Results 41 to 50 of about 4,642,550 (404)

Conductance of a single molecule anchored by an isocyanide substituent to gold electrodes [PDF]

open access: yes, 2006
The effect of anchoring group on the electrical conductance of a single molecule bridging two Au electrodes was studied using di-substituted (isocyanide (CN-), thiol (S-) or cyanide (NC-)) benzene.
Cunningham I. D.   +5 more
core   +2 more sources

On the Hydrogen Bond Strength and Vibrational Spectroscopy of Liquid Water

open access: yesScientific Reports, 2018
In the present work, we introduce two new metrics i.e. hydrogen-bond strength and charge-transfer between the donor/acceptor water molecules as a measure of hydrogen-bond rearrangement dynamics. Further, we also employ a simple model based on energy flux
D. Ojha, K. Karhan, T. Kühne
semanticscholar   +1 more source

Bond Strength of GFRP Bars Embedded in Engineered Cementitious Composite using RILEM Beam Testing

open access: yesInternational Journal of Concrete Structures and Materials, 2018
This paper presents a study on the bond characteristics of glass fiber reinforced polymer (GFRP) bars in engineered cementitious composite (ECC). Ninety beam specimens having variable parameters namely bar diameter, GFRP bar types (standard low modulus ...
Khandaker Muhammed Anwar Hossain
doaj   +1 more source

Effect of TiO2 nanoparticles incorporation on antibacterial properties and shear bond strength of dental composite used in Orthodontics

open access: yesDental Press Journal of Orthodontics, 2017
Introduction: Plaque accumulation and bond failure are drawbacks of orthodontic treatment, which requires composite for bonding of brackets. As the antimicrobial properties of TiO2 nanoparticles (NPs) have been proven, the aim of this study was to ...
A. Sodagar   +6 more
semanticscholar   +1 more source

Analytical carbon-oxygen reactive potential [PDF]

open access: yes, 2008
We present a reactive empirical potential with environment-dependent bond strengths for the carbon-oxygen (CO) system. The distinct feature of the potential is the use of three adjustable parameters characterizing the bond: the strength, length, and ...
Giapis, K. P., Kutana, A.
core   +1 more source

Nature and strength of chalcogen–π bonds [PDF]

open access: yesPhysical Chemistry Chemical Physics, 2018
We have analyzed the chalcogen–π bonding mechanism in a systematic series of model systems through Kohn–Sham molecular orbital theory and a quantitative energy decomposition scheme.
Marco Bortoli   +4 more
openaire   +5 more sources

The effect of silver nanoparticles on composite shear bond strength to dentin with different adhesion protocols

open access: yesJournal of Applied Oral Science, 2017
In Dentistry, restorative materials and oral bacteria are believed to be responsible for restoration failure. To make long-lasting restorations, antibacterial agents should be made.
Koohpeima Fatemeh   +2 more
semanticscholar   +1 more source

Hydrogen Bond Strength Modulates the Mechanical Strength of Ferric-Thiolate Bonds in Rubredoxin [PDF]

open access: yesJournal of the American Chemical Society, 2012
It has long been recognized that hydrogen bonds formed by protein backbone amides with cysteinyl S(γ) atoms play important roles in modulating the functional and structural properties of the iron-sulfur centers in proteins. Here we use single molecule atomic force microscopy, cyclic voltammetry, and protein engineering techniques to investigate ...
Zheng, Peng   +3 more
openaire   +2 more sources

Shear bond strength of composite resin to high performance polymer PEKK according to surface treatments and bonding materials

open access: yesThe Journal of Advanced Prosthodontics, 2017
PURPOSE The object of the present study was to evaluate the shear bonding strength of composite to PEKK by applying several methods of surface treatment associated with various bonding materials. MATERIALS AND METHODS One hundred and fifty PEKK specimens
Ki-Sun Lee   +4 more
semanticscholar   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

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