bluuebunny/crossref_metadata_2025 huggingface dataset:
A HYBRID MEREC-TOPSIS APPROACH FOR THE IMPROVEMENT OF PHYSICAL VAPOUR DEPOSITED TITANIUM CARBO-NITRIDE COATING
Authors:   Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, GHADAI RANJAN KUMAR , KALITA KANAK ,   Department of Mechanical Engineering, Vel Tech Rangarajan Dr, Sagunthala R&D Institute of Science and Technology, GUPTA MUKUL ,   UGC-DAE Consortium for Scientific Research, University Campus
Published: September 2024

Titanium carbo-nitride (TiCN) comes under the metal nitride group which can provide a combined property of titanium carbide (TiC) and titanium nitride (TiN) coating. TiCN Coating possess an excellent mechanical and tribological, properties which leads its application in many industries particularly in the Automotive and aerospace industries. TiCN films can be very hard and strong based on the composition and synthesis process. Physical Vapor Deposition (PVD) technique is widely used for the preparation of thin film coating because of its ability to precisely control the composition and thickness of the coatings. The properties of the developed coating significantly affect by the PVD process parameters and their levels. Multi-Criteria Decision Making (MCDM) methods are widely used in many sectors for the selection of process parameters based upon some specific criteria. In the present work TiCN coatings were synthesized by using one of the most widely used PVD method called magnetron sputtering. L16 orthogonal array was used as a design of experiment for the experimental work by varying the sputtering process parameters like bias voltage, N2 flow rate and substrate to target distance. After the synthesis, the developed films were tested using atomic force microscopy (AFM), Scanning electron microscopy (SEM), and Nanoindentation. From the characterization three response parameters such as hardness (H), Modulus of elasticity (E) and surface roughness (Ra) of the coating has been considered. A hybrid method based on improved removal effects of criteria- technique for order performance by similarity to ideal solution (MEREC-TOPSIS) approach has been considered for the for the process parameters selection. The results have also been compared with other weight calculation techniques. In all the cases it is observed that experiment no 16 and 15 have got the 1st and second rank respectively. However, experiment no 1 is the last rank in all the cases. From the correlation analysis it is found a strong positive correlation between MEREC-TOPSIS and other methods. The method provides a significant advancement in the selection of optimal parameters, ensuring enhanced coating properties crucial for industrial applications.
EFFECT OF TECHNOLOGICAL PARAMETERS OF THE PULSATING WATER JET ON EROSION EFFECTIVITY ON A LINEAR TRAJECTORY
Authors:   Institute of Physics of Materials, The Czech Academy of Sciences, POLOPRUDSKY J. , KLICHOVA D. ,   Institute of Geonics, The Czech Academy of Sciences, STOLARIK G. ,   Faculty of Manufacturing Technologies TUKE with a seat in Presov, CHLUPOVA A. ,   Institute of Physics of Materials, The Czech Academy of Sciences
Published: September 2024

The article focuses on easily adjustable technological parameters controlling the effectiveness of pulsating water jet (PWJ). The first technological parameter is standoff distance; this parameter controls water cluster development and should be set optimal according to process hydraulic parameters. The second parameter is feedrate, this parameter, when considering linear trajectory, controls the impact distribution on the treated area. Four hydraulic pressure levels (30, 40, 50, and 60 MPa) were selected for the experiment. The standoff distance was during the experimental runs ranging from 26 to 68 mm with the goal of finding optimal value. The optimal standoff distance was selected based on Rz and Rv parameters. Rz and Rv values show increasing tendency with increment of standoff distance followed by culmination and then decreasing tendency. The impact distribution ranged from 8 000 to 40 000 impacts per millimeter. The decrease in water impact shows strictly decreasing tendencies in all evaluated parameters. However, the increase in pressure level shows better percentual retainment of erosion effectivity during the lowering of water impact distribution.
ANALYSIS OF SCANNING AND 3D PRINTING ACCURACY OF AN ANCIENT ARCHAEOLOGICAL ARTIFACT: A CASE STUDY
Authors:   Polish Academy of Sciences, Institute of Archaeology and Ethnology, RENNWANZ JOANNA , MIZERA ONDREJ ,   VSB – Technical University of Ostrava, Faculty of Mechanical Engineering, KILIKEVICIUS ARTURAS ,   Vilnius Gedyminas Technical University, Institute of Mechanical Science, MATIJOSIUS JONAS ,   Vilnius Gedyminas Technical University, Institute of Mechanical Science, RYBA TOMASZ ,   Casimir Pulaski Radom University, Faculty of Mechanical Engineering, RUCKI MIROSLAW ,   Casimir Pulaski Radom University, Faculty of Mechanical Engineering
Published: September 2024

