There are no appreciable amounts of nickel resources in Iran; therefore, secondary resources of this element are to be more considered in future. Spent nickel catalysts that are used in various industrial processes are one of them. For example nickel catalyst that is used in hydrogenation of edible oil have large amounts of nickel and they are generally supported on porous materials like silica...

ncorporating Ni-laden waste sludge into kaolinite-based construction ceramic materials appears promising based on the identified nickel bearing hases, evaluated incorporation efficiency and nickel leachability of the products. Nickel aluminate spinel (NiAl2O4) results from sintering kaolinite nd nickel oxide between 990 and 1480 ◦C, with more than 90% incorporation efficiency achieved at 1250 ◦...

OBJECTIVES To assess the health risks associated with consumption of drinking water with elevated nickel concentration in a NSW country town named Sampleton. METHODS We used enHealth Guidelines (2002) as our risk assessment tool. Laboratory test results for nickel in water samples were compared with the Australian Drinking Water Guidelines 2004 and the World Health Organization's (WHO) Guidel...

Nickel allergy is a cell-mediated immune response. Most cases of nickel allergy can be related to skin contact with nickel containing metallic items as buttons, suspenders, ear-ornaments etc. Epidemiological studies have shown a sensitization frequency of 20 percent in young females and 10 percent in the elderly. Two to four percent of males are sensitized. The biological significant parameter ...

Carcinogenic nickel compounds alter the program of gene expression in normal cells and induce a pattern of gene expression similar to that found in nickel-induced cancers. Here we have demonstrated that nickel exposure induced hypoxic signaling pathways by inducing hypoxia-inducible transcription factor-1 (HIF-1), which mediated the induction of genes required by cells to survive hypoxia. We al...

Spent catalysts are principally solid waste which that coming out from nitrogenous fertilizer industry, during the production of ammonia, resulting in the production of large amount of solid waste containing nickel, which is the spent or deactivated catalysts. These catalysts contain from 12-14% nickel based on the production process in fertilizer industry disposal of spent catalyst is a proble...

The purpose of this study was to determine whether nickel-transformed Chinese hamster cells exhibit nonrandom chromosomal alterations involving heterochromatic regions, particularly the heterochromatic long arm (q) of the X-chromosome, since nickel was previously shown to induce acute chromosomal damage predominantly in heterochromatin. Early passage male or female Chinese hamster embryo cells ...

The Akt signaling pathway has been implicated in a wide range of cellular functions involving cell survival and proliferation, angiogenesis, metabolism and cell migration. Accumulating evidence suggests that Akt perturbations play an important role in human malignancy. Here, we investigated Akt perturbation in nickel-transformed cells. Chronic treatment of human bronchial epithelial BEAS-2B cel...

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...

AIMS To examine, from occupational surveillance reporting data, whether scheme reporters considered nickel exposure to play a role in occupational contact dermatitis (OCD) in the UK. METHODS Data on occupational skin disease in the UK are collected by two occupational disease surveillance schemes, EPIDERM and OPRA. Cases of OCD believed to have relevant nickel exposure reported to EPIDERM or ...