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An Effective Way for Determining the Transition Points in Lattice QCD at Finite Temperature

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wuhan university Journal of Natural sciences 2010年第6期15卷 500-504页

作者： wu Liangkai,ZHANG Faling faculty of science,jiangsu university,zhenjiang 212013,jiangsu,china faculty of science Jiangsu University Zhenjiang Jiangsu China

The transition points of lattice quantum chromodynamics（QCD） with two degenerate flavors of Wilson quarks at finite temperature T and small imaginary quark chemical potential μ are determined by using the reweighting *** the positive fermion determinant,i.e.,the chemical potential is pure imaginary,the simulations are performed at hopping parameter κ = *** comparison between the reweighting technique and the conventional point-by-point scanning method is *** results prove that the reweighting technique is an effective and efficient method in investigating the critical phenomenon.

关键词： lattice quantum chromodynamics(QCD) Wilson fermions chemical potential chiral condensate reweighting technique

Strong law of large numbers for Markov chains indexed by an infinite tree with uniformly bounded degree

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science china Mathematics 2008年第2期51卷 195-202页

作者： HUANG HuiLin~1 YANG weiguo~(2+) 1 Department of Mathematics,Shanghai Jiaotong university,Shanghai 200240,china 2 faculty of science,jiangsu university,zhenjiang 212013,china 1. Department of Mathematics Shanghai Jiaotong University Shanghai 200240 China 2. faculty of science Jiangsu University Zhenjiang 212013 China

In this paper,we study the strong law of large numbers and Shannon-McMillan (S-M) theorem for Markov chains indexed by an infinite tree with uniformly bounded *** results generalize the analogous results on a homogene... 详细信息

关键词： Markov chains Shannon-McMillan theorem strong law of large numbers uniformly bounded tree 60F15 60J10

变截面消声管道耦合Helmholtz腔结构的声学性能

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江苏大学学报（自然科学版） 2024年第1期45卷 99-104页

作者：吴卫国毕佳楠魏崴江苏大学土木工程与力学学院江苏镇江212013

基于局域共振理论与管道消声理论,设计了一种变截面消声管道耦合Helmholtz谐振腔的声学超材料结构,并运用COMSOL软件进行仿真研究.在此基础上,探讨了变截面声学超材料结构的几何参数对吸声系数峰值的影响,运用声学试验测试了该声学超材... 详细信息

基于局域共振理论与管道消声理论,设计了一种变截面消声管道耦合Helmholtz谐振腔的声学超材料结构,并运用COMSOL软件进行仿真研究.在此基础上,探讨了变截面声学超材料结构的几何参数对吸声系数峰值的影响,运用声学试验测试了该声学超材料结构的声学性能.结果表明:该变截面声学超材料结构在低频范围(200~600 Hz)内可实现良好的吸声效果;通过改变管道小孔的截面半径,可以实现声学超材料结构固有频率的定向调节;与普通Helmholtz腔相比,该声学超材料结构的吸声系数峰可在一定低频范围内移动,提高了结构在低频范围内的吸声效果,拓宽了吸声系数峰值对应频率的范围;声学超材料结构的几何参数得到了优化,具有良好的吸声效果.

关键词：声学超材料变截面管道 Helmholtz谐振腔低频吸声系数管道消声理论

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非等间距序列的灰色模型

数学的实践与认识 2003年第10期33卷 16-20页

作者：王钟羡吴春笃史雪荣江苏大学理学院力学系江苏大学生物与环境工程学院江苏镇江212013 盐城师范学院数学系江苏盐城224002

在对原始数据序列的一次累加生成时 ,考虑序列的间距 ,提出了对非等间距序列建立 GM( 1,1)模型的基本理论和方法 .通过对算例进行的计算 ,表明本文提出的方法概念明确、计算方便、有较高的拟合和预测精度 .

关键词：非等间距序列灰色模型灰色系统理论白化微分方程

Evaluation of biological effects of three neodymium compounds on silkworm,Bombyx mori

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Journal of Rare Earths 2021年第10期39卷 1289-1299,I0005页

作者： Vivian Andoh Huaiyang Guan Lin Ma weiguo Zhao Long Li Guohua wu College of Biotechnology Jiangsu University of Science and TechnologyZhenjiang 212018China The Sericultural Research Institute Chinese Academy of Agricultural SciencesZhenjiang 212018China

