http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
활동성 결핵의 중증도 및 병변 부위에 따른 전혈 인터페론 감마 분비능 측정의 민감도
김이영 ( Yi Young Kim ),이재희 ( Jae Hee Lee ),이윤지 ( Yoon Jee Lee ),이소연 ( So Yeon Lee ),이용훈 ( Yong Hun Lee ),최금주 ( Keum Ju Choi ),황보엽 ( Bo Yup Hwang ),차승익 ( Seung Ick Cha ),박재용 ( Jae Yong Park ),정태훈 ( Tae H 대한결핵 및 호흡기학회 2011 Tuberculosis and Respiratory Diseases Vol.70 No.2
Background: The clinical manifestation of M. tuberculosis infection ranges from asymptomatic latent infection, to focal forms with minimal symptoms and low bacterial burdens, and finally to advanced tuberculosis (TB) with severe symptoms and high bacillary loads. We investigated the diagnostic sensitivity of the whole-blood interferon-y release assay according to the wide spectrum of clinical phenotypes. Methods: In patients diagnosed with active TB that underwent QuantiFERON(R) (QFT) testing, the QFT results were compared with patients known to be infected with pulmonary tuberculosis (P-TB) and extra-pulmonary TB (EP-TB). In addition, the results of the QFT test were further analyzed according to the radiographic extent of disease in patients with P-TB and the location of disease in patients with EP-TB. Results: There were no statistical differences in the overall distribution of QFT results between 177 patients with P-TB and 84 patients with EP-TB; the positive results of QFT test in patients with P-TB and EP-TB were 70.1% and 64.3%, respectively. Among patients with P-TB, patients with mild extents of disease showed higher frequency of positive results of QFT test than that of patients with severe form (75.2% vs. 57.1%, respectively; p=0.043) mainly due to an increase of indeterminate results in severe P-TB. Patients with TB pleurisy showed lower sensitivity by the QFT test than those with tuberculous lymphadenitis (48.8% vs. 78.8%, respectively; p=0.019). Conclusion: Although QFT test showed similar results between overall patients with P-TB and EP-TB, individual sensitivity was different according to the radiographic extent of disease in P-TB and the location of disease in EP-TB.
박석주(Sok-Chu Park),이금주(Geum-Joo Yi),박경일(Kyung-Il Park) 한국항해항만학회 2016 한국항해항만학회지 Vol.40 No.6
부유체의 횡동요는 승조원의 피로를 누적시키고, 심지어 구조물 전체를 전복시키기 까지 하고, 또 선체에 반복적인 외력을 가하는등 부유체의 안정성과 구조물의 안전에 심대한 영향을 끼친다. 그래서 거의 모든 선박의 경우에는 빌지킬을 설치하여 횡동요를 감소시키고 있고, 특수한 경우에는 안티롤링 탱크나 핀 스태빌라이저나 자이로스코프 등을 설치하여 횡동요를 줄이고 있다. 그러나 안티롤링 탱크는 설치하는데 용적을 많이 차지하고, 핀 스태빌라이저나 자이로스코프는 설치비와 유지 관리비가 많이 든다. 본 연구에서는 안티롤링 진자를 이용하여 부유체의 횡동요를 줄이고자 한다. 보통 단진자라고 하면 질량체를 끈으로 어디엔가 고정시켜 놓고 자유롭게 흔들리는 구조를 말한다. 여기에서는 통상의 진자 대신에 진자를 원궤도에 올려놓아서 단진동 운동을 하도록 하는 원리를 이용한다. 제안한 장치를 실험선에 적용하여 그 효능을 입증하였다. 안티롤링 탱크의 약 1/8의 중량과 약 1/6의 용적을 가진 안티롤링 진자를 이용하여 이것보다 더 좋은 효과를 낼 수 있음을 확인 하였다. 여기에 더하여 선체에 안티롤링 진자를 부가한 모델의 선형운동방정식과 비선형 운동방정식을 제시하였다. A ship’s rolling motion can make crew and passengers sick and/or apply forces to the structure that cause damage.. Therefore bilge keels are equipped in most ships for anti-rolling. In special cases, anti-rolling tanks (ARTs), fin stabilizers, or gyroscopes can be installed. However, ARTs require a large area to install, and fin stabilizers and gyroscopes are costly to install and expensive to operate. This paper suggests a Anti-rolling pendulum (ARP) to reduce roll motion. ARPs acts like ARTs. However, the ARP has a circular shaped guidance arc instead of the string or wire of a simple pendulum. The device suggested has about 1/8 the weight and 1/6 the volume of a ART and is more effective. This study derives the nonlinear and linear differential equations of system motion.
박석주(Park Sok Chu),제해광(Je Hae Kwang),이금주(Yi Geum Joo) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
There are many attentions on the traditional cultural contents in Korea recently. The new recognition on the Korean music is the one of them. But there is few scientific analysis on the Korean musical instruments. This paper treats on the sound radiation of the Haegeum. The structural characteristic of making sounds of the haegeum is similar to that of the billion. But the sound height of the billion is nearly determined by the position of the finger, that of the haegeum is affected by the tension of the string also. This paper shows the sound radiation characteristics of the haegeum..
박석주(Park S. C),제해광(Je H. K),이금주(Yi G. J),박영범(Park Y. B),박경일(Park K. I) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
A method for the identification of structural characteristic parameters of a steel bar in the matrices form such as stiffness matrices and mass matrices from frequency response function(FRF) by genetic algorithm is proposed. As the method is based on the finite element method(FEM), the obtained matrices have perfect physical meanings if the FRFs got from the analysis and the FRFs from the experiments were well coincident each other. The identified characteristic matrices from the FRFs with maximun 40% of random errors by the genetic algorithm are coincident with the characteristic matrices from exact FEM FRFs well each other.