The paper presents results on accuracy assessment of scanning procedure and of subsequent 3D printing of the object copies. The investigated object was an archeological artifact made out of burnt constructional clay, found at the archaeological site No. 6 in Gasawa, Poland, assigned to the end of 2nd or of 3rd century C.E. The analysis enabled to determine the taxonomic marking, the type and species of the tree used for the construction. The object was scanned with portable HandyScan3D device, and the repeatability of the single point identification assessed from 10 repetitions was %EV=19% for this application.
Design of the 3D Printhead with Extruder for the Implementation of 3D Printing from Plastic and Recycling by Industrial Robot
Authors: Pollák Martin , Kaščak Jakub , Telišková Monika , Tkáč Jozef
Published: September 2024

This paper deals with the design of the printhead prototype with extruder which serves for universal processing using several types of materials. It briefly describes the basic principles of FDM technology for which the prototype is designed. The main goal is to explore the possibility of combining 3D printing, and robot technology in order to design a universal printhead, capable of printing from plastic, recycled materials and other substances, including the composites. The proposed concept allows printing oversized objects that are not limited by the relatively small working space compared to commercial FDM devices.
Before Teaching Cybersecurity in the University: Usability Analysis of the Cloud Platform with Learner’s Perspective
Authors: Kolhar Manjur , Alameen Abdalla
Published: September 2024

The aim of this research is to apply usability evaluation of the Cloud Service Providers (CSP) established for various development purposes, CSP also are used in teaching cybersecurity courses for undergraduate program. In order to apply usability evaluation, two CSP products are used, namely Google Cloud and Microsoft Azure. We have applied usability evaluation method to measure its appropriateness with respect to learning and the use of a product for teaching. We have categorized students in two groups, namely expert and novice. Our evaluation suggests that before using graphical user interfaces of CSP, one should have knowledge and skills in implementing Cybersecurity project.
The Approach to Managing Corporate Social and Environmental Responsibility in Manufacturing
Authors: Myroshnychenko Iuliia , Makarenko Inna , Smolennikov Denys , Buriak Anna
Published: September 2024

The paper is dedicated to the analysis of corporate social and environmental responsibility (CSER) in the manufacturing companies. The methods of nonparametric statistics (Fechner coefficient and the Spearman rank correlation coefficient) and SWOT-analysis are applied. A sample comprising 63 Ukrainian manufacturing companies is analyzed. As a result of the research, which embodies direct and significant relationship between managed CSER activities by manufacturing Ukrainian companies, the transparency and accountability and their revenue from sales are presented in this paper, too. Direct relationship between CSER activities, transparency and accountability and their net profit (loss) is examined, as well. Additionally, the key peculiarities of manufacturing sector in Ukraine and barriers of CSER implementation and integration are investigated in the paper.
A Database Integrated System Based on SOAP Web Service
Authors: Haviluddin Haviluddin , Budiman Edy , Hidayat Nur Fauzan
Published: September 2024

An academic scientific digital data collection management (i.e., lecturers, researchers and students) in all educational institution, including Universitas Mulawarman, is very necessary. The purpose of digital data is to guarantee availability in a long term and the dissemination of scientific work data. However, data collection from various source publications (i.e., e-journals, e-theses, e-book etc.), are needed to be integrated into a repository system. In this paper has been presented a database integration model from a collection of publications or e-journals such as journals and proceedings into the repository system. A web service integration model has been implemented with Simple Object Access Protocol (SOAP) services, Web Service Definition Language (WSDL), Universal Description, Discovery, and Integration (UDDI), and NuSOAP (SOAP written in PHP language library). The results of this study indicated that the database of e-journals and proceedings on http://e-journals.unmul.ac.id is capable to be integrated into the repository system http://repository.unmul.ac.id which is an open access system.
Spur Gear Tooth Topology Optimization: Finding Optimal Shell Thickness for Spur
Gear Tooth produced using Additive Manufacturing
Authors: J. Muminovic Adis , Muminovic Adil , Mesic Elmedin , Saric Isad , Pervan Nedim
Published: September 2024

There is a lot of papers concerning gears topology optimization, but all of them are limited to the topology optimization of gear body. Gear tooth is not taken into consideration so far. Gear tooth was not optimized before because optimised structure could not be produced. By advancing of additive manufacturing technology, now, gear tooth can be produced in a form of shell body with empty space inside. In this paper, mass of spur gear tooth is optimized in relation to Von- Misses stress on critical places on the gear tooth. Optimization goal is to find optimal shell thickness of shell body spur gear tooth.
Data Management in a Holter Monitoring System
Authors: Todorov Todor , Bogdanova Galina , Noev Nikolay , Sabev Negoslav
Published: September 2024

The article presents a research on the methods for data organization and building semantic knowledge for a Holter Monitoring System. A conceptual scheme of this ontology is presented. The goal of this research is to study and identify parameters, analyze and classify data in HMS repositories using state-of-the-art technologies for analyzing and storing digital information, and building on-site HMC ontology.
Application of Multi-criteria Decision-making Methods for the Area of Recycling
Authors: Mikušová Nikoleta , Stopka Ondrej , Stopkova Maria
Published: September 2024

