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A New Structure and Driving Scheme of PDP for High Luminous Efficacy
Yi, Jeong-Doo,Kim, Joon-Yeon,Chae, Su-Yong,Kim, Tae-Woo,Cho, Sung-Chun,Chun, Byoung-Min,Kim, Jeong-Nam,Cho, Yoon-Hyoung The Korean Infomation Display Society 2004 Journal of information display Vol.5 No.2
We have developed a new PDP cell structure called MARI(Multi Anode for Reduction of Ionic effect) and new driving scheme achieving a high luminous efficacy. The MARI PDP has middle electrode inserted between X and Y main electrodes. In the MARI PDP, reset and scan voltage is applied to middle electrode and sustain voltage is applied to X and Y electrode. Using a long gap sustain discharge we accomplished a high luminous efficacy. And we developed 42"full panel adopting MARI structure and new driving scheme and attained luminous efficacy of 2.35 lm/W.
Kim, Hyoung-Il,Yu, Jae Eun,Lee, Song Yi,Sul, A. Young,Jang, Min Seok,Rashid, M. A.,Park, Sang Gyu,Kim, Sang Jun,Park, Chung-Gyu,Kim, Jae Hyeon,Park, Kyong Soo SAGE Publications 2009 CELL TRANSPLANTATION Vol.18 No.1
<P>Instant blood-mediated inflammatory reaction (IBMIR) causes rapid islet loss in portal vein islet transplantation. Endothelial cells are known to protect against complement-mediated lysis and activation of coagulation. We tested composite pig islet-human endothelial cell grafts as a strategy to overcome IBMIR. Porcine islets were cocultured with human endothelial cells in specially modified culture medium composed of M199 and M200 for 1-9 days. A positive control group, negative control group, and the endothelial cell-coated group were examined with an in vitro tubing loop assay using human blood. The endothelial cell-coated group was subdivided and analyzed by degree of surface coverage by endothelial cells (< or = 50% vs. > 50%) or coculture time (< 5 days vs. > or = 5 days). Platelet consumption and complement and coagulation activation were assessed by platelet count, C3a, and thrombin-antithrombin complex (TAT), respectively. After 60-min incubation in human blood, the endothelial cell-coated group showed platelet consumption inhibition and low C3a and TAT assay results compared to uncoated controls. When the endothelial cell-coated group was subdivided by degree of surface coverage, the < or = 50% coated group showed less platelet consumption and less activation of complement and coagulation compared with the positive control (uncoated) group. On analysis by coculture time, only the subgroup cocultured for < 5 days showed the same protective effect. Human endothelial cell-coated pig islets, especially the partially coated and short-term cocultured pig islet-human endothelial cell composites, reduced all components of IBMIR. If the optimal endothelial cell-islet coculture method could be identified, human endothelial cell coating of pig islets would offer new strategies to improve xenogenic islet transplantation outcomes.</P>
( Loonsuk Yi T ),( Youngsun Jin ),( Min Park ),( Long Hyoung Lee ),( Ttaegu University ),( Kyungpook National University ) 한국감성과학회 2000 춘계학술대회 Vol.2000 No.-
Effectiveness of information conveyance in reading is affected by several factors such as line length, letter size, lines pacing arrangement as well as typeface itself. This study examined relative importance of these factors by asking people to read the texts that was constituted with non-square form letter and rank the preference of texts through conjoint analysis. In the case of reading time, justification was the most important factor, followed by leading, line spacing, letter width, line length, font size, font type in their order of importance. And in the case of preference decision, letter width was the most important factor, followed by font size, justification, line spacing, leading, line length, font type. The result will be useful in understanding how to consider human preference in the Hangul typography.
