@article{DigelZhubanovaNojimaetal.2004, author = {Digel, Ilya and Zhubanova, Azhar A. and Nojima, H. and Artmann, Gerhard}, title = {The use of bactericidal effects of cluster ions generated by plasma in medical biotechnology}, series = {Biotechnologija : teorija i praktika (2004)}, journal = {Biotechnologija : teorija i praktika (2004)}, isbn = {1028-9399}, pages = {46 -- 52}, year = {2004}, language = {en} } @article{KhodaverdiChaziioannouWeberetal.2004, author = {Khodaverdi, M. and Chaziioannou, A. F. and Weber, S. and Ziemons, Karl and Halling, H. and Pietrzyk, U.}, title = {Investigation of different microCT scanner configurations by GEANT4 simulations}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4}, issn = {1082-3654}, pages = {2989 -- 2993}, year = {2004}, abstract = {This study has been performed to design the combination of the new ClearPET TM (ClearPET is a trademark of the Crystal Clear Collaboration), a small animal Positron Emission Tomography (PET) system, with a microComputed Tomography (microCT) scanner. The properties of different microCT systems have been determined by simulations based on GEANT4. We 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.}, language = {en} } @article{ZiemonsAuffrayBarbieretal.2004, author = {Ziemons, Karl and Auffray, E. and Barbier, R. and Brandenburg, G.}, title = {The ClearPET TM LSO/LuYAP phoswich scanner: a high performance small animal PET system}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 3}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 3}, issn = {1082-3654}, pages = {1728 -- 1732}, year = {2004}, abstract = {A 2nd generation high performance small animal PET scanner, called ClearPET™, has been designed and a first prototype is built by working groups of the Crystal Clear Collaboration (CCC). In order to achieve high sensitivity and maintain good uniform spatial resolution over the field of view in high resolution PET systems, it is necessary to extract the depth of interaction (DOI) information and correct for spatial degradation. The design of the first ClearPET™ Demonstrator based on the use of the multi-anode photomultiplier tube (Hamamatsu R7600-M64) and a LSO/LuYAP phoswich matrix. The two crystal layers of 8*8 crystals (2*2*10 mm3) are stacked on each other and mounted without light guide as one to one on the PMT. A unit of four PMTs arranged in-line represents one of 20 sectors of the ring design. The opening diameter of the crystal ring is 137 mm, the axial detector length is 110 mm. The PMT pulses are digitized by free-running ADCs and digital data processing determines the gamma energy, the phoswich layer and even the pulse arrival time. Single gamma interactions are recorded and coincidences are found by software. The gantry allows rotation of the detector modules around the field of view. The measurements have been done using the first LSO/LuYAP detector cassettes.}, language = {en} } @article{StreunBrandenburgBroekeletal.2004, author = {Streun, M. and Brandenburg, G. and Br{\"o}kel, M. and Fuss, L. and Larue, H. and Parl, C. and Zimmermann, E. and Ziemons, Karl and Halling, H.}, title = {The ClearPET data acquisition}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 5}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 5}, issn = {1082-3654}, pages = {3097 -- 3100}, year = {2004}, abstract = {Within the Crystal Clear Collaboration a modular system for a small animal PET scanner (ClearPET™) has been developed. The modularity allows the assembly of scanners of different sizes and characteristics in order to fit the specific needs of the individual member institutions. Now a first demonstrator is being completed in Julich. The system performs depth of interaction detection by using a phoswich arrangement combining LSO and LuYAP scintillators which are coupled to multi-channel photomultipliers (PMTs). A free-running ADC digitizes the signal from the PMT and the complete scintillation pulses are sampled by an FPGA and sent