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구강악안면 영역의 수술 시 악하 기관 삽관술의 유용성에 대한 임상적 고찰
김일규,장금수,최진호,오남식,류승현,김재우,정종권 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2
It is hardto make a decision of what route we will select for endotracheal intubation at open reduction of oral and maxillofacial trauma. In the patients with fractures of multiple facial bones combined with fracture of crainal basal bone, intermaxillary fixtion makes oro-endotracheal intubation impossible. And the possibility of injury to the fracture site of crainal basal bone and the impossibility of reconstruction of naso-orbito-ethmoidal(NOE) complex fractures also make the naso-endotracheal intubation difficult. But it is not easy to select the tracheostomy because of its several complications and abhorrences. For above reson, Altermir introduced submental route for endotracheal intubation as new technique in 1986 and Green etc. modified this technique in 1996. The purpose of this article is to evaluate the efficiency of submental route for endotracheal intubation after experience of 10-clinical cases for variable reasons with review of articles.
악골에 발생한 중심성 골종(Central Osteoma)의 치험례
김일규,김효정,최진호,장금수,오남식 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1
Two cases are described of Endosteal Osteoma which developed in the Jaw bone and were painful. The tumors were radiographically characterized by dense radiopaque lesion. The surface was smooth and overlying mucosa was normal in color. Tentative diagnosis was OSteoma. The tumors were treated surgically. Postoperatively the patients made uneventful recovery and the wound healed satisfactory. Postoperative radiograph showed that radiopaque mass had been completely removed. Histologically, biopsy was reported as Central Osteoma. Subsequent follow-up examinations show no recurrence of the lesion or the pain.
발전소 수중방류구조 내 수평유공판 설치에 따른 거품발생 저감효과에 관한 실험적 연구
오상호(Oh, Sang-Ho),오영민(Oh, Young-Min),강금석(Kang, Keum-Seok),김지영(Kim, Ji-Young) 한국해안해양공학회 2008 한국해안해양공학회 논문집 Vol.20 No.5
이 연구에서는 보령화력발전소 방수로 수중방류구조에 대한 수리모형실험을 수행하여 수중방류구조 내 흐름 특성을 고찰하고, 수평 유공판 설치에 따른 거품저감 효과를 검토하였다. 수중방류구조 내 단면평균유속은 설계시 거품의 외해 유출 방지를 위해 고려한 목표값 1 m/s 이내에 분포하였다. 또한, 수중방류구조 내 2차 낙하 위치에 수평 유공판을 설치함에 따라 거품의 수중 최대관입깊이가 30~50% 감소함을 확인하였다. 특히, 2차 낙하 위치에 구멍의 크기가 20 cm 정도인 사각구멍형 유공판을 설치하고, 중앙부는 무공 구조로 제작하여 낙하 에너지를 소산시키게 될 경우, 가장 효과적으로 수중에 관입되는 거품 발생량을 저감시킬 수 있을 것으로 기대된다. In this study hydraulic experiment was carried out to investigate the flow characteristics in the submerged outlet structure of Boryeong power plant and the efficiency of bubble reduction by installing horizontal porous plate in the outlet structure. The cross-sectional mean velocity in the submerged outlet structure was smaller than 1 m/s, the target value at the design stage to prevent bubble outflow to the open sea area. In addition, it was found that the maximum depth of bubble penetration is reduced 30 to 50% by installing the horizontal porous plate at the second falling location in the submerged outlet structure. It is expected that the total bubble amount entrained in the water will be most efficiently reduced by installing square-hole-shape porous plate of 20 cm hole size and making its central section as non-porous structure to dissipate the energy of falling water.