Metastatic Lymph node in gastric cancer; Is it real distant metastasis? (초)
( Do Hyoung Lim ),( Hyeong Su Kim ),( Young Suk Park ),( Sang Hoon Ji ),( Min Jae Park ),( Seong Yoon Yi ),( Ji Eun Uhm ),( Kyoung Ha Kim ),( Hyo Song Kim ),( Hyun Jung Jun ),( Myung Hee Chang ),( Won 대한내과학회 2008 대한내과학회지 Vol.75 No.1S
Height of elevated fetal buttock for prediction of successful external cephalic version
( Jun Yi Lee ),( Yeorae Kim ),( In Sook Sohn ),( You Jung Han ),( Jin Hoon Chung ),( Moon Young Kim ),( Min Hyoung Kim ),( Hyun-mee Ryu ),( Sunghong Joo ),( Jung Yeol Han ) 대한산부인과학회 2020 Obstetrics & Gynecology Science Vol.63 No.1
Objective To increase the rate of successful external cephalic version (ECV) and to minimize the complications, it is important to identify the predictors of success. Therefore, the purpose of this study was to investigate whether the height of the elevated fetal buttock (HOB) is a valuable predictor of successful ECV or not. Methods This prospective study was conducted from August 2016 to June 2018. A total of 139 pregnant women with breech presentation were enrolled in the study. HOB from the maternal pubic symphysis was measured on ultrasonography. The predictability and cut-off value of HOB for successful ECV were evaluated. Results Among the 139 patients, 114 (82%) had successful ECV. The adjusted odds ratio for multiparity, amniotic fluid index (AFI) >14 cm, and HOB >7.8 cm were 10.80 (95% confidence interval [CI], 1.57-74.94), 5.26 (95% CI, 1.06-26.19), and 10.50 (95% CI, 1.03-107.12), respectively. Areas under the curve (AUCs) for AFI, HOB, and parity were 0.66 (95% CI, 0.54-0.78), 0.74 (95% CI, 0.64-0.85), and 0.69 (95% CI, 0.62-0.76), respectively. HOB had the largest AUC, but there were no significant differences among the AUCs of other factors. The cut-off value of HOB was 6 cm. Conclusion This study showed that the AUC of HOB was greater than that of parity and AFI, although it was not statistically significant. As HOB is a noninvasive and comprehensive marker to predict successful ECV, consideration of HOB would be helpful before conducting ECV. Further studies are needed.
Na, Min-Kyun,Chun, Hyoung-Joon,Bak, Koang-Hum,Yi, Hyeong-Joong,Ryu, Je Il,Han, Myung-Hoon The Korean Neurosurgical Society 2016 Journal of Korean neurosurgical society Vol.59 No.6
Objective : Rheumatoid arthritis (RA) is a systemic disease that can affect the cervical spine, especially the atlantoaxial region. The present study evaluated the risk factors for atlantoaxial subluxation (AAS) development and progression in patients who have undergone surgical treatment. Methods : We retrospectively analyzed the data of 62 patients with RA and surgically treated AAS between 2002 and 2015. Additionally, we identified 62 patients as controls using propensity score matching of sex and age among 12667 RA patients from a rheumatology registry between 2007 and 2015. We extracted patient data, including sex, age at diagnosis, age at surgery, disease duration, radiographic hand joint changes, and history of methotrexate use, and laboratory data, including presence of rheumatoid factor and the C-reactive protein (CRP) level. Results : The mean patient age at diagnosis was 38.0 years. The mean time interval between RA diagnosis and AAS surgery was $13.6{\pm}7.0$ years. The risk factors for surgically treated AAS development were the serum CRP level (p=0.005) and radiographic hand joint erosion (p=0.009). The risk factors for AAS progression were a short time interval between RA diagnosis and radiographic hand joint erosion (p<0.001) and young age at RA diagnosis (p=0.04). Conclusion : The CRP level at RA diagnosis and a short time interval between RA diagnosis and radiographic hand joint erosion might be risk factors for surgically treated AAS development in RA patients. Additionally, a short time interval between RA diagnosis and radiographic hand joint erosion and young age at RA diagnosis might be risk factors for AAS progression.
