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Journal of Computational Mathematics 2006年第1期24卷 59-80页

作者： hong-ying man Zhong-ci Shi LSEC ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100080 China Department of Mathematics Beijing institute of Technology Beijing 100081 China

In this paper, we discuss the finite volume element method of P1-nonconforming quadrilateral element for elliptic problems and obtain optimal error estimates for general quadrilateral partition. An optimal cascadic multigrid algorithm is proposed to solve the non-symmetric large-scale system resulting from such discretization. Numerical experiments are reported to support our theoretical results.

关键词： finite volume element method cascadic multigrid Elliptic problems

沙滩排球训练对女排运动员弹跳肌群等速向心收缩肌力影响的比较研究

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浙江体育科学 2000年第5期22卷 52-55页

作者：徐国红葛春林尹洪满山东省烟台师范学院体育系山东烟台264000 北京体育大学排球教研室北京100084

为探讨在沙滩这种特殊的介质上进行排球训练对运动员膝、踝关节肌群肌力的影响 ,在 1998年沙滩排球训练周期前后 ,对我国 12名兼职沙滩女排运动员的膝、踝关节屈伸肌群进行了等速向心收缩肌力测试。结果表明 ,沙滩训练后 ,膝关节屈肌群... 详细信息

为探讨在沙滩这种特殊的介质上进行排球训练对运动员膝、踝关节肌群肌力的影响 ,在 1998年沙滩排球训练周期前后 ,对我国 12名兼职沙滩女排运动员的膝、踝关节屈伸肌群进行了等速向心收缩肌力测试。结果表明 ,沙滩训练后 ,膝关节屈肌群快肌纤维的爆发力 ,伸肌群快肌纤维的最大肌力和爆发力 ,踝关节跖肌群慢、快肌纤维的最大肌力和爆发力增长有显著性意义。

关键词：女排运动员沙滩排球训练等速向心收缩肌力测试弹跳高度

Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第01期 288-296页

作者： Shuai Liu Wen-Qiang Xu ying-Tong Di man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu ying Zeng Yun-Dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

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Asymptotic false discovery control of the Benjamini-Hochberg procedure for pairwise comparisons

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Science China Mathematics 2025年第1期 223-252页

作者： Weidong Liu Dennis Leung Qi-man Shao School of Mathematical Sciences Shanghai Jiao Tong University School of Mathematics and Statistics University of Melbourne Department of Statistics and Data Science SICMSouthern University of Science and Technology

In a one-way analysis-of-variance(ANOVA) model,the number of pairwise comparisons can become large even with a moderate number of *** by this,we consider a regime with a growing number of groups and prove that,when testing pairwise comparisons,the Benjamini-Hochberg(BH) procedure can asymptotically control false discoveries,despite the fact that the involved t-statistics do not exhibit the wellknown positive dependence structure required for exact false discovery rate(FDR) *** Tukey's perspective that the difference between the means of any two groups cannot be exactly zero,our main result provides control over the directional false discovery rate and directional false discovery proportion.A key technical contribution of our work is demonstrating that the dependence among the t-statistics is sufficiently weak to establish the convergence result typically required for asymptotic FDR *** analysis does not rely on conventional assumptions such as normality,variance homogeneity,or a balanced design,thereby offering a theoretical foundation for applications in more general settings.

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Boosting Photocatalytic Performance of Cu-Mn Co-doped CeO_(2) Nanoparticles for Tetracycline Degradation

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 42-48页

作者： XU Rongqi MI Jianxin WANG Shulin XU man ZHU Li BAI Lei TANG Dandan LEI Yu Engineering Research Center of Environmental Materials and Membrane Technology of Hubei Province School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Shaanxi Coal Chemical Industry Technology Research Institute Co. Ltd.Xi’an 710100China

Cu-Mn co-doped CeO_(2) photocatalyst was successfully synthesized by the sol-gel method to assess its capability in degrading *** and TEM results showed that Cu and Mn were successfully co-doped into CeO_(2) without forming heterostructure,XPS and photoelectrochemical results revealed that Mn ions doping amplified the generation of photo-induced charge carriers,while Cu ions doping significantly facilitated the interfacial charge transfer ***,the optimized Cu3Mn2CeO_(2) nanoparticles exhibited the highest TC removal efficiency,achieved a rate of 78.18%and maintained a stable cycling performance.

