Results 61 to 70 of about 84,435 (298)

The application of iliac fascia space block combined with esketamine intravenous general anesthesia in PFNA surgery of the elderly: A prospective, single-center, controlled trial

open access: yesOpen Medicine, 2023
To observe the effect of iliac fascia space block combined with esketamine intravenous general anesthesia in proximal femoral nail antirotation (PFNA) of the elderly.
Jia Xuandong, Liao Xingzhi, Zhou Maitao
doaj   +1 more source

T-Duality and the Moment Map

open access: yes, 1997
Aspects of Poisson-Lie T-duality are reviewed in more algebraic way than in our, rather geometric, previous papers. As a new result, a moment map is constructed for the Poisson-Lie symmetry of the system consisting of open strings propagating in a Poisson-Lie group manifold.
Klimcik, C., Severa, P.
openaire   +2 more sources

Multi-moment maps

open access: yesAdvances in Mathematics, 2012
We introduce a notion of moment map adapted to actions of Lie groups that preserve a closed three-form. We show existence of our multi-moment maps in many circumstances, including mild topological assumptions on the underlying manifold. Such maps are also shown to exist for all groups whose second and third Lie algebra Betti numbers are zero.
Swann, Andrew Francis; id_orcid 0000-0002-1812-1009   +1 more
openaire   +3 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Earthquake Hazard ZONING by Fuzzy Logic in Dehek Area (South Khorasan) [PDF]

open access: yesجغرافیا و توسعه, 2018
In Southern Khorasan province (East of Iran), we are witnessing earthquakes with different magnitudes due to active faults (faults oriented north-south, east-west and north-west south-east). To minimize the damage, determining the areas of high potential
Mohtaram ghahramani   +3 more
doaj   +1 more source

Symplectic maps and hyperKähler moment map geometry

open access: yes, 2021
We obtain a correspondence between the group of symplectic diffeomorphisms of a 4-dimensional real torus and the vanishing locus of a certain hyperKähler moment map. This observation gives rise to a new flow, called the modified moment map flow. The construction can be adapted to the polyhedral setting, for which we prove a Duistermaat type theorem ...
openaire   +2 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Method of projection operator for the study of angle-averaged distribution function of beam particles in hadron storage rings

open access: yesPhysical Review Special Topics. Accelerators and Beams, 1998
Starting from the Vlasov equation for the single-particle phase-space distribution of beam particles in hadron storage rings, the angle-averaged distribution function of the action variables is studied by means of projection operator.
Demin Yao, Jicong Shi
doaj   +1 more source

Moment Maps for Torus Actions

open access: yesRocky Mountain Journal of Mathematics, 1996
This paper examines when a moment map exists for a symplectic torus action on a compact manifold. Having in mind that a moment map for a \(G\)-action restricts to a moment map for the action of a Lie subgroup \(H\subset G\), then, nonexistence results for \(S^1\)-actions extend to nonexistence results for torus actions.
openaire   +3 more sources

Homotopy moment maps

open access: yesAdvances in Mathematics, 2016
Associated to any manifold equipped with a closed form of degree >1 is an `L-infinity algebra of observables' which acts as a higher/homotopy analog of the Poisson algebra of functions on a symplectic manifold. In order to study Lie group actions on these manifolds, we introduce a theory of homotopy moment maps.
Callies, Martin   +3 more
openaire   +2 more sources

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