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Found 6278 publications

DAIRY WASTEWATER UTILIZATION BY COMBINATION OF OXIDATION PRE-TREATMENT AND ULTRAFILTRATION

Zsuzsanna László Sándor Beszédes E. Lakatos Mihály Zakar Gábor Keszthelyi-Szabó

Publication Name: Environmental Engineering and Management Journal

Publication Date: 2021-01-01

Volume: 20

Issue: 12

Page Range: 1711-1719

Description:

In this work the effects of oxidation pre-treatments (ozonation and Fenton reaction) on membrane filtration of dairy wastewater were investigated, together with the further utilization possibilities of residual wastes. The oxidation pre-treatments enhanced the membrane filtration efficiency, from which the short-term ozone treatment was found to be the most effective method both in terms of increasing the flux and the pollutant removal efficiency. After ozone pre-treatment the phosphate and ammonium content of the wastewater migrated to the permeate, while after Fenton pre-treatment the phosphate content remained in the concentrate, and the ammonium content in the permeate decreased. The concentrate was utilized as biogas resource and it was found that both pretreatments increased the biogas production and its methane content as well. Based on our results it can be concluded that ozone pretreatment combined with membrane separation have improved the efficiency of dairy wastewater treatment and may suit the requirements of circular economy.

Open Access: Yes

DOI: DOI not available

On weighted possibilistic informational coefficient of correlation

István Harmati Peter Varlaki Imre J. Rudas Robert Fuller

Publication Name: International Journal of Mathematical Models and Methods in Applied Sciences

Publication Date: 2012-12-19

Volume: 6

Issue: 4

Page Range: 592-599

Description:

In their previous works Fullér et al. introduced the notions of weighted possibilistic correlation coefficient and correlation ratio as measures of dependence between possibility distributions (fuzzy numbers). In this paper we introduce a new measure of strength of dependence between marginal possibility distributions, which is based on the informational coefficient of correlation. We will show some examples that demonstrate some good properties of the proposed measure.

Open Access: Yes

DOI: DOI not available

Powdery mildew of ash trees caused by the non-native Erysiphe salmonii in Hungary

Alexandra Pintye Diána Seress Márk Z. Németh János Ágoston Anita Z. Soós Orsolya Molnár

Publication Name: Journal of Plant Diseases and Protection

Publication Date: 2024-06-01

Volume: 131

Issue: 3

Page Range: 1093-1097

Description:

Fraxinus ornus and F. excelsior are naturally occurring woodland trees and widely cultivated ornamental plants in Hungary. Leaves with powdery mildew symptoms observed unusually on adaxial side of leaves of F. ornus and F. excelsior were collected from two locations in Hungary. We identified the causing fungi based on their morphological characteristics and molecular phylogenetic analysis. Numerous chasmothecia were found on a part of the samples, which were spherical, 83–120 µm in diameter, and the apices of the appendages uncinated or spirally curved. Anamorphs were characterized by conidiophores developing conidia singly, and by hyphae with lobed appressoria, characteristic of Erysiphe spp. The internal transcribed spacer region of the nrDNA was amplified, and the BLAST searches showed 100% similarity with Erysiphe salmonii sequences in GenBank. In the phylogenetic analysis the sequences of the Hungarian samples grouped in one clade with the sequences of other E. salmonii specimens collected in Central and Eastern Europe and Asia. This is the first report of the non-native E. salmonii causing powdery mildew on Fraxinus sp. in Hungary.

