다발성 외상시 응급 초음파검사의 의의

이강현,임경수,김선만,김영식,황성오,유수영,강성준 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

The Evaluation of blunt abdominal trauma is clinically challenging. Abdominal computed to-mography(CT) and diagnostic peritoneal lavage(DPL) has become primary diagnostic modali-ty in advanced trauma life support(ATLS). But DPL is invasive study with potential for the patients. Monitoring and resuscitation are usually suboptimal during there examinations. We examined the efficacy and role of emergency ultrasonographic(US) studies in the initial abdominal evaluation of blunt trauma patients. A prospective study was carried out on 101 blunt trauma patients from 1994, June to September. 101 patients underwent real-time US ex-amination of the chest and abdomen. Indication for emergency US included the cases of shock (systolic blood pressure<90mmHg) or tachycardia (pulse rate/min.>100) in blunt trauma pa-tients. US showed a sensitivity of 96.2%, specificity 98%, accuracy 97% in regard to indica-tion for surgery in case of blunt abdominal or thoracic trauma. US saves time, and it can be performed during the emergency care in the emergency department. US showes high sensitivity and specificty, and is the method of first choice in the evaluation of blunt trauma.

혼수상태의 외상환자에서 초음파를 이용한 흉부 및 복부손상의 진단

임경수,이강현,이진웅,이부수,황성오,유수영,강성준 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

The need for rapid diagnosis and treatment of life-threatening thoracic and intra-abdominal injury result in controversy over the appropriate triage of unconscious blunt trauma patients. To aid in early decisions for these patients, a prospective analysis of 98 patients with glasgow coma scale(GCS) scores≤8 was undertaken. Although intra-thoracic and intra-abdominal injuries were frequently identified based on systolic blood ressure, the use of clinical signs alone resulted in more missed injuries than did using the emergency ultrasonography. In normotensive patients(n=34), intra-thoracic injuries was identified in one patient(2.9%), and intra-abdominal injuries were in 7 patients(20.6%). In shock(systolic blood pressure<90mmHg) Pa-tients(n=64), thoracic injuries and intra-abdominal injuries were diagnosed in 8(12.5%) and 27 patients(42.3%), thoracic and abdominal combined injuries were identified in 11 patients(17.2%). The sensitivity, specificity, and accuracy of emergency ultrasonography were 96.3%, 91.7%, 94.9%. This study suggests that all unconscious trauma patients undergo immediate emergency ultrasonography to prevent missing life-threatening injuries.

인위적 근피로 유발후 단축성과 신장성 근수축 운동시 근 토크의 변화

강영석,안창영,윤성원,나윤수 서울여자대학교 자연과학연구소 1995 자연과학연구논문집 Vol.6 No.-

The purpose of this study was to investigate the change of the peak torque, average power and total work of muscle function in the fatigue during eccentric(ECC) and concentric contraction (Con). Subjects were seven (7) adults man, who were paticipated in the ECC and CON experiments. Their gastronemus muscle were measured by CYBEX(Lurnax Co.) 6000system. Muscle fatigue was induced by 50 repetitionplantar flexion at 180 /sec load speed. In pre and post test, peak, average power and total work were analized when subjects were tested plantar flexion at 180/sec load speed. the summary of this results is as following : 1. Peak torque in the ECC were significantly higher than that of the CON. 2. Average power and total work of the Eccentric contraction appeared a higher than that of the Concentric contraction significantly. As a results. peak torque, average power and total workin the ECC was significantly higher than that of the CON throughout the experiments. In this fact, Mechanical efficiency in the ECC will expect to be higher than that of the CON.

조업도를 고려한 최적 설비의 구입 및 교체계획

강성수,김원경 慶南大學校 附設 工業技術硏究所 1988 硏究論文集 Vol.6 No.-

지금까지의 설비의 구입이나 교체는 설비의 감가상각비나 수선비, 조업열성 등 제반비용에 대한 연등가비용이 최소인 대체안을 선정하는 방법이다. 그러나 이러한 방법은 조업도의 변화에 따른 제반비용(설비대수의 증감, 잔업비용, 외주비용 등)이 반영되지 않아 전체비용을 최소로 하는 설비의 대수나 구입 및 교체 시기를 결정하는데 기여하지 못하고 있다. 본 연구는 조업도의 변화에 따른 설비 대수의 변화, 운영비의 증감, 잔업비용 및 외주비용 등의 변화에 대하여 연등가비용이 최소가 되는 최적설비의 구입 및 교체계획을 수립하는 절차와 방법을 제시한다. Until now the method of purchasing and replacement of equipment is selecting the alternative which minimize annual equivalent cost of depreciation, maintenance, operating inferiority of equipment. But this method can't contribute to select the alternative which obtain the optimal time of purchasing and replacement of equipment and which minimize the total annual equivalent in consideration of operating, depreciation, overtime and outside cost of equipment resulted in various production volumes. This study represents the procedure and the method of selecting optimal planning which minimize the total cost of purchasing and replacement of equipment under consideration of various production volumes.

