TY - JOUR A1 - Huber, Albert T1 - The gravitational field of a massless particle on the horizon of a stationary black hole JF - Classical and Quantum Gravity N2 - In this work, the field of a gravitational shockwave generated by a massless point-like particle is calculated at the event horizon of a stationary Kerr–Newman black hole. Using the geometric framework of generalized Kerr–Schild deformations in combination with the spin-coefficient formalism of Newman and Penrose, it is shown that the field equations of the theory, at the event horizon of the black hole, can be reduced to a single linear ordinary differential equation for the so-called profile function of the geometry. This differential relation is solved exactly. Based on the results obtained, a physical interpretation is given for the found shockwave spacetime, and it is clarified how these results lead back to those of previous works on the subject, which deal with the much simpler cases of gravitational shockwaves in static black hole backgrounds. KW - Gravitation Y1 - ER - TY - JOUR A1 - Hoffmann, Michael E. A1 - Kuba, Markus T1 - Logarithmic integrals, zeta values, and tiered binomial coeffcients JF - Monatshefte fuer Mathematik KW - Integrals KW - Binomial KW - Coefficient Y1 - ER - TY - JOUR A1 - Belkacem, Kévin A1 - Kupka, Friedrich A1 - Philidet, Jordan A1 - Samadi, Réza T1 - Surface effects and turbulent pressure. Assessing the Gas-Γ1 and Reduced-Γ1 empirical models. JF - Astronomy & Astrophysics KW - Surface KW - Pressure Y1 - ER - TY - JOUR A1 - Rauer, Johannes Nikolaus A1 - Kroiss, Michael A1 - Kryvinska, Natalia A1 - Engelhardt-Nowitzki, Corinna A1 - Aburaia, Mohamed T1 - Cross-university virtual teamwork as a means of internationalization at home JF - The International Journal of Management Education, Volume 19, Issue 3 KW - Virtual Teamwork Y1 - IS - Issue 3 ER - TY - JOUR A1 - Sinelnikova, Anna A1 - Mandl, Thomas A1 - Agelii, Harald A1 - Grånäs, Oscar A1 - Marklund, Erik G. A1 - Caleman, Carl A1 - De Santis, Emiliano T1 - Protein orientation in time-dependent electric fields: orientation before destruction JF - Biophysical Journal KW - Protein KW - Electric Fields Y1 - IS - Volume 120, Issue 17 SP - 3709 EP - 3717 ER - TY - JOUR A1 - Munsch, Nicolas A1 - Martin, Alistair A1 - Gruarin, Stefanie A1 - Nateqi, Jama A1 - Abdarahmane, Isselmou A1 - Weingartner-Ortner, Rafael A1 - Knapp, Bernhard T1 - Authors’ Reply to: Screening Tools: Their Intended Audiences and Purposes. Comment on “Diagnostic Accuracy of Web-Based COVID-19 Symptom Checkers: Comparison Study” JF - Journal of Medical Internet Research KW - COVID-19 KW - Symptom Checkers KW - Digital Health Y1 - IS - Vol 23, No 5 (2021) ER - TY - JOUR A1 - Kuba, Markus A1 - Varvak, Anna T1 - On Path diagrams and Stirling permutations JF - Séminaire Lotharingien de Combinatoire N2 - A permutation can be locally classified according to the four local types: peaks, valleys, double rises and double falls. The corresponding classification of binary increasing trees uses four different types of nodes. Flajolet demonstrated the continued fraction representation of the generating function of local types, using a classical bijection between permutations, binary increasing trees, and suitably defined path diagrams induced by Motzkin paths. The aim of this article is to extend the notion of local types from permutations to k-Stirling permutations (also known as k-multipermutations). We establish a bijection of these local types to node types of (k+1)-ary increasing trees. We present a branched continued fraction representation of the generating function of these local types through a bijection with path diagrams induced by Łukasiewicz paths, generalizing the results from permutations to arbitrary k-Stirling permutations. We further show that the generating function of ordinary Stirling permutation has at least three branched continued fraction representations, using correspondences between