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Found 6327 publications

Contribution to the knowledge of Rotundabaloghia mites: new species and new records (Acari: Mesostigmata: Rotundabaloghiidae) from the Oriental and Australasian regions

Sergey G. Ermilov Jenő Kontschán

Publication Name: Systematic and Applied Acarology

Publication Date: 2023-03-01

Volume: 28

Issue: 3

Page Range: 405-410

Description:

No description provided

Open Access: Yes

DOI: 10.11158/saa.28.3.1

Implementation of Optimized Regenerative Braking in Energy Efficient Driving Strategies

Péter Korös Zoltan Pusztai Ferenc Szauter Ferenc Friedler

Publication Name: Energies

Publication Date: 2023-03-01

Volume: 16

Issue: 6

Page Range: Unknown

Description:

In this paper, determination of optimized regenerative braking-torque function and application in energy efficient driving strategies is presented. The study investigates a lightweight electric vehicle developed for the Shell Eco-Marathon. The measurement-based simulation model was implemented in the MATLAB/Simulink environment and used to establish the optimization. The optimization of braking-torque function was performed to maximize the recuperated energy. The determined braking-torque function was applied in a driving strategy optimization framework. The extended driving strategy optimization model is suitable for energy consumption minimization in a designated track. The driving strategy optimization was created for the TT Circuit Assen, where the 2022 Shell Eco-Marathon competition was hosted. The extended optimization resulted in a 2.97% improvement in energy consumption when compared to the result previously achieved, which shows the feasibility of the proposed methodology and optimization model.

Open Access: Yes

DOI: 10.3390/en16062682

Effect of Rolling Resistance Model Parameters on 3D DEM Modeling of Coarse Sand Direct Shear Test

Majid Movahedi Rad M. Amine Benmebarek

Publication Name: Materials

Publication Date: 2023-03-01

Volume: 16

Issue: 5

Page Range: Unknown

Description:

This paper deals with the micro and macro behaviors of coarse sand inside a direct shear box during a geotechnical test. A 3D discrete element method (DEM) model of the direct shear of sand was performed using sphere particles to explore the ability of the rolling resistance linear contact model to reproduce this commonly used test considering real-size particles. The focus was on the effect of the interaction of the main contact model parameters and particle size on maximum shear stress, residual shear stress, and sand volume change. The performed model was calibrated and validated with experimental data and followed by sensitive analyses. It is shown that the stress path can be reproduced appropriately. For a high coefficient of friction, the peak shear stress and volume change during the shearing process were mainly affected by increasing the rolling resistance coefficient. However, for a low coefficient of friction, shear stress and volume change were marginally affected by the rolling resistance coefficient. As expected, varying the friction and rolling resistance coefficients was found to have less influence on the residual shear stress.

Open Access: Yes

DOI: 10.3390/ma16052077

Examining Knowledge Diffusion in the Circular Economy Domain: a Main Path Analysis

Yasanur Kayikci Suhaiza Zailani John G. Keogh Abderahman Rejeb Karim Rejeb

Publication Name: Circular Economy and Sustainability

Publication Date: 2023-03-01

Volume: 3

Issue: 1

Page Range: 125-166

Description:

The circular economy (CE) field has recently attracted significant interest from academics and practitioners. CE represents a departure from the linear economy, which is characterised by unsustainable resource production and consumption. The growing number of publications necessitates a comprehensive analysis of this field. This is the first systematic examination of the knowledge base and knowledge diffusion pathways in the CE domain. We analyse a Web of Science dataset containing 5431 articles published between 1970 and 2020. To create a comprehensive review of the CE domain, we conducted a keyword co-occurrence network analysis. We examined four distinct types of main paths using the main path analysis (MPA) technique: forward, backward, global, and key-route. According to the analyses, CE research focuses on six primary research themes: CE and sustainability, bioeconomy, CE practices, lifecycle assessment and industrial symbiosis, construction activities, and waste management. In addition, the MPA demonstrates that the CE literature has recently focused on Industry 4.0 technologies and their contribution to CE. This is the first attempt to depict the genealogy of CE research so that scholars can comprehend the domain’s evolutionary structure, identify hot topics, and capture the history, development status, and potential future directions of CE research.

Open Access: Yes

DOI: 10.1007/s43615-022-00189-3

Incidence of compulsive behavior (stereotypies/abnormal repetitive behaviors) in populations of sport and race horses in Hungary

Katalin Maros Mónika Besenyei Adrián Pesti Róbert Kádár Antónia Lukácsi Ádám Szedenik Zoltán Drégelyi Egri Borisi

Publication Name: Journal of Veterinary Behavior

Publication Date: 2023-03-01

Volume: 61

Issue: Unknown

Page Range: 37-49

Description:

