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  - Maiwald, Volker
A1  - Dachwald, Bernd
T1  - Mission design for a multiple-rendezvous mission to Jupiter's trojans
N2  - In this paper, we will provide a feasible mission design for a multiple-rendezvous mission to Jupiter's Trojans. It is based on solar electric propulsion, as being currently used on the DAWN spacecraft, and other flight-proven technology. First, we have selected a set of mission objectives, the prime objective being the detection of water -especially subsurface water -to provide evidence for the Trojans' formation at large solar distances. Based on DAWN and other comparable missions, we have determined suitable payload instruments to achieve these objectives. Afterwards, we have designed a spacecraft that is able to carry the selected payload to the Trojan region and rendezvous successively with three target bodies within a maximum mission duration of 15 years. Accurate low-thrust trajectories have been obtained with a global low-thrust trajectory optimization program (InTrance). During the transfer from Earth to the first target, the spacecraft is propelled by two RIT-22 ion engines from EADS Astrium, whereas a single RIT-15 is used for transfers within the Trojan region to reduce the required power. For power generation, the spacecraft uses a multi-junction solar array that is supported by concentrators. To achieve moderate mission costs, we have restricted the launch mass to a maximum of 1600 kg, the maximum interplanetary injection capability of a Soyuz/Fregat launcher. Our final layout has a mass of 1400 kg, yielding a margin of about 14%. Nestor (a member of the L4-population) was determined as the first mission target. It can be reached within 4.6 years from launch. The fuel mass ratio for this transfer is about 35%. The stay time at Nestor is 1.2 years. Eurymedon was selected as the second target (transfer time 3.5 years, stay time 3.0 years) and Irus as the third target (transfer time 2.2 years). The transfers within the Trojan L4-population can be accomplished with fuel mass ratios of about 3% for each trajectory leg. Including the stay times in orbit around the targets, the mission can be accomplished within a total duration of about 14.5 years. According to our mission analysis, it is also feasible to fly to the L5-population with similar flight times. It has to be noted that -for a first analysis -we have taken only the named targets into account. Allowing also rendezvous with unnamed objects will very likely decrease the mission duration. Based on a scaling of DAWN's mission costs (due to comparable scientific instruments and mission objectives), and taking into account the longer mission duration and the potential re-use of already developed technology, we have estimated that these three rendezvous can be accomplished with a budget of about 250 Million Euros, i.e. about 25% of ROSETTA's budget.
Y1  - 2010
N1  - 38th COSPAR Scientific Assembly. Held 18-15 July 2010,Bremen, Germany
SP  - 3
ER  - 
TY  - JOUR
A1  - Berretz, Frank
A1  - Skorupa, Sascha
A1  - Sander, Volker
A1  - Belloum, Adam
A1  - Bubak, Marian
T1  - Actor-Driven Workflow Execution in Distributed Environments
JF  - Euro-Par 2010 Parallel Processing Workshops : HeteroPAR, HPCC, HiBB, CoreGrid, UCHPC, HPCF, PROPER, CCPI, VHPC ; Ischia, Italy, August 31 - September 3, 2010 ; revised selected papers / Mario R. Guarracino ... (eds.)
Y1  - 2011
SN  - 978-3-642-21877-4
N1  - Lecture Notes in Computer Science ; 6586
SP  - 287
EP  - 294
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Geimer, Konstantin
A1  - Sauerborn, Markus
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, Mark
A1  - Göttsche, Joachim
T1  - Test facility for absorber specimens of solar tower power plants
JF  - Advances in Science and Technology
N2  - The Solar-Institute Jülich (SIJ) has initiated the construction of the first and only German solar tower power plant and is now involved in the accompanying research. The power plant for experimental and demonstration purposes in the town of Jülich started supplying electric energy in the beginning of 2008. The central receiver plant features as central innovation an open volumetric receiver, consisting of porous ceramic elements that simultaneously absorb the concentrated sunlight and transfer the heat to ambient air passing through the pores so that an average temperature of 680°C is reached. The subsequent steam cycle generates up to 1.5 MWe. A main field of research at the SIJ is the optimization of the absorber structures. To analyze the capability of new absorber specimens a special test facility was developed and set up in the laboratory. A high-performance near-infrared radiator offers for single test samples a variable and repeatable beam with a power of up to 320 kW/m² peak. The temperatures achieved on the absorber surface can reach more than 1000°C. To suck ambient air through the open absorber - like on the tower - it is mounted on a special blower system. An overview about the test facility and some recent results will be presented.
Y1  - 2010
U6  - https://doi.org/10.4028/www.scientific.net/AST.74.266
N1  - 5th Forum on New Materials : CIMTEC 2010, Montecatini Terme, Italy 13-18 June 2010. Part C
VL  - 74
SP  - 266
EP  - 271
PB  - Trans Tech Publications
CY  - Baech
ER  - 
TY  - JOUR
A1  - Gebhardt, Andreas
A1  - Schmidt, Frank-Michael
A1  - Hötter, Jan-Steffen
A1  - Sokalla, Wolfgang
A1  - Sokalla, Patrick
T1  - Additive manufacturing by selective laser melting the realizer desktop machine and its application for the dental industry
JF  - Physics Procedia
N2  - Additive Manufacturing of metal parts by Selective Laser Melting has become a powerful tool for the direct manufacturing of complex parts mainly for the aerospace and medical industry. With the introduction of its desktop machine, Realizer targeted the dental market. The contribution describes the special features of the machine, discusses details of the process and shows manufacturing results focused on metal dental devices.
