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Proportion and Characteristics of Transient Nodules in A Retrospective Analysis of Pulmonary Nodules
( Jin Yeong Yu ),( Su Young Chi ),( Hee Jung Ban ),( Yong Soo Kwon ),( In Jae Oh ),( Kyu Sik Kim ),( Yu Il Kim ),( Sung Chul Lim ),( Song Choi ),( Yun Hyeon Kim ),( Young Chul Kim ) 대한내과학회 2011 대한내과학회 추계학술발표논문집 Vol.2011 No.1
With the popularity of chest CT scanning, differential diagnosis of pulmonary nodule became a great burden to chest physicians. Pulmonary nodules manifest as pure or mixed ground glass opacities (GGO) as well as solid nodules. We performed this retrospective analysis to observe the proportion and predictive factors of transient lesions in a cohort of patients who visited our institution for the differential diagnosis of pulmonary nodules. Methods: We surveyed 317 cases with pulmonary nodules from June 2004 to March 2011. The age distribution showed 57.1±11.3 years (mean±standard deviation, range 30~86). Male patients comprised 62.1% (n=197), and 53.9% of patients were smokers. Results: Nodules from 114 cases (36%) disappeared or decreased in size during follow up, while 203(64%) cases did not change or enlarged. At the initial CT scan, 63.7% showed solid nodules, while 20.2% had mixed GGOs and 16.1% of cases manifested as pure GGOs. During follow up, more than half of GGOs resolved (66.7% in pure GGOs, 54.7% in mixed GGOs) while only 22.3% of solid nodules resolved. Between transient and persistent pulmonary nodules, there were significant differences in age, gender, presence of smoking history, presence of eosinophilia, size and radiologic attenuation of nodules (solid or GGO). In results of multivariate analysis, age (≤55 years), eosinophilia, size(>15mm) and GGO were significant (p<0.05) independent predictors of transient nodule. The main causes of transient nodules were pneumonia or eosinophilic pulmonary infiltrates. Conclusion: About 54~66% of ground glass opacity nodules revolved spontaneously or with medical treatment. Transient nodules could be predicted with clinical and radiological characteristics.
유은영(Yu, Eun-Yeong),윤치근(Yoon, Chi-Keun),양유정(Yang, Yu-Jeong) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.1
본 연구는 대학생의 자아존중감과 정신건강과의 관계를 파악하여 대학생활에서 자아존중감을 향상시키고 건 전한 정신건강을 유지 향상시킬 수 있도록 효과적인 교육 및 상담 활동을 위한 기초자료로 활용하고자 본 연구를 시 도하였다. G시에 소재한 2개 종합대학, 3개 전문대학 재학생을 대상으로 2010년 10월 2일부터 12월 2일까지 설문조 사를 실시하여 468부를 최종 분석하였다. 연구결과는 첫째, 일반적 특성과 인지적 자아, 평가적 자아 및 자아존중감 간의 관계에서는 유의하지 않았다. 둘째, 일반적 특성과 정신건강과의 관계에서는 경제상태, 입학동기, 학과 만족도, 교우관계, 건강상태에서 정신건강 하위영역과 유의한 결과를 보이고 있다. 셋째, 인지적 자아, 평가적 자아 및 자아존 중감 간에는 순상관관계를 나타내고 있다. 인지적 자아, 평가적 자아 및 자아존중감은 강박증, 적대감, 대인예민, 신체 화, 불안, 편집증, 정신증에서 역상관관계가 있은 것으로 나타났다. 결론적으로, 본 연구결과를 기초로 하여 대학생들의 자아존중감을 증진시키고 정신건강을 완화할 수 있는 정규적인 건강교육 프로그램의 개발과 적용이 요구되며, 그에 따른 효과를 검증할 수 있는 후속 연구가 필요하다. This study investigates the relationship between self-esteem and mental health of college students. The data collected is to be utilized to promote effect methods of education and consultation that will improve the self-esteem and mental health of college students. There were a total of 468 questionnaires were distributed and collected from 2 universities and 3 community colleges between October 2nd and December 2nd 2010. The results of data analysis were as follows: First, there were no significant differences in the relationships between general characteristics and the perceptual self, the evaluative self, and self-esteem. Second, there were significant differences in the relationship between general characteristics and mental health according to economic situation, the year of entering college, satisfaction with your department, relationship with fellow classmates, and health status with regards to low mental health. Third, there was a partial correlation between perceptual self, evaluative self, and self-esteem. Perceptual self, evaluative self, and self-esteem were inversely related to obsessive compulsiveness, hostility, interpersonal sensitivity, physical, anxiety, delusional disorder, and psychosis. In conclusion, the results of this study would be used as the foundation for improving the self-esteem of college students and easing mental health with the development and implementation of a formal education program. It is also recognized that follow studies should be conducted to understand additional effects.
