@article{SmekhovaSzyjkaLaTorreetal.2024, author = {Smekhova, Alevtina and Szyjka, Thomas and La Torre, Enrico and Ollefs, Katharina and Eggert, Benedikt and Coester, Birte and Wilhelm, Fabrice and Bali, Rantej and Lindner, J{\"u}rgen and Rogalev, Andrei and T{\"o}bbens, Daniel Maria and Weschke, Eugen and Luo, Chen and Chen, Kai and Radu, Florin and Schmitz-Antoniak, Carolin and Wende, Heiko}, title = {Irradiation-induced enhancement of Fe and Al magnetic polarizations in Fe60Al40 films}, series = {New Journal of Physics}, volume = {26}, journal = {New Journal of Physics}, publisher = {Institute of Physics Publishing (IOP)}, issn = {1367-2630}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18381}, year = {2024}, abstract = {The rise of Fe magnetic moment, changes in Al electronic structure and a variation of Al magnetic polarization in thin films of transition metal aluminide Fe60Al40 have been probed through the order-disorder phase transition by soft X-ray absorption spectroscopy and X-ray resonant magnetic reflectivity in the extreme ultraviolet regime. In a course of the transition induced by 20 keV Ne+ irradiation with low fluences (1014 ions·cm-2), X-ray magnetic circular dichroism spectra taken at the Fe L2,3 absorption edges at room and low temperatures revealed a pronounced increase of Fe 3d states spin-polarization. X-ray resonant magnetic reflectivity applied to the Al L2,3 and Fe M2,3 edges allowed to detect the magnetic polarization of Al atoms in the films. The changes in Al electronic structure have been seen by alteration of Al K edge X-ray absorption near edge structure. A difference in anisotropy fields for films before and after irradiation has been observed by element-specific hysteresis loops recorded at low temperatures in absorption and reflection geometries at the Fe L2,3 and M2,3 edges, respectively. An attempt to reduce the top oxide layer by an inductively coupled hydrogen plasma has shown a possibility to recover the chemically ordered phase.}, language = {en} } @article{KagelBierFrohmeetal.2019, author = {Kagel, Heike and Bier, Frank Fabian and Frohme, Marcus and Gl{\"o}kler, J{\"o}rn}, title = {A Novel Optical Method To Reversibly Control Enzymatic Activity Based On Photoacids}, series = {Scientific Reports}, volume = {9}, journal = {Scientific Reports}, issn = {2045-2322}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-12685}, year = {2019}, abstract = {Most biochemical reactions depend on the pH value of the aqueous environment and some are strongly favoured to occur in an acidic environment. A non-invasive control of pH to tightly regulate such reactions with defined start and end points is a highly desirable feature in certain applications, but has proven difficult to achieve so far. We report a novel optical approach to reversibly control a typical biochemical reaction by changing the pH and using acid phosphatase as a model enzyme. The reversible photoacid G-acid functions as a proton donor, changing the pH rapidly and reversibly by using high power UV LEDs as an illumination source in our experimental setup. The reaction can be tightly controlled by simply switching the light on and off and should be applicable to a wide range of other enzymatic reactions, thus enabling miniaturization and parallelization through non-invasive optical means.}, language = {en} } @article{KagelJacobsBieretal.2019, author = {Kagel, Heike and Jacobs, Hannes and Bier, Frank Fabian and Gl{\"o}kler, J{\"o}rn and Frohme, Marcus}, title = {A Novel Microtiter Plate Format High Power Open Source LED Array}, series = {Photonics}, volume = {6}, journal = {Photonics}, number = {1}, issn = {2304-6732}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-11307}, year = {2019}, abstract = {Many photochemical or photobiological applications require the use of high power ultraviolet light sources, such as high-pressure mercury arc lamps. In addition, many photo-induced chemical, biochemical and biological applications require either a combinatorial setting or a parallel assay of multiple samples under the same environmental conditions to ensure reproducibility. To achieve this, alternative, controllable light sources, such as ultraviolet light emitting diodes (UV LEDs) with high power and spatial control are required. Preferably, LEDs are arranged in a suitable standardized 96-well microtiter plate format. We designed such an array and established the methods required for heat management and enabling stable, controllable illumination over time.