KW  - scan strategy
KW  - dental bridges
KW  - cobald chrome
KW  - Selective Laser Melting (SLM)
KW  - additive manufacturing
Y1  - 2010
U6  - https://doi.org/10.1016/j.phpro.2010.08.082
SN  - 1875-3892
N1  - Laser Assisted Net Shape Engineering 6, Proceedings of the LANE 2010, Part 2
VL  - 5 B
IS  - 2
SP  - 543
EP  - 549
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Solarthermische Kraftwerke mit thermischen Speichern
JF  - Chemie Ingenieur Technik
N2  - Solarthermische Kraftwerke stellen eine bedeutende Technologieoption für einen nachhaltigen Energiemix der Zukunft dar. Sie konzentrieren die Strahlung der Sonne, erzeugen Wärme und wandeln diese mit konventioneller Kraftwerkstechnik in Strom um. Die Wärme kann auch gespeichert werden, so dass der Betrieb während des Durchzugs von Wolken möglich ist und bis in die Abendstunden hinein verlängert werden kann. Zu den solarthermischen Kraftwerken gehören neben der Parabolrinne und dem Solarturm der Fresnel-Kollektor und die Dish-Stirling-Systeme. Im Zuge einer späteren Vergrößerung des Solarfeldes von Solarkraftwerken kann mithilfe von thermischen Energiespeichern die solare Energieerzeugung bei gleichbleibender Kraftwerksleistung sukzessiv bis um den Faktor 3 erweitert werden. Es besteht so die Möglichkeit einer massiven Substitution von fossilen Brennstoffen.Bei den ersten solarthermischen Speichern für die SEGS-Parabolrinnekraftwerke wurde Öl als Speichermedium eingesetzt. Ein weiteres Speichermedium ist Salzschmelze, die im Andasol-1-Projekt in Spanien sowie bei Solarturmkraftwerken eingesetzt wird. Beton ist ein weiteres mögliches Speichermaterial für Parabolrinnensysteme. Eine weitere Alternative bei einem Solarturmkraftwerk mit Luft als Wärmeträgermedium ist die Verwendung von keramischen Feuerfestmaterialien in Form von Schüttungen oder stapelbaren, porösen Elementen. In Jülich wurde das weltweit erste solarthermische Turmkraftwerk mit einer Leistung von 1,5 MWe, das Luft als Wärmeträgermedium einsetzt und einen solchen Speicher verwendet, gebaut.
Y1  - 2010
SN  - 1522-2640
U6  - https://doi.org/10.1002/cite.201050678
N1  - Special Issue: ProcessNet-Jahrestagung 2010 und 28. Jahrestagung der Biotechnologen
VL  - 82
IS  - 9
SP  - 1606
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Schelthoff, Christof
A1  - Mathieu, Moritz
T1  - Probability of lightning strikes to air-terminations of structures using the electro-geometrical model theory and the statistics of lightning current parameters
JF  - Atmospheric Research. 104 (2011)
Y1  - 2011
SN  - 0169-8095
N1  - Article in Press
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Wurm, Patrick
T1  - Mission analysis and performance comparison for an Advanced Solar Photon Thruster
JF  - Advances in Space Research
Y1  - 2011
SN  - 0273-1177
VL  - 48
IS  - 11
SP  - 1858
EP  - 1868
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Scholz, Christina
A1  - Romagnoli, Daniele
A1  - Dachwald, Bernd
A1  - Theil, Stephan
T1  - Performance analysis of an attitude control system for solar sails using sliding masses
JF  - Advances in Space Research
Y1  - 2011
SN  - 0273-1177
VL  - 48
IS  - 11
SP  - 1822
EP  - 1835
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Bäcker, Matthias
A1  - Delle, L.
A1  - Poghossian, Arshak
A1  - Biselli, Manfred
A1  - Zang, Werner
A1  - Wagner, P.
A1  - Schöning, Michael Josef
T1  - Electrochemical sensor array for bioprocess monitoring
JF  - Electrochimica Acta (2011)
Y1  - 2011
VL  - 56
IS  - 26
SP  - 9673
EP  - 9678
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Gasparyan, Ferdinand V.
A1  - Poghossian, Arshak
A1  - Vitusevich, Svetlana A.
A1  - Petrychuk, Mykhaylo V.
A1  - Sydoruk, Viktor A.
A1  - Siqueira, José R. Jr.
A1  - Oliveira, Osvaldo N. Jr.
A1  - Offenhäusser, Andreas
A1  - Schöning, Michael Josef
T1  - Low-Frequency Noise in Field-Effect Devices Functionalized With Dendrimer/Carbon-Nanotube Multilayers
JF  - IEEE Sensors Journal. 11 (2011), H. 1
Y1  - 2011
SN  - 1530-437X
SP  - 142
EP  - 149
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Srivastava, Alok
A1  - Singh, Virendra
A1  - Aggarwal, Pranav
A1  - Schneeweiss, F.
