bluuebunny/crossref_metadata_2025 huggingface dataset:
Content and Language Integrated Learning: An Initial Case Study for Mold Engineering Courses at the Industrial University of Ho Chi Minh City, Vietnam
Authors:   Faculty of Mechanical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Go Vap., Ho Chi Minh City, 70000, Vietnam., Thi Bach Phuong Ho , Van Chinh Truong ,   Faculty of Mechanical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Go Vap., Ho Chi Minh City, 70000, Vietnam., Nguyen Ha Thi ,   Faculty of Mechanical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Go Vap., Ho Chi Minh City, 70000, Vietnam., Nguyen Trieu Khoa ,   Faculty of Mechanical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Go Vap., Ho Chi Minh City, 70000, Vietnam.
Published: May 2023

Abstract: The purpose of this study is to assess the applicability and effectiveness of the content and language integrated learning (CLIL) method applied for the mold engineering subject at the Industrial University of Ho Chi Minh City (IUH). Given that traditional engineering programs place emphasis on developing the technical knowledge of students while overlooking the critical roles of English skills, engineering graduates tend to lack the wide scope of spoken and written communication skills in English that are necessary for working in a professional environment. In light of the limited length of the curriculum, integrating content and language is likely to be a real solution to the problem. Nonetheless, scant scholarly attention has been paid to the applicability of the CLIL method in engineering courses in Vietnam, notwithstanding that Vietnam has become a dynamic emerging country demanding a highly skilled engineering labor force. Following the quasi-experimental design, students have been assigned into two groups, the treatment group and the control group. A pre-test has beenconducted to assess the equivalence of the levels of English proficiency of students between groups before the intervention, the CLIL method. A post- test has then been performed with both groups to compare their levels of English proficiency after the intervention. Likewise, another post-test has also been performed with both groups to assess the effectiveness of the CLIL method in conveying the subject knowledge. A mini-survey has also been conducted to measure the satisfaction of students with the CLIL method. Implications for academicians and practitioners are provided. Keywords: CLIL, English teaching, Technical English, Mold engineering, Second language (L2), Quasi-experimental design
Comparison of the Theoretical and Practical Knowledge of the Pre-Service Science Teachers in Turkey: The Context of Simple Electrical Circuits
Authors: AYVACI Hakan Şevki , BEBEK Gürhan , YAMAÇLI Selenay
Published: May 2023

Laboratory applications are one of the most essential strategies in science teaching. Therefore, science teachers are expected to advance their laboratory skills. In Türkiye, there are generally applications for construct theoretical knowledge. Literature indicates the need for individuals who can use knowledge. For this reason, there is a need for laboratory skills through which knowledge is used in science teaching. Hence to meet this need, it is expected that theoretical knowledge will be used unitedly with practical knowledge. This research aims to compare pre-service science teachers’ knowledge of simple electrical circuits which is both theorical and practical. The research group consisted of 60 pre-service science teachers studying at a university in Trabzon, Turkey. The study was carried out using the case study method under the category of descriptive research approaches. Data were collected with conducting drawings, observation studies of experimental setups, and clinical interviews. Data were analyzed through content analysis. The data obtained determined that pre-service science teachers had 'theoretical' knowledge within the scope of simple electrical circuits, but they could not put this knowledge into practice 'practically' and could not establish the circuits. In addition, it is one of the findings of the research that pre- service science teachers are theoretically limited in what they learn, and they do not have the opportunity to use the novel forms of knowledge in active learning environments, which indicates they do not have procedural knowledge.
Enrichment Studies in Gifted Education: A Bibliometric Analysis with RStudio
Authors: GÜL Muhammet Davut , AYIK Zekai
Published: May 2023

Gifted students are exceptional learners who need differentiated education. Enrichment is the most prevalent differentiation strategy including supplementation learning experiences of the depth, breadth, or intensity of content and process as appropriate to the student’s abilities and needs. Given the importance of assuring such education, the aim of this study is to investigate the trends related to enrichment in recent years by focusing on the bibliometric results of previous studies in the literature on enrichment in gifted education. For this goal, a total of 296 publications on enrichment gathered from Scopus and Web of Science databases were analyzed in terms of different bibliometric variables, and they were presented with visuals and tables. The PRISMA model was used for data collection and RStudio was employed for data analysis and image/table creation. The results of the study showed that the most frequently used keywords in research in both databases were “enrichment program” and “gifted students”. In both databases, the countries that had the highest number of publications were determined as USA and Germany. Furthermore, it was also determined that the top three most cited authors in scientific creativity studies in both databases were Joseph Renzulli, Sally M. Reis, and Marcia Gentry. The highest number of published contributions to the field was made by the University of Connecticut and Purdue University. The most active journals in the field are Gifted Education International and Roeper Review. Researchers interested in enrichment for gifted students can benefit from the results of the present study.
Why multilateralism is losing ground in audiovisual services in the WTO
Authors:   National Research University Higher School of Economics, Biryukova Olga
Published: May 2023

