http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
MIS型 Al/p-Si 太陽電池의 製作과 特性에 관한 硏究
손련규,노경석 安東大學 1987 安東大學 論文集 Vol.9 No.1
The fabrication procedure and properties of the Al/p-Si MIS solar ceil was developed to the photo-lithography and anti-reflective coating method. The optimum temperature for oxide growing of Al/p-Si solar cells was found to be about 450℃ for 20 minutes oxygen flow time. The best results showed that V_(oc)=0.52V, J_(sc)=23.5mA, and FF=0.65, which represent that the conversion efficiency is 11% at the cell area 0.722㎠.
Mg₂SiO₄ : La, Ho 열형광선량계에서 활성제 농도가 글로우 커브에 미치는 영향 La, Ho TLD on Activation Concentration
김영국,손인호,채건식,노경석,오재근,이은숙 경남대학교 신소재연구소 1996 論文集 Vol.6 No.-
본 연구에서는 Mg₂SiO₄에 활성화 물질로 La, Ho를 첨가하여 열형광체를 제작하였고 불순물의 농도를 1wt.% ∼5 wt.%까지 변화시키면서 열평광강도의 glow curve를 측정하였다. 도한 열형광체의 glow curve를 peak shape법으로 분석해서 TL특성에 대한 포획 매개변수와 활성화 에너지, 발광차수, 선량의존성등을 조사하였으며, 그 물리적 특성을 조사하고 선량계로서 타당성과 실용성을 확인하였다. The Mg₂SiO₄: La, Ho thermoluminescent phospher has been prepared by sintring Mg₂SiO₄after doping the transition elements La and Ho. The heating rate is 10℃/sec at this thermoluminescent phospher are heated. The maximum peaks are found in the measured Mg₂SiO₄: La and Ho. TL glow curve at 229℃ and 345 C when the 1 wt.%-5 wt.%. The glow curve of TLD increased TL intensity and temperature of peak appears to the high temperature when the heating rate is l0℃/sec-25℃/sec. The activation energy of the main peak has been estimated by the peak shape method. The estimated activation energies are 1.77 eV. 1.52 eV respectively. The thermoluminescence process in Mg₂SiO₄: La and Ho are found to the 2nd order when the main peak of the glow curve is analyzed by peak shape method. The dose responses of Mg₂SiO₄: La and Ho TLD are linear up to intensity of X-ray.
Open New Horizon with L4 Mission: Vision and Planning
Kyung-Suk Cho(조경석),Junga Hwang(황정아),Jeong-Yeol Han(한정열),Seonghwan Choi(최성환),Eun-Kyung Lim(임은경),Jungjoon Seough(서정준),Rok-Soon Kim(김록순),Sung-Hong Park(박성홍),Jongdae Sohn(손종대),Jie-Hae Back(백지혜),Young-Jae 한국항공우주학회 2023 한국항공우주학회 학술발표회 논문집 Vol.2023 No.6
Sohn Suk Ho,Kim Kyung Hwan,Kang Yoonjin,Choi Jae Woong,Lee Seung Hyun,Shinn Sung Ho,Lim Cheong,Sung Kiick,Yoo Jae Suk,Choo Suk Jung 대한의학회 2023 Journal of Korean medical science Vol.38 No.48
Background: In the era of transcatheter aortic valve implantation, this study was conducted to investigate the current trend of aortic valve procedures in Korea and to evaluate the early and mid-term outcomes of isolated surgical aortic valve replacement (SAVR) using bioprosthetic valves in contemporary Korea. Methods: Contemporary outcomes of isolated bioprosthetic SAVR in Korea were analyzed using the datasets on a multicenter basis. Patients who underwent isolated SAVR using bioprostheses from June 2015 to May 2019 were included, and those with concomitant cardiac procedures, SAVR with mechanical valve, or SAVR for infective endocarditis were excluded. A total of 456 patients from 4 large-volume centers were enrolled in this study. Median follow-up duration was 43.4 months. Early postoperative outcomes, mid-term clinical outcomes, and echocardiographic outcomes were evaluated. Results: Mean age of the patients was 73.1 ± 7.3 years, and EuroSCORE II was 2.23 ± 2.09. The cardiopulmonary bypass time and aortic cross-clamp times were median 106 and 76 minutes, respectively. SAVR was performed with full median sternotomy (81.8%), right thoracotomy (14.7%), or partial sternotomy (3.5%). Operative mortality was 1.8%. The incidences of stroke and permanent pacemaker implantation were 1.1% and 1.1%, respectively. Paravalvular regurgitation ≥ mild was detected in 2.6% of the patients. Cumulative incidence of all-cause mortality at 5 years was 13.0%. Cumulative incidences of cardiovascular mortality and bioprosthetic valve dysfunction at 5 years were 7.6% and 6.8%, respectively. Conclusion: The most recent data for isolated SAVR using bioprostheses in Korea resulted in excellent early and mid-term outcomes in a multicenter study.
