搜索结果: 1-15 共查到“Bracket”相关记录47条 . 查询时间(0.046 秒)
Torture, Culture, War Zone Exposure and Posttraumatic Stress Disorder: Criterion A's Bracket Creep
Criterion-A acute PTSD war DSM-V tonic immobility
2015/7/29
THIS IS A COMMENTARY/LETTER TO THE EDITOR, THUS THERE IS NO ABSTRACT.
The resolution of the bracket powers of the maximal ideal in a diagonal hypersurface ring
Almost Complete Intersection Enumeration of Plane Partitions
2011/1/18
Let k be a field. For each pair of positive integers (n,N), we resolve Q = R/(xN, yN, zN) as a module over the ring R = k[x, y, z]/(xn +yn + zn). Write N in the form N = an + r for integers a and r.
Gauge fixing in (2+1)-gravity: Dirac bracket and spacetime geometry
Gauge fixing (2+1)-gravity: Dirac bracket spacetime geometry
2011/3/2
We consider (2+1)-gravity with vanishing cosmological constant as a constrained dynamical system. By applying Dirac’s gauge fixing procedure, we implement the constraints and determine the Dirac brack...
Difference equations and cluster algebras I: Poisson bracket for integrable difference equations
Difference equations cluster algebras Poisson bracket for integrable difference equations
2011/2/28
We introduce the cluster algebraic formulation of the integrable difference equations, the discrete Lotka-Volterra equation and the discrete Li-ouville equation, from the view point of the general T-s...
Generalized Dirac bracket and the role of the Poincaré symmetry in the program of canonical quantization of fields 2
Generalized Dirac bracket the Poincaré symmetry
2010/12/27
In this article the methods of canonical analysis and quantization that were reviewed in the first part of the series are applied to the case of the Dirac field in the presence of electromagnetic int...
Generalized Dirac bracket and the role of the Poincaré symmetry in the program of canonical quantization of fields 2
Generalized Dirac bracket the Poincaré symmetry canonical quantization
2010/11/19
In this article the methods of canonical analysis and quantization that were reviewed in the first part of the series are applied to the case of the Dirac field in the presence of electromagnetic inte...
Generalized Dirac bracket and the role of the Poincaré symmetry in the program of canonical quantization of fields 1
Generalized Dirac bracket Poincaré symmetry program of canonical quantization
2010/11/11
An elementary presentation of the methods for the canonical quantization of constraint systems with Fermi variables is given. The emphasis is on the subtleties of the construction of an appropriate cl...
A polynomial bracket for the Dubrovin--Zhang hierarchies
polynomial bracket Dubrovin--Zhang hierarchies
2010/12/14
We define a hierarchy of Hamiltonian PDEs associ-ated to an arbitrary tau-function in the semi-simple orbit of the Givental group action on genus expansions of Frobenius manifolds.We prove that the eq...
Microbial Adhesion on Different Bracket Types in vitro
Orthodontic bracket Orthodontic appliance design Microbiology, Dental plaque
2010/3/5
Objective: To test the hypothesis that there are differences in total bacterial counts and capacity for biofilm formation between seven different bracket types.
Material and Methods: By means of an...
Shear Bond Strength and FEM of a Resin-modified Glass Ionomer Cement—Effects of Tooth Enamel Shape and Orthodontic Bracket Base Configuration
Resin-modified glass ionomer cement Bond strength FEM
2009/9/14
The objective of this study was to evaluate the influences of enamel shape and bracket base configuration on shear bond strength from a biomechanical point of view. To this end, shear bond test and st...
Influence of environmental conditions on orthodontic bracket bonding of self-etching systems
Bracket bonding Oral condition Bond strength
2009/9/11
The influence of temperature and relative humidity (RH) on the bond strength of orthodontic adhesives was investigated. Two self-etching/composite type, one acid-etching/composite type, and one acid-e...
Tooth Whitening Effects on Bracket Bond Strength In Vivo
Bleaching Bond strength Bracket survival rate
2010/3/5
Objective: To test the hypothesis that there is no difference between the bracket survival rate of brackets bonded to bleached and unbleached teeth.
Materials and Methods: Thirty-eight patients who...
Changes in Incisor Third-Order Inclination Resulting from Vertical Variation in Lingual Bracket Placement
Lingual orthodontics Third-order inclination Lingual incisor morphology Lingual bracket placement
2010/3/5
Objective: To test the null hypothesis that third-order measurements are not correlated to lingual incisor features seen on radiographs.
Material and Methods: The lateral headfilms of 38 untreated,...
Use of Palatal Miniscrew Anchorage and Lingual Multi-Bracket Appliances to Enhance Efficiency of Molar Scissors-Bite Correction
Scissors-bite Miniscrew Lingual multi-bracket appliances Bite-plane
2010/3/5
This article reports the successful treatment method of scissors-bite correction using miniscrew anchorage and a lingual multi-bracket appliance. A female patient, 17 years and 4 months old, had a chi...
Third-Order Torque and Self-Ligating Orthodontic Bracket–Type Effects on Sliding Friction
Self-ligation Torque Friction
2010/3/5
Objective: To examine the influence of third-order torque on kinetic friction in sliding mechanics involving active and passive self-ligating brackets.
Materials and Methods: Wire-slot frictional f...