bluuebunny/crossref_metadata_2025 huggingface dataset:
Ectopic pregnancy as a complication after assisted reproductive techniques. Case report
Authors:   Medical Center “XXI Сentury”, Saint Petersburg, Russia, Kiyok Marina A.
Published: October 2021

Ectopic pregnancy (EP) is a rare and severe complication of assisted reproductive techniques (ART). A specific feature of EP after ART is a high frequency of rare atypical forms of EP, the absence of a specific clinical picture and a high probability of recurrent EP, which makes certain difficulties in terms of diagnosis. Interstitial pregnancies occur in 1–6% of all ectopic pregnancies and in 7.3% cases of EB which were the results of in vitro fertilization programs (IVF). The anatomical features of the blood supply in the intramural segment of the fallopian tube provide favorable conditions for the progression of pregnancy on the average up to 10 weeks of gestation, simulating the intra-uterine pregnancy. Chorionic villi, growing into the thickness of the myometrium, create a high risk of profuse intra-abdominal bleeding. The article presents a clinical case of a rare form of ectopic pregnancy in the interstitial segment of the fallopian tube after IVF. The patient had previously undergone a bilateral salpingectomy by tubal pregnancies. This clinical example shows the meaning of precise diagnosis and timely provision of highly qualified specialized medical care.
ẢNH HƯỞNG CỦA NHIỆT ĐỘ, THỜI GIAN VÀ TỐC ĐỘ GIA NHIỆT ĐẾN HÌNH THÁI CỦA VẬT LIỆU SnO2
Authors: Đặng Thị Thanh Nhàn , Hoang Thi Trang , Ngo Duy Y , Lê Quốc Thắng
Published: October 2021

SnO2 có cấu trúc đa cấp hình bông hoa dạng que đã được tổng hợp bằng cách tiến hành nhiệt phân SnO2/chitosan trong môi trường khí nitơ. Các yếu tố ảnh hưởng đến hình thái của sản phẩm đã được khảo sát bao gồm nhiệt độ nung, thời gian nung và tốc độ gia nhiệt. Kết quả cho thấy tiến hành nung SnO2/chitosan trong khí nitơ ở 500 °C trong 6 giờ với tốc độ gia nhiệt 10 °C/phút thu được sản phẩm SnO2/cacbon có dạng màng bền và giữ nguyên hình dạng của màng SnO2/chitosan ban đầu, SnO2 có tính tinh thể cao và có cấu trúc đa cấp hình bông hoa. Vật liệu được đặc trưng bằng phương pháp nhiễu xạ tia X, hiển vi điện tử quét và phân tích nhiệt trọng lượng. Quá trình hình thành cấu trúc đa cấp hình bông hoa dạng que của SnO2 đã được đề nghị.SnO2 có cấu trúc đa cấp hình bông hoa dạng que đã được tổng hợp bằng cách tiến hành nhiệt phân SnO2/chitosan trong môi trường khí nitơ. Các yếu tố ảnh hưởng đến hình thái của sản phẩm đã được khảo sát bao gồm nhiệt độ nung, thời gian nung và tốc độ gia nhiệt. Kết quả cho thấy tiến hành nung SnO2/chitosan trong khí nitơ ở 500 °C trong 6 giờ với tốc độ gia nhiệt 10 °C/phút thu được sản phẩm SnO2/cacbon có dạng màng bền và giữ nguyên hình dạng của màng SnO2/chitosan ban đầu, SnO2 có tính tinh thể cao và có cấu trúc đa cấp hình bông hoa. Vật liệu được đặc trưng bằng phương pháp nhiễu xạ tia X, hiển vi điện tử quét và phân tích nhiệt trọng lượng. Quá trình hình thành cấu trúc đa cấp hình bông hoa dạng que của SnO2 đã được đề nghị.
ẢNH HƯỞNG CỦA MÔI TRƯỜNG NUÔI CẤY LÊN SINH TRƯỞNG CỦA CALLUS CÂY GIẢO CỔ LAM (Gynostemma pentaphyllum (Thunb.) Makino) – MỘT CÂY DƯỢC LIỆU CÓ GIÁ TRỊ
Authors: Hoàng Tấn Quảng , Phạm Thị Diễm Thi , Lan Trần Thúy , Phạm Mai Thu Thủy , Vũ Đức Hoang , Phan Thị Á Kim
Published: October 2021

Giảo cổ lam (Gynostemma pentaphyllum (Thunb.) Makino) là một cây thuốc dân gian thuộc họ Bầu bí. Cây phân bố rộng ở miền Nam Trung Quốc, Nhật Bản, Hàn Quốc và Việt Nam. Các thành phần có hoạt tính sinh học quan trọng của Giảo cổ làm là saponin glycoside (gypenoside) và các chất chống oxy hóa. Giảo cổ lam được sử dụng hỗ trợ chống ung thư, chống oxy hóa, giảm cholesterol, tăng cường miễn dịch và các tác dụng khác. Trong nghiên cứu này, callus sơ cấp của cây Giảo cổ lam được sử dụng làm nguyên liệu để đánh giá ảnh hưởng của môi trường nuôi cấy lên khả năng phát sinh và sinh trưởng của callus thứ cấp. Kết quả cho thấy, callus được nuôi cấy trên môi trường MS có bổ sung 2,0 mg/L kinetin và 0,5 mg/L indole-3-butyric acid sinh trưởng tốt nhất; tỷ lệ tạo callus thứ cấp cao (100%); callus đáp ứng được tiêu chuẩn để nuôi cấy huyền phù. Hàm lượng gypenoside và Rb1 trong callus là 36,298 và 0,009 mg/g chất khô; gypenoside thấp hơn trong lá (65,58%) và gần tương đương với mẫu thân (92,38%) của sản phẩm thu mua từ thị trường. Dung môi thích hợp để tách chiết gypenoside là methanol. Callus thu được sẽ được sử dụng làm nguyên liệu cho nuôi cấy tế bào huyền phù trong các nghiên cứu tiếp theo.
TÍNH HIỆU QUẢ CỦA MÔ HÌNH CARHART CHO CÁC CỔ PHIẾU THUỘC NHÓM NGÀNH TÀI CHÍNH, BẢO HIỂM VÀ NGÂN HÀNG – TIẾP CẬN VỚI PHƯƠNG PHÁP HỒI QUY PHÂN VỊ
Authors: Phạm Lệ Mỹ , Phan Thị Thanh Thuý
Published: October 2021

