@article{Huber, author = {Huber, Albert}, title = {The gravitational field of a massless particle on the horizon of a stationary black hole}, series = {Classical and Quantum Gravity}, journal = {Classical and Quantum Gravity}, abstract = {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.}, subject = {Gravitation}, language = {en} } @article{HoffmannKuba, author = {Hoffmann, Michael E. and Kuba, Markus}, title = {Logarithmic integrals, zeta values, and tiered binomial coeffcients}, series = {Monatshefte fuer Mathematik}, journal = {Monatshefte fuer Mathematik}, subject = {Integrals}, language = {en} } @article{BelkacemKupkaPhilidetetal., author = {Belkacem, K{\´e}vin and Kupka, Friedrich and Philidet, Jordan and Samadi, R{\´e}za}, title = {Surface effects and turbulent pressure. Assessing the Gas-Γ1 and Reduced-Γ1 empirical models.}, series = {Astronomy \& Astrophysics}, journal = {Astronomy \& Astrophysics}, subject = {Surface}, language = {en} } @article{RauerKroissKryvinskaetal., author = {Rauer, Johannes Nikolaus and Kroiss, Michael and Kryvinska, Natalia and Engelhardt-Nowitzki, Corinna and Aburaia, Mohamed}, title = {Cross-university virtual teamwork as a means of internationalization at home}, series = {The International Journal of Management Education, Volume 19, Issue 3}, journal = {The International Journal of Management Education, Volume 19, Issue 3}, number = {Issue 3}, subject = {Virtual Teamwork}, language = {en} } @article{SinelnikovaMandlAgeliietal., author = {Sinelnikova, Anna and Mandl, Thomas and Agelii, Harald and Gr{\aa}n{\"a}s, Oscar and Marklund, Erik G. and Caleman, Carl and De Santis, Emiliano}, title = {Protein orientation in time-dependent electric fields: orientation before destruction}, series = {Biophysical Journal}, journal = {Biophysical Journal}, number = {Volume 120, Issue 17}, pages = {3709 -- 3717}, subject = {Protein}, language = {en} } @article{KubaVarvak, author = {Kuba, Markus and Varvak, Anna}, title = {On Path diagrams and Stirling permutations}, series = {S{\´e}minaire Lotharingien de Combinatoire}, journal = {S{\´e}minaire Lotharingien de Combinatoire}, number = {B82c (2021)}, pages = {28}, abstract = {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.}, subject = {Kettenbruch}, language = {en} } @article{Wala, author = {Wala, Thomas}, title = {Fitness im B{\"u}ro mit Active Workplace Design}, series = {Wirtschaft und Management : Schriftenreihe zur wirtschaftswissenschaftlichen Forschung und Praxis}, journal = {Wirtschaft und Management : Schriftenreihe zur wirtschaftswissenschaftlichen Forschung und Praxis}, number = {31}, pages = {47 -- 58}, abstract = {Wissensarbeiter:innen verbringen den {\"u}berwiegenden Teil ihrer Arbeitszeit sitzend vor dem Computer. Die negativen Folgen von langem Sitzen f{\"u}r die Gesundheit sind bekannt: Zu langes Sitzen bedingt einen niedrigen Kalorienverbrauch, der Stoffwechsel und das Herz-Kreislaufsystem laufen auf Sparflamme. Entsprechend steigt das Risiko f{\"u}r {\"U}bergewicht, 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 zur{\"u}ckzuf{\"u}hrenden reduzierten physischen und psychischen Wohlbefinden weniger produktiv und kreativ arbeiten bzw. aufgrund von Erkrankungen erst gar nicht arbeiten k{\"o}nnen. Der vorliegende Beitrag zeigt auf, wie Unternehmen durch das Setzen sanfter Bewegungszw{\"a}nge, den Einsatz dynamischer Arbeitsstationen sowie die Integration niederschwelliger Fitnessmodule in die B{\"u}rolandschaft f{\"u}r mehr k{\"o}rperliche Aktivit{\"a}t im Arbeitsalltag sorgen k{\"o}nnen.