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One stone two birds:Dual-effect kinetic regulation strategy for practical lithium–sulfur batteries

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Journal of Energy Chemistry 2022年第2期31卷 302-303页

作者： xi-yao Li Qiang Zhang Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Lithium–sulfur(Li–S)batteries are deemed as one of the most promising energy storage systems due to their ultrahigh theoretical energy density of 2600 Wh kg^(-1) far beyond the current lithium-ion battery technique[1].

关键词： battery lithium Dual

Application of MLPG in large deformation analysis

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Acta Mechanica Sinica 2006年第4期22卷 331-340页

作者： xi Zhang Zhenhan yao Zhangfei Zhang Department of Engineering Mechanics Tsinghua University Beijing 100084 China

Two-dimensional large deformation analysis of hyperelastic and elasto-plastic solids based on the Meshless Local Petrov-Galerkin method （MLPG） is presented. A material configuration based the nonlinear MLPG formulation is introduced for the large deformation analysis of both path-dependent and path-independent materials. The supports of the MLS approximation functions cover the same sets of nodes during material deformation, thus the shape function needs to be computed only in the initial stage. The multiplicative hyperelasto-plastic constitutive model is adopted to avoid objective time integration for stress update in large rota- tion. With this constitutive model, the computational formulations for path-dependent and path-independent materials become identical. Computational efficiency of the nonlinear MLPG method is discussed and optimized in several aspects to make the MLPG an O（N） algorithm. The numerical examples indicate that the MLPG method can solve large deformation problems accurately. Moreover, the MLPG computations enjoy better convergence rate than the FEM under very large particle distortion.

关键词： Meshless method MLPG. Large deformation Hyperelasticity Hyperelasto-plasticity

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土家织锦技艺在现代服装设计中的创新运用

染整技术 2025年第1期47卷 100-102页

作者：尧希高子期西安工程大学服装与艺术设计学院陕西西安710048

土家织锦是土家族先祖们智慧的结晶,是我国极富民族色彩且极具地域特色的传统手工技艺。为了推动土家织锦技艺的传承与发展,为现代服装设计提供启发,分析土家织锦技艺的发展和应用现状,探讨土家织锦的工艺、图案和色彩在现代服装设计中... 详细信息

土家织锦是土家族先祖们智慧的结晶,是我国极富民族色彩且极具地域特色的传统手工技艺。为了推动土家织锦技艺的传承与发展,为现代服装设计提供启发,分析土家织锦技艺的发展和应用现状,探讨土家织锦的工艺、图案和色彩在现代服装设计中的创新运用方式。

关键词：土家织锦服装设计创新运用

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Effect of Noise on the Dynamics of Neuronal Network

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Chinese Physics Letters 1996年第8期13卷 629-632页

作者： LIU Feng WANG Wei yao xi-xian Department of Physics and Institute for Solid State PhysicsNanjing UniversityNanjing 210093

The structure of spatiotemporal pattern and the dynamical behavior of interspike timeinterval sequences of firings in a coupled noisy neuronal network are *** types of external stimuli have been used to exert on the *** dynamics is modulated by animpulse-like synaptic current which is modeled as globally coupling interactions in the *** peaks in the interspike interval histogram of spikes are located at integer multiples of the external period,which corresponds with experimental results.

关键词： integer globally dynamical

Far-field vector-diffraction of off-axis parabolic mirror under oblique incidence

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Chinese Physics B 2020年第3期29卷 190-201页

作者： xia-Hui Zeng xi-yao Chen Department of Physics&Electronic Information Engineering Minjiang UniversityFuzhou 350108China

Based on a full vector-diffraction theory, a detailed theoretical study is carried out, aiming at providing a clear insight into the effects of different focusing and off-axis parabola parameters on far-field vector-diffraction properties of an offaxis parabolic mirror in the presence of misalignments of the incoming beam. The physical origin of these effects is also explored. The results show that the far-field intensity profile is altered by the distortion-, coma-, and astigmatism-like aberrations, which are caused by oblique incidence rather than inherent aberrations for the off-axis configuration. The radius of 90% encircled energy also increases but does not change monotonically with incident beam size increasing, or rather,it first decreases and then increases. The focal shift strongly depends on the effective focal length and oblique incidence angle, but it is almost independent of the beam size, which affects the focusing spot patterns. The intensity distribution produces a higher astigmatic image with off-axis angle increasing. Coma-like aberration starts to become dominant with beam size increasing and results in larger curved propagation trajectory. The incident polarization also affects the intensity distribution. The variation in the Strehl ratio with oblique incidence angle strongly depends on the misalignment direction and beam size as well. In addition, we find that the difference in locus between the catacaustic and the diffraction focus in the meridian is small. But the locus of the sagittal foci is obviously different from the locus of the meridian foci and the catacaustic focus. Moreover, the peak intensity of the sagittal focus is maximum, and the ratio of the peak intensity to that in the meridian plane is approximately 1.5. Understanding these effects is valuable for assessing a practical focused intensity and describing the motion of charged particles under a strong electric field in ultraintense laser–matter interaction.

