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Gd<sub>2</sub>O<sub>3</sub> 첨가에 따른 AC PDP 보호막용 MgO 박막의 광학적.전기적 특성
김창일,임은경,박용준,이영진,백종후,최은하,정석,김정석,Kim, Chang-Il,Lim, Eun-Kyeong,Park, Young-Jun,Lee, Young-Jin,Paik, Jong-Hoo,Choi, Eun-Ha,Juang, Seok,Kim, Jeong-Seok 한국전기전자재료학회 2007 전기전자재료학회논문지 Vol.20 No.7
The effects of $Gd_2O_3$ addition and sintering condition on optical and electrical properties of MgO films as a protective layer for AC plasma display panels were investigated. Doped MgO films prepared by the e-beam evaporation have a higher ${\Upsilon}$ (secondary electron emission coefficient) than pure MgO protective layer. Relative density and grain size increased with amount of $Gd_2O_3$ up to 100 ppm and then decreased further addition. These results showed that discharge properties and optical properties of MgO protective layers seemed to be closely related with microstructure factors such as relative density and grain size. Good optical and electrical properties of ${\Upsilon}$ of 0.138, surface roughness of 5.77 nm and optical transmittance of 95.76 % were obtained for the MgO+100 ppm $Gd_2O_3$ protective layer sintered at $1700^{\circ}C$ for 5 hrs.
김정인(Kim Jung-In),김성국(Kim Sung-Kook),정태욱(Jung Tae-Wook),곽도연(Kwak Do-Yeon),김기영(Kim Ki-Young),고지연(Ko Jee-Yeon),우관식(Woo Koan-Sik),송석보(Song Seok-Bo),오인석(Oh In-Seok),최명은(Choe Myeong-Eun) 한국육종학회 2017 한국육종학회지 Vol.49 No.1
The sorghum (Sorghum bicolor (L.) Moench) variety ‘Sodamchal’ was developed and registered by Department of Sothern Area Crop Science, National Institute of Crop Science (NICS) in 2013. This variety was developed from the cross between ‘Hwanggeumchal’ with brown grain and ’Jungmo4001’ with semi-dwarf trait. ‘Sodamchal’ is the first semi-dwarf stature with waxy endosperm ever developed in Korea. The yield performance of ‘Sodamchal’ was 2.95 MT/ha in local adaptability test for 2 years. It had 91 cm culm length, which was 58 cm shorter than that of ‘Hwanggeumchal’, 26.3 cm panicle length, 22.0 mm thickness of culm, 21.1 g in 1,000 grain weight. It could be reduce the lodging problem and also adapted to mechanized cultivation. ‘Sodamchal’ produces high quantities of polyphenol and radical scavenging activitiy with diphenyl-picrylhydrazyl (DPPH), 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) in pigmented testa. Above all ‘Sodamchal’ is suitable for use as a parental source for the development of improved pollinator parent lines for developing semi-dwarf sorghum with waxy endosperm and antioxidant activity. (Variety registration No. 6244)
김우현 ( Woo Hyeon Kim ),이인석 ( In Seok Lee ),김은영 ( Eun Young Kim ),임철현 ( Chul-hyun Lim ),김진수 ( Jin Su Kim ),조유경 ( Yu Kyung Cho ),박재명 ( Jae Myung Park ),최명규 ( Myung-gyu Choi ) 대한췌담도학회 2016 대한췌담도학회지 Vol.21 No.3
췌장의 파골세포양 거대세포 미분화 암종은 그 발생 빈도는 드물지만 높은 악성도를 가지는 외분비 췌장암이다. 췌장의 파골세포양 거대세포 미분화 암종은, 복부 전산화단층촬영에서 괴사와 출혈을 동반한 낭성 및 고형 종괴의 소견을보이며, 다른 췌장의 낭성 종양과 감별이 필요하다. 현재까지 명확하게 정립된 치료법은 없으며, 조기 진단 및 종양의 완전 절제만이 생존률 향상을 가져온다고 보고되고 있다. 본증례는 58세 남성 환자에서 발생한 췌장의 파골세포양 거대세포 미분화 암종이 수술 및 항암치료에도 불구하고 연조직전이로 진행하여 사망한 1예로 문헌고찰과 함께 보고한다. Undifferentiated carcinoma of the pancreas with osteoclast-like giant cells (UCPOGC) is a rare, highly malignant pancreatic exocrine neoplasm. Here, we report a case of UCPOGC in a 58-year-old man who presented with abdominal pain and weight loss. Abdomen computed tomography (CT) revealed a 5cm sized pancreatic body mass with peripheral enhancement. Endoscopic ultrasound (EUS)-guided biopsy of the mass suggested a solid-pseudopapillary tumor of the pancreas with a marked degenerative change. Distal pancreatectomy and splenectomy were performed. The size of the mass was 5.4 × 4.8 cm and the cut surface showed necrosis and hemorrhage. A definite diagnosis of UCPOGC was made using the histopathology and immunohistochemical findings. Korean J Pancreas Biliary Tract 2016;21(3):144-149
