TY  - JOUR
A1  - Biewendt, Marcel
A1  - Blaschke, Florian
A1  - Böhnert, Arno
T1  - An evaluation of corporate sustainability in context of the Jevons paradox
JF  - SocioEconomic Challenges
N2  - The successful implementation and continuous development of sustainable corporate-level solutions is a challenge. These are endeavours in which social, environmental, and financial aspects must be weighed against each other. They can prove difficult to handle and, in some cases, almost unrealistic. Concepts such as green controlling, IT, and manufacturing look promising and are constantly evolving. This paper aims to achieve a better understanding of the field of corporate sustainability (CS). It will evaluate the hypothesis by which Corporate Sustainability thrives, via being efficient, increasing the performance, and raising the value of the input of the enterprises to the resources used. In fact, Corporate Sustainability on the surface could seem to contradict the idea, which supports the understanding that it encourages the reduction of the heavy reliance on the use of natural resources, the overall environmental impact, and above all, their protection. To understand how the contradictory notion of CS came about, in this part of the paper, the emphasis is placed on providing useful insight to this regard. The first part of this paper summarizes various definitions, organizational theories, and measures used for CS and its derivatives like green controlling, IT, and manufacturing. Second, a case study is given that combines the aforementioned sustainability models. In addition to evaluating the hypothesis, the overarching objective of this paper is to demonstrate the use of green controlling, IT, and manufacturing in the corporate sector. Furthermore, this paper outlines the current challenges and possible directions for CS in the future.
KW  - rebound-effect
KW  - grey energy
KW  - efficiency side-effects
KW  - jevons paradox
KW  - corporate sustainability
Y1  - 2020
U6  - https://doi.org/10.21272/sec.4(3).46-65.2020
SN  - 2520-6214
VL  - 4
IS  - 3
SP  - 46
EP  - 65
PB  - ARMG Publishing
CY  - Sumy
ER  - 
TY  - JOUR
A1  - Engelmann, Ulrich M.
A1  - Simsek, Beril
A1  - Shalaby, Ahmed
A1  - Krause, Hans-Joachim
T1  - Key contributors to signal generation in frequency mixing magnetic detection (FMMD): an in silico study
JF  - Sensors
N2  - Frequency mixing magnetic detection (FMMD) is a sensitive and selective technique to detect magnetic nanoparticles (MNPs) serving as probes for binding biological targets. Its principle relies on the nonlinear magnetic relaxation dynamics of a particle ensemble interacting with a dual frequency external magnetic field. In order to increase its sensitivity, lower its limit of detection and overall improve its applicability in biosensing, matching combinations of external field parameters and internal particle properties are being sought to advance FMMD. In this study, we systematically probe the aforementioned interaction with coupled Néel–Brownian dynamic relaxation simulations to examine how key MNP properties as well as applied field parameters affect the frequency mixing signal generation. It is found that the core size of MNPs dominates their nonlinear magnetic response, with the strongest contributions from the largest particles. The drive field amplitude dominates the shape of the field-dependent response, whereas effective anisotropy and hydrodynamic size of the particles only weakly influence the signal generation in FMMD. For tailoring the MNP properties and parameters of the setup towards optimal FMMD signal generation, our findings suggest choosing large particles of core sizes dc > 25 nm nm with narrow size distributions (σ < 0.1) to minimize the required drive field amplitude. This allows potential improvements of FMMD as a stand-alone application, as well as advances in magnetic particle imaging, hyperthermia and magnetic immunoassays.
KW  - key performance indicators
KW  - magnetic biosensing
KW  - coupled Néel–Brownian relaxation dynamics
KW  - frequency mixing magnetic detection
KW  - magnetic relaxation
KW  - micromagnetic simulation
KW  - magnetic nanoparticles
Y1  - 2024
U6  - https://doi.org/10.3390/s24061945
SN  - 1424-8220
N1  - This article belongs to the Special Issue "Advances in Magnetic Sensors and Their Applications"
VL  - 24
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Horbach, Andreas
A1  - Staat, Manfred
T1  - Optical strain measurement for the modeling of surgical meshes and their porosity
JF  - Current Directions in Biomedical Engineering
N2  - The porosity of surgical meshes makes them flexible for large elastic deformation and establishes the healing conditions of good tissue in growth. The biomechanic modeling of orthotropic and compressible materials requires new materials models and simulstaneoaus fit of deformation in the load direction as well as trannsversely to to load. This nonlinear modeling can be achieved by an optical deformation measurement. At the same time the full field deformation measurement allows the dermination of the change of porosity with deformation. Also the socalled effective porosity, which has been defined to asses the tisssue interatcion with the mesh implants, can be determined from the global deformation of the surgical meshes.
