Fault Detection System for Front–wheel Steering Passenger Cars

Hwan?Seong KIM,Sam?Sang YOU,Jin?Ho KIM,Ju?Sik HA 제어로봇시스템학회 2001 제어로봇시스템학회 국제학술대회 논문집 Vol.2001 No.10

하악골 절제술후 재이식된 돌결자가골 재이식 : 치험 3례

김 식,김수관,김운규,김수민,류종희,이준길,조경안,김수흥,정태영,여환호 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2

We described three cases of immediate reimplantation of a frozen-thawed autogenous mandible composed of a mixture of iliac bone, marrow, and particulate hydroxyapatite in tumors of the mandible. Acceptable outcomes were obtained in three patients who underwent immediate autogenous mandibular graft reconstruction. The conditions leading to successful outcome of the procedure are also discussed. Reimplantation of frozen autogenous lesioned mandible was performed in three patients with mandibular tumors. Two reimplanted grafts survived without complications following surgery. One case had postoperative infection that resolved with appropriate antibiotic treatment. There were no recurrences of the primary lesions. Satisfactory facial contour after surgery was achieved. These results are most promising, and we believe that, with further refinement, this technique will offer a new and acceptable modality for facial reconstruction in patients with cancer.

구급일지를 통한 병원 전 환잔 분류 및 처치의 적절성 평가 연구

민순식,김재광,이근,박철완,양혁준,류일,현성열,이훈규,정환모,김윤 대한응급의학회 2000 대한응급의학회지 Vol.11 No.4

Background: Recently, patients' demands for emergency medicine are increasing, and most of prehospital medical care, including basic life support, cardiopulmonary resuscitation and triage, are provided by paramedics or emergency medical technicians. Evaluation of the adequacy of prehospital management and triage has become important for improving the quality and the effectiveness of the emergency medical system. Methods: The 202 patients who were transferred by ambulance with paramedics, nurses, or emergency medical technicians to the Emergency Department in Gil Medical Center from July 1, 1999, to September 31, 1999, were enrolled. This study was conducted prospectively by using the emergency physician,s log and newly devised protocols recorded by paramedics or nurses. Results: 1) Male to female ratio was 1: 0.8, and the peak age of the patients were the 4th(18.8%) and 6th decade(15.3%). 2) Of the 202 patients, 84 patients were transferred for trauma and 118 for medical problems. The mean transfer time was 6±1.73 minutes. 3) The validities of prehospital triage and decisions using the trauma severity measure and the disease severity measure, were 33.3% in trauma patients and 57.6% in medical patients.4) The results for the adequacy rate in prehospital management analyzed by using the rate of necessity of treatment. performance of treatment, and adequate treatment were as follows: oxygen supply.38.1/41.6/93.8 ; wound dressing. 19.3/71.8/92.9 ; immobilization of the cervical spine, 15.8/56.3/92.9 ; application of a spinal board. 12.9/42.3/72.7 ; application of a splint, 9.9/50.0/60.0 ; manual maintenance of an airway. 9.9/55.0/63.6 ; and CPR, 4.5/66.7/0. 5) Kind of ALS(Advanced Life Support) were not conducted(peripheral IV, EKG. intubation, medical administration. defibrillation, pacing). The rates of necessity of treatment were as follows: peripheral IV, 40.6%; ECG monitoring, 23.3% ; endotracheal intubation, 8.9% ; medical administration, 8.9% ; defibrillation. 3.5%; and pacing. 1.5% Conclusion: The adequacy of prehospital triage and decisions using trauma and disease severity measures was relatively low. To improve the adequacy of BLS(Basic Life Support) and to increase the performance of ALS(Advanced Life Support), we must create challenges to develop new protocols and to supplement new equipment.

