TY  - JOUR
A1  - Reifenberg, Dirk
A1  - Jörissen, Jörg
A1  - Peters, David
T1  - Ausgewählte Ergebnisse einer kooperativen Studie zu Hochschulwechsel und Studienabbruch
JF  - Qualität in der Wissenschaft (QiW)
Y1  - 2015
SN  - 1860-3041
VL  - 9
IS  - 3+4
SP  - 99
EP  - 105
PB  - UVW Universitätsverlag Webler
CY  - Bielefeld
ER  - 
TY  - JOUR
A1  - Paulßen, Elisabeth
A1  - Hoehr, Cornelia
A1  - Hou, Xinchi
A1  - Hanemaayer, Victoire
A1  - Zeisler, Stefan
A1  - Adam, Michael J.
A1  - Ruth, Thomas J.
A1  - Celler, Anna
A1  - Buckley, Ken
A1  - Benard, Francois
A1  - Schaffer, Paul
T1  - Production of Y-86 and other radiometals for research purposes using a solution target system
JF  - Nuclear medicine and biology
Y1  - 2015
U6  - https://doi.org/10.1016/j.nucmedbio.2015.06.005
SN  - 1872-9614
VL  - 42
IS  - 11
SP  - 842
EP  - 849
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Matcha, Heike
ED  - Martens, B.
T1  - Parametrized Systems: Conceiving of Buildings as Assemblies of Varied Parts
JF  - Real Time - Proceedings of the 33rd eCAADe Conference - Volume 2, Vienna University of Technology, Vienna, Austria, 16-18 September 2015
Y1  - 2015
SP  - 143
EP  - 148
ER  - 
TY  - JOUR
A1  - Pietsch, Wolfram
T1  - Augmenting voice of the customer analysis by analysis of belief
JF  - QFD-Forum
Y1  - 2015
SN  - 1431-6951
IS  - 30
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Pöttgen, Philipp
A1  - Ederer, Thorsten
A1  - Altherr, Lena
A1  - Pelz, Peter F.
T1  - Developing a control strategy for booster stations under uncertain load
JF  - Applied Mechanics and Materials
N2  - Booster stations can fulfill a varying pressure demand with high energy-efficiency, because individual pumps can be deactivated at smaller loads. Although this is a seemingly simple approach, it is not easy to decide precisely when to activate or deactivate pumps. Contemporary activation controls derive the switching points from the current volume flow through the system. However, it is not measured directly for various reasons. Instead, the controller estimates the flow based on other system properties. This causes further uncertainty for the switching decision. In this paper, we present a method to find a robust, yet energy-efficient activation strategy.
KW  - Technical Operations Research (TOR)
KW  - Booster Station
KW  - Pump System
KW  - Discrete Optimization
Y1  - 2015
SN  - 1662-7482
U6  - https://doi.org/10.4028/www.scientific.net/AMM.807.241
N1  - Ebenfalls weltweit einsehbar unter:
http://wl.fst.tu-darmstadt.de/wl/publications/paper_151123_SFB805_
ICUME_Developing_a_Control_Strategy_for_Booster_Stations_under_Uncertain_Load_poettgen_ederer_pelz_altherr.pdf
VL  - 807
IS  - 807
SP  - 241
EP  - 246
PB  - Trans Tech Publications
CY  - Bäch
ER  - 
TY  - JOUR
A1  - Pöttgen, Philipp
A1  - Ederer, Thorsten
A1  - Altherr, Lena
A1  - Lorenz, Ulf
A1  - Pelz, Peter F.
T1  - Examination and optimization of a heating circuit for energy-efficient buildings
JF  - Energy Technology
N2  - The conference center darmstadtium in Darmstadt is a prominent example of energy efficient buildings. Its heating system consists of different source and consumer circuits connected by a Zortström reservoir. Our goal was to reduce the energy costs of the system as much as possible. Therefore, we analyzed its supply circuits. The first step towards optimization is a complete examination of the system: 1) Compilation of an object list for the system, 2) collection of the characteristic curves of the components, and 3) measurement of the load profiles of the heat and volume-flow demand. Instead of modifying the system manually and testing the solution by simulation, the second step was the creation of a global optimization program. The objective was to minimize the total energy costs for one year. We compare two different topologies and show opportunities for significant savings.
KW  - energy transfer
KW  - heating system
KW  - programming
KW  - system optimization
KW  - technical operations research
Y1  - 2015
SN  - 2194-4296
U6  - https://doi.org/10.1002/ente.201500252
VL  - 4
IS  - 1
SP  - 136
EP  - 144
PB  - WILEY-VCH Verlag
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Altherr, Lena
A1  - Ederer, Thorsten
A1  - Pöttgen, Philipp
A1  - Lorenz, Ulf
A1  - Pelz, Peter F.
ED  - Pelz, Peter F.
ED  - Groche, Peter
T1  - Multicriterial optimization of technical systems considering multiple load and availability scenarios
JF  - Applied Mechanics and Materials
N2  - Cheap does not imply cost-effective -- this is rule number one of zeitgeisty system design. The initial investment accounts only for a small portion of the lifecycle costs of a technical system. In fluid systems, about ninety percent of the total costs are caused by other factors like power consumption and maintenance. With modern optimization methods, it is already possible to plan an optimal technical system considering multiple objectives. In this paper, we focus on an often neglected contribution to the lifecycle costs: downtime costs due to spontaneous failures. Consequently, availability becomes an issue.
