نتایج جستجو برای: electrochemical method

تعداد نتایج: 1674297  

Kolsum Qasemi Maryam Shaterian Mohammad Ali Rezvani Vahideh Shahsavandi

La2O2SO4 nanoceramic was synthesized via sol-gel method using lanthanum nitrate and thioacetamid as precursors and stearic acid as polymeric precursor. The characterization studies were conducted by X-ray diffraction, energy dispersive X-ray spectroscopy and scanning electron microscopy. The result showed that the synthesized sample belongs to monoclinic structure with the average sizes between...

ژورنال: سلامت و محیط زیست 2015
احسانی, علی, سبزی, رضا, صحت نیا, بهارک, مناف فر, رامین,

Background and Objectives: Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental contaminants in aquatic environments. These contaminants are generated through oil spills, manufactory processes, and industrial wastes or naturally through the incomplete combustion of coal, oil, gas, and wood waste. Most of these compounds are noted as carcinogenic and mutagenic. Therefore, detecti...

2015

The underpotential deposition(UPD) phenomena is very interesting not only because of its fundamental importance but also due to its noticeable growing impact on the material science. The amazing possibility of control the deposition process down to monolayer results in new kind of materials with different properties than bulk ones embracing they catalytic, electronic or magnetic properties. Exc...

Journal: :Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society 2011
Dominique Hubert Philippe Brunswick Jean-Henri Calvet Daniel Dusser Isabelle Fajac

BACKGROUND Electrochemical skin conductance measurement is an active electrophysiologic method in which incremental low direct voltage is applied on the skin. It generates a current due to reverse iontophoresis which previous studies suggested to be mostly related to chloride anion movements. As sweat chloride movements upon electric stimulation were likely to be impaired in cystic fibrosis (CF...

Journal: :Journal of the American Chemical Society 2010
Allen J Bard

This paper offers a perspective on inner-sphere heterogeneous electron-transfer reactions and electrocatalysis as it is applied to electrochemical energy conversion systems. Fundamental concepts and an overview of past approaches to studies of these types of reactions are discussed. A method for the discovery of new electrocatalysts (for example, ones for the oxygen reduction reaction) and phot...

Journal: :Chaos 2006
István Z Kiss Zoltán Kazsu Vilmos Gáspár

Experimental results are presented on successful application of delayed-feedback control algorithms for tracking unstable steady states and periodic orbits of electrochemical dissolution systems. Time-delay autosynchronization and delay optimization with a descent gradient method were applied for stationary states and periodic orbits, respectively. These tracking algorithms are utilized in cons...

Journal: :Chemical communications 2009
Huan Pang Qingyi Lu Yecheng Li Feng Gao

Nickel oxide nanotubes with great antibacterial activities, electrochemical capacitance, and magnetic properties have been synthesized through a precursor method with dimethylglyoxime as precipitant for the precursor, and the method has been developed for the synthesis of Ni/C nanorods.

Journal: :iranian journal of pharmaceutical research 0
hossein heli shiraz university of medical sciences naghmeh sattarahmady shiraz university of medical sciences

investigation of the redox properties of drugs and their determination are performed by electrochemical techniques. data obtained from electrochemical techniques are often correlated with molecular structure and pharmacological activity of drugs. in this regard, different modified electrodes were applied as sensors for quantification of different drugs.a nanocomposite of reduced graphene oxide-...

Journal: :Journal of colloid and interface science 2007
Kazutomo Kurogi Hu Yan Hiroyuki Mayama Kaoru Tsujii

We present electrochemical synthesis of super water-repellent poly(alkylpyrrole) films which exhibit excellent environmental stability in terms of contact angle (>150 degrees ) for water. The poly(alkylpyrrole) films synthesized under an optimized electrochemical condition consisted of thousands of micro-scaled 'needles' which densely aligned by shoulder to shoulder. The surface of the aligned ...

Journal: :Physical review letters 2007
G S Karlberg T F Jaramillo E Skúlason J Rossmeisl T Bligaard J K Nørskov

Cyclic voltammetry is a fundamental experimental method for characterizing electrochemical surfaces. Despite its wide use, a way to quantitatively and directly relate cyclic voltammetry to ab initio calculations has been lacking. We derive the cyclic voltammogram for H on Pt(111) and Pt(100), based solely on density functional theory calculations and standard molecular tables. By relating the g...

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