Burckhardt Helferich, Helmut Rauch,
... Universität GreifswaldSearch for more papers by this authorHelmut Rauch, Helmut Rauch Chemisches Institut der Universität GreifswaldSearch for more ... Universität GreifswaldSearch for more papers by this authorHelmut Rauch, Helmut Rauch Chemisches Institut der Universität GreifswaldSearch for more papers ...
Tópico(s): Cancer Treatment and Pharmacology
1927 - Wiley | Justus Liebig s Annalen der Chemie
Burckhardt Helferich, Helmut Rauch,
... Universität GreifswaldSearch for more papers by this authorHelmut Rauch, Helmut Rauch Chem. Institut d. Universität GreifswaldSearch for more ... Universität GreifswaldSearch for more papers by this authorHelmut Rauch, Helmut Rauch Chem. Institut d. Universität GreifswaldSearch for more papers ...
Tópico(s): Amino Acid Enzymes and Metabolism
1926 - Wiley | Berichte der Deutschen Chemischen Gesellschaft. Abteilung B, Abhandlungen
... Information due to Postselection in Neutron Interferometry HELMUT RAUCH, HELMUT RAUCH Atominstitut der Österreichischen Universitäten, A-1020 Wien, AustriaSearch for more papers by this author HELMUT RAUCH, HELMUT RAUCH Atominstitut der Österreichischen Universitäten, A-1020 Wien, AustriaSearch ...
Tópico(s): Atomic and Subatomic Physics Research
1995 - Wiley | Annals of the New York Academy of Sciences
Heinz Hoefler, H. J. Rauch, Helmut Kerl, Helmut Denk,
The presence and distribution of cytokeratins, actin, neurofilament protein, neuron-specific enolase, S-100 protein, and different neuropeptides were studied immunohistochemically by the peroxidase-antiperoxidase immunoenzyme method or the avidin-biotin-peroxidase technique in 10 patients with primary cutaneous neuroendocrine carcinoma. In all cases of cutaneous neuroendocrine carcinoma, immunoreactivity for neuron-specific enolase, cytokeratin, and neurofilament was identified. No staining was ...
Tópico(s): Salivary Gland Tumors Diagnosis and Treatment
1984 - Lippincott Williams & Wilkins | American Journal of Dermatopathology
Manuel Woschank, Erwin Rauch, Helmut Zsifkovits,
Industry 4.0 concepts and technologies ensure the ongoing development of micro- and macro-economic entities by focusing on the principles of interconnectivity, digitalization, and automation. In this context, artificial intelligence is seen as one of the major enablers for Smart Logistics and Smart Production initiatives. This paper systematically analyzes the scientific literature on artificial intelligence, machine learning, and deep learning in the context of Smart Logistics management in industrial ...
Tópico(s): Transport and Logistics Innovations
2020 - Multidisciplinary Digital Publishing Institute | Sustainability
... tests in the laboratory. In the following decade, Helmut Rauch and co-workers implemented interferometric verifications of 4π ...
Tópico(s): Nuclear Physics and Applications
2001 - IOP Publishing | Measurement Science and Technology
Manuel Großgasteiger, Maximilian D. Hien, Bastian Graser, Helmut Rauch, Matthias Gondan, J. Motsch, Christian Rosendal,
Transesophageal echocardiography is recommended to monitor left ventricular ( LV ) size and function in various operations. Generally, two‐dimensional (2 D ) methods are applied intraoperatively. The aim of this study was to compare the accuracy and feasibility of 6 commonly used 2 D methods to assess LV function during surgery. LV function in 120 consecutive patients was evaluated. Real time three‐dimensional transesophageal echocardiograpy (3DTEE) served as reference. End‐diastolic and end‐systolic volumes ...
Tópico(s): Cardiac Imaging and Diagnostics
2013 - Wiley | Echocardiography
Maximilian D. Hien, Manuel Großgasteiger, Helmut Rauch, Alexander Weymann, Raffi Bekeredjian, Christian Rosendal,
Background Three-dimensional (3D) transesophageal echocardiography (TEE) has been claimed to provide more information than two-dimensional (2D) TEE in the localization of mitral valve prolapse (MVP). However, most studies have been performed by experts in echocardiography, without accounting for differences in training or expertise. This multicenter study was designed to assess the differences between experts and inexperienced echocardiographers in localizing MVP and ruptured chordae tendineae using 2D and real- ...