Proportion And Characteristics Of Transient Nodules In A Retrospective Analysis Of Pulmonary Nodules
( Jin Yeong Yu ),( Su Young Chi ),( Hee Jung Ban ),( Yong Soo Kwon ),( In Jae Oh ),( Kyu Sik Kim ),( Yu Il Kim1 ),( Sung Chul Lim ),( Song Choi ),( Yun Hyeon Kim ),( Young Chul Kim ) 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.-
Bacterial Pathogens of Ventilator Associated Pneumonia in a Tertiary Referral Hospital
Chi, Su Young,Kim, Tae Ok,Park, Chan Woo,Yu, Jin Yeong,Lee, Boram,Lee, Ho Sung,Kim, Yu Il,Lim, Sung Chul,Kwon, Yong Soo The Korean Academy of Tuberculosis and Respiratory 2012 Tuberculosis and Respiratory Diseases Vol.73 No.1
Background: This study evaluates the bacterial pathogens of Ventilator-associated pneumonia (VAP) in a tertiary referral hospital. Methods: A total of 109 bacterial pathogens from 91 adult patients with VAP, who were admitted to the medical intensive care unit from January 2008 to December 2009, were examined. Clinical characteristics, bacterial pathogens, and resistance profiles were analyzed. Results: Staphylococcus aureus (44%) was the most frequently isolated. Acinetobacter baumanii (30%), Pseudomonas aeruginosa (12%), Stenotrophomonas maltophilia (7%), Klebsiella pneumoniae (6%), and Serratia marcescens (2%) were isolated from the transtracheal aspirates or bronchoalveolar lavage in patients with VAP. There was no significant difference of bacterial pathogens between early and late onset VAP. All isolated S. aureus were methicillin resistant S. aureus; the imipenem resistance rate of A. baumanii was 69%. Conclusion: The two most frequent pathogens of VAP were S. aureus and A. baumanii. There were no pathogenic differences between early and late onset VAP.
지성애(Chi Sung Ae),정대현(Jung Dae Hyun),이승임(Lee Seung Im),조은정(Cho Eun Jung),박유영(Park Yu Yeong),홍현이(Hong Hyun Yi) 한국열린유아교육학회 2007 열린유아교육연구 Vol.12 No.1
본 연구는 유치원과 초등학교 연계교육과 관련된 연구의 동향 분석을 통해 유치원과 초등학교의 연계교육에 관한 정체성을 확립하는데 기초 정보를 제공하고자 하였다. 분석 대상은 1986년부터 2005년까지 발표된 학위논문과 학술지에 수록된 논문들이었으며 연구의 편수, 연구주제(연구내용분석), 자료수집 방법의 영역으로 나누어 분석하였다. 분석결과, 유ㆍ초 연계교육과 관련된 연구의 편수는 전반적으로 점차 증가하는 경향을 보였으며 특히, 2003년에 유ㆍ초 연계교육 관련 연구가 가장 많이 발표된 것으로 밝혀졌다. 연구내용 분석 결과, 교육과정 관련 유ㆍ초 연계교육 연구가 가장 많이 수행된 것으로 나타났으며 연구방법은 조사연구가 가장 많이 이루어진 것으로 밝혀졌다. 또한 연구대상은 문헌, 유치원과 초등학교 교사를 공동 연구대상으로 하는 연구가 많은 것으로 밝혀졌고 연구 자료수집은 질문지를 통한 방법을 가장 많이 활용한 것으로 나타났다. This study analyzed the current research trends of connected education between kindergarten and elementary school. The main purpose of this study was to find trends and problems of research concerned with connected education between kindergarten and elementary school, and to establish and identify the effective methods of connected education between kindergarten and elementary school. The subjects were master theses and doctoral dissertations concerned with connected education between kindergarten and elementary school published between 1986 and 2005, and articles, published in academic journals between 1986 and 2005. The areas of analyzing criteria were research style, subject, number of the study, research methods, and content of the study. The results of this study offer meaningful information to develop connected education between kindergarten and elementary school.