Trade in audiovisual services is both aimed at economic purposes and impacts social values of host countries. That is why this sphere has traditionally been one of the most difficult issues in the World Trade Organization (WTO) negotiations and an area of opposed approaches of the US and the EU. The author demonstrates that measures related to cultural policy can inherently shape protectionist trade barriers for support of national companies. Rapid development of technology has expanded the possibilities for the transmission and distribution of audio and visual content. At the same time, existing multilateral trade rules as well as applied classification for audiovisual services are becoming increasingly irrelevant. The article concludes that, on the one hand, the growing market for audiovisual services requires more precise rules for its cross-border trade, on the other hand, the trend towards the formation of regional blocks with specific regulations complicates negotiations (or even common understanding) on the rules for trade in audiovisual services under the WTO.
Integration Strategies of the Post-Soviet Countries – Analysis Using the Social Graph Approach
Authors:   VAVT, Alyev Timur , Stoyanova Elena ,   VAVT, Chimiris Ekaterina ,   VAVT
Published: May 2023

Authors’ Guidelines Peer Reviewing Publishing ethics Subscription News and Announcements Manuscript requirements Contacts ISSN (Print) 1996-7845 ISSN (Online) 2542-2081 Contacts: Postal address: 20, Myasnitskaya str., Moscow, Russia 101000 National Research University Higher School of Economics International Organisations Research Journal (IORJ) editors office Actual address: office 110, 47/7, bld. 1 Bolshaya Ordynka, Moscow Tel.: +7 495 772-95-90 ext. 23147 E-mail: iorj@hse.ru Indexed in Search text Отправить the website and texts of articles by authors by title (or part of title) by keyword Timur Alyev 1, Elena Stoyanova2, Ekaterina Chimiris2 1 VAVT, 6A Vorob'evskoe shosse, Moscow, 119285, Russia 2 VAVT, 6A Vorob'evskoe shosse, Moscow, 119285, Russia Integration Strategies of the Post-Soviet Countries – Analysis Using the Social Graph Approach 2023. Vol. 18. No. 1. P. 127–150 [issue contents] In connection with the current trends restructuring the global world order, the task of creating regional zones of trust, including in the format of integration trade associations between states, is coming to the fore. These trends play an important role in the foreign policy of states, including Russia. In this regard, this article analyzes the strategies of the states of the post-Soviet space in relation to regional economic integration. The article uses the method of constructing a social graph. Data on the concluded regional trade agreements between the states of the post-Soviet bloc with trading partners was analyzed. The model was also tested and compared against data on value chains and investment flows. Based on this analysis, a model for the distribution of countries' strategies for regional economic integration was created along two parameters: active/passive and centrifugal/centripetal. Four variants of strategies were identified: active centrifugal, active centripetal, passive centrifugal, and passive centripetal. The article presents the results of checking the obtained model and draws conclusions regarding the prospects for the development of regional economic integration in the post-Soviet space.
Transformation of the “Climate Club” Concept: From Theory to Practice (Review)
Authors:   RANEPA, Popova Irina
Published: May 2023

The concept of a "climate club" has been presented by researchers as an attempt to ensure progress in the achievement of the Paris goals through the adoption of more ambitious targets and restrictive measures, including carbon pricing, by a group of countries, preferably those responsible for a larger share of global greenhouse gas emissions. Theoretical models are virtually impossible to implement in practice, so attempts have been made to develop club configurations that take into account political, economic and institutional realities. Based on this body of work, the first concepts of clubs that can be realistically implemented are presented. They differ in terms of membership conditions, levels of policy harmonization, ambitions of goals, and ways to punish free riders. Attempts to take into account the interests of countries with different levels of development and strength of climate policy, as well as willingness to introduce new restrictive measures, lead to weakening of the institutional structure and reduction of efficiency. However, some aspects of cooperation can still be developed to ensure the reduction of emissions, harmonization of standards being one of them
Climate Risks and Financial Stability: The Role of Central Banks and Implications for Russia
Authors:   RANEPA, Levakov Pavel , Barinova Vera ,   RANEPA, Polbin Andrey ,   RANEPA
Published: May 2023

