어두워진 실상과 밝혀진 허상

이선영(Lee, Sun Young) 한국예술종합학교 미술원 조형연구소 2013 Visual Vol.10 No.-

이예린의 작품은 군더더기 없이 단순명료한 인터페이스를 가지고 있지만, 내포적 다양성이 풍부하다. 대표적인 사진 작품들은 그림자이긴 하지만, 물에 비친 그림자이기에 거울 같은 반영상이다. 거기에는 재현의 기원이 되는 그림자와 거울의 모델이 동시에 작동한다. 배수가 잘 안되어 하수구로 빠져나가지 못한 물이 고여 생긴 이 순간의 연못은 다른 세상을 담는 틀이 되었다. 현실과의 최소한의 접점을 가지는 상상세계는 회화에서 극대화되고, 드로잉에서는 추상적 요소들로 분해되어 있지만, 사진 작업에서는 절묘한 균형을 이룬다. 현실과 상상은 이원론으로 완전히 분리되어 있기 보다는, 뫼비우스 띠처럼 연결된다. 모태 예술이었던 음악은 무의식과 몸속에 깊숙이 자리하며, 음악뿐 아니라 미술에서도 여러 장르를 두루 섭렵해온 작품은 공共감각적이다. 이예린의 작품 속 허상simulacre은 현실과 닮은 그림자eikônes와 닮지 않은 그림자phantasma가 모두 존재한다. 작가는 미술이라는 우회로를 통해서 순수한 생성의 세계에 가 닿으려고 한다. The works of Ye leen Lee feature simple and clear interfaces, while they imply abundant diversity. Her representative photo works show mirror-like shadows reflected on the surface of the water, embodying the origin of representation with shadows and mirrors. The pond or puddle made of stagnating water that failed to drain becomes a frame for another world. In the works of Lee, the imaginary world having minimal contact points with the reality becomes maximized in paintings, gets disassembled into abstract elements in drawings, and creates a subtle balance in photographs. However, the reality and the imagination are not separated by dualism but connected like a Möbius strip. Since the artist learned music from inside her mother’s womb, music is deeply rooted in her unconsciousness as well as in her body. The works of Lee are synesthetic, for she has experimented with diverse genres of art besides music. The simulacrum in her works contains both eikônes that is close to the reality and phantasm that is far from the reality. Using art as a detour, the artist attempts to reach a pure world of creation.

저융점 폴리에스터와 텐셀을 이용한 싸이로필사의 제조와 물성 분석

이선영,유재정,홍윤광,이시우,이승구,Lee, Sun-Young,Yoo, Jae-Jung,Hong, Yun-Kwang,Lee, Si-Woo,Lee, Seung-Goo 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.2

The purposes of this study were to manufacture sirofil yarn using tencel roving and low melting polyester filaments and to analyze the physical properties of sirofil yarns with yarn count, in order to develop composite yarn for high glossy and luxury textile fabrics. The surface morphology of sirofil yarn was observed with the SEM. Tensile and bending properties of sirofil yarn were examined with the yarn count. The tensile fracture of sirofil yarn was shown with a two-step process. Firstly, tencel yarn having low elongation was broken and then the low melting polyester filaments were fractured with very high elongation. Bending properties of sirofil yarn were measured with the KES-FB. The bending rigidity of sirofil yarn was between that of tencel spun yarn and that of low melting polyester. Also, the surface property of sirofil yarn was evaluated in terms of the hairiness coefficient. It was shown that stress, strain, bending rigidity, bending hysteresis and surface hairiness coefficient of sirofil yarn decreased as yarn count increased.

에틸렌옥사이드(Ethylene oxide)에 노출된 병원 근로자들의 소핵 빈도와 유전적 감수성 지표와의 연관성

이선영,김양지,최영주,이중원,이영현,신미연,김원,윤충식,김성균,정해원,Lee, Sun-Yeong,Kim, Yang-Jee,Choi, Young-Joo,Lee, Joong-Won,Lee, Young-Hyun,Shin, Mi-Yeon,Kim, Won,Yoon, Chung-Sik,Kim, Sung-Kyoon,Chung, Hai-Won 한국환경보건학회 2011 한국환경보건학회지 Vol.37 No.6

