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Reliability and Validity of Korean Version of Apraxia Screen of TULIA (K-AST)
Soo Jin Kim,You-Na Yang,Jong Won Lee,Jin-Youn Lee,정은화,Bo-Ram Kim,Jongmin Lee 대한재활의학회 2016 Annals of Rehabilitation Medicine Vol.40 No.5
Objective To evaluate the reliability and validity of Korean version of AST (K-AST) as a bedside screening test of apraxia in patients with stroke for early and reliable detection.Methods AST was translated into Korean, and the translated version received authorization from the author of AST. The performances of K-AST in 26 patients (21 males, 5 females; mean age 65.42±17.31 years) with stroke (23 ischemic, 3 hemorrhagic) were videotaped. To test the reliability and validity of K-AST, the recorded performances were assessed by two physiatrists and two occupational therapists twice at a 1-week interval. The patient performances at admission in Korean version of Mini-Mental State Examination (K-MMSE), self-care and transfer categories of Functional Independence Measure (FIM), and motor praxis area of Loewenstein Occupational Therapy Cognitive Assessment, the second edition (LOTCA-II) were also evaluated. Scores of motor praxis area of LOTCA-II was used to assess the validity of K-AST.Results Inter-rater reliabilities were 0.983 (p<0.001) at the first assessment and 0.982 (p<0.001) at the second assessment. For intra-rater (test-retest) reliabilities, the values of four raters were 0.978 (p<0.001), 0.957 (p<0.001), 0.987 (p<0.001), and 0.977 (p<0.001). K-AST showed significant correlation (r=0.758, p<0.001) with motor praxis area of LOTCA-II test. K-AST also showed positive correlations with the total FIM score (r=0.694, p<0.001), the self-care category of FIM (r=0.705, p<0.001) and the transfer category of FIM (r=653, p<0.001).Conclusion K-AST is a reliable and valid test for bedside screening of apraxia.
순차적인 마이크로 몰딩 방법을 이용한 다중 분획 입자의 제조
염수진(Su-Jin Yeom),강성민(Sung-Min Kang),김종민(Jongmin Kim),남진오(Jin-Oh Nam),엄나예(Naye Eom),이소희(Sohui Lee),이창수(Chang-Soo Lee) 한국고분자학회 2016 폴리머 Vol.40 No.3
본 연구는 순차적인 마이크로 몰딩 방법을 이용한 고분자 다중 분획 입자 제조 방법에 관한 것이다. 다중 분획 입자는 poly(dimethylsiloxane)(PDMS) 마이크로 몰드 내로 단량체 혼합물의 주입, 휘발성 용매의 증발, 광중합으로 이루어지는 일련의 과정을 통해 제조한다. 이때, 단량체 혼합물에 포함된 휘발성 용매의 농도에 따라, 다중 분획입자를 구성하는 각 구획의 부피분율을 제어하는 것이 가능하다. 또한 단량체 혼합물의 농도 및 다중 분획 입자 제조공정의 반복횟수에 따라, 단일 입자, 이중 입자, 삼중 입자를 선택적으로 제조가 가능함을 보여준다. 제조한 각각의 다중 분획 입자에 형광염료를 함입하여 특정한 정보를 인코딩한 바코드 입자로써의 활용 가능성을 증명한다. 본 연구에서 제안하는 다중 분획 입자를 제조하기 위한 순차적인 마이크로 몰딩 방법은 쉽고, 빠르며, 고가의 장비를 필요로 하지 않는 장점을 가지며, 제조된 다중 분획 입자는 약물 저장 및 전달 소재, 바이오 센서, 그리고 선택적인 흡착-탈착을 유도할 수 있는 고감도 기능성 재료로서 응용이 가능할 것으로 기대한다. In this paper, we present a fabrication method of polymeric multicompartment particles via a sequential micromolding process composed of injection of photocurable solution, evaporation of volatile solvent, and photo-polymerization. Depending on the concentration of volatile solvent in photocurable solution, the volume fraction of the multicompartment particles can be controlled. Also, the repetition of the sequential micromolding process with controlled composition of photocurable solution provides controlling the number of compartment in the particles. Based on this principle, we can fabricate single particles, Janus particles and triblock particles with desired fraction of the compartment. In addition, the multicompartment particles are able to be applicable for barcode particles embedding fluorescent dyes at each compartment. The barcode particles encode information about their specific compositions and enable simple identification. These sequential micromolding method for multicompartment particles has several advantages including easy, fast, and cost effective process. We envision that the multicompartment particles have various applications such as drug storage, delivery supporters, biosensors, and advanced materials for inducing highly selective adsorption-desorption.
Water-soluble thin film transistors and circuits based on amorphous indium-gallium-zinc oxide.