One of the key challenges of modern times is climate change, which is occurring at an unprecedented pace. This phenomenon also affects the financial system through increased risks. In response to rising financial risks, central banks around the world are becoming more involved in climate policy. Within the framework of this article an analysis based on modern scientific literature is made to evaluate the participation of central banks in preventing climate change and stabilizing the financial system, as well as to assess the effectiveness of their policies. The article identifies potential connections between global warming on the financial system and evaluates this relationship based on the analysis of empirical evidence and mathematical models. In addition, the role of central banks in attracting green investments is estimated. The reaction of central banks to climate change and the destabilization of the financial system in developed and developing countries is considered within the article; in particular, the difference between the instruments used is analyzed. It is concluded that, currently, a more active climate policy is being pursued by the central banks of the developing countries. Finally, based on the analysis of international practices, recommendations are made for the Central Bank of the Russian Federation, as it is exposed to significant transitional climate risks. The key recommendations include the need to differentiate the value of collateral assets and regulatory requirements for the structure of financial institutions' asset portfolios, depending on the risk of a decrease in their value due to the global community's fight against global warming and climate change.
Problematic Aspects of the Teaching of Spanish Phonetics to Francophone University Students of West Cameroon
Authors: Nguendjo Issacar
Published: May 2023

According to recent theories on language learning in general and on Spanish language in particular, to be efficient in teaching and learning foreign languages, one can among other things identify the major stumbling blocks and the systematic errors common to a sample of learners who have a common profile and linguistic background. I have therefore decided, in the framework of this piece of work, to focus on the sensitive aspects of the teaching of Spanish phonetics and phonology to our Spanish students of the University of Dschang. It is noticeable that our Spanish- speakers (mostly of Bantu background, natives of the western region of Cameroon and officially francophones) are confronted with some difficulties when they want to speak Spanish. After identifying students' systematic errors, I decided to explain the causes of the respective deviant usages as compared to the phonetic norm of standard Spanish in order to improve students' pronunciation of Spanish words.
The Role of Rubrics in Fair Assessment Practices
Authors: Picón-Jácome Edgar
Published: May 2023

In this article, I support the thesis that utilizing rubrics, discussed and agreed upon teachers and students, guarantees the promotion of fair assessment practices. This claim is supported by the argument that designing and applying scoring rubrics enhances validity and transparency in evaluation, while their consensual design supports democracy, promotes positive washback and facilitates equitable assessment practices—all of them principles inherent to fairness. A concept of rubric that integrates an authentic task and its scoring scale, applied as an alternative assessment procedure within a critical approach, is emphasized.
Autonomy in English learning and its relationship with independent works assigned to students
Authors: Cabrales Vargas Myriam , Cáceres Cabrales Jaime Andrés , Feria Marrugo Irina Margarita
Published: May 2023

The objective is to analyze the influence of learning practices and inde­pendent assignments, on the development of the autonomy of the students of the English basic cycle of the Modern Languages program. Descriptive and correlational investigation was used, which by means of quantitati­ve and qualitative interpretation of data relates the variables in the study, to determine its influence on the development of autonomy in students. Though some of them (25%) are autonomous, the rest do not reach this characteristic, due to little control exercised on their learning processes and because the tasks that are assigned to them do not help in the develo­pment of autonomy. The conclusion is that the strengths found in relation to the motivation of the students, their satisfaction with the program and their interest in ICT, are factors that if promoted, would contribute to the development of autonomy, work that has already begun and is commented on at the end of this article.

Recieved 07-01-2010/ Accepted: 02-10-2010

How to reference this article:

Cabrales Vargas, M., Cáceres Cabrales, J. A. & Feria Marrugo, I. M. (2010). La autonomía en el aprendizaje del inglés y su relación con los trabajos independientes asignados a los estudiantes. Íkala, 15(3), 119 – 150.
Application of Microscopic Techniques for Studying Microstructure of Concrete Containing Lightweight Aggregate
Authors:   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Halim Nur Fatihah , Mat Yazid Muhamad Razuhanafi ,   Smart and Sustainable Township Research Centre (SUTRA), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Bastam Mukhlis Nahriri ,   Universitas Bina Darma, Palembang, Indonesia
Published: May 2023

