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Cadmium and mercury are widespread and non-biodegradable pollutants of great concern to human and animal health. In this study, the influence of exposure to low doses of cadmium and mercury on Wistar rats was investigated. The experiments aimed to identify suitable markers of chronic intoxication with heavy metals in rats. The subjects were 48 naive young rats (24 females and 24 males), four weeks old, grouped randomly into three distinct groups—control group, group exposed to cadmium and group exposed to mercury. The control group received sham treatment—clean untreated water. Cd exposed group received water containing cadmium chloride dihydrate and Hg exposed group received water with mercury dichloride. Both cadmium and mercury were administered to experimental rats in drinking water in concentrations exceeding the maximum acceptable concentration of these metals 500 times, i.e., 0.5 mg Hg and 2.5 mg Cd per liter of water. The results were evaluated quarterly during the experiment (52 weeks). Selected physiological parameters (life span, body weight changes and intake of food and water), reproductive parameters (number of births (litters), number of born pups and number of raised pups) and toxicological parameters (average daily dose, total dose received and the amount of toxic metal received) were studied. The results of the experiments indicate differences between both individual groups and between males and females, which confirmed that these parameters are essential in such experiments of chronic exposure to subtoxic doses of heavy metals.
Iveta Cimboláková; Tatiana Kimáková; Henrieta Pavolová; Tomáš Bakalár; Dušan Kudelas; Andrea Seňová. Simulation of Chronic Intoxication in Rats Exposed to Cadmium and Mercury. Applied Sciences 2020, 10, 8066 .
AMA StyleIveta Cimboláková, Tatiana Kimáková, Henrieta Pavolová, Tomáš Bakalár, Dušan Kudelas, Andrea Seňová. Simulation of Chronic Intoxication in Rats Exposed to Cadmium and Mercury. Applied Sciences. 2020; 10 (22):8066.
Chicago/Turabian StyleIveta Cimboláková; Tatiana Kimáková; Henrieta Pavolová; Tomáš Bakalár; Dušan Kudelas; Andrea Seňová. 2020. "Simulation of Chronic Intoxication in Rats Exposed to Cadmium and Mercury." Applied Sciences 10, no. 22: 8066.
This paper investigates the effect of sodium hexametaphosphate (SHMP) depressant/dispersant in the presence of methyl isobutyl carbinol (MIBC) frother and soluble starch (SS) depressant on the flotation kinetics of talc ore. Emphasis is on a comparison between the evaluation of a custom design of experiment (DoE) using the multilinear regression analysis (MRA) and response surface methodology (RSM) approach. Although analysis of variance (ANOVA) is a good first step in the evaluation of the effect of factors on froth flotation processing, it nonetheless only reveals the effects that are the same under all conditions. In the case of SHMP, its effect on separation efficiency is positive; however, if it is used along with SS, the effect is negative. Moreover, if a higher frother dosage is used, the effect of SHMP on separation efficiency is negligible.
Michal Marcin; Martin Sisol; Dušan Kudelas; Igor Ďuriška; Tomáš Holub. The Differences in Evaluation of Flotation Kinetics of Talc Ore Using Statistical Analysis and Response Surface Methodology. Minerals 2020, 10, 1003 .
AMA StyleMichal Marcin, Martin Sisol, Dušan Kudelas, Igor Ďuriška, Tomáš Holub. The Differences in Evaluation of Flotation Kinetics of Talc Ore Using Statistical Analysis and Response Surface Methodology. Minerals. 2020; 10 (11):1003.
Chicago/Turabian StyleMichal Marcin; Martin Sisol; Dušan Kudelas; Igor Ďuriška; Tomáš Holub. 2020. "The Differences in Evaluation of Flotation Kinetics of Talc Ore Using Statistical Analysis and Response Surface Methodology." Minerals 10, no. 11: 1003.
