Comparison of Anterior Segment Optical Tomography Parameters Measured Using a Semi-Automatic Software to Standard Clinical Instruments

10.1371/journal.pone.0065559PLoS ONE86

Electrochemical synthesis of polyaniline on mild steel in acetonitrile-LiClO4 and corrosion performance

WOS: 000224035500036Polyaniline film could not be obtained on mild steel by direct electrooxidation of aniline in LiClO4 containing acetonitrile medium (ACN-LiClO4), because sufficient passivity of the surface could not be provided. This non-passivated metal undergoes intense dissolution, in potential region at which the monomer oxidation happens and this event prevents the formation of stable polymer film on the surface. Therefore, the electrode surface was coated with very thin polyaniline (PANi), polypyrrole (PPy) primer coatings, in monomer containing aqueous oxalic acid solution, and then the synthesis of top PANi film was achieved in aniline containing ACN-LiClO4 successfully. The corrosion behavior of PANi/PANi and PPy/PANi coated MS samples were investigated in 3.5% NaCl solution, properly. For this aim, anodic polarization curves and open circuit potential-time (E-ocp-t) variation and electrochemical impedance spectroscopy (EIS) techniques were used. It was shown that PPy/PANi coating could provide much better protection for longer periods than PANi/PANi coating against the corrosion of MS. This behavior was explained with better barrier property of PPy/PANi. After 240 h of immersion time in corrosive test solution, the protection efficiency value was 97.0%, for PPy/PANi coated electrode. (C) 2004 Elsevier B.V. All rights reserved

The corrosion performance of polyaniline on nickel plated mild steel (vol 242, pg 97, 2005)

WOS: 000235721800053

Caliber Alterations in Dark Adaptation

Purpose: Our aim was to evaluate the alterations of subfoveal choroidal thickness (SFCT), photoreceptor layer thickness (PRT), and retinal vessel diameter in the dark and light adaptation.Methods: Twenty-four eyes of 24 healthy volunteers (12 males, 12 females) were included in this cross-sectional and observational study. The SFCT, PRT, retinal arteriole, and venule caliber measurements were performed with spectral domain optical coherence tomography in the dark (0.0 cd/m(2)) and under light (80 cd/m(2)) adapted conditions.Results: The mean age of the participants was 30.4 4.4 years (range: 22-42). The SFCT increased statistically significantly in dark adaptation (p 0.05).Conclusions: While SFCT increased, PRT, and retinal vessel diameter did not change following transition from light to dark

idiopathic epiretinal membranes

Purpose Idiopathic and diabetic epiretinal membranes (ERMs) differ significantly in terms of macular morphology. Our aim was to compare the photoreceptor outer segment (PROS) length in diabetic and idiopathic ERMs before and after surgery.Methods Fifty-two eyes of 50 patients who underwent pars plana vitrectomy (PPV) due to idiopathic and diabetic ERMs were included in this retrospective case series. All of the patients underwent ERM and internal limiting membrane (ILM) removal. The patients had been followed up 6 months postoperatively. Spectral-domain optical coherence tomography (OCT) was used to measure the PROS length, overall PR length and central foveal thickness (CFT).Results The PROS length, overall PR length, and CFT were statistically significantly lower at all the postoperative visits when compared to preoperative values in both the idiopathic and diabetic ERM groups (P0.05). There was no relation between amount of PROS length change and visual acuity gain in both groups (P>0.05).Conclusions Postoperative change of PROS length was similar in idiopathic and diabetic ERMs. PROS length change may not be an indicator of postoperative visual acuity