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Determination of the Accumulation of the Heavy Metal Content of the Sediment of River Danube by Plants
163-170Views:179In these days, the surface waters and their floodplains and oxbow lakes are operating as ecological corridors, although their touristic role is not negligible. The monitoring and saving of these wetlands need for sustain these areas for the future generations. The environmental parameters of floodplains and oxbow lakes is revealed with the analyses of the quality of the water and sediment. The main sampling place of our research is a sediment dump was created by excavation from the Open Beach of Dunaújváros in 2009. In 2010 the whole sediment dump was planted with trees, and many kinds of weeds were also grown here. The main aim of this research is to analyse the heavy metal content of the sediment dump in Dunaújváros. Furthermore, the heavy metal content of the parella (Rumex obtusifolius L.), perennial rye-grass (Lolium perenne) and riparian sedges (Carex riparia) which are growing on the sediment dump were also analysed. The distribution and the accumulation of the heavy metals inside this plant can be also determined with these measurements.
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Labour Market Success of Engineering Graduates
1-8Views:195The study aims to explore the labor market success of engineering graduates. The role of science field in the areas of job search time, earnings and job congruence proved significant. The engineering discipline proved to be outstanding in all the tree tested indicators. The database was GraduatesTracking System 2011-2012 (DPR 2011-2012). The indicators of employ ability could be compared among the young graduates of domestic higher education institutions in the engineering science, and similarities and differences could be highlighted
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Floodresc – Disaster Management in case of Flooding in the Hernad Watershed
181-187Views:187The aim of the Floodresc project is to develop a GIS based decision support system that can help the defense and rescue operations of the Disaster Management Directorate during any floods in the Hernád River. In the project, a geospatial database covering the entire river basin, a modeling application for predicting the extent of flooded areas in time, and a logistics model supporting defense-related transportation tasks will be developed.
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Vocational Training Students’ Self-Assessment in Higher Education
223-231Views:288This paper is intended to clarify the phenomenon that lower achieving students tend to evaluate their own academic performance less accurately than those who are better in their studies. Former studies have found that lower performers generally overestimate while higher performers underestimate their performance. The current study analyses the self-assessment behaviour and efficiency among Hungarian higher vocational education students. We found that the lowest level of higher education students typically overestimate themselves. Over results strengthen the empirical evidences in former studies that higher-achieving students evaluate their performance more accurately than their lower achieving fellows. Furthermore we found that lower-achieving students tend to evaluate their performance less accurate and typically over-assess their examination results than high-achieving students, who generally evaluate themselves more accurate and rather underestimate. We analysed the difference between the two genders too. Compared to female students, male tend to evaluate their results more accurate and overestimate their own performance more.
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A Domestic Investigation of Online Banking
22-32Views:483Nowadays, the spread of digitalization is constantly increasing. The current rising generation is already a “digital native”. As part of digitalisation, mention should be made of the Internet, which has been given a prominent role in our daily lives. We search for information on the Internet, we communicate, we buy. Due to these factors and the pandemic in 2020, internet administration has become a priority. Banks need to constantly adapt to meet their needs, promoting convenient, home banking. In the course of our research, we focused on this continuous adaptation and the resulting improvements. The research focused on the Internet and mobile banks of large Hungarian banks. Sampling took place over 2 periods. Among the primary research tools, we chose document analysis, and netnography. In the research, we compared the functions available on the platforms, the consumer perception of mobile banks and other variables. Based on the results obtained during the research, it can be stated that domestic banks are constantly developing their application along different trends and trying to adapt to changing needs. Serious changes had to be made in the mobile banks of most large banks, even with the permanent elimination of their former mobile banks. Changes can have a strong impact on consumers, who are often more likely to have a negative view of them. Digitalisation is also particularly important in this sector. The study contains the details of the course work prepared for the Scientific Students’ Associations Conference.
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Maintenance Strategies and Life Cycle Costs of Renewable Energy Systems
106-116Views:215Life cycle costs are important factors in decisions on renewable energy investments. Since maintenance costs generally constitute a high portion of the life cycle costs, the maintenance strategy applied in a project can affect the bottom line significantly. The effective maintenance tools used in the production industry (e.g., diagnostics, condition monitoring, data management, integrated information systems, machine learning, and automated decision making) can be involved in planning and maintenance of renewable energy systems to gain the benefits of these approaches. In this paper the effects of maintenance strategies on life cycle costs are investigated and the benefits of up-to-date condition monitoring techniques are presented through case studies.
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Determination of the accumulation of heavy metals of river sediment by plants
46-53Views:217Danube is the main river of Hungary. Danube and its floodplains and oxbow lakes are operating as ecological corridors, although their industrial, logistic and touristic role is not negligible. It is well known, that from the source to the estuary of the river Danube there are many industrial facilities. This heavy industrial pollution had effected on the water quality. The most dangerous components of the sewage water of these facilities are heavy metals, which can be found in the water as well as in the sediment. These toxic elements can cause significant health risks, because they can accumulate in the food-chain. The main aim of our research is to investigate the accumulation rate of the heavy metal content of the river sediment in the different parts of the test plants. The main sampling place of our research was a sediment dump was created by excavation from the Open Beach of Dunaújváros in 2009. During our measurements we analysed the cadmium, nickel, lead, chromium, copper and zinc concentration of the sediment and the plants. The test plants, which are growing on this sampling place, were parella (Rumex patientia), perennial rye-grass (Lolium perenne), sedge (Carex riparia), bistort (Persicaria maculosa). The extraction of the heavy metal content of the samples was made according to the MSZ Hungarian standard. The concentration of heavy metals were analysed with AAS (atom absorption spectrometer). According to our results we determined that parella could accumulate cadmium, nickel, chromium and zinc in its upper stem, on the other hand bistort could accumulate these elements mainly in its leaves. These information will be important in the case of the in-situ remediation of a polluted area in the future.
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A vállalati vagyon és a finanszírozás összefüggései a vagyonértékelés szempontrendszere szerint
69-79Views:299The availability for financial sources can be the key factor of competitiveness of enterprises. Under favourable conditions it can result in not only economic growth and conjunctural effects but indirectly it also has a positive influence on social level as well. In the first part of the article we make an overview on enterprise financing in both social and economic context and try to give an overall concept. In the second part we analyse the framework of financing, discuss the national and international specifications of financing, and finally, in the third part we analyse the background of enterprise financing based on the principles of asset appraisal.
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Ethical Attitudes by Students
1-8Views:206We can read about empirical researches in connection with ethical behavior or attitudes by business students only in few inland but much more foreign papers. These studies examine: which behaviors are ethical or unethical by students and how strictare students in evaluation of situations. This paper aims to explore the attitudes of business students at the University of Debrecen: what they-as future organizational leaders-think about morality of a work situation.