In this paper, we focused on the statistical evaluation of inputs to a biogas plant processing a mixture of kitchen waste and agricultural crops to ensure stable biogas production. The aim of the research was to identify the components of the input substrates that will ensure the maximum yield of CH4 and the substrates that increase the production of H2S. By a suitable combination of substrates, it is possible to optimize the production of biogas from the biogas plant. We analyzed a sample of 858 measurements, which were carried out in a selected biogas station for a period of 2.5 years. We were interested in differences in production of CH4, O2, and H2S outputs depending on the composition of inputs. From 17 inputs, 125 substrates were formed. The significance of the influence of individual substrates as categorical variables with the achieved numerical values was assessed by means of ANOVA analysis. Selected substrates were sorted based on CH4 and H2S production using graphical methods (bubble graphs) into four quadrants defining the desired and undesired values of the output variables. We identified a total of 20 suitable and 11 unsuitable substrates to produce quality biogas. Sorghum silage substrate was defined as a substrate that significantly increases the proportion of H2S in biogas.
Peter Tauš; Dušan Kudelas; Marcela Taušová; Ľubomíra Gabániová. Statistical Approach for Assessing the Suitability of Substrates for a Biogas Plant. Sustainability 2020, 12, 9044 .
AMA StylePeter Tauš, Dušan Kudelas, Marcela Taušová, Ľubomíra Gabániová. Statistical Approach for Assessing the Suitability of Substrates for a Biogas Plant. Sustainability. 2020; 12 (21):9044.
Chicago/Turabian StylePeter Tauš; Dušan Kudelas; Marcela Taušová; Ľubomíra Gabániová. 2020. "Statistical Approach for Assessing the Suitability of Substrates for a Biogas Plant." Sustainability 12, no. 21: 9044.
In the European Union, basic strategy results from the need to provide intelligent, sustainable, and inclusive growth, along with respect to social and economic impacts of waste treatment. The paper focuses on municipal waste and its separation. Generally, within global waste management initiatives, the main goal is to minimize the negative effects of waste on the environment, as well as to increase and optimize the sources’ efficiency in the waste economy. Research on municipal waste development and its separation was done in individual regions of Slovakia to find if socially weaker regions have worse waste treatment. The results were compared according to the waste development per inhabitant and per household, as well as through rate indexes, which are connected to relationships between waste, social, and economic indexes. The results confirmed research results from other countries that show that the volume of municipal waste is increasing due to increased living standards of inhabitants. However, on the other hand, waste separation rates also increased—mainly based on the legislative support.
Marcela Taušová; Eva Mihaliková; Katarína Čulková; Beáta Stehlíková; Peter Tauš; Dušan Kudelas; Ľubomír Štrba; Lucia Domaracká. Analysis of Municipal Waste Development and Management in Self-Governing Regions of Slovakia. Sustainability 2020, 12, 5818 .
AMA StyleMarcela Taušová, Eva Mihaliková, Katarína Čulková, Beáta Stehlíková, Peter Tauš, Dušan Kudelas, Ľubomír Štrba, Lucia Domaracká. Analysis of Municipal Waste Development and Management in Self-Governing Regions of Slovakia. Sustainability. 2020; 12 (14):5818.
Chicago/Turabian StyleMarcela Taušová; Eva Mihaliková; Katarína Čulková; Beáta Stehlíková; Peter Tauš; Dušan Kudelas; Ľubomír Štrba; Lucia Domaracká. 2020. "Analysis of Municipal Waste Development and Management in Self-Governing Regions of Slovakia." Sustainability 12, no. 14: 5818.
Slovakia is renowned for its remarkable and rare natural beauty, abundant in natural resources with several noteworthy geological features. However, the protection of nature has primarily been understood as the protection of biodiversity in Slovakia. For the conservation of geological diversity and landforms, very little has been done. Geoconservation or the protection of geodiversity is being applied to specific places known as geosites, where significant earth elements (geological, paleontological, geomorphological, hydrological and pedological) are protected, preserved and managed. Most geosites benefit from existing protected areas. Their protection is random and does not result from the recognition of their values. As discussed in the paper, geotourism related activities can undoubtedly contribute to promoting the protection of geosites in protected areas. Besides, through a geotourism approach, geodiversity can obtain public attention and positively influence the state of protected areas by its activities. Such initiatives not only can improve the protection of geological sites but also can play a crucial role in sustainable tourism development.
