http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유기용제 취급근로자들의 요중대사물질과 말초임파구 자매염색분체교환 발현빈도에 관한 조사연구
김돈균,황인경,류철인,이수일,정갑열,이용환,이충렬,현원일,김석봉,전용덕 大韓産業醫學會 1990 대한직업환경의학회지 Vol.2 No.1
저자들은 유기용제 취급여성근로자 90명을 대상으로 1988년 7월부터 1989년 8월까지 말초혈액임파구에서의 자매염색분체교환의 발현빈도를 조사하고 이들의 업종, 근속연수, 요중마뇨산 농도등이 자매염색분체교환의 발현빈도에 미치는 영향을 조사하였으며 그 결과를 요약하면 다음과 같다. 1. 유기용제 취급근로자들의 말초혈액임파구에서의 자매염색분체교환의 발현빈도는 대조군에 비하여 유의하게 증가되었다. 2. 말초혈액임파구에서의 자매염색분체교환의 발현빈도가 가장 높은 업종은 프라스틱제품 제조업이었다. 3. 근속연수가 말초혈액임파구에서의 자매염색분체교환의 발현빈도에 미치는 영향은 현저하지 않았다. 4. 요중마뇨산농도와 말초혈액임파구에서의 자매염색분체교환의 발현빈도간에는 유의한 상관관계가 있었다. In order to know the possibility of utilizing the sister chromatid exchanges as an index which could evaluate the effect of organic solvents on the health in industrial workers, the authors studied the effects of the inductivity of sister chromatid exchanges in peripheral lymphocytes from 90 female workers expoxed to organic solvents and 20 non-exposed female workers. The results obtained were as follows : 1. The frequency of sister chromatid exchanges in peripheral lymphocytes from 90 female workers exposed to organic solvents was significantly increased in comparison with 20 control subject. 2. The frequency of sister chromatid exchanges was significantly increased in the workers who were employed in the manufacture of plastic materials than the other manufactures. 3. There were no significant differences in the frequency of sister chromatid exchanges by carriers of the exposed workers.
둔상성 신외상에서 일차적 방사선 검사법으로서의 전산화단층촬영술의 적정성
박용주,이종복,이재환,견중기 대한외상학회 2001 大韓外傷學會誌 Vol.14 No.1
Purpose: This study aimed to evaluate the costeffectiveness of computerized tomography (CT) as a primary radiographic investigation for patients with blunt renal trauma who meet the criteria for radiographic assessment. Method: From June 1993 to December 2000, all the patients who visited the emergency center due to blunt abdominal trauma with gross or microscopic hematuria except adults presented with microhematuria, no cases of shock were included in this study, and abdominal CT was performed as a routine radiographic study. Renal injuries were classified into 5 grades using the Moore's classification according to the results of CT findings and the efficacy of CT as a primary radiographic investigation was evaluated. Results: A total of 178 patients (34 children and 144 adults) met the criteria of our study. Of the 178 patients, 77 (43.3%), were classified as grade I 37 (20.8%) as grade II, 26 (14.6%) as grade III, 30 (16.9%) as grade IV, and 8 (4.5%) as grade V. Associated intra-abdominal organ injuries were detected in 32 (18%) patients. The rate of major renal injuries (grade Ⅲ-Ⅴ), which were considered to need CT as a radiographic study, was 36%. Thirty-two (18%) patients under-went operative treatment, and the grade between preoperative and intraoperative findings was identical in all patients. Conclusion: The results of this study show that CT should be performed for at least one-third of the patients with blunt renal trauma. When a radiographic study is indicated, we recommend CT as a primary diagnostic investigation instead of IVP.
조리개 위치 변경을 통한 비축 삼반사 망원경 광학계의 성능 및 민감도 개선 연구
이한율,전원균,이상민,김기환,서현주,박승한,정미숙,Lee, Han-Yul,Jun, Won-Kyoun,Lee, Sang-min,Kim, Ki-hwan,Seo, Hyun-Ju,Park, Seung-Han,Jung, Mee-Suk 한국광학회 2021 한국광학회지 Vol.32 No.1
본 논문에서는 인공위성용 비축 삼반사 망원경의 조리개 위치에 따른 광학계 연구를 진행하였다. 인공위성 광학 탑재체로 주로 사용되는 비축 삼반사 망원경은 높은 해상도와 넓은 화각을 가져야 한다. 또한, 광학계가 구조적으로 비축상에 위치하여 조립이 어려우므로 넓은 공차범위를 가져야 한다. 그러나 조리개의 위치 선정에 따라 광학계의 성능 차이 이외에도 민감도의 차이가 있어, 사용 목적에 따른 적합한 조리개의 위치 선정이 중요하다. 따라서 본 논문에서는 조리개 위치가 각각 다른 비축 삼반사 망원경을 설계하고 성능 및 민감도 분석을 진행하여 적합한 조리개의 위치를 제시하였다. In this paper we have studied an optical system according to the aperture position of an off-axis TMA telescope for satellites. An off-axis TMA telescope should have high resolution and wide field of view (FOV). In addition, the optical system should have a wide tolerance range, because it is structurally located off-axis and is difficult to assemble. However, there are differences in performance and sensitivity according to the aperture-stop position, so it is important to select a suitable aperture-stop position. Therefore, in this paper we have designed each off-axis TMA telescope according to the aperture-stop position, and have analyzed the performance and sensitivity to suggest a suitable aperture-stop position.
신종인플루엔자 폐렴환자에서 임상적 악화와 연관된 초기 전산화 단층촬영 소견
유승목 ( Seung Mok Ryoo ),김원영 ( Won Young Kim ),이충욱 ( Choong Wook Lee ),손창환 ( Chang Hwan Sohn ),서동우 ( Dong Woo Seo ),이윤선 ( Yoon Seon Lee ),이재호 ( Jae ho Lee ),오범진 ( Bum Jin Oh ),김원 ( Won Kim ),임경수 ( Kyoun 대한결핵 및 호흡기학회 2010 Tuberculosis and Respiratory Diseases Vol.69 No.2
Background: The aim of the present study was to evaluate whether findings on initial chest computed tomography (CT) of influenza pneumonia can help predict clinical outcome. Methods: We reviewed all adult patients admitted to the Emergency Department (ED) with a confirmed diagnosis of novel influenza A H1N1 virus (2009 H1N1) pneumonia, who underwent chest CT upon admission between Aug 26, 2009 and Jan 31, 2010. Radiologic findings were characterized by type and pattern of opacities and zonal distribution. Clinical outcome measures were intensive care unit (ICU) admission, mechanical ventilation, and inhospital death. Results: Of 59 patients diagnosed with 2009 H1N1 pneumonia, 41 (69.5%) underwent chest CT on admission into ED. Nine (22%) of these patients developed adverse clinical outcomes requiring the following treatments: 9 (22.0%) ICU admissions, 5 (12.2%) mechanical ventilation, and 3 (7.3%) inhospital deaths. Counting the number of patients with more than 4 involved lobes, the sensitivity, specificity, positive predictive value, and negative predictive value for detection of adverse clinical outcome were 67%, 84%, 55% and 80%, respectively. Conclusion: Extensive involvement of both lungs (over 4 lobes) is related to ICU admission, mechanical ventilation, and inhospital death. Initial chest CT may help predict an adverse clinical outcome of patients with 2009 H1N1 influenza pneumonia.