Neodymium(Nd)is one of the most famous members of rare earth elements *** the increasing global demand for Nd,it can inevitably enter the environment and affect the ecological environment through the food chain and other ***,it is very important to study the biological effects of *** this study,the biological effects of 3 kinds of Nd compounds,*** oxide(Nd_(2)O_(3)),neodymium chloride(NdCl3)and neodymium nitrate(Nd(NO_(3))_(3)),were evaluated by using silkworm models through the method of intravascular *** of the three Nd compounds was prepared into 6 groups at different concentrations(40,50,60,70,80,90μg/μL).The results show that within the certain concentration range,Nd compounds show great damage to the growth of silkworms since high death rate is observed:the death rate from Nd2 O3 group is floating between 30%and 80%,the one from NdCl3 group is between 17%and 33%and that from Nd(NO3)3 group is between 23%and 37%.It also reveals that Nd compounds have some negative effects on the body length and weight of ***,the histophysiological study shows that the three Nd compounds cause no obvious negative effects on the cell morphologies in midgut,fat body and silk *** XRD and FTIR spectra show that the secondary and the crystalline structures of silks are not destroyed,the TGA and DTG data exhibit that the thermal stability of silks is not damaged,and the tensile test shows that the mechanical properties of silks are not affected significantly by the intake of Nd *** general,the intake of Nd compounds has significant inhibitory effects on silkworm growth but little negative impact on silk structures or cell morphology,the study can provide useful toxicological data for the safe application of Nd compounds in various fields.

关键词： Nd compounds Bombyx mori Model animal Biological effects Rare earths

Effect of cerium alloying on microstructure,texture and mechanical properties of magnesium during cold-rolling process

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Journal of Rare Earths 2024年第5期42卷 1001-1008,I0007页

作者： Zhen Zhang Huanhuan Chen Shiju Cao Jinhua Peng Peng Guo Chang Long Shan Wang Chang Chen Yong wu Ji'an Huang Xiaodong Du Haigen Wei School of Materials science and Engineering Hefei University of TechnologyHefei230009China NationalLocal Joint Research Center of Non-ferrous Metal Materials and Processing Technology Hefei230009China Laboratory of Nonferrous Metal Material and Processing Engineering of Anhui Province Hefei230009China School of Materials science and Engineering Jiangsu University of Science and TechnologyZhenjiang212003China Institute of Industry and Equipment Technology Hefei University of TechnologyHefei230009China faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China

Hot-extrusion and cold-rolling were conducted on Mg-Ce binary alloys to explore the effect of cerium(Ce)on microstructure,texture and mechanical properties of Mg *** addition of Ce results in significant grain refinement both in as-cast and hot-extruded *** basal texture is also weakened after extrusion and an inclined basal texture is formed with Ce *** strength and elongation of the Mg-Ce alloys are improved simultaneously due to such grain refinement and texture weakening *** cold-rolling,plenty of twins are found in the pure Mg and AZ31 plates while grains in the Mg-0.3Ce plate deform more uniformly without lamellar twin ***,Mg-0.3Ce alloys own strong and continuous strain hardening because Ce atoms and Mg-Ce precipitated phases serve as obstacles for dislocation slip.

关键词： Mg-Ce alloys Hot extrusion Cold-rolling Rare earths

Modification of the CuO electronic structure for enhanced selective electrochemical CO_(2) reduction to ethylene

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Nano Research 2024年第8期17卷 7194-7202页

作者： Xin wu Zhuang Tong Yunliang Liu Yaxi Li Yuanyuan Cheng Jingwen Yu Peng Cao Chunqiang Zhuang Qiuzhong Shi Naiyun Liu Xiang Liu Hongyu Liang Haitao Li Institute for Energy Research School of Energy and Power EngineeringJiangsu UniversityZhenjiang 212013China faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China Institute of Medicine&Chemical Engineering Zhenjiang CollegeZhenjiang 212013China Institute of Advanced Manufacturing and Modern Equipment Technology School of Mechanical EngineeringJiangsu UniversityZhenjiang 212013China

Electrochemical carbon dioxide reduction reaction(CO_(2)RR)can produce value-added hydrocarbons from renewable electricity,providing a sustainable and promising approach to meet dual-carbon targets and alleviate the energy ***,it is still challenging to improve the selectivity and stability of the products,especially the C^(2+) *** we propose to modulate the electronic structure of copper oxide(CuO)through lattice strain construction by zinc(Zn)doping to improve the selectivity of the catalyst to *** performance and in situ characterization analyses show that the compressive strain generated within the CuO lattice and the electronic structure modulation by Zn doping enhances the adsorption of the key intermediate*CO,thereby increasing the intrinsic activity of CO_(2)RR and inhibiting the hydrogen precipitation *** the best catalysts had significantly improved ethylene selectivity of 60.5%and partial current density of 500 mA·cm^(–2),and the highest C^(2+) Faraday efficiency of 71.47%.This paper provides a simple idea to study the modulation of CO_(2)RR properties by heteroatom doped and lattice strain.

