Frumkin correction of corrosion electric field generated by 921A-B10 galvanic couple
Publication date: Available online 9 November 2019Source: Journal of Electroanalytical ChemistryAuthor(s): Qinglin Xu, Xiangjun Wang, Chong XuAbstractIn order to study the Frumkin correction effect of corrosion electric field generated by 921A-B10 galvanic couple in different concentrations of NaCl solution, the electric double layer (EDL) capacitance of 921A steel and B10 copper alloy at the galvanic potential was acquired by electrochemical impedance spectroscopy (EIS), which was calculated for the experimental value of diffuse layer potential. The theoretical value of diffuse layer potential was got by the theoretical relationship between the diffuse layer potential and the total potential difference of EDL and concentration of supporting electrolyte. According to the Frumkin correction theory, the modified Tafel equation related to diffuse layer potential was obtained. Furthermore, the uncorrected and corrected Tafel equation was used as the boundary condition of the boundary element model (BEM) of corrosion electric field for 921A-B10 galvanic couple, thus the corrosion electric field distribution before and after Frumkin correction was obtained and compared with the experimental results. The results show that the correction effect is 35.6% and 8.8% when the concentration of NaCl is 0.012 M and 0.6 M, respectively. Therefore, it is necessary to correct the Tafel boundary condition during simulation, especially under low electrolyte concentration. The Frumkin correcti...
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Publication date: Available online 6 December 2019Source: Journal of American Association for Pediatric Ophthalmology and StrabismusAuthor(s): Weiyi Xia, Wen Wen, Xiying Wang, Chao Jiang, Lianqun Wu, Ling Ling, Jing Yao, Chen Zhao
Publication date: Available online 6 December 2019Source: Journal of American Association for Pediatric Ophthalmology and StrabismusAuthor(s): Peter Daniel, Martin Cogen
Publication date: Available online 7 December 2019Source: Case Reports in Women's HealthAuthor(s): Gordon Narayansingh, Jennifer HohAbstractAbdominal pain following in vitro fertilization (IVF) in the presence of enlarged ovaries commonly leads to the diagnosis of ovarian hyperstimulation syndrome (OHSS). Progressively worsening pain with a rise in inflammatory markers with normal hematological indices implies a diagnosis of ovarian torsion of the hyperstimulated ovary. Early recourse to laparoscopic assessment and derotation of the affected ovary even after 72 h following the onset of symptoms can allow a return to viab...
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