Inductively coupled plasma-optical emission spectroscopy (ICP-OES) was used to determine the bulk metal elemental composition of 62 modern bronze sculptures cast in Paris in the first half of the twentieth century from the collections of The Art Institute of Chicago and the Philadelphia Museum of Art. As a result, a comprehensive survey of the alloy composition of the sculptures of many promine...

a selective and sensitive method for determination of cadmium and zinc is presented. the method is based on adsorptive accumulation of the complexes of cd (ii) and zn (ii) ions with 4-amiono-5-methyl-2,4-dihydro-3h-1,2,4-triazol-3-tion (mmtt) onto hanging mercury drop electrode (hmde), followed by reduction of the adsorbed species by voltammetric scan using differential pulse modulation. the li...

Abstract The article presents studies of the influence titanium on microstructure and mechanical properties zinc casting alloy ZL2. positive effect its addition strength die castings made this was found. Castings with had a fine structure higher tensile (approx. 255 MPa for an Ti addition) compared to base material 200 MPa). modifier also increased hardness obtained from 100 HBW (ZL2) 130 (allo...

The purpose of this study was to examine how Co-Cr-Mo dental alloy behaves in the solutions of different pH value and different composition over a relatively long period of time. Co-Cr-Mo dental alloy was exposed in vitro to either simulated saliva (phosphate buffer pH 6.0), a highly acidic medium resembling the extreme conditions in the oral cavity (phosphate buffer pH 3.5), and in lactic acid...

INTRODUCTION Root canal-treated teeth are weaker than vital teeth and are more susceptible to fractures. Therefore, special precautions should be adhered to, such as the use of various types of cast or prefabricated posts. Regarding the effect of post material on fracture resistance of teeth, the aim of this in vitro study was to evaluate the effect of non-precious gold color alloy (NPG) and ni...

In the manufacturing industry, surface structures and topographies present at functional areas of mechanical parts play a vital role in various performance characteristics, such as corrosion resistance, weldability, wear behaviors, etc. Copper–zinc alloys are extensively used industry. Laser ablation has potential to create variety on ablated substrate. The size geometry largely depend selectio...