Elke Dworatzek, Shokoufeh Mahmoodzadeh, Carola Schubert, Christina Westphal, Joachim Leber, Angelika Kusch, Georgios Kararigas, Daniela Fliegner, Maryline Moulin, Renée Ventura‐Clapier, Jan-Ακε Gustafsson, Mercy M. Davidson, Duska Dragun, Vera Regitz‐Zagrosek,
Oestrogen receptor alpha (ERα) and beta (ERβ) are involved in the regulation of pathological myocardial hypertrophy (MH). We hypothesize that both ER are also involved in physiological MH. Therefore, we investigated the role of ER in exercise-induced physiological MH in loss-of-function models and studied potential mechanisms of action. We performed 1 and 8 weeks of voluntary cage wheel running (VCR) with male and female C57BL/6J wild-type (WT), ERα- and ERβ-deleted mice. In line with other studies, ...
Tópico(s): Adipose Tissue and Metabolism
2014 - Oxford University Press | Cardiovascular Research
G. Schönhense, C. Westphal, Joachim Bansmann, M. Getzlaff,
A new phenomenon has been observed in solid-state photoemission with circularly polarized light. Its outward appearance is similar to the circular dichroism in photoabsorption. For special observation geometries, large photoelectron intensity asymmetries arise upon reversal of the photon helicity. The effect is not based on spin-orbit interaction, as is demonstrated by the example of photoemission from graphite (Z = 6). Similar asymmetries are expected for all single-crystal solids thus opening up ...
Tópico(s): Electron and X-Ray Spectroscopy Techniques
1992 - Institute of Physics | EPL (Europhysics Letters)
C. Westphal, Joachim Bansmann, M. Getzlaff, G. Schönhense, N. A. Cherepkov, M. Braunstem, Vincent McKoy, Richard L. Dubs,
Measurements of a new observable quantity in photoemission from oriented molecules are reported. Using circularly polarized radiation, the photoemission intensities for a special geometry were found to depend on photon helicity. The basic theoretical description of the effect is outlined, showing that it occurs for all spatially fixed molecules in the electric dipole approximation and does not depend on electron-spin effects. Experimental case studies for diatomics (CO, NO), benzene, and the “heavy” ...
Tópico(s): Catalytic Processes in Materials Science
1991 - Elsevier BV | Surface Science
G. Schönhense, C. Westphal, Joachim Bansmann, M. Getzlaff, J. Noffke, L. Fritsche,
In angle-resolved photoelectron spectroscopy with circularly polarized radiation, the photoemission intensities depend on photon helicity. This phenomenon arises for pure electric dipole transitions and nonchiral species provided the target exhibits a spatial orientation (or alignment) and the experimental geometry defines a "handedness". The new type of spectroscopy is illustrated by the examples of photoemission from graphite (0001) and Pd(111) surfaces. It is evident that the effect does not result ...
Tópico(s): Electron and X-Ray Spectroscopy Techniques
1991 - Elsevier BV | Surface Science
C. Westphal, Joachim Bansmann, M. Getzlaff, G. Schönhense,
Theoretical predictions of a new phenomenon arising in photoelectron emission from oriented molecules by circularly polarized light have been experimentally verified for CO. For a special geometry photoelectron-intensity differences occur upon reversal of photon helicity. The measured asymmetries (up to 80%) show good agreement with an ab initio calculation at photon energies between 20 and 40 eV. Theoretically, the new manifestation of circular dichroism is already obtained in the pure electric ...
Tópico(s): Cold Atom Physics and Bose-Einstein Condensates
1989 - American Physical Society | Physical Review Letters
Fabio Pittalà, Ralf-Peter Braun, Georg Böcherer, Patrick Schulte, Maximilian Schaedler, S. Bettelli, Stefano Calabrò, Maxim Kuschnerov, Andreas Gladisch, Fritz-Joachim Westphal, Changsong Xie, Rong‐Fu Chen, Qibing Wang, Bofang Zheng,
We report an industry leading optical dense wavelength division multiplexing (DWDM) field trial with line rates per channel exceeding 1.66 Tb/s using 130 GBaud dual-polarization probabilistic constellation shaping 256-ary quadrature amplitude modulation (DP-PCS256QAM) in a high capacity data center interconnect (DCI) scenario. This research trial was performed on 96.5 km of field-deployed standard single mode G.652 fiber infrastructure of Deutsche Telekom in Germany employing Erbium-doped fiber amplifier ( ...
