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Superconductivity in the cuprates： Deduction of mechanism for d-wave pairing through analysis of ARPES

Frontiers of physics 2011年第4期6卷 440-449页

作者： han-yong choi Chandra M. Varma Xing-jiang Zhou Department of Physics and Institute for Basic Science Research Sung Kyun Kwan University Suwon 440-746 Korea Department of Physics and Astronomy University of California Riverside California 92521 USA National Laboratory for Superconductivity Institute of Physics Chinese Academy of Sciences Beijing 100190 China

In the Eliashberg integral equations for d-wave superconductivity, two different functions （α2F）n（ω, θ） and （α2F）p,d（ω） determine, respectively, the ＂normal＂ self-energy and the ＂pairing＂ self-energy, w is the frequency of fluctuations scattering the fermions whose momentum is near the Fermi-surface and makes an angle θ to a chosen axis. We present a quantitative analysis of the high-resolution laser based Angle Resolved Photoemission Spectroscopy （ARPES） data on a slightly under doped cuprate compound Bi2212 and use the Eliashberg equations to deduce the w and dependence of （α2F）n（ω, θ） for T just above Tc and below Tc. Besides its detailed w dependence, we find the remarkable result that this function is nearly independent of θ between the （π; π）-direction and 25 degrees from it, except for the dependence of the cut-off energy on 8. Assuming that the same fluctuations determine both the normal and the pairing self-energy, we ask what theories give the function （α2F）p,d（ω） required for the d-wave pairing instability at high temperatures as well as the deduced （α2F）n（θ, w）. We show that the deduced （α2F）n（θ, w） can only be obtained from antiferromagnetic （AFM） fluctuations if their correlation length is smaller than a lattice constant. Using （α2F）p,d（W） consistent with such a correlation length and the symmetry of matrix-elements scatter- ing fermions by AFM fluctuations, we calculate Tc and show that AFM fluctuations are excluded as the pairing mechanism for d-wave superconductivity in cuprates. We also consider the quantumcritical fluctuations derived microscopically as the fluctuations of the observed loop-current order discovered in the under-doped cuprates, and which lead to the marginal Fermi-liquid properties in the normal state. We show that their frequency dependence and the momentum dependence of their matrix-elements to scatter fermions are consistent with the θ and w dependence of the deduced （α2F）n（ω, θ）. The pairing kernel （α2F）p,d（W） calculated using

关键词： high temperature superconductivity mechanisms of superconductivity

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Mutation of MED12 is not a frequent occurrence in prostate cancer of Korean patients

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Asian Journal of Andrology 2017年第3期19卷 346-349页

作者： Nara Yoon Sharon Lim So Young Kang Ghee Young Kwon Hwang Gyun Jeon Byong Chang Jeong Seong Il Seo Seong Soo Jeon Hyun Moo Lee han yong choi Department of Pathology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul 135-710 Korea Department of Urology Samsung Medical Center Sungkyunkwan University School of Medicine Seoul 135-710 Korea

Prostate cancer is one of the major health care problems, but the molecular pathogenesis has been relatively insufficiently elucidated. Recently, whole exome sequencing of prostate cancer identified recurrent mutations involving MED12 in Caucasian patients, which finding was not reproduced in one subsequent study by Sanger sequencing. Thus, we investigated mutation status of MED12 in exons 2 and 26 by Sanger sequencing in 102 radical prostatectomy cases from Korean patients. The analysis found the mutation in none of the cases. Therefore, MED12 mutation does not appear to represent a significant molecular alteration in this cohort of patients according to the analysis by the traditional ＂gold standard.＂

关键词： mediator complex subunit 12 mutation analysis prostate cancer prostate neoplasms

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Incidence and Predictive Factors of Benign Renal Lesions for Presumed Renal Cell Carcinoma on Preoperative Imaging in Korean Patients

Incidence and Predictive Factors of Benign Renal Lesions for...

