A study was conducted on the arc and melting efficiency of the plasma arc, gas tungsten arc, gas metal arc, and submerged arc welding processes. The results of this work are extended to develop a quantitative method for estimating weld metal dilution in a companion paper. Arc efficiency was determined as a function of current for each process using A36 steel base metal. Melting efficiency was e...

this experiment was conducted to investigate the effect of phytase superdoses alone or in combination with citric acid (ca) in canola meal-based diets severely limited in available phosphorus (pa) on growth performance, plasma phosphorus (p), and tibia ash (ta) in broilers from 22 to 42 d of age. two hundreds and eighty 21-d-old male broilers were used in 28 pens of 10 birds per each. the exper...

wetability of biocompatible polymers can be improved by plasma surface modification. the purpose of this study was to surface modify an experimental poly (dimethylsiloxane) rubber (pdms) material in order to improve its wetability and biocompatibility. surface properties of the pdms were characterized using contact angles measurement for wetability analysis. samples of experimental silicone rub...

Abstract Plasma in hydrogen-containing atmospheres is an efficient method for the reduction of iron oxides. Although a vast number approaches were performed bulk Fe oxides with thermal hydrogen plasmas, there almost no information about non-thermal plasma efficiency atmospheric pressure range. In current article we present natively oxidized surfaces applying dielectric barrier discharge Ar/H 2 ...

Extraction of positive and negative ions from a saddle antenna radio-frequency surface plasma source (SA RF SPS) is considered. Several versions of new plasma generators with different antennas and magnetic field configurations were tested in the small Test Stand. The efficiency of positive ion generation in plasma has been improved up to 80 times from 2.5 mA/cm kW to ~0.2 A/cm per 1 kW. For ce...

Silicon surface passivation of hydrogenated silicon (Si:H) thin films deposited by radio frequency (RF) and direct current (DC) plasma process was investigated by measuring effective minority carrier lifetime (τeff) on Si (100) and (111) wafers and correlated with the silicon heterojunction (SHJ) cell performances. Apparently the higher ion bombardment in DC compared to RF plasma during growth ...

In this study, oxidative energy metabolism was determined in 5 captive bottlenose dolphins (Tursiops truncatus), and subsequently compared to 6 Thoroughbred riding horses, and 12 lactating Holstein cows in order to assess symmorphosis of each animal species. Plasma metabolites profile, plasma MDH (M) and LDH (L) activities, M/L ratio, and plasma LDH isoenzyme distribution patterns were all exam...