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Journal of Materials Science & Technology 2020年第7期42卷 163-174页

作者： jun Gao Jibo Tan ming Jiao Xinqiang Wu Lichen tang Yifeng Huang CAS Key Laboratory of Nuclear Materials and Safety Assessment Liaoning Key Laboratory for Safety and Assessment Technique of Nuclear MaterialsInstitute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Shanghai Nuclear Engineering Research and Design Institute Shanghai200233China

Corrosion fatigue behavior of Alloy 52/52 M dissimilar metal weld(DMW)was investigated in borated and lithiated high-temperature *** fatigue life of Alloy 52/52 M DMW in high-temperature water decreased in comparison with that in *** fatigue cracks initiated at Alloy 52 M butt weld or at the interface of Alloy 52 buttering and Alloy 52 M butt *** welding residual strain and ductility dip cracking in Alloy 52 M butt weld promoted the initiation and propagation of fatigue *** environmentally assisted fatigue damage in high-temperature water is discussed by taking account of microstructure defects.

关键词： Superalloys Corrosion fatigue High temperature corrosion Welding

Design strategy of phase and microstructure of Si_(3)N_(4) ceramics with simultaneously high hardness and toughness

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Journal of Advanced Ceramics 2023年第1期12卷 122-131页

作者： Shao-jun tang Wei-ming GUO Shi-Kuan SUN Hua-Tay LIN School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006China School of Material Science and Energy Engineering Foshan UniversityFoshan 528000China

Aiming to achieve silicon nitride( Si_(3)N_(4))ceramics with high hardness and high toughness,the relationships among phase composition,microstructure,and mechanical properties of Si_(3)N_(4) ceramics prepared by spark plasma sintering(SPS)at temperatures ranging from 1500 to 1800℃were investigated in this *** stages with different phase and microstructure features were observed and ***α-βphase transformation occurs first,and the development and growth of grains lag *** the first stage,the average grain size remains basically unchanged,and the hardness maintains at a value of~20.18±0.26 GPa,despite theβ- Si_(3)N_(4) phase fraction increases from 7.67 to 57.34 wt%.Subsequently,the equiaxed grains transform into rod-like grains with a high aspect ratio via the reprecipitation process,resulting in a significant increase in the fracture toughness from 3.36±0.62 to 7.11±0.15 MPa·m^(1/2).In the second stage of sintering process,the fraction ofβ- Si_(3)N_(4) phase increases to 100.00 wt%,and the grain growth also rapidly ***,the fracture toughness increases slightly to 7.61±0.42 MPa·m^(1/2),but the hardness reduces to 16.80±0.20 *** current results demonstrate that the phase contents ofβ- Si_(3)N_(4) and the microstructure shall be carefully tailored to achieve high-performance Si_(3)N_(4) ceramics. Si_(3)N_(4) ceramics with a finegrained bimodal microstructure,consisting of the mainα-andβ-phases,can exhibit the optimized combination of hardness and toughness.

关键词： silicon nitride(Si_(3)N_(4)) phase composition microstructure hardness toughness

SIMULATION AND DYNAMIC VISUALIZATION OF FLOW AND SEDIMENT MOTION DOWNSTREAM OF CUIJIAYING DAM

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Journal of Hydrodynamics 2006年第4期18卷 492-498页

作者： YU ming-hui XU Jin-jun WAN Yuan-yang DOU Shen-tang State Key Laboratory of Water Resource and Hydropower Engineering Science Wuhan University Wuhan 430072 China College of Mapping and Survey Wuhan University Wuhan 430071 China Yangtze River Scientific Research Institute Wuhan 430010 China State Key Laboratory of Water Resource and Hydropower Engineering Science. Wuhan University Wuhan 430072 China

Based on a depth-averaged 2D numerical river model, the flow and sediment movement downstream of the Cuijiaying dam Hanjiang River（China） are investigated. A new technique is employed to achieve synchronous dynamic visualization of topography and velocity field. The calculating results can reflect the relationship between flow and corresponding topography.