Jin, Sung Hun,Kang, Seung-Kyun,Cho, In-Tak,Han, Sang Youn,Chung, Ha Uk,Lee, Dong Joon,Shin, Jongmin,Baek, Geun Woo,Kim, Tae-il,Lee, Jong-Ho,Rogers, John A American Chemical Society 2015 ACS APPLIED MATERIALS & INTERFACES Vol.7 No.15
<P>This paper presents device designs, circuit demonstrations, and dissolution kinetics for amorphous indium-gallium-zinc oxide (a-IGZO) thin film transistors (TFTs) comprised completely of water-soluble materials, including SiNx, SiOx, molybdenum, and poly(vinyl alcohol) (PVA). Collections of these types of physically transient a-IGZO TFTs and 5-stage ring oscillators (ROs), constructed with them, show field effect mobilities (10 cm2/Vs), on/off ratios (210(6)), subthreshold slopes (220 mV/dec), Ohmic contact properties, and oscillation frequency of 5.67 kHz at supply voltages of 19 V, all comparable to otherwise similar devices constructed in conventional ways with standard, nontransient materials. Studies of dissolution kinetics for a-IGZO films in deionized water, bovine serum, and phosphate buffer saline solution provide data of relevance for the potential use of these materials and this technology in temporary biomedical implants.</P>
Jongmin Sim*,Hannah Lois Kangleon-Tan*,Ji Young You,Eun-Shin Lee,Haemin Lee,Sun Moon Yang,Min-Ki Seong,Eun Hwa Park,Seok Jin Nam,박민호,Seokwon Lee,Woo-Chan Park,Rogelio G. Kangleon Jr,Crisostomo B. Dy,S 대한외과학회 2022 Annals of Surgical Treatment and Research(ASRT) Vol.103 No.6
Purpose: Although adjuvant chemotherapy (CTx) is still recommended for high-risk patients with hormone receptorpositive and human epidermal receptor (HER)-2-negative breast cancer, recent studies found that selected patients with low disease burden may be spared from CTx and receive hormonal treatment (HT) alone. This study aims to evaluate the trends of treatment (CTx + HT vs. HT alone) in Korea and to assess the impact on overall survival (OS) according to treatment pattern. Methods: The Korean Breast Cancer Society Registry was queried (2000 to 2018) for women with pT1-2N0-1 hormone receptor-positive and HER2-negative disease who underwent surgery and adjuvant systemic treatment (CTx and HT). Clinicopathologic factors, change in pattern of treatment over time, and OS for each treatment option were analyzed. Results: A total of 40,938 women were included in the study; 20,880 (51.0%) received CTx + HT, while 20,058 (49.0%) received HT only. In recent years, there has been a steady increase in the use of HT alone, from 21.0% (2000) to 64.6% (2018). In Cox regression analysis, age, type of breast and axillary operations, T and N stages, body mass index, histologic grade, and presence of lymphovascular invasion were prognostic indicators for OS. There was no significant difference between CTx + HT and HT alone in terms of OS (P = 0.126). Conclusion: Over the years, there has been a shift from CTx + HT to HT alone without a significant difference in OS. Therefore, HT alone could be a safe treatment option in selected patients, even those with T2N1 disease.
Jongmin Shin,Tae-Seong Roh,Hyoung Jin Lee 한국추진공학회 2022 Journal of Propulsion and Energy Vol.3 No.1
The heat transfer phenomenon of a liquid rocket engine has been studied using various equations for heat transfer coefficients. The heat transfer coefficient can be calculated using Prandtl-Taylor analogy and Bartz’s empirical equation, and its variations. Through 1D analysis of a liquid rocket engine with a regenerative cooling jacket, the effects of heat transfer coefficients with various semi-empirical equations were analyzed. The difference in heat transfer coefficient affects the heat transfer such as heat flux, gas-side wall temperature, pressure of coolant, and temperature of the coolant. The analysis results were compared to the result by CFD simulation to evaluate the characteristics of semi-empirical equations. The results showed that the heat transfer of a nozzle with regenerative cooling jacket could be simulated well through 1D cooling channel analysis. In addition, the modified Bartz equation showed the best result among various empirical equations.
( Jongmin Lee ),( Young Kyoon Kim ),( Ye Young Seo ),( Eun Kyoung Choi ),( Dong Soo Lee ),( Yeon Sil Kim ),( Sook Hee Hong ),( Jin Hyoung Kang ),( Kyo Young Lee ),( Jae Kil Park ),( Sook Whan Sung ),( 대한결핵 및 호흡기학회 2018 Tuberculosis and Respiratory Diseases Vol.81 No.4
Background: Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a standard procedure to evaluate suspicious lymph node involvement of lung cancer because computed tomography (CT) and <sup>18</sup>F-fluorodeoxyglucose positron emission tomography-CT (PET-CT) have limitations in their sensitivity and specificity. There are a number of benign causes of false positive lymph node such as anthracosis or anthracofibrosis, pneumoconiosis, old or active tuberculosis, interstitial lung disease, and other infectious conditions including pneumonia. The purpose of this study was to evaluate possible causes of false positive lymph node detected in chest CT or PET-CT. Methods: Two hundred forty-seven patients who were initially diagnosed with lung cancer between May 2009 and December 2012, and underwent EBUS-TBNA to confirm suspicious lymph node involvement by chest CT or PET-CT were analyzed for the study. Results: Of 247 cases, EBUS-TBNA confirmed malignancy in at least one lymph node in 189. The remaining 58 patients whose EBUS-TBNA results were negative were analyzed. Age ≥65, squamous cell carcinoma as the histologic type, and pneumoconiosis were related with false-positive lymph node involvement on imaging studies such as chest CT and PET-CT. Conclusion: These findings suggest that lung cancer staging should be done more carefully when a patient has clinically benign lymph node characteristics including older age, squamous cell carcinoma, and benign lung conditions.