}, language = {en} } @article{KnihaDvořakHaladaetal.2020, author = {Kniha, Edwin and Dvoř{\´a}k, V{\´i}t and Halada, Petr and Milchram, Markus and Obwaller, Adelheid G. and Kuhls, Katrin and Schlegel, Susanne and K{\"o}hsler, Martina and Poeppl, Wolfgang and Bakran-Lebl, Karin and Fuehrer, Hans-Peter and Volfov{\´a}, Věra and Mooseder, Gerhard and Ivovic, Vladimir and Volf, Petr and Walochnik, Julia}, title = {Integrative Approach to Phlebotomus mascittii Grassi, 1908: First Record in Vienna with New Morphological and Molecular Insights}, series = {Pathogens}, volume = {9}, journal = {Pathogens}, number = {12}, publisher = {MDPI}, issn = {2076-0817}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13600}, year = {2020}, abstract = {Sand flies (Diptera: Psychodidae: Phlebotominae) are blood-feeding insects that transmit the protozoan parasites Leishmania spp. and various arthropod-borne (arbo) viruses. While in Mediterranean parts of Europe the sand fly fauna is diverse, in Central European countries including Austria mainly Phlebotomus mascittii is found, an assumed but unproven vector of Leishmania infantum. To update the currently understudied sand fly distribution in Austria, a sand fly survey was performed and other entomological catches were screened for sand flies. Seven new trapping locations of Ph. mascittii are reported including the first record in Vienna, representing also one of the first findings of this species in a city. Morphological identification, supported by fluorescence microscopy, was confirmed by two molecular approaches, including sequencing and matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) protein profiling. Sand fly occurrence and activity were evaluated based on surveyed locations, habitat requirements and climatic parameters. Moreover, a first comparison of European Ph. mascittii populations was made by two marker genes, cytochrome c oxidase subunit 1 (COI), and cytochrome b (cytb), as well as MALDI-TOF mass spectra. Our study provides new important records of Ph. mascittii in Austria and valuable data for prospective entomological surveys. MALDI-TOF MS protein profiling was shown to be a reliable tool for differentiation between sand fly species. Rising temperatures and globalization demand for regular entomological surveys to monitor changes in species distribution and composition. This is also important with respect to the possible vector competence of Ph. mascittii.}, language = {en} } @article{DemskiSeidlitzKukeetal.2025, author = {Demski, Nils Maximilian and Seidlitz, Holger and Kuke, Felix and Dorn, Oliver Niklas and Zoglauer, Janina and H{\"u}ckstaedt, Tobias and Kamm, Paul Hans and Garc{\´i}a-Moreno, Francisco and Kremp, Noah and Dreyer, Christian and Oberschmidt, Dirk}, title = {Flow-Line-Reducing Tetrahedral Metal Effect Pigments for Injection Molding: A Yield-Rate-Improved Particle Manufacturing Method Based on Soft UVImprint Lithography}, series = {Polymers}, volume = {17}, journal = {Polymers}, number = {19}, publisher = {MDPI}, issn = {2073-4360}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20850}, year = {2025}, abstract = {This publication presents an improved manufacturing method for tetrahedral metal effect pigment particles that demonstrates reduced flowlines in injection-molded polymer components compared with conventional platelet-shaped pigment particles. The previously published cold forming process for tetrahedral particles, made entirely from aluminum, faced manufacturing challenges, resulting in a high reject rate due to particle adhesion to the micro-structured mold roller. In contrast, this study introduces a new manufacturing method for tetrahedral particles, now consisting of metallized UV-cured thermoset polymer. These particles, dispersed in amorphous matrix thermoplastics, have shown to maintain their shape during the injection molding process. The manufacturing technique for these novel particles is based on UV imprint lithography, omitting the reject rates compared with the previously presented cold rolling process of tetrahedral full aluminum particles. Thus, the novel manufacturing technique for tetrahedral pigment particles shows increased potential for automation through roll-to-roll manufacturing in the future.