In this paper, authors deal with the possible application of multi-criteria decision-making methods for the solution within the recycling process. The introduction of the paper describes different ways of application concerning multi-criteria decision-making in the various areas by the help of a literature review. The second part of the paper describes the used methodology of a research, and the third of this paper presents results of the case study, realized in the production enterprise within recycling processes of plastic wastes. The solution comprising multi-criteria decision-making process can solve the evaluation of a technological device in order to elevate recycling of plastic waste. This procedure can be an instruction or guide for a suitable, effective and useful solution for the realization of waste management in enterprises.
An Influence of Dynamic Capability to Corporate Performance
Authors: Saenchaiyathon Krittapha , Liengjindathaworn Sirintorn
Published: September 2024

Performance of a company is typically considered and concerned in the present. The purpose of this study is to examine the relationship model among the constructs, namely dynamic capability, corporate image, innovativeness and corporate performance. The mail questionnaires were distributed, and 112 companies were returned for a total response rate of 32%. The method of partial least squares structural equation modeling (PLS-SEM) was employed to analyze the data. It found that dynamic capability affected directly the effects of innovativeness, and indirectly the effects of corporate image. Moreover, innovativeness and corporate image affected corporate performance.
Optimization of Business Processes in a Transport Company in The Republic of North Macedonia
Authors: Mitreva Elizabeta , Tashkova Stefanija , Gjorshevski Hristijan
Published: September 2024

The aim of this paper is to show how a service company, whose main activity is transport and storage, finds the bottlenecks in the work, and after that creates changes whose realization takes place through the optimization process. The subjects of the research in this paper are software solution for transport and storage that is not yet presented enough in the competing companies on the North Macedonian market. For this purpose, the work of one of the companies is represented, which is a user of the services regarding the transport company and benefits emanated by implementing such a software. Optimization of transport (transport routes) and storage are areas with strong potential for improvement. The operators in this sector are facing the so-called problem of “empty miles’’. By means of the help regarding transport management software, optimization of costs is achieved by finding the most affordable and economical routes.
Qualitative Substantiation of Strategic Decisions in the Field of Cost Management using the Methods of Economic Mathematical Modeling
Authors: Havlovska Nataliia , Savina Halyna , Davydova Oksana , Savin Stanislav , Rudnichenko Yevhenii , Lisovskyi Ihor
Published: September 2024

The adoption of high-quality and balanced decisions in the field of cost management requires appropriate information and analytical support, and the possibility of prompt calculation of alternative variants with reference to predicted results. It was proposed to use the means of economic mathematical modeling to solve the problem of forming tools to improve information analytical support for the cost management, namely, the discrete multi-criteria optimization method with the subsequent development of an optimization model comprising information analytical support for cost management. In the process of developing the model, it was taken into account that from a formal point of view the configuration regardinginformation analytical support for cost management is optimized, and this implies an increase in the speed and quality of management decision-making with a sufficient level of reliability (validity) and minimization of costs. Accordingly, in order to build an optimality criterion, two minimization problems are solved in the corresponding optimization model, both of which comprises information and analytical support for cost management. As a result regarding application of the model, the optimal configuration of information analytical support for cost management is formed, which allows optimizing costs and improving the quality of management decisions.
Finding the Holy Grail of Library Value: Characteristics of Academic Libraries at Universities with High Retention Rates
Authors: Szpunar Ruth , Bradley Eric
Published: September 2024

Objective – What are the characteristics of academic libraries at schools with high retention rates? To help libraries tell the story of their impact, we sought to determine which academic library practices were linked to high retention rates.
Methods – The investigators created a survey for the United States Great Lakes region library deans and directors in the Spring of 2022 with 19 questions about their library services and staffing. The survey was sent to 226 schools and had a response rate of 31%. We compared the resulting information to publicly available data on student retention from ACRL Metrics and IPEDS to look for correlations and associations.
Results – Statistical analysis used the Chi-squared test and the Pearson correlation to calculate association and correlation. This found six attributes of student connections with library staff and with unique local collections that were associated with statistically significant differences in retention rates and institutions. These attributes were institutions who: used students as archives student workers, used students to staff reference desks, conducted multiple library instruction sessions with the same class, had a staffed archive or special collection space, had an institutional repository that included student work, or had an Instagram account.
Conclusion – The survey results gave a clear profile of academic libraries with above average retention, particularly in terms of student focused initiatives and the curation of unique collections. Additionally, the survey gave a foundation, with recommendations, for future researchers to build upon.
Effects of combination of melatonin and L-carnitine on in vitro maturation in mouse oocytes: An experimental study
Authors: Chegini Raziye , Sadeghi Morteza , Shirian Sadegh , Sabbaghziarani Fatemeh , Aali Ehsan , Soleimani Pouriya , Ashtari Majelan Mohammad Reza , Zafari Fariba , Darabi Shahram
Published: September 2024

