TY - CHAP A1 - Dachwald, Bernd T1 - Solar sail dynamics and control T2 - Encyclopedia of Aerospace Engineering N2 - Solar sails are large and lightweight reflective structures that are propelled by solar radiation pressure. This chapter covers their orbital and attitude dynamics and control. First, the advantages and limitations of solar sails are discussed and their history and development status is outlined. Because the dynamics of solar sails is governed by the (thermo-)optical properties of the sail film, the basic solar radiation pressure force models have to be described and compared before parameters to measure solar sail performance can be defined. The next part covers the orbital dynamics of solar sails for heliocentric motion, planetocentric motion, and motion at Lagrangian equilibrium points. Afterwards, some advanced solar radiation pressure force models are described, which allow to quantify the thrust force on solar sails of arbitrary shape, the effects of temperature, of light incidence angle, of surface roughness, and the effects of optical degradation of the sail film in the space environment. The orbital motion of a solar sail is strongly coupled to its rotational motion, so that the attitude control of these soft and flexible structures is very challenging, especially for planetocentric orbits that require fast attitude maneuvers. Finally, some potential attitude control methods are sketched and selection criteria are given. KW - solar sail KW - sailcraft KW - orbital dynamics KW - orbit control KW - attitude dynamics Y1 - 2010 U6 - https://doi.org/10.1002/9780470686652.eae292 PB - Wiley CY - Hoboken ER - TY - CHAP A1 - Damm, Sebastian A1 - Ritz, Thomas A1 - Strauch, Jakob ED - Klink, Stefan T1 - Benutzerzentrierte Anforderungsanalyse für die Produktlinien-Entwicklung mobiler Unternehmenssoftware T2 - EMISA 2010 : Einflussfaktoren auf die Entwicklung flexibler, integrierter Informationssysteme ; Beiträge des Workshops der GI-Fachgruppe Entwicklungsmethoden für Informationssysteme und deren Anwendung (EMISA), 07. - 08.10.2010 in Karlsruhe, Germany. - (GI-Edition : Proceedings ; 172) Y1 - 2010 SN - 978-3-88579-266-6 SP - 117 EP - 130 PB - Ges. für Informatik CY - Bonn ER - TY - JOUR A1 - Degering, Christian A1 - Eggert, Thorsten A1 - Puls, Michael A1 - Bongaerts, Johannes A1 - Evers, Stefan A1 - Maurer, Karl-Heinz A1 - Jaeger, Karl-Erich T1 - Optimization of protease secretion in Bacillus subtilis and Bacillus licheniformis by screening of homologous and herologous signal peptides JF - Applied and environmental microbiology N2 - Bacillus subtilis and Bacillus licheniformis are widely used for the large-scale industrial production of proteins. These strains can efficiently secrete proteins into the culture medium using the general secretion (Sec) pathway. A characteristic feature of all secreted proteins is their N-terminal signal peptides, which are recognized by the secretion machinery. Here, we have studied the production of an industrially important secreted protease, namely, subtilisin BPN′ from Bacillus amyloliquefaciens. One hundred seventy-three signal peptides originating from B. subtilis and 220 signal peptides from the B. licheniformis type strain were fused to this secretion target and expressed in B. subtilis, and the resulting library was analyzed by high-throughput screening for extracellular proteolytic activity. We have identified a number of signal peptides originating from both organisms which produced significantly increased yield of the secreted protease. Interestingly, we observed that levels of extracellular protease were improved not only in B. subtilis, which was used as the screening host, but also in two different B. licheniformis strains. To date, it is impossible to predict which signal peptide will result in better secretion and thus an improved yield of a given extracellular target protein. Our data show that screening a library consisting of homologous and heterologous signal peptides fused to a target protein can identify more-effective signal peptides, resulting in improved protein export not only in the original screening host but also in different production strains. Y1 - 2010 U6 - https://doi.org/10.1128/AEM.01146-10 SN - 1098-5336 (E-Journal); 0003-6919 (Print); 0099-2240 (Print) VL - 76 IS - 19 SP - 6370 EP - 6378 PB - American Society for Microbiology CY - Washington, DC ER - TY - GEN A1 - Dieringer, Matthias A. A1 - Renz, Wolfgang A1 - Lindel, Tomasz A1 - Seifert, Frank A1 - Frauenrath, Tobias A1 - Waiczies, Helmar A1 - von Knobelsdorff-Brenkhoff, Florian