Results 31 to 40 of about 279,237 (307)

A single-domain spectral method for black hole puncture data

open access: yes, 2004
We calculate puncture initial data corresponding to both single and binary black hole solutions of the constraint equations by means of a pseudo-spectral method applied in a single spatial domain.
Bernd Brügmann   +6 more
core   +1 more source

Constraint violation in free evolution schemes: comparing BSSNOK with a conformal decomposition of Z4

open access: yes, 2010
We compare numerical evolutions performed with the BSSNOK formulation and a conformal decomposition of a Z4-like formulation of General Relativity.
David Hilditch   +4 more
core   +1 more source

Constraint preserving boundary conditions for the Z4c formulation of general relativity [PDF]

open access: yes, 2011
We discuss high order absorbing constraint preserving boundary conditions for the Z4c formulation of general relativity coupled to the moving puncture family of gauges. We are primarily concerned with the constraint preservation and absorption properties
B. Gustafsson   +6 more
core   +3 more sources

Incidence and associated factors of postdural puncture headache for parturients who underwent cesarean section with spinal anesthesia at Debre Tabor General Hospital, Ethiopia; 2019

open access: yesSAGE Open Medicine, 2021
Introduction and Objective: Postdural puncture headache is one of the most frequent late complications of spinal anesthesia. There are different factors that might predispose for postdural puncture headache.
Basazinew Chekol Demilew   +5 more
doaj   +1 more source

Bowen-York trumpet data and black-hole simulations [PDF]

open access: yes, 2009
The most popular method to construct initial data for black-hole-binary simulations is the puncture method, in which compactified wormholes are given linear and angular momentum via the Bowen-York extrinsic curvature.
J. P. Boyd   +5 more
core   +2 more sources

hp-adaptive discontinuous Galerkin solver for elliptic equations in numerical relativity

open access: yes, 2019
A considerable amount of attention has been given to discontinuous Galerkin methods for hyperbolic problems in numerical relativity, showing potential advantages of the methods in dealing with hydrodynamical shocks and other discontinuities.
Fischer, N., Pfeiffer, H., Vincent, T.
core   +2 more sources

Determination of physical characteristics of root vegetables with puncture test [PDF]

open access: yesJournal on Processing and Energy in Agriculture, 2011
The aim of this research was to analyze the physical characteristics of root vegetables: carrot, parsley, parsnip and celery. These root vegetables are sold fresh on the market which is why it is important to specify its shape, structure and root texture.
Bajkin Anđelko   +4 more
doaj  

Application of improved 3D digital guide plate-assisted guided puncture in microballoon compression for primary trigeminal neuralgia

open access: yes口腔疾病防治, 2023
Objective To investigate the clinical efficacy and application value of an improved 3D-printed guide plate for the treatment of primary trigeminal neuralgia (PTN) by percutaneous microballoon compression (PMC).
YANG Yinghui   +6 more
doaj   +1 more source

Selection Models for the Internal Quality of Fruit, based on Time Domain Laser Reflectance Spectroscopy [PDF]

open access: yes, 2004
Time domain laser reflectance spectroscopy (TRS) was applied for the first time to evaluate internal fruit quality. This technique, known in medicine-related knowledge areas, has not been used before in agricultural or food research.
Cubeddu, Rinaldo   +8 more
core   +3 more sources

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