Results 1 to 10 of about 267,117 (320)
Dynamical torsion and torsion potential [PDF]
arXiv, 1996 We introduce a generalized tetrad which plays the role of a potential for torsion and makes torsion dynamic. Starting from the Einstein-Cartan action with torsion, we get two field equations, the Einstein equation and the torsion field equation by using the metric tensor and the torsion potential as independent variables; in the former equation the ...
Xie, Hong-jun, Shirafuji, Takeshi
arxiv +3 more sources
A simple extension of FFT-based methods to strain gradient loadings - Application to the homogenization of beams and plates with linear and non-linear behaviors [PDF]
Journal of Theoretical, Computational and Applied Mechanics, 2022 Because of their simplicity, efficiency and ability for parallelism, FFT-based methods are very attractive in the context of numerical periodic homogenization, especially when compared to standard FE codes used in the same context. They allow applying to
Lionel Gélébart
doaj +1 more source
Splenogonadal Fusion Discovered by Testicular Torsion
Iranian Journal of Pediatric Surgery, 2020 Splenogonadal fusion, which is adherence of splenic tissue to gonads, is an uncommon congenital anomaly which mainly affects males. Herein, we report a case of splenogonadal fusion in a 20-month-old boy presenting with acute scrotal pain and inflammation.
Nahla Hmidi +9 more
doaj +1 more source
Optically Levitated Nanodumbbell Torsion Balance and GHz Nanomechanical Rotor. [PDF]
Physical Review Letters, 2018 Levitated optomechanics has great potential in precision measurements, thermodynamics, macroscopic quantum mechanics, and quantum sensing. Here we synthesize and optically levitate silica nanodumbbells in high vacuum.
Jonghoon Ahn +7 more
semanticscholar +1 more source
Torsion of the Gallbladder [PDF]
Journal of Gastrointestinal Surgery, 2012 A 77-year-old woman was seen with progressive abdominal pain.A CT scan was made and showed a large gallbladder extending into the right lower abdomen. Ultrasound was performed but demonstrated no gallstones. Laparoscopy showed a tordated, necrotic gallbladder that was attached to the liver only by the cystic artery and cystic duct.
Barbara L. van Leeuwen +4 more
openaire +2 more sources
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 One edge of an elastic rod is inserted into a friction-less and fitting socket head, whereas the other edge is subjected to a torque, generating a uniform twisting moment. It is theoretically shown and experimentally proved that, although perfectly smooth, the constraint realizes an expulsive axial force on the elastic rod, which amount is independent ...
Bigoni, Davide +3 more
openaire +4 more sources
Medicine, 2018 Rationale: Liposarcoma (LPS) is a rare malignant soft-tissue tumor. Management of LPS is relatively difficult, because there are no characteristic symptoms, or biomarkers, nor any established effective treatment.
Kentaro Matsuo +7 more
semanticscholar +1 more source
Torsion Elements and Torsionable Hypermodules
Mathematics, 2023 This article is motivated by the recently published studies on divisible hypermodules and falls in the area of hypercompositional algebra. In particular, it focuses on the torsion elements in Krasner hypermodules. First, we define the concept of a torsion element over a hypermodule, and based on it, we introduce a new class of hypermodules, namely the ...
openaire +3 more sources
Journal of High Energy Physics, 2007 Z_NxZ_M orbifold models admit the introduction of a discrete torsion phase. We find that models with discrete torsion have an alternative description in terms of torsionless models. More specifically, discrete torsion can be 'gauged away' by changing the shifts by lattice vectors.
Plöger, Felix +3 more
openaire +4 more sources
Improved side-chain torsion potentials for the Amber ff99SB protein force field
Proteins: Structure, Function, and Bioinformatics, 2010 Recent advances in hardware and software have enabled increasingly long molecular dynamics (MD) simulations of biomolecules, exposing certain limitations in the accuracy of the force fields used for such simulations and spurring efforts to refine these ...
K. Lindorff-Larsen +6 more
semanticscholar +1 more source