• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2004년도 봄 학술발표회 논문집
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• pp.447-453
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• 2004

Various structural materials have been used in construction projects using stones, connotes, and steels materials. Among of these projects, concretes may use widely because concretes have high compressive strength, and comparatively easy maintenance and management. Reinforced concrete Buildings will be deteriorated as time passed. These problems will be accelerated by propagation of cracks. In order to manage such cracks, time, efforts and expense are required. In this study, leakages of fluorescence and adhesive material were investigated using glass sensors that were embedded in a model beam and column. In addition, currents in glass pipe sensor were observed to find leakage of liquid in glass pipes. Progressive cracks were generated by fracture of glass me sensor. In this investigation, a reinforcement clothing system was wrapped for a glass pipe sensor, The glass pipe sensor that can make control and reinforce cracks simultaneously.

• Journal of Chest Surgery
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• 제50권5호
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• pp.407-410
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• 2017

Traumatic chylothorax after blunt chest trauma alone is considered rare. Our patient was a 27-year-old female who was in a motorcycle accident and sustained blunt thoracic and traumatic thoracic aortic injuries with T1-T2 vertebral subluxation. She underwent thoracic endovascular aortic repair from T4 to T9 without any thoracic or spinal surgery. On postoperative day 7, the drainage from her left chest turned into a milky-white fluid indicative of chyle leakage. The patient was treated conservatively for 2 weeks and then the chest drain was safely removed. The results show that traumatic chylothorax can be successfully managed with conservative treatment.

• 콘크리트학회지
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• 제14권2호
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• pp.70-76
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• 2002

지하철, 고속철도, 신공항, 공동구, 지하보도, 지하차도, 하수도, 도로 및 철도 등 의 지하구조에는 일반적으로 박스형태의 콘크리트 구조물이 건설되고 있다. 1990년 대 중반 이후 시공 및 사용중인 지하 박스 콘크리트 구조물의 균열 및 누수 등의 문제점이 사회적인 문제로 부각되기 시작하였다. 이러한 지하 박스 콘크리트 구조물에 발생할 수 있는 문제점은 크게 결함(defect), 손상(damage), 열화(deterioration)의 3가지로 구분될 수 있으며, 이들 원인은 구조물에 균열(cracking), 누수(leakage), 처짐(deflection), 부동침하(settlement) 재료분리(segregation) , 박리(delamination), 부식(corrosion), 박락(spalling)등의 현상으로 나타난다.(중략)

• Journal of Gastric Cancer
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• 제13권4호
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• pp.263-265
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• 2013

Intussusception is a rare cause of postoperative intestinal obstruction in adults. Many retrograde intussusceptions occur during the period following gastrectomy. A 77-year-old woman visited our hospital because of detected gastric adenocarcinoma. She received radical total gastrectomy with Roux-en-Y esophagojejunostomy. On the fifth postoperative day, she complained of abdominal pain, and we found leakage at the esophagojejunostomy site and dilatation of the Roux limb and the afferent limb of the jejunojejunostomy. Emergency surgery was performed. Retrograde jejunojejunal intussusception accompanied with a nasojejunal feeding tube was found at the efferent loop of the jejunojejunostomy. No ischemic change was found; therefore, manual reduction and primary repair of esophagojejunostomy was performed. She was discharged without complications on the 23rd re-postoperativeday. We suggest that the nasojejunal feeding tube acted as a trigger of intussusception because there was no definitive small bowel mass or postoperative adhesion. We present our findings here along with a brief review of the literature.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2002년도 학술논문발표회
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• pp.65-68
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• 2002

This study of concrete movement confronting a scope inspects the problems about the waterproofing method and leakage/repairement at present and research the mechanism with the variety of applying examples introducing adhesion and inflation using the flexible type of waterproofing and repairement and the substitution method developed with polymer resign composite. The polymer resign transmitted into adhesion or inflation materials under wet environment absorbs adjoining moisture, wraps impurities of concrete surface. get the waterproofing layer and concrete surface adhere toughly, reorganizes the impaired waterproofing layer and get over the detachment of it from concrete surface.