Y1  - 2018
U6  - https://doi.org/10.1515/cdbme-2018-0045
SN  - 2364-5504
VL  - Band 4
IS  - 1
SP  - 181
EP  - 184
PB  - De Gruyter
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Ernhardt, Selina
A1  - Drumm, Christian
A1  - van Gog, Tamara
A1  - Brand-Gruwel, Saskia
A1  - Jarodzka, Halszka
T1  - Through the eyes of a programmer : a research project on how to foster programming education with eye-tracking technology
T2  - Tagungsband zur 32. AKWI-Jahrestagung vom 15.09.2019 bis 18.09.2019 an der Fachhochschule für Angewandte Wissenschaften Aachen
Y1  - 2019
SN  - 978-3-944330-62-4
SP  - 42
EP  - 47
PB  - Mana-Buch
CY  - Heide
ER  - 
TY  - JOUR
A1  - Grajewski, Matthias
A1  - Kleefeld, Andreas
T1  - Detecting and approximating decision boundaries in low-dimensional spaces
JF  - Numerical Algorithms
N2  - A method for detecting and approximating fault lines or surfaces, respectively, or decision curves in two and three dimensions with guaranteed accuracy is presented. Reformulated as a classification problem, our method starts from a set of scattered points along with the corresponding classification algorithm to construct a representation of a decision curve by points with prescribed maximal distance to the true decision curve. Hereby, our algorithm ensures that the representing point set covers the decision curve in its entire extent and features local refinement based on the geometric properties of the decision curve. We demonstrate applications of our method to problems related to the detection of faults, to multi-criteria decision aid and, in combination with Kirsch’s factorization method, to solving an inverse acoustic scattering problem. In all applications we considered in this work, our method requires significantly less pointwise classifications than previously employed algorithms.
KW  - MCDA
KW  - Inverse scattering problem
KW  - Fault approximation
KW  - Fault detection
Y1  - 2023
SN  - 1572-9265
N1  - Corresponding author: Matthias Grajewski
VL  - 93
IS  - 4
PB  - Springer Science+Business Media
CY  - Dordrecht
ER  - 
TY  - JOUR
A1  - Baringhaus, Ludwig
A1  - Gaigall, Daniel
T1  - Hotelling’s T² tests in paired and independent survey samples: An efficiency comparison
JF  - Journal of Multivariate Analysis
N2  - Hotelling’s T² tests in paired and independent survey samples are compared using the traditional asymptotic efficiency concepts of Hodges–Lehmann, Bahadur and Pitman, as well as through criteria based on the volumes of corresponding confidence regions. Conditions characterizing the superiority of a procedure are given in terms of population canonical correlation type coefficients. Statistical tests for checking these conditions are developed. Test statistics based on the eigenvalues of a symmetrized sample cross-covariance matrix are suggested, as well as test statistics based on sample canonical correlation type coefficients.
Y1  - 2017
U6  - https://doi.org/10.1016/j.jmva.2016.11.004
SN  - 0047-259X
VL  - 2017
IS  - 154
SP  - 177
EP  - 198
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Wang, Mao
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Thermodynamics of oxygen in the lead-antimony system at 1173 K
JF  - Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik
Y1  - 1987
SN  - 0044-2658
VL  - 40
IS  - 6
SP  - 316
EP  - 319
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Kearney, David W.
T1  - Survey of Thermal Energy Storage for Parabolic Trough Power Plants
JF  - Journal of Solar Energy Engineering
Y1  - 2002
U6  - https://doi.org/10.1115/1.1467601
SN  - 1528-8986 (Online)
SN  - 0199-6231 (Print)
VL  - 124
IS  - 2
SP  - 145
EP  - 152
ER  - 
TY  - CHAP
A1  - Uibel, Thomas
A1  - Blaß, Hans Joachim
T1  - A new method to determine suitable spacings and distances for self-tapping screws
T2  - Meeting ... / International Council for Research and Innovation in Building and Construction, Working Commission W18 - Timber Structures
N2  - The determination of spacing, edge and end distance requirements for self-tapping screws requires numerous and comprehensive insertion tests. Yet the results of such tests cannot be transferred to other types of screws or even to screws of different diameter because of differences in shape or geometry. To reduce the effort of insertion tests a new method was developed which allows the estimation of required spacings, distances and timber thickness.
Y1  - 2010
SN  - 1864-1784
N1  - Paper 43-21-2
VL  - 43
PB  - Lehrstuhl für Ingenieurholzbau und Baukonstruktionen
CY  - Karlsruhe
ER  - 
TY  - GEN
A1  - Roth, J.
A1  - Tippkötter, Nils
T1  - New Approach for Enzymatic Hydrolysis of Lignocellulose with Selective Diffusion Separation of the Monosaccharide Products
T2  - Chemie Ingenieur Technik
N2  - Enzymatic hydrolysis of lignocellulosic material plays an important role in the classical biorefinery approach. Apart from the pretreatment of the raw material, hydrolysis is the basis for the conversion of the cellulose and hemicellulose fraction into fermentable sugars. After hydrolysis, usually a solid-liquid separation takes place, in order to separate the residual plant material from the sugar-rich fraction, which can be subsequently used in a fermentation step. In order to factor out the separation step, the usage of in alginate immobilized crude cellulose fiber beads (CFBs) were evaluated. Pretreated cellulose fibers are incorporated in an alginate matrix together with the relevant enzymes. In doing so, sugars diffuse trough the alginate matrix, allowing a simplified delivery into the surrounding fluid. This again reduces product inhibition of the glucose on the enzyme catalysts. By means of standardized bead production the hydrolysis in lab scale was possible. First results show that liberation of glucose and xylose is possible, allowing a maximum total sugar yield of 75 %.
