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Antimicrobial ceramic hybrid films for keep-freshness packaging with fluorinated illite particles
성동민,장정호 한국세라믹학회 2021 한국세라믹학회지 Vol.58 No.4
This work reports the preparation of a ceramic hybrid fi lm for keep-freshness with enhanced oxygen and moisture permeabil- ity, and antimicrobial properties using fl uorine-coated illite (F-illite) and low-density polyethylene (LDPE) resin. Before the fi lm was manufactured, a master batch of F-illite and LDPE was prepared through an extruder, and a large amount of LDPE resin was mixed to produce a fi lm containing 4wt% F-illite. The amount and dispersity of the F-illite in the LDPE matrix were confi rmed by TGA, wide-angle XRD and SEM analysis. As a result, the F-illite hybrid fi lms had an oxygen transmission rate (OTR) of 13,430 mL/m 2 day), which is higher than 10,309 mL/m 2 day of the general LDPE fi lm. Moreover, the water vapor transmission rate (WVTR) was 20.13 g/m 2 , which was higher than that of the general LDPE fi lm 16.13 g/m 2 ·day. In addition, the F-illite hybrid fi lm showed more than 99% antibacterial activity against S. aureus .
한방의료기관 이용자 중 근골격계질환자와 비근골격계질환자의 인식도 및 만족도 특성연구
성동민,최성용,박민정,성수현,Sung, Angela Dongmin,Choi, Sung Young,Park, Minjung,Sung, Soo-Hyung 대한예방한의학회 2020 대한예방한의학회지 Vol.24 No.3
Background : The study aimed at examining the awareness and satisfaction level of Korean medicine treatment of musculoskeletal patients and non-musculoskeletal patients. Method : The frequency and percentage were calculated to identify the overall characteristics, and to identify the characteristics of the respondents who visited the hospital to treat musculoskeletal diseases and those who visited for the treatment of non-musculoskeletal diseases, the correlation between the variables was analyzed using the chi-square analysis (χ2-test). Furthermore, analysis items were compared depending on detailed diseases within the musculoskeletal disorder (lumbar pain, sprains, arthritis, frozen shoulders, spondylitis, disc) Result : Respondents who used Korean medicine for the purpose of treating musculoskeletal diseases had answered that costs involved in Korean medicine was expensive, and answered that herbal decoction was the preferred Korean medicine treating method for expanding health insurance benefits. Regarding the safety awareness of Korean medicinal herbs, responses that said it was safe was high, and their willingness to use and recommend Korean medicine in future was also high. Respondents who used Korean medicine for the purpose of treating musculoskeletal diseases said they were overall satisfied along with the attitude of Korean medical doctors, treatment results, and costs of treatments. Conclusion : The study was aimed at securing basic data to indirectly identify the national demand for Korean medicine, through investigating the level and degree of differences that exist in the perception and satisfication level and further find a point where policy intervention is possible in future.
2.3 kW급 전기자동차 배터리팩용 냉각 장치의 열전달 특성에 관한 해석적 연구
성동민,박용석,성홍석,서정세,Seong, Dong-Min,Park, Yong-Seok,Sung, Hong-Seok,Suh, Jeong-Se 한국기계가공학회 2022 한국기계가공학회지 Vol.21 No.6
The improvement in the battery performance and life using a battery thermal management system directly affects the improvement in the performance, life, and energy efficiency of electric vehicles. Therefore, this study numerically analyzed the heat exchange processes between the coolant inside the cooling plate channel and the heat generated by the battery. The cooling performance was analyzed based on the average temperature, temperature uniformity, and the maximum and minimum temperature differences of the battery. A performance difference existed depending on the coolant inlet temperature but showed the same tendency of cooling performance according to the shape of each plate's channel. Type 1 showed the best results in terms of battery temperature uniformity, which is the most important measure of battery performance; Type 2 showed the best results in terms of the average temperature of the battery; and Type 3 showed the best results in terms of the maximum and minimum temperature differences of the battery compared with that of the other cooling plates.
