TY  - JOUR
A1  - Faßbender, F.
A1  - Schmitt, G.
A1  - Schöning, Michael Josef
A1  - Lüth, H.
A1  - Buß, G.
A1  - Schultze, J. W.
T1  - Optimization of passivation layers for corrosion protection of silicon-based microelectrode arrays
JF  - Sensors and Actuators B. 68 (2000), H. 1-3
Y1  - 2000
SN  - 0925-4005
SP  - 128
EP  - 133
ER  - 
TY  - JOUR
A1  - Dantism, Shahriar
A1  - Röhlen, Desiree
A1  - Wagner, Torsten
A1  - Wagner, Patrick
A1  - Schöning, Michael Josef
T1  - Optimization of Cell-Based Multi-Chamber LAPS Measurements Utilizing FPGA-Controlled Laser-Diode Modules
JF  - physica status solidi a : applications and materials sciences
N2  - A light-addressable potentiometric sensor (LAPS) is a field-effect-based potentiometric device, which detects concentration changes of an analyte solution on the sensor surface in a spatially resolved way. It uses a light source to generate electron–hole pairs inside the semiconductor, which are separated in the depletion region due to an applied bias voltage across the sensor structure and hence, a surface-potential-dependent photocurrent can be read out. However, depending on the beam angle of the light source, scattering effects can occur, which influence the recorded signal in LAPS-based differential measurements. To solve this problem, a novel illumination unit based on a field programmable gate array (FPGA) consisting of 16 small-sized tunable infrared laser-diode modules (LDMs) is developed. Due to the improved focus of the LDMs with a beam angle of only 2 mrad, undesirable scattering effects are minimized. Escherichia coli (E. coli) K12 bacteria are used as a test microorganism to study the extracellular acidification on the sensor surface. Furthermore, a salt bridge chamber is built up and integrated with the LAPS system enabling multi-chamber differential measurements with a single Ag/AgCl reference electrode.
Y1  - 2018
U6  - http://dx.doi.org/10.1002/pssa.201800058
SN  - 1862-6319
VL  - 215
IS  - 15
SP  - Article number 1800058
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Pilas, Johanna
A1  - Mariano, K.
A1  - Keusgen, M.
A1  - Selmer, Thorsten
A1  - Schöning, Michael Josef
T1  - Optimization of an Enzyme-based Multi-parameter Biosensor for Monitoring Biogas Processes
JF  - Procedia Engineering
Y1  - 2015
U6  - http://dx.doi.org/10.1016/j.proeng.2015.08.702
SN  - 1877-7058
N1  - Part of special issue "Eurosensors 2015"
VL  - 120
SP  - 532
EP  - 535
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Pilas, Johanna
A1  - Yazici, Yasemen
A1  - Selmer, Thorsten
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Optimization of an amperometric biosensor array for simultaneous measurement of ethanol, formate, d- and l-lactate
JF  - Electrochimica Acta
N2  - The immobilization of NAD+-dependent dehydrogenases, in combination with a diaphorase, enables the facile development of multiparametric sensing devices. In this work, an amperometric biosensor array for simultaneous determination of ethanol, formate, d- and l-lactate is presented. Enzyme immobilization on platinum thin-film electrodes was realized by chemical cross-linking with glutaraldehyde. The optimization of the sensor performance was investigated with regard to enzyme loading, glutaraldehyde concentration, pH, cofactor concentration and temperature. Under optimal working conditions (potassium phosphate buffer with pH 7.5, 2.5 mmol L-1 NAD+, 2.0 mmol L-1 ferricyanide, 25 °C and 0.4% glutaraldehyde) the linear working range and sensitivity of the four sensor elements was improved. Simultaneous and cross-talk free measurements of four different metabolic parameters were performed successfully. The reliable analytical performance of the biosensor array was demonstrated by application in a clarified sample of inoculum sludge. Thereby, a promising approach for on-site monitoring of fermentation processes is provided.
