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Kyung-Chang Ryoo,Jeong-Hoon Oh,Sunghun Jung,Sang Wan Kim,Min-Chul Sun,Garam Kim,Hyun Woo Kim,Dae Woong Kwon,Ji Soo Jang,Jang Hyun Kim,Hongsik Jeong,Byung-Gook Park 대한전자공학회 2010 ICEIC:International Conference on Electronics, Inf Vol.1 No.1
Relationships of resistive switching characteristics are investigated for NiO based Resistive Switching Random Access Memory (RRAM) by adapting cross-pointed structure. In order to evaluate high-density RRAM with low switching current, we have shown that there are important relationships between various analytical parameters and reset current reduction. We examine different initial switching behaviors and test various factors that cause them. Through these relationships, we confirm that significant reset current reduction is possible by controlling the initial cell fabrication process which results in stabilization of cell interface.
최욱진,하영록,오제혁,조영순,Won Woong Lee,손유동,조규종,Chan-Young Koh,도한호,정원준,Seung Mok Ryoo,Jae Hyun Kwon,Hyung Min Kim,Su-Jin Kim,Chan Yong Park,이진희,Jae Hoon Lee,Dong Hyun Lee,SIN-YOUL PARK,Bo Seung Kang 대한의학회 2020 Journal of Korean medical science Vol.35 No.7
Point-of-care ultrasound (POCUS) is a useful tool that is widely used in the emergency and intensive care areas. In Korea, insurance coverage of ultrasound examination has been gradually expanding in accordance with measures to enhance Korean National Insurance Coverage since 2017 to 2021, and which will continue until 2021. Full coverage of health insurance for POCUS in the emergency and critical care areas was implemented in July 2019. The National Health Insurance Act classified POCUS as a single or multiple-targeted ultrasound examination (STU vs. MTU). STU scans are conducted of one organ at a time, while MTU includes scanning of multiple organs simultaneously to determine each clinical situation. POCUS can be performed even if a diagnostic ultrasound examination is conducted, based on the physician's decision. However, the Health Insurance Review and Assessment Service plans to monitor the prescription status of whether the POCUS and diagnostic ultrasound examinations are prescribed simultaneously and repeatedly. Additionally, MTU is allowed only in cases of trauma, cardiac arrest, shock, chest pain, and dyspnea and should be performed by a qualified physician. Although physicians should scan all parts of the chest, heart, and abdomen when they prescribe MTU, they are not required to record all findings in the medical record. Therefore, appropriate prescription, application, and recording of POCUS are needed to enhance the quality of patient care and avoid unnecessary cut of medical budget spending. The present article provides background and clinical guidance for POCUS based on the implementation of full health insurance coverage for POCUS that began in July 2019 in Korea.
CHO, Sung June,SEO, Yong Seog,RYOO, Min Woong,RYU, In Soo,SONG, Kwang Sup,KANG, Sung Kyu 공주대학교 자원재활용 신소재 연구센터 1999 1차년도 센터 성과집 Vol.1999 No.-
We had developed a newly improved textile coating process with much decrease of the emission of volatile organic compound (VOC), toluene, using catalytic combustion technology, temperature swing adsorption method (TSA) and electrically heated catalyst system (EHC). Catalytic bumer was designed to adopt a duplication of forced diffusion combustion and premixed combustion. Low concentration VOC was accumulated to reach more than 1000ppm using TSA and heat exchanger. Without air pollution, the concentrated VOC was incinerated in EHC to produce heat. The remained VOC was used as a renewable energy source for textile drying. Substantial benefits were found in this coating process : significant reduction of VOC and energy saving.
황동이 피복된 코드의 표면 상태가 배합고무와 코드의 접착에 미치는 영향
서곤,류민웅,전대진,손봉영 ( Gon Seo,Min Woong Ryoo,Dae Jin Jeon,Bong Young Sohn ) 한국공업화학회 1994 공업화학 Vol.5 No.6
80℃에서 열처리하거나, 80℃와 상대습도 85%인 습도 조건에서 처리한 황동이 피복된 강선 코드의 표면 상태와 고무와 접착 성질을 조사하였다. 열처리로 황동의 산화가 진행되었으며, 습윤처리 후에는 더 심하게 산화되었다. 처리기간이 길어질수록 전처리한 코드의 접착 성질이 나빠졌으며, 고무부착 정도가 심하게 저하되었다. 황동 피복층의 산화로 인한 코드의 접착 성질 저하를 산화아연층의 과도한 성장과 연계지어 설명하였다. Adhesion between cord and rubber compound of brass plated steel cords pretreated at 80℃ in air and at 80℃ and 85% of relative humidity was studied. Surface change of brass with pretreatment was also studied. Brass was oxidized at thermal treatment and oxidation was accelerated with water at humid treatment. Adhesion of pretreated cords decreased with treatment period. The decreasing tendency of rubber coverage was severe. Decrease in adhesion properties due to brass oxidation was discussed relating to the overgrowth of zinc oxide layer.
A Catalytic Combustion Technolog~y of Concentrated VOCs in Textile Coating Process
Cho, Sung June,Song, Kwang Sup,Ryoo, Min Woong,Kang, Sung Kyu,Lee, Jae Hoon 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.4
We developed a new process employing catalytic combustion for textile coating aimed at decreasing emissions of volatile organic compounds (VOCs) and saving energy at the same time. For this purpose, the VOCs are concentrated in a temperature swing adsorption (TSA) device. A fraction of the concentrated VOCs is completely oxidized on an electrically heated (EHC) system, and its combustion gas of EHC is supplied as the heating source via heat exchangers. The remaining concentrated VOC is recycled as a renewable energy source for the drying process to dual-type catalytic burners designed specially to operate with LPG and concentrated VOC at the same time. This system minimizes the problem of VOC emission and maximizes energy conservation by reusing the VOC, toluene, from textile coating.
Catalytic Combustion Technology of Concentrated VOCs in Textile Coating Process
Kang, Sung Kyu,Cho, Sung June,Lee, Jae Hoon,Song, Kwang Sup,Ryoo, Min Woong 공주대학교 자원재활용 신소재 연구센터 1999 1차년도 센터 성과집 Vol.1999 No.-
We developed a new process employing catalytic combustion for textile coating aimed at decreasing emissions of volatile organic compounds (VOCs) and sabing energy at the same time. For this purpose, the VOCs are concentrated in a temperature swing adsorption (TSA) device. A fraction of the concentrated VOCs is completely oxidized on an electrically heated (EHC) system. and its combustion gas of EHC is supplied as the heating source via heat exchangers. The remaining concentrated VOC is recycled as a renewable energy source for the drying process to dual-type catalytic burmers designed specially to operate with LPG and concentrated VOC at the same time. This system minimizes the problem of VOC emission and maximizes energy conservation by reusing the VOC, toluene. from textile coating.