TY  - JOUR
A1  - Herrmann, Ulf
A1  - Nava, P.
T1  - Die Strahlung der Sonne einfangen
JF  - DLR-Nachrichten / Deutsches Zentrum für Luft- und Raumfahrt
Y1  - 2005
SN  - 0937-0420
VL  - 109
IS  - Sonderheft Solarforschung
SP  - 34
EP  - 37
ER  - 
TY  - JOUR
A1  - Groß, Rolf Fritz
A1  - Berger, Jörg
T1  - Quo Vadis - Ausblick in die Gebäudeleittechnik der Zukunft
T1  - Whitherfacility management? An outlook to the future
JF  - HLH. Heizung, Lüftung/Klima, Haustechnik
N2  - Auf dem Weg zum vernetzten Haus stoßen Hersteller und Planer, insbesondere im privaten Wohnungsbau, zur Zeit noch auf erhebliche Widerstände bei der Durchdringung des Marktes.
N2  - Producers and planners of facility management systems are still faced with building owners' reluctance, especially when it comes to private homes.
Y1  - 2005
SN  - 1436-5103
VL  - 56
IS  - 1
SP  - 39
EP  - 41
PB  - Springer
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Khodaverdi, M.
A1  - Chatziioannou, A. F.
A1  - Weber, S.
A1  - Ziemons, Karl
A1  - Halling, H.
A1  - Pietrzyk, Uwe
T1  - Investigation of different MicroCT scanner configurations by GEANT4 simulations
JF  - IEEE Transactions on Nuclear Science
N2  - This study has been performed to design the combination of the new ClearPET (ClearPET is a trademark of the Crystal Clear Collaboration), a small animal positron emission tomography (PET) system, with a micro-computed tomography (microCT) scanner. The properties of different microCT systems have been determined by simulations based on GEANT4. We will demonstrate the influence of the detector material and the X-ray spectrum on the obtained contrast. Four different detector materials (selenium, cadmium zinc telluride, cesium iodide and gadolinium oxysulfide) and two X-ray spectra (a molybdenum and a tungsten source) have been considered. The spectra have also been modified by aluminum filters of varying thickness. The contrast between different tissue types (water, air, brain, bone and fat) has been simulated by using a suitable phantom. The results indicate the possibility to improve the image contrast in microCT by an optimized combination of the X-ray source and detector material.
Y1  - 2005
SN  - 0018-9499
VL  - 52
IS  - 1
SP  - 188
EP  - 192
ER  -