Y1  - 2016
U6  - https://doi.org/10.1002/cite.201650301
SN  - 0009-286X
SN  - 1522-2640 (eISSN)
N1  - ProcessNet-Jahrestagung 2016 und 32. DECHEMA-Jahrestagung der Biotechnologen 2016, 12. - 15. September 2016, Eurogress Aachen
VL  - 88
IS  - 9
SP  - 1237
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Lévesque, Mathieu
A1  - Siegwolf, Rolf
A1  - Eilmann, Britta
A1  - Saurer, Matthias
A1  - Rigling, Andreas
T1  - Increased water-use efficiency does not lead to enhanced tree growth under xeric and mesic conditions
JF  - New Phytologist
Y1  - 2014
U6  - https://doi.org/10.1111/nph.12772
SN  - 1469-8137 (Online)
SN  - 0028-646X (Print)
VL  - 203
IS  - 1
SP  - 94
EP  - 109
PB  - Wiley-Blackwell
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Kearney, David W.
A1  - Kelly, Bruce
A1  - Herrmann, Ulf
A1  - Cable, R.
A1  - Pacheco, J.
A1  - Mahoney, R.
A1  - Price, Henry
A1  - Blake, D.
A1  - Nava, P.
A1  - Potrovitza, N.
T1  - Engineering Aspects of a Molten Salt Heat Transfer Fluid in a Trough Solar Field
JF  - Energy : the international journal
Y1  - 2002
U6  - https://doi.org/10.1016/S0360-5442(03)00191-9
SN  - 0360-5442
N1  - SolarPACES 2002, Zürich, Switzerland, 4–6 September 2002
VL  - 29
IS  - 5-6 (Special Issue SolarPaces)
SP  - 861
EP  - 870
ER  - 
TY  - JOUR
A1  - Frohberg, Martin G.
A1  - Anik, Sabri
T1  - Thermodynamic relations between component activities and gas solubilities in binary metallic systems
JF  - Berichte der Bunsengesellschaft für physikalische Chemie
Y1  - 1985
SN  - 0940-483X
SN  - 0005-9021
VL  - 89
IS  - 2
SP  - 130
EP  - 134
ER  - 
TY  - CHAP
A1  - Lüpfert, E.
A1  - Herrmann, Ulf
A1  - Price, Henry
A1  - Zarza, E.
A1  - Kistener, R.
ED  - Ramos, C.
T1  - Towards Standard Performance Analysis for Parabolic Trough Collector Fields
T2  - 12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12
Y1  - 2004
SN  - 968-6114-18-1
PB  - Instituto de Investigaciones Electricas
CY  - [s.l.]
ER  - 
TY  - JOUR
A1  - Hafner, David
A1  - Demetz, Oliver
A1  - Weickert, Joachim
A1  - Reißel, Martin
T1  - Mathematical Foundations and Generalisations of the Census Transform for Robust Optic Flow Computation
JF  - Journal of Mathematical Imaging and Vision
Y1  - 2014
U6  - https://doi.org/10.1007/s10851-014-0529-9
SN  - 1573-7683 (Online)
N1  - Springer Online First (ohne Seitenang. und Heftzuteilung)
PB  - Springer
CY  - New York
ER  - 
TY  - CHAP
A1  - Herrmann, Ulf
A1  - Vorbrugg, O.
A1  - Nava, P.
T1  - Construction and Commissioning Process of the Andasol Solar Field
T2  - SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings
Y1  - 2009
SN  - 978-3-00-028755-8
PB  - Deutsches Zentrum für Luft- u. Raumfahrt
CY  - Stuttgart
ER  - 
TY  - CHAP
A1  - Finger, Felix
A1  - Braun, Carsten
A1  - Bil, Cees
T1  - The Impact of Electric Propulsion on the Performance of VTOL UAVs
T2  - Deutscher Luft- und Raumfahrtkongress 2017, DLRK , München
Y1  - 2017
ER  - 
TY  - JOUR
A1  - Helmig, Ilka
T1  - A few (hi)stories about french illustration
JF  - Slanted
Y1  - 2015
SN  - 1867-6510
IS  - 25 (Paris)
SP  - 210
EP  - 217
PB  - Slanted Publishers
CY  - Karlsruhe
ER  - 
TY  - CHAP
A1  - Zang, Zhigang
A1  - Hess, Holger
A1  - Ringbeck, Thorsten
A1  - Schwarte, Rudolf
ED  - Kamerman, Gary W.
T1  - Phase-lock techniques using new correlation receivers for TOF-laser ranging
T2  - Laser radar technology and applications VII : 3 - 4 April 2002, Orlando, USA. - (SPIE proceedings series ; 4723)
Y1  - 2002
SN  - 0-8194-4473-1
U6  - https://doi.org/10.1117/12.476402
SN  - 0038-7355
SN  - 0361-0748
SN  - 0277-786X
N1  - Laser Radar Technology and Applications <7, 2002, Orlando, FL>
SP  - 112
EP  - 120
PB  - SPIE, International Society for Optical Engineering
CY  - Bellingham, Wash.
