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11. Photocatalytic CO2 Reduction

Author

Sápi, András, Thangavel, Rajkumar, Yadav, Mohit, Kiss, János, Kukovecz, Ákos, Kónya, Zoltán, He, Liang-Nian, Series Editor, Tundo, Pietro, Series Editor, Zhang, Z. Conrad, Series Editor, Garg, Seema, editor, and Chandra, Amrish, editor

Published
2022
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20. Behavior of $\mathbf{\Sigma 3}$ grain boundaries in \CISe\ and \CGSe\ photovoltaic absorbers as revealed by first-principles hybrid functional calculations

Author

Mirhosseini, Hossein, Kiss, Janos, and Felser, Claudia

Subjects
Condensed Matter - Materials Science
Abstract

The inconclusive results of the previous first-principles studies on the \S3 \ grain boundaries (GBs) in \CISe\ reveal the importance of employing a method that can correctly describe the electronic structure of this solar-cell material. We have employed hybrid functional calculations to study the \S3 (112) and \S3 (114) GBs in \CISe\ and \CGSe. The electronic structure changes introduced by the formation of GBs are threefold: creation of gap states, shift in band edges, and alteration of bandgap sizes. Gap states commonly behave as recombination centers, but the band alignment and the change in the bandgap size induced by GBs mitigate the destructive effect of these states in \CISe. That means, \S3 \ GBs are not detrimental for the carrier transport in devices based on \CISe. Conversely, these GBs are destructive for the carrier transport in \CGSe. The different behaviors of the \S3 \ GBs in CISe and CGSe might be considered by experimentalists to optimize the device fabrication to achieve high-performance solar cells.

Published
2015

21. Quantitative Comparison of Color-Coded Parametric Imaging Technologies Based on Digital Subtraction and Digital Variance Angiography: A Retrospective Observational Study.

Author

Góg, István, Sótonyi, Péter, Nemes, Balázs, Kiss, János P., Szigeti, Krisztián, Osváth, Szabolcs, and Gyánó, Marcell

Subjects
DIGITAL subtraction angiography, PERIPHERAL vascular diseases, DIAGNOSTIC imaging, ANGIOGRAPHY, HEMODYNAMICS
Abstract

The evaluation of hemodynamic conditions in critical limb-threatening ischemia (CLTI) patients is inevitable in endovascular interventions. In this study, the performance of color-coded digital subtraction angiography (ccDSA) and the recently developed color-coded digital variance angiography (ccDVA) was compared in the assessment of key time parameters in lower extremity interventions. The observational study included 19 CLTI patients who underwent peripheral vascular intervention at our institution in 2020. Pre- and post-dilatational images were retrospectively processed and analyzed by a commercially available ccDSA software (Kinepict Medical Imaging Tool 6.0.3; Kinepict Health Ltd., Budapest, Hungary) and by the recently developed ccDVA technology. Two protocols were applied using both a 4 and 7.5 frames per second acquisition rate. Time-to-peak (TTP) parameters were determined in four pre- and poststenotic regions of interest (ROI), and ccDVA values were compared to ccDSA read-outs. The ccDVA technology provided practically the same TTP values as ccDSA (r = 0.99, R2 = 0.98, p < 0.0001). The correlation was extremely high independently of the applied protocol or the position of ROI; the r value was 0.99 (R2 = 0.98, p < 0.0001) in all groups. A similar correlation was observed in the change in passage time (r = 0.98, R2 = 0.96, p < 0.0001). The color-coded DVA technology can reproduce the same hemodynamic data as a commercially available DSA-based software; therefore, it has the potential to be an alternative decision-supporting tool in catheter labs. [ABSTRACT FROM AUTHOR]

Published
2024
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25. Optimized Pt–Co Alloy Nanoparticles for Reverse Water–Gas Shift Activation of CO2

Author

Szamosvölgyi, Ákos, primary, Pitó, Ádám, additional, Efremova, Anastasiia, additional, Baán, Kornélia, additional, Kutus, Bence, additional, Suresh, Mutyala, additional, Sápi, András, additional, Szenti, Imre, additional, Kiss, János, additional, Kolonits, Tamás, additional, Fogarassy, Zsolt, additional, Pécz, Béla, additional, Kukovecz, Ákos, additional, and Kónya, Zoltán, additional

Published
2024
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27. Titelbild: Pt/MnO Interface Induced Defects for High Reverse Water Gas Shift Activity (Angew. Chem. 8/2024)

