Artificial neural networks are one of the modern methods of the production optimisation. An attempt to apply neural networks for controlling the quality of bentonite moulding sands is presented in this paper. This is the assessment method of sands suitability by means of detecting correlations between their individual parameters. This paper presents the next part of the study on usefulness of a...

Abstract The self‐healing capability is highly desirable in semiconductors to develop advanced devices with improved stability and longevity. In this study, the automatic silicon nanowires reported, which are one of most important building blocks for high‐performance semiconductor nanodevices. A recovery fracture strength (10.1%) on fractured achieved, demonstrated by situ transmission electron...

OBJECTIVES The aim of this article is to propose a resin cement cleaning protocol for use before recementing a debonded restoration. STUDY DESIGN Ceramic samples were fabricated from IPS d.sign® and IPS e.max Press® and were treated with hydrofluoric acid etching (HF), or HF+silane (S), or HF+S+adhesive or HF+S+A+resin cement. All samples were placed in a furnace at 650º for one minute in ord...

The purpose of this study was to determine the in vitro bond strengths of composite rebonded to stainless steel crown metal (SS) using five different bonding agents after composite to SS bond failure had been produced. The adhesive systems were applied to the failed bonds following the manufacturers' instructions and, as a control, composite was bonded to SS without using a bonding agent. Each ...

Missing dimer vacancies are always present on the clean Si(OO1) surface. The vacancy density can be increased by ion bombardment (Xe+, Ar+), etching (0,, Bra,&, etc.) or Ni contamination. The equilibrium shape at low vacancy concentrations (~0.2-0.3 monolayers) of these vacancy islands is elongated in a direction perpendicular to the dimer rows of the upper terrace, whereas for higher vacancy c...