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.

대퇴골두 무혈성 괴사의 자기공명 영상과 조직검사와의 비교 연구

원중희,장봉순 충북대학교 의과대학 충북대학교 의학연구소 1994 忠北醫大學術誌 Vol.4 No.2

대퇴골두 무혈성괴사의 자기공명영상 소견을 조직병리학 소견과 비교연구하였다. 11명의 환자 12회의 고관절에 관해 연구하였다. 3례의 고관절은 Stage 2, 6례는 Stage 3, 3례는 Stage 4였다(Ficat and Alert). 표본은 영상에 따라 절개하여 조직학적으로 연구하고 T1, T2 자기공명영상과 연관지었다. 초기에 괴사 소견은 T1에서 음영이 증가되었다. 괴사골과 괴사지방이 괴사부분에서의 낮은 음영을 나타내었다. 괴사부위 주위의 낮은 음영의 띠는 섬유조직과 골반응을 나타내는 것이다. 괴사부 밖의 음영도 정상지방골수에 비하면 감소되었다. 자기공명영상 소견은 각각의 진행시기나 대퇴골두에 따라 차이가 있었으나 조직학적 소견과 상호연관지을 수 있었다. Magnetic resonance image of INFH were correlated with histopathologic sections. Eleven patients with twelve hips were included in this study. Preoperative radiographs and MRI were taken for the patients. Three hips were in stage Ⅱ, six hips were in stage Ⅲ, and remaining three were in stage Ⅳ respectively(Ficat and Alert). These hips were replaced with artificial joint and resected heads were examined. The specimens were bisected along the imaging plane, and studied histologically and matched with respective MR images of T1 and T2. Necrotic portion in earlier stage showed higher signal intensity in T1-weighted image. Subchondral void, necrotic bone, and saponified fat were responsible for low signal intensity in necrotic portion. Low signal band adjacent to the necrotic foci represented inner fibrous tissue and outer reactive sclerotic bone. Outside the necrotic foci, the signal intensity diminished compared with normal fatty marrow. These findings were attributed by cellular infiltration and trabecular bony proliferation. MRI patterns were variable in various stages and each femoral head, but corresponded well with histologic findings.

Arbitrage, Equilibrium and Smooth Trades

Won, Dong-Chun,Kim, Choong-Hwan 경제경영연구소 2004 經濟經營硏究 Vol.2 No.-

무증상 대퇴골두 무혈성 괴사의 증상발현

원중희,김용민,최의성,이호승,서중배,배병권 대한고관절학회 2001 Hip and Pelvis Vol.13 No.1

고관절 전치환술시 응용프로그램을 이용한 수술 전 계획

원중희,김용민,최의성,손현철,박경진,남기세,정재중 대한고관절학회 2003 Hip and Pelvis Vol.15 No.3

ION-SELECTIVE ELECTRODES OF FERRITE MEMBRANES

원충택,박면용,오평제,이원,박기채 상명대학교 논문집 1993 상명대학교논문집 Vol.31 No.-

산화제2철 또는 산화제2철과 마그네슘, 구리, 니켈, 혹은 아연을 몰비가 0.6:2.4, 0.8:2.2, 1:2, 1.2:1.8 및 1.4:1.6 (M:Fe, M=Mg, Cu, Ni, Zn) 인 혼합물로 Ferrite막 전극을 만들어 이온 선택성 전극으로 사용될 가능성을 연구하였다. 이들 전극막 재료는 각각 900, 1,000, 1,100, 1,200, 1,300, 및 2,614-2,700℃에서 소결되었다. 소결 온도가 높을수록 이온 감도와 선택성이 컸다. 산화제2철만을 사용하였을 때 보다 산화제2철을 Mg,Cu,Ni 또는 Zn과 혼합하여 2,164-2,700℃ 에서 소결된 전극들이 이온 선택성이 우수하였다. 이들 전극의 전기저항치는 10^2 메그옴정도이다. 모든 전극의 정전앞감응을 pH3 및 10사이에서 관찰하였는데, 은(I), 인산염(III), 인산일수소염(II), 인산이수소염(I) 및 비소(V, III)에 민감하게 감응되었다. 이들전극은 물속에 계속해서 담궈두면 내구도가 6개월 정도였다.

