TY  - JOUR
A1  - Schöning, Michael Josef
T1  - Silicon-based biochemical sensors
JF  - CNI - The Center of Nanoelectronic Systems for Information Technology
Y1  - 2003
SP  - 165
EP  - 170
PB  - Foschungszentrum Jülich
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - GSOLT: the calibration procedure for all multi-port vector network analyzers
JF  - IEEE MTT-S International Microwave Symposium digest : Philadelphia, Pennsylvania, 8 - 13 June 2003 ; [including: 2003 International Microwave Symposium digest, vol. 1-3, RF Integrated Circuit Symposium digest, Automatic RF Techniques Group Symposium digest . Vol. 3
Y1  - 2003
SN  - 0-780-37696-X
N1  - Nebent.: 2003 IEEE MTT-S International Microwave Symposium
SP  - 1815
EP  - 1818
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Picard, Antoni
A1  - Brill, Manfred
A1  - Cassel, Detlef (u.a.)
T1  - The Virtual Cleanroom – a new tool in teaching MST process technologies
JF  - mst news International newsletter on micro - nano Integration (2003)
Y1  - 2003
SN  - 0948-3128
SP  - 35
EP  - 36
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  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Picard, Antoni
A1  - Brill, Manfred
A1  - Cassel, Detlev
A1  - Jentsch, Andreas
A1  - Merten, Sabine
A1  - Rollwa, Markus
T1  - The Virtual Clean Room - a new tool in teaching MST process technologies
N2  - The Virtual Clean Room - a new tool in teaching MST process technologies University education in high-technology fields like MST is not complete without intensive laboratory sessions. Students cannot fully grasp the complexity and the special problems related to the manufacturing of microsystems without a thorough hands-on experience in a MST clean room.
KW  - Virtuelle Maschine
KW  - VM
KW  - Mikrosystemtechnik
KW  - MST
KW  - virtual clean room
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Shakedown and ratchetting under tension-torsion loadings: analysis and experiments
N2  - Structural design analyses are conducted with the aim of verifying the exclusion of ratchetting. To this end it is important to make a clear distinction between the shakedown range and the ratchetting range. The performed experiment comprised a hollow tension specimen which was subjected to alternating axial forces, superimposed with constant moments. First, a series of uniaxial tests has been carried out in order to calibrate a bounded kinematic hardening rule. The load parameters have been selected on the basis of previous shakedown analyses with the PERMAS code using a kinematic hardening material model. It is shown that this shakedown analysis gives reasonable agreement between the experimental and the numerical results. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis.
KW  - Einspielen <Werkstoff>
KW  - Einspielen
KW  - Ratchetting
KW  - Zug-Druck Belastung
KW  - shakedown
KW  - ratchetting
KW  - tension–torsion loading
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Grap, Rolf Dietmar
T1  - Determining manpower requirements in a spinning mill
JF  - Chemical fibers international : CFI ; fiber polymers, fibers, texturing, and spunbonds (2003)
Y1  - 2003
SN  - 0340-3343
SP  - 455
EP  - 458
ER  - 
TY  - JOUR
A1  - Pietsch, Wolfram
A1  - Herzwurm, G.
T1  - QFD for Customer-Focused Requirements Engineering / Herzwurm, G., Pietsch, W.
JF  - Proceedings : 8 - 12 September 2003, Monterey Bay, California, USA / sponsored by IEEE Computer Society Technical Council on Software Engineering (TCSE) ... In cooperation with ACM SigSOFT
Y1  - 2003
SN  - 0769519806
N1  - International Requirements Engineering Conference ; (11, 2003, Monterey, Calif.)
SP  - 330
EP  - 338
PB  - IEEE Computer Society
CY  - Los Alamitos, Calif. [u.a.]
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  - 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  - Staat, Manfred
A1  - Heitzer, M.
A1  - Reiners, H.
A1  - Schubert, F.
T1  - Shakedown and ratchetting under tension–torsion loadings: analysis and experiments
JF  - Nuclear Engineering and Design. 225 (2003), H. 1
Y1  - 2003
SN  - 0029-5493
SP  - 11
EP  - 26
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Schwartz, M.
