The adsorption behavior of Benzimidazol-2-one (Bz), 5-Methylbenzimidazol-2-one(CH3Bz) and 5-Chlorobenzimidazol-2-one (ClBz) as inhibitors for mild steel corrosion in HCl 1M have been studied computationally using density functional theory (DFT) calculations with the hybrid B3LYP functional. The calculations were focused on the protonated forms of the molecules under study, seeing tha...

The inhibition performances of nafcillin (III), methicillin (II) and penicillin G (I) on the corrosion of copper in HCl was studied and tested by weight loss, Tafel polarization, SEM, UV-vis spectrophotometry, molecular dynamics method and quantum chemical calculations. Polarization curves indicated that the studied inhibitors act as mixed-type inhibitors. The values of inhibition efficiency an...

seven stilbenes and one catechin were bioactivity-guidedly isolated from the rhizomes of rheum palmatem. their structures were identified as piceatannol(1), resveratrol(2), piceid(3), rhapontigenin(4), piceatannol-3'-o-β-d-glucopyranoside(5), rhaponticin(6), catechin(7) and desoxyrhapontigenin(8). anti-monoamine oxidase (mao) activities of compounds 1–8 were tested. compounds 1 and 8 showe...

to develop a new more accurate spectrophotometric method for detecting monoamine oxidase inhibitors from plant extracts, a series of amine substrates were selected and their ability to be oxidized by monoamine oxidase was evaluated by the hplc method and a new substrate was used to develop a peroxidase-linked spectrophotometric assay. 4-(trifluoromethyl) benzylamine (11) was proved to be an exc...

pyridostigmine bromide (pb) is a reversible cholinesterase inhibitor. the aim of this study was to determine the effect of orally administration of single dose sustained-released tablet of pyridostigmine bromide (pbsr) on the frequency domain indices of heart rate variability (hrv). thirty-two healthy young men were participated in this study. they were divided into 2 groups; the pyridostigmine...

background helicobacter pylori diagnostic tests can be affected by different interventional factors. we studied the effects of smoking, proton pump inhibitors (ppis) and antibiotic administration on results of the bacterial culture, and its diagnosis tests due to polymerase chain reaction (pcr) and rapid urease test (rut) methods. objectives this study was aimed to investigate the undesirable e...

binary logistic regression (blr) has been developed as non-linear models to establish quantitative structure- activity relationships (qsar) between structural descriptors and biochemical activity of carbonic anhydrase inhibitors. using a training set consisted of 21 compounds with known ki values, the model was trained and tested to solve two-class problems as active or inactive on the basis of...

in this study, we investigated the interactive effects of intraperitoneal (i.p.) injections of three different phosphodiesterase inhibitors (pdeis) on morphine-induced analgesia in mice using tail-flick method. subcutaneous administration of morphine (1, 3 and 6 mg/kg) caused significant antinociceptive effects in a dose dependent manner. administration of pentoxifylline (12.5, 25, 50 and 100 m...

Inhibition performances of imidazoline derivatives with different alkyl chain length for carbon steel in H2S acid solutions has been studied by polarization curves, AC impedance measurements, current transient, Atomic Force Microscopy (AFM) and Density Functional Theory (DFT) techniques. Results showed that the inhibition occurs through adsorption of the inhibitors molecules ...