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Statistical Cluster-QSO Weak Lensing in the Sloan Digital Sky Survey

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Chinese Journal of Astronomy and Astrophysics 2006年第5期6卷 521-529页

作者： Zhong-Lue Wen Yan-Bin Yang Xu Zhou Qi-rong yuan Jun Ma National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 Department of Physics Nanjing Normal University Nanjing 210097

We investigate the cross-correlation between galaxy clusters and QSOs using Sloan Digital Sky Survey （SDSS） DR4 - 5000 deg^2 data. With photometric redshifts of galaxies, we select galaxy clusters based on the local projected densities of LRGs brighter than Mr′ = -22. The QSOs are from the main sample of SDSS QSO spectroscopic survey to i′ = 19. A significant positive correlation is found between the clusters and QSOs. Under the assumption that the signal is caused by gravitational lensing, we fit the signal with singular isothermal sphere （SIS） model and NFW profile halo model. The velocity dispersion σv = 766 km s^-1 is derived for the best-fit of SIS model. Best-fit for the NFW model requires the dark matter halo mass within 1.5 h^-1 Mpc to be 4.6 × 10^14 h^-1 M⊙. The mass parameter Ωcl of the cluster sample is deduced as 0.077 with the SIS model and 0.083 with the NFW model. Our results of Ωcl are smaller than those given by Croom ＆ Shanks and by Myers et al.

关键词： cosmology observations - galaxies clusters general - quasars general - gravitational lensing

Ortho-Hydroxylation of Phenol by Tyrosinase Model Compounds

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Chinese Chemical Letters 2005年第2期16卷 147-150页

作者： Dai rong yuan Jia Ming YAN Cheng Zhi YU Ru Gang XIE Department of Chemistry Sichuan UniversityChengdu 610064

A series of tyrosinase model ligands and complexes containing polyimidazoles wereprepared. 2, 4-Di-tert-butyl-phenol was ortho-hydroxylated by the binuclear copper (?) complex[Cu2(6a)(CH3CN)2](ClO4)2 8a and molecular ... 详细信息

关键词： Tyrosinase model compound mimic enzyme catalysis ortho-hydroxylation ofphenol polyimidazole binuclear copper (I) complex.

ALMOST　PERIODIC　SOLUTIONS　OF　NEUTRAL　FUNCTIONAL　DIFFERENTIAL　EQUATIONS　WITH　NONAUTONOMOUS　OPERATOR

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Chinese Annals of Mathematics,Series B 1995年第4期16卷 519-530页

作者： yuan rong(Department of Mathematics, Beijing Normal Universityl Beijing 100875, China.) BEIJING NORMAL UNIV DEPT MATHBEIJING 100875PEOPLES R CHINA

This paper presents some existence theorems on almost periodic solutions for almost periodicneutral functional differential equation and its perturbed systems by means of Liapunov functional, and extends the correspon... 详细信息

关键词： Almost periodic solution Neutral functional differelltial equation Nonautollomous operator

Correlation of Platelet and Coagulation Function with Blood Stasis Syndrome in Coronary Heart Disease: A Systematic Review and Meta-Analysis

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Chinese Journal of Integrative Medicine 2021年第11期27卷 858-866页

作者： XIN Qi-qi CHEN Xun yuan rong yuan Ya-hui HUI Jia-qi MIAO Yu CONG Wei-hong CHEN Ke-ji Laboratory of Cardiovascular Diseases Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing100091China National Clinical Research Center for Chinese Medicine Cardiology Beijing100091China Department of Clinical Laboratory Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing100091China

Objective To investigate the correlation of platelet and coagulation function with blood stasis syndrome(BSS)in coronary heart disease(CHD).Methods The protocol for this meta-analysis was registered on PROSPERO(CRD42019129452).PubMed,Excerpta Medica Database(Embase),the Cochrane Library,and China National Knowledge Infrastructure(CNKI)were searched from inception to 1st June,*** were considered eligible if they enrolled BSS and non-BSS(NBSS)patients with CHD and provided information on platelet and coagulation *** platelet function,coagulation function,and fibrinolytic activity were compared between the BSS and NBSS *** plots were generated to show the SMDs or ESs with corresponding 95%CIs for each *** analysis and sensitivity analysis were performed to explore potential sources of *** The systematic search identified 1,583 *** trials involving 10,323 patients were included in the *** results showed that mean platelet volume,platelet distribution width,platelet aggregation rate,platelet P selectin,fibrinogen,plasminogen activator inhibitor-1(PAI-1),thromboxane B2(TXB2),6-keto-prostaglandin F1alpha(6-keto-PGF1α),and TXB2/6-keto-PGF1αwere higher in the BSS group than in the NBSS group(P<0.05 or P<0.01).Activated partial thromboplastin time was lower in the BSS group than in the NBSS group in the acute phase of CHD(P<0.01).The R and K values in thromboelastography and tissue plasminogen activator(t-PA)and t-PA/PAI-1 were lower in the BSS group than in the NBSS group(all P<0.01).No difference was found in the results of platelet count,plateletcrit,maximum amplitude,von Willebrand factor,prothrombin time,thrombin time,international normalized ratio,*** *** Increased platelet function,hypercoagulability,and decreased fibrinolytic activity were found among CHD patients with BSS.