KW  - sustainability
KW  - availability
KW  - energy efficiency
KW  - mixed-integer linear programming
KW  - system synthesis
Y1  - 2015
SN  - 1660-9336
U6  - https://doi.org/10.4028/www.scientific.net/AMM.807.247
VL  - 807
SP  - 247
EP  - 256
ER  - 
TY  - JOUR
A1  - Czarnecki, Christian
T1  - Moderne Telekommunikationsprodukte erfordern standardisierte 
Geschäftsprozesse
JF  - Wirtschaft und Wissenschaft
Y1  - 2015
IS  - 2
SP  - 7
EP  - 7
PB  - Deutsche Telekom AG. Fachhochschule Leipzig
CY  - Leipzig
ER  - 
TY  - JOUR
A1  - Olbertz, Klaus
T1  - Abschlagsfreie Rente mit 63 - Die wichtigsten Fragestellungen und Lösungen für die Praxis
JF  - NWB - Steuer- und Wirtschaftsrecht
Y1  - 2018
SN  - 1860-9449
IS  - 15
SP  - 1263
EP  - 1270
PB  - NWB Verlag
CY  - Herne
ER  - 
TY  - JOUR
A1  - Olbertz, Klaus
A1  - Sturm, Nora
T1  - Rückzahlungsvereinbarungen für Fortbildungskosten – welche Spielregeln gelten?
JF  - Gesellschafts- und Wirtschaftsrecht : GWR
Y1  - 2018
SN  - 1868-1816
SP  - 510
EP  - 513
PB  - Beck
CY  - München
ER  - 
TY  - JOUR
A1  - Hager, Jonathan
A1  - Hentschke, Reinhard
A1  - Hojdis, Nils
A1  - Karimi-Varzaneh, Hossein Ali
T1  - Computer Simulation of Particle–Particle Interaction in a Model Polymer Nanocomposite
JF  - Macromolecules
Y1  - 2015
U6  - https://doi.org/10.1021/acs.macromol.5b01864
SN  - 1520-5835
VL  - 48
IS  - 24
SP  - 9039
EP  - 9049
ER  - 
TY  - JOUR
A1  - Klettke, Tanja
A1  - Homburg, Carsten
A1  - Gell, Sebastian
T1  - How to measure analyst forecast effort
JF  - European Accounting Review
N2  - We introduce a new way to measure the forecast effort that analysts devote to their earnings forecasts by measuring the analyst's general effort for all covered firms. While the commonly applied effort measure is based on analyst behaviour for one firm, our measure considers analyst behaviour for all covered firms. Our general effort measure captures additional information about analyst effort and thus can identify accurate forecasts. We emphasise the importance of investigating analyst behaviour in a larger context and argue that analysts who generally devote substantial forecast effort are also likely to devote substantial effort to a specific firm, even if this effort might not be captured by a firm-specific measure. Empirical results reveal that analysts who devote higher general forecast effort issue more accurate forecasts. Additional investigations show that analysts' career prospects improve with higher general forecast effort. Our measure improves on existing methods as it has higher explanatory power regarding differences in forecast accuracy than the commonly applied effort measure. Additionally, it can address research questions that cannot be examined with a firm-specific measure. It provides a simple but comprehensive way to identify accurate analysts.
Y1  - 2015
U6  - https://doi.org/10.1080/09638180.2014.909291
SN  - 0963-8180
VL  - 24
IS  - 1
SP  - 129
EP  - 146
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Bank, Bart L. van de
A1  - Orzada, Stephan
A1  - Smits, Frits
A1  - Lagemaat, Miriam W.
A1  - Rodgers, Christopher T.
A1  - Bitz, Andreas
A1  - Scheenen, Tom W. J.
T1  - Optimized (31) P MRS in the human brain at 7 T with a dedicated RF coil setup
JF  - NMR in Biomedicine
Y1  - 2015
U6  - https://doi.org/10.1002/nbm.3422
SN  - 1099-1492
VL  - 28
IS  - 11
SP  - 1570
EP  - 1578
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Noureddine, Yacine
A1  - Bitz, Andreas
A1  - Ladd, Mark E.
A1  - Thürling, Markus
A1  - Ladd, Susanne C.
A1  - Schaefers, Gregor
A1  - Kraff, Oliver
T1  - Experience with magnetic resonance imaging of human subjects with passive implants and tattoos at 7 T: a retrospective study
JF  - Magnetic Resonance Materials in Physics, Biology and Medicine
Y1  - 2015
U6  - https://doi.org/10.1007/s10334-015-0499-y
SN  - 1352-8661
VL  - 28
IS  - 6
SP  - 577
EP  - 590
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Lagemaat, Miriam W.
A1  - Maas, Marnix C.
A1  - Vos, Eline K.
A1  - Bitz, Andreas
A1  - Orzada, Stephan
A1  - Weiland, Elisabeth
A1  - Uden, Mark J. van
A1  - Kobus, Thiele
A1  - Heerschap, Arend
A1  - Scheenen, Tom W. J.
