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이지민,김승인,Lee, Ji-Min,Kim, Seung-In 한국디지털정책학회 2020 디지털융복합연구 Vol.18 No.9
This study is cases study of sustainable eco-friendly cosmetics packages. The importance of eco-friendly packages has been increasing as environmental issues have recently emerged around the world. Domestic cosmetics industry are releasing sustainable package designs with these changes, but they are limited. In this study, sustainable package criteria were divided and analyzed based on each of the five prior studies of domestic and foreign cases. Studies have confirmed that there is no diversity in the materials and designs of sustainable packages in Korea compared with other countries. Also, it could be seen that there was the lack of consumer-led eco-friendly campaigns. Starting point of research, it is expected that this study may help continue to study better sustainable cosmetics packages in the future. 본 연구는 지속 가능한 친환경 화장품 패키지에 관한 사례 연구이다. 최근 전 세계적으로 환경 문제가 대두되면서 친환경 패키지의 중요성이 높아지고 있다. 국내 화장품 업계는 이러한 변화에 발맞춰 지속 가능한 패키지 디자인을 출시하고 있지만, 한정적이다. 본 연구에서는 국내외 사례 각 5가지 선행 연구를 바탕으로 지속 가능한 패키지 기준을 나누어 분석하였다. 연구 결과 국내에는 국외와 비교하여 지속 가능 패키지의 소재와 디자인이 다양하지 않다는 것을 확인하였다. 또한, 소비자 주도의 친환경 캠페인이 부족하다는 것을 알 수 있었다. 이 연구를 기점으로 삼아 앞으로 더 나은 지속 가능한 화장품 패키지에 대한 연구가 계속해서 이루어지기를 기대한다.
Dental Treatment in a Patient with CINCA Syndrome under General Anesthesia
이지민,송지수,현홍근,김영재,김정욱,장기택,이상훈,신터전,Lee, Ji Min,Song, Ji-Soo,Hyun, Hong-Keun,Kim, Young-Jae,Kim, Jung-Wook,Jang, Ki-Taeg,Lee, Sang-Hoon,Shin, Teo Jeon Korean Academy of Pediatric Dentistry 2018 大韓小兒齒科學會誌 Vol.45 No.1
Chronic infantile neurological cutaneous articular (CINCA) 증후군은 만성 염증성 질환으로, 주기적으로 발열을 일으킨다. 이 증후군의 환아들은 전신적인 염증으로 인해 치과적 문제에 노출되기 쉽다. 협조가 어려운 환자에 있어서 전신마취는 행동 조절 방법으로 널리 사용되어 왔으며, CINCA 증후군의 경우 전신적인 염증성 질환이기 때문에 전신마취를 시행할 때 있어 주의를 기울어야 한다. 본 증례 보고에서는 CINCA 증후군을 가진 비협조적 환아를 전신마취 하 치과 치료 시행한 증례보고와 함께 이러한 환아들에서 치과치료 전 고려사항을 고찰하고자 한다. Chronic infantile neurological cutaneous articular (CINCA) syndrome periodically causes fever along with inflammation in multiple organs. Patients with this condition are vulnerable to dental problems due to systemic inflammation. For uncooperative patients, general anesthesia has been widely used to control negative behavior. However, caution should be exercised when administering general anesthesia in these patients because this syndrome is pro-inflammatory. The present case report describes the clinical considerations of the dental treatment of an uncooperative child with CINCA syndrome who was treated under general anesthesia.
사마륨-코발트 자성 섬유 제조를 위한 환원 거동 연구 및 환원-확산 공정의 최적화
이지민,김종렬,좌용호,Lee, Jimin,Kim, Jongryoul,Choa, Yong-Ho 한국분말야금학회 2019 한국분말재료학회지 (KPMI) Vol.26 No.4
To meet the current demand in the fields of permanent magnets for achieving a high energy density, it is imperative to prepare nano-to-microscale rare-earth-based magnets with well-defined microstructures, controlled homogeneity, and magnetic characteristics via a bottom-up approach. Here, on the basis of a microstructural study and qualitative magnetic measurements, optimized reduction conditions for the preparation of nanostructured Sm-Co magnets are proposed, and the elucidation of the reduction-diffusion behavior in the binary phase system is clearly manifested. In addition, we have investigated the microstructural, crystallographic, and magnetic properties of the Sm-Co magnets prepared under different reduction conditions, that is, $H_2$ gas, calcium, and calcium hydride. This work provides a potential approach to prepare high-quality Sm-Co-based nanofibers, and moreover, it can be extended to the experimental design of other magnetic alloys.