non-standard increasing trees, k-Stirling permutations and path diagrams. KW - Kettenbruch KW - Formale Potenzreihe KW - Continued fractions KW - Łukasiewicz paths KW - Path diagrams KW - Stirling permutations KW - Multipermutations KW - Increasing trees Y1 - 2021 IS - B82c (2021) ER - TY - JOUR A1 - Wala, Thomas T1 - Fitness im Büro mit Active Workplace Design JF - Wirtschaft und Management : Schriftenreihe zur wirtschaftswissenschaftlichen Forschung und Praxis N2 - Wissensarbeiter:innen verbringen den überwiegenden Teil ihrer Arbeitszeit sitzend vor dem Computer. Die negativen Folgen von langem Sitzen für die Gesundheit sind bekannt: Zu langes Sitzen bedingt einen niedrigen Kalorienverbrauch, der Stoffwechsel und das Herz-Kreislaufsystem laufen auf Sparflamme. Entsprechend steigt das Risiko für Übergewicht, Diabetes, Bandscheibenvorfall und Herz-Kreislauf- Erkrankungen. Unter den Folgen von langem Sitzen leiden aber nicht nur die betroffenen Mitarbeiter:innen selbst, sondern auch deren Arbeitgeber:innen, weil Mitarbeiter:innen mit einem auf Bewegungsmangel zurückzuführenden reduzierten physischen und psychischen Wohlbefinden weniger produktiv und kreativ arbeiten bzw. aufgrund von Erkrankungen erst gar nicht arbeiten können. Der vorliegende Beitrag zeigt auf, wie Unternehmen durch das Setzen sanfter Bewegungszwänge, den Einsatz dynamischer Arbeitsstationen sowie die Integration niederschwelliger Fitnessmodule in die Bürolandschaft für mehr körperliche Aktivität im Arbeitsalltag sorgen können. KW - Arbeitsplatz KW - Gesundheitsverhalten KW - Fitness Y1 - IS - 31 SP - 47 EP - 58 ER - TY - JOUR A1 - Huber, Albert T1 - Hidden Killing fields, geometric symmetries and black hole mergers JF - Annals of Physics N2 - In the present work, using the recently introduced framework of local geometric deformations, special types of vector fields – so-called hidden Killing vector fields – are constructed, which solve the Killing equation not globally, but only locally, i.e. in local subregions of spacetime. Taking advantage of the fact that the vector fields coincide locally with Killing fields and therefore allow the consideration of integral laws that convert into exact physical conservation laws on local scales, balance laws in dynamical systems without global Killing symmetries are derived that mimic as closely as possible the conservation laws for energy and angular momentum of highly symmetric models. The utility of said balance laws is demonstrated by a concrete geometric example, namely a toy model for the binary merger of two extremal Reissner–Nordström black holes. KW - Hidden Killing KW - Vectors Phantom symmetries KW - Conservation laws Y1 - VL - 434 ER - TY - CHAP A1 - Lehner, Martin A1 - Sohm, Kurt T1 - Qualität, didaktische Methodik und Digitalität T2 - Wie Corona die Hochschullehre verändert: Erfahrungen und Gedanken aus der Krise zum zukünftigen Einsatz von eLearning KW - Hochschuldidaktik KW - Digitalität KW - Qualität Y1 - 2022 SP - 339 EP - 350 PB - Springer Gabler ER - TY - JOUR A1 - Knoll, Leonhard A1 - Tartler, Thomas A1 - Wala, Thomas T1 - Marktrisikoprämie in Österreich: ein halbes Jahrhundert kein klarer Sieger bei Aktie vs Anleihe JF - CFO Aktuell KW - Aktie KW - Marktrisikoprämie Y1 - IS - Jänner 2021 SP - 12 EP - 15 ER - TY - JOUR A1 - Wala, Thomas T1 - Die betriebswirtschaftliche Klausur: Kostenrechnung. JF - WISU KW - Betriebswirtschaftslehre KW - Kostenrechnung Y1 - IS - 6, 2021 SP - 681 EP - 684 ER - TY - CHAP A1 - Wala, Thomas A1 - Felleitner-Goll, Katharina T1 - Rahmenbedingungen der betrieblichen Innovationsarbeit T2 - Multidisziplinäre Perspektiven im Innovations-und Wissensmanagement T2 - Multidisciplinary Perspectives in Innovation and Knowledge Management KW - Betriebswirtschaftslehre KW - Innovationsarbeit Y1 - SP - 37 EP - 58 PB - Peter Lang CY - Berlin ER - TY - JOUR A1 - Wala, Thomas T1 - Kreative Raumkonzepte fördern die Innovationskraft JF - Wissensmanagement KW - Innovation KW - Raumkonzept Y1 - IS - 2, 2021 SP - 29 ER - TY - CHAP A1 - Salmen, Christine T1 - Erzählungen vom Umbruch in Rumänien 1989 T2 - Der Fall des Eisernen Vorhangs 1989 und die Folgen: europäische pädagogische Perspektiven KW - Eiserne Vorhang KW - Rumänien Y1 - PB - LIT Verlag ER - TY - CHAP A1 - Tabakovic, Momir A1 - Csapo, Csilla T1 - Industry – University cooperation in the renewable energy field in south Africa- Gap analysis and enhancement proposals T2 - UNITO conference, Webinar, Universities of Tomorrow: Global, Interdisciplinary, Digitized, Sustainable, HTWG Konstanz KW - Renewable Energies Y1 - ER - TY - CHAP A1 - Valckenborg, Roland A1 - Berger, Karl A. A1 - Újvári, Gusztáv A1 - Eder, Gabriele C. A1 - Gaisberger, Lukas A1 - Tabakovic, Momir A1 - Polo Lopez, Christina S. A1 - Boddaert, Simon A1 - del Buono, Matteo A1 - Martín Chivelet, Nuria A1 - Sanz Martinez, Asier A1 - Kim, Jun-Tae A1 - Gerd Imenes, Anne T1 - COMPARISON OF IEC 61853-1 MATRIX EVALUATIONS BASED ON INDOOR AND OUTDOOR MEASUREMENT DATA FROM PVPS TASK 15 BIPV ROUND-ROBIN T2 - 38th European Photovoltaic Solar Energy Conference Proceedings, September 6-10, 2021 KW - Measurement Y1 - ER - TY - CHAP A1 - Schwaiger, Simon A1 - Aburaia, Mohamed A1 - Aburaia, Ali A1 - Wöber, Wilfried T1 - Explainable Artificial Intelligence for Robot Arm Control T2 - Proceedings of the 32nd International DAAAM Virtual Symposium `Intelligent Manufacturing & Automation`, 28-29th October 2021, Vienna KW - Artificial Intelligence KW - Machine Learning Y1 - VL - 32 IS - 1 SP - 0640 EP - 0647 ER - TY - JOUR A1 - Lackner, Maximilian A1 - Lutz, Markus A1 - Hribernig, Thomas T1 - Neuartiges Verfahren zum Löschen von Metallbränden mit Zelluloseflakes JF - Feuerwehr Fachjournal KW - Extinguisher KW - Cellulose Y1 - IS - September 2021 SP - 54 ER - TY - BOOK A1 - Wala, Thomas A1 - Ellinger, Florian A1 - Franz, Peter A1 - Kriz, Agnes A1 - Zangl, Sabine A1 - Sohm, Kurt A1 - Tabakovic, Momir A1 - Gollner, Helmut A1 - Adams, Mark A1 - Litzenberger, Stefan T1 - Internationalisierung von Fachhochschulstudiengängen.: Ideen, Konzepte & Erfahrungsberichte KW - Internationalisation Y1 - SN - ISBN-13 : ‎979-8650872184 PB - Independently Published ER - TY - CHAP A1 - Abdank, Moritz A1 - Aburaia, Mohamed A1 - Wöber, Wilfried T1 - Using-Colour-Based Object Detection for Pick and Place Applications T2 - Proceedings of the 32nd International DAAAM Virtual Symposium 'Intelligent Manufacturing & Automation', 28-29th October 2021, Vienna KW - Computer Vision KW - Object Detection KW - ROS Y1 - VL - 32 IS - 1 SP - 0536 EP - 0541 ER - TY - CHAP A1 - Chirita, Cristian A1 - Tabakovic, Momir T1 - Optimization of a simulation for thermoelectric generators and their application in water boiler systems with combustion chamber T2 - X International Conference Industrial Engineering and Environmental Protection KW - Generators KW - Renewable Energy Y1 - SP - 143 EP - 151 ER - TY - RPRT A1 - Orsolits, Horst A1 - Korn, Alexander T1 - Augmented Reality basierte Robotik-Lehre N2 - Diese Arbeit beschreibt eine Augmented Reality (AR) Applikation für den Einsatz in der Hochschullehre zum Thema Industrierobotik. Ziel ist es, sowohl das Lehren als auch das Lernen grundlegender Robotik-Inhalte durch die Bereitstellung einer interaktiven Methode zur Vermittlung der Lehrinhalte für Studierende zu verbessern. Die Studierenden sind in der Lage, direkt mit dem virtuellen Modell eines Industrieroboters zu interagieren und so selbstgesteuert die Lerninhalte zu vertiefen. Diese interaktive Methode verbindet die Studierenden direkt mit den Lehrinhalten und fördert das selbsterforschende Lernen. Eine weitere Anwendungsmöglichkeit sieht die Kombination einer Lektorenversion der AR Experience mit der Studierendenversion vor. Der Lektor hat die Möglichkeit, das Modell in AR zu steuern bzw. zu verändern und die Studierenden können auf Ihren Mobilgeräten die Änderungen live in AR mitverfolgen, um so auch im Distance Learning eine