• Sleep Medicine and Psychophysiology
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• v.8 no.2
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• pp.144-147
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• 2001

Chemical restraint or "rapid tranquilization" is another option in treating patients who are a danger to themselves or others and struggle violently once physically restrained. The most commonly used drugs are benzodiazepines and antipsychotics. The use of benzodiazepines, either alone or in combination with high potency neuroleptics, has increased in recent years. Benzodiazepines are extremely safe but may cause respiratory depression and hypotension. Respiratory depression is more likely with intravenous administration, therefore these medications should be given slowly and titrated to the desired effect. Special care should be taken when sedating patients who are under the influence of alcohol or narcotics and are sleep apneic patients. This report deals with a case of respiratory distress in a patient with sleep apnea syndrome after the rapid tranqulization. All patients receiving chemical restraint must be carefully monitored. For critically ill patients who require sedation or chemical restraint, the constant attendance of a physician may be warranted.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.6 no.4
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• pp.439-451
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• 1994

A numerical model for harbour oscillation is presented by use of Galerkin finite element method. The governing equation is used by the modified mild slope equation derived from Chen (1986) in which bottom friction is incorporated. Since the existing absorbing boundary condition. however. is shown to be incorrect correct boundary condition and forcing term due to an incident plane wave are rederived. Computation results for a rectangular harbour are shown in comparison with both laboratory data and existing numerical results. After the values of friction factor (f) and reflection coefficient (K$_{r}$) are discussed, the set (K$_{r}$=0, 94, f=0) is found to be best fitted to the laboratory data of the rectangular harbour.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2009.06a
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• pp.158-160
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• 2009

선행되었던 연구인 실린더 슬릿형 소파블록 방파제에 대하여 실해역에서의 적용성을 평가하기 위하여 수치모델 해석을 통해 항내정온도를 분석하였다. 남해의 소규모 어항에 대해 파랑작용 평형방정식을 이용하는 SWAN 모델을 구성하고 수리모형실험에서 분석된 실린더형 슬릿 방파제의 투과율과 반사율을 도입하여 항내의 정온도의 변화를 불투과성 방파제와 비교하여 다루고 해수교환을 통한 해역수질환경의 개선 가능성을 예측해보았다. 수치실험은 한국해양연구원의 전해역 심해설계파 추정 보고서 II(2005)중의 심해설계파 제원을 사용하였으며, 대상해역의 1970년$\sim$2006년(37년간) 관측된 연최대 풍속자료를 이용하여 산정된 50년빈도 설계풍을 모델에 반영하였다. 대상 어항에서 서방파제에 주로 영향을 미치는 NNE계열의 파랑의 내습에 대한 분석을 수행하였으며, 그 결과 투과성구조물의 특성이 수치모형에서도 잘 재현하고 있음을 파악하였다.

• Applied Chemistry for Engineering
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• v.16 no.6
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• pp.749-754
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• 2005

For the binary system of methanol/3-methyl-1-butanol mixture vapor-liquid equilibrium data were measured isothermally at 50, 55, 60, 65, and $70^{\circ}C$. An empirical relation to predict vapor-liquid equilibrium data was obtained from the above measured data. The predicted values compared with the measured ones were in a good agreement, within accuracy ${\pm}0.0007$. The excess molar volume, measured for the binary system of methanol/3-methyl-1-butanol mixture, was positive $V^Eover$ the entire composition range. The maximum values were shown to be about $0.096cm^3/mol$ at x= 0.683.

• Fire Science and Engineering
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• v.24 no.6
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• pp.61-68
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• 2010

In this paper, a research and development result for the implementation of single station fixed temperature detector for residential fire prevention is described. The detector was developed for the certification in Japanese market because of very low domestic market situation. It is in the situation that there is no other regulation especially for residential detectors in Korea, Japanese case has been reviewed. Investigation of domestic legal circumstances and a comparative study for the test standard owned by KFI (Korea Institute of Fire Industry & Technology) and JFEII (Japan Fire Equipment Inspection Institute) respectively are also indicated. The detector alarms with a buzzer and an indicating LED. In the implementation ultra low power MCU(Micro Controller Unit) is applied to control the sleeping state and the monitoring state properly with low current consumption. To sense the temperature fast response thermistor is adopted in the design of fixed temperature residential detector. Automatic test function and alarm stop function are also considered in the design. The major factors which influence to current consumption are explained for the purpose of design reference. Main electronics circuit parts related to it's characteristics of the detector are described. It is explained that the measured current and experimental result of the battery discharge can be met over 10 years operation.