New Titanium Catalysts Containing Tetrazole for Cycloaddition of CO<sub>2</sub> to Epoxides
Go, Min Jeong,Lee, Kang Mun,Oh, Chang Hwa,Kang, Yi Young,Kim, So Han,Park, Hyoung Ryun,Kim, Youngjo,Lee, Junseong American Chemical Society 2013 Organometallics Vol.32 No.15
<P>A series of new half-sandwich titanocene [(η<SUP>5</SUP>-C<SUB>5</SUB>H<SUB>5</SUB>)Ti<I><B>L</B></I>Cl<SUB>2</SUB>] (<B>1</B>) and nonorganometallic titanium complexes [Ti<I><B>L</B></I>Cl<SUB>3</SUB>(THF)] (<B>2</B>) and [Ti<I><B>L</B></I><SUB>2</SUB>Cl<SUB>2</SUB>] (<B>3</B>) containing 5-(2-hydroxyphenyl)tetrazole (<I><B>L</B>H</I>) were synthesized in high yield and fully characterized by various spectroscopic methods and X-ray crystallography. In all complexes, the ligand <I><B>L</B></I> acted as a monoanionic bidentate ligand and hydrogen bonding between the oxygen of the tetrahydrofuran and hydrogen of the tetrazolyl unit was observed. In the cycloaddition of CO<SUB>2</SUB> to propylene oxide, complex <B>3</B> showed the highest activity among the reported Ti complexes.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/orgnd7/2013/orgnd7.2013.32.issue-15/om400605k/production/images/medium/om-2013-00605k_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/om400605k'>ACS Electronic Supporting Info</A></P>
증례 : 내분비 ; Alpha Lipoic acid와 연관된 인슐린자가면역증후군 1예
장형진 ( Hyoung Jin Chang ),최현숙 ( Hyun Sook Choi ),박미연 ( Mi Youn Park ),임성민 ( Sung Min Leem ),장이선 ( Yi Sun Jang ),박강서 ( Kang Seo Park ),이종민 ( Jong Min Lee ) 대한내과학회 2009 대한내과학회지 Vol.76 No.5
당뇨병으로 경구 혈당 강하제 복용 중에 발생한 저혈당으로 내원한 71세 여자에서 혈청 인슐린 수치와 인슐린자가 항체가 높게 측정되어 인슐린자가면역증후군으로 진단하였다. 약 4주 전부터 sulfhydryl기가 있는 치옥타시드를 복용하였고, HLA 분석결과 인슐린자가면역증후군에서 추출되는 Cw4, DRB1*0406이 나와 확진할 수 있었으며 프레드니솔론 투여로 저혈당 증세는 호전되었다. 이미 당뇨병으로 치료 중인 환자에서는 빈번한 저혈당이 온다고 해도 인슐린자가면역증후군을 고려하기 쉽지 않지만 전 세계적으로 동아시아 지역에서 유병률이 높은 것을 감안하면 이 질환을 염두 해두어야 할 것이다. Insulin autoimmune syndrome is characterized by spontaneous hypoglycemia, high concentrations of serum immunoreactive insulin, and the presence of autoantibodies to insulin without previous insulin injection. A 71-year-old woman with diabetes, who had been treated with oral hypoglycemic agents, suffered from frequent hypoglycemia. High insulin levels and the presence of insulin autoantibodies were shown, so insulin autoimmune syndrome was diagnosed. Drugs containing sulfhydryl groups play an important role in the pathogenesis of insulin autoimmune syndrome. Alpha-lipoic acid, which contains a sulfhydryl group, was administered before the onset of hypoglycemia. The patient`s human leukocyte antigen (HLA) type was HLA-Cw4 and DRB1*0406. There is a strong correlation between HLA-DRB1*0406 and insulin autoimmune syndrome. The patient was treated with prednisolone and has not had a hypoglycemic attack since. We report a case of insulin autoimmune syndrome, possibly associated with alpha-lipoic acid. (Korean J Med 76:600-604, 2009)
Metastatic Lymph node in gastric cancer; Is it real distant metastasis? (초)
( Do Hyoung Lim ),( Hyeong Su Kim ),( Young Suk Park ),( Sang Hoon Ji ),( Min Jae Park ),( Seong Yoon Yi ),( Ji Eun Uhm ),( Kyoung Ha Kim ),( Hyo Song Kim ),( Hyun Jung Jun ),( Myung Hee Chang ),( Won 대한내과학회 2008 대한내과학회 추계학술대회 Vol.2008 No.-