• 제목/요약/키워드: Daegu.Gyeongbuk

검색결과 962건 처리시간 0.028초

Investigation of a Photothrombosis Inducing System for an Observation of Transient Variations in an in vivo Rat Brain

  • Oh, Sung Suk;Park, Hye Jin;Min, Han Sol;Kim, Sang Dong;Bae, Seung Kuk;Kim, Jun Sik;Ryu, Rae-Hyung;Kim, Jong Chul;Kim, Sang Hyun;Lee, Seong-jun;Kang, Bong Keun;Choi, Jong-ryul;Sohn, Jeong-woo
    • Current Optics and Photonics
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    • 제2권6호
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    • pp.499-507
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    • 2018
  • For the spatiotemporally aligned observation of photothrombosis induction and transient variations of in vivo brain stroke, we developed a novel photothrombosis inducing system compatible to a magnetic resonance imaging (MRI) system using nonmagnetic stereotaxic equipment. From the spatial point of view, the system provides a more reliable level of reproducibility of the photothrombosis in each brain. From the temporal point of view, from T1- and T2-weighted in vivo MR (magnetic resonance) images, the transient variations such as incidence, location, and size of the thrombosis are measured quantitatively. In addition, the final variation is observed in the ex vivo brain by TTC (Triphenyltetrazolium chloride) staining based on histological assay and utilized for the verification of the MR images. From the experimental result of the rat brain, the proposed system shows more reliable characteristics for transient variations of brain strokes.

A 0.55" PDLC-LCoS Micro-display for Mobile Projectors

  • Do, Yun-Seon;Yang, Kee-Jeong;Sung, Shi-Joon;Kim, Jung-Ho;Lee, Gwang-Jun;Lee, Yong-Hwan;Chung, Hoon-Ju;Roh, Chang-Gu;Choi, Byeong-Dae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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    • pp.1527-1530
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    • 2009
  • A LCoS micro-display using polymer dispersed liquid crystals (PDLCs) for light switching layer was fabricated. The Si backplane of SVGA ($800{\times}600$) with a pixel size of $14{\times}14mm^2$ was prepared by a $0.35{\mu}m$ 18V CMOS process. PDLCs were filled in the gap between backplane and ITO glass by conventional vacuum filling method. The prepared panels were driven by a field sequential color (FSC) scheme at the frequency of 180Hz and were successful in modulating LED lights to show projection images. The preparation and performance of PDLC-LCoS are presented.

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CIGS 박막 태양전지를 위한 CdS 버퍼층의 특성 연구 (Characteristics of CdS buffer layer for CIGS thin film solar cells)

  • 박미선;성시준;황대규;김대환;이동하;강진규
    • 한국태양에너지학회:학술대회논문집
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    • 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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    • pp.394-396
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    • 2012
  • Chemical bath deposition (CBD) process conditions for depositing CdS buffer layers was studied for high efficiencies of CIGS thin film solar cells. Growth rate of CdS thin films has an effect on surface morphology and quality of thin films. By the change of growth rate, CdS buffer layers showed a large difference in surface morphology and this difference was closely related with the photovoltaic properties of CIGS solar cells.

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중앙아시아CIS 국가를 활용한 대구·경북 무역의 활성화 방안 연구 (A Study on the Method for Promoting Trade between Central Asian CIS Countries and the region Daegu-Gyeongbuk)

  • 안태건;김성룡
    • 무역학회지
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    • 제41권4호
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    • pp.221-243
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    • 2016
  • 본 연구는 중앙아시아국가들과 대구·경북 지역의 무역활성화를 위한 방안을 제시하기 위함을 목적으로 한다. 새로운 신흥 시장으로 성장하고 있는 중앙아시아지역과 현재의 교역 현황을 분석하였다. 또한 중력모형분석을 통하여 중앙아시아 지역의 국제화가 교역량 증가에 긍정적인 영향을 미친다는 사실을 입증하였다. 이를 바탕으로 교역활성화를 위한 국가적 정책 수립과 민간차원에서 접근해야할 방법에 대하여 제시하였다. 또한 대구·경북 지역의 교역 활성화를 위해 지역차원에서 이루어져야 할 해결책에 대하여 논의하였다.

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