Institution
University of Warsaw
Education•Warsaw, Poland•
About: University of Warsaw is a education organization based out in Warsaw, Poland. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 20832 authors who have published 56617 publications receiving 1185084 citations. The organization is also known as: Uniwersytet Warszawski & Warsaw University.
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TL;DR: The formulation provides a clearly defined scheme to determine line properties from measured dependences of the contact angles on lens or drop volumes and shows how these coefficients transform as a function of the relative displacements of the dividing interfaces.
Abstract: We analyze two representative systems containing a three-phase-contact line: a liquid lens at a fluid-fluid interface and a liquid drop in contact with a gas phase residing on a solid substrate. In addition we study a system containing a planar liquid-gas interface in contact with a solid substrate. We discuss to which extent the decomposition of the grand canonical free energy of such systems into volume, surface, and line contributions is unique in spite of the freedom one has in positioning the Gibbs dividing interfaces. Curvatures of interfaces are taken into account. In the case of a lens it is found that the line tension is independent of arbitrary choices of the Gibbs dividing interfaces. In the case of a drop, however, one arrives at two different possible definitions of the line tension. One of them corresponds seamlessly to that applicable to the lens. The line tension defined this way turns out to be independent of choices of the Gibbs dividing interfaces. In the case of the second definition, however, the line tension does depend on the choice of the Gibbs dividing interfaces. We also provide form invariant equations for the equilibrium contact angles which properly transform under notional shifts of dividing interfaces which change the description of the system but leave the density configurations unchanged. It is shown that in order to accomplish this form invariance, additional stiffness coefficients attributed to the contact line must be introduced. The choice of the dividing interfaces influences the actual values of the stiffness coefficients. We show how these coefficients transform as a function of the relative displacements of the dividing interfaces. Our formulation provides a clearly defined scheme to determine line properties from measured dependences of the contact angles on lens or drop volumes. This scheme implies relations different from the modified Neumann or Young equations, which currently are the basis for extracting line tensions from experimental data. These relations show that the experiments do not render the line tension alone but a combination of the line tension, the Tolman length, and the stiffness coefficients of the line. In contrast to previous approaches our scheme works consistently for any choice of the dividing interfaces. It further allows us to compare results obtained by different experimental or theoretical methods, based on different conventions of choosing the dividing interfaces.
179 citations
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TL;DR: Using data from the MUPUS instrument package gathered at the Philae landing site Abydos on comet 67P/Churyumov-Gerasimenko, the diurnal temperature to vary between 90 and 130 K and a sintered near-surface microporous dust-ice layer with a porosity of 30 to 65% is consistent with the data.
Abstract: Thermal and mechanical material properties determine comet evolution and even solar system formation because comets are considered remnant volatile-rich planetesimals. Using data from the Multipurpose Sensors for Surface and Sub-Surface Science (MUPUS) instrument package gathered at the Philae landing site Abydos on comet 67P/Churyumov-Gerasimenko, we found the diurnal temperature to vary between 90 and 130 K. The surface emissivity was 0.97, and the local thermal inertia was 85 ± 35 J m−2 K−1s-1/2. The MUPUS thermal probe did not fully penetrate the near-surface layers, suggesting a local resistance of the ground to penetration of >4 megapascals, equivalent to >2 megapascal uniaxial compressive strength. A sintered near-surface microporous dust-ice layer with a porosity of 30 to 65% is consistent with the data.
179 citations
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TL;DR: In this paper, the normalized rapidity (y) and transverse momentum (qT) distributions of Drell-Yan muon and electron pairs in the Z-boson mass region (60
Abstract: Measurements of the normalized rapidity (y) and transverse momentum (qT) distributions of Drell-Yan muon and electron pairs in the Z-boson mass region (60
179 citations
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Joint Institute for Nuclear Research1, CERN2, University of Birmingham3, University of California, Los Angeles4, University of California, Davis5, University of Washington6, Lawrence Berkeley National Laboratory7, Max Planck Society8, University of Warsaw9, Yale University10, Kent State University11, University of Houston12, National and Kapodistrian University of Athens13
TL;DR: In this paper, yield and phase space distributions of φ -mesons emitted from p+p (minimum bias trigger), p+Pb (at various centralities) and central Pb+pb collisions are reported.
179 citations
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TL;DR: In this article, the authors review foundations and applications of the complex energy continuum shell model that provides a consistent many-body description of bound states, resonances, and scattering states, which can be considered a quasi-stationary open quantum system extension of the standard configuration interaction approach for well-bound (closed) systems.
Abstract: This work reviews foundations and applications of the complex-energy continuum shell model that provides a consistent many-body description of bound states, resonances, and scattering states. The model can be considered a quasi-stationary open quantum system extension of the standard configuration interaction approach for well-bound (closed) systems.
179 citations
Authors
Showing all 21191 results
Name | H-index | Papers | Citations |
---|---|---|---|
Alexander Malakhov | 139 | 1486 | 99556 |
Emmanuelle Perez | 138 | 1550 | 99016 |
Piotr Zalewski | 135 | 1388 | 89976 |
Krzysztof Doroba | 133 | 1440 | 89029 |
Hector F. DeLuca | 133 | 1303 | 69395 |
Krzysztof M. Gorski | 132 | 380 | 105912 |
Igor Golutvin | 131 | 1282 | 88559 |
Jan Krolikowski | 131 | 1289 | 83994 |
Michal Szleper | 130 | 1238 | 82036 |
Anatoli Zarubin | 129 | 1204 | 86435 |
Malgorzata Kazana | 129 | 1175 | 81106 |
Artur Kalinowski | 129 | 1162 | 81906 |
Predrag Milenovic | 129 | 1185 | 81144 |
Marcin Konecki | 128 | 1178 | 79392 |
Karol Bunkowski | 128 | 1192 | 79455 |