we study copper corrosion inhibition by ethanolamine (eta)with (0, 0.2 ,0.3,0.4,0.5) vol.% concentrations in 100 ppm nacl solution. this work is carried out by potentiodynamic measurements and electrochemical impedance spectroscopy (eis). the substrates' surface morphologies are examined by scanning electron microscopy (sem). etais characterized by nmr spectra of eta1h and 13c and fourier ...

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background micrornas are small and non-coding rna molecules with approximately 22 nt in length that cause inhibition of translation or degradation of mrna. mir-155 is a kind of molecule with different functions, such as its role in proliferation, apoptosis, inflammation, differentiation, and immunity. one of its best known functions is apoptosis that affects on caspase-3 activity. the main aim ...

glycosidases are the enzymes involved in various biochemical processes related to metabolic disorders and diseases. therefore, much effort has been focused on searching novel pharmacotherapy for the treatment of these ailments from medicinal plants due to higher safety margins. to pursue these efforts, the present study was performed to evaluate the α-glucosidase inhibitory activities of thirty...

the organic deposition particularly asphaltenes has many detrimental effects on the oil industries, such as plugging in pipelines, wellbore and facilities and subsequently, considerable reduction in well productivity.asphaltenes are the most polar fractions, which they have been dispersed as colloidal clusters in crude oil. the accumulation of these clusters lead to the flocculation of colloids...

The inhibitive performance of the methanol extract an eco-friendly green inhibitor Kalanchoe crenata (KC) leaves on corrosion mild steel in 5.0 M H2SO4 solution with concentrations 1 g/L, 2 3 4 g/L and 5 at temperatures 333 K 353 was studied using gravimetric (weight loss) gasometric (hydrogen evolution) techniques to determine its inhibition efficiencies as well depict mechanism inhibitor. tec...

background: inhibitory antibody to exogenous factor viii (fviii) is a major complication of hemophilia treatment. this study was conducted to determine the prevalence of inhibitor antibody directed against fviii.methods: from may 2010 to may 2011, 52 patients with severe hemophilia a admitted in amirkola children’s hospital were evaluated. those who had abnormal mixing study, antibody against f...

the idea of smart corrosion inhibition is basis on either inhibitor consumption where it is needed or reducing harmful matrix interaction with it. in addition, applying corrosion inhibitor in a coating causes many problems such as loss of inhibition capability, coating degradation, or both. a useful technique to overcome this problem is applying of inert host systems of nanometer dimensions as ...

helicobacter pylori :28 µg/ml).   (h. pylori) infection leads to different clinical and pathological outcomes in humans, including chronic gastritis, peptic ulcer disease and gastric neoplasia and even gastric cancer and its eradiation dependst upon multi-drug therapy. the most effective therapy is still unknown and prompts people to make great efforts to find better and more modern natural or ...

in our previous study, we compared the two α-amylase enzymes from bacillus sp.kr8104, bka∆(n44) and bka∆(n44c193) which is the secreted form of it. the results indicated that the presence of 193 amino acids propeptide in the c-terminal of bka∆(n44) changed its enzymatic parameters like an uncompetitive inhibitor in comparison to bka∆(n44c193). in the present study, we cloned the dna sequence of...