T1  - (31) P MR spectroscopic imaging of the human prostate at 7 T: T1 relaxation times, Nuclear Overhauser Effect, and spectral characterization
JF  - Magnetic Resonance in Medicine
Y1  - 2015
U6  - https://doi.org/10.1002/mrm.25209
SN  - 1522-2594
VL  - 73
IS  - 3
SP  - 909
EP  - 920
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Olbertz, Klaus
T1  - Teilzeitarbeit - Die verschiedenen Formen sowie deren Voraussetzungen und Rechtsfolgen
JF  - NWB - Steuer- und Wirtschaftsrecht
Y1  - 2018
SN  - 1860-9449
IS  - 43
SP  - 3182
EP  - 3195
PB  - NWB Verlag
CY  - Herne
ER  - 
TY  - JOUR
A1  - Schneider, Felix
A1  - Tran, Duc Hung
T1  - On the relation between the fair value option and bid-ask spreads: descriptive evidence on the recognition of credit risk changes under IFRS
JF  - Journal of Business Economics
Y1  - 2018
U6  - https://doi.org/10.1007/s11573-015-0776-2
SN  - 1861-8928
VL  - 85
IS  - 9
SP  - 1049
EP  - 1081
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Kroll-Ludwigs, Kathrin
T1  - Anforderungen des Unionsrechts an die standardisierte Darstellung des Namens : Anmerkung zu EuGH, Urt. v. 2. Oktober 2014, Rs. C-101/13 - Stadt Karlsruhe
JF  - GRP : Zeitschrift für das Privatrecht der Europäischen Union
Y1  - 2015
SN  - 2193-9519
IS  - 6
SP  - 282
EP  - 285
PB  - Verlag Dr. Otto Schmidt
CY  - Köln
ER  - 
TY  - JOUR
A1  - Kroll-Ludwigs, Kathrin
T1  - Anmerkung zu OLG München: Erbscheinserteilung nach Eintritt des Nacherbfalls, Beschl. v. 1.10.2014 - Wx 314/14
JF  - DNotZ - Deutsche Notar-Zeitschrift
Y1  - 2015
SN  - 0340-8604
IS  - 5
SP  - 385
EP  - 390
PB  - Beck
CY  - München
ER  - 
TY  - JOUR
A1  - Geier, Christian
A1  - Lehnertz, Klaus
A1  - Bialonski, Stephan
T1  - Time-dependent degree-degree correlations in epileptic brain networks: from assortative to dissortative mixing
JF  - Frontiers in Human Neuroscience
Y1  - 2015
U6  - https://doi.org/10.3389/fnhum.2015.00462
SN  - 1662-5161
PB  - Frontiers Research Foundation
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
T1  - Simulation model for the transient process behaviour of solar aluminium recycling in a rotary kiln
JF  - Applied Thermal Engineering
Y1  - 2015
U6  - https://doi.org/10.1016/j.applthermaleng.2015.01.007
SN  - 1359-4311
N1  - Autor im Original: Spiridon O. Alexopoulos
VL  - 78
SP  - 387
EP  - 396
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Seifarth, Volker
A1  - Goßmann, Matthias
A1  - Grosse, J. O.
A1  - Becker, C.
A1  - Heschel, I.
A1  - Artmann, Gerhard
A1  - Temiz Artmann, Aysegül
T1  - Development of a Bioreactor to Culture Tissue Engineered Ureters Based on the Application of Tubular OPTIMAIX 3D Scaffolds
JF  - Urologia Internationalis
Y1  - 2015
U6  - https://doi.org/10.1159/000368419
SN  - 0042-1138
VL  - 2015
IS  - 95
SP  - 106
EP  - 113
PB  - Karger
CY  - Basel
ER  - 
TY  - JOUR
A1  - Taddei, Francesca
A1  - Butenweg, Christoph
A1  - Klinkel, S.
T1  - Parametric investigation of the soil-structure interaction effects on the dynamic behaviour of a shallow foundation supported wind turbine considering a layered soil
JF  - Wind energy : an international journal for progress and applications in wind power conversion technology
Y1  - 2015
U6  - https://doi.org/10.1002/we.1703
SN  - 1099-1824 (E-Journal); 1095-4244 (Print)
VL  - Volume 18
IS  - Issue 3
SP  - 399
EP  - 417
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Kubalski, Thomas
A1  - Butenweg, Christoph
T1  - Modelling strategies for horizontally loaded infill masonry
T1  - Modellierungsansätze für horizontal beanspruchtes Ausfachungsmauerwerk
JF  - Mauerwerk : European journal of masonry
Y1  - 2015
U6  - https://doi.org/10.1002/dama.201500675
VL  - Volume 19
IS  - Issue 5
SP  - 363
EP  - 369
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Akimbekov, Nuraly S.
A1  - Digel, Ilya
A1  - O’Heras, C.
A1  - Tastambek, K.T.
A1  - Savitskaya, I.S.
A1  - Ualyeva, P.S.
A1  - Mansurov, Z.A.
A1  - Zhubanova, A.A.
T1  - Adsorption of bacterial lipopol ysaccharides on carbonized ri ce husks obtained in the batch  experiments
JF  - KazNU Bulletin. Biology series
Y1  - 2015
SN  - 1563-0218
VL  - 60
IS  - No 1/2
SP  - 144
EP  - 148
ER  - 
TY  - JOUR
A1  - Oertel, Mario
A1  - Bung, Daniel Bernhard
T1  - Numerische Strömungssimulationen von Fließgewässern : Praxisanwendungen und zukünftige Entwicklungen
JF  - Korrespondenz Wasserwirtschaft : KW
Y1  - 2015
SN  - 1616-430X
VL  - 8
IS  - H. 3
SP  - 177
EP  - 182
PB  - Gesellschaft zur Förderung der Abwassertechnik
CY  - Hennef
ER  - 
TY  - JOUR
A1  - Schumann, Christiane
A1  - Rogin, Sabine
A1  - Schneider, Horst
A1  - Tippkötter, Nils
A1  - Oster, Jürgen
A1  - Kampeis, Percy
T1  - Simultane Atline-Quantifizierung von Magnetpartikeln und Mikroorganismen bei einer HGMS-Filtration
JF  - Chemie Ingenieur Technik
N2  - Es wird eine neue Atline-Messmethode vorgestellt, mit der während einer Hochgradienten-Magnetseparation (HGMS)-Filtration eine simultane Quantifizierung von Magnetpartikeln und Mikroorganismen im Filtrat vorgenommen werden kann. Dabei gelingt die Quantifizierung signifikant besser als mit bisher verwendeten Messmethoden. Mit dieser Methode ist es möglich, die Trennleistung einer HGMS-Filtration zu bestimmen und einen Filterdurchbruch durch Konzentrationsanstiege im Bereich einiger µg L−1 von Magnetpartikeln im Filtrat frühzeitig zu detektieren, ohne dass nennenswerte Partikelmengen verloren gehen.
