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Found 6525 publications

Investigation of the shelf life of fruit yogurts as a function of the treatment of flavoring substances

E. Lakatos V. Kapcsándi

Publication Name: Elelmiszervizsgalati Kozlemenyek

Publication Date: 2021-01-01

Volume: 67

Issue: 1

Page Range: 3293-3314

Description:

1. SUMMARY Milk and dairy products represent one of the foundations of the human diet because of their valuable ingredients and pleasant sensory properties. The aim of our research was to investigate how different heat treatment processes (microwave irradiation, drying) affect the shelf life of dairy products (yogurt) from a microbiological point of view. In the course of our measurements, the effects of the different heat treatment parameters of the flavoring substances used in the production of the products (apples, bananas) on the microbiological properties of the products and, thus, on their shelf life were investigated. In our experiments, conventional drying (55 °C, 24 hours) and microwave irradiation technology (800 W, 55 °C, 10 min) were used as treatment forms of the additives. Comparisons were made in terms of microbiological parameters (total viable count, yeast/mold count and E. coli/coliform count). Based on our results, we believe that the drying process can ensure microbiological safety in food production if the air circulating in the equipment has adequate hygienic properties. The microwave irradiation technology can be used successfully to inhibit microbes in foods, in this case fruits. However, the same treatment parameters cannot be applied to different fruits.

Open Access: Yes

DOI: 10.52091/JFI-2021/1-3-ENG

The effect of computer network errors on genetic algorithms

Miklós F. Hatwagner Andras Horvath

Publication Name: Pollack Periodica

Publication Date: 2007-08-01

Volume: 2

Issue: 2

Page Range: 3-12

Description:

Genetic algorithms are widely used in engineering, to solve nonlinear, multi-target optimization problems with multiple variables (e.g. optimization of geometry of flow domains, parameters of control systems). The parallelization of software using genetic algorithms is very important because in a typical practical problem they need huge computational power. Fortunately it is easy to implement a master-slave style parallelization. Our goal was to investigate the effect of random errors that can occur in a cluster of workstations on the efficiency of the genetic algorithm. © 2007 Akadèmiai Kiadó.

Open Access: Yes

DOI: 10.1556/Pollack.2.2007.2.1

Genome-Wide Association Study of Vertical Jump Performance Among Elite Badminton Players

Seyrani Koncagul Mehmet A. Ergun Naoki Kikuchi Hasan H. Kazan Celal Bulgay Nicola Luigi Bragazzi Fevzi Coşkun Sökmen Anıl Kasakolu Yeliz A. Yıldız Attila Szabo

Publication Name: International Journal of Molecular Sciences

Publication Date: 2026-03-01

Volume: 27

Issue: 6

Page Range: Unknown

Description:

Vertical jump performance is known to be a moderately heritable trait. However, previous studies on sport genetics have largely relied on candidate-gene approaches, which do not adequately reflect the polygenic nature of explosive performance, particularly among elite badminton players. Therefore, the aim of the present study was to identify genetic variants associated with lower-limb explosive performance, assessed via vertical jump measures, among elite Turkish badminton players using a genome-wide association study (GWAS) approach. The present study included 90 elite male (n = 47) and female (n = 43) badminton players, and 557 non-athletic controls sourced from a public database. Performance-related traits were evaluated through countermovement jump (CMJ), squat jump (SJ), and their differential. Genome-wide genotyping was performed using DNA microarrays, and associations were examined using linear mixed models fixed for sex/gender, body mass index, and sport experience. Although no variants reached genome-wide significance (p < 1.00 × 10−7), 13 single-nucleotide polymorphisms (SNPs) exceeded the suggestive threshold (p < 1.00 × 10−5). CMJ-associated variants were rs4905767, rs2911702, rs10246591, and rs9842454; SJ-associated variants were rs55817650, rs62318127, rs115197840, rs78317172, and rs35930589; and CMJ–SJ-associated variants were rs34638064, rs6679342, rs4931233, and rs9442615. The present study provides preliminary evidence that lower-limb explosive performance among elite badminton players is polygenic, involving regulatory and signaling pathways rather than single performance genes.

