Results 1 to 10 of about 512,547 (364)
Linear odd Poisson bracket on Grassmann variables [PDF]
, 1999 A linear odd Poisson bracket (antibracket) realized solely in terms of Grassmann variables is suggested. It is revealed that the bracket, which corresponds to a semi-simple Lie group, has at once three Grassmann-odd nilpotent $\Delta$-like differential ...
Vyacheslav Soroka
openalex +7 more sources
Finite element study on modification of bracket base and its effects on bond strength
Dental Press Journal of Orthodontics, 2015 OBJECTIVE: This article aims to analyze the difference in stresses generated in the bracket-cement-tooth system by means of a peel load in single and double-mesh bracket bases using a three-dimensional finite element computer model. MATERIAL AND METHODS:
Tarulatha R. Shyagali +3 more
doaj +2 more sources
Journal of Pharmacy and Bioallied Sciences, 2014 Background and Objectives: The purpose of this study is to evaluate the frictional resistance generated by conventional stainless steel, radiance ceramic bracket, self-ligating and composite brackets using a 0.019 × 0.025 stainless steel straight length ...
Ajith R Pillai +3 more
doaj +2 more sources
Extended corner symmetry, charge bracket and Einstein’s equations [PDF]
Journal of High Energy Physics, 2021 We develop the covariant phase space formalism allowing for non-vanishing flux, anomalies, and field dependence in the vector field generators. We construct a charge bracket that generalizes the one introduced by Barnich and Troessaert and includes ...
L. Freidel +3 more
semanticscholar +1 more source
Barnich–Troessaert bracket as a Dirac bracket on the covariant phase space [PDF]
Classical and quantum gravity, 2021 The Barnich–Troessaert bracket is a proposal for a modified Poisson bracket on the covariant phase space for general relativity. The new bracket allows us to compute charges, which are otherwise not integrable. Yet there is a catch.
W. Wieland
semanticscholar +1 more source
A Lie Bracket for the Momentum Kernel [PDF]
Communications in Mathematical Physics, 2020 We prove results for the study of the double copy and tree-level colour/kinematics duality for tree-level scattering amplitudes using the properties of Lie polynomials.
Hadleigh Frost +2 more
semanticscholar +1 more source
Bracket Failure in Orthodontic Patients: The Incidence and the Influence of Different Factors
BioMed Research International, 2022 Failure of brackets is a common problem in orthodontics. This affects the treatment time, cost, and compliance of the patient. This study was conducted to estimate the bracket failure rate and the related factors for the long term. Methodology.
Haris Khan +4 more
semanticscholar +1 more source
Materials, 2021 The accurate expression of bracket prescription is important for successful orthodontic treatment. The aim of this study was to evaluate the accuracy of digital scan images of brackets produced by four intraoral scanners (IOSs) when scanning the surface ...
S. Shin +4 more
semanticscholar +1 more source
Applied Sciences, 2023 This study aimed to evaluate the failure rates and relevant factors of bonded orthodontic brackets with a computer-aided design and manufacturing (CAD/CAM)-based 3D-printed indirect bonding jig system (IDBS) using 2531 natural teeth selected from 99 ...
Jin Bai, Hye-Jin Lee, Seong-Hun Kim
doaj +1 more source
Effect of Remineralizing Agents on Shear Bond Strength of Orthodontic Brackets—In Vitro Study
Children, 2023 Orthodontic treatment can be effective only with the proper adhesion strength of the bonded elements on the teeth. The aim of the study was to analyze the influence of different remineralization products on the brackets (Evolve Low Profile Brackets 0.022
Alexandrina Muntean +4 more
doaj +1 more source