國內 大氣質管理의 現況과 問題點

한명호,김차영,최정한,백성옥 嶺南大學校 環境問題硏究所 1991 環境硏究 Vol.11 No.1

본 논문에서는 국내에서 현재 법적인 규제가 행하여지고 있는 대가오염물질의 오염도 현황과 대기질 관리의 문제점을 여러가지 측면에서 서구의 선경험국가들의 경우와 비교 분석하였으며 이러한 문제점에 대한 대책을 강구하고자 하였다. 이와 아울러 현재 법적 규제의 범위에는 포함되어 있지는 않으나 잠재적 유해성이 큰 오염물질의 환경학적인 중요성과 현재의 관리실정 및 향후의 대책에 대하여 검토하였다. The current situation and inherent problems of air quality management in Korea were critically evaluated and compared with other developed countries, with respects to the ambient standards, air quality monitoring, emission inventory, and energy consumption patterns. Environmental implications and a worldwide trend in the management of non-criteria pollutants, was also discussed with a particular emphasis on the legislative aspects. .

제 3형 급성 견봉-쇄골 관절 분리 환자의 수술적 치료 결과

한성호,양보규,이승림,정선욱,이동호,김민석 대한골절학회 2003 대한골절학회지 Vol.16 No.2

목적 : 본 연구를 통하여 Rockwood 제 3형 급성 견봉-쇄골 관절 분리 환자에서 Phemister 술식과 modified Phemister 술식의 치료 결과를 비교하고자 한다. 대상 및 방법 : 1992년 2월부터 2001년 8월까지 제 3형 급성 견봉-쇄골 관절 분리로 수술적 치료를 받고 1년 이상 추시 가능하였던 45명, 45예의 환자를 대상으로 하였다. 평균 연령은 28.1세였으며, 남자가 42명, 여자가 3명이었다. 진단은 이학적 검사와 단순 방사선 부하 촬영법을 이용하였으며, 수상일로부터 수술적 치료까지의 평균 기간은 7.8일이었다. 술장 소견상 오구-쇄골인대 봉합술이 어려운 15예에서는 Phemister 술식을 시행하였고 (Ⅰ군), 인대 봉합이 가능한 30예에서는 modified Phemister 술식을 시행하였다(Ⅱ군). 수술 후 추시 기간은 평균 16.2개월이었고, 결과 판정은 최종 추시 때의 임상 소견과 이학적 검사 및 방사선 촬영을 통해 UCLA shoulder scoring system과 acromio-clavicular separation scoring system을 이용하였다. 결과 : 술후 합병증은 Ⅱ군에만 표재성 감염이 2예, K-강선 이주가 1예에서 발생하였다. 최종 추시상 전예에서 동통, 관절 운동 범위의 제한은 없었고 , Ⅱ군에서만 방사선 촬영상 2예에서 아탈구가 관찰되었다. UCLA shoulder scoring system은 Ⅱ군에서 우수 93.3%, 양호 6.7%였고, acromio-clavicular shoulder scoring system은 Ⅱ군에서 우수 90%, 양호 10%였다. 결론 : 활동적인 연령에서 발생한 제 3형 급성 견봉-쇄골 관절 손상의 환자에서 Phemister 술식만으로도 좋은 결과를 보일 수 있을 것으로 사료된다. Purpose : The purpose of this study is to compare the Phemister technique with the modified Phemister technique for the patients with Rockwood type 3, acromio-clavicular separation. Materials and Methods : The 45 cases of 45 patients received surgical treatment for Rockwood type 3, acute acromio-clavicular separation in our hospital from Feb. 1992 to Aug. 2001 later with the follow-up study were selected as subjects. The average ages were 28.1 years old, male and female were 42, 3 persons, respectively. Physical examination and plain radiography were used for their diagnosis and the intervals between injury and surgical treatment were 7.8 days. In intraoperative finding, we performed Phemister technique in 15 cases according not to be able to repair coraco-clavicular ligament (groupⅠ), modified Phemister technique in 30 cases according to be able to repair that (groupⅡ). The average follow up period was 16.2 months, and the UCLA shoulder scoring system and the acromio-clavicular separation scoring system were used to obtain clinical results. Results : Only in Group Ⅱ, the complication after surgery were associated with superficial infection in two cases and K-wire migration in one case. At last follow up, there were no pain and limitation of range of motion in all cases, and two cases in Group Ⅱ were found to be subluxation in radiography. Clinical results revealed excellent was 93.3%, good was 6.7% in UCLA shoulder scoring system in both groups, and excellent was 90%, good was 10% for group Ⅱ in acromio-clavicular separation scoring system. Conclusion : The results are considered to be food with only Phemister technique in type 3, acute injury occurred in working ages.

