• Title/Summary/Keyword: Refractory

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High Volume Mineral Admixture Mortar According to Waste Refractory and Mixing Ratio (저미분 폐내화물 종류 및 혼입율 변화에 따른 혼화재 다량치환 모르타르의 공학적 특성)

  • Han, Sang-Yoon;Park, Do-Young;Cha, Cheon-Soo;Kim, Hyun-Woo;Yoon, Gi-Won;Han, Cheon-Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.11a
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    • pp.134-135
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    • 2015
  • This study analysed compressive strength and the expansion characteristic to utilize a high volume mineral admixture mortar for a aerated mortar and a plastering mortar. In this experiment, the result shows that the compressive strength gain was satisfactory in case that WR was replaced within 5%. Also, the difference between WR1 and WR was insignificant. It shows that the drying shringkage properties at large was showed being satisfactory generally compared with Plain when WR was replaced, but the effect was not significant.

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Dimethoate Intoxication with Refractory Shock and Hyperglycemia (치료에 불응하는 지속적 저혈압과 고혈당 상태를 보인 dimethoate 중독 1례)

  • Kim, Jae-Eun;Jung, Jin-Hee;Bae, Hyun-A;Eo, Eun-Kyung
    • Journal of The Korean Society of Clinical Toxicology
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    • v.5 no.1
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    • pp.46-49
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    • 2007
  • Organophosphorus insecticides induce different clinical manifestations varying according to the different side groups attached to the phosphate, their rates of degradation, and their fat solubilities. In consequence of this variation, specific treatments are required for particular organophosphorus insecticides. We report a unusual case of intoxication with dimethyl organophosphorus insecticide in a 26-year-old woman. She manifested atypical and ultimately fatal symptoms including profound shock, refractory hyperglycemia, and hypothermia.

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Effect of Mullite on High Alumina Refractory (II) (고 알루미나질 내화물에 미치는 Mullite의 영향(II))

  • 김세훈;김인섭;박주석;강지연;이경희;이병하
    • Journal of the Korean Ceramic Society
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    • v.38 no.3
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    • pp.238-244
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    • 2001
  • 본 연구에서는 Seed 첨가법에 의하여 제조된 mullite(Syn M)와 외국산 mullite 2종류(sintered mullite : SM, fused mullite : FM)를 고알루미나질 내화물 원료에 적용하여 내화물 시편을 제조하였으며 mullite에 따른 결정상, 미세구조, 부피비중, 강도를 조사하였다. SM, FM, Syn M의 mullite 함유량은 93.17%, 86.79%, 97.57%이었으며 mullite를 15 wt% 첨가하여 제조한 시편의 물성을 조사한 결과 Syn M을 함유한 시편이 꺾임강도 338.60 MPa, 압축강도 9,427kgf/$\textrm{cm}^2$을 나타내었다. 외국산 mullite를 첨가한 시편의 강도는 Syn M을 첨가한 것보다 약 5~10% 정도 낮은 강도를 보였다.

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Refractory Coronary Artery Spasm after Minimally Invasive Direct Coronary Artery Bypass Grafting

  • Ju, Min-Ho;Kim, Joon-Bum;Kim, Hee-Jung;Choo, Suk-Jung
    • Journal of Chest Surgery
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    • v.44 no.4
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    • pp.288-291
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    • 2011
  • Postoperative coronary arterial spasm is a rare but potentially fatal complication. A 51-year-old male patient with a history of a reactive ergonovine stress test coronary angiogram developed refractory coronary artery spasm after undergoing minimally invasive direct coronary artery bypass grafting of the left anterior descending coronary artery. The patient was successfully managed with rapid implementation of intra-aortic balloon-pump counter pulsation and extracorporeal membrane oxygenation.

Postoperative Automatic Junctional Tachycardia treated with Amiodarone (Amiodarone으로 치료한 postoperative automatic junctional tachycardia)

  • 이택연
    • Journal of Chest Surgery
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    • v.25 no.9
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    • pp.905-911
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    • 1992
  • Automatic junctional tachycardia is one of common atrial arrhythmia after open heart surgery which is often refractory to antiarrhythmic agents. We have experienced refractory automatic junctional tachycardia in two patients. In the first, it occured after cryosurgery for AV nodal reentry tachycardia and simultaneous dissection of a posterior septal bypass tract. In the second, it complicated the postoperative course of a patient who received intracardiac repair for double outlet right ventricle, ventricular septal defect, and pulmonary stenosis. Conventional therapy with atrial pacing, verapamil, digoxin, and electrical cardioversion were ineffective. Therefore, amiodarone was administered intravenously and it controlled automatic junctional tachycardia. The need for accurate and rapid diagnosis of this condition along with results of treatment are discussed.

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