TY - JOUR A1 - Khodaverdi, M. A1 - Weber, S. A1 - Streun, M. A1 - Parl, C. A1 - Ziemons, Karl T1 - High resolution imaging with ClearPET™ Neuro - first animal images JF - 2005 IEEE Nuclear Science Symposium Conference Record, Vol. 3 N2 - The ClearPET™ Neuro is the first full ring scanner within the Crystal Clear Collaboration (CCC). It consists of 80 detector modules allocated to 20 cassettes. LSO and LuYAP:Ce crystals in phoswich configuration in combination with position sensitive photomultiplier tubes are used to achieve high sensitivity and realize the acquisition of the depth of interaction (DOI) information. The complete system has been tested concerning the mechanical and electronical stability and interplay. Moreover, suitable corrections have been implemented into the reconstruction procedure to ensure high image quality. We present first results which show the successful operation of the ClearPET™ Neuro for artefact free and high resolution small animal imaging. Based on these results during the past few months the ClearPET™ Neuro System has been modified in order to optimize the performance. Y1 - 2006 SN - 1082-3654 SP - 1641 EP - 1644 ER - TY - JOUR A1 - Streun, M. A1 - Brandenburg, G. A1 - Khodaverdi, M. A1 - Larue, H. A1 - Parl, C. A1 - Ziemons, Karl T1 - Timemark correction for the ClearPET™ scanners JF - 2005 IEEE Nuclear Science Symposium Conference Record, Vol. 4 N2 - The small animal PET scanners developed by the Crystal Clear Collaboration (ClearPETtrade) detect coincidences by analyzing timemarks which are attached to each event. The scanners are able to save complete single list mode data which allows analysis and modification of the timemarks after data acquisition. The timemarks are obtained from the digitally sampled detector pulses by calculating the baseline crossing of the rising edge of the pulse which is approximated as a straight line. But the limited sampling frequency causes a systematic error in the determination of the timemark. This error depends on the phase of the sampling clock at the time of the event. A statistical method that corrects these errors will be presented Y1 - 2006 SN - 1082-3654 SP - 2057 EP - 2060 ER - TY - JOUR A1 - Mosset, J.-B. A1 - Devroede, O. A1 - Krieguer, M. A1 - Rey, M. A1 - Vieira, J.-M. A1 - Jung, J. H. A1 - Kuntner, C. A1 - Streun, M. A1 - Ziemons, Karl A1 - Auffray, E. A1 - Sempere-Roldan, P. A1 - Lecoq, P. A1 - Bruyndonckx, P. A1 - Loude, J.-F. A1 - Tavernier, S. A1 - Morcel, C. T1 - Development of an optimized LSO/LuYAP phoswich detector head for the Lausanne ClearPET demonstrator JF - IEEE Transactions on Nuclear Science N2 - This paper describes the LSO/LuYAP phoswich detector head developed for the ClearPET small animal PET scanner demonstrator that is under construction in Lausanne within the Crystal Clear Collaboration. The detector head consists of a dual layer of 8×8 LSO and LuYAP crystal arrays coupled to a multi-anode photomultiplier tube (Hamamatsu R7600-M64). Equalistion of the LSO/LuYAP light collection is obtained through partial attenuation of the LSO scintillation light using a thin aluminum deposit of 20-35 nm on LSO and appropriate temperature regulation of the phoswich head between 30°C to 60°C. At 511keV, typical FWHM energy resolutions of the pixels of a phoswich head amounts to (28±2)% for LSO and (25±2)% for LuYAP. The LSO versus LuYAP crystal identification efficiency