TY  - JOUR
A1  - Förster, Arnold
A1  - Schmidt, T.
A1  - Tewordt, M.
T1  - Single-electron-tunneling spectroscopy of asymmetric laterally confined double-barrier heterostructures / T. Schmidt ; M. Tewordt ; R. J. Haug ... A. Förster ...
JF  - Solid state electronics. 40 (1996), H. 1-8
Y1  - 1996
SN  - 0038-1101
SP  - 15
EP  - 19
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  - JOUR
A1  - Feng, Yong-Qing
A1  - Seibler, Jost
A1  - Alami, Raouf
A1  - Eisen, Andrew
A1  - Westerman, Karen A.
A1  - Leboulch, Philippe
A1  - Fiering, Steven
A1  - Bouhassira, Eric E.
T1  - Site-specific chromosomal integration in mammalian cells: highly efficient CRE recombinase-mediated cassette exchange
JF  - Journal of Molecular Biology
Y1  - 1999
U6  - https://doi.org/10.1006/jmbi.1999.3113
SN  - 0022-2836
VL  - 292
IS  - 4
SP  - 779
EP  - 785
ER  - 
TY  - JOUR
A1  - Rachinger, Michael
A1  - Bauch, Melanie
A1  - Strittmatter, Axel
A1  - Bongaerts, Johannes
A1  - Evers, Stefan
A1  - Maurer, Karl-Heinz
A1  - Daniel, Rolf
A1  - Liebl, Wolfgang
A1  - Liesegang, Heiko
A1  - Ehrenreich, Armin
T1  - Size unlimited markerless deletions by a transconjugative plasmid-system in Bacillus licheniformis
JF  - Journal of biotechnology
Y1  - 2013
SN  - 1873-4863 (E-Journal); 0168-1656 (Print)
VL  - Vol. 164
IS  - Iss. 4
SP  - 365
EP  - 369
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Dadfar, Dryed Mohammadali
A1  - Camozzi, Denise
A1  - Darguzyte, Milita
A1  - Roemhild, Karolin
A1  - Varvarà, Paola
A1  - Metselaar, Josbert
A1  - Banala, Srinivas
A1  - Straub, Marcel
A1  - Güver, Nihan
A1  - Engelmann, Ulrich M.
A1  - Slabu, Ioana
A1  - Buhl, Miriam
A1  - Leusen, Jan van
A1  - Kögerler, Paul
A1  - Hermanns-Sachweh, Benita
A1  - Schulz, Volkmar
A1  - Kiessling, Fabian
A1  - Lammers, Twan
T1  - Size-isolation of superparamagnetic iron oxide nanoparticles improves MRI, MPI and hyperthermia performance
JF  - Journal of Nanobiotechnology
N2  - Superparamagnetic iron oxide nanoparticles (SPION) are extensively used for magnetic resonance imaging (MRI) and magnetic particle imaging (MPI), as well as for magnetic fluid hyperthermia (MFH). We here describe a sequential centrifugation protocol to obtain SPION with well-defined sizes from a polydisperse SPION starting formulation, synthesized using the routinely employed co-precipitation technique. Transmission electron microscopy, dynamic light scattering and nanoparticle tracking analyses show that the SPION fractions obtained upon size-isolation are well-defined and almost monodisperse. MRI, MPI and MFH analyses demonstrate improved imaging and hyperthermia performance for size-isolated SPION as compared to the polydisperse starting mixture, as well as to commercial and clinically used iron oxide nanoparticle formulations, such as Resovist® and Sinerem®. The size-isolation protocol presented here may help to identify SPION with optimal properties for diagnostic, therapeutic and theranostic applications.
Y1  - 2020
U6  - https://doi.org/10.1186/s12951-020-0580-1
SN  - 1477-3155
VL  - 18
IS  - Article number 22
SP  - 1
EP  - 13
PB  - Nature Portfolio
ER  - 
TY  - CHAP
A1  - Ludowicy, Jonas
A1  - Rings, René
A1  - Finger, Felix
A1  - Braun, Carsten
T1  - Sizing Studies of Light Aircraft with Parallel Hybrid Propulsion Systems
T2  - Deutscher Luft- und Raumfahrtkongress 2018
Y1  - 2018
U6  - https://doi.org/10.25967/480227
ER  - 
TY  - CHAP
A1  - Ludowicy, Jonas
A1  - Rings, René
A1  - Finger, Felix
A1  - Braun, Carsten
T1  - Sizing Studies of Light Aircraft with Serial Hybrid Propulsion Systems
T2  - Luft- und Raumfahrt - Digitalisierung und Vernetzung : Deutscher Luft- und Raumfahrtkongress 2018. 4. - 6. September 2018 - Friedrichshafen
Y1  - 2018
ER  - 
TY  - JOUR
A1  - Raupp, Sebastian M.
