bluuebunny/crossref_metadata_2025 huggingface dataset:
Nikolaevo-Otradnoye II—A New Early and Middle Paleolithic Site in the Northeastern Azov Region
Authors:   Donetsk State University, Kolesnik A. V. , Zorov Y. N. ,   State Autonomous Institution of Culture of the Rostov Region "Donskoe Nasledie", Danilchenko A. Y. ,   Kamensk Museum of Decorative, Applied and Folk Art, Titov V. V. ,   Southern Scientific Center of the Russian Academy of Sciences, Konstantinov E. A. ,   Institute of Geography, Russian Academy of Sciences, Frolov P. D. ,   Geological Institute, Russian Academy of Sciences, Sychev N. V. ,   Institute of Geography, Russian Academy of Sciences
Published: October 2023

Представлены материалы нового памятника палеолита, обнаруженного в 2020 г. на правом берегу Миусского лимана недалеко от места впадения реки в Таганрогский залив Азовского моря, на южной окраине с. Николаево-Отрадное Неклиновского р-на Ростовской обл. Зачисткой участка берегового обрыва высотой до 10 м выявлена сложная стратиграфия субаквальных и субаэральных пород позднего и среднего плейстоцена, определены горизонты с каменными изделиями и костями ископаемых животных. Установлено, что культурные остатки, найденные в береговом обнажении и в стратиграфическом разрезе, включают археологические материалы раннего и среднего палеолита. Ранним этапам заселения Северо-Восточного Приазовья и Нижнего Подонья соответствуют изделия раннего палеолита, залегавшие в субаквальных отложениях слоев 5 и 6 (МИС 9-11, ок. 420-270 тыс. л.н.). Сильно окатанную, патинизированную коллекцию составляют нуклевидное изделие, скребла различной типологии, долотовидное орудие, отщепы и чешуйки. Этот комплекс дополняет известные раннепалеолитические ансамбли изучаемого региона, в т.ч. синхронные. Наибольший научный интерес вызывает среднепалеолитическая индустрия слоя 4 под каменской (?) почвой (слой 3, МИС 7). Комплекс состоит из диагонального скребла и чешуйки, обнаруженных в разрезе, а также радиальных и леваллуазских нуклеусов, различных скребел, частично двустороннего орудия, сколов и чешуек — в береговом обнажении. Технико-типологические характеристики (прежде всего леваллуазская технология) и хронологическая оценка неокатанного патинизированного комплекса позволяют отнести его к раннему среднему палеолиту юга Русской равнины. Сделан вывод о том, что культурные остатки раннего среднего палеолита возрастом 243-191 тыс. л.н. обнаружены в регионе впервые; заполняет географическую лакуну в раннем среднем палеолите региона; на соседних территориях такие комплексы известны с конца XX в.
A Complex of Stratified Upper Paleolithic Sites in the Foothills of the Northern Tien Shan: General Data and Research Perspectives
Authors:   Institute of Archaeology, Russian Academy of Sciences, Ozherelyev D. V. , Mamirov T. B. ,   Margulan Institute of Archaeology
Published: October 2023

В статье рассматриваются ключевые культурные тенденции и события в верхнем палеолите предгорий Северного Тянь-Шаня (Казахстан, Заилийский Алатау). Кратко характеризуется история изучения палеолита на территории Юго-Восточного Казахстана. Описываются физико-географическое положение региона, геоморфологическое расположение стоянок и особенности осадконакопления, повлиявшие на сохранение остатков поселений in situ. Обозреваются археологические материалы опорных памятников верхнего палеолита, среди которых многослойные стоянки Майбулак, Рахат и Узынагаш-1, -2. Согласно характеристикам каменного инвентаря и абсолютным датам, стоянка Майбулак заселялась перманентно на протяжении раннего, среднего и, вероятно, позднего этапов верхнего палеолита. Наиболее яркие материалы относятся к первому. Доказано, что каменные индустрии раннего верхнего палеолита содержат ориньякоидный компонент и находят определенные аналогии в некоторых одновозрастных культурах западной части Евразии. На многослойном памятнике Рахат зафиксированы свидетельства заселения стоянки в конце ранней поры верхнего палеолита, на среднем его этапе и в начале позднего. Здесь прослеживается развитие верхнепалеолитических культур на протяжении ~30-23 тыс. кал. л.н. На стоянке выявлены ориньякоидная индустрия, культура среднего периода верхнего палеолита с каменными остриями, близкими к микрограветтийским, и комплекс с геометрическими формами в виде треугольников со скошенным основанием. Впервые кратко описываются результаты раскопок и перспективы исследования новых стоянок Узынагаш-1, -2, относящихся к поздним этапам раннего верхнего палеолита. В заключении сделан вывод, что верхнепалеолитические культуры (или индустрии) предгорных районов Северного Тянь-Шаня представляются оригинальными и самобытными, в то же время в их развитии прослеживается единый вектор в рамках верхнего палеолита Западной Евразии.
Morpho-Stratigraphy, Sedimentology, and Radiocarbon Chronology of Suyanggae Sites, Focusing on Loc. VI, South Korea
Authors:   Korea Institute of Geoscience and Mineral Resources, Kim J. Y. ,   Institute of Korean Prehistory, Lee Y. J. ,   Institute of Korean Prehistory, Woo J. Y. ,   Institute of Korean Prehistory, Lee S. W. ,   Institute of Korean Prehistory, Suh H. S. ,   Korea Research Institute of Standards and Science, Kim K. J. ,   Korea Institute of Geoscience and Mineral Resources, Yang H. J. ,   Korea Astronomy and Space Science Institute, Lee K. W. ,   University of Wyoming, Choi W. H. ,   Convergence Technology Research Institute for Cultural Heritage, Oh K. C. ,   Institute of Quaternary Environment
Published: October 2023