with 20 MB/S to a PC for preprocessing. The pulse provides information about the gamma energy and the scintillator material which identifies the interaction layer. Furthermore, the exact pulse starting time is obtained from the sampled data. This is important as no hardware coincidence detection is implemented. All single events are recorded and coincidences are identified by software. An advantage of that is that the coincidence window and the dimensions of the field of view can be adjusted easily. The ClearPET™ demonstrator is equipped with 10240 crystals on 80 PMTs. This paper presents an overview of the data acquisition system.}, language = {en} } @article{ChristHollendungLarueetal.2004, author = {Christ, D. and Hollendung, A. and Larue, H. and Parl, C. and Streun, M. and Weber, S. and Ziemons, Karl and Halling, H.}, title = {Homogenization of the MultiChannel PM gain by inserting light attenuating masks}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4}, issn = {1082-3654}, pages = {2382 -- 2385}, year = {2004}, abstract = {MultiChannel Photomultipliers (PM), like the R7600-00-M64 or R5900-00-M64 from Hamamatsu, are often chosen as photodetectors in high-resolution positron emission tomography (PET). A major problem of this PM is the nonuniform channel gain. In order to solve this problem, light attenuating masks were created. The aim of the masks is a homogenization of the output of all 64 channels using different hole sizes at the channel positions. The hole area, which is individually defined for the different channels, is inversely proportional to the channel gain. The measurements by inserting light attenuating masks improved a homogenization to a ratio of 1:1.2.}, language = {en} } @article{ZiemonsHeinrichsStreunetal.2004, author = {Ziemons, Karl and Heinrichs, U. and Streun, M. and Pietrzyk, U.}, title = {Validation of GEANT3 simulation studies with a dual-head PMT ClearPET™ prototype}, series = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 5}, journal = {2003 IEEE Nuclear Science Symposium Conference Record, Vol. 5}, issn = {1082-3654}, pages = {3053 -- 3056}, year = {2004}, abstract = {The ClearPET™ project is proposed by working groups of the Crystal Clear Collaboration (CCC) to develop a 2nd generation high performance small animal positron emission tomograph (PET). High sensitivity and high spatial resolution is foreseen for the ClearPET™ camera by using a phoswich arrangement combining mixed lutetium yttrium aluminum perovskite (LuYAP:Ce) and lutetium oxyorthosilicate (LSO) scintillating crystals. Design optimizations for the first photomultiplier tube (PMT) based ClearPET camera are done with a Monte-Carlo simulation package implemented on GEANT3 (CERN, Geneva, Switzerland). A dual-head prototype has been built to test the frontend electronics and was used to validate the implementation of the GEANT3 simulation tool. Multiple simulations were performed following the experimental protocols to measure the intrinsic resolution and the sensitivity profile in axial and radial direction. Including a mean energy resolution of about 27.0\% the simulated intrinsic resolution is about (1.41±0.11)mm compared to the measured of (1.48±0.06)mm. The simulated sensitivity profiles show a mean square deviation of 12.6\% in axial direction and 3.6\% in radial direction. Satisfactorily these results are representative for all designs and confirm the scanner geometry.