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WASP5 수질모형을 이용한 대청호 부영양화 인자의 특성 연구
유병로 ( Ryu Byong-ro ),조성근 ( Cho Sung-gun ),김훈 ( Kim Hoon ) 한국환경기술학회 2001 한국환경기술학회지 Vol.2 No.3
WASP5 모형을 대청호에 적용하여 모형의 변수를 보정하고 모의 결과에 영향을 주는 각 파라미터의 민감도를 분석하여 대청호 부영양화 인자의 특성을 파악하였다. 대청호 상류지역인 장계교지점에서 대청댐에 이르는 대청호 본류구간을 대상으로 연구를 수행하였다. 민감도 분석 결과 매우 민감한 것은 TEMP1과 K1C이며, 다음으로 민감한 것은 CCHL, IS1, KMPG1, PCRB, ITOT이며, 민감하지 않은 것은 K1RC, K1D, K83C와 경계변수인 PO<sub>4</sub>, O-P, Chl-a이다. 또한 영향이 없는 것은 KPZDC, KOPDC와 경계변구인 NO<sub>3</sub>-N로 나타났다. TEMP1의 민감도 변화는 수심이 낮은 대전취수탑에서 변화폭이 매우 높게 나타내고 있어 수온의 변화가 수심과 연관성이 있는 것으로 판단되며, 모어와 PO<sub>4</sub>-P, NO<sub>3</sub>-N를 변화시켰을 경우보다 TEMP1을 변화시켰을 경우 Chl-a의 민감도 변화폭이 크므로 영양염류에 대한 영향보다는 수온에 대한 영향이 더 큰 것으로 판단된다. 또한 Chl-a와 T-P는 모두 수온에 대한 민감도가 크므로 수온에 대한 영향이 큰 것으로 판단된다. This study is performed to examine characteristic of the eutrophication factors and its sensitivity using WASP5 model. The highest sensitivity appeared factors of K1C(saturated growth rate of phytoplankton) and TEMP1(water temperature), which was low depth of water at Daejon intake tower. The secondary sensitivity was appeared factors such as CCHL (carbon- to -chlorophyll ratio), IS1 (saturation light intensity for phytoplankton), KMPG1(phosphorous half-saturation constant for phytoplankton growth), PCRB(phosphorous-to-carbon ratio in phytoplankton) and ITOT(total daily solar radiation). The third sensitivity was appeared factors such as K1RC(Endogenous respiration rate of phytoplankton), K1D(Non-predatory phytoplankton death rate), K83C(Mineralization rate of dissolved organic phosphorus), PO<sub>4</sub>-P, O-P, and Chl-a. The KPZDC(Decomposition rate constant for phytoplankton in the sediment at 20°C) and the KOPDC(Decomposition rate of organic phosphorus in the sediment at 20°C) have no effect on the sensitivity.
비소세포폐암 수술 후 세포분화도가 재발에 영향을 미친다
강형구 ( Hyung Koo Kang ),조성근 ( Sung Gun Cho ),이혜민 ( Hye Min Lee ),박성운 ( Sung Woon Park ),이병욱 ( Byung Ook Lee ),이재희 ( Jae Hee Lee ),김보민 ( Bo Min Kim ),박인원 ( In Won Park ) 대한결핵 및 호흡기학회 2010 Tuberculosis and Respiratory Diseases Vol.68 No.1
Background: Lung cancer is the most common cause of cancer mortality in Korea. The TNM stage at presentation in patients with non-small cell lung cancer (NSCLC) has the greatest impact on prognosis. Patients who undergo a complete resection for NSCLC are likely to develop recurrent and/or metastatic disease. There are several factors influencing the development of recurrence. We explored risk factors of recurrence in patients with stages I and II NSCLC, who had undergone curative resection. Methods: We reviewed patients who had complete surgical resection as definitive treatment for stage I or II. Patients followed up for more than 36 months. We evaluated several factors which might have relationship with recurrence, such as patient`s demographic factors, TNM staging, pathologic finding, tumor markers and surgical technique. Results: A total of 75 patients were enrolled for analysis, of whom 58 were men and 17 were women with mean age of 61 (range, 37 to 76) years. The average size of tumors was 3.9 cm (0.7 to 10 cm). There were 64 patients with stage I NSCLC and 11 with stage II NSCLC. Among 64 patients with stage I NSCLC, 35 patients showed recurrences whereas 8 patients have recurred in stage II NSCLC. Grade of differentiation of tumor was closely related to the recurrence. Seventy-five percent of patients who had poor tumor differentiation experienced a recurrence. In contrast, 3 patients of twelve had recurrences, who revealed differentiation in their tissue (p<0.05). Conclusion: Tumor differentiation could be a predictive factor for tumor recurrence in patients who have undergone curative resection for stage I or II NSCLC.