关键词： photocatalyst co-doped charge separation water treatment

Brain region-specific roles of brain-derived neurotrophic factor in social stress-induced depressive-like behavior

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Neural Regeneration Research 2025年第1期20卷 159-173页

作者： man Han Deyang Zeng Wei Tan Xingxing Chen Shuyuan Bai Qiong Wu Yushan Chen Zhen Wei Yufei Mei Yan Zeng Brain Science and Advanced Technology Institute Wuhan University of Science and TechnologyWuhanHubei ProvinceChina Geriatric Hospital Affiliated to Wuhan University of Science and Technology WuhanHubei ProvinceChina School of Public Health Wuhan University of Science and TechnologyWuhanHubei ProvinceChina

Brain-derived neurotrophic factor is a key factor in stress adaptation and avoidance of a social stress behavioral *** studies have shown that brain-derived neurotrophic factor expression in stressed mice is brain region–specific,particularly involving the corticolimbic system,including the ventral tegmental area,nucleus accumbens,prefrontal cortex,amygdala,and *** how brain-derived neurotrophic factor participates in stress processing in different brain regions will deepen our understanding of social stress *** this review,we discuss the expression and regulation of brain-derived neurotrophic factor in stress-sensitive brain regions closely related to the pathophysiology of *** focused on associated molecular pathways and neural circuits,with special attention to the brain-derived neurotrophic factor–tropomyosin receptor kinase B signaling pathway and the ventral tegmental area–nucleus accumbens dopamine *** determined that stress-induced alterations in brain-derived neurotrophic factor levels are likely related to the nature,severity,and duration of stress,especially in the above-mentioned brain regions of the corticolimbic ***,BDNF might be a biological indicator regulating stress-related processes in various brain regions.

关键词： amygdala chronic mild stress chronic social defeat stress corticolimbic system depression hippocampus medial prefrontal cortex nucleus accumbens social stress models ventral tegmental area

Effect of Thermomechanical Parameters on Σ3~n Grain Boundaries and Grain Boundary Networks of a New Superaustenitic Stainless Steel

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Journal of Iron and Steel Research International 2014年第1期21卷 109-115页

作者： hong-ying SUN Zhang-jian ZHOU man WANG Xiao LI School of Materials Science and Engineering University of Science and Technology Beijing Technology Center Anyang Iron and Steel Group Company Metallurgy Engineering Research Institute University of Science and Technology Beijing

Hot compression tests were conducted in a temperature range of 800--1100 ℃and strain rate range of 0. 1- 10 s^-1 using a Gleeble 3500 thermomechanical simulator to investigate the influence of hot deformation parameters （temperatures, strain rates and strains） on the grain boundary network evolution of a new grade Fe-Cr-Ni superaustenitic stainless steel. The results showed that a dominant effect of deformed temperature is ∑3^n （n = 0, 1, 2, 3） boundaries population increased with decreasing temperature, while they first increased and then reduced with in- creasing strain and strain rate. Interestingly, besides E3n （n = 1, 2, 3） twin grain boundaries, some El boundaries could interrupt grain boundaries network effectively, which enhance material performances. But they are scarcely re- ported. The misorientation of some segments LAGBs in the deformed microstructure （pancaked grains） increased and slid to high angle grain boundaries with increasing the fraction of reerystallized grains during hot deformation.

