EXPERIMENTAL AND THEORETICAL STUDIES OF BINDING INTERACTIONSIN DIVALENT TRANSITION METAL CATION-N-DONOR LIGANDCOMPLEXES: STRUCTURES, SEQUENTIAL BOND DISSOCIATION ENERGIES,MECHANISMS AND ENERGETICS OF COLLISION-INDUCED DISSOCIATION

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. The aim of this study was to compare the bond strength of Adper Single Bond 2 adhesive and Single Bond Univer-sal to dentin prepared by bur or laser. Materials and Methods: ...

Abstract With the rise of interest in digital fabrication reinforced concrete structures, a great number structural designs that depart from standard prismatic shapes are being suggested. This has prompted an exploration steel reinforcement strategies alternative to classical deformed or “ribbed” rebars. One such is cut internal plates using waterjet cutting machine. Advantages automated includ...

The nature of chemical bonds on dynamic paths was investigated using the complete active space valence-bond (CASVB) method and the Born-Oppenheimer dynamics. To extract the chemical bond picture during reactions, a scheme to collect contributions from several VB (resonance) structures into a small numbers of indices was introduced. In this scheme, a tree diagram for the VB structures is constru...

Atomic structures, energies, and stress distributions of symmetrical ^011& tilt grain boundaries ~GB’s! and selected GB triple junctions ~TJ’s! in diamond as well as a multiply twinned diamond particle have been calculated using an analytic bond order potential function. In general, energies of ^011& tilt GB’s are about 1 J/m lower than those for ^001& tilt GB’s calculated with the same analyti...

A molecule is formed by the combination of atoms and in the process they attain the electronic configuration of an inert gas. A chemical bond is formed as a result of attraction between the combining atoms. To explain the formation of bonds in diatomic molecules, such as H2, O2, N2, Cl2 etc., it was first suggested by G.N. Lewis that atoms of such molecules attain an inert gas electronic config...