is better than 98%. Six detector modules have been mounted on a rotating gantry. Axial and tangential spatial resolutions were measured up to 4 cm from the scanner axis and compared to Monte Carlo simulations using GATE. FWHM spatial resolution ranges from 1.3 mm on axis to 2.6 mm at 4 cm from the axis. Y1 - 2006 SN - 0018-9499 VL - 53 IS - 1 SP - 25 EP - 29 ER - TY - JOUR A1 - Müller, Karsten A1 - Grinwis, Stefan T1 - Entlastungs- und Betriebsverhalten eines gesteuerten Stauraumkanals mit mittiger Entlastung JF - KA Abwasser Abfall. Bd. 53 (2006), H. 12 Y1 - 2006 SN - 1616-430X N1 - Artikel unter dem angegebenen Link bei Jg. 2006, H. 12, Entwässerungssysteme. SP - 1238 EP - 1245 ER - TY - JOUR A1 - Dilthey, Ulrich A1 - Schleser, Markus A1 - Hanisch, Vera A1 - Gries, Thomas T1 - Garnzugprüfung polymergetränkter Textilien für die Bewehrung von Beton JF - Technische Textilien Y1 - 2006 SN - 0323-3243 VL - 49 IS - 1 SP - 48 EP - 50 ER - TY - JOUR A1 - Schleser, Markus A1 - Walk-Lauffer, Bernd A1 - Raupach, Michael A1 - Dilthey, Ulrich T1 - Application of polymers for textile-reinforced concrete JF - Journal of materials in civil engineering : properties, applications, durability Y1 - 2006 SN - 0899-1561 VL - 18 IS - 5 SP - 670 EP - 676 ER - TY - JOUR A1 - Feldmann, Markus A1 - Pak, Daniel A1 - Geßler, Achim A1 - Dilthey, Ulrich A1 - Schleser, Markus T1 - Bonded connections for textile reinforced concrete structures JF - Cailiao-gongcheng = Journal of materials engineering Y1 - 2006 SN - 1001-4381 IS - Special iss. SP - 123 EP - 127 ER - TY - JOUR A1 - Kaltschmitt, Martin A1 - Thrän, Daniela A1 - Fredebeul-Krein, Markus A1 - Vogel, Erika A1 - Kalitzky, Thomas A1 - Ehrhart, Karl Martin A1 - Hoppe, Christian A1 - Seifert, Stefan A1 - Sijm, Jos A1 - Böhringer, Christoph A1 - Hoffmann, Tim A1 - Moslener, Ulf A1 - Sturm, Bodo A1 - Diekmann, Jochen A1 - Schleich, Joachim T1 - CO2-Emissionshandel JF - Zeitschrift für Energiewirtschaft Y1 - 2006 SN - 0343-5377 (Print) 1866-2765 (Online) VL - Vol. 30 IS - Iss. 4 SP - 271 EP - 314 ER - TY - JOUR A1 - Hellmanns, Mark A1 - Böhm, Stefan A1 - Dilger, Klaus T1 - Manual applications of adhesives JF - Journal of adhesion and interface Y1 - 2006 VL - Vol. 7 IS - No. 4 SP - 24 EP - 27 ER - TY - JOUR A1 - Böhm, Stefan A1 - Hellmanns, Mark A1 - Backes, Andreas A1 - Dilger, Klaus T1 - Lock-in thermography based NDT of parts for the automotive industry JF - Journal of adhesion and interface Y1 - 2006 VL - Vol. 7 IS - No. 4 SP - 10 EP - 12 ER - TY - JOUR A1 - Hellwig, Angelika A1 - Volkmann, Lutz T1 - Lower bounds on the vertex-connectivity of digraphs and graphs JF - Information processing letters Y1 - 2006 SN - 1872-6119 (E-Journal); 0020-0190 (Print) VL - Vol. 99 IS - Iss. 2 SP - 41 EP - 46 ER - TY - JOUR A1 - Hellwig, Angelika A1 - Volkmann, Lutz T1 - On connectivity in graphs with given clique number JF - Journal of graph theory Y1 - 2006 SN - 03649024 ; 10970118 VL - Vol. 52 IS - Iss. 1 SP - 7 EP - 14 ER - TY - JOUR A1 - Hellwig, Angelika A1 - Volkmann, Lutz T1 - Some upper bounds for the domination number JF - The journal of combinatorial mathematics and combinatorial computing : JCMCC Y1 - 2006 SN - 0835-3026 VL - Vol. 57 SP - 187 EP - 209 ER - TY - JOUR A1 - Vorst, Phillip A1 - Ferrein, Alexander A1 - Lakemeyer, Gerhard T1 - AllemaniACs3D team description Y1 - 2006 SP - 1 EP - 6 ER - TY - JOUR A1 - Augenstein, Eckardt A1 - Herbergs, S. A1 - Kuperjans, Isabel T1 - TOP-Energy : ein Werkzeug zur Optimierung der Gebäudeenergieversorgung JF - KI : Kälte, Luft, Klimatechnik Y1 - 2006 SN - 1865-5432 IS - 5 SP - 198 EP - 201 ER - TY - JOUR A1 - Glaser, Markus A1 - Schmitz, Philipp T1 - Privatanleger am Optionsscheinmarkt Y1 - 2006 SP - 1 EP - 46 ER - TY - JOUR A1 - Eilmann, Britta A1 - Weber, Pascale A1 - Rigling, Andreas A1 - Eckstein, Dieter T1 - Growth reactions of Pinus sylvestris L. and Quercus pubescens Willd. to drought years at a xeric site in Valais, Switzerland JF - Dendrochronologia Y1 - 2006 U6 - http://dx.doi.org/doi:10.1016/j.dendro.2005.10.002 SN - 1612-0051 (Online) SN - 1125-7865 (Print) VL - 23 IS - 3 SP - 121 EP - 132 ER - TY - JOUR A1 - Schöning, Michael Josef A1 - Poghossian, Arshak T1 - BioFEDs (field-effect devices) : State-of-the-art and new directions JF - Electroanalysis Y1 - 2006 U6 - http://dx.doi.org/10.1002/elan.200603609 SN - 1521-4109 VL - 18 IS - 19-20 SP - 1893 EP - 1900 ER - TY - JOUR A1 - Gebhardt, Andreas T1 - Rapid Manufacturing - eine interdisziplinäre Strategie N2 - Als um 1987 ein Verfahren namens Stereolithographie und ein Stereolithography Apparatus (SLA) vorgestellt wurden, war der Traum von der Herstellung beliebiger dreidimensionaler Bauteile direkt aus Computerdaten und ohne bauteilspezifische Werkzeuge Realität geworden. Ein Anwendungs-Szenario wurde gleich mitgeliefert. Diese Technologie würde es möglich machen, die gesamte Ersatzteilversorgung der Amerikanischen Pazifikflotte mittels ein paar dieser Maschinen, umfangreicher Datenstätze und genügend Rohmaterial vor Ort auf einem Flugzeugträger direkt nach Bedarf zu fertigen. Diese Vorstellung definierte schon damals die direkte digitale Fertigung, das Rapid Manufacturing. In der Realität bestanden die mit diesem Verfahren hergestellten Bauteile nur aus Kunststoff, waren ungenau, bruchempfindlich und klebrig und allein in der Produktentwicklung, eben als Prototypen zu benutzen. Sie waren schnell verfügbar, weil zu Ihrer Herstellung keine Werkzeuge benötigt wurden. Folgerichtige und zudem modern hießen sie: Rapid Prototyping. Rapid Prototyping wurde schnell zum Synonym eines neuen Zweiges der Fertigungstechnik, der Generativen Fertigungstechnik. Die weitere Entwicklung brachte neue Verfahren, höhere Genauigkeiten, verbesserte Werkstoffe und neue Anwendungen. Die Herstellung von Negativen, also Werkzeugen, mit dem gleichen Verfahren wurde marketing-getrieben Rapid Tooling genannt und als die ersten Bauteile nicht mehr als Prototypen, sondern als Endprodukte eingesetzt wurden, nannte man dies Rapid Manufacturing - das Ziel war erreicht. War das Ziel wirklich erreicht? Ist es Rapid Manufacturing, wenn ein generativ gefertigtes Bauteil die gewünschte Spezifikation erreicht? Was muss passieren, damit aus dem Phänomen Rapid Prototyping eine Strategie wird, die geeignet ist, einen Paradigmenwechsel von der heutigen Hersteller-induzierten Massenproduktion von Massenartikeln zur Verbraucher-induzierten (und verantworteten) Massenproduktion von Einzelteilen für jedermann ermöglichen und möglicherweise unsere Arbeits- und Lebensformen tiefgreifend zu beeinflussen? Im Beitrag wird der Begriff der (Fertigungs-) Strategie „Rapid Manufacturing“ näher beleuchtet. Es wird diskutiert, welche Maßnahmen auf der technischen und der operative Ebene getroffen werden müssen, damit die generative Fertigungstechnik