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최민진,조정민,최영호,최민호,이춘수,성한기,이경실,박기훈,황세종,Choi, Min Jin,Cho, Jeong-Min,Choi, Young Ho,Choi, Min Ho,Lee, Choon Soo,Sung, Han Ki,Lee, Kyoung Sil,Park, Ki Hun,Hwang, Se Jong 한국화학공학회 2022 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.60 No.2
In this paper, paint-free metallic plastic material, polypropylene (PP) and acrylonitrile styrene acrylate (ASA) materials were investigated on the applications for bumper skid plate and outside mirror housing parts. In order to maximize metallic effect, type, size and content of aluminum pigment were optimized based on flop index. Hybrid aluminum pigments with different aspect ratios were used to conceal weld lines. By controlling the fluidity of the material, the flow mark problem, generated on the surface of the part, was resolved. We also investigated the surface defects of flow and weld lines by using the developed modeling and simulation.
최민진(Min Jin Choi),조정민(Jeong-Min Cho),최영호(Young Ho Choi),최민호(Min Ho Choi),이춘수(Choon Soo Lee),성한기(Han Ki Sung),이경실(Kyoung Sil Lee),박기훈(Ki Hun Park),황세종(Se Jong Hwang) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
In this paper, mold in color polypropylene (PP) and acrylonitrile styrene acrylate (ASA) materials were investigated on the applications for skid plate and outside mirror housing parts. In order to maximize the metallic effect,the type, size and content of aluminum pigment were optimized based on flop index. Hybrid aluminum pigments with different aspect ratios were used to conceal weld lines. By controlling the fluidity of the material,the flow mark problem, generated on the surface of the part, was resolved. We also investigated the surface defects of flow and weld lines by using the developed modeling and simulation.
중증도 분류 간호사에 의한 응급환자 중증도 분류 신뢰도 측정 연구: Emergency Severity Index Version 4를 중심으로
최희강,최민진,김주원,이지연,신선화,이현정,Choi, Hee Kang,Choi, Min Jin,Kim, Ju Won,Lee, Ji Yeon,Shin, Sun Hwa,Lee, Hyun Jung 한국중환자간호학회 2012 중환자간호학회지 Vol.5 No.2
Purpose: The aim of this study was to measure the inter-rater reliability of Emergency severity index (ESI) version 4 among triage nurse. Methods: This study was carried out from August 11, 2010 to September 7, 2010 in a regional emergency department. Data collection was done by ten triage nurses who trained ESI v.4. Two research nurses and ten triage nurses scored the ESI version 4 to the patients as references, independently. We calculated the weighted kappa between the triage nurses and research nurses to evaluate the consistency of the ESI v.4. Results: A total of 233 patients were enrolled in this study. Classification of ESI level was as follows - level 1 (0.4%), level 2 (21.0%), level 3 (67.8%), level 4 (9.4%), and level 5 (1.3%). Inter-rater reliability by weighted kappa was 0.79 (95% Confidence Interval= 0.74-0.83) and agreement rate was 87.1%. Under-triage rate by triage nurse was 6.0% and over-triage rate was 6.9%. Conclusion: For this study, inter-rater reliability was measured good level between triage nurses and research nurses in Korean single ED.
