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Found 5164 publications

Shear buckling behaviour of beams with partial-depth stiffeners at the support

Publication Name: Thin Walled Structures

Publication Date: 2025-02-01

Volume: 207

Issue: Unknown

Page Range: Unknown

Description:

This paper presents the findings from experimental tests and numerical simulations on plate girders with various end post configurations. While EN 1993-1-5:2024 provides design rules for both rigid and non-rigid end posts, it does not address the shear resistance of partially stiffened webs. The use of partial-depth stiffeners faces risks due to the lack of thorough investigation into their mechanical behaviour. To explore this issue, small numbered experimental tests and large numbered parametric studies on beams with different web slenderness were conducted using advanced numerical simulations. The results indicated that the shear buckling capacity of girders is lower than the design recommendation when the web stiffener height is <50 % of the web height. For girders with full-height stiffeners, EN 1993-1-5:2024 yields safe results. The accuracy of the EN 1993-1-5:2024 design rule for partially stiffened beams was also evaluated and new and shear buckling design curves were proposed for girders with partial-depth stiffeners.

Open Access: Yes

DOI: 10.1016/j.tws.2024.112622

The effect of mint addition on the physicochemical and organoleptic properties of strawberry sorbets

Publication Name: Food Chemistry X

Publication Date: 2025-02-01

Volume: 26

Issue: Unknown

Page Range: Unknown

Description:

The study aimed to produce, analyse, and evaluate the consumer acceptance of a functional peppermint-, and spearmint-enriched (0.5,1,2 %) sorbet, which contains only natural substances in its composition, to meet today's popular health-conscious consumer trends. Regarding acid composition, the sorbets contained malic acid, succinic acid, and citric acid. Sorbets regarded of water-soluble sugars, contained sucrose in the lowest concentration, followed by glucose, and the amount of fructose, which is typical for fruits, was the highest. The sorbets' TPC and TAC contents were determined to be between 510.72 and 743.77 mg GAE/kg, and 906.64 and 1137.67 mg AAE/kg respectively. The average melting rate of the desserts was 0.16–0.22 g/min, and based on consumer acceptance, the control and the samples added with 0.5 % spearmint and peppermint mint were the most favorable. The sorbets containing 1 % and 2 % mint had too intense menthol flavor, thus the enjoyment value of the products was reduced based on consumer feedback.

Open Access: Yes

DOI: 10.1016/j.fochx.2025.102271

Impact of technological advancement and greener energy on sustainable agriculture in Asia: Evidence from selected Asian countries

Publication Name: Sustainable Development

Publication Date: 2025-02-01

Volume: 33

Issue: 1

Page Range: 221-237

Description:

Regardless of major advancements in food production, Asia continues to confront severe food security challenges. Sustainable agriculture presents entirely new prospects by prioritizing the productive worth of human, social, and natural capital—all of which are abundant in Asian nations or can be replenished at a relatively low financial expense. This paper sets out to explore the role of technological innovation, renewable energy use, financial development, globalization, and institutional quality on the environmental sustainability of agriculture, measured by the greenhouse gas emissions from the agricultural sector for top 10 agricultural economies of Asia from 1990 to 2019. To attain the above objective, we employ a variety of econometric models capable of accounting for cross-sectional dependence, including the CS-ARDL model and the Dumitrescu-Hurlin Panel Granger Causality tests. The result indicates that technological innovation as well as the use of renewable energy can reduce the greenhouse gas emissions from the agricultural sector and thus contribute towards enhancing environmental performance of this sector in short and long run. Although globalization result is revealed to be positive, it turns out to be insignificant in both short and long run. Financial development exerts positive and significant effects on agricultural emissions while the institutional quality is found to be increasing the agricultural environmental performance. Finally, we provide policy recommendations based on the results of the study.

Open Access: Yes

DOI: 10.1002/sd.3106

Economic and Ecological Aspects of Vehicle Diagnostics

Publication Name: Sustainability Switzerland

Publication Date: 2025-02-01

Volume: 17

Issue: 4

Page Range: Unknown

Description:

The aim of our study is to review the new vehicle diagnostic requirements that support economical and environmentally friendly operation. Vehicle technology is undergoing continuous and significant changes. At the same time, it is not enough to develop energy-efficient and environmentally friendly technologies; they must be operated in proper technical conditions and with proper driving techniques. Accordingly, new, innovative procedures are constantly needed for the economical and environmentally friendly operation of vehicles, and it is important to emphasize that vehicle diagnostics must also follow these changes! The practical applications of our publication and our research focus on several areas. This research is particularly important in the case of public transport vehicles and transport fleets. An important practical aspect is that large transport companies also achieve significant cost savings and, at the same time, contribute to environmentally friendly transport. The publication represents a new direction in vehicle diagnostics and research and development; this is the ECO-Diagnostics discussed in the material. ECO-Diagnostics is a procedure that takes into account both ecological and economic factors during vehicle diagnostic tests. Vehicle diagnostics, as an independent, professional, and scientific field, began to develop in the 1970s. This field of research experiences a paradigm shift, on average, every 20 years. Today, an epochal shift is taking place, with the development and spread of alternative propulsion systems (e.g., electric, hydrogen, or gas) and autonomous vehicles being the main areas of focus. The changes in vehicle technology must be followed by vehicle diagnostics too. Some of the already-known diagnostic methods (e.g., for internal combustion engines) can be included in this category, but new methods are also needed to enable the economical and environmentally friendly operation of vehicles. These facts make it important and urgent to define and research this area. Research in this area is particularly important for public transport vehicles and transport fleets. It is not enough to develop energy-efficient and environmentally friendly technologies: they must be operated in the right technical condition and with the right driving techniques for the intended purpose. This will help large transport companies to achieve significant cost savings and contribute to the environmentally friendly transport of passengers and goods. A major new area in vehicle diagnostics needs to be introduced and expanded. ECO-Diagnostics is a new category that has not been used before, and it also marks a new area of research and development. The article presents the basics of categorization and supports them with its own research results and application examples. As an introduction, a systematic overview of vehicle diagnostics as a whole is also provided. This is important (and novel) as no such systematic overview is available in the technical and scientific literature. The new category should also be included in this scheme. In parallel with the development of vehicles and diagnostic procedures, the methods and their context covered by the umbrella term ECO-Diagnostics (in ecological and economic terms) should, of course, be constantly expanded. Artificial intelligence can play an important role in this process. In the future, there will be a strong demand for the development of procedures in the field of ECO-Diagnostics. For both economic and environmental reasons, it is urgent and important to research and develop procedures in this category. This fact will also influence the work of researchers in the future.

Open Access: Yes

DOI: 10.3390/su17041662

Charpy Impact Test Result Comparison on Reinforcing Materials used in Continuous Filament 3D Printing

Publication Name: Engineering Technology and Applied Science Research

Publication Date: 2025-02-01

Volume: 15

Issue: 1

Page Range: 19354-19357

Description:

With the growing industrial demand for materials that can withstand dynamic loads, composite 3D printing, particularly utilizing continuous fiber reinforcements, presents a promising solution. This study investigates the toughness of three fiber-reinforced materials, namely carbon fiber, Kelvar, and fiberglass, by conducting Charpy impact tests. The results reveal that fiber-reinforced 3D materials significantly outperform standard 3D printed components, with fiberglass showing the highest toughness. These findings demonstrate that fiber-reinforced 3D printed materials offer a viable alternative for applications requiring high toughness and dynamic resistance.

Open Access: Yes

DOI: 10.48084/etasr.8740

The Biopsychosocial Health Model Differentiates Long-Term Exercisers From Non-Exercisers: A Cross-Sectional Study

Publication Name: Health Science Reports

Publication Date: 2025-02-01

Volume: 8

Issue: 2

Page Range: Unknown

Description:

Background and Aims: The biopsychosocial (BPS) model considers that health and behavioral outcomes result from the interaction of biological, psychological, and social factors. Regular exercise is an essential component of modern-day healthy living. All three factors in the BPS model are related to long-term exercise. Therefore, this cross-sectional study aimed to compare adults exercising regularly for at least 3 years with their non-exercising counterparts on perceived health and stress (antagonistic, biopsychological), life satisfaction (psychological), and perceived income (psychosocial) while controlling for age, gender, and education level. Methods: Participants were 461 Hungarian volunteers (74.83% female) aged 18−73 years. There were 274 regular exercisers and 187 non-exercisers. They completed the study on the Qualtrics research platform. Results: A statistically significant (p < 0.001) multivariate analysis of covariance revealed that long-term exercisers scored lower on perceived stress and higher on perceived health, income, and life satisfaction than non-exercising adults. Consequently, the three factors of the BPS model differentiated the groups. Still, the effect sizes were relatively small. Finally, perceived stress was a statistically significant (p < 0.001) mediator of life satisfaction. Conclusion: These findings support the idea that long-term exercise behavior can be studied via the BPS model and the role of stress in life satisfaction. The results have practical implications for promoting a healthy and satisfactory life targeting multi-level development through exercise based on the BPS model.

