단무지 공장에서 발생한 질식 사고의 원인과 방사선학적 소견: 중례보고 및 가스분석 결과

박충기,김만구,김흥철,안범규,박만수,황우철,최철순,강익원 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

목 적:단무지 공장에서 질식사고를 일으켰던 가스의 종류를 알아내고, 이러한 가스중독의 방서선학적 소견을 소개하기 위하여 본 연구를 하였다. 대상 및 방법:단무지 공장에서 발생한 질식 사고자 3예중 생존자 1예를 대상으로 단순흥부X-선검사와 CT 소견을 분석하였으며, 가스의 종류를 알아내기 위하여 단무지를 유리병에 넣어 발생된 가스를 가스크로마토그래픽을 이용하여 분석하였다. 결 과:단무지 공장에서 발생한 질식사고자중 생존한 1명의 방사선학적 검사에서 신속히 호전되는 폐경결(consolidation)을 볼 수 있었으며 이는 폐부종의 소견임을 알 수 있었다. 협기성 상태에서 단무지를 담은 유리병의 상층부 가스를 실험 분석한 결과 이산화탄소, 에칠알코올이 다량으로 검출되었으나 독성가스는 주로 황화수소이였다. 결 론:단무지 공장의 질식 사고자에서 폐방사선학적 소견은 폐경결을 보이는 폐부증으로서 이는 실험을 통해 단무지에서 발생되는 유독가스인 황화수소 때문임을 입증하였다. Purpose: To identify the main toxic gas released from salted radish in rice bran(Dan-M-Ji) and to introduce the radiological findings of the patient who was exposed to the gas. Materials and Methods: Chest radiographs and CT scans of one survivor among three men who were exposed to the gas from Dan-Mu-Ji were reviewed. Gas obtained from the closed bottle containing Dan-Mu-Ji was analized by using the gas chromatography. Results: The radiographlc examinations of the survivor were suggestive of pulmonary edema with it's rapidly improving consolidations in both lung. The headapace gas within the bottle containing Dan-Mu-Ji was mainly composed with carbon dioxide, ethyl alcohol and hydrogen sulfide, of which hydrogen sulfide was considered the main toxic gas released. Conclusion: Under the anaerobic condition, Dan-Mu-Ji released toxic hydrogen sulfide. Inhalation of hydrogen sulfide might produce non-cardiogenic pulmonary edema.

시공간 트렐리스 부호화 CDMA 시스템에서의 선택적 PRC를 사용한 레이크 수신기의 성능 분석

기영민,임은정,안철용,김동구,이석규 延世大學校 電波通信共同硏究所 2002 電波通信論文誌 Vol.6 No.1

다중 경로 페이딩 채널에서의 시공간 트렐리스 부호 (STTC, Space-Time Trellis Codes)의 성능 열화를 보완하기 위한 시공간 등화기는 수신기를 복잡하게 하는 단점이 있다. 본 논문에서는 PRC (Principal Ratio Combining) 레이크 수신기를 제안하였다. 이 수신기는 다중 경로 신호를 PRC 기법을 사용하여 컴바이닝 함으로서 수신 SINR (Signal to Interference and Noise Ratio)을 개선하는 효과를 얻는다. 또한, 본 논문에서는 모든 다중 경로 컴바이닝에 비교하여, 낮은 복잡도로 비슷한 성능을 얻을 수 있는 선택적 PRC (Hybrid Selection / Principal Ratio Combining) 구조를 제시하였다. The space-time equalizer has been used to enhance the space time code in the multipath fading channel. However it requires higher receive complexity. In this paper, the principal ratio combining (PRC) receiver for space-time trellis coded CDMA system is proposed in the multipath fading channels. It maximizes the received signal to interference and noise ratio (SINR) and reduces the complexity of the system compared to optimum ML receiver. We also present the hybrid selection / principal ratio combining (HS/PRC) scheme that can achieve the performance comparable to that of the full path PRC combining system.

칼로리 제한과 유산소성 운동이 비만아동들의 혈청지질과 APO 지단백 대사에 미치는 영향

고기준,안병철 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

This study examined the effect of supervised aerobic exercise program on serum lipid components and apolipoprotein metabolism of obese children. The subjects were 8 obese 10-to 11-years-old boys, and engaged in aerobic exercise(9 weeks, 5days/week, 90min/day, 60~70% HRmax). Aerobic exercise prescription was mountain climbing(40min) at dawn and basketball and football dribble(50min) in the afternoon. Analytical items were body composition(body weight, %fat and BMI), serum lipid components(TC, TG, HDL-C, LDL-C, PL and FFA) and apolipoprotein components(apo AI, apo AⅡ, apo B, apo CⅡ and apo CⅢ). The conclusions obtained from this study were as follows; 1. In serum lipid profile after 9-week aerobic exercise was decreased significantly in TC, TG and LDL-C(P<0.01; P<0.05), and increased significantly in HDL-C(P<0.05), and decreased in PL and FFA but with no statistical signification. 2. In apolipoprotein after 9-week aerobic exercise was decreased significantly in Apo A I, Apo AⅡ and Apo B(P<0.01; P<0.05), and slightly decreased in Apo CⅡ and Apo CHI but with no statistical signification.