Ľubomír Štrba; Jana Kolačkovská; Dušan Kudelas; Branislav Kršák; Csaba Sidor. Geoheritage and Geotourism Contribution to Tourism Development in Protected Areas of Slovakia—Theoretical Considerations. Sustainability 2020, 12, 2979 .
AMA StyleĽubomír Štrba, Jana Kolačkovská, Dušan Kudelas, Branislav Kršák, Csaba Sidor. Geoheritage and Geotourism Contribution to Tourism Development in Protected Areas of Slovakia—Theoretical Considerations. Sustainability. 2020; 12 (7):2979.
Chicago/Turabian StyleĽubomír Štrba; Jana Kolačkovská; Dušan Kudelas; Branislav Kršák; Csaba Sidor. 2020. "Geoheritage and Geotourism Contribution to Tourism Development in Protected Areas of Slovakia—Theoretical Considerations." Sustainability 12, no. 7: 2979.
Slag is one of the by-products of the energy industry, which is suitable for secondary industrial processing. Although slag has been successfully used in industrial production for several decades, its use does not achieve the level of its potential. Today, to achieve a sustainable construction industry, alternative types of cement have been extensively investigated. Geopolymer is a kind of material which is obtained from the alkaline activator and it can be produced from the industrial wastes or by-products. In this study, SiO2/Na2O ratio and the amount of Na2O in activation solution parameters of alkali-activated materials were tested how they affect the strengths of hardened geopolymers from ground granulated blast furnace slag (GGBFS). Compressive and flexural strength tests were conducted, and the results were analyzed by analysis of variance (ANOVA). Strengths were tested after 7, 28, and 90 days.
Martin Sisol; Dušan Kudelas; Michal Marcin; Tomáš Holub; Peter Varga. Statistical Evaluation of Mechanical Properties of Slag Based Alkali-Activated Material. Sustainability 2019, 11, 5935 .
AMA StyleMartin Sisol, Dušan Kudelas, Michal Marcin, Tomáš Holub, Peter Varga. Statistical Evaluation of Mechanical Properties of Slag Based Alkali-Activated Material. Sustainability. 2019; 11 (21):5935.
Chicago/Turabian StyleMartin Sisol; Dušan Kudelas; Michal Marcin; Tomáš Holub; Peter Varga. 2019. "Statistical Evaluation of Mechanical Properties of Slag Based Alkali-Activated Material." Sustainability 11, no. 21: 5935.
Recently, the use of photovoltaic (PV) cells and the increase in the number of photovoltaic power plants has led to a detailed examination of their operating parameters. In this article, we discuss material and operating parameter influences on the performance and efficiency of photovoltaic panels in a photovoltaic power plant. The plant consisted of 3600 pieces of polycrystalline PV panels from Renewable Energy Corporation (REC) Solar (type REC 230AE) with a maximum power of 230 Wp. Parameter measurements were made three years after the power plant was started. The measured and computed data were statistically processed using multidimensional statistical methods where the relationships between input and output variables were examined, which was subsequently quantified by regression analysis. Using the ANOVA, the variability of the measured efficiency of the panels and the performance for individual years was examined. Efficiency has been found to increase significantly over the years. The reason for this is the statistically proven prevailing operating time of the PV power plant in conditions with lower temperature than standard operating conditions (25 °C). Ageing was not confirmed in optimal conditions and calculated efficiency was constant.
Dušan Kudelas; Marcela Taušová; Peter Tauš; Ľubomíra Gabániová; Ján Koščo. Investigation of Operating Parameters and Degradation of Photovoltaic Panels in a Photovoltaic Power Plant. Energies 2019, 12, 3631 .
AMA StyleDušan Kudelas, Marcela Taušová, Peter Tauš, Ľubomíra Gabániová, Ján Koščo. Investigation of Operating Parameters and Degradation of Photovoltaic Panels in a Photovoltaic Power Plant. Energies. 2019; 12 (19):3631.
Chicago/Turabian StyleDušan Kudelas; Marcela Taušová; Peter Tauš; Ľubomíra Gabániová; Ján Koščo. 2019. "Investigation of Operating Parameters and Degradation of Photovoltaic Panels in a Photovoltaic Power Plant." Energies 12, no. 19: 3631.
