Michael S. Warren, Peter J. Quinn, John K. Salmon, Wojciech H. Zurek,
... Michael S. ; Quinn, Peter J. ; Salmon, John K. ; Zurek, Wojciech H. Abstract We use N-body simulations on ...
Tópico(s): Scientific Research and Discoveries
1992 - IOP Publishing | The Astrophysical Journal
Wojciech H. Zurek, Peter J. Quinn, John K. Salmon, Michael S. Warren,
... Velocities and Correlations of Cold Dark Matter Halos Zurek, Wojciech H. ; Quinn, Peter J. ; Salmon, John K. ; Warren, ...
Tópico(s): Astronomy and Astrophysical Research
1994 - IOP Publishing | The Astrophysical Journal
Pablo Laguna, Warner A. Miller, Wojciech H. Zurek,
... a Black Hole Laguna, Pablo ; Miller, Warner A. ; Zurek, Wojciech H. Abstract We derive the smoothed particle hydrodynamic ...
Tópico(s): Pulsars and Gravitational Waves Research
1993 - IOP Publishing | The Astrophysical Journal
Pablo Laguna, Warner A. Miller, Wojciech H. Zurek, M. B. Davies,
... a Schwarzschild Background Laguna, Pablo ; Miller, Warner A. ; Zurek, Wojciech H. ; Davies, Melvyn B. Abstract We present a ...
Tópico(s): Mechanics and Biomechanics Studies
1993 - IOP Publishing | The Astrophysical Journal
Wojciech H. Zurek, Aneta Siemiginowska, Stirling A. Colgate,
... Origin of the Broad Lines in Quasars: Addendum Zurek, Wojciech H. ; Siemiginowska, Aneta ; Colgate, Stirling A. Abstract The ... Origin of the Broad Lines in Quasars" by Wojciech H. Zurek, Aneta Siemiginowska, and Stirling A. Colgate (ApJ, 434, ...
Tópico(s): Galaxies: Formation, Evolution, Phenomena
1996 - IOP Publishing | The Astrophysical Journal
... Access The many faces of information Wojciech Hubert Zurek, Wojciech Hubert Zurek Wojciech Hubert Zurek was educated in Krakow in his ... for more papers by this author Wojciech Hubert Zurek, Wojciech Hubert Zurek Wojciech Hubert Zurek was educated in Krakow in his native Poland ( ...
Tópico(s): Big Data Technologies and Applications
1995 - Hindawi Publishing Corporation | Complexity
Experimental studies of compressed matter are now routinely conducted at pressures exceeding 1 mln atm (100 GPa) and occasionally at pressures greater than 10 mln atm (1 TPa). The structure and properties of solids that have been so significantly squeezed differ considerably from those of solids at ambient pressure (1 atm), often leading to new and unexpected physics. Chemical reactivity is also substantially altered in the extreme pressure regime. In this feature paper we describe how synergy between ...
Tópico(s): Crystallography and molecular interactions
2014 - Royal Society of Chemistry | Physical Chemistry Chemical Physics
Justyna Lalak-Kańczugowska, Danuta Martyniak, Agnieszka Kasprzycka, Grzegorz Żurek, Wojciech Moroń, Mariola Chmielewska, Dariusz Wiącek, J. Tys,
Abstract As a fuel, biomass differs in its properties from fossil fuels and acquisition thereof for energy purposes is limited; hence, the ongoing search for new bioenergetically useful plants. The article presents the results of physical and chemical analyses of seven species of perennial grasses: tall wheatgrass, tall wheatgrass ‘Bamar’, brome grass, tall fescue ecotype, reed canary grass, giant miscanthus, and sorghum. The research involved technical and elemental analysis as well as analysis ...
Tópico(s): Renewable energy and sustainable power systems
2016 - De Gruyter Open | International Agrophysics
Marek Deja, Stanisław Woś, Krzysztof S. Gołba, Paweł Żurek, Wojciech Domaradzki, Ryszard Bachowski, Tomasz Spyt,
Background. The skeletonization of internal thoracic artery is postulated to improve graft length, early blood flow, sternal blood supply, and postoperative respiratory function. Concern exists that skeletonization may injure internal thoracic artery, precluding good results of surgery. Reports on endothelial function of skeletonized internal thoracic artery are lacking.Methods. A prospective assessment of early clinical outcomes of 357 consecutive patients undergoing coronary artery bypass grafting ...
Tópico(s): Congenital Heart Disease Studies
1999 - Elsevier BV | The Annals of Thoracic Surgery
Dominik Kurzydłowski, Mariana Derzsi, Eva Zurek, Wojciech Grochala,
The silver-fluorine phase diagram has been scrutinized as a function of external pressure using theoretical methods. Our results indicate that two novel stoichiometries containing Ag+ and Ag2+ cations (Ag3 F4 and Ag2 F3 ) are thermodynamically stable at ambient and low pressure. Both are computed to be magnetic semiconductors under ambient pressure conditions. For Ag2 F5 , containing both Ag2+ and Ag3+ , we find that strong 1D antiferromagnetic coupling is retained throughout the pressure-induced phase ...