A1  - Lang, H.
A1  - Wirtz, K.
A1  - Heitzer, M.
T1  - Design by Analysis of Pressure Components by non-linear Optimization
JF  - The 10th International Conference on Pressure Vessel Technology, July 7-10, 2003, Vienna, Austria, Proceedings ICPVT-10 / Zeman, J. L. [ed]
Y1  - 2003
SN  - 3950152814
SP  - 59
EP  - 65
PB  - ÖGS, Österreichische Gesellschaft für Schweißtechnik
CY  - Wien
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Heitzer, M.
T1  - Probabilistic limit and shakedown problems
JF  - Numerical Methods for Limit and Shakedown Analysis. Deterministic and Probabilistic Approach. NIC Series Vol. 15 / Ed. by Staat, M; Heitzer, M.
Y1  - 2003
SN  - 3-00-010001-6
SP  - 217
EP  - 268
PB  - John von Neumann Institute for Computing (NIC)
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Keusgen, M.
A1  - Jünger, M.
A1  - Krest, I.
A1  - Schöning, Michael Josef
T1  - Development of a biosensor specific for cysteine sulfoxides
JF  - Biosensors & Bioelectronics. 18 (2003), H. 5-6
Y1  - 2003
SN  - 0956-5663
SP  - 805
EP  - 812
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  - Wang, J.
A1  - Krause, R.
A1  - Block, K.
A1  - Musameh, M.
A1  - Mulchandani, A.
A1  - Schöning, Michael Josef
T1  - Flow injection amperometric detection of OP nerve agents based on organophosphorus-hydrolase biosensor detector
JF  - Biosensors & Bioelectronics. 18 (2003), H. 2-3
Y1  - 2003
SN  - 0956-5663
SP  - 255
EP  - 260
ER  - 
TY  - JOUR
A1  - Keusgen, Michael
A1  - Jünger, Martina
A1  - Krest, Ingo
A1  - Schöning, Michael Josef
T1  - Biosensoric detection of the cysteine sulphoxide alliin
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 297
EP  - 302
ER  - 
TY  - JOUR
A1  - Yoshinobu, T.
A1  - Schöning, Michael Josef
A1  - Otto, R.
A1  - Furuichi, K.
A1  - Mourzina, Y.
A1  - Ermelenko, Y.
A1  - Iwasaki, H.
T1  - Portable light-addressable potentiometric sensor (LAPS) for multisensor applications
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 352
EP  - 356
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Berndsen, Lars
A1  - Schöning, Michael Josef
T1  - Chemical sensor as physical sensor: ISFET-based flowvelocity, flow-direction and diffusion-coefficient sensor
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 384
EP  - 390
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Krause, R.
A1  - Block, K.
A1  - Musahmeh, M.
A1  - Mulchandani, A.
A1  - Wang, J.
T1  - A dual amperometric/potentiometric FIA-based biosensor for the distinctive detection of organophosphorus pesticides
JF  - Sensors and Actuators B. 95 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 291
EP  - 296
ER  - 
TY  - JOUR
A1  - Mourzina, Y.
A1  - Mai, T.
A1  - Poghossian, Arshak
A1  - Ermolenko, Y.
A1  - Yoshinobu, T.
A1  - Vlasov, Y.
A1  - Iwasaki, H.
A1  - Schöning, Michael Josef
T1  - K+-selective field-effect sensors as transducers for bioelectronic applications
JF  - Electrochimica Acta. 48 (2003), H. 20-22
Y1  - 2003
SN  - 0013-4686
SP  - 3333
EP  - 3339
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Schultze, J. W.
A1  - Schöning, Michael Josef
T1  - Application of a (bio-)chemical sensor (ISFET) for the detection of physical parameters in liquids
JF  - Electrochimica Acta. 48 (2003), H. 20-22
Y1  - 2003
SP  - 3289
EP  - 3297
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  - Simonis, A.
