检索结果-南通市图书馆

A meshless method by using radial basis function for numerical solutions of wave shoaling equation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2019年第1期31卷 83-92页

作者： Lin-jian Wu Yuan-zhan wang yi Li1 chun-ning Ji National Engineering Research Center for Inland Waterway Regulation School of River and Ocean EngineeringChongqing Jiaotong UniversityChongqing 400074China State Key Laboratory of Hydraulic Engineering Simulation and Safety Collaborative Innovation Center for Advanced Ship and Deep-Sea ExplorationTianjin UniversityTianjin 300072China

In this present study,a numerical method is proposed for solving the wave shoaling differential equations with turbulent and laminar boundary layers by using the meshless method based on the radial basis *** numerical solutions are compared with those of the finite difference method to see the accuracy,the validity and the applicability of the methodology developed in this *** meshless method by using the radial basis function can effectively improve the computational *** findings in this paper provide a significant support for the study of wave shoaling problems.

关键词： Meshless method radial basis function wave shoaling differential equation

A possible probe to neutron-skin thickness by fragment parallel momentum distribution in projectile fragmentation reactions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第6期35卷 114-119页

作者： chun-wang Ma yi-Jie Duan Ya-Fei Guo chun-Yuan Qiao Yu-Ting wang Jie Pu Kai-Xuan Cheng Hui-Ling Wei College of Physics Henan Normal UniversityXinxiang 453007China Institute of Nuclear Science and Technology Henan Academy of SciencesZhengzhou 450015China

Neutron-skin thickness is a key parameter for a neutron-rich nucleus;however,it is difficult to *** the framework of the Lanzhou Quantum Molecular Dynamics(LQMD)model,a possible probe for the neutron-skin thickness(δ_(np))of neutron-rich ^(48)Ca was studied in the 140A MeV ^(48)Ca+^(9)Be projectile fragmentation reaction based on the parallel momentum distribution(p∥)of the residual fragments.A Fermi-type density distribution was employed to initiate the neutron density distributions in the LQMD simulations.A combined Gaussian function with different width parameters for the left side(Γ_(L))and the right side(Γ_(R))in the distribution was used to describe the p∥of the residual *** neutron-rich sulfur isotopes as examples,Γ_(L) shows a sensitive correlation withδ_(np) of ^(48)Ca,and is proposed as a probe for determining the neutron skin thickness of the projectile nucleus.

关键词： Neutron-skin thickness Projectile fragmentation Parallel momentum distribution Neutron-rich nucleus Quantum molecular dynamics model

Quantitative assessment of the surface crack density in thermal barrier coatings

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2014年第2期30卷 167-174页

作者： Li Yang Zhi-chun Zhong yi-chun Zhou chun-Sheng Lu Key Laboratory of Low Dimensional Materials & Application Technology (Ministry of Education)/Faculty of Materials Optoelectronic & PhysicsXiangtan University Department of Mechanical Engineering Curtin University

In this paper, a modified shear-lag model is developed to calculate the surface crack density in thermal barrier coatings（TBCs）. The mechanical properties of TBCs are also measured to quantitatively assess their surface crack density. Acoustic emission（AE） and digital image correlation methods are applied to monitor the surface cracking in TBCs under tensile loading. The results show that the calculated surface crack density from the modified model is in agreement with that obtained from experiments. The surface cracking process of TBCs can be discriminated by their AE characteristics and strain evolution. Based on the correlation of energy released from cracking and its corresponding AE signals, a linear relationship is built up between the surface crack density and AE parameters, with the slope being dependent on the mechanical properties of TBCs.

关键词： Thermal barrier coatings Acoustic emission Surface crack density Quantitative assessment

Local Bifurcation of Critical Periods for a Class of Liénard Equations

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2014年第3期30卷 627-634页

作者： yi SHAO chun-xiang A School of Mathematics and Statistics Zhaoqing University

In this paper, we study the local bifurcation of critical periods near the nondegenerate center （the origin） of a class of Li@nard equations with degree 2n, and prove that at most 2n - 2 critical periods （taken into account multiplicity） can be produced from a weak center of finite order. We also prove that it can have exactly 2n - 2 critical periods near the origin.

关键词： period function critical periods local bifurcation

Adsorption of Ag on M-doped graphene:First principle calculations

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 487-494页

作者： Min Hu Zhou Fan Jian-yi Liu Kun Zhang Yang wang chun-feng Yang School of New Energy and Materials Southwest Petroleum UniversityChengdu 610500China State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering Southwest Petroleum UniversityChengdu 610500China Journal Center Southwest Petroleum UniversityChengdu 610500China

Graphene is an ideal reinforcing phase for a high-performance composite filler,which is of great theoretical and practical significance for improving the wettability and reliability of the ***,the poor adsorption characteristics between graphene and the silver base filler significantly affect the application of graphene filler in the brazing *** is a great challenge to improve the adsorption characteristics between a graphene and silver base *** solve this issue,the adsorption characteristic between graphene and silver was studied with first principle *** effects of Ga,Mo,and W on the adsorption properties of graphene were *** are three possible adsorbed sites,the hollow site(H),the bridge site(B),and the top site(T).Based on this research,the top site is the most preferentially adsorbed site for Ag atoms,and there is a strong interaction between graphene and Ag *** element doping enhances local hybridization between C or metal atoms and ***,compared with other doped structures(Ga and Mo),W atom doping is the most stable adsorption structure and can also improve effective adsorption characteristic performance between graphene and Ag.

