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건물용 독립형 1kW급 PEMFC-배터리 하이브리드 시스템 기술 개발
양석란,김중석,최미화,Yang, Seug Ran,Kim, Jung Suk,Choi, Mi Hwa 한국전력공사 2019 KEPCO Journal on electric power and energy Vol.5 No.2
We have developed 1 kW-class PEMFC-battery hybrid system independently powering to the building, through the process of system design, current load characteristics analysis, power system configuration for demonstration site and performance evaluation. In order to use the fuel cell and battery as the hybrid type, a control technology for the charging/discharging decision and charging speed of the battery is required rather than using fuel cell. Also output power distribution between PEMFC and the battery is a core of energy management technology. It is confirmed that it is possible to supply independently 1kW powering the building to ensure optimal energy management through the power control experiment of the hybrid system.
자궁내막증 환자의 복강액의 Interleukin-8에 관한 연구
강성원,이한범,강정배,김홍배,정태범,김중석,이근영 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.8
Objective : This study was investigated to know the relationship between the level of interleukin-8(IL-8) in the peritoneal fluid of women with and without endometriosis Design : Prospective and case-control study. Setting : University hospital. Patients : Twenty six patients who had been confirmed endometriosis by operative and pathological findings were studied. The another twenty six women with benign gynecologic disease except endometriosis was studied by control groups. Main outcome and Measures : IL-8 levels in peritoneal were determined using commercial ELISA set. IL-8 concentration were compared between women with and without endometriosis, and also compared according to severity of endometriosis by which was graded the revised American Fertility Society classification. Results : IL-8 concentration was higher in the peritoneal fluid of women with endometriosis than in matched controls. The concentrations in the proliferative phase were higher than those in the secretory phase. IL-8 concentration in endometriosis stage III, IV were significant higher than stage I, II. Conclusions : Increased level of IL-8 in peritoneal fluid of patients with endometriosis may be related to the pathogenesis of endometriosis that partially contribute to the disturbed immune response.