Open Access: Yes

DOI: 10.1007/s41348-023-00854-1

The Trans-Atlantic Research and Development Interchanges on Sustainability

Urmila M. Diwekar Csaba Deák Audrey L. Mayer Michael Narodoslawsky Heriberto Cabezas

Publication Name: Trans Atlantic Research and Development Interchanges on Sustainability

Publication Date: 2025-01-01

Volume: Unknown

Issue: Unknown

Page Range: 1-181

Description:

The Trans-Atlantic Research and Development Interchanges on Sustainability is a comprehensive foundational look at sustainability science, developed directly from the outcomes and learnings of the Trans-Atlantic Research and Development Interchanges on Sustainability (TARDIS) workshop that has been ongoing since 2004. The book brings together the most thorough recent advances in concepts, theories, methods, models and applications to steer the course towards a sustainable and resilient future. It provides a source of information on sustainability science directly from the experiences of global sustainability scientists and their research data not found elsewhere. This book will be an all-encompassing source of information on all aspects of sustainability science for academics, researchers and students in sustainability science and any applicable science that takes sustainability into account.

Open Access: Yes

DOI: 10.1016/C2020-0-01977-8

Calculation of preheating temperature of different steels applied in vehicle industry

Hassan Raheem Hassan Mahmood Alhafadhi Reham K. Jaafar Zahra'a Aamer Oudah Lama Mkanna Kareem A. Falih

Publication Name: Pollack Periodica

Publication Date: 2026-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

Preheating is crucial in welding high-strength steels as it reduces the risk of cold cracking, manages residual stresses, and improves the mechanical properties of welded joints. This study examines various preheating techniques and their effects on the temperature field, residual stress distribution, and deformation behavior in high-strength steel welding. The specific procedures for enhancing it are discussed in this paper, focusing mainly on preheating, controlled heat input during welding, and additionally heat treatment of the welded joint. Through experimental analysis, the optimal preheating temperatures and methods for different steel grades, including S960QL and S1100M, are determined. The results indicate that preheating significantly lowers residual stress, prevents brittle fractures, and enhances overall weld quality.

Open Access: Yes

DOI: 10.1556/606.2025.01446

Event driven software modeling of combinational logic network based control programs

József Kopják Janos Kovacs

Publication Name: Ines 2012 IEEE 16th International Conference on Intelligent Engineering Systems Proceedings

Publication Date: 2012-10-01

Volume: Unknown

Issue: Unknown

Page Range: 253-257

Description:

Event driven program model is very good tool to write discrete control programs based on sequential logic, but to create combinational logic based controls is more problematic. The paper presents one implementation of event driven software model of combination logic networks. The paper first reviews the basics of event-driven systems. Greater part of article presents the mathematical basic and architecture of event-driven combinational logic and one software implementation of the model. The paper ends with description of event-driven universal software gate. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/INES.2012.6249840

Estimation of sample size to forecast travel demand in urban public transport

Richard Horvath Balázs Horváth

Publication Name: 2015 International Conference on Models and Technologies for Intelligent Transportation Systems Mt ITS 2015

Publication Date: 2015-08-25

Volume: Unknown

Issue: Unknown

Page Range: 300-303

Description:

The starting point of a transport development project is knowledge on travel demand. If there is time and money for doing a detailed survey and passenger counting, we are able to build up detailed travel demand models. Usually this is not the case of the reality. Normally there is money and resources for some counting and maybe some surveying to clarify the demand data (e.g. OD matrix). There is always a discussion point; what is the needed size of the sample at a surveying, to be able to produce reliable data for OD matrix estimation. The paper deals with the issue of needed sample size and reliability of results.

Open Access: Yes

DOI: 10.1109/MTITS.2015.7223271

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

In-cylinder pressure indication of internal combustion engines for diagnostic purposes

Peter Dely István Lakatos

Publication Name: Sami 2015 IEEE 13th International Symposium on Applied Machine Intelligence and Informatics Proceedings

Publication Date: 2015-03-16

Volume: Unknown

Issue: Unknown

Page Range: 37-40

Description:

Beside onboard diagnostic methods, procedures examining the basic processes of engine operation are also of high importance in the field of vehicle diagnostics. Thermodynamic investigation of the combustion process, for instance, is excellently applicable not only for research and development but for service diagnostic purposes too. Possibilities and significance of the above tests as well as our newly developed methods are presented in the article.

Open Access: Yes

DOI: 10.1109/SAMI.2015.7061902