O-Functionalised salen ligands were employed as bridging ligands in the synthesis of homo- and heterometallic salen complexes with early and late transition metals (H(2)salen: N,N'-bis(salicylidene)ethylenediamine, systematic name: 2,2'-{ethane-1,2-diylbis(nitrilomethylidine)}diphenol). A new type of O-functionalised salen ligand was synthesised, which contains alkyl groups to enhance the solub...

The content of heavy metals in fish different ecological groups the conditions Argazinsky reservoir (Russia) has been studied, its safety when used as a product nutrition was given. material study “local” (bream, pike, perch, roach, whitefish) caught by fishermen. determined atomic absorption method. Compared to muscular tissue, bone tissue found accumulate more manganese, zinc, cadmium, lead, ...

The etiology and pathophysiology of schizophrenia remain obscure. This study explored the associations between schizophrenia risk and serum levels of 10 trace elements. A 1:1 matched case-control study was conducted and matched by age and sex. Blood samples were collected to determine the concentrations of nickel, molybdenum, arsenic, aluminum, chromium, manganese, selenium, copper, iron and zi...

to evaluate the effect of different concentrations of copper, manganese and nickel on the growth and sporulation of trichoderma species of; t. harzianum, t.longibrachiatum and t. tomentosum, an experiment was carried out in vitro at 25oc±2 on soil extract agar medium of five replicates. the results revealed that among these species t. longibrachiatum had the highest growth rate (47.78mm) after ...

Bartha, R. (University of Washington, Seattle), and E. J. Ordal. Nickel-dependent chemolithotrophic growth of two Hydrogenomonas strains. J. Bacteriol. 89:1015-1019. 1965.-The trace element requirements for growth of facultative chemolithotrophic Hydrogenomonas strains H1 and H16 were investigated under both autotrophic and heterotrophic conditions. The organisms were grown in a mineral medium,...

OBJECTIVES The aims of this study were to quantify the metallic ions released by various dental alloys subjected to a continuous flow of saliva and to estimate the nutritional and toxicological implications of such a release. METHODS Four pieces of three nickel-based, one noble, one high-noble and two copper-aluminum alloys were cast and then immersed in a continuous flow of artificial saliva...

The nickel-containing enzyme urease is an essential colonization factor of the gastric pathogen Helicobacter pylori, as it allows the bacterium to survive the acidic conditions in the gastric mucosa. Although urease can represents up to 10% of the total protein content of H. pylori, expression of urease genes is thought to be constitutive. Here it is demonstrated that H. pylori regulates the ex...

concentrations of heavy metals were determined in muscles of kutum (rutilus frisii kutum) collected from the central part of the southern end of the caspian sea during february 2011. except for silver (ag) and nickel (ni) which were below the limits of detection, the average levels of arsenic (as), cadmium (cd), copper (co), chromium (cr), copper (cu), iron (fe), manganese (mn), lead (pb), sele...

A spectrophotometric flow-based method for the determination of nickel in recreational waters is proposed. In this scenario, strategy was to devise a miniaturized and automatic system based on sequential injection analysis, aiming an expeditious, real-time low-cost determination. For determination, dimethylglyoxime used as color reagent due its selectivity nickel. Considering expected low conce...