Tópico(s): Photonic and Optical Devices
2022 - Institute of Electrical and Electronics Engineers | IEEE Photonics Technology Letters
Róbert Szabó, Mario Kind, Fritz-Joachim Westphal, Hagen Woesner, Dávid Jocha, András Császár,
Network function virtualization (NFV) and software defined networking (SDN) are key technology enablers for cost reductions and new business models in networking. The possibility to automatically and dynamically scale network services at run time is one of the main claims of NFV. Elastic NFV could be similar to what elastic cloud services provide for compute, with pay-per-use cost models for customers. However, control of resources for elastic services is far from trivial. We show how current NFV ...
Tópico(s): Network Security and Intrusion Detection
2015 - Institute of Electrical and Electronics Engineers | IEEE Network
... the Zurich Consensus and by the interventions of Joachim Westphal; how, apart from heated discussion between both sides ...
Tópico(s): Historical Influence and Diplomacy
2010 - Taylor & Francis | Reformation and Renaissance Review
Andreas Gladisch, Ralf-Peter Braun, D. Breuer, A. Ehrhardt, H.-M. Foisel, Márcia Martins Marques, R. Leppla, M. Schneiders, S. Vorbeck, W. Weiershausen, Fritz-Joachim Westphal,
Optical systems and technologies have been radically changing the telecommunication networks for past 15 years; today wavelength division multiplexing (WDM) technology, optical amplifiers, and simple optical switching elements like optical add-drop multiplexers (OADMs) are used in the backbone networks of all operators worldwide. Optical systems nowadays provide the basis for cost-effective transmission of large amounts of bandwidth over the Internet, and will enable its future growth and the spreading ...
Tópico(s): Advanced Photonic Communication Systems
2006 - Institute of Electrical and Electronics Engineers | Proceedings of the IEEE
U. Hilbk, T. Hermes, J. Saniter, Fritz-Joachim Westphal,
An all-optical passive WDM high capacity overlay on a PON is proposed and experimentally verified, using AWGs and direct detection receivers. The unmodified outside fibre plant and the AWG can be supervised from the CO.
Tópico(s): Optical Network Technologies
1996 - Institution of Engineering and Technology | Electronics Letters
R. Schnabel, U. Hilbk, T. Hermes, P. Meißner, C. von Helmolt, K. Magari, F. Raub, W. Pieper, Fritz-Joachim Westphal, R. Ludwig, L. Küller, H.G. Weber,
Four-wave-mixing based on ultrafast nonlinear gain dynamics in a semiconductor laser amplifier was applied for wavelength conversion of a 10-channel OFDM signal with a channel spacing of 9 GHz and a modulation rate of 140 Mb/s per channel. Conversion over 275 GHz was realised. BER measurements revealed no severe system degradation due to polarisation fluctuations or cross-talk. >
Tópico(s): Photonic and Optical Devices
1994 - Institute of Electrical and Electronics Engineers | IEEE Photonics Technology Letters
E.-J. Bachus, Ralf-Peter Braun, C. Caspar, H.-M. Foisel, Etienne Grossmann, B. Strebel, Fritz-Joachim Westphal,
Optical coherent multicarrier systems with highly selective tunable optical heterodyne receivers can be used for transmission and switching of broadband signals. Some technical solutions for coherent bidirectional subscriber lines, a ten-channel distribution system, and a switching setup with computer-controlled receiver tuning are presented. The laboratory experiments, including carrier-frequency stabilization, multiplexing, and demultiplexing, as well as the fiber components used, are described. ...
