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유수진(Soo-Jin Yoo),권윤경(Yun-Gyeong Gwon),배수현(Soo-Hyeon Bae),이한별(Han-Byeol Lee),이정훈(Jung-Hun Lee),장효정(Hyo-Jung Jang),김동현(Dong-Hyun Kim) 호서대학교 공업기술연구소 2023 공업기술연구 논문집 Vol.42 No.1
본 연구에서는 폐마스크의 열분해 과정에서 발생하는 유해화학물질을 측정 및 분석하기 위해 2022년 3월 20일부터 2022년 10월 31일 까지 마스크 제조사 6종을 선정하여 GC를 이용하여 분석하였다. 덴탈 마스크 3종에서 총 10종의 화학물질이 검출됐다. 열분해시 발생되는 물질을 살펴보면 비말차단용 마스크(KF-AD) 분석결과 TCE 13,840ppm, 1,1,1-TCE 4,700~61,170ppm, MIBK 5,570~28,420ppm, Cyclohexanone 420~4750ppm, m-Xylene 16,250ppm, p-Xylene 99,450ppm, Acetone 47,790ppm, Methyl acetate 6,350ppm, n-propyl acetate 77,780ppm, EB 35,480ppm 이었다. KF-94 마스크 3종에서는 총 10종의 화학물질이 검출됐다. KF-94 마스크의 열분해 시 발생되는 물질 분석결과 TCE 23,940ppm, MIBK 4,630~42,800ppm, Cyclohexanone 6,780~8,860ppm, o-Xylene 17,000ppm, m-Xylene 28,730ppm, p-Xylene 17,220ppm, Acetone 29,410~51,940ppm, Methyl acetate 5,230~6,430ppm, n-propyl acetate 107,390ppm, EB 32,570~53,590ppm 검출되었다. 폐마스크의 열분해 과정에서 발생하는 물질을 분석한 결과, 인체에 유해한 영향을 미칠 수 있는 유해화학물질이 포함되어 있는 것을 확인하였다. In this study, six types of masks were selected from mask manufacturers and analyzed using GC to measure and analyze hazardous chemicals generated during the thermal decomposition process of respirators. A total of 10 types of chemicals were detected in three types of dental masks. Upon examining the substances generated during thermal decomposition, the results of the dental mask analysis were TCE 13,840 ppm, 1,1,1-TCE 4,700-61,170 ppm, MIBK 5,570-28,420 ppm, Cyclohexanone 420-4,750 ppm, m-Xylene 16,250 ppm, p-Xylene 99,450 ppm, Acetone 47,790 ppm, Methyl acetate 6,350 ppm, n-propyl acetate 77,780 ppm, and EB 35,480 ppm. A total of 10 types of chemicals were detected in three types of KF-94 masks. Results fromthe analysis of substances generated during the thermal decomposition of KF-94 masks showed TCE 23,940 ppm, MIBK 4,630-42,800 ppm, Cyclohexanone 6,780-8,860 ppm, o-Xylene 17,000 ppm, m-Xylene 28,730 ppm, p-Xylene 17,220 ppm, Acetone 29,410-51,940 ppm, Methyl acetate 5,230-6,430 ppm, n-propyl acetate 107,390 ppm, and EB 32,570-53,590 ppm. The results of the analysis of the substances generated during thermal decomposition of respirators revealed that they contained hazardous chemicals that could have harmful effects on the human body.
소아 마이코플라스마 폐렴의 다양한 임상 양상에 연관된 요인들
김유나 ( Yoo Na Kim ),박철휘 ( Chul Hyue Park ),김수희 ( Su Hee Kim ),유수진 ( Soo Jin Yoo ),김효빈 ( Hyo Bin Kim ) 대한천식알레르기학회 2013 Allergy Asthma & Respiratory Disease Vol.1 No.4
Purpose: Mycoplasma pneumonia (MP) is a major cause of community-acquired pneumonia in children and young adults. We aimed to investigate the factors that may influence on the clinical manifestations of MP in children. Methods: A total of 109 admitted children from October 2011 to February 2012 were prospectively enrolled with physical examination and laboratory tests (complete blood count, C-reactive protein [CRP], and particle agglutinin assay). The diagnosis of MP was made when there was an infiltration on the chest X-ray and the particle agglutination test was once over 1:640 or showed 4-fold increase in serial tests. They were grouped by age, fever duration after treatment, presence of pleural effusion and wheezing. Results: Preschool children showed shorter duration of fever (P=0.001), more wheezing (P<0.001), lower segmented neutrophil (P<0.001), and lower CRP levels (P=0.004) compared to schoolchildren. Prolonged fever (>3 days) and pleural effusion were developed in children with higher CRP (P=0.018 and P=0.007). Wheezing has been developed in children with younger age (P=0.007). Conclusion: Younger age was a risk factor to develop wheezing in MP and prolonged fever and pleural effusion were more likely to develop in children with higher CRP.