Objectives: Ethylene oxide (EtO) is classified as a human carcinogen, but EtO is still widely used to sterilize heat-sensitive materials in hospitals. Employees working around sterilizers are exposed to EtO after sterilization. The aim of the present study was to assess the exposure of EtO level, coupled with occupationally induced micronuclei from hospital workers. The influence of genetic polymorphisms of detoxifying genes (GSTT1 and GSTM1) and DNA repair genes (XRCC1 and XRCC3) on the frequencies of micronuclei in relation to exposure of EtO was also investigated. Methods: The study population was composed of 35 occupationally exposed workers to EtO, 18 student controls and 44 unexposed hospital controls in Korea. Exposure to EtO is measured by passive personal samplers. We analyzed the frequencies of micronuclei by performing cytokinesis-block micronucleus assay (CBMN assay) and GSTM1, GSTT1, XRCC1, and XRCC3 were also genotyped by performing polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: The frequencies of micronuclei in EtO exposure group, student controls and hospital controls were $18.00{\pm}7.73$, $10.47{\pm}7.96$ and $13.86{\pm}6.35$ respectively and their differences were statistically significant, but no significant differences according to the level of EtO were observed. There was a dose-response relationship between the frequencies of micronuclei and cumulative dose of EtO, but no significantly differences were observed. We also investigated the influence of genetic polymorphisms (GSTM1, GSTT1, XRCC1, and XRCC3) on the frequencies of micronuclei, but there were no differences in the frequencies of micronuclei by genetic polymorphisms. Conclusions: The frequencies of micronuclei in EtO exposure group was significantly higher than control groups. A dose-response relationship was found between the level of EtO exposure and the frequencies of micronuclei, but no statistically differences were observed. We also found that the frequencies of micronuclei were increased according to cumulative EtO level. There was no association of the genetic GSTM1, GSTT1, XRCC1, and XRCC3 state with the frequency of micronuclei induced by EtO exposure.

스펀본드 부직포의 흡음성에 대한 구조적 요인 효과 연구

이선영,이지은,변태웅,이승구,Lee, Sun Young,Lee, Ji Eun,Byun, Tae Woong,Lee, Seung Goo 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.6

Nonwovens have been proposed as a sound absorber in applications of home interior textile industry for effective noise control. Honeycomb cell blind textiles have been increasingly used in window covering for noise reduction. In this study, the effect of structural parameters of honeycomb cell-structured spunbond nonwoven on the sound absorption property was investigated. Spunbond nonwovens with various thicknesses, areal densities, and porosities were used, and they were joined in the form of a honeycomb cell structure with various cell widths and cell layering. The sound absorption property of the nonwoven improved with increasing thickness. The porosity of the nonwoven was shown to be proportional to the noise reduction coefficient (NRC). An increased air gap between two layers of the nonwoven shifted the maximum sound absorption coefficient toward a lower frequency range. The honeycomb cell structure was confirmed to contribute to an improvement of the sound absorption property. Layering of the honeycomb cell structure was also shown to be a critical factor in controlling the sound absorption property of the nonwoven.

Hybrid Capacitor의 전기화학적 특성 및 Hybrid Capacitor / Li-ion Battery의 펄스 방전 특성

이선영,김익준,문성인,김현수,Lee, Sun-Young,Kim, Ick-Jun,Moon, Seong-In,Kim, Hyun-Soo 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.12

In this study, we have prepared, as the pluse power source, a commercially supplied Li-ion battery with a capacity of 700 mAh and AC resistivity of 60 md at 1 kHz and nonaqeous asymmetric hybrid capacitor composed of an activated carbon cathode and MCMB anode, and have examined the electrochemical characteristics of hybrid capacitor and the pulse performances of parallel connected hybrid capacitor/Li-ion battery source. The nonaqueous asymmetric hybrid capacitors constituted with each stack number of pairs composed of the cathode, the porous separator and the anode electrode were housed in Al-laminated film cell. The 10 stacked hybrid capacitor, which was charged and discharged at a constant current at 0.25 $mA/cm^2$ between 3 and 4.3 V, has exhibited the capacitance of 108F and the lowest equivalent series resistance was 32 $m{\Omega}$ at 1 kHz. On the other hand, the enhanced run time of Li-ion battery assisted by the hybrid capacitor was obtained with increasing of current density and pulse width in Pulse mode. The best improvement, $84\;\%$ for hybrid capacitor/Li-ion battery was obtained in the condition of a 7C-rate pulse (100 msec)/0.5C-rate standby/$10\;\%$ duty cycle.