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第十七届全国泌尿外科学术会议

作者： Seo yong Park han yong choi Hyun Moo Lee Department of Urology Samsung Medical CenterSungkyunkwan University School of Medicine

Purpose To determine the incidence of benign r enal lesions in Korean patients undergoing nephrectomy for assumed renal cell carcinoma (RCC) on preoperative imaging and to investigate clinical predictors for benign re... 详细信息

关键词： Kidney Neoplasms Pathology Renal cell carcinoma Incidence

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Detection rate of clinically insignificant prostate cancer ncreases with repeat prostate biopsies

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Asian Journal of Andrology 2013年第2期15卷 236-240,I0007页

作者： Bumsoo Park Seong-Soo Jeon Sung-Ho Ju Byong-Chang Jeong Seong-II Seo Hyun-Moo Lee han-yong choi Department of Urology Sungkyunkwan University School of Medicine Seoul 135-710 Korea institute for Refractory Cancer Research Samsung Medical Center Sungkyunkwan University School of Medicine Seou1135-710 Korea Department of Urology Kangnam General Hospital Yongin 446-597 Korea

To analyze if clinically insignificant prostate cancer （CIPC） is more frequently detected with repeat prostate biopsies, we retrospectively analyzed the records of 2146 men diagnosed with prostate cancer after one or more prostate biopsies. The patients were divided into five groups according to the number of prostate biopsies obtained, e.g, group I had one biopsy, group 2 had two biopsies and group 3 had three biopsies. Of the 2146 patients diagnosed with prostate cancer, 1956 （91,1%）, 142 （6.6%）, 38 （1.8%）, 9 （0.4%） and 1 （0.1%） men were in groups 1, 2, 3, 4 and 5, respectively. Groups 4 and 5 were excluded because of the small sample sizes. The remaining three groups （groups 1, 2 and 3） were statistically analyzed. There were no differences in age or prostate-specific antigen level among the three groups. CIPC was detected in 201 （10.3%）, 28 （19.7%） and 9 （23.7%） patients in groups 1, 2 and 3, respectively （P〈O.O01）. A multivariate analysis showed that the number of biopsies was an independent predictor to detect ClPC （0R=2.688 for group 2; 0R=4.723 for group 3）. In conclusion, patients undergoing multiple prostate biopsies are more likely to be diagnosed with CIPC than those who only undergo one biopsy. However, the risk still exists that the patient could have clinically significant prostate cancer. Therefore, when counseling patients with regard to serial repeat biopsies, the possibility of prostate cancer overdiagnosis and overtreatment must be balanced with the continued risk of clinically significant disease.

关键词： clinically insignificant prostate cancer (CIPC) clinically significant prostate cancer (CSPC) biopsy early detection ofcancer prostatic neoplasms

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Impact of Warm Ischemia during Partial Nephrectomy under Pneumoperitoneum on Recovery of Renal Function Prospective 1 year outcome

Impact of Warm Ischemia during Partial Nephrectomy under Pne...

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第十七届全国泌尿外科学术会议

作者： Seong Soo Jeon Seo yong Park Jae Duck choi Byong Chang Jeong Seong Il Seo han yong choi Purpose To identify the effects of the warm ischemic time (WIT) on the recovery of renal

Purpose To identify the effects of the warm ischemic time(WIT) on the recovery of renal function after partial nephrectomy under the pneumoperitoneum. Materials and methods Thirty seven consecutive patients underwent ...

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Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang Zhang Changhua Wang Chung Hsien Wu Jiwen Jiang Fei Long Liyuan han Qifeng han Yi‑Bing Cheng yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination

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Asymptotic Results for Random Processes

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Acta Mathematicae Applicatae Sinica 2017年第2期33卷 363-372页

作者： HEE-JIN MOON ChanG-HO han yong-KAB choi Department of Mathematics and RINS Gyeongsang National University Jinju 660-701 South Korea

In this paper we establish asymptotic results and a generalized uniform law of the iterated logarithm （LIL） for the increments of a strictly stationary random process, whose results are proved by separating linearly positive quadrant dependent （LPQD） random process and linearly negative quadrant dependent （LNQD） one, respectively.

