نتایج جستجو برای: inhibition efficiency

تعداد نتایج: 710667  

2009
J. Arockia Selvi Susai Rajendran A. John Amalraj B. Narayanasamy

The inhibition efficiency (IE) of an aqueous extract of beet root (BR) in controlling corrosion of carbon steel in well water in the absence and presence of Zn 2+ has been evaluated by mass loss method. The formulation consisting of 4 mL of BR extract and 50 ppm Zn 2+ offers 98% inhibition efficiency to carbon steel immersed in well water. A synergistic effect exists between BR extract and Zn 2...

2014
Hasan R Obayes Ghadah H Alwan Abdul Hameed MJ Alobaidy Ahmed A Al-Amiery Abdul Amir H Kadhum Abu Bakar Mohamad

BACKGROUND The majority of well-known inhibitors are organic compounds containing multiple bonds and heteroatoms, such as O, N or S, which allow adsorption onto the metal surface. These compounds can adsorb onto the metal surface and block active surface sites, reducing the rate of corrosion. RESULTS A comparative theoretical study of three benzimidazole isomers, benzimidazole (BI), 2-methylb...

2016
Chandrabhan Verma Mumtaz A. Quraishi

the Corrosion inhibition of mild steel in 1 M HCl has been investigated using three dendrimers by means of gravimetric, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, scanning electron microscopy (SEM) and energy dispersive Xray spectroscopy (EDX) techniques. Results showed that inhibition efficiency increases with increasing concentration of dendrimers. Among the s...

Journal: :Circulation research 2002
Walter F Saavedra Nazareno Paolocci Marcus E St John Michel W Skaf Garrick C Stewart Jin-Sheng Xie Robert W Harrison Joshua Zeichner Daniel Mudrick Eduardo Marbán David A Kass Joshua M Hare

Inhibition of xanthine oxidase (XO) in failing hearts improves cardiac efficiency by an unknown mechanism. We hypothesized that this energetic effect is due to reduced oxidative stress and critically depends on nitric oxide synthase (NOS) activity, reflecting a balance between generation of nitric oxide (NO) and reactive oxygen species. In dogs with pacing-induced heart failure (HF), ascorbate ...

Aesha S. Patel Nisha K. Shah Purdi T. Trivedi Vidhi A. Panchal

The inhibiting effects of some newly synthesized Schiff bases on the corrosion of Al-Pure in 1.0 M HCl have been studied by means of the chemical and electrochemical methods. The Schiff bases m-Chloroaniline-N-benzylidene (m-CANB), p-Chloroaniline–N-benzylidene (p-CANB), Benzylamine-N-(p-methoxy benzylidene) (BANPMB) and 2-Phenylethylamine-N-(p-methoxy benzylidene) (2PANPMB) were synthesized fr...

Journal: :molecular biology research communications 2013
masoomeh bagheri-kalmarzi reza h.sajedi elham asadollahi nosrat o. mahmoodi reza haji-hosseini

for the first time in the present study the effects of vanillin, vanillyl alcohol, vanillic acid, as well as the newly synthesized vanillin derivative, bis-vanillin, were investigated on the oxidation of dopamine hydrochloride by mushroom tyrosinase. among them, vanillin and bis-vanillin act as activators, while vanillyl alcohol and vanillic acid exhibited inhibitory effects, the ic50 values be...

This paper studies the corrosion inhibition of Al-Mg alloy system in 0.5 mol/dm3 NaCl solution in the presence of pyrazole derivative using potentiodynamic polarization and linear polarization method. The inhibition efficiency as a function of concentration and temperature was investigated. From the polarization curves, it can be concluded that the pyrazole derivative be...

ژورنال: روانشناسی معاصر 2013
امین زاده, انوشه, حسن آبادی, حمیدرضا,

Abstract The aim of this study was to investigate and compare the ability of Contingency Naming Test in predicting math achievement. For this purpose 80 fourth grade students with math difficulties and 80 fourth grade normal students (without math difficulties) were selected. The following tests were then administered: The Iran Key Math Test (IKMT), the Contingency Naming Test (CNT), Digit Spa...

Hafida Hanin Hamza Ouradi Hanane Boubekraoui Issam FORSAL, Yassine Elkhotfi,

Inhibitory effect of extracts from three date varieties namely khalt (kha), Lassiane (La) and Tadmamt (Td)), and the mixture of date varieties as environmentally friendly corrosion inhibitor for carbon steel in 1M HCl is studied by means of electrochemical tests such as electrochemical impedance spectroscopy (EIS), and Tafel polarization. It's been obtained that in 1.0 M HCl solution the date e...

Corrosion of metal surfaces amongst other problems is one major disaster militating against proper functioning of the oil and gas and other manufacturing industries. To therefore lessen the risk, organic corrosion inhibitors have been applied to lessen the rate of corrosion and its effects. However, materials with optimal properties, better than content that allow corrosion are used for this em...

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