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임현태,유호균,하유미,김윤호,원종찬,김진수 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
OCR (Optical Clear Resin) materials are a transparent resins that are filled between the touch panel and the display. Acrylic resins not only cure quickly by UV irradiation, but also have advantages such as excellent transparency, eco-friendliness, and low cost. In this study, we synthesized and characterized an imide-based urethane acrylate (imide-UAO) derived from cycloaliphatic dianhydrides. Thereafter, a UV-curable imide-modified urethane acrylate resin composite was prepared by combining the newly synthesized imide-UAO, reactive monomer, and photoinitiator. In addition, the optical properties (yellow index, haze, and transmittance) and adhesive properties of UV-cured composites were investigated to confirm their potential as OCR materials.
Optimized TOF-PET detector using scintillation crystal array for brain imaging
임현태,최용,정지웅,박건태,김연경,정진호 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.7
Research groups in the field of PET instrumentation are studying time-of-flight(TOF) technology to improve the signal-to-noise ratio of PET images. Scintillation light transport and collection plays an important role in improving the coincidence resolving time(CRT) of PET detector based on a pixelated crystal array. Four crystal arrays were designed by the different optical reflection configuration such as external reflectors and surface treatment on the CRT and compared with the light output, energy resolution and CRT. The design proposed in the study was composed of 8 8 LYSO crystal array consisted of 3 3 15 mm3 pixels. The entrance side was roughened while the other five surfaces were polished. Four sides of all crystal pixels were wrapped with ESR-film, and the entrance surface was covered by Teflon-tape. The design provided an excellent timing resolution of 210 ps and improved the CRT by 16% compared to the conventional method using a polishing treatment and ESR-film. This study provided a method for improving the light output and CRT of a pixelated scintillation crystal-based brain TOF PET detector. The proposed configuration might be an attractive detector design for TOF brain PET requiring fast timing performance with high cost-effectiveness
한우 생산이력제에 활용 가능한 Microsatellite의 분석과 선발
임현태,민희식,문원곤,이재봉,김재환,조인철,이학교,이용욱,이정규,전진태,Lim, H.T.,Min, H.S.,Moon, W.G.,Lee, J.B.,Kim, J.H.,Cho, I.C.,Lee, H.K.,Lee, Y.W.,Lee, J.G.,Jeon, J.T. 한국축산학회 2005 한국축산학회지 Vol.47 No.4
한우의 생산이력제에 활용 가능한 20종의 microsatellite marker를 선정하고 다형성지수, F-통계량, 동일개체 출현확률, 친자감별 확률 및 유전적 거리지수 등을 MSA, CERVUS, FSTAT, GENEPOP, API-CALC 및 PHYLIP 프로그램 등을 연계적으로 활용하여 추정하였다. Heter- ozygosity 추정치에 근거하여 선발한 11개의 microsatellite(TGLA53, TGLA227, ETH185, TGLA122, BM4305, INRA23, ILSTS013, BMS1747, BM2113, BM2113, BL1009와 ETH3)는 Applied Biosystems사의 StockMakersTM와 비교하여 100배 정도의 동일개체 출현확률이 낮아 한우의 생산이력제 적용에 보다 효율적인 것으로 나타났다. 또한 DA 유전적 거리지수와 pairwise-FST 추정치를 활용하여 근접지역의 농장간 근연관계의 정도를 파악할 수 있는 자료로 활용할 수 있을 것으로 사료된다. To test applicability to the Hanwoo traceability system, twenty microsatellite markers were selected and analyzed. MSA, CERVUS, FSTAT, GENEPOP, API_CALC and PHYLIP software was employed serially to estimate heterozygosity, polymorphic information content, F-statistics, identity probability, exclusion probability and genetic distance. Eleven microsatellite markers(TGLA53, TGLA227, ETH185, TGLA122, BM4305, INRA23, ILSTS013, BMS1747, BM2113, BL1009, and ETH3) were selected based on their high heterozygosity values. Identity probability using these markers is one hundred times higher than when using StockMakersTM of Applied Biosystems. This indicates the selected microsatellite markers are appropriate and effective for use in the Hanwoo traceability system. Additionally, estimates of DA genetic distance and pairwise-FST can be utilized to identify genetic relationships between adjacent farms.