Tópico(s): Cardiac Imaging and Diagnostics
2013 - Elsevier BV | Journal of the American Society of Echocardiography
Maximilian D. Hien, Helmut Rauch, Artur Lichtenberg, Raffaele De Simone, Marc Weimer, Oriana Ponta, Christian Rosendal,
Successful surgical repair of a regurgitant mitral valve (MV) is dependent on a comprehensive assessment of its complex anatomy. Although there is limited evidence of the feasibility and accuracy of intraoperative real-time 3-dimensional transesophageal echocardiography (RT3DTEE) in MV surgery, its use is increasing worldwide. We designed this prospective observational study of patients with mitral regurgitation to test initial findings on the accuracy of RT3DTEE images in the diagnosis of MV prolapse ...
Tópico(s): Aortic Disease and Treatment Approaches
2012 - Lippincott Williams & Wilkins | Anesthesia & Analgesia
Henry E. Fischer, J. Mike Simonson, Jörg Neuefeind, Hartmut Lemmel, Helmut Rauch, Anita Zeidler, Philip S. Salmon,
The technique of neutron interferometry was used to measure the bound coherent neutron scattering length b(coh) of the oxygen isotopes (17)O and (18)O. From the measured difference in optical path between two water samples, either H(2)(17)O or H(2)(18)O versus H(2)(nat)O, where nat denotes the natural isotopic composition, we obtain b(coh,(17)O) = 5.867(4) fm and b(coh,(18)O) = 6.009(5) fm, based on the accurately known value of b(coh,(nat)O) = 5.805(4) fm which is equal to b(coh,(16)O) within the experimental ...
Tópico(s): X-ray Diffraction in Crystallography
2012 - IOP Publishing | Journal of Physics Condensed Matter
Christian Rosendal, Maximilian D. Hien, Thomas Brückner, Eike Martin, Gábor Szabó, Helmut Rauch,
Background The impact of mitral valve surgery on left ventricular outflow tract (LVOT) dimensions is unclear. Real-time three-dimensional transesophageal echocardiography permits excellent visualization of the LVOT and might improve standard two-dimensional measurements. In this study, LVOT area and shape were assessed before and after mitral valve surgery. Methods Thirty-five patients undergoing mitral valve repair or replacement were retrospectively included in the study and compared with 15 patients ...
Tópico(s): Cardiac Structural Anomalies and Repair
2011 - Elsevier BV | Journal of the American Society of Echocardiography
Tsvetomir Loukanov, Dietrich Bucsenez, W Springer, Christian Sebening, Helmut Rauch, E. Roesch, Matthias Karck, Matthias Gorenflo,
Tópico(s): Hemodynamic Monitoring and Therapy
2011 - Springer Science+Business Media | Clinical Research in Cardiology
Anita Zeidler, Philip S. Salmon, Henry E. Fischer, Jörg Neuefeind, J. Mike Simonson, Hartmut Lemmel, Helmut Rauch, Thomas E. Markland,
The method of oxygen isotope substitution in neutron diffraction is introduced as a site specific structural probe. It is employed to measure the structure of light versus heavy water, thus circumventing the assumption of isomorphism between H and D as used in more traditional neutron diffraction methods. The intramolecular and intermolecular O-H and O-D pair correlations are in excellent agreement with path integral molecular dynamics simulations, both techniques showing a difference of ≃0.5% between ...
Tópico(s): Geological Studies and Exploration
2011 - American Physical Society | Physical Review Letters
Neutrons are suitable tools for quantum experiments since they are massive, experience nuclear, electromagnetic and gravitational interaction and are easy to manipulate and to detect. Perfect crystal interferometry opened new possibilities to explore quantum phenomena on a new ground. The 4π-symmetry of spinor wave functions, the spin-superposition law, topological quantum phases and various gravitational effects have been examined using this method. Experiments exploiting contextuality and Kochen– ...
Tópico(s): Biofield Effects and Biophysics
2011 - IOP Publishing | New Journal of Physics
Yuji Hasegawa, Rudolf Loidl, G. Badurek, Katharina Durstberger-Rennhofer, Stephan Sponar, Helmut Rauch,
We implemented a triply entangled Greenberger-Horne-Zeilinger(GHZ)-like state and coherently manipulated the spin, path, and energy degrees of freedom in a single neutron system. The GHZ-like state was analyzed with an inequality derived by Mermin: we determined the four expectation values and finally obtained M = 2.558 +/- 0.004 > 2, which exhibits a clear violation of the noncontextual assumption and confirms quantum contextuality.