Comparison of genetic stability of transgenic rice in large-scale GM crop field
Hyun-Suk Lee,Min-Gyu Kim,Jae-Keun Sohn,Kyung-Min Kim 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
The significance of genetic stability and bio-safety environment has been recently recognized by many GM plants. This study was to evaluate the GM stability of transgenic rice and to identify the environment variance. The GM rice of vitamin A -enriched rice and four check cultivars were analyzed the data on agronomic characters and principal component for 2009-2011 in large-GM crop field. Cultivation environment was conducted in the large-GM field and greenhouse to determine grain characters. In this experiment, there was no significant difference in agronomic characters between GM rice of vitamin A-enriched rice and a donor plant, Nagdong. Related to grain characters, grain appearance and physicochemical characteristics were similar to GM rice of vitamin A-enriched rice and a donor plant, Nagdong. However, grain appearance in GM rice of vitamin A-enriched rice showed to white core and white belly when GM rice of vitamin A-enriched rice was planted in greenhouse. The type and distribution of dominant weed species also were not different from GM rice of vitamin A-enriched rice and a donor plant, Nagdong. Additionally that of gene flow was not detected in dominant weed species by PCR analysis.
Sohn, Mun-Gu,Yoo, Yoon-Jae,Rou, Kyung-Suk 경북대학교 과학교육연구소 1985 科學敎育硏究誌 Vol.9 No.-
1973年 Ortiz, A.H는 K-primitive 環과 H-primitive 環을 定義하였으며, 이후 Kezlan, T.P 들에 의하여 K-primitive 環의 기본적인 성질들이 硏究되어 왔다. 本 論文에서는 H-primitive 環에 대한 Ortiz의 定義에 따라 調査 硏究한 결과로서 " Prime 環R이 H-primitive 되는 것과 R이 (O:Ⅰ)=R인 성질에 대해서 最小인 right ideal Ⅰ를 包含하는 것이 同値 " 됨을 밝혔고 또 부수되는 여러 성질들을 구하였다.
Anti-angiogenic activity of triterpene acids
Sohn, Kyung-Hee,Lee, Ho-Young,Chung, Hae-Young,Young, Han-Suk,Yi, Seh-Yoon,Kim, Kyu-Won 부산대학교 유전공학연구소 1995 분자생물학 연구보 Vol.11 No.-
Ursolic acid (US) and oleanolic acid (OA) were examined for anti-angiogenic activities by using the chick embryo chorioallantoic membrane (CAM) assay. The presence of UA or OA inhibited angiogenesis in a dose-dependent manner, the doses required for half-maximal inhibition (ID_50) were 5 ㎍ and 40 ㎍ per CAM, respectiviely. UA was a more potent angiogenic inhibitor than OA. We also tested for inhibitory effect on the proliferation of bovine aortic endothelial cell. They effectively inhibited the proliferation of bovine aortic endothelial cell in a concentration-dependent manner. The IC_50 values of anti-proliferative effects were determined to be 5 μM for UA and 20 μM for OA. Based on these results, we speculated that the inhibitory effects on bovine aortic endothelial cell proliferation of UA and OA might be important for anti-angiogenesis.