A1  - Schmitt, Marcel
A1  - Walz, Anna-Lena
A1  - Diehm, Ralf
A1  - Hummel, Helga
A1  - Scharfer, Philip
A1  - Schabel, Wilhelm
T1  - Slot die stripe coating of low viscous fluids
JF  - Journal of Coatings Technology and Research
N2  - Slot die coating is applied to deposit thin and homogenous films in roll-to-roll and sheet-to-sheet applications. The critical step in operation is to choose suitable process parameters within the process window. In this work, we investigate an upper limit for stripe coatings. This maximum film thickness is characterized by stripe merging which needs to be avoided in a stable process. It is shown that the upper limit reduces the process window for stripe coatings to a major extent. As a result, stripe coatings at large coating gaps and low viscosities are only possible for relatively thick films. Explaining the upper limit, a theory of balancing the side pressure in the gap region in the cross-web direction has been developed.
Y1  - 2018
U6  - https://doi.org/10.1007/s11998-017-0039-y
SN  - 1935-3804
VL  - 15
IS  - 5
SP  - 899
EP  - 911
PB  - Springer
ER  - 
TY  - CHAP
A1  - Kroll-Ludwigs, Kathrin
T1  - Small Claims Regulation
T2  - European Encyclopedia of Private International Law
Y1  - 2017
SN  - 9781782547228
PB  - Edward Elgar Publishing
CY  - Cheltenham, UK
ER  - 
TY  - CHAP
A1  - Grundmann, Jan Thimo
A1  - Biele, Jens
A1  - Dachwald, Bernd
A1  - Grimm, Christian D.
A1  - Lange, Caroline
A1  - Ulamec, Stephan
A1  - Ziach, Christian
A1  - Spröwitz, Tom
A1  - Ruffer, Michael
A1  - Seefeldt, Patric
A1  - Spietz, Peter
A1  - Toth, Norbert
A1  - Mimasu, Yuya
A1  - Rittweger, Andreas
A1  - Bibring, Jean-Pierre
A1  - Braukhane, Andy
A1  - Boden, Ralf Christian
A1  - Dumont, Etienne
A1  - Jahnke, Stephan Siegfried
A1  - Jetzschmann, Michael
A1  - Krüger, Hans
A1  - Lange, Michael
A1  - Gomez, Antonio Martelo
A1  - Massonett, Didier
A1  - Okada, Tatsuaki
A1  - Sagliano, Marco
A1  - Sasaki, Kaname
A1  - Schröder, Silvio
A1  - Sippel, Martin
A1  - Skoczylas, Thomas
A1  - Wejmo, Elisabet
T1  - Small landers and separable sub-spacecraft for near-term solar sails
T2  - The Fourth International Symposium on Solar Sailing 2017
N2  - Following the successful PHILAE landing with ESA's ROSETTA probe and the launch of the MINERVA rovers and the Mobile Asteroid Surface Scout, MASCOT, aboard the JAXA space probe, HAYABUSA2, to asteroid (162173) Ryugu, small landers have found increasing interest. Integrated at the instrument level in their mothership they support small solar system body studies. With efficient capabilities, resource-friendly design and inherent robustness they are an attractive exploration mission element. We discuss advantages and constraints of small sub-spacecraft, focusing on emerging areas of activity such as asteroid diversity studies, planetary defence, and asteroid mining, on the background of our projects PHILAE, MASCOT, MASCOT2, the JAXA-DLR Solar Power Sail Lander Design Study, and others. The GOSSAMER-1 solar sail deployment concept also involves independent separable sub-spacecraft operating synchronized to deploy the sail. Small spacecraft require big changes in the way we do things and occasionally a little more effort than would be anticipated based on a traditional large spacecraft approach. In a Constraints-Driven Engineering environment we apply Concurrent Design and Engineering (CD/CE), Concurrent Assembly, Integration and Verification (CAIV) and Model-Based Systems Engineering (MBSE). Near-term solar sails will likely be small spacecraft which we expect to harmonize well with nano-scale separable instrument payload packages.
KW  - Small Solar System Body Lander
KW  - Small Spacecraft
KW  - PHILAE
KW  - MASCOT
KW  - Solar Power Sail
Y1  - 2017
N1  - The Fourth International Symposium on Solar Sailing 2017, 17-20 January 2017. Kyoto Research Park, Kyoto, Japan
SP  - 1
EP  - 10
ER  -