TY  - CHAP
A1  - Grundmann, Jan Thimo
A1  - Meß, Jan-Gerd
A1  - Biele, Jens
A1  - Seefeldt, Patric
A1  - Dachwald, Bernd
A1  - Spietz, Peter
A1  - Grimm, Christian D.
A1  - Spröwitz, Tom
A1  - Lange, Caroline
A1  - Ulamec, Stephan
T1  - Small spacecraft in small solar system body applications
T2  - IEEE Aerospace Conference 2017, Big Sky, Montana, USA
Y1  - 2017
SN  - 978-1-5090-1613-6
U6  - https://doi.org/10.1109/AERO.2017.7943626
SP  - 1
EP  - 20
ER  - 
TY  - JOUR
A1  - Grundmann, Jan Thimo
A1  - Dachwald, Bernd
A1  - Grimm, Christian D.
A1  - Kahle, Ralph
A1  - Koch, Aaron Dexter
A1  - Krause, Christian
A1  - Lange, Caroline
A1  - Quantius, Dominik
A1  - Ulamec, Stephan
T1  - Spacecraft for Hypervelocity Impact Research – An Overview of Capabilities, Constraints and the Challenges of Getting There
JF  - Procedia Engineering
Y1  - 2015
U6  - https://doi.org/10.1016/j.proeng.2015.04.021
SN  - 1877-7058
N1  - Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS 2015)
VL  - Vol. 103
SP  - 151
EP  - 158
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Buniatyan, Vahe V.
A1  - Abouzar, Maryam H.
A1  - Martirosyan, Norayr W.
A1  - Schubert, Jürgen
A1  - Gevorgian, Spartak
A1  - Schöning, Michael Josef
A1  - Poghossian, Arshak
T1  - pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique
JF  - Physica Status Solidi (A)
N2  - pH-sensitive properties of barium strontium titanate (BST) high-k thin films as alternative gate material for field-effect capacitive (bio-)chemical sensors based on an electrolyte-insulator-semiconductor system have been investigated. The BST films of different compositions (Ba0.31Sr0.69TiO3, Ba0.25Sr0.75TiO3 and Mg-doped Ba0.8Sr0.2Mg0.1Ti0.9O3) were deposited by pulsed laser deposition technique from targets fabricated by self-propagating high-temperature synthesis. The realised sensors have been electrochemically characterised by means of impedance-spectroscopy, capacitance–voltage and constant-capacitance method. The sensors possess a Nernstian-like pH sensitivity in the concentration range between pH 3 and 11 with a response time of 5–10 s. An equivalent circuit model for the BST-based capacitive field-effect sensor is discussed.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983310
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 824
EP  - 830
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Turek, Monik
A1  - Heiden, Wolfgang
A1  - Guo, Sharon
A1  - Riesen, Alfred
A1  - Schubert, Jürgen
A1  - Zander, Willi
A1  - Krüger, Peter
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Simultaneous detection of cyanide and heavy metals for environmental analysis by means of µISEs
JF  - Physica Status Solidi (A)
N2  - In environmental analysis, cyanide and heavy metals play an important role, because these substances are highly toxic for biological systems. They can lead to chronic and acute diseases. Due to the chemical properties of cyanide it is frequently used for industrial processes such as extraction of silver and gold. Heavy metals can be found as trace elements in nature and are often applied in industries e.g., galvanization processes. Up to now, cyanide and heavy metals can be detected by several sensors separately and their detection is often limited to laboratory investigations. In this publication, with regard to an in situ analysis, a new miniaturized silicon-based sensor system for the simultaneous detection of cyanide and heavy metals in aqueous solutions is presented that is based on chalcogenide glass-based micro ion-selective electrodes (µISEs). The µISEs are incorporated into a specially designed measuring system for the simultaneous detection of heavy metals and cyanide in solutions and validated by simultaneous measurements of Cu2+- and CN−-ions, Cd2+- and CN−- ions and Pb2+- and CN−-ions. The particular sensor system has shown good sensor properties in the µ-molar ion-concentration range. For simultaneous measurements in complex heavy metal and cyanide solutions an intelligent software using fuzzy logic is discussed.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983303
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 817
EP  - 823
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Jansen, S. V.
A1  - Behbahani, Mehdi
A1  - Laumen, M.
A1  - Kaufmann, T.
A1  - Hormes, M.
A1  - Behr, Marek
A1  - Schmitz-Rode, T.
A1  - Steinseifer, U.
