bluuebunny/crossref_metadata_2025 huggingface dataset:
Visible light photocatalytic degradation of HDPE microplastics using vanadium-doped titania
Authors:   Makerere University, Kampala, 7062 University Rd 7062, Uganda, Kinyua Esther Mbuci , Nyakairu George William Atwoki ,   Makerere University, Kampala, 7062 University Rd 7062, Uganda, Tebandeke Emmanuel ,   Makerere University, Kampala, 7062 University Rd 7062, Uganda, Odume Oghenekaro Nelson ,   Rhodes University, Grahamstown, 6140, South Africa
Published: April 2024

Efficient strategies are necessary to effectively remove microplastics (MPs), which are widely present in the environment. Among various techniques, photocatalysis using visible light has emerged as a promising ap-proach to tackle the growing concerns surrounding microplastic waste. This research explored the potential of vanadium-doped titanium oxide as a photocatalyst for degrading high-density polyethylene (HDPE) micro-plastics under visible light irradiation. Vanadium-doped titanium oxide photocatalyst was synthesized using the sol-gel method, and then characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible spectroscopy. The XRD analysis confirmed the formation of the anatase phase, while the SEM imaging provided valuable information on the catalyst’s morphology and elemental composition. The successful incorporation of vanadium ions into the structure was demonstrated by UV-visible spectrosco-py that revealed a redshift in the absorption edge. The vanadium-doped titanium oxide photocatalyst was em-ployed in the degradation of HDPE under visible light. The experimental results exhibited a significant reduc-tion in the mass of the plastic after 350 hours of illumination. V-TiO₂ achieved a maximum reduction of 5.7%, while TiO₂ nanoparticles showed only the 2% decrease. This study demonstrates the potential of V-TiO₂ as an efficient visible-light-driven photocatalyst for HDPE degradation, contributing to the mitigation of microplastics pollution in a sustainable manner.
The Effect of Motivation to Participate in Ultramarathon on Exercise Immersion and Persistence Intention
Authors:   Korean Industrial Technology Convergence Society, Lee Hak-Jun , Hwang Chan-Gyu
Published: April 2024

This study aim to explore the effect of motivation to participate in ultramarathons on the intention to continue, as well as to examine the mediating role of exercise immersion. The research model of this study was analyzed by considering internal motivation, external motivation, and lack of motivation, all sub-factors of the motivation to participate, as independent variables. The intention to continue exercising was designated the dependent variable, and exercise commitment as the parameter. The significant effect of participation motivation on the intention to continue, and validated the mediating effect of exercise immersion. The goal is to provide data for the advancement of ultramarathons.
Effects of Educational Service Quality of ICT Educational Institutions on Behavioral Intentions: Focusing on the Korea Radio Promotion Association Radio Broadcasting and Communication Education Center
Authors:   Korean Industrial Technology Convergence Society, Kim Seong-Woo , Hwang Chan-Gyu
Published: April 2024

This study investigated how educational service quality in the ICT field and learning commitment affect students' behavioral intentions. Prior research and empirical research methods were used to determine the research objectives. A survey was conducted with trainees at the Radio Broadcasting and Communication Education Institute of the Korea Radio Promotion Association, an ICT educational institution. An online survey was conducted from January 2 to 31, 2024, and 149 responses were analyzed among 734 mailers. Statistical analyses were performed using SPSS, version 20.0. Independent variables were verified by educational service quality with tangibles, reliability, responsiveness, assurance, and empathy as subfactors; behavioral intention as the dependent variable; and learning commitment as a parameter. Based on the analysis, the authors hope that the study results will be used as data to provide better educational service quality.
Effects of Cutting Conditions on Surface Roughness in Down-Milling of ABS Engineering Plastic
Authors:   Korean Industrial Technology Convergence Society, Lee Keun-Sang
Published: April 2024

In this study, we investigate surface roughness, which can serve as the basis for optimal cutting conditions for ABS engineering plastic processing, and propose optimal cutting conditions for down-cutting using machining center equipment. Accordingly, we aim to provide basic data for setting cutting conditions in the field.
The cutting conditions are compared with the values of surface roughness by substituting the values for cutting speed and feed as given in a textbook. Optimal cutting condition values are suggested by comparing different levels of surface roughness based on machining depth.
A Proposal of a Dental Hygienist Supply and Demand Index in Korea Using Principal Component Analysis
Authors:   Korean Industrial Technology Convergence Society, Jeong Taeyang , Kim Juhee , Kim Kyuseok , Kang Jung Yun
Published: April 2024

An imbalance in Korea between the supply and demand for auxiliary dental personnel has led to a growing shortage of dental hygienists in clinics. Despite the annual graduation of approximately 5,000 dental hygienists, the number of registered dental hygienists stands at 83,817 as of 2019, and the number of active practitioners account for only half of this total. This study aimed to address issues related to the supply and demand of dental hygienists and develop a regional dental hygienist supply-and-demand index. The research data included the number of dental clinics, graduates from dental hygiene departments, and job openings for dental hygienists on employment websites. Unsupervised machine learning-based principal component analysis, a statistical technique that synthesizes the essence of features from correlated factors, was used for data analysis. The results of developing a dental hygienist supply-and-demand index using principal component analysis revealed a low correlation of the index with the number of graduates from dental hygiene departments, and the highest correlation with the number of dental clinics. The data used and delivered in this study are expected to support the accumulation of knowledge for and the future development of a more accurate index.
Numerical Analysis of Cooling Performance Based on Flow Characteristics of Electric Vehicle Battery Cooling Plates
Authors:   Korean Industrial Technology Convergence Society, Kim Young-Ho , Lee Joo-Sang
Published: April 2024

