A cell line (HRRT) derived from a hereditary renal rat tumor has been used in an assay for initiators and promoters of carcinogenesis based on attachment-independent survival in aggregates. Treatment with single noncytotoxic doses of the carcinogens urethan (1 mM), N-methyl-N-nitrosourea (30 microM), and benzo(a)pyrene (0.2 microM) for 1 hr did not affect survival of HRRT cells in the aggregate...

The following review is Part III of a series concerned with the direct hydrometallurgical processing nickel sulfide flotation concentrates. In first part this series, piloted leaching processes and commercial operations that employed were comprehensively reviewed. second laboratory investigations into pressure concentrates critically analyzed. nickeliferous at ambient are reviewed, challenges r...

The following review is the second part of a series concerned with direct hydrometallurgical processing nickel sulfide flotation concentrates. In first this series, piloted leaching processes and commercial operations which employed were comprehensively reviewed. Part II laboratory investigations into pressure nickeliferous concentrates are critically analyzed. From review, it apparent that sul...

Abstract In the present work, electrodeposition of Zn–Ni alloy from Sulfate bath was carried out in presence a novel brightener (CG), condensation product Cysteine Hydrochloride and Glutaraldehyde. The corrosion studies were using Electrochemical Impedance spectroscopy Potentiostatic techniques. They confirmed an increase resistance protection ability bright zinc–nickel coatings. Surface morpho...

Experimental studies generally performed at this laboratory on the solubility of particular salts and oxides in dilute and concentrated aqueous solutions of electrolytes at temperatures up to 400°C are presented. The techniques used are described. Some of this work applies an extended Debye-HUckel equation as a function of the ionic strength of the solution at the high temperatures. From the va...

In this work, hydrometallurgical recycling of metals from high-cobalt-content spent lithium-ion batteries (LIBs) laptops was studied using precipitation and solvent extraction as alternative purification processes. Large amounts cobalt (58% by weight), along with nickel (6.2%), manganese (3.06%) lithium (6.09%) are present in LiCoO2 Li2CoMn3O8 prominent Co-rich phases the electrode material. Th...

Metals play an important role in microbial metabolism by acting as cofactors for many enzymes. Supplementation of biological processes with metals may result in improved performance, but high metal concentrations are often toxic to microorganisms. In this work, methanogenic enrichment cultures growing on H2/CO2 or acetate were supplemented with trace concentrations of nickel (Ni) and cobalt (Co...