A1  - Lüth, H.
A1  - Wang, J.
A1  - Schöning, Michael Josef
T1  - Strategies of miniaturised reference electrodes integrated in a silicon-based „one chip“ pH sensor
JF  - Sensors. 3 (2003), H. 9
Y1  - 2003
SN  - 1424-8220
SP  - 330
EP  - 339
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Yoshinobu, Tatsuo
A1  - Schöning, Michael Josef
T1  - Flow-velocity microsensors based on semiconductor field-effect structures
JF  - Sensors. 3 (2003), H. 7
Y1  - 2003
SN  - 1424-8220
SP  - 202
EP  - 212
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Arzdorf, M.
A1  - Mulchandani, P.
A1  - Chen, W.
A1  - Mulchandani, A.
T1  - Towards a capacitive enzyme sensor for direct determination of organophosphorus pesticides: Fundamentals studies and aspects of development
JF  - Sensors. 3 (2003), H. 6
Y1  - 2003
SN  - 1424-8220
SP  - 119
EP  - 127
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Arzdorf, M.
A1  - Mulchandani, P.
A1  - Chen, W.
A1  - Mulchandani, A.
T1  - A capacitive field-effect sensor for the direct determination of organophosphorus pesticides
JF  - Sensors and Actuators B. 91 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 92
EP  - 97
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Schultze, J. W.
A1  - Schöning, Michael Josef
T1  - Multi-parameter detection of (bio-)chemical and physical quantities using an identical transducer principle
JF  - Sensors and Actuators B. 91 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 83
EP  - 91
ER  - 
TY  - JOUR
A1  - Mourzina, Y. G.
A1  - Ermelenko, Y. E.
A1  - Yoshinobu, T.
A1  - Vlasov, Y.
A1  - Iwasaki, H.
A1  - Schöning, Michael Josef
T1  - Anionselective light-addressable potentiometric sensors (LAPS) for the determination of nitrate and suphate ions
JF  - Sensors and Actuators B. 91 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 32
EP  - 38
ER  - 
TY  - JOUR
A1  - Simonis, A.
A1  - Ruge, C.
A1  - Müller-Veggian, Mattea
A1  - Lüth, H.
A1  - Schöning, Michael Josef
T1  - A long-term stable macroporoustype EIS structure for electrochemical sensor applications
JF  - Sensors and Actuators B. 91 (2003), H. 1-3
Y1  - 2003
SN  - 0925-4005
SP  - 21
EP  - 25
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Poghossian, Arshak
A1  - Schultze, Joachim W.
T1  - Measuring seven parameters by two ISFET modules in a microcell set-up
JF  - Int. Journal of Computational Engineering Science. 4 (2003), H. 2
Y1  - 2003
SN  - 1465-8763
SP  - 257
EP  - 260
ER  - 
TY  - JOUR
A1  - Weigand, Christoph
T1  - Technically Optimal Inspection Policy with Arithmetical Adaption
JF  - IMA Journal of Management Mathematics. 14 (2003), H. 4
Y1  - 2003
SN  - 1471-678X
N1  - weitere ISSN 1471-6798 (E)
SP  - 357
EP  - 371
ER  - 
TY  - JOUR
A1  - Weigand, Christoph
T1  - Economically Optimal Inspection Policy with Geometrical Adaption
JF  - Journal of Applied Statistics. 30 (2003), H. 5
Y1  - 2003
SN  - 0266-4763
N1  - weitere ISSN 1360-0532 (E)
SP  - 555
EP  - 569
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Schöning, Michael Josef
T1  - "High-order” hybrid FET module for (bio)chemical and physical sensing
JF  - Integrated analytical systems / ed. by Salvador Alegret
Y1  - 2003
SN  - 0-444-51037-0
SP  - 587
EP  - 623
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Yoshinobu, T.
A1  - Ermelenko, Y.
A1  - Mourzina, Y.
A1  - Schöning, Michael Josef
A1  - Iwasaki, H.
A1  - Vlasov, Y.