}, language = {en} } @article{BaleelaLlewellynFitzpatricketal.2014, author = {Baleela, Rania and Llewellyn, Martin S. and Fitzpatrick, Sinead and Kuhls, Katrin and Sch{\"o}nian, Gabriele and Miles, Michael A. and Mauricio, Isabel L.}, title = {Leishmania donovani populations in Eastern Sudan: temporal structuring and a link between human and canine transmission}, series = {Parasites \& Vectors}, volume = {7}, journal = {Parasites \& Vectors}, number = {496}, issn = {1756-3305}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-5921}, pages = {9}, year = {2014}, abstract = {Visceral leishmaniasis (VL), caused by the members of the Leishmania donovani complex, has been responsible for devastating VL epidemics in the Sudan. Multilocus microsatellite and sequence typing studies can provide valuable insights into the molecular epidemiology of leishmaniasis, when applied at local scales. Here we present population genetic data for a large panel of strains and clones collected in endemic Sudan between 1993 and 2001.}, language = {en} } @article{TanneKracherDietzeletal.2014, author = {Tanne, Johannes and Kracher, Daniel and Dietzel, Birgit and Schulz, Burkhard and Ludwig, Roland and Lisdat, Fred and Scheller, Frieder W. and Bier, Frank Fabian}, title = {Carboxylated or Aminated Polyaniline—Multiwalled Carbon Nanotubes Nanohybrids for Immobilization of Cellobiose Dehydrogenase on Gold Electrodes}, series = {Biosensors}, volume = {4}, journal = {Biosensors}, number = {4}, issn = {2079-6374}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-5826}, pages = {370 -- 386}, year = {2014}, abstract = {Polymer-multiwalled carbon nanotube (MWCNT) nanohybrids, which differ in surface charge have been synthesized to study the bioelectrocatalysis of adsorbed cellobiose dehydrogenase (CDH) from Phanerochaete sordida on gold electrodes. To obtain negatively charged nanohybrids, poly(3-amino-4-methoxybenzoic acid-co-aniline) (P(AMB-A)) was covalently linked to the surface of MWCNTs while modification with p-phenylenediamine (PDA) converted the COOH-groups to positively charged amino groups. Fourier transform infrared spectroscopy (FTIR) measurements verified the p-phenylenediamine (PDA) modification of the polymer-CNT nanohybrids. The positively charged nanohybrid MWCNT-P(AMB-A)-PDA promoted direct electron transfer (DET) of CDH to the electrode and bioelectrocatalysis of lactose was observed. Amperometric measurements gave an electrochemical response with KMapp = 8.89 mM and a current density of 410 nA/cm2 (15 mM lactose). The catalytic response was tested at pH 3.5 and 4.5. Interference by ascorbic acid was not observed. The study proves that DET between the MWCNT-P(AMB-A)-PDA nanohybrids and CDH is efficient and allows the sensorial detection of lactose.}, language = {en} } @article{FischbachLohBieretal.2017, author = {Fischbach, Jens and Loh, Qiuting and Bier, Frank Fabian and Lim, Theam Soon and Frohme, Marcus and Gl{\"o}kler, J{\"o}rn}, title = {Alizarin Red S for Online Pyrophosphate Detection Identified by a Rapid Screening Method}, series = {Scientific Reports}, volume = {7}, journal = {Scientific Reports}, issn = {2045-2322}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9248}, year = {2017}, abstract = {We identified Alizarin Red S and other well known fluorescent dyes useful for the online detection of pyrophosphate in enzymatic assays, including the loop mediated isothermal amplification (LAMP) and polymerase chain reaction (PCR) assays. An iterative screening was used for a selected set of compounds to first secure enzyme compatibility, evaluate inorganic pyrophosphate sensitivity in the presence of manganese as quencher and optimize conditions for an online detection. Of the selected dyes, the inexpensive alizarin red S was found to selectively detect pyrophosphate under LAMP and PCR conditions and is superior with respect to its defined red-shifted spectrum, long shelf life and low toxicity. In addition, the newly identified properties may also be useful in other enzymatic assays which do not generate nucleic acids but are based on inorganic pyrophosphate. Finally, we propose that our screening method may provide a blueprint for rapid screening of compounds for detecting inorganic pyrophosphate.