Tópico(s): Quantum Information and Cryptography
2010 - American Physical Society | Physical Review A
Yuji Hasegawa, Katharina Durstberger-Rennhofer, Stephan Sponar, Helmut Rauch,
The Kochen-Specker theorem theoretically shows evidence of the incompatibility of noncontextual hidden variable theories with quantum mechanics. Quantum contextuality is a more general concept than quantum non-locality which is quite well tested in experiments by using Bell inequalities. Within neutron interferometry we performed an experimental test of the Kochen-Specker theorem with an inequality, which identifies quantum contextuality, by using spin-path entanglement in a single neutron system. ...
Tópico(s): Quantum Information and Cryptography
2010 - Elsevier BV | Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Richard Sakurovs, A. P. Radliński, Yuri B. Melnichenko, Tomas Blach, Gang Cheng, Hartmut Lemmel, Helmut Rauch,
Small-angle neutron scattering (SANS) and ultra-small-angle neutron scattering (USANS) measurements of the structure of two Australian bituminous coals (particle size of 1−0.5 mm) before, during, and after exposure to 155 bar of helium were made to identify any effects of pressure alone on the pore size distribution of coal and any irreversible effects upon exposure to high pressures of helium in the pore size range from 3 nm to 10 μm. No irreversible effects upon exposure were identified for any pore ...
Tópico(s): Coal and Its By-products
2009 - American Chemical Society | Energy & Fuels
Adán Cabello, Stefan Filipp, Helmut Rauch, Yuji Hasegawa,
We show that an experimental demonstration of quantum contextuality using 2 degrees of freedom of single neutrons based on a violation of an inequality derived from the Peres-Mermin proof of the Kochen-Specker theorem would be more conclusive than those obtained from previous experiments involving pairs of ions [M. A. Rowe, Nature (London) 409, 791 (2001)10.1038/35057215] and single neutrons [Y. Hasegawa, Nature (London) 425, 45 (2003)10.1038/nature01881] based on violations of Clauser-Horne-Shimony-Holt- ...
Tópico(s): Paranormal Experiences and Beliefs
2008 - American Physical Society | Physical Review Letters
V.O. de Haan, Jeroen Plomp, Wim G. Bouwman, M. Trinker, M. Theo Rekveldt, Chris P. Duif, E. Jericha, Helmut Rauch, A.A. van Well,
The phase-object approximation for neutron scattering based on a one-dimensional dynamic forward scattering theory is discussed and used to calculate the differential cross section of an object. It is shown that this approximation is valid in ultra-small-angle neutron scattering (USANS) and spin-echo small-angle neutron scattering (SESANS) experiments on silicon gratings. In the weak scattering limit, the phase-object approximation reduces to the kinematic or first Born approximation. The spatial ...
Tópico(s): Advanced X-ray Imaging Techniques
2007 - Wiley | Journal of Applied Crystallography
Yuji Hasegawa, Rudolf Loidl, G. Badurek, Stefan Filipp, Jürgen Klepp, Helmut Rauch,
Tomographic measurements of Bell states of a single-neutron system in an interferometer were carried out. The spin-path joint measurements exhibit clear evidence of entanglement. Reconstructions of the density matrices of, practically complete, Bell states were accomplished. The fidelities as well as the concurrences of the generated states are determined by 0.79 and 0.75 as well as 0.59 and 0.52, respectively, which are again clear evidence of the spin-path entanglement in a single-neutron system.
Tópico(s): Quantum Information and Cryptography
2007 - American Physical Society | Physical Review A
Yuji Hasegawa, Rudolf Loidl, G. Badurek, Matthias Baron, Helmut Rauch,
An experimental demonstration of quantum contextuality with neutrons is presented, which intended to exhibit a Kochen-Specker-like phenomenon. Since no perfect correlation is expected in practical experiments, inequalities are derived to distinguish quantitatively the obtained results from predictions by a noncontextual hidden variable theory. Experiments were accomplished with the use of a neutron interferometer combined with spinor manipulation devices. The results clearly violate the prediction ...
Tópico(s): Statistical Mechanics and Entropy
2006 - American Physical Society | Physical Review Letters
Stefan Filipp, Yuji Hasegawa, Rudolf Loidl, Helmut Rauch,
We present a split-beam neutron interferometric experiment to test the noncyclic geometric phase tied to the spatial evolution of the system: The subjacent two-dimensional Hilbert space is spanned by the two possible paths in the interferometer, and the evolution of the state is controlled by phase shifters and absorbers. A related experiment was reported previously by Hasegawa et al. [Phys Rev A 53, 2486 (1996)] to verify the cyclic spatial geometric phase. The interpretation of this experiment, ...