关键词： coronary heart disease blood stasis syndrome platelet coagulation

Index-free triangle-based graph local clustering

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Frontiers of Computer Science 2024年第3期18卷 143-153页

作者： Zhe yuan Zhewei WEI Fangrui LV Ji-rong WEN The Country and Area Studies Academy Beijing Foreign Studies UniversityBeijing 100089China Gaoling School of Artificial Intelligence Renmin University of ChinaBeijing 100872China

Motif-based graph local clustering(MGLC)is a popular method for graph mining tasks due to its various ***,the traditional two-phase approach of precomputing motif weights before performing local clustering loses locality and is impractical for large *** some attempts have been made to address the efficiency bottleneck,there is still no applicable algorithm for large scale graphs with billions of *** this paper,we propose a purely local and index-free method called Index-free Triangle-based Graph Local Clustering(TGLC^(*))to solve the MGLC problem w.r.t.a ***^(*)directly estimates the Personalized PageRank(PPR)vector using random walks with the desired triangleweighted distribution and proposes the clustering result using a standard sweep *** demonstrate TGLC^(*)’s scalability through theoretical analysis and its practical benefits through a novel visualization ***^(*)is the first algorithm to solve the MGLC problem without precomputing the motif *** experiments on seven real-world large-scale datasets show that TGLC^(*)is applicable and scalable for large graphs.

关键词： graph local clustering triangle motif index-free sampling method visualization

Hydrogen production by mixed culture of several facultative bacteria and anaerobic bacteria

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Progress in Natural Science:Materials International 2011年第6期21卷 506-511页

作者： Chun-xiang QIAN,Lu-yuan CHEN,Hui rong,Xiao-ming yuan School of Materials Science and Engineering,Southeast University,Nanjing 211189,China School of Materials Science and Engineering Southeast University Nanjing 211189 China

The characteristic of hydrogen production by facultative anaerobic bacteria,obligate anaerobic bacteria and their mixed culture was studied by the batch culture *** results showed that,due to the synergistic effect between facultative bacteria and anaerobic bacteria,the ability of hydrogen production in the mixed culture was much better than that in the pure culture. Especially,the culture Scheme No.7 mixed up with three strains(Bacterium.E:Bacterium.B:Bacterium.P = 1:1:1) not only had the best hydrogen production capacity(1.885 mol H2/mol glucose) and maximum average hydrogen production rate(212.2 mL/(L-h)), but also had stable hydrogen production under continuous culture conditions,which was 1.968 mol H2/mol glucose.

关键词： hydrogen production bacteria producing hydrogen mixed culture

“碳审计”推动绿色共富的实施机制与协同治理路径研究

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价值工程 2024年第6期43卷 7-10页

作者：周佳琪程淑清秦溶苑汉江师范学院经济与管理学院十堰442000

以二氧化碳为主体的温室气体的排放导致极端气温、极端气象情况的增加,自然生态和人类经济活动受到巨大影响,为此我国宣布了碳达峰和碳中和的目标愿景。本文主要以我国地市级城市碳排放数据为研究样本,将得出的碳排放量结论同国际、国... 详细信息

以二氧化碳为主体的温室气体的排放导致极端气温、极端气象情况的增加,自然生态和人类经济活动受到巨大影响,为此我国宣布了碳达峰和碳中和的目标愿景。本文主要以我国地市级城市碳排放数据为研究样本,将得出的碳排放量结论同国际、国内同行业进行比较,有针对性地制定我国节能减排任务目标,并提出相应的实施机制与治理路径,向管理人员提供低碳预警,以期助力新时代下审计工作推动经济社会绿色转型发展的早日实现。