교정용 미니스크류 식립 시 스크류의 길이, 직경 및 피질골 두께에 따른 응력 분포에 관한 3차원 유한요소법적 연구

임종원,김왕식,김일규,손충렬,변효인 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.1

본 연구는 교정치료 시 고정원 보강을 위해 사용되는 교정용 미니스크류의 길이, 직경 및 피질골 두께에 따른 응력분포 양상을 알아보기 위하여 시행되었다. 미니스크류의 길이와 직경 변화에 따른 응력 분포 양상을 관찰하기 위하여 식립되는 피질골의 두께를 1.0mm로 고정하고 미니스크류의 길이를 6.0mm, 8.0mm, 10.0mm, 12.0mm로, 직경을 1.2mm, 1.6mm, 2.0mm인 3차원 유한요소 모델을 제작하였다. 또한, 피질골의 두께 변화에 따른 응력 분포 양상을 관찰하기 위하여 미니스크류의 길이를 0.8mm로 고정하고 직경은 1.2mm, 1.6mm, 2.0mm로, 피질골의 두께는 1.0mm, 1.5mm, 2.0mm, 2.5mm인 3차원 유한 요소 모델을 제작하였다. 각각의 유한요소 모델의 미니스크류 head 중심에 200gm의 수평력을 가하여 응력 분포 양상과 크기를 3차원 유한요소 해석 프로그램인 ANSYS응 이용하여 비교한 결과 다음과 같은 결론을 얻었다. 1. 미니스크류 내부에서 나타나는 최대 응력값을 비교한 결과, 미니스크류의 직경이 1.2mm에서 2.0mm로 증가할수록 응력이 감소하였으며 같은 직경에서는 길이 증가에 상관없이 일정한 값을 유지하였다. 2. 피질골 및 해면골에 작용되는 최대 응력값을 비교한 결과, 미니스크류의 직경이 1.2mm에서 2.0mm로 증가할수록 응력이 감소하였으며 같은 직경에서는 길이 증가에 상관없이 일정한 값을 유지하였다. 3. 피질골 및 해면골에 작용되는 응력 분포를 관찰한 결과, 대부분의 응력이 피질골에서 흡수 되었으며, 해면골에 전달되는 응력값은 미미하였다. 4. 피질골 두께에 따른 최대 응력값을 비교한 결과, 같은 미니스크류의 직경에서는 피질골의 두께 증가에 상관없이 일정한 값을 유지하였다. 이상의 결과는 교정용 미니스크류의 유지에 길이보다는 직경이 더 크게 관여하는 것으로 나타나 미니스크류의 식립시 이에 대한 고려가 필요함을 시사하였다. The purpose of the present study is to evaluate the stress distribution on the length and diameter of the miniscrew and cortical bone width. Three dimensional finite element models were made of diameter 1.2mm, 1.6mm, 2.0mm and length 6.0mm, 8.0mm, 10.0mm, 12.0mm and cortical bone width 1.0mm. Also, another three dimensional finite element models were made of diameter 1.2mm, 1.6mm, 2.0mm and length 8.0mm and cortical bone width 1.0mm, 1.5mm, 2.0mm, 2.5mm, Two-hundred grams horizontal force were applied on the center of the miniscrew head and at that stress distribution and its magnitude had been analyzed by ANSYS, which is three dimensional finite element analysis program. The obtained results were as follows : 1. The comparison of the maximum von-Mises stress in the miniscrew showed that as the diameter increases from 1.2mm to 2.0mm stress has been decreased, while on the same diameter stress was not changed regardless of the length change. 2. The comparison of the maximum von-Mises stress in the cortical and cancellous bone showed that as the diameter increases from 1.2mm to 2.0mm stress has been decreased, while on the same diameter stress was not changed regardless of the length change. 3. In the analysis of the stress distribution in the cortical and cancellous bone, the most of the stress had been absorbed in the cortical bone, and did not transmitted much to the cancellous bone. 4. In the analysis of the maximum von-Mises stress according to the cortical bone width, the same diameter of the miniscrew showed a constant stress value regardless of the cortical bone width change. The above results suggest that the maintenance of the miniscrew is more reliable on diameter than length of the miniscrew.