The performance of lithium-ion batteries in electric vehicles is significantly affected by temperature. To ensure battery stability and extend its lifespan, an effective cooling system must be developed for heat dissipation. Therefore, researchers are focusing on liquid-cooled systems that use fluids with higher thermal conductivities compared with conventional air-cooling systems. However, studies regarding the flow shapes of crucial cooling plates in indirect liquid-cooling systems are scarce. In this study, the optimal flow shape of cooling plates with high cooling performance for dissipating heat generated during battery charging and discharging is determined. Four models with different structural features are analyzed via computational fluid dynamics simulations and then validated experimentally. Model 1, which features a small stagnation region, exhibits better cooling performance compared with Model 2, which features smoother curved flow paths. Models with large stagnant regions demonstrate inferior cooling performance, which is attributed to the effect of heat absorption, based on the residence time of the coolant in the cooling plate. Improvement in cooling efficiency is confirmed, which implies the feasibility of applying the model to enhance the performance of electric vehicles in the future.
A Study on Formative BMS Principles for Basic Design Education
Authors:   Korean Industrial Technology Convergence Society, Yoon Woo-Joong
Published: April 2024

This study proposes a method to enhance the efficiency of basic design education for students with little to no prior experience in design or fine arts. The proposed method focuses on applying essential formative design principles, referred to as formative BMS principles in this study. It provides concise information on a broad range of general design concepts such as proportion, contrast, balance, harmony, emphasis, unification, and change to support students in learning design principles intuitively, quickly, and easily. Moreover, tools, phenomena, situations, and so on that are commonly found in daily life are used as materials to implement design principles. Subsequently, cases of transforming daily materials into valuable design works are introduced to describe the relationship between these cases and formative BMS principles, which are explained from visual (quantitative) and conceptual (qualitative) perspectives in a way that facilitates a factual and specific approach to design. In addition, the proposed method comprises three processes that help students effectively learn about the relationship between design and formative BMS principles. This method enables students to recognize the significance of the comprehensive thinking required for design-based production, systematically develop practical layout expression techniques, and increase the aesthetic value of design outcomes, thereby amplifying design learning effects.
Development of a Vehicle-View Autonomous Parking Space Recognition Model Using Mask R-CNN and YOLO Models
Authors:   Korean Industrial Technology Convergence Society, Song Jung-Hyun , Shin Seung-Jung
Published: April 2024

A deep-learning model that allows autonomous cars to recognize available parking spaces when attempting to search for spaces to park in parking lots is proposed herein.
The proposed deep-learning model is designed to perform spatial recognition, i.e., partitioning the driving space and available parking space into segments from the perspective of the vehicle during autonomous driving. We propose the utilization of the Mask R-CNN model represented by a two-stage detection model in a computer vision field and the YOLO model represented by a one-stage detection model for the recognition of available parking spaces.
The effectiveness of the proposed model is confirmed via a parking-space-recognition experiment in large indoor parking lots using the output results of the abovementioned two models.
Optimization of Injection Molding of Biodegradable Polylactic Acid-Biosilica Composites
Authors:   Korean Industrial Technology Convergence Society, Hahm Ji-Yeon , Hong Seo-Yeon , Jeong Dae-Yong
Published: April 2024

Plant-based biodegradable polylactic acid (PLA) polymers have limited applications, such as in the production of disposable products using the extrusion method. This restricted usability is due to their low glass transition temperature and poor low-temperature molding properties. In the present study, we investigated the changes in PLA polymer properties induced by bioadditives and optimized the conditions of extrusion molding to commercialize biodegradable polymers using an injection molding process. Compared to pure PLA, the constructed PLA composite with nanosilica showed a 15% reduction in melt flow; however, the tensile strength increased by 13%, flexural strength increased by 15.9%, impact strength improved by 18.2%, and hardness increased by 40%, enabling injection molding even at temperatures of 180-190 °C. The mold flow of the nanocomposite and optimization analysis of product injection molding were conducted using a runner and fingate.
ACIDENTES BOTRÓPICOS E CROTÁLICOS NA EMERGÊNCIA: REVISÃO DE LITERATURA
Authors: Correia Pedro Pazinatto , Monteiro Victor , Figueiredo Felipe de Carvalho , Faleiro Matheus Daniel , BRITTO MATHEUS HENRIQUE OLIVEIRA
Published: April 2024

Acidentes ofídicos são causados pela mordedura de serpentes, podendo causar manifestações locais e sistêmicas. No Brasil, as principais serpentes envolvidas são as do gênero Bothrops e Crotalus, conhe
A humanização nos atendimentos de urgência e emergência relacionados á abordagem inicial de pacientes graves.
Authors: Furiotti Yasmim Dos Santos
Published: April 2024