T1  - Multi-component analysis based on the light-addressable potentiometric sensor (LAPS)
JF  - Proceedings : 11th international conference Sensor 2003; 13 - 15 May 2003, Exhibition Centre Nuremberg, Germany
Y1  - 2003
N1  - Internationale Messe mit Kongress Sensor <11, 2003, Nürnberg>
SP  - 141
EP  - 144
PB  - AMA Service
CY  - Wunstorf
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
T1  - Silicon-based field-effect structures – From dielectrics to bioelectronics
JF  - Dielectrics in emerging technologies : proceedings of the international symposium ; [papers presented at the First International Symposium on Science and Technology of Dielectrics in Emerging Fields held from 27th April to 2nd May 2003 in Paris, France] / sponsoring divisions: Dielectric Science and Technology, Electronics. Ed.: D. Misra.
Y1  - 2003
SN  - 1-56677-346-6
N1  - International Symposium on Science and Technology of Dielectrics in Emerging Fields ; (1, 2003, Paris)
SP  - 31
EP  - 37
PB  - Electrochemical Society
CY  - Pennington, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Layer Deposition I
JF  - Fundamentals of nanoelectronics / Stefan Blügel ... (ed.). - (Lecture manuscripts of the ... Spring School of the Department of Solid State Research ; 34). - (Schriften des Forschungszentrums Jülich : Materie und Material ; 14 ; 34)
Y1  - 2003
SN  - 3-89336-319-X
SP  - C2.1
EP  - C2.13
PB  - Forschungszentrum, Zentralbibliothek
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kiesslich, G.
A1  - Wacker, A.
A1  - Scholl, E.
T1  - Nonlinear charging effect of quantum dots in a p-i-n diode. Kiesslich, G.; Wacker, A.; Scholl, E.; Vitusevich, S.A.; Belyaev, A.E.; Danylyuk, S.V.; Forster, A.; Klein, N.; Henini, M.
JF  - Physical Review B. 68 (2003)
Y1  - 2003
SN  - 1550-235X
N1  - 125331 (6 Seiten)
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
T1  - Education and Training in MST. Kämper, K.-P.; Picard, A.; Brill, M.; Cassel, D.; Jentsch, A.; Merten, S.; Rollwa, M.
JF  - Mst-News (2003)
Y1  - 2003
SN  - 0948-3128
SP  - 35
ER  - 
TY  - JOUR
A1  - Maezawa, Koichi
A1  - Förster, Arnold
T1  - Quantum transport devices based on resonant tunneling
JF  - Nanoelectronics and information technology : advanced electronic materials and novel devices / Rainer Waser (ed.).
Y1  - 2003
SN  - 3-527-40363-9
SP  - 407
EP  - 424
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Hetzel, Marc
A1  - Brock, Matthias
A1  - Pierik, Antonio J.
T1  - Acryloyl-CoA reductase from Clostridium propionicum. An enzyme complex of propionyl-CoA dehydrogenase and electron-transferring flavoprotein  / Hetzel, Marc ; Brock, Matthias ; Selmer, Thorsten, Pierik, Antonio J. ; Golding, Bernard T. ; Buckel, Wolfgang
JF  - European Journal of Biochemistry. 270 (2003), H. 5
Y1  - 2003
SN  - 0014-2956
SP  - 902
EP  - 910
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Darley, Dan J.
A1  - Clegg, William
A1  - Harrington, Ross W.