A1 - Santoro, Davide A1 - Hoffmann, Werner A1 - Ittermann, Bernd A1 - Schulz-Menger, Jeanette A1 - Niendorf, Thoralf T1 - 4CH TX/RX Surface Coil for 7T: Design, Optimization and Application for Cardiac Function Imaging T2 - 2010 ISMRM-ESMRMB joint annual meeting N2 - Practical impediments of ultra high field cardiovascular MR (CVMR) can be catalogued in exacerbated magnetic field and radio frequency (RF) inhomogeneities, susceptibility and off-resonance effects, conductive and dielectric effects in tissue, and RF power deposition constraints, which all bear the potential to spoil the benefit of CVMR at 7T. Therefore, a four element cardiac transceive surface coil array was developed. Cardiac imaging provided clinically acceptable signal homogeneity with an excellent blood myocardium contrast. Subtle anatomic structures, such as pericardium, mitral and tricuspid valves and their apparatus, papillary muscles, and trabecles were accurately delineated. Y1 - 2010 SN - 1545-4428 N1 - ISMRM-ESMRMB joint annual meeting, 1 - 7 May 2010, Stockholm, Sweden ER - TY - JOUR A1 - Digel, Ilya T1 - In-situ biological decontamination of an ice melting probe Y1 - 2010 N1 - 38th COSPAR Scientific Assembly. Held 18-15 July 2010, in Bremen, Germany Abstract unter https://www.cospar-assembly.org/abstractcd/OLD/COSPAR-10/abstracts/data/pdf/abstracts/F36-0013-10.pdf ER - TY - JOUR A1 - Dobbertin, Matthias A1 - Eilmann, Britta A1 - Bleuler, Peter A1 - Giuggiola, Arnaud A1 - Graf Pannatier, Elisabeth A1 - Landolt, Werner A1 - Schleppi, Patrick A1 - Rigling, Andreas T1 - Effect of irrigation on needle morphology, shoot and stem growth in a drought-exposed Pinus sylvestris forest JF - Tree Physiology N2 - In Valais, Switzerland, Scots pines (Pinus sylvestris L.) are declining, mainly following drought. To assess the impact of drought on tree growth and survival, an irrigation experiment was initiated in 2003 in a mature pine forest, approximately doubling the annual precipitation. Tree crown transparency (lack of foliage) and leaf area index (LAI) were annually assessed. Seven irrigated and six control trees were felled in 2006, and needles, stem discs and branches were taken for growth analysis. Irrigation in 2004 and 2005, both with below-average precipitation, increased needle size, area and mass, stem growth and, with a 1-year delay, shoot length. This led to a relative decrease in tree crown transparency (−14%) and to an increase in stand LAI (+20%). Irrigation increased needle length by 70%, shoot length by 100% and ring width by 120%, regardless of crown transparency. Crown transparency correlated positively with mean needle size, shoot length and ring width and negatively with specific leaf area. Trees with high crown transparency (low growth, short needles) experienced similar increases in needle mass and growth with irrigation than trees with low transparency (high growth, long needles), indicating that seemingly declining trees were able to ‘recover’ when water supply became sufficient. A simple drought index before and during the irrigation explained most of the variation found in the parameters for both irrigated and control trees. Y1 - 2010 U6 - https://doi.org/10.1093/treephys/tpp123 SN - 1758-4469 (Online) SN - 0829-318X (Print) VL - 30 IS - 3 SP - 346 EP - 360 PB - Oxford University Press CY - Oxford ER - TY - BOOK A1 - Eckey, Ulrich A1 - Kurth, Fabian T1 - Hamburg 2010 : Hafencity, Jungfernstieg, IBA 2013, Chilehaus, Speicherstadt, BRT Architekten. Y1 - 2010 PB - FH Aachen CY - Aachen ER - TY - JOUR A1 - Egli, Simon A1 - Ayer, François A1 - Peter, Martina A1 - Eilmann, Britta A1 - Rigling, Andreas T1 - Is forest mushroom productivity driven by tree growth? Results from a thinning experiment JF - Annals of Forest Science N2 - • Most of the edible forest mushrooms are mycorrhizal and depend on carbohydrates produced by the associated trees. Fruiting patterns of these fungi are not yet fully understood since climatic factors alone do not completely explain mushroom occurrence. • The objective of this study was to retrospectively find out if changing tree growth following an increment thinning has influenced the diversity patterns and productivity of associated forest mushrooms in the fungus reserve La Chanéaz, Switzerland. • The results reveal a clear temporal relationship between the thinning, the growth reaction of trees and the reaction of the fungal community, especially for the ectomycorrhizal species. The tree-ring width of the formerly suppressed beech trees and the fruit body number increased after thinning, leading to