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The time-range of applicability of various energy-storage technologies are limited by self-discharge and other inevitable losses. While batteries and hydrogen are useful for storage in a time-span ranging from hours to several days or even weeks, for seasonal or multi-seasonal storage, only some traditional and quite costly methods can be used (like pumped-storage plants, Compressed Air Energy Storage or energy tower). In this paper, we aim to show that while the efficiency of energy recovery of Power-to-Methane technology is lower than for several other methods, due to the low self-discharge and negligible standby losses, it can be a suitable and cost-effective solution for seasonal and multi-seasonal energy storage.
Kristóf Kummer; Attila Imre. Seasonal and Multi-Seasonal Energy Storage by Power-to-Methane Technology. Energies 2021, 14, 3265 .
AMA StyleKristóf Kummer, Attila Imre. Seasonal and Multi-Seasonal Energy Storage by Power-to-Methane Technology. Energies. 2021; 14 (11):3265.
Chicago/Turabian StyleKristóf Kummer; Attila Imre. 2021. "Seasonal and Multi-Seasonal Energy Storage by Power-to-Methane Technology." Energies 14, no. 11: 3265.
The elastic properties of f.c.c. hard sphere crystals with periodic arrays of nanoinclusions filled by hard spheres of another diameter are the subject of this paper. It has been shown that a simple modification of the model structure is sufficient to cause very significant changes in its elastic properties. The use of inclusions in the form of joined (mutually orthogonal) layers and channels showed that the resulting tetragonal system exhibited a complete lack of auxetic properties when the inclusion spheres reached sufficiently large diameter. Moreover, it was very surprising that this hybrid inclusion, which can completely eliminate auxeticity, was composed of components that, alone, in these conditions, enhanced the auxeticity either slightly (layer) or strongly (channel). The study was performed with computer simulations using the Monte Carlo method in the isothermal-isobaric (
Jakub Narojczyk; Krzysztof Wojciechowski; Jerzy Smardzewski; Attila Imre; Joseph Grima; Mikołaj Bilski. Cancellation of Auxetic Properties in F.C.C. Hard Sphere Crystals by Hybrid Layer-Channel Nanoinclusions Filled by Hard Spheres of Another Diameter. Materials 2021, 14, 3008 .
AMA StyleJakub Narojczyk, Krzysztof Wojciechowski, Jerzy Smardzewski, Attila Imre, Joseph Grima, Mikołaj Bilski. Cancellation of Auxetic Properties in F.C.C. Hard Sphere Crystals by Hybrid Layer-Channel Nanoinclusions Filled by Hard Spheres of Another Diameter. Materials. 2021; 14 (11):3008.
Chicago/Turabian StyleJakub Narojczyk; Krzysztof Wojciechowski; Jerzy Smardzewski; Attila Imre; Joseph Grima; Mikołaj Bilski. 2021. "Cancellation of Auxetic Properties in F.C.C. Hard Sphere Crystals by Hybrid Layer-Channel Nanoinclusions Filled by Hard Spheres of Another Diameter." Materials 14, no. 11: 3008.
The increase of the maximal cycle temperature is considered as one of the best tools to increase cycle efficiency for all thermodynamic cycles, including Organic Rankine Cycles (ORC). Technically, this can be done in various ways, but probably the best solution is the use of hybrid systems, i.e., using an added high-temperature heat source to the existing low-temperature heat source. Obviously, this kind of improvement has technical difficulties and added costs; therefore, the increase of efficiency by increasing the maximal temperature sometimes has technical and/or financial limits. In this paper, we would like to show that for an ideal, simple-layout ORC system, a thermodynamic efficiency-maximum can also exist. It means that for several working fluids, the thermodynamic efficiency vs. maximal cycle temperature function has a maximum, located in the sub-critical temperature range. A proof will be given by comparing ORC efficiencies with TFC (Trilateral Flash Cycle) efficiencies; for wet working fluids, further theoretical evidence can be given. The group of working fluids with this kind of maximum will be defined. Generalization for normal (steam) Rankine cycles and CO2 subcritical Rankine cycles will also be shown. Based on these results, one can conclude that the increase of the maximal cycle temperature is not always a useful tool for efficiency-increase; this result can be especially important for hybrid systems.
