TY  - JOUR
A1  - Ferrein, Alexander
A1  - Dylla, Frank
A1  - Lakemeyer, Gerhard
T1  - Specifying Multirobot Coordination in ICPGolog - From Simulation towards Real Robots / Dylla, Frank ; Ferrein, Alexander ; Lakemeyer, Gerhard
Y1  - 2003
N1  - AOS-4 at IJCAI-03
SP  - 1
EP  - 10
ER  - 
TY  - JOUR
A1  - Ermelenko, Y.
A1  - Yoshinobu, T.
A1  - Mourzina, Y.
A1  - Schöning, Michael Josef
A1  - Furuichi, K.
A1  - Levichev, S.
A1  - Vlasov, Y.
A1  - Iwasaki, H.
T1  - The double K+/Ca2+ sensor based on laser scanned silicon transducer (LSST) for multicomponent analysis
JF  - Talanta. 59 (2003), H. 4
Y1  - 2003
SN  - 0039-9140
SP  - 785
EP  - 795
ER  - 
TY  - JOUR
A1  - Enning, Manfred
A1  - Mann, S.
A1  - Bollig, A.
A1  - Kaierle, S.
T1  - Autonomous Production Cell for Laser Beam Welding / Mann S. ; Bollig, A. ; Kaierle, S. ; Abel, D. ; Poprawe, R.
Y1  - 2003
SN  - 0912035757
N1  - ICALEO 2003, Florida  ; Laser Materials Processing Conference ; (2003, Jacksonville, Fla.) ; ICALEO ; (22, 2003, Jacksonville, Fla.)
PB  - LIA
CY  - Orlando, Fla
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, Wolfgang
T1  - Solar sailcraft of the first generation technology development / Seboldt, Wolfgang ; Dachwald, Bernd
Y1  - 2003
N1  - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-S.03
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, Wolfgang
T1  - Solar sailcraft of the first generation mission applications to near-earth asteroids
Y1  - 2003
N1  - 54th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law 29 September - 3 October 2003, Bremen, Germany IAC-03-Q.5.06
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Seboldt, W.
A1  - Richter, L.
T1  - Multiple Rendezvous and Sample Return Missions to Near-Earth Asteroids Using Solar Sailcraft
JF  - Proceedings of the Fifth IAA International Conference on Low Cost Planetary Missions : 24 - 26 September 2003, ESTEC, Noordwijk, the Netherlands / [comp. by R. A. Harris]
Y1  - 2003
SN  - 92-9092-853-0
N1  - International Conference on Low Cost Planetary Missions <5, 2003, Noordwijk> ; International Academy of Astronautics ; European Space Research and Technology Centre
SP  - 351
EP  - 358
PB  - ESA
CY  - Noordwijk
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Schmidt, Tanja D.
A1  - Seboldt, Wolfgang
A1  - Auweter-Kurtz, 
T1  - Flight Opportunities from Mars to Earth for Piloted Missions Using Continuous Thrust Propulsion / Schmidt, Tanja D. ; Dachwald, Bernd ; Seboldt, Wolfgang ; Auweter-Kurtz, Monika
Y1  - 2003
N1  - 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
20-23 July 2003, Huntsville, Alabama ; AIAA 2003-4573
SP  - 1
EP  - 9
PB  - -
ER  - 
TY  - JOUR
A1  - Dachwald, Bernd
A1  - Leipold, M.
A1  - Fichtner, H.
T1  - Heliopause Explorer - A Sailcraft Mission to the Outer Boundaries of the Solar System / M. Leipold ; H. Fichtner ; B. Heber  ... B. Dachwald ...
JF  - Proceedings of the Fifth IAA International Conference on Low Cost Planetary Missions : 24 - 26 September 2003, ESTEC, Noordwijk, the Netherlands / [comp. by R. A. Harris]
Y1  - 2003
SN  - 92-9092-853-0
N1  - International Conference on Low Cost Planetary Missions <5, 2003, Noordwijk> ; International Academy of Astronautics ; European Space Research and Technology Centre
SP  - 367
EP  - 375
PB  - ESA
CY  - Noordwijk
ER  - 
TY  - JOUR
A1  - Claessens, J.
A1  - Fuchsberger, A.
A1  - Günther, C.
A1  - Horn, G.
A1  - Howker, K.
