The temperature and field dependencies of magnetization of NdFeAsO0.94F0.06 bulk sample are shown to exhibit the Curie-Weiss behaviour, both in the superconducting and normal states. To address the origin of the strong paramagnetic signal, particularly to reveal contributions from antiferromagnetic second phases in sintered NdFeAsO0.94F0.06, the magnetic response of Nd2O3 was measured and compa...

Copyright 2006 Society of Photo-Optical Instrumentation Engineers.

The effect of five spectrally selective filters on the performance of an acuity-dependent visual search task was evaluated. The filters were: A) a neutral density filter (control condition); B) a 5200A green interference filter; C) a 3215-250 red filter; D) a neodymium visor; and E) a holographic visor. The observers were presented with 5 blocks of 10 slides per filter. Each slide projected a 6...

objectives: micromechanical retention of resin cements to alloys is an important factor affecting the longevity of metal base restorations. this study aimed to compare the bond strength and etching pattern of a newly introduced experimental etchant gel namely nano met etch with those of conventional surface treatment techniques for nickel-chrome (ni-cr) and high noble alloys.  materials and met...

(HIPing), can improve the tribo-mechanical properties of cobalt-based alloys. The alloy selected for this investigation had a nominal wt.% composition of Co-30Cr-14W-1C, which is similar to the composition of the commercially available Stellite®4 alloy. The Hot Isostatic Pressed (HIPed) alloy had a much finer microstructure than the cast alloy, which showed a typical hypoeutectic dendritic micr...

Objectives: This study is undertaken to evaluate the dependence of bond strength of 100% fresh nonprecious alloy and the combination of 50% recast (used) alloy and 50% fresh alloy with three different veneering ceramic material. Materials and methods: To evaluate the shear bond strength between new and recast alloy nonprecious Ni-Cr alloy (System KN®, Adentatec, Germany) was used with three dif...

PURPOSE The aim of this study was to evaluate the effect of metal primers on the bonding of dental alloys and veneer resin. Polyvinylpyrrolidone solution's tarnish effect on bonding strength was also investigated. MATERIALS AND METHODS Disk-shape metal specimens (diameter 8 mm, thickness 1.5 mm) were made from 3 kinds of alloy (Co-Cr, Ti and Au-Ag-Pd alloy) and divided into 4 groups per each ...

A new kind of biomedical shape memory TiNiAg alloy with antibacterial function was successfully developed in the present study by the introduction of pure Ag precipitates into the TiNi matrix phase. The microstructure, mechanical property, corrosion resistance, ion release behavior in simulated body fluid, cytotoxicity and antibacterial properties were systematically investigated. The typical m...