http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Na Ji Eun,Kim Honsoul,Hong Sung Noh,Song Kyoung Doo,Kim Ji Eun,Kim Eun Ran,Kim Young-Ho,Chang Dong Kyung 거트앤리버 소화기연관학회협의회 2024 Gut and Liver Vol.18 No.1
Background/Aims: The newly derived simplified magnetic resonance index of activity (MARIAs) has not been verified in comparison to balloon-assisted enteroscopy (BAE) for patients with small bowel Crohn’s disease (CD). We studied the correlation of MARIAs with simple endoscopic scores for CD (SES-CD) of the ileum based on magnetic resonance enterography (MRE) and BAE in patients with small bowel CD. Methods: Fifty patients with small bowel CD who underwent BAE and MRE concurrently within 3 months from September 2020 to June 2021 were enrolled in the study. The primary outcome was the correlation between the active score of ileal SES-CD (ileal SES-CDa)/ileal SES-CD and MARIAs based on BAE and MRE. The cutoff value for MARIAs identifying endoscopically active/severe disease, defined as ileal SES-CDa/ileal SES-CD of 5/7 or more, was analyzed. Results: Ileal SES-CDa/ileal SES-CD and MARIAs showed strong associations (R=0.76, p<0.001; R=0.78, p<0.001). The area under the receiver operating characteristic curve of MARIAs for ileal SES-CDa ≥5 and ileal SES-CD ≥7 was 0.92 (95% confidence interval, 0.88 to 0.97) and 0.92 (95% confidence interval, 0.87 to 0.97). The cutoff value of MARIAs for detecting active/severe disease was 3. A MARIAs index value of ≥3 identified ileal SES-CDa ≥5 with a sensitivity of 85% and specificity of 87% and detected ileal SES-CD ≥7 with a sensitivity of 87% and specificity of 86%. Conclusions: This study validated the applicability of MARIAs compared to BAE-based ileal SES-CDa/SES-CD.
( Kyoung Soo Park ),( Yoon Hee Chang ),( Kyung Doo Na ),( Sa Min Hong ),( Sueng Han Han ) 대한안과학회 2008 Korean Journal of Ophthalmology Vol.22 No.1
Purpose: To evaluate the outcome of the part-time occlusion therapy with near activities in monocular amblyopic patients according to gender, age, severity of amblyopia, and the cause of amblyopia. Methods: Fifty eight patients who were prescribed part-time occlusion therapy with near activity from July 1998 to October 2004, were included in this retrospective study. All patients were divided into groups by gender, age, severity of amblyopia, and the cause of amblyopia. Main outcome measures were best corrected visual acuity, line improvement, and success rate. Results: At the end of patch therapy, visual acuity improved from baseline by an average of 3.2±2.5 lines (0.33±0.26 log MAR), and follow-up period was 19.71±14.61 months (1.62±1.20 years). At the last follow-up, visual acuity improved from baseline by an average of 3.7±2.4 lines (0.38±0.26 log MAR), and follow-up period was 37.41±25.83 months (3.08±2.12 years). The success rate was 86% (50 patients) at the end of patch therapy. In 44 patients out of 50 patients (88%), the visual acuity was maintained. While 43 patients out of 47 patients who were less than 7 years old (91%) achieved success, 7 patients out of 11 patients 7 years or older (64%) achieved success (p=0.035). Conclusions: Six-hour part-time occlusion treatment combined with near activities appears to be favorable in treating 58 children during follow-up of mean 3.08 years. The significant factor was the age at initial treatment. Korean Journal of Ophthalmology 22(1):26-31, 2008
Enhanced anti-scratch performance of nanopatterned anti-reflective polymer films
Yeo, Na Eun,Cho, Won Kyoung,Kim, Doo-In,Jeong, Myung Yung Elsevier 2018 APPLIED SURFACE SCIENCE - Vol.458 No.-
<P><B>Abstract</B></P> <P>A heat treatment process was proposed to enhance the anti-scratch performance of nanostructured anti-reflection (AR) PMMA films fabricated by thermal nanoimprint lithography (t-NIL). Nanostructured AR films were fabricated using the high-temperature/high-pressure flat pressing (FP) to control free volume and rapid cooling (RC) to induce a compressive residual stress, which are compatible with t-NIL. The effects of the heat treatment process on the optical and the mechanical properties of the nanostructured films were examined by evaluating the optical properties, such as reflectance and transmittance, and measuring the mechanical properties with a pencil hardness test and a nanoindentation. It was found that the anti-scratch performance of the film was significantly improved while the optical properties are degraded slightly by a combination of FP and RC processes. It was further confirmed that the enhanced anti-scratch performance is due to the improved elastic modulus of the film by the optimized sequence of the process consisting of FP, RC and t-NIL. The enhanced anti-scratch performance is attributed to the compressive residual stress on the surface and the minimization of the unevenly distributed free volume in the polymer film.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The flat pressing and quick cooling were proposed to enhance the fracture toughness. </LI> <LI> The elastic modulus and the fracture toughness were improved by the FP and RC process. </LI> <LI> The residual stress results in the improved elastic modulus of the treated film. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>The reflectance of the anti-reflective polymer films prepared by various thermal imprint process (a) and the effects of heat treatments on the mechanical properties (b).</P> <P>[DISPLAY OMISSION]</P>
나현석(Hyeonseok Na),김두환(Doo-Hwan Kim),조경록(Kyoung-Rok Cho) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6
In this paper, we analyze propagation delay of TSV (through silicon via) that is an interconnection technology for the 3-D (threedimensional) chip stacking. We propose an electrical model for TSV considering copper(Cu) in the inner TSV, SiO₂ around TSV, pads to connect the each layer and a buffer for input signal. The propagation delay variation on TSV is simulated with parameters as diameter of TSV, the number of stacking layer, fan-out and number of buffers under 0.35㎛ CMOS process.
Improved conversion efficiency of amorphous Si solar cells using a mesoporous ZnO pattern
Go, Bit-Na,Kim, Yang Doo,suk Oh, Kyoung,Kim, Chaehyun,Choi, Hak-Jong,Lee, Heon Springer 2014 NANOSCALE RESEARCH LETTERS Vol.9 No.1
<P>To provide a front transparent electrode for use in highly efficient hydrogenated amorphous silicon (a-Si:H) thin-film solar cells, porous flat layer and micro-patterns of zinc oxide (ZnO) nanoparticle (NP) layers were prepared through ultraviolet nanoimprint lithography (UV-NIL) and deposited on Al-doped ZnO (AZO) layers. Through this, it was found that a porous micro-pattern of ZnO NPs dispersed in resin can optimize the light-trapping pattern, with the efficiency of solar cells based on patterned or flat mesoporous ZnO layers increased by 27% and 12%, respectively.</P>