Реконструируются процессы формирования отложений палеолитических стоянок Суянгэ, приуроченных к речным террасам на р. Намханган, нижний уровень которых выше современного дна реки. В качестве основных поверхностных отложений стоянки Суянгэ, пункт VI выделены аллювиальные и делювиальные, а также палеопочвы. На основе изучения представительных профилей стоянки определено, что нижнюю часть отложений составляют пески и супеси, среднюю и верхнюю — преимущественно пески и обводненные илы с редкими прослоями красновато-коричневых склоновых илов, а также угловатые гальки и валуны. В морфостратиграфии террасы стоянка Суянгэ, пункт VI находится на низкой (второй) речной террасе. Подробно рассмотрена хронология образования отложений стоянки. Процесс формирования отнесен к последнему ледниковому периоду. По радиоуглеродным датам, определенным по углю со стоянки Суянгэ, пункт VI, устанавливается возраст культуросодержащих слоев. Слой 2 сформировался в период позднего верхнего палеолита, а слои 3 и 4 — во время раннего верхнего палеолита. Представлен археологический комплекс стоянки Суянгэ, пункт VI: для культуросодержащего слоя 2 характерны многочисленные микропластины (ок. 20 тыс. л.н., последний ледниковый максимум), а для слоев 3 и 4 — острия с черешком и пластины (36-42 тыс. л.н., середина последнего ледникового периода). Особо отмечены галька с выгравированными линиями, выявленная в осадочной толще флювиального происхождения, и галька с выгравированной личиной из обводненных илов. Находки интерпретируются как проявления символического поведения человека.
Diem Cave: A Stratified Late Pleistocene and Early Holocene Site in Northern Vietnam
Authors:   Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Kandyba A. V. , Nguyen Khac Su ,   Institute of Archaeology, Vietnam Academy of Social Sciences, Chekha A. M. ,   Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Nguyen Gia Doi ,   Institute of Archaeology, Vietnam Academy of Social Sciences, Le Hai Dang ,   Institute of Archaeology, Vietnam Academy of Social Sciences, Nguyen Anh Tuan ,   Institute of Archaeology, Vietnam Academy of Social Sciences, Derevianko A. P. ,   Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences
Published: October 2023

В статье представлены результаты изучения пещерного памятника Зием, материалы которого относятся к поздним этапам палеолита Вьетнама. Приводится описание литологических подразделений и культуросодержащих слоев. Подробно рассматриваются археологические коллекции, в которые входят каменные и костяные артефакты. Выделены морфологические особенности каменных изделий; отмечено наличие орудийного компонента, включающего суматралиты, каменные топоры, костяные орудия, а также украшений и проявлений обряда погребения, характерных для культурно-хронологической эпохи хоабинь. Дается характеристика антропологического материала. В самом древнем захоронении были обнаружены кости скелета, находившиеся в анатомическом порядке, в других — скопления раздробленных и обожженных остеологических остатков. Доказано, что возраст трех нижних культурно-литологических слоев соответствует плейстоцену; находки из них определены как хоабиньские. Верхний слой относится к голоценовой эпохе, а содержащиеся в нем артефакты — к культуре дабут. Согласно результатам микроморфологических и стратиграфических исследований, осадконакопление двух хоабиньских слоев происходило в условиях влажного климата, одного — в более сухих природных обстановках. На основании данных абсолютного датирования появление хоабинской культуры на территории Северного Вьетнама можно отнести к периоду до 23 тыс. л.н. Сделан вывод об активном освоении данного района древними человеческими популяциями в отдельные периоды плейстоцена.
A Case of Systemic Connective Tissue Disorder in a Pazyryk Male from the Altai Mountains
Authors:   Novosibirsk State Medical University, Aristova E. S. , Chikisheva T. A. ,   Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Pozdnyakov D. V. ,   Institute of Archaeology and Ethnography, Siberian Branch, Russian Academy of Sciences, Elyasin P. A. ,   Novosibirsk State Medical University
Published: October 2023

