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Effect of ZnS Buffer Layer on Inorganic EL Device

  • Kim, Duck-Gon;Park, Lee-Soon;Kum, Tae-Il;Lee, Sang-Mok;Sohn, Sang-Ho;Jung, Sang-Kooun
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1629-1631
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    • 2007
  • Significant process in the performance and commercialization of full-color thin-film electroluminescent(EL) displays has been achieved. This is due to the remarkable progress made in the performance of exiting EL phosphors, development of new phosphor materials, and design of new EL phosphor structures. In this paper, we fabricated thinfilm EL devices with ZnS buffer and $BaTiO_3$ electric layer with on top and bottom of phosphor layer. The effect of ZnS and $BaTiO_3$ layer on the luminance of EL device were studied.

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Early Manifestation of Supravalvular Aortic and Pulmonary Artery Stenosis in a Patient with Williams Syndrome

  • Lee, Jong Uk;Jang, Woo Sung;Lee, Young Ok;Cho, Joon Yong
    • Journal of Chest Surgery
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    • v.49 no.2
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    • pp.115-118
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    • 2016
  • Williams syndrome (WS) is a developmental disorder characterized by vascular abnormalities such as thickening of the vascular media layer in medium- and large-sized arteries. Supravalvular aortic stenosis (SVAS) and peripheral pulmonary artery stenosis (PPAS) are common vascular abnormalities in WS. The natural course of SVAS and PPAS is variable, and the timing of surgery or intervention is determined according to the progression of vascular stenosis. In our patient, SVAS and PPAS showed rapid concurrent progression within two weeks after birth. We report the early manifestation of SVAS and PPAS in the neonatal period and describe the surgical treatment for stenosis relief.

Vacuum-assisted Closure Therapy for Treating Patients with Severe Subcutaneous Emphysema (피하기종의 Vacuum-assisted Closure Therapy)

  • Oh, Tak-hyuk;Lee, Sang Cjeol;Lee, Deok Heon;Cho, Joon Yong
    • Journal of Trauma and Injury
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    • v.28 no.4
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    • pp.276-279
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    • 2015
  • Subcutaneous emphysema is a benign condition following trauma (pneumothorax and oropharyngeal), cervical or thoracic procedures, and mediastinal infection. However, severe subcutaneous emphysema may be related to serious complications such as respiratory failure, airway compromise, and tension- related phenomena. Many alternative therapies have been tried to treat patients with this condition. We report our experience with vacuum-assisted closure therapy for treating patients with severe subcutaneous emphysema.

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Effect of Ag Powder Sources on the Patterning of PDP Electrodes

  • Woo, Chang-Min;Kim, Soon-Hak;Hur, Young-June;Kim, Duck-Gon;Song, Gab-Duk;Lee, Yoon-Soo;Cho, Ho-Young;Park, Lee-Soon
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.953-955
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    • 2006
  • In this work we compared different sources of composition of Ag powders obtained by dry and wet process on the photolithographic patterning of PDP electrode and resistance of sintered Ag electrode. It was found that 90 : 10 wt% ratio of Ag powder made by dry and wet processes gave optimum result both on the PDP electrode pattern and resistance of PDP electrode after sintering.

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Endovascular Salvage for Traumatic Midthoracic Aortic Rupture with Left Diaphragmatic Injury

  • Son, Shin-Ah;Oh, Tak-Hyuk;Kim, Gun-Jik;Lee, Deok Heon;Lim, Kyoung Hoon
    • Journal of Trauma and Injury
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    • v.31 no.2
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    • pp.66-71
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    • 2018
  • Patients with traumatic aortic rupture rarely reach the hospital alive. Even among those who arrive at the hospital alive, traumatic aortic rupture after high-speed motor vehicle accidents leads to a high in-hospital mortality rate and is associated with other major injuries. Here, we report a rare case of descending midthoracic aortic rupture with blunt diaphragmatic rupture. Successful management with emergency laparotomy after an immediate endovascular procedure resulted in a favorable prognosis in this case.