KW  - Simultaneous determination
KW  - Enzymatic biosensor
KW  - Diaphorase
KW  - Dehydrogenase
Y1  - 2017
U6  - http://dx.doi.org/10.1016/j.electacta.2017.07.119
SN  - 0013-4686
VL  - 251
SP  - 256
EP  - 262
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Kirchner, Patrick
A1  - Oberländer, Jan
A1  - Friedrich, Peter
A1  - Berger, Jörg
A1  - Suso, Henri-Pierre
A1  - Kupyna, Andriy
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Optimisation and fabrication of a calorimetric gas sensor built up on a polyimide substrate for H2O2 monitoring
JF  - Physica status solidi (a) : applications and material science. 208 (2011), H. 6
Y1  - 2011
SN  - 1862-6319
SP  - 1235
EP  - 1240
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Schäfer, Horst
A1  - Shen, J.
A1  - Ossau, W.
A1  - Landwehr, G. (u.a.)
T1  - Optically Detected Cyclotron Resonance (ODCR) in n- and p-type GaAs/AlGaAs Heterostructures
Y1  - 1995
N1  - Als Poster vorgelegt auf der Frühjahrstagung der DPG in Berlin, 20.-24. März 1995, Verhandl. DPG (VI) 30, HL 33.79 / Physikalisches Institut der Universität Würzburg.
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  - http://dx.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  - BOOK
A1  - Sander, Volker
T1  - Optical Network Infrastructure for Grid / Simeonidou, Dimitra ... (ed.)
Y1  - 2004
N1  - GFD-I.036 Category: Informational ; GHPN-RG
PB  - Global Grid Forum
ER  - 
TY  - JOUR
A1  - Micili, Serap C.
A1  - Valter, Markus
A1  - Oflaz, Hakan
A1  - Ozogul, Candan
A1  - Linder, Peter
A1  - Föckler, Nicole
A1  - Artmann, Gerhard
A1  - Digel, Ilya
A1  - Temiz Artmann, Aysegül
T1  - Optical coherence tomography : a potential tool to predict premature rupture of fetal membranes
JF  - Proceedings of the Institution of Mechanical Engineers. Part H : Journal of engineering in medicine
Y1  - 2013
SN  - 0046-2039 (Print) ; 2041-3033 (E-Journal)
VL  - Vol. 227
IS  - No. 4
SP  - 393
EP  - 401
PB  - Sage
CY  - London
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
T1  - Operator
JF  - Compendium of Quantum Physics : concepts, experiments, history and philosophy / Daniel Greenberger ... ed.
Y1  - 2009
SN  - 978-3-540-70622-9
SP  - 440
EP  - 444
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Bozakov, Zdravko
A1  - Sander, Volker
T1  - OpenFlow: A Perspective for Building Versatile Networks
T2  - Network-Embedded Management and Applications
Y1  - 2013
SN  - 978-1-4419-6769-5
U6  - http://dx.doi.org/10.1007/978-1-4419-6769-5_11
SP  - 217
EP  - 245
PB  - Springer
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Huck, Christina
A1  - Jolly, Christina
A1  - Wagner, Patrick
A1  - Poghossian, Arshak
A1  - Schöning, Michael Josef
T1  - One-chip integrated dual amperometric/field-effect sensor for the detection of dissolved hydrogen
JF  - Procedia Engineering. 25 (2011)
Y1  - 2011
SN  - 1877-7058
N1  - EurosensorsXXV ; Proc. Eurosensors XXV, September 4-7, 2011, Athens, Greece
SP  - 1161
EP  - 1164
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Müller-Veggian, Mattea
A1  - Beuscher, H.
A1  - Haenni, D. R.
A1  - Gono, Y.
