TY - JOUR A1 - Jildeh, Zaid B. A1 - Oberländer, Jan A1 - Kirchner, Patrick A1 - Keusgen, Michael A1 - Wagner, Patrick H. A1 - Schöning, Michael Josef T1 - Experimental and Numerical Analyzes of a Sensor Based on Interdigitated Electrodes for Studying Microbiological Alterations JF - physica status solidi (a): applications and materials science N2 - In this work, a cell-based biosensor to evaluate the sterilization efficacy of hydrogen peroxide vapor sterilization processes is characterized. The transducer of the biosensor is based on interdigitated gold electrodes fabricated on an inert glass substrate. Impedance spectroscopy is applied to evaluate the sensor behavior and the alteration of test microorganisms due to the sterilization process. These alterations are related to changes in relative permittivity and electrical conductivity of the bacterial spores. Sensor measurements are conducted with and without bacterial spores (Bacillus atrophaeus), as well as after an industrial sterilization protocol. Equivalent two-dimensional numerical models based on finite element method of the periodic finger structures of the interdigitated gold electrodes are designed and validated using COMSOL® Multiphysics software by the application of known dielectric properties. The validated models are used to compute the electrical properties at different sensor states (blank, loaded with spores, and after sterilization). As a final result, we will derive and tabulate the frequency-dependent electrical parameters of the spore layer using a novel model that combines experimental data with numerical optimization techniques. Y1 - 2018 U6 - https://doi.org/10.1002/pssa.201700920 SN - 1862-6319 VL - 215 IS - 15 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Böhnert, Arno A1 - Blaschke, Florian A1 - Biewendt, Marcel T1 - Impact of sustainability on the strategic direction of luxury companies JF - European Journal of Marketing and Economics N2 - Today’s society is undergoing a paradigm shift driven by the megatrend of sustainability. This undeniably affects all areas of Western life. This paper aims to find out how the luxury industry is dealing with this change and what adjustments are made by the companies. For this purpose, interviews were conducted with managers from the luxury industry, in which they were asked about specific measures taken by their companies as well as trends in the industry. In a subsequent evaluation, the trends in the luxury industry were summarized for the areas of ecological, social, and economic sustainability. It was found that the area of environmental sustainability is significantly more focused than the other sub-areas. Furthermore, the need for a customer survey to validate the industry-based measures was identified. KW - Operations KW - Brands KW - Luxury KW - Change Y1 - 2022 SN - 2601-8659 VL - 6 IS - 1 SP - 70 EP - 85 PB - Revistia CY - London ER - TY - JOUR A1 - Ditzhaus, Marc A1 - Gaigall, Daniel T1 - Testing marginal homogeneity in Hilbert spaces with applications to stock market returns JF - Test N2 - This paper considers a paired data framework and discusses the question of marginal homogeneity of bivariate high-dimensional or functional data. The related testing problem can be endowed into a more general setting for paired random variables taking values in a general Hilbert space. To address this problem, a Cramér–von-Mises type test statistic is applied and a bootstrap procedure is suggested to obtain critical values and finally a consistent test. The desired properties of a bootstrap test can be derived that are asymptotic exactness under the null hypothesis and consistency under alternatives. Simulations show the quality of the test in the finite sample case. A possible application is the comparison of two possibly dependent stock market returns based on functional data. The approach is demonstrated based on historical data for different stock market indices. Y1 - 2022 U6 - https://doi.org/10.1007/s11749-022-00802-5 SN - 1863-8260 VL - 2022 IS - 31 SP - 749 EP - 770 PB - Springer ER - TY - CHAP A1 - Funke, Harald A1 - Haj Ayed, A. A1 - Kusterer, K. A1 - Keinz, Jan A1 - Kazari, M. A1 - Kitajima, J. A1 - Horikawa, A. A1 - Okada, K. T1 - Numerical Study on Increased Energy Density for the DLN Micromix Hydrogen Combustion Principle T2 - Combustion, Fuels and Emissions (ASME Turbo Expo 2014: Turbine Technical Conference and Exposition : Düsseldorf, Germany, June 16–20, 2014 ; Vol. 4A) Y1 - 2014 SN - 978-0-7918-4568-4 N1 - Paper No. GT2014-25848 SP - V04AT04A057 PB - ASME CY - New York, N.Y. ER - TY - CHAP A1 - Hagebeuker, Bianca A1 - Ringbeck, Thorsten A1 - Frydlewicz, Paul A1 - Jesorsky, Oliver A1 - Sünkel, Thomas ED - Grote, Caspar T1 - PMD-Sensoren als Schlüsselkomponenten für die mehrdimensionale Umfelderfassung des Fahrzeuginnenraums T2 - Begleittexte zum Entwicklerforum KFZ-Elektronik & FlexRay Solution Day : 15.Mai 2007, Ludwigsburg Y1 - 2007 N1 - Entwicklerforum Kfz-Elektronik <2007, Ludwigsburg> ; FlexRay Solution Day <2007, Ludwigsburg> SP - 287 EP - 296 PB - WEKA-Fachzeitschr.