Aram Mohammed Ahmed; László Kondor; Attila R. Imre. Thermodynamic Efficiency Maximum of Simple Organic Rankine Cycles. Energies 2021, 14, 307 .
AMA StyleAram Mohammed Ahmed, László Kondor, Attila R. Imre. Thermodynamic Efficiency Maximum of Simple Organic Rankine Cycles. Energies. 2021; 14 (2):307.
Chicago/Turabian StyleAram Mohammed Ahmed; László Kondor; Attila R. Imre. 2021. "Thermodynamic Efficiency Maximum of Simple Organic Rankine Cycles." Energies 14, no. 2: 307.
The shape of the temperature vs. specific entropy diagram of a working fluid is very important to understanding the behavior of fluid during the expansion phase of the organic Rankine cycle or similar processes. Traditional wet-dry-isentropic classifications of these materials are not sufficient; several materials remain unclassified or misclassified, while materials listed in the same class might show crucial differences. A novel classification, based on the characteristic points of the T–s diagrams was introduced recently, listing eight different classes. In this paper, we present a map of these classes for a model material, namely, the van der Waals fluid in reduced temperature (i.e., reduced molecular degree of freedom) space; the latter quantity is related to the molar isochoric specific heat. Although van der Waals fluid cannot be used to predict material properties quantitatively, the model gives a very good and proper qualitative description. Using this map, some peculiarities related to T–s diagrams of working fluids can be understood.
Attila R. Imre; Réka Kustán; Axel Groniewsky. Mapping of the Temperature–Entropy Diagrams of van der Waals Fluids. Energies 2020, 13, 1519 .
AMA StyleAttila R. Imre, Réka Kustán, Axel Groniewsky. Mapping of the Temperature–Entropy Diagrams of van der Waals Fluids. Energies. 2020; 13 (6):1519.
Chicago/Turabian StyleAttila R. Imre; Réka Kustán; Axel Groniewsky. 2020. "Mapping of the Temperature–Entropy Diagrams of van der Waals Fluids." Energies 13, no. 6: 1519.
A novel method proposed to choose the optimal working fluid—solely from the point of view of expansion route—for a given heat source and heat sink (characterized by a maximum and minimum temperature). The basis of this method is the novel classification of working fluids using the sequences of their characteristic points on temperature-entropy space. The most suitable existing working fluid can be selected, where an ideal adiabatic (isentropic) expansion step between a given upper and lower temperature is possible in a way, that the initial and final states are both saturated vapour states and the ideal (isentropic) expansion line runs in the superheated (dry) vapour region all along the expansion. Problems related to the presence of droplets or superheated dry steam in the final expansion state can be avoided or minimized by using the working fluid chosen with this method. Results obtained with real materials are compared with those gained with model (van der Waals) fluids; based on the results obtained with model fluids, erroneous experimental data-sets can be pinpointed. Since most of the known working fluids have optimal expansion routes at low temperatures, presently the method is most suitable to choose working fluids for cryogenic cycles, applied for example for heat recovery during LNG-regasification. Some of the materials, however, can be applied in ranges located at relatively higher temperatures, therefore the method can also be applied in some limited manner for the utilization of other low temperature heat sources (like geothermal or waste heat) as well.
Attila R. Imre; Réka Kustán; Axel Groniewsky. Thermodynamic Selection of the Optimal Working Fluid for Organic Rankine Cycles. Energies 2019, 12, 2028 .
AMA StyleAttila R. Imre, Réka Kustán, Axel Groniewsky. Thermodynamic Selection of the Optimal Working Fluid for Organic Rankine Cycles. Energies. 2019; 12 (10):2028.
Chicago/Turabian StyleAttila R. Imre; Réka Kustán; Axel Groniewsky. 2019. "Thermodynamic Selection of the Optimal Working Fluid for Organic Rankine Cycles." Energies 12, no. 10: 2028.