}, subject = {Arbeitsplatz}, language = {de} } @misc{Kupka, author = {Kupka, Friedrich}, title = {Improvements to the Short-Characteristics Method in 3D RHD Simulations and some Unsolved Problems in Spectral Line Shapes of A-type Stars}, subject = {Convection}, language = {en} } @misc{Kupka, author = {Kupka, Friedrich}, title = {Improvements in Numerical and Analytical Modelling Techniques to Study the Solar Surface}, subject = {Convection}, language = {en} } @misc{Kupka, author = {Kupka, Friedrich}, title = {Advanced Convection Modelling in Asteroseismology and Stellar Evolution}, subject = {Convection}, language = {en} } @article{Huber, author = {Huber, Albert}, title = {Hidden Killing fields, geometric symmetries and black hole mergers}, series = {Annals of Physics}, volume = {434}, journal = {Annals of Physics}, pages = {17}, abstract = {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-Nordstr{\"o}m black holes.}, subject = {Hidden Killing}, language = {en} } @incollection{LehnerSohm, author = {Lehner, Martin and Sohm, Kurt}, title = {Qualit{\"a}t, didaktische Methodik und Digitalit{\"a}t}, series = {Wie Corona die Hochschullehre ver{\"a}ndert: Erfahrungen und Gedanken aus der Krise zum zuk{\"u}nftigen Einsatz von eLearning}, booktitle = {Wie Corona die Hochschullehre ver{\"a}ndert: Erfahrungen und Gedanken aus der Krise zum zuk{\"u}nftigen Einsatz von eLearning}, publisher = {Springer Gabler}, publisher = {Fachhochschule Technikum Wien}, pages = {339 -- 350}, subject = {Hochschuldidaktik}, language = {de} } @article{KnollTartlerWala, author = {Knoll, Leonhard and Tartler, Thomas and Wala, Thomas}, title = {Marktrisikopr{\"a}mie in {\"O}sterreich: ein halbes Jahrhundert kein klarer Sieger bei Aktie vs Anleihe}, series = {CFO Aktuell}, journal = {CFO Aktuell}, number = {J{\"a}nner 2021}, pages = {12 -- 15}, subject = {Aktie}, language = {de} } @article{Wala, author = {Wala, Thomas}, title = {Die betriebswirtschaftliche Klausur: Kostenrechnung.}, series = {WISU}, journal = {WISU}, number = {6, 2021}, pages = {681 -- 684}, subject = {Betriebswirtschaftslehre}, language = {de} } @incollection{WalaFelleitnerGoll, author = {Wala, Thomas and Felleitner-Goll, Katharina}, title = {Rahmenbedingungen der betrieblichen Innovationsarbeit}, series = {Multidisziplin{\"a}re Perspektiven im Innovations-und Wissensmanagement}, booktitle = {Multidisziplin{\"a}re Perspektiven im Innovations-und Wissensmanagement}, publisher = {Peter Lang}, address = {Berlin}, publisher = {Fachhochschule Technikum Wien}, pages = {37 -- 58}, subject = {Betriebswirtschaftslehre}, language = {de} } @article{Wala, author = {Wala, Thomas}, title = {Kreative Raumkonzepte f{\"o}rdern die Innovationskraft}, series = {Wissensmanagement}, journal = {Wissensmanagement}, number = {2, 2021}, pages = {29}, subject = {Innovation}, language = {de} } @incollection{Salmen, author = {Salmen, Christine}, title = {Erz{\"a}hlungen vom Umbruch in Rum{\"a}nien 1989}, series = {Der Fall des Eisernen Vorhangs 1989 und die Folgen: europ{\"a}ische p{\"a}dagogische Perspektiven}, booktitle = {Der Fall des Eisernen Vorhangs 1989 und die Folgen: europ{\"a}ische p{\"a}dagogische Perspektiven}, publisher = {LIT Verlag}, publisher = {Fachhochschule Technikum Wien}, subject = {Eiserne Vorhang}, language = {de} } @inproceedings{ValckenborgBergerUjvarietal., author = {Valckenborg, Roland and Berger, Karl A. and {\´U}jv{\´a}ri, Guszt{\´a}v and Eder, Gabriele C. and Gaisberger, Lukas and Tabakovic, Momir and Polo Lopez, Christina S. and