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SOFC anode용 나노구형 Ni<sub>(1-x)</sub>-M<sub>(x=0~0.15)</sub>(M=Co, Fe) alloy 분말 합성 및 그 특성
이민진,최병현,지미정,안용태,홍선기,강영진,황해진,Lee, Min-Jin,Choi, Byung-Hyun,Ji, Mi-Jung,An, Young-Tae,Hong, Sun-Ki,Kang, YoungJin,Hwang, Hae-Jin 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.4
In this study, the reducing agent hydrazine and precipitator NaOH were used with $NiCl_2$ as a starting material in order to compound Ni-based material with spherical nano characteristics; resulting material was used as an anode for SOFC. Synthetic temperature, pH, and solvent amounts were experimentally optimized and the synthesis conditions were confirmed. Also, a 0 ~ 0.15 mole ratio of metal(Co, Fe) was alloyed in order to increase the catalyst activation performance of Ni and finally, spherical nano $Ni_{(1-x)}-M_{(x=0{\sim}0.15)}$(M = Co, Fe) alloy materials were compounded. In order to evaluate the catalyst activation for hydrocarbon fuel, fuel gas(10%/$CH_4$+10%/Air) was added and the responding gas was analyzed with GC(Gas Chromatography). Catalyst activation improvement was confirmed from the 3% hydrogen selectivity and 2.4% methane conversion rate in $Ni_{0.95}-Co_{0.05}$ alloy; those values were 4.4% and 19%, respectively, in $Ni_{0.95}-Fe_{0.05}$ alloy.
증례 : 류마티스 ; 종양괴사인자 억제제 불응 강직성 척추염 환자에서 발생한 아밀로이드증
이민진 ( Min Jin Lee ),이승근 ( Seung Geun Lee ),박은경 ( Eun Kyoung Park ),장선미 ( Sun Mi Jang ),백성민 ( Sung Min Baek ),송근암 ( Geun Am Song ),김근태 ( Geun Tae Kim ) 대한내과학회 2014 대한내과학회지 Vol.87 No.4
Secondary amyloidosis occurs in patients with chronic inflammatory diseases, such as rheumatoid arthritis (RA) and ankylosing spondylitis (AS). The major therapeutic approach to secondary amyloidosis involves controlling the underlying inflammatory disease. Tumor necrosis factor-alpha (TNF-α) inhibitors have revolutionized the treatment of rheumatic diseases; in many cases dramatic clinical improvement of secondary amyloidosis due to AS has been observed in response to treatment with these agents. However, the development of secondary amyloidosis associated with AS refractory to treatment with TNF-α inhibitors has been infrequently reported. Here, we described a case of a 37-year-old male patient with longstanding AS who was diagnosed with secondary amyloidosis due to high disease activity despite treatment with etanercept, adalimumab and infliximab. (Korean J Med 2014;87:514-519)
이민진(Min Jin Lee),김경수(Kyoung Soo Kim),윤정기(Jeong Ki Yoon),김태승(Tae Seung Kim),김종국(Jong Guk Kim) 大韓環境工學會 2009 대한환경공학회지 Vol.31 No.3
본 연구에서는 토양 중 POPs 오염수준을 토지이용형태별로 구분·조사하여 오염특성을 규명하고 효율적인 토양 중 POPs 오염물질 관리방안 마련에 필요한 자료를 제공하였다. 농약류 중 Heptachlor, Aldrin, Endrin, Mirex, Toxaphene이 모든 지역에서 검출되지 않았고 Dieldrin은 N.D.-12.08 ㎍/㎏, Chlordane은 N.D.-16.08 ㎍/㎏, ∑DDT는 N.D.-38.19 ㎍/㎏, HCB는 N.D.-1.32 ㎍/㎏의 범위를 나타냈다. PCBs는 N.D.-172.12 ㎍/㎏의 범위로 절연유오염지역이 높게 나타났으며, PCDD/Fs는 N.D.-6.68 pg I-TEQ/g으로 공단지역이 비교적 높게 나타났다. This study was performed to investigate levels of POPs in soil by land use and identify congener profiles of PCBs, PCDD/Fs in soil in Korea. Heptachlor, Aldrin, Endrin, Mirex, Toxaphene were not found in all areas. The concentrations of Diedrin, Chlordane, ∑DDT, HCB in soil samples were in ranged from N.D. to 12.08 ㎍/㎏, from N.D. to 16.08 ㎍/㎏, from N.D. to 38.19 ㎍/㎏ and from N.D. to 1.32 ㎍/㎏. In case of PCBs, concentration were in ranged from N.D. to 172.12 ㎍/㎏, and PCBs contaminated area was higher than other areas. The concentrations of PCDD/Fs were in ranged from 0 to 6.68 pg I-TEQ/g. In addition, the ∑PCDFs concentration in the industry area soil was higher than ∑PCDDs.