The reason for failure in engineering component can be attributed to design deficiencies, poor selection of materials, manufacturing defects, exceeding design limits and overloading, and inadequate maintenance. The behaviour of material depends on the chemical, physical, mineralogical, microstructure characteristics and the interaction between them in the concrete. The aim of this research is to investigate some of the properties on the concrete that is containing the lightweight expanded clay aggregates (LECA). Study the microstructure of concrete be able to understand the relationship between structure and behaviour of concrete. Interaction inside the phase of concrete such as dislocations, grain boundaries, phase interfaces, pores and crack can be identified by a microstructure of concrete. Therefore, a microstructure of concrete has been studied under a digital microscope. The properties of LECA were investigated in order to relate the behaviour of aggregate in the concrete. LECA were used in the production of lightweight aggregate concrete (LWAC) with the size 50 mm × 50 mm × 50 mm. The results show that LECA has several improvements when compared with normal crushed aggregate. The density of LECA was 520 kg/m3 and its characteristics were round, rough and porous. Besides that, the LWAC shows an excellent strength development, 29.41 MPa compared than normal weight concrete (NWC), 25.57 MPa. The surface of LWAC was darker than NWC due to LWAC experience more hydration of ferrite compound. In addition, the microstructure investigation of the LWAC shows a good bonding between aggregate and mortar at the interface transition zone (ITZ).
Motorist Compliance Level Towards Pedestrian Crossing in University Campus
Authors:   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Zainal Siti Khairunisa , Borhan Muhamad Nazri ,   Smart and Sustainable Township Research Centre (SUTRA), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Othman Mardhiah ,   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
Published: May 2023

A pedestrian crossing is a facility designated for pedestrians to cross a road in groups, so that they can be seen by the motorists. Pedestrian crossing is also used by them to cross safely across a flow of vehicular traffic. However, accidents still occur among pedestrians even though there are provisions for pedestrian crossing facilities. The purpose of this research is to identify the level of motorists’ compliance towards pedestrian crossing at Universiti Kebangsaan Malaysia (UKM) which is located in Bangi, Selangor. This research involved 326 respondents among motorists and pedestrian that comprised of UKM’s undergraduate and postgraduate students. This research aims to measure and analyse the level of compliance and the importance of motorists, pedestrian, facilities and maintenance factors using the Importance Performance Analysis (IPA) method. The data were analysed by using the Statistical Package for Science Social (SPSS) 22. The results of IPA were divided into four quadrants where some of the factors must be improved by UKM’s authority and some must be maintained. From the IPA analysis, it was concluded that the street lightings must be improved and upgraded by UKM’s management as the attribute lies on Quadrant 2 where Quadrant 2 represents the attributes that need to be prioritised, so that accidents between motorists and pedestrians can be avoided.
Ultimate Load Behaviour of Steel-Concrete Composite Plate Girders with Inclined Stiffeners
Authors:   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Azmi Mohd Reza , Md. Yatim Mohd Yazmil ,   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Wan Badaruzzaman Wan Hamidon ,   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Ahmad Irfana Kabir ,   Smart and Sustainable Township Research Centre,  Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia, Mohd Zawawi Mohd Hafiz ,   Civil Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
Published: May 2023

This paper focuses on the ultimate load behaviour of steel-concrete composite plate girders with inclined stiffeners. For this research, non-linear modelling and analyses were carried out on ten simply supported composite plate girders using a commercial finite element software, LUSAS. The girders are of practical design size and subjected to a single concentrated load applied at the centre of the girder span. Effects of different inclination angles of intermediate stiffeners and web-depth to thickness (d/t) ratios on the post-buckling behaviour of the girders are investigated. Five different angles of stiffeners, measured from the bottom flange, were considered in the research, viz., 90°, 75°, 60°, 45° and 30° while the web thickness, tw used in this study are 2 mm and 3 mm. With the effects of such inclinations, the variations of ultimate load, load-deflection response and failure characteristics were obtained. The load carrying capacity was found to rise significantly of about 32%, as the angle of inclination reduced from 90° to 30°. The ultimate strength of the composite girder also shows a maximum increase of 28%, when the web thickness, tw rises from 2 mm to 3 mm.
Prostate cancer: current situation in Russia and Saint Petersburg according to medical statistical indicators
Authors: Popov S. V. , Guseynov R. G. , Khizha V. V. , Yazenok A. V. , Orlov I. N. , Sivak K. V. , Perepelitsa V. V. , Bunenkov N. S. , Ulitina A. S.
Published: May 2023

Background. Prostate cancer is one of the most common malignant neoplasms in the male population worldwide with high morbidity and mortality rates.

Aim. To study the main medial statistical indicators of prostate cancer in Saint Petersburg and other regions of the Russian Federation.

Materials and methods. The epidemiological indicators of prostate cancer for 2012-2021 in the Russian Federation, individual federal districts and Saint Petersburg were analyzed.

Results. The prevalence of malignant neoplasms of the prostate has increased in recent years. At the same time, the number of cases of early-stage disease diagnosis has increased, one-year mortality has decreased, and 5-year survival has increased, which indicates proper quality of oncological care for the population. In some federal districts, unstable or negative dynamics of indicators compared to the average Russian data are observed, which requires further analysis.