Tópico(s): Quantum Mechanics and Applications
2005 - American Physical Society | Physical Review A
K. Machida, Hiromichi Nakazato, Saverio Pascazio, Helmut Rauch, Sixia Yu,
The dynamics of a quantum system undergoing frequent ``measurements,'' leading to the so-called quantum Zeno effect, is examined on the basis of a neutron-spin experiment recently proposed for its demonstration. Unlike in all previous studies, the spatial degrees of freedom of the neutron are duly taken into account. Their inclusion in the analysis is important for two reasons: first, neutron-reflection effects are shown to be very important; second, the evolution may turn out to be totally different ...
Tópico(s): Quantum chaos and dynamical systems
1999 - American Physical Society | Physical Review A
Z. Hradil, Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio, Helmut Rauch,
The limit of infinitely many measurements is critically analyzed within the quantum mechanical framework, in connection with the quantum Zeno effect. It is shown that such a limit is unphysical and that quantum losses are unavoidable. A specific example involving neutron spin is considered.
Tópico(s): Quantum Information and Cryptography
1998 - Elsevier BV | Physics Letters A
Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio, Helmut Rauch,
The quantum Zeno effect consists in the hindrance of the evolution of a quantum system that is very frequently monitored and found to be in its initial state at every single measurement. On the basis of the correct formula for the survival probability, i.e. the probability of finding the system in its initial state at every single measurement, we critically analyze a recent proposal and experimental test that make use of an oscillating system.
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
1996 - Elsevier BV | Physics Letters A
Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio, Helmut Rauch,
The limit of infinitely frequent measurements (continuous observation), yielding the quantum Zeno paradox, is critically analyzed and shown to be unphysical. A specific example involving neutron spin is considered and some practical estimates are given.
Tópico(s): Cold Fusion and Nuclear Reactions
1995 - Elsevier BV | Physics Letters A
Bernd W. Böttiger, Helmut Rauch, H. Böhrer, J. Motsch, Michael Soder, F. Fleischer, Eike Martin,
Objective: Continuous thermodilution cardiac output (CCO) measurement was clinically evaluated in patients who underwent coronary revascularization using hypothermic low-flow, low-pressure cardiopulmonary bypass (CPB). Design: Prospective study. Setting: University hospital setting. Participants: 30 cardiac surgical patients. Interventions: CCO was correlated to standard bolus thermodilution cardiac output (ICO) obtained at end-expiration. Measurements and Main Results: Measurements were taken at selected ...
Tópico(s): Infrared Thermography in Medicine
1995 - Elsevier BV | Journal of Cardiothoracic and Vascular Anesthesia
W. Bauspiess, U. Bonse, Helmut Rauch,
The basic characteristics and the instrumentation of the experimental interferometer setup at the Institut Max von Laue - Paul Langevin (I.L.L.), Grenoble are outlined. The instrument incorporates a triple Laue-case (“LLL-type”) Bragg diffraction interferometer. The interference contrast of a real interferometer crystal as compared to the ideal model is discussed. The diffractometer used for the experiment as well as the environmental requirements are described. As an example, the application of the ...
Tópico(s): Radiation Detection and Scintillator Technologies
1978 - Elsevier BV | Nuclear Instruments and Methods
Mario Villa, Matthias Baron, M. Hainbuchner, E. Jericha, V. Leiner, Dieter Schwahn, E. Seidl, J. Stahn, Helmut Rauch,
Bonse-Hart double-crystal diffractometers (DCDs) with multi-bounce channel-cut crystals show rocking curves that depart dramatically from dynamical diffraction theory in their wings. The intrinsic background is many orders of magnitude higher than the predictions of dynamical diffraction theory. This effect was studied at the ultra-small-angle neutron scattering facility at the Atominstitut in Wien and at facilities in Grenoble, Jülich and Villigen. The scattering intensity contains Bragg reflections ...
Tópico(s): Machine Learning in Materials Science
2003 - Wiley | Journal of Applied Crystallography
Yuji Hasegawa, Rudolf Loidl, G. Badurek, Matthias Baron, Helmut Rauch,
Tópico(s): Atomic and Subatomic Physics Research
2003 - Nature Portfolio | Nature