재난복구 시 재난관리 주체의 의사결정에 대한 비대칭정보 문제의 적용
오금호(Keum Ho Oh) 위기관리 이론과 실천 2007 Crisisonomy Vol.3 No.1
When disaster occur, people are subjected to make continuous decisions and to perform prompt activities along with the emergency situation in order to save lives and properties. In the course of decision making for efficient disaster management, numerous stakeholders such as central and local government, the defected, citizen, NGOs, enterprises, and so on are likely to attempt to reflect their own concerns and informations. However, these individualistic efforts may result in the inefficiencies in disaster management largely due to the differences in informations. Based upon the theory of markets with asymmetric information, this study attempts to explain the problems of asymmetric information under the light of disaster management. From the perspectives of market failure and government failure caused by information imperfection, the study elaborates attempts to re-interpret, under the light of asymmetric information, the causes raised by major problems in disaster management, viz. i) lack of preventive investment by the primary management groups, ii) lack of public safety services in the damaged or vulnerable areas, iii) increase of malpractices associated with disaster recovery projects. As the rational approaches to the problem of symmetric information in disaster management, the study suggests the following recommendations: 1) it would be necessary to develop the tasks for information scanning as well as dissemination and to activate the investment to these sectors, and 2) it is required to launch regional offices which mediate, monitor and assess the recovery projects. 재난이 발생하면 재난관리 주체별로 긴급한 상황에서 생명과 재산을 지키기 위해서 일련의 의사결정과 대응활동을 수행하게된다. 정부, 피해자, 일반시민, 민간단체, 기업 및 언론기관등 다양한 재난관리주체들은 각각의 소유한 정보와 개별적 입장등을 반영하여 의사결정을 하게 된다.그러나 서로다른 정보를 소유하고 있기때문에 재난관리활동은 비효율적으로추진될 수 있다. 본 연구에서는 정보경제학에서 제시하고 있는 비대칭 정보 문제를 재난관리 상황에 적용하였다. 시장구조와 정부의 재난관리역할에 대한 한계점을 재난관리에 있어서 정보의 역할을 중심으로 살펴보았다.재난관리주체의 예방투자 노력미흡 피해지역 공공안전 서비스 공급의 부족, 피해복구관련 비위사례 증가 등 재난관리에서 나타나는 문제점의 원인을 비대칭 정보관점에서 재해석하였다.이를 바탕으로 정보탐지 및 전파를 위한 재난관리업무의 개발과 적극적인 투자와 재난관리를 위한 사전예방차원의 감시제도, 재난복구사업 총괄조정 조직마련을 재난관리 정책의 개선점으로 제안하였다.
외상에 의한 병원전 및 응급실 사망 환자의 10년 전후의 비교
오성범 ( Sung Bum Oh ),이강현 ( Kang Hyun Lee ),차경철 ( Kyung Chul Cha ),지호진 ( Ho Jin Ji ),김호중 ( Ho Jung Kim ),김현 ( Hyun Kim ),황성오 ( Sung Oh Hwang ),배금석 ( Keum Suk Bae ),김헌주 ( Hun Joo Kim ) 대한외상학회 2004 大韓外傷學會誌 Vol.17 No.2
Background: Trauma-induced deaths can be prevented by implementation of trauma system during prehospital phases and in-hospital phases. To reduce the preventable death rate (PDR), it is essential to improve the treatment strategy during the prehospital phases and the in-hospital phases. This study was designed to compares the prehospital death and emergency department (ED) death in a city before and after implementation of trauma system. Method: We evaluated the prehospital and ED data of 106 trauma patients who had died in 1991 and 2001. Trauma deaths were reviewed and the preventability of those deaths was judged by three professional panels according to appropriateness of diagnosis and treatment in prehospital phases and in-hospital phases. Deaths were classified as preventable and nonpreventable. We compared the preventable death of 1991 with those of 2001. Result: Trauma patients were 993 in 1991 and 3,094 in 2001. Trauma-induced deaths were 60 in 1991 and 46 in 2001. The death rate decreased from 6% in 1991 to 1.5% in 2001 (p<0.001). Death rate by traffic accident decreased from 90% (54/60) in 1991 to 67% (31/46) in 2001 (p<0.001). The PDR decreased from 40% (24/60) in 1991 to 13% (6/46) in 2001 (p<0.001). The time elapsed from the scene of accident to ED arrival decreased from 111 minutes in 1991 to 53 minutes in 2001 (p<0.001). There was no significant difference in Injury Severity Score between 1991 and 2001 (p=0.283). Conclusion: The rate of preventable death decreased from 1991 to 2001. Implementation and improvement of the trauma system has positive effects on trauma-induced death rate, PDR and the time elapsed from the scene of accident to ED arrival.
Oh, In-Seok,Kim, Tae-Wan,Ahn, Jin-Ho,Keum, Jung-Won,Choi, Cha-Yong,Kim, Dong-Myung Korean Society for Biotechnology and Bioengineerin 2007 Biotechnology and Bioprocess Engineering Vol.12 No.5
We have developed a technique to improve the formation of correct disulfide bonds within cell-free synthesized proteins. Via the use of a metabolic inhibitor of glutamate-cysteine ligase, the accumulation of glutathione was effectively prevented in cell-free extracts, thereby enabling the stable maintenance of redox potential for extended reaction periods. As a result, in a reaction in which a model protein contatining 9 disulfide bonds was synthesized under cell-free conditions, the final amount of active protein products was increased by 50%. The method presented in this study will provide a rapid and robust route to the high-throughput expression and screening of proteins which require multiple disulfide bonds for their activity.