위의 유암종과 선종의 병발 1례

장재식,강혁주,이중현,서영범,윤병구,김용섭,이구,서정일,양창헌,이창우,김정란,윤환중 東國大學校醫學硏究所 2000 東國醫學 Vol.7 No.-

유암종은 전신에 퍼져 잇는 장크롬친화성 세포에서 기원하는데 위의 유암종은 비교적 드문 질환으로 모든 유암종의 1.9~2.2%에 해당하며 위에 발생하는 종양의 1% 미만에서 보고되고 있다. 유암종은 일반적으로 증상이 비특이적이고 면역조직화학검사에 의해서 진단되기 때문에 과거에는 드물게 발견되었으나 최근 내시경 기기 및 술기의 발전과 검사 빈도의 증가 및 면역조직화학검사의 발달로 진단율이 증가 추세에 있으며, 드물지만 유암종에서 선암과 공존하는 예들이 보고되고 있다. 저자들은 심와부 동통을 주소로 내원한 70세 남자 환자의 상부위장관내시경 검사에서 위체상부의 대만곡에서 0.4×0.4 cm 크기의 중간 함몰을 가진 Yamada 1형의 용종과 함께 전정부의 전벽에서 0.8×0.5 cm 크기의 융기된 점막 소견을 보여 조직학적으로 각각 위유암종 및 위선종임을 확진한 후 내시경적 용종 절제술로 치료한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Carcinoid tumors are arisen from enterochromaffin cells, which are scattered throughout the body. These tumors are composed of variable numbers of cells that contain endocrine granules in their cytoplasm, which can be identified by immunohistochemistry and electron microscopy. Gastric carcinoid tumors are relatively rare tumor, the reported incidence being 1.9~2.2% of all carcinoid tumors and less than 1% of all gastric tumors. Sometimes, composite carcinoid tumors and adenocarcinoma is reported. We experienced a case of the coincidence of carcinoid tumor and adenoma at the other site of the stomach in a 70 year old male patient. Gastrofiberscope showed 0.4×0.4 cm sized Yamada type I polyp with central depression on the greater curvature of the proximal body and 0.8×0.5 cm sized focal slightly elevated mucosa on the anterior wall of the antrum. The endoscopic biopsy specimens revealed carcinoid tumor and tubular adenoma with moderate atypism, respectively. The carcinoid tumor and adenoma were removed by endoscopic polypectomy. According to the follow-up gastrofiberoscopy after 7 month later, both lesions were nearly normal mucosa except whitish atrophic change after polypectomy.

병원성 칸디다 혈증에 관한 임상적 고찰

고경식,권선희,김병준,김구엽,서환조 대한감염학회 1995 감염 Vol.27 No.5

목 적 : 최근 칸디다혈증의 발생율이 매우 증가하여 병원 감염의 중요한 원인으로 대두되고 있다. 이에 저자등은 칸디다혈증에 대한 임상적 특성을 알아보기위하여 다음과 같이 연구하였다. 방 법 : 1988년 1월부터 1993년 12월까지 경희대학부속병원에서 발생하였던 병원성 칸디다혈증 61예를 대상으로 의무기록지를 검토하였다. 결 과 : 1) 연도별 발생 빈도는 1988년 부터 1933년까지 각각 2예, 7예, 9예, 11예, 15예, 17예로 증가하였으며, 최근에는 non-albicans 균주에 의한 감염이 증가하고 있었다. 2) 연령분포는 4-83세였으며 평균연령은 51.0±17.4세였고, 남자 32예, 여자 29예였다. 50대와 60대가 57.3%로 가장 많았다. 3) 균주별 발생빈도는 C. albicans 30예, C. tropicalis 13예, C. parapsilosis 10예, C. glabrata 6예, C. guilliermondii 1예, C. krusei 1예로서 C. albicans가 가장 많았다. 4) 기저질환으로 뇌혈관계질환이 25예(41%)로 가장 많았으며, 외과적질환 11예(18%), 고형악성종양 10예(16.4%), 혈액종양질환 9예(14.8%), 기타 내과적질환 6예(9.8%)였다. 5) 균주간 선행인자는 비슷하였으나, C. albicans와 C. tropicalis에서는 수술을 시행받은 예가 많았고, C. parapsilosis는 정주 영양 공급을 받은 경우가 많았다. 6) Amphotericin B 치료군(20예)과 fluconazole 치료군(11예) 사이에 예후에서 유의한 차이는 없었다. 7) 총 61예중 28예에서 사망하여 사망율은 45.9%였으며 정형외과적 수술을 시행받은 경우(83.3%)와 C. glabrata인 경우 사망율이 가장 높았다(83.3%). 결 론 : 칸디다 혈증은 중요한 병원 감염으로 대두되고 있으며 최근에는 non-albicans 진균주에 의한 병원성 칸디다 혈증의 발생율이 증가하는 추세이다. Background : The aim of this study is to determine the annual occurrence of nosocomial candidemia, the relation between Candida species and underlying illness, the relation bewteen Candida species and predisposing factors, and also to compare between the outcome of candidemia of the amphotericin B treatment group and that of the fluconazole treatment group. Methods : We reviewed medical records of 61 cases with nosocomial candidemia between 1988 and 1993 in Kyung Hee University Hospital retrospectively. Results : Two cases occurred in 1988, 7 in 1989, 9 in 1990, 11 in 1991, 15 in 1992, and 17 in 1993. The incidence of candidemia by non-albicans species has increased during this period and accounted for 64.7% in 1993. The infecting candida species were C. albicans(30 cases, 49.2%), C. tropicalis(13 cases, 21.3%), C. parapsilosis(10 cases, 16.4%), C. glabrata(6 cases, 9.8%), C. guilliermondii(1 case, 1.8%), and C. krusei(1 case, 1.8%). The most common underlying disease was cerebrovascular disease(41%) followed by surgical disease(18%), solid cancer(16.4%), hematological malignancies(14.8%), and other medical illness. There were no significant differences between the amphotericin B treatment group(n=20) and the fluconazole treatment group(n=11) in mortality. Overall mortality was 45.9%. The highest mortality was in patients with previous orthopaedic surgery(83.3%) and with C. glabrata candidemia(83.3%). Conclusion : Candidemia emerged as an important hospital infection and candidemia caused by non-albicans species has significantly increased in recent years.