오스테나이트계 TP347 스테인레스강의 파괴저항특성 평가

강병구,김수용,석창성 成均館大學校 科學技術硏究所 1999 論文集 Vol.50 No.1

The objective of this paper is to evaluate the material properties of TP347 stainless steel and their associated welds and the welded joint of the carbon steel and the stainless steel manufactured for primary coolant system of Ulchin 3 & 4 nuclear power plants. The effect of various parameters such as pipe size, welding method, chemical composition, crack plane orientation, metallography and fractography on the material properties were discussed. Test results showed that the effect of pipe size on fracture toughness was negligible while the effect of welding method on fracture toughness was significant. In addition, the drop of fracture toughness in the field fabrication weld of TP347 stainless steel is probably due to the large amount of σ-phase precipitated on the δ-ferrite boundary and the large size dimple.

비정상 상태에서 원주의 온도 분포에 관한 연구

강창수,이충원,이상룡 慶北大學校 1982 論文集 Vol.34 No.-

The temperature distributions for a circular cylinder with the temperature profile of square wave between 180℃ and 35℃ at bottom were investigated numerically by ADI method. It was shown that during the period, which the temperature at bottom hold at 35℃, a local maximum temperature point was found at the interior of cylinder and it moved upward as time increased. And the heat transfer coefficients for a lead cylinder were investigated experimentally under three different conditions such as free and forced convection in air and water cooling by applying lumped heat capacity system.

원적산 봉수대 주변정비 기본계획

이상진,김기수,강영조,조승래,홍순연 東亞大學校 建設技術硏究所 2006 硏究論文集 Vol.29 No.2

문화재란 문화가치가 있는 사물로서 국가 가 종교적·세속적 근거에 따라 특별히 지정 한 재산이다. 문화재는 그것이 구현하는 정신적 가치와 시각적 음향적으로 표현하는 수단으로서 그 나라의 독특하고, 다양한 주체성을 보존하는 중요한 매체이기도 하다. 그러므로 문화재는 한나라의 민족역사와 문화로서 과거의 모습을 통해 현재 그리고 나아가 미래를 연결시키는 하나의 매개체인 것이다. 또한 문화재는 그 지역민에게 향토사적 인 자긍심 및 연대의식을 고취시키는 동시에 나아가 한 나라, 세계적인 관심사로 여겨 야 할 것이다. 원적산 봉수대는 양산군청 소재지에서 북쪽으로 약 9.2㎞, 통도사입구 마을인 신평에서 남쪽으로 8㎞지점에 있다. 이 봉수대는 경상남도 기념물 제 118호로써 원적산봉수대 보존회에 의해 복원된 문화재이다. 즉 다른 지역의 문화재와 달리 잊혀 져가는 문화재의 재생을 통해 다시 태어난 문화재인 것이다. 원적산 봉수대 주변정비 기본계획의 목적 은 지역민의 자긍심으로 복원된 봉수대와 주 변과 접근로를 체계적으로 정비를 함으로써 접근성, 전통성, 보존성을 높이고자 한다. 특히, 문화재보호를 위한 제반 법규 및 현지여건에 부합하는 정비방향을 설정하고, 전문 인력과 관련문헌을 바탕으로 문화재 주변을 역사성과 주민친화성, 기능성, 관광성을 함께 갖춘 문화공간으로서의 미래지향적 문화재정비 계획을 추구하고자 한다.

한국인 태아 및 사산아에서 얼굴신경에 대한 형태학적 연구

강양수,김종중,김복,정상봉,문영민,설경수,정윤영 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.3

It is critical that the accurate anatomy of the facial nerve IS known for uncomplicated successful facial surgery. Such an operation is hazardous because of the intimate relationship between the facial nerve and the expressional muscles. It is hoped that such basic information will be helpful to those who treat conditions involving the facial region. In order to define the detail of this relationship, many studies have been undertaken on dissected adult specimens. This study was based on Korean fetus and stillborn infant cadaveric dissections, and describes anatomical variations of the peripheral branches of the facial nerve that pose a potential danger in a number of surgical procedure on the face. The branching patterns were classified into six types: the frequencies of occurrence were: type I, 4.9%; type II, 24.4%; type III, 34.1%; type IV, 19.5%; type V, 12.2%; and type VI, 4.9%. Types II, III and IV together accounted for almost 80% of the specimens. In the discussion we compare the results of the present study with those of others and try to clarify the anatomical characteristics of the facial nerve in infants, which demand that special attention be paid to the avoidance of injuries during facial surgery.