}, language = {en} } @article{RievajStopkaVrabeletal.2016, author = {Rievaj, Vladimir and Stopka, Ondrej and Vrabel, Jan and Mokrickova, Lenka and Schmidt, Conrad}, title = {The Impact of Air Resistance on the Fuel Consumption in Real Conditions within the Transport Operation}, series = {Communications - Scientific Letters of the University of Zilina}, volume = {18}, journal = {Communications - Scientific Letters of the University of Zilina}, number = {2}, publisher = {University of Žilina}, address = {Žilina}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21159}, pages = {57 -- 61}, year = {2016}, abstract = {This paper presents the impact of air resistance (air resistance) on fuel consumption of the particular vehicle under real traffic conditions. In the introductory and subsequent part of the paper, the individual resistances influencing the moving vehicle are characterized. In the following chapter, the specific factors such as air resistance, driving speed, air temperature and air resistance coefficient in the context of their impact on fuel consumption of the particular vehicle are identified and described; as well as the comparisons of fuel consumption when the vehicle is moving on the highway with closed and open windows under different conditions of road traffic are performed.}, language = {en} } @inproceedings{Neumann2025, author = {Neumann, Gaby}, title = {From human experts to AI agents: Agentic AI for knowledge-intense problem-solving in logistics?}, series = {Proceedings of the 26th European Conference on Knowledge Management : VOL 1}, booktitle = {Proceedings of the 26th European Conference on Knowledge Management : VOL 1}, publisher = {Academic Conferences and Publishing International}, address = {Reading}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21223}, pages = {719 -- 727}, year = {2025}, abstract = {Logistics planning is a complex and complicated problem solving process requiring a wide range of knowledge and competence. A planning person or team represents a particular set of knowledge, skills, experience and personal attitudes. His, her or their level of competence decides about success or failure of the planning and about the quality of its results. With this, logistics planning is knowledge-based and knowledge-creating. Because of this, Knowledge Management can provide tremendous support to the planning person. Even though, there is a wide variety of (software) tools applicable to solve specific sub-problems throughout the planning process, human expertise is the key to develop creative planning solutions so far. Latest developments with regard to Artificial Intelligence (AI) might change this picture. AI is one of the most promising technological advancements, but also one of the most ambivalently discussed topics these days. It has surpassed humans at a number of tasks already and continues in doing so at new tasks in an increasing rate. Because of this, AI is capable to assist humans in many different ways. The latest boost of development moved AI application from those sophisticated communicators or task-oriented AI to intelligent agents or agentic AI allowing for autonomous, goal-driven decision-making. Hybrid approaches combine those advanced AI capabilities with human oversight, offering context-aware adaptability without full autonomy. In this way, artificial intelligence and human intelligence join forces in teams, for example, to solve complex problems creatively. Against this background, the paper analyses agentic AI with regard to its potential to support creative problem solving in a knowledge-intense field like logistics planning. Will AI agents become co-workers in logistics planning teams or can agentic AI design logistics solutions autonomously? With this, the paper focusses on chances and challenges coming with the highly dynamic evolution of AI within a complex, knowledge-intense application area where human experience, problem-solving capability and creativity is decisive. It contributes to discussions about necessary adjustments in how organizations manage their knowledge considering artificial and human intelligence.