무농약·유기재배 사과원에서 교미교란제를 이용한 복숭아순나방과 복숭아심식나방의 방제

이선영,최경희,도윤수,이순원,윤창만,김길하,Lee, Sun-Young,Choi, Kyung-Hee,Do, Yun-Su,Lee, Soon-Won,Yoon, Changmann,Kim, Gil-Hah 한국응용곤충학회 2014 한국응용곤충학회지 Vol.53 No.2

복숭아순나방과 복숭아심식나방의 방제를 위해 교미교란제 MD-IKR (Isomate-KR)과 MD-CR (Confuser-R)의 효과를 무농약 유기재배 사과원에서 평가하였고 관행방제 사과원과 비교하였다. 2011년 칠곡지역의 복숭아순나방에 대한 두 종의 교미교란제에 대한 교미저해율은 99.8%였고, 상대적으로 청송지역의 교미저해율이 각각 99.8과 92.8%로 칠곡지역과 차이가 있었다. 2012년 칠곡지역의 교미저해율은 각각 92.4와 96.7%였다. 청송지역에서 교미저해율은 99.6%로 가장 높은 교미저해율을 보였다. 2011년 2012년의 복숭아심식나방에 대한 교미저해율은 두 교미교란제 모두 100%로 높게 나타났다. 두 교미교란제는 복숭아순나방과 복숭아심식나방이 방제효과에 대하여 무방제구 대비 방제효과가 월등하였고, 관행방제와 비교했을 때 통계적으로 유의성 없이 방제효과가 대등하였다. 두 종의 교미교란제와 관행재배구의 새순과 과실피해율은 무방제구 대비 유의성있는 방제효과를 보였다. 두 종의 교미교란제 간에는 효력의 차이가 없어 MD-IKR이 MD-CR을 충분히 대체할 수 있을 것으로 판단된다. The efficacy of mating disruptors MD-IKR (Isomate-KR) and MD-CR (Confuser-R) for controlling Grapholita molesta (Busck) and Carposina sasakii (Matsumura) was evaluated in non-chemical or organic apple orchards. For G. molesta, the efficacy of MD-IKR and MD-CR in Chilgok was 99.8 and 99.8% (2011) and 92.4 and 96.7% (2012), respectively, showing different mating reduction values. The efficacy of MD-IKR and MD-CR in Cheongsong was 99.1 and 92.8% (2011) and 99.6 and 99.6% (2012), respectively. For C. sasakii, the efficacy of MD-IKR and MD-CR was 100% at Chilgok and Cheongsong in 2011 and 2012. Evaluation of the shooting and fruit damage rates showed that the efficacy of the mating disruptors in controlling G. molesta and C. sasakii was better than that of the non-control. However, there was no significant control difference between using the mating disruptors and the conventional control. No difference in the efficacy of the two mating disruptors was observed. We believe that MD-IKR could be an alternative to MD-CR.

염화칼슘 처리농도가 가로변 지피식물의 생장에 미치는 영향

이선영,김원태,주진희,윤용한,Lee, Sun-Young,Kim, Won-Tae,Ju, Jin-Hee,Yoon, Yong-Han 한국조경학회 2013 韓國造景學會誌 Vol.41 No.4

본 연구는 가로변 지피식물을 중심으로 염화칼슘에 대한 내성과 피해양상을 파악하여 효율적인 가로변 지피식물 적용 및 관리 자료를 제시하고자 실시되었다. 실험구 조성은 염화칼슘 비율 대조구, 0.5%, 1.0%, 3.0%로 구분하여 일반상토 500g을 기준으로 고상처리 하였다. 식물재료로는 가로수 지피식물로 가능성이 있거나 사용되는 수호초, 옥잠화, 마삭줄, 순비기나무, 사철나무, 작살나무를 사용하였다. 결과를 정리하면 토양은 염화칼슘 농도처리에 따라 산도가 증가하였으며, 전기전도도는 지속적으로 감소하였고, 치환성 칼슘 함량은 처리 이후 증가하였으나 실험기간 중 감소하였다. 수호초, 마삭줄, 사철나무는 염화칼슘 비율 0.5%까지 생육 및 생존이 양호한 것으로 나타났다. 옥잠화, 순비기나무는 1.0%까지 생존이 가능한 것으로 나타났으며, 옥잠화는 식재 기반의 수분을 통한 염류의 이동이 가능한 조건에서 가로변의 지피식재로 적용이 가능할 것이라 판단되었다. 작살나무는 대조구를 제외한 염화칼슘 처리구에서 생육이 불량하고 개엽하지 않아 염화칼슘에 대한 민감성이 큰 것으로 나타났다. The purpose of this study was to provide information on management and apply it to a roadside ground cover plant understanding the capacity of calcium chloride in the plant. The experimental group was composed of the ratio control group of calcium chloride, 0.5%, 1.0%, and 3.0% in 500g of soil. Plant materials were selected and measured according to their ecological characteristics such as ground cover plant, Pachysandra terminalis, Hosta plantaginea, Trachelospermum asiaticum, Vitex rotundifolia, Euonymus japonica and Callicarpa japonica. The acidity of the amended soil was increased gradually depending on the treatment and conductivity was continually decreased. The EX-Ca increased after the treatment, but decreased in the middle of the experiment. Pachysandra terminalis, Trachelospermum asiaticum and Euonymus japonica were able to grow and survive at the ratio of 0.5%. Hosta plantaginea and Vitex rotundifolia were able to survive at the ratio of 1.0%. Hosta plantaginea, the possible state can absorb salts due to moisture and, can be applied to ground cover plants in the roadside. The growth and development of Callicarpa japonica was poor and the leaves were open to grow for calcium chloride treatment except the control group. It was concluded that Callicarpa japonica was very sensitive to calcium chloride.

