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40 results on '"Baek, Sujin"'

9. Intraoperative changes in upper extremity perfusion index after thoracic paravertebral and intertransverse process block in patients undergoing lung resection surgery

Author

Oh, Chahyun, primary, Lee, Sun Yeul, additional, Lee, Soomin, additional, Lee, Jiyong, additional, Baek, Sujin, additional, Shin, Myungjong, additional, Chong, Yooyoung, additional, Kang, Min-Woong, additional, Lim, Chaeseong, additional, Han, Sung Joon, additional, and Hong, Boohwi, additional

Published
2023
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31. Age-related differences in diabetes care outcomes in Korea : a retrospective cohort study

Author

Ki, Myung, Baek, Sujin, Yun, Young-Duk, Kim, Namhoon, Hyde, Martin, Na, Baegju, Ki, Myung, Baek, Sujin, Yun, Young-Duk, Kim, Namhoon, Hyde, Martin, and Na, Baegju

Abstract

Background: Age-related differences in diabetes outcomes are important both for clinical and policy considerations. To clarify the basis of such differences, we investigated patterns of associations for age in relation to hospitalization and glycemic control and examined the role of other factors. Methods: 4471 patients with diabetes aged 40-79 years were drawn from a retrospectively retrieved National Health Insurance Cohort. Using logistic regression, risk factors measured over the two years (2007-2008) were examined for their associations with hospitalization and poor glycemic control during the last year (2009) of follow-up. Results: Compared to the middle-aged patients, older patients were more likely to have been hospitalized (Adjusted odds ratio (ORadjusted) = 1.97(95% CI = 1.28, 3.04) for the oldest group (ages 70-79) vs youngest group (ages 40-49)) but less likely to have poor glycemic control (ORadjusted = 0.45 (95% CI = 0.37, 0.56) for the oldest group vs youngest group). Older patients were also less likely to be obese but had more complications, longer duration of diabetes, lower continuity of care, and higher blood pressure and total cholesterol level. The pattern of associations for hospitalization and glycemic control was not uniform across the risk factors, sharing only a few common factors such as the duration of diabetes and blood pressure. In general, poor glycemic control was affected predominantly by metabolic management, while hospitalization was strongly related to functional status (i.e., number of complications) and care quality measures (i.e., continuity of care). Conclusion: Hospitalization was higher among the older diabetic patients, despite better glycemic control. Factors were differently associated with the two diabetes-related outcomes, providing more comprehensive risk profiles for hospitalization. The co-existence of improved glycemic control and increased hospitalization among older diabetic patients suggests an extension of a ge, AuthorCount:6

Published
2014
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37. Liquid phase deposition of amorphous In2S3 nanorods: Effect of annealing on phase change

Author

Lee, Wonjoo, Baek, SuJin, Mane, R.S., Todkar, V.V., Egorova, Olga, Chae, Won-Seok, Lee, Soo-Hyoung, and Han, Sung-Hwan

Subjects
*INDIUM compounds, *THIN films, *AMORPHOUS substances, *X-ray diffraction, *NANOCRYSTALS, *ANNEALING of crystals
Abstract

Abstract: The indium sulfide (In2S3) nanorods thin films were prepared by wet chemical process. The films were sintered in air atmosphere from 523 to 673K for 10min. The chemically deposited In2S3 nanorods thin films were characterized by structural and optical techniques. Effect of annealing revealed change in phase from an amorphous In2S3 to nanocrystalline In2O3 (without changing nanorod morphology) was reflected from enhanced absorbance due to the crystallinity improvement, and then decreased due to the phase change. [Copyright &y& Elsevier]

Published
2009
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38. Intraoperative changes in upper extremity perfusion index after thoracic paravertebral and intertransverse process block in patients undergoing lung resection surgery.

Author

Oh C, Lee SY, Lee S, Lee J, Baek S, Shin M, Chong Y, Kang MW, Lim C, Han SJ, and Hong B

Abstract

Background: Perfusion index (PI) has been used as a surrogate marker of sympathetic blockade. This study evaluated changes in PI of bilateral upper extremity after thoracic paravertebral block (PVB) and intertransverse process block (ITPB)., Methods: This pilot study included three groups of patients undergoing elective unilateral pulmonary resection under general anesthesia with PVB (n=11) or ITPB (n=10), or urologic procedures with general anesthesia (control group, n=10). Blockades were performed using 10 mL aliquots of 0.5% ropivacaine administered at T3-4, T5-6, and T7-8 intercostal levels immediately after general anesthesia induction. The PI value of the operating side (PI-O) was divided by the contralateral side (PI-CL), and the relative change to baseline was assessed (relative PI-O/PI-CL), with a 50% increase considered meaningful., Results: In all cases within the PVB and ITPB groups, a significant increase in PI was observed following the blockades. The median (1Q, 3Q) intraoperative relative PI-O/PI-CL values were 0.9 (0.8, 1.4), 2.1 (1.4, 2.5), and 1.4 (0.9, 1.9) in the control, PVB, and ITPB groups (P=0.01), respectively. Pairwise comparison revealed a significant difference only between the control and PVB groups (adjusted P=0.01). While the relative PI-O/PI-CL value in the control group generally remained close to 1, occasional fluctuations exceeding 1.5 were noted., Conclusions: PVB induced a noticeable unilateral increase in upper extremity PI, whereas ITPB tended to result in an inconsistent and lesser degree of increase. Monitoring PI values can serve as an indicator of upper extremity sympathetic blockade, but consideration of potential confounders impacting these observations during surgery is essential. Further research is needed to validate these findings., Competing Interests: Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at https://jtd.amegroups.com/article/view/10.21037/jtd-24-69/coif). The authors have no conflicts of interest to declare., (2024 Journal of Thoracic Disease. All rights reserved.)

Published
2024
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39. Enhanced photocurrent in the RuL2(NCS)2/ di-(3-aminopropyl)-viologen/Au nanoparticles/ITO system: use of Au nanoparticles for retardation of the back electron transfer reaction.

Author

Lee W, Mini SK, Cai G, Hwang Y, Baek S, Cho BW, Lee SH, and Han SH

Abstract

This paper reports the use of Au nanoparticles (NPs) as electron transfer bridge layers to improve the photocurrent of viologen/Ru complex-based photoelectrochemical cells. The Ru complex/ viologen/Au NPs on electrodes were prepared using self-assembled monolayers. The cell system showed an excellent photocurrent of 25 nA/cm2 under the 1.5 air mass condition (I = 100 mW/cm2), which is five times greater than Au NPs due to the reduced recombination reaction.

Published
2009
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40. Improvement of device efficiency by phosphorescent materials in polymers bulk heterojunction solar cells.

Author

Kim YS, Baek S, Lee W, Lee Y, Han SH, Lee C, Lee YS, and Lee SH

Abstract

To improve the performance of organic solar cells, various methods have been used to increase the light absorbance and electron transfer efficiency or decrease the internal resistance of the device. In this article, red dyes of phosphorescent materials are used to improve the performance of bulk heterojunction organic solar cells based on MDMO-PPV and PCBM. Solar cell devices doped with different red dyes showed higher performances in terms of current, voltage and conversion efficiency than those without red dyes. The efficiency was maximized in the devices with a 10% concentration of red dye 2, which was attributed to the longer exciton lifetimes that were induced by the triplet spin state of the red dyes allowing them to reach the p-n junction and thereby generate more photocurrent.

Published
2009
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