}, language = {en} } @article{PopaSchmidt2013, author = {Popa, Mihaela and Schmidt, Conrad}, title = {On the Rail-Based Freight Corridor Between CE and SEE Regions and the Main Obstacles on Romanian Territory}, series = {Transport Problems}, volume = {8}, journal = {Transport Problems}, number = {1}, publisher = {Silesian University of Technology}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21193}, pages = {47 -- 56}, year = {2013}, abstract = {The project "Freight and Logistics Advancement in Central/South-East Europe - Validation of trade and transport processes, Implementation of improvement actions, Application of co-coordinated structures" (in short - FLAVIA) is carried out under the Central Europe - Cooperation for Success Programme, cofunded by the European Regional Development Fund. One of the main objectives of FLAVIA project is to consolidate a logistic corridor from Central Europe (CE) to the South-East Europe (SEE) and the Black Sea Region, based on rail and inland waterways intermodal transport. In this paper we discuss the partial outputs of FLAVIA project, mainly related to the identified actual status of rail-based intermodal transport and trade obstacles of the freight flows on the Romanian territory and the used methodology. Several operational and long-term measures to improve the trade and intermodal transport are listed, considering the advantages of the geo-strategic potential of Romania location, connected with the several improvement directions already considered into the new released intermodal strategy.}, language = {en} } @article{VrabelStopkaRievajetal.2016, author = {Vrabel, Jan and Stopka, Ondrej and Rievaj, Vladimir and Sarkan, Branislav and Pruskova, Kristyna and Michalk, Philip}, title = {Measuring the Resistance of Tires for Passenger Vehicle against the Rolling and Sliding on Loading Area of the Flatbed Truck when Providing the Transport Services}, series = {Communications - Scientific Letters of the University of Zilina}, volume = {18}, journal = {Communications - Scientific Letters of the University of Zilina}, number = {2}, publisher = {University of Žilina}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21168}, pages = {124 -- 128}, year = {2016}, abstract = {This paper deals with the size of the forces affecting the vehicle during the transportation on a flatbed truck, railway wagon or container. It is necessary to secure the vehicle against these forces properly in order to prevent vehicles replacement. The laboratory measurements were performed in order to find out the size of coefficient of friction between the tire and the vehicles loading area. During the measurements, vehicle had different gears in order to determine to what extent the size of mechanical resistances affects the fixing and securing the vehicle against its replacement on the loading area. However, this paper does not propose the solution for securing the passenger vehicle on the loading area of a truck, railway wagon or container.}, language = {en} } @article{KubanovaSchmidt2016, author = {Kubanova, Jaroslava and Schmidt, Conrad}, title = {Multimodal and Intermodal Transportation Systems}, series = {Communications - Scientific Letters of the University of Zilina}, volume = {18}, journal = {Communications - Scientific Letters of the University of Zilina}, number = {2}, publisher = {University of Žilina}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21177}, pages = {104 -- 108}, year = {2016}, abstract = {The aim of this paper is to provide information on the general characterization of multimodal transport, intermodal and combined transport. There is also mentioned the distribution of basic transport processes and types of transhipment. Finally, this paper describes the practical examples of multimodal transport.}, language = {en} } @article{LizbetinVejsCahaetal.2016, author = {Lizbetin, Jan and Vejs, Petr and Caha, Zdenek and Lizbetinova, Lenka and Michalk, Philip}, title = {The Possibilities of Dynamic Shipment Weighing in Rail Freight Transport}, series = {Communications - Scientific Letters of the University of Zilina}, volume = {18}, journal = {Communications - Scientific Letters of the University of Zilina}, number = {2}, publisher = {University of Žilina}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21186}, pages = {113 -- 117}, year = {2016}, abstract = {This article deals with an analysis of the methods of the dynamic weighing of rail vehicles. The measurement of axle load (both static and dynamic) is one of the current standard processes within the technical specifications for interoperability (TSI).