نتایج جستجو برای: supported vanadium magnesium catalys

تعداد نتایج: 238762  

2003
Lucy Marzban John H. McNeill

Vanadium compounds are glucose-lowering agents that are shown to mimic/enhance most of the metabolic actions of insulin both in vitro and in vivo. Several studies have demonstrated that vanadium treatment lowers plasma glucose levels in experimental models of type 1 diabetes and enhances insulin sensitivity in models of type 2 diabetes. Therefore, these compounds have gained attention as candid...

2009
Chang-Yong Kim Jeffrey A. Klug Peter C. Stair Michael J. Bedzyk

Additional resources and features associated with this article are available within the HTML version: • Supporting Information • Access to high resolution figures • Links to articles and content related to this article • Copyright permission to reproduce figures and/or text from this article Supported vanadium oxides processed under ambient environments have been studied by using X-ray standing...

2001
A. Olness J. Rinke

Because vanadium (V) is easily reduced to a cationic form within plant cells, data from resin-extraction of soil were analysed for evidence 5 of interactions between V and the resin-extractable concentrations of magnesium (Mg) and calcium (Ca) on soybean seed yield. Three varieties, 9091, 9061 and 704, were grown over a 3-year period in a corn± soybean±wheat rotation. Surface soil samples (0±15...

Journal: :Clinical chemistry 1982
S D Stroop G Helinek H L Greene

We describe a sensitive method for the determination of vanadium in biological substances by atomic absorption spectroscopy. By using background correction and pyrolytically coated graphite tubes with flameless apparatus, this vanadium assay has a sensitivity of 65 pg and a detection limit of 30 pg, approximately sixfold more sensitive than previously reported assays involving this technique. T...

Journal: :Acta biochimica Polonica 2012
Jan Korbecki Irena Baranowska-Bosiacka Izabela Gutowska Dariusz Chlubek

Vanadium belongs to the group of transition metals and is present in the air and soil contaminants in large urban agglomerations due to combustion of fossil fuels. It forms numerous inorganic compounds (vanadyl sulfate, sodium metavanadate, sodium orthovanadate, vanadium pentoxide) as well as complexes with organic compounds (BMOV, BEOV, METVAN). Depending on the research model, vanadium compou...

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