INTRODUÇÃO : O ambiente hospitalar, criado em meados do século XVII, tinha como principal característica a morte, ou seja, o hospital era reconhecido não pela sua capacidade de cura e tratamento mas s
Physical and chemical characteristics of the surface of powders of saponite-containing material after its mechanical dispersion
Authors:   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov, Ayzenshtadt A. M. , Strokova V. V. ,   Construction Engineering Institute of the Belgorod State Technological University named after V.G. Shukhov, Nelyubova V. V. ,   Construction Engineering Institute of the Belgorod State Technological University named after V.G. Shukhov, Malygina M. A. ,   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov, Frolova M. A. ,   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov
Published: April 2024

Structural-phase transformations on the surface of powder systems of saponite-containing material after mechanical dispersion have been studied. The degree of crystallinity, adsorption capacity and specific surface energy depending on the time mode of grinding were used as compared information characteristics. It has been established that, despite the fact of the constancy of the degree of crystallinity, mechanical grinding of saponite-containing raw materials leads to its activation, which is expressed by a proportional increase in the sorption capacity of the obtained powders, an increase in the concentration of active adsorption centers and the value of the specific free surface energy. An increase in the time of mechanical grinding of a saponite-containing material leads to the production of samples with an increased (compared to the initial material) surface hydrophilicity.
Eudialyte of the Kola peninsula is a promising source of obtaining composite Zr – Ti – SiO2 sorbents of non-ferrous metals and radionuclides
Authors:   Tananaev Institute of Chemistry – Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”, Mayorov D. V.
Published: April 2024

Based on the products of hydrochloric acid decomposition of eudialyte concentrate, composite zirconium-titanium-silica sorbents with a SiO2 content of 10 – 30 wt.% were synthesized and their surface was modified into H+ and Na+-form. All samples were studied by chemical, X-ray phase, BET and BJH assays. It is shown that all the obtained samples of silica-containing Zr – Ti – SiO2 sorbents are mesoporous. At the same time, the pores have a predominantly wedge-shaped shape with open ends, and the maximum pore volume has pores with a diameter lying in the range of 10 – 50 nm (∼ 50 % of the total pore volume). Based on the obtained values of the specific capacity of the adsorption monolayer of the surface of the SiO2 samples and the value of the Gibbs energy change (ΔGo) during nitrogen sorption, it is concluded that the modification of the surface of the synthesized Zr – Ti – SiO2 sorbents does not affect the physicochemical properties of their surfaces and the mechanism of nitrogen sorption. The sorption activity of synthesized samples with respect to Cu2+, Co2+ and Sr2+ ions was studied in batch experiments. It was found that the modification of the obtained samples into the H+-form has less effect on their sorption capacity than their conversion to the Na+-form, does not depend on the content of SiO2 in them in the range of 10 – 30 % and decreases in the range of Cu2+ − Co2+ − Sr2+.
Influence of aluminosilicate cenospheres on the structure and properties of elastomeric composite materials based on ethylene-propylene-diene elastomers
Authors:   Plekhanov Russian University of Economics, Belyaeva N. O. , Buluchevskaya A. D. ,   Plekhanov Russian University of Economics, Mikhailova M. E. ,   Plekhanov Russian University of Economics, Sukhareva K. V. ,   Federal State Budgetary Scientific Institution “Institute of Biochemical Physics named after N.M. Emanuel” of the Russian Academy of Sciences,   Plekhanov Russian University of Economics, Mikhailov I. A. ,   Federal State Budgetary Scientific Institution “Institute of Biochemical Physics named after N.M. Emanuel” of the Russian Academy of Sciences,   Plekhanov Russian University of Economics, Chalykh T. I. ,   Plekhanov Russian University of Economics, Lyusova L. R. ,   Institute of Thin Chemical Technologies named after M.V. Lomonosov, Federal State Budgetary Educational Institution of Higher Education “MIREA – Russian Technological University”, Popov A. A. ,   Federal State Budgetary Scientific Institution “Institute of Biochemical Physics named after N.M. Emanuel” of the Russian Academy of Sciences,   Plekhanov Russian University of Economics
Published: April 2024

The use of industrial waste to develop new value-added materials and reduce their environmental impact is one of the most important tasks of science and industry, which can largely solve the problem of waste pollution. This work is aimed at studying the effect of different concentrations of fly ash aluminosilicate cenospheres on the structure and properties of elastomeric composites. In this work, using laboratory rollers, composite materials based on ethylene-propylene-diene rubber (EPDM-40) with different mass fractions of fly ash (10, 20 and 30 %) were obtained. Using the method of optical microscopy, the microstructure of mixtures of EPDM and aluminosilicate cenospheres was studied and it was shown that the filler content of more than 30% increases the content of larger cenosphere agglomerates in the structure, which indicates interfacial separation in mixtures, probably due to the fact that mechanical mixing on mixing equipment does not allow to achieve a uniform distribution of the filler throughout the elastomeric matrix. The IR spectra show the appearance of new absorption bands in the region. 1400 – 800 cm–1, corresponding to Si – O – Si stretching vibrations present in aluminosilicate cenospheres. According to the thermogravimetry data of the studied compositions, the introduction of aluminosilicate cenospheres contributed to a slight increase in the thermal stability of the tested composition with a cenosphere content of more than 30%. The influence of the concentration of aluminosilicate cenospheres on the resistance of composites to aggressive media was analyzed and it was found that the introduction of a cenosphere filler in an amount of 10 to 30 % in a mixture based on EPDM can increase the oil and petrol resistance of materials.
Synthesis of (Ti,Cr)xCy carbides in VT6 alloy by direct laser deposition
Authors:   Kazan national research technical university named after A.N.Tupolev, Gorunov A. I.
Published: April 2024

