• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.249-250
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• 2015

This study contemplated the descending air current from the smoke layers related to the smoke logging phenomenon in the Water Mist applied design for effective evacuation safety design. As a result, database on the average particle diameter, particle velocity and distribution of sprinkling was obtained and the relationship between the water amount and particle diameter was obtained. Also Descending smoke velocity was significantly faster to 9.8m/s, it is determined that appeared rapidly by a high water pressure.

• 한국정보전자통신기술학회논문지
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• 제1권3호
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• pp.21-26
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• 2008

본 연구에서는 심장 부정맥의 조기증상인 조기심실수축(premature ventricular contraction, PVC)을 검출하기 위하여 심전도 신호로부터 하강 기울기 추적파(descending slope tracing wave, DSTW)와 Form Factor(FF)를 추출하였으며 효율적인 방법을 찾기 위해 두 가지 특징을 이용한 결과를 비교하였다. 우선 심전도의 정확한 R파의 위치를 검출하기 위하여 2차 미분과 하강 기울기 추적파를 적용하였으며, 이 PVC검출법을 검증하기 위하여 MIT/BIH 데이터베이스에서 PVC를 포함한 심전도를 대상으로 위 방법을 적용하여 검출 방법과 비교하여 그 효용성을 확인하였다.

• Investigative Magnetic Resonance Imaging
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• 제23권2호
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• pp.162-166
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• 2019

Undifferentiated pleomorphic sarcoma (UPS) arising from the descending thoracic aorta is a rare type of tumor. To our knowledge, only a few cases have been reported in the literature. We present computed tomography (CT) and magnetic resonance imaging findings of a 43-year-old male patient with undifferentiated pleomorphic sarcoma of the descending thoracic aorta, which showed enhancement on only magnetic resonance imaging (MRI). MRI with contrast enhancement may be useful in differentiating an aortic tumor from atherosclerotic disease.

• Archives of Plastic Surgery
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• 제46권1호
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• pp.84-87
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• 2019

With the recent development in microsurgery, the use of a perforator flap has been widely implemented. If the length of the ALT flap pedicle is insufficient despite adequate preoperative planning, pedicle length extension is necessary. We planned for a reverse ALT free flap using the distal vessel of the descending branch for pedicle length extension in the case of ALT perforator branch originating from the proximal portion of the descending branch. For the management of venous congestion, the distal venae comitantes were anastomosed to the proximal venous stump in an antegrade manner, successfully resolving the venous congestion. Modified reverse-flow ALT free flap, wherein the venae comitantes are anastomosed to the proximal vein stump, is a good option that allows for relatively simple pedicle extension within the same operative field when securing an adequate pedicle length is difficult because of the origin of the perforator from the proximal descending branch, unlike the initial surgical plan.

• Journal of Chest Surgery
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• 제54권6호
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• pp.509-512
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• 2021

Extensive thoracic aortic disease involving the ascending aorta, the aortic arch, and the descending thoracic aorta may require multiple surgical and interventional managements, which impose a burden in terms of cumulative surgical trauma and the risk of interval mortality. Herein, we describe a single-stage arch and descending thoracic aorta replacement via sternotomy in a patient with multiple comorbidities presenting with an extensive thoracic aortic aneurysm.

• Journal of Chest Surgery
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• 제43권6호
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• pp.753-757
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• 2010