Loss of coolant accidents (LOCA) are a serious type of accidents for nuclear reactors, when the integrity of the liquid-loop breaks. While in traditional pressurized water reactors, pressure drop can cause flash boiling, in Supercritical-Water Cooled reactors, the pressure drop can be terminated by processes with fast phase transition (flash boiling or steam collapse) causing pressure surge or the expansion can go smoothly to the dry steam region. Modelling the pressure drop of big and small LOCAs as isentropic and isenthalpic processes and replacing the existing reactor designs with a simplified supercritical loop, limiting temperatures for various outcomes will be given for 24.5 and 25 MPa initial pressure. Using the proposed method, similar accidents for chemical reactors and other equipment using supercritical fluids can be also analyzed, using only physical-chemical properties of the given supercritical fluid.
Gábor Györke; Attila R. Imre. Physical-chemical Background of the Potential Phase Transitions during Loss of Coolant Accidents in the Supercritical Water Loops of Various Generation IV Nuclear Reactor Types. Periodica Polytechnica Chemical Engineering 2019, 63, 333 -339.
AMA StyleGábor Györke, Attila R. Imre. Physical-chemical Background of the Potential Phase Transitions during Loss of Coolant Accidents in the Supercritical Water Loops of Various Generation IV Nuclear Reactor Types. Periodica Polytechnica Chemical Engineering. 2019; 63 (2):333-339.
Chicago/Turabian StyleGábor Györke; Attila R. Imre. 2019. "Physical-chemical Background of the Potential Phase Transitions during Loss of Coolant Accidents in the Supercritical Water Loops of Various Generation IV Nuclear Reactor Types." Periodica Polytechnica Chemical Engineering 63, no. 2: 333-339.
One of the most crucial challenges of sustainable development is the use of low-temperature heat sources (60–200 °C), such as thermal solar, geothermal, biomass, or waste heat, for electricity production. Since conventional water-based thermodynamic cycles are not suitable in this temperature range or at least operate with very low efficiency, other working fluids need to be applied. Organic Rankine Cycle (ORC) uses organic working fluids, which results in higher thermal efficiency for low-temperature heat sources. Traditionally, new working fluids are found using a trial-and-error procedure through experience among chemically similar materials. This approach, however, carries a high risk of excluding the ideal working fluid. Therefore, a new method and a simple rule of thumb—based on a correlation related to molar isochoric specific heat capacity of saturated vapor states—were developed. With the application of this thumb rule, novel isentropic and dry working fluids can be found applicable for given low-temperature heat sources. Additionally, the importance of molar quantities—usually ignored by energy engineers—was demonstrated.
Gábor Györke; Axel Groniewsky; Attila R. Imre. A Simple Method of Finding New Dry and Isentropic Working Fluids for Organic Rankine Cycle. Energies 2019, 12, 480 .
AMA StyleGábor Györke, Axel Groniewsky, Attila R. Imre. A Simple Method of Finding New Dry and Isentropic Working Fluids for Organic Rankine Cycle. Energies. 2019; 12 (3):480.
Chicago/Turabian StyleGábor Györke; Axel Groniewsky; Attila R. Imre. 2019. "A Simple Method of Finding New Dry and Isentropic Working Fluids for Organic Rankine Cycle." Energies 12, no. 3: 480.
Jakub W. Narojczyk; Krzysztof W. Wojciechowski; Konstantin V. Tretiakov; Jerzy Smardzewski; Fabrizio Scarpa; Pawel M. Piglowski; Mikolaj Kowalik; Attila R. Imre; Mikolaj Bilski. Auxetic Properties of a f.c.c. Crystal of Hard Spheres with an Array of [001]-Nanochannels Filled by Hard Spheres of Another Diameter (Phys. Status Solidi B 1/2019). physica status solidi (b) 2019, 256, 1 .