Author

Szenti, Imre, primary, Efremova, Anastasiia, additional, Kiss, János, additional, Sápi, András, additional, Óvári, László, additional, Halasi, Gyula, additional, Haselmann, Ulrich, additional, Zhang, Zaoli, additional, Morales‐Vidal, Jordi, additional, Baán, Kornélia, additional, Kukovecz, Ákos, additional, López, Núria, additional, and Kónya, Zoltán, additional

Published
2024
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28. Cover Picture: Pt/MnO Interface Induced Defects for High Reverse Water Gas Shift Activity (Angew. Chem. Int. Ed. 8/2024)

Author

Szenti, Imre, primary, Efremova, Anastasiia, additional, Kiss, János, additional, Sápi, András, additional, Óvári, László, additional, Halasi, Gyula, additional, Haselmann, Ulrich, additional, Zhang, Zaoli, additional, Morales‐Vidal, Jordi, additional, Baán, Kornélia, additional, Kukovecz, Ákos, additional, López, Núria, additional, and Kónya, Zoltán, additional

Published
2024
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30. Photocatalytic CO2 Reduction

Author

Sápi, András, primary, Thangavel, Rajkumar, additional, Yadav, Mohit, additional, Kiss, János, additional, Kukovecz, Ákos, additional, and Kónya, Zoltán, additional

Published
2021
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31. Chemical disorder as engineering tool for spin-polarizationin Mn3Ga-based Heusler systems

Author

Chadov, Stanislav, D'Souza, Sunil Wilfred, Wollmann, Lukas, Kiss, Janos, Fecher, Gerhard H., and Felser, Claudia

Subjects
Condensed Matter - Materials Science
Abstract

Our study highlights spin-polarization mechanisms in metals, by focusing on the mobilities of conducting electrons with different spins instead of their quantities. Here, we engineer electron mobility by applying chemical disorder induced by non-stoichiometric variations. As a practical example, we discuss the scheme that establishes such variations in tetragonal Mn3Ga Heusler material. We justify this approach using first-principles calculations of the spin-projected conductivity components based on the Kubo-Greenwood formalism. It follows that, in majority of the cases, even a small substitution of some other transition element instead of Mn may lead to a substantial increase in spin-polarization along the tetragonal axis.

Published
2014
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34. Disorder-induced cubic phase in Fe$_2$-based Heusler alloys

Author

Kiss, Janos, Chadov, Stanislav, Fecher, Gerhard H., and Felser, Claudia

Subjects
Condensed Matter - Materials Science
Abstract

Based on first-principles electronic structure calculations, we analyze the chemical and magnetic mechanisms stabilizing the cubic phase in Fe$_2$-based Heusler materials, which were previously predicted to be tetragonal when being chemically ordered. In agreement with recent experimental data, we found that these compounds crystallize within the so-called "inverted" cubic Heusler structure perturbed by a certain portion of the intrinsic chemical disorder. Understanding these mechanisms is a necessary step to guide towards the successful future synthesis of the stable Fe$_2$-based tetragonal phases, which are very promising candidates for the fabrication of rare-earth-free permanent magnets.

Published
2013
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37. Topological phase transitions in bulk

Author

Chadov, Stanislav, Kiss, Janos, Kübler, Jürgen, and Felser, Claudia

Subjects
Condensed Matter - Materials Science
Abstract

We consider the analogy between the topological phase transition which occurs as a function of spatial coordinate on a surface of a non-trivial insulator, and the one which occurs in the bulk due to the change of internal parameters (such as crystal field and spin-orbit coupling). In both cases the system exhibits a Dirac cone, which is the universal manifestation of topological phase transition, independently on the type of driving parameters. In particular, this leads to a simple way of determining the topological class based solely on the bulk information even for the systems with translational symmetry broken by atomic disorder or by strong electron correlations. Here we demonstrate this on example of the zinc-blende related semiconductors by means of the {\it ab-initio} fully-relativistic band structure calculations involving the coherent potential approximation (CPA) technique., Comment: Phys. Status Solidi RRL, DOI 10.1002/pssr.2012064xx (2012), submitted

Published
2012
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38. Topological phase transition induced by random substitution

Author

Chadov, Stanislav, Kiss, Janos, Felser, Claudia, Chadova, Kristina, Ködderitzsch, Diemo, Minár, Jan, and Ebert, Hubert