ER  - 
TY  - JOUR
A1  - Damm, Marc André
A1  - Sauerborn, Markus
A1  - Fend, Thomas
A1  - Herrmann, Ulf
T1  - Optimisation of a urea selective catalytic reduction system with a coated ceramic mixing element
JF  - Journal of ceramic science and technology
Y1  - 2017
SN  - 2190-9385 (Print)
U6  - https://doi.org/10.4416/JCST2016-00056
SN  - 2190-9385 (Online)
VL  - 8
IS  - 1
SP  - 19
EP  - 24
PB  - Göller
CY  - Baden-Baden
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Investigations of the thermodynamics of oxygen and the determination of the miscibility gap in the system copper-oxygen-lead at 12000C
JF  - Zeitschrift für Metallkunde
Y1  - 1984
SN  - 0044-3093
VL  - 75
IS  - 8
SP  - 586
EP  - 589
ER  - 
TY  - INPR
A1  - Bornheim, Tobias
A1  - Grieger, Niklas
A1  - Blaneck, Patrick Gustav
A1  - Bialonski, Stephan
T1  - Preprint: Speaker attribution in German parliamentary debates with QLoRA-adapted large language models
T2  - Journal for Language Technology and Computational Linguistics
N2  - The growing body of political texts opens up new opportunities for rich insights into political dynamics and ideologies but also increases the workload for manual analysis. Automated speaker attribution, which detects who said what to whom in a speech event and is closely related to semantic role labeling, is an important processing step for computational text analysis. We study the potential of the large language model family Llama 2 to automate speaker attribution in German parliamentary debates from 2017-2021. We fine-tune Llama 2 with QLoRA, an efficient training strategy, and observe our approach to achieve competitive performance in the GermEval 2023 Shared Task On Speaker Attribution in German News Articles and Parliamentary Debates. Our results shed light on the capabilities of large language models in automating speaker attribution, revealing a promising avenue for computational analysis of political discourse and the development of semantic role labeling systems.
Y1  - 2023
U6  - https://doi.org/10.48550/arXiv.2309.09902
N1  - Veröffentlichte Version verfügbar unter: https://doi.org/10.21248/jlcl.37.2024.244
ER  - 
TY  - CHAP
A1  - Richter, Charlotte
A1  - Braunstein, Bjoern
A1  - Stäudle, Benjamin
A1  - Attias, Julia
A1  - Suess, Alexander
A1  - Weber, T.
A1  - Rittweger, Joern
A1  - Green, David A.
A1  - Albracht, Kirsten
T1  - In vivo fascicle length of the gastrocnemius muscle during walking in simulated martian gravity using two different body weight support devices
T2  - 23rd Annual Congress of the European College of Sport Science, Dublin, Irland
Y1  - 2018
ER  - 
TY  - CHAP
A1  - Finger, Felix
A1  - Braun, Carsten
A1  - Bil, Cees
T1  - A Review of Configuration Design for Distributed Propulsion Transitioning VTOL Aircraft
T2  - Asia-Pacific International Symposium on Aerospace Technology 2017, APISAT 2017, Seoul, Korea
Y1  - 2017
ER  - 
TY  - CHAP
A1  - Finger, Felix
A1  - Braun, Carsten
A1  - Bil, Cees
T1  - An Initial Sizing Methodology for Hybrid-Electric Light Aircraft
T2  - AIAA AVIATION Forum 2018 Aviation Technology, Integration, and Operations Conference, Atlanta, Georgia, June 25 - 29, 2018
Y1  - 2018
U6  - https://doi.org/10.2514/6.2018-4229
ER  - 
TY  - JOUR
A1  - Abdel-Latif, Lotfie Ahmed
A1  - Peeken, Heinz
A1  - Benner, Joachim
T1  - Thermohydrodynamic analysis of thrust-bearing with circular pads running on bubbly oil (BTHD-theory)
JF  - Journal of tribology
Y1  - 1985
SN  - 0742-4787
SN  - 1528-8897
VL  - 107
IS  - 4
SP  - 527
EP  - 537
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Kapoor, Madan Lal
A1  - Frohberg, Martin G.