Проведено комплексное антропологическое и палеопатологическое обследование скелета мужчины из погр. 1 кург. 1 могильника Ак-Алаха-1 пазырыкской культуры. Археологический контекст погребения свидетельствует о довольно высоком социальном статусе этого человека. Методом антропологической реконструкции восстановлена его внешность. Сочетание краниометрических и соматологических признаков позволяет сделать вывод о принадлежности мужчины к брахикранному европеоидному антропологическому типу. Подобный комплекс черт является базовым компонентом в антропологическом составе мужского населения Волго-Уралья и территории Западного Казахстана в VI-III вв. до н.э. Установлено, что мужчина страдал системным заболеванием соединительной ткани, в результате которого патологический процесс захватил практически все отделы скелета. Дано подробное описание его состояния, т.к. обнаруженная картина проявлений соединительнотканной деструкции уникальна. Комплекс выявленных патологий анатомических структур скелета позволяет диагностировать заболевание, которым страдал погребенный, как диффузный идиопатический скелетный гиперостоз. Он мог быть вызван серьезными нарушениями метаболических и эндокринных процессов. Судя по антропологическому типу мужчины, Горный Алтай не был регионом, где он родился и к условиям которого был адаптирован генетически. Возможно, поэтому его ревматологическое заболевание имеет такой масштабный генерализованный характер. Кроме того, оно усугублено поражением поясничного отдела позвоночника и костей таза остеопорозом 4-й степени и тяжелой травмой костей плечевого пояса.
Mapping the Research Landscape of Organizational Climate and Performance Using Bibliometric Analysis
Authors: Amalou S.I. , Brahimi B.
Published: October 2023

This study aims to address the limited understanding of organizational climate and performance by conducting a comprehensive bibliometric analysis of scholarly publications. The methodology involves analyzing publications using bibliometric techniques and VOSviewer. The results indicate that organizational performance, employee engagement, job satisfaction, leadership, and leadership culture are prominent topics within the field. The top five countries in terms of published documents and citations are the USA, India, the UK, Australia, and Malaysia. Recent publications have prioritized topics such as quality of work life, innovation, productivity, well-being, organizational commitment, work engagement, and corporate social responsibility. This study provides valuable insights for researchers, practitioners, and organizations to improve employee performance and productivity. The significance of this work lies in its ability to inform future research directions and guide collaboration efforts. Ultimately, this study advances the understanding of organizational climate and performance with practical implications for various organizational settings.
Identification of Possible Estimates Areas for Parameters of Fully connected Linear Regression Models
Authors: Bazilevskiy M.P.
Published: October 2023

This article is devoted to the study of fully connected linear regression models, in which the observed variables contain errors, and the pairs of true variables are interconnected by linear functional dependencies. When estimating fully connected regressions, the main problem is the correct choice of the error variances ratios of the variables. If the choice is made incorrectly, then the fully connected regression estimates will be biased. The purpose of this article is to find the dependence of main parameters possible estimates areas on the possible error variances ratios of the variables in fully connected regressions. For the first time, with the help of matrix algebra elements, the inverse problem is solved - analytical dependences of the error variances ratios of variables on the main parameters are obtained. These dependences make it possible to identify the parameters possible estimates areas in which the necessary condition for the extremum of the objective function is satisfied. It is proved that, under certain conditions, for any error variances ratios of the variables, the parameters estimates always lie inside an open convex polygon located only in one of the orthants of the multidimensional space. In this case, the signs of the estimates always agree with the signs of the corresponding correlation coefficients. A numerical experiment was carried out, confirming the correctness of the results obtained.
Evaluation of the effectiveness of the electronic textbook in mathematical disciplines using the questionnaire of teachers and students
Authors: Martyushova Y.G. , Naumov A.V.
Published: October 2023

The article presents the results of a sociological study aimed at assessing the effectiveness of the use of learning management systems (LMS) in a mixed form of conducting educational activities in mathematical disciplines with face-to-face seminars and lectures and organizing the independent work of students of technical specialties of the university using the LMS. The research is based on the results of a pedagogical experiment conducted in the spring semester of 2022/2023 on the introduction of an electronic textbook into the educational process at the Moscow Aviation Institute on the course "Theory of the function of a complex variable" using the distance learning system CLASS.NET. The studies are carried out by interviewing students and teachers participating in the pedagogical experiment. The most popular functions of an electronic textbook by teachers and students have been identified.
El problema del lenguaje y la redacción jurídica en los escritos judiciales
Authors: Misari Torpoco David Efraín , Bajonero Manrique Mary Isabel
Published: October 2023

El presente artículo tuvo como objetivo analizar el problema del lenguaje y la redacción jurídica en los escritos desde una perspectiva ortográfica y gramatical que varios abogados —en la actualidad— parecen haber olvidado. Asimismo, establecer las diferencias que existen en los cursos de Lenguaje Jurídico y Redacción Jurídica, puesto que muchos abogados consideran que es lo mismo o que solo se deben redactar plantillas y esto no es así. En tal sentido, se revisó información y bibliografía especializada sobre estas materias con el fin de entender esta problemática y saber diferenciar ambas materias. Finalmente, se concluye que los abogados deben aprender a redactar sus escritos no solo desde el enfoque procesal, sino de manera elemental y obligatoria, desde el enfoque ortográfico y gramatical, puesto que varios desconocen las reglas actuales de la ortografía.
A Case Report of Pulpitis Leading to Septic Shock, along with a Series of Cases
Authors: CNV Akhila , Tirandas Ram , Kirthi C.
Published: October 2023