T1  - Stereocontrolled Synthesis of (2R,3S)-2-Methylisocitrate, a Central Intermediate in the Methylcitrate Cycle / Darley, Dan J. ; Selmer, Thorsten ; Clegg, William ; Harrington, Ross W. ; Buckel, Wolfgang ; Golding, Bernardt
JF  - Helvetica chimica acta. 86 (2003), H. 12
Y1  - 2003
SN  - 1522-2675
SP  - 3991
EP  - 3999
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Thamer, Wiebke
A1  - Cirpus, Irina
A1  - Hans, Marcus
T1  - A two [4Fe-4S]-cluster-containing ferredoxin as an alternative electron donor for 2-hydroxyglutaryl-CoA dehydratase from Acidaminococcus fermentans / Thamer, Wiebke ; Cirpus, Irina ; Hans, Marcus ; Pierik, Antonio, J. ; Selmer, Thorsten ; Bill, Eckhard ;
JF  - Archives of Microbiology. 179 (2003), H. 3
Y1  - 2003
SN  - 1432-072X
SP  - 197
EP  - 204
ER  - 
TY  - JOUR
A1  - Kallweit, Stephan
A1  - Schimpf, Axel
T1  - Photogrammetric Particle Image Velocimetry / Schimpf, Axel ; Kallweit, Stephan
JF  - Particle image velocimetry : recent improvements; proceedings of the Europiv 2 Workshop held in Zaragoza, Spain, March 31 - April 1, 2003 / edited by M. Stanislas ...
Y1  - 2003
SN  - 3-540-21423-2
SP  - 295
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Öhlschläger, Peter
A1  - Osen, Wolfram
A1  - Dell, Kerstin
A1  - Faath, Stefan
T1  - Human papillomavirus type 16 L1 capsomeres induce L1-specific cytotoxic T lymphocytes and tumor regression in C57BL/6 mice / Öhlschläger, Peter ; Osen, Wolfram ; Dell, Kerstin ; Faath, Stefan ; Garcea Robert L: ; Jochmus, Ingrid ; Müller, Martin, Pawlita,
JF  - Journal of Virology. 77 (2003), H. 8
Y1  - 2003
SN  - 1098-5514
SP  - 4635
EP  - 4645
ER  - 
TY  - JOUR
A1  - Hartung, Frank
T1  - Mobile DRM Introduction: The Need for Mobile DRM
JF  - Digital Rights Management : Technological, Economic, Legal and Political Aspects / Becker, Eberhard [u.a.]
Y1  - 2003
N1  - Lecture Notes in Computer Science ; 2770
SP  - 138
EP  - 149
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Fritz, Christian
A1  - Lakemeyer, Gerhard
T1  - Extending DTGOLOG with Options / Ferrein, Alexander ; Fritz, Christian ; Lakemeyer, Gerhard
JF  - IJCAI-03, Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence, Acapulco, Mexico, August 9-15, 2003
Y1  - 2003
SP  - 1391
EP  - 1393
ER  - 
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  - 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  - Heinrichs, U.
A1  - Pietrzyk, U.
A1  - Ziemons, Karl
T1  - Design optimization of the PMT-ClearPET prototypes based on simulation studies with GEANT3
JF  - 2002 IEEE Nuclear Science Symposium Conference Record, Vol. 3
N2  - Within the Crystal Clear Collaboration four centres are developing 2nd generation high performance small animal PET scanners for different kinds of animals and medical applications. The first prototypes are PMT-based systems including depth of interaction (DOI) detection by using a phoswich layer of LSO and LuYAP. The aim of these simulation studies is to optimize sensitivity and spatial resolution of given designs, which vary in FOVs caused by different detector configurations (ring/octagon) and sizes. For this purpose the simulation tool GEANT3 (CERN) was used. The simulations have shown that all PMT designs with one-to-one coupling of crystals have a very nonlinear axial sensitivity profile. By shifting every other PMT 1/4 of a PMT length in axial direction the sampling of the FOVs became more homogeneous. At an energy threshold of 350keV the regression coefficient increases from 0.818 for the non-shifted to 0.993 for the shifted design. Simulations of a point source centred in the FOV (threshold: 350keV) resulted in sensitivities of 4.2% for a 4×20PMT (LSO/LuYAP a 10mm) and 3.8% for a 4×16PMT (LSO/LuYAP a 8mm) ring design. The 3D-MLEM reconstruction of a point source shows the enormous improvement of resolution using a crystal double layer with DOI (3.1mm at 40mm from CFOV) instead of a 20mm single layer (11.9mm).
Y1  - 2003
SN  - 1082-3654
SP  - 682
EP  - 686
ER  -