T1  - Thermodynamic behaviour of oxygen in molten substitutional alloy solvents
JF  - Zeitschrift für Metallkunde
Y1  - 1983
SN  - 0044-3093
VL  - 74
IS  - 1
SP  - 53
EP  - 58
ER  - 
TY  - JOUR
A1  - Oehlenschläger, Katharina
A1  - Volkmar, Marianne
A1  - Stiefelmaier, Judith
A1  - Langsdorf, Alexander
A1  - Holtmann, Dirk
A1  - Tippkötter, Nils
A1  - Ulber, Roland
T1  - New insights into the influence of pre-culture on robust solvent production of C. acetobutylicum
JF  - Applied Microbiology and Biotechnology
N2  - Clostridia are known for their solvent production, especially the production of butanol. Concerning the projected depletion of fossil fuels, this is of great interest. The cultivation of clostridia is known to be challenging, and it is difficult to achieve reproducible results and robust processes. However, existing publications usually concentrate on the cultivation conditions of the main culture. In this paper, the influence of cryo-conservation and pre-culture on growth and solvent production in the resulting main cultivation are examined. A protocol was developed that leads to reproducible cultivations of Clostridium acetobutylicum. Detailed investigation of the cell conservation in cryo-cultures ensured reliable cell growth in the pre-culture. Moreover, a reason for the acid crash in the main culture was found, based on the cultivation conditions of the pre-culture. The critical parameter to avoid the acid crash and accomplish the shift to the solventogenesis of clostridia is the metabolic phase in which the cells of the pre-culture were at the time of inoculation of the main culture; this depends on the cultivation time of the pre-culture. Using cells from the exponential growth phase to inoculate the main culture leads to an acid crash. To achieve the solventogenic phase with butanol production, the inoculum should consist of older cells which are in the stationary growth phase. Considering these parameters, which affect the entire cultivation process, reproducible results and reliable solvent production are ensured.
KW  - Pre-culture
KW  - Metabolic shift
KW  - Acid crash
KW  - C. acetobutylicum
KW  - ABE
KW  - Butanol
Y1  - 2024
U6  - https://doi.org/10.1007/s00253-023-12981-8
SN  - 1432-0614
VL  - 108
PB  - Springer
CY  - Berlin, Heidelberg
ER  - 
TY  - CHAP
A1  - Schneider, Oliver
A1  - Al Hakim, Taher
A1  - Kayser, Peter
A1  - Digel, Ilya
ED  - Erni, Daniel
ED  - Fischerauer, Alice
ED  - Himmel, Jörg
ED  - Seeger, Thomas
ED  - Thelen, Klaus
T1  - Development and trials of a test chamber for ultrasound-assisted sampling of living cells from solid surfaces
T2  - 2nd YRA MedTech Symposium 2017 : June 8th - 9th / 2017 / Hochschule Ruhr-West
Y1  - 2017
SN  - 978-3-9814801-9-1
U6  - https://doi.org/10.17185/duepublico/43984
N1  - A young researchers track of the 7th IEEE Workshop & SENSORICA 2017
SP  - 96
EP  - 97
PB  - Universität Duisburg-Essen
CY  - Duisburg
ER  - 
TY  - CHAP
A1  - Birgel, Stefan
A1  - Leschinger, Tim
A1  - Wegmann, Kilian
A1  - Staat, Manfred
ED  - Erni, Daniel
ED  - Fischerauer, Alice
ED  - Himmel, Jörg
ED  - Seeger, Thomas
ED  - Thelen, Klaus
T1  - Calculation of muscle forces and joint reaction loads in shoulder area via an OpenSim based computer calculation
T2  - 2nd YRA MedTech Symposium 2017 : June 8th - 9th / 2017 / Hochschule Ruhr-West
Y1  - 2017
SN  - 978-3-9814801-9-1
U6  - https://doi.org/10.17185/duepublico/43984
N1  - A young researchers track of the 7th IEEE Workshop & SENSORICA 2017
N1  - In der Druckausgabe des Abstractbandes ist dieser Beitrag lose als Erratum beigefügt.
SP  - 116
EP  - 117
PB  - Universität Duisburg-Essen
CY  - Duisburg
ER  - 
TY  - CHAP
A1  - Kalbe, Jochen
A1  - Kuropka, Rolf
A1  - Meyer-Stork, L. Sebastian
A1  - Lauter, S. L.
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
ED  - Körner, Andrea
T1  - Identification of fine animal hair via DNA analysis
T2  - Proceedings of the 1st International Symposium on Specialty Animal Fibers : Aachen, October 26 - 27, 1987 ; [scientific, technological and economical aspects] . - (Schriftenreihe des Deutschen Wollforschungsinstitutes an der Technischen Hochschule Aachen e.V. ; 103)
Y1  - 1988
SN  - 0930-3723
SP  - 221
EP  - 227
PB  - Dt. Wollforschungsinst.