소아 마이코플라스마 폐렴의 다양한 임상 양상에 연관된 요인들
김유나 ( Yoo Na Kim ),박철휘 ( Chul Hyue Park ),김수희 ( Su Hee Kim ),유수진 ( Soo Jin Yoo ),김효빈 ( Hyo Bin Kim ) 대한소아알레르기호흡기학회 1991 소아알레르기 및 호흡기학회지 Vol.1 No.4
Purpose: Mycoplasma pneumonia (MP) is a major cause of community-acquired pneumonia in children and young adults. We aimed to investigate the factors that may influence on the clinical manifestations of MP in children. Methods: A total of 109 admitted children from October 2011 to February 2012 were prospectively enrolled with physical examination and laboratory tests (complete blood count, C-reactive protein [CRP], and particle agglutinin assay). The diagnosis of MP was made when there was an infiltration on the chest X-ray and the particle agglutination test was once over 1:640 or showed 4-fold increase in serial tests. They were grouped by age, fever duration after treatment, presence of pleural effusion and wheezing. Results: Preschool children showed shorter duration of fever (P=0.001), more wheezing (P<0.001), lower segmented neutrophil (P<0.001), and lower CRP levels (P=0.004) compared to schoolchildren. Prolonged fever (>3 days) and pleural effusion were developed in children with higher CRP (P=0.018 and P=0.007). Wheezing has been developed in children with younger age (P=0.007). Conclusion: Younger age was a risk factor to develop wheezing in MP and prolonged fever and pleural effusion were more likely to develop in children with higher CRP. (Allergy Asthma Respir Dis 2013;1:357-361)
Escherichia coli O114에 의한 용혈성 요독 증후군 2례
류수정,한혜원,유수진,이병선,이재규,김미나,김의종,박영서,Ryu Su-Jeung,Hahn Hyewon,Yoo Soo Jin,Lee Byung-Sun,Lee Jae Kyoo,Kim Mi-Na,Kim Eui Chong,Park Young Seo 대한소아신장학회 2002 Childhood kidney diseases Vol.6 No.1
We report two cases of hemolytic uremic syndrome (HUS) associated with Escherichia coli O114. Two cases were similar and showed the same clinical courses. After prodrome of diarrhea and vomiting lasting 1-2 days, azotemia persisted for about 10 days, and during that period, the patients were on peritoneal dialysis. They recovered without any sequelae after about 15 days. Direct multiplex PCR of stool culture revealed eae and stx2 gene and the result of ELISA done on the colony positive of one gene confirmed Escherichia coli O114. This is the first report of HUS associated with Escherichia coli O114. We recommend, Shiga toxin producing bacterial Infection must be considered and efforts should be made to scrutinize the organism in all diarrhea-prodrome HUS patients.(J Korean Soc Pediatr Nephrol 2002 ;6 : 102-8) 저자들은 stx2 유전자 양성인 E.coli O114 에 의한 용혈성 요독 증후군 2례를 경험하여 보고하는 바이다. 두 환자 모두 설사와 구토가 1-2일 지속된 후 급작스럽게 요량 감소와 빈혈, 혈소판감소증을 보였으며 10일 간의 복막 투석 치료를 받았으며 급성기에 혈압 증가와 함께 전신성 강직 간대성의 경련이 15-20분 간 있었다. 15여 일 경과 후 후유증 없이 회복되었다. 대변 배양액의 PCR에거 eae와 stx2 유전자를 확인하였고 colony hybridization을 시행하여 O114 혈청형으로 진단하였다. 본 증례는 E.coli O114에 의해 유발된 용혈성 요독 증후군의 첫 국내 보고이다.
