the lack of complete understanding of the substrate effects on carbon nanotubes (cnts) growth poses a lot oftechnical challenges. here, we report the direct growth of nanostructures such as the cnts on stainless steel 304and brass substrates using thermal chemical vapor deposition (tcvd) process with c2h2 gas as carbon sourceand hydrogen as supporting gas mixed in ar gas flow. we used an especi...

The non-asymmetric rolling process of copper and brass wire has been simulated with the Abaqus software. Presented finite element model in this simulation of rolling predicted output curvature and contact surface width in the non-asymmetric mode (in equality of diameter of rollers, the rotational speed of the rollers and the rollers’ surface finish). The material used in this research has strai...

A fully bonded m~dtiloop wire appliance for the correction of ectopically erupting permanent molars is described. The appliance allows control in the anteroposterior, vertical, and transverse planes. Ectopically erupting first permanent molars are seen in about 3% of the population.~,2 Sixty-six per cent of ectopically erupting maxillary first permanent molars self-correct by jumping over the i...

The negative corona discharge has been generated in flowing oxygen and carbon dioxide. Electrodes in the reactor were in coaxial geometry. The inner (wire) electrode was made of molybdenum and the outer electrode was made of stainless steel, aluminium or brass. The negative corona discharge has been generated in flowing pure oxygen and carbon dioxide at atmospheric pressure and ambient temperat...

Bender, D., and Riordan, F.\ “Electrolytic Recovery of Mercury Metal from a Mercuric C loride-Containing Waste ’‘ Met Wasre Manage. A l t Symp ]roc , Calif Dep Health Serv , 137 (1989). I Higgins, T. E., and Gemmell, A. S , “lndustnal waste recovery and reuse: four industrial wastewater case histories.” Proc Ind Waste Symp., 62nd Annual Con$ Water Pollut Control Fed , 293 (1989). , Crane, A., “...

The objective of the present work was to investigate the effect of the wire electrical discharge machining process parameters on material removal rate of titanium alloy using Taguchi approach. A brass wire of 250μm was applied as a tool electrode to cut the specimen. L36 mixed orthogonal array (2 ×3) has been selected for experimentation under different variables like dielectric conductivity, p...