• Journal of Chest Surgery
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• 제35권8호
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• pp.630-633
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• 2002

Although the incidence of descending necrotizing mediastinitis(DNM) is low, this is a serious disease because it"s mortality have been reported to be as high as 40∼50%. Currently, many authors have emphasized aggressive surgical approaches rather than medical treatment alone. We report good results in 2 DNM patients treated by less invasive approach with video-assisted thoracoscopic surgery, Less invasive methods with video-assisted thoracoscopic surgery can reduce hospital stay and morbidity if effective drainage can be achieved in selected DNM patients.

• Journal of Chest Surgery
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• 제18권2호
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• pp.320-326
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• 1985

Pulmonary sequestration occurs when some disturbance produces a cystic mass of nonfunctioning lung tissue which lacks normal communication with the tracheobronchial tree. Between 1971 and 1985, pulmonary sequestration was diagnosed in 11 patients, ranging age from 3 to 29 years. All sequestration were intralobar type. Definitive diagnosis can only be obtained by aortography and/or surgical exploration in 10 cases. The other one was confirmed by pathologic examination postoperatively. The presenting complaints were mostly recurrent local pulmonary infection, but in 2 cases mediastinal mass with respiratory symptoms was presented, and cardiac murmur was only finding in one case. Preoperative diagnostic procedure revealed 3 associated anomalies which were funnel chest, right aortic arch, and pulmonic stenosis with vascular ring. Operative treatment for sequestration was lobectomy in 10 cases, and a segmentectomy in one. There was no operative mortality, but 3 complications [empyema, B-P fistula, post-op bleeding] which were controlled by subsequent operations or conservative measure. Aortography is strongly advocated not only for its diagnostic value, but for its preoperative localization of the aberrant vessels that are the major concern to the surgeon.

• Journal of Chest Surgery
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• 제11권3호
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• pp.359-363
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• 1978

This is a case report of surgically treated esophageal traction diverticulum which was resulted from postpneumonectomy empyema. In March, 1976, left lower lobectomy and thoracoplasty were performed at a hospital to treat long standing lung abscess, after operation it developed into empyema. One year later [April, 1977], We did decortication and left upper lobectomy[ultimate pneumonectomy], which was followed by empyema again, 3 months later it developed esophagopleurocutaneous fistula. Esophagograms bowed an adult thumb tip sized traction diverticulum in the midportion of the esophagus. Finally in January, 1978, after 6 months of gastrostomy feeding, fistulectomy and diverticulectomy were performed The funnel shaped diverticulum was in midesophagus and retracted by surrounding inflammatory scar tissue. Now the postoperative course was uneventful.

• 한국정밀공학회지
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• 제20권1호
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• pp.126-134
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• 2003

In this study, we suggest a environmentally-conscious and dry cleaning process mechanism for the more useful recycling of end-of-life CRT, and also develop a prototype cleaning system to verify the faulty of the designed mechanism. This system accommodates the specifications of 14∼32" end-of-life CRT. In experimental result, it is expected that the developed system improve the productivity up to 10% and decrease the loss rate of cleaning glass 3∼4 times than the glass blasting methods.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1994년도 가을 학술발표회 논문집
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• pp.121-126
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• 1994

In this study, several rheological properties of binder pastes and concrete are investigated for the development of commercially available fly ash super-flowing concrete. Fly ash contents with 5 leves(0, 10, 20, 30, 40%), slag contents with 6 levels(0, 5, 15, 25, 35, 45%), and water-binder ratios with 4 levels(30, 33, 36, 39%) are selected for test variables to evaluate the super-flowing characteristics of binder pastes. For the estimation of the workability of super-flowing concrete, slump flow, funnel time, box height, and L-flow are measured and compared. As the results, the flow is decreased and the viscosity is increased with increasing fly ash content. Super-flowing concrete is succesfully produced with 30% fly ash replacement.