식도 파열 후 발생한 식도 흉막루 및 대동맥 흉막루를 식도와 대동맥 이중 우회술로 치험하여 보고하고자 한다. 48세 남자가 폭발 사고로 인한 손상으로 하부 식도 파열을 진단받았다. 외부 병원에서 1차례 식도 봉합술을 시행받았으나 식도 누출이 지속되었고, 이로 인해 좌측 흉강의 농흉이 동반되어 있었고, 이차적인 대동맥 손상으로 흉부 하행 대동맥에 스텐트를 삽입한 상태로 본원으로 전원되었다. 반복적인 수술 및 농흉으로 인한 유착 및 대동맥 손상을 고려하여 흉골 하행 경로를 통해 식도-위 우회술을 시행하였다. 남아있는 농흉은 감염 징후 없이 만성화 단계를 거치던 중 흉관 삽입 부위로 출혈이 관찰되었다. 검사 결과 흉부 하행 대동맥의 감염성 동맥류로 대동맥 벽이 약해진 상태가 확인되어 대동맥 우회술을 시행하였다. 우측 흉강을 통해 상행 대동맥과 복부 대동맥에 인조혈관으로 우회술을 시행하였고, 흉부 대동액 부위는 결찰하였다. 이후 원위부 결찰 부위에 남아 있는 개통 부위에 대해 혈관 플러그(vascular plug)를 이용하여 색전술을 시행하였다. 환자는 더 이상 출혈 없이 4개월째 외래 관찰 중이다.

• Journal of Acupuncture Research
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• 제28권4호
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• pp.85-92
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• 2011

Objectives : This study was designed to compare the effect between method of regulating ascending kidney water and descending heart fire and sweet bee venom pharmacopuncture on peripheral facial paralysis. Methods : We investigated 30 cases of patient with peripheral facial paralysis who visited at Dept. of Acupuncture & Moxibustion, of Oriental Medicine Dong-eui University from November 29, 2010 to May 15, 2011. Subjects were divided randomly into two groups, group A and group B. We applied method of regulating ascending kidney water and descending heart fire twice or three times a week for group A and sweet bee venom pharmacopuncture with same cycle for group B. We measured the effect of treatment to each group five times by using Yanagihara's unweighed grading system. at first examination, after 1 week, 2 weeks, 3 weeks, and 4 weeks. Results : Both groups showed significant improvement in Yanagihara's scores. And group A was improved better than group B for two weeks from the first examination significantly. But after one week from then, the Yanagihara's scores of group B were higher than those of group A significantly. There were no significant differences during other period. Conclusions : Method of regulating ascending kidney water and descending heart fire is more effective than sweet bee venom pharmacopuncture on peripheral facial paralysis during acute period. And after acute period, sweet bee venom pharmacopuncture is more effective than method of regulating ascending kidney water and descending heart fire.

• Journal of Chest Surgery
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• 제24권5호
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• pp.505-509
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• 1991

Rupture or laceration of the aorta is a more common result of nonpenetrating traumatic injury than is generally appreciated. If the lesion is promptly diagnosed, a appropriate surgical treatment may be life-saving. Diagnosis may be difficult and at times the rupture may remain clinically silent for variable period.< A 34 - year old male patient had sustained steering wheel injury to his chest during automobile accident 8 weeks prior to admission. The diagnosis of traumatic aneurysm of the aorta was delayed as he was asymptomatic. Surgical repair of false aneurysm of the descending aorta was successfully performed by partial cardiopulmonary bypass through the femoral artery and vein.

• Journal of Chest Surgery
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• 제13권2호
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• pp.125-129
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• 1980

A patient with anomalous coronary artery crossing right ventricular outflow tract in association with Tetralogy of Fallot underwent total correction. The left anterior descending coronary artery was originated from right coronary artery anterior to the pulmonary valve ring. The incision from outflow tract to pulmonary artery tunneled underneath the aberrant artery and patch graft across the pulmonary valve ring to enlarge outflow of right ventricle and stenotic pulmonary valve ring.

• 설비공학논문집
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• 제12권11호
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• pp.1038-1047
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• 2000

The objective of this study is to develop an optimized Artificial Neural Network(ANN) model to predict the descending time of room air temperature. For this, program for predicting room air temperature and ANN program using generalized delta rule were collected through simulation for predicting room air temperature. ANN was trained and the ANN model having the optimized values-learning rate, moment, bias, number of hidden layer, and number of neuron of hidden layer was presented.