Improvements of phosphorescent white OLEDs performance for lighting application.

Lee, Jonghee,Chu, Hye Yong,Lee, Jeong-Ik,Song, Ki-Im,Lee, Su Jin American Scientific Publishers 2008 Journal of Nanoscience and Nanotechnology Vol.8 No.10

<P>We developed white OLED device with high power efficiency, in which blue and orange phosphorescent emitters were used. By introduction of multi-functional interlayer which has partial doping of orange dopant inside EBL, we report WOLEDs with peak external efficiencies up to (14.1% EQE, 31.3 Im/W) without light out-coupling technique. At 1000 cd/m2, the performance achieved was 11.9% EQE, 18.7 Im/W with CIE = (0.39, 0.44). We also found that WOLED performances are related with doping ratio of the orange dopant that was inserted inside EBL.</P>

한국형 지하주차장 PC공법(MRS공법)의 개발 및 적용

임주혁(Im, Chu Hyuk),문정호(Mun, Jung Ho),오영훈(Oh, Yong Hun),김용남(Kim, Yong Nam),최익준(Choi, Ik Jun) 한국콘크리트학회 2009 한국콘크리트학회 학술대회 논문집 Vol.2009 No.11

한국 수학 교과서와 미국 CMP 교과서의 비교,분석 -중학교의 방정식과 함수 단원을 중심으로-

추재임 ( Jae Im Chu ),이종학 ( Jong Hak Lee ),김원경 ( Won Kyung Kim ) 한국수학교육학회 2013 수학교육 Vol.52 No.1

Sun Ginseng Protects Endothelial Progenitor Cells From Senescence Associated Apoptosis

Im, Woo-Seok,Chung, Jin-Young,Bhan, Jae-Jun,Lim, Ji-Yeon,Lee, Soon-Tae,Chu, Kon,Kim, Man-Ho The Korean Society of Ginseng 2012 Journal of Ginseng Research Vol.36 No.1

Endothelial progenitor cells (EPC) are a population of cells that circulate in the blood stream. They play a role in angiogenesis and, therefore, can be prognostic markers of vascular repair. Ginsenoside $Rg_3$ prevents endothelial cell apoptosis through the inhibition of the mitochondrial caspase pathway. It also affects estrogen activity, which reduces EPC senescence. Sun ginseng (SG), which is heat-processed ginseng, has a high content of ginsenosides. The purpose of this study was to investigate the protective effects of SG on senescence-associated apoptosis in EPCs. In order to isolate EPCs, mononuclear cells of human blood buffy coats were cultured and characterized by their uptake of acetylated low-density lipoprotein (acLDL) and their binding of Ulex europaeus agglutinin I (ulex-lectin). Flow cytometry with annexin-V staining was performed in order to assess early and late apoptosis. Senescence was determined by ${\beta}$-galactosidase (${\beta}$-gal) staining. Staining with 4'-6-Diamidino-2-phenylindole verified that most adherent cells (93${\pm}$2.7%) were acLDL-positive and ulex-lectin-positive. The percentage of ${\beta}$-gal-positive EPCs was decreased from 93.8${\pm}$2.0% to 62.5${\pm}$3.6% by SG treatment. A fluorescence-activated cell sorter (FACS) analysis showed that 4.9% of EPCs were late apoptotic in controls. Sun ginseng decreased the apoptotic cell population by 39% in the late stage of apoptosis from control baseline levels. In conclusion, these results show antisenescent and antiapoptotic effects of SG in human-derived EPCs, indicating that SG can enhance EPC-mediated repair mechanisms.

고대 로마 신화에 등장한 신들의 복식 연구

임상임,추미경 한국의류학회 2001 한국의류학회지 Vol.25 No.5

The costume for gods in the Ancient Roman myth was studied by examining in the embossedcarving, sculptures, mural-painting and various documents of the period. The clothes item, hairstyle, symbol & ornaments and shoes of the gods in the Roman myths were analyzed to understand the formative process in the religious costumes, and results are as follows. First, the costumes for male gods are the same as those for ordinary men lived in ages, including toga, paludamentum, tebenna, tunics. The costumes for female gods are also the same as those for ordinary women lived in ages, including stola, palla, tunics. Second, the hairstyle of male gods is short curled-hair, twisty roll-up hair and braid long-hair due to the influence of Etrurian in the early days. Another hairstyle is appeared in form of the laurelled-crown. The hairstyle of female gods is curled long-hair, chignon style and braid roll-up hair decorated with hairband. Third, the symbol & ornaments which represent the responsible possession of male gods, are appeared in beard, a stick of the message, arrow-case, offering-dish, antlered-glass, shield, spear-handle, as the superhuman forms, such as the lightning shape. For female gods they are is appeared plastron, a stick of the message, flower, some female gods wear necklace, foot-ring, bracelet. Fourth, male gods wear shoes in forms of sandal, buskin, boots, but all female gods are in barefoot. It could be explained by the fact that a man-centered society in the ancient roman is reflected in the world of gods. As mentioned, Gods' costume in Roman myths was very similar to or nothing different from the ordinary people's in Rome. However, they used corps, sacrifices or sepcific symbols depending on the fields that they were responsible for in order to be distinguished from the ordinary people. This is the result from the peoples expression that they should keep a close relationship with Gods hoping to be protected, and rely on them under whatever circumstances

Percutaneous Transhepatic Treatment of Benign Bile Duct Strictures Using Retrievable Covered Stents: Long-Term Outcomes in 148 Patients

Im Byung Soo,Gwon Dong Il,Chu Hee Ho,Kim Jin Hyoung,Ko Gi-Young,Yoon Hyun-Ki 대한영상의학회 2022 Korean Journal of Radiology Vol.23 No.9

Objective: To investigate the long-term outcomes of percutaneous treatment of benign biliary strictures using temporary placement of a retrievable expanded polytetrafluoroethylene (PTFE) covered stent. Materials and Methods: We retrospectively analyzed the outcomes of 148 patients (84 male and 64 female; age range, 11–92 years) who underwent percutaneous transhepatic placement and removal of a retrievable PTFE-covered stent for the treatment of benign biliary strictures between March 2007 and August 2019 through long-term follow-up. Ninety-two patients had treatment-naïve strictures and 56 had recurrent/refractory strictures. Results: Stent placement was technically successful in all 148 patients. The mean indwelling period of the stent was 2.4 months (median period, 2.3 months; range, 0.2–7.7 months). Stent migration, either early or late, occurred in 28 (18.9%) patients. Clinical success, defined as resolution of stricture after completing stent placement and removal, was achieved in 94.2% (131 of 139 patients). The overall complication rate was 15.5% (23 of 148 patients). During the mean follow-up of 60.2 months (median period, 52.7 months; range, 1.6–146.1 months), 37 patients had a recurrence of clinically significant strictures at 0.5–124.5 months after removal of biliary stent and catheter (median, 16.1 months). The primary patency rates at 1, 3, 5, 7, and 10 years after removal of biliary stent and catheter were 88.2%, 70.0%, 66.2%, 60.5%, and 54.5%, respectively. In the multivariable Cox proportional hazard regression analysis, sex, age, underlying disease, relation to surgery, stricture type, biliary stones, history of previous treatment, and stricture site were not significantly associated with the primary patency. Conclusion: Long-term outcomes suggest that percutaneous treatment of benign biliary strictures using temporary placement of retrievable PTFE-covered stents may be a clinically effective method.

Nuclear localization of huntingtin during spermatogenesis

Im, Wooseok,Chung, Jinyoung,Lee, Soon-Tae,Chu, Kon,Kim, Min-Wook,Kim, Manho Springer-Verlag 2014 Neurological sciences Vol.35 No.3

ON CATEGORIES OF SHORT EXACT SEQUENCES

Im, Chang Ku,Oh, Hi Jun,Jeon, Byung Mun,Chu, Chinku 忠南大學校 1968 論文集 Vol.7 No.-

Abelian Category에 있어서의 完全系列 O→A_1→A_2→O를 對象物로 하고 可換圖型 O→A_1→A_2→A_3→O ↓ ↓ ↓ 를 morphism 으로하는 Category ε에서 Kernel과 Cokerne O→B_1→B_2→B_3→O 의 存在性 및 Pullback이 되기위한 條件과 이 Category의 對象物들의 Product의 性質等에 對하여 Proposition 1로부터 9까지를 通하여 論하였음.

흉추 후방접근법으로 완전 정복된 외상성 척추앞전위증 1예 : A case report

황선철,김범태,이세영,임수빈,신원한 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

The thoracic spine is rigidly stabilized by the ribs, anterior and posterior longitudinal ligaments, and a sagittal orientation of the facet joints that resists axial rotation and horizontal translation. Thus, a significant force is required to cause a fracture and dislocation in the thoracic spine. A 32-year-old man was involved in a motor-vehicle accident and presented with complete paraplegia and spondyloptosis on the 8th thoracic vertebral segment. He also suffered with hypoxia and hypovolemic shock. Posterior reduction and fixation with pedicle screw was achieved with the anatomic alignment and rigid stability. This posterior technique for thoracic spondyloptosis is believed to be sufficient to make good alignment and solid fixation.

전기차 구매의사 영향요인에 대한 문헌 리뷰 및 실증분석: 소비자 심리적 특성 변인의 영향을 중심으로

주우진 ( Chu Wujin ),임미자 ( Im Meeja ),송미령 ( Song Mee Ryoung ) 한국소비자학회 2017 소비자학연구 Vol.28 No.6

전기차 소비 확산을 위해서는 전기차 구매에 영향을 미치는 요인은 무엇인지, 소비자들이 전기차를 어떻게 지각하고 있는 지에 대한 이해가 필요하다. 본 연구는 먼저 전기차 구매의사 영향요인에 대한 기존 문헌을 리뷰한 후에 한국 소비자들 565명을 대상으로 실증분석을 하였다. 전기차 구매에 영향을 미치는 요인, 특히 소비자의 심리적 특성의 영향 요인인 개인의 차에 대한 인식, 친환경성향, 혁신성향, 주행거리불안, 전기차에 대한 주관적 지식 수준이 구매의도에 미치는 영향을 리뷰하고 분석하였다. 실증 연구결과, 한국의 소비자들은 연령이 높을수록, 교육수준이 높을수록, 소득수준이 높을수록 전기차 구매의사가 높았으며, 성별은 유의한 차이가 없었다. 심리적 특성에서는 친환경성향이 높을수록, 혁신성향이 높을수록, 전기차에 대한 주관적으로 느끼는 지식수준이 높을수록, 전기차 구매의사가 높았다. 또한 친환경성향과 혁신성향은 높은 상관관계를 가지는 것으로 나타났다. 주행거리불안이 높을 수록 전기차 구매의사는 낮았지만, 주행거리불안이 현재 사용차량의 일일사용시간 및 연간사용량과는 무관하다는 결과를 놓고 볼 때 주행거리불안이 객관적 실체보다는 정서적 예측 오류일 수 있음을 시사한다. 본 연구는 한국 시장에서 전기차 구매의사에 영향을 미치는 심리적 특성 변수들의 영향을 분석하였다는 점에서 그 이론적 공헌이 있다. In order to increase consumption of electric cars, it is necessary to understand what factors affect the purchase of electric cars and how consumers perceive electric cars. This study first reviewed existing literature on the influence factors of electric vehicle purchase intention, and then conducted an empirical analysis of 565 Korean consumers. The effect of perception of a car’s functions, environmental concern, consumer innovativeness, range anxiety, and knowledge level on purchase intention was studied. Results of the empirical study show that age, income and education level have a positive influence on purchase intention of electric cars, while gender did not show any effect. With respect to psychological characteristics, the study reveals that environmental concern, consumer innovativeness, and knowledge on electric cars have a positive influence on the purchase intention of electric cars. Also, it was found that consumers’ environmental concern and innovativeness have high correlation. Finally, it is shown that predicted range anxiety is deemed higher when compared to the actual usage behavior, suggesting a failure of affect forecasting. This study has contributed to the theoretical contribution in analyzing the influence of psychological characteristics that affect the intention to purchase electric cars in the Korean market.