Bacterial Pathogens of Ventilator Associated Pneumonia in a Tertiary Referral Hospital
( Su Young Chi ),( Tae Ok Kim ),( Chan Woo Park ),( Jin Yeong Yu ),( Bo Ram Lee ),( Ho Sung Lee ),( Yu Il Kim ),( Sung Chul Lim ),( Yong Soo Kwon ) 대한결핵 및 호흡기학회 2012 Tuberculosis and Respiratory Diseases Vol.73 No.1
Background: This study evaluates the bacterial pathogens of Ventilator-associated pneumonia (VAP) in a tertiary referral hospital. Methods: A total of 109 bacterial pathogens from 91 adult patients with VAP, who were admitted to the medical intensive care unit from January 2008 to December 2009, were examined. Clinical characteristics, bacterial pathogens, and resistance profiles were analyzed. Results: Staphylococcus aureus (44%) was the most frequently isolated. Acinetobacter baumanii (30%), Pseudomonas aeruginosa (12%), Stenotrophomonas maltophilia (7%), Klebsiella pneumoniae (6%), and Serratia marcescens (2%) were isolated from the transtracheal aspirates or bronchoalveolar lavage in patients with VAP. There was no significant difference of bacterial pathogens between early and late onset VAP. All isolated S. aureus were methicillin resistant S. aureus; the imipenem resistance rate of A. baumanii was 69%. Conclusion: The two most frequent pathogens of VAP were S. aureus and A. baumanii. There were no pathogenic differences between early and late onset VAP.
Lee, Ji Yeong,Kim, Ji Yoon,Cho, Hae In,Lee, Chi Ho,Kim, Han Sung,Lee, Sang Uck,Prosa, Ty J.,Larson, David J.,Yu, Tae Hwan,Ahn, Jae-Pyoung Elsevier 2018 Journal of Power Sources Vol.379 No.-
<P><B>Abstract</B></P> <P>Accelerated capacity fading of LiNi<SUB>1/3</SUB>Co<SUB>1/3</SUB>Mn<SUB>1/3</SUB>O<SUB>2</SUB> (NCM111) electrode by the chemical migration of lithium (Li) or transition metals (TMs), and surface reconstruction in the surface during electrochemical cycling were evaluated by correlative analysis of atom probe tomography (APT) and transmission electron microscopy (TEM). The cycled NCM111 showed a lack of Li at surface which provides the driving force for long-range Ni migration toward surface. A schematic model for phase transformation and the kinetics of TM migration within the layered structure by density functional theory (DFT) calculations was proposed. This study provides insights into capacity loss and voltage fade upon electrochemical charge-discharge process of NCM111 by measuring the variation of Li composition away from the surface.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Correlative TEM and APT analysis of the chemical migration and phase of cycled NCM. </LI> <LI> APT analysis of three-dimensional surface atomic concentration. </LI> <LI> DFT-based phase transformation model and kinetics of TM migration is proposed. </LI> </UL> </P>