}, language = {en} } @article{AuffrayBruyndonckxDevroedeetal.2004, author = {Auffray, E. and Bruyndonckx, P. and Devroede, O. and Fedorov, A. and Ziemons, Karl}, title = {The ClearPET project}, series = {Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, volume = {527}, journal = {Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, number = {1-2}, isbn = {0168-9002}, pages = {171 -- 174}, year = {2004}, abstract = {The Crystal Clear Collaboration has designed and is building a high-resolution small animal PET scanner. The design is based on the use of the Hamamatsu R7600-M64 multi-anode photomultiplier tube and a LSO/LuYAP phoswich matrix with one to one coupling between the crystals and the photo-detector. The complete system will have 80 PM tubes in four rings with an inner diameter of 137 mm and an axial field of view of 110 mm. The PM pulses are digitized by free-running ADCs and digital data processing determines the gamma energy, the phoswich layer and even the pulse arrival time. Single gamma interactions are recorded and coincidences are found by software. The gantry allows rotation of the detector modules around the field of view. Simulations, and measurements a 2×4 module test set-up predict a spatial resolution of 1.5 mm in the centre of the field of view and a sensitivity of 5.9\% for a point source in the centre of the field of view.}, language = {en} } @inproceedings{DiltheyMundRaupachetal.2004, author = {Dilthey, Ulrich and Mund, F. and Raupach, Michael and Schleser, Markus and Walk-Lauffer, Bernd}, title = {Improvement of textile reinforced concrete by polymer additives}, series = {ICPIC '04 : 11th International Congress on Polymers in Concrete : 2nd-4th June, 2004 at BAM, Berlin, Germany : proceedings / ed. by M. Maultzsch}, booktitle = {ICPIC '04 : 11th International Congress on Polymers in Concrete : 2nd-4th June, 2004 at BAM, Berlin, Germany : proceedings / ed. by M. Maultzsch}, publisher = {BAM}, address = {Berlin}, isbn = {3-00-013706-8}, pages = {469 -- 476}, year = {2004}, language = {en} } @article{DiltheyBrandenburgSchleser2004, author = {Dilthey, Ulrich and Brandenburg, Annette and Schleser, Markus}, title = {Dispensing and application of unfilled adhesives in the micro range}, series = {Welding and cutting. 3 (2004), H. 4}, journal = {Welding and cutting. 3 (2004), H. 4}, issn = {1612-3433}, pages = {250 -- 254}, year = {2004}, language = {en} } @inproceedings{WalkLaufferRaupachDilgeretal.2004, author = {Walk-Lauffer, Bernd and Raupach, Michael and Dilger, Klaus and B{\"o}hm, Stefan and Mundt, F. and Dilthey, Ulrich and Schleser, Markus}, title = {The interconnection between inner filaments of textile reinforcement by means of polymer modified concrete}, series = {Proceedings of the First International Conference on Innovative Materials and Technologies for Construction and Restoration : : Lecce, June 6 - 9, 2004 / Universit{\`a} degli Studi di Lecce / ed. Antonio La Tegola. Vol. 1: Key-notes, materials, construction}, booktitle = {Proceedings of the First International Conference on Innovative Materials and Technologies for Construction and Restoration : : Lecce, June 6 - 9, 2004 / Universit{\`a} degli Studi di Lecce / ed. Antonio La Tegola. Vol. 1: Key-notes, materials, construction}, publisher = {Liguori}, address = {Napoli}, pages = {150 -- 159}, year = {2004}, language = {en} } @article{HellwigVolkmann2004, author = {Hellwig, Angelika and Volkmann, Lutz}, title = {Maximally local-edge-connected graphs and digraphs}, series = {Ars combinatoria}, volume = {Vol. 72}, journal = {Ars combinatoria}, issn = {0381-7032}, pages = {295 -- 306}, year = {2004}, language = {en} } @article{HellwigVolkmann2004, author = {Hellwig, Angelika and Volkmann, Lutz}, title = {Neighborhood and degree conditions for super-edge-connected bipartite digraphs}, series = {Results in mathematics}, volume = {Vol. 45}, journal = {Results in mathematics}, number = {Iss. 1-2}, issn = {1420-9012 (E-Journal); 1422-6383 (Print)}, pages = {45 -- 58}, year = {2004}, language = {en} } @article{HellwigVolkmann2004, author = {Hellwig, Angelika and Volkmann, Lutz}, title = {Sufficient conditions for λ′-optimality in graphs of diameter 2}, series = {Discrete mathematics}, volume = {Vol. 283}, journal = {Discrete mathematics}, number = {Iss. 1-3}, issn = {1872-681X (E-Journal); 0012-365X (Print)}, pages = {113 -- 120}, year = {2004}, language = {en} } @inproceedings{DoeringSedlacek2004, author = {D{\"o}ring, Bernd and Sedlacek, Gerhard}, title = {Improvement of thermal comfort in light weight buildings made of steel with new concepts for slab systems}, series = {10th Nordic Steel Construction Conference, Copenhagen, Denmark 7-9. June 2004: NSCC 2004 : proceedings}, booktitle = {10th Nordic Steel Construction Conference, Copenhagen, Denmark 7-9. June 2004: NSCC 2004 : proceedings}, publisher = {Danish Steel Inst.