Boddaert, Simon and del Buono, Matteo and Mart{\´i}n Chivelet, Nuria and Sanz Martinez, Asier and Kim, Jun-Tae and Gerd Imenes, Anne}, title = {COMPARISON OF IEC 61853-1 MATRIX EVALUATIONS BASED ON INDOOR AND OUTDOOR MEASUREMENT DATA FROM PVPS TASK 15 BIPV ROUND-ROBIN}, series = {38th European Photovoltaic Solar Energy Conference Proceedings, September 6-10, 2021}, booktitle = {38th European Photovoltaic Solar Energy Conference Proceedings, September 6-10, 2021}, subject = {Measurement}, language = {en} } @inproceedings{SchwaigerAburaiaAburaiaetal., author = {Schwaiger, Simon and Aburaia, Mohamed and Aburaia, Ali and W{\"o}ber, Wilfried}, title = {Explainable Artificial Intelligence for Robot Arm Control}, series = {Proceedings of the 32nd International DAAAM Virtual Symposium `Intelligent Manufacturing \& Automation`, 28-29th October 2021, Vienna}, volume = {32}, booktitle = {Proceedings of the 32nd International DAAAM Virtual Symposium `Intelligent Manufacturing \& Automation`, 28-29th October 2021, Vienna}, number = {1}, pages = {0640 -- 0647}, subject = {Artificial Intelligence}, language = {en} } @article{LacknerLutzHribernig, author = {Lackner, Maximilian and Lutz, Markus and Hribernig, Thomas}, title = {Neuartiges Verfahren zum L{\"o}schen von Metallbr{\"a}nden mit Zelluloseflakes}, series = {Feuerwehr Fachjournal}, journal = {Feuerwehr Fachjournal}, number = {September 2021}, pages = {54}, subject = {Extinguisher}, language = {de} } @book{WalaEllingerFranzetal., author = {Wala, Thomas and Ellinger, Florian and Franz, Peter and Kriz, Agnes and Zangl, Sabine and Sohm, Kurt and Tabakovic, Momir and Gollner, Helmut and Adams, Mark and Litzenberger, Stefan}, title = {Internationalisierung von Fachhochschulstudieng{\"a}ngen.: Ideen, Konzepte \& Erfahrungsberichte}, publisher = {Independently Published}, isbn = {ISBN-13 : ‎979-8650872184}, publisher = {Fachhochschule Technikum Wien}, subject = {Internationalisation}, language = {en} } @article{WagnerLackner, author = {Wagner, Isabella and Lackner, Maximilian}, title = {Extraction and Analysis of Natural Rubber from the Latex of Ficus carica, Artocarpus heterophyllus and Polymer Analysis of Durio zibethinus}, series = {Austin Journal of Biotechnology \& Bioengineering}, journal = {Austin Journal of Biotechnology \& Bioengineering}, number = {Vol. 8 (2)}, abstract = {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.}, subject = {Extraction}, language = {en} } @article{PetrovNeussnerLackner, author = {Petrov, Timothy and Neussner, Wolfgang and Lackner, Maximilian}, title = {Digitalization of the Process Landscape for Proprietary Bond Trading}, series = {Sustainable Future and Technology Development}, journal = {Sustainable Future and Technology Development}, number = {Vol 3, No 6, 2021}, abstract = {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.}, subject = {Digitalization}, language = {en} } @inproceedings{KlamertSchmidTraxlerLackner, author = {Klamert-Schmid, Judith and Traxler, Sabine and Lackner, Maximilian}, title = {The Phenomenon Of 'Opportunity Recognition' Among Engineering Student}, series = {24th International Conference on Interactive Collaborative Learning(ICL2021), 22.-24.September 2021, Dresden}, booktitle = {24th International Conference on Interactive Collaborative Learning(ICL2021), 22.