• Proceedings of the Korea Air Pollution Research Association Conference
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• 2007.10a
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• pp.473-474
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• 2007

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2008.10a
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• pp.196-198
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• 2008

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2007.05a
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• pp.257-258
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• 2007

• Proceedings of the Korean Fiber Society Conference
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• 1998.10a
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• pp.489-492
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• 1998

흡착 기능을 가지는 소재로서 오래 전부터 사용되어 온 활성탄소는 최근 환경에 대한 관심이 고조되면서 새삼 주목의 대상이 되고 있는 소재이다. 제품의 형태는 사용 목적에 따라 다르지만 보편화 된 것은 주로 입상 및 분말 상이다. 하지만 이러한 형태는 비표면적이 작고 기공분포가 넓은 단점 때문에 미세 오염물의 제거에는 부적합한 면이 있다[1]. (중략)

• Proceedings of the KTCVS Conference
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• 1998.10a
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• pp.128-128
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• 1998

• Journal of Chest Surgery
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• v.35 no.2
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• pp.87-93
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• 2002

Background: Predicting the important role of intercellular adhesion molecule-1 expression on the acute ischemia-reperfusion injury, we set out to demonstrate it by assessing the degree of expression of ICAM-1 after warm ischemia-reperfusion in canine unilateral lung ischemia model. Material and Method: Left unilateral lung ischemia was induced by clamping the left hilum for 100 minutes in seven adult mongrel dogs. After reperfusion, various hemodynamic pararmeters and blood gases were analyzed for 4 hours, while intermittently clamping the right hilum in order to allow observation of the injured Ieft lung function. The pulmonary venous blood was collected serially to measure TNF- and cICAM-1 level. After 4 hours of reperfusion, the lung tissue was biopsied to assess cICAM-1 expression, and to measure tissue malondialdehyde(MDA) and ATP level. Result: The parameters including arterial oxygen partial pressure, pulmonary vascular resistance and tissue MDA and ATP level suggested severe lung damage. Serum TNF-$\alpha$ level was 8.76$\pm$2.37 ng/ml at 60 minutes after reperfusion and decreased thereafter. The cICAM-1 level showed no change after the reperfusion during the experiment. The tissue cICAM-1 expression was confirmed in 5 dogs. Conclusion: The increase of TNF-$\alpha$ Ievel and expression of tissue ICAM-1 were demonstrated after ischemia reperfusion injury in canine lung model.

• Clinical and Experimental Pediatrics
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• v.51 no.7
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• pp.736-741
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• 2008

Purpose : The incidence of thromboembolic episodes in children with nephrotic syndrome (NS) is low; however, these episodes are often severe. Moreover, both pulmonary thromboembolism (PTE) and renal vein thrombosis (RVT) rarely show clinical symptoms. This study was performed to determine the benefits of routine screening in the detection of thrombosis in childhood NS. Methods : Among 62 children with nephrotic syndrome, a total of 54 children (43 males, 11 females) were included in this study. When the patients experienced their first NS episode, we performed renal Doppler ultrasonography in order to detect RVT. To rule out the possibility of PTE, a lung perfusion scan was performed. Computed tomographic (CT) pulmonary angiography was recommended to patients who showed possible signs of PTE. All patients were evaluated for clinical signs of thrombosis, biochemical indicators of renal disease, as well as clotting and thrombotic parameters. Results : RVT or related clinical symptoms were not observed in any children. Based on the findings of the lung perfusion scans, 15 patients (27.8%) were observed with as a high probability of PTE. We were able to perform a CT pulmonary angiography only on 12 patients, and 5 patients were diagnosed with PTE (prevalence 8.1%). The serum fibrinogen level in the group with PTE was significantly higher ($776.7{\pm}382.4mg/dL$, P<0.05) than that in the group without PTE, and other parameters were not significantly different between each group. Conclusion : Further studies are required for clarifying the role of renal Doppler ultrasonography for the detection of RVT in NS. Children with NS who developed non-specific respiratory symptoms should be evaluated for the diagnosis of PTE. In the management of NS, a lung perfusion scan should be performed at the time of the initial episode of NS regardless of the pulmonary symptoms, since patients having PTE are either often asymptomatic, or present with nonspecific symptoms.