Among the diseases of oral cavity, dental caries is the most common microbial diseases affecting the individual’s teeth globally along with the periodontal disease. There could be various reasons for the delay of the treatment for dental caries which includes socioeconomic status, lack of awareness about dental diseases and dental treatments. Life style habits also play a prominent role. Delay of dental caries treatment would lead to pulpitis. Here we present a case report of a 62-year-old male patient with chronic irreversible pulpitis in relation to 36. Patient had a history of smoking and chewing paan. After a month patient died due to septic shock. We also present a few case reports of pulpitis progressing to space infections. It has been documented in the literature that, individuals with systemic diseases such as diabetes mellitus, hypertension, cardiovascular disease etc are having highest morbidity and mortality due to dental sepsis. Along with case reports in this article, we are going to make a sincere effort to provide complications of pulpitis. Thus, it would help in educating general public, budding dentists and clinicians in spreading the awareness about pulpitis and its sequeale.
An An Overview of the Treatment of Non-Hodgkin Lymphoma with The Novel Cellular Therapies: CAR-T and Bispecific Monoclonal Antibodies
Authors: Tucker David , Thiebaud Christine
Published: October 2023

The management of non-Hodgkin lymphoma (NHL), including refractory and relapsed high grade and low-grade NHL has been significantly improved in recent years with the development of cellular therapies which harness the powerful anti-cancer effects of the immune system. These include the ground-breaking and now established technology of chimeric antigen receptor cell therapy as well as the promising new range of bispecific monoclonal antibody therapies. This article will give a summary of the currently available cellular and bi-specific antibody therapies for the treatment of NHL in licenced use and clinical trials, including an overview of their proven efficacy and characteristic side-effect profiles which distinguish them from conventional immunochemotherapy. The relative strengths and weaknesses of these comparable therapies will also be discussed together with consideration of where they may fit into the treatment sequence of NHL in the future. The article will also address the challenges of delivering these innovative technologies in different healthcare settings and how they may alter the future of therapy for patients with this form of cancer.
Green Innovation: Trend Research Using Bibliometric Analysis
Authors: Nuryakin Nuryakin
Published: October 2023

Research aims: This study aims to explore and analyze research trends in green innovation. A literature review was used in this study by conducting a bibliometric analysis of green innovation by measuring research trends on green innovation in the last five years. This study also performed descriptive data and analysis on research trends and proposed an agenda for further studies on green innovation. Design/Methodology/Approach: This study approach carried out bibliographical analysis by taking the Scopus Database. Then filtering research articles was carried out in the 2019 – 2021 period. Bibliometric analysis techniques, citation analysis, and co-citation analysis were also conducted.Research findings: This study revealed the nature and direction of research that the green innovation field has undertaken over the past five years. Five clusters existed as themes that appeared in the green innovation literature.Theoretical Contribution/Originality: The theoretical implications of this study provide several important arguments for contributions to the field of green innovation and also contribute to several studies, journals, and institutions that have established studies in this field. Practitioners/Policy Implications: This study contribution to the most influential authors, institutions, and countries related to research on green innovation with possible future research directions.Research Limitations/Implications: This study has provided valuable opportunities to focus on studies only within the scope of green innovation. This study also has contribution to knowledge by considering suggestions for further research.
Enamel surface roughness evaluation after debonding and residual resin removal using four different burs
Authors: Vanya Rapeti Madhu , Chirla Anil , Digumarthi Uday Kumar , Karri Tarakesh , Radhika Bommareddy , Manojna Sanapala
Published: October 2023

: There is a risk of damaging the enamel surface and changing its original morphology during orthodontic bonding and debonding procedure. Research on better adhesive removal methods which can effectively remove the residual resin and restore it best, to its original form are continuing till now. Studies have shown that Stain buster bur creates a smooth enamel surface close to natural enamel when compared to other polishing systems. Recently a new bur called Adhesive Residual Removal bur was introduced by Dentarum company to achieve a smooth enamel finish after debonding. In this study I have compared the enamel surface roughness after debonding and polishing with 4 different polishing burs.

The objective of this study is to compare and evaluate enamel surface roughness after debonding and evaluated using four different finishing and polishing systems.

After debonding adhesive resin is removed from the buccal surface of 80 premolars. Based on the Bur used for polishing the tooth surface it is divided into four groups of 20 each. Group 1-Tungestine carbide system, Group 2-Enhance finishing and polishing system, Group 3-fiber reinforced stainbuster bur, and Group 4- adhesive residual remover bur. Quantitatively measurement was done with the help of surface roughness tester and qualitative measurement was done using scanning electron Microscope (SEM).

Highest post-polishing roughness was observed in tungsten carbide bur (1.37 μm) followed by enhance pogo bur (1.05 μm), adhesive residual remover bur system (0.83 μm), and Stainbuster bur (0.72 μm) (p value < 0.05).

The smoothest enamel surface was produced by Stainbuster bur that was close to the natural enamel followed by Adhesive residual remover bur, Enhance system, and tungsten carbide bur.
A Comparative evaluation of stress distribution in bone and mini-implant during en-masse retraction of anterior teeth in maxilla using forces from anchorage units (mini-implants and molar hook) to both canine hook and arch wire hook. An FEM study
Authors: Younus A Abrar , Divya Sri M. , Navya P. , Sasidhar Y. N. , Sudheer Som , Aymen Uroosa
Published: October 2023

The study aimed to compare and evaluate the stress that was distributed around mini-implant, molar hook and anterior dentition during its en-masse retraction from both canine hook and arch-wire hook.

