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2차원 스토커 소각론의 SNCR 탈질기술개발에 대한 수치해석
신미수,유승민,유재관,장동순,김동찬 충남대학교 환경문제연구소 2000 環境硏究 Vol.18 No.-
In this study was the stoker incinerator system with SNCR(Selective Non-Catalytic Reduction). While this system was favored with the view of the possibility of the reducing waste volume and recovery of waste heat, it also has a disadvantage, that is, the need for the second to treat dust, HCl, CO, etc. So far, even though a great deal of research had been done, the study on heat-flow analysis with reduction model and NO reduction with SNCR had not been investigated enough. The temperature distribution in the system and excess amount of oxygen influence the efficiency of NO reduction, resolution in the production, resolution in the production of NO at 1700K and the temperature range of 1200-1250K when the highest NOx reduction efficiency occurred. Hence, this study was focused to flow mixing pattern and NOx reduction efficiency as the flue gas velocity, NH3 injection velocity, particle size and particle density.
Endoscopic submucosal tunnel dissection salvage technique for ulcerative early gastric cancer.
Choi, Hyuk Soon,Chun, Hoon Jai,Seo, Min Ho,Kim, Eun Sun,Keum, Bora,Seo, Yeon Seok,Jeen, Yoon Tae,Lee, Hong Sik,Um, Soon Ho,Kim, Chang Duck,Ryu, Ho Sang WJG Press 2014 WORLD JOURNAL OF GASTROENTEROLOGY Vol.20 No.27
<P>Endoscopic submucosal dissection is an effective treatment modality for early gastric cancer (EGC), though the submucosal fibrosis found in ulcerative EGC is an obstacle for successful treatment. This report presents two cases of ulcerative EGC in two males, 73- and 80-year-old, with severe fibrosis. As endoscopic ultrasonography suggested that the EGCs had invaded the submucosal layer, the endoscopic submucosal tunnel dissection salvage technique was utilized for complete resection of the lesions. Although surgical gastrectomy was originally scheduled, the two patients had severe coronary heart disease, and surgeries were refused because of the risks associated with their heart conditions. The endoscopic submucosal tunnel dissection salvage technique procedures described in these cases were performed under conscious sedation, and were completed within 30 min. The complete en bloc resection of EGC using endoscopic submucosal tunnel dissection salvage technique was possible with a free resection margin, and no other complications were noted during the procedure. This is the first known report concerning the use of the endoscopic submucosal tunnel dissection salvage technique salvage technique for treatment of ulcerative EGC. We demonstrate that endoscopic submucosal tunnel dissection salvage technique it is a feasible method showing several advantages over endoscopic submucosal dissection for cases of EGC with fibrosis. (C) 2014 Baishideng Publishing Group Inc. All rights reserved.</P>
Ryu, Jai Min,Kang, Goeun,Nam, Seok Jin,Kim, Seok Won,Yu, Jonghan,Lee, Se Kyung,Bae, Soo Youn,Park, Sungmin,Paik, Hyun-June,Kim, Jong-Won,Park, Sung-Shin,Lee, Jeong Eon,Kim, Sung-Won Elsevier 2017 The Breast Vol.33 No.-
<P><B>Abstract</B></P> <P><B>Purpose</B></P> <P>We describe a rationale for the re-classification of the BRCA1 c.5539T>C (L1780P) variant using a clinical evidence.</P> <P><B>Methods</B></P> <P>A retrospective review was conducted to identify all patients with breast or ovarian cancer and the L1780P variant between 2002 and 2015 at a single institution.</P> <P><B>Results</B></P> <P>We identified the BRCA1/2 genetic mutation test results of 1223 breast cancer patients and 174 patients with ovarian cancer. Of the 160 BRCA 1/2 variant unknown significance, 16 (10.0%) patients were identified as having the L1780P variant. Among them, 10 had breast cancer, 4 had ovarian cancer, and 2 had both breast and ovarian cancer. Thirteen (81.3%) patients with this variant had family histories of breast or ovarian cancer. Two (16.7%) also had comorbid ovarian cancer. Two patients with this variant showed that co-segregation of the disease in multiple family members and family histories of breast and ovarian cancer. This variant was found to be either absent or at extremely low frequency in general population databases.</P> <P><B>Conclusion</B></P> <P>The L1780P variant might confer to “Likely pathogenic” according to a clinical evidence and the ACMG standards and guidelines. A nation-wide or global survey and a functional analysis are needed to confirm the pathogenicity of the L1780P variant.</P>