}, language = {en} } @article{LehnertLiebchenSchiefelbuschetal.2026, author = {Lehnert, Martin and Liebchen, Christian and Schiefelbusch, Martin and Bruder, Peter and Harmann, Dennis}, title = {Insights into Ridepooling efficiency: A case study analysis using a novel operational performance measure framework}, series = {Journal of Urban Mobility}, volume = {9}, journal = {Journal of Urban Mobility}, publisher = {Elsevier}, issn = {2667-0917}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20971}, year = {2026}, abstract = {The efficiency of demand responsive transport (DRT) services, such as ridepooling, has garnered significant attention across various (simulation) studies. However, a deeper look into the metrics employed to assess system performance exposes notable discrepancies in their utilization. Notably, certain indicators, such as the pooling rate, demonstrate a susceptibility to manipulation based on input parameters, potentially skewing results to give a more favorable impression of service performance. In this paper, we show that, under such circumstances, achieving a fair comparison between study outcomes and with traditional (public) transport modes becomes challenging. In light of these challenges, this study introduces a novel operational performance indicator: Operational System Efficiency (OSE). OSE is tailored to evaluate the operational efficiency of ridepooling systems in a holistic way. In particular, it combines important operational indicators such as detour factor and empty kilometers share, which are considered in numerous analyses. Hereby, OSE is fostering a more equitable assessment of service performance. We applied this methodology and calculated the indicators provided in other studies to two real-world trip datasets from ridepooling services in Berlin and M{\"u}nster, Germany, and compared the results. Distinct disparities emerge in comparison with conventional efficiency indicators. Consequently, the proposed OSE holds promise for stakeholders, including service providers, public transport companies, and regulatory authorities, as a valuable tool for determining the suitability of a ridepooling service for a given locale relative to other transport modalities, while also providing a transparent assessment of its efficiency.}, language = {en} } @article{HerkenhoffBroedelFrohme2024, author = {Herkenhoff, Marcos Edgar and Br{\"o}del, Oliver and Frohme, Marcus}, title = {Hops across Continents: Exploring How Terroir Transforms the Aromatic Profiles of Five Hop (Humulus lupulus) Varieties Grown in Their Countries of Origin and in Brazil}, series = {Plants}, volume = {13}, journal = {Plants}, number = {19}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-19470}, year = {2024}, abstract = {Humulus lupulus, or hops, is a vital ingredient in brewing, contributing bitterness, flavor, and aroma. The female plants produce strobiles rich in essential oils and acids, along with bioactive compounds like polyphenols, humulene, and myrcene, which offer health benefits. This study examined the aromatic profiles of five hop varieties grown in Brazil versus their countries of origin. Fifty grams of pelletized hops from each strain were collected and analyzed using HS-SPME/GC-MS to identify volatile compounds, followed by statistical analysis with PLS-DA and ANOVA. The study identified 330 volatile compounds and found significant aromatic differences among hops from different regions. For instance, H. Mittelfr{\"u}her grown in Brazil has a fruity and herbaceous profile, while the German-grown variety is more herbal and spicy. Similar variations were noted in the Magnum, Nugget, Saaz, and Sorachi Ace varieties. The findings underscore the impact of terroir on hop aromatic profiles, with Brazilian-grown hops displaying distinct profiles compared to their counterparts from their countries of origin, including variations in aromatic notes and α-acid content.