关键词： quadrant dependence stationary random process law of the iterated logarithm

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Implementation procedure for the generalized moving Preisach model based on a first order reversal curve diagram

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Rare Metals 2009年第4期28卷 355-360页

作者： han yong ZHU Jie State Key laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

First order reversal curves （FORC） of nanocomposite Nd2Fe14B/Fe3B magnetic materials were measured to attain a FORC diagram, which characterizes reversible magnetization, irreversible magnetization, and magnetic interactions in a hysteresis system. Then, generalized mov- ing Preisach model （GMPM） was implemented based on the FORC diagram. Reversible and irreversible magnetizations shown in FORCs and a FORC diagram were used as an input of GMPM. Coupling interaction between reversible and irreversible magnetizations was added when calculating reversible magnetization. Meanwhile, irreversible magnetic moments＇ interaction was approximately represented by mean field interaction. The result shows that the simulated main curves mostly coincide with the experimental curves.

关键词： FORC diagram Preisach model reversible magnetization irreversible magnetization magnetic interactions

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Advanced metal–organic frameworks for aqueous sodium-ion rechargeable batteries

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Journal of Energy Chemistry 2021年第2期30卷 396-406,I0014页

作者： Dongkyu choi Seonguk Lim Dongwook han School of Nano Convergence Technology Hallym UniversityChuncheon 24252Gangwon-doRepublic of Korea Nano Convergence Technology Center Hallym UniversityChuncheon 24252Gangwon-doRepublic of Korea

Inexpensive and abundant sodium resources make energy storage systems using sodium chemistry promising replacements for typical lithium-ion rechargeable batteries(LIBs).Fortuitously,aqueous sodium-ion rechargeable batteries(ASIBs),which operate in aqueous electrolytes,are cheaper,safer,and more ionically conductive than batteries that operate in conventional organic electrolytes;furthermore,they are suitable for grid-scale energy storage *** electrode materials for storing Na~+ ions in ASIBs,a variety of multifunctional metal-organic frameworks(MOFs) have demonstrated great potential in terms of having porous 3 D crystal structures,compatibility with aqueous solutions,long cycle lives(≥1000 cycles),and ease of *** present review describes MOF-derived technologies for the successful application of MOFs to ASIBs and suggests future challenges in this area of research based on the current understanding.

关键词： Metal–Organic Framework(MOF) Prussian blue Metal hexacyanoferrate Aqueous electrolyte Sodium-ion Rechargeable battery

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Comparison of the meibomian gland dysfunction in patients with chronic ocular graft-versus-host disease and Sjogren's syndrome

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International Journal of Ophthalmology(English edition) 2019年第3期12卷 393-400页

作者： Won choi Jun Young Ha Ying Li Jung han choi yong Sok Ji Kyung Chul Yoon Department of Ophthalmology and Research Institute of Medical Sciences Chonnam National University Medical School and Hospital

AIM: To investigate the abnormalities in the meibomian gland in patients with dry eye disease(DED) associated with chronic ocular graft-versus-host disease(coGVHD) in comparison with Sj?gren's syndrome(SS), a major form of aqueous deficient DED and meibomian gland dysfunction(MGD), a common cause of evaporative ***: A total 135 eyes of 135 subjects included in this study: patients with DED associated with coGVHD(n=30), patients with SS(n=35), patients with MGD(n=35), and normal controls(n=35). All participants completed the Ocular Surface Disease Index(OSDI) questionnaire, ocular surface examination [Schirmer test, tear film breakup time(TFBUT), and ocular surface staining], and meibomian gland assessment [meiboscore(gland dropout detected on meibography using infrared camera of the Keratograph 5 M), meibum expressibility score(MES), meibum quality score(MQS), lid margin abnormality]. In addition, correlations of meibomian gland characteristics with ocular surface parameters as well as disease severity score were investigated in coGVHD ***: The coGVHD group showed significantly higher meiboscore, MES, and MQS than the other 3 groups(all Phan other types of DED. In addition, meibomian gland damage is not only associated with ocular surface damage but also disease severity of coGVHD.

关键词： chronic ocular graft-versus-host disease Sjogren's syndrome dry eye disease meibomian gland dysfunction meibography

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