Zobrazeno 1 - 10
of 1 679
pro vyhledávání: '"Duignan P"'
Autor:
Duignan, Timothy T.
Potassium ion channels are critical components of biology. They conduct potassium ions across the cell membrane with remarkable speed and selectivity. Understanding how they do this is crucially important for applications in neuroscience, medicine, a
Externí odkaz:
http://arxiv.org/abs/2411.18931
Autor:
Duignan, Nathan, Sato, Naoki
Classical Hamiltonian mechanics, characterized by a single conserved Hamiltonian (energy) and symplectic geometry, `hides' other invariants into symmetries of the Hamiltonian or into the kernel of the Poisson tensor. Nambu mechanics aims to generaliz
Externí odkaz:
http://arxiv.org/abs/2411.18837
The paper reviews the notion of $n+\frac{1}{2}$D non-autonomous Hamiltonian systems, portraying their dynamics as the flow of the Reeb field related to a closed two-form of maximal rank on a cosymplectic manifold, and naturally decomposing into time-
Externí odkaz:
http://arxiv.org/abs/2407.05692
Ideal magnetohydrodynamic (MHD) equilibria on a Riemannian 3-manifold satisfy the stationary Euler equations for ideal fluids. A stationary solution $X$ admits a large set of ``adapted" metrics in $M$ for which $X$ solves the corresponding MHD equili
Externí odkaz:
http://arxiv.org/abs/2312.14368
Electrolyte solutions play critical role in a vast range of important applications, yet an accurate and scalable method of predicting their properties without fitting to experiment has remained out of reach, despite over a century of effort. Here, we
Externí odkaz:
http://arxiv.org/abs/2310.12535
The relationship between symmetry fields and first integrals of divergence-free vector fields is explored in three dimensions in light of its relevance to plasma physics and magnetic confinement fusion. A Noether-type Theorem is known: for each such
Externí odkaz:
http://arxiv.org/abs/2303.03191
Autor:
Duignan, Nathan, Meiss, James D.
Publikováno v:
Physica D 449: 133749 (2023
This paper investigates the utility of the weighted Birkhoff average (WBA) for distinguishing between regular and chaotic orbits of flows, extending previous results that applied the WBA to maps. It is shown that the WBA can be super-convergent for f
Externí odkaz:
http://arxiv.org/abs/2212.10783
Publikováno v:
Plasma Physics and Controlled Fusion 65(4): 045004 (2022)
A simple property of magnetic fields that minimizes bouncing to passing type transitions of guiding center orbits is defined and discussed. This property, called isoprominence, is explored through the framework of a near-axis expansion. It is shown t
Externí odkaz:
http://arxiv.org/abs/2210.10218
Autor:
Olga Boleti, Gabrielle Norrish, Ella Field, Kathleen Dady, Kim Summers, Gauri Nepali, Vinay Bhole, Orhan Uzun, Amos Wong, Piers E. F. Daubeney, Graham Stuart, Precylia Fernandes, Karen McLeod, Maria Ilina, Muhammad Najih Liaqath Ali, Tara Bharucha, Grazia Delle Donne, Elspeth Brown, Katie Linter, Caroline B. Jones, Jonathan Searle, William Regan, Sujeev Mathur, Nicola Boyd, Zdenka Reinhardt, Sophie Duignan, Terence Prendiville, Satish Adwani, Juan Pablo Kaski
Publikováno v:
ESC Heart Failure, Vol 11, Iss 2, Pp 923-936 (2024)
Abstract Aims This study aimed to describe the natural history and predictors of all‐cause mortality and sudden cardiac death (SCD)/equivalent events in children with a RASopathy syndrome and hypertrophic cardiomyopathy (HCM). Methods and results T
Externí odkaz:
https://doaj.org/article/774801a5c3044f99889a58c53cfad13e