a significantly positive correlation between fruit body numbers and tree-ring width. • Fruit body production was influenced by previous annual tree growth, the best accordance was found between fruit body production and the tree-ring width two years previously. • The results support the hypothesis that ectomycorrhizal fruit body production must be linked with the growth of the associated host trees. Moreover, the findings indicate the importance of including mycorrhizal fungi as important players when discussing a tree as a carbon source or sink. Y1 - 2010 U6 - https://doi.org/10.1051/forest/2010011 SN - 1286-4560 (Print) SN - 1297-966X (Online) VL - 67 IS - 5 SP - 509 PB - Springer CY - Paris ER - TY - JOUR A1 - Eilmann, Britta A1 - Buchmann, Nina A1 - Siegwolf, Rolf A1 - Saurer, Matthias A1 - Cherubini, Paolo A1 - Rigling, Andreas T1 - Fast response of Scots pine to improved water availability reflected in tree-ring width and δ13C JF - Plant, Cell and Environment N2 - Drought-induced forest decline, like the Scots pine mortality in inner-Alpine valleys, will gain in importance as the frequency and severity of drought events are expected to increase. To understand how chronic drought affects tree growth and tree-ring δ13C values, we studied mature Scots pine in an irrigation experiment in an inner-Alpine valley. Tree growth and isotope analyses were carried out at the annual and seasonal scale. At the seasonal scale, maximum δ13C values were measured after the hottest and driest period of the year, and were associated with decreasing growth rates. Inter-annual δ13C values in early- and latewood showed a strong correlation with annual climatic conditions and an immediate decrease as a response to irrigation. This indicates a tight coupling between wood formation and the freshly produced assimilates for trees exposed to chronic drought. This rapid appearance of the isotopic signal is a strong indication for an immediate and direct transfer of newly synthesized assimilates for biomass production. The fast appearance and the distinct isotopic signal suggest a low availability of old stored carbohydrates. If this was a sign for C-storage depletion, an increasing mortality could be expected when stressors increase the need for carbohydrate for defence, repair or regeneration. Y1 - 2010 U6 - https://doi.org/10.1111/j.1365-3040.2010.02153.x SN - 1365-3040 (Online) SN - 0140-7791 (Print) VL - 33 IS - 8 SP - 1351 EP - 1360 PB - Wiley-Blackwell CY - Oxford ER - TY - CHAP A1 - Elsen, Ingo A1 - Hawari, Asma A1 - Johnen, Uwe ED - Pietsch, Wolfram ED - Krams, Benedikt T1 - Produktkernel in der Systemintegration (Erfahrungsbericht aus der Praxis) T2 - Vom Projekt zum Produkt - Fachtagung des GI-Fachausschusses Management der Anwendungsentwicklung und -wartung im Fachbereich Wirtschaftsinformatik (WI-MAW), 1. - 3. Dezember 2010 in Aachen N2 - In der Vergangenheit basierten große Systemintegrationsprojekte in der Regel auf Individualentwicklungen für einzelne Kunden. Getrieben durch Kostendruck steigt aber der Bedarf nach standardisierten Lösungen, die gleichzeitig die individuellen Anforderungen des jeweiligen Umfelds berücksichtigen. T-Systems GEI GmbH wird beiden Anforderungen mit Produktkerneln gerecht. Neben den technischen Aspekten der Kernelentwicklung spielen besonders organisatorische Aspekte eine Rolle, um Kernel effizient und qualitativ hochwertig zu entwickeln, ohne deren Funktionalitäten ins Uferlose wachsen zu lassen. Umgesetzt hat T-Systems dieses Konzept für Flughafeninformationssysteme. Damit kann dem wachsenden Bedarf der Flughafenbetreiber nach einer effizienten und kostengünstigen Softwarelösung zur Unterstützung Ihrer Geschäftsprozesse entsprochen werden. Y1 - 2010 SN - 9783885792727 SN - 1617-5468 SP - 93 EP - 102 PB - Gesellschaft für Informatik eV CY - Bonn ER - TY - JOUR A1 - Esch, Thomas T1 - Trends in der Nutzfahrzeugantriebstechnik JF - Motortechnische Zeitschrift (MTZ) Y1 - 2010 SN - 0024-8525 U6 - https://doi.org/10.1007/bf03225608 VL - 71 IS - 10 SP - 652 EP - 658 PB - Springer Nature CY - Basel ER - TY - JOUR A1 - Esch, Thomas T1 - Trends in commercial vehicle powertrains JF - ATZautotechnology N2 - Low emission zones and truck bans, the rising price of diesel and increases in road tolls: all of these factors are putting serious pressure on the transport industry. Commercial vehicle manufacturers and their suppliers are in the process of identifying new solutions to these challenges as part of their efforts to meet the EEV (enhanced environmentally friendly vehicle) limits, which are currently the