Results 121 to 130 of about 3,696,340 (368)

Influence of Light Curing Time on the Bond Strength of Orthodontic Brackets Using Different Light Curing Units – An In vitro Study

Journal of Pharmacy and Bioallied Sciences
Background: The bond strength of orthodontic brackets is crucial for successful orthodontic treatment. Light curing units (LCUs) play a significant role in this process, with varying light curing times potentially impacting bond strength.
Anand A. Tripathi, Shalabh Baxi, Manika Singhal, Anurag Tiwari, P. Narayana Prasad, Hiroj Bagde   +5 more
doaj   +1 more source

RESONATING SEMIPOLAR SINGLE BOND. PART VIII. HYPERCONJUGA TION, STRENGTH OF ACIDS AND CALCULATION OF DIPOLE MOMENTS [PDF]

, 1953
SAIYID SHAMIM AHMAD, M. A. WAJID
openalex   +1 more source

Why is the strength of a polymer network so low? [PDF]

arXiv
Experiments have long shown that a polymer network of covalent bonds commonly ruptures at a stress that is orders of magnitude lower than the strength of the covalent bonds. Here we investigate this large reduction in strength by coarse-grained molecular dynamics simulations.
arxiv  

Elucidating the Supramolecular Interaction of Positively Supercharged Fluorescent Protein with Anionic Phthalocyanines

Advanced Biology, EarlyView.
Positively supercharged mGreenLatern protein is self‐assembled electrostatically with negatively charged zinc phthalocyanines to yield bio‐based photoactive materials in aqueous media. The addition of phthalocyanines results in the formation of large complexes fully quenching of the protein fluorescence. The results indicate an energy transfer from the
Sharon Saarinen, Ramsha Khan, Marta Patrian, Juan Pablo Fuenzalida‐Werner, Rubén D. Costa, Petr Zimcik, Veronika Novakova, Tero‐Petri Ruoko, Nikolai V. Tkachenko, Eduardo Anaya‐Plaza, Mauri A. Kostiainen   +10 more
wiley   +1 more source

Shear Bond Strength of Nanocomposites to Dentin Substrate Treated with Er:YAG Laser Followed by Two Different Bonding Systems

Journal of Islamic Dental Association of Iran, 2017
Background and Aim: Preparation of tooth structure by laser systems produces a surface with different characteristics. Therefore, selecting an appropriate bonding system is necessary to achieve the maximum bond strength.
Mansoureh Mirzaee, Paniz Fasih, Esmail Yasini, Nasim Chiniforush, Mohammad Javad Kharazifard, Shiva Rafiezadeh, Ladan Ranjbar Omrani   +6 more
doaj  

Investigation of the shear bond strength to dentin of universal adhesives applied with two different techniques

Acta Odontologica Turcica, 2017
Objective: The aim of this study was to evaluate the shear bond strength of universal adhesives applied with self-etch and etch&rinse techniques to dentin.
Elif Yaşa, Duygu Yıldızeli, Zübeyir Sayıner, Ali Erdem   +3 more
doaj   +1 more source

Two Distinct Modes of Hydrogen-Bonding Interaction in the Prototypic Hybrid Halide Perovskite, Tetragonal CH3NH3PbI3 [PDF]

arXiv, 2015
In spite of the key role of hydrogen bonding in the structural stabilization of the prototypic hybrid halide perovskite, CH3NH3PbI3 (MAPbI3), little progress has been made in our in-depth understanding of the hydrogen-bonding interaction between the MA+-ion and the iodide ions in the PbI6-octahedron network.
arxiv  

Coacervates Composed of Low‐Molecular‐Weight Compounds– Molecular Design, Stimuli Responsiveness, Confined Reaction

Advanced Biology, EarlyView.
Coacervation driven by liquid‐liquid phase separation (LLPS) of biopolymers has garnered increasing attention in biology since this leads to the formation of membraneless organelles capable of performing essential yet largely unknown functions. This review highlights recent advances in coacervates (artificial condensates) composed of low‐molecular ...
Sayuri L. Higashi, Masato Ikeda
wiley   +1 more source

Quantifying hydrogen bonding using electrically tunable nanoconfined water [PDF]

arXiv
Hydrogen bonding plays a crucial role in biology and technology, yet it remains poorly understood and quantified despite its fundamental importance. Traditional models, which describe hydrogen bonds as electrostatic interactions between electropositive hydrogen and electronegative acceptors, fail to quantitatively capture bond strength, directionality,
arxiv  

Nature and strength of group-14 A–A′ bonds [PDF]

Chemical Science
Quantum-chemical analyses reveal: Si–Si bonds are longer, weaker, and react oppositely to introducing bulkier substituents than C–C bonds.
Daniela Rodrigues Silva, Eva Blokker, J. Martijn van der Schuur, Trevor A. Hamlin, F. Matthias Bickelhaupt   +4 more
openaire   +3 more sources