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양철진(Chul-Jin Yang),배준석(Jun-Seok Bae),변호석(Ho-Seok Byun),이강휘(Kang-Hwi Lee),이종식(Jong-Sik Lee) 한국지반신소재학회 2018 한국지반신소재학회 논문집 Vol.17 No.1
제철 공정에서 발생되는 부산물인 용선 슬래그를 재활용하여 활성제를 융합한 표층처리공법용 고화재를 개발하는 연구를 수행하였다. 연구 목적은 폐기 또는 매립되는 제철소의 용선 슬래그를 재활용하여 자원 순환 및 고화재의 기능성을 부여하고 토양의 유실, 침하, 싱크홀 등의 기초지반의 강도 및 내구성을 향상하여 표층토양의 문제점 해결하는데 있다. 이를 위하여 용선슬래그 및 활성재를 융합한 고화재를 가지고 압축강도, 유해물질용출시험, 투수계수 시험을 통해 용선슬래그의 고화재원료로서의 사용 가능성을 평가하였다. 압축강도 시험 결과 고화재 혼합률이 12%인 고화토의 양생 28일 강도의 값이 각각 0.93, 0.96, 1.3MPa의 값으로 본 연구 개발 고화재의 소요강도 값인 1MPa에 만족하는 값을 나타내었으며, 투수계수의 경우에는 고화재 혼합률 12%에서 각각 4.1×10<SUP>-8</SUP>, 7.0×10<SUP>-7</SUP>, 1.7×10<SUP>-7</SUP> cm/sec로 최소값을 나타내었다. 또한 유해물질용출시험 결과 6가 크롬 항목에서 미소량 검출되었지만 함유기준을 만족하였으며, 나머지 항목에서는 중금속이 용출되지 않았다. We conducted research to develop a solidification agent for the ground surface reinforcement method in which activator is fused by recycling pig iron slag, which is a byproduct generated in the steel making process. The purpose of this research is to solve the problems of surface soil by improving the strength and durability of foundation soil such as soil loss, settlement, sinkhole, etc. by recycling pig iron slag from disused or landfilled steelworks. For this purpose, the possibility of using pig iron slag as a solidification soil was evaluated by the compressive strength, elution test of harmful materials, permeability coefficient test. As a result of the compressive strength test, the values of the strength of the curing 28 days of the solidified soil having the solidification agent mixing ratio of 12% were found to be 0.93, 0.96 and 1.3 MPa, respectively, satisfying the required strength value of 1 MPa, In the case of permeability coefficients, the minimum values were 4.1 × 10<SUP>-8</SUP>, 7.0 × 10<SUP>-7</SUP>, and 1.7 × 10<SUP>-7</SUP> cm/sec, respectively, at the solidification agent mixing rate of 12%. In addition, as a result of the elution test of harmful materials, a small amount was detected in the item of hexavalent chromium but satisfied the inclusion criteria, and in the remaining items, heavy metals were not eluted.
Propofol을 장시간 정맥 주사한 환자에서 발생한 녹색뇨 1례 -증례보고-
이영철 ( Young Chul Lee ),이종남 ( Jong Nam Lee ),배준석 ( Jun Seok Bae ),박영철 ( Young Chul Park ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.56 No.3
The color of urine in patients who receive anesthetic gives much medical information to a medical team. So, we must check the urine color and know the cause of discoloration of the urine from anesthetic patients. Green urine is rare indeed and it is a benign potential side effect of propofol; this phenomenon is related to the metabolism of propofol. We experienced green urine from a long-term anesthetized patient who received a continuous infusion of propofol. We report here on this unusual case and we review the relevant literature. (Korean J Anesthesiol 2009; 56: 325∼7)
암모니아와 물 존재 하에서 전자빔조사에 의한 SO₂ 및 NO_x의 동시제거를 위한 연속건식공정
배준석,김혜영,김병남,원양수,한도훙 한국공업화학회 2004 응용화학 Vol.8 No.2
An electron beam radiation technology was adapted to remove SO₂ and NO_(x) simultaneously, which leaded to the production of an ammonium sulfate and an amonium nitrate in an existence of ammonia and water or ammonium hydroxide. Removal efficiencies of both SO₂ and NO_(x) were influenced by irradiated dose, inlet gaseous temperature and concentrations of water and ammonia (or ammonium hydroxide). The removal efficiency of SO₂ and NO_(x) could reach up to 95% at 10 - 20 kGy, when adding ammonia or ammoniun hydroxide with at least more than the stoichiometric ratio based on SO₂ and NO_(x) concentrations. In gas flow rates ranged from 2.5 to 20 liter/min, the removal efficiencies of SO₂ and NO_(x) showed nearly unchangeable values. The optimum reaction temperature were ranged from 90 to 100 ℃.
소아의 편도절제술에서 Propofol 마취가 각성시 격앙 (Agitation)의 빈도를 줄여주는가 ?
김경운,배준석,이종남,박영철 대한정맥마취학회 2001 정맥마취 Vol.5 No.2
Background: Pediatric tonsillectomy may be associated with a high incidence of emergence agitation. Propofol anesthesia is known to reduce the incidence of emergence agitation compared with inhalation anesthesia. In this study, we examined the incidence of emergence agitation of total intravenous anesthesia (TIVA) with propofol and inhalation anesthesia with enflurane. Methods: Sixty children aged from 3 to 7 years undergoing tonsillectomy were randomly assigned to one of E group (enflurane-N_2O, n = 30) or P group (propofol, n = 30). In group E, anesthesia was induced with 5.0 ㎎/㎏ of thiopental sodium, and then tracheal intubation was performed after administration of 0.1 ㎎/㎏ of vecuronium. Anesthesia was maintained with enflurane-O_2-N_2O. In group P, anesthesia was induced with 3.0 ㎎/㎏ of propofol, tracheal intubation was performed after administration of 0.1 ㎎/㎏ of vecuronium, and was maintained with continuous infusion of propofol 100-400 ㎍/㎏/min. Agitation was defined as inconsolable crying and combative thrashing. Exubating and emergence time were also recorded. Results: Extubating and emergence time were significantly faster in the propofol group compared with enflurane group. Incidence of agitation was significantly lower in the propofol group (3 case of 30 case, 10%) than in enflurane group (23 case of 30 case, 77%). Conclusions: We conclude that TIVA with propofol was effective in reducing the incidence of emergence agitation following pediatric tonsillectomy compared with inhalation anesthesia.