Hungarian Journal of Industrial Chemistry最新文献_第10页

Modeling and Parameter Sensitivity Analysis of a Synchronous Motor 同步电机建模及参数灵敏度分析

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/399

L. Neukirchner, A. Fodor, A. Magyar

引用次数: 0

Profit optimization of batch-continuous production systems under stochastic processingconditions by simulation 随机加工条件下分批连续生产系统的利润优化仿真

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/447

É. Orbán-Mihálykó, C. Mihálykó, B. Lakatos, T. Szabó, Á. Papp

引用次数: 1

EFFECTS AND CHANGES OF ZEARALENONE AND FUMONISIN CONTAMINATION IN CORN-BASED BIOETHANOL PROCESS 玉米基生物乙醇生产过程中玉米赤霉烯酮和伏马毒素污染的影响及变化

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/460

Zsolt Prettl, A. Lepossa, E. Toth, I. Kelemen-Horváth, Á. Németh, E. Nagy

引用次数: 2

Estimation of the Maximum Applicable Voltage Level of Aluminium Electrolytic Capacitors by Automated Spark-Detection Measurement 用火花自动检测法估计铝电解电容器的最大适用电压等级

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/386

L. Kovács, D. Fodor

引用次数: 1

Thoughts about the Clear Energy 关于清洁能源的思考

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/434

A. Farkas, P. Faragó

{"title":"Thoughts about the Clear Energy","authors":"A. Farkas, P. Faragó","doi":"10.1515/434","DOIUrl":"https://doi.org/10.1515/434","url":null,"abstract":"The life of humanity has become faster in the 20th century. Due to globalization technology has improved a great deal, every decade had its own revolutionary invention. However, globalization has its drawbacks as well, which have an impact on every field of life. These challenges must be met by humanity. One of these global challenges is the energy crisis and energy dependency.\u0000\u0000In the last decade a research involving experts was carried out which ranked the challenges humanity faces. The problems analysed involved such key fields as education or discrimination. According to the findings the highest ranked issue is energy supply, which means, according to experts, this is the most crucial problem for what we need a solution.\u0000\u0000In this research we introduce how university students look at alternative energy sources. The findings are compared to the results of two previously carried out researches. Providing information about alternative energy sources is an excellent solution to change attitudes and such a change is absolutely necessary since the students of one of our most reputable universities, the Corvinus University of Budapest, have much less knowledge of the topic than the desireable level.\u0000\u0000Making up for the shortcomings is an extremely important task as it is required for a social cooperation which is needed in order to solve humanity’s most important problem in the 21st century, the energy crisis.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85460085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Environmental Significance and Identification of Metal-Chelate Complexes Using Ion Chromatography 金属螯合物的环境意义及离子色谱鉴定

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/390

Renáta Tófalvi, Annamária Sepsey, K. Horváth, P. Hajós

{"title":"Environmental Significance and Identification of Metal-Chelate Complexes Using Ion Chromatography","authors":"Renáta Tófalvi, Annamária Sepsey, K. Horváth, P. Hajós","doi":"10.1515/390","DOIUrl":"https://doi.org/10.1515/390","url":null,"abstract":"The trace analysis of metal-complexes has long been an area of interest for analytical chemists and environmental researchers due to the biological and toxic properties of these compounds. The method for the simultaneous separation of the metal cations and organic and inorganic anions is based on the use of strong chelating anion with high charge. When basic solution contains an excess of strong complexing anion of high charge, such as ethylenediaminetetraacetate (EDTA) or trans-1,2-diamine-cyclohexane-tetraacetic acid (DCTA) ion, most heavy and transition metal ions will occur as anionic complexes. Hence this method provides simultaneous metal and anion separation. The EDTA and DCTA chelating agents exhibit strong complexing power. These aminopolycarboxylic acids can remobilize metals in nature. Because aminopolycarboxylic acids are a potential risk to the environment, it is important to develop an effective analytical technique for their determination. Several factors affect the retention in the separation of the complex anions: complex formation reactions, ion-exchange equilibria and protolysis depending on pH. The aim of this work is the optimization of a simultaneous chromatographic separation and identification of metal ions complexed by the ligand EDTA or DCTA. The method was utilized to separate CuEDTA2-, CuDCTA2-, ZnEDTA2-, ZnDCTA2-, AlEDTA-, AlDCTA-, Cl-, piruvate and maleate anions. An advantage of the developed method is that the same basic pH-range is favourable to the stability of the metal complexes and to the elution.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85473274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Experimental Results of Dry Drilling of Wear Resistant Steel 耐磨钢干钻试验结果