만성폐쇄성폐질환에 폐렴과 급성악화로 입원한 환자의 임상적 특성 및 예후 비교
정승욱 ( Seung Wook Jeong ),이재희 ( Jae Hee Lee ),최금주 ( Keum Ju Choi ),황보엽 ( Bo Yup Hwang ),김이영 ( Yi Young Kim ),이윤지 ( Yun Ji Lee ),윤원경 ( Won Kyung Yoon ),김민 ( Min Kim ),차승익 ( Sung Ick Cha ),박재용 ( Jae Yong 대한결핵 및 호흡기학회 2010 Tuberculosis and Respiratory Diseases Vol.69 No.1
Background: Data comparing the clinical characteristics and outcomes in chronic obstructive pulmonary disease (COPD) patients hospitalized with community-acquired pneumonia (CAP-COPD) and acute exacerbation (AE-COPD) are very limited. Methods: Eighty episodes of hospitalization in 65 CAP-COPD patients, and 111 episodes of hospitalization in 82 AE-COPD patients were included in this study. The baseline characteristics, clinical presentations, potential bacterial pathogens and clinical outcomes in these patients were retrospectively reviewed and compared. Results: No significant differences were found between the two groups in parameters related to COPD and co-morbidities, except a higher rate of male among CAP-COPD patients. Clinical presentations by symptoms and laboratory findings on admission were significantly more severe in CAP-COPD patients, who showed higher rates of fever and crepitation, but less wheezing than AE-COPD patients. S. pneumoniae and P. aeruginosae were the most common bacterial pathogens in both groups. With no difference in the overall hospital mortality between both groups, the mean length of hospital stay was significantly longer in the CAP-COPD patients than in AE-COPD patients (15.3 vs. 9.8 days, respectively, p<0.01). Additional analysis on CAP-COPD patients showed that systemic steroid use did not influence the length of hospital stay. Conclusion: Although there was no significant difference in bacterial pathogens and overall hospital mortality between the two groups, CAP-COPD patients had more severe clinical symptoms and laboratory findings at presentation, and longer hospital stay than AE-COPD patients.
박석주(Park, S.C.),제해광(Je, H.K.),이금주(Yi, G.J.),박영범(Park, Y.B.),박경일(Park, K.I.) 한국소음진동공학회 2010 한국소음진동공학회 논문집 Vol.20 No.10
A method for the identification of structural characteristic parameters of a steel bar in the matrices form such as stiffness matrices and mass matrices from frequency response function(FRF) by genetic algorithm is proposed. As the method is based on the finite element method(FEM), the obtained matrices have perfect physical meanings if the FRFs got from the analysis and the FRFs from the experiments were well coincident each other. The identified characteristic matrices from the FRFs with maximun 40 % of random errors by the genetic algorithm are coincident with the characteristic matrices from exact FEM FRFs well each other. The fitted element diameters by using only 2 points experimental FRFs are similar to the actual diameters of the bar. The fitted FRFs are good accordance with the experimental FRFs on the graphs. FRFs of the rest 9 points not used for calculating could be fitted even well.
호흡기 ; 의료시설폐렴의 임상적 및 세균학적 특성 의료시설폐렴의 임상적 및 세균학적 특성
윤원경 ( Won Kyung Yoon ),김민 ( Min Kim ),김이영 ( Yi Young Kim ),이윤지 ( Yun Ji Lee ),황보엽 ( Yup Hwang Bo ),최금주 ( Keum Ju Choi ),황준현 ( Jun Hyun Hwang ),정승욱 ( Seung Wook Jung ),유승수 ( Seung Soo Yoo ),이신엽 ( Shin 대한내과학회 2010 대한내과학회지 Vol.78 No.6
Background/Aims: Healthcare-associated pneumonia (HCAP) occurs outside hospitals, but its characteristics are similar to those of hospital-acquired pneumonia (HAP). We evaluated the clinical and microbial characteristics of HCAP in Korea. Methods: Of 130 subjects with suspected pneumonia, 49 were classified as HCAP and 81 as HAP. We retrospectively examined the clinical presentations, outcomes, pathogens, and drug resistance rates of Pseudomonas aeruginosae in both groups. Results: The clinical presentations, including the symptoms and laboratory findings, at the time of hospitalization were comparable in both groups. The hospital mortalities of HCAP (28.6%) and HAP (34.6%) did not differ significantly; the length of the hospital stay was similar for all of the survivors (14 vs. 17 days, respectively). Of the identified pathogens, methicillin-resistant Staphylococcus aureus was significantly less common in HCAP than in HAP (two vs. 18 cases, respectively, p<0.01), whereas Klebsiella pneumoniae was more common in HCAP (five vs. zero cases, respectively, p<0.01). The frequency of other Gram-negative rods was similar in both groups. The rate of resistance to antibiotics in P. aeruginosae in both groups was substantial, with the highest resistant rate to ciprofloxacin (50% and 61.5% in HCAP and HAP, respectively). Conclusions: Although the clinical features and outcomes of HCAP were comparable to those of HAP in the study population, the frequency of methicillin-resistant S. aureus was significantly lower in HCAP compared to HAP. (Korean J Med 78:709-716, 2010)