흉부 CT 영상에서 심층 감독 및 하이브리드 병변 초점 손실 함수를 활용한 폐암 분할 개선
이민진(Min Jin Lee),오윤선(Yoon-Seon Oh),홍헬렌(Helen Hong) 한국컴퓨터그래픽스학회 2024 컴퓨터그래픽스학회논문지 Vol.30 No.1
폐암은 크기가 다양하고 유사한 밝기값을 갖는 주변 구조물이 존재하기 때문에 흉부 CT 영상에서 폐암을 정확하게 분할하는 것이 어렵다. 이러한 문제를 해결하기 위해 본 논문에서는 심층 감독을 포함하고 UNet3+를 백본으로 사용하는 폐암 분할 네트워크를 제안한다. 또한, 픽셀 기반, 영역 기반 및 형태 기반의 3가지 구성 요소로 이루어진 하이브리드 병변 초점 손실함수를 제안한다. 이를 통해 배경에 비해 작은 영역을 차지하는 폐암 부분에 집중하고, 불명확한 경계를 처리하는데 도움이 되는 형태 정보를 고려할 수 있다. 제안 방법을 UNet 및 UNet3+와 비교 실험을 통해 검증하였고, 제안 방법은 모든 폐암 크기에서 DSC 측면에서 가장 우수한 성능을 보였다. Lung cancer segmentation in chest CT images is challenging due to the varying sizes of tumors and the presence of surrounding structures with similar intensity values. To address these issues, we propose a lung cancer segmentation network that incorporates deep supervision and utilizes UNet3+ as the backbone. Additionally, we propose a hybrid lesion focal loss function comprising three components: pixel-based, region-based, and shape-based, which allows us to focus on the smaller tumor regions relative to the background and consider shape information for handling ambiguous boundaries. We validate our proposed method through comparative experiments with UNet and UNet3+ and demonstrate that our proposed method achieves superior performance in terms of Dice Similarity Coefficient (DSC) for tumors of all sizes.
스포츠 심리상담사 수련생이 경험하는 상담과정에 관한 현상학적 연구
이민진 ( Min Jin Lee ),김정은 ( Jeong Eun Kim ),박지연 ( Ji Yeon Park ),윤용진 ( Yong Jin Yoon ) 한국스포츠심리학회 2016 한국스포츠심리학회지 Vol.27 No.1
Purpose: this study was to gain a full understanding of the experiences of sports counselor trainees during counseling training. For this purpose, this study explored the experiences and the meaning of counselors’ development. Methods: A phenomenological study was utilized and 6 participants who had several experiences of sports counseling were selected for the study. 3 categories, 8 subcategories, and 24 subjects were derived from in depth interviews and focus group interview. Data were analyzed based on the open coding, axial coding, and selective coding procedure of phenomenological theory. Results: First, trainees were motivated to introduce psychological skills to athletes, at the same time they were worried about immaturity of themselves as counselors. Second, trainees faced the difficulties of reality such as doubts about the effectiveness of counseling, differences between on-site and lectures. Also, trainees should apply different counseling techniques depending on the speciality of sport. Third, trainees grew through a variety of experiences as sport counselors. They preached the importance of sport counseling to the organizations such as professional teams and schools. Conclusion: Trainees developed their skills and professional counseling abilities through their training. This research may be used as basic data for counselors to adapt to sports setting, and to achieve better and professional counseling.
사무공간의 사용자 행위별 형광램프와 LED조명 감성비교 실험에 관한 연구
이민진(Min-Jin Lee) 한국조명·전기설비학회 2012 조명·전기설비학회논문지 Vol.26 No.8
Unlike traditional lightings, LED lighting is one of objects that sends user an emotional segments through brightness control from various color temperature and dimming control. Also, within present interior lighting environment, emotional researches about traditional fluorescent lamp and newly implemented LED lighting environment are in active progress. Despite the fact adjectives describing emotions and scale modeling have been repeatedly used in many cases for a long time, there seems to be a lack of results in reliability, and there is a limitation for applying into actual lighting design. The purpose of this study is to construct an actual sized test-bed, which is used to draw out one’s emotional words of behavior patterns from inner emotional experiences about lighting environment in an office space. Also, having fluorescent lamp and LED lighting as the main test subjects, we have tested emotional parts according to the changes of color temperature and adjective vocabularies chosen from user’s action, and we have compared and analyzed the drawn out data. Also, having fluorescent lamp and LED lighting as the main test subjects, we have tested emotional parts according to the changes of color temperature and adjective vocabularies chosen from user’s action, and we have compared and analyzed the drawn out data.