• Journal of Chest Surgery
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• 제34권2호
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• pp.167-172
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• 2001

배경: 누두흉은 앞가슴 기형 중 가장 흔하며 Meyer 등이 1911년 수술적 교정을 시행한 이래로 많은 술식들이 개발되어 왔다. 이들의 대부분은 전흉벽에 상처를 내고 늑연골을 자르는 과정이 필요하였다. 그러나 Nuss 등에 의해서 상기 과정없이 작은 옆가슴의 상처와 stainless steel bar로 흉골의 기형을 교정하는 국소침습적 방법이 개발되었다. 대상 및 방법: 1999년 11월부터 2000년 7월까지 누두흉의 교정을 원하는 환자 14예를 대상으로 하였다. 수술은 15세미만에서는 pectus bar를 1개를 사용하였고 그 이상에서는 2개를 사용하여 교정하였다. 결과: 남자는 11예, 여자는 3예 였으며 나이는 2세에서 52세 사이였다. 누두흉 지표는 5.3$\pm$1.84였고 비대칭지표는 1.06$\pm$0.03이였다. 수술 후 2일째 모두 일반병실로 올라갔다. 평균 재원기간은 4.2일이였다. 술후 합병증으로 성인에서 기흉 1예, 혈흉 1예, 그리고 나중에 발생한 흉막액 1예가 있었다. 결론: 누두흉에서 Nuss 술식으로 좋은 결과를 얻었다. 성인에서도 bar 2개를 이용하여 교정이 가능하였으나 소아에 비하여 합병증이 많이 발생하였는데 이는 성인에서 근육이 발달되어 있고, 뼈의 골화가 다 진행되었기 때문이다.

• Journal of Chest Surgery
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• 제37권6호
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• pp.536-538
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• 2004

선천성 심기형과 흉벽기형이 동반되어 있는 경우 이 두 질환을 동시에 수술하는 경우에 변형된 늑연골의 광범위한 절제에 따른 합병증이 단점으로 지적되고 있다. 본원 흉부외과에서는 부분 방실중격 결손증과 오목가슴이 동반된 8세 환아에서 개심술 시에 Nuss 술식을 이용하여 오목가슴을 교정함으로써 광범위한 늑골절제에 따른 수술시간의 지연이나 출혈, 흉벽의 불안정성 등의 단점없이 좋은 결과를 얻었기에 이를 보고하는 바이다.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 1992년도 한국우주과학회보 제2권1호
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• pp.7.2-7
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• 1993

The interaction between the magnetic field and the accreting matter in the magnetic compact star has taken into account in order to find some constraints between physical paramerters in these systems. We show that the interaction radius, where the matter begins to funnel in the magnetosphere, can be described as a function of the magnetic moment acctetion rate and the width of the interaction zone. This radius, after estimated iteratively for a given parameter set has been used in order to study the radiation of X-rays in the magnetic compact star. Some results of such study in context with the interaction radius in the intermediate polar have been discussed.

• Journal of Korean Neurosurgical Society
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• 제40권4호
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• pp.293-295
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• 2006

Infundibular dilatation is funnel-shaped symmetrical enlargement that occurs at the origin of cerebral arteries and which is apparent on 7 to 25% of normal angiograms. Infundibular dilatation is frequently considered a normal anatomic variation of no pathologic significance. The authors report a case in which an aneurysm developed on an infundibular dilatation of the posterior communicating artery [PComA]. A 72-year-old woman presented with severe headache, nausea, and vomiting. Digital subtraction angiography showed a saccular aneurysm arising from the origin of the left PComA. Operative findings revealed the aneurysm and infundibular widening of the right PComA. The aneurysm was successfully obliterated. Whether infundibular dilatation is a pre-aneurysmal state or a benign dilatation is controversial. However, we believe infundibular dilatation of the PComA in this case may have served as a pre-aneurysmal lesion.

• Journal of Chest Surgery
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• 제45권6호
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• pp.418-420
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• 2012

Pectus excavatum is rare, but it is the most common type of sternal congenital disorder. There are many surgical methods to correct pectus excavatum such as the Ravitch method, Wada method, Silastic mold method, and the Nuss operation. We report a case of minimal invasive surgery for pectus excavatum using a polyvinyl alcohol sponge.