Y1  - 2015
U6  - https://doi.org/10.1002/cite.201300158
N1  - Englischer Titel: Simultaneous Atline Quantification of Magnetic Particles and Microorganisms in the HGMS Filtration
VL  - 87
IS  - 1-2
SP  - 137
EP  - 149
ER  - 
TY  - JOUR
A1  - Bronder, Thomas
A1  - Poghossian, Arshak
A1  - Scheja, S.
A1  - Wu, Chunsheng
A1  - Keusgen, M.
A1  - Schöning, Michael Josef
T1  - Electrostatic Detection of Unlabelled Single- and Double-stranded DNA Using Capacitive Field-effect Devices Functionalized with a Positively Charged Polyelectrolyte Layer
JF  - Procedia Engineering
N2  - Capacitive field-effect electrolyte-insulator-semiconductor sensors consisting of an Al-p-Si-SiO2 structure have been used for the electrical detection of unlabelled single- and double-stranded DNA (dsDNA) molecules by their intrinsic charge. A simple functionalization protocol based on the layer-by-layer (LbL) technique was used to prepare a weak polyelectrolyte/probe-DNA bilayer, followed by the hybridization with complementary target DNA molecules. Due to the flat orientation of the LbL-adsorbed DNA molecules, a high sensor signal has been achieved. In addition, direct label-free detection of in-solution hybridized dsDNA molecules has been studied.
Y1  - 2015
U6  - https://doi.org/10.1016/j.proeng.2015.08.710
SN  - 1877-7058
N1  - Eurosensors 2015
VL  - 120
SP  - 544
EP  - 547
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Katz, Evgeny
A1  - Schöning, Michael Josef
T1  - Enzyme logic AND-Reset and OR-Reset gates based on a field-effect electronic transducer modified with multi-enzyme membrane
JF  - Chemical Communications
N2  - Capacitive field-effect sensors modified with a multi-enzyme membrane have been applied for an electronic transduction of biochemical signals processed by enzyme-based AND-Reset and OR-Reset logic gates. The local pH change at the sensor surface induced by the enzymatic reaction was used for the activation of the Reset function for the first time.
Y1  - 2015
U6  - https://doi.org/10.1039/C5CC01362C
VL  - 51
SP  - 6564
EP  - 6567
PB  - Royal Society of Chemistry (RSC)
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Molinnus, Denise
A1  - Bäcker, Matthias
A1  - Iken, Heiko
A1  - Poghossian, Arshak
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Concept for a biomolecular logic chip with an integrated sensor and actuator function
JF  - Physica status solidi (a)
N2  - A concept for a new generation of an integrated multi-functional biosensor/actuator system is developed, which is based on biomolecular logic principles. Such a system is expected to be able to detect multiple biochemical input signals simultaneously and in real-time and convert them into electrical output signals with logical operations such as OR, AND, etc. The system can be designed as a closed-loop drug release device triggered by an enzyme logic gate, while the release of the drug induced by the actuator at the required dosage and timing will be controlled by an additional drug sensor. Thus, the system could help to make an accurate and specific diagnosis. The presented concept is exemplarily demonstrated by using an enzyme logic gate based on a glucose/glucose oxidase system, a temperature-responsive hydrogel mimicking the actuator function and an insulin (drug) sensor. In this work, the results of functional testing of individual amperometric glucose and insulin sensors as well as an impedimetric sensor for the detection of the hydrogel swelling/shrinking are presented.
Y1  - 2015
U6  - https://doi.org/10.1002/pssa.201431913
SN  - 1862-6319
VL  - 212
IS  - 6
SP  - 1382
EP  - 1388
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Bäcker, Matthias
A1  - Mayer, Dirk
A1  - Schöning, Michael Josef
T1  - Gating capacitive field-effect sensors by the charge of nanoparticle/molecule hybrids
JF  - Nanoscale
Y1  - 2015
U6  - https://doi.org/10.1039/C4NR05987E
SN  - 2040-3372 (E-Journal); 2040-3364 (Print)
SP  - 1023
EP  - 1031
PB  - Royal Society of Chemistry (RSC)
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Schusser, Sebastian
A1  - Poghossian, Arshak
A1  - Bäcker, Matthias
A1  - Krischer, M.
A1  - Leinhos, Marcel
A1  - Wagner, P.
