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Publications - 6674

Analysis of Transient-Like Vertical acceleration Events on Semi-Trailer Truck to Simulate Package Testing

Péter Böröcz Renáta Pidl

Publication Name: Advances in Transdisciplinary Engineering

Publication Date: 2024-01-01

Volume: 59

Issue: Unknown

Page Range: 217-223

Description:

In road traffic, encountering significant bumps is common, especially at sunken railway crossings, tertiary roads, and poorly maintained access roads. Speed bumps, also known as "sleeping policemen," exacerbate the issue, requiring drivers to slow down abruptly. Depending on visibility and anticipation, vehicles approach these obstacles at various speeds, resulting in impact loads primarily in the vertical direction on the vehicle's load platform. Accelerations exceeding g-force levels can cause cargo to bounce, leading to potential damage and horizontal sliding, particularly problematic for semi-trailer trucks carrying high-value goods. This study focused on measuring and evaluating this effect using a specific speed bump model simulating a defined road defect on a particular vehicle. The highest vertical acceleration recorded was 2.4G at a speed of 10 km/h. At 5 km/h, the acceleration was 0.76G, while at 15 km/h, it reached 1.9G. These findings suggest that a speed around 10 km/h poses the most risk for such vehicles, with acceleration levels expected to decrease for both slower and faster speeds.

Open Access: Yes

DOI: 10.3233/ATDE240548

Association of Production and Selected Dimensional Conformation Traits in Holstein Friesian Cows

Szabolcs Bene Gabriella Holló László Bognár Zsolt J. Kőrösi Ferenc Szabó

Publication Name: Animals

Publication Date: 2024-09-01

Volume: 14

Issue: 18

Page Range: Unknown

Description:

The objective of this study was to estimate the heritability of dairy production traits and that for dimensional traits and to calculate the correlation between the two heritability values in a Holstein Friesian cow herd bred in Hungary. Data of 15,032 Holstein Friesian cows born in the period 2008–2018 from 666 sires were collected for the study in 6 large dairy herds. Among the conformation traits, stature (ST), chest width (CW), body depth (BD), and rump width (RW), and for production traits, in the first lactation of cows, the 305-day milk yield (MY), milk butterfat yield (FY), and milk protein yield (MY) were evaluated. Heritability estimates of ST, CW, BD, and RW were 0.49, 0.25, 0.31, and 0.30, and those of MY, FY, and PY were 0.40, 0.35, and 0.30, respectively. BD and RW had no phenotypic (b = −0.01) or genetic (b = 0.00–0.01) change. The production traits (MY, FY, PY) increased to a greater extent (b = 2.2–43.3) than the examined conformation traits over time. Consequently, it is indicated that the selection for dairy production did not result in an increase in the studied dimensional traits.

Open Access: Yes

DOI: 10.3390/ani14182753

Development Process of TGDI SI Engine Combustion Simulation Model Using Ethanol–Gasoline Blends as Fuel

A. L. Nagy Bence Zsoldos Máté Zöldy

Publication Name: Applied Sciences Switzerland

Publication Date: 2025-08-01

Volume: 15

Issue: 15

Page Range: Unknown

Description:

The Fit for 55 package introduced by the European Union aims to achieve a 55% reduction in greenhouse gas emissions by 2030. In parallel, increasingly stringent exhaust gas regulations have intensified research into alternative fuels. Ethanol presents a promising option due to its compatibility with gasoline, higher octane rating, and lower exhaust emissions compared to conventional gasoline. Additionally, ethanol can be derived from agricultural waste, further enhancing its sustainability. This study examines the impact of two ethanol–gasoline blends (E10, E20) on emissions and performance in a turbocharged gasoline direct injection (TGDI) spark-ignition (SI) engine. The investigation is conducted using three-dimensional computational fluid dynamics (3D CFD) simulations to minimize development time and costs. This paper details the model development process and presents the initial results. The boundary conditions for the simulations are derived from one-dimensional (1D) simulations, which have been validated against experimental data. Subsequently, the simulated performance and emissions results are compared with experimental measurements. The E10 simulations correlated well with experimental measurements, with the largest deviation in cylinder pressure being an RMSE of 1.42. In terms of emissions, HC was underpredicted, while CO was overpredicted compared to the experimental data. For E20, the IMEP was slightly higher at some operating points; however, the deviations were negligible. Regarding emissions, HC and CO emissions were higher with E20, whereas NOx and CO2 emissions were lower.