Background: Melatonin and L-carnitine are free radical scavengers with antiapoptotic and antioxidant properties that improve oocyte development.
Objective: This study aimed to find the possible effect of combining 2 antioxidant agents of melatonin and L-carnitine on oocyte morphology, maturation, apoptosis, and expression of bone morphogenetic protein 15 (BMP-15) and growth differentiation factor 9 (GDF-9) genes in a mice model.
Materials and Methods: To overstimulation, 60 female NMRI mice were injected intraperitoneally using mare serum gonadotropin. On day 2 post-injection, 70 cumulus-oocyte complexes were collected from each mouse. The collected oocytes randomly were then divided into 4 groups including, the control, melatonin, L-carnitine, and melatonin + L-carnitine groups. The morphology and maturation rate of the oocytes was evaluated using a light microscope. Apoptosis was identified by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling assay and the expression of BMP-15 and growth and differentiation factor GDF-9 genes was also evaluated by real-time polymerase chain reaction.
Results: Oocyte diameter significantly was increased in combination treatment of L-carnitine and melatonin compared to other groups (p < 0.05). L-carnitine group showed the highest mean percentage of oocyte cytoplasmic pattern. Results of the terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling indicated that the lowest apoptosis rate belonged to the melatonin + L-carnitine group. Moreover, the combination groups showed the highest number of oocytes and maturation rate. The BMP-15 and GDF-9 genes were significantly upregulated in all treatment groups compared to the control group.
Conclusion: Our results suggested a combination of melatonin + L-carnitine administration as a more effective choice for in vitro promotion of oocyte maturation.
Key words: In vitro oocyte maturation, Melatonin, L-carnitine.
Stereological and biochemical effects of thymoquinone on ovarian tissue toxicity induced by silver nanoparticles in NMRI mice: An experimental study
Authors: Ali Shariatzadeh Seyed Mohammad , Salmani Fatemeh , Moghanlo Hossein , Mahmoodi Monireh
Published: September 2024

Background: The toxicity of silver nanoparticles (AgNPs) has been proven in the female reproductive system. Thymoquinone (TQ) is a natural antioxidant and bioactive component of Nigella sativa.
Objective: We evaluated the efficacy of TQ on ovarian tissue following toxicity induced by AgNPs in female mice.
Materials and Methods: 24 female NMRI mice (5–6 wk, an average weight of 33 gr) were randomly divided into 4 groups (n = 6/each): control, AgNPs (500 mg/kg, gavage), TQ (2.5 mg/kg, intraperitoneal injection), and TQ+AgNPs. Mice were treated every day for 35 days. Serum levels of malondialdehyde (MDA), total antioxidant capacity (TAC), luteinizing hormone, and follicle-stimulating hormone were measured. The optical disector and stereological techniques were utilized to estimate the follicular count, their volume at different developmental stages, and the structure of ovarian tissue.
Results: In the AgNPs group, the serum concentrations of TAC (p = 0.01), luteinizing hormone (p < 0.001), follicle-stimulating hormone, the volume of corpus luteum (p < 0.001), and the number of follicles decreased significantly compared to the control group. Nevertheless, AgNPs significantly increased the MDA level. In the TQ+AgNPs group compared to the AgNPs group, a significant decrease in MDA level (p < 0.001) and a significant improvement in TAC (p = 0.03), and hormonal levels, the number of primary, preantral, and antral follicles (p = 0.04), and the volume of corpus luteum (p = 0.01) were observed.
Conclusion: TQ improved the number of follicles by reducing oxidative stress and lipid peroxidation in AgNPs-damaged ovarian tissue.
Key words: Nanoparticles, Silver, Thymoquinone, Ovary, Mouse.
Factors Affecting the Business Efficiency of Enterprises Under the Vietnam General Department of Defence Industry
Authors: Giang Luong Hoang
Published: September 2024

Enterprises under the General Department of Defense Industry (GDDI) play an important role in the defense industry of Vietnam, yet so far their business operations has had low efficiency. Therefore, it is necessary to clarify the factors affecting the business efficiency of GDDI enterprises, thereby having timely solutions for the new political and economic situation of the country. Previous studies have only focused on individual GDDI enterprises of different scale and resources and haven't been able to come up with a systemic solution. This article fills the gaps of previous studies by identifying factors affecting the business efficiency of GDDI enterprises between 2016 and 2021. By using quantitative research and linear regression model, the author identified factors affecting the business efficiency of GDDI enterprises and gave recommendations of financial solutions to improve business efficiency for these enterprises.
Potential of Liquid Smoke from Corn Cobs as an Antioxidant Source in Mackerel Preservation
Authors: Bukani Windi , Isa Ishak , Aman La Ode , Iyabu Hendri , Mohamad Erni , Kunusa Wiwin Rewini
Published: September 2024