폐외 결핵에서 전혈 인터페론 감마 측정법의 진단적 유용성
이혜민 ( Hye Min Lee ),조성근 ( Sung Gun Cho ),강형구 ( Hyung Koo Kang ),박성운 ( Sung Woon Park ),이병욱 ( Byung Ook Lee ),이재희 ( Jae Hee Lee ),전은주 ( Eun Ju Jeon ),최재철 ( Jae Chol Choi ) 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.67 No.4
Background: The whole-blood interferon-gamma release assay (QuantiFERON-TB Gold [QFT-G]: Cellestis, Carnegie, Victoria, Australia) has been studied primarily for the use of diagnosing active pulmonary tuberculosis (TB) or latent TB. In the present study, the usefulness of QFT-G was evaluated for the diagnosis of extra-pulmonary tuberculosis (EP-TB). Methods: From June 2006 to February 2009, we evaluated the usefulness of QFT-G in patients (n=65) suspected with EP-TB, retrospectively. The diagnostic sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the QFT-G assay were analyzed. Results: EP-TB was diagnosed in 33 (51%) participants. The overall sensitivity, specificity, PPV, and NPV of the QFT-G assay for EP-TB were 78%, 79%, 81%, and 77%, respectively. Of the 33 with EP-TB, 14 (42%) were diagnosed with TB pleurisy, 7 (21%) with TB lymphadenitis, 7 (21%) with intestinal TB, and 5 (15%) with EP-TB in other sites. In subgroup analyses according by site of infection, the QFT-G showed 86% sensitivity, 64% specificity, and 78% NPV in TB pleurisy. On the other hand, the sensitivity, specificity, and NPV of the assay were 71%, 83% and 71%, respectively in TB lymphadenitis, and 86%, 100% and 88%, respectively in intestinal TB. Among the patients with suspected alternative site EP-TB, the sensitivity, specificity, and NPV of the assay were 50%, 80% and 67%, respectively. Conclusion: The QFT-G assay showed moderate diagnostic accuracy in EP-TB. However, negative QFT-G assay does not exclude EP-TB because of the low NPV of this assay.
만성 하기도 증상을 보이는 환자에서 진균 알레르기 검출을 위한 피부단자시험과 혈청 알레르겐-특이 IgE 검사 결과의 비교 분석
정재우 ( Jae Woo Jung ),전은주 ( Eun Ju Jeon ),이혜민 ( Hye Min Lee ),조성근 ( Sung Gun Cho ),강형구 ( Hyung Koo Kang ),곽희원 ( Hee Won Kwak ),송주한 ( Ju Han Song ),최재철 ( Jae Chol Choi ),신종욱 ( Jong Wook Shin ),김재열 ( Jae 대한천식알레르기학회 2009 천식 및 알레르기 Vol.29 No.1
Background: Skin prick tests (SPTs) has relatively a good correlation with allergen-specific IgE against house dust mites and pollens, whereas their correlation to fungi remains low. Objective: We aimed to investigate the prevalence and correlation between fungus-specific IgE and SPTs in patients with chronic lower respiratory symptoms. The difference between fungus-specific IgE-positive and -negative groups was also examined. Method: A total of 566 patients were included in this study, all of whom had either negative SPT results, positive for one or more fungi, or positive for dusts or mixed threshings. Result: SPTs and allergen-specific IgE tests for fungus were positive in 9.4% and 11.8% of the patients, respectively. The positive concordance rate for fungus-specific IgE with SPTs was 47%. The k statistic for the agreement between SPTs and fungus-specific IgE test was 0.349. In all populations negative for SPTs, total eosinophil counts, total IgE, ECP and bronchial reversibility were higher in the fungus-specific IgE-positive group. In the group that tested only positive for dusts or mixed threshings with SPTs, total IgE and bronchial hyperresponsiveness were higher in the fungus-specific IgE-positive group (P<.05). Conclusion: The rate of successful detection of fungus using SPTs was low compared to a fungus-specific IgE. Thus, fungus-specific IgE may be useful to detect fungus allergies in patients with chronic lower respiratory symptoms. (Korean J Asthma Allergy Clin Immunol 2009;29:33-38)
비소세포폐암주에서 저산소상태에 의해 유발된 HIFa-1α와 VEGF의 발현증가에 미치는 Epigallocatechin-3-gallate의 억제 효과
송주한 ( Joo Han Song ),전은주 ( Eun Joo Jeon ),곽희원 ( Hee Won Kwak ),이혜민 ( Hye Min Lee ),조성근 ( Sung Gun Cho ),강형구 ( Hyung Koo Kang ),박성운 ( Sung Woon Park ),이재희 ( Jae Hee Lee ),이병욱 ( Byung Ook Lee ),정재우 ( Ja 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.66 No.3