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$NiAl_0.8Fe_1.2O_4$의 Mossbauer' Spectrum연구
이철세,Lee, Cheol-Sae 배재대학교 자연과학연구소 1995 自然科學論文集 Vol.7 No.-
In this study, the Mossbauer effect of the $NiAl_0.8Fe_1.2O_4$ was investigated in the temperature range of 77K-1000K. The spectra were composed of two component, one is sixtet and the other doublet, at low temperature. From the temperature dependence of Mossbauer spectum, it is appeared that the magnetic properties of $NiAl_0.8Fe_1.2O_4$ varies from ferrimagnetism to paramagnetism as the increasing tempereture. And the magnetic relaxation patterns of the $NiAl_0.8Fe_1.2O_4$ were shown superparamagnetic effect. 본 연구에서는 온도 77K로부터 1,000K 사이에서의 $NiAl_0.8Fe_1.2O_4$Mossbauer 효과가 다루어졌다. Mossbauer spectra는 저온에서 준강자성에 의한 6선과 상자성에 의한 2중선으로 중첩되어 나타났다. 온도에 따른 효과는 $NiAl_0.8Fe_1.2O_4$의 자기적 성질이 온도상승에 따라서 ferrimagnetism으로부터 palamagnetism으로 변화되는 것으로 밝혀졌다. 그리고 자기완화 현상은 초상자성 효과에 의한 것으로나타났다.
이석열 ( Seock Yeol Lee ),이승진 ( Seung Jin Lee ),박형주 ( Hyung Joo Park ),이철세 ( Cheol Sae Lee ),이길노 ( Kihl Rho Lee ),오미혜 ( Mee Hye Oh ) 대한외상학회 2004 大韓外傷學會誌 Vol.17 No.2
A 36-year-old male was admitted to our hospital due to tibio-fibular fracture of the right leg and chest contusion. He was diagnosed as a bilateral traumatic pulmonary pseudocyst by Chest X-ray and computerized tomography. Follow-up chest CT showed incresed traumatic pulmonary pseudocyst. The patient complained of high fever and leukocytosis was occured. The patient underwent pulmonary wedge resection including traumatic pseudocyst of right upper and middle lobe. Following the operation, the patient has improved. Traumatic pulmonary pseudocyst is a rare complication after chest contusion. We present the case and review the traumatic pulmonary pseudocyst with related articles.
소아에서 천식과 연하곤란으로 진단된 종격동 기관지 낭종 - 1예 보고 -
이석열,전철우,이승진,이철세,이길노,Lee, Seock-Yeol,Jeon, Cheol-Woo,Lee, Seung-Jin,Lee, Cheol-Sae,Lee, Kihl-Rho 대한소아외과학회 2008 소아외과 Vol.14 No.1
A 19-month-old boy suffered from stridor and dysphagia. He was taking asthma medication for a few months, but symptoms did not improve. After admission, a chest CT showed a posterior mediastinal mass, which compressed the trachea and esophagus. The removed mass via open thoracotomy was a bronchogenic cyst on histopathology. Postoperatively, stridor and dysphagia disappeared. In case of persistent and refractory stridor or dysphagia in children, congenital lesions including bronchogenic cyst need to be ruled out.
이석열,이승진,이철세,이길노,오미혜,Lee, Seock-Yeol,Lee, Seung-Jin,Lee, Cheol-Sae,Lee, Kihl-Rho,Oh, Mee-Hye 대한소아외과학회 2007 소아외과 Vol.13 No.1
An 1-month old female newborn was admitted to our hospital because of jaundice which occurred at 2 days after birth. Plain chest X-ray and chest CT revealed a collapsed right middle lobe and lobar emphysema was suspected. Right upper lobectomy of the lung was done and pathologic findings showed an infantile lobar emphysema. After the operation, the newborn was discharged without complication and was followed up through the out patient clinic. Infantile lobar emphysema is rare and male dominant. Left upper lobe of the lung is the most prevalent site. Patients with infantile lobar emphysema complain of respiratory symptoms. We report one case of infantile lobar emphysema on right upper lobe of lung, in a female with no respiratory symptoms.
이석열,이승진,박형주,이철세,이길노,Lee, Seock-Yeol,Lee, Seung-Jin,Park, Hyung-Joo,Lee, Cheol-Sae,Lee, Kihl-Rho 대한소아외과학회 2004 소아외과 Vol.10 No.2
A one day old female infant was brought to the emergency room suffering from shortness of breath. An x-ray revealed the gastrointestinal tract in the right thoracic cavity. An emergency operation demonstrated eventration of the diaphragm, and a plication was performed. The baby was discharged without complication and has been followed up in the out patient clinic. Congenital diaphragmatic eventuation requiring emergency operation is rare.
