نتایج جستجو برای: vanadium loading

تعداد نتایج: 84124  

2011
Liyu Li Soowhan Kim Wei Wang M. Vijayakumar Zimin Nie Baowei Chen Jianlu Zhang Guanguang Xia Jianzhi Hu Gordon Graff Jun Liu Zhenguo Yang

The all-vanadium redox fl ow battery is a promising technology for large-scale renewable and grid energy storage, but is limited by the low energy density and poor stability of the vanadium electrolyte solutions. A new vanadium redox fl ow battery with a signifi cant improvement over the current technology is reported in this paper. This battery uses sulfate-chloride mixed electrolytes, which a...

2003
I. MANNAZZU

The study of the effects exerted by vanadium on living systems has recently became an object of growing interest. In fact, the possibility to develop vanadium as a new drug in the treatment of diabetes and cancer calls for the individuation of the cellular vanadate-sensitive targets. Moreover, the fact that vanadium can be an environmental pollutant in urban and industrial areas, as a consequen...

2001
Hiroyuki Yasui Toshikazu Takino Jun Fugono Rieko Hirunuma Shuichi Enomoto Hiromu Sakurai

Because vanadium ions such as vanadyl (VO) and vanadate (VO3−) ions were demonstrated to normalize blood glucose levels of diabetic animals and patients, the action mechanism of vanadium treatment has been of interest. In this study, we focused on understanding interactions among trace elements in diabetic rats, in which a multitracer technique was used. The effects of vanadyl sulfate (VS)-trea...

Journal: :Talanta 2000
J Gao X Zhang W Yang B Zhao J Hou J Kang

A simple and sensitive kinetic-spectrophotometric method is described for the determination of vanadium and the possible mechanism of catalytic reaction is proposed. The method is based on the vanadium(V)-catalyzed oxidation of 1,8-diaminonaphthalene (DNA) by potassium bromate (Tiron as activator) at pH 3.8 and 40 degrees C. The reaction was monitored spectrophotometrically by measuring the inc...

2014
Ana Lorena Alvarado-Gámez María Asunción Alonso-Lomillo Olga Domínguez-Renedo María Julia Arcos-Martínez

A chronoamperometric method for vanadium ion determination, based on the inhibition of the enzyme alkaline phosphatase, is reported. Screen-printed carbon electrodes modified with gold nanoparticles were used as transducers for the immobilization of the enzyme. The enzymatic activity over 4-nitrophenyl phosphate sodium salt is affected by vanadium ions, which results in a decrease in the chrono...

Background & Aims: Diabetes mellitus is associated with changes in testicular tissue. Here, the effects of co-administration of zinc and vanadium sulfate on testicular damage in diabetic animals were studied. Materials & Methods:  Moderate diabetic hyperglycemia was induced by injection of streptozotocin (STZ) 40 mg/kg, ip. Five groups of animals were selected (n=5). Group I: As no...

2004
JC Skou JG Norby J. P. Beilby

CLINICALCHEMISTRY,Vol. 30, No. 10, 1984 1703 13. Cornelis R, Versieck J, MesaL, et al. The ultra-trace element vanadium in human serum. Biol Trace Element Res 3, 257-263 (1981). 14. Bello-Reuss EN, Grady TP, Mazumbar DC. Serum vanadium levels in chronic renal disease. Ann Intern Med 91, 743 (1979). 15. Prost EL, Hunt DP, Walderhaug MD, et al. Vanadium compounds in relation to inhibition of sodi...

2017
Wen Luo

Sodium-ion batteries (SIBs) have received intensive attentions owing to the abundant and inexpensive sodium (Na) resource. Layered vanadium oxides are featured with various valence states and corresponding compounds, and through multi-electron reaction they are capable to deliver high Na storage capacity. The rational construction of unique structures is verified to improve their Na storage pro...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2016
Nathaniel F Brady Kannatassen Appavoo Minah Seo Joyeeta Nag Rohit P Prasankumar Richard F Haglund David J Hilton

We report on ultrafast optical investigations of the light-induced insulator-to-metal phase transition in vanadium dioxide with controlled disorder generated by substrate mismatch. These results reveal common dynamics of this optically-induced phase transition that are independent of this disorder. Above the fluence threshold for completing the transition to the rutile crystalline phase, we fin...

In this study, electronic structures of ground state of pure vanadium sub-nano clusters, Vn (n=2-5), and their interactions with small ligands for example CO and triplet O2 molecules are investigated by using density functional theory (DFT) calibration at the mPWPW91/QZVP level of theory. The favorable orientations of these ligands in interaction with pure vanadium sub-nano clusters were determ...

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