Open Access: Yes

DOI: 10.3390/app15158677

Taxonomic contribution to knowledge of the oribatid mite genus Achipteria (Acari, Oribatida, Achipteriidae)

Sergey G. Ermilov Jenő Kontschán

Publication Name: International Journal of Acarology

Publication Date: 2025-01-01

Volume: 51

Issue: 2

Page Range: 81-87

Description:

The oribatid mite family Achipteriidae is recorded in the Dominican Republic for the first time. A new species of the genus Achipteria—A. (Izuachipteria) dominicanensissp. nov.—is described, based on adults collected from leaf litter in a mixed forest. The species is characterized by the morphology of the lamella (triangular distally, without strong lateral tooth), the location of the lamellar seta (on ventral side of the lamella), the length of the bothridial seta (long), the ornamentation and morphology of the pteromorph (partially striate, with lateral tooth), the number of the leg claws (one), and the absence of the notogastral saccules. The taxonomic status of the subgenera Achipteria (Cubachipteria), A. (Hokkachipteria), and A. (Izuachipteria) is discussed. An identification key, distribution, and habitat of the known representatives of Achipteria (Izuachipteria) are presented.

Open Access: Yes

DOI: 10.1080/01647954.2024.2439799

Spatial and Heterogeneity Analysis of Environmental Taxes’ Impact on China’s Green Economy Development: A Sustainable Development Perspective

Laszlo Vasa Pinghua Chen Minye Rao Yudan Xu

Publication Name: Sustainability Switzerland

Publication Date: 2023-06-01

Volume: 15

Issue: 12

Page Range: Unknown

Description:

Environmental taxation is an important tool used by governments to promote resource conservation and environmental protection. Given the current global constraints on resources and increasing environmental degradation, exploring how environmental taxes can effectively stimulate the development of a green economy is of utmost importance. This study utilized panel data from 30 provinces, autonomous regions, and municipalities in China, covering the period from 2006 to 2020. The research findings indicate a spatial correlation between environmental taxes and green economic efficiency in China, with the former significantly promoting the development of the latter. A heterogeneity analysis revealed varying impacts of different taxes on the efficiency of green economic development in different regions. Controlling for variables, the study results demonstrated a negative correlation between industrial structure and green economic efficiency, with a significance level of 1%. Additionally, no correlation was found between pollution control efforts and green economic benefits. The effects of different taxes on regional efficiency varied, and industrial structure exhibited a negative correlation with green economic efficiency. This study recommends strengthening intergovernmental coordination, improving tax policies, optimizing industrial structure, and enhancing the pollution control efficiency of local governments to promote China’s green economy.

Open Access: Yes

DOI: 10.3390/su15129332

Entrepreneurial ecosystem and urban innovation: Contextual findings in the lens of sustainable development from China

Laszlo Vasa Umer Shahzad Xin Zhao Yong Xu

Publication Name: Technological Forecasting and Social Change

Publication Date: 2023-06-01

Volume: 191

Issue: Unknown

Page Range: Unknown

Description:

Entrepreneurial activities constitute a critical antecedent to urban innovation (UI), which reflects the levels of innovation and creation activities in cities and is strongly related to their economic development. Existing research on UI focuses on the net effects of individual explanatories in isolation while leaving the synergistic effects between these factors under-examined. Drawing from the entrepreneurial ecosystem (EE) theory, we constructed an entrepreneurial ecosystem composed of market, finance, human capital, internet access, transportation, and government, adopting the fuzzy set qualitative comparative analysis (fsQCA) of 34 representative cities in China to analyze the combined effects of multiple elements underpinned UI. Consequently, the following findings were observed. First, no single entrepreneurial ecosystem element constitutes a necessary condition for a high UI level. Second, large markets and well-designed government services correspond well to high UI levels. Third, the lack of mature transportation and a large market lead to a non-high level. This study advances antecedent research on UI by addressing the complex mechanism of multi-factor linkages.