This study aims to determine the antioxidant potential contained in liquid smoke using the DPPH method, as well as the effects of the concentration and soaking duration of liquid smoke from corn cobs on phenol content, moisture content, and organoleptic testing. The study first tested the antioxidant activity of liquid smoke from corn cobs by measuring the 50% Inhibition Concentration (IC50) value. Subsequently, liquid smoke was used at various concentrations (0%, 5%, 7%, and 10%) with a 60-minute soaking time, and a 7-day storage period was followed by testing for phenol content, moisture content, and organoleptic properties. Data analysis was performed using SPSS.26 with ANOVA testing. The results showed an IC50 value of 11.642 ppm in the antioxidant test of liquid smoke, indicating its effectiveness in neutralizing free radicals. The addition of liquid smoke to mackerel with different concentration variations affected phenol content, moisture content, and organoleptic properties. The optimal concentration of liquid smoke for use as a fish preservative is 10%
Crimes Related to Suicide: Qualification and Law Enforcement Issues
Authors:   Professor of the Academic Cluster of the Institute of Management and Territorial Development of the Immanuel Kant Baltic Federal University, Kulikov Aleksandr V. , Sheleg Olga A. ,   Associate Professor of the Department of Criminalistics of the Kaliningrad Branch of the Saint Petersburg University of the Ministry of the Interior of the Russian Federation
Published: September 2024

The article is devoted to a critical analysis of the content of suicidal crimes. It is stated that it is necessary to adopt new norms providing for criminal liability for these acts. The shortcomings of criminal law structures, including terms and definitions of various methods and forms of incitement to suicide, have been identified and investigated. In this regard, errors of qualification and law enforcement have been disclosed, which require elimination, including through the adoption of a separate decision of the highest court.
Effects of left internal mammary artery (LIMA) harvesting during coronary artery by-pass grafting surgery on benign breast diseases
Authors: Mola Serkan , Turan Ersin , Günertem Eren
Published: September 2024

Aim: Coronary artery bypass surgery of the primary conduits employed in coronary artery bypass grafting surgery (CABG) is the left internal mammary artery (LIMA), which has garnered considerable attention due to its favorable characteristics and outcomes. There are not enough studies examining the relationship between benign breast diseases (BBD) and LIMA removal. This study is one of the pioneering studies investigating the effects of LIMA removal after bypass surgery in patients with benign breast diseases. This study aims to evaluate the effect of LIMA removal on benign breast diseases in female patients undergoing bypass surgery by analyzing pre- and post-operative breast imaging.
Material and Methods: A total of 47 of 452 female patients who underwent bypass surgery between February 18, 2019, and December 31, 2021, were included in the study. All patients’ LIMA were harvested and evaluated, regarding any progression of benign breast diseases.
Results: There was a significant difference between the Breast Imaging Reporting and Data System (BI-RADS) classes of the patients before and after CABG (p<0.001). While 40.4% of the patients were BI-RADS class 1 preoperatively, this rate decreased to 14.8% postoperatively. Class 2 level did not show a significant difference, while class 3 level increased from 8.5% to 31.9%. Correlation analysis results between pre-op and post-op BI-RADS classes and age and Body Mass Index (BMI) were analyzed, but no significant correlation value was found. The correlations between pre-op and post-op BI-RADS grades and Hormone Replacement Therapy (HRT) were significant.
Conclusion: It can be concluded that LIMA harvesting during CABG surgery in female patients affects the occurrence of BBD. The change between the pre-op and post-op period was determined by mammography tests. It was shown that there was a significant change in BI-RADS scores on mammography after bypass surgery.
Serpentinites of the melange zone in the north of the Ray-Iz massif, hosting gem garnet (andradite-demantoid)
Authors: Lyutoev Vladimir , Makeev A. , Simakova Yu. , Terekhov E.
Published: September 2024

The chemical composition was studied; spectroscopic (FTIR, EPR) and X-ray diffraction analyses of serpentines from the host rocks of gem garnet andradite-demantoid occurrences of their melange zone in the northern part of the Ray-Iz massif were carried out. The quantitative species composition of the serpentinites was determined by the method of synchronous thermal analysis. We found that serpentines were represented by three varieties of lizardite-1T and chrysotile-2Mcl in sample PTM-1 and chrysotile-Orcl in sample PTM-2. The complex of conducted studies allowed specifying the mineral composition of the studied serpentinite samples and greenschist (chrysotile) facies of progressive contact metamorphism.
INSTAURAR ESPAÇOS DE PARTILHA: A FORMAÇÃO DE PROFESSORES EM ARTES VISUAIS
Authors: Lempek Trindade Monteiro Lívia , Da Rosa Silva Ursula
Published: September 2024

O presente artigo parte dos percursos docentes tramados na disciplina de Estágio Curricular em artes visuais, ensaia e repensa a formação inicial de arte educadores/as a partir da instauração de espaços de partilha. A escrita provoca compreender a formação docente como lugar praticado (CERTEAU, 2014) e desdobra-se sobre as docências que constituem-se pelo ato de partilhar, pelo contágio, pelo [com]tato. Sendo assim, com inspirações na A/R/Tográficas (IRWIN, 2013), propõe-se instaurar espaços de partilha como prática de metodologias outras. Assim, hooks (2017); Freire (1987); Nóvoa (2014); Pereira (2016) entre outros autores que aqui são trazidos, estão relacionados a este momento de instauração da troca e da trama que colaborativamente vão constituindo os saberes e a constituição de si docente. Em primeiro momento trata-se do espaço de patilha por meio das narrações de si e do diálogo, por fim, discorre sobre o caráter relacional e coletivo da arte/educação na perspectiva da formação estética.
Le séchage des placages dans l'industrie du contreplaqué
Authors: Villière A.
Published: September 2024