Hồi quy phân vị là một công cụ hiệu quả trong nghiên cứu tài chính và phân tích rủi ro khi thị trường có các cú sốc. Nghiên cứu này đánh giá tác động của các nhân tố thị trường, quy mô, giá trị và xu hướng sinh lợi trong quá khứ (momentum) đến lợi suất của các cổ phiếu thuộc nhóm ngành tài chính, bảo hiểm và ngân hàng niêm yết trên sàn giao dịch chứng khoán Thành phố Hồ Chí Minh (HOSE) khi thị trường có các cú sốc bằng phương pháp hồi quy phân vị. Kết quả cho thấy khi thị trường tài chính bất ổn  chỉ có các nhân tố như chỉ số quy mô công ty, chỉ số giá trị của công ty và xu hướng sinh lợi trong quá khứ tác động tới lợi suất cổ phiếu.
Prospects for the use of photos and video images fixed on electronic-digital media in disclosure and investigation of crimes
Authors:   Altai State University, Karimov V. Kh.
Published: October 2021

The article under consideration reveals the existing problems of using digital media containing photo and video information. It is concluded that the traditional methods of forensic portrait examination are not always applicable, since a significant part of the images are not suitable for research. Proposals have been developed to improve the use of photo and video images by creating specialized data banks: images of famous persons, images of unknown persons, their anthropometric and functional parameters. It is recommended to improve forensic techniques by studying the dynamic characteristics of a person, individual elements of his appearance. It is recommended to pay attention to the possibilities of anthropometric identification by the anatomical elements of the body, where the dimensions of individual parts of the body are taken as signs, and identification is carried out by their totality. It has been established that the dimensions can be set according to known objects in the frame and according to conventional units, where a separate element is taken as a parameter. It is recommended to actively use the existing experience in recreating the missing elements based on the technologies of subjective portraits. The need for analytical work in order to obtain additional forensic information displayed on the frames is indicated. The possibility of searching and identifying persons by their appearance on the Internet using specialized programs is indicated. It is recommended to pay attention to the digital component of the image, by which it is possible to determine the time and place of shooting, the camera model, the conditions in which the shooting was carried out, and obtaining other information. The conclusion is made about the possibility of conducting research of the situation in the framework of forensic-traceological examination.
Legal regulation of the turnover of biometric data of citizens in the European union
Authors:   Irkutsk State University, Kolosov A.V.
Published: October 2021

Ensuring the security of a person and society is one of the priority and important areas of activity of any legal state. Measures aimed at countering crime and combating offenses in the information sphere are impossible without interaction and cooperation between states, since such violations are of a cross-border nature. The article examines the activities of theEuropean law in terms of creating a biometric database - Common Identity Repository (CIR)) and a project related to limiting the use of artificial intelligence in areas that pose a threat to the protection of personal, biometric data of citizens of the European Union. It is concluded that the processing of biometric data is associated with high risks of violations of the rights of individuals, and work with this kind of information should meet a certain goal, have restrictions on the volume of processed data and on the duration of their storage for solving specific tasks.
ЭКОЛОГИЧЕСКАЯ БЕЗОПАСНОСТЬ КАК ОСНОВА ОБЕСПЕЧЕНИЯ РАЗВИТИЯ ЧЕЛОВЕЧЕСКОГО ПОТЕНЦИАЛА НАСЕЛЕНИЯ РЕГИОНА
Authors: Митюгина Марина Михайловна , Кравченко Татьяна Вячеславовна , Чайников Валерий Николаевич
Published: October 2021

