http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yang, Taeseung,Choi, Sang Koo,Park, Daehwan,Lee, Yea Ram,Chung, Chan Bok,Kim, Jin Woong American Chemical Society 2016 Langmuir Vol.32 No.50
<P>This study introduces a new type of associative nanoparticle (ANP) that provides controlled chain-to-chain attraction with an associative polymer rheology modifier (APRM) to produce highly stable Pickering emulsions. The ANPs were synthesized by grafting hydrophobically modified hygroscopic zwitterionic poly(2-methacryloyloxyethyl phosphorylcholine-co-stearyl methacrylate) brushes onto 20 nm sized silica NPs via surface-mediated living radical polymerization. The ANP-stabilized Pickering emulsions show significant viscosity enhancement in the presence of the APRM. This indicates that the ANPs act as particulate concentration agents at the interface owing to their hydrophobic association with the APRM in the aqueous phase, which leads to the generation of an ANP-mediated complex colloidal film. Consequently, the described ANP-reinforced Pickering emulsion system exhibits improved resistance to pH and salinity changes. This coacervation approach is advantageous because the complex colloidal layer at the interface provides the emulsion drops with a mechanically robust barrier, thus guaranteeing the improved Pickering emulsion stability against harsh environmental factors.</P>
SAR 검보정 Site 구축을 위한 후방 산란 특성 분석
이태승 ( Taeseung Lee ),양도철 ( Dochul Yang ) 대한원격탐사학회 2021 大韓遠隔探査學會誌 Vol.37 No.2
다목적실용위성 5호의 검보정 목적으로 사용되는 몽골과 같은 해외 검보정 사이트는 유지 및 보수를 위한 비용이 많이 들고 예상치 못한 문제가 발생할 경우 즉각적인 대응이 어렵다는 단점이 있다. 이에 따라서 국내 SAR 영상 검보정 사이트 구축 필요성이 제기되었지만 관련 연구 진행은 미미한 상황이다. 본 논문에서는 SAR 검보정 사이트 구축을 위해서 후방 산란 특성 측면에서 어떤 조건들이 있는지 알아보고, 실제 운영중인 다목적실용위성 5호를 통해서 고해상도, 표준, 광역 관측과 같이 다양한 모드로 촬영한 국내 후보 지역들에 대해서 검보정 사이트로써 적합한지를 판단하였다. 먼저 국내에서 위성 영상 검보정 후보 사이트로 추천되는 장소 중에서 접근성, 가용성 등 일반적인 지표 만족여부를 적용하여 일차적으로 선별하였다. 그 다음에 비교적 넓고 AT나 CR을 설치하기 용이한 장소로써 site A (전라남도 고흥군), site B (전라북도 전주시), site C (대전광역시 대덕연구단지) 세 군데를 최종 후보 지역으로 선정하였다. 후보 지역들에 대해서 경사도 측정, 방사 정밀도의 평가 지표 중 하나인 ISLR을 구하기 위한 사이트의 최소 면적, SAR 영상에서의 DN 값 및 후방 산란 계수의 균일성, 사이트 내 인공 구조물, 건물 및 바위 등과 같은 strong reflector에 의한 간섭 여부, 설정 영역에 대한 후방 클러터 레벨 분석 등을 통해서 전라남도 고흥군에 위치한 site A 지역이 검보정 사이트로써 가장 적합하다고 판단 내릴 수 있었다. The overseas calibration sites such as Mongolia used for Korea Multi-purpose Satellite (KOMPSAT-5 or K5), have a disadvantage in that maintenance and repair costs are high and immediate response is difficult when an unexpected problem occurs. Accordingly, the necessity of establishing a domestic SAR calibration site was suggested, but the progress of related research is insignificant. In this paper, we investigated what conditions should be satisfied in terms of backscattering characteristics to construct a site for SAR satellite image quality evaluation and calibration. First of all, it was selected first by applying general indicators such as accessibility and availability among places recommended as satellite image calibration candidate sites in Korea. Next, three places, site A (Goheung-gun, Jeollanamdo), site B (Jeonju-si, Jeollabuk-do), and site C (Daedeok Research Complex, Daejeon), were selected as the final candidates because they are relatively wide and easy to install AT or CR. Site A, located in Goheung-gun, Jeollanam-do, was best considered in terms of slope measurements, minimum site area to obtain ISLR, uniformity of DN values and backscatter coefficients, interference by strong reflectors, and backscatter clutter level.
