Results 111 to 120 of about 43,282 (314)

Comparative study of physical properties of zirconia based dental ceramics [PDF]

open access: yes, 2009
The aim of this project was to evaluate and compare the mechanical properties of commercial yttria partially stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics, which have generated interest in restorative dentistry because of their high ...
Pittayachawan, P, Pittayachawan, P.
core  

In Situ Crystalline‐Amorphous Composite Oxide Structure Suppressing Thermal Wear Instability for Refractory Multi‐Principal Element Alloy

open access: yesAdvanced Functional Materials, EarlyView.
An effective strategy is developed to overcome the medium temperatures wear resistance degradation in refractory multi‐principal element alloys. By utilizing chemical short‐range ordering to trigger oxygen‐induced amorphization, a composite oxide structure is formed, which combines high hardness with robust stiffness.
Xuhui Pei   +7 more
wiley   +1 more source

Interlayer Bond Strength of 3D Printed Concrete Members with Ultra High Performance Concrete (UHPC) Mix

open access: yesBuildings
In structures manufactured using 3D concrete printing, cracks can easily propagate along the interface between printed layers. Therefore, it was necessary to determine the interlayer bond strength.
Yoon Jung Lee   +5 more
doaj   +1 more source

Nanoengineered Binetworks in Multifunctional Anionic Block Polymer Mesoblends for Improved Mechanical Properties

open access: yesAdvanced Functional Materials, EarlyView.
Mesoblends consist of a nanostructured polymer into which a second polymer is imbibed with a selective solvent. In this work, a solvent‐templatable pentablock terpolymer possessing a sulfonated midblock is modified with a hydrophilic polymer that is photocrosslinked in situ, yielding a hierarchical binetwork.
Kacie M. Wells   +3 more
wiley   +1 more source

Effect of Silver Diamine Fluoride and Potassium Iodide Application on the Microhardness and Shear Bond Strength of Resin Composite to Enamel and Dentin - An In vitro Study

open access: yesIndian Journal of Dental Research
Aim: To evaluate the effect of the application of silver diamine fluoride–potassium iodide on the microhardness and shear bond strength of composite resin complex to enamel and dentin. Material and Method: Extracted premolars were processed and sectioned
Surabhi Bhardwaj   +5 more
doaj   +1 more source

Is a primer needed for orthodontic bonding? A randomised controlled trial [PDF]

open access: yes, 2012
Is a primer needed for orthodontic bonding? A Randomised controlled trial Objective: To evaluate the clinical performance of APC Victory IITM (3M Unitek) brackets in direct orthodontic bonding with and without the use of primer.
Nandhra, Sarabijit Singh
core  

Bond tilting and sliding friction in a model of cell adhesion

open access: yes, 2007
As a simple theoretical model of a cell adhering to a biological interface, we consider a rigid cylinder moving in a viscous shear flow near a wall. Adhesion forces arise through intermolecular bonds between receptors on the cell and their ligands on the
Jensen, O. E.; id_orcid   +4 more
core   +1 more source

Bioinspired Mechanically Robust Organic–Inorganic Hybridized Bio‐Adhesives With up to 50% Inorganic Components by Bi‐Continuous Phase Engineering

open access: yesAdvanced Functional Materials, EarlyView.
A robust plant protein adhesive was prepared by fabricating a bi‐continuous organic–inorganic hybrid structure. Compared with traditional organic–inorganic hybrid adhesives, the addition amount of inorganic phase is increased from 0.2%–3.0% to 50%, and the strength and toughness are increased by 6 and 121 times, respectively.
Zheng Liu   +10 more
wiley   +1 more source

Shear bond strength test using different loading conditions a finite element analysis

open access: yes
is study evaluated the stress distribution at the bond interface during shear bond strength testing for three loading conditions. Methods: A three-dimensional model was created of a specimen for evaluation by the shear bond strength test, using three ...
Rodivan Braz, Mário Alexandre Coelho Sinhoreti2, Aloísio Oro Spazzin, Sandro Cordeiro Loretto, Arine Maria Viveros de Castro Lyra, Agenor Dias de Meira-Júnior
core  

Influence of substrate moisture preparation on concrete overlay bond strength

open access: yes, 2014
Includes bibliographical references.A considerable amount of progress has been made over the years in understanding the fundamentals of concrete composition and performance in both safe and harsh environments.
Talotti, Marco
core  

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