Subjects
Condensed Matter - Materials Science
Abstract

The transition from topologically nontrivial to a trivial state is studied by first-principles calculations on bulk zinc-blende type (Hg$_{1-x}$Zn$_x$)(Te$_{1-x}$S$_x$) disordered alloy series. The random chemical disorder was treated by means of the Coherent Potential Approximation. We found that although the phase transition occurs at the strongest disorder regime (${x\approx 0.5}$), it is still manifested by well-defined Bloch states forming a clear Dirac cone at the Fermi energy of the bulk disordered material. The computed residual resistivity tensor confirm the topologically-nontrivial state of the HgTe-rich (${x<0.5}$), and the trivial state of the ZnS-rich alloy series (${x>0.5}$) by exhibiting the quantized behavior of the off-diagonal spin-projected component, independently on the concentration $x$.

Published
2012

39. Optimized Pt–Co Alloy Nanoparticles for Reverse Water–Gas Shift Activation of CO2.

Author

Szamosvölgyi, Ákos, Pitó, Ádám, Efremova, Anastasiia, Baán, Kornélia, Kutus, Bence, Suresh, Mutyala, Sápi, András, Szenti, Imre, Kiss, János, Kolonits, Tamás, Fogarassy, Zsolt, Pécz, Béla, Kukovecz, Ákos, and Kónya, Zoltán

Abstract

Different Co contents were used to tune bimetallic Pt–Co nanoparticles with a diameter of 8 nm, resulting in Pt:Co ratios of 3.54, 1.51, and 0.96. These nanoparticles were then applied to the MCF-17 mesoporous silica support. The synthesized materials were characterized with HR-TEM, HAADF-TEM, EDX, XRD, BET, ICP-MS, in situ DRIFTS, and quasi in situ XPS techniques. The catalysts were tested in a thermally induced reverse water–gas shift reaction (CO2:H2 = 1:4) at atmospheric pressure in the 200–700 °C temperature range. All bimetallic Pt–Co particles outperformed the pure Pt benchmark catalyst. The nanoparticles with a Pt:Co ratio of 1.51 exhibited 2.6 times higher activity and increased CO selectivity by 4% at 500 °C. Experiments proved that the electron accumulation and alloying effect on the Pt–Co particles are stronger with higher Co ratios. The production of CO followed the formate reaction pathway on all catalysts due to the face-centered-cubic structure, which is similar to the Pt benchmark. It is concluded that the enhanced properties of Co culminate at a Pt:Co ratio of 1.51 because decreasing the ratio to 0.96 results in lower activity despite having more Co atoms available for the electronic interaction, resulting in the lack of electron-rich Pt sites. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Pt/MnO Interface Induced Defects for High Reverse Water Gas Shift Activity

Author

Szenti, Imre, primary, Efremova, Anastasiia, additional, Kiss, János, additional, Sápi, András, additional, Óvári, László, additional, Halasi, Gyula, additional, Haselmann, Ulrich, additional, Zhang, Zhaoli, additional, Morales-Vidal, Jordi, additional, Baán, Kornélia, additional, Kukovecz, Ákos, additional, López, Núria, additional, and Kónya, Zoltán, additional

Published
2023
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41. Supplementary Figure S2 from Zoledronic Acid Add-on Therapy for Standard-Risk Ewing Sarcoma Patients in the Ewing 2008R1 Trial

Author

Koch, Raphael, primary, Haveman, Lianne, primary, Ladenstein, Ruth, primary, Brichard, Benedicte, primary, Jürgens, Heribert, primary, Cyprova, Sona, primary, van den Berg, Henk, primary, Hassenpflug, Wolf, primary, Raciborska, Anna, primary, Ek, Torben, primary, Baumhoer, Daniel, primary, Egerer, Gerlinde, primary, Kager, Leo, primary, Renard, Marleen, primary, Hauser, Peter, primary, Burdach, Stefan, primary, Bovee, Judith V.M.G., primary, Hong, Angela M., primary, Reichardt, Peter, primary, Kruseova, Jarmila, primary, Streitbürger, Arne, primary, Kühne, Thomas, primary, Kessler, Torsten, primary, Bernkopf, Marie, primary, Butterfaß-Bahloul, Trude, primary, Dhooge, Catharina, primary, Bauer, Sebastian, primary, Kiss, János, primary, Paulussen, Michael, primary, Bonar, Fiona, primary, Ranft, Andreas, primary, Timmermann, Beate, primary, Rascon, Jelena, primary, Vieth, Volker, primary, Kanerva, Jukka, primary, Faldum, Andreas, primary, Hartmann, Wolfgang, primary, Hjorth, Lars, primary, Bhadri, Vivek A., primary, Metzler, Markus, primary, Gelderblom, Hans, primary, and Dirksen, Uta, primary

