نتایج جستجو برای: bonded

تعداد نتایج: 18744  

2014
Michele Brun Gian Felice Giaccu Alexander B. Movchan Leonid I. Slepyan

1 Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Università di Cagliari, Cagliari, Italy 2 Department of Mathematical Sciences, University of Liverpool, Liverpool, UK 3 Dipartimento di Architettura, Design e Urbanistica, Facoltà di Architettura, Università di Sassari, Alghero, Italy 4 School of Mechanical Engineering, Tel Aviv University, Tel Aviv, Israel 5 Department of Mathema...

Journal: :European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 1997
S Bannan A Danby D Cowan S Ashraf M Gesinde P Martin

OBJECTIVE It is generally agreed that when the blood contact surfaces of a cardiopulmonary bypass circuit are treated with a layer of heparin molecules the activation of the humoral pathways is attenuated. However, there is still debate as to whether heparin-bonded circuits reduce thrombin generation. This study aims to examine the effects of immobilized heparin on cell activation and thrombin ...

Journal: :Brazilian dental journal 2011
Moara de Rossi Andiara de Rossi Jorge Abrão

Bonded maxillary expansion appliances have been suggested to control increases in the vertical dimension of the face after rapid maxillary expansion (RME). However, there is still no consensus in the literature about its real skeletal effects. The purpose of this prospective study was to evaluate, longitudinally, the vertical and sagittal cephalometric alterations after RME performed with bonde...

Journal: :The journal of physical chemistry. B 2010
Ellen H G Backus Robbert Bloem Paul M Donaldson Janne A Ihalainen Rolf Pfister Beatrice Paoli Amedeo Caflisch Peter Hamm

A series of photoswitchable, alpha-helical peptides were studied using two-dimensional infrared spectroscopy (2D-IR). Single-isotope labeling with (13)C(18)O at various positions in the sequence was employed to spectrally isolate particular backbone positions. We show that a single (13)C(18)O label can give rise to two bands along the diagonal of the 2D-IR spectrum, one of which is from an amid...

2016
Miroslav Müller

MÜLLER MIROSLAV. 2016. Experimental Research on Load Capacity, Treatment of Adhesively Bonded Surface and Failure Process of Structural T-joint. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(2): 473–479. In this paper the mechanical behaviour of structural two-component epoxy adhesives in T-joints is experimentally investigated. The aim of this study is to analyse t...

Journal: :The Angle orthodontist 2009
Joseph M Mullins Elizabeth C Kao Chris A Martin Erdogan Gunel Peter Ngan

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 required comprehensive orthodontic treatment were included in the study. A split mouth technique was used with one arch exposed to in-office whitening gel containing 38% hydrogen peroxide for 30 minu...

2014
Soghra Yassaei Abdolrahim Davari Mahjobeh Goldani Moghadam Ahmad Kamaei

OBJECTIVE The aim of this study was to compare the shear bond strength (SBS) of resin modified glass ionomer (RMGI) and composite resin for bonding metal and ceramic brackets. MATERIALS AND METHODS Eighty-eight human premolars extracted for orthodontic purposes were divided into 4 groups (n=22). In groups 1 and 2, 22 metal and ceramic brackets were bonded using composite resin (Transbond XT),...

Journal: :Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] 2014
Christopher A Barwacz Marcela Hernandez R Henry Husemann

UNLABELLED Resin-bonded, fixed partial dentures have the potential to offer a minimally invasive, fixed-prosthetic approach to tooth replacement in patients who may not be candidates for implant therapy. However, traditional preparation protocols often recommend extensive preparation designs on two abutment teeth, thereby potentially compromising the long-term health of the adjacent abutments a...

2016
P. G. Higgs

2014 Pairwise bonding between polymers in solution may lead to network formation e.g. double helical junction zones in biopolymer gels, or association between polyacids and polybases. The equilibrium length distribution of bonded sequences to be expected in a branched network structure is obtained here by modification of helix-coil transition theory for linear chains. In the limit of infinite c...

2009
Ling-Yung Wang Hsin-Yi Tsai Hong-Cheu Lin

Novel supramolecular side-chain banana-shaped liquid crystalline (LC) polymer complexes AmBn-N bearing various (m/n) molar ratios of hydrogenand covalent-bonded bent-core components were acquired by the free radical polymerization, where the hydrogen-bonded (H-bonded) structures were executed via mixing equimolar portions of proton donor (H-donor) polymers AmBn (homopolymers/ copolymers) and py...

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