Open Access: Yes

DOI: 10.3390/ijms27062533

Correlation between the mechanical and the geometrical state of railway vehicle carriages

No authors available

Publication Name: Proceedings of the Mini Conference on Vehicle System Dynamics, Identification and Anomalies

Publication Date: 2002-12-01

Volume:

Issue:

Page Range: 261-269

Description:

The railway vehicle's carriage body must be mechanically repaired if cracks appear in its structure. In such cases all factors concerning the mechanical state of the carriage body should be examined, such as connection between the carriages, adjustment of the wheel forces, the different running states and running on straight and curved track. The aim of this study is to provide the mechanical stress values summarising the simultaneous effects of all these factors.

Open Access: No

DOI: DOI not available

Processing systems design considering resilience

Ákos Orosz Jean Pimentel Ferenc Friedler

Publication Name: Computer Aided Chemical Engineering

Publication Date: 2021-01-01

Volume: 50

Issue: Unknown

Page Range: 807-812

Description:

The resilience of a system is defined as the system's capability of recovering from failures. Traditionally, only predictable aspects are considered when designing processing systems. Evaluation of these aspects is performed via assessment of exact indicators and enumeration of all cause-effect options. However, such evaluation is not appropriate for determining the resilience of processing systems, since resilience is based on unexpected events in addition to the expected ones. Consequently, the cause part of the cause-effect relation is not known or not effective. In the current work, the general formula for determining resilience of a system is embedded into a P-graph based process synthesis algorithm. Thus, the resilience can be considered when selecting the most preferred process during its synthesis. The result is illustrated by synthesizing a process of adipic acid production by nitric acid oxidation of KA oil.

Open Access: Yes

DOI: 10.1016/B978-0-323-88506-5.50126-1

Corrosion Avoidance in the Metal Gate Industry Considering Sustainability

Boglárka Eisingerné Balassa Pál Eisinger

Publication Name: Chemical Engineering Transactions

Publication Date: 2021-01-01

Volume: 88

Issue: Unknown

Page Range: 1075-1080

Description:

Coating not cleaned up leads to massive emission worldwide, causing cancer and asthma. Coating gates to avoid corrosion needs to take place in nature. As a result, vast amounts of coating get sprayed out into nature, causing a significant sustainability issue. The industrial coating sector does not use protective equipment to save nature. The study aims to present a case study to minimise environmental pollution without increasing the cost of corrosion protection. The global cost related to corrosion has a significant burden on economies around the world – it costs approximately $2.5x1012 USD/y. It can be as high as 3.4 % of the GDP (2013). This cost has a significant impact on the efficiency of industries such as the automotive industry, industrial coatings and corrosion protection. Global demand for polyurethane coating materials will increase by 280 kt in 2022 (predictably). The volume of the solvent-based industrial coating consumption will grow significantly worldwide in the y 2021, predictably 1,400 Mt. In more detail, half of the coating is wasted, it drips onto the ground, gets into the air, so it causes pollution everywhere. The VOC (Volatile Organic Compounds) of the industrial coating pollutes the air, the living organism, and it can cause cancer, asthma and many other yet unknown health problems. The aim of this study is not only to introduce (based on data analysis) but to call attention to the environmental load originating from the industrial coating. In this study, the sustainability aspects of corrosion have been examined – especially in respect of the treatment of metal structures.

Open Access: Yes

DOI: 10.3303/CET2188179

Body Mass and Aerobic Capacity are Robust Predictors of the 2000m Ergometer Rowing Performance: A Laboratory Study

Ferenc Ihász Celal Bulgay Zsolt Bálint Katona Angéla Somogyi Ádám Balog Anna Pápai-Horváth Zoltán Alföldi Attila Szabo

Publication Name: International Journal of Kinesiology and Sports Science

Publication Date: 2025-01-01

Volume: 13

Issue: 2

Page Range: 78-85

Description:

