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기능성 마이크로 광 부품의 성형을 위한 UV 성형 공정 기술 개발
김석민(Seok-min Kim),강신일(Shinill Kang) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
An experimental method is presented to maximize the replication quality of UV-molded micro-optical components. It is important to maximize the replication quality, because one can obtain the replicated micro-optical componenst with desired properties by accurate control of the shape. In the present study, a simple technique to avoid micro-air bubbles was first suggested. The effects of the UV-curing dose and the compression pressure on the replication quality of UV-molded structure were examined experimentally. Finally, as a practical application of the process design method, microlens arrays with diameters between 8 ㎛ and 96 ㎛ were fabricated by the present method, and the replication quality and the optical properties of the replicated microlens were measured and analyzed.
소경단목재(小輕短木材) 접목을 활용한 유니트 가변형 테이블디자인 연구개발
김명태(Myeong Tae Kim),서석민(Seok Min Seo) 한국가구학회 2012 한국가구학회지 Vol.23 No.1
This is the study about the New Formation Developement, the Changeable Table Design with Units that made of Wasted Wood to use restricted material rationally and to improve the space efficiency in the Table Design. We made some changeable table design with units that made of laminated wood wasted. And we found out the following formative characteristic and physical merits through this study. First, the space efficiency can be improve technically through the unit combination and organic transfomation of the specific form and a new method by laminated wood make the personal originality and the structral stability be built up. Second, there are some merits, moveable convenience and variable layout by the combination or transformation or personal fondness so that economical efficiency and variable of design can be improved. Third, we can remove original faults inside wood like a knot or not-uniform of wood organ when we laminate wood so that we use proper units that have original beauty of wood and can represent mild mood of furniture wholly. Fourth, much more strengthen tensile strength by the reciprocal action among the units that be made of laminated wood reduces wood’s metamorphosis like bending or twisting so that the uniformity of wood can be gain and furniture’s metamorphosis can be reduced. According to changes of nature environment, the difficulty of supply and demand for wood may be happen. According to changes of life style these days, supply and demand for environment friendly material, processing technique and developement of design to improve the efficiency of using space must be very important factor in morden furniture design. So we propose changeable furniture design by using new environment friendly meterial and processing method from this study.
뇌졸중환자의 어혈병태모형과 CAVI, 심혈관질환 위험도간의 상호관계에 관한 임상적 연구
김석민,선종주,최창민,정재한,황재웅,민인규,김창현,정우성,문상관,조기호,배형석,김영석,Kim, Seok-Min,Sun, Jong-Joo,Choi, Chang-Min,Jung, Jae-Han,Hwang, Jae-Woong,Min, In-Kyu,Kim, Chang-Hyun,Jung, Woo-Sang,Moon, Sang-Kwan,Cho, Ki-Ho,Bae, Hy 대한한방내과학회 2007 大韓韓方內科學會誌 Vol.28 No.3
Objectives : This study was performed to evaluate the relationships among blood-stasis. cardio-ankle vascular index(CAVI) and cardiovascular risk. Methods : We obtained general characteristics. blood-stasis score and CAVI from 150 stroke patients. Blood-stasis score was evaluated by blood-stasis criteria. Cardiovascular risk (the following. Stuart's risk score) was evaluated by Stuart's risk scoring scale. We divided subjects into a blood-stasis group and a non blood-stasis group by blood-stasis scores. high CAVI and normal CAVI groupsby CAVI. We compared the general characteristics. CAVI (excluded from comparison between high CAVI group and normal CAVI group), Stuart's risk score and blood-stasis score (excluded from comparison between blood-stasis group and non blood-stasis group) between each pair of groups. Pearson correlation analysis was applied to examine the relationship between blood stasis score and CAVI, blood stasis score and Stuart's risk score. CAVI and Stuart's risk score. Results : The blood-stasis group had significantly higher CAVI and Stuart's risk scores than the non blood stasis group. The high CAVI group had significantly higher blood-stasis score and Stuart's risk score than the normalCAVI group. In correlation analysis. there were significant positive relationship between blood stasis score and Stuart's risk score, CAVI and Stuart's risk score. and blood stasis score and CAVI. Conclusions : This study suggeststhat there is a significant relationship among blood stasis,CAVI and cardiovascular risk.