L'auteur a étudié le problème du séchage artificiel des placages non ouvrés destinés à la fabrication de contreplaqués. Au cours de cette opération, qui peut être effectuée dans des séchoirs classiques de type tunnel ou dans des séchoirs à jets de conception plus récente, divers incidents peuvent se produire et provoquer des défauts visibles tels que des fentes, des déformations, etc. mais aussi des défauts invisibles affectant par exemple le collage.L'influence des conditions de séchage est abordée : la durée du séchage (que les fabricants veulent réduire au minimum) ; la température (une température trop élevée peut être néfaste) ; l'hygrométrie (les placages sortaient souvent du séchoir avec des degrés d'humidité très divers) ; et la vitesse de l'air qui accélère le séchage (lorsque les placages sont très humides, les séchoirs à jets sont plus efficaces à cet égard).Il est ensuite fait mention des défauts résultant du séchage : les défauts visibles sont les ondulations et les fentes à l'extrémité, les fentes superficielles et internes et les déformations diverses. Les causes de ces défauts sont expliquées. Ensuite, il y a les défauts invisibles tels que l'affaissement, le manque d'homogénéité de l'humidité finale.Enfin, l'auteur passe en revue les différentes améliorations qui peuvent remédier à ces différents défauts. L'action de la vapeur à 100 °C. réduit les contraintes internes qui entraînent des fissures et des déformations, et prévient largement le phénomène d'affaissement. La vapeur surchauffée à 120 oC. permet d'obtenir en fin d'opération des placages dont l'humidité est assez homogène, de l'ordre de 4 à 5 %. Pour la mise en pratique de ces améliorations, les séchoirs à tuyère présentent des avantages certains.
Penerapan model Student Team Achievement Division untuk meningkatkan konsentrasi belajar peserta didik pada mata pelajaran Pendidikan Pancasila
Authors: Savitri Widianti
Published: September 2024

ABSTRAK
Penerapan Model Student Team Achievement Division untuk Meningkatkan Konsentrasi Belajar Peserta Didik. Penelitian ini bertujuan untuk mengetahui bagaimana peningkatan konsentrasi belajar peserta didik dalam mata pelajaran Pendidikan Pancasila menggunkan model pembelajaran Student Team Achievement Division. Penelitian ini merupakan penelitian tindakan kelas dengan menggunakan 4 komponen yaitu perencanaan tindakan, pelaksanaan tindakan, observasi, dan refleksi. Teknik pengumpulan data dalam penelitian ini menggunakan lembar observasi. Hasil penelitian menunjukan konsentrasi belajar peserta didik meningkat melalui penerapan model pembelajaran Student Team Achievement Division. Dengan hasil pada siklus I menunjukan persentase konsentrasi belajar peserta didik sebesar 52%. Pada siklus II, perbaikan yang dilakukan dapat meningkatkan konsentrasi belajar peserta didik dengan persentase sebesar 83%.
Kata kunci : student team achievement division, pendidikan pancasila, penelitian tindakan kelas
Nuclear Imaging in Orthopaedic Practice
Authors: Ibaseta Alvaro , Emara Ahmed , Pasqualini Ignacio , Jevnikar Benjamin , Colak Ceylan , Turan Oguz , Khan Shujaa T. , Deren Matthew E. , Piuzzi Nicolas S.
Published: September 2024

» Nuclear imaging techniques, including bone scintigraphy, labeled leukocyte scintigraphy, positron emission tomography (PET), and single-photon emission computed tomography (SPECT) combined with computed tomography (CT), have wide applications in orthopaedics for evaluating trauma, painful total joint arthroplasty, musculoskeletal infection, and orthopaedic oncology.

» Three-phase bone scintigraphy is a first-line, highly sensitive nuclear medicine study for evaluating orthopaedic pathology when initial studies are inconclusive. However, its specificity is limited, and findings may be falsely positive for up to 2 years after total joint arthroplasty because of physiologic bone remodeling.

» Labeled leukocyte scintigraphy or gallium scintigraphy can improve diagnostic accuracy in patients with a positive bone scan and suspected musculoskeletal or periprosthetic joint infection.

» 18-Fluorodeoxyglucose PET/CT demonstrates high sensitivity and specificity for diagnosing bone neoplasms, infections, and metabolic disorders. Emerging PET/magnetic resonance imaging technology offers reduced radiation exposure and greater soft-tissue detail but presents technical and cost challenges.

» SPECT/CT provides valuable functional and anatomic detail for characterizing the extent and location of bone pathology, serving as an important adjunct to other imaging modalities.