Seismicity of the 2016 ML 5.8 Gyeongju earthquake and aftershocks in South Korea
이지민,류용규,박순천,Young Mo Ham,Jong Soo Park,김명수,Sang Mi Park,Hyen Geom Cho,Keun Su Lee,In Sun Kim,Hye Su Kim,Sunhee Bae 한국지질과학협의회 2018 Geosciences Journal Vol.22 No.3
Since the modern seismograph network by the Korea Meteorological Administration (KMA) had been operated from 1978, the largest earthquake (ML 5.8) occurred in Gyeongju, South Korea on 12 September 2016. ML 5.1 and 5.8 earthquakes occurred successively and damaged mostly old building structures around Gyeongju. Aftershocks continued to occur, clustering around the epicenters of the two events. Number of observed aftershocks with ML ≥ 0.1 was 3,376 from 12 September 2016 to 31 March 2017 and these aftershocks were located by manual procedure. Since the origin time of the ML 5.8 earthquake, 339 and 672 aftershocks (ML ≥ 0.1) occurred on 12 and 13 September 2016, respectively. The occurrence rate of aftershocks decreased exponentially with time after 16 September. It is observed that the seismicity of the 2016 Gyeongju earthquake and aftershock sequences is dominant in the Yangsan Fault System. The distribution of aftershocks is NNE-SSW direction along the Yangsan Fault System, which agrees with the fault plane solutions of main shock and foreshock showing the strike-slip faulting. These aftershocks concentrate within the epicentral distance of 5 km from main shock and the depth distribution of aftershocks is mainly around 11–15 km with vertical trends. With regard to the seismicity of the 2016 Gyeongju earthquake’s aftershocks the full catalog with ML ≥ 1.2 based on Mc is suggested in this study. Finally the distribution of aftershock sequence correlated to the focal mechanisms can provide specific seismicity in the Gyeongsang Basin.
이지민,Jae Hyeong Lee,Sang-Ah Park,Il-Geun Park,Bo Kyung Yoon,이정신 한국분자세포생물학회 2023 Molecules and cells Vol.46 No.8
Gastric cancer stem-like cells (GCSCs) possess stem cell properties, such as self-renewal and tumorigenicity, which are known to induce high chemoresistance and metastasis. These characteristics of GCSCs are further enhanced by autophagy, worsening the prognosis of patients. Currently, the mechanisms involved in the induction of stemness in GCSCs during autophagy remain unclear. In this study, we compared the cellular responses of GCSCs with those of gastric cancer intestinal cells (GCICs) whose stemness is not induced by autophagy. In response to glucose starvation, the levels of β-catenin and stemness-related genes were upregulated in GCSCs, while the levels of β-catenin declined in GCICs. The pattern of deubiquitinase ubiquitin C-terminal hydrolase-L3 (UCH-L3) expression in GCSCs and GCICs was similar to that of β-catenin expression depending on glucose deprivation. We also observed that inhibition of UCH-L3 activity reduced β-catenin protein levels. The interaction between UCH-L3 and β-catenin proteins was confirmed, and it reduced the ubiquitination of β-catenin. Our results suggest that UCH-L3 induces the stabilization of β-catenin, which is required to promote stemness during autophagy activation. Also, UCH-L3 expression was regulated by c-Fos, and the levels of c-Fos increased in response to autophagy activation. In summary, our findings suggest that the inhibition of UCH-L3 during nutrient deprivation could suppress stress resistance of GCSCs and increase the survival rates of gastric cancer patients.
이지민,Lee, Jimin 한국농촌계획학회 2018 농촌계획 Vol.24 No.3
In countries and regions population plays an important role. Recently the importance of population migration increased as population growth slowed. Researches on population migration are mainly focused on the analysis of the population movement factors and the regional structure analysis using the network analysis method. Analysis of regional structure through population movement is not enough to explain the phenomenon of migration of small cities and rural regions. In this study, to overcome the limit of previous studies the characteristics of the population movement rate according to the size of the population were analyzed. Also network analysis using the population movement OD (Origin and Destination) and population movement rate OD were conducted and the results of them were compared. As the results of analysis by the regional population scale, the population movement by population size showed a big difference in the areas with more than 100 thousand people and less than 100 thousand people. Migration to the outside of the province was the most frequent in regions with 30,000~50,000 people. The population migration rate network analysis result showed that the new area with large population inflow capacity was identified, which could not be found in the population movement network analysis because population movement number is small. The population movement rate irate is expected to be used to identify the central regions of the province and to analyze the difference in resident attractiveness.