CY  - Aachen
ER  - 
TY  - BOOK
A1  - Staat, Manfred
A1  - Erni, Daniel
T1  - Symposium Proceedings; 3rd YRA MedTech Symposium 2019: May 24 / 2019 / FH Aachen
Y1  - 2019
SN  - 978-3-940402-22-6
U6  - https://doi.org/10.17185/duepublico/48750
PB  - Universität Duisburg-Essen
CY  - Duisburg
ER  - 
TY  - JOUR
A1  - Krüger, Götz
A1  - Grötzinger, Joachim
A1  - Berndt, Heinz
T1  - Enantiomeric resolution of amino acid derivatives on chiral stationary phases by high-performance liquid chromatography
JF  - Journal of Chromatography A
Y1  - 1987
U6  - https://doi.org/10.1016/S0021-9673(01)85005-6
SN  - 0021-9673
VL  - 1987
IS  - 397
SP  - 223
EP  - 232
ER  - 
TY  - CHAP
A1  - Ferrein, Alexander
A1  - Kallweit, Stephan
A1  - Lautermann, Mark
T1  - Towards an autonomous pilot system for a tunnel boring machine
T2  - 5th Robotics and Mechatronics Conference of South Africa (ROBMECH) : 26 - 27 November 2012 ; CSIR International Conference Centre Gauteng South Africa
Y1  - 2012
SN  - 978-1-4673-5183-6
N1  - Robotics and Mechatronics Conference of South Africa <5, 2012, Johannesburg> ; ROBOMECH <5, 2012, Johannesburg>
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Fonti, Patrick
A1  - Eilmann, Britta
A1  - García-González, Ignacio
A1  - von Arx, Georg
T1  - Expeditious building of ring-porous earlywood vessel chronologies without loosing signal information
JF  - Trees : structure and function
Y1  - 2009
U6  - https://doi.org/10.1007/s00468-008-0310-z
SN  - 0931-1890 (Print)
SN  - 1432-2285 (Online)
VL  - 23
IS  - 3
SP  - 665
EP  - 671
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Herrmann, Ulf
A1  - Lippke, F.
T1  - The influence of transients on the design of DSG solar fields
JF  - Journal de Physique IV : proceedings
Y1  - 1999
SN  - 2-86883-402-7
U6  - https://doi.org/10.1051/jp4:1999377
SN  - 1764-7177 (Online)
SN  - 1155-4339 (Print)
VL  - 9
IS  - PR3
SP  - 489
EP  - 494
ER  - 
TY  - JOUR
A1  - Wang, Mao
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Experiments on the electrochemical determination of the sulphur activities in the system copper-silver at 1200°C
JF  - Zeitschrift für Metallkunde
Y1  - 1988
SN  - 0044-3093
VL  - 79
IS  - 5
SP  - 336
EP  - 339
ER  - 
TY  - CHAP
A1  - Magnor, D.
A1  - Soltau, N.
A1  - Bragard, Michael
A1  - Schmiegel, A.
A1  - De Doncker, R. W.
A1  - Sauer, D. U.
ED  - de Santi, Giovanni Frederigo
T1  - Analysis of the model dynamics for the battery and battery converter in a grid-connected 5 kW photovoltaic system
T2  - Proceedings / 25th European Photovoltaic Solar Energy Conference and Exhibition ; 5th World Conference on Photovoltaic Energy Conversion ; Feria Valencia, Convention & Exhibition Centre, Valencia, Spain, conference 6 - 10 September 2010, exhibition 6 - 9 September 2010 ; Joint World Conference of: 25th European Photovoltic Solar Energy Conference and Exhibition, 36th US IEEE Photovoltaic Specialists Conference, 20th Asia/Pacific PV Science and Engineering Conference
Y1  - 2010
SN  - 3-936338-26-4  (DVD-ROM)
N1  - EU PVSEC WCPEC
PB  - WIP Renewable Energies
CY  - [München]
ER  - 
TY  - CHAP
A1  - Fuchs, Britta
A1  - Ritz, Thomas
A1  - Strauch, Jakob
ED  - Obaidat, Mohammad S.
T1  - Usability of mobile applications : dissemination of usability engineering in small and medium enterprises
T2  - Proceedings of the International Conference on Data Communication Networking, e-Business and Optical Communication Systems : Rome, Italy, 24 - 27 July, 2012 ; [integrated in the ICETE (International Conference on e-Business and Telecommunications)]
Y1  - 2012
SN  - 978-989-8565-23-5
N1  - Nebentitel: DCNET; ICE-B; OPTICS
SP  - 272
EP  - 277
PB  - SciTePress
CY  - [Lissabon]
ER  - 
TY  - JOUR
A1  - Eilmann, Britta
A1  - Zweifel, Roman
A1  - Buchmann, Nina
A1  - Graf Pannatier, Elisabeth
A1  - Rigling, Andreas
T1  - Drought alters timing, quantity, and quality of wood formation in Scots pine
JF  - Journal of Experimental Botany
Y1  - 2011
U6  - https://doi.org/10.1093/jxb/erq443
SN  - 1460-2431 (Online)
SN  - 0022-0957 (Print)
VL  - 62
IS  - 8
SP  - 2763
EP  - 2771
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
A1  - Kapoor, Madan Lal
T1  - Prediction of thermodynamic properties of oxygen in binary metallic solvents
JF  - Zeitschrift für Metallkunde
Y1  - 1983
SN  - 0044-3093
VL  - 74
IS  - 6
SP  - 372
EP  - 375
ER  - 
TY  - JOUR
A1  - Vahidpour, Farnoosh
A1  - Alghazali, Yousef
A1  - Akca, Sevilay
A1  - Hommes, Gregor
A1  - Schöning, Michael Josef
T1  - An Enzyme-Based Interdigitated Electrode-Type Biosensor for Detecting Low Concentrations of H₂O₂ Vapor/Aerosol
JF  - Chemosensors
N2  - This work introduces a novel method for the detection of H₂O₂ vapor/aerosol of low concentrations, which is mainly applied in the sterilization of equipment in medical industry. Interdigitated electrode (IDE) structures have been fabricated by means of microfabrication techniques. A differential setup of IDEs was prepared, containing an active sensor element (active IDE) and a passive sensor element (passive IDE), where the former was immobilized with an enzymatic membrane of horseradish peroxidase that is selective towards H₂O₂. Changes in the IDEs’ capacitance values (active sensor element versus passive sensor element) under H₂O₂ vapor/aerosol atmosphere proved the detection in the concentration range up to 630 ppm with a fast response time (<60 s). The influence of relative humidity was also tested with regard to the sensor signal, showing no cross-sensitivity. The repeatability assessment of the IDE biosensors confirmed their stable capacitive signal in eight subsequent cycles of exposure to H₂O₂ vapor/aerosol. Room-temperature detection of H₂O₂ vapor/aerosol with such miniaturized biosensors will allow a future three-dimensional, flexible mapping of aseptic chambers and help to evaluate sterilization assurance in medical industry.