关键词： graphene filler first principle calculations adsorption characteristic

Reactive oxygen species:Multidimensional regulators of plant adaptation to abiotic stress and development

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第3期66卷 330-367页

作者： Pengtao wang Wen-Cheng Liu Chao Han Situ wang Ming-yi Bai chun-Peng Song State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475004China The Key Laboratory of Plant Development and Environmental Adaptation Biology Ministry of EducationSchool of Life SciencesShandong UniversityQingdao 266237China Faculty of Science McGill UniversityMontreal H3B1X8Canada

Reactive oxygen species(ROS)are produced as undesirable by-products of metabolism in various cellular compartments,especially in response to unfavorable environmental conditions,throughout the life cycle of *** ROS production disrupts normal cellular function and leads to oxidative *** cope with excessive ROS,plants are equipped with a sophisticated antioxidative defense system consisting of enzymatic and non-enzymatic components that scavenge ROS or inhibit their harmful effects on ***,when maintained at relatively low levels,ROS act as signaling molecules that regulate plant growth,development,and adaptation to adverse ***,we provide an overview of current approaches for detecting *** also discuss recent advances in understanding ROS signaling,ROS metabolism,and the roles of ROS in plant growth and responses to various abiotic stresses.

关键词： abiotic stress growth and development plant reactive oxygen species

Bioinformatics: A beacon of hope in identifying molecular target

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2021年第5期20卷 496-498页

作者： Kang-chun wang Zheng-Guang wang yi-Bo Dai Hang-Fei Wu De-Hui yi Department of Organ Transplantation and Hepatobiliary The First Affiliated Hospital of China Medical UniversityShenyang 110001China The Key Laboratory of Organ Transplantation of Liaoning Province The First Affiliated Hospital of China Medical UniversityShenyang 110001China Department of Orthopedics The First Affiliated Hospital of China Medical UniversityShenyang 110001China Northeast Yucai School Shenyang 110001China

Hepatobiliary malignancies are highly heterogeneous with poor prognosis and drug response [1]. It is difficult to diagnose at an early stage. Hence, precise molecular targets are urgently needed to improve the diagnose efficacy and individual treatment response. However, reliable biomarkers that can predict the individual treatment response are still lacking. With the broad application of high-throughput sequencing technology and bioinformatics analysis in scientific research, increasing numbers of diagnosing molecular targets will be found and tested. Such bioinformatics will provide a more rational way to diagnose, prevent, and treat hepatobiliary cancers [2].

关键词： prognosis precise rational

Influence of the Nongyrotropy on the Gyrotropic Ring Instability

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1998年第1期15卷 38-40页

作者： CAO Jin-bin wang Xue-yi CAI chun-lin Center for Space Science and Applied Research Chinese Academy of ScienceBeijing 100080

The instability driven by the nongyrotropic newborn ions is studied for oblique *** results show the influence of nongyrotropic on the gyrotropic ring instability decreases when the propagation angle *** growth rate in the case of nongyrotropic is smaller than that in the case of *** nongyrotropic also breaks the symmetry of the propagation of the waves in the plane perpendicular to the ambient magnetic field.

关键词： field symmetry ambient

Disposal of zinc extraction residues via iron ore sintering process:an innovative resource utilization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第7期31卷 1636-1645页

作者： chun-long Fan Cheng-yi Ding Tao Yang Yun-fei Luo yi-fan wang Qian Li Hong-ming Long School of Metallurgical Engineering Anhui University of TechnologyMa'anshan 243002AnhuiChina Zhongye Changtian International Engineering Co. Ltd.Changsha 410205HunanChina Key Laboratory of Metallurgical Emission Reduction and Resources Recycling(Ministry of Education) Anhui University of TechnologyMa'anshan 243002AnhuiChina

Zinc extraction residue,a solid waste generated from the treatment of zinc-containing dust in rotary kilns,is commonly stockpiled in steel companies for extended *** poses significant disposal challenges and environmental pollution *** far,research on the treatment of zinc extraction residues has been slow,inadequate,and *** this gap,a novel approach was proposed to effectively treat the zinc extraction residue via the iron ore sintering *** was feasible to add 1 wt.%of zinc extraction residues to the sintering raw *** more adequate mineralization reaction resulted in higher yield and tumbler indexes,despite a slight decrease in sintering *** this may result in a slight decrease in sintering speed,the more complete mineralization reaction leads to improved sintering yield and tumbler ***,the addition of zinc extraction residues reduced the CO and NO_(x) concentrations in the sintering flue ***,the iron ore sintering process provided a viable solution for resource utilization and environmentally friendly treatment of zinc extraction residues.

关键词： Zinc extraction residue Iron ore sintering Co-processing Waste utilization Gas pollutant reduction