The possibility of forming carbides of the (Ti,Cr)xCy type in the Ti6Al4V alloy by the method of direct laser deposition of materials (DLD) is shown. A new method for the synthesis of carbides of the (Ti,Cr)xCy type consists in preliminary laser cladding of carbon fibers with chromium, adding them to the VT6 powder mixture, and fusing the resulting DLD composition. Thus, a new Ti6Al4V/CFs/Cr alloy was obtained. The formation of carbides of the CrxCy type was revealed in the coating on carbon fibers (CF/Cr). The appearance of CrxCy carbides in CF/Cr samples is due to the interaction of carbon with chromium as a result of laser processing. The average microhardness of the Ti6Al4V/CFs/Cr alloy was 700 ± 100 HV0.01. At the same time, the hardness of the detected carbides (Ti,Cr)xCy in the Ti6Al4V/CFs/Cr alloy was 1000 ± 40 HV0.01. During the DLD process, the carbon fiber can be completely or partially dissolved. In the composite material Ti6Al4V/CFs/Cr, carbides (Ti,Cr)xCy are formed. It is shown that the hardness of the detected carbides is 2 times higher than the hardness of the composite material. It has been established that the friction coefficient of the VT6 alloy under increased load decreases by 1.5 times after 20 min of testing, while the friction coefficient of the Ti6Al4V/CFs/Cr alloy remains stable and equals 0.27 over the entire test interval.
Phase composition and surface morphology of BRO10C10 bronze after its electric spark treatment with anode material of a similar composition
Authors:   Institute of High Technologies and New Materials of National Research Mordovia State University, Pankin N. A. , Velichko S. A. ,   Institute of Mechanics and Energy of National Research Mordovia State University, Mishkin V. P. ,   Institute of High Technologies and New Materials of National Research Mordovia State University, Ilyin S. V. ,   Institute of High Technologies and New Materials of National Research Mordovia State University
Published: April 2024

The coating on the surface of BrO10C10 bronze was studied by scanning electron microscopy and X-ray diffractometry. It was obtained by electrospark processing with an anode material with a composition similar to that of the substrate. X-ray studies of the phase composition revealed the presence of phases of the “copper – tin” system (Cu, α-(Cu; Sn), Cu3Sn, ε-Cu3Sn and Cu5.6Sn) and lead. The incorporation of atmospheric elements and initial bronze components into lead leads to the formation of regions with a distorted crystal lattice. An increase in the energy of a single pulse of an electric spark discharge is accompanied by a decrease in the α-(Cu; Sn) phase and an increase in the content of ε-Cu3Sn and Cu5.6Sn. The ratio of intensities indicates the absence of a predominant orientation of growth (texture) in the electrospark coating. Scanning electron microscopy data indicate the presence of melted areas, pores, spherical and oval inclusions, irregularly shaped particles, cracks, rounded pits, etc. in the surface layer. The main reason for the presence of melted areas is high temperatures in the interelectrode region during an electric spark discharge. The appearance of surface cracks is primarily associated with the occurrence of high thermal stresses and interelectrode mechanical contact. The presence of spherical/oval particles is a consequence of the interaction of liquid droplets with the surface of the cathode substrate. Irregularly shaped particles appear as a result of explosive emission from the edges of the erosion crater of the anode material.
Diaphragm and membrane for alkaline water electrolysis with zirconium hydroxide hydrogel as hydrophilic filler
Authors:   National Research University “Moscow Power Engineering Institute” (MPEI), Kuleshov V. N. , Kurochkin S. V. ,   National Research University “Moscow Power Engineering Institute” (MPEI), Kuleshov N. V. ,   National Research University “Moscow Power Engineering Institute” (MPEI), Gavrilyuk A. A. ,   National Research University “Moscow Power Engineering Institute” (MPEI), Klimova M. A. ,   National Research University “Moscow Power Engineering Institute” (MPEI), Grigorieva O. Yu. ,   National Research University “Moscow Power Engineering Institute” (MPEI)
Published: April 2024

The paper presents data on a new type of separation materials for alkaline water electrolyzers: a diaphragm synthesized by the phase inversion method and a multilayer microfilm membrane with zirconium hydroxide hydrogel as a hydrophilic filler. Experimental data are presented on their porosity, electrical conductivity, gas density, as well as the results of their tests as part of an alkaline electrolyzer battery in comparison with a porous diaphragm based on polysulfone with a hydrophilic filler (TiO2), synthesized by the traditional method of phase inversion. The advantages and disadvantages of new materials are determined, the ways of further research and development are determined.
Influence of TiC and TiB2 reinforcement on the properties and structure of aluminum alloy AMg2
Authors:   FSBEI HE “Samara State Technical University”, Sherina Yu. V. , Luts A. R. ,   FSBEI HE “Samara State Technical University”, Kachura A. D. ,   FSBEI HE “Samara State Technical University”
Published: April 2024