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/411

A. Kovacs, G. Varga

引用次数: 0

Degradation of organic pollutants in photocatalytic reactors 光催化反应器中有机污染物的降解

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/452

A. Ujhidy, E. Szabó-Bárdos, O. Horváth, A. Horváth, K. Schmidt

{"title":"Degradation of organic pollutants in photocatalytic reactors","authors":"A. Ujhidy, E. Szabó-Bárdos, O. Horváth, A. Horváth, K. Schmidt","doi":"10.1515/452","DOIUrl":"https://doi.org/10.1515/452","url":null,"abstract":"Titanium dioxide-mediated photocatalytic mineralization of oxalic acid and formic acid as model compounds were studied in a laboratory-scale reactor and in a pilot equipment to promote the development of procedures for wastewater treatment. Experimental results obtained by using various TiO2 catalysts indicate that the adsorption of the pollutant substrates on the surface of the semiconductor particles is not directly correlated with the specific surface area of the adsorbent. The initial rate of the photocatalytic degradation of the model compounds is enhanced by increasing the adsorption capability of the titanium dioxide applied, but the overall mineralization efficiency is jointly determined by several factors such as the crystal structure, the mean value and the distribution of the particle size, as well as the number of the hydroxyl groups on the particle surface. The VP P90 TiO2 proved to be the most efficient photocatalyst for degradation of both model compounds studied. Application of static mixer in the pilot equipment enhanced the rate of the photocatalytic mineralization of formic acid by about 27%. This effect can be attributed to the increased interfacial mass transfer facilitating the movement of photogenerated HO● radicals from the catalyst surface or the boundary layer to the bulk solution.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85543366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Study on sorption characteristics of citric acid modified rape-seed pellet considering the chemical pre-treatment processes 考虑化学预处理工艺的柠檬酸改性油菜籽颗粒吸附特性研究

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/457

D. Németh, Z. Barta, J. Labidi, L. Gubicza, K. Bélafi-Bakó

引用次数: 1

‘By’ Treating of Micro-Alloyed Steels Supported by Integrated ‘IT’ Technology in the Forging Factory of Raba 在拉巴锻造厂采用集成IT技术对微合金钢进行处理

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/419

F. Tancsics

{"title":"‘By’ Treating of Micro-Alloyed Steels Supported by Integrated ‘IT’ Technology in the Forging Factory of Raba","authors":"F. Tancsics","doi":"10.1515/419","DOIUrl":"https://doi.org/10.1515/419","url":null,"abstract":"In the forging industry typical in the 21st century, economical production requires environment-friendly manufacturing of integrated and complicated products of larger and larger masses. Difficulties to be solved require effective researches, technological developments and cost analyses. Most frequently, cost analyses call the attention to energy demand of forging, to tool costs and to the efficiency of raw material usage. Preservation and enhancement of competitiveness based on environment-friendly technological solutions are one of the most important challenges for the forging industry in the 21st century. Our case study presents BY (The Best Yield) treatment technology of a planetary carrier developed in the RABA forging plant. Development of the basic technology required integrated application of CAD (Computer Aided Design) – CAE (Computer Aided Engineering) and a test method using thermographic camera. Integration of IT (Information Technology) systems created a new design method, which enables relatively precise determination of cooling technology for BY treated products even in the design stage. The properly micro-alloyed basic material and cooling technology made it possible to omit the quench and temper heat treatment and to adopt an energy-saving forging process.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88097937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1