A1  - Scherer, Ulrich W.
A1  - Friedrich, W.
T1  - Optical studies of insulating polymers for radiation dose monitoring
JF  - Indian Journal of Pure and Applied Physics
N2  - The optical study carried out on insulating polymers namely polyethyleneterephthalate (PET) and polyvinylchloride (PVC) has been described. The polymers are exposed to different radiation doses by exposing them to swift heavy ions of carbon (90 MeV), silicon (120 MeV) and nickel (100 MeV) which influence on their optical properties. The studies show that amongst the investigated polymers, PVC and PET have potential for application as dosimeter beyond a threshold dose which is strongly dependent on the nature of the material and the radiation type. The optical micrographs show a distinct change in colour of the sample with increase in radiation dose.
Y1  - 2010
SN  - 0019-5596
N1  - Special Issue: SI
VL  - 48
IS  - 11
SP  - 782
EP  - 786
PB  - Council Of Scientific And Industrial Research (CSIR), National Institute Of Science Communication and Policy Research (NIScPR)
CY  - New Delhi
ER  - 
TY  - JOUR
A1  - Malzahn, Kerstin
A1  - Windmiller, Joshua Ray
A1  - Valdés-Ramírez, Gabriela
A1  - Wang, Joseph
A1  - Schöning, Michael Josef
T1  - Wearable electrochemical sensors for in situ analysis in marine environments
JF  - Analyst. 136 (2011), H. 14
Y1  - 2011
SN  - 0003-2654
SP  - 2912
EP  - 2917
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Kurulgan Demirci, Eylem
A1  - Demirci, T.
A1  - Trzewik, Jürgen
A1  - Linder, Peter
A1  - Karakulah, G.
A1  - Artmann, Gerhard
A1  - Sakizli, M.
A1  - Temiz Artmann, Aysegül
T1  - Genome-Wide Gene Expression Analysis of NIH 3T3 Cell Line Under Mechanical Stimulation
JF  - Cellular and molecular bioengineering. 4 (2011), H. 1
Y1  - 2011
SN  - 1865-5025
SP  - 46
EP  - 55
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Damm, Alexander
A1  - Erler, André
A1  - Hillen, Walter
A1  - Meroni, Michele
A1  - Schaepman, Michael E.
A1  - Verhoef, Wout
A1  - Rascher, Uwe
T1  - Modeling the impact of spectral sensor configurations on the FLD retrieval accuracy of sun-induced chlorophyll fluorescence
JF  - Remote Sensing of Environment
Y1  - 2011
SN  - 0034-4257
VL  - 115
IS  - 8
SP  - 1882
EP  - 1892
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Eijck, Lambert van
A1  - Demmel, Franz
A1  - Artmann, Gerhard
A1  - Stadtler, Andreas Maximilian
T1  - Macromolecular dynamics in red blood cells investigated using neutron spectroscopy
JF  - Journal of the Royal Society Interface
Y1  - 2011
SN  - 1742-5689
VL  - 8
IS  - 57
SP  - 590
EP  - 600
PB  - The Royal Society
CY  - London
ER  - 
TY  - JOUR
A1  - Robinson, A. E.
A1  - Funke, Harald
A1  - Hendrick, P.
T1  - Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fueled µ-Scale Gas Turbine
JF  - Journal of engineering for gas turbines and power
Y1  - 2011
SN  - 1528-8919
VL  - 133
IS  - 8
PB  - ASME
CY  - New York
ER  - 
TY  - JOUR
A1  - Timme, Michael
T1  - Anmerkung zu BGH IX ZR 176/10 :Vollstreckungsrechtlicher Erstattungsanspruch nach Urteilsaufhebung - Gerichtsstand
JF  - Neue Juristische Wochenschrift NJW. 41 (2011), H. 34
Y1  - 2011
SN  - 0341-1907
SP  - 2521
EP  - 2522
PB  - Beck
CY  - München
ER  - 
TY  - JOUR
A1  - Herzwurm, Georg
A1  - Fehlmann, Thomas
A1  - Pietsch, Wolfram
A1  - Schockert, Sixten
T1  - Der Qualität ein Haus. Best-Practice-Analyse des Quality Function Deployments
JF  - Qualität und Zuverlässigkeit : QZ
Y1  - 2011
SN  - 0720-1214
VL  - 56
IS  - 8
SP  - 23
EP  - 27
PB  - Hanser
CY  - München
ER  - 
TY  - JOUR
A1  - Martins, Berta M.
A1  - Blaser, Martin
A1  - Feliks, Mikolaj
A1  - Ullmann, Matthias G.
A1  - Buckel, Wolfgang
A1  - Selmer, Thorsten
T1  - Structural basis for a Kolbe-type decarboxylation catalyzed by a glycyl radical enzyme
JF  - Journal of the American Chemical Society
Y1  - 2011
N1  - Just accepted manuscript
SP  - 1
EP  - 33
PB  - ACS Publications
CY  - Washington, DC
ER  -