AMA StyleJakub W. Narojczyk, Krzysztof W. Wojciechowski, Konstantin V. Tretiakov, Jerzy Smardzewski, Fabrizio Scarpa, Pawel M. Piglowski, Mikolaj Kowalik, Attila R. Imre, Mikolaj Bilski. Auxetic Properties of a f.c.c. Crystal of Hard Spheres with an Array of [001]-Nanochannels Filled by Hard Spheres of Another Diameter (Phys. Status Solidi B 1/2019). physica status solidi (b). 2019; 256 (1):1.
Chicago/Turabian StyleJakub W. Narojczyk; Krzysztof W. Wojciechowski; Konstantin V. Tretiakov; Jerzy Smardzewski; Fabrizio Scarpa; Pawel M. Piglowski; Mikolaj Kowalik; Attila R. Imre; Mikolaj Bilski. 2019. "Auxetic Properties of a f.c.c. Crystal of Hard Spheres with an Array of [001]-Nanochannels Filled by Hard Spheres of Another Diameter (Phys. Status Solidi B 1/2019)." physica status solidi (b) 256, no. 1: 1.
Preliminary results on the influence of periodically distributed cylindrical nanoinclusions introduced into the f.c.c. hard sphere crystal on its elastic properties and the Poisson's ratio are presented. The nanoinclusions are oriented along the [001]‐direction and filled with hard spheres of diameter different from the spheres forming the matrix crystal. The Monte Carlo simulations show that symmetry of the crystal changes from the cubic to tetragonal one. In the case when spheres inside the inclusion are smaller than spheres forming the crystal, the changes of Poisson's ratio are qualitatively similar to the changes observed earlier in the Yukawa sphere crystal, that is, the introduction of nanochannels causes simultaneous decrease of the Poisson's ratio in the [110][1 1¯0]‐direction, and its increase in [110][001]‐direction. Filling the nanochannel with spheres having diameters greater than that of the spheres in the crystalline matrix, causes a decrease of the Poisson's ratio value from 0.065 down to −0.365 in [111][11 2¯]‐direction. The dependence of the minimal Poisson's ratio on the direction of the applied load is shown in a form of surfaces in spherical coordinates, for selected values of nanochannel particle diameters. The most negative value of the Poisson's ratio found amongst all systems studied was as low as −0.873.
Jakub W. Narojczyk; Krzysztof W. Wojciechowski; Konstantin V. Tretiakov; Jerzy Smardzewski; Fabrizio Scarpa; Pawel M. Piglowski; Mikolaj Kowalik; Attila R. Imre; Mikolaj Bilski. Auxetic Properties of a f.c.c. Crystal of Hard Spheres with an Array of [001]-Nanochannels Filled by Hard Spheres of Another Diameter. physica status solidi (b) 2018, 256, 1 .
AMA StyleJakub W. Narojczyk, Krzysztof W. Wojciechowski, Konstantin V. Tretiakov, Jerzy Smardzewski, Fabrizio Scarpa, Pawel M. Piglowski, Mikolaj Kowalik, Attila R. Imre, Mikolaj Bilski. Auxetic Properties of a f.c.c. Crystal of Hard Spheres with an Array of [001]-Nanochannels Filled by Hard Spheres of Another Diameter. physica status solidi (b). 2018; 256 (1):1.
Chicago/Turabian StyleJakub W. Narojczyk; Krzysztof W. Wojciechowski; Konstantin V. Tretiakov; Jerzy Smardzewski; Fabrizio Scarpa; Pawel M. Piglowski; Mikolaj Kowalik; Attila R. Imre; Mikolaj Bilski. 2018. "Auxetic Properties of a f.c.c. Crystal of Hard Spheres with an Array of [001]-Nanochannels Filled by Hard Spheres of Another Diameter." physica status solidi (b) 256, no. 1: 1.