关键词： CO_(2) reduction heteroatom-doped lattice strain ethylene selectivity

Reinforcing oxygen electrocatalytic activity via selective dualphase heterointerface engineering for rechargeable Zn-air batteries

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Rare Metals 2024年第4期43卷 1524-1536页

作者： Chao Cheng Chuang Zhi Zhong-Ti Sun Yong-Qiang Ming Ting-Ting Xiang Qing-Chao Zhu Zi-Rui wu Bing Li Yi Li Cheng Jin Yong Cao Juan Yang School of Materials science and Engineering Jiangsu UniversityZhenjiang212013China faculty of Material science and Engineering Kunming University of Science and TechnologyKunming650093China

Dual-phase heterointerface electrocatalysts(DPHE)constructed by oxygen reduction reaction(ORR)-and oxygen evolution reaction(OER)-active elements exhibit excellent bifunctional activity and long-term durability due to the abundant interface exposure and synergistic catalytic ***,low-dimensional N-doped graphene nanoribbons(N-GNRs)coupling with ultrathin CoO nanocomposites(N-GNRs/CoO)were controllably fabricated through a facile two-step approach using synthesized Co(OH)_2 nanosheet as CoO *** functional theory(DFT)calculations and experimental characterizations prove that the formation of interface between N-GNRs and CoO can induce local charge redistribution,contributing to the improvement of catalytic activity and *** optimal N-GNRs/CoO DPHE possesses hierarchically porous architectures and presents outstanding bifunctional activities with a small potential gap of 0.729 V between the potential at 10 mA·cm^(-2)for OER and the halfwave potential for ORR,which outperforms Pt/C+IrO_(2)and the majority of noble-metal-free bifunctional ***-and solid-state rechargeable Zn-air batteries assembled with N-GNRs/CoO as the cathode also display high peak power density and fantastic cycle stability,superior to that of benchmark Pt/C+IrO_(2)*** is anticipated to offer significant benefits toward high activity,stability and mechanical flexibility bifunctional oxygen electrocatalysts for rechargeable Zn-air batteries.

关键词： Interface engineering Graphene nanoribbons CoO Bifunctional electrocatalyst Zn-air batteries

桑树根系分泌物鉴定及其主要活性物质对桑树青枯菌生长的影响研究

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植物生理学报 2024年第9期60卷 1475-1485页

作者：史惠聪王思怡刘梦圆邓峻严赵卫国李萍吴福安江苏科技大学生物技术学院江苏省蚕桑与畜禽生物技术重点实验室江苏镇江212100 农业农村部蚕桑遗传改良重点实验室中国农业科学院桑蚕科学研究中心江苏镇江212100

为探讨桑树(Morus alba)根系分泌物对青枯病菌(Ralstonia pseudosolanacearum)的抑菌活性,本研究利用气相色谱-质谱联用(GC-MS)技术及平板抑菌试验研究了桑树根系分泌物主要活性物质对桑树青枯病菌(Ralstonia pseudosolanacearum)生长... 详细信息

为探讨桑树(Morus alba)根系分泌物对青枯病菌(Ralstonia pseudosolanacearum)的抑菌活性,本研究利用气相色谱-质谱联用(GC-MS)技术及平板抑菌试验研究了桑树根系分泌物主要活性物质对桑树青枯病菌(Ralstonia pseudosolanacearum)生长的影响。结果表明,桑树根系分泌物中含量最高的3种主要活性物质包括芥酸酰胺、油酸酰胺和溴樟脑,其中芥酸酰胺、油酸酰胺在根系分泌物中的质量占总质量的42.6%,溴樟脑占总质量的18.33%。三种主要的根系分泌物对桑树青枯菌MRS-5的生长均表现出明显的抑制作用,在1.5 g·L^(-1)时的抑菌效果最佳,抑菌率均达到90%以上,并能够显著抑制MRS-5生物膜的形成和运动能力。本研究揭示了桑树根系分泌物中主要活性物质的抑菌效果和潜在的防治机制,对理解和防控桑树青枯病提供科学和实践参考。

关键词：桑树根系分泌物气相色谱-质谱法(GC-MS) 桑树青枯病抑菌作用