T1  - Investigation of Steady Flow Through a Realistic Model of the Thoracic Human Aorta Using 3D Stereo PIV and CFD-Simulation
JF  - ASAIO Journal
Y1  - 2010
U6  - https://doi.org/10.1097/01.mat.0000369377.65122.a3
N1  - American Society of Artificial Organs (ASAIO), Baltimore, USA, May 27-29, 2010
VL  - 56
IS  - 2
SP  - 98
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Probst, M.
A1  - Mai, A.
A1  - Tran, L.
A1  - Vonderstein, K.
A1  - Keschenau, P.
A1  - Linde, T.
A1  - Steinseifer, U.
A1  - Behr, Marek
A1  - Mottaghy, K.
T1  - The influence of high shear on thrombosis and hemolysis in artificial organs
JF  - The International Journal of Artificial Organs
Y1  - 2010
SN  - 0391-3988
VL  - 33
IS  - 7
SP  - 426
EP  - 426
PB  - Sage
CY  - Thousand Oaks
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Nam, J.
A1  - Waluga, C.
A1  - Behr, Marek
A1  - Pasquali, M.
A1  - Mottaghy, K.
T1  - Modeling and Numerical Analysis of Platelet Activation, Adhesion and Aggregation in Artificial Organs
Y1  - 2010
U6  - https://doi.org/10.1097/01.mat.0000369377.65122.a3
N1  - Posterpresentation American Society of Artificial Organs (ASAIO), Baltimore, USA, May 27-29, 2010
VL  - 56
IS  - 2
SP  - 85
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Behr, Marek
A1  - Bischof, F.
A1  - Wolf, G. E.
T1  - Kranken Herzen helfen - Ingenieure und Informatiker entwickeln gemeinsam eine Miniaturblutpumpe / Behbahani, M. ; Behr, M. ; Bischof, F. ; Wolf, G. E.
JF  - RWTH-Themen (2007)
Y1  - 2007
SN  - 0179-079X
SP  - 44
EP  - 46
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Beckers, Leah
A1  - Schaub, A.
A1  - Zander, W.
A1  - Schubert, J.
A1  - Mesters, S.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - A novel silicon-based pH sensor prepared by pulsed laser deposition technique
JF  - Proceedings of Eurosensors X, the 10th European Conference on Solid-State Transducers, September 8-11, 1996, Leuven, Belgium / [KU Leuven]. Puers, Robert.  Vol. 3.
Y1  - 1996
SN  - 90-803282-1-9
N1  - Eurosensors ; (10, 1996, Louvain) Eurosensors, the European Conference on Solid-State Transducers ; (10 : ; 1996.09.08-11 : ; Leuven)
SP  - 781
EP  - 784
PB  - Catholic University Leuven
CY  - Heverlee, Belgium
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
A1  - Pfeffer, H.-U.
A1  - Friesel, J.
A1  - Beier, Reinhold
T1  - Pilotuntersuchungen gemäß dem Verordnungsentwurf nach § 40, Abs. 2 des Bundesimmissionsschutzgesetzes / H.-U. Pfeffer, J. Friesel, G. Elbers, R. Beier, K. Ellermann
JF  - Drei Jahrzehnte Luftqualitätsüberwachung : Vorträge und Berichte zum Kolloquium "Drei Jahrzehnte Luftqualitätsüberwachung - Bilanz und Perspektiven" am 11. November 1993 in Essen / [Hrsg.: Landesanstalt für Immissionsschutz Nordrhein-Westfalen. Red. Bearb.: Robert Niesenhaus]
Y1  - 1993
N1  - LIS-Berichte ; 110 ;
SP  - 117
CY  - Essen
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Mai, A.
A1  - Waluga, C.
A1  - Bergmann, B.
A1  - Tran, L.
A1  - Vonderstein, K.
A1  - Behr, Marek
A1  - Mottaghy, K.
T1  - Numerical Modeling of Flow-Related Thrombus Formation under Physiological and Non-Physiological Flow Conditions
JF  - Acta Physiologica
Y1  - 2010
SN  - 1748-1716
N1  - Joint Congress of the Scandinavian and German Physiological Societies, Copenhagen, Denmark, March 27-30, 2010
VL  - 198
IS  - Supplement 677
SP  - 185
ER  - 
TY  - JOUR
A1  - Siqueira, José R. Jr.
A1  - Bäcker, Matthias
A1  - Poghossian, Arshak
A1  - Zucolotto, Valtencir
A1  - Oliveira, Osvaldo N. Jr.