关键词：双碳碳审计绿色共富协同治理

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Impact of Carbon Chain Structures in the Backbone on the Flexibility of Modified Polyarylene Sulfide Resins: Molecular Dynamics Simulations and Mesoscopic Analysis

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Chinese Journal of Polymer Science 2024年第4期42卷 544-557页

作者： Chi Zhang rong Liu Jing-yuan Liu Wen-Wei Jiang Key Laboratory of Fine Chemical Engineering and Functional Materials School of Chemical EngineeringSichuan UniversityChengdu610065China

In the domain of high-performance engineering polymers, the enhancement of mechanical flexibility in poly(phenylene sulfide) (PPS) resins has long posed a significant challenge. A novel molecular structure, designated as PP-He-IS, wherein imide rings and an aliphatic hexylene chain are covalently incorporated into the PPS backbone to enhance its flexibility, is introduced in this study. Molecular dynamics (MD) simulations are employed to systematically explore the effects of diversifying the backbone chain structures by substituting phenyl units with alkyl chains of varying lengths, referred to as PP-A-IS where “A” signifies the distinct intermediary alkyl chain configurations. Computational analyses reveal a discernable decrement in the glass transition temperature (Tg) and elastic modulus, counterbalanced by an increment in yield strength as the alkyl chain length is extended. Notably, the PP-He-IS variant is shown to exhibit superior yield strength while simultaneously maintaining reduced elastic modulus and Tg values, positioning it as an advantageous candidate for flexible PPS applications. Mesoscopic analyses further indicate that structures such as PP-He-IS, PP-Pe-IS, and PP-Bu-IS manifest remarkable flexibility, attributable to the presence of freely rotatable carbon-carbon single bonds. Experimental validation confirms that a melting temperature of 504 K which is lower than that of conventional PPS, and lower crystallinity are exhibited by PP-He-IS, thereby affording enhanced processability without compromising inherent thermal stability. Novel insights into the strategic modification of PPS for mechanical flexibility are thus furnished by this study, which also accentuates the pivotal role played by molecular dynamics simulations in spearheading high-throughput investigations in polymer material modifications.

关键词： Molecular dynamics simulations Polyarylene Sulfide Main-chain modifications Flexibility Aliphatic hexylene chain

GTPBP3基因新发突变致联合氧化磷酸化缺陷症23型(附1例报告及文献复习)

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中国临床神经科学 2024年第2期32卷 187-193页

作者：李琴英关荣源王蓓刘迟程冰苑孙一忞邬剑军上海市静安区中心医院复旦大学附属华山医院静安分院康复医学科上海200040 上海市静安区中心医院复旦大学附属华山医院静安分院神经内科上海200040 上海市静安区中心医院复旦大学附属华山医院静安分院老年中心上海200040 复旦大学附属华山医院神经内科上海200040 国家神经疾病医学中心上海200040

目的总结联合氧化磷酸化缺陷症23型(COXPD23)的临床表型与基因型特征,提高临床医生对该类线粒体病的认识。方法回顾性分析1例COXPD23患儿的临床症状、体格检查、实验室检查、影像学特征等资料,应用全外显子测序明确诊断,并结合复习国内... 详细信息

目的总结联合氧化磷酸化缺陷症23型(COXPD23)的临床表型与基因型特征,提高临床医生对该类线粒体病的认识。方法回顾性分析1例COXPD23患儿的临床症状、体格检查、实验室检查、影像学特征等资料,应用全外显子测序明确诊断,并结合复习国内外相关文献进行讨论。结果患儿女性,5岁8月龄。临床表现为精神运动发育迟缓、智力下降、语言功能障碍,伴高乳酸血症,头颅MRI提示双侧基底节区及背侧丘脑、小脑上脚、小脑半球齿状核内见对称性异常信号影。全外显子测序显示患儿GTPBP3基因c.187C>T/c.776A>G(p.R63*/p.N259S)位点复合杂合突变,分别遗传自患儿父母(均为杂合状态),符合常染色体隐性遗传方式。该患儿为轻型病例,经过对症及康复治疗,病情平稳。随访至今,临床无心力衰竭表现。结论COXPD23罕见,表型复杂,轻型以脑病和高乳酸血症为临床特征,完善基因检测有助于明确诊断。

关键词：联合氧化磷酸化缺陷症23型 GTPBP3基因精神运动发育迟缓高乳酸血症