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신준호,배원길 대한소화기내시경학회 1998 Clinical Endoscopy Vol.18 No.6
Background/Aims: Since the laparoscopic cholecystectomy has been introduced, minimally invasive techniques have been applied to the management of various intraabdominal lesions. Laparoscopic resection of benign gastric tumor has several advantages compared to open surgery; such as reduced postoperative discomfort, early hospital discharge and less complications. Methods: We performed laparoscopic gastric resection for 6 benign gastric leiomyomas and 3 heterotropic gastric pancreases diagnosed by gastric endoscopy and did endoscopic ultrasonography routinely to find out the exact location of mass and depth of invasion. Results: 1) Male to female ratio was 2: 7 and mean age was 48 years. 2) The masses were located at posterior wall of body in 5 cases, fundus in 2 cases, anterior wall of antrum in 1 case, and enterior wall of body, lesser curvature in 1 case. 3) Resection of benign gastric tumors were readily achieved laparoscopically, aided by disposable stapling instruments. 4) Mean operation time was 120 minutes and mean hospital stay was 5.1 days. Conclusions: The benign gastric tumors can be managed laparoscopically with good results and this procedure provides another choice for the resection of them.
DLE(Direct Li Extraction) 기술 및 동향
신준호,정재민,류정호,방준환,김선경,류태공 한국자원공학회 2023 한국자원공학회지 Vol.60 No.5
The commercial supply of lithium has recently reached its limit, prompting active research into the recovery of lithium from low-grade brines, such as geothermal water and oil field brine, which contain lithium. The commercialized process that relies on natural evaporation and concentration, typically applied to high-grade brine, has limitations when applied to low-grade brine. As an alternative, direct lithium extraction (DLE) technology is being proposed. DLE technology employs non-evaporative lithium extraction methods, including precipitation, solvent extraction, and adsorption, to recover lithium from low-grade brines (with lithium concentrations less than 1000 ppm). This technology is gaining importance, because it can overcome the drawbacks of conventional methods, such as lengthy processing time and production limits. This paper discusses the development direction of DLE technology that can ensure environmental and economic feasibility, using an analysis of the current status and trends of lithium recovery technology.
휘발성 유기화합물 제거를 위한 제강슬래그로 제조된 세라믹 여재의 흡착효율
신준호,김태희,박경봉,Sin, Jun-Ho,Kim, Tae-Heui,Park, Kyung-Bong 한국결정성장학회 2010 韓國結晶成長學會誌 Vol.20 No.3
We studied the adsorption efficiency of steelmaking slag in removing volatile organic compounds (VOCs) for increasing the recycling rate of steel-making slag. Ceramic filter was prepared by mixing the steel-making slag and the diatomite which is used as adsorbents due to the advantage of the high specific surface area and regular mesopores. The adsorption efficiency for VOCs removal was about 80%, 96% and 85% in acetaldehyde, formaldehyde and ammonia, respectively. The adsorption efficiency over 80% for all The gases showed the practical possibility as the adsorption filter. 본 연구에서는 제강슬래그의 재활용 범위를 확대하기 위하여 제강슬래그를 접촉여재로 활용한 유기화합물의 흡 착성능을 평가하였다. 또한 표면에 미세한 기공을 가지고 있어 흡착여재와 여과필터로 많은 연구가 되어온 규조토를 제강 슬래그와 혼합하여 세라믹 여재를 만들고 유기화합물 흡착 특성을 평가하였다. 유기화합물로는 아세틸알데히드, 포름알데히드, 암모니아 기체를 사용하였으며, 각각 80%, 96%, 85%의 흡착 효율을 나타내었다. 사용된 모든 기체에 대해서 80% 이상의 흡착효율을 나타내어 흡착여제로의 활용 가능성을 확인할 수 있었다.