• Fire Science and Engineering
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• v.28 no.1
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• pp.37-43
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• 2014

The high predictive performance of fire detector models is essentially needed to assure the reliability of fire and evacuation modeling in the process of Performance-Based fire safety Design (PBD). The main objective of the present study is to measure input information in order to predictive the accurate activation time of fixed temperature heat detectors adopted in Fire Dynamics Simulator (FDS) as a representative fire model. To end this, Fire Detector Evaluator (FDE) which could be measured the device properties of detector was used, and the spot-type fixed temperature heat detectors of two thermistor types and one bimetal type were considered as research objectors. Activation temperature and Response Time Index (RTI) of detectors required for the fire modeling were measured, and then the RTI was measured for ceiling jet flow and vertical jet flow in consideration of the install location of detectors. The results of fire modeling using measured device properties were compared and validated with the experimental results of full-scale compartment fires. It was confirmed that, in result, the numerically predicted activation time of detector showed reasonable agreement with the measured activation time.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.32 no.5
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• pp.296-306
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• 2020

It has been reported that the wave heights measured by Wave and Tide gauges (WTG) have been underestimated, and thus it is important to improve its measuring accuracy for enhancing estimation of harbor tranquility. In this study, the significant wave heights from WTG were calibrated using measured data from AWAC and Waverider buoys moored at the same four locations with the WTG. It was observed that the product of significant wave height and peak wave period, HT, was not underestimated but linearly proportional between the measurements by two instruments. This linearity was applied to develop 3^rd order polynomial functions that best represented the relationship between HT and significant wave heights measured by WTG. These functions were then applied to calibrate the WTG significant wave heights that were lower than 0.7 m, the critical value established for the low waves in this study. The results showed that the linearity between the AWAC (or Waverider buoy) and calibrated wave heights were improved, and the magnitude of underestimated WTG wave heights were increased to be more realistic. The results of this study are expected to be effectively applied for other data sets obtained by WTG only, to increase the observation accuracy of WTG and to improve the estimation of harbor tranquility.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 1997.10a
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• pp.120-124
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• 1997

최근까지의 국내 신항만 설계시에는 50년 빈도 심해파나 평상파 조건을 사용한 이상시 및 평상시 항내정온도 검토는 수행되었으나 파랑에 의한 연중가동율 추산은 과학기술처(1993)의 연구에서 동해항을 대상으로만 실시되었다. 본 연구에서는 부산 신항(그림 1 참조)의 연중가동율을 수치실험과 3차원 수리모형실험에 의해 추정한 결과를 제시한다. (중략)

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 1997.10a
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• pp.19-24
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• 1997

해안 및 항만의 개발이 국가적 차원에서 대규모로 개발되고 있는 현시점에서 계획과 설계의 가장 기본적인 외력으로 작용하는 천해의 파랑을 해석하는 것은 무엇보다 중요하며, 구조물 건설 후 각종 재해로부터 안전하게 시설물을 보호할 수 있는 요건이 된다. 본 연구에서는 항만구조물 주변 및 항내정온도 해석 등에 적용성이 뛰어난 방곡선형 방정식을 이용하여 수치 모형을 개발하였다. (중략)

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.275-277
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• 2013

2013년 여름 미국 동부지역 플로팅건축 답사를 통하여, 이 지역의 플로팅건축의 현황 파악과 전문가 인터뷰를 통하여 우리나라 플로팅건축 건립 시 필요한 참고자료를 제공하고자 한다. 이 지역은 플로팅건축이 주로 여름철용으로 이용되고 있으며, 대부분 4-5채에 불과한 소규모이며, 폰툰은 스티로폴+플라스틱 드럼으로 구성되고, 계류는 목재와 철재 돌핀으로 처리되고 있으며, 상부시설은 목구조로 계획하고 있고, 정온수역에 플로팅건축을 계획할 때도 태풍에 대한 철저한 대비가 필요하다.