}, language = {en} } @article{HerkenhoffBroedelDilarrietal.2026, author = {Herkenhoff, Marcos Edgar and Br{\"o}del, Oliver and Dilarri, Guilherme and Bajay, Miklos Maximiliano and Frohme, Marcus and Costamilan, Carlos Andr{\´e} da Veiga Lima Rosa}, title = {Characterization of Volatile Compounds in Amarillo, Ariana, Cascade, Centennial, and El Dorado Hops Using HS-SPME/GC-MS}, series = {Compounds}, volume = {6}, journal = {Compounds}, number = {1}, publisher = {MDPI}, issn = {2673-6918}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21029}, year = {2026}, abstract = {Humulus lupulus L. (hops) is essential in brewing due to its contributions to bitterness, flavor, and aroma. This study compared the volatile profiles of five commercially important hop varieties—Amarillo, Ariana, Cascade, Centennial, and El Dorado—grown in their main regions of origin (United States for Amarillo, Cascade, and El Dorado; Germany for Ariana; and Brazil for Centennial). Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME/GC-MS) enabled the identification of 312 volatile compounds, including monoterpenes (e.g., myrcene, linalool, geraniol), sesquiterpenes (e.g., humulene, caryophyllene), esters, alcohols, aldehydes, and ketones. Amarillo showed the highest myrcene content (22.61\% of the total volatile area), while Centennial was distinguished by elevated γ-muurolene (20.59\%), and El Dorado by the highest level of undecan-2-one (10.47\%), highlighting marked varietal differences in key aroma-active constituents. Multivariate, including principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA), clearly discriminated the five varieties: PC1 (41.04\% of the variance) separated samples enriched in fruity/floral monoterpenes and esters from those dominated by woody/resinous sesquiterpenes, whereas PC2 (25.93\% of the variance) reflected variation in medium-chain esters, ketones, and waxy compounds. These chemometric patterns demonstrate that both genetic background and growing region terroir strongly shape hop volatile composition and, consequently, aroma potential, providing brewers with objective criteria for selecting hop varieties to achieve specific sensory profiles in beer.}, language = {en} } @article{KsianzouVillringerGrytsenkoetal.2025, author = {Ksianzou, Viachaslau and Villringer, Claus and Grytsenko, Kostyantyn and Pekur, Demyd and Lytvyn, Peter and Sopinskyy, Mykola and Lebedyeva, Iryna and Niemczyk, Agata and Baranowska, Jolanta}, title = {Structural and Optical Anomalies in Thin Films Grown in a Magnetic Field by Electron-Assisted Vacuum Deposition of PTFE}, series = {Macromolecular Materials and Engineering}, volume = {310}, journal = {Macromolecular Materials and Engineering}, number = {3}, publisher = {Wiley}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-19712}, year = {2025}, abstract = {Polytetrafluoroethylene (PTFE) films are deposited in parallel and perpendicular magnetic fields (MF) by electron-enhanced vacuum deposition (EVD) and EVD + low-temperature plasma (LTP) methods. The structure, morphology, and nanomechanical properties of the films are studied by infrared spectroscopy (IRS), atomic force microscopy (AFM), and spectroscopic ellipsometry. The structure of the thicker films is closer to that of bulk PTFE than that of thin films. The films' crystallinity and surface roughness are higher than those deposited without MF. The birefringence of the refractive index (n) of the films deposited in the MF is inverse to the anisotropy of the n of the films deposited without MF. The hardness of the films is close to that of bulk PTFE.}, language = {en} } @article{SishodiaBenLtaiefScheeletal.2026, author = {Sishodia, Keshav and Ben Ltaief, Ltaief and Scheel, Niklas and F{\"o}ldes, Istv{\´a}n B. and Roos, Andreas Hult and Albrecht, Martin and Staněk, Maty{\´a}š and Jurkovičov{\´a}, Lucie and Hort, Ondrej and Nejdl, Jaroslav and Garc{\´i}a-Alfonso, Ernesto and Halberstadt, Nadine and Andreasson, Jakob and Klimešov{\´a}, Eva and Krikunova, Maria and Krishnan, Sivarama and Heidenreich, Andreas and Mudrich, Marcel}, title = {XUV fluorescence as a probe of interatomic coulombic decay of resonantly excited He nanodroplets}, series = {Scientific Reports}, volume = {16}, journal = {Scientific Reports}, number = {1}, publisher = {Springer Nature}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21050}, year = {2026}, abstract = {Superfluid He nanodroplets resonantly excited by extreme ultraviolet (XUV) pulses can relax via interatomic coulombic decay (ICD), generally considered an ultrafast process. Here, we introduce a novel approach to probe the dynamics of ICD in He nanodroplets over timescales ranging from femtoseconds to nanoseconds. Our method relies on detecting XUV fluorescence emitted from the nanodroplets as they are driven into a nanoplasma by subsequent intense infrared pulses. Nanoplasma ignition is facilitated by tunnel ionization of XUV-excited He∗ atoms attached to the droplets; it thus serves as a sensitive probe of their relaxation dynamics. The observed nanosecond-scale decay is attributed to ICD between pairs of He∗ atoms undergoing roaming motion on the droplet surface, as supported by quantum-mechanical and classical model calculations.