For energy production and conversion, the use of thermodynamic cycles is still the most common way. To find the optimal solution is a multiparametric optimization problem, where some parameters are related to thermodynamic and physical chemistry, while others are associated with costs, safety, or even environmental issues. Concerning the thermodynamic aspects of the design, the selection of the working fluid is one of the crucial points. Here, we are going to show different types of adiabatic expansion processes in various pure working fluids, pointing out the ones preferred in Organic Rankine Cycles or in Trilateral Flash Cycles. The effect of these expansions on the layout of the cycles will also be presented. Finally, we are giving a few thumb-rules, derived from thermodynamic studies, useful for energy engineers to select the proper working fluid for a given thermal system.
Attila R. Imre; Axel Groniewsky. Various Ways of Adiabatic Expansion in Organic Rankine Cycle (ORC) and in Trilateral Flash Cycle (TFC). Zeitschrift für Physikalische Chemie 2018, 233, 577 -594.
AMA StyleAttila R. Imre, Axel Groniewsky. Various Ways of Adiabatic Expansion in Organic Rankine Cycle (ORC) and in Trilateral Flash Cycle (TFC). Zeitschrift für Physikalische Chemie. 2018; 233 (4):577-594.
Chicago/Turabian StyleAttila R. Imre; Axel Groniewsky. 2018. "Various Ways of Adiabatic Expansion in Organic Rankine Cycle (ORC) and in Trilateral Flash Cycle (TFC)." Zeitschrift für Physikalische Chemie 233, no. 4: 577-594.
Tritium may exist in several chemical and physical forms in workplaces, common occurrences are in vapor or liquid form (as tritiated water) and in organic form (e.g. thymidine) which can get into the body by inhalation or by ingestion. For internal dose assessment it is usually assumed that urine samples for tritium analysis are obtained after the tritium concentration inside the body has reached equilibrium following intake. Comparison was carried out for two types of vials, two efficiency calculation methods and two available liquid scintillation devices to highlight the errors of the measurements. The results were used for dose estimation with MONDAL-3 software. It has been shown that concerning the accuracy of the final internal dose assessment, the uncertainties of the assumptions used in the dose assessment (for example the date and route of intake, the physical and chemical form) can be more influential than the errors of the measured data. Therefore, the improvement of the experimental accuracy alone is not the proper way to improve the accuracy of the internal dose estimation.
A. Pántya; Á. Dálnoki; A.R. Imre; P. Zagyvai; T. Pázmándi. Tritium internal dose estimation from measurements with liquid scintillators. Applied Radiation and Isotopes 2018, 137, 18 -22.
AMA StyleA. Pántya, Á. Dálnoki, A.R. Imre, P. Zagyvai, T. Pázmándi. Tritium internal dose estimation from measurements with liquid scintillators. Applied Radiation and Isotopes. 2018; 137 ():18-22.
Chicago/Turabian StyleA. Pántya; Á. Dálnoki; A.R. Imre; P. Zagyvai; T. Pázmándi. 2018. "Tritium internal dose estimation from measurements with liquid scintillators." Applied Radiation and Isotopes 137, no. : 18-22.
Unlike with gases, for liquids and solids the pressure of a system can be not only positive, but also negative, or even zero. Upon isobaric heat exchange (heating or cooling) at p = 0, the volume work (p-V) should be zero, assuming the general validity of traditional δW = dWp = −pdV equality. This means that at zero pressure, a special process can be realized; a macroscopic change of volume achieved by isobaric heating/cooling without any work done by the system on its surroundings or by the surroundings on the system. A neologism is proposed for these dWp = 0 (and in general, also for non-trivial δW = 0 and W = 0) processes: “aergiatic” (from Greek: Ἀεργία, “inactivity”). In this way, two phenomenologically similar processes—adiabatic without any heat exchange, and aergiatic without any work—would have matching, but well-distinguishable terms.
Attila R. Imre; Krzysztof W. Wojciechowski; Gábor Györke; Axel Groniewsky; Jakub. W. Narojczyk. Pressure-Volume Work for Metastable Liquid and Solid at Zero Pressure. Entropy 2018, 20, 338 .
AMA StyleAttila R. Imre, Krzysztof W. Wojciechowski, Gábor Györke, Axel Groniewsky, Jakub. W. Narojczyk. Pressure-Volume Work for Metastable Liquid and Solid at Zero Pressure. Entropy. 2018; 20 (5):338.
