The uptake, toxicity, and morphological transformation efficacy of various water-insoluble nickel compounds were examined in tissue culture. Particles (2.2 to 4.8 micrometers) of crystalline Ni3S2, crystalline NiS, and crystalline Ni3Se2 were actively phagocytized by cultured cells as determined by light and electron microscopy. However, particles of similar size consisting of amorphous NiS and...

Nickel has found increasing application in electronic, automobilemanufacturing, plating, and metal industries so on. Producing highquality powders to satisfy demand for advanced materialsis of very high importance. There are a few numbers standard powderproduction techniques. An acidic leaching been applied presentresearch. Sulfuric acid used leach nickel wastes platingindustry. To produce oxid...

Although alloy tin plating has been known and used for many years, this paper will describe the use of a new non-cyanide tin/zinc alloy as a possible replacement coating for cadmium and the use of a tin/nickel alloy as a possible substitute for barrel decorative chromium plating. A review on the corrosion properties of tin, zinc and cadmium compared to tin/zinc alloys and review of the properti...

BACKGROUND Exposure to chromium during electroplating is a recognised though poorly characterised cause of occupational asthma. The first series of such patients referred to a specialist occupational lung disease clinic is reported. METHODS The diagnosis of occupational asthma was made from a history of asthma with rest day improvement and confirmed by specific bronchial provocation testing w...

The utility of electrochemical sensors, based on stripping voltammetry, for monitoring the concentration of toxic metals in electroplating rinse tanks is described. New concepts in stripping voltammetry, based on the use of ultramicroand modified electrodes and an adsorptive preconcentration step, successfully address many of the requirements for controlling rinsewater composition. The utility ...

In the context of developing an innovative seismic dissipation system, which aims to compromise on steadiness friction and processes costs, this work deals with tribological characterization S355JR structural steel, whose surface has been preliminarily treated by different mechanical galvanic processes. Tribological tests were performed in a pin-on-disk configuration reciprocating motion, using...