A Case of Mediastinal Cavernous Hemangioma
이석열,박경배,오미혜,이승진,이철세,Lee, Seock-Yeol,Park, Kyung-Bae,Oh, Mee-Hye,Lee, Seung-Jin,Lee, Cheol-Sae Korean Association of Pediatric Surgeons 2009 소아외과 Vol.15 No.2
We report a case of cavernous hemangioma of the anterior mediastinum that was incidentally detected by chest radiography taken at a routine health check-up. A mass lesion was seen in the anterior mediastinum on computed tomography and magnetic resonance imaging. Direct surgical removal was performed for diagnosis and treatment through right thoracotomy. Histopathology confirmed the mass as a cavernous haemangioma. Post-operative course was uneventful.
말판증후군과 동반된 해리성 대동맥류에 대한 대동맥 근부 개형술(改型術): Yacoub-David 수술법
박형주,이승진,박영우,최태명,신원용,곽수달,고정관,이철세,염욱,Park, Hyung-Joo,Lee, Seong-Jin,Park, Young-Woo,Choi, Tai-Myung,Shin, Won-Yong,Kwak, Soo-Dal,Ko, Jeong-Kwan,Lee, Cheol-Sae,Youm, Wook 대한흉부심장혈관외과학회 2001 Journal of Chest Surgery (J Chest Surg) Vol.34 No.7
순턴향대학 턴안병원 흥부외과에서는 Stan$\ulcorner$old type A급성 대동맥 박리증, 대동맥 근부 동맥류 및 대동맥 폐쇄부전을 보인 45세 말판 증후군 환자에게 24m Hemashield 도관을 이용하여 Yacoub-David 수술법에 의한 대동맥 근부 개형술(aortic root remodeling procedure)을 시행하였다 수술은 환자의 대동맥 판막을 보존하면서 대동맥등을 포함한 대동맥 근부의 질병조직을 모두 제거한 후, 글이 발살바동 모양으로 3등분된 인조혈관으로 대동맥등으로부터 상행 대동맥가지 대치하는 방법으로 하였다. 환자는 수술 후 양호한 회복을 보였고 대 동맥 판막의 역류는 완전히 교정되었다. We operated on a Marfan patient who had Stanford type A acute aortic dissection, aortic root aneurysm, and aortic regurgitation. The Yacoub-David aortic root remodeling procedure which preserves native aortic valve and replaces all three aortic sinuses and ascending aorta by a Dacron graft, was applied for this patient. A 24mm Hemashield graft was designed to three tongues at the aortic root end to meet the shape of the Valsalva sinuses. The patient recovered from the procedure uneventfully and there was no aortic regurgitation posto-peratively.
이석열,이숭진,박형주,이철세,이길노,김윤정,나주옥 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
A 33-year-old female was admitted to our hospital due to removal of lung mass which indicentally detected Chest radiography. Chest computerized tomography revealed lung parenchymal cystic lesion. Open thoracotomy was done for diagnosis and therapy. Cystic lesion was communicated to bronchus and wedge resection including cystic lesion was done. Bronchogenic cyst is congenital disease and mainly locate in mediastinum. It is rare in lung parenchyme. Herein we report a case of intrapulmonary bronchogenic cyst.
폐결핵의 조기진단에 있어서 이중중합효소연쇄반응법의 유용성
조성란,최영진,김용훈,이철세,김영창,김휘준 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2
Background: Pulmonary tuberculosis is a great public health problem in Korea. Early detection of Mycobacterium tuberculosis (M. tuberculosis) in clinical samples becomes more and more important in the control of tuberculosis. Recently, molecular methods have been applied to early detection of M. tuberculosis. Methods: To elucidate the effectiveness of nested polymerase chain reaction (PCR) in early diagnosis of pulmonary tuberculosis, we peformed Acid-fast bacilli (AFB) stain, AFB culture, and nested PCR on 84 sputa. Results: 8 (9.5%) specimens were positive by AFB stain, 17 (20.2%) by AFB culture, and 15 (17.9%) by nested PCR. Using AFB culture as standard method, the sensitivity of AFB stain and nested PCR was 47.1% and 82.4%, respectively. The specificity of AFB stain and nested PCR was 100% and 98.5%, respectively. Conclusions: Nested PCR was more sensitive than AFB stain and had shorter processing time(24-48hrs) than AFB culture. So it may be effective to use nested PCR in order to detect M. tuberculosis when AFB smear Is negative.