U형 프리캐스트 프리스트레스트 콘크리트 거더를 이용한 2경간 연속 교량구조의 개발을 위한 기초연구

이환우,김명식,김광양 釜慶大學校 1997 釜慶大學校 論文集 Vol.2 No.2

The current syudy is a part of esries of research about the development of new superstructure system to overcome the engineering problems in the design of bridges of 30m to 45m in span length using the existing bridge systems. The basic concept of new system in the continuation of adjacent two simple spans composed of the precast prestressed concrete U-type sections. The partial post tensioning method is applied to create the contimuity. In this stdy, the new technique was introduced and applied with an example design of two span of 40m in span lemgth to find the possibility for pratival applicatio as a feasibility syudy. The obtained results show that the new splicing method is expected to offer significant economical and serviceability advantages.

양이장단자극을 이용한 각성유지 및 수면유도

정환목,배기성,김형식,우창진,최평,이만기 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

임신여성을 제외한 성인에서의 B군 연쇄구균 감염에 관한 임상적 고찰

고경식,권선희,안우석,이원욱,김구엽,서환조 대한감염학회 1995 감염 Vol.27 No.4

목적:B군 연쇄구균은 최근 보고에 의하면 만성 기저질환(당뇨병, 악성종양등)이 있는 성인에서 감염빈도 및 사망률, 이환율이 증가하고 있는 추세이며 그 중요성이 대두되고 있다. 이에 저자들은 B군 연쇄구균 감염의 임상양상, 기저질환(위험인자)을 알아보고, B군 연쇄구균 항균제 감수성등을 규명하고자 하였다. 방법:1986년 1월부터 1993년 12월까지 경희대학교 부속병원에서 B군 연쇄구균이 배양된 274예를 대상으로 의무기록지를 검토하였다. 결과: 1) 전체 연구대상은 274예로 98예(35.8%)가 남자였고, 176예(64.2%)가 여자였다. 이들의 연령분포를 보면 신생아군에서 감염이 많이 발생하였다 이후 감소추세를 보이다가 20대 이상에서 다시 증가 하는 추세를 보였다. 2) 감염 양상은 274명중 명확한 감염이 156명(56.9%), 추정감염이 55명(20.1%), 비감염이 63명(23.0%)이었다. 임신을 제외한 18세 이상의 성인은 231명으로 남자가 83명, 여자가 148명이었고 남여 비율은 1:1.78이었다. 이중 133예(57.6%)에서 명확한 감염이었고, 46명(19.9%)에서 추정 감염, 52명(22.5%)에서 비감염이었다. 명확한 감염환자 133명중 31명(23.3%)이 병원내 감염이였다. 3) 18세 이상의 성인 231명에서 Group B Streptococcus가 분리 동정된 감염 부위는 자궁 경부 77예(33.3%), 요 73예(31.6%), 객담및 상기도 39예(16.9%), 농 24예(10.4%)등이었다. 4) 명확한 감염을 가지고 있었던 성인 133명의 임상양상은 요로 감염 37명(28%), 자궁 경부염 37명(28%), 피부, 연조직 감염 23명(17%), 폐렴 10명(8%), 패혈증 8명(6%)등이었다. 5) 명확한 감염을 가지고 있었던 성인 133명중 92명(69%)에서 한가지 이상의 만성 기저질환이 있었으며, 이중 당뇨병 32%, 뇌 혈관 질환 21%, 고혈압 19%, 신부전 12%, 악성종양 5%등을 차지하였다. 6) 항균제 감수성 검사(251예)에서 penicillin 98.4%, cephalothin 99.6%, cefamandol 98.8%, erythromycin 96.0%, clindamycin 89.4%, oxacillin 88.8%, lincomycin 87.8%, methicillin 86.8%, minocycline 49.4%, trimethoprim-sulfamethoxazole 15.5%의 감수성을 보였다. 7) 명확한 성인 감염 133명중 6명(4.5%)이 사망하였다. 