인천 인현동 호프집 화재 피해자 분석

최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.

계면활성제의 분리막에 대한 투과거동

이광래,안순철,김기창 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-

The molecular weights of surfactant SDS(M.W. 288) and SLS(M.W. 420) are smaller than the molecular weigh cur-off of cellulose acetate membrane used in this study. However, 20% of SDS and 67% of SLS were rejected by cellulose acetate membrane. The higher rejection rate of SLS than that of SDS is due to the longer hydrophobic chain and greater molecular weight. There was no resistance to permeation rate by membrane fouling. Most of permeation resistance was due to the concentration polarization. Permeation rate was declined with operating time and with increase in concentration of surfactant due to concentration polarization.

迎日灣의 ECOSYSTEM 硏究 2. 기후적 要因 : 氣溫, 日射量, 증발량, 바람, 강우량

朴相來,金基台,崔銀珠,李東澈,安由煥,尹伊鏞 嶺南大 海洋科學硏究所 1988 Marine Nature Vol.1 No.1

In order to understand phytoplankton ecology in the Gulf of Yeong-il, climatic factors such as air-temperature, solar-radiation, evaporation, direction and strength of winds, and precipitation are studied from January 1982 to December 1985. Annual average of air-temperature during the four-years period is about 13.6C, ranging from 1.7C (January) to 26.5C (August). The maximum value of solarradiation is measured in spring (520MJm²in May), the minimun : in winter (62 MJm²in December, January or February), and the total annual value : about 4987MJm². Annual average of evaporation is about 1200mm (Maximum: 169 in May : Minimun: 56 in February), close to precipitation (about 1050mm). Annual average of strength of "North Winds" (350°-90°)is about 550m·sec for 156 frequences during 191 days, "West Winds" (170°-340°) : 511m·sec¹for 185 frequences during 148 days, and "South Winds" (100°-160°) about 61m·sec¹for frequences during 24 days. "N" winds is about 30% more violant than "W" winds, but both winds are influential in terms of water movements in the Gulf.

迎日灣의 ECOSYSTEM 硏究 3. 水溫

尹伊鏞,朴相來,李東澈,金基台,崔銀珠,安由煥 嶺南大 海洋科學硏究所 1988 Marine Nature Vol.1 No.1

In order to observe hydrological characteristics in the Gulf of Yoeng-il, measurements of water temperature have been carried out from February to August 1983, and from August 1985 to December 1986. Surface water temperatures are closely linked to air temperature and solar-radiation for all littoral stations. Seasonal and annual variations of all horizontal stations are very similar to one another. Vertical variations of water temperatures for the stations located along the central-line of the Gulf are characteristic (and observed) as thermoclines and thermal stratification in the hottest summer-time (August). It is interesting to note that water column temperature of July and September are rather warmer than August, on account of a cold water mass coming from NE direction. For example, surface temperature in June 1982 was above 19℃, but the water below a depth of about 30m drastically drops to 4℃. It is indicative of invasion of water mass from cold current or deep sea.

응급의료정보 체계를 위한 전지 의료 카드의 활용방안

박흥식,남승곤,안재억,김현의,김주한,정철규,김태진,이기한 대한의료정보학회 1998 Healthcare Informatics Research Vol.4 No.2

전자 의료 카드를 위한 보건의료 정보 표준화 연구

박흥식,남승곤,안재억,김현의,김주한,정철규,김태진,이기한 대한의료정보학회 1998 Healthcare Informatics Research Vol.4 No.2

수술실 오염도감소를 위한 수술실공조시스템에 대한 연구

김천숙,박은정,강규식,김지은,안기량,권진형,유시현,주영철,권순정 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.1

Background: The OR(operating room) should provide an optimum environment that is safe for the patient and the working personnel. The air ventilation system of OR has been studied to decrease the contamination of air. We investigated the flow and contamination of the air in OR at our hospital. Method: Cultures in OR were made and the number of bacteria and fungi were calculated. A two-dimensional model for the cross-section of an operation room is developed for the CFD (computational fluid dynamics) analysis. The characteristics of air flow in the empty operation room and in the occupied operation room are calculated by using a CFD program. Results: The current air ventilation system of our hospital does not deliver the clean air to the operating site efficiently in occupied OR. Conclusions: We suggested a new location of air ventilation system which improves air venting with little increase of the cost of equipment.