185 research outputs found
Quasinormal modes of gravitational perturbation around a Schwarzschild black hole surrounded by quintessence
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
Given two filtrations , we study under which
conditions the -optional projection and the -dual
optional projection coincide for the class of -optional processes
with integrable variation. It turns out that this property is equivalent to the
immersion property for and , that is every -local martingale is a -local martingale, which, equivalently, may
be characterised using the class of -pseudo-stopping times. We also
show that every -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
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)
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
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
We characterize the dynamics of a 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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