Tópico(s): Nonlinear Optical Materials Research
1989 - Institute of Electrical and Electronics Engineers | Journal of Lightwave Technology
E.-J. Bachus, Ralf-Peter Braun, C. Caspar, Etienne Grossmann, H.-M. Foisel, K. Heimes, H. Lamping, B. Strebel, Fritz-Joachim Westphal,
A laboratory ten-channel coherent fibre-optic broadband transmission system is reported. The frequency-division-multiplexed optical carriers are separated by 6 GHz and are demultiplexed by a tunable heterodyne receiver having a sensitivity of -46 dBm at a bit error rate of 10-9. In this system a maximum number of 64 channels can be installed.
Tópico(s): Advanced Photonic Communication Systems
1986 - Institution of Engineering and Technology | Electronics Letters
Dirk Westphal, Joachim Kreidler,
Between 1973 and 1976 thirty-one patients with the symptoms of a blow-out fracture underwent sinuscopy. In all these cases a precise diagnosis was not possible from the clinical and x-ray findings alone without exploratory surgery. In 28 cases an exact diagnosis could be made using sinuscopy; 21 patients with blow-out fractures underwent reconstructive surgery to the orbital floor. In the remaining 7 cases fracture of the orbital floor was ruled out and the patients were spared more extensive diagnostic ...
Tópico(s): Sinusitis and nasal conditions
1977 - Churchill Livingstone | Journal of Maxillofacial Surgery
Christoph Klinger, Bettina Riecken, Johannes Müller, Anja Westphal, Joachim Löffler, Eckhart Froehlich, Karel Caca,
Abstract Purpose The purpose of this study was to determine accuracy and necessity of long-term Doppler ultrasound (DU) surveillance of transjugular intrahepatic portosystemic shunt (TIPS) patency after implantation of an ePTFE-covered stent-graft (Viatorr). Methods This single-center retrospective study includes 228 consecutive cirrhotic patients with TIPS implantation due to portal hypertensive complications. Standardized DU surveillance was scheduled 3 – 5 days, 3 months, and 6 months after TIPS implantation ...
Tópico(s): Organ Transplantation Techniques and Outcomes
2018 - Thieme Medical Publishers (Germany) | Zeitschrift für Gastroenterologie
C. Westphal, Joachim Bansmann, M. Getzlaff, G. Schönhense,
A new phenomenon in photoemission from adsorbates is reported. With circularly polarized synchrotron radiation and a special observation geometry (defining a ‘handedness’ of the directions of photon impact, electron ejection and surface normal) photoemission intensity asymmetries arise upon reversal of photon helicity. Circular Dichroism in the Angular Distribution of photoelectrons (CDAD) has been theoretically predicted in the pure electric dipole approximation. The phenomenon should occur for all ...
Tópico(s): Electron and X-Ray Spectroscopy Techniques
1990 - Elsevier BV | Vacuum
C. Westphal, Joachim Bansmann, M. Getzlaff, G. Schönhense,
Tópico(s): Photocathodes and Microchannel Plates
1990 - Elsevier BV | Journal of Electron Spectroscopy and Related Phenomena
Manfred Westphal, Oliver Heese, Joachim P. Steinbach, Oliver Schnell, Gabriele Schackert, H. Maximilian Mehdorn, D. Schulz, Matthias Simon, Uwe Schlegel, Christian Senft, Karsten Geletneky, Christian Braun, Joachim Härtung, Dirk Reuter, Monika Warmuth Metz, F. Bach, Torsten Pietsch,
A randomised, open label phase III trial was conducted to evaluate efficacy of nimotuzumab, a monoclonal antibody against epidermal growth factor receptor (EGF-R) added to standard therapy for newly diagnosed glioblastoma.149 glioblastoma patients stratified as with or without residual tumour were randomly assigned to receive either intravenous nimotuzumab 400mg weekly added to standard radiochemotherapy followed by 400mg biweekly after twelve weeks or standard radiochemotherapy. Progression status ...
