Archaean komatiites of the greenstone belt in Manica area, western Mozambique contains accessory amount of disseminated chromite grains. The komatiite rocks comprise peridotitic and basaltic komtiite. These komatiites are affected by regional metamorphism as all of the studied area. It is observed that only chromian spinel is preserved as the primary mineral and that all the other primary miner...

BACKGROUND Although stainless steel has been produced for more than a hundred years, exposure-related mortality data for production workers are limited. AIMS To describe cause-specific mortality in Finnish ferrochromium and stainless steel workers. METHODS We studied Finnish stainless steel production chain workers employed between 1967 and 2004, from chromite mining to cold rolling of stai...

biogeochemical investigation on s. orientalis, a flora growing on the soils derived from serpentinized dunite in the forumad area, sabzevar ophiolite has been conducted in order to examine the plant-soil relationship in chromite prospecting. due to engagement of cr in the chromite crystal structure and its non-essential role in the plant’s life cycle, ni was used as pathfinder element in biogeo...

Green protocols for the synthesis of nanoparticles have been attracting a lot of attention because they are eco-friendly, rapid, and cost-effective. Nickel and nickel oxide nanoparticles have been synthesized by green routes and characterized for impact of green chemistry on the properties and biological effects of nanoparticles in the last five years. Green synthesis, properties, and applicati...

ofcells to carcinogenic nickel compounds induces many genes that are commonly expressed in cancer cells but not in normal cells. Nickel compounds have been well established as human carcinogens. Investigations into the molecular mechanisms of nickel car-cinogenesis have revealed that not all nickel compounds are equally carcinogenic: certain water-insoluble nickel compounds exhibit potent carci...

BACKGROUND AND OBJECTIVE Nickel is one of the most prevalent causes of contact allergy in the general population. This study focuses on human exposure to airborne nickel and its potential to induce allergic sensitization. MATERIALS AND METHODS The study group consisted of 309 children at school-starter age living in the West of Germany in the vicinity of two industrial sources and in a rural ...

Nickel acquisition is necessary for urease activity, a major virulence factor of the human gastric pathogen Helicobacter pylori. NixA was identified as a specific nickel uptake system in this organism. Addition of small amounts of nickel to media strongly stimulates urea hydrolysis. On the other hand, high nickel concentrations are deleterious to cell growth. As a possible protective reaction, ...