» Ultimately, the choice of nuclear imaging modality should consider the specific clinical context, diagnostic accuracy, impact on management, and cost-effectiveness on a case-by-case basis.
Cervical Collar Use Following Cervical Spine Surgery
Authors: McKeon John F. , Alvarez Paul M. , Castaneda Diego Martinez , Emili Uchechukwu , Kirven James , Belmonte Anthony D. , Singh Varun
Published: September 2024

Background:

The utility and risks associated with the use of cervical collars in the postoperative period after cervical spine surgery have been of debate. The purpose of this study was to systematically review the currently available evidence on the use of cervical collars after cervical spine surgery to assess their impact on outcomes.

Methods:

A literature search of the PubMed database was performed using keywords “cervical collar,” “anterior cervical discectomy and fusion (ACDF),” “posterior cervical decompression and fusion,” “laminoplasty,” “post-operative orthotic bracing,” “cervical decompression,” and “cervical orthosis” in all possible combinations. All English studies with the level of evidence of I to IV that were published from May 1, 1986, to December 3, 2023, were considered for inclusion.

Results:

A total of 25 articles meeting the inclusion criteria were identified and reviewed. Regarding anterior and posterior fusion procedures, cervical collar use demonstrated improved short-term patient-reported outcomes and pain control. While surgeon motivation for collar use was to increase fusion rates, this is not well drawn out in the literature with the majority of studies demonstrated no significant difference in fusion rates between patients who wore a cervical collar and those who did not. Regarding motion-preserving procedures such as cervical laminoplasty, patients with prolonged postoperative cervical collar use demonstrated increased rates of axial neck pain and decreased final range of motion (ROM).

Conclusion:

Surgeon motivation for postoperative cervical collar immobilization after completion of fusion procedures is to increase fusion rates and improve postoperative pain and disability despite this not being fully drawn out in the literature. After completion of motion-sparing procedures, the benefits of collar immobilization diminish with their prolonged use which could lead to increased rates of axial neck pain and decreased ROM. Cervical collar immobilization in the postoperative period should be considered its own intervention, with its own associated risk-benefit profile.

Level of Evidence:

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
A Comparison of Incisional Dressings and Negative-Pressure Wound Therapy for the Prevention of Infection and Wound Complications After Primary Total Hip and Knee Arthroplasty
Authors: Gusho Charles , Hoskins Wayne , Ghanem Elie
Published: September 2024

Background:

Incisional dressings may decrease wound complications and joint infection after total hip and knee arthroplasties (THA; TKA). However, there is no consensus on the superiority of a particular product. This study compared infection and wound complications among randomized controlled trials (RCTs) across various dressing types after primary THA and TKA.

Methods:

Scopus, Ovid/MEDLINE, PubMed, Cochrane Database of Systematic Reviews, and Cochrane Central Register of Controlled Trials were queried in May 2024. A frequentist model network meta-analysis of eligible prospective RCTs compared minor and major wound complications and dressing changes using P-scores.

Results:

Of 3,067 compiled studies, 12 RCTs of 1,939 patients with median (interquartile range) follow-up of 42 (382) days undergoing primary THA (n = 880, 45.4%) or TKA (n = 1,059, 54.6%) with alginate (n = 208; 10.7%), absorbent (n = 236; 12.2%), gauze (n = 474; 24.4%), or hydrofiber (n = 683; 35.2%) dressings or negative-pressure wound therapy (NPWT; n = 338; 17.4%) were included for meta-analysis. Compared with gauze, alginate and hydrofiber dressings were associated with fewer postoperative changes (mean difference [MD], −12.1; 95% confidence interval [CI], −15.08 to −9.09, p < 0.001; MD, −3.5; 95% CI, −6.30 to −0.74, p = 0.013, respectively). In a subanalysis, silver-ion hydrofiber also was associated with fewer changes (MD, −5.0; 95% CI, −5.70 to −4.39; p < 0.001). Overall, there was no statistically significant risk of increased minor nor major wound complications including superficial and deep infections among all dressing types and NPWT compared with gauze.

Conclusion:

Despite no association between wound complications nor infection risk among various incisional dressings and NPWT vs. gauze, the alginate, hydrofiber, and silver hydrofiber dressings had statistically fewer mean postoperative changes. Future studies are required to assess whether these dressings confer reduced infection risk.

Level of Evidence:

Therapeutic, Level I. See Instructions for Authors for a complete description of levels of evidence.
Transformation of suicide: from suicide to euthanasia
Authors:   Lomonosov Moscow State University, Skvortsov Aleksei
Published: September 2024

The article is a review of the Alexey Antipov’s book “Suicide and euthanasia: history and modernity”. The review shows how, from the fundamental scientific analysis of the phe­nomenon of suicide outlined in the monograph, the author deduces two main trends: sec­ularization and medicalization. Both imply the further liberalization of society’s attitude towards it. An analysis of the process of suicide medicalization demonstrates how the nat­ural scientific view of it first led to the practice of prevention, and then began to allow medical assistance in ending life. This view has manifested itself in two phenomena: euthanasia and physician-assisted suicide. If in the first case, assistance in ending life is carried out by a physician through deliberate intervention, then in the second, the physi­cian only indicates a means of taking life, leaving the suicider the choice to use it inde­pendently. The book shows that both phenomena emerged as an attempt to prevent spon­taneous individual suicide and place it within the framework of rational practice carried out under the supervision of competent persons. But the fact that, due to the legalization of euthanasia in some countries, medicine has become complicit in justifying deaths, fa­tally destroys the focus of medicine itself on protecting the value of life.
Review of the book “Man and Artificial Intelligence Systems”,edited by RAS Full Member V.A. Lektorsky(St. Petersburg: “Yuridicheskiy tsentr” Publ., 2022. 328 pp.)
Authors:   Institute of Scientific Information for Social Sciences, Russian Academy of Sciences, Sushchin Mikhail
Published: September 2024