Tópico(s): Cancer Immunotherapy and Biomarkers
2015 - Elsevier BV | European Journal of Cancer
Markus Guba, Johann Pratschke, Christian Hugo, Bernhard K. Krämer, Constanze Nohr-Westphal, Jens Brockmann, Joachim Andrassy, Petra Reinke, Katharina Pressmar, Oliver W. Hakenberg, Michael Fischereder, Andreas Pascher, Wolf‐Dieter Illner, Bernhard Banas, Karl‐Walter Jauch,
Background. De novo sirolimus in calcineurin inhibitor-free regimens, although potentially useful to improve early renal function, are complicated by various drug-related side effects. Methods. We report a prospective open-label, multicenter, randomized trial to evaluate early conversion from a CsA-based to a sirolimus (SRL)-based regimen 10 to 24 days after renal transplantation. Of the 196 patients, 141 patients with a low-to-moderate immunological risk were eligible to be converted to SRL or to ...
Tópico(s): Neurological Complications and Syndromes
2010 - Wolters Kluwer | Transplantation
... Irene Dingel /Michael Rohrschneider/ Inken Schmidt-Voges/Siegrid Westphal /Joachim Whaley. was published on July 1, 2022 in ...
Tópico(s): Law and Political Science
2022 - De Gruyter | Zeitschrift der Savigny-Stiftung für Rechtsgeschichte Kanonistische Abteilung
C. Westphal, F. Fegel, Joachim Bansmann, M. Getzlaff, G. Schönhense, J. A. Stephens, Vincent McKoy,
The sensitivity and utility of circular dichroism in the angular distribution of photoelectrons (CDAD) as a probe of molecular orientation is demonstrated for adsorbed CO and NO molecules. A comparison between measured CDAD spectra and calculated values for spatially oriented CO and NiCO clearly confirms the well-known perpendicular adsorption for CO on Ni(100), whereas for CO adsorbed on Fe(100) a tilted adsorption geometry was found. For NO/Ni(100) and for NO on the oxygen-preadsorbed Ni(100) surface, ...
Tópico(s): Catalytic Processes in Materials Science
1994 - American Physical Society | Physical review. B, Condensed matter
K. Westphal, Christian Byhahn, Hans‐Joachim Wilke, V. Lischke,
A number of percutaneous procedures for tracheostomy have been established within the last few years, among them a new technique by Fantoni using a translaryngeal approach for cannula placement. To compare the new translaryngeal tracheostomy (TLT) to the common percutaneous dilatational technique (PDT), we prospectively studied 90 patients who required elective tracheostomy. Tracheostomy was performed according to either the Ciaglia or the Fantoni technique in 45 patients at bedside. The overall complication ...
Tópico(s): Head and Neck Surgical Oncology
1999 - Lippincott Williams & Wilkins | Anesthesia & Analgesia
K. Westphal, Christian Byhahn, Hans‐Joachim Wilke, V. Lischke,
A number of percutaneous procedures for tracheostomy have been established within the last few years, among them a new technique by Fantoni using a translaryngeal approach for cannula placement. To compare the new translaryngeal tracheostomy (TLT) to the common percutaneous dilatational technique (PDT), we prospectively studied 90 patients who required elective tracheostomy. Tracheostomy was performed according to either the Ciaglia or the Fantoni technique in 45 patients at bedside. The overall complication ...
Tópico(s): Head and Neck Surgical Oncology
1999 - Lippincott Williams & Wilkins | Anesthesia & Analgesia
V. Lischke, K. Westphal, M. Behne, Hans‐Joachim Wilke, Daniel Rosenthal, Gerhard Marquardt, Paul Kessler,
Background: The thoracoscopic microsurgical technique (TMT) for vertebral and spinal cord surgery is associated with the benefits of reduced postoperative pain, accelerated return to physical activity and reduced complication rates. However, because of the surgeon's requirement of a non‐ventilated lung, it confronts the anesthesiologist with the need for extremely long duration of single‐lung ventilation (SLV). Methods: We describe our experiences with 82 patients, whom we anesthetised from 1993 until ...