• Tuberculosis and Respiratory Diseases
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• v.42 no.6
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• pp.913-922
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• 1995

Background: When we define the pressure of pulmonary vasculature in which a recruitment of blood flow occurs as $P_I$ and the proportion of change in pulmonary artery to that in cardiac output as IR and then we compare PI and IR with pulmonary vascular resistance, we would find some problems in pulmonary vascular resistance. In other words, it is the theory that, IR should be increased mainly in pulmonary embolism in which decreases the cross sectional area of pulmonary vasculature. But there are many contradictory reports resulted from various researches and the fact is known widely that any difference exists between PVR and PI, IR. For this reason, the purpose of this study is to observe how PI and IR change at the time of the outbreak and during treatment of the pulmonary embolism, and to find out the meaning of these new indicators and the difference from the pulmonary vascular resistance used generally when we subdivide the pulmonary vascular resistance into PI and IR. Method: After making AV fistula in experimental dog, we controlled cardiac output at the intervals of 15 minute in case of three kinds(all AV fistula are obstructed, only one of fistula is open and all of fistula is open), and after evoking massive pulmonary embolism with radioactive autologous blood clots, we measured the mean pulmonary artery pressure, and calculated PI and IR. We observed the pattern of change in PI and IR, without giving the control group any specific treatment and with injecting intravenously rtPA in the Group 1 and Group 2 at the dose of 1mg per kg, for 15 minutes fot the former and 3 hours for the latter. Result: 1) Pulmonary vascular resistance showed a change similar to that of pulmonary artery pressure and in all three group, PVR increased significantly, but group 1 and group 2 showed tendency that PVR keeps on decreasing after treatment, and the rate of decrease in group 1 is more rapid than group 2 significantly. 2) Both intersection(PI) and degree(IR) are proved statistically significant, in view of the straight line relationship between cardiac output and pulmonary artery pressure, calculated by minimal regression method. 3) PI changed similarly to pulmonary vascular resistance, while in the IR which is theoretically more similar to PVR, there was no significant difference or change after rtPA infusion. Conclusion: In the pulmonary embolism, Both change in IR which means real resistance of pulmonary vasculature and PI which was developed due to secondary vasoconstriction by pulmonary embolism are reflected same time.

• Korean Journal of Head & Neck Oncology
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• v.32 no.2
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• pp.23-27
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• 2016

비인강암은 비인강상피에 발생한 암으로 경부전이 및 간, 폐, 뼈 등의 원격전이가 흔히 나타난다. 본 증례에서는 제 4기 병기를 가진 비인강암환자에서 항암 화학요법 및 방사선 치료 후 매우 드물게 후경부 및 액와 림프절 전이를 보인 환자를 보고하는 바이다. 진행된 병기를 보이는 비인강암 환자는 방사선 치료 후 피부전이가 종종 나타나는 현상이나 후경부 림프절 전이는 흔치 않다. 특히 액와 림프절 전이는 비인강암에서 거의 전이를 보이지 않으나 본 증례에서는 매우 드물게 액와 림프절 전이를 보여 보고하는 바이다.

• Journal of Chest Surgery
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• v.40 no.9
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• pp.617-623
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• 2007

Background: Invasive pulmonary aspergillosis, a frequent fungal infection in immunocompromised patients, is known to have a poor prognosis despite the use of antifungal therapy in leukemic patients. We studied the outcome of surgical resection of invasive pulmonary aspergillosis where bleeding tendency, localized recurrence of infection, and incidence could be reduced. Material and Method: We retrospectively reviewed 14 patients with a hematological malignancy where invasive pulmonary aspergillosis was diagnosed during the 10 years between 1998 and 2007. From the medical records, we reviewed the type and treatment of the hematological malignancy, including the diagnostic methods of invasive pulmonary aspergillosis, the preoperative hematological conditions and their management, and the surgical methods and records. We also analyzed the development of postoperative complications and patient mortality, the recurrence of postoperative invasive pulmonary aspergillosis, and if the patients had a bone marrow transplant. Result: Fourteen patients with invasive pulmonary aspergillosis and a hematological malignancy underwent a pulmonary lobectomy. One patient had a complication of bronchopleural fistula, but there were no other serious complications such as bleeding or wound infection, and none of the patients died postoperatively. Conclusion: We have shown that pulmonary lobectomy is a safe and effective therapy for invasive pulmonary aspergillosis in patients with hematological malignancies that allow further treatment of the hematological malignancy.