}, address = {Copenhagen}, organization = {Nordic Steel Construction Conference <10, 2004, Copenhagen>}, pages = {35 -- 44}, year = {2004}, language = {en} } @article{HellwigRautenbachVolkmann2004, author = {Hellwig, Angelika and Rautenbach, Dieter and Volkmann, Lutz}, title = {Note on the connectivity of line graphs}, series = {Information processing letters}, volume = {Vol. 91}, journal = {Information processing letters}, number = {Iss. 1}, issn = {1872-6119 (E-Journal); 0020-0190 (Print)}, pages = {7 -- 10}, year = {2004}, language = {en} } @inproceedings{GligorevicBottSorger2004, author = {Gligorevic, Snjezana and Bott, Rainer and Sorger, Ulrich}, title = {Equalization for multi-carrier systems in time-varying channels}, series = {Multi-carrier spread-spectrum for future generation wireless systems : fourth international workshop, Germany, September 17-19, 2003}, booktitle = {Multi-carrier spread-spectrum for future generation wireless systems : fourth international workshop, Germany, September 17-19, 2003}, editor = {Fazel, Khaled}, isbn = {1402018371}, pages = {251 -- 258}, year = {2004}, language = {en} } @inproceedings{LandAGligorevic2004, author = {Land, Ingmar and A., Peter and Gligorevic, Snjezana}, title = {Computation of symbol-wise mutual information in transmission systems with logAPP decoders and application to EXIT charts}, series = {5th International ITG Conference on Source and Channel Coding (SCC) : January 14 - 16, 2004, Erlangen ; conference record. (ITG-Fachbericht ; 181)}, booktitle = {5th International ITG Conference on Source and Channel Coding (SCC) : January 14 - 16, 2004, Erlangen ; conference record. (ITG-Fachbericht ; 181)}, publisher = {VDE-Verl.}, address = {Berlin [u.a.]}, organization = {International Conference Source and Channel Coding <5, 2004, Erlangen>}, isbn = {3-8007-2802-8}, pages = {195 -- 202}, year = {2004}, language = {en} } @incollection{SiegertPohlKneenetal.2004, author = {Siegert, Petra and Pohl, Martina and Kneen, Malea M. and Pogozheva, Irina D. and Kenyon, George L. and McLeish, Michael J.}, title = {Exploring the substrate specificity of benzoylformate decarboxylase, pyruvate decarboxylase, and benzaldehyde lyase}, series = {Thiamine : catalytic mechanisms in normal and disease states / ed. by Frank Jordan ...}, booktitle = {Thiamine : catalytic mechanisms in normal and disease states / ed. by Frank Jordan ...}, publisher = {Dekker}, address = {New York, NY}, isbn = {0-8247-4062-9}, pages = {275 -- 290}, year = {2004}, language = {en} } @article{Staat2004, author = {Staat, Manfred}, title = {Plastic collapse analysis of longitudinally flawed pipes and vessels}, year = {2004}, abstract = {Improved collapse loads of thick-walled, crack containing pipes and vessels are suggested. Very deep cracks have a residual strength which is better modelled by a global limit load. In all burst tests, the ductility of pressure vessel steels was sufficiently high whereby the burst pressure could be predicted by limit analysis with no need to apply fracture mechanics. The relative prognosis error increases however, for long and deep defects due to uncertainties of geometry and strength data.}, subject = {Druckbeh{\"a}lter}, language = {en} } @inproceedings{Fabo2004, author = {Fabo, Sabine}, title = {Audio-visual hybrids : between immersion and detachment}, year = {2004}, abstract = {Close interrelations between sound and image are not a mere phenomenon of today's multimedia technology. The idea of the synthesis of different media lies at the core of the concept of the Gesamtkunstwerk in the second half of the 19th century and it can also be traced back to the synaesthesia debate at the beginning of the 20th century [...].