Conclusion. Evaluation of statistical measures of morbidity and mortality from malignant neoplasms of the prostate gland can be used to improve diagnostic algorithms and therapeutic tactics for this pathology.
The role of obesity in patients with renal cell carcinoma
Authors: Kravtsov I. B. , Solodky V. A. , Pavlov A. Yu. , Dzidzaria A. G. , Fastovets S. V. , Khoroshevskaya I. V.
Published: May 2023

Renal cell carcinoma is one of the most common malignant neoplasms of the genitourinary system. Along with smoking and hereditary syndromes associated with mutations in the Von Hippel-Lindau (VHL) gene, obesity is one of the main risk factors for the development of renal cell carcinoma. Emerging data indicate a causal relationship between obesity and development of renal cell carcinoma. In a large study within the framework of the Metabolic Syndrome and Cancer project, clinical data on blood pressure, body mass index, blood glucose, cholesterol and triglycerides were collected in 560,388 people. Individually, high glucose and triglyceride levels, as well as high body mass index and blood pressure, correlated with an increased risk of renal cell carcinoma in men, while only body mass index had a significant correlation in women.
Socially significant activities of the religious communities of the UGCC in Ukraine during the period of independence
Authors:   Pavlo Tychyna Uman State Pedagogical University, Uman, Ukraine, Koshushko Tetiana
Published: May 2023

This research is devoted to the issues of socially significant activities carried out by religious communities belonging to the Ukrainian Greek Catholic Church in Ukraine during the period of independence. In the course of the research, using official web portals and other publicly covered resources, the factual material was analyzed and theoretical generalizations were subjected to philosophical and religious reflection, which allowed determining the following: the intensity of social activities carried out by the religious communities of the Catholic Church in Ukraine during the period of independence is caused by external processes of democratization and general spiritual renewal of society; the integrative intentions that declare the cooperation of Catholics with public structures are emphasized, postulating the idea that activities are a kind of service that leads to a certain interpenetration of Christian values in society, creating a special dialogue between believers and people of the secular worldview. Thus, openness and empathy with social problems, joint search for solutions to social issues, and the introduction of the idea of the dominance of Christian landmarks by members of the Catholic community creates conditions for finding options for positive reconstruction of the domestic social space; the functional competence and coordinated structure of the work of Catholic religious communities are noted, as well as real examples of the priority of religious freedom and interfaith tolerance are indicated; the multi-vector nature of the work carried out during the implementation of various social projects in the charitable, educational, cultural, publishing, medical, publishing, and military spheres is highlighted; it was found that the activities of representatives of the Catholic religious communities in the social sector are largely based on certain work strategies that appeal to theoretical postulates, socially-oriented documents of the Catholic Church, and, accordingly, formalized in special guidelines. In general, the article is based on the general provisions declared by the official position of the Catholic Church on social policy and outlines the areas in which the religious communities of the UGCC develop social activities in Ukraine since independence.
Performance Evaluation of Energy Efficient Optimized Routing Protocol for WBANs Using PSO Protocol
Authors: Diniesh V. C. , Prasad L. V. R. Chaitanya , Bharathi R. Jennie , Selvarani A. , Theresa W. Gracy , Sumathi R. , Dhanalakshmi G.
Published: May 2023

A Wireless Body Area Network (WBAN) is a network that may be worn on the human body or implanted in the human body to transmit data, audio, and video in real-time to assess how vital organs are performing. A WBAN may be either an inter-WBAN or an intra-WBAN network. Intra-WBAN communication occurs when the various body sensors can share information. This is known as inter-WBAN communication, which occurs when two or more WBANs can exchange data with one another. One difficulty involves getting data traffic from wireless sensor nodes to the gateway with as little wasted energy, dropped packets, and downtime as possible. In this paper, the WBAN protocols have been compared with WBAN under Particle Swarm Optimization (PSO), and the performance of various parameters has been analysed for different simulation areas. The WBAN under the PSO protocol reduces the energy consumption by 43.2% against the SIMPLE protocoldue to the effective selection of forwarding nodes based on PSO optimization. In addition to that the experimental WBAN testbed is conducted in indoor environment to study the performance of the routing metrics towards energy and packet reception..
Clinical effectiveness of smile design planning
Authors: Zolotarev Nikolay N. , Apresyan Samvel V. , Stepanov Alexander G.
Published: May 2023