关键词： river dynamics simulation visualization topography

Robustness of Diversity Induced Synchronization Transition in a Delayed Small-World Neuronal Network

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Chinese Physics Letters 2011年第10期28卷 20-23页

作者： tang jun QU Li-Cheng LUO Jin-ming College of Science China University of Mining and TechnologyXuzhou 221000

In a diverse and delayed small-world neuronal network,we have identified the oscillatory-like synchronization transition between anti-phase and complete synchronization[***.E 83(2011)046207].Here we study the influence of the network topology and noise on the synchronization *** robustness of this transition is *** results show that:(i)the synchronization transition is robust to the neuron number N in the network;(ii)only when the coupled neighbor number k is in the region[4,10],does the synchronization transition exist;(iii)to some extent,the synchronization is destroyed by noise and the oscillatory−like synchronization transition exists for relatively weak noise(D<0.003).

关键词： transition transition Transition

Bioapplications Manipulated by AIEgens with Nonlinear Optical Effect

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Chemical Research in Chinese Universities 2021年第1期37卷 25-37页

作者： HAO Yuxuan XU Shengpeng CHEN ming QIAN jun tang Ben Zhong College of Chemistry and Materials Science Jinan UniversityGuangzhou510632P.R.China Department of Chemistry The Hong Kong University of Science and TechnologyKowloonHong KongP.R.China College of Optical Science and Engineering Zhejiang UniversityHangzhou310058P.R.China

The modern medicine requires precise diagnostic techniques while the fluorescent imaging shows great potential in such applications due to its excellent sensitivity and high ***,conducting fluorescent imaging in deep-tissue is not so easy because most luminogens show short-wavelength excitation,which may undergo severe light scattering by the *** marriage of fluorescent imaging with nonlinear optical(NLO)effect can alleviate such adverse effects by utilizing NIR laser to reduce light *** the other hand,scientists are enthusiastic in pursuing luminescent materials,which can match well with NLO ***-induced emission(AIE)materials exhibit huge advantages in such aspect not only because of its high luminescent efficiency in aggregate state but also due to its excellent photo-stability(a key factor to meet laser application because of its ultrahigh energy density).Inspired by this,many interesting and meaningful works have sprung up based on AIE luminogens with NLO effect in recent years,and for such reason,it motivates us to summarize them to give a systematic ***,we first give a brief introduction of the principle of NLO ***,the strategies for improving the NLO effect of AIE materials,such as increasing molecular conjugation,introduction of donor-acceptor effect,induction of centrally asymmetric array of AIE molecules in crystals and introduction of intermolecular interactions are *** the final part,we also present the multiple applications of AIEgens with NLO effect in cell imaging,deep-tissue tumor and brain blood vessel imaging and photodynamic *** believe,with this review,the topic will attract more attention from the scientists in multi-science field to accelerate the development of AIE materials in biomedical applications.

关键词： Aggregation-induced emission Nonlinear optical effect Bioimaging Photodynamic therapy

A review for dynamics of collective behaviors of network of neurons

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Science China(Technological Sciences) 2015年第12期58卷 2038-2045页

作者： MA jun tang jun Department of Physics Lanzhou University of Technology College of Science China University of Mining and Technology

The nervous system is composed of a large number of neurons, and the electrical activities of neurons can present multiple modes during the signal transmission between neurons by changing intrinsic bifurcation parameters or under appropriate external forcing. In this review, the dynamics for neuron, neuronal network is introduced, for example, the mode transition in electrical activity, functional role of autapse connection, bifurcation verification in biological experiments, interaction between neuron and astrocyte, noise effect, coherence resonance, pattern formation and selection in network of neurons. Finally, some open problems in this field such as electromagnetic radiation on electrical activities of neuron, energy consumption in neurons are presented.