}, subject = {Elektronische Kunst}, language = {en} } @inproceedings{SurteesGillespieKernetal.2004, author = {Surtees, A. J. and Gillespie, A. and Kern, Alexander and Rousseau, A.}, title = {DEVELOPMENT OF A RISK ASSESSMENT CALCULATOR BASED ON A SIMPLIFIED FORM OF THE IEC 62305-2 STANDARD ON LIGHTNING PROTECTION}, year = {2004}, abstract = {Neue Blitzschutznorm IEC 62305. Entwicklung einer einfachen Software zur Risikoabw{\"a}gung}, language = {en} } @inproceedings{KernHeidlerSeeversetal.2004, author = {Kern, Alexander and Heidler, Fridolin and Seevers, M. and Zischank, Wolfgang J.}, title = {Magnetic Fields and Induced Voltages in case of a Direct Strike - Comparison of Results obtained from Measurements at a Scaled Building to those of IEC 62305-4}, isbn = {0304-3886}, year = {2004}, abstract = {In the paper the results obtained from experiments at a modelled reinforced building in case of a direct lightning strike are compared with calculations. The comparison includes peak values of the magnetic field Hmax, its derivative (dH/dt)max and of induced voltages umax in typical cable routings. The experiments are performed at a 1:6 scaled building and the results are extrapolated using the similarity relations theory. The calculations are based on the approximate formulae given in IEC 62305-4 and have to be supplemented by a rough estimation of the additional shielding effect of a second reinforcement layer. The comparison shows, that the measured peak values of the magnetic field and its derivative are mostly lower than the calculated. The induced voltages are in good agreement. Hence, calculations of the induced voltages based on IEC 62305-4 are a good method for lightning protection studies of buildings, where the reinforcement is used as a grid-like electromagnetic shield.}, subject = {Blitz}, language = {en} } @inproceedings{ZischankHeidlerWiesingeretal.2004, author = {Zischank, Wolfgang J. and Heidler, Fridolin and Wiesinger, J. and Stimper, K. and Kern, Alexander and Seevers, M.}, title = {Magnetic Fields and Induced Voltages inside LPZ 1 Measured at a 1:6 Scale Model Building}, year = {2004}, abstract = {Laborexperimente zu Blitzschutzzonen in Stahlbetongeb{\"a}uden anhand eines Modells im Maßstab 1:6}, language = {en} } @article{VuStaat2004, author = {Vu, Duc-Khoi and Staat, Manfred}, title = {An algorithm for shakedown analysis of structure with temperature dependent yield stress}, year = {2004}, abstract = {This work is an attempt to answer the question: How to use convex programming in shakedown analysis of structures made of materials with temperature-dependent properties. Based on recently established shakedown theorems and formulations, a dual relationship between upper and lower bounds of the shakedown limit load is found, an algorithmfor shakedown analysis is proposed. While the original problem is neither convex nor concave, the algorithm presented here has the advantage of employing convex programming tools.}, subject = {Einspielen }, language = {en} } @article{KuehnHaugnerStaatetal.2004, author = {K{\"u}hn, Raoul-Roman and Haugner, Werner and Staat, Manfred and Sponagel, Stefan}, title = {A Two Phase Mixture Model based on Bone Observation}, year = {2004}, abstract = {An optimization method is developed to describe the mechanical behaviour of the human cancellous bone. The method is based on a mixture theory. A careful observation of the behaviour of the bone material leads to the hypothesis that the bone density is controlled by the principal stress trajectories (Wolff's law). The basic idea of the developed method is the coupling of a scalar value via an eigenvalue problem to the principal stress trajectories. On the one hand this theory will permit a prediction of the reaction of the biological bone structure after the implantation of a prosthesis, on the other hand it may be useful in engineering optimization problems. An analytical example shows its efficiency.