Chicago/Turabian StyleAttila R. Imre; Krzysztof W. Wojciechowski; Gábor Györke; Axel Groniewsky; Jakub. W. Narojczyk. 2018. "Pressure-Volume Work for Metastable Liquid and Solid at Zero Pressure." Entropy 20, no. 5: 338.
The shape of the working fluid’s temperature-entropy saturation boundary has a strong influence, not only on the process parameters and efficiency of the Organic Rankine Cycle, but also on the design (the layout) of the equipment. In this paper, working fluids are modelled by the Redlich-Kwong equation of state. It is demonstrated that a limiting isochoric heat capacity might exist between dry and wet fluids. With the Redlich-Kwong equation of state, this limit can be predicted with good accuracy for several fluids, including alkanes.
Axel Groniewsky; Attila R. Imre. Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State. Entropy 2018, 20, 93 .
AMA StyleAxel Groniewsky, Attila R. Imre. Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State. Entropy. 2018; 20 (2):93.
Chicago/Turabian StyleAxel Groniewsky; Attila R. Imre. 2018. "Prediction of the ORC Working Fluid’s Temperature-Entropy Saturation Boundary Using Redlich-Kwong Equation of State." Entropy 20, no. 2: 93.
Power generation from low-temperature heat sources (80–300 °C) like thermal solar, geothermal, biomass or waste heat has been becoming more and more significant in the last few decades. Organic Rankine Cycle (ORC) uses organic working fluids, obtaining higher thermal efficiency than with water used in traditional Rankine Cycles, because of the physical (thermodynamic) properties of these fluids. The traditional classification of pure (one-component) working fluids is based on the quality of the expanded vapour after an isentropic (adiabatic and reversible) expansion from saturated vapour state, and distinguishes merely three categories: wet, dry and isentropic working fluids. The purpose of this paper is to show the deficiencies of this traditional classification and to introduce novel categorisation mostly to help in finding the thermodynamically optimal working fluid for a given heat source.
Gábor Györke; Ulrich Deiters; Axel Groniewsky; Imre Lassu; Attila R. Imre. Novel classification of pure working fluids for Organic Rankine Cycle. Energy 2017, 145, 288 -300.
AMA StyleGábor Györke, Ulrich Deiters, Axel Groniewsky, Imre Lassu, Attila R. Imre. Novel classification of pure working fluids for Organic Rankine Cycle. Energy. 2017; 145 ():288-300.
Chicago/Turabian StyleGábor Györke; Ulrich Deiters; Axel Groniewsky; Imre Lassu; Attila R. Imre. 2017. "Novel classification of pure working fluids for Organic Rankine Cycle." Energy 145, no. : 288-300.
Axel Groniewsky; Gábor Györke; Attila R. Imre. Description of wet-to-dry transition in model ORC working fluids. Applied Thermal Engineering 2017, 125, 963 -971.
AMA StyleAxel Groniewsky, Gábor Györke, Attila R. Imre. Description of wet-to-dry transition in model ORC working fluids. Applied Thermal Engineering. 2017; 125 ():963-971.
Chicago/Turabian StyleAxel Groniewsky; Gábor Györke; Attila R. Imre. 2017. "Description of wet-to-dry transition in model ORC working fluids." Applied Thermal Engineering 125, no. : 963-971.
High pressure methane is one of the most important novel fuel (CNG - Compressed Natural Gas, almost pure methane stored on 20-25 MPa). Additionally - just like other low alkanes - it might be used as working fluid for various thermodynamic cycles. On ambient temperature, methane is already in supercritical states under these pressures. For supercritical fluids, there are several anomalous properties; some of them have to be accounted during the proper handling of these substances. The aim of our study - besides the description of the anomalies - is to establish whether any of these anomalies can cause problems in the utilization of the CNG or during any other application.
Adrienn Katona; Attila R. Imre. Supercritical fluids in energy storage and consumption. 2017 6th International Youth Conference on Energy (IYCE) 2017, 1 -5.