Published
2023
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42. Supplementary Data S2 from Zoledronic Acid Add-on Therapy for Standard-Risk Ewing Sarcoma Patients in the Ewing 2008R1 Trial

Author

Koch, Raphael, primary, Haveman, Lianne, primary, Ladenstein, Ruth, primary, Brichard, Benedicte, primary, Jürgens, Heribert, primary, Cyprova, Sona, primary, van den Berg, Henk, primary, Hassenpflug, Wolf, primary, Raciborska, Anna, primary, Ek, Torben, primary, Baumhoer, Daniel, primary, Egerer, Gerlinde, primary, Kager, Leo, primary, Renard, Marleen, primary, Hauser, Peter, primary, Burdach, Stefan, primary, Bovee, Judith V.M.G., primary, Hong, Angela M., primary, Reichardt, Peter, primary, Kruseova, Jarmila, primary, Streitbürger, Arne, primary, Kühne, Thomas, primary, Kessler, Torsten, primary, Bernkopf, Marie, primary, Butterfaß-Bahloul, Trude, primary, Dhooge, Catharina, primary, Bauer, Sebastian, primary, Kiss, János, primary, Paulussen, Michael, primary, Bonar, Fiona, primary, Ranft, Andreas, primary, Timmermann, Beate, primary, Rascon, Jelena, primary, Vieth, Volker, primary, Kanerva, Jukka, primary, Faldum, Andreas, primary, Hartmann, Wolfgang, primary, Hjorth, Lars, primary, Bhadri, Vivek A., primary, Metzler, Markus, primary, Gelderblom, Hans, primary, and Dirksen, Uta, primary

Published
2023
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43. Supplementary Table S5 from Zoledronic Acid Add-on Therapy for Standard-Risk Ewing Sarcoma Patients in the Ewing 2008R1 Trial

Author

Koch, Raphael, primary, Haveman, Lianne, primary, Ladenstein, Ruth, primary, Brichard, Benedicte, primary, Jürgens, Heribert, primary, Cyprova, Sona, primary, van den Berg, Henk, primary, Hassenpflug, Wolf, primary, Raciborska, Anna, primary, Ek, Torben, primary, Baumhoer, Daniel, primary, Egerer, Gerlinde, primary, Kager, Leo, primary, Renard, Marleen, primary, Hauser, Peter, primary, Burdach, Stefan, primary, Bovee, Judith V.M.G., primary, Hong, Angela M., primary, Reichardt, Peter, primary, Kruseova, Jarmila, primary, Streitbürger, Arne, primary, Kühne, Thomas, primary, Kessler, Torsten, primary, Bernkopf, Marie, primary, Butterfaß-Bahloul, Trude, primary, Dhooge, Catharina, primary, Bauer, Sebastian, primary, Kiss, János, primary, Paulussen, Michael, primary, Bonar, Fiona, primary, Ranft, Andreas, primary, Timmermann, Beate, primary, Rascon, Jelena, primary, Vieth, Volker, primary, Kanerva, Jukka, primary, Faldum, Andreas, primary, Hartmann, Wolfgang, primary, Hjorth, Lars, primary, Bhadri, Vivek A., primary, Metzler, Markus, primary, Gelderblom, Hans, primary, and Dirksen, Uta, primary

Published
2023
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44. Study Protocol S1 from Zoledronic Acid Add-on Therapy for Standard-Risk Ewing Sarcoma Patients in the Ewing 2008R1 Trial

Author

Koch, Raphael, primary, Haveman, Lianne, primary, Ladenstein, Ruth, primary, Brichard, Benedicte, primary, Jürgens, Heribert, primary, Cyprova, Sona, primary, van den Berg, Henk, primary, Hassenpflug, Wolf, primary, Raciborska, Anna, primary, Ek, Torben, primary, Baumhoer, Daniel, primary, Egerer, Gerlinde, primary, Kager, Leo, primary, Renard, Marleen, primary, Hauser, Peter, primary, Burdach, Stefan, primary, Bovee, Judith V.M.G., primary, Hong, Angela M., primary, Reichardt, Peter, primary, Kruseova, Jarmila, primary, Streitbürger, Arne, primary, Kühne, Thomas, primary, Kessler, Torsten, primary, Bernkopf, Marie, primary, Butterfaß-Bahloul, Trude, primary, Dhooge, Catharina, primary, Bauer, Sebastian, primary, Kiss, János, primary, Paulussen, Michael, primary, Bonar, Fiona, primary, Ranft, Andreas, primary, Timmermann, Beate, primary, Rascon, Jelena, primary, Vieth, Volker, primary, Kanerva, Jukka, primary, Faldum, Andreas, primary, Hartmann, Wolfgang, primary, Hjorth, Lars, primary, Bhadri, Vivek A., primary, Metzler, Markus, primary, Gelderblom, Hans, primary, and Dirksen, Uta, primary