-Verl. CY - Poing ER - TY - CHAP A1 - Grothof, M. A1 - Schwarte, Rudolf A1 - Buxbaum, Bernd A1 - Ringbeck, Thorsten ED - Wagner, Elmar T1 - Product monitoring with MSM-PMD-Array T2 - Proceedings / OPTO 2002 : an event of the Association for Sensor Technology AMA ; 14 - 16 May 2002, Exhibition Centre Erfurt, Germany / International Conference Optoelectronics, Optical Sensors & Measuring Techniques Y1 - 2002 N1 - OPTO <5, 2002, Erfurt> ; International Conference Optoelectronics, Optical Sensors & Measuring Techniques SP - 41 EP - 47 PB - AMA Service GmbH CY - Wunsdorf ER - TY - CHAP A1 - Buxbaum, Bernd A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten A1 - Grothof, Markus A1 - Sluiter, A. A1 - Frey, Jochen A1 - Hildebrand, M. A1 - David, Klaus ED - Korevaar, Eric John T1 - Wireless LAN based on optical CDMA using a new high-speed correlation receiver (MSM-PMD) T2 - Optical wireless communications IV : 21-22 August, 2001, Denver, USA. - (SPIE proceedings series ; 4530) Y1 - 2001 SN - 0-8194-4254-2 U6 - https://doi.org/10.1117/12.449808 N1 - Optical Wireless Communications Conference <4, 2001, Denver, Colo.> SP - 168 EP - 178 PB - SPIE CY - Bellingham, Wash. ER - TY - JOUR A1 - Eilmann, Britta A1 - de Vries, Sven M. G. A1 - den Ouden, Jan A1 - Mohren, Godefridus M. J. A1 - Sauren, Pascal A1 - Sass-Klaassen, Ute G. W. T1 - Origin matters! Difference in drought tolerance and productivity of coastal Douglas-fir (Pseudotsuga menziesii (Mirb.)) provenances JF - Forest Ecology and Management Y1 - 2013 U6 - https://doi.org/doi:10.1016/j.foreco.2013.03.031 SN - 1872-7042 (Online) SN - 0378-1127 (Print) VL - 2013 IS - 302 SP - 133 EP - 143 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Kötter, Jens A1 - Decker, Stefan A1 - Detzler, Raphael A1 - Schäfer, Jochen A1 - Schmitz, Mark A1 - Herrmann, Ulf T1 - Cost Reduction of Solar Fields with HelioTrough Collector Y1 - 2012 N1 - Concentration Solar Power and Chemical Energy Systemes : SolarPaces 2012, September 11 14 2002, Marrakesh, Morroco PB - FLAGSOL CY - Köln ER - TY - JOUR A1 - Zhantlessova, Sirina A1 - Savitskaya, Irina A1 - Kistaubayeva, Aida A1 - Ignatova, Ludmila A1 - Talipova, Aizhan A1 - Pogrebnjak, Alexander A1 - Digel, Ilya T1 - Advanced “Green” prebiotic composite of bacterial cellulose/pullulan based on synthetic biology-powered microbial coculture strategy JF - Polymers N2 - Bacterial cellulose (BC) is a biopolymer produced by different microorganisms, but in biotechnological practice, Komagataeibacter xylinus is used. The micro- and nanofibrillar structure of BC, which forms many different-sized pores, creates prerequisites for the introduction of other polymers into it, including those synthesized by other microorganisms. The study aims to develop a cocultivation system of BC and prebiotic producers to obtain BC-based composite material with prebiotic activity. In this study, pullulan (PUL) was found to stimulate the growth of the probiotic strain Lactobacillus rhamnosus GG better than the other microbial polysaccharides gellan and xanthan. BC/PUL biocomposite with prebiotic properties was obtained by cocultivation of Komagataeibacter xylinus and Aureobasidium pullulans, BC and PUL producers respectively, on molasses medium. The inclusion of PUL in BC is proved gravimetrically by scanning electron microscopy and by Fourier transformed infrared spectroscopy. Cocultivation demonstrated a composite effect on the aggregation and binding of BC fibers, which led to a significant improvement in mechanical properties. The developed approach for “grafting” of prebiotic activity on BC allows preparation of environmentally friendly composites of better quality. KW - coculture KW - pullulan KW - exopolysaccharides KW - prebiotic KW - bacterial cellulose Y1 - 2022 U6 - https://doi.org/10.3390/polym14153224 SN - 2073-4360 N1 - This article belongs to the Special Issue "Cellulose Based Composites" VL - 14 IS - 15 PB - MDPI CY - Basel ER -