신이식 환자에서 마이코페놀레이트 병합을 통한 싸이클로스포린 감량요법의 전향적 연구결과
강진모(Jinmo Kang),박양진(Yang Jin Park),하종원(Jongwon Ha),이태승(Taeseung Lee),정중기(Jungkee Chung),김연수(Yon Su Kim),안규리(Curie Ahn),김상준(Sang Joon Kim) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.74 No.4
Purpose: Although cyclosporine (CsA) improves short-term renal graft outcomes, many paradigms reduce or withdraw this drug because of its nephrotoxicity. However, inadequate immunosuppression with azathioprine led to little success. We conducted a prospective study to define the prolonged effect of CsA reduction in stable renal transplant recipients with mycophenolate mofetil (MMF). Methods: Thirty-nine primary renal transplant recipients were divided into two cohorts, the AZA (N=13) and the MMF cohort (N=26). Both cohorts were allowed to reduce the CsA dose up to 50% of baseline within 3 to 4 months of conversion to AZA or MMF. Graft function, clinical parameters, and adverse events were monitored for up to 3 years. Results: Ccr gradually deteriorated in the AZA cohort, but was stable in the MMF cohort. There was no episode of acute rejection or graft loss observed in either cohort. Conclusion: The CsA dose can be reduced in combination with MMF treatment in stable renal transplant recipients after 2 years of transplantation, resulting in beneficial effects on Ccr, lipid profiles, and blood pressure.
의류품 유통관리용 RFID 태그 품질경쟁력 평가모델 개발
권종원(Jongwon Kwon),양일영(Ilyoung Yang),송태승(Taeseung Song),조원서(Wonseo Cho) 대한전자공학회 2015 전자공학회논문지 Vol.52 No.7
품질경쟁력지수(QCI)는 전 세계에 유통 중인 제품의 품질을 객관적으로 측정할 수 있고, 정량적으로 비교할 수 있는 지표로 정의된다. 본 논문에서는 국내외 의류품 유통관리 시장에 보급되고 있는 UHF대역 RFID 라벨 태그(전세계 ISO 18000-3C지원)의 품질경쟁력지수 산출을 위한 평가모델을 제안한다. 품질경쟁력지수 평가모델은 KS표시품 품질우수성 지수(KS-QEI)모델을 기반으로 하고, 공정능력, 내환경성, 내구성, 설계마진 총 4가지의 평가항목으로 구성된다. 품질경쟁력지수는 가중산술평균을 통해 평가항목 별 점수와 각 항목별 가중치를 각각 곱한 후 합산하는 방식으로 계산된다. 여기서 가중치는 국내외 산학연 전문가를 대상으로 AHP방식의 설문조사를 통해 결정되었다. 제안된 품질경쟁력지수는 글로벌 경쟁기업 제품과의 품질비교 결과 뿐만 아니라 이를 통해 우수한 품질의 국내 RFID 라벨 태그 정보를 제공할 수 있다. 또한 신제품을 개발하고자 하는 제조업체의 품질향상을 위해 중요한 역할을 할 것으로 기대된다. The ‘Quality Competitiveness Index’ (QCI) is defined as an quantitative and disinterested indicator that measures and compares the quality of products across the world. The purpose of this study is to suggest the ‘Quality Competitiveness Assessment Model’ (QCAM) and calculate QCI of a popular UHF RFID Label tag (Global ISO 18000-3C supported) available these days in a global apparel market. The model was based on KS-QEI(Korean Standard-Quality Excellence Index), and was composed with the following 4 evaluation categories, a process capability test, an environmental reliability test, a durability test and a design margin test. The QCI score can be calculated with the following formula, using the weighted arithmetic mean between a score of each evaluation category (X₁, X₂, X₃, X₄) and each weight(w₁, w₂, w₃, w₄). The actual weights was determined by an result of AHP survey to which was conducted for the related Industry-University-Institute experts. The proposed index shows the results of comparisons with global competitor’s products as well as the high-quality domestic RFID label tags. In addition, it will play an important role for manufacturers when developing their future products.