殺人 15例를 포함한 精神鑑定 50例에 대한 精神醫學的 考察

吳世元,李忠敬 大韓神經精神醫學會 1983 신경정신의학 Vol.22 No.4

Between Jan. 1975 and Dec.1978, the Chon Nam Provincial Mental Hospital have received 50 cases for psychiatric evaluetion from the public offices. According to our study of personal background and psychiatric examination record, about 40 cases of mental disorder were found among them. Therefore the results below are from studies done on three areas: diagnostic distribution, criminal phase, and murder characteristics. 1. The sex (N=50) was mostly male (92%). 78% of the cases were 20 to 39-year-old age group. Married patients were 40 percent and unmarried, divorced and separated patients were 60 percent. Half of them received education for one to six years only. 70 percents of them reside in the farming and fishing village by a habitation group. Furthermore about half of the cases were out of work. 2. Of the referrals, 64 percent came from the police station, and 22 percent came from the public procurator's office. 3. 72.5 percent of the diagnostic distribution (N=40) were schizophrenia. 4. In this study, 37.5 percent of the charges were murder, and followed by assault, destruction, the anti-communism law, and the disturbing pubic-peace law, etc. 5. On the targets of crime the family was 45 percent and the public office was 25 percent. 6. Act of crime were almost all due to psychotic conditions: for example delusion, hallucination, confusion and violence etc. 7. Of 15 cases of homicide, 73.3 percent had schizophrenia. 80 percent of the case were committed in summer or spring. 46.6 percent of the homicide occurred during the daytime. 8. 80 percent of the weapons used in committing the homicide were tools and blunt weapons. The places where the homicide were committed was usually one's house or next door. 9 The victims for murder were mostly consisted of the biological family: parents, life-partners, children, and sister-in-law, ect. After committing the murder, the patients didn't hide their crime, but commonly they recognized, deviated or denied their crime in part.

間歇噴射의 液體微粒化 現象에 關한 基礎的 硏究

李忠遠 경북대학교 공과대학 1983 工大硏究誌 Vol.12 No.-

The aim of this study is to obtain the disintegration phenomena of Swirl nozzle when the liquid was injected intermittently. Using photographic technique, experiments were carried out to find out effects of injection period, injection pressure, and flow rate. From the results of the experiments the following conclusions have been obtained. 1. Photographic technique using delay circuit has been proved to be useful for the study of disintegration phenomena on intermittent injection. 2. As the injection pressure increases, the diameter of the liquid droplet decreases.

求償貿易去來의 契約慣行에 관한 考察 : 東歐諸國과 對應購買去來를 中心으로 Focusing on Counterpurchase Transaction with East European Countries

尹忠沅 全北大學校 1989 論文集 Vol.31 No.-

From the middle of 1970s, the importance of countertrade practices in East-West trade has grown as the foreign trade organizations in Eastern countries insisted more often on linking purchase contracts in the West with the simultanous or deferred export of their own products. In this situation, the ability and willingness to countertrade is crucial to the success of many Western companies' export plan. However, countertrade commitments often means that they have to get involved in complicated and risky business, unlike other general types of foreign trade. Therefore, this study examines mechanism of countertrade, in Chap. Ⅱ, categoriaing the defferent types which might be useful not only for purely academic reasons but also because of the very practical value, and shows the main difference of contracting practices by type. And in Chap. Ⅲ, problems concerning the use of the concepts describing the various types of countertrade are shown because there is a considerable degree of confusion between international trade organizations, countries and countertrade experts. Chap. Ⅳ shows the major issues that arise in the course of making a contract and the best case outcome from the point of view of the Western party to countertrade negotiations. Main issues cover separation of contracts, countertrade ratio, selection and quality of countertrade goods, time period for fulfilment of countertrade obligations, pricing, distribution, and non-performance penalties etc. Chap. V discusses some legal context in which countertrade take place, considering instrument of public international law that comes closest to regulating countertrade-GATT and IMF.