자생식물 Essential Oil 5 종의 항 아토피피부염 활성 연구
정정화 ( Jeong-hwa Jeong ),( Thao Kim Nu Nguyen ),최민진 ( Min-jin Choi ),응웬리 ( Ly Thi Huong Nguyen ),신흥묵 ( Heung-mook Shin ),이병욱 ( Byung-wook Lee ),양인준 ( In-jun Yang ) 대한화장품학회 2021 대한화장품학회지 Vol.47 No.1
본 연구는 개똥쑥(Artemisia annua L., AA), 유자(Citrus junos Sieb. ex TANAKA, CJ), 산국화(Chrysanthemum boreale Makino, CB), 잣나무(Pinus koraiensis, PK), 금강송(Pinus densiflora for. erecta, PD) 총 5 종의 자생식물 essential oil의 항 아토피 효능을 확인하기 위한 실험이다. 항균 효과를 확인하기 위해 자생식물 essential oil 5 종을 Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans 총 4 종류의 균에 처리했다. 항염증 효과를 확인하기 위해 TNF-α와 IFN-γ (TI)를 처리한 HaCaT 세포에 5 종의 자생식물 essential oil을 처리했다. AA, CJ, CB, PK, PD은 10 mg/mL 농도에서 Candida albicans에 대한 항균 효과를 나타냈다. AA (1 μg/mL), CB (1 μg/mL), PK (0.1, 1 μg/mL)에서 thymus and activation-regulated chemokine (TARC) 생성량이 억제되었고, AA 및 PK (1 μg/mL)에서 macrophage-derived chemokine (MDC) 생성량이 억제되었으며, AA(0.1, 1 μg/mL), PK (0.1, 1 μg/mL)에서 IL-6 생성량이 억제되었다. AA, CB, PK essential oil의 항균 및 항염증효과가 확인되었으며, 이에 아토피 피부염 완화에 기여할 수 있음을 기대한다. This study is an experiment to evaluate the anti-atopy efficacy of five kinds of natural plant essential oils; Artemisia annua L. (AA), Citrus junos Sieb. ex TANAKA (CJ), Chrysanthemum boreale Makino (CB), Pinus koraiensis (PK), and Pinus densiflora for. erecta (PD). Through Agar diffusion test, five species of native plant essential oils were treated in a total of four strains, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, and Candida albicans. In order to invest the anti-inflammatory effect, five kinds of natural plant essential oils were treated in HaCaT cells-induced by TNF-α and IFN-γ (TI). AA, CJ, CB, PK and PD showed antibacterial e ffects on Candida albicans at a concentration of 10 mg/mL. We also found that the thymus and activation-regulated chemokine (TARC) expression was suppressed in 0.1 μg/mL of PK, 1 μg/mL of AA, CB, and PK. macrophage-derived chemokine (MDC) expression was suppressed in 1 μg/mL of AA and PK. IL-6 expression was suppressed in 0.1, 1 μg/mL of AA, PK in HaCaT cells. Hence it suggests that AA, CB, and PK have the anti-inflammatory effects, and it could contribute to atopic dermatitis relief by reducing the infiltration of immune cells to inflamed area.
한국형 응급환자 분류도구 및 환자의존도에 따른 환자군별 간호시간과 간호사 배치수준
정은희 ( Jung Eun Hee ),조성현 ( Cho Sung-hyun ),이상림 ( Lee Sang Lim ),최민진 ( Choi Min Jin ),김성숙 ( Kim Sung Sook ),최은경 ( Choi Eun Kyung ),한경화 ( Han Kyeong Hwa ),전미영 ( Jeon Mi Young ) 병원간호사회 2020 임상간호연구 Vol.26 No.3
Purpose: The purpose of this study was to analyze nurse staffing according to patients' acuity and dependency by measuring nursing hours. Methods: The study sample included patients who visited the adult emergency departments (EDs) of three tertiary referral hospitals and nurses who worked on shifts for 48 hours from October 24 to 26, 2019. Hourly patient census and nurse staffing were analyzed. Patient acuity was measured using the Korean Triage and Acuity Scale (KTAS), ranging from Level 1 (highest) to Level 5 (lowest). Patient dependency was measured using six items (e.g., clinical attention and communication) and classified into four groups. Nursing activities were observed every 10 minutes and nursing hours per patient and nurse staffing were analyzed according to acuity and dependency. Results: Nurse-to-patient ratio ranged from 1:1.8 to 1:4.2 during the 48 hours of observation. The average work hours of nurses, excluding breaks and meals, was 8.57 hours; 42.5% of which was spent providing direct care. Higher acuity and dependency were associated with higher nursing hours and staffing level. Patients with KTAS Level 1 were provided 74.3 minutes per hour, 5.02 times higher than Level 5 (14.8 minutes). Patients in the highest dependency group were provided 87.4 minutes per hour, 5.75 times higher than the lowest group (15.2 minutes). Newly arrived patients received more nursing hours than continuously stayed patients within the same KTAS Levels. Conclusion: Large variations were found in hourly patient census, acuity, and dependency. Nurse staffing in EDs should be determined based on patient acuity and dependency.