most robust European exhaust and emissions standards for trucks and buses. KW - European Transient Cycle KW - Common Rail Injection System KW - Commercial Vehicle KW - Selective Catalytic Reduction KW - Diesel Engine Y1 - 2010 U6 - https://doi.org/10.1007/BF03247185 SN - 2192-886X VL - 2010 IS - 10 SP - 26 EP - 31 PB - Vieweg & Sohn CY - Wiesbaden ER - TY - RPRT A1 - Esch, Thomas A1 - Funke, Harald A1 - Roosen, Petra T1 - SIoBiA – Safety Implications of Biofuels in Aviation N2 - Biofuels potentially interesting also for aviation purposes are predominantly liquid fuels produced from biomass. The most common biofuels today are biodiesel and bioethanol. Since diesel engines are rather rare in aviation this survey is focusing on ethanol admixed to gasoline products. The Directive 2003/30/EC of the European Parliament and the Council of May 8th 2003 on the promotion of the use of biofuels or other renewable fuels for transport encourage a growing admixture of biogenic fuel components to fossil automotive gasoline. Some aircraft models equipped with spark ignited piston engines are approved for operation with automotive gasoline, frequently called “MOGAS” (motor gasoline). The majority of those approvals is limited to MOGAS compositions that do not contain methanol or ethanol beyond negligible amounts. In the past years (bio-)MTBE or (bio-)ETBE have been widely used as blending component of automotive gasoline whilst the usage of low-molecular alcohols like methanol or ethanol has been avoided due to the handling problems especially with regard to the strong affinity for water. With rising mandatory bio-admixtures the conversion of the basic biogenic ethanol to ETBE, causing a reduction of energetic payoff, becomes more and more unattractive. Therefore the direct ethanol admixture is accordingly favoured. Due to the national enforcements of the directive 2003/30/EC more oxygenates produced from organic materials like bioethanol have started to appear in automotive gasolines already. The current fuel specification EN 228 already allows up to 3 % volume per volume (v/v) (bio-)methanol or up to 5 % v/v (bio-)ethanol as fuel components. This is also roughly the amount of biogenic components to comply with the legal requirements to avoid monetary penalties for producers and distributors of fuels. Since automotive fuel is cheaper than the common aviation gasoline (AVGAS), creates less problems with lead deposits in the engine, and in general produces less pollutants it is strongly favoured by pilots. But being designed for a different set of usage scenarios the use of automotive fuel with low molecular alcohols for aircraft operation may have adverse effects in aviation operation. Increasing amounts of ethanol admixtures impose various changes in the gasoline’s chemical and physical properties, some of them rather unexpected and not within the range of flight experiences even of long-term pilots. Y1 - 2010 N1 - Analysis of the safety implications of the use of biofuels (ethanol admixture) for piston engines and general aviation aircraft and assessment of potential environmental benefits. PB - EASA CY - Köln ER - TY - CHAP A1 - Evers, Jörg A1 - Fleischhaker, Robert A1 - Pálffy, A. A1 - Keitel, C. T1 - Light propagation : From atomic to nuclear quantum optics T2 - Modern optics and photonics: atoms and structured media Y1 - 2010 SN - 978-981431327-8 U6 - https://doi.org/10.1142/9789814313278_0001 SP - 3 EP - 15 PB - World Scientific Publishing Co. ER - TY - JOUR A1 - Fabo, Sabine ED - Mohr, Klaus T1 - Sisyphus wird Steiff JF - Prädikat spießig (Boxhorn ; 21) N2 - Eine Reise durch die fremde Welt eines Kaufhaus-Schaufensters. Plüschtiere mit eingebauter Bewegungstechnik - knuffig oder nur eine Ausformulierung des Ernst des Lebens? Y1 - 2010 SN - 1864-2535 VL - 2010 SP - 58 EP - 61 PB - FH Aachen, Fachbereich Gestaltung CY - Aachen ER - TY - CHAP A1 - Feldhusen, Jörg A1 - Brezing, Alexander Nikolaus A1 - Pütz, Claus A1 - Wählisch, Georg T1 - Multi-system CAD-teaching in large classes T2 - When design education and design research meet : proceedings of the 12th International Conference on Engineering and Product Design Education, Norwegian University of Science and Technology (NTNU) Trondheim, Norway, 2nd - 3rd September 2010 ; [E&PDE] Y1 - 2010 SN - 978-1-904670-19-3 SP - 204 EP - 209 PB - Design Society CY - Glasgow ER - TY - JOUR A1 - Fellin, Wolfgang A1 - King, Julian A1 - Kirsch, Ansgar A1 - Oberguggenberger, Michael T1 - Uncertainty modelling and sensitivity analysis of tunnel face stability JF - Structural safety N2 - This