Verbindung Lektor – Studierende – Inhalt zusätzlich zu Videokonferenz-Tools herzustellen. KW - Augmented Reality KW - Applikation KW - Robotik KW - Industrieroboter KW - Lehre Y1 - 2022 ER - TY - GEN A1 - Tabakovic, Momir A1 - Hemis, Herbert T1 - Energieversorgungslösungen auf Quartiersebene KW - Energy Systems Y1 - ER - TY - JOUR A1 - Wagner, Isabella A1 - Lackner, Maximilian T1 - Extraction and Analysis of Natural Rubber from the Latex of Ficus carica, Artocarpus heterophyllus and Polymer Analysis of Durio zibethinus JF - Austin Journal of Biotechnology & Bioengineering N2 - In tropical fruits such as durian (Durio zibethinus) and jackfruit (Artocarpus heterophyllus), only one quarter to one third of the fruit is edible. Finding more ways to industrially use the other components of the fruit can reduce the waste burned or dumped in landfills. Another fruit tree of interest that can also grow in Austria is the fig tree (Ficus carica). Currently, the fruits are the main product of that plant; however, components in the latex of the tree are of interest too. The latex is known to contain natural rubber, which could potentially be used for industrial applications. Jackfruit trees also produce latex, which contains natural rubber. In both cases, the natural rubber has different properties compared to the conventionally used rubber from the rubber tree (Hevea brasiliensis). This could provide new opportunities in various applications. Therefore, the purpose of this research is to analyze the properties of the natural rubber obtained from the jackfruit and fig trees. Additionally, durian fruit also produces a sticky liquid, so the same experiments were also carried out with durian samples. The experimental procedure included extraction with acetone and cyclohexane as well as polymer length determination with gel permeation chromatography and polymer analysis with differential scanning calorimetry. The results show that in both jackfruit and fig tree latex, there is natural rubber of similar polymer length. Durian pulp also contains a polymer; however, with these experiments, it could not be identified. Further research is required to identify the durian polymer and to confirm the results of this experiment. KW - Extraction KW - Rubber Y1 - IS - Vol. 8 (2) ER - TY - JOUR A1 - Petrov, Timothy A1 - Neussner, Wolfgang A1 - Lackner, Maximilian T1 - Digitalization of the Process Landscape for Proprietary Bond Trading JF - Sustainable Future and Technology Development N2 - On the surface, the process landscape for fixed income securities trading within most banks has changed only slightly in the past four decades. The value chain remains divided amongst front-, middle-, and back office, with IT in support. Front office negotiates deals with customers and other banks, middle office manages risks and reporting, and back office ensures that payments are made in exchange for a transfer of the bonds that have been traded. Though these processes have gradually migrated to electronic mediums, much of the work in all functional areas remains manual. But the advent of digital technologies, primarily process automation software and data integration in an open software architecture, allows banks to dramatically change how the processes along the value chain are carried out. Repetitive and predictable tasks can be performed by automated software, allowing humans to concentrate on complex activities that require flexibility and discretion. Those tasks that remain in the hands of humans can also be made more efficient by extracting data from software applications along the entire process chain and providing them to the human user at the right point in time in the right system. KW - Digitalization KW - Process Automation Y1 - IS - Vol 3, No 6, 2021 ER - TY - CHAP A1 - Klamert-Schmid, Judith A1 - Traxler, Sabine A1 - Lackner, Maximilian T1 - The Phenomenon Of 'Opportunity Recognition' Among Engineering Student T2 - 24th International Conference on Interactive Collaborative Learning(ICL2021), 22.