Results 31 to 40 of about 159,545 (358)
Evaluation of the Effects of Different Mouthrinses on the Color Stability of One Type of Glass Ionomer, Compomer and Giomer [PDF]
Journal of Dental Materials and Techniques, 2016 Objectives: The aim of this study was to evaluate the effect of four commercially available mouthrinses on the color stability of one type of glass ionomer, giomer and compomer. Method: 60 disc-shaped specimens, 180 in total (7*2mm), fabricated from each
Shaghayegh Razavi +3 more
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Nanomaterials, 2022 Carbon films were fabricated on the orthodontic stainless steel archwires by using a custom-designed electron cyclotron resonance (ECR) plasma sputtering deposition system under electron irradiation with the variation of substrate bias voltages from +5 V
Pengfei Wang +4 more
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Biquandle brackets and knotoids [PDF]
Journal of Knot Theory and Its Ramifications, 2021 Biquandle brackets are a type of quantum enhancement of the biquandle counting invariant for oriented knots and links, defined by a set of skein relations with coefficients which are functions of biquandle colors at a crossing. In this paper, we use biquandle brackets to enhance the biquandle counting matrix invariant defined by the first two authors ...
Sam Nelson +2 more
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A new perspective on nonholonomic brackets and Hamilton-Jacobi theory [PDF]
J. Geom. Phys. 198, 105116, (Mar. 2024), 2023 The nonholonomic dynamics can be described by the so-called nonholonomic bracket on the constrained submanifold, which is a non-integrable modification of the Poisson bracket of the ambient space, in this case, of the canonical bracket on the cotangent bundle of the configuration manifold.
arxiv +1 more source
Journal of Dentistry Indonesia, 2015 The incidence of loose brackets during orthodontic treatment has reached 5%; therefore, loose brackts should be rebonded. Rebonding without etching might decrease chair time without compromising bond strength.
Nada Ismah, Erwin Siregar, Faruk Hoesin
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Curved and Layered Structures, 2023 An electric motor mounting bracket is used in electric vehicles, especially hybrid ones using a parallel hybrid configuration. This study aims to analyze the strength and performance of the initial design and topology optimized design.
Effendi Ma’ruf Yanuar +3 more
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Algebraic string bracket as a Poisson bracket
Journal of Noncommutative Geometry, 2010 In this paper we construct a Lie algebra representation of the algebraic string bracket on negative cyclic cohomology of an associative algebra with appropriate duality. This is a generalized algebraic version of the main theorem of [AZ] which extends Goldman’s results using string topology operations.The main result can be applied to the de Rham ...
Abbaspour, Hossein +2 more
openaire +7 more sources
Dualities between Poisson brackets and antibrackets [PDF]
Int.J.Mod.Phys. A14 (1999) 5049-5074, 1998 Recently it has been shown that antibrackets may be expressed in terms of Poisson brackets and vice versa for commuting functions in the original bracket. Here we also introduce generalized brackets involving higher antibrackets or higher Poisson brackets where the latter are of a new type.
arxiv +1 more source
In-Vitro Evaluation of Friction al Forces in Different Bracket and Arch wires Combinations
Turkish Journal of Orthodontics, 2011 Aim:This investigation aimed to evaluate the frictional forces produced by five different orthodontic brackets when used in combination with stainless steel and beta titanium archwires.Materials and Methods:In this study, four types of esthetic ...
Berna Yüzbaş, Tülin Arun
doaj +1 more source
Turkish Journal of Orthodontics, 2010 Aim:The aim of this study was to evaluate the ability to coat the orthodontic brackets with TiO2 by the way of sol-gel dip-coating method for providing a reduction in pathogenic oral microflora during the treatment period with UV-applications.Materials ...
Hakan Bulut, Erdal Işıksal
doaj +1 more source