BACKGROUND: Current digital technologies have huge effects on all branches of medicine, including dentistry. Digital smile design allows the creation of prosthetic restorations that are both esthetically and functionally reliable. This study reveals a technique for combining two-dimensional (2D) smile design planning with three-dimensional (3D) planning and evaluating its clinical effectiveness.
AIM: To study patient satisfaction with the virtual smile design dental service provided with and without the 2D planning stage.
MATERIALS AND METHODS: In this study, a mockup was traditionally made (obtaining impressions from the upper and lower jaws, making a wax model of teeth by a technician from a photograph of a patient without a 2D planning stage) using 2D virtual smile design planning. The total sample size was 60 people aged 2535 years, of which 20 were men and 40 were women. Clinical efficacy was assessed by questionnaire using the OHIP-14 questionnaire before and after planning. The answer options for each question were interpreted as almost never, 1 point; sometimes, 2 points; often, 3 points; and very often, 4 points. The scores were inversely correlated. In the first stage, a survey of patients was conducted before planning. Thirty patients underwent traditional mockup, and the remaining 30 patients underwent virtual 2D planning.
RESULTS: The quality of life increased by 1.95 times when using traditional mockup manufacturing technology and 2.8 times using 2D virtual planning. This correlation showed that when using traditional 2D smile design planning, the patient cannot see the stages of dentition modeling, and the technician may not take into account all the wishes of the patient. With virtual planning, the patient is involved in this process. Digital smile simulation allows the demonstration of planning, takes into account the wishes of the patient, increases the trust between the doctor and the patient, and thus achieves a successful planning result.
CONCLUSION: The obtained results show the high clinical efficiency of virtual smile design planning using the developed protocol.
Frequency of galvanic pair detection of metal structures in the mouth in the absence of galvanic syndrome and pathological changes in the oral mucosa
Authors: Ragulin Arseniy V. , Volkov Alexander G. , Dikopova Nataliya Zh. , Amanatidi Georgy E. , Olesov Egor E.
Published: May 2023

BACKGROUND: Currently, numerous metal structures are used in dentistry, such as implants, pins, dentures, etc. These structures are often made of various metals and metal alloys with different electrochemical potentials. This circumstance can lead to the appearance of a galvanic cell, consisting of metal structures. In the existing literature, no data reveal the frequency of the detection of galvanic pairs of metal structures in the mouth in the absence of galvanic syndrome and oral mucosal diseases.
AIM: To examine the detection frequency of galvanic pairs of metal structures in the mouth in the absence of galvanic syndrome and pathological changes in the oral mucosa.
MATERIALS AND METHODS: A survey of 133 patients aged 3387 years was conducted to detect the presence of galvanic pairs of metal structures in the mouth. All patients do not have galvanic syndrome and pathological changes in the oral mucosa. The patients were divided into four age groups: 3344 years old (n = 33), 4559 years old (n = 35), 6074 years old (n = 35), and 7587 years old (n = 30). Electrochemical potentials of metal structures in the mouth were determined according to the method developed at the Department of Therapeutic Dentistry of the E. V. Borovsky Institute of Dentistry of the First Moscow State Medical University named after I.M. Sechenov (Sechenov University). An electrode made of 999 gold was used as an active indicator electrode, which was used to touch metal structures in the mouth during the study. An EHP-1 silver chloride electrode was used as a passive reference electrode. A Fluke 115 multimeter was used as a measuring device.
RESULTS: In the group aged 3344 years, galvanic pairs were found in 18%, and they had 5.2 2.1 metal structures. The group aged 4559 years had 7.4 3.5 metal structures in the mouth, and 23% of the participants had galvanic vapors in the oral cavity. In the group aged 6074 years, 26% had galvanic vapors in the oral cavity. In this group, the maximum number of metal structures in the mouth was 7.9 4.1. In the group aged 7587 years, 20% had galvanic pairs of metal structures in the mouth, and they had 5.9 1.8 metal structures in the oral cavity.
CONCLUSION: Galvanic pairs of metal structures in the oral cavity were found is 1826% of the participants in different age groups. The share is associated not so much with age but to a greater extent with the number of metal structures in the oral cavity. With the increased number of metal structures, the probability of the appearance of a galvanic pair in the mouth, formed by metal structures with different electrochemical potentials, increases.
Associations between dietary factors and caries among 12-year-old children in Arkhangelsk region
Authors: Gorbatova Maria A. , Pochinkova Polina A. , Simakova Anna A. , Utkina Elena I. , Grjibovski Andrej M.
Published: May 2023