-24.September 2021, Dresden}, address = {Dresden}, subject = {Engineering}, language = {en} } @article{KlamertSchmidLackner, author = {Klamert-Schmid, Judith and Lackner, Maximilian}, title = {Arbeiten und studieren im Homeoffice}, series = {Alle! Achtung! Das Sicherheitsmagazin der AUVA}, journal = {Alle! Achtung! Das Sicherheitsmagazin der AUVA}, number = {10/2021}, subject = {Home Office}, language = {de} } @article{AaliyaSunoojSriRajkumaretal., author = {Aaliya, Basheer and Sunooj, Kappat Valiyapeediyekkal and Sri Rajkumar, Chillapalli Babu and Navaf, Muhammed and Akhila, Plachikkattu Parambil and Sudheesh, Cherakkathodi and George, Johnsy and Lackner, Maximilian}, title = {Effect of Thermal Pretreatments on Phosphorylation of Corypha umbraculifera L. Stem Pith Starch: A Comparative Study Using Dry-Heat, Heat-Moisture and Autoclave Treatments}, series = {Polymers}, volume = {13}, journal = {Polymers}, number = {3855}, abstract = {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\%.}, subject = {Talipot starch}, language = {en} } @article{HaasMarklLackner, author = {Haas, Theodor and Markl, Erich and Lackner, Maximilian}, title = {Innovative use of waste tyres: Noise-barriers and geoengineering}, series = {World Journal of Advanced Engineering Technology and Sciences}, journal = {World Journal of Advanced Engineering Technology and Sciences}, subject = {Engineering}, language = {en} } @misc{Tabakovic, author = {Tabakovic, Momir}, title = {International Weeks als Plattformen f{\"u}r l{\"a}nder{\"u}bergreifende Zusammenarbeit}, subject = {Internationalisation}, language = {de} } @inproceedings{KaufmannWahl, author = {Kaufmann, Christian and Wahl, Harald}, title = {A Technical Support to Enrich Existing Software Development Courses, with the Additional Topic of Secure Coding}, series = {In Proceedings of the iiWAS2021, 23rd International Conference on Information Integration and Web-based Applications \& Services, Linz, Austria, November 30 - December 01, 2021}, booktitle = {In Proceedings of the iiWAS2021, 23rd International Conference on Information Integration and Web-based Applications \& Services, Linz, Austria, November 30 - December 01, 2021}, pages = {519 -- 524}, subject = {Secure Code}, language = {en} } @book{PastekaHruškovaJakubiketal., author = {Pasteka, Richard and Hruškov{\´a}, Jana and Jakub{\´i}k, Juraj and Hendrych, Michal and Svačinov{\´a}, Jana and Nov{\´a}kov{\´a}, Zuzana and Vejtasov{\´a}, Veronika and Kujalov{\´a}, Veronika and Budinskaya, Ksenia}, title = {Fyziologie - teorie k praktick{\´y}m cvičen{\´i}m}, publisher = {Masarykova univerzita, Fakulta informatiky Masarykovy univerzity}, address = {Brno}, publisher = {Fachhochschule Technikum Wien}, subject = {Physiology}, language = {mul} } @book{HruškovaPastekaJakubiketal., author = {Hruškov{\´a}, Jana and Pasteka, Richard and Jakub{\´i}k, Juraj and Hendrych, Michal and Svačinov{\´a}, Jana and Nov{\´a}kov{\´a}, Zuzana and Vejtasov{\´a}, Veronika and Kujalov{\´a}, Veronika and Budinskaya, Ksenia}, title = {Workbook fyziologie protokoly}, publisher = {Masarykova univerzita}, address = {Brno}, isbn = {978-80-210-9897-8}, publisher = {Fachhochschule Technikum Wien}, subject = {Physiology}, language = {mul} } @inproceedings{KaufmannWahlKrameretal., author = {Kaufmann, Christian and Wahl, Harald and Kramer, Michael and Mense, Alexander}, title = {Obstacles in Teaching Secure Software Development - How We Can Overcome Them}, series = {11th International Conference on Information Science and Information Literacy (ICISIL 2021), Brașov, Romania, March 2021}, booktitle = {11th International Conference on Information Science and Information Literacy (ICISIL 2021), Brașov, Romania, March 2021}, subject = {Lernen}, language = {en} } @article{KostogryzKupkaPiskunovetal., author = {Kostogryz, Nadiia M. and Kupka, Friedrich and Piskunov, Nikolai and Fabbian, Damian and Kr{\"u}ger, Daniel and Gizon, Laurent}, title = {Accurate Short-Characteristics Radiative Transfer in A Numerical Tool for Astrophysical Research (ANTARES)}, series = {Solar Physics}, journal = {Solar Physics}, subject = {Astrophysics}, language = {en} } @inproceedings{LietzeLangerKrizek, author = {Lietze, Stefanie and Langer, Karin and Krizek, Gerd Christian}, title = {Getting started - eigene Lehrvideos gestalten}, series = {Conference: Hochschulen im digitalen (Klima)Wandel}, booktitle = {Conference: Hochschulen im digitalen (Klima)Wandel}, subject = {Lehrvideos}, language = {de} } @article{ShanReinersFabbianetal., author = {Shan, Yutong and Reiners, Ansgar and Fabbian, Damian and Marfil, Emilio and Montes, David and Tabernero, Hugo M. and Ribas, Ignasi and Caballero, Jose A. and Quirrenbach, Andreas and Amado, Pedro J. and Aceituno, Jesus and Bejar, Victor J. S. and Cortes-Contreras, Miriam and Dreizler, Stefan and Hatzes, Artie P. and Henning, Thomas and Jeffers, Sandra V. and Kaminski, Adrian and Kurster, Martin and Lafarga, Marina and Morales, Juan Carlos and Nagel, Evangelos and Palle, Enric and Passegger, Vera M. and Lopez, Cristina Rodriguez and Schweitzer, Andreas and Zechmeister, Mathias}, title = {The CARMENES search for exoplanets around M dwarfs Not-so-fine hyperfine-split vanadium lines in cool star spectra}, series = {Astronomy \& Astrophysics}, volume = {654}, journal = {Astronomy \& Astrophysics}, subject = {Atomic data}, language = {en} } @article{CubasArmasFabbian, author = {Cubas Armas, Melania and Fabbian, Damian}, title = {Do MURaM and STAGGER Simulations of Solar Faculae Match Observational Signatures from Magnetic Structures?}, series = {The Astrophysical Journal}, volume = {923}, journal = {The Astrophysical Journal}, number = {2}, abstract = {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 {\AA}. 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.}, subject = {Magnetohydrodynamics}, language = {en} } @article{HendersonSlingersPedrottietal., author = {Henderson, Ben and Slingers, Gitte and Pedrotti, Michele and Pugliese, Giovanni and Malaskova, Michaela and Bryant, Luke and Lomonaco, Tommaso and Ghimenti, Silvia and Moreno, Sergi and Cordell, Rebecca and Harren, Frans J M and Schubert, Jochen and Mayhew, Chris A and Wilde, Michael and Di Francesco, Fabio and Koppen, Gudrun and Beauchamp, Jonathan D and Cristescu, Simona M}, title = {The peppermint breath test benchmark for PTR-MS and SIFT-MS}, series = {Journal of Breath Research}, journal = {Journal of Breath Research}, number = {15}, doi = {https://doi.org/10.1088/1752-7163/ac1fcf}, pages = {Artikelnr. 046005}, abstract = {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.}, subject = {standardization}, language = {en} } @article{SpadaDemarqueKupka, author = {Spada, Federico and Demarque, Pierre and Kupka, Friedrich}, title = {Stellar evolution models with entropy-calibrated mixing-length parameter: application to red giants}, series = {Mon. Not. Roy. Astron. Soc.}, journal = {Mon. Not. Roy. Astron. Soc.}, doi = {https://doi.org/10.1093/mnras/stab1106}, subject = {solar}, language = {en} } @misc{Kupka, author = {Kupka, Friedrich}, title = {On the Potential of the Reynolds Stress Approach to Model Convective Overshooting in Grids of Stellar Evolution Models}, doi = {https://doi.org/10.5281/zenodo.5572778}, subject = {Convection}, language = {en} }