The constant consumption of resources exerts pressure on the environment. In this sense, waste management has obtained increasing attention from the view of a circular economy. The European Union deals with these mentioned aspects, trying maintain long-term competitiveness and to provide sustainable development in accordance with all related environmental aspects. This paper focuses on the evaluation of the production of communal waste in 36 EU countries. The main aim is to evaluate the success of countries’ efforts to decrease waste production and increase recycling rates. The methodology used for the evaluation included data collected from the publicly available database Eurostat, consequent analyses and evaluation in the statistical software JMP 13 through regression, distribution, and cluster analysis, and the interpretation of the results. The results of the cluster analysis showed that despite clear EU waste management legislation, EU member states have significantly different waste management systems at the national level. However, generally, we could see positive correlation between the generation of waste and recycling rates. Although, Malta, Austria, Greece, and Norway recorded a decreasing level of waste recycling over the last several years, some countries (Slovakia, Poland, Czech Republic, Latvia, Lithuania) had significantly lower recycling rates accompanied by low landfill taxes. The evaluation of waste production and recycling can be used for government policy in the area of waste management, as well as for individual communities dealing with communal waste.
Marcela Taušová; Eva Mihaliková; Katarína Čulková; Beáta Stehlíková; Peter Tauš; Dušan Kudelas; Ľubomír Štrba. Recycling of Communal Waste: Current State and Future Potential for Sustainable Development in the EU. Sustainability 2019, 11, 2904 .
AMA StyleMarcela Taušová, Eva Mihaliková, Katarína Čulková, Beáta Stehlíková, Peter Tauš, Dušan Kudelas, Ľubomír Štrba. Recycling of Communal Waste: Current State and Future Potential for Sustainable Development in the EU. Sustainability. 2019; 11 (10):2904.
Chicago/Turabian StyleMarcela Taušová; Eva Mihaliková; Katarína Čulková; Beáta Stehlíková; Peter Tauš; Dušan Kudelas; Ľubomír Štrba. 2019. "Recycling of Communal Waste: Current State and Future Potential for Sustainable Development in the EU." Sustainability 11, no. 10: 2904.
The presented paper deals with attenuation of seismic waves, which depends on the degree of disintegration of the rock environment in which seismic waves are propagated due to the explosion of explosive charges during blasting operations. Measurements of the impact of seismic waves were conducted to determine the best possible way to absorb these waves. The aim of the article is to identify the existence of a critical distance and the determination of the critical point from which the propagation of the velocity is not dependent on the type of deposit and the environment in which the seismic wave propagates. Statistical methods were used for these findings. The result is the determination of the distance of 80 m in which the speed on the individual deposits varied. From this limit on, there was no significant difference in the speed of propagation on the individual deposits.
Dušan Kudelas; Blažej Pandula; Michal Cehlar; Marcela Taušová; Ján Koščo. Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting. Shock and Vibration 2019, 2019, 1 -8.
AMA StyleDušan Kudelas, Blažej Pandula, Michal Cehlar, Marcela Taušová, Ján Koščo. Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting. Shock and Vibration. 2019; 2019 ():1-8.
Chicago/Turabian StyleDušan Kudelas; Blažej Pandula; Michal Cehlar; Marcela Taušová; Ján Koščo. 2019. "Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting." Shock and Vibration 2019, no. : 1-8.
Drinking water management is becoming more and more important these days as water consumption and sewage production are constantly increasing in Slovak households. Although Slovakia is not considered a water-poor country, rainwater utilisation in households is becoming widespread. One of the possibilities of reducing the costs in household budgets is the use of rainwater in meeting the daily needs wherever the water quality parameters for potable water are not required for example flushing toilets, washing machines, watering of gardens, and so on. Other positive economic and environmental aspects of the use of rainwater can be considered the protection of water resources, which determines the global status of water management in the Slovak Republic, hence the environment. Based on the results of the study significant reduction of charges for drinking water can be achieved by the use of rainwater i.e. roundly 225 Eur per year in total budget can be saved compared to an average household.