Цель работы. Целью работы является рассмотрение основных параметров экологической безопасности и определение степени их влияния на уровень развития человеческого потенциала населения региона. Метод или методология проведения работы. В процессе проведения исследования использовались такие общенаучные методы познания, как: теоретический анализ, конкретизация, логический и статистический анализ, системный подход к решению проблем. Основой для проведения исследования послужили статистические данные, труды отечественных и зарубежных исследователей, посвященные проблемам экологической безопасности. Результаты работы. В статье представлено рассмотрение основных параметров уровня экологической безопасности региона, проведен анализ показателей качества водного и воздушного пространства по регионам Российской Федерации, определены основные тенденции развития рассматриваемых индикаторов, проанализирована корреляционная взаимосвязь между показателями объемов выбросов загрязняющих веществ в атмосферу, исходящих от стационарных источников, и заболеваемости органов дыхания, а также между объемами сбросов загрязненных сточных вод и заболеваемости кожи и подкожной клетчатки. Область применения результатов. Результаты исследования могут быть использованы региональными органами власти при разработке целевых программ, ориентированных на обеспечение экологической безопасности и развитие человеческого потенциала. Выводы. На сегодняшний день одним из приоритетных направлений деятельности по обеспечению экологической безопасности региона является улучшение качества жизни, здоровья и увеличение продолжительности жизни населения путем снижения неблагоприятного воздействия экологических факторов и улучшения экологических показателей окружающей среды. Проведенный корреляционный анализ влияния параметров качества водного и воздушного бассейнов на уровень заболеваемости населения показал, что среди рассмотренных значений показателей отсутствует единая общая тенденция, что указывает на отсутствие прямо-пропорциональной зависимости между параметрами объемов выбросов загрязняющих веществ в атмосферу и уровнем заболеваемости населения болезнями органов дыхания, а также между объемом сбросов загрязненных сточных вод на болезни кожи и подкожной клетчатки.
ФИНАНСОВОЕ ОБЕСПЕЧЕНИЕ АНТИКРИЗИСНЫХ МЕР В УСЛОВИЯХ ПАНДЕМИИ КОРОНАВИРУСНОЙ ИНФЕКЦИИ
Authors: Самойлова Карина Николаевна , Такмазян Аида Самвеловна
Published: October 2021

Цель работы. Объективные экономические трудности, вызванные новыми экономическими условиями, обусловили необходимость реализации антикризисных мер, направленных на поддержку как экономической деятельности, особенно малого и среднего предпринимательства, так и определенных категорий граждан. В статье рассмотрены вопросы финансирования мер, направленных на сглаживание последствий пандемии COVID-19. Метод или методология проведения работы. В процессе исследования применялся системный подход, основанный на общих принципах и методах научного анализа. В основе данной работы лежат нормативно-правовые акты, регулирующие вопросы финансового обеспечения антикризисных мер в условиях пандемии коронавирусной инфекции. Результаты. Социальные и экономические последствия пандемии новой коронавирусной инфекции потребовали беспрецедентных действий как мирового сообщества в целом, так и отдельных государств. Вместе с тем качественную оценку реализуемых мер государственной финансовой поддержки дать достаточно сложно, так как объемы экономического ущерба и на уровне отдельных территорий, и государства в целом сложно прогнозировать по причине неопределенных сроков продолжительности ограничительных мероприятий. Область применения результатов. Результаты проведенного исследования могут использоваться органами государственной власти и управления субъектов Российской Федерации в процессе реализации антикризисных мер в условиях эпидемиологической угрозы, а также гражданами, имеющими право на поддержку. Выводы. Рассмотренные в статье меры поддержки направлены на нивелирование экономических и социальных последствий пандемии новой коронавирусной инфекции. Эти последствия проявились в растущей безработице, падении доходов населения, сокращении рабочих мест, что потребовало как разработанной комплексной системы государственных мероприятий, так и соответствующего финансового обеспечения.
ПОВЕДЕНЧЕСКИЕ ТРАЕКТОРИИ ПЕРСОНАЛА КАК КЛЮЧЕВОГО ПАРТНЕРА ОРГАНИЗАЦИИ И ОПТИМИЗАЦИЯ ЕГО ВЛИЯНИЯ НА КОРПОРАТИВНУЮ СТРАТЕГИЮ ПОСРЕДСТВОМ РАЗВИТИЯ МЕТОДИЧЕСКОГО ИНСТРУМЕНТАРИЯ МАРКЕТИНГОВЫХ ИССЛЕДОВАНИЙ
Authors: Никитина Анастасия Викторовна
Published: October 2021

Цель работы. В статье исследованы теоретические и методические аспекты персонального маркетинга, содержательно охарактеризованы маркетинговая деятельность организации, этапы деятельности сотрудников, факторы, определяющие направления маркетинга персонала. Метод или методология проведения работы. Рассмотрены этапы маркетингового исследования, включающие определение проблемы, анализ вторичной информации, сбор первичной информации, анализ полученной информации, подготовку рекомендаций, принятие решений и другие формы использования результатов исследования; проанализированы методы сбора маркетинговой информации, сгруппированные и представленные тремя большими группами: кабинетными исследованиями, полевыми исследованиями, а также комбинированными исследованиями; осуществлен мониторинг методов проведения маркетинговых исследований, включающий первичные и вторичные данные, а также методы сбора качественных данных, методы сбора количественных данных и так называемые MIX-методы; особое внимание в контексте заявленного уделено технологиям опроса, которые классифицированы по способу проведения, по количеству тем, по многократности проведения, а также в зависимости от структуры поставленных вопросов; визуализирован план маркетинга персонал-организации, включающий инструменты политики и стимулирования, инструменты коммуникативной политики, а также методы привлечения персонала; охарактеризованы инструменты персонал-маркетинга; уточнены его основные структурные элементы; охарактеризованы основные структурные элементы маркетинга персонала и маркетинга отношений, описаны структурные блоки маркетинговой доктрины управления персоналом; определены уровни персонал-маркетинга, а также факторы, на него влияющие (внешние и внутренние); предложены визуализации факторов формирования технологий маркетинга персонала и его информационной функции. Результаты. Обновлены критерии оценки результативности подсистемы персонал-маркетинга. Область применения результатов. Результаты проведенного исследования могут быть использованы академическим, вузовским, бизнес-сообществами для обновления теоретико-методических положений, касающихся позиционирования маркетинга персонала как элемента стратегии конкурентоспособности. Выводы. Формализованы задачи персонал-маркетинга в условиях усиления рыночной неопределенности.
Analysis of Dynamic Response Characteristics for 5 MW Jacket-type Fixed Offshore Wind Turbine
Authors: Kim Jaewook , Heo Sanghwan , Koo WeonCheol
Published: October 2021