Four FEM models of maxilla were created to carry out en-masse retraction of the anterior teeth using forces from mini-implant and molar hook to both arch-wire hook and canine hook. The force of 200 grams was applied with Ni-Ti closed coil spring in all four models to carry out anterior teeth retraction. Stress distribution were then analyzed.

The mini-implant group showed higher stresses on the implant when compared to the molar hook group. The molar hook groups showed more stress on the dentition than that of the mini-implant group. The models where the arch-wire hook used for retraction showed less stress values on the bone, teeth, dentition, PDL when compared with that of the canine hook.

The arch-wire hook can be considered a better option than the canine hook. When forces were applied to the arch-wire hook lesser stresses were seen on bone, teeth, dentition, and PDL. The implant-supported group showed lesser stress values on teeth when compared with that of the molar hook group.
Temporary anchorage devices-steering the treatment of borderline orthognathic case to an orthodontic approach
Authors: Ramana Ramya Shree Narayana Iyer , Chandrashekar B S  , Mahesh CM  , Ansari Nishan , Raju Aravind S , Reddy Vinay P
Published: October 2023

Orthodontics as a specialty deals with various skeletal and dental malrelations. But, the extent to which the case can be treated with a pure orthodontic approach with the use of fixed appliances was limited. With the advent of temporary anchorage devices, our horizons have broadened and these “WONDER SCREWS” have allowed us to tackle more complicated cases while avoiding surgeries. The skeletal anchorage system has revolutionized the way we address different malocclusions. This case report is aimed at showcasing the successful management of the spaces required to improve the esthetics and function of an adult male through the simultaneous retraction and intrusion of the whole anterior segment. 2 The treatment objectives were achieved through the retraction of the maxillary anteriors using TADs as anchorage and intrusion using the TADs.
Surgical growth modulation for mandibular retrognathism: A case report
Authors: Kamboj Ashish , Chopra SS , Sinha Nishant , Angrish Paras , Andhare Pushkar
Published: October 2023

A case of 18-year-old female presented with retrognathic mandible having skeletal class II malocclusion, exhibiting convex profile, deep mentolabial sulcus, class II molar, and canine relation bilaterally with proclined maxillary incisors, increased overjet and 100% deep bite. The case had a severe ABO discrepancy index. The leveling and alignment of dental arches were achieved by sequential archwire placement using 0.022” MBT PEA. After leveling and alignment stage, the case was assessed for surgical growth modulation using intra-oral distractors. After necessary planning the case was operated for bilateral sagittal split osteotomy and placement of intra-oral distractors. A standardized protocol was followed for the activation of distractors. Two weeks post distraction the case was reassessed for skeletal changes achieved, followed by settling of occlusion and removal of intra-oral distractors. Skeletal class I bases with improvement in vertical proportions was observed on completion of treatment. This case report suggests that in a patient with mandibular retrognathism and nearly exhausted growth potential, orthodontic treatment in conjunction with meticulously planned and executed mandibular distraction osteogenesis may be effective in achieving aesthetic enhancement and improved stomatognathic function.
Unilateral intrusion of extruded upper molar with use of transpalatal arch – A case report
Authors: Priya Parul , Kumar Mukesh , Goyal Manish , Kumar Sumit , Agarwal Yash
Published: October 2023

Loss of tooth in either arch result in over eruption of antagonist tooth which eliminates the vertical space needed for tooth substitution or placement of a prosthesis. Conventional methods with miniscrew anchorage (TADs) demonstrated excellent results Although, they rely on patient compliance for success due to oral hygiene and bone quality. In this case, to overcome it, a modified transpalatal (TPA) has easily intruded maxillary molars during orthodontic treatment. After gaining the vertical spaces, natural tooth substitution is a better option than conventional prosthesis in terms of alveolar bone support and oral hygiene.
Comparison of king vision video laryngoscope versus mccoy laryngoscope for endotracheal intubation in patients with immobilized cervical spine
Authors: Yadav Jitendra Kumar , Harshwal Raj Kumar , Meena Savita , Sharma Neelu , Sharma Sukirti , Abhay Jain Prashant
Published: October 2023

Background: Objective of this study was to compare King vision video laryngoscope versus McCoy laryngoscope for endotracheal intubation in patients with simulated immobilized cervical spine in terms of mean intubation time and number of attempts and successful intubation. Methodology: This was a prospective randomized study of 70 patients of ASA Grade I or II and aged 18- 60yrs, who underwent elective surgery under general anaesthesia. Intubation was done with either King Vision video laryngoscope (channelled blade) [Group A] or McCoy laryngoscope [Group B] after immobilizing the cervical spine using a cervical collar. We compared the mean intubation time, success rate and intubation difficulty using the Intubation Difficulty Score (IDS), glottic visualization using POGO score, hemodynamic parameters and complication if any. Results: Both the groups were comparable regarding the demographic variables such as age, sex, weight and ASA class. The mean intubation time of patients in Group A was significantly less (16.57 ± 4.11 seconds) than Group B (20.14 ± 5.72 seconds) (P= 0.004). IDS and POGO scoring were found significantly better in group A as compared to group B. But intubation success rate was 100% in both groups. Hemodynamic parameters and complications were also comparable. Conclusion: King Vision video laryngoscope is found superior to the McCoy laryngoscope if cervical immobilization is anticipated in terms of ease of intubation and glottic visualization.
Comparative study on ELISA, CLIA and rapid diagnostic test in detecting HCV infection in blood donor at a tertiary care center
Authors: Preethi M. , Saisudha M. , Subhashini P. , P. R Resmi
Published: October 2023