paper proposes an approach to the choice and evaluation of engineering models with the aid of a typical application in geotechnics. An important issue in the construction of shallow tunnels, especially in weak ground conditions, is the tunnel face stability. Various theoretical and numerical models for predicting the necessary support pressure have been put forth in the literature. In this paper, we combine laboratory experiments performed at the University of Innsbruck with current methods of uncertainty and sensitivity analysis for assessing adequacy, predictive power and robustness of the models. The major issues are the handling of the twofold uncertainty of test results and of model predictions as well as the decision about what are the influential input parameters. Y1 - 2010 U6 - https://doi.org/10.1016/j.strusafe.2010.06.001 SN - 0167-4730 VL - 32 IS - 6 SP - 402 EP - 410 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Ferrein, Alexander T1 - golog.lua: Towards a Non-Prolog Implementation of Golog for Embedded Systems Y1 - 2010 SP - 20 EP - 28 ER - TY - JOUR A1 - Ferrein, Alexander T1 - golog.lua: Towards a Non-Prolog Implementation of Golog for Embedded Systems JF - Cognitive Robotics / Lakemeyer, Gerhard (ed.) Y1 - 2010 N1 - Dagstuhl Seminar Proceedings ; 10081 SP - 1 EP - 15 ER - TY - JOUR A1 - Ferrein, Alexander T1 - Robot controllers for highly dynamic environments with real-time constraints JF - Künstliche Intelligenz : KI. 24 (2010), H. 2 Y1 - 2010 SN - 1610-1987 SP - 175 EP - 178 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Niemüller, Tim A1 - Steinbauer, Gerald T1 - Team Zadeat 2010 : application for participation Y1 - 2010 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Siebel, Nils T. A1 - Steinbauer, Gerald T1 - Hybrid control for autonomous systems — Integrating learning, deliberation and reactive control JF - Robotics and Autonomous Systems Y1 - 2010 SN - 0921-8890 VL - 58 IS - 9 SP - 1037 EP - 1038 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Steinbauer, Gerald T1 - On the Way to High-Level Programming for Resource-Limited Embedded Systems with Golog JF - Simulation, Modeling, and Programming for Autonomous Robots Y1 - 2010 N1 - Lecture Notes in Computer Science ; 6472 ; Second International Conference, SIMPAR 2010, Darmstadt, Germany, November 15-18, 2010. Proceedings SP - 229 EP - 240 ER - TY - JOUR A1 - Fleischhaker, Robert A1 - Evers, Jörg A1 - Dey, Tarak N. T1 - Phase modulation induced by cooperative effects in electromagnetically induced transparency JF - Physical Review A - Atomic, molecular, and optical physics N2 - We analyze the influence of dipole-dipole interactions in an electromagnetically induced transparency set up for a density at the onset of cooperative effects. To this end, we include mean-field models for the influence of local-field corrections and radiation trapping into our calculation. We show both analytically and numerically that the polarization contribution to the local field strongly modulates the phase of a weak pulse. We give an intuitive explanation for this local-field-induced phase modulation and demonstrate that it distinctively differs from the nonlinear self-phase-modulation that a strong pulse experiences in a Kerr medium. Y1 - 2010 U6 - https://doi.org/10.1103/PhysRevA.82.013815 SN - 1050-2947 VL - 82 IS - 1 PB - AIP Publishing CY - Melville, NY ER - TY - JOUR A1 - Fonti, Patrick A1 - von Arx, Georg A1 - García-González, Ignacio A1 - Eilmann, Britta A1 - Sass-Klaassen, Ute G. W. A1 - Gärtner, Holger A1 - Eckstein, Dieter T1 - Studying global change through investigation of the plastic responses of xylem anatomy in tree rings JF - New Phytologist N2 - Variability in xylem anatomy is of interest to plant scientists because of the role water transport plays in plant performance and survival. Insights into plant adjustments to changing environmental conditions have mainly been obtained through structural and functional comparative studies between taxa or within taxa on contrasting sites or along environmental gradients. Yet, a gap exists regarding the study of hydraulic adjustments in response to environmental changes over the lifetimes of plants. In trees, dated tree-ring series are often exploited to reconstruct dynamics in ecological conditions, and recent work in which wood-anatomical variables have been used in dendrochronology has produced promising results. Environmental signals identified in water-conducting cells carry novel information reflecting changes in regional conditions and are mostly related to short, sub-annual