关键词： laser beam focusing off-axis parabolic mirror vector-diffraction theory oblique incidence

施用羊板粪对高寒矿区土壤微生物群落结构及其功能的影响

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草地学报 2025年第2期33卷 654-664页

作者：于中阳胡生斌安晓婷杨明春姚喜喜苏晓燕李长慧青海大学农牧学院青海西宁810016 青海大学畜牧兽医科学院青海西宁810016

为探究施用羊板粪对高寒矿区土壤理化性质、微生物群落结构及其功能的影响,本研究设置了不同羊板粪施用量(0 m^(3)·m^(-2),CK;0.04 m^(3)·m^(-2),T1;0.05 m^(3)·m^(-2),T2;0.06 m^(3)·m^(-2),T3),对施用后第二年的土壤相关参数进行... 详细信息

为探究施用羊板粪对高寒矿区土壤理化性质、微生物群落结构及其功能的影响,本研究设置了不同羊板粪施用量(0 m^(3)·m^(-2),CK;0.04 m^(3)·m^(-2),T1;0.05 m^(3)·m^(-2),T2;0.06 m^(3)·m^(-2),T3),对施用后第二年的土壤相关参数进行了测定和分析,发现施用羊板粪显著提高了土壤全氮、全磷、土壤有机质、速效氮和速效磷含量,并显著改变了细菌和真菌群落的Beta多样性、部分优势微生物菌群及功能微生物的相对丰度。冗余分析发现,土壤有机质、全氮和全磷是影响高寒矿区土壤细菌和真菌群落分布的关键土壤理化因子。综合而言,施用羊板粪对高寒矿区的土壤质量和微生物环境具有促进作用,建议木里矿区土壤修复可将羊板粪用量设置为0.06 m^(3)·m^(-2)。

关键词：高寒矿区羊板粪土壤理化性质微生物群落结构冗余分析

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Preparation and optical properties of solid solution semiconductor (Zn_xCd_(1-x)S) doped silica glasses

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Chinese Science Bulletin 1998年第1期43卷 78-81页

作者： SHI Wensheng ZHANG Liangying yao xi Electronic Materials Research Laboratory Xi’an Jiaotong UniversityXi’an 710049China

Semiconductor(Zn\-\%x\%Cd 1-x S) doped silica glasses were prepared by Sol_Gel process and \%in situ\% growth technique. The structure of the materials was characterized by X_ray diffraction technique, the particle size of semiconductor crystallites from X_ray patterns was estimated less than 10 nm. From absorption spectra, it is obtained that the absorption edges shifted to short wavelength diraction when Zn contents increased, and the absorption edge can be adjusted from 2.46 eV to 2.96 eV by controlling Zn contents. The third_order nonlinear optical susceptibility was studied at 532 nm with 8 ns pulse laser by degenerate four wave mixing (DFWM) technique.

关键词： Sol_Gel solid solution semiconductor(Zn\-\%x\%Cd 1-x S) nano_crystallite absorption edge.

A novel current-sharing scheme based on magamp

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第8期9卷 1150-1156页

作者： Wen-xi yao xiao-yuan HONG Zheng-yu LU School of Electrical Engineering Zhejiang University Hangzhou 310027 China

The magamp (magnetic amplifier) is widely used in power supplies due to its low cost, simplicity and other advan-tages. This paper discusses a novel application of the magamp in switching power supplies, where the magamp is used to regulate pulse width modulation (PWM) instead of power signal in the main circuit. This method extends the application of the magamp in power supplies, and makes it possible to further regulate control signal when PWMs have been generated. Based on this applica-tion, a new current-sharing (CS) scheme using the magamp is proposed, which uses a modified inner loop CS structure. In this scheme PWMs are generated by one main controller, and CS is achieved by regulating PWMs using a magamp in each module. Compared with traditional application of the magamp, the new CS scheme can be used in most topologies and only requires magamps of low power capacity. Then a test circuit of parallel power supply is developed, in which CS is achieved by a PWM regulator with the magamp. The proposed scheme is also used to upgrade an electroplate power to make it capable of paralleling supplies. Experimental results show that the proposed scheme has good CS performance.

关键词： Current-sharing (CS) Magnetic amplifier (magamp) Parallel

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Topological prime

Science China(Technological Sciences) 2020年第7期63卷 1314-1322页

作者： YANG XuXu YANG CanHui LIU JunJie yao xi SUO ZhiGang John A.Paulson School of Engineering and Applied Sciences Kavli Institute for Bionano Science and TechnologyHarvard UniversityCambridge MA 02138USA State Key Laboratory of Fluid Power&Mechatronic System Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceDepartment of Engineering Mechanics and Center for X-MechanicsZhejiang UniversityHangzhou 310027China Department of Mechanics and Aerospace Engineering Southern University of Science and TechnologyShenzhen 518055China Key Lab for Special Functional Materials of Ministry of Education Henan UniversityKaifeng 475004China

This paper describes a general method, called topological prime, to stitch functional groups to a substrate of entropic polymer network. The precursor of a topological primer contains polymers, crosslinkers, and coupling agents. When the precursor is applied on the surface of the substrate, the crosslinkers link the primer polymers into a primer network, in topological entanglement with the substrate network, while the coupling agents link the primer network to the functional groups. The use of topological prime is demonstrated by priming a hydrophobic elastomer of an arbitrary shape for hydrophilic coating. We describe an approach that fulfills two fundamental requirements: wetting and adhesion. The coated elastomer maintains hydrophilicity and lubricity after stretch, scratch, swell, and slide. As a further demonstration, a hydrogel substrate is primed for hydrophobic coating. Topological prime opens an enormous space for applications in engineering and biomedicine.

关键词： elastomer hydrogel hydrophilic coating topological prime functional groups