한의학에서 근거중심진료와 표준화의 필요성 - 2008, 2011, 2014년 한방의료이용실태조사(보건복지부)중 소비자의견을 중심으로 -
성안젤라동민,허승,오현호,이정준,박성준,이선동,Sung, Angela Dong Min,Heo, Seung,Oh, Hyun Ho,Lee, Jung Jun,Park, Sung Joon,Lee, Sundong 대한예방한의학회 2016 대한예방한의학회지 Vol.20 No.3
Objectives : It focuses on what the consumers expected Korean medicine to improve on, and analyzes patients' impressions. Methods : This research is based on the Ministry of Health and Welfare's Survey on Usage of Korean Medicine (2008, 2011, and 2014) and was new analysis for our research objective. Results : The general consensus among the consumers was uncertainty of effectiveness, expensive costs, side effects, need for expertise, lack of scientific evidence, expansion of diseases treated, and improvement of equipment. Consumers distrusted Korean medicine due to its uncertainty of its effectiveness, expensive costs, side effects, and lack of scientific evidence for its effectiveness, and avoided using Korean medicine. Conclusions : These results seem to be a combination of the Korean medicinal doctors treating patients not based on evidence but on their individual experiences, lack of health insurance for Korean medicine resulting in expensive costs, lack of research on toxicity and safety of Korean medicine, and lack of scientific and clinical studies for evidence-based research. To solve these problems, the Korean medicine community needs to standardize treatments based on evidence, and look to Chinese medicine for possible solutions.
주관적 건강인식수준에 따른 한방의료기관 이용환자의 특성 비교 - 2011년 한방의료이용 및 한약소비실태조사(보건복지부)를 중심으로 -
성안젤라동민,최성용,박해모,이선동,Sung, Angela Dongmin,Choi, Sungyong,Park, Haemo,Kim, Hyundo,Lee, Sungdong 대한예방한의학회 2015 대한예방한의학회지 Vol.19 No.3
Objective : The purpose of this study was to identify characteristics of patients' self-perceived health in traditional Korean medical facilities. Method : This research was conducted based on the survey on patients whom have visited traditional Korean medical facilities in 2011 by the Ministry of Health and Welfares and Korean Institute for Health and Social Affairs. Using a sample of 3,931 (1,180 male and 2,751 female) outpatients' self-perceived health based on the data from usage and consumption of Korean Medicine. 'Healthy', 'Fair', and 'Poor Health' were used to measure patients' self-perceived health status. The data was analyzed by frequency, t-test, cross correlation analysis and multiple logistics regression analysis using the SPSS program package. Results : Sex(P<0.001), age(P<0.001), marital status(P<0.001), education(P<0.001), employment status(P<0.001), occupation(P<0.001), health insurance(P<0.001) and income level(P<0.0001) showed statistical significance. Main Treatment Facilities(P<0.001), experience of taking Korean medicine(P=0.032), experience of receiving acupuncture treatment(P<0.001), number of visits(P<0.001), medical expense (P=0.005), and subjective health status after the treatments showed statistical significance for Korean herbal medicine(P=0.038), acupuncture (P=0.001), cupping therapy(P=0.006), oriental physiotherapy(P=0.003), and treatment satisfaction(P<0.001). For subjective health status based on suffering disorders in the past three months, the response of poor health was higher in the group suffering recent illnesses. Statistical significance was seen in hypertension (P=0.002), arthritis(P<0.001), lumbar pain(P<0.001), diabetes mellitus(P=0.001), stroke(P<0.001), hwa-byung (P=0.001), gastric disorders(P=0.021), common cold(P<0.001), ankle sprain(P<0.001), muscular injury(P<0.001), lumbar sprain(p=0.009) and fracture(P=0.03). Also the number of diseases during the past three months showed statistical significance(P<0.001). Statistical significance was also seen in Level of knowledge(P<0.001), route of information(P<0.001), reliability of Korean medicine(P=0.003), insurance coverage(P=0.005), medical costs(P<0.001), and future willingness to use Korean medicine(P<0.001). As a result of the multiple logistics regression analysis, risks of subjective poor health statistically increased in female population, elderlies, medicaid beneficiaries, less educated, higher medical expense, and more disorders during the past three months. Conclusion : Patients' self-perceived health status has significant differences with each variables such as sex, age, marital status, education, health insurance, medical expense, number of diseases.