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조현석,조원철,김상경,김창희 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
최근 재생에너지원의 보급확대에 따라 수전해 기술을 이용하여 변동성이 큰 재생전력을 안정화하고, 이용률을 높이는 패키지 기술이 주목받고 있다. 수전해 장치의 재생에너지 연계를 위해서는 핵심부품인 스택의 낮은 전력소모량과 동시에 수소생산밀도의 향상이 필요하고, Start-Up/Shut-Down(SU/SD) 반복 또는 저부하 운전시 생성된 산소와 수소의 가스혼합에 따른 안정성을 확보하는 것이 요구된다. 부하변동 대응형 수전해 스택개발을 위해서는 1) SU/SD반복운전에 따른 수소/산소 발생 전극의 열화 대응 소재 및 구조설계, 2) 넓은 운전범위 확보를 위한 가스확산 저감 분리막, 3) 고효율 산소/수소 발생반응 전극, 4) 전해질 공급 및 가스배출 최적화를 위한 다공체 분리판, 4) 빠른 동특성 확보를 위한 셀 구조설계 및 운전기술 확보 등이 요구된다. 본 발표에서는 위 각각의 내용에 대한 한국에너지기술연구원 수소연구실에서 진행되고 있는 연구 및 개발내용을 논의하고자 한다.
조현석,이현진,김종규,이상남,강용혁,Cho, Hyun-Seok,Lee, Hyun-Jin,Kim, Jong-Kyu,Lee, Sang-Nam,Kang, Yong-Heack 한국태양에너지학회 2012 한국태양에너지학회 논문집 Vol.32 No.suppl3
It is important to produce the high-temperature and high-pressure air for the concentrated solar power system using the combined cycle. In this paper, we designed two types of tubular receivers to heat up the compressed air and provided their preliminary experimental results for performance evaluation and further improvements. The developed receivers are in a square cavity shape surrounded by flow conduits for easy scale-up and radiation loss reduction. The two receivers were tested with 5 bar air in the KIER solar furnace and evaluated in terms of the outlet temperature and the efficiency.
조현석,권재우 대한내과학회 2019 The Korean Journal of Internal Medicine Vol.34 No.3
Background/Aims: Despite the clinical importance anaphylaxis and the recent increase in its occurrence, studies regarding the epidemiology of anaphylaxis, risk factors for anaphylaxis, and epinephrine auto-injector (EAI) prescription status for patients with anaphylaxis remain poorly described. Thus, we investigated the prevalence of anaphylaxis and prescription rates of EAI in urban and rural areas in Korea. Methods: We used data from the 2010 to 2014 Health Insurance Review and Assessment database. Anaphylaxis was identified through physician-certified diagnoses using the International Classification of Diseases 10th (ICD-10) codes (T780, T782, T805, T886). Data on prescription rates of EAI were collected from the Korea Orphan & Essential Drug Center, the only pharmacy exclusively dealing with EAI in Korea. The prescription rates of EAI were defined as the number of EAI prescribed against the number of patients with anaphylaxis. Results: The prevalence of anaphylaxis over the 5-year period was 0.023%. The annual prevalence of anaphylaxis increased over the 5-year period. Anaphylaxis was more common in males than in females (54% vs. 46%) and in the population aged 50 to 59 years old. For regional analysis, urban areas showed a relatively lower prevalence of anaphylaxis (17.3 per 100,000 individuals) along with higher prescription rates (12.0%) of EAI for patients with anaphylaxis. In contrast, rural areas showed a relatively higher prevalence of anaphylaxis (28.8 per 100,000 individuals) along with lower prescription rates (3.1%) of EAI. Conclusions: The prevalence of anaphylaxis has increased annually in Korea. There were regional differences in the prevalence of anaphylaxis and prescription rates of EAI between urban and rural areas in Korea.
조현석,이현진,김종규,이상남,강용혁 한국태양에너지학회 2012 한국태양에너지학회 논문집 Vol.32 No.3
It is important to produce the high-temperature and high-pressure air for the concentrated solar power system using the combined cycle. In this paper, we designed two types of tubular receivers to heat up the compressed air and provided their preliminary experimental results for performance evaluation and further improvements. The developed receivers are in a square cavity shape surrounded by flow conduits for easy scale-up and radiation loss reduction. The two receivers were tested with 5 bar air in the KIER solar furnace and evaluated in terms of the outlet temperature and the efficiency.
지역 사회 응급체계 구성원들의 아나필락시스에 대한 인지도 조사
조현석,김상하,이지호,김봉성,이정민,김자경,박진성,권재우 대한 소아알레르기 호흡기학회 2020 Allergy Asthma & Respiratory Disease Vol.8 No.3
. Purpose: Anaphylaxis is life-threatening, so early recognition and proper response are critical. This study evaluated the awareness of anaphylaxis in Korean community including teachers, 119 rescue team, and doctors in public service. Methods: A questionnaire of anonymously structured 9 items about anaphylaxis was administered to the teachers working in kindergartens or elementary schools, 119 rescue team, and public health physicians in Gangwon province in 2017. Additional questionnaire about knowledge on anaphylaxis management was administered to the physicians. Results: A total of 415 people participated in the survey. About 4% of child care and health teachers experienced anaphylaxis within 1 year, but the overall awareness of anaphylaxis was very low, regardless of the educational level of anaphylaxis. 119 rescue teams experienced more anaphylactic patients, but they lacked knowledge of epinephrine administration and epinephrine autoinjector (EAI), independent of the educational level of anaphylaxis. Public health physicians had good knowledge of early treatment for anaphylaxis, but there was a lack of knowledge for epinephrine injection sites, observation plan, and EAI. Conclusion: The awareness of anaphylaxis among community and emergency responders seems likely to be inadequate. Systematic and continuous education by anaphylaxis specialists is necessary for community health care providers.