}, language = {en} } @inproceedings{GrossKuhlStephanetal.2023, author = {Gross, Matthias and Kuhl, Thorsten and Stephan, Frank and Li, Xiangkun and Philipp, Sebastian and Grebinyk, Anna and Khachatryan, Vitali and Qian, Houjun and Aboulbanine, Zakaria and Amirkhanyan, Zohrab and Riemer, Felix and Oppelt, Anne and Krasilnikov, Mikhail}, title = {A beam line setup for flash radiation therapy with focused electron beams at the Pitz facility at DESY in Zeuthen: basic concept and dosimetry simulations}, series = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, booktitle = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, editor = {Istituto Nazionale Di Fisca Nucleare,}, publisher = {JACoW Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21132}, pages = {5000 -- 5003}, year = {2023}, abstract = {The aim of this work is to demonstrate the principal possibility to enhance the electron beam dose deposition in the depth of the sample for radiation therapy purposes. Trains of electron bunches of 22 MeV generated at PITZ are focused inside the sample using a dedicated fast deflector and a solenoid magnet. To explore the capabilities of the proposed setup, dose distributions are calculated for multiple electron bunches focused in a single point inside a water phantom. Electron beam focusing produces dose peaks with a tunable maximal dose depth which is interesting for healthy tissue sparing at the surface and enhancing treatment quality. The duration of the full bunch train is 1 ms. During this time interval, the FLASH effect could be efficiently triggered inside the irradiated target volume. Monte Carlo simulations based on the FLUKA code were performed to evaluate the depth dose curves distributions in a water phantom. Using the PITZ electron beam parameters, simulations have shown the possibility to produce a peak dose in water seven times higher than compared to the dose at the surface. Moreover, the RMS size homogeneous area around the maximal dose is approximately 25 mm.}, language = {en} } @inproceedings{KrasilnikovAboulbanineAdhikarietal.2023, author = {Krasilnikov, Mikhail and Aboulbanine, Zakaria and Adhikari, Gowri and Aftab, Namra and Asoyan, Aida and Davtyan, Hakob and Georgiev, Georgi and Good, James and Grebinyk, Anna and Gross, Matthias and Hoffmann, Andreas and Kongmon, Ekkachai and Li, Xiangkun and Lueangaramwong, Anusorn and Melkumyan, David and Mohanty, Sandeep and Niemczyk, Raffael and Oppelt, Anne and Qian, Houjun and Richard, Christopher and Schneidmiller, Evgeny and Stephan, Frank and Vashchenko, Grygorii}, title = {THz SASE FEL at PITZ: lasing at a wavelength of 100μm}, series = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, booktitle = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, editor = {Istituto Nazionale Di Fisca Nucleare,}, publisher = {JACoW Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21113}, pages = {3948 -- 3951}, year = {2023}, abstract = {Development of an accelerator-based tunable THz source prototype for pump-probe experiments at the European XFEL is ongoing at the Photo Injector Test facility at DESY in Zeuthen (PITZ). The proof-of-principle experiments on the THz SASE FEL are performed utilizing the LCLS-I undulator installed in the PITZ beamline. The first lasing at a center wavelength of 100 µm was observed in the summer of 2022. The lasing of the narrowband THz source was achieved using an electron beam with an energy of ~17 MeV and a bunch charge up to several nC. Optimization of beam transport and matching resulted in the measurement of THz radiation with a pulse energy of tens of µJ, measured with pyroelectric detectors. The THz FEL gain curves were measured by means of specially designed short coils along the undulator. The results of the first characterization of the THz source at PITZ will be presented.}, language = {en} }