نتایج جستجو برای: vanadium iv

تعداد نتایج: 186325  

Journal: :Metals 2021

The application of metals in biological systems has been a rapidly growing branch science. Vanadium investigated and reported as an anticancer agent. Melanoma is the most aggressive type skin cancer, incidence which increasing annually worldwide. It paramount importance to identify novel pharmacological agents for melanoma treatment. Herein, systematic review publications including “Melanoma Va...

2017
Abdel Majid A Adam Ahmed M Naglah Mohamed A Al-Omar Moamen S Refat

Diabetes patients suffer from chronic disorders in the metabolism due to high blood sugar caused by anomalies in insulin excretion. Recently, vanadium compounds have been prepared and functionalized to decrease the level of hyperglycemia. Vitamin A boosts beta cell activity; therefore, the lack of this vitamin plays a role in the development of type 2 diabetes. The aim of this article focused o...

Journal: :Biochimica et biophysica acta 2003
Tatsuya Ueki Takahiro Adachi Sonoko Kawano Masato Aoshima Nobuo Yamaguchi Kan Kanamori Hitoshi Michibata

Since the beginning of the last century, it has been known that ascidians accumulate high levels of a transition metal, vanadium, in their blood cells, although the mechanism for this curious biological function remains unknown. Recently, we identified three vanadium-binding proteins (vanabins), previously denoted as vanadium-associated proteins (VAPs) [Zool. Sci. 14 (1997) 37], from the cytopl...

Journal: :Chemical communications 2010
Victor Chechik Marco Conte Trevor Dransfield Michael North Marta Omedes-Pujol

During asymmetric cyanohydrin synthesis catalysed by vanadium(V)oxo(salen) complexes, the catalysts are reduced to vanadium(IV)oxo(salen) as determined by EPR spectroscopy; the reducing agent is cyanide which is oxidised to cyanogen via a non-radical mechanism.

Journal: :Inorganic chemistry 2008
Manuel Aureliano Fernando Henao Teresa Tiago Rui O Duarte J J G Moura Bharat Baruah Debbie C Crans

The general affinity of the sarcoplasmic reticulum (SR) Ca (2+)-ATPase was examined for three different classes of vanadium coordination complexes including a vanadium(V) compound, pyridine-2,6-dicarboxylatodioxovanadium(V) (PDC-V(V)), and two vanadium(IV) compounds, bis(maltolato)oxovanadium(IV) (BMOV), and an analogue of amavadine, bis( N-hydroxylamidoiminodiacetato)vanadium(IV) (HAIDA-V(IV))...

2010
Sumit Khanra Rachel Shaw Madeleine Helliwell Floriana Tuna Christopher A. Muryn Eric J. L. McInnes Richard E. P. Winpenny

The synthesis and structural characterization of two families of low-valent vanadium(III) {V6P4} and vanadium(III/IV) {V13P8} phosphonate complexes are reported. Magnetic characterization is reported for representative examples.

Journal: :Acta crystallographica. Section C, Structural chemistry 2016
Cameron Black Philip Lightfoot

V(IV) oxyfluorides are of interest as frustrated magnets. The successful synthesis of two-dimensionally connected vanadium(IV) oxyfluoride structures generally requires the use of ionic liquids as solvents. During solvothermal synthesis experiments aimed at producing two- and three-dimensional vanadium(IV) selenites with triangular lattices, the title compound, diaquatetra-μ-fluorido-dioxidodiv...

Journal: :Biochimica et biophysica acta 2006
Masafumi Yoshinaga Tatsuya Ueki Nobuo Yamaguchi Kei Kamino Hitoshi Michibata

Some ascidians accumulate vanadium in vanadocytes, which are vanadium-containing blood cells, at high levels and with high selectivity. However, the mechanism and physiological significance of vanadium accumulation remain unknown. In this study, we isolated novel proteins with a striking homology to glutathione transferases (GSTs), designated AsGST-I and AsGST-II, from the digestive system of t...

   A method for treating fuel oil and waste water of power plant is suggested which is including vanadium elimination through contacting with humic acid coated magnetic nano-adsorbent. The nano-adsorbent was modified with humic acid (HA) as a compound having carboxyl, hydroxyl and amin functional groups. HA/Fe3O4 nanoparticles were prepared by a co-precipitation procedure and were character...

2014
M. F. Rahman

A new thiosemicarbazone based-sorbent matrix with sensitive selectivity and accurate spectrophotometric method was proposed for the determination of vanadium (IV) using thiophene-2carboxaldehyde thiosemicarbazone. In our earlier paper we have reported the synthesis, complexetion and analytical data of the sorbent material. It is also characterized by FAB-Mass, IR-spectra, UV-Vis spectroscopy an...

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