185 research outputs found

    Quasinormal modes of gravitational perturbation around a Schwarzschild black hole surrounded by quintessence

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    In this paper, the quasinormal modes of gravitational perturbation around a Schwarzschild black hole surrounded by quintessence were evaluated by using the third-order WKB approximation. Due to the presence of quintessence, the gravitational wave damps more slowly

    Projections, Pseudo-Stopping Times and the Immersion Property

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    Given two filtrations FG\mathbb F \subset \mathbb G, we study under which conditions the F\mathbb F-optional projection and the F\mathbb F-dual optional projection coincide for the class of G\mathbb G-optional processes with integrable variation. It turns out that this property is equivalent to the immersion property for F\mathbb F and G\mathbb G, that is every F\mathbb F-local martingale is a G\mathbb G-local martingale, which, equivalently, may be characterised using the class of F\mathbb F-pseudo-stopping times. We also show that every G\mathbb G-stopping time can be decomposed into the minimum of two barrier hitting times

    Evaluation of a Phosphate Management Protocol to Achieve Optimum Serum Phosphate Levels in Hemodialysis Patients

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    Original article can be found at: http://www.sciencedirect.com/science/journal/10512276 Copyright National Kidney Foundation, Inc. DOI: 10.1053/j.jrn.2008.05.003To evaluate the effectiveness of a protocol designed to optimize serum phosphate levels in patients undergoing regular hemodialysis (HD).Peer reviewe

    Morgan, Nyla Margaret (Hammers) Moore, 1918-2017 (MSS 639)

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    Finding aid only for Manuscripts Collection 639. Information collected by Morgan about Butler County, Kentucky history and historical organizations. Genealogical records related to Morgan, Moore, and Johnson families (particularly the children of Christopher Columbus “Lum” Johnson, 1847-1921), as well as allied families. Includes two boxes of material related to theChurch of Jesus Christ of Latter-Day Saints in Kentucky,Tennessee, and West Virginia, particularly its women’s Relief Society

    Arbitrages in a Progressive Enlargement Setting

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    This paper completes the analysis of Choulli et al. Non-Arbitrage up to Random Horizons and after Honest Times for Semimartingale Models and contains two principal contributions. The first contribution consists in providing and analysing many practical examples of market models that admit classical arbitrages while they preserve the No Unbounded Profit with Bounded Risk (NUPBR hereafter) under random horizon and when an honest time is incorporated for particular cases of models. For these markets, we calculate explicitly the arbitrage opportunities. The second contribution lies in providing simple proofs for the stability of the No Unbounded Profit with Bounded Risk under random horizon and after honest time satisfying additional important condition for particular cases of models

    Driving an electrolyte through a corrugated nanopore

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    We characterize the dynamics of a zzz-z electrolyte embedded in a varying-section channel. In the linear response regime, by means of suitable approximations, we derive the Onsager matrix associated to externally enforced gradients in electrostatic potential, chemical potential, and pressure, for both dielectric and conducting channel walls. We show here that the linear transport coefficients are particularly sensitive to the geometry and the conductive properties of the channel walls when the Debye length is comparable to the channel width. In this regime, we found that one pair of off-diagonal Onsager matrix elements increases with the corrugation of the channel transport, in contrast to all other elements which are either unaffected by or decrease with increasing corrugation. Our results have a possible impact on the design of blue-energy devices as well as on the understanding of biological ion channels through membrane
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