The paper presents the results of a study devoted to studying the effect of the type of reinforcing phase on the structure and properties of an aluminum matrix composite material (AMCM) obtained by the method of self-propagating high-temperature synthesis (SHS) in a melt. In the course of the research, an analysis was carried out and a choice was made to use titanium carbide and titanium diboride as reinforcing phases. During the experimental synthesis of SHS in the melt, composite materials AMg2 – 10 % TiC and AMg2 – 10 % TiB2 were obtained. In the course of further studies, microstructural, micro-X-ray spectral and X-ray phase analyzes were carried out, according to the results of which it was revealed that the technology used leads to the formation of the target TiC phase in the AMg2 – 10 % TiC composite and TiB2, Al3Ti phases in the AMg2 – 10 % TiB2 composite. On the synthesized samples of composite materials, an assessment was made of physical and mechanical characteristics: hardness, porosity and electrical conductivity. It was found that the hardness of AMCM obtained by the SHS method based on the industrial alloy AMg2 reinforced with titanium carbide is higher than the hardness of AMCM reinforced with titanium diboride by 44 MPa. Also, the porosity of the AMg2 – 10 % TiC composite is lower than that of the AMg2 – 10 % TiB2 composite by 6 %. This paper also shows the effect of heat treatment on the physical and mechanical properties of AMg2 – 10 % TiC and AMg2 – 10 % TiB2 composite materials. Carrying out additional heating leads to an increase in the hardness values of composite materials, as well as to a decrease in porosity. According to the results of a complex of studies, the use of titanium carbide is recommended as a reinforcing phase.
The influence of migration of additives in polypropylene-based films on surface properties under the action of low-temperature corona discharge plasma
Authors:   Kazan (Volga Region) Federal University, Lyakhovich A. M. , Galikhanov E. M. ,   Kazan (Volga Region) Federal University, Bikeev O. A. ,   LLC UK “Kamskie Polyany Industrial Park”, Vorobyev V. L. ,   Udmurt Federal Research Center of the Ural Branch of the Russian Academy of Sciences, Institute of Physics and Technology
Published: April 2024

The paper considers the modification of films based on polypropylene containing technological fluorinated additives in corona discharge plasma. X-ray photoelectron spectroscopy and atomic force microscopy were used to study the elemental and chemical composition, relief, adhesive and deformation properties of the film surface before and after plasma modification. It has been established that the modification of a film in a corona discharge plasma leads to the appearance of a technological additive based on fluorine on the surface of the film. In this case, the chemical composition and structure of the film changes, local structures appear on the surface of the film containing atoms of oxygen, fluorine and carbon, which have electrical conductivity different from the electrical conductivity of the surface of the original film. Modification in plasma leads to an increase in the elastic and adhesive properties of the film surface.
Attentional Capture by Abrupt Onsets: Foundations and Emerging Issues
Authors: Zhang Han , York A. Kane , Jonides John
Published: April 2024

The study of attentional allocation due to external stimulation has a long history in psychology. Early research by Yantis and Jonides suggested that abrupt onsets constitute a unique class of stimuli that captures attention in a stimulus-driven fashion unless attention is proactively directed elsewhere. Since then, the study of visual attention has evolved significantly. This article revisits the core conclusions by Yantis and Jonides in light of subsequent findings and highlights emerging issues for future investigation. These issues include clarifying key concepts of visual attention, adopting measures with greater spatiotemporal precision, exploring how past experiences modulate the effects of abrupt onsets, and understanding individual differences in attentional allocation. Addressing these issues is challenging but crucial, and we offer some perspectives on how one might choose to study these issues going forward. Finally, we call for more investigation into abrupt onsets. Perhaps due to their strong potential to capture attention, abrupt onsets are often set aside in pursuit of other conditions that show attenuation of distractor interference. However, given their real-world relevance, abrupt onsets represent the exact type of stimuli that we need to study more to connect laboratory attention research to real life.
Lessons Learned: Musings on Teaching Technology in Library and Information Science
Authors: Maurici-Pollock Danielle , Williams Rachel , Dumas Catherine
Published: April 2024

Information professionals integrate a variety of technologies and tools into their work practices and are often introduced to these while they are students in library and information science programs. This commentary examines recent trends, barriers, and potential approaches in teaching technology for LIS graduate students. Here we draw on our expertise teaching several technology topics, including an introductory technology survey course for graduate students, programming and database management, and intersectionality and technology. Rooted in a reflection on our perspectives as technology educators, our analysis focuses on this central question: How can library and information science instructors foster the confidence, curiosity, and comfort that students need to continually engage with an ever-changing technological landscape throughout the course of their careers?
Estabilização pré-anestésica no paciente em sepse
Authors: Seguetto Larissa , Griebeler Neide Maria
Published: April 2024