건강한 한국인 성인 남자에서 성호르몬과 대사증후군과의 연관성
김석 ( Seok Kim ),이은정 ( Eun Jung Rhee ),석효선 ( Hyo Sun Seok ),최영길 ( Young Gil Choi ),정원길 ( Won Gil Chung ),이도영 ( Do Young Lee ),김세연 ( Se Yeon Kim ),정찬희 ( Chan Hee Jung ),박철영 ( Cheol Young Park ),이원영 ( Wo 대한내과학회 2007 대한내과학회지 Vol.73 No.6
목적: 여러 연구에서 남성호르몬의 감소가 제2형 당뇨병, 인슐린저항성, 고인슐린 혈증, 이상지질혈증, 대사증후군과 관련이 있다고 보고되었다. 그러나 아직까지 국내에서는 남성호르몬과 심혈관계에 위험인자로 알려진 이상지질혈증, 인슐린저항성과 대사증후군 등에 대한 연구가 부족한 실정이다. 본 연구는 한국인 성인 남성에서 성호르몬 농도와 대사증후의 연관성에 대해 알아보기 위해 시행되었다. 방법: 2003년 6월부터 2003년 7월까지 강북삼성병원검진센터에서 건강 검진을 받은 289명의 성인 남성을 대상으로 하였다. 연구는 검진센터에서 기록된 자료를 기초로 하였고, 수정된 국제 콜레스테롤 교육 프로그램 성인치료 패널 III 기준에 근거하여 대사증후군을 정의하였다. 혈중 총 테스토스테론 농도는 방사면역 측정법을 이용해서 측정하였고, 혈중 성호르몬 결합글로불린은 면역방사계측정법을 이용해서 측정하였다. 결과: 총 대상군에서 대사증후군의 유병율은 15.6%였고, 건강한 남성에서 연령과 체질량지수를 보정한 후에 총 테스토스테론의 농도는 고밀도 지단백 콜레스테롤, 공복 인슐린, 요산과 상관관계를 보였으며, 성호르몬 결합글로불린은 이완기 혈압, 요산, 중성지방, 공복 인슐린, 인슐린저항성 지표와 상관관계를 보였다. 나이, 흡연력, 음주력과의 상호작용을 통제한 후에도 총 테스토스테론과 성호르몬 결합글로불린의 감소와 에스트라디올의 증가는 대사증후군의 유병율과 유의한 상관관계를 보였다. 결론: 건강한 한국인 성인 남성에서의 성호르몬 결합글로불린의 감소와 에스트라디올의 증가는 대사증후군에 유병율에 유의한 영향을 미쳤고 이상지질혈증에도 관련이 있었다. 앞으로 테스토스테론 보충 요법 후의 여러 대사 지표들의 변화에 대한 연구도 흥미로울 것으로 생각된다. Background: Recent studies report an association of decreased testosterone levels with type 2 diabetes mellitus, insulin resistance, hyperinsulinemia, dyslipidemia and metabolic syndrome. However, studies on correlations of testosterone with dyslipidemia, insulin resistance and metabolic syndrome in Koreans are scarce. We analyzed the relationship between levels of sex hormones and metabolic syndrome, lipid profiles and insulin resistance in Korean adult males. Methods: A total of 289 males were selected among the participants in a medical health check-up from June to July 2003 at Kangbuk Samsung Hospital Health Promotion Center. Metabolic syndrome was defined according to the Modified National Cholesterol Education Program-Adult Treatment Panel (NCEP-ATP) III. The serum total testosterone level was measured using a radioimmunoassay and sex hormone binding globulin (SHBG) was measured using a radioimmunometric assay. Results: The prevalence of metabolic syndrome was 15.6% and the total testosterone level showed a significant correlation with the levels of high-density lipoprotein cholesterol, fasting insulin, and uric acid even after adjustment for age and body mass index (BMI). Serum SHBG showed a significant correlation with diastolic blood pressure, uric acid, triglyceride, fasting insulin and insulin resistance indices. In logistic regression analysis in which age, drinking history, and smoking status were adjusted, decreased total testosterone and SHBG levels as well as increased estradiol levels showed significant correlations with an increased prevalence of metabolic syndrome. Conclusion: This study shows that decreased total testosterone and SHBG levels and an increased estradiol level were significantly correlated with increased metabolic syndrome prevalence and dyslipidemia in healthy Korean male adults. Further studies are suggested for the association of sex hormone replacement and the changes in the metabolic status. (Korean J Med 73:565-574, 2007)