A1  - Schöning, Michael Josef
T1  - An application of field-effect sensors for in-situ monitoring of degradation of biopolymers
JF  - Sensors and actuators B: Chemical
N2  - The characterization of the degradation kinetics of biodegradable polymers is mandatory with regard to their proper application. In the present work, polymer-modified electrolyte–insulator–semiconductor (PMEIS) field-effect sensors have been applied for in-situ monitoring of the pH-dependent degradation kinetics of the commercially available biopolymer poly(d,l-lactic acid) (PDLLA) in buffer solutions from pH 3 to pH 13. PDLLA films of 500 nm thickness were deposited on the surface of an Al–p-Si–SiO2–Ta2O5 structure from a polymer solution by means of spin-coating method. The PMEIS sensor is, in principle, capable to detect any changes in bulk, surface and interface properties of the polymer induced by degradation processes. A faster degradation has been observed for PDLLA films exposed to alkaline solutions (pH 9, pH 11 and pH 13).
Y1  - 2015
U6  - https://doi.org/10.1016/j.snb.2014.10.058
SN  - 1873-3077 (E-Journal); 0925-4005 (Print)
VL  - 207, Part B
SP  - 954
EP  - 959
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Schusser, Sebastian
A1  - Krischer, M.
A1  - Molin, D. G. M.
A1  - Akker, N. M. S. van den
A1  - Bäcker, Matthias
A1  - Poghossian, Arshak
A1  - Schöning, Michael Josef
T1  - Sensor System for in-situ and Real-time Monitoring of Polymer (bio) degradation
JF  - Procedia Engineering
N2  - A sensor system for investigating (bio)degradationprocesses of polymers is presented. The system utilizes semiconductor field-effect sensors and is capable of monitoring the degradation process in-situ and in real-time. The degradation of the polymer poly(d,l-lactic acid) is exemplarily monitored in solutions with different pH value, pH-buffer solution containing the model enzyme lipase from Rhizomucormiehei and cell-culture medium containing supernatants from stimulated and non-stimulated THP-1-derived macrophages mimicking activation of the immune system.
Y1  - 2015
U6  - https://doi.org/10.1016/j.proeng.2015.08.815
SN  - 1877-7058
N1  - Eurosensors 2015
VL  - 120
SP  - 948
EP  - 951
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Duong, Minh Tuan
A1  - Nguyen, Nhu Huynh
A1  - Tran, Thanh Ngoc
A1  - Tolba, R. H.
A1  - Staat, Manfred
T1  - Influence of refrigerated storage on tensile mechanical properties of porcine liver and spleen
JF  - International biomechanics
Y1  - 2015
U6  - https://doi.org/10.1080/23335432.2015.1049295
SN  - 2333-5432
VL  - Vol. 2
IS  - Iss. 1
SP  - 79
EP  - 88
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Bronder, Thomas
A1  - Poghossian, Arshak
A1  - Scheja, Sabrina
A1  - Wu, Chunsheng
A1  - Keusgen, Michael
A1  - Mewes, Dieter
A1  - Schöning, Michael Josef
T1  - DNA Immobilization and Hybridization Detection by the Intrinsic Molecular Charge Using Capacitive Field-Effect Sensors Modified with a Charged Weak Polyelectrolyte Layer
JF  - Applied Materials & Interfaces
N2  - Miniaturized setup, compatibility with advanced micro- and nanotechnologies, and ability to detect biomolecules by their intrinsic molecular charge favor the semiconductor field-effect platform as one of the most attractive approaches for the development of label-free DNA chips. In this work, a capacitive field-effect EIS (electrolyte–insulator–semiconductor) sensor covered with a layer-by-layer prepared, positively charged weak polyelectrolyte layer of PAH (poly(allylamine hydrochloride)) was used for the label-free electrical detection of DNA (deoxyribonucleic acid) immobilization and hybridization. The negatively charged probe single-stranded DNA (ssDNA) molecules were electrostatically adsorbed onto the positively charged PAH layer, resulting in a preferentially flat orientation of the ssDNA molecules within the Debye length, thus yielding a reduced charge-screening effect and a higher sensor signal. Each sensor-surface modification step (PAH adsorption, probe ssDNA immobilization, hybridization with complementary target DNA (cDNA), reducing an unspecific adsorption by a blocking agent, incubation with noncomplementary DNA (ncDNA) solution) was monitored by means of capacitance–voltage and constant-capacitance measurements. In addition, the surface morphology of the PAH layer was studied by atomic force microscopy and contact-angle measurements. High hybridization signals of 34 and 43 mV were recorded in low-ionic strength solutions of 10 and 1 mM, respectively. In contrast, a small signal of 4 mV was recorded in the case of unspecific adsorption of fully mismatched ncDNA. The density of probe ssDNA and dsDNA molecules as well as the hybridization efficiency was estimated using the experimentally measured DNA immobilization and hybridization signals and a simplified double-layer capacitor model. The results of field-effect experiments were supported by fluorescence measurements, verifying the DNA-immobilization and hybridization event.