유기용매전해질에 따른 전기이중층캐패시터의 전기화학적 특성

이선영,주재백,손태원,조병원,조원일,Lee, Sun-young,Ju, Jeh-Beak,Sohn, Tae-Won,Cho, Won-Il,Cho, Byung-Won 한국전기화학회 2005 한국전기화학회지 Vol.8 No.1

높은 비표면적을 갖는 carbon과 유기용매 전해질 사이의 계면에서 생기는 전기이중층용량을 기본으로 작동하는 전기이중층 캐패시터는 IC memories, microcomputer 등으로 폭 넓게 사용되며 maintenance-free의 영구적인 back-up용 전원으로 넓게 사용되고 있다 EDLC에 사용되는 전해질은 이온 전도도가 높아야 하고 사용되는 온도 범위가 넓어야 한다. 그리고 고전압을 인가했을 때 전해질이 전기화학적으로 안정해야 한다. 본 실험에서는 고전압에서 안정적인 액상 유기계 전해질을 사용하여 전기이중층캐패시터의 전기화학적 특성을 확인하였다. Paste rolling법으로 제조된 탄소전극과 $1M-LiPF_6$ in PC-GBL-DEC (volume ratio 1:1:2)의 유기용매전해질을 사용한 전기이중층캐패시터가 64F/g의 우수한 비축전용량을 발현하였다 Electric double layer capacitors(EDLCS) based on the charge stored at the interface between a hi팀 surface area carbon electrode and an organic electrolyte solution are widely used as a maintenance-free power source for IC memories and microcomputers. The achievement of the excellent performance of the capacitor requires an electrolyte solution which provides high conductivities over a wide temperature range and good electrochemical stabilities to allow the capacitor to be operated at high voltage. The electrochemical capacitor using a carbon material as electrodes and using an organic electrolyte with $1M-LiPF_6$ in PC-GBL-DEC(volume ratio 1:1:2) has specific capacitance of 64F/g.

폴리우레탄으로 가교화한 탄소나노튜브 나노복합체의 합성과 특성

이선영,정용채,조재환,전병철,Lee, Sun-Young,Jung, Yong-Chae,Cho, Jae-Whan,Chun, Byoung-Chul 한국섬유공학회 2008 한국섬유공학회지 Vol.45 No.4

Polyurethane(PU)-crosslinked multi-walled carbon nanotubes(MWNTs) with different MWNTs content were synthesized, and their morphology and crystallization were investigated. The crosslinking of MWNTs with PU was achieved by reacting MWNTs treated chemically in the mixed acids with prepolymer obtained from a reaction of diisocyanate and polyol. The functioanlization of MWNTs with PU was confirmed by FT-IR, Raman, and XPS measurements, and their morphology was observed by SEM and TEM measurements. Optimum content of MWNTs for PU-crosslinked MWNTs was dependent on an amount of prepolymer and concentration of -OH group in MWNTs. The crystallinity of poly($\varepsilon$-caprolactone)-based PU decreased with an increase of MWNTs content, and it was ascribed to the confinement of crystallization of PCL molecules due to the crosslinking of PU with MWNTs.

탄소나노튜브와 하이퍼브랜치 폴리우레탄 혼합용액의 스프레이 코팅에 의한 직물의 전기발열 효과와 발수성

이선영,조재환,김영호,Lee, Sun-Young,Cho, Jae-Whan,Kim, Young-Ho 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.3

Cotton and polyester fabrics were coated with a hyperbranched polyurethane (HBPU) solution including multi-walled carbon nanotubes (MWNTs) using a spraying method. The MWNT-coated fabrics showed good water repelling properties at $70^{\circ}C$ and room temperature due to presence of well dispersed MWNTs on the fabric surface. The electrical heating effect of the MWNT-coated fabrics was demonstrated when a DC voltage of 10-30 V was applied to the fabrics, which was dependent on the electrical conductivity of the MWNT/HBPU composites. The MWNT coating on the fabric surface by spraying may be a good method for achieving electrical heating and water repellence.