-24.September 2021, Dresden KW - Engineering KW - Students Y1 - CY - Dresden ER - TY - CHAP A1 - Tabakovic, Momir A1 - Böckl, Benjamin A1 - Berger, Michael A. A1 - Hermis, Herbert A1 - Nauschegg, Daniel A1 - Wall, Johannes T1 - Energieversorgungslösungen auf Quartiersebene T2 - World Energy Council Austria Young Energy Professionals KW - Energy Systems Y1 - ER - TY - JOUR A1 - Klamert-Schmid, Judith A1 - Lackner, Maximilian T1 - Arbeiten und studieren im Homeoffice JF - Alle! Achtung! Das Sicherheitsmagazin der AUVA KW - Home Office Y1 - IS - 10/2021 ER - TY - JOUR A1 - Aaliya, Basheer A1 - Sunooj, Kappat Valiyapeediyekkal A1 - Sri Rajkumar, Chillapalli Babu A1 - Navaf, Muhammed A1 - Akhila, Plachikkattu Parambil A1 - Sudheesh, Cherakkathodi A1 - George, Johnsy A1 - Lackner, Maximilian T1 - Effect of Thermal Pretreatments on Phosphorylation of Corypha umbraculifera L. Stem Pith Starch: A Comparative Study Using Dry-Heat, Heat-Moisture and Autoclave Treatments JF - Polymers N2 - Talipot starch, a non-conventional starch source with a high yield (76%) from the stem pith of talipot palm (Corypha umbraculifera L.) was subjected to three different thermal treatments (dry-heat, heat-moisture and autoclave treatments) prior to phosphorylation. Upon dual modification of starch with thermal treatments and phosphorylation, the phosphorous content and degree of crosslinking significantly increased (p ≤ 0.05) and was confirmed by the increased peak intensity of P=O and P–O–C stretching vibrations compared to phosphorylated talipot starch in the FT-IR spectrum. The highest degree of crosslinking (0.00418) was observed in the autoclave pretreated phosphorylated talipot starch sample. Thermal pretreatment remarkably changed the granule morphology by creating fissures and grooves. The amylose content and relative crystallinity of all phosphorylated talipot starches significantly decreased (p ≤ 0.05) due to crosslinking by the formation of phosphodiester bonds, reducing the swelling power of dual-modified starches. Among all modified starches, dry-heat pretreated phosphorylated starch gel showed an improved light transmittance value of 28.4%, indicating reduced retrogradation tendency. Pasting and rheological properties represented that the thermal pretreated phosphorylated starch formed stronger gels that improved thermal and shear resistance. Autoclave treatment before phosphorylation of talipot starch showed the highest resistant starch content of 48.08%. KW - Talipot starch KW - Non-conventional starch Y1 - VL - 13 IS - 3855 ER - TY - JOUR A1 - Haas, Theodor A1 - Markl, Erich A1 - Lackner, Maximilian T1 - Innovative use of waste tyres: Noise-barriers and geoengineering JF - World Journal of Advanced Engineering Technology and Sciences KW - Engineering KW - Wastemanagement Y1 - ER - TY - CHAP A1 - Tabakovic, Momir A1 - Würfl, Marlen A1 - Guerra, Eduardo A1 - Gutleder, Miriam T1 - Operating models for PV systems in existing residential building complexes in Vienna – challenges and opportunities T2 - XI International Conference Industrial Engineering and Environmental Protection 2021 (IIZS 2021) N2 - This paper aims to identify challenges and opportunities that are associated with installing PV (Photovoltaic) systems in existing residential building complexes in Vienna. For this purpose, a project-oriented approach was chosen and hence a representative residential building complex in Vienna was chosen and analyzed to demonstrate the challenges that are associated with such projects. Furthermore, a particular focus lies on exploring different operating models that are available when it comes to the execution of such a project. As this paper builds on the rather novel topic of exploring new operating models for installing PV systems on existing residential building complexes in Vienna, many further suggestions for research can be identified that exceed the scope