Y1  - 2015
U6  - https://doi.org/10.1021/acsami.5b05146
VL  - 36
IS  - 7
SP  - 20068
EP  - 20075
PB  - American Chemical Society
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Wu, Chunsheng
A1  - Bronder, Thomas
A1  - Poghossian, Arshak
A1  - Werner, Frederik
A1  - Schöning, Michael Josef
T1  - Label-free detection of DNA using light-addressable potentiometric sensor modified with a positively charged polyelectrolyte layer
JF  - Nanoscale
N2  - A multi-spot (16 spots) light-addressable potentiometric sensor (MLAPS) consisting of an Al–p-Si–SiO2 structure modified with a weak polyelectrolyte layer of PAH (poly(allylamine hydrochloride)) was applied for the label-free electrical detection of DNA (deoxyribonucleic acid) immobilization and hybridization by the intrinsic molecular charge for the first time. To achieve a preferentially flat orientation of DNA strands and thus, to reduce the distance between the DNA charge and MLAPS surface, the negatively charged probe single-stranded DNAs (ssDNA) were electrostatically adsorbed onto the positively charged PAH layer using a simple layer-by-layer (LbL) technique. In this way, more DNA charge can be positioned within the Debye length, yielding a higher sensor signal. The surface potential changes in each spot induced due to the surface modification steps (PAH adsorption, probe ssDNA immobilization, hybridization with complementary target DNA (cDNA), non-specific adsorption of mismatched ssDNA) were determined from the shifts of photocurrent–voltage curves along the voltage axis. A high sensor signal of 83 mV was registered after immobilization of probe ssDNA onto the PAH layer. The hybridization signal increases from 5 mV to 32 mV with increasing the concentration of cDNA from 0.1 nM to 5 μM. In contrast, a small signal of 5 mV was recorded in the case of non-specific adsorption of fully mismatched ssDNA (5 μM). The obtained results demonstrate the potential of the MLAPS in combination with the simple and rapid LbL immobilization technique as a promising platform for the future development of multi-spot light-addressable label-free DNA chips with direct electrical readout.
Y1  - 2015
U6  - https://doi.org/10.1039/C4NR07225A
VL  - 14
IS  - 7
SP  - 6143
EP  - 6150
PB  - Royal Society of Chemistry (RSC)
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Thiel, Alexander
A1  - Muffler, Kai
A1  - Tippkötter, Nils
A1  - Suck, Kirstin
A1  - Sohling, Ulrich
A1  - Ruf, Friedrich
A1  - Ulber, Roland
T1  - Aufarbeitung von Polyphenolen aus Weizen mittels Zeolithen am Beispiel der Ferulasäure
JF  - Chemie IngenieurTechnik
N2  - Aufarbeitung von Polyphenolen aus Weizenmittels Zeolithen am Beispiel der Ferulasa¨ ureAlexander Thiel1, Kai Muffler1, Nils Tippko¨ tter1, Kirstin Suck2, Ulrich Sohling2, Friedrich Ruf3und Roland Ulber1,*DOI: 10.1002/cite.201400031Bei der Ferulasa¨ure handelt es sich um einen Wertstoff, der aus Weizen gewonnen und in der Lebensmittel- und Pharma-industrie eingesetzt werden kann. Der Einsatz von Weizen als nachwachsende Rohstoffquelle ist allerdings nur dann wirt-schaftlich durchfu¨hrbar, wenn eine Prozessintegration in die bestehenden industriellen Verfahren gewa¨hrleistet oder einedirekte Konkurrenz zur Mehl- und Sta¨rkeindustrie vermieden werden kann. In diesem Artikel wird ein Verfahren aufge-zeigt, welches hohe Ausbeuten ermo¨glicht und eine Konkurrenz zu bestehenden Verwertungspfaden vermeidet.
Y1  - 2015
U6  - https://doi.org/10.1002/cite.201400031
N1  - Englischer Titel: Downstream Processing of Polyphenols from Wheat by Zeolites using the Example of Ferulic Acid
VL  - 87
IS  - 1-2
SP  - 128
EP  - 136
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Al-Kaidy, Huschyar
A1  - Duwe, Anna
A1  - Huster, Manuel
A1  - Muffler, Kai
A1  - Schlegel, Christin
A1  - Tim, Sieker
A1  - Stadtmüller, Ralf
A1  - Tippkötter, Nils
A1  - Ulber, Roland
T1  - Biotechnology and bioprocess engineering – from the first ullmann's article to recent trends
JF  - ChemBioEng Reviews
N2  - For several thousand years, biotechnology and its associated technical processes have had a great impact on the development of mankind. Based on empirical methods, in particular for the production of foodstuffs and daily commodities, these disciplines have become one of the most innovative future issues. Due to the increasing detailed understanding of cellular processes, production strains can now be optimized. In combination with modern bioprocesses, a variety of bulk and fine chemicals as well as pharmaceuticals can be produced efficiently. In this article, some of the current trends in biotechnology are discussed.
Y1  - 2015
U6  - https://doi.org/10.1002/cben.201500008
VL  - 2
IS  - 3
SP  - 175
EP  - 184
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Henderson, Colin J.
A1  - Mclaughlin, Lesley A.
A1  - Scheer, Nico
A1  - Stanley, Lesley A.
A1  - Wolf, C. Roland
T1  - Cytochrome b5 Is a Major Determinant of Human Cytochrome P450 CYP2D6 and CYP3A4 Activity In Vivo s
JF  - Molecular Pharmacology
Y1  - 2015
U6  - https://doi.org/10.1124/mol.114.097394
SN  - 1521-0111
VL  - 87
IS  - 4
SP  - 733
EP  - 739
PB  - ASPET
CY  - Bethesda
ER  - 
TY  - JOUR
A1  - Scheer, Nico
A1  - Kapelyukh, Yury
A1  - Rode, Anja
A1  - Oswald, Stefan
A1  - Busch, Diana
A1  - Mclaughlin, Lesley A.
A1  - Lin, De
A1  - Henderson, Colin J.
