The production of nanoparticles as thin film coating performed with electrodeposition method is easier and cheaper than other methods. Because, can be controlled the change ingredients in bath composition. In this study, Co, Ni, CoNi alloy films were fabricated through composition that consists cobalt sulphate (CoSO4.7H2O), nickel (NiSO4.6H2O), (II) chloride (NiCl2 6H2O) boric acid (H3BO3). Cry...

Materials: Chemicals were purchased from Sigma-Aldrich BV and used as received: the surfactants, sodium bis(2-ethylhexyl)sulphosuccinate (Na-AOT, 99%) and 4(1,1,3,3-Tetramethylbutyl)phenyl-polyethylene glycol (Triton-X 100, 99.999%); the solvents, n-heptane (99.9%) and toluene (≥99.5%); the metal precursors, chloroplatinic acid hydrate (99.9%), iron chloride (≥99%), cobalt acetate tetrahydrate ...

The administration of cobalt to rats caused a marked increase in the oxidative degradation of heme (hematin, iron protoporphyrin-IX) by hepatic microsomal enzymes. The onset of this enzyme stimulation was very rapid, beginning within 2 hours after injection of the metal and reaching its maximum in 16 to 24 hours. During the rapid phase of stimulation, i.e. the first 2 to 4 hours, when heme oxid...

On average, mineral elements account for 4 % of total body mass and part of every tissue, liquid, cell and organ in human body. There is a sufficient evidence that minerals, both independently or in proper balance with other minerals, have structural, biochemical and nutritional functions that are very important for overall human health, both mental and physical (Vahčić et al., 2010). Furthermo...

The aim of the study was to evaluate the results of epicutaneous patch testing with a standard series of contact allergens in children suspected to have allergic contact dermatitis (ACD), and to compare the results of patch testing between children and adults. Clinical records of children defined as patients aged ≤18 years and adults examined at Department of Dermatology and Venereology, Karlov...

In this paper, the effect of nanocatalytic metal-organic framework based on copper metal and bis-tetrazolamine (CuBTA) ligand functionalized with cobalt (II) oxide nanoparticles on the thermal decomposition behavior of ammonium perchlorate (AP), using differential survey calorimetry (DSC) has been reviewed. First, the metal-organic framework (CuBTA) was synthesized from the raw materials of cop...

To capture global responses to metal poisoning and mechanistic insights into metal toxicity, gene expression changes were evaluated in whole adult male zebrafish following acute 24 h high dose exposure to three metals with known human health risks. Male adult zebrafish were exposed to nickel chloride, cobalt chloride or sodium dichromate at concentrations corresponding to their respective 96 h ...

One of the main barriers blocking sustainable hydrogen production is the use of expensive platinum-based catalysts to produce hydrogen from water. Herein we report the cost-effective synthesis of catalytically active, nitrogen-doped, cobalt-encased carbon nanotubes using inexpensive starting materials-urea and cobalt chloride hexahydrate (CoCl2·6H2O). Moreover, we show that the as-obtained nano...

Aim: The aim of the study was to analyse the trends of allergy to the 10 most frequent contact allergens and to assess ageand sex-dependent changes of the trends in patients examined in 1996-2009. Material and methods: 4433 patients underwent patch tests with a set of allergens containing: potassium dichromate, nickel sulfate, cobalt chloride, 4-phenylenediamine, formaldehyde, thiuram mix, merc...