Sepsis is an organic dysfunction of significant relevance in the rate of hospitalizations and deaths in veterinary clinics and hospitals. Patients may arrive in a state of shock, presenting serious systemic changes such as hypotension, hypovolemia, tissue hypoperfusion and metabolic acidosis, among other disorders that can compromise the animal's life during an anesthetic and surgical procedure. Performing surgical procedures on dogs and cats with sepsis requires a meticulous approach, adapted to the individual conditions of each patient, where maintaining tissue perfusion and oxygenation is of great importance. Therefore, to manage hypotension, volume replacement with crystalloids is recommended. If there is no response, the use of vasoactive agents is indicated, such as norepinephrine, adrenaline, dobutamine and vasopressin. Furthermore, the use of corticosteroids such as hydrocortisone is recommended in cases of hypotension refractory to fluid therapy and vasopressors. The purpose of this literature review is to carry out a brief analysis of sepsis, highlighting the main measures to stabilizing septic patients in the pre-anesthetic period. Our central focus lies in discussing the approach used for hemodynamic stabilization before the patient enters the operating room. A more in-depth understanding of anesthetic considerations in cases of sepsis may result in more efficient and less risky management of these patients, with a potential positive impact on the well-being of these individuals in such conditions.
RECOMMENDATIONS FOR MODELLING ELEMENTS FROM THIN-WALLED STEEL SECTIONS
Authors:   Industrial University of Tyumen, Korsun Natalya D. , Prostakishina Darya A. ,   Industrial University of Tyumen
Published: April 2024

Despite the increase in the growth rate of construction with the use of steel thin-walled sections, the building code for the design and calculation of these structures has a number of conventions and indicates the preferred use of the results of experimental studies in the design. Fullscale tests are generally not available during design, so numerical modelling is a correct alternative. The analysis of existing scientific literature shows that there is no consensus among researchers regarding the main parameters of the models and the modelling algorithm in general, so the aim of the paper is to develop recommendations for modelling thin-walled sections. The results of the study for object made from a coupled sigma profile under axial compressive force conditions let us develop key recommendations for modelling including the use of finite element type, finite element mesh parameters, the mechanism of application of boundary conditions, external loads and other model parameters. The results were verified by analytical methods of thin-walled sections calculation. The obtained convergence of the results indicates the possibility of using these recommendations in the design and calculation of thin-walled structures.
EFFICIENCY OF VENTILATION SYSTEMS WITH INTERMITTENT OPERATION
Authors:   Industrial University of Tyumen, Afonin Konstantin V. , Zhilina Tatyana S. ,   Industrial University of Tyumen, Zagorskaja Alla A. ,   Industrial University of Tyumen, Molostova Irina E. ,   Industrial University of Tyumen
Published: April 2024

Effective management of the ventilation system is one of the main priorities for improving the energy efficiency of public buildings today. There are two types of energy saving in ventilation systems. The first is saving electrical energy, the second is saving thermal energy. For the desighned shopping centre "Magnit" (Tyumen) the authors proposed the ventilation system with intermittent operation. In the ventilation system of the desighned building, we calculated and selected energy consuming equipment of Russian manufacturers. The airflow rate of the ventilation system depends on the number of visitors and takes into account the irregularity of visits to the designed shopping centre. A graph of the distribution of the required airflow rate by period was plotted. An automation scheme for the ventilation system was proposed. The consumption of electricity of the ventilation system with intermittent operation during the year and the annual heat consumption were calculated. Calculations showed that the annual energy cost for ventilation system with intermittent operation in the projected building would be 1.72 times less than for the permanent system, the equipment would pay off in 0.4 years. Thus, it is possible to speak about the effective application of ventilation system with intermittent operation in the designed buildings with irregularity of visits.
OBJECTIVE AND SUBJECTIVE ASSESSMENT OF THE DEGREE OF ADHESIVE PROCESS IN ENDOMETRIOSIS
Authors:   Kuzbass Regional Clinical Hospital named after S.V. Belyaev, Kemerovo, Russia, Yushchenko Marina A. , Kotova Alexandra A. ,   Kuzbass Regional Clinical Hospital named after S.V. Belyaev, Kemerovo, Russia, Elgina Svetlana I. ,   Kemerovo State Medical University, Kemerovo, Russia, Rudaeva Elena V. ,   Kemerovo State Medical University, Kemerovo, Russia, Moses Vadim G. ,   Kuzbass Regional Clinical Hospital named after S.V. Belyaev, Kemerovo, Russia; Kemerovo State University, Kemerovo, Russia, Moses Kira B. ,   Kuzbass Regional Clinical Hospital named after S.V. Belyaev, Kemerovo, Russia, Center Yael ,   Soroka Medical Center, Be'er-Sheva, Israel
Published: April 2024