im Sinne dieser Strategie umgesetzt werden kann. Beispiele belegen, dass diese Entwicklung bereits begonnen hat und geben Anregungen für eine konstruktive Diskussion auf der RapidTech 2006. N2 - As a process called stereolithography and a stereolithography apparatus (SLA) was presented in 1987, the dream of manufacturing any three-dimensional component directly from computer data and without component-specific tools became reality. An application scenario was supplied at the same time. This technology would make it possible to produce the entire spare parts requirement of the American Pacific Fleet merely through the use of a couple of such machines, extensive datasets and enough raw material on board an aircraft carrier directly as required. This image defined direct digital fabrication, rapid manufacturing, even at that time. In reality, this procedure only managed to produce components in plastic which were imprecise, fragile and sticky and only usable as prototypes in product development. They were rapidly available, because no tools were required for their manufacture. Consequentially, they are now known as Rapid Prototyping in modern jargon. Rapid Prototyping quickly became a synonym for a new branch of production engineering known as generative production engineering. Continued development brought new processes, improved accuracy, improved materials and new applications. The manufacturing of negatives, in other words tools, using the same procedure was quickly named rapid tooling by the marketing sector, and once the first components were used as final products instead of just prototypes the process was renamed "rapid manufacturing" - the goal had been reached. Was the goal really reached? Is it rapid manufacturing if a generatively manufactured component reaches the required specifications? What has to happen so that the rapid prototyping phenomenon becomes a strategy which is suitable for enabling the paradigm change from current manufacture-induced mass production of mass articles to consumer-induced (and consumer-responsible) mass production of single parts for anyone, and in all possibility makes dramatic changes in our way of working and living? The lecture includes detailed information about the (production) strategy term "rapid manufacturing". We will be discussing which measures need to be taken on the technical and operative level so that generative production engineering can be implemented in the sense of this strategy. Examples will show that this development has already started, and should provoke stimulation leading to constructive discussion during RapidTech 2006. KW - Rapid prototyping KW - Rapid Manufacturing KW - Rapid Prototyping KW - Stereolithographie KW - Generative Fertigungstechnik KW - Rapid prototyping KW - rapid manufacturing Y1 - 2006 ER - TY - JOUR A1 - Gebhardt, Andreas T1 - Generative Manufacturing of Ceramic Parts "Vision Rapid Prototyping" N2 - Table of Contents Introduction 1. Generative Manufacturing Processes 2. Classification of Generative Manufacturing Processes 3. Application of Generative Processes on the Fabrication of Ceramic Parts 3.1 Extrusion 3.2 3D-Printing 3.3 Sintering – Laser Sintering 3.4 Layer-Laminate Processes 3.5 Stereolithography (sometimes written: Stereo Lithography) 4. Layer Milling 5. Conclusion - Vision KW - Rapid prototyping KW - Rapid Technologie KW - Rapid Prototyping Y1 - 2006 ER -