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  - 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  - 
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  - IEEE Transactions on Nuclear Science
N2  - Within the Crystal Clear Collaboration (CCC), four centers are developing second generation high performance small animal positron emission tomography (PET) scanners for different kinds of animals and medical applications. The first prototypes are photomultiplier tube (PMT)-based systems including depth of interaction (DOI) detection by using a phoswich layer of lutetium oxyorthosilicate (LSO) and lutetium yttrium aluminum perovskite (LuYAP). The aim of these simulation studies is to optimize sensitivity and spatial resolution of given designs, which vary in fields of view (FOVs) caused by different detector configurations (ring/octagon) and sizes. For this purpose the simulation tool GEANT3 (CERN, Geneva, Switzerland) was used.
Y1  - 2003
SN  - 0018-9499
VL  - 50
IS  - 5
SP  - 1428
EP  - 1432
ER  - 
TY  - JOUR
A1  - Streun, M.
A1  - Brandenburg, G.
A1  - Larue, H.
A1  - Saleh, H.
A1  - Zimmermann, E.
A1  - Ziemons, Karl
A1  - Halling, H.
T1  - Pulse shape discrimination of LSO and LuYAP scintillators for depth of interaction detection in PET
JF  - 2002 IEEE Nuclear Science Symposium Conference Record, Vol. 3
N2  - A feasible way to gain the depth of interaction information in a PET scanner is the use of phoswich detectors. In general the layer of interaction is identified front the pulse shape of the corresponding scintillator material. In this work pulses from LSO and LuYAP crystals were investigated in order to find a practical method of distinguishing. It turned out that such a pulse processing could he kept simple due to an additional slow component in the light decay of the LuYAP pulse. At the same time the short decay time guarantees that the major amount of the light output is still collected within a short pulse recording time.
Y1  - 2003
SN  - 1082-3654
SP  - 1636
EP  - 1639
ER  - 
TY  - JOUR
A1  - Streun, M.
A1  - Brandenburg, G.
A1  - Larue, H.
A1  - Saleh, H.
A1  - Zimmermann, E.
A1  - Ziemons, Karl
A1  - Halling, H.
T1  - Pulse shape discrimination of LSO and LuYAP scintillators for depth of interaction detection in PET
JF  - IEEE Transactions on Nuclear Science
N2  - A feasible way to gain the depth of interaction information in a positron emission tomography scanner is the use of phoswich detectors. In general, the layer of interaction is identified from the pulse shape of the corresponding scintillator material. In this work, pulses from LSO and LuYAP crystals were investigated in order to find a practical method of distinguishing. It turned out that such a pulse processing could be kept simple because of an additional slow component in the light decay of the LuYAP pulse. At the same time, the short decay time guarantees that the major amount of the light output is still collected within a short pulse recording time.
Y1  - 2003
SN  - 0018-9499
VL  - 50
IS  - 3
SP  - 344
EP  - 347
ER  - 
TY  - JOUR
A1  - Temiz Artmann, Aysegül
A1  - Cavdar, C.
A1  - Yenicerioglu, Y.
A1  - Caliskan, S.
T1  - The effects of intravenous iron treatment on oxidant stress and erythrocyte deformability in haemodialysis patients. Cavdar, C.; Temiz, A.; Yenicerioglu, Y.; Caliskan, S.; Celik, A.; Sifil, A.; Onvural, B.; Camsari, T.
JF  - Scandinavian Journal of Urology and Nephrology. 37 (2003), H. 1
Y1  - 2003
SN  - 0036-5599
SP  - 77
EP  - 82
ER  - 
TY  - JOUR
A1  - Fredebeul-Krein, Markus
T1  - Adopting a coherent institutional framework for the Ukrainian telecom sector: Lessons to be learnt from European and German experience
JF  - Zerkalo Nedeli  (2003)
Y1  - 2003
N1  - (Ukrainian Journal)
ER  - 
TY  - JOUR
A1  - Oßmann, Martin
A1  - Hattrup, C.