A subjective and objective assessment of the severity of the adhesive process in the abdominal cavity was carried out in 50 women with severe endometriosis. Subjective assessment of the degree of adhesions was 3 (3:3) points – severe. An objective assessment of the degree of adhesive process according to R-AFS was 8 (7:9) points, which corresponded to stage II of the disease. PAI was 23.5 (16:29) points – severe adhesive process. The subjective assessment of pelvic the degree of adhesions in women with severe endometriosis coincided with the objective assessments of R-AFS and PAI. Perhaps these results are due to the experience of the surgeon who performed the surgery. Despite the results obtained, endometriosis surgery should be guided by studies based on the design of a higher level of evidence (level evidence), indicating the effectiveness of more accurate and objective methods for assessing the degree of adhesions in the abdominal cavity.
OSTEOPENIA AS A MANIFESTATION OF IDIOPATHIC HYPERCALCIURIA IN CHILDREN
Authors:   Altai State Medical University, Barnaul, Russia, Mikheeva Natalia М. , Strozenko Lyudmila A. ,   Altai State Medical University, Barnaul, Russia, Zverev Yakov F. ,   Altai State Medical University, Barnaul, Russia, Lobanov Yury F. ,   Altai State Medical University, Barnaul, Russia, Tekutyeva Nadezhda A. ,   Altai State Medical University, Barnaul, Russia, Fedorovsky Alexander F. ,   Altai State Medical University, Barnaul, Russia, Fedoseev Mikhail A. ,   Altai State Medical University, Barnaul, Russia
Published: April 2024

Idiopathic hypercalciuria (IH) can lead to the development of osteopenia and osteoporosis in childhood. Vitamin D and its receptor, encoded by the VDR gene, play a major role in maintaining normal calcium levels in bone tissue. The purpose of the study: to study the state of bone mineral density in children with idiopathic hypercalciuria and the association of vitamin D receptor (VDR) gene polymorphisms with osteopenia. Materials and methods. The study included 35 children with IH aged 5 to 17 years with a history of fractures and/or decompensated caries. The children were subjected to X-ray densitometry to calculate the Z score in the lumbar spine and proximal femurs. A group of children with IH (n=20) underwent a study of the level of 25-OH vitamin D in blood plasma and a genetic study for the presence in genetic polymorphisms of the VDR gene: BsmI Polymorphism IVS10+283G>A, A-3731G (Cdx2), FokI Polymorphism; Ex4+4T>C. Results. A decrease in BMD was detected in 68.6% of children with IH, while 2 patients aged 15 and 17 years had signs of osteoporosis. The homozygous Ex4+4 CC genotype of the VDR (Fokl) gene was significantly more common in patients with idiopathic hypercalciuria. For the remaining genotypes of the VDR enzyme gene, no statistically significant differences could be detected (p>0.05). Conclusion. Idiopathic hypercalciuria in children often leads to a decrease in bone mineral density, which should be taken into account when treating children with this pathology. A genetic predictor of osteopenia in children with IH may be the carriage of the homozygous genotype (rare allele) Ex4+4 CC of whose VDR (Fokl) gene, the study can be used for early diagnosis and prevention of the development of osteoporosis.
DYNAMICS OF INDICATORS OF THE GENERAL INCIDENTITY OF CHILDREN IN DIFFICULT LIFE SITUATION, BY THE RESULTS OF MEDICAL DISPASSION FOR 5 YEARS
Authors:   Northern State Medical University, Arkhangelsk, Russia, Pastbina Irina M. , Makarova Valeria I. ,   Northern State Medical University, Arkhangelsk, Russia
Published: April 2024

A specific method of healthcare practice, which combines the tasks of preventive and therapeutic measures, is a medical examination, which in Russia is carried out annually among children in difficult life situations, staying in stationary institutions. The purpose of the study is to evaluate the effectiveness of medical examinations in terms of the dynamics of general morbidity in children staying in hospital in the Arkhangelsk region. Methods. A statistical study was carried out using the method of documentary observation, the calculation of incidence rates per 1000 examined children aged 0-17 years; assessment of growth (loss) rates of indicators. Results. The long-term average for 2016-2020 is the overall morbidity rate - 3480.23 (per 1000), an increase in 10 classes of diseases, the maximum for infectious diseases, neoplasm, blood diseases, a decrease in 5 classes, the maximum for diseases of the circulatory system, dispensary observation coverage decreased from 60.9 to 51.5%. Conclusions The low effectiveness of medical examination of children in difficult life situations for 5 years was revealed in the form of an increase in the overall morbidity rate (from 3145.0 to 3800.0 per 1000) and a decrease in the initially low coverage of dispensary observation.
Überlegung zur relativen Testierfähigkeit im deutschen BGB
Authors:   The Korean Society Of Family Law, Kim Sung-Mi
Published: April 2024