}, subject = {Knochen}, language = {en} } @article{DerschGeyerHerrmannetal.2004, author = {Dersch, J{\"u}rgen and Geyer, Michael and Herrmann, Ulf and Jones, Scott A. and Kelly, Bruce and Kistner, Rainer and Ortmanns, Winfried and Pitz-Paal, Robert and Price, Henry}, title = {Trough integration into power plants—a study on the performance and economy of integrated solar combined cycle systems}, series = {Energy : the international journal}, volume = {29}, journal = {Energy : the international journal}, number = {5-6 (Special Issue SolarPaces)}, issn = {0360-5442}, doi = {10.1016/S0360-5442(03)00199-3}, pages = {947 -- 959}, year = {2004}, language = {en} } @inproceedings{HerrmannGraeterNava2004, author = {Herrmann, Ulf and Graeter, F. and Nava, P.}, title = {Performance of the SKAL-ET Collector Loop at KJC Operating Company}, series = {12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12}, booktitle = {12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12}, editor = {Ramos, C.}, publisher = {Instituto de Investigaciones Electricas}, address = {[s.l.]}, isbn = {968-6114-18-1}, year = {2004}, language = {en} } @inproceedings{LuepfertHerrmannPriceetal.2004, author = {L{\"u}pfert, E. and Herrmann, Ulf and Price, Henry and Zarza, E. and Kistener, R.}, title = {Towards Standard Performance Analysis for Parabolic Trough Collector Fields}, series = {12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12}, booktitle = {12th International Symposium Solar Power and Chemical Energy Systems, October 6-8, 2004, Oaxaca Mexico ; SolarPACES International Symposium, 12}, editor = {Ramos, C.}, publisher = {Instituto de Investigaciones Electricas}, address = {[s.l.]}, isbn = {968-6114-18-1}, year = {2004}, language = {en} } @article{CesariRennekampffVinterstenetal.2004, author = {Cesari, Francesca and Rennekampff, Verena and Vintersten, Kristina and Vuong, Lam Giang and Seibler, Jost and Bode, J{\"u}rgen and Wiebel, Franziska F. and Nordheim, Alfred}, title = {Elk-1 knock-out mice engineered by Flp recombinase-mediated cassette exchange}, series = {Genesis : The Journal of Genetics and Development}, volume = {38}, journal = {Genesis : The Journal of Genetics and Development}, number = {2}, issn = {1526-968X}, doi = {10.1002/gene.20003}, pages = {87 -- 92}, year = {2004}, language = {en} } @article{ChudobaButenwegPeiffer2004, author = {Chudoba, Rostislav and Butenweg, Christoph and Peiffer, F.}, title = {Technical information system for collaborative material research}, series = {Advances in engineering software}, volume = {Volume 35}, journal = {Advances in engineering software}, number = {Issue 10-11}, issn = {1873-5339 (E-Journal); 0965-9978 (Print)}, doi = {10.1016/j.advengsoft.2004.03.021}, pages = {747 -- 756}, year = {2004}, language = {en} } @article{HollerButenwegNohetal.2004, author = {Holler, S. and Butenweg, Christoph and Noh, S.-Y. and Meskouris, Konstantin}, title = {Computational model of textile-reinforced concrete structures}, series = {Computers \& structures : an international journal}, volume = {Volume 82}, journal = {Computers \& structures : an international journal}, number = {Issues 23-26}, issn = {1879-2243 (E-Journal); 0045-7949 (Print)}, doi = {10.1016/j.compstruc.2004.03.076}, pages = {1971 -- 1979}, year = {2004}, language = {en} } @inproceedings{MeskourisButenwegMistleretal.2004, author = {Meskouris, Konstantin and Butenweg, Christoph and Mistler, Michael and Kuhlmann, Wolfram}, title = {Seismic behaviour of historic masonry buildings}, series = {7th National Congress on Mechanics : Chania, Crete, June 24 - 26, 2004 ; proceedings / ed. A. Kounadis ....}, booktitle = {7th National Congress on Mechanics : Chania, Crete, June 24 - 26, 2004 ; proceedings / ed. A. Kounadis ....