关键词： Neuronal network defects spiral wave target wave electromagnetic induction

Tumor suppressor role of mi R-133a in gastric cancer by repressing IGF1R

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World Journal of Gastroenterology 2015年第10期21卷 2949-2958页

作者： Yu Gong jun Ren Kun Liu Li-ming tang Department of Gastrointestinal Surgery Nanjing Medical University Affiliated Changzhou No. 2 People’s Hospital

AIM:To investigate the function and mechanism of mi R-133a in gastric cancer(GC)and its relationship with clinicopathological characteristics of ***:A total of 105 GC patients who underwent surgical resection as primary treatment were selected for this ***-time quantitative reverse transcriptase polymerase chain(q RT-PCR)was used to examine the expression levels of mi R-133a in human GC and adjacent non-tumor tissues,as well as in GC cell lines(SGC-7901,BGC-823,MGC-803,and AGS)and a human gastric mucosal epithelial cell line(GES-1).The biological role of mi RNA(mi R)-133a was assessed in the GC cell lines using MTT,apoptosis,migration and invasion,and colony formation assays,and xenograft tumorigenesis.q RT-PCR and western blot analyses were used to evaluate the potential target gene expression of mi ***’s correlation was calculated to evaluate the correlation between mi R-133a and insulinlike growth factor 1 receptor(IGF1R)*** regulation of IGF1R by mi R-133a was verified using the luciferase reporter ***:In 80%of the 105 GC patients,the mean expression of mi R-133a was significantly downregulated in tumor tissues compared with adjacent normal tissues(1.215±0.1477 vs 3.093±0.4104,P<0.0001).Downregulation of mi R-133a was significantly correlated with the degree of differentiation(P=0.01),local invasion(P=0.001)and TNM stage(P=0.02)in GC *** with a control construct,forced expression of mi R-133a in GC cell lines inhibited proliferation(0.4787±0.0219 vs 0.7050±0.0147,P=0.0013 in SGC-7901 cells;and 0.5448±0.0085vs 0.7270±0.0084,P=0.001 in MGC-803 cells);migration(0.6333±0.0233 vs 1.037±0.0584,P=0.003 in SGC-7901 cells;0.6126±0.0311 vs 1.024±0.0456,P=0.0017 in MGC-803 cells);and invasion(0.613±0.0399 vs 1.033±0.0278,P=0.0013 in SGC-7901 cells;0.7433±0.0221 vs 1.017±0.0311,P=0.002 in MGC-803 cells).It also induced apoptosis(18.19%±0.2483%vs 5.887%±0.3837%,P<0.0001 in SGC-7901 cells;22.69%±0.7846%vs9.347%±0.301

关键词： Gastric cancer mi R-133a Tumor suppressor Insulin-

陈旧性骨质疏松性椎体压缩骨折骨不连的修复策略:一项病例分析

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中国组织工程研究 2025年第3期29卷 538-546页

作者：赵星丞王军陆明上海市公共卫生临床中心骨科上海市201508

背景:腰椎骨质疏松性压缩性骨折患者的脊柱和骨盆矢状位参数存在不同程度改变,将导致全脊柱/腰椎矢状面发生失平衡和再平衡。如果初次骨质疏松性椎体压缩骨折没有得到及时治疗,随着时间的推移将发展为陈旧性骨质疏松性椎体压缩骨折骨不... 详细信息

背景:腰椎骨质疏松性压缩性骨折患者的脊柱和骨盆矢状位参数存在不同程度改变,将导致全脊柱/腰椎矢状面发生失平衡和再平衡。如果初次骨质疏松性椎体压缩骨折没有得到及时治疗,随着时间的推移将发展为陈旧性骨质疏松性椎体压缩骨折骨不连。目的:观察陈旧性骨质疏松性腰椎体压缩骨折骨不连9例患者行经皮椎体成形(PVP)术后的修复效果。方法:回顾性分析2018年9月至2022年8月上海市公共卫生临床中心骨科收治的陈旧性老年骨质疏松性腰椎椎体压缩性骨折骨不连经皮椎体成形术后术椎再骨折患者9例的临床资料,所有患者均采用经皮椎体成形行再翻修治疗,同时规律进行抗骨质疏松治疗和康复训练。出院前及随访时复查患者的腰椎X射线平片及三维CT检测结果,评价骨水泥弥散情况,记录患者术前、术后、随访时的目测类比评分、腰椎Oswetry功能障碍指数(ODI评分)及Roussouly腰椎功能分型变化。结果与结论:①9例患者术后随访时均未发生神经损伤、感染、骨水泥椎管内渗漏、肺栓塞及过敏性休克等严重手术并发症,均未发生骨水泥相关的不良反应。有1例患者术后2年感染COVID-19致呼吸功能衰竭死亡。②术椎再骨折患者术后疼痛目测类比评分和ODI评分均显著低于翻修术前,末次随访经皮椎体成形翻修术后患者Roussouly腰椎功能分型显著改善;末次随访测量术椎椎体高度变化与术前比较无显著性意义。③上述结果提示,对陈旧性骨质疏松性腰椎体压缩骨折骨不连行经皮椎体成形治疗的患者而言,适量骨水泥注入和有效骨水泥弥散具有明显缓解术后疼痛作用,规律抗骨质疏松和术后有效康复训练有助于患者术后腰椎功能恢复。

