TY - GEN A1 - Nam, J. A1 - Arora, D. A1 - Behbahani, Mehdi A1 - Probst, M. A1 - Benkowski, R. A1 - Behr, Marek A1 - Pasquali, M. T1 - New computational method in hemolysis analysis for artificial heart pump T2 - ASAIO Journal N2 - The MicroMed DeBakey ventricular assist device is an axial flow pump designed for providing long-term support to end-stage heartfailure patients. Previously, we presented computational analysis of the blood pump flow. From the analysis, we were able to identify regions of high shear and recirculating flow that may cause blood damage, for example, deformation and fragmentation of the red blood cell (RBC). This mechanical hemolysis can be predicted using a tensor-based blood damage model that is based on the physical properties of the RBCs, for example, the relaxation time of the RBC membrane. However, an extensive and detailed analysis was complicated by the fact that the previous method predicts hemolysis along a finite number of pathlines traversed by the RBCs, possibly omitting parts of the flow domain. Furthermore, it is computationally expensive and is not easily parallelizable. Here, we propose a new method to estimate hemolysis. The method is based on treating the shape of droplet (tensor) as a field variable, like velocity in the Navier-Stokes system. The governing equation for the RBC shape is treated by least-squares finite element method and the volume conservation of the RBC is augmented by Lagrangian multiplier. Unlike the previous method, the proposed method can visualize areas of high RBC strain that is potentially dangerous for mechanical hemolysis. Also, the amount of plasma-free hemoglobin and, consequently, normalized index of hemolysis can be computed as a byproduct. The method is tested in a simple shear flow for validation and an artery graft flow is chosen to show its potential usefulness. Finally, the method is applied to the blood damage estimation for the pump. Y1 - 2010 U6 - https://doi.org/10.1097/01.mat.0000369377.65122.a3 N1 - 56th Annual Conference of the American Society for Artificial Internal Organs (ASAIO), May 27 - 29, 2010, Baltimore, Maryland VL - 56 IS - 2 SP - 98 PB - Lippincott Williams & Wilkins CY - Philadelphia ER - TY - CHAP A1 - Bitz, Andreas A1 - Kraff, O. A1 - Orzada, S. A1 - Maderwald, S. A1 - Brote, Irina A1 - Ladd, M. T1 - Experimental and Numerical Assessment of RF Safety of Transmit Coils at 7 Tesla T2 - ISMRM workshop on MR safety 2010 : RF heating of the human in MRI : workshop series. The Washington County Historic Courthouse, Stillwater, Minnesota, USA, 15 - 17 October 2010 Y1 - 2010 SN - 978-1-62276-088-6 SP - 195 ER - TY - CHAP A1 - Buda, Aurel A1 - Schürmann, Volker A1 - Wollert, Jörg F. T1 - Wireless technologies in factory automation T2 - Factory automation / ed. by Javier Silvestre-Blanes Y1 - 2010 SN - 978-953-7619-42-8 SP - 29 EP - 50 PB - Intech CY - London ER - TY - CHAP A1 - Schürmann, Volker A1 - Buda, Aurel A1 - Jonker, Stefan A1 - Palmhof, Norman A1 - Wollert, Jörg F. T1 - Wireless in future automotive applications T2 - Mobile and wireless communications network layer and circuit level design / ed. by Salma Ait Fares ... Y1 - 2010 SN - 978-953-307-042-1 SP - 71 EP - 92 PB - Intech CY - London ER - TY - CHAP A1 - Schürmann, Volker A1 - Keller, A. A1 - Wollert, Jörg F. T1 - Gebäudeautomation mit Webtechnologien : ein Erfahrungsbericht T2 - Automation 2010 : der 11. Branchentreff der Mess- und Automatisierungstechnik ; Kongress Baden-Baden, 15. und 16. Juni 2010. (VDI-Berichte ; 2092) Y1 - 2010 SN - 978-3-18-092092-4 SP - 321 EP - 324 PB - VDI-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Leidinger, Rafael A1 - Schürmann, Volker A1 - Wollert, Jörg F. A1 - Schneider, Christoph T1 - Entwicklungsprojekt BASic - Bluetooth Authentication Service T2 - Wireless Technologies : 12. Kongress, 22. - 23. September 2010, Bochum ; von der Technologie zur Anwendung / Jörg F. Wollert (Hrsg.) (Fortschritt-Berichte VDI : Reihe 10, Informatik, Kommunikation ; 810) Y1 - 2010 SN - 978-3-18-381010-9 SP - 296 EP - 303 PB - VDI-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Buck, Reiner A1 - Wurmhöringer, Klaus A1 - Lehle, Robert A1 - Pfahl, Andreas A1 - Göttsche, Joachim A1 - Meyr, T. T1 - Development of a 30m2 heliostat with hydraulic drive T2 - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 74 EP - 75 PB - Soc. OSC CY - Saint Maur ER - TY - JOUR A1 - Buniatyan, Vahe Vazgen 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 - BOOK A1 - Gebhardt, Wolfram A1 - Wollert, Jörg F. T1 - Das Funkbuch : Evolution und Kommunikation / [hrsg. von der Steute Schaltgeräte GmbH & Co. KG, Löhne, Geschäftsbereich Wireless. Autoren: Wolfram Gebhardt und Jörg F. Wollert] Y1 - 2010 SN - 978-3-00-032905-0 PB - Steute CY - Löhne ER - TY - CHAP A1 - Stieglitz, Kristian A1 - Wollert, Jörg F. T1 - Database driven modernization and expansion of storage systems T2 - Proceedings : the 3rd International Multi-Conference on Engineering and Technological Innovation : June 29th - July 2nd, 2010, Orlando, Florida, USA ; vol. 2 Y1 - 2010 SN - 978-1-936338-03-0 SP - 180 EP - 183 PB - IIIS CY - Winter Garden, Fla. ER -