The disposal of scrap rubber, represented by retired tires, has achieved industrial achievements, but the handling brass-coated steel wire as a structural reinforcement in tires received little attention. A feasible and efficient method acquiring economical resources is proposed to extract copper zinc (Cu-Zn) from wire. With 20% ammonia, 10% hydrogen peroxide, liquid-solid ratio 10, brass coati...

The complexity of brass instrument radiation theory has led to a large number of hypotheses and simplifications, which allow for the development of computable models. Most of these, used in the calculation of input impedances, sound simulation and instrument auralisation amongst others, are yet to be validated experimentally. Schlieren imaging techniques permit visualisation of pronounced gradi...

The dearth of females playing so-called masculine instruments has not gone unnoticed, but frameworks for investigating females’ participation have been driven almost entirely by a feminist agenda. A construct for studying gendered participation in music, employing a post feminist perspective is presented. As one of the major areas in which female participation does not match their male counterp...

Rhizosphere investigations are restricted by the sheer number of cultures that must be handled in the multitude of different tubed media needed to characterize each isolate. A current rhizosphere study called for the use of 25 different diagnostic media with each of hundreds of isolates, a burdensome and laborious problem. Moreover, the replica plating technique of J. Lederberg and E. M. Lederb...

Strength tests on single lap joints with one adhesive (AV138/HV998) and layer thickness (0.5 mm), three peel stoppers (brass bolt, nylon bolt steel pin), four lengths (12.5 mm, 25 40 mm 100 mm) were conducted to investigate the effects of varying length stiffness peel-stop fasteners. Joint failure stress decreased, but force increased length. Furthermore, joint was higher stopper. The effect br...

accumulative roll-bonding (arb) is a severe plastic deformation process that is using rolling to produce ultrafine grains in coarse grained metallic materials. in this study, arb has been applied on 70/30 brass up to 6 cycles at ambient temperature and non-lubricated conditions to apply a true strain up to 4.8 von mises strain. microstructures of arbed brass samples were characterized by scanni...

Cu-Zn alloys have been electrodeposited from a pyrophosphate electrolyte containing Cu2P207> Zn2P207 salts and an excess of K4P2O7 and KN03. Current-potential data for both copper and zinc, as well their plating current efficiencies were determined from electrochemical polarisation experiments. Copper deposition commenced at potentials below -0.208 V whereas zinc was deposited only below -1.157...

This paper aims to perform experimental validation of RF–plasma interaction behaviors for the purposes wave transmission and reflection. Wave reflection from plasma is interest as it finds applications in pulse compression RF polarizer-based systems. Simulations are performed using a combination Magic3D COMSOL multiphysics characterize plasma–wave discharge tube properties. The goal generate wi...

OBJECTIVE Accurate ear-canal acoustic measurements, such as wideband acoustic admittance, absorbance, and otoacoustic emissions, require that the measurement probe be tightly sealed in the ear canal. Air leaks can compromise the validity of the measurements, interfere with calibrations, and increase variability. There are no established procedures for determining the presence of air leaks or cr...