Results 71 to 80 of about 619,697 (330)

Assessment of the hardness of different orthodontic wires and brackets produced by metal injection molding and conventional methods

Dental Research Journal, 2017
Background: This study was conducted to assess the hardness of orthodontic brackets produced by metal injection molding (MIM) and conventional methods and different orthodontic wires (stainless steel, nickel-titanium [Ni-Ti], and beta-titanium alloys ...
Shiva Alavi, Marzie Kachuie
doaj   +1 more source

Symmetry transform in the Faddeev-Jackiw quantization of dual models

, 1999
We study the presence of symmetry transformations in the Faddeev-Jackiw approach for constrained systems. Our analysis is based in the case of a particle submitted to a particular potential which depends on an arbitrary function.
A. M. Polyakov, C. Montonen, C. P. Natividade, C. Wotzasek, D. Sorokin, G. Knizhnik, G. V. Dunne, H. Montani, H. O. Girotti, H. O. Girotti, I. Martin, J. Barcelos-Neto, J. Barcelos-Neto, J. Barcelos-Neto, J. H. Schwarz, J. Schonfeld, L. D. Faddeev, M. Henneaux, N. Seiberg, N. Seiberg, N. Seiberg, N. Seiberg, P. A. M. Dirac, P. Goddard, P. Pasti, R. Jackiw, R. L. P. G. Amaral, S. Deser, S. Deser, S. Deser, T. Matsuyama   +30 more
core   +1 more source

Whitham's Method and Dubrovin-Novikov Bracket in Single-Phase and Multiphase Cases [PDF]

, 2012
In this paper we examine in detail the procedure of averaging of the local field-theoretic Poisson brackets proposed by B.A. Dubrovin and S.P. Novikov for the method of Whitham.
Maltsev, Andrei Ya.
core   +5 more sources

Accurate Bracket Placement with an Indirect Bonding Method Using Digitally Designed Transfer Models Printed in Different Orientations—An In Vitro Study [PDF]

, 2021
Julia Süpple, Julius von Glasenapp, Eva Hofmann, Paul‐Georg Jost‐Brinkmann, Petra Julia Koch   +4 more
openalex   +1 more source

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

Advanced Functional Materials, EarlyView.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández, Álex Farrando Pérez, Fernando Gordillo Gámez, Pedro G. Boj, José M. Villalvilla, José A. Quintana, Yanpei Wan, Daniel Aranda, José Manuel Marín‐Beloqui, Jishan Wu, Zebing Zeng, María A. Díaz‐García, Juan Casado   +12 more
wiley   +1 more source

An In Vitro Study to Compare the Shear Bond Strength of Metal and Ceramic Brackets Using Conventional Acid Etch and Self-Etch Primer

Journal of Pharmacy and Bioallied Sciences
AimIn this, in vitro study’s objective is to assess the shear bond strength (SBS) of metal and ceramic orthodontic brackets that have been adhered to enamel using a conventional acid etch/primer and self-etching primer (SEP) adhesive method.
Barthunia Neeral, Jain Ruchira, Selvaraj Mahesh Kumar, Arvindyogeshwar R, Chandran Aishwarya   +4 more
doaj   +1 more source

Classical R-Matrices and the Feigin-Odesskii Algebra via Hamiltonian and Poisson Reductions

, 2003
We present a formula for a classical $r$-matrix of an integrable system obtained by Hamiltonian reduction of some free field theories using pure gauge symmetries.
A V Zotov, Arutyunov G E, Atiyah M F, Avan J, Belavin A A, Ben-Israel A, Braden H W, Braden H W, Braden H W, Broadbridge P, Caradus S R, de Leeuw S W, Dolgushev V A, Duffin R J, Enriquez B, Enriquez B, Etingof P, Etingof P, Fehér L, Feigin B L, Feigin B L, Feigin B L, H W Braden, Henneaux M, Hitchin N, Krichever I M, Krichever I M, Krichever I M, Krichever I M, Krichever I M, M A Olshanetsky, Nekrasov N, Olshanetsky M A, Olshanetsky M A, Polishchuk A, Pringle R M, Radhakrishna Rao C, Semenov-Tian-Shansky M A, Sheinman O K, Sheinman O K, Sheinman O K, Sheinman O K, Sklyanin E K, Sklyanin E K, Talalaev D V, Tevelev E, Tyurin A N, Udwadia F E, V A Dolgushev   +48 more
core   +1 more source

Comparative evaluation of three methods of adhesive remnant removal after orthodontic bracket debonding [PDF]

, 2022
Soghra Yassaei, Neda Joshan, Shiva ABDOLAHY, Azadeh Hakimi Rokn ABADI   +3 more
openalex   +1 more source

Phase‐Stable Palladium Hydride Derived from PdCoO2 for Sustainable Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
The exceptionally active β‐PdHx is demonstrated for the hydrogen evolution reaction in acidic media. The fast activation kinetics from the PdCoO2 template are resolved by operando spectroscopy, and isotope‐labeled atom probe tomography quantifies the H content in β‐PdHx. The outstanding stability of the electrocatalyst is attributed to the retention of
Luca Camuti, Se‐Ho Kim, Filip Podjaski, Miquel Vega‐Paredes, Andrea M. Mingers, Tolga Acartürk, Ulrich Starke, Bettina V. Lotsch, Christina Scheu, Baptiste Gault, Siyuan Zhang   +10 more
wiley   +1 more source

Three-algebra for supermembrane and two-algebra for superstring

, 2009
While string or Yang-Mills theories are based on Lie algebra or two-algebra structure, recent studies indicate that M-theory may require a one higher, three-algebra structure. Here we construct a covariant action for a supermembrane in eleven dimensions,
C. Krishnan, G. Papadopoulos, I. Jeon, I. Jeon, I.A. Bandos, I.A. Bandos, J. Bagger, J. Gomis, J. Polchinski, J.-H. Park, J.P. Gauntlett, Jeong-Hyuck Park, K. Furuuchi, K. Lee, Kanghoon Lee, M. Axenides, M. Axenides, M. Henneaux, M. Sato, M.A. Ganjali, M.A. Ganjali, M.A. Santos, P. Franche, P.-M. Ho, P.-M. Ho, P.S. Howe, R.C. Myers, V.T. Filippov, Y. Nambu   +28 more
core   +2 more sources