The main objectives of this survey were to identify correlations between housing arrangements and prevalence of abnormal repetitive behaviors (ARBs) in equine society. Data were collected by an email questionnaire from 60 participants (stables, owners, equine experts) between 2018 and 2020 in Hungary to determine the prevalence of ARBs associated with housing conditions in the equine population. The questionnaire documented information about location, number of horses present, type of horse, and management systems (pasture, corral, stable). The resultant inventory of compulsive behaviors covered 486 Thoroughbreds managed by 20 gallop trainers, 265 Trotting horses managed by 13 trotting trainers, and 1895 horses of other breeds, totaling of 2646 equine individuals (5.29% of the total equine population in Hungary today). The survey delivered identified 29 different types of compulsive behaviors within a total of 217 cases of stereotypic behavior. Of the 29 different of compulsive behavior, 8 types of stereotypic/ARBs were associated with feeding management. Based on survey data, 90% of Thoroughbreds spent their time in a combination of a stable and corral, and 10% of them had an access to pasture. For the Trotting population, 93% trotting horses lived in the combination of a stable and corral, and 7% of them had an access to a pasture. For other horse breeds, 19% lived exclusively in a pasture without a stable or corral, 48% spent their life in a combination of a stable, pasture and corral, 11% shuttled between a stable and pasture, 15 % were housed in a stable and corral, and 7% commuted between a pasture and corral. The Pearson-correlation method revealed a positive correlation between prevalence of ARBs and use of a stable (0.261), as well as a corral (0.286). The prevalence of ARBs correlated negatively with the use of pasture (-0.099). Thoroughbreds exhibited the highest level of prevalence of compulsive behaviors with 75 cases recorded and 34.56% of Thoroughbreds affected. Trotting horses followed with 60 cases, affecting 27.65% of the population. There were 35 cases among the miscellaneous breeds (16.13% of their population). Arabian breeds had 15 cases reported with a prevalence of 6.91%. There were 11 cases in Huculs, for a prevalence of 5.07%, and Gidrán and Hungarian warmblood breeds both had 6 cases with a prevalence of 2.76%. The Furioso-north star breed had 5 cases with a prevalence of 2.30% and the Lipizzaner had 4 cases with a prevalence of 1.84%. Compulsive behaviors and problematic activities associated with feeding occurred in 117 cases are responsible of 53.90% of total of stereotypic behaviors reported. Other compulsive behaviors were spread across 100 cases, comprising 46.10% of the ARBs reported. ARBs of intonation and pawing when feeding are the most common in prevalence (24.88%), followed by weaving (7.38%), wall-kicking (5.99%), prancing and crib-biting (5.07%) and stall-walking (4.61%). The ratios of stress-sensitivity of the population (SSP) and stress-sensitivity of the breed (SSB) can be calculated given these data. The most common equine ARBs are associated with management systems. By introducing pasture, the occurrence of ARBs can be significantly decreased. In the light of the results, the components of professional care for equids can be redefined.

Open Access: Yes

DOI: 10.1016/j.jveb.2023.01.003

Artificial intelligence and emerging technologies: Exploring opportunities through smart specialisation

Ruslan Rakhmatullin Fatime Barbara Hegyi

Publication Name: Handbook of Research on Artificial Intelligence Innovation and Entrepreneurship

Publication Date: 2023-02-14

Volume: Unknown

Issue: Unknown

Page Range: 237-253

Description:

No description provided

Open Access: Yes

DOI: 10.4337/9781839106750.00025

Artificial intelligence and emerging technologies: Exploring opportunities through smart specialisation

No authors available

Publication Name: Handbook of Research on Artificial Intelligence, Innovation and Entrepreneurship

Publication Date: 2023-02-14

Volume:

Issue:

Page Range: 237-253

Description:

Open Access: No

DOI: DOI not available

Exploring N-best solution space for heat integrated hydrogen regeneration network using sequential graph-theoretic approach

Ákos Orosz Bing Shen How Adrian Chun Minh Loy Juin Yau Lim Abdulqader Bin Sahl Ferenc Friedler

Publication Name: International Journal of Hydrogen Energy

Publication Date: 2023-02-12

Volume: 48

Issue: 13

Page Range: 4943-4959

Description:

To achieve the ever-stringent sustainable goals, this paper aims to synthesize a heat integrated hydrogen regeneration network (HIHRN) using a graph-theoretic-based sequential method. Firstly, the optimal and near-optimal structures for a hydrogen regeneration networks (HRN) are determined using P-graph model with consideration of both impurity and pressure constraints. These networks are then used as inputs in P-HENS software to generate a list of optimal and near-optimal heat exchanger network (HEN) structures. An eight source and sink problem is used to demonstrate the effectiveness of the proposed method. There are 199,677 feasible HIHRN structures identified, while the 6 near-optimal solutions which are within 0.05% tolerance of the optimal network cost (i.e., less than 33.04 M$/y) are presented together with the top four HEN designs that can offer comparable costs (∼115,500 $/y). In addition, the impacts of pressure swing adsorber (PSA) pressure drop consideration and minimum temperature difference on the optimal design are also presented.

Open Access: Yes

DOI: 10.1016/j.ijhydene.2022.10.196

The effect of transportation vibration on the microbiological status of bottled mineral water

Balázs Ásványi Péter Böröcz Renáta Tihanyi-Kovács

Publication Name: Journal of the Science of Food and Agriculture

Publication Date: 2023-02-01

Volume: 103

Issue: 3

Page Range: 1059-1068

Description:

BACKGROUND: Microbiological status and stability are important in mineral waters because of increased global demand. An increase in distribution and supply chains has led to prolonged periods of transportation, causing microbiological changes. Therefore, this study examines the effect of vibration on mineral water quality. Freshly bottled and previously sterilized mineral waters inoculated with microbes isolated from freshly bottled water were tested. The water samples were exposed to random vibration using ASTM (D4169) truck level I, II and III standard vibration protocol for truck transportation at 4 × 1 h at 22 ± 1 °C. After agitation their microbiological status was determined. RESULTS: Under the influence of low-intensity mechanical impact, the growth rate of autochthonous species in the freshly bottled natural mineral water tripled (μcontrol = 0.036 h−1, μvibrated = 0.093 h−1) and that of allochthonous species doubled (μcontrol = 0.035 h−1, μvibrated = 0.069 h−1). The latter was also observed in the case of high-intensity vibration (μcontrol = 0.102 h−1, μvibrated = 0.200 h−1). The effect of the medium intensity of the standard was manifested in the delay in microbial growth. CONCLUSION: The impact of transportation vibrations on microbiological status changes in mineral water could be observed when subjected to vibration. The native and allochthonous species of mineral water respond differently to changes in intensity. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Open Access: Yes

DOI: 10.1002/jsfa.11787