This study aims to evaluate the dynamic responses of the jacket-type offshore wind turbine using FAST software (Fatigue, Aerodynamics, Structures, and Turbulence). A systematic series of simulation cases of a 5 MW jacket-type offshore wind turbine, including wind-only, wave-only, wind & wave load cases are conducted. The dynamic responses of the wind turbine structure are obtained, including the structure displacement, rotor speed, thrust force, nacelle acceleration, bending moment at the tower bottom, and shear force on the jacket leg. The calculated time-domain results are transformed to frequency domain results using FFT and the environmental load with more impact on each dynamic response is identified. It is confirmed that the dynamic displacements of the wind turbine are dominant in the wave frequency under the incident wave alone condition, and the rotor thrust, nacelle acceleration, and bending moment at the bottom of the tower exhibit high responses in the natural frequency band of the wind turbine. In the wind only condition, all responses except the vertical displacement of the wind turbine are dominant at three times the rotor rotation frequency (considering the number of blades) generated by the wind. In a combined external force with wind and waves, it was observed that the horizontal displacement is dominant by the wind load. Additionally, the bending moment on the tower base is highly affected by the wind. The shear force of the jacket leg is basically influenced by the wave loads, but it can be affected by both the wind and wave loads especially under the turbulent wind and irregular wave conditions.
Green synthesis of iron oxide nanoparticles for biomedical application and environmental remediation: a review
Authors: Akintelu Sunday Adewale , Oyebamiji Abel Kolawole , Olugbeko Seyifunmi Charles , Folorunso Aderonke Similoluwa
Published: October 2021

Ferrous oxide nanoparticles (IONPs) formed from plant materials have been considered as chemically friendly materials and have offered extensive applications. The distinctive features of IONPs, such as biocompatibility, low toxicity, catalytic behavior and multi reaction mechanism, have embodied them as good candidate for several biomedical applications. However, the synthesis of IONPs using plant extracts is gaining high popularity and recommendations because plant extracts could act as reducing and stabilizing agents during the process of synthesis. Furthermore, the biological method of synthesizing IONPs using plant extract offer some benefits, such as being simple, economic, environmentally friendly and require less energy when compared with both physical and chemical methods of synthesis. Hence, this review significantly summarized the synthesis, optimum conditions and characterization techniques involved in the synthesis of IONPs using several plant extracts. Consequently, comprehensive information about the applications of green synthesized IONPs as antimicrobial and anticancer therapeutic agents were well presented. The effectiveness of IONPs in environmental treatment of effluent containing dyes and other toxic agents were also properly discussed.
Variability levels of selected amino acids among mandarins produced in Uruguay
Authors: Rezende Sof�a , Banchero Sabrina , Migues Ignacio , Cesio Mar�a Veronica , Rivas Carlos Fernando , Heinzen Horacio , Besil Mar�a Natalia
Published: October 2021

Nutraceutical properties of mandarins are of great interest to promote their consumption. The occurrence of free amino acids in foods is relevant to assess the nutritional value of it. To learn more about the amino acids� occurrence and variability between species, a targeted metabolomics study in �Ellendale�, �Willowleaf� and �Page� varieties was performed through ion exchange liquid chromatography coupled to tandem mass spectrometry. The studied amino acids were
asparagine, glutamic acid, glutamine, histidine, methionine, phenylalanine, proline, threonine and tyrosine. The difference between two consecutive seasons was evaluated, as well as the influence of fruit maturity of �Page� collected in two periods of 2015. The analytical methodology was validated. The concentration of the compounds through principal component analysis, separated well apart the three cultivars in both harvests, showing a particular profile for each of them. When comparing mature and immature cultivar �Page�, the amino acids with higher levels in mature samples were histidine, asparagine, glutamine and glutamic acid. The profiles were different due to genetic diversity, and the climatic conditions. These results add value to citric production.
Effect of the deformation parameter on the nonrelativistic energy spectra of the q-deformed Hulthen-quadratic exponential-type potential
Authors: Obogo Ushie Patrick , Ubi Ofem Egbe , Edet Collins Okon , Ikot Akpan Ndem
Published: October 2021

In this study, an approximate solution of the Schr�dinger equation for the q-deformed Hulthen-quadratic exponential-type potential model within the framework of the Nikiforov�Uvarov method was obtained. The bound state energy equation and the corresponding eigenfunction was obtained. The energy spectrum is applied to study H2, HCl, CO and LiH diatomic molecules. The effect of the deformation parameters and other potential parameters on the energy spectra of the system were graphically and numerically analyzed in detail. Special cases were considered when the
potential parameters were altered, resulting in deformed Hulthen potential, Hulthen potential, deformed quadratic exponential-type potential and quadratic exponential-type potential. The energy eigenvalues expressions agreed with what obtained in literature. Finally, the results can find many applications in quantum chemistry, atomic and molecular physics.
Optimasi dan uji efektivitas ekstrak Ganoderma lucidum sebagai anti-Helicobacter pylori
Authors: Nisa Intan Chairun , Margalin Brilliant
Published: October 2021