intervals. Although the idea of investigating environmental signals through wood anatomical time series goes back to the 1960s, it is only recently that low-cost computerized image-analysis systems have enabled increased scientific output in this field. We believe that the study of tree-ring anatomy is emerging as a promising approach in tree biology and climate change research, particularly if complemented by physiological and ecological studies. This contribution presents the rationale, the potential, and the methodological challenges of this innovative approach. Y1 - 2010 U6 - https://doi.org/10.1111/j.1469-8137.2009.03030.x SN - 1469-8137 (Online) SN - 0028-646X (Print) VL - 185 IS - 1 SP - 42 EP - 53 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Fornaciari, Andrea A1 - Guidetti, Marco A1 - Havermann, Marc A1 - Lettini, Antonio T1 - Maccine mobili più efficienti JF - Fluidotecnica N2 - Secondo le attuali normative tutte le macchine mobili, entro il 2012, dovranno essere soggette a un incremento di efficienza energetica. Un’evoluzione del sistema idraulico potrà contribuire in maniera significativa al miglioramento richiesto. Elettronica e idraulica sempre più protagoniste. Y1 - 2010 IS - 345 SP - 11 EP - 14 PB - Quine Business Publisher CY - Milano ER - TY - GEN A1 - Frauenrath, Tobias A1 - Becker, Meike A1 - Hezel, Fabian A1 - Krombach, Gabriele A. A1 - Kremer, Ute A1 - Schulz-Menger, Jeanette A1 - Niendorf, Thoralf T1 - Comparison of Left Function Assessment Using Phonocardiogram and Electrocardiogram Triggered 2D SSFP CINE MR Imaging at 1.5 T and 3.0 T T2 - 2010 ISMRM-ESMRMB joint annual meeting N2 - As high-field cardiac MRI (CMR) becomes more widespread the propensity of ECG to distortions and mistriggering increases and with it the motivation for a cardiac triggering alternative. Hence, this study explores the suitability of acoustic cardiac triggering (ACT) for left ventricular (LV) function assessment in healthy subjects at 1.5T and 3.0T. Y1 - 2010 SN - 1545-4428 N1 - ISMRM-ESMRMB joint annual meeting, 1 - 7 May 2010, Stockholm, Sweden ER - TY - CHAP A1 - Frauenrath, Tobias A1 - Gömmel, Andreas A1 - Butenweg, Christoph A1 - Otten, Mario A1 - Niendorf, Thoralf T1 - 3D mapping of vocal fold geometry during articulatory maneuvers using ultrashort echo time imaging at 3.0 T T2 - ISMRM-ESMRMB joint annual meeting 2010, Band 4 Y1 - 2010 SN - 978-1-617-82008-3 N1 - ISMRM-ESMRMB joint annual meeting 2010 : Stockholm, Sweden, 1 - 7 May 2010 SP - 3087 PB - Curran CY - Red Hook, NY ER - TY - JOUR A1 - Frauenrath, Tobias A1 - Hezel, Fabian A1 - Renz, Wolfgang A1 - de Geyer d'Orth, Thibaut A1 - Dieringer, Matthias A1 - von Knobelsdorf-Brenkenhoff, Florian A1 - Prothmann, Marcel A1 - Schulz-Menger, Jeanette A1 - Niendorf, Thoralf T1 - Acoustic cardiac triggering: a practical solution for synchronization and gating of cardiovascular magnetic resonance at 7 Tesla JF - Journal of Cardiovascular Magnetic Resonance N2 - Background To demonstrate the applicability of acoustic cardiac triggering (ACT) for imaging of the heart at ultrahigh magnetic fields (7.0 T) by comparing phonocardiogram, conventional vector electrocardiogram (ECG) and traditional pulse oximetry (POX) triggered 2D CINE acquisitions together with (i) a qualitative image quality analysis, (ii) an assessment of the left ventricular function parameter and (iii) an examination of trigger reliability and trigger detection variance derived from the signal waveforms. Results ECG was susceptible to severe distortions at 7.0 T. POX and ACT provided waveforms free of interferences from electromagnetic fields or from magneto-hydrodynamic effects. Frequent R-wave mis-registration occurred in ECG-triggered acquisitions with a failure rate of up to 30% resulting in cardiac motion induced artifacts. ACT and POX triggering produced images free of cardiac motion artefacts. ECG showed a severe jitter in the R-wave detection. POX also showed a trigger jitter of approximately Δt = 72 ms which is equivalent to two cardiac phases. ACT showed a jitter of approximately Δt = 5 ms only. ECG waveforms revealed a standard deviation for the cardiac trigger offset larger than that observed for ACT or POX waveforms. Image quality assessment showed that ACT substantially improved image quality as compared to ECG (image quality score at end-diastole: ECG = 1.7 ± 0.5, ACT = 2.4 ± 0.5, p = 0.04) while the comparison between ECG vs. POX gated acquisitions showed no significant differences in image quality (image quality score: ECG = 1.7 ± 0.5, POX = 2.0 ± 0.5, p = 0.34). Conclusions