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A new method for measuring ultra-low water vapor permeation for OLED displays

  • Dunkel, Ralf;Bujas, Roko;Klein, Andre;Horndt, Volker;Wrosch, Matt
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.589-593
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    • 2005

  • It is well known that proper encapsulation is crucial for the lifetime of organic light emitting diode (OLED) displays. With the development of increasingly better barrier coatings and perimeter seals, it has now become very desirable to be able to precisely measure the rate of water vapor and oxygen permeation through barrier coatings and perimeter sealing. This paper demonstrates a new permeation measurement method that uses tritium-containing water (HTO) as a tracer material. The theoretical detection limit of this direct method is $2.4{\times}10^{-8}g/(m^2day)$.

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Coronary Artery Bypass Grafting without Cardiopulmonary Bypass -one case report- (임공심폐기를 사용하지않는 관상동맥우회술 -1례 보고-)

  • Na, Chan-Young;Lee, Young-Tak;Kim, Woong-Han;Chung, Chul-Hyun;Jung, Yoon-Seop;Bang, Jeong-Hyin;Kim, Wook-Seong;Lee, Sub;Han, Jae-Jin;Chung, Do-Hyun;Chung, Ill-Sang;Park, Jung-Won;Park, Young-Kwan;Hong, Sung-Nok;Moon, Hyun-Soo
    • Journal of Chest Surgery
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    • v.29 no.11
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    • pp.1267-1269
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    • 1996

  • Coronary artery bypass grafting without cardiopulmonary bypass is now one of accepted technique of myocardial revascularization. This technique is an alternative method for patients with lesions in the left anterior descending coronary artery and right coronary artery. We report a case of coronary artery bypass grafting without cardiopulmonary bypass or cardiac arrest.

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Algebraic Fiber Space Whose Generic Fiber and Base Space Are of Almost General Type

  • Fukuda, Shigetaka
    • Kyungpook Mathematical Journal
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    • v.54 no.2
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    • pp.203-209
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    • 2014

  • We assume that the existence and termination conjecture for flips holds. A complex projective manifold is said to be of almost general type if the intersection number of the canonical divisor with every very general curve is strictly positive. Let f be an algebraic fiber space from X to Y. Then the manifold X is of almost general type if every very general fiber F and the base space Y of f are of almost general type.

  • https://doi.org/10.5666/KMJ.2014.54.2.203 인용 PDF KSCI