The collection of papers edited by the full member of the Russian Academy of Sciences Vladislav A. Lektorsky discusses a range of issues raised by the rapid development of mo­dern artificial intelligence. Well-known philosophers, mathematicians, psychologists, neur­oscientists, economists, and lawyers, address many important issues. These issues include the fate of science and the idea of digital immortality in the context of widespread digitaliza­tion, the prospects for the development of artificial intelligence, the way of understanding personality in the era of ubiquitous intellectual assistants, and considering AI systems as subjects of law, etc. The authors argue that AI systems should be developed to be human-friendly rather than hostile.
Brain-Computer Interfaces (BCI) and Brain-to-Brain Interface (BBI) in the structure of NBIC-technologies (based on experimental data from the Research Center of Neurotechnologies, South Federal University)
Authors:   Saint Petersburg State University, Bokov German , Chapny Helen ,   Southern Federal University, Shaposhnikov Paul ,   Southern Federal University
Published: September 2024

The article presents a conceptual analysis of the main directions and methods of studying the human psyche, consciousness and brain in contemporary domestic and foreign research. The concept of “converging technologies” is considered in context of the creation of Artificial General Intelligence (AGI). It describes programs for the neuroscientific study of organization of psychic processes in the field of visualization of brain processes and the mapping method, which helps to understand how different parts of the brain can be structurally and functionally separated from each other. The publication pays special attention to understanding the possible use of Brain-Computer Interfaces (BCI) and Brain-to-Brain Interfaces (BMI) in the creation of AGI, “hybrid intelligence”. Brain interfaces are presented as fundamentally new channels of communication and control. An example of a biohybrid odor recognition system developed at the Research Center of Neurotechnology of the Southern Federal University is given. We are talking about the implementation of control through the BMI and mental commands of a bio­logical object – a rat. From the position of a body-oriented approach this work reveals the prob­lem of co-evolution of the body, consciousness, technology and social environment in the post-non-classical paradigm. It is concluded that modern neuroscience has a significant impact on understanding the functioning of the human brain, consciousness and cognitive processes. The feasibility of studying the possible use of BCI and BMI technologies in stimulating brain areas to create sensations equivalent to touch, etc. is noted. We are also talking about the use of biohybrid systems controlled through BMI technology as systems that combine the advan­tages of natural and artificial intelligence (with further elaboration of ethical issues).
Reflection on technology in social mythology of V.F. Odoevsky: the end of romantic mechanicism
Authors:   National Research University “Higher School of Economics”, Sidorina Tatiana
Published: September 2024

The article is devoted to the origins of reflection on technology in Russian philosophy and literature from the 19th and 20th centuries. Our focus is on the technical developments and the phenomenon of technology as it appears in the works of the Russian philosopher Vladimir Odoevsky. The appeal to Odoevsky’s ideas is of particular relevance in today’s context of the formation of technological societies and perspectives. It is with the achievements of mechanics and technology that Odoevsky correlates his hopes for the good development of man and society, he connects the enlightenment and education of young people. At the same time, Odoevsky sees the danger lurking in mechanism and rational knowledge. This danger will be the loss of integrity, decay and devastation that will befall the world that has survived the crisis of culture. Turning to the work of the thinker, we trace the trends in reflection on technology from a philosophical position, as well as in unity with the poetic and musical. The theoretical basis of the study is the opposition of Odoevsky’s technical and poetic as vectors of social development. As a result of the analysis, the author of the article comes to an ambivalent assessment of the role of technology by Odoevsky, contrasting the romanticization of technology with the negative prospects of the “industrial”, “egoistic” century, which are further developed in the domestic and foreign philosophy of technology and anti-utopia of the 20th and 21th centuries. In his futuristic projects, Odoevsky discovers the potential of scientific foresight, embodied in the achievements of modern science and technology. The transition in the assessment of technology from idealism to scientific realism and positivism, reasoning of a social orientation (“Russian Nights”, 1844), the key opposition in Odoevsky’s concept of the romanticization of technology to the negative prospects of technical expansion is further developed in the domestic and foreign philosophy of technology of the 20th and 21th centuries. The modern appeal to reflection on technology in Russian philosophy and literature is due to the expansive introduction of technology into the life of society, the rejection of ethical neutrality and the trend towards autonomy, as well as the demand for the modern educational process, university training programs for both humanitarian and technical orientation.