نتایج جستجو برای: Vanadyl sensor

تعداد نتایج: 189321  

Journal: :journal of physical & theoretical chemistry 2007
masoud giahi mohammad ali bagherinia azin azari

sol-gel and polymeric membrane electrodes, based on thiacalix[4]arene as a neutral carrier, weresuccessfully developed for the detection of vo2+ in aqueous solutions. the sol-gel and pvcmembrane electrodes exhibited linear response with nernstian slopes of 29.3 and 28.4 mv perdecade, respectively, within the vanadyl ion concentration ranges from 1.0 × 10-6 to 1.0 × 10-1mol dm-3 and from 1.0 × 1...

Journal: :Hypertension 1994
S Bhanot J H McNeill

Spontaneously hypertensive rats (SHR) are hyperinsulinemic compared with their Wistar-Kyoto (WKY) controls. Since previous studies have demonstrated that vanadyl sulfate lowers insulin levels in nondiabetic rats, we used vanadyl to explore the relation between hyperinsulinemia and hypertension. In a prevention study, 5-week-old SHR and WKY rats were started on long-term vanadyl sulfate treatmen...

Carbon paste electrode was modified by disodium 2,4-diamino-7-methylbenzo[g] pteridine-5,10-dioxide to fabricate a sensor for potentiometric determination of vanadyl ion (VO2+) in aqueous medium. The new ligand was synthesized in three steps with high yield. The optimal composition of the carbon paste was made of graphite powder (64.5%), ionophore (16.6%), paraffin oil (17.8%), a...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
abolfazl darroudi hossein eshghi shima rezaeian mahmoud chamsaz mehdi bakavoli

carbon paste electrode was modified by disodium 2,4-diamino-7-methylbenzo[g] pteridine-5,10-dioxide to fabricate a sensor for potentiometric determination of vanadyl ion (vo2+) in aqueous medium. the new ligand was synthesized in three steps with high yield. the optimal composition of the carbon paste was made of graphite powder (64.5%), ionophore (16.6%), paraffin oil (17.8%), and sodium tetra...

2016
Fatemeh Ahmadi Mehdi Nematbakhsh Mehdi Kargarfard Fatemeh Eshraghi-Jazi Ardeshir Talebi Soheila Shirdavani

INTRODUCTION Vanadium compounds are insulin like drugs which are accompanied with nephrotoxicity and hepatotoxicity as their major side effects. Aerobic exercise is well known as an approach to reduce the side effects of many drugs. OBJECTIVES This study was designed to determine the role of aerobic exercise against vanadyl sulphate induced nephrotoxicity and hepatotoxicity in male rats. MA...

2011
R. P. SINGH S. KUMAR POONAM C. KUMAR R. CHAUDHARY

The interaction of vanadyl ion with gliadin has also been studied by spectrophotometric and pH-metric methods. The nature of spectra of small ligands and liquid-polymer solution provides sufficient information about ligand-polymer interaction. Here, addition of only 0.57 × 10-4 M protein solution caused on increase in absence at a particular wavelengths. The solulder as well as the maximum abso...

2011
Areum Daseul Kim Rui Zhang Kyoung Ah Kang Ho Jin You Jin Won Hyun

Jeju ground water, containing vanadium compounds, was shown to increase glutathione (GSH) levels as determined by a colorimetric assay and confocal microscopy. To investigate whether the effects of Jeju ground water on GSH were specifically mediated by vanadium compounds, human Chang liver cells were incubated for 10 passages in media containing deionized distilled water (DDW), Jeju ground wate...

Journal: :Metallomics : integrated biometal science 2012
S Ramos J J G Moura M Aureliano

Although the number of papers about "vanadium" has doubled in the last decade, the studies about "vanadium and actin" are scarce. In the present review, the effects of vanadyl, vanadate and decavanadate on actin structure and function are compared. Decavanadate (51)V NMR signals, at -516 ppm, broadened and decreased in intensity upon actin titration, whereas no effects were observed for vanadat...

اکبرپور, وحید, زارعی, عبدالکریم, صحرارو, امیر, میرجلیلی, محمد حسین, کورچته, پیوریفیکاسیون,

Application of biotechnology for production and enhancing of important secondary metabolite by plant cell cultures and elicitors is one of the most noteworthy researches by scientists. This research was carried out with the aim of analysis the effects of Vanadyl Sulfate (abiotic elicitor) on media consumption by Satureja khuzistanica cells under suspension culture. Cells obtained after four sub...

Journal: :The Journal of biological chemistry 1989
S S Eaton J Dubach K M More G R Eaton G Thurman D R Ambruso

Copper(II) and vanadyl ions were bound to human milk lactoferrin or serum transferrin with carbonate or oxalate as the synergistic anion. Electron spin echo envelope modulation (ESEEM) due to nitrogen of a coordinated histidine imidazole was observed for both the copper and vanadyl complexes. For both metals, the modulation frequencies in the Fourier transforms of the data were similar for the ...

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