, which allows to implement a foam mode in the bubbler. This dust collector allows you to capture small dust particles (< 1 microns), including nanoparticles, that are not captured in bag filters. The article presents a method for calculating the hydraulic resistance of the bubbler, which is required for use, when selecting a fan for the process of dust collection in the bubbler. The hydraulic resistance of the bubbler is defined as the sum of the components: the static pressure of the liquid layer, the capillary drop in the zone of bubbles formation and the resistances of distribution plate parts. The developed method was used in the design of a process line for cleaning gases from pulverized ascents of waelz kiln of zinc production containing nanoparticles.
SORPTION AND PHOTOCATALYTIC ACTIVITY ZNCUO (X=0,05 AND 0,15) TO AS (III) IN AN ALKALINE MEDIUM
Authors: Гырдасова Ольга Ивановна , Пасечник Лилия Александровна , Красильников Владимир Николаевич , Суриков Владимир Трофимович , Кузнецов Михаил Владимирович
Published: December 2020

С использованием формиатогликолятных комплексов ZnCu(HCOO)(OCHCHO) (0 ≤ х ≤ 0,15) получены твердые растворы ZnCuO с 1D и композиты ZnCuO / CuO со сферической морфологией агрегатов соответственно. Материалы апробированы в реакции фотоокисления As(III) при воздействии ультрафиолетового и видимого излучения. Установлено, что медь является эффективной допирующей примесью в составе твердого раствора ZnCuO (0 ≤ х ≤ 0,1). Присутствие ее в оболочке композита ZnCuO / CuO негативно влияет на фотоактивность материала вплоть до подавления фотокатализа в видимом световом диапазоне. Показана также сорбционная эффективность материалов к мышьяку независимо от состава и морфологии материала. Согласно данным рентгеновской фотоэлектронной спектроскопии на поверхности образцов после сорбции мышьяк находится преимущественно в виде As(III) .

1D solid solutions ZnCuO and composites ZnCuO / CuO with spherical morphology of aggregates from formate glycolate complexes ZnCuO (HCOO)(OCHCHO) (0 ≤ x ≤ 0,15) were obtained. All materials have been tested in the reaction of As(III) photooxidation upon exposure to ultraviolet and visible radiation. It was found that copper is an effective doping impurity in the composition of the solid solution ZnCuO (0 ≤ x ≤ 0,1). Its presence in the shell of the ZnCuO / CuO composite negatively affects the photoactivity of the material up to suppression of photocatalysis in the visible light range. The sorption efficiency of materials for arsenic is also shown, regardless of the composition and morphology of the material. According to x-ray photoelectron spectroscopy data, the surface of the samples after sorption contains arsenic mainly in the form of As(III).
CALCITE POWDER DEFORMATION IN THE PRESENCE OF AQUEOUS SOLUTIONS OF VARIOUS COMPOSITION
Authors: Симонов Ярослав Игоревич , Скворцова Зоя Николаевна , Траскин Владимир Юрьевич
Published: December 2020

Измеренные скорости уплотнения порошка кальцита под действием одноосной нагрузки в присутствии насыщенного раствора CaCO, содержащего катионы магния или гумат-анионы, сопоставлены с расчетами скорости деформации, проведенными с учетом растворимости, кинетики растворения и скорости массопереноса вещества матрицы в поровой жидкости. Адекватность предложенной схемы расчета подтверждается незначительным различием экспериментальных и вычисленных значений (в пределах 20 %). Показано, что скорость деформации кальцита в растворах, содержащих ионы магния, лимитируется скоростью растворения материала из-за доломитизации поверхности. Замедление скорости уплотнения в присутствии гумат-анионов также происходит из-за частичного блокирования поверхности в результате адсорбции гумата.

The rates of calcite powder compaction under uniaxial stress in CaCO saturated aqueous solutions containing magnesium cations or humate anions have been compared with computed rate estimations. The interplay of calcite solubility, dissolution kinetics, and mass transfer rate of solid matter through the liquid bulk controls the overall process kinetics. A not significant difference between the experimental and calculated datasets (within 20%) confirms the adequacy of the model proposed. The calcite creep rate in magnesium-containing media is limited by the material dissolution stage as a result of the surface dolomitization. The creep hindering by humate anions is likely to be due to the partial surface coverage with adsorbed matter.
Siberian Diary of Benedict Dybovsky
Authors:   Irkutsk State University, Ivanov A. A.
Published: December 2020

A review of the collection of memoirs of Benedict Dybovsky, which recreated the events of his stay in Siberian exile after the suppression of the January 1863 uprising in Poland. The author describes in detail his “involuntary journey” from St. Petersburg to Transbaikalia, made as part of the stage party of Polish exiles, recreates paintings of hard labor and everyday life in the settlement. The pages of the diary also tell about the author's scientific research conducted by him in Dauria, the Far East and, of course, on the shores of Lake Baikal in 1864–1877.
Housing Crisis of 1920s from Regional Perspective of Siberia and Textual Evidence of “Krasnoyarsk Worker” Newspaper
Authors:   Krasnoyarsk State Agrarian University, Bershadskaya S. V.
Published: December 2020

Тhe article examines the everyday problems and moods of towndwellers about the housing crisis at the beginning of 1920s. The article analyzes the publications (editorial articles and articles of the worker correspondents) of the local periodical “Krasnoyarsk Worker” (“Krasnoyarsky Rabochy”), the organ of the Yenisei Provincial Committee of the RCP (b.), during the period 1921-25. The publications of the provincial Siberian periodical are of particular value despite the facts that the newspaper was the Soviet press organ, which implemented and promoted at the local level the policy of the central party committee, and not all the materials that had come to the editorial office were published.
Statistical Analysis of Details and Factors of 1920s Famine in the Tatar Republic
Authors:   Kazan Scientific Center RAS, Akhmetova M. A. , Nurutdinova A. R. ,   Kazan Scientific Center RAS
Published: December 2020

The year 2020 in the Republic of Tatarstan is declared the year of the 100th anniversary of the formation of the Tatar Autonomous Soviet Socialist Republic. The purpose of the article is a versatile study of archival and record-keeping documents, statistical information and materials of the periodical press, which contribute to the development and arrangement of modern accents and views on the history of the republic. Using the possibilities of scientific work at the intersection of various sciences, the authors of the article have the prospect of an absolutely new approach to the disclosure of the topic being studied. To work with archival documents, the task of statistical and analytical processing of data is set in order to identify significant factors and correlations.
Da migração à formatura: escola rural e analfabetismo no Município De Ituiutaba, MG, 1940-60
Authors: Ribeiro Betânia De Oliveira Laterza , Silva Elizabeth Farias da , Quillici Neto Armindo
Published: December 2020

Analfabetismo, ascensão econômica pela rizicultura e migração rural marcaram o município de Ituiutaba nos anos 1940–60. Este trabalho apresenta uma compreensão das inter-relações desses fenômenos pelo viés da criação de escolas rurais: o que o governo fez pela escolarização da população rural? Para responder a essa pergunta, a pesquisa se valeu de dados estatísticos, atas, relatos orais e fotografias como fontes históricas. Os resultados indicam que o governo local pode até ter feito mais investimentos na criação de escolas urbanas e rurais com recursos da agricultura; mas não bastaram para aplacar o analfabetismo. Embora a sede do município possa ter tido uma população com taxas elevadas de alfabetização, o meio rural tinha uma população de analfabetos que invertiam tais taxas.