http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김형택 대한마취과학회 1969 Korean Journal of Anesthesiology Vol.2 No.1
The patient was scheduled for subtotal gastrectomy and was premedicated with morphine 10 mg and atropine 0.4 mg. For induction of anesthesia 200mg of thiopental were injected intravenously. A number 34 French cuffed endotracheal tube was passed into the trachea under direct vision following I.V.S.C.C. 60 mg. Anesthesia was maintained with ether oxygen without difficulty. Approximately one hour and thirty minutes following induction of anesthesia tbere was a complete airway obstruction due to overinflation of endotracheal cuff. The following precautions should be considered; 1. Prompt recognition or cause, prevention and treatment of airway obstruction. 2. A thorough examination of endotracheal tubes before use. 3. The use of endotracheal intubation never guarentees a patent airway. 4. A suction catheter passed through the endotracheal tube just after intubaon is valuable methcde for the recognition of air way obstruction.
A Comparison of Simulation Characteristics of VacCAD and VacTran as Vacuum Simulator
김형택 한국인터넷방송통신학회 2023 International journal of advanced smart convergenc Vol.12 No.4
In this study, we compared the VacCAD and VacTran, commercial vacuum simulators, to investigate the simulation applicability and efficiency as vacuum simulation software. It was verified on reliability and simplicity of simulation modelling, and characteristics of the pump combinations, pumping down curves, and employed vacuum materials. First, usability of simulation schematics was estimated through the modeling tools and the overall simulation characteristics of each simulator were compared to evaluate the applicability in practice. Simulation reliability of each simulator was also probed by comparing the pumping performance characteristics of commercial high vacuum system models. In addition, the degree of tolerances on both simulators was also evaluated through pumping down analysis considering outgassing effect due to chamber material variations. The higher effectiveness and expediency of VacCAD than VacTran has been presented, and it was also expected that the utilization of VacTan in vacuum applications to be increased due to the higher availability of modelling variations.
Simulation of outgassing effects of vacuum materials on vacuum characteristics
김형택,김영석 한국반도체디스플레이기술학회 2009 반도체디스플레이기술학회지 Vol.8 No.1
The outgassing effects of selected vacuum materials on the vacuum characteristics were simulated by the VacSimMulti simulation tool. This investigation examined the feasibility of reliably simulating the outgassing characteristics of common vacuum chamber materials (aluminum, copper, stainless steel, nickel plated steel, Viton A). The optimum design factors for these vacuum systems were suggested based on the simulation results. The baking-out effects of the modeled systems and materials on the performance of the vacuum system were also analyzed. The simulation predicted that the overall outgassing effect was more significant in the TMP system than in the DP system and that the utilization of a booster pump has a greater effect on the evacuation time than on the ultimate pressure.
디스플레이공정 진공시스템 밸브응용에 따른 진공특성 전산모사
김형택 한국인터넷방송통신학회 2012 한국인터넷방송통신학회 논문지 Vol.12 No.2
진공 시스템의 성능에 대한 밸브 컨덕턴스의 영향은 진공시스템의 설계 최적화를 위해 전산모사 되었다. 본 연구에서는, 전산모사기인 VacSimMulti 에 의한 모델링기구가 제시되었다. 진공 시스템의 설계는 진공 장비의 다양한 산업적 구현을 위해 특정한 프로세스 조건을 충족해야 한다. 진공 밸브의 구조, 길이, 직경 등은 컨덕턴스 영향의 전산모사 변수로서 모델링 되었으며, 직렬 진공 시스템의 배기 밸브 또한, 다양한 크기와 구조로 모델링하여 전산모사 되었다. 밸브 직경의 변화는 도관의 길이의 변화보다 진공특성에 있어 더 유의미한 효과를 보여주었으며 슬릿형의 밸브도관 시스템은 모델링된 밸브구조 중 가장 뛰어난 진공특성을 가지는 것으로 관찰 되었다. Effect of valve conductance on performance of vacuum system was simulated for optimum design of vacuum system. In this investigation, the feasibility of modeling mechanism for VacSimMulti simulator was proposed. Application specific design of vacuum system is required to meet the particular process conditions for various industrial implementations of vacuum equipments. Geometry and length, diameter of vacuum valve were modeled as simulation modeling variables for conductance effects. Series vacuum system was modeled and simulated with varied dimensions and structures of exhaust valves. Variation of valve diameter showed the more significant effects on vacuum characteristics than that of pipeline length variations. It was also observed that the aperture structure of valve had the superior vacuum characteristics among the modeled systems.
김형택,최병철,권혁보 한국에너지학회 1999 에너지공학 Vol.8 No.4
본 논고에서는 석탄의 화학조성, 입도 및 광물질 종류들에 따라 중금속 선분들의 고온 거동을 해석하여 대규모 석탄화력발전소의 중금속화합물 배출규제기준결정과 관련된 기초자료를 제공하고자 시도하였다. 먼저 , Sb. Ca, Pb, Ni, As, Cr, Mg, Se, Be Co, Hg,Mn, Cd Ti, Zn 등 원소들의 휘발성을 석탄에 포함된 광물질의 고온거동을 조사하여 분석한 결과 중금속물질 배출정도는 광물질들의 고온상 기체/고체 분포 여부 및 광물질들의 고온에서의 변이 과정과 밀접한 관계가있는 것으로 인식되었다. 또한 , 반응후 중금속물질들의 비산재와 슬랙에의 존재분포를 입도별로 해석하였으며, 그 결과는 EF enrichment factor를 이용하여 해석하였다.
김형택,신영균,천원기 한국에너지학회 2001 에너지공학 Vol.10 No.1
전력 사업 구조 개편과 전력계통 신뢰도에 대한 우려 증대, 풍부하고 저렴한 천연가스, 새로운 대기 오염 규제, 부정전전원의 가치 증대로 인하여 분산형 발전의 수요가 증가하고 있다. 본고에서는 미국의 사례를 중심으로 분사형 전원의 현황을 개략적으로 살펴보고 핵심기술인 왕복동엔진, 가스터빈, 마이크로터빈, 연료전지, 태양광발전 기술들의 특징, 장점, 경제성 등을 서술하고 이 기술들의 활용범위 및 분산형 시스템으로서의 적합성에 대하여 논하며 관련 연구개발, 기존 전력망과의 연계, 문제점과 전망에 대해서 살펴보고자 한다.