Y1  - 2022
U6  - https://doi.org/10.3390/chemosensors10060202
SN  - 2227-9040
N1  - This article belongs to the Special Issue "Bioinspired Chemical Sensors and Micro-Nano Devices"
VL  - 10
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - CHAP
A1  - Gebhardt, Andreas
A1  - Ritz, Thomas
A1  - Siekmann, Kirsten
A1  - Wallenborn, Ramona
ED  - Demmer, Axel
T1  - Additive manufacturing businesses in the process chain of individualized mass products
T2  - DDMC 2014 : Proceedings of the Fraunhofer Direct Digital Manufacturing Conference
Y1  - 2014
SN  - 978-3-8396-9128-1 (E-Book)
PB  - Fraunhofer
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Bragard, Michael
A1  - Soltau, N.
A1  - Thomas, S.
A1  - De Doncker, R. W.
T1  - The balance of renewable sources and user demands in grids : power electronics for modular battery energy storage systems
JF  - IEEE transactions on power electronics
N2  - The continuously growing amount of renewable sources starts compromising the stability of electrical grids. Contradictory to fossil fuel power plants, energy production of wind and photovoltaic (PV) energy is fluctuating. Although predictions have significantly improved, an outage of multi-MW offshore wind farms poses a challenging problem. One solution could be the integration of storage systems in the grid. After a short overview, this paper focuses on two exemplary battery storage systems, including the required power electronics. The grid integration, as well as the optimal usage of volatile energy reserves, is presented for a 5- kW PV system for home application, as well as for a 100- MW medium-voltage system, intended for wind farm usage. The efficiency and cost of topologies are investigated as a key parameter for large-scale integration of renewable power at medium- and low-voltage.
Y1  - 2010
U6  - https://doi.org/10.1109/TPEL.2010.2085455
SN  - 0885-8993
VL  - 25
IS  - 12
SP  - 3049
EP  - 3056
PB  - IEEE
CY  - New York
ER  - 
TY  - CHAP
A1  - Ringbeck, Thorsten
A1  - Schwarte, Rudolf
A1  - Buxbaum, Bernd
A1  - Hess, Rudolf
ED  - Tang, Suning
T1  - Optical GMSK modem for infrared wireless communication based on a new receiver principle in CMOS technology
T2  - Optoelectronic interconnects VIII : 25 - 26 January 2001, San Jose, USA. - (Proceedings of SPIE ; 4292)
Y1  - 2001
SN  - 0-8194-3970-3
SN  - 0038-7355
SN  - 0361-0748
SN  - 0277-786X
N1  - Optoelectronic Interconnects <8, 2001, San Jose, Calif.>
SP  - 25
EP  - 34
PB  - SPIE
CY  - Bellingham, Wash.
ER  - 
TY  - CHAP
A1  - Gaigall, Daniel
T1  - On Consistent Hypothesis Testing In General Hilbert Spaces
T2  - Proceedings of the 4th International Conference on Statistics: Theory and Applications (ICSTA’22)
N2  - Inference on the basis of high-dimensional and functional data are two topics which are discussed frequently in the current statistical literature. A possibility to include both topics in a single approach is working on a very general space for the underlying observations, such as a separable Hilbert space. We propose a general method for consistently hypothesis testing on the basis of random variables with values in separable Hilbert spaces. We avoid concerns with the curse of dimensionality due to a projection idea. We apply well-known test statistics from nonparametric inference to the projected data and integrate over all projections from a specific set and with respect to suitable probability measures. In contrast to classical methods, which are applicable for real-valued random variables or random vectors of dimensions lower than the sample size, the tests can be applied to random vectors of dimensions larger than the sample size or even to functional and high-dimensional data. In general, resampling procedures such as bootstrap or permutation are suitable to determine critical values. The idea can be extended to the case of incomplete observations. Moreover, we develop an efficient algorithm for implementing the method. Examples are given for testing goodness-of-fit in a one-sample situation in [1] or for testing marginal homogeneity on the basis of a paired sample in [2]. Here, the test statistics in use can be seen as generalizations of the well-known Cramérvon-Mises test statistics in the one-sample and two-samples case. The treatment of other testing problems is possible as well. By using the theory of U-statistics, for instance, asymptotic null distributions of the test statistics are obtained as the sample size tends to infinity. Standard continuity assumptions ensure the asymptotic exactness of the tests under the null hypothesis and that the tests detect any alternative in the limit. Simulation studies demonstrate size and power of the tests in the finite sample case, confirm the theoretical findings, and are used for the comparison with concurring procedures. A possible application of the general approach is inference for stock market returns, also in high data frequencies. In the field of empirical finance, statistical inference of stock market prices usually takes place on the basis of related log-returns as data. In the classical models for stock prices, i.e., the exponential Lévy model, Black-Scholes model, and Merton model, properties such as independence and stationarity of the increments ensure an independent and identically structure of the data. Specific trends during certain periods of the stock price processes can cause complications in this regard. In fact, our approach can compensate those effects by the treatment of the log-returns as random vectors or even as functional data.