Henrieta Pavolová; Tomáš Bakalár; Dušan Kudelas; Petra Puškárová. Environmental and economic assessment of rainwater application in households. Journal of Cleaner Production 2018, 209, 1119 -1125.
AMA StyleHenrieta Pavolová, Tomáš Bakalár, Dušan Kudelas, Petra Puškárová. Environmental and economic assessment of rainwater application in households. Journal of Cleaner Production. 2018; 209 ():1119-1125.
Chicago/Turabian StyleHenrieta Pavolová; Tomáš Bakalár; Dušan Kudelas; Petra Puškárová. 2018. "Environmental and economic assessment of rainwater application in households." Journal of Cleaner Production 209, no. : 1119-1125.
Proceeding from the general ideology of the sustainable development concept, the issues of determining the long-term social and environmental consequences of modern economic development are fundamental, and the success of implementing the ideas of economic modernization and energy efficiency depends on the active position of state and regional authorities. To move to the path of sustainable development, carefully coordinated actions in all spheres of the economy are needed. It requires a model of an organizational and economic mechanism that would ensure the transition to a "green economy", the reorientation of economic, environmental and social institutions to priority areas. Clearly, at the moment, there is an urgent need for moving to an economic model that will improve human well-being, while preserving resources and not exposing future generations to significant environmental risks. To conduct an effective environmental policy and to assess the overall effectiveness of “green” growth, it is proposed to develop a model for ensuring a transition to a "green economy", which will allow understanding the level and coordination of activities, the scale and boundaries of their impact, and most comprehensively process information on possible projected risks and possible negative effects (pollution, degradation of ecosystems).
Dusan Kudelas; Eugen Domru; Adrian Stoianov; Dénes Peters. International Experience, Principles and Conditions for the Transition to a “Green Economy”. E3S Web of Conferences 2018, 41, 04023 .
AMA StyleDusan Kudelas, Eugen Domru, Adrian Stoianov, Dénes Peters. International Experience, Principles and Conditions for the Transition to a “Green Economy”. E3S Web of Conferences. 2018; 41 ():04023.
Chicago/Turabian StyleDusan Kudelas; Eugen Domru; Adrian Stoianov; Dénes Peters. 2018. "International Experience, Principles and Conditions for the Transition to a “Green Economy”." E3S Web of Conferences 41, no. : 04023.
The paper deals with the results of research on the influence of material and operating parameters on the performance characteristics and efficiency of photovoltaic panels. The disadvantage of PV panels is that their performance depends on a number of factors such as the intensity of the sun's radiation, the outside air temperature, the surface temperature of the photovoltaic panel, its pollution, shielding, etc. In the paper is analyzed the model photovoltaic power plant, from which data were obtained during the monitored period and subsequently the progress of individually measured parameters was evaluated.
Peter Tauš; Jana Tomčejová; Marcela Tausova; Ľubomíra Gabániová; Dušan Kudelas; Matúš Jeňo; Daniel Šlosár. Research of material and power of photovoltaic panels of various types of degradation in operating conditions. MATEC Web of Conferences 2018, 168, 06008 .
AMA StylePeter Tauš, Jana Tomčejová, Marcela Tausova, Ľubomíra Gabániová, Dušan Kudelas, Matúš Jeňo, Daniel Šlosár. Research of material and power of photovoltaic panels of various types of degradation in operating conditions. MATEC Web of Conferences. 2018; 168 ():06008.
Chicago/Turabian StylePeter Tauš; Jana Tomčejová; Marcela Tausova; Ľubomíra Gabániová; Dušan Kudelas; Matúš Jeňo; Daniel Šlosár. 2018. "Research of material and power of photovoltaic panels of various types of degradation in operating conditions." MATEC Web of Conferences 168, no. : 06008.
Michal Cehlar; Dusan Kudelas. Developed lighting technology for Smart Cities. Proceedings of the SmartCity360 2016 2017, 1 .
AMA StyleMichal Cehlar, Dusan Kudelas. Developed lighting technology for Smart Cities. Proceedings of the SmartCity360 2016. 2017; ():1.
