Results 61 to 70 of about 939,747 (284)
Parasite, 2006 This study investigates the ecology of monogenean gill parasites of Astyanax altiparanae Garutti & Britski, 2000 and Rhamdia quelen (Quoy & Gaimard, 1824) in a stretch of the São Francisco Verdadeiro River, Paraná, Brazil.
Ferrari-Hoeinghaus A.P. +4 more
doaj +1 more source
, 2010 We study some particular solutions to the Navier-Stokes-Poisson equations with density-dependent viscosity and with pressure, in radial symmetry. With extension of the previous known blowup solutions for the Euler-Poisson equations / pressureless Navier ...
Hei, Yeung Ling, Manwai, Yuen
core +1 more source
Schrödinger-Poisson–Vlasov-Poisson correspondence
Physical Review D, 2018 The Schrödinger-Poisson equations describe the behavior of a superfluid Bose-Einstein condensate under self-gravity with a 3D wave function. As ℏ/m→0, m being the boson mass, the equations have been postulated to approximate the collisionless Vlasov-Poisson equations also known as the collisionless Boltzmann-Poisson equations.
Mocz, Philip +4 more
openaire +3 more sources
Retractions in Rheumatology: Trends, Causes, and Implications for Research Integrity
Arthritis Care &Research, EarlyView.Objective We aimed to describe the trends and main reasons for study retraction in rheumatology literature. Methods We reviewed the Retraction Watch database to identify retracted articles in rheumatology. We recorded the main study characteristics, authors’ countries, reasons for retraction, time from publication to retraction, and trends over time ...
Anna Maria Vettori, Michele Iudici
wiley +1 more source
A (2n+1)-dimensional quantum group constructed from a skew-symmetric matrix
, 2011 Beginning with a skew-symmetric matrix, we define a certain Poisson--Lie group. Its Poisson bracket can be viewed as a cocycle perturbation of the linear (or "Lie-Poisson") Poisson bracket.
Baaj +31 more
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Poisson cohomology of holomorphic toric Poisson manifolds. I [PDF]
Journal of Algebra, 2019 A holomorphic toric Poisson manifold is a nonsingular toric variety equipped with a holomorphic Poisson structure, which is invariant under the torus action. In this paper, we computed the Poisson cohomology groups for all holomorphic toric Poisson structures on $CP^n$, with the stand Poisson structure on $CP^n$ as a special case.
openaire +5 more sources
Poisson Reduction and Branes in Poisson?Sigma Models [PDF]
Letters in Mathematical Physics, 2004 18 pages. Version to appear in Lett.
Calvo, Iván, Falceto, Fernando
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Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control
Advanced Engineering Materials, EarlyView.This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian +4 more
wiley +1 more source
Some exact asymptotics in the counting of walks in the quarter plane [PDF]
Discrete Mathematics & Theoretical Computer Science, 2012 Enumeration of planar lattice walks is a classical topic in combinatorics, at the cross-roads of several domains (e.g., probability, statistical physics, computer science).
Guy Fayolle, Kilian Raschel
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Triangular Poisson structures on Lie groups and symplectic reduction
, 2004 We show that each triangular Poisson Lie group can be decomposed into Poisson submanifolds each of which is a quotient of a symplectic manifold. The Marsden-Weinstein-Meyer symplectic reduction technique is then used to give a complete description of the
Hodges, Timothy J., Yakimov, Milen
core +2 more sources