Background: The prevalence of blood screening assays for hepatitis C infection among blood donors remains comparatively low in line with WHO guidelines, especially when compared to developing nations. Various methodologies, such as ELISA, immunochromatography assays, RIBA, HCV RNA PCR, and CLIA, are employed to detect anti-HCV IgG antibodies in all patients with HCV infection. However, there is a significant scarcity of comparative data available regarding the evaluation of HCV infection screening among CLIA, ELISA, and RDT methods in their ability to detect anti-HCV antibodies effectively. This gap in knowledge highlights the need for further research and analysis in this critical area of healthcare. In this study we evaluate the technical performance between ELISA, CLIA and RDT in detection of HCV infection. Materials and method: A cross-sectional study was carried out, involving 70 blood donor samples. Subsequently, the samples were subjected to screening for Anti-HCV antibodies using three different methods: RDT, CLIA, and ELISA. The results obtained from these screenings were duly recorded. Results: Among the 70 patients included in the study, 63 (90%) were male, and 7 (10%) were female. The following performance metrics were calculated for each method where CLIA shows 100% sensitivity, Specificity 98%, PPV 100%, NPV 98.9%, Accuracy 100%, Kappa coefficient 0.932, p-value <0.001, in case of ELISA: Sensitivity 97.6%, Specificity 99.2%, PPV 100%, NPV 97.1%, Accuracy 99%, Kappa coefficient 0.97, p-value <0.001. followed by RDT: Sensitivity 89%, Specificity 87.9%, PPV 100%, NPV 90.2%, Accuracy 96%, Kappa coefficient 0.59, p-value <0.001. These results provide valuable insights into the performance of each method in screening for HCV antibodies, with CLIA and ELISA demonstrating higher sensitivity, specificity, and overall accuracy compared to RDT. Conclusion: In conclusion, the study suggests that the CLIA screening method for detecting HCV infections is considered superior to both ELISA and RDT in a Tertiary care center.
Seizure of digital footprints from the Internet and their use in evidence: criminal procedural aspects
Authors:   Togliatti State University, Gambarova E. A.
Published: October 2023

Currently, the amount of information that Internet users post on it and exchange with each other is increasing. Under certain conditions, this information, can become forensically significant and can be used as evidence in the future. The issue of seizure and procedural recording of such information is not regulated by current legislation, which makes it difficult to use this information as evidence. The purpose of the study is to identify specific features of digital information, special aspects of the process of proof using digital information and digital footprints within the framework of the current criminal procedure legislation. The author considers the information obtained from social networks in the context of digital footprints and digital evidence in criminal procedure. The signs of digital (electronic) evidence have been systematized. The author carried out an analysis of the provisions of Art. 74 of the Criminal Procedure Code of the Russian Federation, as well as of modern scientific approaches to understanding the system and form of evidence in criminal procedure. Having studied law enforcement practice, the author concluded that the existing legal regulation of the use of digital (electronic) evidence in criminal procedure is not effective enough. The analysis of legislation and law enforcement practice regarding the use of digital footprints in evidence allowed formulating several proposals to improve the norms of criminal procedure legislation of the Russian Federation. In particular, the author proposed to enshrine the definition of digital document in the Criminal Procedure Code of the Russian Federation, expand the list of investigative actions, and specify a separate investigative action aimed at detecting digital footprints and recording digital information.
Study on the influence of social support on the effect of science education in rural primary schools
Authors:   Mudanjiang Normal University, Yu Haiying , Cui Yushan ,   Mudanjiang Normal University, Fu Haifan ,   Dalian Changxing Island (Economic) Technical Development Zone Xingang Primary School
Published: October 2023

This paper analyses the influence of different social support on the effect of science education in rural primary schools, based on the data of rural primary school teachers in 5 re¬gions of Heilongjiang Province in China. The study found that the independent effects of the five social supports such as economic support, the support of science education venues, the guidance of science education and teaching on-site, improvement training of science teacher quality, serve as a science education counsellor on the effect of science education in rural primary schools were significant. The improvement training of science teacher quality and the guidance of science education and teaching on-site still has a great influence on the effect of science education in rural primary schools under the background of different school characteristics, and under sufficient and insufficient capital of science teaching. However, the impact of economic support, the support of science education venues, serving as a science education counsellor is not significant. Therefore, in order to better provide high-quality social support for science education in rural primary schools, a multi-subject science education alliance, led by the county educational administrative departments, should be established to improve coordination and matching degree of social support resource. A science education demand evaluation system, should be established in rural primary schools, to enhance the accuracy of social support services. The quality improvement of science teachers should be taken as the core of social support to clarify the direction of social support.
Development and airworthiness certification of state of art additively manufactured AlSi10Mg mission critical selector valve body part for aerospace
Authors:   RCMA (F&F), CEMILAC, Defence R&D Organization, Vignesh P. , Praveen K. V. ,   RCMA (F&F), CEMILAC, Defence R&D Organization, Krishnakumar S. ,   RCMA (F&F), CEMILAC, Defence R&D Organization, Bhuvaneswari M. Ch. ,   RCMA (F&F), CEMILAC, Defence R&D Organization, Kale Sh. Sh. ,   RCMA (F&F), CEMILAC, Defence R&D Organization, Ram Prabhu T. ,   RCMA (F&F), CEMILAC, Defence R&D Organization
Published: October 2023