The applicability of acoustic triggering for cardiac CINE imaging at 7.0 T was demonstrated. ACT's trigger reliability and fidelity are superior to that of ECG and POX. ACT promises to be beneficial for cardiovascular magnetic resonance at ultra-high field strengths including 7.0 T. KW - Interval Time Series KW - Image Quality Score KW - Image Quality Assessment KW - Sound Pressure Level KW - Cardiovascular Magnetic Resonance Y1 - 2010 U6 - https://doi.org/10.1186/1532-429X-12-67 SN - 1532-429X VL - 12 IS - 1 PB - Elsevier CY - Amsterdam ER - TY - GEN A1 - Frauenrath, Tobias A1 - Renz, Wolfgang A1 - Rieger, Jan A1 - Gömmel, Andreas A1 - Butenweg, Christoph A1 - Niendorf, Thoralf T1 - High Spatial Resolution 3D MRI of the Larynx Using a Dedicated TX/RX Phased Array Coil at 7.0T T2 - 2010 ISMRM-ESMRMB joint annual meeting N2 - MRI holds great potential for elucidating laryngeal and vocal fold anatomy together with the assessment of physiological processes associated in human phonation. However, MRI of human phonation remains very challenging due to the small size of the targeted structures, interfering signal from fat, air between the vocal folds and surrounding muscles and physiological motion. These anatomical/physiological constraints translate into stringent technical requirements in balancing, scan time, image contrast, immunity to physiological motion, temporal resolution and spatial resolution. Motivated by these challenges and limitations this study is aiming at translating the sensitivity gain at ultra-high magnetic fields for enhanced high spatial resolution 3D imaging of the larynx and vocal tract. To approach this goal a dedicated two channel TX/RX larynx coil is being proposed. Y1 - 2010 SN - 1545-4428 N1 - ISMRM-ESMRMB joint annual meeting, 1 - 7 May 2010, Stockholm, Sweden ER - TY - JOUR A1 - Fredebeul-Krein, Markus T1 - Sollen die Studiengebühren wieder abgeschafft werden? JF - Bildungsgerechtigkeit in der Begabtenförderung : ein Widerspruch in sich? ; 1. Aufl. / Bartoldus, Beate [Hrsg.] Y1 - 2010 SN - 978-3-86872-423-3 PB - Friedrich-Ebert-Stiftung CY - Berlin ER - TY - JOUR A1 - Fredebeul-Krein, Markus T1 - Studiengebühren sind sozial gerecht JF - ÖkonomenBlog : Die Stimme der Ökonomischen Vernunft (2010) Y1 - 2010 N1 - [gesehen: 24.09.2010] ER - TY - JOUR A1 - Fredebeul-Krein, Markus T1 - Die Abschaffung der Studiengebühren ist der falsche Weg JF - Universität / Institut für Wirtschaftspolititk : Ordnungspolitischer Kommentar (2010) Y1 - 2010 N1 - vom 03.08.2010 ER - TY - JOUR A1 - Fredebeul-Krein, Markus T1 - Wirtschaftskrise : Staatliche Förderung von glasfaserbasierten Breitbandnetzen? JF - Wirtschaftsdienst. 90 (2010), H. 2 Y1 - 2010 SN - 0043-6275 SP - 113 EP - 117 ER - TY - JOUR A1 - Fredebeul-Krein, Markus A1 - Knoben, Werner T1 - Long term risk sharing contracts as an approach to establish public–private partnerships for investment into next generation access networks JF - Telecommunications Policy Y1 - 2010 SN - 0308-5961 VL - 34 IS - 9 SP - 528 EP - 539 ER - TY - CHAP A1 - Fricke, Barbara A1 - Hoffschmidt, Bernhard T1 - Ecobalance of a solar thermal tower power plant with volumetric receiver T2 - SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France Y1 - 2010 SP - 87 EP - 88 PB - Soc. OSC CY - Saint Maur ER - TY - JOUR A1 - Frings, Michael T1 - Das neue Recht des Verbraucherkredits JF - Neue Wirtschaftsbriefe NWB Steuer- und Wirtschaftsrecht (2010) Y1 - 2010 SN - 0028-3460 N1 - zugleich: NWB Fach 19 - ; NWB DokID: UAAAD-42772 - Zugriff über die Digitale Bibliothek SP - 1608 EP - 1617 ER - TY - JOUR A1 - Frings, Michael T1 - Das neue Recht der Zahlungsdienste JF - Neue Wirtschaftsbriefe NWB Steuer- und Wirtschaftsrecht (2010) Y1 - 2010 SN - 0028-3460 N1 - zugleich: NWB Fach 19 - ; NWB DokID: YAAAD-40714 - Zugriff über die Digitale Bibliothek SP - 1151 EP - 1159 ER - TY - JOUR A1 - Funke, Harald A1 - Börner, Sebastian A1 - Robinson, A. A1 - Hendrick, P. A1 - Recker, E. T1 - Low NOx H2 combustion for industrial gas turbines of various power ranges JF - 5th International Gas Turbine Conference ETN-IGTC, ETN-2010-42, Brussels, Belgium, October 2010 Y1 - 2010 ER - TY - JOUR A1 - Funke, Harald A1 - Robinson, A. E. A1 - Hendrick, P. A1 - Wagemakers, R. T1 - Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fuelled µ-Scale Gas Turbine JF - Proceedings of the ASME Turbo Expo 2010 : presented at the 2010 ASME Turbo Expo, June 14 - 18, 2010, Glasgow, UK / sponsored by the International Gas Turbine Institute / Vol. 5: Industrial and cogeneration ; microturbines and small turbomachinery ; oil and gas applications ; wind turbine technology Y1 - 2010 SN - 978-0-7918-4400-7 N1 - GT2010-23453 ; ASME Turbo Expo ; (Glasgow) : 2010.06.14-18 SP - 587 EP - 596 PB - ASME CY - New York, NY ER - TY - CHAP A1 - Gall, Jan A1 - Abel, Dirk A1 - Ahlbrink, Nils A1 - Pitz-Paal, Robert A1 - Andersson, Joel A. E. A1 - Diehl, M. A1 - Teixeira Boura, Cristiano José A1 - Schmitz, Mark A1 - Hoffschmidt, Bernhard T1 - Simulation and control of solar thermal power plants T2 - International Conference on Renewable Energies and Power Quality : ICREPQ '10 : Granada 23rd - 25th March 2010 Y1 - 2010 SP - 1 EP - 5 ER - TY - JOUR A1 - Garhofer, Gerhard A1 - Bek, Toke A1 - Boehm, Andreas G. A1 - Gherghel, Doina A1 - Grundwald, Juan A1 - Jeppesen, Peter A1 - Kergoat, Hélène A1 - Kotliar, Konstantin A1 - Lanzl, Ines A1 - Lovasik, John V. A1 - Nagel, Edgar A1 - Vilser, Walthard A1 - Orgul, Selim A1 - Schmetterer, Leopold T1 - Use of the retinal vessel analyzer in ocular blood flow research JF - Acta Ophthalmol N2 - The present article describes a standard instrument for the continuous online determination of retinal vessel diameters, the commercially available retinal vessel analyzer. This report is intended to provide informed guidelines for measuring ocular blood flow with this system. The report describes the principles underlying the method and the instruments currently available, and discusses clinical protocol and the specific parameters measured by the system. Unresolved questions and the possible limitations of the technique are also discussed. Y1 - 2010 U6 - https://doi.org/10.1111/j.1755-3768.2009.01587.x SN - 1755-3768 VL - 88 IS - 7 SP - 717 EP - 722 PB - Wiley-Blackwell CY - Oxford ER - TY - JOUR A1 - Gebhardt, Andreas A1 - Schmidt, Frank-Michael A1 - Hötter, Jan-Steffen A1 - Sokalla, Wolfgang A1 - Sokalla, Patrick T1 - Additive Manufacturing by selective laser melting the realizer desktop machine and its application for the dental industry JF - Physics Procedia Y1 - 2010 SN - 1875-3892 N1 - Laser Assisted Net Shape Engineering 6, Proceedings of the LANE 2010, Part 2 VL - 5 IS - 2 SP - 543 EP - 549 ER - TY - BOOK A1 - Gebhardt, Wolfram A1 - Wollert, Jörg T1 - Das Funkbuch : Evolution und Kommunikation / [hrsg. von der Steute Schaltgeräte GmbH & Co. KG, Löhne, Geschäftsbereich Wireless. Autoren: Wolfram Gebhardt und Jörg F. Wollert] Y1 - 2010 SN - 978-3-00-032905-0 PB - Steute CY - Löhne ER - TY - JOUR A1 - Geimer, Konstantin A1 - Sauerborn, Markus A1 - Hoffschmidt, Bernhard A1 - Schmitz, Mark A1 - Göttsche, Joachim T1 - Test Facility for Absorber Specimens of Solar Tower Power Plants JF - Advances in Science and Technology. 74 (2010) Y1 - 2010 N1 - 5th Forum on New Materials : CIMTEC 2010, Montecatini Terme, Italy 13-18 June 2010. Part C SP - 266 EP - 271 ER - TY - CHAP A1 - Gellert, Christoph A1 - Park, Jin A1 - Butenweg, Christoph T1 - Seismic safety verification of masonry structures T2 - Proceedings of the Eight International Masonry Conference : held in Dresden from 4th to 7th of July 2010 / [International Masonry Society ; Technische Universität Dresden]. Ed. by: Wolfram Jäger ... Volume 1. (Masonry / International Masonry Society Special Publication ; 11) Y1 - 2010 SN - 978-3-00-031381-3 SP - 813 EP - 822 PB - ARGE 8IMC Dresden CY - Radebeul ER - TY - JOUR A1 - Gerhards, M. A1 - Belloum, A. A1 - Berretz, F. A1 - Sander, Volker A1 - Skorupa, S. T1 - A history-tracing XML-based provenance framework for workflows Y1 - 2010 SN - 978-1-4244-8989-3 N1 - Workflows in Support of Large-Scale Science (WORKS), 2010 5th Workshop on SP - 1 EP - 10 ER - TY - CHAP A1 - Gligorevic, Snjezana A1 - Pulini, Paola T1 - Simplified airport surface channel model based on the WSSUS assumption T2 - 2010 Integrated Communications, Navigation and Surveillance Conference (ICNS 2010) : Herndon, Virginia, USA, 11 - 13 May 2010 Y1 - 2010 SN - 978-1-4244-7457-8 SN - 2155-4943 SP - F2-1 EP - F2-11 ER - TY - JOUR A1 - Goldbach, Daniel T1 - Fahrstabilitätserhöhung bei Gespannen durch Querverschiebung des Anhängerkupplungspunktes JF - mechatronik mobil Y1 - 2010 SN - 1867-7371 VL - 2 IS - 1 SP - 23 EP - 29 PB - Expert Verlag CY - Renningen ER - TY - CHAP A1 - Goldbach, Daniel T1 - Management der funktionalen Sicherheit einer Entwicklung eines sicherheitskritischen Systems im Bereich Nutzfahrzeuge T2 - Commercial vehicle technology 2010 : proceedings of the 1st Commercial Vehicle Technology Symposium (CVT 2010), March 16 - 18, 2010, Kaiserslautern / K. Berns ... (ed.) Y1 - 2010 SN - 978-3-8322-9040-5 SP - 487 EP - 495 PB - Shaker CY - Aachen ER -