A1  - Broeck, H. W. van der
T1  - Fast estimation techniques for digital control of resonant converters / Hattrup, C.; van der Broeck, H.W.; Ossmann, M.;
JF  - IEEE Transaction on Power Electronics. 18 (2003), H. 1
Y1  - 2003
SN  - 0885-8993
N1  - Part 2
SP  - 365
EP  - 372
ER  - 
TY  - JOUR
A1  - Havermann, Marc
A1  - Seiler, F.
A1  - George, A.
A1  - Leopold, F.
T1  - Planar Velocity Visualization in High-Speed Wedge Flow using Doppler Picture Velocimetry (DPV) compared with Particle Image Velocimetry (PIV) / Seiler, F. ; Havermann, M. ; George, A. ; Leopold, F. ; Srulijes, J.
JF  - Journal of Visualization. 6 (2003), H. 3
Y1  - 2003
SN  - 1343-8875
SP  - 253
EP  - 262
PB  - -
ER  - 
TY  - JOUR
A1  - Palmer, J. W.
A1  - Lindemann, Markus
T1  - Business models and market mechanisms : evaluating efficiency in consumer electronic markets
JF  - Data base and advanced information systems. Bd. 34 (2003), H. 2
Y1  - 2003
SN  - 0105-9912
SP  - 23
EP  - 38
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Fend, Thomas
A1  - Jorgensen, Gary
A1  - Küster, Harald
T1  - Comparative assessment of solar concentrator materials / Fend, Thomas ; Hoffschmidt, Bernhard ; Jorgensen, Gary ; Küster, Harald ; Krüger, Dirk ; Pitz-Paal, Robert ; Riebrock, Peter ; Riffelmann, Klaus-Jürgen
JF  - Solar energy. 74 (2003), H. 2
Y1  - 2003
SN  - 0038-092X
SP  - 149
EP  - 155
ER  - 
TY  - JOUR
A1  - Kotliar, Konstantin
A1  - Svetlova, O. V.
A1  - Makarov, F. N.
A1  - Zaseeva, M. V.
T1  - Morfologicheskie i funktsional'nye osobennosti resnichnogo poiaska khrustalika kak kliuchevogo ispolnitel'nogo zvena v mekhanizme akkommodatsii glaza cheloveka = Morpho-functional characteristics of lens ciliary body as a key mechanism of accommodation in
JF  - Morfologiia (Saint Petersburg, Russia). 123 (2003), H. 3
Y1  - 2003
SN  - 1026-3543
N1  - Original in Russisch, English abstract
SP  - 7
EP  - 16
PB  - -
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugênia Vieira da
T1  - Solar cooking system with or without heat storage for families and institutions
JF  - Solar energy. 75 (2003), H. 1
Y1  - 2003
SN  - 0038-092x
N1  - 2. ISSN: 0375-9865
SP  - 34
EP  - 41
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Téllez, Félix M.
A1  - Valverde, Antonio
A1  - Fernandez, Valerio
A1  - Fernandez, Jesus
T1  - Performance evaluation of the 200-kWth HiTRec-II open volumetric air receiver
JF  - Journal of solar energy engineering
Y1  - 2003
VL  - Vol. 125
IS  - Iss. 1
SP  - 87
EP  - 94
ER  - 
TY  - JOUR
A1  - Maggakis-Kelemen, C.
A1  - Bork, M.
A1  - Kayser, Peter
A1  - Biselli, Manfred
A1  - Artmann, Gerhard
T1  - Biological and mechanical quality of red blood cells cultured from human umbilical cord blood stem cells
JF  - Medical and biological engineering and computing. 41 (2003), H. 3
Y1  - 2003
SN  - 0140-0118
SP  - 350
EP  - 356
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  - 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  - 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  - Hellwig, Angelika
A1  - Volkmann, Lutz
T1  - Maximally edge-connected digraphs
JF  - Australasian journal of combinatorics
Y1  - 2003
SN  - 1034-4942 (E-Journal); 1034-4942 (Print)
VL  - Vol. 27
SP  - 23
EP  - 32
ER  -