}, publisher = {Hellenic Society for Theoretical and Applied Mechanics}, address = {Chania}, organization = {National Congress on Mechanics <7, 2004, Chania, Crete>}, pages = {47 -- 49}, year = {2004}, language = {en} } @inproceedings{KuhlmannButenwegLopezetal.2004, author = {Kuhlmann, Wolfram and Butenweg, Christoph and Lopez, Marijen and Fernandez, Sebastian}, title = {Seismic vulnerability assessment of the historic Aachen Cathedral}, series = {Conference proceedings / 13th World Conference on Earthquake Engineering [Vancouver, British Columbia, Canada, August 1 - 6, 2004] / [hosted by CAEE/ACGP, Canadian Association for Earthquake Engineering]}, booktitle = {Conference proceedings / 13th World Conference on Earthquake Engineering [Vancouver, British Columbia, Canada, August 1 - 6, 2004] / [hosted by CAEE/ACGP, Canadian Association for Earthquake Engineering]}, publisher = {CAEE}, address = {Vancouver}, organization = {World Conference on Earthquake Engineering <13, 2004, Vancouver>}, pages = {1 -- 14}, year = {2004}, language = {en} } @inproceedings{KobButenweg2004, author = {Kob, Malte and Butenweg, Christoph}, title = {A finite element model of the interaction between intra-and extralaryngeal muscles}, series = {International Conference on Voice Physiology and Biomechanics, August 18-20, 2004, Marseille, France}, booktitle = {International Conference on Voice Physiology and Biomechanics, August 18-20, 2004, Marseille, France}, organization = {International Conference on Voice Physiology and Biomechanics <2004, Marseille>}, pages = {1 -- 2}, year = {2004}, language = {en} } @inproceedings{KalkerTollHolleretal.2004, author = {Kalker, Ines and Toll, B. and Holler, Stefan and Butenweg, Christoph and Topping, B. H. V. and Mota Soares, C. A.}, title = {Capacity analysis of textile retrofitted unreinforced masonry}, series = {Proceedings of the Seventh International Conference on Computational Structures Technology : [Lisbon, Portugal, 7 - 9 September 2004] / ed. by B. H. V. Topping ...}, booktitle = {Proceedings of the Seventh International Conference on Computational Structures Technology : [Lisbon, Portugal, 7 - 9 September 2004] / ed. by B. H. V. Topping ...}, publisher = {Civil-Comp Press}, address = {Stirling}, organization = {International Conference on Computational Structures Technology <7, 2004, Lissabon>}, isbn = {0-948749-95-4}, doi = {10.4203/ccp.79.194}, pages = {431 -- 432}, year = {2004}, language = {en} } @article{NdoumbeMbonjoMbonjoStreckertBitzetal.2004, author = {Ndoumb{\`e} Mbonjo Mbonjo, H. and Streckert, J. and Bitz, Andreas and Hansen, V. and Glasmachers, A. and Gencol, S. and Rozic, D.}, title = {Generic UMTS test signal for RF bioelectromagnetic studies}, series = {Bioelectromagnetics}, volume = {25}, journal = {Bioelectromagnetics}, number = {6}, issn = {1521-186X}, doi = {10.1002/bem.20007}, pages = {415 -- 425}, year = {2004}, language = {en} } @article{SommerStreckertBitzetal.2004, author = {Sommer, Angela M. and Streckert, Joachim and Bitz, Andreas and Hansen, Volkert W. and Lerchl, Alexander}, title = {No effects of GSM-modulated 900 MHz electromagnetic fields on survival rate and spontaneous development of lymphoma in female AKR/J mice}, series = {BMC Cancer}, volume = {77}, journal = {BMC Cancer}, number = {4}, doi = {10.1186/1471-2407-4-77}, year = {2004}, language = {en} } @article{HansScheerRiedletal.2004, author = {Hans, Stefan and Scheer, Nico and Riedl, Iris and Weiz{\"a}cker, Elisabeth von and Blader, Patrick and Campos-Ortega, Jos{\´e} A.}, title = {her3, a zebrafish member of the hairy-E(spl) family, is repressed by Notch signalling}, series = {Development}, volume = {131}, journal = {Development}, number = {12}, issn = {1477-9129}, doi = {10.1242/dev.01167}, pages = {2957 -- 2969}, year = {2004}, language = {en} } @inproceedings{SeboldtBlomeDachwaldetal.2004, author = {Seboldt, Wolfgang and Blome, Hans-Joachim and Dachwald, Bernd and Richter, Lutz}, title = {Proposal for an integrated European space exploration strategy}, series = {55th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law}, booktitle = {55th International Astronautical Congress of the International Astronautical