Tópico(s): Airway Management and Intubation Techniques
1998 - Wiley | Acta Anaesthesiologica Scandinavica
2023 - Duncker & Humblot | Das Historisch-Politische Buch
Ralf Steudel, Ursula Westphal, Joachim Pickardt,
Abstract The tetrathiaoxalate complex Cp 4 Ti 2 C 2 S 4 ( 1 ) reacts with an equimolar amount of COCl 2 to give the blue‐green mononuclear complex Cp 2 TiC 2 S 4 CO ( 4 ). This reaction is analogous to the known reactions of 1 with SCl 2 or S 2 Cl 2 . However, when 1 was treated with equimolar amounts of the bifunctional sulfenyl chlorides 1,2‐C 2 H 4 (SCl) 2 ( 5 ), 1,3‐C 3 H 6 (SCl) 2 ( 6 ) or 1,2‐C 6 H 4 (SCl) 2 ( 7 ), the bi‐ or monocyclic tetrakisdisulfanes C 6 H 8 S 8 ( 9b ), C 8 H 12 S 8 ( 10 ), and C 14 H 8 S 8 ( 11 ), respectively, ...
Tópico(s): Organometallic Complex Synthesis and Catalysis
1995 - Wiley | Chemische Berichte
G. Schönhense, M. Getzlaff, C. Westphal, B. Heidemann, Joachim Bansmann,
The influence of the ferromagnetism of 3d-metal substrates upon the electronic states of "nonmagnetic" adsorbate overlayers like oxygen and sulphur has been investigated by means of photoelectron spinpolarization spectroscopy.The spectra reveal a substantial exchange splitting of the 0 2 p and S 3pderived bands in chemisorption on Fe and FeCo.This demonstrates the strong magnetic coupling of these species with the substrate.
Tópico(s): Iron oxide chemistry and applications
1988 - EDP Sciences | Le Journal de Physique Colloques
Mario Kind, Róbert Szabó, Cătălin Meiroşu, Fritz-Joachim Westphal,
Abstract Carrier networks are faced with continuous transformations of their technology platforms in order to keep up with the changing customer demands. This paper will show how the transition from stovepipe networks to layered architectures enabled the shift to a future network design based on a network operation system (NetOS) operating the ICT fabric containing merely any kind of resources. Basic, underlying concepts are presented and detailed how they will be integrated in this environment. ...
Tópico(s): Network Time Synchronization Technologies
2015 - R. Oldenbourg Verlag | it - Information Technology
Jutta Dierkes, Cornelia Weikert, Kerstin Klipstein‐Grobusch, Sabine Westphal, Claus Luley, Matthias Möhlig, Joachim Spranger, Heiner Boeing,
Retrospective studies indicate that low concentrations of plasma pyridoxal-5-phosphate (PLP) are associated with cardiovascular events; however, few prospective studies of this issue have been conducted.We therefore investigated whether PLP concentrations are independently associated with myocardial infarction (MI) in the European Investigation into Cancer and Nutrition (EPIC) Potsdam Study.After exclusion of prevalent MI or stroke, incident cases of MI were identified among 26 761 participants (aged ...
Tópico(s): Metabolism, Diabetes, and Cancer
2007 - Elsevier BV | American Journal of Clinical Nutrition
Kostas Pentikousis, Cătălin Meiroşu, Diego López, Spyros Denazis, Kohei Shiomoto, Fritz-Joachim Westphal,
The introduction of software-defined networking (SDN) and network function virtualization (NFV) has altered, in a wholesale manner, the way to plan for network infrastructure evolution in the forthcoming decade. This Feature Topic aims to provide a concise reference entry point to a wider audience with respect to carrier-grade networking and service virtualization with emphasis on automating the entire networking and cloud infrastructure. The first steps in network virtualization are already taking ...
Tópico(s): Software System Performance and Reliability
2015 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine