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스마트 윈도우 응용을 위한 광 투과 조절 가능 다공성 엘라스토머 제작
신미라(Mira Shin),이영은(Youngeun Lee),김진경(Jinkyung Kim),심건우(Gun Woo Sim),엄영호(Youngho Eom),김세움(Se-Um Kim),김대석(Dae Seok Kim) 한국고분자학회 2021 폴리머 Vol.45 No.6
연구에서는 압착을 통해 투과도 조절이 가능한 다공성 실리콘 엘라스토머 필름을 제작하고 이를 기반으로 한 스마트 윈도우 응용을 제안한다. Isopropyl alcohol 수용액이 Ecoflex 전구체와 상분리가 되는 것을 이용해 Ecoflex 몸체에 다공성 구조를 가진 필름을 제작하였다. 수백 nm에서 수십 μm 크기의 기공이 Ecoflex 몸체와 굴절률 차이로 가시광 영역에서 산란을 일으키고 필름 압착 시 기공이 닫히면서 투과도 조절이 가능함을 보였다. 광 투과도를 가역적으로, 1초 이하의 빠른 반응속도로 조절할 수 있으며 반복 구동에도 열화가 매우 적음을 확인하였다. 나아가 스마트 윈도우 응용을 위해, 다공성 Ecoflex 필름이 삽입된 압착형 창문을 제작하여 응용성을 시연하였다. 이 다공성 Ecoflex 필름의 제작 공정이 매우 단순하며, 실내 온도 및 조도 유지를 전기적 에너지 없이 가능한 에너지 절약형 스마트 윈도우의 기반 기술로 응용될 수 있다. In this study, we propose a smart window application based on a porous silicone elastomer film that can control light transmittance by compression. A porous elastomeric film was produced by emulsification of isopropyl alcohol aqueous solution in a platinum-catalyzed silicone known as an Ecoflex. It was shown that pores with a size of several hundred nanometers to several tens of micrometers induce light-scattering in the visible light region due to the difference in refractive index with the Ecoflex matrix, and the transmittance could be controlled as the pores were closed by applying compression on the film thickness. It was confirmed that the transmittance can be reversibly adjusted with a fast reaction rate of less than 1 second, and the deterioration is very small even in repeated driving. Furthermore, for smart window application, a press-type window with a porous Ecoflex film was demonstrated. The fabrication process is very simple and economically preferred, and it can be applied as a base technology for an energy-saving smart window that can maintain indoor temperature and illumination without electrical energy.
폐동정맥 기형을 동반한 유전성 출혈경향 말초혈관 확장증 1 예
김여주(Yeo Joo Kim),김인한(In Han Kim),문태훈(Tai Hoon Moon),조철호(Chul Ho Cho),고광곤(Kwang Kon Koh),조상균(Sang Kyoon Cho),김삼수(Sam Soo Kim),조수신(Soo Shin Cho),백완기(Wan Ki Baek),정원모(Won Mo Jung),박찬섭(Chan Sup Park),민수기( 대한내과학회 1996 대한내과학회지 Vol.50 No.4
Hereditay hemorrhagic telangiectasia (Osler-Weber-Rendu disease) is a familial disease that is characterized by delicate, ectatic vessels in the skin, mucous membrane and viscera. These patients have generalized vascular derangement. Pulmonary arteriovenous fistular is a rare congenital condition originated from malformation of capillary development. Direct communications between branches of the pulmonary artery and pulmonary vein cause right-to-left shunts, in which mixed venous blood cannot be oxygenated as it passes throuth the pulmonary circulation, Congenital arteriovenous malformation are associated with Osler-Weber-Rendu disease in 36-57% of cases. Recently, we experienced a rare case of hereditary hemorrhagic telangiectasia with pulmonary arteriovenous malformation.
누에와 육계 복합 추출물의 in vivo 면역증진 기능성 연구
김경조 ( Kyeong Jo Kim ),박해진 ( Hae Jin Park ),김일규 ( Il Gyu Kim ),김민주 ( Min Ju Kim ),신미래 ( Mi-rae Shin ),노성수 ( Seong-soo Roh ) 대한본초학회 2018 大韓本草學會誌 Vol.33 No.4
Objectives : The aim of this study was to investigate the immunopotentiating activity of combine extract that Silkworm and Cinnamomum cassia . Recently, acute epidemic diseases such as cold and viral respiratory diseases have been emerging. So, interested in immunity enhancement has been increasing, and research on natural products to promote immunity activity has been actively conducted. Methods : To confirm the immunopotentiating activity effect, Silkworm (SW), Cinnamomum cassia (CC), and SWCC combined extracts were treated 14 days at 300 ㎎/kg/day. The changes of glutamic oxalacetic transaminase (GOT), glutamic pyruvate transaminase (GPT) in serum were analyzed after experiment. The changes in the total spleen cell number were measured. Immune cells in spleen were analyzed using fluorescence activated cell sorter (FACS). also, analyzed the expression of cytokines in spleen. Results : Total number of cells in the spleen and FACS analysis of T lymphocytes activated in the spleen showed that the SWCC combined treated group had much higher frequency of active cells than both single groups. The ratio of CD4+CD8+, CD4+CD69+ and CD4+CD25+ T cells in spleen, SWCC is higher than other groups except Nor in CD4+, CD4+CD69+, CD4+CD25+ T cells. The results of this study suggest that SWCC can help immune function via IL-2, IL-10, IL-12, IFN-γ cytokine production, increased T lymphocytes and splenocyte proliferation. Conclusion : Therefore, these results suggested that the SWCC combined extracts administration increase stronger immunity enhancement than when SW and CC adminstration.
스포츠유명인의 브랜드자산 구성요소가 광고모델의 공신력에 미치는 영향
신정신(Jeong Shin Shin),김소라(So Ra Kim),김민철(Min Cheol Kim) 한국사회체육학회 2013 한국사회체육학회지 Vol.0 No.54
This study intends to clarify how the brand equity factors in a sports celebrity affect the public confidence which is regarded as an important source of advertising effect. It conceptualizes the brand equity of sports celebrity as having familarity, attachment, differentiation, and charisma, and the public confidence as composing of attraction, credibility and expertise. Measurement scales for each construct are adopted from the literature and modified to use the assumed relationships. The relationships are tested based on the survey results from 223 subjects. After sampling profiles using descriptive statistics, exploratory factor analyses and reliability analyses are adopted for the measurement purpose. To test the relationship, multiple regressions are used after testing the multicollinearity of constructs. The empirical testing shows that brand equity factors including familarity, attachment, differentiation and charisma affect the attraction of ad model. Both attachment and charisma influence the credibility of ad model, while charisma has a sole effect on the expertise of ad model. It is found that brand equity factor charisma has consistent effect on all three public confidence factors considered. Practical implications that emphasize prior attainment of brand equity of a sports celebrity before gaining the public confidence. The limitation of the study and future research implications are also discussed.
TNBS로 유발된 마우스 대장염모델에서 설파살라진, 육계와 시호 복합 추출물의 항염증 및 세포 자멸 개선효과
김경조 ( Kyeong Jo Kim ),신미래 ( Mi-rae Shin ),김수현 ( Soo Hyun Kim ),김수지 ( Su Ji Kim ),이아름 ( Ah Reum Lee ),권오준 ( O Jun Kwon ),길기정 ( Ki-jung Kil ),노성수 ( Seong-soo Roh ) 한국응용생명화학회 2017 Journal of Applied Biological Chemistry (J. Appl. Vol.60 No.3
Inflammatory bowel disease (IBD) is including Crohn`s disease and ulcerative colitis. Sulfasalazine commonly used in IBD, possibly has various side effects after high dosage and long term intake. The present study aimed to investigate the sulfasalazine and combination with herbal medicine on 2,4,6- trinitrobenzene sulfonic acid (TNBS)-induced in mice model. TNBS-induced mice were injected through a flexible catheter 4 cm in length 1.6 mg TNBS. Animals were divided into five groups (n=12): Normal group, TNBS control group, Sulfasalazine (30 mg/kg) group, Sulfasalazine (60 mg/kg) group, Sulfasalazine (30 mg/kg)+Cinnamomi cortex and Bupleuri radix mixture (30 mg/kg) (SCB) group. Administration groups were fed extract during 7 days. The inflammatory, and apoptotic protein levels were determined using western blotting. SCB treatment showed an outstanding effectiveness in counteracting the IBD, as assessed by reduction of body weight loss, down-regulation of proinflammatory proteins and cytokines, and by inhibition of proteins related to apoptosis. This is the first report that sulfasalazine and Cinnamomi cortex plus Bupleuri radix mixture improve the severity of experimental IBD through the inhibition of both inflammation and apoptosis. We confirm that the SCB treatment instead of sulfasalazine alone may be promising as an alternative therapeutic plan against IBD, without any evidence of adverse effects.
웹3D 기술 기반의 가상현실 콘텐츠 개발 방법에 관한 연구
신미해(Shin, Mi-Hae),정종인(Chung, Jong-In),김창석(Kim, Chang-Suk),강신천(Kang, Shin-Cheon),김의정(Kim, Eui-Jeong) 한국전자상거래학회 2011 전자상거래학회지 Vol.12 No.4
본 연구는 컴퓨터 그래픽스와 인터넷 기술의 발전 함께 최근 전 세계적으로 관심을 가지고 연구되고 있는 웹3D와 관련한 국내ㆍ외의 기술 현황을 검토해보고, 이를 바탕으로 국제표준 기술의 범위 내에서 국내의 실정에 맞는 가상현실 웹3D 콘텐츠개발 방법론을 정립하였다. 또한 정립된 가상현실 웹3D 콘텐츠 개발 방법론이 실제 성능과 효과의 측면에서 의미 있는 성과를 창출할 수 있는가에 대한 검증을 위해 실제 콘텐츠를 구현하여 개발방법의 타당성 및 효율성을 검증해보고 이에 대한 결과를 해석하였다. In this paper we proposed web-based multimedia contents development method using Web 3D technology and implemented web 3D contents for use at the industrial field. A implementation of contents is composed of modeling to specific entity in 3D shape, convert modeling data to enable data at web and include in webpage. A practical use of contents on this research can provide more advanced user experience and immersion.
조우신(Woo Shin Cho),김기용(Key Yong Kim),박수성(Soo Sung Park),김정환(Jung Hwan Kim),정광환(Kwang Hwan Jung),김덕현(Duck Hyun Kim) 대한슬관절학회 1999 대한슬관절학회지 Vol.11 No.1
There are several rnethods to correct the tibial bony defect including resection, cement filling, autograft or allograft and metal augmentation. The purpose of this study is to find the adequate treatment method of tibia bony defect through analysis of the result with above methods. From Sep. 1993 to Dec. 1997, the authors analyzed 93 cases of tibial medial bony defect corrected by overresection of lateral condyle, allograft and metal wedge or block among 358 cases of primary total knee arthroplasty(TKA) operated at Asan Medical Center. All cases were devided into four groups according to the treatment method; group A(31 cases) with overresection of lateral condyle, group B(37 cases) with metal wedge, group C(21 cases) with metal block and group D(4 cases) with allograft. The mean follow up period was 23.6 months(12 56 months). The results were as follows, 1. There were no definite statistical difference between group A, B, C and D in HSS knee score, ROM, correction of deformity. But in group D, there is one case of loss of the correction. 2. Loosening of the implant was not noted, but 17 cases of mild bony resorption was found just beneath the implant. It was particularly prominent in group B(9 cases) than group A(5 cases) and C(3 cases). 3. Among 4 cases of allograft, one has developed collapse of allograft. 4. 3 cases of deep infection developed only in group C, which were followed by revision TKA. Although further follow up study should be carried out, we concluded that resection of lateral tibial condyle, allograft, metal augmentation is a good substitute to the correction of the tibial bony defect in primary TKA.