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Effect of Cadherin-11 Expression on the Prognosis of a Newly Diagnosed Primary Glioblastoma
( Hyunwoo Seo ),( Hye Won Lee ),( Sang-youl Yoon ),( Sung Hyun Chang ),( Seong-hyun Park ),( Jeong-hyun Hwang ),( Tae In Park ),( Ki-su Park ) 대한뇌종양학회 대한신경종양학회 2021 Brain Tumor Research and Treatment Vol.9 No.2
Background Cadherin-11, a cell-to-cell adhesion molecule, is associated with higher tumor grade and decreased patient survival. The purpose of this study was to investigate the clinical significance of cadherin-11 expression in the progression and prognosis of a newly diagnosed primary glioblastoma (GBL). Methods Between 2007 and 2016, 52 out of 178 patients diagnosed with a GBL and satisfied the following criteria: 1) a new primary GBL, 2) gross-total resection, 3) immunohistochemically-available tissue, and 4) standardized adjuvant treatment. Results In terms of staining intensity, the low-intensity cadherin-11 group showed longer progression- free survival (PFS) than the high-intensity cadherin-11 group (median PFS, 12.0 months [95% CI, 11.1-12.9] vs. median PFS, 6.0 months [95% CI, 3.7-8.3]; p<0.001). The low-intensity cadherin-11 group revealed longer overall survival (OS) than the high-intensity cadherin-11 group (median OS, 20.0 months [95% CI, 11.8-16.6] vs. median OS, 15.0 months [95% CI, 11.8-18.2]; p=0.003). The staining intensity of cadherin-11 was a statistically significant factor in PFS and OS in terms of univariate and multivariate analyses (univariate analysis: p<0.001 and p=0.005; multivariate analysis: p<0.001 and p=0.005). Conclusion Our clinical study demonstrates high cadherin-11 expression may be associated with poor PFS and OS for a newly diagnosed primary GBL.
Stereoselective Chiral Recognition of Amino Alcohols with 2,2′-Dihydroxybenzil
Seo, Min-Seob,Sun, Daeyoung,Kim, Hyunwoo American Chemical Society 2017 Journal of organic chemistry Vol.82 No.13
<P>2,2'-Dihydroxybenzil is demonstrated to be a highly diastereoselective stereodynamic receptor for the chiral recognition of amino alcohols. The receptor by forming diimine compounds with amino alcohols showed good (11:1) to excellent (>50:1) diastereoselectivity in chloroform. The existence of intramolecular hydrogen bonding with amino alcohols only in an axial conformer is demonstrated by H-1 NMR and CD spectroscopy, X-ray crystallography, and DFT computations. The exciton chirality method can be used with diazo-attached 2,2'-dihydroxybenzil.</P>
Controlling helical chirality of cobalt complexes by chirality transfer from vicinal diamines
Seo, Min-Seob,Kim, Kiseong,Kim, Hyunwoo The Royal Society of Chemistry 2013 Chemical communications Vol.49 No.99
<P>Stereoselective <I>cis</I>–<I>trans</I> isomerism of a Co<SUP>III</SUP>–N<SUB>2</SUB>O<SUB>2</SUB> complex has been achieved by coordinating chiral vicinal diamines. The induced metal-centered helical chirality can be exploited for chirality amplification and asymmetric coordination chemistry.</P> <P>Graphic Abstract</P><P>The helical chirality of a cobalt–N<SUB>2</SUB>O<SUB>2</SUB> complex transferred from vicinal diamine can be conserved when achiral bipyridine replaces the vicinal diamine. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c3cc46887a'> </P>
2,2′-Dihydroxybenzil: A Stereodynamic Probe for Primary Amines Controlled by Steric Strain
Seo, Min-Seob,Lee, Ansoo,Kim, Hyunwoo American Chemical Society 2014 ORGANIC LETTERS Vol.16 No.11
<P>A rational approach for generating 1,1′-binaphthalene-like axial chirality of a small organic receptor, 2,2′-dihydroxybenzil is presented. The receptor combines with 2 equiv of monodentate primary amines to form a diimine, of which axial chirality is controlled by steric strain with moderate (1.4:1) to good (4.7:1) stereoselectivity. The observed circular dichroism (CD) spectra have been closely simulated by TD-DFT computations and can be used for determining the absolute chirality and enantiomeric excess of primary amines.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/orlef7/2014/orlef7.2014.16.issue-11/ol501088v/production/images/medium/ol-2014-01088v_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ol501088v'>ACS Electronic Supporting Info</A></P>
Hyunwoo Song,Yeongsang Lee,Gab-Su Seo,Dongjun Won 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-
Abnormal climates due to global warming have emerged as a big concern in the global community. To mitigate climate change and achieve sustainability, distributed energy resources (DERs), including solar and wind, have been recently deployed in power systems. As the penetration level of DERs has increased, however, it caused a multitude of issues in the power systems, such as voltage fluctuation in the distribution network limiting renewable hosting capacity. On the other hand, the electric vehicle (EV) industry is rapidly growing to facilitate the transition to a carbon-neutral community, illuminating the potential of EVs as a flexible grid asset to mitigate some of the issues and improve grid operation, if properly exploited. To explore the potential of EVs, this paper proposes an EV scheduling strategy. By using an optimal EV charging scheduling proposed, distribution system operators (DSOs) can minimize their operating costs and stably operate the system with a high level of DERs. To validate the method, a modified IEEE 33-bus system with DERs is developed. The case study shows the proposed scheduling strategizes EV charging to reduce the cost of PV curtailment. In the study, the method outperforms the renewable-only case with curtailment by 4.97% in DSO cost. It also demonstrates its potential to increase the renewable hosting capacity by harmonizing EV charging with renewables.