Helicobacter pylori diketahui sebagai penyebab utama tukak lambung dengan melemahkan lapisan pelindung pada lambung dan duodenum. Sejumlah obat anti tukak lambung yang sering digunakan dapat menyebabkan resistensi pada H. pylori. Ganoderma lucidum diketahui dapat menghambat dan mendukung penyembuhan tukak lambung yang disebabkan oleh asam asetat. Akan tetapi, kemampuan G. lucidum dalam menghambat tukak lambung yang disebabkan H. pylori belum banyak diungkap. Penelitian ini bertujuan untuk mengetahui efektivitas ekstrak G. lucidum dalam menghambat pertumbuhan H. pylori penyebab tukak lambung. Penelitian merupakan ekperimental dua faktorial yaitu jenis pelarut fraksinasi dan konsentrasi ektrak G. lucidum. Ekstrak G. lucidum difraksinasi menggunakan dua jenis pelarut yaitu etanol 60% dan akuades. Konsentrasi ekstrak G. lucidum yang digunakan adalah 1, 5, 10, 20, 30 mg/mL. Efektivitas ekstrak G. lucidum diuji dengan metode difusi cakram. Berdasarkan analisis statistik didapat bahwa jenis pelarut berpengaruh terhadap aktivitas daya hambat H. pylori dengan nilai pada pelarut etanol 60% signifikan lebih tinggi dibandingkan akuades. Konsentrasi ekstrak G. lucidum baik etanol maupun akuades berpengaruh signifikan terhadap aktivitas daya hambat. Aktivitas daya hambat tertinggi adalah pada perlakuan ekstrak etanol G. lucidum konsentrasi 20 mg/ml. Kata kunci: akuades; difusi cakram; etanol; Helicobacter pylori; Ganoderma lucidum ABSTRACTOptimization and effectiveness assay of Ganoderma lucidum extract as Anti-Helicobactor pylori. Helicobacter pylori is known to be the main cause of gastric ulcers by weakening the protective lining of the stomach and duodenal. A number of gastric anti-ulcer drugs can cause resistance to H. pylori. Ganoderma lucidum is known to inhibit and support the healing of gastric ulcers caused by acetic acid. G. lucidum's ability to inhibit H. pylori growth has not been revealed much. This research aims to find out the effectiveness of G. lucidum extract in inhibiting the growth of H. pylori which causes gastric ulcers. This study is an experimental two factorial namely the type of fractionation solvent and the concentration of G. lucidum extract. Ganoderma lucidum extract is diffractionated using two types of solvents namely 60% ethanol and akuades. The concentration of G. lucidum extract used is 1, 5, 10, 20, 30 mg/mL. The effectiveness of G. lucidum is tested using the disc diffusion method. Based on statistical analysis found that the type of solvent affects the activity of H. pylori's resistance with a value in ethanol solvents 60% significantly higher than akuades On the other hand the concentration of G. lucidum extract in both ethanol and aquades has a significant effect on the activity of the slave. The highest inhibitory activity is in the treatment of ethanol extract G. lucidum concentration 20 mg / ml. Keywords: aquades; diffusion disc; ethanol; Helicobacter pylori; Ganoderma lucidum
Crystal structure and photochemistry of 5-azacytosine: experimental and theoretical study
Authors: Delchev V.B. , Shterev I.G.
Published: October 2021

The crystal structure of 5-azacytosine was proposed by the X-ray diffraction pattern of the compound and the performed Rietveld analysis. The crystal structure solutions were achieved with the simulated annealing procedure. The model molecule for the procedure was taken from the BLYP/aug-cc-pVDZ optimization of the N1(H) oxo-amino tautomer of the compound. The refined unit cell parameters are: a = 12.82916 Å, b = 9.47282 Å, c = 3.66363 Å, and space group P212121. The studied excited-state reaction paths of the H-detachment processes of two oxo-amino tautomers show a possibility for mutual phototransformation of the two oxo-amino tautomers: N1(H) and N5(H). The driven states of this photoreaction are the 1nσ* and 1πσ* excited states.
Investigation of dihydrogen bond interaction between cycloalkenes and alkali metal hydrides: a DFT approach
Authors: Parimala devi D. , Praveena G. , Jeba Beula R. , Abiram A.
Published: October 2021

In this work, intermolecular dihydrogen bonded interactions between cycloalkenes (cyclobutene (C4H6), cyclopentene (C5H8), cyclohexene (C6H10)) and alkali metal hydrides H—M (M = Li, Na and K) complexes have been studied using B3LYP/6-311++G** method. The calculated structural parameters correlate well with the interaction energies and smallest dihydrogen bonded distance is observed for C4H6⋯HK complexes. Infrared vibrational frequency analysis indicates that significant red and blue shifts are occurring in the C—H and H—M bonds of all the complexes. The analyses of natural bond orbital, topological parameters based on the quantum theory of atoms in molecule and molecular electrostatic potential aids to know the nature of dihydrogen bonded interaction. The result shows that H⋯H interaction is strengthened in the C4H6⋯HK than the other complexes and henceforth H—K interacting complexes have better dihydrogen bonded interaction.
Editorial: Making a Difference in Educational Research
Authors:   Kazan (Volga region) Federal University, Kazan, Russia, Rushby Nick
Published: October 2021

In my last editorial, I addressed the different forms that a scholarly paper might take (Rushby, 2021); in this issue I want to take a more over-arching view of the research process and the integral role of the papers that come out of that process. In doing so I will revisit (without apology because it is important) a tool that I described in an editorial four years ago (Rushby, 2017). A research paper needs to address three questions: • What is already known about this subject? • What does my research add to what is known? • What do I want people to do differently as a result of my research?
A method for evaluating the results of the educational process:
Authors:   Omsk State Technical University, Omsk, Russia, Bokarev Aleksandr , Denisova Elena ,   Omsk State Technical University, Omsk, Russia, Ignatovich Ivan ,   Omsk State Technical University, Omsk, Russia, Khrapsky Sergei ,   Omsk State Technical University, Omsk, Russia
Published: October 2021