BACKGROUND: Despite the decrease in the prevalence and experience of dental caries in 12-year-old children in the Arctic zone of the Russian Federation, the quality of life associated with dental health remains low. Consumption of sweet foods has been reported to be associated with a low quality of life. However, associations between nutritional factors and dental caries remain poorly studied in Russia, particularly in the Arctic using the World Health Organization (WHO) criteria.
AIM: To study associations between nutritional risk factors and the prevalence and experience of dental caries among 12-year-old children in Arkhangelsk region using WHO criteria.
MATERIALS AND METHODS: In total, 1162 children aged 12 years in seven urban and five rural settings of Arkhangelsk region participated in a cross-sectional study using the WHO methodology. Bivariate associations between the frequency of consumption of the studied foods and caries were analyzed using Pearsons chi-squared tests. Associations between the average values of the DMFT index and its components across frequency categories of nutritional factors were assessed by a multivariable Poisson regression.
RESULTS: Adolescents drinking soft drinks once a day or more often had significantly more filled teeth than those in the reference group (p = 0.003). An inverse association was observed between the frequency of tea / coffee / milk consumption and mean DMFT (p = 0.041), which was largely attributed to the differences in the number of filled teeth (p = 0.009). The number of filled teeth among those who consumed tea / coffee / milk at least once a day was 8% lower than in the reference group.
CONCLUSION: Among adolescents, significant associations were observed between caries experience and consumption of soft drinks and tea / coffee / milk with sugar. Measures aimed at the reduction of consumption of these items should be included in caries prevention programs.
Quality of life of patients without teeth, which are prosthetized
Authors: Terechov Matvey S. , Apresyan Samvel V. , Stepanov Alexander G. , Kiryushin Maxim A.
Published: May 2023

BACKGROUND: High-quality rehabilitation of patients without teeth is one of the urgent problems in dentistry today. Owing to the growing number of older patients and the need for quality treatment, the most physiologically accurate complete removable dentures that meet the needs of patients and reduce negative effects after treatment must be manufactured.
AIM: To determine and compare the effect of complete removable dentures, made by computer-aided design and computer-aided manufacturing methods, on the quality of life of patients without teeth.
MATERIALS AND METHODS: The clinical study involved 60 older patients (aged 60 years) without upper and lower teeth. These patients were randomly divided into two equal groups. In the first group, removable dentures were manufactured using digital technologies. In the second group, removable dentures were made by traditional technology. The quality of life of all patients before and after treatment was evaluated using the OHIP-14 questionnaire.
RESULTS: More positive assessments were noted in the change in the state after prosthetics with full removable dentures made by digital technology. With approximately total equal indicators of the questionnaire, the best values of the clinical effect were found in the digital technology for making prostheses with 3.74 versus 1.19. When comparing individual categories, eating problems, communication problems, everyday living problems, and clinical performance were markedly higher with digital manufacturing technology.
CONCLUSION: The clinical efficacy of treatment with prostheses made using digital technology is on average approximately 3.14 times higher (p 0.001) than that in orthopedic rehabilitation using prostheses made by analog traditional technology. Thus, better clinical results are obtained in patients using prostheses made by the proposed technology for making complete removable dentures.
Influence of a colloidal silver dioxide solution on the edge adjustment of the mineral aggregate trioxide cement for closure of perforation communications in vitro
Authors: Kozlova Ivanna V. , Kovalevsky Alexander M. , Vorobieva Julia B. , Zheleznyak Vladimir A.
Published: May 2023

BACKGROUND: According to Russian and foreign literature, the probability of iatrogenic perforation of the wall of the tooth root canal is high (9.712.5%) during endodontic dental treatment. This is a poor prognostic sign and may subsequently result in tooth extraction. Moreover, cases without curing of mineral trioxide aggregate (MTA) cement with pronounced exudation were reported. Сurrently, the modification of domestically produced MTA cement is relevant for closing teeth root canal perforation.
AIM: This study aimed to conduct a comparative experimental microscopic study of the preservation of the marginal fit to the tooth tissues in perforation areas filled with MTA cement mixed conventionally with distilled water and a colloidal silver dioxide solution.
MATERIALS AND METHODS: Sixty teeth previously removed for medical reasons were endodontically treated after iatrogenic perforation formation in the furcation area of the roots. Two groups were formed. In the first group, MTA cement mixed with distilled water was used to close dental perforations. In the second group, MTA cement mixed with a colloidal silver dioxide solution was utilized. The groups were divided into subgroups depending on the MTA cement brand used. The teeth were placed in an automatic incubator HHD 7 LED, in which an optimal mode was created, simulating the conditions of the oral cavity (t = 37 C, humidity 99%). The samples were placed in artificial saliva. After two months of exposing the teeth to a humid environment, the preservation and damage to the marginal fit in the perforation area of the fillings were determined under a Levenhuk 720B binocular microscope.
RESULTS: In the perforations of the 30 teeth sealed with various MTA cement types mixed with distilled water, damage of the marginal fit was found in seven (23.3 7.9%) cases. Similar damage in 30 teeth with colloidal silver dioxide solution used to prepare MTA cements was detected in two (6.7 4.6%) cases (p 0.050, t = 1.82).
CONCLUSION: The use of MTA cement mixed in a colloidal silver dioxide solution, in comparison with distilled water, contributes to a greater preservation of the marginal fit of the material to the walls of the root canal in an in vitro experiment.
Alexander Georgievich Egorov was the rector of Leningrad Chemical-Pharmaceutical Institute from 1958 to 1972
Authors: Narkevich Igor A. , Vorobeva Svetlana A. , Volgusheva Alla O. , Perelygin Vladimir V.
Published: May 2023