Die Frage der Testierfähigkeit im Falle von Demenz und anderen psychischen Erkrankungen in einer alternden Gesellschaft ist sowohl in Deutschland als auch in Südkorea eine gesellschaftliche Herausforderung.
Das kor.BGB enthält jedoch keine spezifischen Bestimmungen zur Testierfähigkeit: Die einzige Bestimmung, die eine eingeschränkte Testierfähigkeit anerkennt, ist Artikel 1063, da die koreanische Rechtsprechung die Testierfähigkeit im Allgemeinen in Übereinstimmung mit der im kor. BGB definierten Testierfähigkeit behandelt.
In Deutschland hingegen ist die Testierfähigkeit in Artikel 2229 des de. BGBs geregelt. Darüber hinaus wird in Deutschland die so genannte “relative Testierfähigkeit” diskutiert, zu der der BGH jedoch keine eindeutige Position bezogen hat. Außerdem wird diese relative Testierfähigkeit in Deutschland allmählich ausgeweitet.
Bei der relativen Testierfähigkeit handelt es sich um die Rechtsfähigkeit, die auf individueller Basis anerkannt wird, je nach dem individuellen Status des Erblassers und der Komplexität des Nachlasses.
Es ist jedoch schwierig, allein anhand des Vorhandenseins der Testierfähigkeitsregelung zu bestimmen, welches Rechtssystem besser ist. Dennoch ist die deutsche Diskussion über die Testierfähigkeit, insbesondere die relative Testierfähigkeit, lehrreich für Korea, da die Gerichte in beiden Ländern im Interesse des Einzelnen, auf der Grundlage individueller Fakten entscheiden müssen.
Es ist zu hoffen, dass die deutsche Diskussion einen Anhaltspunkt für die Lösung aktueller oder zukünftiger Erbstreitigkeiten in der alternden koreanischen Gesellschaft liefern kann.
Sentinel node in breast cancer as an indicator of quality in medical care: Evaluation of statistics in Colombia
Authors: González Mariño Mario Arturo
Published: April 2024

BACKGROUND: Sentinel lymph node biopsy in breast cancer is considered the standard of staging in cases of clinically negative lymph nodes. Its omission in favor of axillary dissection generates significant morbidity. OBJECTIVE: To determine the total number of sentinel node biopsy procedures in breast cancer in Colombia from 2017 through 2020, model and analyze them as if they were performed only in stage I breast cancer patients, and integrate their results into the concepts of quality of medical care. METHODS: Search in a database of the Ministry of Health and Social Protection of Colombia with sentinel lymph node biopsy codes, and filters of breast cancer and year. Their results are contrasted with the number of cases in stage I of breast cancer. RESULTS: Breast cancer TNM staging was reported in 22154 cases, 3648 stage I. In the same time frame, the number of sentinel lymph node biopsies for breast cancer in Colombia was 1045, 28.64% of the total cases reported in stage I. CONCLUSIONS: Colombia is far from complying with the standard indicator of sentinel lymph node biopsy. It is recommended to concentrate breast cancer cases in hospitals that provide the conditions for its performance.
Ultrasound elastography predicts anticoagulation in lower extremity deep vein thrombosis
Authors: Zhang Ao-Yi , Dong Ya-Xin , Tan Yan-Di , Dian-Shen  , Heng-Sun  , Nie Shu-Ting , Shao Yuan-Yuan , Feng-Xian  , Hu Wen-Shu , Li Xin-YI , Tao-Xu  , Li An-Ni , Liang-Xu  , Chang-Zhou
Published: April 2024

OBJECTIVE: To investigate predictors of anticoagulation efficacy in deep venous thrombosis (DVT) by ultrasound elastography (UE). METHODS: The basic clinical, laboratory and ultrasound treatment data of fifty-eight patients with DVT were collected and analyzed. Then the results of ultrasound after 3-month anticoagulation treatment were compared among different groups. Multiple logistic regression analysis was used to identify independent risk factors that affected anticoagulation efficacy. The predictive efficacy of each independent risk factor was accessed by drawing operating characteristic (ROC) curves. RESULTS: According to the regression analysis, the elastic modulus (OR = 0.631, P = 0.001) and strain rate ratio (OR = 0.332, P = 0.006) were identified as independent risk factors for the effectiveness of anticoagulation therapy in patients with DVT. According to the ROC curves, elastic modulus and strain rate ratio could predict effective anticoagulation therapy for DVT, and the optimal threshold values were 22.10 kPa and 1.80 respectively. The corresponding AUC values were 0.879 and 0.854, with a sensitivity of 71.4% and 59.5%, a specificity of 93.7%, and a Youden index of 65.1% and 62.7%, respectively. CONCLUSIONS: The elastic modulus (≤22.10 kPa) or strain rate ratio (≤1.80) of the thrombus were independent predictors for the effectiveness of anticoagulation therapy.
The influence of employees’ regulatory focus on knowledge hiding behavior
Authors: Guo Yuheng , Li Jie , Wang Wangshuai
Published: April 2024

BACKGROUND Knowledge sharing is a prerequisite for organizational success, while knowledge hiding is often detrimental to organizational development.

OBJECTIVE Drawing upon regulatory focus theory and interactionism, this research aims to investigate how regulatory focus influences employees’ knowledge hiding and the moderating role of cooperative climate.

METHODS Data were collected through a time-lagged survey of 320 full-time employees enrolled in a professional training program at a Chinese university. Confirmatory factor analysis, descriptive analysis, hierarchical regression analyses, and bootstrap analysis were some of the analytical techniques used.

RESULTS The results indicate that promotion focus has a positive impact on knowledge hiding, whereas prevention focus is negative to knowledge hiding. Furthermore, cooperative climate moderates the influence of regulatory focus on knowledge hiding.

CONCLUSIONS This study contributes to our understanding of the important role of employees’ regulatory focus on knowledge hiding behavior in the workplace.