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탄소나노튜브가 첨가된 전기방사 멤브레인의 미세입자 제거 성능 비교에 관한 연구
구민경,김동완,한상일,Gu, Minkyung,kim, Dongwan,Han, Sangil 한국화학공학회 2018 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.56 No.1
미세입자가 미치는 부정적인 영향으로 인해 관심이 증가하여 공기 중 미세입자를 제거할 수 있는 멤브레인 필터의 성능향상을 위해 다양한 방법을 도입하여 왔다. 필터 섬유 제조 기술 중 전기 방사 기술이 최근에 가장 주목을 받고 있으며, 수 백 nm에서 수 십 ${\mu}m$ 까지의 균일한 직경의 섬유를 제조 할 수 있는 장점을 가진다. 전기 방사 기술로 생성한 섬유는 초극세 섬유로서 섬유의 생성과 동시에 3차원의 네트워크로 적층된 형태의 다공성 웹은 초박막, 초경량이며 기존 섬유에 비해 부피 대비 표면적비가 높고, 높은 기공도를 가지는 멤브레인을 제조 할 수 있으므로, 전기 방사 멤브레인의 여과 필터 성능이 크게 향상 될 것으로 예상이 된다. 본 연구에서는 polystyrene, cellulose acetate 멤브레인 필터를 이용하여 섬유 두께, 탄소나노튜브의 조성비에 따른 필터로서의 여과성능을 살펴보았으며, 필터소재의 성능 비교실험 결과 적정량의 CNT 소재의 첨가로 인해 필터의 여과 성능이 향상되는 것을 알 수 있다. There have been a lot of study to improve the performance of membrane filters as the removal of particulate matter has been of great interest due to the negative effects. Among the membrane fabrication techniques, the electrospinning technique is the most promising because it can produce uniform fibers ranging from nano to micrometer size. The electrospun membranes will greatly improve the filtration performance due to the high ratio of surface area to volume and the high porosity. In the present study, polystyrene (PS) and cellulose acetate (CA) polymers were used to produce the membranes with carbon nanotube (CNT), showing the filtration performances were improved with the optimal amounts of CNT.
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우희영(Heeyoung Woo),구민경(Minkyung Gu) 한국노인간호학회 2023 노인간호학회지 Vol.25 No.1
Purpose: This study aimed to identify the factors affecting the self-care of older adults living alone in a community during the COVID-19 pandemic. Methods: Data were collected through a questionnaire survey of 160 older adults living alone in Seoul, Gyeong-gi, and Chung-cheong province using self-care, health conservation, psychological well-being, and self-esteem scales. Data were analyzed using the Pearson correlation coefficients, t-test, analysis of variance ANOVA, and Hierarchial stepwise multiple regression with the SPSS/Windows version 25.0 program. Results: The greatest variables affecting the self-care for older adults living alone were compliance with COVID-19 quarantine rules (β=-.04, p=.054), interactions with the neighborhood (β=-.06, p=.029), economic status (β=.10, p=.008), health conservation (β=.29, p<.001), psychological well-being (β=.18, p=.008), and self-esteem (β=.35, p<.001). The explanatory power of these variables was 70.0% (F=18.45, p<.001). Conclusion: Regarding the COVID-19 pandemic, these factors were highly mutually related to older adults living alone, so it is necessary for older adults living alone to actively participate in self-care programs using direct and indirect community resources.
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암 병원 간호사의 섬망에 대한 지식, 간호수행 및 스트레스
오혜수(Hyesu Oh),구민경(Minkyung Gu),윤로사(Rosa Yoon),석소현(Sohyune Sok) 한국노인간호학회 2022 노인간호학회지 Vol.24 No.4
Purpose: We aimed to elucidate the relationship between the knowledge, nursing performance, and stress of delirium in cancer hospital nurses. The results might help provide better and appropriate nursing care to patients with delirium. Methods: As a descriptive study, 143 nurses who had worked for over one year at one cancer hospital in S city were included in this study. The data collection period was from February 1 to 15, 2021. Results: It was found that cancer hospital nurses with delirium-related nursing education had a high knowledge of delirium. Cancer hospital nurses who were married and had an educational background above graduate school showed relatively high nursing performance against delirium. Also, cancer hospital nurses had relatively high stress levels. Conclusion: Therefore, an opportunity to develop and participate in a systematic education program is necessary to raise cancer hospital nurses’ knowledge levels of delirium and improve nursing performance for delirium. Furthermore, it is necessary to have a stress management program for delirium for cancer hospital nurses.
ScienceON
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