Open Access: Yes

DOI: 10.1016/j.techfore.2023.122526

Relationship between Some Myostatin Variants and Meat Production Related Calving, Weaning and Muscularity Traits in Charolais Cattle

Márton Török Szabolcs Bene Gabriella Holló Edit Mikó Tamás Csürhés Ferenc Szabó

Publication Name: Animals

Publication Date: 2023-06-01

Volume: 13

Issue: 12

Page Range: Unknown

Description:

The slaughter value of live cattle can be assessed during visual conformation scoring, as well as by examining different molecular genetic information, e.g., the myostatin gene, which can be responsible for muscle development. In this study, the F94L, Q204X, nt267, nt324 and nt414 alleles of the myostatin gene (MSTN) were examined in relation to birth weight (BIW), calving ease (CAE), 205-day weaning weight (CWW), muscle score of shoulder (MSS), muscle score of back (MSB), muscle score of thigh (MST), roundness score of thigh (RST), loin thickness score (LTS), and overall muscle development percentage (OMP) of Charolais weaned calves in Hungary. Multi-trait analysis of variance (GLM) and weighted linear regression analysis were used to process the data. Calves carrying the Q204X allele in the heterozygous form achieved approximately 0.14 points higher MSB, MST and LTS, and 1.2% higher OMP, and gained 8.56 kg more CWW than their counterparts not carrying the allele (p < 0.05). As for the F94L allele, there was a difference of 4.08 kg in CWW of the heterozygous animals, but this difference could not be proved statistically. The other alleles had no significant effect on the evaluated traits.

Open Access: Yes

DOI: 10.3390/ani13121895

Stress-Induced “Immediate” Lactate (iBLC) Response Differences in Pubertal and Young Adult Soccer Players

Ferenc Ihász István Barthalos László Suszter Imre Soós Ádám Balog Anna Horváth Pápai Ottó Vincze Zoltán Alföldi

Publication Name: Sports

Publication Date: 2025-11-01

Volume: 13

Issue: 11

Page Range: Unknown

Description:

Background: High-intensity physical activity elicits acute physiological responses across the metabolic, cardiovascular, respiratory, endocrine, immune, and neuromuscular systems. During recovery, multiple processes act to restore homeostasis and functional capacity. The aim of this study was to examine age- and position-related differences in cardiovascular and metabolic responses among youth soccer players. Methods: A total of 147 male academy soccer players were assessed, divided into four age groups (U15, U16, U17, U18/U19) and four playing positions (defenders, midfielders, forwards, goalkeepers). Results: Significant anthropometric and physiological differences were observed between age groups. Body height and weight increased progressively with age (p < 0.05), while body fat percentage was lower in younger compared to older cohorts (p < 0.001). Relative muscle mass did not differ significantly between groups. Absolute aerobic capacity (VO2max) was higher in U17–U19 compared to U15–U16 (p < 0.001). Heart rate at anaerobic threshold (HRAT) and maximal heart rate were greater in the younger groups (p ≤ 0.005). Immediate blood lactate (iBLC) and ΔiBLC were significantly higher in U15–U16 compared to U17–U19 (both p < 0.001). Position-specific analysis revealed higher iBLC in U15 defenders compared to U18/U19 defenders (p < 0.01), whereas no positional differences were observed in relative VO2max. Conclusions: These results are due to a carefully designed training program and frequent individual training sessions.

Open Access: Yes

DOI: 10.3390/sports13110384

Effects of Vinasse and zinc complex on the yield, crude protein, and gluten of winter wheat

Zoltán Varga Ottilia Vámos Tamás Szakál Borbála Hanusz Pólyáné

Publication Name: Bio Web of Conferences

Publication Date: 2024-08-23

Volume: 125

Issue: Unknown

Page Range: Unknown

Description:

The primary goal of agricultural production is to produce adequate quantity and quality of crops. One crucial aspect of this is providing the appropriate nutrients to plants. In recent times, there has been a growing emphasis on replenishing micronutrients beside macronutrients, as essential microelements, although in smaller quantities, are indispensable for the cultivation of our crops. In our three-year small-plot experiments, the effect of two foliar fertilizers, Vinasse, which is a byproduct of alcohol production, and a zinc complex on the yield, crude protein, and gluten content of winter wheat, was investigated. The effects of these formulations when applied as foliar fertilizers separately and together, at doses of 50, 100, 250 and 500 l/ha for Vinasse and 0.5 kg/ha for zinc complex, were examined. Based on the results of the small-plot experiments set up in the fall of 2020 and 2021 and harvested in the summer of 2021 and 2022, it can be concluded that using Vinasse + zinc complex treatments a higher yield and better content indicators were achieved compared to the control plots. The highest dose of Vinasse (500 l/ha) + zinc complex (0.5 kg/ha) had the greatest positive effect on yield values.

Open Access: Yes

DOI: 10.1051/bioconf/202412501002