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

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.

약용식물 추출물의 이화학적 특성과 피부 상재균에 미치는 영향

구민경(Min Kyung Gu),송하영(Ha Young Song),홍은아(Eun Ah Hong),정윤조(Yun Jo Jung),조연재(Yeon Jae Jo),김광엽(Kwang Yup Kim),이준수(Junsoo Lee),정헌상(Heon Sang Jeong) 한국식품영양과학회 2024 한국식품영양과학회지 Vol.53 No.10

본 연구는 피부 상재균에 영향을 미치는 것으로 알려진 약용식물 추출물에 대한 이화학적 특성을 분석하고 피부 유익균의 생육 증진과 유해균의 생육 억제 효과를 확인하였다. 약용식물 추출물의 pH는 물 및 70% 에탄올 추출물에서 각각4.39~6.65 및 5.45~7.28 범위였으며, 총 폴리페놀 함량은 물 추출물에서 목단피가 19.02 mg GAE/sample g, 70% 에탄올 추출물에서 자작나무 추출물이 48.61 mg GAE/sample g으로 가장 높았다. 피부 유익균의 생육 증진 효과는 물 추출물에서 병풀 추출물이 24.90%로 가장 높았으며, 그 다음으로 구절초가 높았다. 생육저해능은 마름 70% 에탄올추출물이 S. aureus 및 C. acnes균에 대하여 각각 0.75 및 1.07로 가장 높았다. 이상의 결과는 피부 마이크로바이옴의 균형을 유지하고 피부질환을 예방할 수 있는 천연소재 개발에 대한 중요한 정보를 제공할 수 있을 것으로 판단된다. This study evaluated the physicochemical characteristics of medicinal plant extracts that affect the skin commensal bacteria and confirmed their effects on promoting the growth of beneficial skin bacteria while inhibiting the growth of detrimental bacteria. The pH of the medicinal plant extracts ranged from 4.39 to 6.65 and 5.45 to 7.28 for water and 70% ethanol extracts, respectively. The total polyphenol content of the water extract was the highest value of 19.02 mg GAE/sample g in Paeonia suffruticosa, and 70% ethanol extract was the highest value of 48.61 mg GAE/sample g in Betula platyphylla. The growth-promoting effect of beneficial skin bacteria in water extracts showed the highest value of 24.90% in Centella asiatica extract, followed by the Chrysanthemum zawadskii extracts. The growth inhibition effect (log reduction) of skin detrimental bacteria was the highest value of 0.75 and 1.07 for Trapa japonica 70% ethanol extract against Staphylococcus aureus and Cutibacterium acnes, respectively. These results are expected to provide valuable information for developing medicinal materials that can maintain the balance of the skin microbiome and prevent skin diseases.

간호대학생의 양생(養生)에 미치는 영향요인

구민경(Gu Min Kyung) 학습자중심교과교육학회 2018 학습자중심교과교육연구 Vol.18 No.6

본 연구는 간호대학생의 양생(養生)에 미치는 영향요인을 파악하고, 간호중재에 필요한 기초자료를 마련하고자 본 연구를 실시하였다. 자료수집은 2017년 6월 12일부터 2017년 7월 19일까지 임의로 선정된 국가고시를 앞두고 있는 4학년 간호대학생 150명을 대상으로 본 연구자가 해당 간호대학생에게 연구의 목적과 내용을 설명한 후 설문지를 배부하고 자가 보고하여 작성토록 하였다. 자료분석은 SPSS Window 21.0 Program을 이용하여 기술통계, ANOVA, t-test, Stepwise multiple regression으로 분석하였다. 연구결과, 간호대학생의 양생(養生)에 미치는 영향요인은 연령(β=0.35), 음주상태(β=0.24), 시험불안(β=-0.22), 자기효능감(β=0.21), 성별(β=-0.21), 가족지지(β=0.19), 취미생활(β=0.17), 운동(β=0.17) 순으로 나타났으며, 설명력은 59.6%였다. 간호대학생의 양생(養生)정도는 자기효능감 정도가 높을수록, 가족지지가 높을수록,시험에 대한 불안이 낮을수록, 우울정도가 낮을수록 양생(養生)정도가 높은 것으로 나타났다. 따라서 본 연구를 통해 한국의 정서, 사회적 문화에 맞게 개발된 양생(養生)측정도구를 활용하여 그게 걸 맞는 질적인 간호를 제공하는 것이 필요하다고 볼수 있다. Purpose: The study was to examine and identify the predictors of Yangsaeng in Korean nursing students. Methods: A cross-sectional descriptive design was employed. The study particiapants consisted of 150 nursing students in S cities and K, C, J province, South Korea. The male participants were 35 (23.3%) and the female were 115(76.7%). Measures were Yangsaeng, test anxiety, self-efficacy, Beck Depression Inventory (BDI), and family support scale. Results: The analyses showed that the prediction model for Yangsaeng in Korean nursing students was significant (F=15.64, p<.001). The value of the adjusted R2 was 0.60, which corresponds to the explanatory power of 59.6%. The predictor that was found to have influence on Yangsaeng in Korean nursing students was age(β=0.35), drinking (β=0.24), test anxiety (β=-0.22), self-efficacy (β=0.21), gender (β=-0.21), family support (β=0.19), leisure activity (β=0.17) and exercise (β=0.17). Conclusions: This study provides between Yangsaeng and age, drinking, test anxiety, self-efficacy, gender, family support, leisure activity, exercise identified in this study can have an impact on strategies to improve the health of Korean nursing students. Therefore, the suggest that in developing interventions and practice for Yangsaeng of Korean nursing students.