Aerospace applications can benefit from additive manufacturing (AM), which is highly advantageous for prototyping and rapid manufacturing. It also offers cost and weight savings, as well as integrated design capabilities. As of now, there are only a few AM standards available, many materials and equipment are involved, resulting in many variables that hinder certification and adoption. As a result, nonstandard testing is making AM in the airborne materials less appealing due to its costly and time-consuming nature. The main objective of this work is to manufacture the Selector Valve Body parts of military and civil aircraft through Laser Powder Bed Fusion (LPBF) process using AlSi10Mg powder. Further, this paper has been carried out the metallurgical properties, non-destructive and destructive testing as well as the clear explanation about the certification procedures. Moreover, this underscores the need for the developing guidelines and standards that cover all aspects of manufacturing from design to manufacturing to operation. A comprehensive analysis from liquid penetration test shows defects are within the permissible level. In addition, it exhibits higher yield strength, ultimate strength, and elongation of (259±4), (323±4) MPa, and (12.5±1.5) % respectively, along with factual evidence that the precipitation hardened AlSi10Mg indigenously developed and produced is equal in properties to the equivalent precipitation hardening aluminium alloys produced by internationally renowned manufacturers.
The effect of strain rate on mechanical properties and fracture mode of the AZ31 alloy and commercially pure magnesium pre-exposed in a corrosive medium
Authors:   Togliatti State University, Merson E. D. , Poluyanov V. A. ,   Togliatti State University, Myagkikh P. N. ,   Togliatti State University, Merson D. L. ,   Togliatti State University
Published: October 2023

Magnesium alloys are promising materials for aviation, automotive engineering, and medicine, however, due to the low resistance to stress corrosion cracking (SCC), their wide application is limited. To create alloys with high resistance to SCC, a comprehensive study of this phenomenon nature is required. Previously, it was suggested that diffusible hydrogen and corrosion products formed on the magnesium surface can play an important role in the SCC mechanism. However, the contribution of each of these factors to the SCC-induced embrittlement of magnesium and its alloys is understudied. Since the influence of diffusible hydrogen on the mechanical properties of metals increases with the strain rate decrease, the study of the strain rate sensitivity of the SCC-susceptibility of magnesium alloys is a critical task. In this work, the authors studied the effect of the strain rate in the range from 5·10−6 to 5·10−4 s−1 on the mechanical properties, the state of the side and fracture surfaces of the as-cast commercially pure magnesium and the AZ31 alloy before and after exposure to a corrosive environment and after removal of corrosion products. The study identified that the preliminary exposure to a corrosive medium leads to the AZ31 alloy embrittlement, but does not affect the mechanical properties and the fracture mode of pure magnesium. The authors found that the AZ31 alloy embrittlement caused by the preliminary exposure to a corrosive medium appears extensively only at the low strain rate and only if the layer of corrosion products is present on the specimens’ surface. The study shows that a change in the strain rate has little effect on the mechanical properties of pure magnesium. The authors concluded that the main cause of the AZ31 alloy embrittlement after soaking in a corrosive medium is the corrosion products layer, which presumably contains the embrittling agents such as hydrogen and residual corrosive medium.
Psikolojik Dayanıklılık ile Öznel İyi Oluş İlişkisi ve Benlik Saygısının Aracı Rolü
Authors: Çelebi Muhammet Ali
Published: October 2023

Bu çalışmada, psikolojik dayanıklılığın öznel iyi oluşa etkisi ve bu ilişkide benlik saygısının rolü bir aracılık modeli kapsamında araştırılmıştır. Araştırmanın örneklemini Konya’da özel bir şirkette çalışan 236 kişi oluşturmuştur. Katılımcılardan anket aracılığıyla toplanan veriler çeşitli istatiksel analizlere tabi tutulmuştur. Korelasyon analizi sonucunda psikolojik dayanıklılık, öznel iyi oluş ve benlik saygısı değişkenleri arasında pozitif ilişkiler bulunmuştur. Araştırmadaki hipotezlerin test edilmesi için yapısal eşitlik modeli analizi uygulanmıştır. Elde edilen ilk bulgu; psikolojik dayanıklılığının öznel iyi olma halini etkilediğidir. Bir diğer bulgu ise çalışanların benlik saygısının bu etkide kısmi aracılık rolüne sahip olmasıdır. Araştırmadan elde edilen tüm bulgular yazın bağlamında tartışılmıştır.
İş Ertelemenin İş Stresine Etkisinde Yönetici Desteğinin Aracı Rolü
Authors: Kaynak İnan , Çiçek Berat
Published: October 2023