关键词： superaustenitic stainless steel thermomechanieal processing electron backscatter diffraction (EBSD) coincidence site lattice grain boundary grain boundary engineering

Quantum supremacy: some fundamental concepts

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National Science Review 2019年第1期6卷 22-23页

作者： man-hong Yung Shenzhen Institute for Quantum Science and Engineering and Department of Physics Southern University of Science and Technology Shenzhen Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology

Quantum computation was envisioned by Feynman as a valuable means of solving quantum problems [1]. The question is, how do we prove the superiority of quantum computing over classical devices? A common misconception in describing the power of a quantum computer over a classical computer is that quantum bits can be prepared in a superposition of an exponential number of states, which cannot be achieved with classical bits. This statement is certainly true, but it does not tell us, specifically,what problems quantum computers can

关键词： Quantum supremacy some fundamental concepts

教育强国视域下高质量教师教育体系的理论认识与实践设计——专访东北师范大学柳海民教授

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教师教育学报 2025年第1期12卷 1-8页

作者：柳海民满莹东北师范大学教育学部吉林长春130024

柳海民教授长期致力于教育质量与教育体系建设的学术研究。经济领域提出高质量发展政策话语后,柳海民教授带领团队率先开展了教育高质量发展研究,并先后获批“新时代中国教育高质量发展的路径与对策研究”“高质量教育体系的内涵、比较... 详细信息

柳海民教授长期致力于教育质量与教育体系建设的学术研究。经济领域提出高质量发展政策话语后,柳海民教授带领团队率先开展了教育高质量发展研究,并先后获批“新时代中国教育高质量发展的路径与对策研究”“高质量教育体系的内涵、比较与建设路径研究”两项国家社科基金重大项目。近年来,该团队已形成了一系列以“教育高质量发展”为核心的学术成果。高质量的教师队伍是教育高质量发展的关键支撑,也是教育强国建设的中坚力量。柳海民教授重点阐述了高质量教师教育体系在支撑教育强国建设中的理论认识与实践路径。他认为,高质量教师教育体系对于教育强国建设的价值,既体现在对建设高质量教育体系的支撑作用上,又体现在对解决学科发展困境的现实需求上。他强调高质量教师教育体系的内涵特征应紧紧把握“高质量”“体系化”“自主性”三个方面。当前,教师教育已支撑中国建成了世界最大规模的教育体系,教师教育模式的持续创新有效促进了教师素质的整体提升,高质量教师教育体系正助推中国教育国际竞争力不断攀升。在教育强国背景下,高质量教师教育体系建设需要教育家精神的引领、科学系统的制度设计以及高效灵活的教育治理模式。

关键词：教育强国建设高质量教师教育体系教师教育模式教育高质量发展教育家精神

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Effects of Solution Depletion and Segregation Oxidation on Morphology of Modified 310 Austenitic Stainless Steel

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Journal of Iron and Steel Research International 2016年第4期23卷 393-400页

作者： hong-ying SUN Qiang HE Zhang-jian ZHOU man WANG Guang-ming ZHANG Shao-fu LI Key Laboratory of Key Functional Parts of Machine Anyang Institute of TechnologyAnyang 455002HenanChina School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

The oxidation morphologies of modified 310 steel exposed in 900 and 1 100 ℃ air were investigated. A double layer morphology consisting of a （Cr, Mn）-rich outer layer and a fine Cr-rich inner layer was formed at 900℃. It was related to the breakaway oxidation induced by the Cr-depletion and the Mn-segregation in inner layer. Some Cr-rich oxides with amorphous state were formed along grain boundaries. And some new finer oxide grains, voids and Cr-rich precipitates were observed in spallation areas at 1 100℃. Correspondingly, the oxidation kinetic curve dropped with the spallation of scale and increased with the formation of some new oxide grains. It was caused by segregation of Cr and the transformation of oxides from Cr2O3 to the volatile oxides at elevated temperature. XRD analysis showed that the precipitates were mainly composed of CrO3. Segregation and depletion for solutions were also discussed by oxidation diffusion mechanisms.

关键词： austenitic stainless steel SEM morphology oxidation segregation element