关键词：骨质疏松经皮椎体成形骨水泥注入技术椎体成形术椎再骨折 Roussouly腰椎功能分型应力集中区

Suzuki cross-coupling reactions over engineered AuPd alloy nanoparticles by recycling scattered light

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Nano Research 2022年第12期15卷 9967-9975页

作者： ming-Yu Qi Hua-Kun Wu Masakazu Anpo Zi-Rong tang Yi-jun Xu College of Chemistry State Key Laboratory of Photocatalysis on Energy and EnvironmentFuzhou UniversityFuzhou350116China Department of Applied Chemistry Osaka Prefecture UniversityOsaka599-8531Japan

Photocatalyzed organic transformations have spurred immense interest in synthetic chemistry for the efficient conversion of solar energy into chemical ***,the crucial roles of support,which fixes catalytic sites and improves the light-harvesting ability,are often ignored in photoredox ***,we report the utilization of spherical SiO2 support to engineer AuPd alloy particles(denoted as AuPd/SiO2),conceptually different from traditional methods for tuning optical absorption of plasmonic Au or AuPd particles,to manipulate light-harvesting ability of AuPd particles for highly selective and efficient photocatalytic Suzuki cross-coupling *** this deliberately designed system,typically without the size and shape alternation of AuPd particles,the supported AuPd particles recycle the scattering light from spherical SiO2 support and achieve the significant broad light-harvesting ability instead of the surface plasmon resonance *** engineered AuPd/SiO2 composites by the use of near-field scattering-promoted optical absorption showcase the remarkably enhanced activity for visible-light-induced photocatalytic Suzuki cross-coupling reactions in comparison with that using commercial SiO2 support,highlighting the spherical-support-effect induced efficient utilization of scattered *** work highlights the feasibility of manipulating the light-harvesting capability of bimetallic particles by the near-field scattering-promoted optical absorption model toward efficient photo-driven Suzuki cross-coupling reaction and other C-C coupling organic synthesis to produce high value-added chemicals.

关键词： photocatalysis AuPd alloy particles Suzuki cross-coupling light harvesting surface plasmon resonance

Experimental investigation and analytically modeling of hysteretic behavior of rigid bus-flexible connectors of 220 kV electrical substations

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Earthquake Engineering and Engineering Vibration 2023年第3期22卷 841-852页

作者： tang Tingxuan He jun Department of Civil Engineering School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

This paper describes the quasi-static testing and analytical modelling of the hysteretic behavior of aluminum alloy rigid bus-flexible connectors of 220 kV electrical *** main objective of the study is to experimentally investigate the hysteretic behavior of six different types of rigid bus-flexible connectors 220 kV electrical substations when subjected to cyclic *** objective is to theoretically study the flexibility and effectiveness of a previously proposed analytical model in fitting the experimental hysteresis loops of the tested rigid bus-flexible *** experimental investigation indicates that the tested rigid bus-flexible connectors exhibit highly asymmetric hysteresis behavior along with tension stiffening *** theoretical study demonstrates that the generalized Bouc-Wen model has high flexibility and is effective in fitting the experimental hysteresis resisting force-displacement curves of the six tested rigid bus-flexible connectors.

关键词： rigid bus-flexible connectors 220 kV electrical substations hysteretic behavior experimental curves analytical model