AMA StyleAdrienn Katona, Attila R. Imre. Supercritical fluids in energy storage and consumption. 2017 6th International Youth Conference on Energy (IYCE). 2017; ():1-5.
Chicago/Turabian StyleAdrienn Katona; Attila R. Imre. 2017. "Supercritical fluids in energy storage and consumption." 2017 6th International Youth Conference on Energy (IYCE) , no. : 1-5.
Marcello Sega; Balázs Fábián; Attila R. Imre; Pál Jedlovszky. Relation between the Liquid Spinodal Pressure and the Lateral Pressure Profile at the Liquid–Vapor Interface. The Journal of Physical Chemistry C 2017, 121, 12214 -12219.
AMA StyleMarcello Sega, Balázs Fábián, Attila R. Imre, Pál Jedlovszky. Relation between the Liquid Spinodal Pressure and the Lateral Pressure Profile at the Liquid–Vapor Interface. The Journal of Physical Chemistry C. 2017; 121 (22):12214-12219.
Chicago/Turabian StyleMarcello Sega; Balázs Fábián; Attila R. Imre; Pál Jedlovszky. 2017. "Relation between the Liquid Spinodal Pressure and the Lateral Pressure Profile at the Liquid–Vapor Interface." The Journal of Physical Chemistry C 121, no. 22: 12214-12219.
Attila R. Imre; Axel Groniewsky; Gábor Györke. DESCRIPTION OF THE METASTABLE LIQUID REGION WITH QUINTIC AND QUASI-QUINTIC EQUATION OF STATES. Interfacial Phenomena and Heat Transfer 2017, 5, 173 -185.
AMA StyleAttila R. Imre, Axel Groniewsky, Gábor Györke. DESCRIPTION OF THE METASTABLE LIQUID REGION WITH QUINTIC AND QUASI-QUINTIC EQUATION OF STATES. Interfacial Phenomena and Heat Transfer. 2017; 5 (3):173-185.
Chicago/Turabian StyleAttila R. Imre; Axel Groniewsky; Gábor Györke. 2017. "DESCRIPTION OF THE METASTABLE LIQUID REGION WITH QUINTIC AND QUASI-QUINTIC EQUATION OF STATES." Interfacial Phenomena and Heat Transfer 5, no. 3: 173-185.
Attila R. Imre; Josef Novotný. Fractals and the Korcak-law: a history and a correction. The European Physical Journal H 2016, 41, 69 -91.
AMA StyleAttila R. Imre, Josef Novotný. Fractals and the Korcak-law: a history and a correction. The European Physical Journal H. 2016; 41 (1):69-91.
Chicago/Turabian StyleAttila R. Imre; Josef Novotný. 2016. "Fractals and the Korcak-law: a history and a correction." The European Physical Journal H 41, no. 1: 69-91.
There are several cases when tortuous continuous lines have to be discretized in order to measure length and other related quantities. In this methodological paper, we are going to demonstrate the importance of the proper sequencing (ranking) of the discrete points and call attention to some typical errors caused by improper sequencing. For demonstration, the fractal dimensions of an animal track with well-known original sequencing and for some mixed sequencing are estimated and the extent of errors is shown.
Attila R. Imre; Owen R. Bidder. THE IMPORTANCE OF PROPER SEQUENCING IN ESTIMATING THE LENGTH AND FRACTAL DIMENSION OF TORTUOUS CURVES. Fractals 2015, 23, 1550041 .
AMA StyleAttila R. Imre, Owen R. Bidder. THE IMPORTANCE OF PROPER SEQUENCING IN ESTIMATING THE LENGTH AND FRACTAL DIMENSION OF TORTUOUS CURVES. Fractals. 2015; 23 (4):1550041.
Chicago/Turabian StyleAttila R. Imre; Owen R. Bidder. 2015. "THE IMPORTANCE OF PROPER SEQUENCING IN ESTIMATING THE LENGTH AND FRACTAL DIMENSION OF TORTUOUS CURVES." Fractals 23, no. 4: 1550041.