A1  - Schöning, Michael Josef
T1  - Associating biosensing properties with the morphological structure of multilayers containing carbon nanotubes on field-effect devices
JF  - Physica Status Solidi (A)
N2  - The control of molecular architecture provided by the layer-by-layer (LbL) technique has led to enhanced biosensors, in which advantageous features of distinct materials can be combined. Full optimization of biosensing performance, however, is only reached if the film morphology is suitable for the principle of detection of a specific biosensor. In this paper, we report a detailed morphology analysis of LbL films made with alternating layers of single-walled carbon nanotubes (SWNTs) and polyamidoamine (PAMAM) dendrimers, which were then covered with a layer of penicillinase (PEN). An optimized performance to detect penicillin G was obtained with 6-bilayer SWNT/PAMAM LbL films deposited on p-Si-SiO2-Ta2O5 chips, used in biosensors based on a capacitive electrolyte-insulator-semiconductor (EIS) and a light-addressable potentiometric sensor (LAPS) structure, respectively. Field-emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) images indicated that the LbL films were porous, with a large surface area due to interconnection of SWNT into PAMAM layers. This morphology was instrumental for the adsorption of a larger quantity of PEN, with the resulting LbL film being highly stable. The experiments to detect penicillin were performed with constant-capacitance (ConCap) and constant-current (CC) measurements for EIS and LAPS sensors, respectively, which revealed an enhanced detection signal and sensitivity of ca. 100 mV/decade for the field-effect sensors modified with the PAMAM/SWNT LbL film. It is concluded that controlling film morphology is essential for an enhanced performance of biosensors, not only in terms of sensitivity but also stability and response time.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983301
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 781
EP  - 786
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Huck, Christina
A1  - Poghossian, Arshak
A1  - Bäcker, Matthias
A1  - Reisert, Steffen
A1  - Schubert, J.
A1  - Zander, W.
A1  - Begoyan, Vardges K.
A1  - Buniatyan, V. V.
A1  - Schöning, Michael Josef
T1  - Chemical sensors based on a high-k perovskite oxide of barium strontium titanate
JF  - Procedia Engineering
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 for liquids. In this work, BST films have been applied as a sensitive transducer material for a label-free detection of adsorbed charged macromolecules (positively charged polyelectrolytes) and concentration of hydrogen peroxide vapor as well as protection insulator layer for a contactless electrolyte-conductivity sensor. The experimental results of characterization of individual sensors are presented. Special emphasis is devoted towards the development of a capacitively-coupled contactless electrolyte-conductivity sensor.
KW  - barium strontium titanate
KW  - high-k material
KW  - contactless conductivity sensor
KW  - multi-functional material
KW  - hydrogen peroxide
Y1  - 2014
U6  - https://doi.org/10.1016/j.proeng.2014.11.258
SN  - 1877-7058
N1  - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014>
VL  - 87
SP  - 28
EP  - 31
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Gossla, Ulrich
A1  - Buttel, Luc
A1  - Wahrmund, Holger
A1  - Mehlig, Bernd
T1  - Bemessung, Anwendung und Qualitätssicherung von Stahlfaserspritzbeton im Tunnelbau
JF  - Beton- und Stahlbetonbau
N2  - Die Spritzbetonbauweise hat sich im Tunnelbau seit Jahren bewährt. Spritzbeton wird als unbewehrter Beton, in Verbindung mit Bewehrung sowie als Stahlfaserspritzbeton eingesetzt. Bei den meisten Tunnelschalen aus Stahlfaserspritzbeton werden Stahlfasern derzeit nur als konstruktive Bewehrung verwendet. Die Faserzugabe führt zu einer nennenswerten Erhöhung der Bruchenergie und somit zu einer höheren Zähigkeit des sonst spröden Materials und damit zu einer höheren Sicherheit.

Stahlfaserspritzbeton kann auch anstelle von Spritzbeton mit statisch erforderlicher Mattenbewehrung eingesetzt werden. Die Bemessung erfolgt dann unter Berücksichtigung der Nachrisszugfestigkeit. Diese kann wie bei Stahlfaserbeton an Biegebalken ermittelt werden, die aus größeren Proben herausgesägt werden. Anhand von verschiedenen Beispielen werden die unterschiedlichen Anwendungen aufgezeigt und die dafür erforderlichen Prüfungen vorgestellt.
Y1  - 2010
U6  - https://doi.org/10.1002/best.200900688
SN  - 0005-9900
VL  - 105
IS  - 2
SP  - 92
EP  - 101
PB  - Ernst & Sohn
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Tran, L.
A1  - Waluga, C.
A1  - Behr, Marek
A1  - Oedekoven, B.
A1  - Mottaghy, K.
T1  - Model-based Numerical Analysis of Platelet Adhesion, Thrombus Growth and Aggregation for Assist Devices
JF  - The International Journal of Artificial Organs. 32 (2009), H. 7
Y1  - 2009
SN  - 0391-3988
N1  - Abstracts - Oral Presentations: XXXVI Annual ESAO Congress, 2-5 September 2009, Compiègne - France; European Society of Artificial Organs (ESAO), Compiegne, France, September 2-5, 2009
SP  - 398
EP  - 398
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schaub, A.
