Bedarfsanalyse der Modewirtschaft in den Bezirken Pankow und Mitte

BEDARFSANALYSE DER MODEWIRTSCHAFT IN DEN BEZIRKEN PANKOW UND MITTE Bedarfsanalyse der Modewirtschaft in den Bezirken Pankow und Mitte / Hülsebus, Sabine (Rights reserved) ( -

Effekte motorischer Förderung im Kindergartenalter

Rethorst S, Fleig P, Willimczik K. Effekte motorischer Förderung im Kindergartenalter. In: W. S, ed. Zweiter Deutscher Kinder- und Jugendsportbericht. Schorndorf: Hofmann; 2008: 237-254

Performance Evaluation of a Stereoscopic Based 3D Surface Localiser for Image-Guided Neurosurgery

International audienc

Gangbildveränderungen durch Gangschulung und spezielle Schuhsohlenkonstruktion

Fleig P, Pollmann D. Gangbildveränderungen durch Gangschulung und spezielle Schuhsohlenkonstruktion. In: Würth S, Panzer S, Krug J, Alfermann D, eds. Sport in Europa : Abstracts ; 17. Sportwissenschaftlicher Hochschultag der Deutschen Vereinigung für Sportwissenschaft vom 22. - 24. September 2005 in Leipzig. Schriften der Deutschen Vereinigung für Sportwissenschaft. Vol 151. Hamburg: Czwalina Verlag; 2005: 182

Outstanding Oxygen Reduction Kinetics of La0.6Sr0.4FeO3−δ Surfaces Decorated with Platinum Nanoparticles

La0.6Sr0.4FeO3-δ (LSF64) thin films are prepared by pulsed laser deposition (PLD) on yttria stabilized zirconia single crystals (YSZ) and characterized by electrochemical impedance spectroscopy (EIS) measurements before and after decoration with platinum nanoparticles. The platinum on the surface of LSF64 strongly accelerates the oxygen surface exchange kinetics. Especially at low oxygen partial pressures, the area-specific resistance (ASR) decreases by almost two orders of magnitude (e.g. in 0.25 mbar pO2 from 125 Ωcm2 to ca. 2 Ωcm2 at 600 C). While the pure LSF64 films exhibit severe degradation of the polarization resistance, Pt decorated films degrade much slower and show less scatter between individual samples. Surprisingly, faster oxygen incorporation (=lower polarization resistance) results for lower oxygen partial pressures, which indicates a severe mechanism change compared to undecorated LSF64 surfaces. The obtained results thus also reveal valuable information on the rate-determining step of oxygen exchange on LSF64 surfaces with and without platinum. On undecorated LSF64 surfaces oxygen dissociation is suggested to be rate limiting, while the Pt particles on LSF64 enable fast oxygen dissociation. Consequently, on Pt-decorated LSF64 electrodes a kind of job sharing mechanism results, with oxygen dissociation taking place on Pt and oxide ion formation and incorporation proceeding on the oxide.Fonds zur Förderung der wissenschaftlichen Forschung (FWF)19

Understanding electrochemical switchability of perovskite-type exsolution catalysts

Exsolution of metal nanoparticles from perovskite-type oxides is a very promising approachto obtain catalysts with superior properties. One particularly interesting property of exsolutioncatalysts is the possibility of electrochemical switching between different activity states. In this work, synchrotron-based in-situ X-ray diffraction experiments on electrochemically polarized La$_{0.6}$Sr$_{0.4}$FeO$_{3-δ}$ thin film electrodes are performed, in order to simultaneously obtain insights into the phase composition and the catalytic activity of the electrode surface. This shows that reversible electrochemical switching between a high andlow activity state is accompanied by a phase change of exsolved particles between metallic $α$-Fe and Fe-oxides. Reintegration of iron into the perovskite lattice is thus not required for obtaining a switchable catalyst, making this process especially interesting for intermediate temperature applications. These measurements also reveal how metallic particles on La$_{0.6}$Sr$_{0.4}$FeO$_{3-δ}$ electrodes affect the H$_2$ oxidation and H$_2$O splitting mechanism and why the particle size plays a minor role

Author Correction: Understanding electrochemical switchability of perovskite-type exsolution catalysts

The original version of this Article contained an error in the Acknowledgements section, which was previously incorrectly given as‘The authors gratefully acknowledge funding by the Austrian Science Fund (FWF) through project P4509-N16 as well as DESY(Hamburg, Germany), a member of the Helmholtz Association HGF, for the allocation of beamtime and provision of experimentalfacilities.’. The correct version states ‘The authors gratefully acknowledge funding by the Austrian Science Fund (FWF) through projectF4509-N16 as well as DESY (Hamburg, Germany), a member of the Helmholtz Association HGF, for the allocation of beamtime andprovision of experimental facilities.’ in place of the incorrect text. This has been corrected in both the PDF and HTML versions of theArticle

Best supportive care and therapeutic plasma exchange with or without eculizumab in Shiga-toxin-producing E. coli O104:H4 induced haemolytic-uraemic syndrome:An analysis of the German STEC-HUS registry

Background:May 22nd marks the beginning of a Shiga-toxin-producing Escherichia coli (STEC) O104:H4 outbreak in Northern Germany. By its end on 27 July, it had claimed 53 deaths among 2987 STEC and 855 confirmed haemolytic-uraemic syndrome (HUS) cases.Methods:To describe short-term effectiveness of best supportive care (BSC), therapeutic plasma exchange (TPE) and TPE with eculizumab (TPE-Ecu) in 631 patients with suspected HUS treated in 84 hospitals in Germany, Sweden and the Netherlands using the web-based registry of the DGfN (online since 27 May).Results:Of 631 entries, 491 fulfilled the definition of HUS (median age 46 years; 71 females). The median (inter-quartile range) hospital stay was 22 (14-31) days. Two hundred and eighty-one (57) patients underwent dialysis and 114 (23) mechanical ventilation. Fifty-seven patients received BSC, 241 TPE and 193 TPE-Ecu. Treatment strategy was dependent on disease severity (laboratory signs of haemolysis, thrombocytopenia, peak creatinine level, need for dialysis, neurological symptoms, frequency of seizures) which was lower in BSC than in TPE and TPE-Ecu patients. At study endpoint (hospital discharge or death), the median creatinine was lower in BSC [1.1 mg/dL (0.9-1.3)] than in TPE [1.2 mg/dL (1.0-1.5), P &lt; 0.05] and TPE-Ecu [1.4 mg/dL (1.0-2.2), P &lt; 0.001], while need for dialysis was not different between BSC (0.0, n 0), TPE (3.7; n 9) and TPE-Ecu (4.7, n 9). Seizures were absent in BSC and rare in TPE (0.4; n 1) and TPE-Ecu (2.6; n 5) patients. Total hospital mortality in HUS patients was 4.1 (n 20) and did not differ significantly between the TPE and TPE-Ecu groups.Conclusions:Despite frequent renal impairment, advanced neurological disorders and severe respiratory failure, short-term outcome was better than expected when compared with previous reports. Within the limitations of a retrospective registry analysis, our data do not support the notion of a short-term benefit of Ecu in comparison to TPE alone in the treatment of STEC-HUS. A randomized trial comparing BSC, TPE and Ecu seems to be prudent and necessary prior to establishing new treatment guidelines for STEC-HUS.</p