Tópico(s): ZnO doping and properties
2021 - Wiley | Chemistry - A European Journal
... work of two physicists—H. Dieter Zeh and Wojciech Zurek. In the early 1970s Zeh anticipated many of ...
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
2009 - Elsevier BV | Studies in History and Philosophy of Science Part B Studies in History and Philosophy of Modern Physics
... spirit of quantum decoherence theory (see, for example, Wojciech Zurek’s article in PHYSICS TODAY, October 1991, page ...
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
2010 - AIP Publishing | Physics Today
Enrico Ruffini, Frank C. Detterbeck, Dirk Van Raemdonck, Gaetano Rocco, P. Thomas, Walter Weder, Alessandro Brunelli, Andrea Evangelista, Federico Venuta, Ala Khaled, Alex Arame, M. Refai, Caterina Casadio, Paolo Carbognani, Robert J. Cerfolio, Gabriele Donati, Christophoros N. Foroulis, Cengiz Gebitekin, David Gómez de Antonio, Kemp H. Kernstine, Shaf Keshavjee, Bernhard Moser, Cosimo Lequaglie, Moïshe Liberman, Eric Lim, Andrea Nicholson, Loı̈c Lang-Lazdunski, Monique Mancuso, Nasser K. Altorki, Mario Nosotti, Nuria M. Novoa, Geoffrey Brioude, A Oliaro, Pier Luigi Filosso, Salvino Saita, Marco Scarci, J Schützner, Alberto Terzi, Alper Toker, Hans Van Veer, Marco Anile, Erino Angelo Rendina, Luca Voltolini, Wojciech Żurek,
A retrospective database was developed by the European Society of Thoracic Surgeons, collecting patients submitted to surgery for thymic tumours to analyse clinico-pathological prognostic predictors.A total of 2151 incident cases from 35 institutions were collected from 1990 to 2010. Clinical-pathological characteristics were analysed, including age, gender, associated myasthenia gravis stage (Masaoka), World Health Organization histology, type of thymic tumour [thymoma, thymic carcinoma (TC), neuroendocrine ...
Tópico(s): Myasthenia Gravis and Thymoma
2014 - Oxford University Press | European Journal of Cardio-Thoracic Surgery
... with Charles Bennett, Norman Margolus, Tom Toffoli and Wojciech Zurek. This paper records Feynman's links with the ...
Tópico(s): DNA and Biological Computing
1999 - Taylor & Francis | Contemporary Physics
Robert Dziedzic, Wojciech Żurek, Tomasz Marjański, Piotr Rudziński, Tadeusz Orłowski, Wioletta Sawicka, Michał Marczyk, Joanna Polańska, Witold Rzyman,
Anatomical lobar resection and mediastinal lymphadenectomy remain the standard for the treatment of early stage non-small-cell lung cancer (NSCLC) and are preferred over procedures such as segmentectomy or wedge resection. However, there is an ongoing debate concerning the influence of the extent of the resection on overall survival. The aim of this article was to assess the overall survival for different types of resection for Stage I NSCLC.We performed a retrospective analysis of the results of ...
Tópico(s): Actinomycetales infections and treatment
2017 - Oxford University Press | European Journal of Cardio-Thoracic Surgery
Produção Nacional
Revisado por pares
Carlos Alexandre Brasil, Leonardo Andreta de Castro,
... decoherence and some of its follow-up until Wojciech Zurek's primordial paper that consolidated the concept of ...
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
2015 - IOP Publishing | European Journal of Physics
Wojciech H. Zurek, Juan Pablo Paz,
A Reply to the Comment by Giulio Casati and B. V. Chirikov.Received 6 March 1995DOI:https://doi.org/10.1103/PhysRevLett.75.351©1995 American Physical Society
Tópico(s): Theoretical and Computational Physics
1995 - American Physical Society | Physical Review Letters
William K. Wootters, Wojciech H. Zurek,
A detailed analysis of Einstein's version of the double-slit experiment, in which one tries to observe both wave and particle properties of light, is performed. Quantum nonseparability appears in the derivation of the interference pattern, which proves to be surprisingly sharp even when the trajectories of the photons have been determined with fairly high accuracy. An information-theoretic approach to this problem leads to a quantitative formulation of Bohr's complementarity principle for the case ...
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
1979 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
William K. Wootters, Wojciech H. Zurek,
Tópico(s): Biofield Effects and Biophysics
1982 - Nature Portfolio | Nature
It is shown that the entropy of the radiation evaporated by an uncharged, nonrotating black hole into vacuum in the course of its lifetime is approximately $\frac{4}{3}$ times the initial entropy of this black hole. Also considered is a thermodynamically reversible process in which an increase of black-hole entropy is equal to the decrease of the entropy of its surroundings. Implications of these results for the generalized second law of thermodynamics and for the interpretation of black-hole entropy ...