A1  - Zundel, A.
A1  - Beckers, Leah
A1  - Schubert, J.
A1  - Zander, W.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - Pulsed laser deposition as a novel thin film preparation method for silicon-based field effect sensors
JF  - Proceedings of the 25th European Solid State Device Research Conference : the Netherlands Congress Centre, The Hague, the Netherlands, 25th - 27th September 1995 / ESSDERC '95. Ed. by H. C. de Graaff
Y1  - 1995
SN  - 2-86332-182-X
N1  - ESSDERC ; (25, 1995, 's-Gravenhage) ; European Solid State Device Research Conference (ESSDERC) ; (25 : ; 1995.09.25-27 : ; Den Haag)
SP  - 601
EP  - 604
PB  - Ed. Frontières
CY  - Gif-sur-Yvette
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Behr, Marek
A1  - Arora, D.
A1  - Coronado, O.
A1  - Pasquali, M.
T1  - CFD Analysis of MicroMed Debakey Pump and Hemolysis Prediction / Behbahani, M. ; Behr, M. ; Arora, D. ; Coronado, O. ; Pasquali, M.
JF  - Artificial Organs. 30 (2006), H. 11
Y1  - 2006
SN  - 1525-1594
N1  - Abstracts 14th Congress of the International Society for Rotary Blood Pumps, Leuven, Belgium, August 31–September 2, 2006 ; S7-4
SP  - A45
EP  - A46
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Behr, Marek
A1  - Hormes, M.
A1  - Steinseifer, U.
A1  - Arora, D.
A1  - Coronado, O.
A1  - Pasquali, M.
T1  - A Review of Computational Fluid Dynamics Analysis of Blood Pumps
JF  - European Journal of Applied Mathematics. 20 (2009), H. 4
Y1  - 2009
SP  - 363
EP  - 397
PB  - Cambridge Univ. Press
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Tran, L.
A1  - Jockenhövel, S.
A1  - Behr, Marek
A1  - Mottaghy, K.
T1  - Numerical prediction of thrombocyte reactions for application to a vascular flow model
JF  - British Journal of Surgery
Y1  - 2011
SN  - 1365-2168
N1  - 46th Congress of the European Society for Surgical Research, Aachen, Germany, 25-28 May 2011 ; ESSR Abstracts 2011 ; Oral Sessions OP10-5
VL  - 98
IS  - S5
SP  - S17
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Ribitsch, Doris
A1  - Heumann, Sonja
A1  - Karl, Wolfgang
A1  - Gerlach, Jochen
A1  - Leber, R.
A1  - Birner-Gruenberger, R.
A1  - Gruber, K.
A1  - Eiteljoerg, I.
A1  - Remler, Peter
A1  - Siegert, Petra
A1  - Lange, J.
A1  - Maurer, Karl-Heinz
A1  - Berg, G.
A1  - Guebitz, G. M.
A1  - Schwab, H.
T1  - Extracellular serine proteases from Stenotrophomonas maltophilia: Screening, isolation and heterologous expression in E. coli
JF  - Journal of biotechnology
N2  - A large strain collection comprising antagonistic bacteria was screened for novel detergent proteases. Several strains displayed protease activity on agar plates containing skim milk but were inactive in liquid media. Encapsulation of cells in alginate beads induced protease production. Stenotrophomonas maltophilia emerged as best performer under washing conditions. For identification of wash-active proteases, four extracellular serine proteases called StmPr1, StmPr2, StmPr3 and StmPr4 were cloned. StmPr2 and StmPr4 were sufficiently overexpressed in E. coli. Expression of StmPr1 and StmPr3 resulted in unprocessed, insoluble protein. Truncation of most of the C-terminal domain which has been identified by enzyme modeling succeeded in expression of soluble, active StmPr1 but failed in case of StmPr3.

From laundry application tests StmPr2 turned out to be a highly wash-active protease at 45 °C. Specific activity of StmPr2 determined with suc-l-Ala-l-Ala-l-Pro-l-Phe-p-nitroanilide as the substrate was 17 ± 2 U/mg. In addition we determined the kinetic parameters and cleavage preferences of protease StmPr2.
KW  - Alginate beads
KW  - Stenotrophomonas maltophilia
KW  - Detergent protease
Y1  - 2012
U6  - https://doi.org/10.1016/j.jbiotec.2011.09.025
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - 157
IS  - 1
SP  - 140
EP  - 147
PB  - Elsevier
CY  - Amsterdam
ER  -