The article addresses the problem of evaluating the results of specialists as they graduate from their training. There are difficulties, not only with the decreasing number of students in training courses, but also with inadequate methods for educational management. There is a growing need for managers and subject lecturers to obtain information on the results of specialists’ training and graduation. This article sets out a method for evaluating the results of the educational management using the probability multiplication theorem for dependent events. The study shows that the results of the educational process can - and should - be managed if the results of training and graduation are periodically evaluated. At the same time, the evaluation results are of great value to the university and improve the educational management. They show the scale of the specialists’ training and graduation in relation to their training task and create a data base for subjects enabling appropriate managerial decisions aimed at maximizing approaching the results of the specialists’ graduation to their training task. It is of practical and scientific importance for the permanent staff of vocational educational institutions when developing managerial decisions for qualified specialists’ training, as well as for graduate students and researchers involved in the study of the effectiveness of educational management.
Systematic reviews of in-service training effectiveness. A prior comparative analysis of the terms used
Authors:   University of Bergamo, Bergamo, Italy, Agrati Laura
Published: October 2021

The professional development of teachers has a definite impact on the improvement of the entire educational system (OECD, 2018; Darling-Hammond, 2017). For this reason, the main international organizations - OECD (2013 ), European Commission (2012 ) - ask countries to establish feedback and accountability procedures for in-service training (ITT), for the ‘process by which teachers engage in further education or training to refresh or upgrade their professional knowledge, skills and practices in the course of their employment’ (UNESCO, 2019). Researchers state that here are numerous factors to be considered in carrying out this work: the type and quality of training, school climate, students’ skills, knowledge domain, etc. (Lipowsky & Rzejak, 2015). After a brief presentation of how the most recent systematic reviews on the topic have been conducted (Filges et al, 2019; Egert et al, 2018; Kalinowski et al., 2019), this article presents the results of a study on the terms and constructs in use in the context of the researches into in-service teacher/continuing professional training, impact/effect, and programs/instructions. The data and information collected offer a comparative analysis (Esser & Hanitzsch, 2012), based on systematic reviews (Polanin et al., 2019) and a meta-analysis, useful for setting up further meta-analytical investigations on the topic especially in terms of the disambiguation of terms and the narrowing of the field. The training of in-service teachers in many countries has been made compulsory and structural and is conceived as an opportunity for growth and professional development for the entire school community, and a strategic and functional logic for improving the quality of the school system (Perla, 2019). However, ministries of education do not yet have a univocal model and shared procedures capable of describing and analysing the impact that the training provided has in the terms set out in the European Commission (2020): output - results achieved immediately, i.e. increase in skillsfocus subject to training; outcome - wider benefits for involved teachers - improvement of teaching practices of teachers involved in training; outreach - effects on the institutional and social context of the school where and of the territory within which the teachers involved in the training.
Editorial: Contemporary mission of large universities in teacher education
Authors:   Kazan (Volga region) Federal University, Kazan, Russia, Gafurov Ilshat
Published: October 2021

The role of teacher education in improving the quality of educational systems is constantly increasing. Notably, this particular segment of education has been the focus of educational policy in many countries in recent years (Tatto & Menter, 2020). Teacher education today has a special responsibility, since its main task is to train a new generation of teachers who are able to work in the face of modern challenges and respond quickly and adequately to any external influences (Beauchamp et al., 2015). This requires not only a radical transformation of technology and communication in the transfer of knowledge in the learning process and the formation of a new understanding of a safe environment, but also a serious renewal of the philosophy and theory of education. This will inevitably entail the emergence of new or modernization of existing educational concepts, as well as models and technologies for teacher training (Preston, 2017).
Online mediation in the socialization of children with disabilities: environmental conditions in the Arctic and the North of the Krasnoyarsk Territory
Authors:   Siberian Federal University, Krasnoyarsk, Russia, Smolyaninova Olga , Gruzdeva Ekaterina ,   Siberian Federal University, Krasnoyarsk, Russia, Smolyaninov Artem ,   Siberian Federal University, Krasnoyarsk, Russia
Published: October 2021

The development of online mediation in the Arctic and the Far North of the Krasnoyarsk Territory is necessary because of the increased level of conflict potential in educational institutions and the need to find the most effective methods for resolving conflicts, taking into account the needs of persons with disabilities. This article analyzes the problem of the development of mediation as a tool for resolving conflicts with the participation of children with disabilities, as well as adapting the mediation procedure to a digital format. A content analysis of Russian and foreign practices, demonstrated the insufficient development of inclusive education and the mediation process in our country. Monitoring of school mediation services in the Arctic and northern territories of the Krasnoyarsk Territory confirmed the formalized nature of school mediation services, the lack of training programs for mediators on the basis of higher educational institutions of the Arctic and northern territories, insufficient knowledge of methods of working with ‘special children and an emphasis on preventive measures. An interview was conducted on the organizational system of school mediation services, the identification of conflict-generating factors, ways of resolving conflicts, the readiness of mediation specialists to transition to a digital environment, the adaptation of the mediation procedure to the specific characteristics of children with disabilities and the need to develop a mediation procedure in connection with the natural-climatic factors of these territories. The practical benefit of the study is in promoting the implementation of mediation and online mediation practices in the educational system to resolve conflicts with the participation of children with disabilities, develop a humane attitude towards various categories of the population and establish favorable conditions for learning. The practical use of the research increases due to the scarcity of scientific developments in the field of inclusive education, an alternative and innovative mediation process in the Arctic and Northern territories of the Krasnoyarsk Territory.
MANAGEMENT CONSULTING. DEVELOPMENT PROSPECTS IN RUSSIA
Authors:   Russian Economic University named after G.V. Plekhanov, Samorukov A.P.
Published: October 2021

Management consul ting is one of the fastest growing types of consulting in the structure of domestic services, since most enterprises are faced with the need to change management strategies, adapt to market requirements, as well as deeper implementation of digital technologies in the business processes of enterprises. This article reveals the theoretical foundations of management consulting, gives its classification, characterizes the conceptual apparatus and stages of the consulting process. The analysis and verification of the problems of the development of management consulting in Russia has been carried out. The practice is generalized and the assessment of the prospects for the development of management consulting in Russia is given.
PROBLEMS OF INNOVATION IMPLEMENTATION IN ELECTRONIC BUSINESS
Authors:   Financial University under the Government of the Russia n Federation, Steblyuk I.Yu.
Published: October 2021

The modern development of the Russian economy is characterized by an active increase in the pace of digitalization of economic and social processes, accompanied by an increase in the scale of activities in the field of electronic business and electronic commerce. Nevertheless, today the electronic business of Russia is at the initial stage of its development, which is hindered by a lot of problems existing in this area. The article examines the current trends and factors of e-business development, identifies the main problems of the introduction and development of innovations in e-business in Russia. The study showed that one of the most acute problems in this issue today is the imperfection of Russian legislation, primarily in the field of cybersecurity, which directly affects the effectiveness of innovation in e-business: the pace of innovation in e-business in Russia significantly exceeds the pace of their legislative regulation. In addition, there is a problem of a shortage of professional personnel in the field of innovation in e-business or their insufficient level of awareness and training. At the same time, the problems of lack of qualified personnel in the field of innovation implementation in e-business, insufficient awareness of the personnel of organizations regarding the goals, meaning, results and effectiveness of innovation implementation remain important, which reduces their effectiveness
ENTREPRENEURSHIP AT THE TURNING POINT OF THE SOCIOHISTORICAL PROCESS VECTOR
Authors:   Moscow International University, Salnikova T.S. , Matnenko N.N. ,   Moscow International University
Published: October 2021

The article presents the author’s original concept of choosing from the available alternatives for the development of Russian entrepreneurship in the conditions of a cardinal change in the vector of the socio-historical process, when human civilization and culture are moving into a fundamentally new quality, in comparison with all past eras of the history known in science. The object and subject basis, the main contradiction and the driving forces of this transition are determined, with tracing its direct and inverse connections with the process of formation and development of entrepreneurship, which has an internally contradictory and antagonistic structure. A set of recommendations on the impact of the state and society on entrepreneurship and proposals on the positive impact of entrepreneurship on the state and society have been developed.
PROBLEMS OF ESTIMATING THE DYNAMICS OF THE SHADOW ECONOMY IN THE RUSSIAN FEDERATION
Authors:   branch of the Plekhanov Russian University of Economics in Pyatigorsk, Taran O.L. , Taran I.L. ,   Pyatigorsk Institut (FILIAL) FGAOU VO «North Caucasus Federal University», Berezhnaya O.V. ,   FGAOU VO «North Caucasus Federal University», Ter-Akopov G.N. ,   North Caucasian Federal Research and Clinical Center, Asriev S.V. ,   branch of the Russian Economic University named after G.V. Plekhanov in Pyatigorsk
Published: October 2021

The article reflects the relevance and importance of studying the issues of the scale and types of shadow economic activity in the structure of the national economic system, and also examines the problematic issues of assessing the dynamics of the shadow economy in the Russian Federation. Within the framework of the proposed study, problem areas are outlined in the calculations of the level of the non-observed economy of the Russian Federation, in addition, the study substantiates that available indicator recorded by the Federal State Statistics Service in all regions should be used to assess the shadow economy and differentiate the organizational and legal mechanisms to counter 103 АНАЛИЗ И ДИАГНОСТИКА its development. Will allow ensuring the comparability of calculations between different subjects and will give some universality to the methods of structuring the forms of the shadow economy and the analysis of the dynamics of its scale. Within the framework of the proposed study, the need for a more detailed study of the dynamics of employment in the shadow sector of the economy is determined, on the basis of the study of which it is only possible to judge the scale of production in the shadow sector of the economy.
Comparative Effects of Luteolin and Quercetin on Adipogenesis in 3T3-L1 Cells
Authors: Sakuma Satoru , Yabuuchi Midori , Yoshizumi Ayumi , Okajima Yui , Fujimoto Yohko , Okuhira Keiichiro
Published: October 2021

