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소규모 오수발생지역의 고도처리시설을 위한 상.하 흐름형 인공습지 개발
김형중,윤춘경,권태영,정광욱,Kim, Hyung-Joong,Yoon, Chun-G.,Kwun, Tae-Young,Jung, Kwang-Wook 한국농공학회 2006 한국농공학회논문집 Vol.48 No.6
The feasibility of the up- and down-flow constructed wetland was examined fur rural wastewater treatment in Korea. Many constructed wetland process was suffered from substrate clogging and high plant stresses because of long term operation. The up- and down-flow constructed wetland process used porous granule materials (charcoal pumice : SSR=10:20:70) for promoting intake rate of nutrient to plant, and especially flow type was designed continuously repeating from up-flow to down-flow. $BOD_5$ and SS was removed effectively by the process with the average removal rate being about 75% respectively. The wetland process was effective in treating nutrient as well as organic pollutant. Removal of TN and TP were more effective than other wetland system and mean effluent concentrations were approximately 7.5 and $0.4mg\;L^{-1}$ which satisfied the water quality standard for WWTPs. The treatment system did not experience any clogging or accumulations of pollutants and reduction of treatment efficiency during winter period because constructed polycarbonate glass structure prevented temperature drop. Considering stable performance and effective removal of pollutant in wastewater, low maintenance, and cost-effectiveness, the up- and down-flow constructed wetland was thought to be an effective and feasible alternative in rural area.
상기도 폐쇄 환자에서 내시경적 CO2 레이저 치험 1 예
김형중(Hyung Jung Kim),안철민(Chul Min Ahn),김성규(Sung Kyu Kim),이원영(Won Young Lee),김광문(Kwang Moon Kim),이영석(Young Seok Lee) 대한내과학회 1989 대한내과학회지 Vol.36 No.4
N/A The carbon dioxide (CO2,) laser was first described by Polanyi in 1970. Lafort et al, in a case report, demonstrated the effectiveness of treating an obstructing lesion of the trachea with a carbon dioxide laser. The principal role of laser photoresection in pulmonary medicine is, and will probably remain, in the treatment of malignant or benign lesions that cause breathlessness by obstruction of the trachea and mainstem bronchus or lesions that cause recurrent hemoptysis. We applied bronchoscopic laser photoresecrion to the tracheal lesion in a breathless patient who had suffered from tracheobronchial tuberculosis with pulmonary tuberculosis. After laser photoresection, marked improvement of the symptoms and pulmonary function test parameters was noted.
급성 폐손상 환자에서 혈중 Plasminogen Activator Inhibitor 와 Factor 8 측정의 의의
김형중(Hyung Jung Kim),안철민(Chul Min Ahn),이광재(Kwang Jae Lee),김성규(Sung Kyu Kim),이원영(Won Young Lee),송경순(Kyung Soon Song) 대한내과학회 1991 대한내과학회지 Vol.41 No.6
N/A Acute lung injury is characterized by diffuse pulmonary microvascular injury and increased endothelial permeability. However its precise pathogenesis is unclear. Plasma proteins such as plasminogen activator inhibitor and Factor VIII, that are produced or released by injured endothelial cells, and activated platelets might be altered, so intravascular coagulation (platelet-microthrombi) and impaired fibrinolysis contribute to the development of acute lung injury. We measured PAI-1 and Factor VIII in 9 patients with adult respiratory distress syndrome (ARDS), 6 patients with chronic lung disease with acute respiratory failure (CLD with ARF), 17 patients with sepsis or pneumonia, S patients with chronic lung disease, and 12 healthy volunteers. The results were as follows: 1) Plasma PAI-1 levels in patients with ARDS and CLD with ARF were significantly higher than those in patients with sepsis or pneumonia and chronic lung disease (p<0.01). 2) Plasma VIII:vWF levels in patients with ARDS and CLD with ARF were significantly higher than those in patients with sepsis or pneumonia and chronic lung disease (p < 0, 01). 3) Plasma VIII: C levels in patients with ARDS and CLD with ARF were not significantly higher than those in patients with sepsis or pneumonia and chronic lung disease. 4) Plasma PAI-1 showed a significant positive correlation with plasma VIII:vWF (r=0.69, p<0.001). In conclusion, plasma PAI-1 and VIII: vWF were useful markers of acute lung injury such as adult respiratory distress syndrome and acute hypoxemic respiratory failure in patients with chronic lung disease.
김형중(Hyung Jung Kim),김은숙(Eun Sook Kim),안철민(Chul Min Ahn),김성규(Sung Kyu Kim),이원영(Won Young Lee),송경순(Kyung Soon Song),박광주(Kwang Jo Park) 대한내과학회 1998 대한내과학회지 Vol.54 No.4
N/A Objectives: It is well known that malignant diseases exhibit an increased propensity to clotting and fibrinolytic aberrations and early detection of these hemostatic alterations is very important for the rapid institution of appropriate treatment of thromboembolic and hemorrhagic complications in patients with malignant disease. The incidence of these abnormalities in lung cancer was reported from 20% up to 95% according to various investigators using different hemostatic parameters. We measured the concentrations of plasma thrombin-antithrombin III complex(TAT) and plasmin-a2-plasmin inhibitor complex(PIC), which are newly developed sensitive molecular markers of coagulation and fibrinolysis system respectively in patients with lung cancer and determined the degree of these hemostatic abnormalities according to the histologic types and different clinical stages in patients with lung cancer. Methods: We measured the concentrations of plasma TAT and PIC in 62 patients with histologically corned lung cancer, and we determined stage radiologically in non-surgical patients and pathologically in surgical patients. The plasma TAT and PIC levels were assayed using a solid phase enzyme immunoassay with Enzygnost-TAT kit(Behringwerke, Marburg, Germany) and Enzygnost-PAP kit(Behringwerke, Marburg, Germany), respectively. Results ' The concentrations of plasma TAT(6.8±4.8 ng/mL) and PIC(644.3±330.5 ng/mL) in patients with lung cancer were significantly increased compared to those of plasma TAT(2.8±1.2 ng/mL) and PIC(240.4±69.7 ng/mL) in control subjects(p<0.05), The concentrations of plasma TAT and PIC in patients with lung cancer were not different according to histologic types, clinical stage and distant metastasis. There was no correlations between TAT and PIC(r=0.11, p > 0.05). Conclusions: There was a subclinical activation of coagulation and fibrinolysis system in patients with lung cancer although they don't have overt clinical evidences of thromboembolism or hemorrhage. Rut there were no different activation of coagulation and fibrinolysis system according to histologic types and clinical stages.