진성 수소화된 비정질 규소에서의 급냉효과

康聖洙 대구산업정보대학 1998 논문집 Vol.12 No.2

In this work, the rapid cooling effects were investigated for the hydrogenated amorphous silicon (a-Si : H) films prepared by decomposition of pure silane. In general, the rapid cooling of doped a-Si : H usually produced more conductive states(σ_(FC)) than slowly cooled(annealed) state(σ_(FC)). Undoped a-Si : H, however, showed even the state of σ_(FC)<σ_(SC) as well as the state of σ_(FC)>σ_(SC). The equilibrium temperature, T_(E), in which samples are reached to thermal equilibrium within few minutes linearly increased with T_(s) which is the most importtant parameter to control the hydrogen content(C_(H)) of samples. In order to interpret our data in undoped a-Si : H, we proposed a model based on the hydrogen-glass and weak bond-dangling bond conversion model which had already been proposed for doped a-Si : H.

大邱地方 一部 大學生들의 吸煙實態

姜福秀,芮旻海,李性寬 慶北大學校 醫科大學 1980 慶北醫大誌 Vol.21 No.2

1980년 10월 1일부터 1개월간 경북대학교 의과대학 남학생 303명과 대구시내 일반 대학생 255명을 대상으로 흡연에 관한 실태를 조사한 성적을 요약하면 다음과 같다. 1. 총대상자 558명중 흡연학생은 339명으로 흡연율은 60.7%로 나타났고, 의대생의 경우 62.4%, 일반 대학생의 경우는 58.8%의 흡연율을 나타내었다. 흡연 중단율은 전체 19.9%이며 의대생의 경우 16.5% 일반 대학생의 겅우 23.9%로 나타났다. 2. 흡연시작 연령은 대체로 20세 전후가 65.7%로 나타났으며 18세 이전의 고교시절부터 흡연을 경험한 학생이 23%로 나타났다. 3. 흡연기간은 과반수 이상인 56.2%가 5년미만인 것으로 나타났고 그중 2년 이상 3년 미만이 22.1%로 제일 높게 나타났다. 4. 흡연량은 하루 14개피 미만을 피우는 학생이 전체 63.1%로 제일 많았으며 25개피 이상 피우는 학생은 3.3%로 나타났다. 5. 흡연과 음주와의 관계에서 흡연하는 학생중 91.7%가 술을 마시는 것으로 나타났다. 6. 흡연동기로는 37.7%에 해당하는 학생이 호기심에 의해서 흡연을 시작했으며 17.7%의 학생은 선배 친구의 권유로 담배를 처음 시작한 것으로 나타났다. 7. 장차 흡연에 대한 태도는 계속 피우겠다는 학생이 45.7%, 감량 하겠다는 학생이 42.8%, 금연하겠다는 학생이 11.8%로 나타났으며, 의대생의 경우에서 60.3%가 금연 및 감량 하겠다는 것으로 나타나 일반대학생 46.7%보다 높은 율을 보였다. 8. 금연 및 감량의 이유조사에서 80%에 해당하는 대부분의 학생이 건강상 이유로 나타났고 경제적 이유도 8.5%나 되었다. 9. 흡연과 관계되는 증상조사에서 기침, 객담, 호흡곤란을 호소하는 빈도가 비흡연군에 비해 흡연군이 더 높게 나타났으며, 만성 폐쇄성 호흡기 질환에 이환되는 빈도도 흡연군이 비흡연군보다 높은 경향을 나타 내었다. The present study was conducted to investigate smoking status on 303 medical students and 255 non-medical students in Taegu, for 1 month from October 1, 1980. The results obtained are summarized as follows; 339 students of 558 subjects, 60.7 percent smoked. The percentage of medical students smoking showed 62.4 and the percentage of non-medical students was 58.8. Regarding the age started to smoke, 67.5 percent of total smokers commenced smoking around the age of 20 and 23 percent experienced smoking before the age of 18. In the regard to the average daily number of cigarettes smoking, 63.1 percent of total smokers consumed under 14 cigarettes, 3.3 percent smoked 25 or more cigarettes a day. Alcohol consumption was closely associated with smoking. 91.7 percent of total smokers revealed drinker. The commonest motives for starting the smoking habit were curiosity and the influence of friends who already smoked(55.4%). Considering attitude toward smoking habits in the future, 54.6 percent of students said they would stop or reduce smoking. The commonest reason for stopping and reducing the smoking habit was health hazard(80%). The complaints of cough with sputum and shortness of breath revealed higher rates among smokers than among non-smokers. Smokers were more likely to suffer from chronic bronchitis compared to non-smokers.