이진욱(Jin Wook Yi),정인목(In Mok Jung),이태승(Taeseung Lee),민승기(Seung-Kee Min),민상일(Sang Il Min),박양진(Yang Jin Park),하종원(Jongwon Ha),정중기(Jung Kee Chung),김상준(Sang Joon Kim) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.6
Purpose: Acute ischemia of the arm is uncommon compared with events in the leg and much less attention has been paid to the management of acute arterial thromboembolism of the upper extremities. The aim of this study was to evaluate the clinical aspects and treatment outcomes of acute upper extremity thromboembolism. Methods: From January 2007 to March 2010, seven patients underwent the management of upper extremity thromboembolism in three Seoul National University (SNU)-affiliated hospitals. We retrospectively reviewed the medical records. Results: The mean age was 64.6 years (range 48∼93 years) and 4 patients (57.1%) were female. Distribution of the thromboembolism were 4 in brachial, 1 in axillary plus brachial, 1 in ulnar and radial, and 1 in axillary artery, respectively. Time from symptom onset to presentation was 3.5 days (range 1∼10 days). Primary treatment modality were Fogarty catheter embolectomy in 3 cases, bypass surgery in 1 case, and urokinase thrombolysis in 2 cases. A patient without symptoms was treated conservatively. Patients receiving primary thrombolytic therapy underwent surgical approach due to recurred thromboembolism during admission. In our 11.2 months of mean follow-up, there was recurrence but 1 patient died from cerebral infarction after 1.5 year of discharge. Conclusion: In this study, functional outcome of acute upper extremity ischemia following appropriate treatments was excellent. Key features of treatment are shortening the time interval of diagnosis to primary treatment, proper anticoagulation, and treatment of underlying conditions. Larger-volume, long-term results and meta-analysis of upper extremity thromboembolism are required to establish standardized treatment in Korea.
정인목(In Mok Jung),한소리(So Rhee Han),최금희(Keum Hee Choi),권유진(Yujin Kwon),이태승(Taeseung Lee),민승기(Seung-Kee Min),박양진(Yang Jin Park),정중기(Jung Kee Chung),하종원(Jongwon Ha),김상준(Sang Joon Kim) 대한외과학회 2010 Annals of Surgical Treatment and Research(ASRT) Vol.79 No.6
Purpose: Although progenitor cells may contribute to intimal hyperplasia (IH) after arterial injury, positive contribution of IH is variable with type of injury or cells. This study was designed to examine whether differentiated muscle derived stem cells (MDSC) attenuate IH in rat. Methods: MDSCs were retrieved using preplate techniques from rat calf muscle and MDSCs (preplate 6th culture fraction, pp6) were exposed to VEGF (50 ng/㎖) for endothelial differentiation prior to injection. Male rats were divided into two groups (cell treated vs. control) and underwent carotid balloon injury with 2-Fr catheter. The virus containing Green fluorescent protein (GFP) gene was transfected into cells for monitoring. Cells (5×10?) were indwelled into carotid artery for 30 minutes after injury and then blood flow was restored. Arteries were harvested at various intervals (1, 2 and 4 weeks) after injury. The intima to media thickness ratio (IMTR) was calculated with morphometric analysis. Results: Endothelial surface markers such as VE-CADHERIN were strongly expressed on differentiated MDSCs. At 4 weeks after injury, IH was predominantly observed in control group compared to cell treated group. The intensity of GFP was strongly observed at 1 week and declined at 4 weeks in carotid artery wall at MDSC group. CD31(+) endothelial cells were observed at MDSC group compared to control. The mean IMTR in cell treated groups were significantly lower than control at 2 weeks (P=0.005) and 4 weeks (P≤0.001). Conclusion: Our study demonstrates that MDSCs therapy promotes re-endothelialization and leads to attenuation of IH after balloon injury in rat.
Establishment of the 2nd National Reference Standard for Diphtheria toxin in Korea
So Young Kim,Jinwoong Lee,Sol Jeon,Su Jung An,In yeong Hwang,Jae Hoon Moon,Jong Kwan Park,Taeseung Yang,Jaewoon Son,Daegeun Kim,Jeongwon Jang,Seulgi Park,Eun Ah Choi,Jin Kyu Kim,Jin Tae Hong,Jong Won 대한미생물학회 2021 Journal of Bacteriology and Virology Vol.51 No.1