COVID-19 확진 경험 대학생의 우울 영향 요인

구민경 ( Gu Minkyung ) 한국정신간호학회 2024 정신간호학회지 Vol.33 No.1

Purpose: This study aimed to confirm the prevalence of depression among college students as a result of the aftereffects of COVID-19, and to examine the influence of interpersonal competence, positive psychological capital, resilience, and family support on depression. Methods: A survey was conducted involving 238 college students aged 20 or older who had tested positive for COVID-19. Multivariate logistic regression analysis was performed using the SPSS/WIN 27.0 Program, and odds ratios and 95% confidence intervals were calculated. Results: Among the students diagnosed with COVID-19 in this study, those who received an allowance (OR=1.23, p=.035), engaged in alcohol consumption (OR=1.84, p=.027), and played online games (OR=2.17, p<.001) were found to have higher levels of depression as a result of the aftereffects of COVID-19. Additionally, a lack of interpersonal competence (OR=2.12, p<.001), positive psychological capital (OR=2.43, p=.037), and family support (OR=1.56, p=.038) had a greater impact on depression among students experiencing the aftereffects of COVID-19. Conclusion: Active interest and intervention from colleges and relevant organizations are necessary to address the various challenges faced by college students in the aftermath of COVID-19, and to meet their diverse needs in stressful situations.

지역사회 독거노인의 자가간호에 미치는 영향요인

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.

SiOC 코팅을 이용한 리튬이온전지용 실리콘 복합소재의 전기화학적 성능 연구

박정은(Jeongeun Park),구민경(Mingyeong Gu),최원창(Wonchang Choi) 한국전지학회 2021 한국전지학회지 Vol.1 No.2

본 논문에서는 실리콘 오일을 이용하여 실리콘 소재의 표면에 SiOC를 코팅했다. 실리콘 오일은 열처리 공정 동안 열분해 및 세라믹 화를 거치면서 실리콘 소재 표면에 얇은 SiOC 층을 형성했으며, 형성된 SiOC 코팅층에 의해 안정적인 충/방전 거동을 보였다. 또한 SiOC내에 존재하는 자유 탄소에 의해 고율 충/방전 시 향상된 성능을 나타냈다. In this paper, SiOC was coated on the silicon surface by simple heat treatment of silicone oil. During heat-treatment, silicone oil experienced ceramization and subsequently formed thin SiOC layer on the surface of Silicon materials and this SiOC coating layer contributed to the stable cycling performance. In addition, the synthesized electrode showed excellent performance at high rates due to improved conductivity due to the free carbon of the SiOC materials.

전신마취 수술 환자의 스트레스와 통증 및 회복실 간호요구

조지현(Jo, Jihyun),구민경(Gu, Minkyung),석소현(Sok, Sohyune) 한국성인간호학회 2019 성인간호학회지 Vol.31 No.3

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.

식품가공 부산물 업사이클링을 위한 분리단백질의 이화학적 특성

홍은아(Eun Ah Hong),송하영(Ha Young Song),구민경(Min Kyung Gu),정윤조(Yun Jo Jung),조연재(Yeon Jae Jo),김관수(Kwan Soo Kim),이준수(Junsoo Lee),정헌상(Heon Sang Jeong) 한국식품영양과학회 2024 한국식품영양과학회지 Vol.53 No.11

This study evaluated the physicochemical properties of proteins isolated from the processing of by-products of cereal and oilseed crops. The crude protein content of the isolated proteins was 74.72%, 74.35%, 86.84%, 82.07%, 85.52%, and 85.31% for rice bran, barley bran, wheat bran, soybean meal, perilla meal, and sesame meal, respectively. The protein recovery rate was the highest at 77.85% in perilla meal and the lowest at 44.17% in wheat bran. The total essential amino acid content ranged from 30.51 to 39.48 mg/100 mg, with arginine and methionine being the highest in sesame meal protein at 11.13 and 2.94 mg/100 mg, respectively, and lysine the highest in soybean meal protein at 7.08 mg/100 mg. The oil absorption capacity was the highest at 408.96% in sesame meal protein, and the lowest at 180.32% in soybean meal protein. Solubility ranged from 25.97% (sesame meal) to 93.14% (soybean meal). Based on the above results, the combination of sesame meal protein and soybean meal protein, both isolated from food processing by-products, can be utilized as an excellent protein source that complements the amino acid balance.