Chicago/Turabian StyleMichal Cehlar; Dusan Kudelas. 2017. "Developed lighting technology for Smart Cities." Proceedings of the SmartCity360 2016 , no. : 1.
The paper deals with the elimination of heat losses in a flat low-pressure solar collector caused by direct contact of outlet pipefitting and the Al–Mg collector box. This is manifested by reduced thermal efficiency of the solar collector, especially in cold season, which is in direct conflict with its application, i.e., high-temperature application and application in cold conditions. The solution lies in the proposed new structural element—the vacuum thermal insulation bushing, which is able to simultaneously provide vacuum tightness of the collector box and interrupt the existing thermal conductive connection. The design philosophy was to transfer the vacuum insulating function component from the original pipe—collector box connection to the thermally insulated place bushing—collector box. Two prototypes were constructed and built into experimental vacuum chamber. Significant increase in the temperature gradient was found in performed experiments. Thermal insulation function, vacuum tightness, and resistance to thermomechanical stress have been demonstrated. The thermal insulation function has also been described through the simulations on a computational model, using finite volume method. The proposed solution of bushing has also successfully become the subject of patent protection.
Radim Rybár; Dusan Kudelas; Martin Beer; Jana Horodníková. Elimination of Thermal Bridges in the Construction of a Flat Low-Pressure Solar Collector by Means of a Vacuum Thermal Insulation Bushing. Journal of Solar Energy Engineering 2015, 137, 054501 .
AMA StyleRadim Rybár, Dusan Kudelas, Martin Beer, Jana Horodníková. Elimination of Thermal Bridges in the Construction of a Flat Low-Pressure Solar Collector by Means of a Vacuum Thermal Insulation Bushing. Journal of Solar Energy Engineering. 2015; 137 (5):054501.
Chicago/Turabian StyleRadim Rybár; Dusan Kudelas; Martin Beer; Jana Horodníková. 2015. "Elimination of Thermal Bridges in the Construction of a Flat Low-Pressure Solar Collector by Means of a Vacuum Thermal Insulation Bushing." Journal of Solar Energy Engineering 137, no. 5: 054501.
Energy production from previously unused wood waste, which is produced by mining and manipulation in forestry, wood processing plants and in plants and also more efficient energy recovery firewood in the total amount of about 500 000 t, can annually replace the same amount of brown sorted coal. This has a significant national- economic importance in saving precious fuel but the financial effect greatly exceeding the environmental- ecological benefits resulting from the reduction of environmental burdens, exhausts and incombustible solid residues. These are only a few advantages and also the reasons why it is necessary especially at present days to deal with biomass and wood waste as well. The article therefore outlines a comparison of the previous use of this energy source as well as its possible future development.
Michal Cehlár; Zuzana Jurkasová; Dušan Kudelas; Róbert Tutko; Jan Mendel. Using Wood Waste in Slovakia and its Real Energy Potential. Advanced Materials Research 2014, 1001, 131 -140.
AMA StyleMichal Cehlár, Zuzana Jurkasová, Dušan Kudelas, Róbert Tutko, Jan Mendel. Using Wood Waste in Slovakia and its Real Energy Potential. Advanced Materials Research. 2014; 1001 ():131-140.
Chicago/Turabian StyleMichal Cehlár; Zuzana Jurkasová; Dušan Kudelas; Róbert Tutko; Jan Mendel. 2014. "Using Wood Waste in Slovakia and its Real Energy Potential." Advanced Materials Research 1001, no. : 131-140.
The East Slovak Basin Area is from genetic viewpoint area which represents longitudinal intramount depression filled by Neogene sediments and volcanics. This basin morphologically represents north-eastern promontory of Pannonian Basins System. During more than 50 years of systematic oil-geological exploration a quantity of knowledge was gathered here, as on geological structure and hydrocarbon fields as on thermal setting and geothermal waters. It is a case of nearly 20 000 analysed water samples and temperature measurements in the depth span from surface up to 4200m what enables us to distinguish in this region several prospective geothermal areas.