Tópico(s): Quantum Electrodynamics and Casimir Effect
1982 - American Physical Society | Physical Review Letters
Asher Peres, Wojciech H. Zurek,
Quantum theory has been criticized for not being deterministic and therefore not universal: it cannot completely describe a measurement aimed at verifying its predictions (although any given apparatus can be considered as a quantum system). We investigate the possible alternatives. Theories where the observed world is deterministic but the observer is not (whatever the reason for that) lead to Bell’s nonseparability theorem. If, on the other hand, the observer too is deterministic, the theory is not ...
Tópico(s): Philosophy and History of Science
1982 - American Institute of Physics | American Journal of Physics
We show how the correlations of a quantum system with other quantum systems may cause one of its observables to behave in a classical manner. In particular, "reduction of the wave packet," postulated by von Neumann to explain definiteness of an outcome of an individual observation, can be explained when a realistic model of an apparatus is adopted. Instead of an isolated quantum apparatus with a number of states equal to the number of possible distinct outcomes of the measurement, discussed by von ...
Tópico(s): Quantum Information and Cryptography
1982 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
The form of the interaction Hamiltonian between the apparatus and its environment is sufficient to determine which observable of the measured quantum system can be considered "recorded" by the apparatus. The basis that contains this record---the pointer basis of the apparatus---consists of the eigenvectors of the operator which commutes with the apparatus-environment interaction Hamiltonian. Thus the environment can be said to perform a nondemolition measurement of an observable diagonal in the pointer ...
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
1981 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
Wojciech H. Zurek, Don N. Page,
We investigate thermodynamic equilibrium of a self-gravitating perfect fluid in a spherically symmetric system containing a black hole of mass M by means of the Tolman-Oppenheimer-Volkoff (TOV) equation. At r >> 2M its solutions describe a black-body radiation atmosphere with the Hawking temperature T_BH~1/(8 \pi M) that is increasingly blueshifted as r approaches 2M. However, there is no horizon at the Schwarzschild radius. Instead, the fluid becomes increasingly hot and dense there, piling up into ...
Tópico(s): Quantum Electrodynamics and Casimir Effect
1984 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
Classical and quantum models of dynamically reversible computers are considered. Instabilities in the evolution of the classical "billard ball computer" are analyzed and shown to result in a one-bit increase of entropy per step of computation. "Quantum spin computers," on the other hand, are not only microscopically, but also operationally reversible. Readoff of the output of quantum computation is shown not to interfere with this reversibility. Dissipation, while avoidable in principle, can be used ...
Tópico(s): Advanced Thermodynamics and Statistical Mechanics
1984 - American Physical Society | Physical Review Letters
Wojciech H. Zurek, Kip S. Thorne,
It is shown that the entropy of a rotating, charged black hole is, in senses made precise in the paper, (i) the logarithm of the number of quantum mechanically distinct ways that the hole could have been made, and (ii) the logarithm of the number of configurations that the hole's "atmosphere," as measured by stationary observers, could assume in the presence of its background noise of acceleration radiation. In addition, a proof is given of the generalized second law of thermodynamics.
Tópico(s): Quantum Electrodynamics and Casimir Effect
1985 - American Physical Society | Physical Review Letters
view Abstract Citations (56) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Annihilation radiation from the galactic center - Positrons in dust? Zurek, W. H. Abstract HEAO 3 autumn 1979 gamma-ray observations of the galactic center indicate that the 2 gamma 0.511 MeV annihilation line contains - as compared with the observed 3 gamma continuum, which is also emitted in the annihilation process - more than 2 times as many photons as can be accounted for by ...
Tópico(s): Muon and positron interactions and applications
1985 - IOP Publishing | The Astrophysical Journal
Symmetry breaking phase transitions occurring in the early Universe are expected to leave behind long-lived topologically stable structures such as monopoles, strings or domain walls1–6. Here I discuss the analogy between cosmological strings and vortex lines in the superfluid, and suggest a cryogenic experiment which tests key elements of the cosmological scenario for string formation. In a superfluid obtained through a rapid pressure quench, the phase of the Bose condensate wavefunction—the 4He ...
Tópico(s): Black Holes and Theoretical Physics
1985 - Nature Portfolio | Nature
Arkady Kheyfets, Warner A. Miller, Wojciech H. Zurek,
We show that the smoothed-particle-hydrodynamics discretization technique is compatible with the principles of general relativity if the contact interactions are modeled by spatial smoothing functions in the local frame comoving with the fluid. We then develop a smoothed-particle-hydrodynamics algorithm to model a non-self-gravitating isentropic fluid on a curved background. The equations of the fluid are discretized using a kernel whose spatial support is of a constant proper width in the local ...
Tópico(s): Fluid Dynamics and Heat Transfer
1990 - American Physical Society | Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields
Annals of the New York Academy of SciencesVolume 480, Issue 1 p. 89-97 Reduction of the Wave Packet and Environment-Induced Superselection W. H. ZUREK, W. H. ZUREK Theoretical Astrophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 W. H. Zurek is a J. Robert Oppenheimer Fellow in theoretical astrophysics.Search for more papers by this author W. H. ZUREK, W. H. ZUREK Theoretical Astrophysics, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 W. H. Zurek is a J. Robert ...
Tópico(s): Quantum optics and atomic interactions
1986 - Wiley | Annals of the New York Academy of Sciences