A1  - Wolf, C. Roland
T1  - Defining Human Pathways of Drug Metabolism In Vivo through the Development of a Multiple Humanized Mouse Model
JF  - Drug Metabolism and Disposition
Y1  - 2015
U6  - https://doi.org/10.1124/dmd.115.065656
SN  - 1521-009x
VL  - 43
IS  - 11
SP  - 1679
EP  - 1690
PB  - ASPET
CY  - Bethesda
ER  - 
TY  - JOUR
A1  - Egner, Ralf
A1  - Heyde, Stefan
A1  - Laumann, Jörg
A1  - Prokop, Ines
T1  - Vorschläge für eine anwenderfreundliche und praxistaugliche Novellierung der allgemeinen Bemessungsregeln und Regeln für den Hochbau (EN 1993 Teil 1-1)
JF  - Stahlbau
Y1  - 2015
U6  - https://doi.org/10.1002/stab.201510321
SN  - 1437-1049
VL  - 84
IS  - 10
SP  - 811
EP  - 822
PB  - Ernst & Sohn
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Fredebeul-Krein, Markus
T1  - TTIP : warum ein Investitionsschutzabkommen wünschenswert ist
JF  - Ordnungspolitischer Kommentar / Institut für Wirtschaftspolitik an der Universität zu Köln
Y1  - 2015
IS  - 02
SP  - 1
EP  - 2
ER  - 
TY  - JOUR
A1  - Duong, Minh Tuan
A1  - Nguyen, Nhu Huynh
A1  - Staat, Manfred
T1  - Physical response of hyperelastic models for composite materials and soft tissues
JF  - Asia pacific journal on computational engineering
Y1  - 2015
U6  - https://doi.org/10.1186/s40540-015-0015-x
SN  - 2196-1166
VL  - 2
IS  - 3 (December 2015)
SP  - 1
EP  - 18
ER  - 
TY  - JOUR
A1  - Feichtinger, Linda M.
A1  - Eilmann, Britta
A1  - Buchmann, Nina
A1  - Rigling, Andreas
T1  - Trait-specific responses of Scots pine to irrigation on a short vs long time scale
JF  - Tree Physiology
Y1  - 2015
U6  - https://doi.org/10.1093/treephys/tpu114
SN  - 1758-4469  (Online)
SN  - 0829-318X (Print)
N1  - Ab 12 Monaten nach Veröffentlichung kostenfrei zugänglich.
VL  - 35
IS  - 00
SP  - 1
EP  - 12
PB  - Heron
CY  - Victoria, BC
ER  - 
TY  - JOUR
A1  - Molinnus, Denise
A1  - Bäcker, Matthias
A1  - Siegert, Petra
A1  - Willenberg, H.
A1  - Poghossian, Arshak
A1  - Keusgen, M.
A1  - Schöning, Michael Josef
T1  - Detection of Adrenaline Based on Substrate Recycling Amplification
JF  - Procedia Engineering
N2  - An amperometric enzyme biosensor has been applied for the detection of adrenaline. The adrenaline biosensor has been prepared by modification of an oxygen electrode with the enzyme laccase that operates at a broad pH range between pH 3.5 to pH 8. The enzyme molecules were immobilized via cross-linking with glutaraldehyde. The sensitivity of the developed adrenaline biosensor in different pH buffer solutions has been studied.
Y1  - 2015
U6  - https://doi.org/10.1016/j.proeng.2015.08.708
SN  - 1877-7058
N1  - Eurosensors 2015
VL  - 120
SP  - 540
EP  - 543
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Schusser, Sebastian
A1  - Krischer, Maximillian
A1  - Bäcker, Matthias
A1  - Poghossian, Arshak
A1  - Wagner, Patrick
A1  - Schöning, Michael Josef
T1  - Monitoring of the Enzymatically Catalyzed Degradation of Biodegradable Polymers by Means of Capacitive Field-Effect Sensors
JF  - Analytical Chemistry
N2  - Designing novel or optimizing existing biodegradable polymers for biomedical applications requires numerous tests on the effect of substances on the degradation process. In the present work, polymer-modified electrolyte–insulator–semiconductor (PMEIS) sensors have been applied for monitoring an enzymatically catalyzed degradation of polymers for the first time. The thin films of biodegradable polymer poly(d,l-lactic acid) and enzyme lipase were used as a model system. During degradation, the sensors were read-out by means of impedance spectroscopy. In order to interpret the data obtained from impedance measurements, an electrical equivalent circuit model was developed. In addition, morphological investigations of the polymer surface have been performed by means of in situ atomic force microscopy. The sensor signal change, which reflects the progress of degradation, indicates an accelerated degradation in the presence of the enzyme compared to hydrolysis in neutral pH buffer media. The degradation rate increases with increasing enzyme concentration. The obtained results demonstrate the potential of PMEIS sensors as a very promising tool for in situ and real-time monitoring of degradation of polymers.
Y1  - 2015
U6  - https://doi.org/10.1021/acs.analchem.5b00617
SN  - 1520-6882
VL  - 87
IS  - 13
SP  - 6607
EP  - 6613
PB  - ACS Publications
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Beging, Stefan
A1  - Leinhos, Marcel
A1  - Jablonski, Melanie
A1  - Poghossian, Arshak
A1  - Schöning, Michael Josef
T1  - Studying the spatially resolved immobilisation of enzymes on a capacitive field-effect structure by means of nano-spotting
JF  - Physica status solidi (a)
Y1  - 2015
U6  - https://doi.org/10.1002/pssa.201431891
SN  - 1862-6319
VL  - 212
IS  - 6
SP  - 1353
EP  - 1358
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Huck, Christina
A1  - Poghossian, Arshak
A1  - Bäcker, Matthias
A1  - Reisert, Steffen
A1  - Kramer, Friederike
A1  - Begoyan, Vardges K.
A1  - Buniatyan, Vahe V.