유한요소법에 의한 영구자석 전동기의 토오크 특성 해석

오연호,한성진,주수원 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.2

This paper deals with finite element analysis of small motors using permanent field magnets. To improve the computational accuracy, adaptive finite element algorithm is applied and that estimates the normal directional magnetic field densities at the interfaces of neighboring meshes. Results show the flux distribution to be smoothen and the calculated torque to be improved.

파라콰트 중독 흰쥐에서 항산화제 U-74389G 의 치료 효과

오진호,정성필,임훈,노성훈,김혜영,김승호,이한식,민진식 대한응급의학회 2000 대한응급의학회지 Vol.11 No.4

Background: This study was conducted to verify the hypothesis that the suppression of lipid peroxidation with the antioxidant, U-74389G, could improve the survivability of paraquat intoxicated rats. Methods: First, we obtained the 24-h mortality by using several paraquat dosages and calculated the 24-h LD5O in 24 male Wistar rats(250~350 g). To examine the effect of U-74389G, we divided the rats in 4 groups: a control group and U-74389G only group, a paraquat only group, and a paraquat plus U-74389G group(n=10 each). Paraquat, 35 mg/kg, was injected intraperitoneally at 0 h. U-74389G, 10mg/kg, was administered intraperitoneally at 0, 12 h or at 1, 12 h in the respective groups. The rats were observed for 24 hours. At 24 h, plasma and lung, liver, and kidney tissues were obtained after sacrificing the surviving rats to determine the degree of lipid peroxidation by using a thiobarbituric acid reactive substances (TBARS ) quantitative analysis. Results: The 24-h LD50 of paraquat was calculated as 40 mg/kg in our rats. The 24-h mortality was as follows: control group and U-74389G group 0%, paraquat group 30%, and paraquat plus U-74389G group 10%. The TBARS analysis showed no differences between the U-74389G and the control groups. The paraquat group showed significantly increased TBARS levels in the serum and in the kidney and lung tissue compared to the control group(p<0.05). With U-74389G, the increased TBARS levels were significantly decreased in the plasma, kidney, and lung tissues compared to the paraquat group(p<0.05). However, in the liver tissue, there were no significant differences among the groups. Conclusion: A 21-aminosteroid antioxidant, U-74389G, improved the survivablity of paraquat-intoxicated rats through the suppression of lipid peroxidation. Our result suggests the possibility of clinical application of this drug as an antidote for paraquat poisoning.

유한요소법에 의한 영구자석 전동기의 정특성 해석

오연호,한성진,주수원 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.2

There are increasing needs for high performance small motors using permanent magnets. In this paper, the static characteristics of pm dc motor has been analyzed by finite element method. In the air gap, magnet flux densities due to only field magnet have been calculated, and the effect of armature reaction has been investigated. For torque calculation two dimensional F.E.A. with the integration of Maxwell stress tensor has been applied and show good agreement with experimental result.

報漏閣 自擊漏 硏究(II) : 計時시스템

김성균,이재효,한영호,남문현 건국대학교 산업기술연구원 2006 건국기술연구논문지 Vol.31 No.-

This is the second part of the paper series about Jagyeungnoo, 'The Self Time Announcing Clepsydra', restoration project. The content of the second part is about the constant flow rate keeping system to the time measuring vessels. This system consists of three vessels. They are reservoir, compensating, and regulating vessels. In Jagyeungnoo system overflow mechanism was adopted to achieve constant flow rate regardless inflow rate variations. Through extensive parametric and experimental study based on extensive trial-error based on the mathematical model, optimal values of two parameters, i.e, initial height of regulating vessel and the diameter of the pipe exit orifice were determined and discussed improving method of accuracy. For the application of this result to Jagyeungnoo system, the eleven 24 solar seasonal time-ruler and its floating accessories were restored based upon Nujutongui, i.e. Clepsydra Operation Manual published in King Sejong's era.

노화와 간경변이 인체의 적혈구, 혈장 및 위 점막의 Glutathione 농도와 Glutathione Peroxidase 활성도에 대해 미치는 영향