Y1  - 2022
U6  - https://doi.org/10.11159/icsta22.157
N1  - 4th International Conference on Statistics: Theory and Applications (ICSTA’22), Prague, Czech Republic – July 28- 30
SP  - Paper No. 157
PB  - Avestia Publishing
CY  - Orléans, Kanada
ER  - 
TY  - JOUR
A1  - Nokihara, Kiyoshi
A1  - Berndt, Heinz
T1  - Synthesis of hapten–polypeptide conjugates as antigen models for the N-terminal region of the α-2-chain of rabbit skin collagen
JF  - Journal of the Royal Society of Chemistry: Perkin Transactions 1
N2  - Synthesis of derivatives of the peptide sequence L-pyroglutamyl-L-phenylalanyl-L-aspartyl-glycyl-L-lysyl-glycyl-glycyl-glycine as the antigenic determinant representing the N-terminal non-helical region of the α-2-chain of rabbit skin collagen, and conjugation to two different polypeptide carriers, are described.
Y1  - 1978
U6  - https://doi.org/10.1039/P19780000260
SN  - 1364-5463
SN  - 0300-922X
SN  - 1470-4358
VL  - 1978
IS  - 3
SP  - 260
EP  - 263
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - CHAP
A1  - Kroggel, Matthias
A1  - Berndt, Heinz
ED  - Ragnarsson, Ulf
T1  - The 0-hydroxiphenyloxicarbonyl-group a new base labile amine protecting group
T2  - Peptides 1984 : Proceedings of the 18th European Peptide Symposium Djurönäset, Sweden, June 10 - 15, 1984
Y1  - 1984
SN  - 91-22-00715-6
SP  - 81
EP  - 83
PB  - Almquist & Wiksell
CY  - Stockholm
ER  - 
TY  - CHAP
A1  - Helmig, Ilka
ED  - Klanten, Robert
T1  - Tristan und Isolde, Samson und Dalila, Capriccio : 3D illustration for posters of Cologne Opera
T2  - Papercraft [1] : design and art with paper
KW  - Papierkunst
Y1  - 2009
SN  - 978-3-89955-251-5
SP  - 202
PB  - Gestalten Verlag
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Scheer, Nico
A1  - Kapelyukh, Yury
A1  - Rode, Anja
A1  - Buechel, Sandra
A1  - Wolf, C. Roland
T1  - Generation and characterization of novel cytochrome P450 Cyp2c gene cluster knockout and CYP2C9 humanized mouse lines
JF  - Molecular Pharmacology
N2  - Compared with rodents and many other animal species, the human cytochrome P450 (P450) Cyp2c gene cluster varies significantly in the multiplicity of functional genes and in the substrate specificity of its enzymes. As a consequence, the use of wild-type animal models to predict the role of human CYP2C enzymes in drug metabolism and drug-drug interactions is limited. Within the human CYP2C cluster CYP2C9 is of particular importance, because it is one of the most abundant P450 enzymes in human liver, and it is involved in the metabolism of a wide variety of important drugs and environmental chemicals. To investigate the in vivo functions of cytochrome P450 Cyp2c genes and to establish a model for studying the functions of CYP2C9 in vivo, we have generated a mouse model with a deletion of the murine Cyp2c gene cluster and a corresponding humanized model expressing CYP2C9 specifically in the liver. Despite the high number of functional genes in the mouse Cyp2c cluster and the reported roles of some of these proteins in different biological processes, mice deleted for Cyp2c genes were viable and fertile but showed certain phenotypic alterations in the liver. The expression of CYP2C9 in the liver also resulted in viable animals active in the metabolism and disposition of a number of CYP2C9 substrates. These mouse lines provide a powerful tool for studying the role of Cyp2c genes and of CYP2C9 in particular in drug disposition and as a factor in drug-drug interaction.
Y1  - 2012
U6  - https://doi.org/10.1124/mol.112.080036
SN  - 1521-0111
VL  - 82
IS  - 6
SP  - 1022
EP  - 1029
PB  - ASPET
CY  - Bethesda, Md.
ER  -