A1  - Schöning, Michael Josef
T1  - Multi-parameter sensing using high-k oxide of barium strontium titanate
JF  - Physica status solidi (a)
N2  - High-k perovskite oxide of barium strontium titanate (BST) represents a very attractive multi-functional transducer material for the development of (bio-)chemical sensors. In this work, a Si-based sensor chip containing Pt interdigitated electrodes covered with a thin BST layer (485 nm) has been developed for multi-parameter chemical sensing. The chip has been applied for the contactless measurement of the electrolyte conductivity, the detection of adsorbed charged macromolecules (positively charged polyelectrolytes of polyethylenimine) and the concentration of hydrogen peroxide (H2O2) vapor. The experimental results of functional testing of individual sensors are presented. The mechanism of the BST sensitivity to charged polyelectrolytes and H2O2 vapor has been proposed and discussed.
Y1  - 2015
U6  - https://doi.org/10.1002/pssa.201431911
SN  - 1862-6319
VL  - 212
IS  - 6
SP  - 1259
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Mulhern, Colm
A1  - Bialonski, Stephan
A1  - Kantz, Holger
T1  - Extreme events due to localization of energy
JF  - Physical Review E
Y1  - 2015
U6  - https://doi.org/10.1103/PhysRevE.91.012918
SN  - 2470-0053
VL  - 91
IS  - 1
SP  - 012918
ER  - 
TY  - JOUR
A1  - Bialonski, Stephan
A1  - Ansmann, Gerrit
A1  - Kantz, Holger
T1  - Data-driven prediction and prevention of extreme events in a spatially extended excitable system
JF  - Physical Review E
Y1  - 2015
U6  - https://doi.org/10.1103/PhysRevE.92.042910
SN  - 2470-0053
VL  - 92
IS  - 4
SP  - 042910
ER  - 
TY  - JOUR
A1  - Wiesen, Sebastian
A1  - Tippkötter, Nils
A1  - Muffler, Kai
A1  - Suck, Kirstin
A1  - Sohling, Ulrich
A1  - Ruf, Friedrich
A1  - Ulber, Roland
T1  - Adsorption of fatty acids to layered double hydroxides in aqueous systems
JF  - Adsorption
N2  - Due to their anion exchange characteristics, layered double hydroxides (LDHs) are suitable for the detoxification of aqueous, fatty acid containing fermentation substrates. The aim of this study is to examine the adsorption mechanism, using crude glycerol from plant oil esterification as a model system. Changes in the intercalation structure in relation to the amount of fatty acids adsorbed are monitored by X-ray diffraction and infra-red spectroscopy. Additionally, calcination of LDH is investigated in order to increase the binding capacity for fatty acids. Our data propose that, at ambient temperature, fatty acids can be bound to the hydrotalcite by adsorption or in addition by intercalation, depending on fatty acid concentration. The adsorption of fatty acids from crude glycerol shows a BET-like behavior. Above a fatty acid concentration of 3.5 g L−1, intercalation of fatty acids can be shown by the appearance of an increased interlayer spacing. This observation suggests a two phase adsorption process. Calcination of LDHs allows increasing the binding capacity for fatty acids by more than six times, mainly by reduction of structural CO32−.
Y1  - 2015
VL  - 21
IS  - 6-7
SP  - 459
EP  - 466
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Hough, Lindsay B.
A1  - Nalwalk, Julia W.
A1  - Ding, Xinxin
A1  - Scheer, Nico
T1  - Opioid Analgesia in P450 Gene Cluster Knockout Mice: A Search for Analgesia-Relevant Isoforms
JF  - Drug Metabolism and Disposition
Y1  - 2015
U6  - https://doi.org/10.1124/dmd.115.065490
SN  - 1521-009x
VL  - 43
IS  - 9
SP  - 1326
EP  - 1330
ER  - 
TY  - JOUR
A1  - Baringhaus, Ludwig
A1  - Gaigall, Daniel
T1  - On an independence test approach to the goodness-of-fit problem
JF  - Journal of Multivariate Analysis
N2  - Let X₁,…,Xₙ be independent and identically distributed random variables with distribution F. Assuming that there are measurable functions f:R²→R and g:R²→R characterizing a family F of distributions on the Borel sets of R in the way that the random variables f(X₁,X₂),g(X₁,X₂) are independent, if and only if F∈F, we propose to treat the testing problem H:F∈F,K:F∉F by applying a consistent nonparametric independence test to the bivariate sample variables (f(Xᵢ,Xⱼ),g(Xᵢ,Xⱼ)),1⩽i,j⩽n,i≠j. A parametric bootstrap procedure needed to get critical values is shown to work. The consistency of the test is discussed. The power performance of the procedure is compared with that of the classical tests of Kolmogorov–Smirnov and Cramér–von Mises in the special cases where F is the family of gamma distributions or the family of inverse Gaussian distributions.
KW  - Goodness-of-fit test
KW  - Independence test
KW  - Parametric bootstrap
KW  - Vapnik–Čhervonenkis class
KW  - Gamma distribution
Y1  - 2015
U6  - https://doi.org/10.1016/j.jmva.2015.05.013
SN  - 0047-259X
VL  - 2015
IS  - 140
SP  - 193
EP  - 208
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Klinge, Uwe
A1  - Otto, Jens
A1  - Mühl, Thomas
T1  - High Structural Stability of Textile Implants Prevents Pore Collapse and Preserves Effective Porosity at Strain
JF  - BioMed Research International
Y1  - 2015
U6  - https://doi.org/10.1155/2015/953209
SN  - 2314-6133 (Print)
SN  - 2314-6141 (Online)
N1  - Article ID: 953209
VL  - 2015
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  -