Bu çalışmanın amacı, iş erteleme davranışının iş stresine olan etkisini araştırmaktır. İş ertelemenin iş stresine etkisinde yönetici desteğinin rolünün tespiti, çalışmanın bir diğer amacını oluşturmaktadır. Bu kapsamda TRB2 bölgesindeki özel ve kamu bankası çalışanları üzerinde 318 kişi ile bir anket çalışması yapılmıştır. Hipotez testi sonuçlarına göre, iş ertelemenin iş stresi üzerinde pozitif yönlü ve anlamlı; yönetici desteği üzerinde negatif yönlü ve anlamlı bir etkiye sahip olduğu belirlenmiştir. Yönetici desteğinin ise, iş stresi üzerinde negatif yönlü ve anlamlı bir etkiye sahip olduğu görülmüştür. Ayrıca yönetici desteğinin iş erteleme ile iş stresi arasındaki ilişkiye kısmi aracılık ettiği sonucuna ulaşılmıştır.
Study of the activity of bifunctional catalyzers on the transformation of n-hexane
Authors:   Saratov State University, Vnukov Ilya V. , Ashikhmin Egor A. ,   Saratov State University, Romadenkina Svetlana B. ,   Saratov State University, Aniskova Tatiana V. ,   Saratov State University
Published: October 2023

The production of various motor fuels is carried out by processing light fractions of oil with an initial temperature of boiling to 350°С. The current trend shows that oil in new fields has more weight than before. New oil reservoirs are deeper with a greater proportion of dark fraction with a boiling point of 350°С. This situation stimulates to find new ways of increasing the processing depth light fractions for synthesis target product. One of the main solution path for the problem is creation of new catalytic systems or modernization of existing ones. Motor fuels must meet the necessary operational and environmental characteristics, which is determined by their chemical composition. This article is devoted to the study of bifunctional catalyzers for the conversion of n-hexane. High molecular zeolite CVM (ZSM-5) was used as a carrier, which has functionality due to the presence of various active centers. Platinum (Pt/CVM), praseodymium (Pr/CVM) were also applied to the carrier, and praseodymium and platinum (Pt,Pr/CVM) were successively applied by impregnation. Normal hexane was used as a raw material. The choice of this raw material is associated with the ability to aromatization reaction, as well as the presence of n-hexane in the raw materials of the process of obtaining motor fuels-catalytic reforming. As a result of the transformation of raw materials, liquid fuel of multicomponent composition with the number of carbon atoms in the chain from 3 to 14, as well as gases containing C1 – C5 hydrocarbons, was obtained. When n-hexane is converted on the catalyzers under study, both the octane number and the content of aromatic hydrocarbons increase with increasing temperature. It has been found that when the process is carried out at a temperature of 450°C, the highest yield of the catalysate is (33.8% by weight.) on a Pt,Pr/CVM catalyzer. With an increase in temperature, the yield of benzene increases. Minimum benzene yield (0.6 wt. %) is achieved at 450°C marked by a bimetallic catalyzer, which corresponds to the EURO-5 gasoline standard. The highest degree of conversion was observed during the conversion of n-hexane on the Pt,Pr/CMC catalytic system at a temperature of 450° C, which was (97%).
Microextraction preconcentration with nonionic surfactants and colorometric determination of phenol
Authors:   Saratov State University, Chebotareva Elena A. , Tsygulyova Elmira I. ,   Saratov State University of Genetics, Biotechnology and Engineering named after N. I. Vavilov, Doronin Sergei Yu. ,   Saratov State University
Published: October 2023

The extraction of the tungsten blue complex formed by the reaction of phenol with Folin-Ciocalteu reagent (FCR) in the presence of a nonionic surfactant Triton X-100 in alkaline medium using the methodology of micellar extraction based on «clouding point» has been studied for the first time. Aqueous solutions of sodium carbonate and sodium sulfate were used to create pH and as a desalting agent. The latter, having a desalting effect, promotes phase separation in the system under study into a micellar phase saturated with surfactant (Triton X-100) and an aqueous phase depleted in surfactant without additional heating at room temperature. Optimal conditions for micellar phenol extraction were determined: FCR (0,2 n.) – Na2CO3 (6%) – Triton X-100 (2%) – Na2SO4 (3,2%). It is shown that micellar-saturated phases of Triton X-100 effectively extract the analytical form (tungsten blue complex), can be proposed for extraction-spectrophotometric and colorimetric determination of phenol. So, for the spectrophotometric determination of phenol (λmax= 760 nm), the Beer-Bouguer-Lambert law obeys an equation of the form: y = 0,0007x – 0,0079, R2 = 0,997. The range of defined contents is in the interval 7·10-7 – 6·10-5 M. A technique for the colorimetric determination of phenol in aqueous media (channel R) has been developed. The intensity of the chromaticity channel R (IR) linearly depends on pc(phenol) in accordance with the equation: y = 95,0x – 455; R2 = 0,997. The range of defined contents is in the interval 7·10-7 – 1·10-5 M. The profiles of the petal diagrams in the RGB CMYK color coordinates are constructed, the dependences of their area are obtained (S) and perimeter (P) from -lgc : (perimeter (P) y = 150x – 284; R2 = 0,994; area (S) y = 17710x – 66930; R2 = 0,994).