Michal Cehlár; Zuzana Jurkasová; Dušan Kudelas; Róbert Tutko; Jan Mendel. Geothermal Power Plant in Conditions of Geological and Hydrological Characteristics. Advanced Materials Research 2014, 1001, 63 -74.
AMA StyleMichal Cehlár, Zuzana Jurkasová, Dušan Kudelas, Róbert Tutko, Jan Mendel. Geothermal Power Plant in Conditions of Geological and Hydrological Characteristics. Advanced Materials Research. 2014; 1001 ():63-74.
Chicago/Turabian StyleMichal Cehlár; Zuzana Jurkasová; Dušan Kudelas; Róbert Tutko; Jan Mendel. 2014. "Geothermal Power Plant in Conditions of Geological and Hydrological Characteristics." Advanced Materials Research 1001, no. : 63-74.
Dusan Kudelas. THE POTENTIAL OF UTILIZATION AND EVALUATION OF POLYMETALLIC NODULES BED IN CLIPPERTON-CLARION LOCALITY IN PACIFIC OCEAN. 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION 2014, 1 .
AMA StyleDusan Kudelas. THE POTENTIAL OF UTILIZATION AND EVALUATION OF POLYMETALLIC NODULES BED IN CLIPPERTON-CLARION LOCALITY IN PACIFIC OCEAN. 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION. 2014; ():1.
Chicago/Turabian StyleDusan Kudelas. 2014. "THE POTENTIAL OF UTILIZATION AND EVALUATION OF POLYMETALLIC NODULES BED IN CLIPPERTON-CLARION LOCALITY IN PACIFIC OCEAN." 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION , no. : 1.
Dusan Kudelas. POSSIBLE COMPLICATIONS AT TRANSPORT OF POLYMETALLIC NODULES FROM SEABED BY MEANS OF SELF-PROPELLED MINING MACHINE WITH FLEXIBLE RISER. 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING 2013, 1 .
AMA StyleDusan Kudelas. POSSIBLE COMPLICATIONS AT TRANSPORT OF POLYMETALLIC NODULES FROM SEABED BY MEANS OF SELF-PROPELLED MINING MACHINE WITH FLEXIBLE RISER. 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. 2013; ():1.
Chicago/Turabian StyleDusan Kudelas. 2013. "POSSIBLE COMPLICATIONS AT TRANSPORT OF POLYMETALLIC NODULES FROM SEABED BY MEANS OF SELF-PROPELLED MINING MACHINE WITH FLEXIBLE RISER." 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING , no. : 1.
Presented in the paper by the authors is the developed parallel manifold header designed for vacuum tube collectors, working on the principle of heat pipes. The objective was to increase the heat exchange surface of condenser casings and provide uniform heat transfer of the individual condensers. When designing it was agreed to draft a compact manifold header, which in a hermetically sealed casing, specific for the external hydraulic flow channels, incorporates shaped blocks of different materials with the foam structure. Consideration was given to the Cu metal foam and foam glass, since the use of these in solar thermal technology is experienced. The internal arrangement of individual parts (blocks) of the manifold header, by a combination of permeable and impermeable foam materials we achieved internal separation of hydraulic channels and partial thermal isolation of the individual heat exchange chambers made from metal foam (MF), containing condenser capsules. Processes of media and heat transfer (thermal and fluid) through numerical simulations were examined. Results show that it was managed to reach the set targets, moreover, to reach them within a certain timeframed conditions.
Radim Rybár; Dušan Kudelas; Jana Horodníková; Martin Beer. Parallel Manifold Header on Foam Material Basis for Vacuum Tube Solar Collectors. Advanced Science Letters 2013, 19, 591 -594.
AMA StyleRadim Rybár, Dušan Kudelas, Jana Horodníková, Martin Beer. Parallel Manifold Header on Foam Material Basis for Vacuum Tube Solar Collectors. Advanced Science Letters. 2013; 19 (2):591-594.
Chicago/Turabian StyleRadim Rybár; Dušan Kudelas; Jana Horodníková; Martin Beer. 2013. "Parallel Manifold Header on Foam Material Basis for Vacuum Tube Solar Collectors." Advanced Science Letters 19, no. 2: 591-594.