Purpose: Predicting performance in sports competitions is a popular topic in research. However, only a few studies exist in rowing sports, which suggest that some anthropometric and performance indices might predict performance in various situations. Methods: This work expands past research by examining the effects of five anthropometric measures, such as body mass index (BMI), height, weight, fat, and muscle, and three performance indicators, such as aerobic capacity, maximum speed, and force, while also considering the training history of 38 elite rowers (Mage = 16.89 ± 1.85, range 14.7 to 22.6 years, 61% males) participating in a national championship. Results: Apart from BMI, all measures correlated statistically significantly with the 2000m rowing time. A bootstrapped forward multiple regression yielded the best model with only two predictors (R2 =.995), aerobic capacity and body mass, accounting for 99.5% variance in the 2000m rowing time. Conclusions: While the results support previous findings, such robust prediction has not been reported in the literature. We conjecture that the differences from other past works rest with the high-pressure 2000m performance preceding a national championship. If these findings could be replicated, their practical implication is substantial in preparatory training for rowing contests.

Open Access: Yes

DOI: 10.7575/aiac.ijkss.v.13n.2p.78

DIGITALIZATION AND TOURISM: HOW X, Y, AND Z GENERATIONS MAKE TRAVEL DECISIONS IN THE ONLINE ERA

Zsuzsa Ivancsóné Horváth Marcell Kupi Viktória Kundi

Publication Name: Geojournal of Tourism and Geosites

Publication Date: 2025-01-01

Volume: 60

Issue: Unknown

Page Range: 1302-1314

Description:

This study aims to explore the impact of digitalisation on the travel decision-making process of Generation X, Y, and Z, as well as to identify generational differences in tourism consumer behaviour. The research places particular emphasis on the role of information sources and variations in decision-making preferences. The study employs a quantitative research approach, analysing the travel decision-making habits of different generations through survey-based data collection. A literature review was conducted to examine intergenerational differences and the relationship between digitalisation and travel-related decision-making. Results and discussions: The findings indicate that digitalisation influences travel decisions across all generations, albeit in different ways. Trust and personal recommendations play a crucial role for Generation X, whereas Generation Y relies more heavily on online reviews. In the case of Generation Z, social media and digital channels have a decisive influence. The study also highlights that price remains a key factor for all generations; however, expectations regarding quality and information-seeking behaviours differ. Generation Y and Z exhibit a higher demand for visual content and real-time information, while Generation X tends to value reliability and detailed planning. Furthermore, the results show a clear trend toward mobile-first decision-making among younger users, especially within Generation Z. The study's findings contribute to the development of tourism marketing strategies by enabling the more effective application of generation-specific communication tools. Based on the results, recommendations can be made for tourism service providers regarding the optimisation of their digital presence and customer communication. The insights gained can also support designing personalised digital campaigns, enhance customer engagement, and foster loyalty among different generational segments in the evolving digital tourism landscape.

Open Access: Yes

DOI: 10.30892/gtg.602spl26-1502

Modeling integrated sustainable waste management systems using fuzzy cognitive maps and systems of systems concepts

Miklós F. Hatwagner Adrienn Buruzs Laszlo T. Koczy

Publication Name: Civil Comp Proceedings

Publication Date: 2014-01-01

Volume: 105

Issue: Unknown

Page Range: Unknown

Description:

Movement towards more sustainable waste management practice has been identified as a priority in the whole of the EU. The EU Waste Management Strategy's requirements emphasizes waste prevention; recycling and reuse; and improving final disposal and monitoring. Integrated waste management systems can be defined as the selection and application of suitable and available techniques, technologies and management programs to achieve waste management objectives and goals. As a result of the complexity and uncertainty occurring in sustainable waste management systems, the fuzzy cognitive map method is used with the combination of the bacterial evolutionary algorithm to support the planning and decision making process of integrated systems. Since the fuzzy cognitive map method is formed for a selected system by determining the concepts and their relationships, it is possible to quantitatively simulate the system considering its parameters. Several techniques were used in order to produce the input data of the simulation process. The goal of this paper is to present the process of data production.

Open Access: Yes

DOI: DOI not available