A1  - Hulsebosch, R.J.
A1  - Mitchell, C.
A1  - Paterson, K.
A1  - Preneel, B.
A1  - Schellekens, D.
A1  - Schuba, Marko
T1  - Pioneering Advanced Mobile Privacy and Security
Y1  - 2003
N1  - electronic proceedings of the 18th IFIP International Information Security Conference, Athens, Greece, May 2003
SP  - 1
EP  - 17
ER  - 
TY  - JOUR
A1  - Bressel, A.
A1  - Schultze, J.W.
A1  - Khan, W.
A1  - Wolfaardt, G. M.
A1  - Rohns, H.-P.
A1  - Irmscher, R.
A1  - Schöning, Michael Josef
T1  - High resolution gravimetric, optical and electrochemical investigations of microbial biofilm formation in aqueous systems
JF  - Electrochimica Acta. 48 (2003), H. 20-22
Y1  - 2003
SN  - 0013-4686
SP  - 3363
EP  - 3372
ER  - 
TY  - JOUR
A1  - Bohn, Dieter
A1  - Funke, Harald
T1  - Experimental investigations into the nonuniform flow in a 4-stage turbine with special focus on the flow equalization in the first turbine stage
JF  - ASME TURBO EXPO, Proceedings of the ASME Turbo Expo, 2003
Y1  - 2003
SN  - 0-7918-3689-4
N1  - ASME TURBO EXPO 2003, Proceedings, Vol. 6: Turbomachinery, Pt. A, Atlanta, US, Jun 16-19, 2003
SP  - 281
EP  - 289
ER  - 
TY  - JOUR
A1  - Biener, Ernst
A1  - Sasse, T.
A1  - Wernhoff, T.
T1  - Using harbour dredged material for combination sealing of the former Bockhorner Weg disposal site in Bremen, Germany
JF  - Proceedings of the International Harbour Congress. 13 (2003)
Y1  - 2003
N1  - International Harbour Congress <13, 2003, Antwerpen>
SP  - 101
EP  - 109
ER  - 
TY  - JOUR
A1  - Biener, Ernst
A1  - Bethke, H.
A1  - Sasse, T.
A1  - Wernhoff, T.
T1  - Alternative landfill capping using locally available recycled material
JF  - Land contamination & reclamation. 14 (2003), H. 4
Y1  - 2003
SN  - 0967-0513
SP  - 419
EP  - 427
ER  - 
TY  - JOUR
A1  - Baroud, G.
A1  - Wu, J.Z.
A1  - Bohner, M
A1  - Sponagel, Stefan
A1  - Steffen, T.
T1  - How to determine the permeability for cement infiltration into osteoporotic cancellous bone
JF  - Medical Engineering & Physics. 25 (2003), H. 4
N2  - Cement augmentation is an emerging surgical procedure in which bone cement is used to infiltrate and reinforce osteoporotic vertebrae. Although this infiltration procedure has been widely applied, it is performed empirically and little is known about the flow characteristics of cement during the injection process. We present a theoretical and experimental approach to investigate the intertrabecular bone permeability during the infiltration procedure. The cement permeability was considered to be dependent on time, bone porosity, and cement viscosity in our analysis. In order to determine the time-dependent permeability, ten cancellous bone cores were harvested from osteoporotic vertebrae, infiltrated with acrylic cement at a constant flow rate, and the pressure drop across the cores during the infiltration was measured. The viscosity dependence of the permeability was determined based on published experimental data. The theoretical model for the permeability as a function of bone porosity and time was then fit to the testing data. Our findings suggest that the intertrabecular bone permeability depends strongly on time. For instance, the initial permeability (60.89 mm4/N.s) reduced to approximately 63% of its original value within 18 seconds. This study is the first to analyze cement flow through osteoporotic bone. The theoretical and experimental models provided in this paper are generic. Thus, they can be used to systematically study and optimize the infiltration process for clinical practice.
KW  - Osteoporose
KW  - Permeabilität
KW  - Viskose Strömung
KW  - Viskosität
KW  - Vertebroplastie
KW  - Cement infiltration
KW  - Vertebroplasty
KW  - Osteoporosis
KW  - Permeability
KW  - Experiment
KW  - Analysis
KW  - Viscous flow
Y1  - 2003
SN  - 1350-4533
SP  - 283
EP  - 288
ER  -