결론:B군 연쇄구균은 만성 기저질환이 있는 성인에서 감염 빈도가 높고, 치명적인 결과를 초래할수 있으므로 감염 예방 및 조기 발견, 적절한 항균제 감수성 검사에 따라 조기 치료로 사망률을 줄여야 할것으로 생각된다. Background: Several reports have suggested that the incidence of diseases caused by Group B streptococcus is increasing in nonpregnant adults, particularly those with serious underlying diseases. The objectives of this study were to define the clinical manifestations, underlying conditions(risk factors) of definite group B streptococcal diseases in nonpregnant adults and to obtain antimicrobial sensitivity of these infections. Methods: We analyzed the records of 274 cases of the Group B streptococcus isolated in Kyung-Hee University hospital between 1986 and 1993. Results: 1) Total Group B streptococcal isolates were 274 cases : Of these cases, 7 percent were 1 month of age or younger, 3 percent were older than 1 month but younger than 18 years of age, and 91 percent were 18 or older. 2) Men and nonpregnant women accounted for 87 percent (n=231) : 133 cases (57.6%) with definite infection, 46 cases(19.9%) with possible infection, and 52 cases(22.5%) with no infection. 31 cases of 133 (23.3%) nonpregnant adult with definite infection apeared to have acquired the disease nosocomially. 3) In the 133 nonpregnant adult patients, the most common clinical diagnosis were urinary tract infection(28%), and cervicitis(28%). 4) In the 133 nonpregnant adult patients, the underlying diseases or conditions were diabetes mellitus(32%), cerebrovascular accident(21%), hypertension(19%), renal failure(12%), and malignant neoplasm(5%), Sixty-nine percent of the cases had one or more underlying diseases. 5) In the antimicrobial sensitivity tests, 98.4% of isolates were sensitive to penicillin, 99.6% to cephalothin, 98,8% to cefamandol, 96.0% to erythromycin, 89.4% to clindamycin, and 49.4% to minocycline. 6) The case mortality rate was 4.5%(6 of 133). Conclusion:We found group B streptococcal infection to be a significant and apparently increasing cause of definite diseases in nonprognant adults, particularly in those with serious underlying diseases. Recognizing these infections early in the groups with serious underlying diseases will be helpful in lowering mortality.

이종마찰압접재 계면의 기계·금속조직학적 거동 및 파면특성 : STS304와 SM15C재를 중심으로 For STS304 and SM15C

오환섭,박경식,박준건,오정국,백영남 慶熙大學校 材料科學技術硏究所 1998 材料科學技術硏究論集 Vol.11 No.-

In this study is behavior of crack propagation and fracture under static tensile load, shear load, rotary bending fatigue load in friction welded dissimilar materials. Crack was observed in fine ferrite zone of SM15C and heat affected zone of STS304. Plastic flow was occured by friction welding process, so direction of crack is inclined with welded surface. Fatigue fracture most occurred in SM15C heat affected zone around interface. Fibrous zone with the view of macroscope and dimple pattern with the view of microscope were observed at fracture surface. Result is more metal micrstructure dependence than stress dependence by mechanical and metallic mechanics.

하악공 전달마취법과 Gow-Gates법의 치수마취 효과

안식환,김성교 大韓齒科保存學會 1997 Restorative Dentistry & Endodontics Vol.22 No.1