백광호,김종혁,백일현,한태호,박현주,박상훈,서중산,박충기,유재영 대한노인병학회 2001 대한노인병학회지 Vol.5 No.3

거골의 박리성 골연골염

하권익,한성호,양보규,김치홍,김태성 대한스포츠의학회 1995 대한스포츠의학회지 Vol.13 No.1

거골의 박리성 골연골염은 연골과 연골하골이 균열되고 관절 면으로부터 부분적 혹은 전체적으로 분리되는 병변으로 흔치 않은 병변이다. 거골의 박리성 골연골염은 잘 알려져 있음에도 불구하고, 수술적 치료의 결과에 대한 지식은 적은 편이다. 저자들은 1998년 1월부터 1992년 12월까지 만 5년간 16명, 16례의 거골 박리성 골연 골염 환자를 평균 29개월 추시관찰 및 분석하여 다음과 같은 결과를 얻었다. 1) 연령 분포는 최소 15세에서 최장 58세 였으며 평균 30세 였다. 2) 16명의 환자중 남자가 14례 여자가 2례였고 우측 거골이 10례, 좌측 거골이 6례 였다. 3) 외상과 관계있는 환자는 16례중 15례였으며 거골의 내측에 병변이 있는 경우가 10례, 외측이 6례 였으며 양측인 경우는 없었다. 4) 증상 발현후 수술까지의 기간은 최단 3개월에서 최장 7년이 였으며 평균 25.9개월 이었다. 16명 전례에서 동통을 호소하였으며 6명에서 강직 및 불안정성을 각각 호소하였다. 5) Berndt와 Harty에 의한 병변 분류는 stage Ⅰ은 없었으며 stage Ⅱ는 4례, stage Ⅲ가 7례, stage Ⅳ는 5례로 stage Ⅲ이 가장 많았다. 6) 치료는 관절 개방술에 의한 절제술(1례), 절제술과 소파술 및 다발성 천공술(8례), 절제술 및 소파술 (3례), 소파술 및 bone peg(1례), 관절경적 소파술 및 다발성 천공술 (3례) 시행하였으며 치료결과는 O'Farrell 등이 사용한 평가 방법에 의하면 우수 13례 (81%), 양호 2례(12.5%), 불량 1례 (6.5%)였다. Osteochondritis dissecans of the talus is defined as a subchondral bony lesion of small fragment of bone, usually under two centimetres in diameter, with overlying intact articular cartilage. This fragment then becomes separated from its bed and undergoes necrosis. Although the lesion of osteochondritis dissecans of the talus is well known, there is little information in the literature concerning the results of surgical treatment. Sixteen cases of osteochondritis dissecans of the talus, operated on between January 1988 and December 1992, were studied. All were available for follow-up an average 29 months later and clinical analysis were as follows; 1. Age incidence was distributed from 15 years to 58 years (average 28) 2. 16 patients (14 male, 2 female) were examined and followed-up ; in ten the right ankle was involved and six the left ankle. 3. Of the 16 patients, 14 patients were associated with a history of trauma and 10 patients had medial lesions and 6 patients, lateral lesions. 4. The duration of symptom on these cases ranged from 3 months to 7 years, with an average of 25.9 months. All patients complain of pain when using the ankle and 6 patients complain of stiffness of the ankle and sensation of Berndt and Harty, four ankles had a stage Ⅱ lesion, nine had a stage Ⅲ lesion and five had a stage Ⅳ lesion. 6. The methods of treatment were excision (1 case), excision, curettage and drilling (8 cases), excision and curettage (3 cases), curettage with bone pegging (1 case) and arthroscopic curettage and drilling (3 cases). According to O'Farrell grading system which combined subjective with the objective assessment, 13 patients (81%) had good results, 2 patients (12.5%) had fair results, and 1 patient (6.5%) had a poor result.

뮤코다당증(Mucopolysaccharidosis)환아의 치은 증식

송주현,장철호,김영재,한세현,이상훈 대한소아치과학회 2007 大韓小兒齒科學會誌 Vol.34 No.1

뮤코다당증(Mucopolysaccharidosis, MPS)은 gIycosaminoglycans (GAGs)의 분해에 필요한 라이소좀 효소(lysomal enzymes)의 결함으로 GAGs의 대사 산물이 세포의 라이소좀내에 축적되어 점차 세포와 조직, 기관의 기능 이상을 초래하고 신체 질환과 정신 발달 지연을 가져오는 질환이다. 본 증례는 심각한 치은 증식을 가진 뮤코다낭증 환아를 전신 마취 하에 치은 절제술을 시행한 치험례이다. 소아치과 의사는 뮤코다당증 환아의 구강내 증상과 치과 치료시 주의 사항에 대해 숙지해야 하고, 내과의와 연계하여 환아의 전신 상태 변화에 민감하게 대처하여 치과 치료를 시행해야 한다. Mucopolysaccharidosis (MPS) is a disorder of storage in which there is excessive accumulation of glycosaminoglycans(GAGs) from lysosomal enzyme defect. Lysosomal accumulation of GAGs eventually results in cell, tissue and organ dysfunction. This patient may manifest mental retardation and physical disorders. This clinical report presents a girl with MPS having severe gingival hyperplasia. Gingivectomy was performed under general anesthesia. The pediatric dentist must be aware of oral manifestations present in the MPS. The approach to dental management will require teamwork between the dentist and the patient' s physician.

부신적출 토끼신의 Li^(+)처리에 미치는 코티존의 영향

하혜경,장환일,성호경,한홍우 경희대학교 1989 慶熙醫學 Vol.5 No.3