Based on unpublished sources from the Central State Archive of Historical and Political Documents of St. Petersburg, as well as from the Central State Archive of St. Petersburg, the biography of Alexander Georgievich Egorov, the rector of the Leningrad Chemical-Pharmaceutical Institute, has been reconstructed. His career in education was extraordinarily successful, which was explained on the one hand by his personal merits, and on the other hand, by his simultaneous rise up the political ladder, which was a tribute to the times and characterized the Soviet system as a whole. The authors consider Alexander Georgievichs contribution to the improvement of the structure and personnel of the Leningrad Chemical-Pharmaceutical Institute, the development of scientific work, and the modernization of the institutes material and technical base. Thanks in large part to the organizational qualities and leadership abilities of Rector A. G. Egorov, during his 12-year leadership, the Leningrad Chemical-Pharmaceutical Institute became known and was the only higher educational institution of its kind, where specialists in the field of pharmacy were trained not only for pharmacies, but also for pharmaceutical factories
Data Wrangling from Socio-Academic Web-Space: Designing a Meta Model
Authors: Nath Amit , Jana Sibsankar
Published: May 2023

Data carpentry is an emerging field in the domain of LIS and has opened new possibilities for information professionals to survive in the age of data-intensive information services. However, library professionals face the challenges of information overload because of the free availability of data, both in terms of quantity and variety. The role of library professionals is moving from tech-savvy to data-savvy. This research discusses the possibilities of ODbL-based data sources that offer freely accessible data through API calls and proposes a meta-model for fetching and extracting datasets from these databases using an open-Source Data Wrangling Tool (OpenRefine). Further, it discusses the possible application of data wrangling techniques from diverse sources in libraries and how information professionals can take advantage of openly available data to provide value-added information services to users. The practical implications of an array of databases are projected through two case studies: Case Study I deals with measuring the productivity of individual institutions through different metrics, and Case Study II projects a coverage comparison among the ODbL-based citation and Altmetric databases. This meta-model will aid in understanding the potential application of data wrangling techniques to an array of library services.
TIMCPOT: Tcl/Tk Interface for Measuring Crustal Phase-Onset Time
Authors: Zhang Fengxue , Hu Liya , Li Yu
Published: May 2023

In recent years, the seismological community has seen an amazing increase in the amount of seismic arrival time picks with the help of artificial intelligence. But, the accuracy of this data remains a challenge to seismologists. In comparison with automatic picks, manual picks have sufficient reliability and accuracy because manual picks are often used not only as a benchmark to evaluate automatic picking algorithms, but also as training samples to train artificial intelligence models. However, measurement through manual labor is a laborious and time-consuming task. To alleviate the manual labor involved in measuring phase arrival time, we developed a graphical interface named Tcl/Tk Interface for Measuring Crustal Phase-Onset Time (TIMCPOT). The TIMCPOT is mainly equipped with two modules: one is designed for measuring seismic arrival time, and the other is for relocating hypocenter. TIMCPOT simplifies user interaction with seismic data, thus reducing most manual labor. TIMCPOT provides several graphical workflows to carry out detection, identification, revision, and comparison operations on measurement work. The measurement procedure can be operated either manually or by autopicker. For the sake of allowing the user to interact easily with seismic data, TIMCPOT is designed to be executed in a semiautomatic model during several necessary procedures such as visually inspecting results and manually modifying picks. By applying a near real-time displaying technique, TIMCPOT can create a travel time curve figure and comparison chart for manual picks in a timely fashion, which provides a rapid way to estimate data quality. The measurement efficiency and travel time data quality have been significantly improved using this graphical interface. An explicit demonstration was shown to validate the powerful performance mentioned earlier. The primary advantage of TIMCPOT is that it reduces manual labor while retaining valuable manual experience on measuring phase picks. Of course, TIMCPOT has several limitations. However, most limitations will be improved in future development.