T1  - On-line experiments with the orange-β-spectrometer
JF  - Annual report 1977 / Institut für Kernphysik Kernforschungsanlage Jülich
Y1  - 1978
N1  - Spezielle Berichte der Kernforschungsanlage Jülich ; 15
SP  - 51
EP  - 52
PB  - Verlag des Forschungszentrums Jülich
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Pieronek, Lukas
A1  - Kleefeld, Andreas
T1  - On trajectories of complex-valued interior transmission eigenvalues
JF  - Inverse problems and imaging : IPI
N2  - This paper investigates the interior transmission problem for homogeneous media via eigenvalue trajectories parameterized by the magnitude of the refractive index. In the case that the scatterer is the unit disk, we prove that there is a one-to-one correspondence between complex-valued interior transmission eigenvalue trajectories and Dirichlet eigenvalues of the Laplacian which turn out to be exactly the trajectorial limit points as the refractive index tends to infinity. For general simply-connected scatterers in two or three dimensions, a corresponding relation is still open, but further theoretical results and numerical studies indicate a similar connection.
KW  - Interior transmission problem
KW  - Eigenvalue trajectories
KW  - Complex-valued eigenvalues
Y1  - 2024
U6  - http://dx.doi.org/10.3934/ipi.2023041
SN  - 1930-8337 (Print)
SN  - 1930-8345 (Online)
VL  - 18
IS  - 2
SP  - 480
EP  - 516
PB  - AIMS
CY  - Springfield, Mo
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Quell, P.
T1  - On the Vanishing Displacement Current Limit for Eddy-Current Problems / Quell, P. ; Reißel, M.
JF  - ZAMM - Zeitschrift für Angewandte Mathematik und Mechanik. 76 (1996), H. S2
Y1  - 1996
SN  - 0044-2267
N1  - ICIAM/GAMM 95 Applied Analysis
SP  - 649
EP  - 650
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
T1  - On the Representation of Quantum Mechanics on Phase Space
JF  - International Journal of Theoretical Physics. 31 (1992), H. 9
Y1  - 1992
SN  - 1572-9575
SP  - 1785
EP  - 1795
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
T1  - On the Representation of Quantum Mechanics on a Classical Sample Space
JF  - International Journal of Theoretical Physics. 37 (1998), H. 1
Y1  - 1998
SN  - 1572-9575
SP  - 349
EP  - 356
ER  - 
TY  - JOUR
A1  - Gaigall, Daniel
T1  - On the applicability of several tests to models with not identically distributed random effects
JF  - Statistics : A Journal of Theoretical and Applied Statistics
N2  - We consider Kolmogorov–Smirnov and Cramér–von-Mises type tests for testing central symmetry, exchangeability, and independence. In the standard case, the tests are intended for the application to independent and identically distributed data with unknown distribution. The tests are available for multivariate data and bootstrap procedures are suitable to obtain critical values. We discuss the applicability of the tests to random effects models, where the random effects are independent but not necessarily identically distributed and with possibly unknown distributions. Theoretical results show the adequacy of the tests in this situation. The quality of the tests in models with random effects is investigated by simulations. Empirical results obtained confirm the theoretical findings. A real data example illustrates the application.
KW  - central symmetry test
KW  - exchangeability test
KW  - independence test
KW  - random effects
KW  - not identically distributed
Y1  - 2023
SN  - 0323-3944
U6  - http://dx.doi.org/10.1080/02331888.2023.2193748
SN  - 1029-4910
VL  - 57
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Grotendorst, Johannes
A1  - Jansen, Paul
A1  - Schoberth, Siegfried
T1  - On Solving the McConnell Equations in Biochemistry / Grotendorst, Johannes ; Jansen, Paul ; Schoberth, Siegfried
JF  - MapleTech. 1 (1993)
Y1  - 1993
SN  - 1061-5733
N1  - zgl. Technical Report KFA-ZAM-IB-9314 ; The Maple Technical Newsletter
SP  - 56
EP  - 62
ER  - 
TY  - JOUR
A1  - Dikta, Gerhard
T1  - On Semiparametric Random Censorship Models
JF  - Journal of Statistical Planning and Inference. 66 (1998), H. 2
Y1  - 1998
SN  - 0378-3758
SP  - 253
EP  - 279
ER  -