Purpose: Quercetin has been reported as a more potent inhibitor of fat accumulation than other flavonoids. However, little information is available regarding the strength and mechanism of the repressive action of luteolin on fat accumulation. Therefore, the aim of the present study was to evaluate the comparative effects of luteolin and quercetin on the differentiation of 3T3-L1 preadipocytes into mature adipocytes.
Methods: 3T3-L1 preadipocytes were differentiated by treatment with insulin, dexamethasone, and 3-isobutyl-1-methylxanthine in the presence of luteolin or quercetin. Alterations in triacylglycerol (TG) levels, lipid-filled adipocyte quantity, and the mRNA and protein expression levels of CCAAT-enhancer-binding protein α (C/EBPα) and peroxisome proliferator–activated receptor γ (PPARγ) were measured.
Results: Both luteolin and quercetin reduced TG levels, the number of lipid-filled adipocytes, and the mRNA expression levels of C/EBPα and PPARγ; however, these effects occurred with lower concentrations of luteolin than quercetin.
Conclusions: These results suggest that luteolin may be more potent than quercetin in inhibiting adipocyte differentiation. These effects may be explained by differences in the inhibitory effects of the two compounds on C/EBPα and PPARγ expression. This study suggests that luteolin might be a beneficial dietary supplement for obesity and lifestyle-related diseases.
The effect of different doses of zinc supplementation on nail elements in elite female athletes
Authors: ESKIC GUNAY
Published: October 2021

Background: T he trace elements concentration in metabolically inactive fingernails has been used to monitor the exposure to toxic metals or to assess associations between excess or deficiency of trace elements. Material and methods: T he research protocol was applied to a total number of 20 female volleyball players. The subjects who were randomly allocated into two groups with an equal number of members were administered 220 mg/day (Group 1) and 440 mg/day (Group 2) of zinc sulfat. Results: The result of the analysis of nail samples collected after 2, 3 and 4 weeks of supplementation showed no significant difference between Mg, Ca, Fe, Cu, Se, P and Zn levels between the groups (p > 0.05). It was determined that nail Ca, Fe, and Zn levels in the last week of zinc supplementation increased significantly compared to the level at the beginning of the supplementation in both groups (p < 0.05). Conclusions: It was determined that two different applications significantly decreased Mg, P and Se levels for both groups regardless of the dose difference.
The relationship between motivation, perceived Motivational Climate, Task and Ego Orientation, and Perceived Coach Autonomy in young ice hockey players
Authors: JAKOBSEN ARNE MARTIN
Published: October 2021

Background: This study is grounded in the theory of self-determination, the achievement goal theory, and the theory of perceived motivational climate. The goal of the study was to examine the relationships among perceived coach autonomy, motivation, task and ego orientation, and the perceived motivational climate in young ice hockey players. Material and methods: The participants included 401 ice hockey players aged 14–18 years old. To calculate the power of prediction between the independent variable “perceived autonomy from the coach”, all 6 factors of motivation in the self-determination theory (SDT) and the goal orientation we conducted two path diagrams: one where task environment was the dependent variable and one with ego environment as the dependent variable. Between these factors and goal orientation among the players and the dependent variables, a hierarchical regression analysis was employed. Results: We found that high perceived autonomy support from the coach positively influences motivation in junior hockey players. Players who perceive autonomy support from their coach have a higher chance of scoring highly for autonomic regulation, according to self-determination theory. Conclusions: This probably leads to more task-oriented players who create a more task-oriented environment, hopefully resulting in fewer players dropping out of the sport.
The effect on critical velocity of runnings with change of direction in soccer
Authors: ARI ERDAL , CIHAN HAMIT , CETINDEMIR ABDULLAH
Published: October 2021

Introduction: The aim of this study was to examine relationships between Yo-Yo intermittent recovery level 1 test (YYIR1T) performance and critical velocity determined by test protocols consisting of runs with a change of direction and straight runs. Material and Methods: Twelve young soccer players voluntarily participated in study (age: 17.07±0.24 years, training experience: 8.42±2.50 years, height: 178.58±5.76 cm, weight: 70.67±6.14 kg, body mass index: 22.16±1.59). To determine critical velocity, 6-, 9- and 12-minute runs were performed with maximum effort on a straight-line running track and a running track with a change of direction. The critical velocity was determined by two linear regression models. YYIR1T was performed to determine players’ aerobic endurance. The critical velocity value of the two test tracks was compared by the paired samples T-test. The correlation between test parameters was determined by Spearman’s correlation coefficient. Results: A significant difference between anaerobic distance capacity and the mean running speed of the two test tracks (p<0.05) was found. There was a significant correlation between critical velocity in the straight-line test track and the YYIR1T performance (p<0.05). Conclusions: Consequently, it might be said that runs with a change of direction might increase energy expenditure and anaerobic distance capacity was highly affected by those compared to critical velocity.
Influence of Internet On Tourism Consumer Behaviour: A Systematic Review
Authors: BATİSTA SÁNCHEZ Ernesto , DEEGAN Jim , PÉREZ RİCARDO Elizabeth Del Carmen
Published: October 2021

This paper aims at identifying the state of academic research on the influence of Internet on tourism consumer behaviour. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Methodology was used to select the data and the analysis was complemented with bibliometric indicators. This research identified 83 relevant articles related to the influence of Internet on tourism consumer behaviour. The systematic review of the academic literature demonstrated that the Internet influences tourism consumer behaviour during the entire travel cycle stages. During the pre-consumption stage, motivations and decision-making process are highly influenced by several online sources. However, in the case of expectations, limited research was found on this area. Value co-creation behaviour is influenced by Internet during the final two stages of the travel cycle stages. Finally, evidence suggests that loyalty is influenced during the consumption and post-consumption stages. These results provide a categorized analysis of the influence of Internet on the behavioural variables during each of the travel cycle stages for academicians and practitioners. The analysis was conducted on two major academic databases: Web of Science Core Collection and Scopus. The inclusion of other data sources and other types of secondary data could complement these results