Metabolomic and bioenergetic responses of human hepatocellular carcinoma cells following exposure to commercial copper hydroxide nanopesticide

Copper hydroxide (Cu(OH)2) nanopesticide formulas are becoming more frequently used in agriculture, however human exposure risks are not completely characterized. Here, the effect of Cu(OH)2 nanopesticide exposure on cell metabolism...

Electrorefining Process of the Non-Commercial Copper Anodes

The electrorefining process of the non-commercial Cu anodes was tested on the enlarged laboratory equipment over 72 h. Cu anodes with Ni content of 5 or 10 wt.% and total content of Pb, Sn, and Sb of about 1.5 wt.% were used for the tests. The real waste solution of sulfuric acid character was a working electrolyte of different temperatures (T1 = 63 ± 2 °C and T2 = 73 ± 2 °C). The current density of 250 A/m2 was the same as in the commercial process. Tests were confirmed that those anodes can be used in the commercial copper electrorefining process based on the fact that the elements from anodes were dissolved, the total anode passivation did not occur, and copper is deposited onto cathodes. The masses of cathode deposits confirmed that the Cu ions from the electrolyte were also deposited onto cathodes. The concentration of Cu, As, and Sb ions in the electrolyte was decreased. At the same time, the concentration of Ni ions was increased by a maximum of up to 129.27 wt.%. The major crystalline phases in the obtained anode slime, detected by the X-ray diffraction analyses, were PbSO4, Cu3As, SbAsO4, Cu2O, As2O3, PbO, SnO, and Sb2O3.

MUELLER BRASS C36000

Mueller Brass C36000 is a wrought, Cu-Zn-Pb alloy (leaded brass) that is suitable for high-speed screw machining applications and moderate thread rolling. On the basis of strength alone, it can safely be substituted for leaded steel in many applications. UNS C36000 is the most important commercial copper alloy, surpassing all but copper itself in terms of annual consumption. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating and machining. Filing Code: Cu-918. Producer or source: Mueller Brass Company.

Intriguing Effects of Diatomite on the Electrical Properties of Curable Copper Conductive Paste

In this work, the optimal sintering temperature and time of commercial copper paste were tested experimentally. The electrical properties of conductive paste including square resistance and resistivity were characterized and analyzed. The influence of diatomite with different purification processes on the electrical properties of commercial copper paste was analyzed. The performance of copper slurry modified by copper-based modified diatomite prepared by two-step reduction method was analyzed. The optimum square resistance and resistivity was obtained with copper paste doped by 0.25wt.% and 1 h-ball milled diatomite and was 0.02Ω/ϒ and 0.011Ω·mm, respectively.