TY - CHAP A1 - Müller-Veggian, Mattea A1 - Neskakis, A. A1 - Lieder, R. M. A1 - Beuscher, H. T1 - Study of rotational aligned bands in ¹⁹⁰,¹⁹²,¹⁹⁴ Au T2 - Nuclear interactions : International Conference on Nuclear Interactions held in Canberra, 28 Aug. - 1 Sept. 1978 / ed. by Brian Albert Robson. - (Lecture notes in physics ; 92) Y1 - 1978 SN - 978-3-540-09102-8 N1 - Australian Academy of Science ; International Conference on Nuclear Interactions <1978, Canberra> SP - 428 PB - Springer CY - Berlin ER - TY - CHAP A1 - Müller-Veggian, Mattea A1 - Kops, Elena Rota A1 - Quin, Peng A1 - Herzog, Hans T1 - MRI Based Attenuation Correction for Brain PET Images T2 - Advances in medical engineering / [3rd RPT - Remagener Physiktage together with the Second Scientific Workshop of Medical Robotics, Navigation and Visualization ... Remagen ... 7.-9. März 2007]. Thorsten M. Buzug (ed.) Part 1. N2 - This work describes a procedure to yield attenuation maps from MR images which are used for the absorption correction (AC) of brain PET data. Such an approach could be mandatory for future combined PET and MRI scanners, which probably do not include a transmission facility. T1-weighted MR images were segmented into brain tissue, bone, soft tissue, and sinus; attenuation coefficients corresponding to elemental composition and density as well as to 511 keV photon energy were respectively assigned. Attenuation maps containing up to four compartments were created and forward projected into sinograms with attenuation factors which then were used for AC during reconstruction of FDG-PET data. The commonly used AC based on a radioactive (68Ge) transmission scan served as reference. The reconstructed radioactivity values obtained with the MRI-based AC were about 20% lower than those obtained with PET-based AC if the skull was not taken into account. Considering the skull the difference was still about 10%. Our investigations demonstrate the feasibility of a MRI-based AC, but revealed also the necessity of a satisfying delineation of bone thickness which tends to be underestimated in our first approach of T1-weighted MR image segmentation. Y1 - 2007 SN - 978-3-540-68763-4 U6 - https://doi.org/10.1007/978-3-540-68764-1_15 N1 - Springer proceedings in physics ; 114 SP - 93 EP - 97 PB - Springer CY - Berlin ER - TY - JOUR A1 - Paczkowski, Sebastian A1 - Weißbecker, Bernhard A1 - Schöning, Michael Josef A1 - Schütz, Stefan T1 - Biosensors on the Basis of Insect Olfaction JF - Insect biotechnology / Andreas Vilcinskas, ed. Y1 - 2011 SN - 978-90-481-9640-1 N1 - Biologically-inspired system ; 2 SP - 225 EP - 240 PB - Springer CY - Dordrecht [u.a.] ER - TY - JOUR A1 - Schubert, Nicole A1 - Scholl, Ingrid T1 - Comparing GPU-based multi-volume ray casting techniques JF - Computer Science - Research and Development Y1 - 2011 SN - 1865-2042 VL - 26 IS - 12 SP - 39 EP - 50 PB - Springer CY - Berlin ER - TY - JOUR A1 - Scholl, Ingrid A1 - Aach, Til A1 - Deserno, Thomas M. A1 - Kuhlen, Torsten T1 - Challenges of medical image processing JF - Computer Science - Research and Development Y1 - 2011 SN - 1865-2042 VL - 26 IS - 1-2 SP - 5 EP - 13 PB - Springer CY - Berlin ER - TY - JOUR A1 - Deserno, Thomas M. A1 - Aach, Til A1 - Amunts, Katrin A1 - Hillen, Walter A1 - Kuhlen, Torsten A1 - Scholl, Ingrid T1 - Advances in medical image processing : A special Issue on the Workshop in Aachen, Germany, March 2010 JF - Computer Science - Research and Development. 26 (2011), H. 1-2 Y1 - 2011 SN - 1865-2042 SP - 1 EP - 3 PB - springer CY - Berlin ER - TY - JOUR A1 - Nomdedeu, Mar Monsonis A1 - Willen, Christine A1 - Schieffer, Andre A1 - Arndt, Hartmut T1 - Temperature-dependent ranges of coexistence in a model of a two-prey-one-predator microbial food web JF - Marine Biology N2 - The objective of our study was to analyze the effects of temperature on the population dynamics of a three-species food web consisting of two prey bacteria (Pedobacter sp. and Acinetobacter johnsonii) and a protozoan predator (Tetrahymena pyriformis) as model organisms. We assessed the effects of temperature on the growth rates of all three species with the objective of developing a model with four differential equations based on the experimental data. The following hypotheses were tested at a theoretical level: Firstly, temperature changes can affect the dynamic behavior of a system by temperature-dependent parameters and interactions and secondly, food web response to temperature cannot be derived from the single species temperature response. The main outcome of the study is that temperature changes affect the parameter range where coexistence is possible within all three species. This has significant consequences on our ideas regarding the evaluation of effects of global warming. Y1 - 2012 U6 - https://doi.org/10.1007/s00227-012-1966-x SN - 1432-1793 VL - 159 IS - 11 SP - 2423 EP - 2430 PB - Springer CY - Berlin ER - TY - JOUR A1 - Pawelke, Siegfried A1 - Butzer, Paul L. T1 - Semi-groups and resolvent operators JF - Archive for Rational Mechanics and Analysis KW - Resolvent Operator KW - Electromagnetism KW - Complex System KW - Neural Network KW - Nonlinear Dynamics Y1 - 1968 U6 - https://doi.org/10.1007/BF00250941 SN - 0003-9527 VL - 30 IS - 2 SP - 127 EP - 147 PB - Springer CY - Berlin ER - TY - JOUR A1 - Berretz, Frank A1 - Skorupa, Sasche A1 - Sander, Volker A1 - Belloum, Adam A1 - Bubak, Marian T1 - Actor-Driven Workflow Execution in Distributed Environments JF - Euro-Par 2010 Parallel Processing Workshops : HeteroPAR, HPCC, HiBB, CoreGrid, UCHPC, HPCF, PROPER, CCPI, VHPC ; Ischia, Italy, August 31 - September 3, 2010 ; revised selected papers / Mario R. Guarracino ... (eds.) Y1 - 2011 SN - 978-3-642-21877-4 N1 - Lecture Notes in Computer Science ; 6586 SP - 287 EP - 294 PB - Springer CY - Berlin ER - TY - JOUR A1 - Schaefer, Thomas A1 - Höfken, Hans-Wilhelm A1 - Schuba, Marko T1 - Windows Phone 7 from a Digital Forensics’ Perspective Y1 - 2011 N1 - ICDF2C <3, 2011, Dublin> PB - Springer CY - Berlin ER -