• Journal of Chest Surgery
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• 제23권2호
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• pp.396-401
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• 1990

This report is an review of 5 cases of congenital esophageal atresia associated with tracheoesophageal fistula which were treated in the Department of Thoracic and Cardiovascular Surgery, Chonnam University Hospital from January, 1987 to February, 1989. First patient that was associated with VATER’s syndrome and moderate pneumonia, i.e., Waterston Category C was treated by gastrostomy, colostomy and primary anastomosis, but expired. Second patient that was weighed 2.2 Kg, suffered from moderate pneumonia was treated by gastrostomy, but died from asphyxia. The other patients were treated by primary repair. Any anastomotic leakage or gastroesophageal reflux was not found in these cases, but mild anastomotic strictures were found in these patients by postoperative esophagography. However, esophageal dilatation of anastomotic strictures was successful using the Griintzig balloon catheter.

• Journal of Korean Neurosurgical Society
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• 제46권5호
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• pp.501-504
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• 2009

Remote cerebellar hemorrhage (RCH) is rare but potentially lethal as a complication of spinal surgery. We recently experienced a case of RCH in a 61-year-old man who showed mental deterioration after lumbar spinal surgery. There was dural tearing with subsequent cerebrospinal fluid (CSF) loss during the surgery. Brain computed tomography scan revealed cerebellar hemorrhage, 3rd and 4th ventricular hemorrhage and pneumocephalus. He underwent suboccipital craniectomy and hematoma removal. The most important pathomechanism leading to RCH after spinal surgery has been known to be venous bleeding due to caudal sagging of cerebellum by rapid leak of large amount of CSF which seems to be related with this case. Dural repair and minimizing CSF loss after intraoperative dural tearing would be helpful to prevent postoperative RCH.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 학술대회 논문집 전문대학교육위원
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• pp.132-134
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• 2003

Insulator that is used in electric power equipment superannuation and being damaged disorder can. Such as defected insulator has repair or change must because defective influence in electrical equipment. There are many method developed for detecting the defected insulators, analyzed various test of devide voltage, electric field, ultrasonic and discharge pulse. But methods of detecting ultrasonic of discharge, electric field or leakage current could not application in the field, In this paper, we compare the advantage and the limitation of the method to detect defected insulator, and wish proposed using corona camera.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.610-616
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• 2003

Recently, the common concern of nuclear power industry in the development of technology mitigating and preventing the aging of steam generator tubes prevails, because the trends of steam generator flaws at Uljin unit #1,2 and KSNP(Korea Standard Nuclear Power Plant) impose a burden on the operation of nuclear power plant. While the regulatory agency is demanding the establishment of the advanced general performance maintenance system, the steam generator management program adapting advanced technology is being developed which may comply with EPRI PWR SG Guidelines based on NEI 97-06 ‘ General Guidelines including all the maintenance aspects consist of the tube integrity assessment criteria, repair limit, allowable leakage level, water chemistry will be composed in order to obtain the approval of regulatory agency and be applied to Nuclear power plant early 2005. This presentation is to introduce maintenance state including SG tube degradation and main contents of advanced SG management program being developed, and futhermore update present and future plan, and estimate the alternation after the completion.

• 한국소음진동공학회논문집
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• 제14권2호
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• pp.95-104
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• 2004

Leaks in underground pipelines can cause social, environmental and economical problems. One of relevant countermeasures against leaks is to find and repair of leak points of the pipes. Leak noise is a good source to identify the location of leak points of the pipelines. Although there have been several methods to detect the leak location with leak noise, such as listening rods, hydrophones or ground microphones, they have not been so efficient tools. In this paper, accelermeters aroused to detect leak locations which could provide an easier and more efficient method. Filtering, signal processing and algorithm of raw input data from sensors for the detection of leak location are described. A 120m-long and a 70m-long experimental pipeline systems are installed and the results with the systems show that the algorithm with the accelerometers offers accurate pinpointing for leaks location detection. Theoretical analysis of sound wave propagation speed of water in underground pipes, which is critically important in leak locating, is also described.