Open Access: Yes

DOI: 10.1002/hsr2.70476

Direct Writing of Quasi-Sinusoidal and Blazed Surface Relief Optical Transmission Gratings in Bi12GeO20, Er: LiNbO3 and Er: Fe: LiNbO3 Crystals by Nitrogen Ion Microbeams of 5 MeV and 10.5 MeV Energy

Publication Name: Sensors

Publication Date: 2025-02-01

Volume: 25

Issue: 3

Page Range: Unknown

Description:

High diffraction efficiency optical transmission gratings with quasi-sinusoidal and saw-tooth surface relief profiles were fabricated in Bi12GeO20, Er: LiNbO3 and Er: Fe: LiNbO3 crystals by ion beam implantation. The gratings were directly written by nitrogen ion microbeams at energies of 5 MeV and 10.5 MeV. The finest grating constant was 4 μm. Grating constants for the majority of the gratings were 16 μm. The highest amplitudes of the gratings reached 1600 nm. The highest first-order diffraction efficiency obtained in a sinusoidal grating was 25%, close to the theoretical maximum of 33%. The highest first-order diffraction efficiency of a blazed grating was also 25%, without Littrow optimization. Such gratings can be incorporated into integrated optical biosensors.

Open Access: Yes

DOI: 10.3390/s25030804

Genome-Wide Association Study of Exercise Addiction Among Elite Wrestlers

Publication Name: Brain Sciences

Publication Date: 2025-02-01

Volume: 15

Issue: 2

Page Range: Unknown

Description:

Background: Exercise addiction, marked by an inability to control exercise and associated with distress that clinically impairs daily activities, is a significant but underrecognized issue in physical activity and health. While its physiological, psychological, and behavioral aspects have been studied, the genetic basis of exercise addiction remains poorly understood, requiring further investigation. The present study conducted a genome-wide association study of exercise addiction among elite Turkish wrestlers. Methods: The sample comprised 67 male wrestlers (34 freestyle wrestlers and 33 Greco-Roman wrestlers). Exercise addiction was assessed using the Exercise Addiction Scale. Whole-genome genotyping was performed using DNA microarray. Results: Using a genome-wide approach (p < 1.0 × 10⁵), we identified six suggestively significant single-nucleotide polymorphisms (SNPs) associated with exercise addiction status. Of these, the high-addiction alleles of five SNPs (PRDM10 rs74345126, near PTPRU rs72652685, HADHB rs6745226, XIRP2 rs17614860, and near GAREM2 rs1025542) have previously been associated with an increased risk of mental health disorders such as anxiety and depression or higher levels of physical activity. We also examined potential associations between the genetic markers previously linked to addiction-related traits such as obsessive–compulsive disorder and cigarette smoking, and personality traits linked to negative emotions including neuroticism. Using this candidate gene approach (p < 0.05), we identified three additional SNPs associated with exercise addiction in the same direction of association (DEFB135 rs4841662, BCL11A rs7599488, and CSRNP3 rs1551336). Conclusions: The present study provides preliminary evidence for the genetic basis of exercise addiction, highlighting specific SNPs that may play a role in the development of this condition among elite wrestlers.

Open Access: Yes

DOI: 10.3390/brainsci15020102

Bilateral Asymmetries of Plantar Pressure and Foot Balance During Walking, Running, and Turning Gait in Typically Developing Children

Publication Name: Bioengineering

Publication Date: 2025-02-01

Volume: 12

Issue: 2

Page Range: Unknown

Description:

Biomechanical asymmetries between children’s left and right feet can affect stability and coordination, especially during dynamic movements. This study aimed to examine plantar pressure distribution, foot balance, and center of pressure (COP) trajectories in children during walking, running, and turning activities to understand how different movements influence these asymmetries. Fifteen children participated in the study, using a FootScan plantar pressure plate to capture detailed pressure and balance data. The parameters, including time-varying forces, COP, and Foot Balance Index (FBI), were analyzed through a one-dimensional Statistical Parametric Mapping (SPM1d) package. Results showed that asymmetries in COP and FBI became more pronounced, particularly during the tasks of running and directional turns. Regional plantar pressure analysis also revealed a more significant load on specific foot areas during these dynamic movements, indicating an increased reliance on one foot for stability and control. These findings suggest that early identification of asymmetrical loading patterns may be vital in promoting a balanced gait and preventing potential foot health issues in children. This study contributes to understanding pediatric foot biomechanics and provides insights for developing targeted interventions to support healthy physical development in children.

Open Access: Yes

DOI: 10.3390/bioengineering12020151