of this paper. KW - Photovoltaics KW - Renewable Energy KW - Urban Areas Y1 - ER - TY - GEN A1 - Tabakovic, Momir T1 - International Weeks als Plattformen für länderübergreifende Zusammenarbeit KW - Internationalisation Y1 - ER - TY - CHAP A1 - Kaufmann, Christian A1 - Wahl, Harald T1 - A Technical Support to Enrich Existing Software Development Courses, with the Additional Topic of Secure Coding T2 - In Proceedings of the iiWAS2021, 23rd International Conference on Information Integration and Web-based Applications & Services, Linz, Austria, November 30 – December 01, 2021 KW - Secure Code KW - Education KW - Secure Software Engineering Y1 - 2021 SP - 519 EP - 524 ER - TY - CHAP A1 - Kaufmann, Christian A1 - Wahl, Harald A1 - Kramer, Michael A1 - Mense, Alexander T1 - Obstacles in Teaching Secure Software Development - How We Can Overcome Them T2 - 11th International Conference on Information Science and Information Literacy (ICISIL 2021), Brașov, Romania, March 2021 KW - Lernen KW - Lehren KW - Secure Software Development KW - Automated Feedback KW - Technology Acceptance Y1 - 2021 ER - TY - JOUR A1 - Kostogryz, Nadiia M. A1 - Kupka, Friedrich A1 - Piskunov, Nikolai A1 - Fabbian, Damian A1 - Krüger, Daniel A1 - Gizon, Laurent T1 - Accurate Short-Characteristics Radiative Transfer in A Numerical Tool for Astrophysical Research (ANTARES) JF - Solar Physics KW - Astrophysics Y1 - ER - TY - CHAP A1 - Lietze, Stefanie A1 - Langer, Karin A1 - Krizek, Gerd Christian T1 - Getting started – eigene Lehrvideos gestalten T2 - Conference: Hochschulen im digitalen (Klima)Wandel KW - Lehrvideos KW - Lernvideos KW - E-Learning KW - Mobile Learning Y1 - ER - TY - JOUR A1 - Shan, Yutong A1 - Reiners, Ansgar A1 - Fabbian, Damian A1 - Marfil, Emilio A1 - Montes, David A1 - Tabernero, Hugo M. A1 - Ribas, Ignasi A1 - Caballero, Jose A. A1 - Quirrenbach, Andreas A1 - Amado, Pedro J. A1 - Aceituno, Jesus A1 - Bejar, Victor J. S. A1 - Cortes-Contreras, Miriam A1 - Dreizler, Stefan A1 - Hatzes, Artie P. A1 - Henning, Thomas A1 - Jeffers, Sandra V. A1 - Kaminski, Adrian A1 - Kurster, Martin A1 - Lafarga, Marina A1 - Morales, Juan Carlos A1 - Nagel, Evangelos A1 - Palle, Enric A1 - Passegger, Vera M. A1 - Lopez, Cristina Rodriguez A1 - Schweitzer, Andreas A1 - Zechmeister, Mathias T1 - The CARMENES search for exoplanets around M dwarfs Not-so-fine hyperfine-split vanadium lines in cool star spectra JF - Astronomy & Astrophysics KW - Atomic data KW - Low-mass stars Y1 - VL - 654 ER - TY - JOUR A1 - Wöber, Wilfried A1 - Curto, Manuel A1 - Tibihika, Papius D. A1 - Meulenboek, Paul A1 - Alemayehu, Esayas A1 - Mehnen, Lars A1 - Meimberg, Harald A1 - Sykacek, Peter T1 - Identifying geographically differentiated features of Ethopian Nile tilapia (Oreochromis niloticus) morphology with machine learning JF - PlosONE KW - Machine Learning Y1 - VL - 16 IS - 4 ER - TY - JOUR A1 - Cubas Armas, Melania A1 - Fabbian, Damian T1 - Do MURaM and STAGGER Simulations of Solar Faculae Match Observational Signatures from Magnetic Structures? JF - The Astrophysical Journal N2 - We compare results of simulations of solar facular-like conditions performed using the numerical codes MURaM and STAGGER. Both simulation sets have a similar setup, including the initial condition of ≈200 G vertical magnetic flux. After interpolating the output physical quantities to constant optical depth, we compare them and test them against inversion results from solar observations. From the snapshots, we compute the monochromatic continuum in the visible and infrared, and the full Stokes vector of the Fe i spectral line pair around 6301–6302 Å. We compare the predicted spectral lines (at the simulation resolution and after smearing to the HINODE SP/SOT resolution) in terms of their main parameters for the Stokes I line profiles, and of their area and amplitude asymmetry for the Stokes V profiles. The codes produce magnetoconvection with similar appearance and distribution in