Results 21 to 30 of about 159,414 (315)
The Moments of the Hydrogen Atom by the Method of Brackets [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2017 Expectation values of powers of the radial coordinate in arbitrary hydrogen states are given, in the quantum case, by an integral involving the associated Laguerre function. The method of brackets is used to evaluate the integral in closed-form and to produce an expression for this average value as a finite sum.
Gonzalez, Ivan +4 more
openaire +3 more sources
The method of brackets. Part 2: examples and applications [PDF]
, 2010 A new heuristic method for the evaluation of definite integrals is presented. This method of brackets has its origin in methods developed for the evaluation of Feynman diagrams.
I. González, V. Moll, A. Straub
semanticscholar +1 more source
Bond Strength of Metal and Ceramic Brackets on Resin Nanoceramic Material With Different Surface Treatments [PDF]
, 2020 Objective:This study aimed to evaluate the effects of different surface conditoning methods on surface texture and shear bond strength (SBS) of brackets bonded to resin nanoceramic material.Methods:Ceramic specimens were divided into two groups as metal ...
Özgür Demir +5 more
core +1 more source
SBS vs Inhouse Recycling Methods-An Invitro Evaluation [PDF]
Journal of Clinical and Diagnostic Research, 2015 Introduction: In today’s world of economic crisis it is not feasible for an orthodontist to replace each and every debonded bracket with a new bracket- quest for an alternative thrives Orthodontist.
Supradeep Kumar Kamisetty +5 more
doaj +1 more source
MethodsX, 2020 The determination of the orthodontic brackets’ adaptation to the curvatures of teeth is a difficult topic to study. The complexity arise due to the different designs of their fitting surfaces, margins and curvatures of orthodontic brackets.
Yaseen Fakir, BChD, MSc +2 more
doaj +1 more source
Microhardness and Chemical Composition of Different Metallic Brackets: An In Vitro Study
Dentistry Journal, 2023 The purpose of the study is to compare the hardness of different metallic brackets to enamel and to determine their chemical composition and microstructure.
Marine Colmant +4 more
doaj +1 more source
A mask R-CNN based method for inspecting cable brackets in aircraft
, 2020 In the aviation industry, cable bracket is one of the most common parts. The traditional assembly state inspection method of cable bracket is to manually compare by viewing 3D models. The purpose of this paper is to address the problem of inefficiency of
Gang Zhao +3 more
semanticscholar +1 more source
European Journal of Orthodontics, 2020 INTRODUCTION The primary aim of this randomized controlled trial was to compare the time for bracket bonding using either direct or computer-aided indirect bonding; a secondary aim was to assess immediate bracket debondings and cost minimization ...
Izabela Czolgosz +2 more
semanticscholar +1 more source
A Clinical Comparison of Failure Rates of Metallic and Ceramic Brackets: A Twelve-Month Study
BioMed Research International, 2020 Objective Clinical comparison of the survival rates between stainless steel and ceramic brackets over a 12-month period. Materials and Methods The study involved 20 consecutive patients with diagnosed malocclusion that required two-arch fixed appliance ...
T. Ogiński +3 more
semanticscholar +1 more source