Published
2023
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45. Agrobacterium Is a Proposed Suitable System for Bioassays and Resistance Studies on Antimicrobial Peptides with Plant Protection Potential

Author

Furgani, Ghazala M., primary, Makrai, László, additional, Vozik, Dávid, additional, Kiss, János, additional, Olasz, Ferenc, additional, Klein, Michael Gardner, additional, Ghaffar, Muhamad-Akbar Bin-Abdul, additional, Szabados, László, additional, Noureldeen, Ahmed, additional, Bélafi-Bakó, Katalin, additional, Fodor, László, additional, Forst, Steven A., additional, and Fodor, András, additional

Published
2023
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47. Zoledronic acid add-on therapy for standard-risk Ewing sarcoma patients in the Ewing 2008R1 trial

Author

Koch, Raphael, primary, Haveman, Lianne, additional, Ladenstein, Ruth, additional, BRICHARD, Bénédicte, additional, Juergens, Heribert, additional, Cyprová, Soňa, additional, van den Berg, Henk, additional, Hassenpflug, Wolf, additional, Raciborska, Anna, additional, Ek, Torben, additional, Baumhoer, Daniel, additional, Egerer, Gerlinde, additional, Kager, Leo, additional, Renard, Marleen, additional, Hauser, Peter, additional, Burdach, Stefan, additional, Bovee, Judith V.M.G., additional, Hong, Angela M., additional, Reichardt, Peter, additional, Kruseova, Jarmila, additional, Streitbürger, Arne, additional, Kühne, Thomas, additional, Kessler, Torsten, additional, Bernkopf, Marie, additional, Butterfaß-Bahloul, Trude, additional, Dhooge, Catharina, additional, Bauer, Sebastian, additional, Kiss, János, additional, Paulussen, Michael, additional, Bonar, Fiona, additional, Ranft, Andreas, additional, Timmermann, Beate, additional, Rascon, Jelena, additional, Vieth, Volker, additional, Kanerva, Jukka, additional, Faldum, Andreas, additional, Hartmann, Wolfgang, additional, Hjorth, Lars, additional, Bhadri, Vivek A., additional, Metzler, Markus, additional, Gelderblom, Hans, additional, and Dirksen, Uta, additional

Published
2023
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48. Antimicrobial Peptides (AMP) in the Cell-Free Culture Media of Xenorhabdus budapestensis and X. szentirmaii Exert Anti-Protist Activity against Eukaryotic Vertebrate Pathogens including Histomonas meleagridis and Leishmania donovani Species

Author

Fodor, András, primary, Hess, Claudia, additional, Ganas, Petra, additional, Boros, Zsófia, additional, Kiss, János, additional, Makrai, László, additional, Dublecz, Károly, additional, Pál, László, additional, Fodor, László, additional, Sebestyén, Anna, additional, Klein, Michael G., additional, Tarasco, Eustachio, additional, Kulkarni, Manjusha M., additional, McGwire, Bradford S., additional, Vellai, Tibor, additional, and Hess, Michael, additional

Published
2023
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50. Antimicrobial Peptides for Combating Eukaryotic Pathogens: Anti-Histomonal, and Anti-Leishmanial Potential of Antimicrobial Peptides Released by Entomopathogenic Nematode Symbiont Bacteria

Author

Fodor, András, primary, Hess, Claudia, additional, Ganas, Petra, additional, Boros, Zsófia, additional, Kiss, János, additional, Makrai, László, additional, Dublecz, Károly, additional, Pál, László, additional, Fodor, László, additional, Sebestyén, Anna, additional, Klein, Michael G., additional, Tarasco, Eustachio, additional, Kulkarni, Manjusha M., additional, McGwire, Bradford S., additional, Vellai, Tibor, additional, and Hess, Michael, additional

Published
2023
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