temperature and velocity. The results also closely match the values from recent relevant solar observations. Although the overall distribution of the magnetic field is similar in both radiation-magnetohydrodynamic (RMHD) simulation sets, a detailed analysis reveals substantial disagreement in the field orientation, which we attribute to the differing boundary conditions. The resulting differences in the synthetic spectra disappear after spatial smearing to the resolution of the observations. We conclude that the two sets of simulations provide robust models of solar faculae. Nevertheless, we also find differences that call for caution when using results from RMHD simulations to interpret solar observational data. KW - Magnetohydrodynamics KW - Magnetohydrodynamical simulations KW - Radiative transfer KW - Active sun KW - Solar magnetic fields Y1 - VL - 923 IS - 2 ER - TY - JOUR A1 - Henderson, Ben A1 - Slingers, Gitte A1 - Pedrotti, Michele A1 - Pugliese, Giovanni A1 - Malaskova, Michaela A1 - Bryant, Luke A1 - Lomonaco, Tommaso A1 - Ghimenti, Silvia A1 - Moreno, Sergi A1 - Cordell, Rebecca A1 - Harren, Frans J M A1 - Schubert, Jochen A1 - Mayhew, Chris A A1 - Wilde, Michael A1 - Di Francesco, Fabio A1 - Koppen, Gudrun A1 - Beauchamp, Jonathan D A1 - Cristescu, Simona M T1 - The peppermint breath test benchmark for PTR-MS and SIFT-MS JF - Journal of Breath Research N2 - A major challenge for breath research is the lack of standardization in sampling and analysis. To address this, a test that utilizes a standardized intervention and a defined study protocol has been proposed to explore disparities in breath research across different analytical platforms and to provide benchmark values for comparison. Specifically, the Peppermint Experiment involves the targeted analysis in exhaled breath of volatile constituents of peppermint oil after ingestion of the encapsulated oil. Data from the Peppermint Experiment performed by proton transfer reaction mass spectrometry (PTR-MS) and selected ion flow tube mass spectrometry (SIFT-MS) are presented and discussed herein, including the product ions associated with the key peppermint volatiles, namely limonene, α- and β-pinene, 1,8-cineole, menthol, menthone and menthofuran. The breath washout profiles of these compounds from 65 individuals were collected, comprising datasets from five PTR-MS and two SIFT-MS instruments. The washout profiles of these volatiles were evaluated by comparing the log-fold change over time of the product ion intensities associated with each volatile. Benchmark values were calculated from the lower 95% confidence interval of the linear time-to-washout regression analysis for all datasets combined. Benchmark washout values from PTR-MS analysis were 353 min for the sum of monoterpenes and 1,8-cineole (identical product ions), 173 min for menthol, 330 min for menthofuran, and 218 min for menthone; from SIFT-MS analysis values were 228 min for the sum of monoterpenes, 281 min for the sum of monoterpenes and 1,8-cineole, and 370 min for menthone plus 1,8-cineole. Large inter- and intra-dataset variations were observed, whereby the latter suggests that biological variability plays a key role in how the compounds are absorbed, metabolized and excreted from the body via breath. This variability seems large compared to the influence of sampling and analytical procedures, but further investigations are recommended to clarify the effects of these factors. KW - standardization KW - breathomics KW - peppermint KW - benchmark KW - TR-MS Y1 - U6 - http://dx.doi.org/https://doi.org/10.1088/1752-7163/ac1fcf IS - 15 SP - Artikelnr. 046005 ER - TY - JOUR A1 - Spada, Federico A1 - Demarque, Pierre A1 - Kupka, Friedrich T1 - Stellar evolution models with entropy-calibrated mixing-length parameter: application to red giants JF - Mon. Not. Roy. Astron. Soc. KW - solar KW - stellar KW - astrophysics Y1 - U6 - http://dx.doi.org/https://doi.org/10.1093/mnras/stab1106 ER -