건물 화재에서 유해 화학 물질에 대한 노출을 줄이기 위한 스프링클러 적용
윤송이(Song-Yi Yoon),김도형(Dong-Hyung Kim),유수진(Soo-Jin Yoo),장효정(Hyo-Jung Jang),김동현(Dong-Hyun Kim) 호서대학교 공업기술연구소 2022 공업기술연구 논문집 Vol.41 No.1
본 연구에서는 건물 화재 시 굴뚝효과로 인한 화염 및 유독가스의 폭발적 증식 위험성을 인식하고, 저감방안으로 승강로 스프링클러의 적용을 제안하였다. 본 연구를 수행한 결과 다음과 같은 결론을 얻었다. 중대형 화재에 대해 시험한 발화원 온도 1,500℃에서 스프링클러 시스템을 가동하여 연기 및 유해화학물질의 흐름과 상승기류를 억제하였다. 스프링클러 설비를 적용하여 승강로에서 발생하는 굴뚝의 영향을 줄였으나, 전면과 계단실 등 동시 발생하는 심각한 화재 위험에 대비하여 체계적인 방재 및 대피대책이 필요하다. 본 연구에서는 6층으로 구성된 가상 건물을 시뮬레이션하여 모든 고층 건물을 표현하기에는 부족하다. 따라서 동일한 발화원 및 스프링클러 설비를 갖춘 30층 이상 건물의 경우 상층, 중층, 하층으로 구분되며, 스프링클러 적용에 관한 추가 정보에 대한 연구가 필요한 것으로 판단된다. In this study, we recognized the risk of explosive growth of flames and toxic gases due to the chimney effect during a building fire, and proposed the application of a hoistway sprinkler as a reduction method. As a result of conducting this study, the following conclusions were obtained. The sprinkler system was operated at the ignition source temperature of 1,500℃ tested for medium and large fires to suppress the flow of smoke and hazardous chemicals and the updraft. Although the effect of the chimney generated from the hoistway was reduced by applying the sprinkler facility, systematic disaster prevention and evacuation measures are needed to prepare for the serious fire risk that occurs simultaneously such as the front and the stairwell. In this study, it is insufficient to represent all high-rise buildings by simulating a six-story virtual building. Therefore, in the case of a building with more than 30 floors equipped with the same ignition source and sprinkler facilities, it is divided into upper, middle, and lower floors.
Streptococcus parasanguinis에 의한 폐렴과 부폐렴성 흉수
박명린 ( Myoung Rin Park ),박동일 ( Dong Il Park ),유수진 ( Su Jin Yoo ),정선영 ( Sun Young Jung ),은혁수 ( Hyuk Soo Eun ),김민정 ( Min Jung Kim ),박지원 ( Ji Won Park ),박희선 ( Hee Sun Park ),정성수 ( Sung Soo Jung ),김주옥 ( Ju 대한결핵 및 호흡기학회 2011 Tuberculosis and Respiratory Diseases Vol.71 No.5
Streptococcus parasanguinis is a Viridans group bacteria that is most often discovered in the oral cavity and causes dental plaque and endocarditis in a rat model. It has low virulence but an unknown relationship to human respiratory infections. We report on a 61-year-old woman who developed hemoptysis followed by pleuritic chest pain after conscious sedation during a gastroscopic polypectomy and was diagnosed with pneumonia and parapneumonic effusion from Streptococcus parasanguinis isolated in pleural fluid. Microaspiration during the procedure was presumed to play a role in the pathogenesis.
사례보고 : 급성 A형간염에 의해 발생한 혈구포식증후군 1예
서지영 ( Ji Young Seo ),서동대 ( Dong Dae Seo ),전태주 ( Tae Joo Jeon ),오태훈 ( Tae Hoon Oh ),신원창 ( Won Chang Shin ),최원충 ( Won Choong Choi ),유수진 ( Soo Jin Yoo ),한태희 ( Tae Hee Han ) 대한간학회 2010 Clinical and Molecular Hepatology(대한간학회지) Vol.16 No.1
혈구포식증후군은 매우 드물지만 발생할 경우 매우 심각한 임상 경과를 보인다. 조직병리학적으로는 활성화된 대식세포나 조직구가 골수나 세망내피계에서 혈구를 포식하는 모습을 관찰할 수 있으며 임상적으로는 고열, 간비종대, 혈구감소, 간기능이상 및 고페리틴혈증을 보인다. A형간염바이러스는 이차성 혈구포식증후군을 일으키는 매우 드문 원인이다. 저자들은 급성 A형간염 후 혈구포식증후군이 합병된 22세 여자 환자를 보고한다. 환자는 급성 A형간염의 전형적인 경과를 보이며 검사실 검사 및 임상적으로 호전되다가 혈구포식증후군이 발생하면서 간부전 및 파종혈관내응고가 진행되었고 결국 복강 내 출혈로 사망하였다. Hemophagocytic syndrome (HPS) is a rare but serious condition that is histopathologically characterized by activation of macrophage or histiocytes with hemophagocytosis in bone marrow and reticuloendothelial systems. Clinically it presents with high fever, hepatosplenomegaly, pancytopenia, liver dysfunction, and hyperferritinemia. Hepatitis A virus is a very rare cause of secondary HPS. We report a case of a 22-year-old woman infected by hepatitis A virus who was consequently complicated with HPS. She presented typical clinical features of acute hepatitis A, and showed clinical and biochemical improvements. However, HPS developed as a complication of acute hepatitis A and the patient died of intraperitoneal bleeding caused by hepatic decompensation and disseminated intravascular coagulation. (Korean J Hepatol 2010;16:79-82)