Federation, the International Academy of Astronautics, and the International Institute of Space Law}, pages = {1 -- 10}, year = {2004}, abstract = {Recently, in his vision for space exploration, US president Bush announced to extend human presence across the solar system, starting with a human return to the Moon as early as 2015 in preparation for human exploration of Mars and other destinations. In Europe, an exploration program, termed AURORA, was established by ESA in 2001 - funded on a voluntary basis by ESA member states - with a clear focus on Mars and the ultimate goal of landing humans on Mars around 2030 in international cooperation. In 2003, a Human Spaceflight Vision Group was appointed by ESA with the task to develop a vision for the role of human spaceflight during the next quarter of the century. The resulting vision focused on a European-led lunar exploration initiative as part of a multi-decade, international effort to strengthen European identity and economy. After a review of the situation in Europe concerning space exploration, the paper outlines an approach for a consistent positioning of exploration within the existing European space programs, identifies destinations, and develops corresponding scenarios for an integrated strategy, starting with robotic missions to the Moon, Mars, and near-Earth asteroids. The interests of the European planetary in-situ science community, which recently met at DLR Cologne, are considered. Potential robotic lunar missions comprise polar landings to search for frozen volatiles and a sample return. For Mars, the implementation of a modest robotic landing mission in 2009 to demonstrate the capability for landing and prepare more ambitious and complex missions is discussed. For near-Earth asteroid exploration, a low-cost in-situ technology demonstration mission could yield important results. All proposed scenarios offer excellent science and could therefore create synergies between ESA's mandatory and optional programs in the area of planetary science and exploration. The paper intents to stimulate the European discussion on space exploration and reflects the personal view of the authors.}, language = {en} } @inproceedings{MistlerButenwegAnthoine2004, author = {Mistler, M. and Butenweg, Christoph and Anthoine, A.}, title = {Evaluation of the failure criterion for masonry by homogenisation}, series = {Proceedings of the Seventh International Conference on Computational Structures Technology : [Lisbon, Portugal, 7 - 9 September 2004] / ed. by B. H. V. Topping and C.A. Mota Soares}, booktitle = {Proceedings of the Seventh International Conference on Computational Structures Technology : [Lisbon, Portugal, 7 - 9 September 2004] / ed. by B. H. V. Topping and C.A. Mota Soares}, publisher = {Civil-Comp Press}, address = {Stirling}, organization = {International Conference on Computational Structures Technology <7, 2004, Lissabon>}, isbn = {0-948749-95-4}, doi = {10.4203/ccp.79.201}, pages = {16 Seiten}, year = {2004}, language = {en} } @inproceedings{Dachwald2004, author = {Dachwald, Bernd}, title = {Solar sail performance requirements for missions to the outer solar system and beyond}, series = {55th International Astronautical Congress 2004}, booktitle = {55th International Astronautical Congress 2004}, doi = {10.2514/6.IAC-04-S.P.11}, pages = {1 -- 9}, year = {2004}, abstract = {Solar sails enable missions to the outer solar system and beyond, although the solar radiation pressure decreases with the square of solar distance. For such missions, the solar sail may gain a large amount of energy by first making one or more close approaches to the sun. Within this paper, optimal trajectories for solar sail missions to the outer planets and into near interstellar space (200 AU) are presented. Thereby, it is shown that even near/medium-term solar sails with relatively moderate performance allow reasonable transfer times to the boundaries of the solar system.}, language = {en} }